1、实现标签功能

2、实现删除用户,当删除一个用户时,该用户的所有信息将转义到超级管理员账户上
pull/219/head
Minho 2017-07-07 16:20:55 +08:00
parent c7f32d7cb5
commit 47687cc5b1
85 changed files with 13999 additions and 184 deletions

View File

@ -78,6 +78,7 @@ func RegisterModel() {
new(models.MemberToken),
new(models.DocumentHistory),
new(models.Migration),
new(models.Label),
)
migrate.RegisterMigration()
}

View File

@ -137,7 +137,7 @@ func (c *BookController) SaveBook() {
comment_status = "closed"
}
if tag != ""{
tags := strings.Split(tag,";")
tags := strings.Split(tag,",")
if len(tags) > 10 {
c.JsonResult(6005,"最多允许添加10个标签")
}

View File

@ -26,6 +26,7 @@ import (
"github.com/lifei6671/mindoc/models"
"github.com/lifei6671/mindoc/utils"
"github.com/lifei6671/mindoc/utils/wkhtmltopdf"
"github.com/russross/blackfriday"
)
//DocumentController struct.
@ -126,7 +127,7 @@ func (c *DocumentController) Index() {
c.Data["Model"] = bookResult
c.Data["Result"] = template.HTML(tree)
c.Data["Title"] = "概要"
c.Data["Content"] = bookResult.Description
c.Data["Content"] = template.HTML( blackfriday.MarkdownBasic([]byte(bookResult.Description)))
}
//阅读文档.

View File

@ -43,4 +43,11 @@ func (c *HomeController) Index() {
c.Data["Lists"] = books
labels ,totalCount,err := models.NewLabel().FindToPager(1,10)
if err != nil {
c.Data["Labels"] = make([]*models.Label,0)
}else{
c.Data["Labels"] = labels
}
}

View File

@ -0,0 +1,60 @@
package controllers
import (
"github.com/lifei6671/mindoc/models"
"github.com/astaxie/beego/orm"
"github.com/astaxie/beego"
"github.com/lifei6671/mindoc/conf"
"github.com/lifei6671/mindoc/utils"
)
type LabelController struct {
BaseController
}
func (c *LabelController) Index() {
c.Prepare()
c.TplName = "label/index.tpl"
//如果没有开启你们访问则跳转到登录
if !c.EnableAnonymous && c.Member == nil {
c.Redirect(beego.URLFor("AccountController.Login"),302)
return
}
labelName := c.Ctx.Input.Param(":key")
pageIndex,_ := c.GetInt("page",1)
if labelName == "" {
c.Abort("404")
}
_,err := models.NewLabel().FindFirst("label_name",labelName)
if err != nil {
if err == orm.ErrNoRows {
c.Abort("404")
}else{
beego.Error(err)
c.Abort("500")
}
}
member_id := 0
if c.Member != nil {
member_id = c.Member.MemberId
}
search_result,totalCount,err := models.NewBook().FindForLabelToPager(labelName,pageIndex,conf.PageSize,member_id)
if err != nil {
beego.Error(err)
return
}
if totalCount > 0 {
html := utils.GetPagerHtml(c.Ctx.Request.RequestURI, pageIndex, conf.PageSize, totalCount)
c.Data["PageHtml"] = html
}else {
c.Data["PageHtml"] = ""
}
c.Data["Lists"] = search_result
c.Data["LabelName"] = labelName
}

View File

@ -186,6 +186,7 @@ func (c *ManagerController) ChangeMemberRole() {
c.JsonResult(0, "ok", member)
}
//编辑用户信息.
func (c *ManagerController) EditMember() {
c.Prepare()
c.TplName = "manager/edit_users.tpl"
@ -238,6 +239,38 @@ func (c *ManagerController) EditMember() {
c.Data["Model"] = member
}
//删除一个用户,并将该用户的所有信息转移到超级管理员上.
func (c *ManagerController) DeleteMember() {
c.Prepare()
member_id,_ := c.GetInt("id",0)
if member_id <= 0 {
c.JsonResult(404,"参数错误")
}
_ ,err := models.NewMember().Find(member_id)
if err != nil {
beego.Error(err)
c.JsonResult(500,"用户不存在")
}
superMember,err := models.NewMember().FindByFieldFirst("role",0)
if err != nil {
beego.Error(err)
c.JsonResult(5001,"未能找到超级管理员")
}
err = models.NewMember().Delete(member_id,superMember.MemberId)
if err != nil {
beego.Error(err)
c.JsonResult(5002,"删除失败")
}
c.JsonResult(0,"ok")
}
//项目列表.
func (c *ManagerController) Books() {
c.Prepare()
c.TplName = "manager/books.tpl"
@ -261,7 +294,7 @@ func (c *ManagerController) Books() {
c.Data["Lists"] = books
}
//编辑项目
//编辑项目.
func (c *ManagerController) EditBook() {
c.Prepare()

1
docs/.gitignore vendored
View File

@ -1 +0,0 @@
# Created by .ignore support plugin (hsz.mobi)

View File

@ -3,11 +3,13 @@ package models
import (
"time"
"strings"
"github.com/astaxie/beego"
"github.com/astaxie/beego/logs"
"github.com/astaxie/beego/orm"
"github.com/lifei6671/mindoc/conf"
"github.com/astaxie/beego/logs"
"strings"
"github.com/astaxie/beego"
"fmt"
)
// Book struct .
@ -45,11 +47,11 @@ type Book struct {
Version int64 `orm:"type(bigint);column(version)" json:"version"`
}
// TableName 获取对应数据库表名.
func (m *Book) TableName() string {
return "books"
}
// TableEngine 获取数据使用的引擎.
func (m *Book) TableEngine() string {
return "INNODB"
@ -69,6 +71,10 @@ func (m *Book) Insert() error {
_, err := o.Insert(m)
if err == nil {
if m.Label != "" {
NewLabel().InsertOrUpdateMulti(m.Label)
}
relationship := NewRelationship()
relationship.BookId = m.BookId
relationship.RoleId = 0
@ -101,7 +107,6 @@ func (m *Book) Find(id int) (*Book,error) {
}
o := orm.NewOrm()
err := o.QueryTable(m.TableNameWithPrefix()).Filter("book_id", id).One(m)
return m, err
@ -110,6 +115,18 @@ func (m *Book) Find(id int) (*Book,error) {
func (m *Book) Update(cols ...string) error {
o := orm.NewOrm()
temp := NewBook()
temp.BookId = m.BookId
if err := o.Read(temp);err != nil {
return err
}
if (m.Label + temp.Label) != "" {
go NewLabel().InsertOrUpdateMulti(m.Label + "," + temp.Label)
}
_, err := o.Update(m, cols...)
return err
}
@ -149,34 +166,24 @@ func (m *Book) FindToPager(pageIndex, pageSize ,memberId int) (books []*BookResu
o := orm.NewOrm()
qb, _ := orm.NewQueryBuilder("mysql")
sql1 := "SELECT COUNT(book.book_id) AS total_count FROM " + m.TableNameWithPrefix() + " AS book LEFT JOIN " +
relationship.TableNameWithPrefix() + " AS rel ON book.book_id=rel.book_id AND rel.member_id = ? WHERE rel.relationship_id > 0 "
qb.Select("COUNT(book.book_id) AS total_count").
From(m.TableNameWithPrefix() + " AS book").
LeftJoin(relationship.TableNameWithPrefix() + " AS rel").
On("book.book_id=rel.book_id AND rel.member_id = ?").
Where("rel.relationship_id > 0")
err = o.Raw(qb.String(),memberId).QueryRow(&totalCount)
err = o.Raw(sql1, memberId).QueryRow(&totalCount)
if err != nil {
return
}
offset := (pageIndex - 1) * pageSize
qb2,_ := orm.NewQueryBuilder("mysql")
qb2.Select("book.*,rel.member_id","rel.role_id","m.account as create_name").
From(m.TableNameWithPrefix() + " AS book").
LeftJoin(relationship.TableNameWithPrefix() + " AS rel").On("book.book_id=rel.book_id AND rel.member_id = ?").
LeftJoin(relationship.TableNameWithPrefix() + " AS rel1").On("book.book_id=rel1.book_id AND rel1.role_id=0").
LeftJoin(NewMember().TableNameWithPrefix() + " AS m").On("rel1.member_id=m.member_id").
Where("rel.relationship_id > 0").
OrderBy("book.order_index DESC ","book.book_id").Desc().
Limit(pageSize).
Offset(offset)
sql2 := "SELECT book.*,rel.member_id,rel.role_id,m.account as create_name FROM " + m.TableNameWithPrefix() + " AS book" +
" LEFT JOIN " + relationship.TableNameWithPrefix() + " AS rel ON book.book_id=rel.book_id AND rel.member_id = ?" +
" LEFT JOIN " + relationship.TableNameWithPrefix() + " AS rel1 ON book.book_id=rel1.book_id AND rel1.role_id=0" +
" LEFT JOIN " + NewMember().TableNameWithPrefix() + " AS m ON rel1.member_id=m.member_id " +
" WHERE rel.relationship_id > 0 ORDER BY book.order_index DESC,book.book_id DESC LIMIT " + fmt.Sprintf("%d,%d",offset,pageSize)
_,err = o.Raw(qb2.String(),memberId).QueryRows(&books)
_, err = o.Raw(sql2, memberId).QueryRows(&books)
if err != nil {
logs.Error("分页查询项目列表 => ", err)
return
@ -190,7 +197,6 @@ func (m *Book) FindToPager(pageIndex, pageSize ,memberId int) (books []*BookResu
ModifyTime time.Time
}
err1 := o.Raw(sql, book.BookId).QueryRow(&text)
if err1 == nil {
books[index].LastModifyText = text.Account + " 于 " + text.ModifyTime.Format("2006-01-02 15:04:05")
@ -221,14 +227,7 @@ func (m *Book) ThoroughDeleteBook(id int) error {
return err
}
o.Begin()
//sql1 := "DELETE FROM " + NewComment().TableNameWithPrefix() + " WHERE book_id = ?"
//
//_,err := o.Raw(sql1,m.BookId).Exec()
//
//if err != nil {
// o.Rollback()
// return err
//}
sql2 := "DELETE FROM " + NewDocument().TableNameWithPrefix() + " WHERE book_id = ?"
_, err := o.Raw(sql2, m.BookId).Exec()
@ -254,6 +253,10 @@ func (m *Book) ThoroughDeleteBook(id int) error {
return err
}
if m.Label != "" {
NewLabel().InsertOrUpdateMulti(m.Label)
}
return o.Commit()
}
@ -303,6 +306,52 @@ func (m *Book) FindForHomeToPager(pageIndex, pageSize ,member_id int) (books []*
}
//分页全局搜索.
func (m *Book) FindForLabelToPager(keyword string, pageIndex, pageSize, member_id int) (books []*BookResult, totalCount int, err error) {
o := orm.NewOrm()
keyword = "%" + keyword + "%"
offset := (pageIndex - 1) * pageSize
//如果是登录用户
if member_id > 0 {
sql1 := "SELECT COUNT(*) FROM md_books AS book LEFT JOIN md_relationship AS rel ON rel.book_id = book.book_id AND rel.member_id = ? WHERE (relationship_id > 0 OR book.privately_owned = 0) AND book.label LIKE ?"
err = o.Raw(sql1, member_id,keyword).QueryRow(&totalCount)
if err != nil {
return
}
sql2 := `SELECT book.*,rel1.*,member.account AS create_name FROM md_books AS book
LEFT JOIN md_relationship AS rel ON rel.book_id = book.book_id AND rel.member_id = ?
LEFT JOIN md_relationship AS rel1 ON rel1.book_id = book.book_id AND rel1.role_id = 0
LEFT JOIN md_members AS member ON rel1.member_id = member.member_id
WHERE (rel.relationship_id > 0 OR book.privately_owned = 0) AND book.label LIKE ? ORDER BY order_index DESC ,book.book_id DESC LIMIT ?,?`
_, err = o.Raw(sql2, member_id,keyword, offset, pageSize).QueryRows(&books)
return
} else {
count, err1 := o.QueryTable(NewBook().TableNameWithPrefix()).Filter("privately_owned", 0).Filter("label__icontains",keyword).Count()
if err1 != nil {
err = err1
return
}
totalCount = int(count)
sql := `SELECT book.*,rel.*,member.account AS create_name FROM md_books AS book
LEFT JOIN md_relationship AS rel ON rel.book_id = book.book_id AND rel.role_id = 0
LEFT JOIN md_members AS member ON rel.member_id = member.member_id
WHERE book.privately_owned = 0 AND book.label LIKE ? ORDER BY order_index DESC ,book.book_id DESC LIMIT ?,?`
_, err = o.Raw(sql,keyword, offset, pageSize).QueryRows(&books)
return
}
}
func (book *Book) ToBookResult() *BookResult {
m := NewBookResult()
@ -325,7 +374,6 @@ func (book *Book) ToBookResult() *BookResult {
m.Editor = book.Editor
m.Theme = book.Theme
if book.Theme == "" {
m.Theme = "default"
}
@ -346,51 +394,3 @@ func (m *Book) ResetDocumentNumber(book_id int) {
beego.Error(err)
}
}

View File

@ -155,7 +155,7 @@ func (m *Document) ReleaseContent(book_id int) {
func (m *Document) FindListByBookId(book_id int) (docs []*Document, err error) {
o := orm.NewOrm()
_, err = o.QueryTable(m.TableNameWithPrefix()).Filter("book_id", book_id).All(&docs)
_, err = o.QueryTable(m.TableNameWithPrefix()).Filter("book_id", book_id).OrderBy("order_sort").All(&docs)
return
}

92
models/label.go 100644
View File

@ -0,0 +1,92 @@
package models
import (
"github.com/lifei6671/mindoc/conf"
"github.com/astaxie/beego/orm"
"strings"
)
type Label struct {
LabelId int `orm:"column(label_id);pk;auto;unique;" json:"label_id"`
LabelName string `orm:"column(label_name);size(50);unique" json:"label_name"`
BookNumber int `orm:"column(book_number)" json:"book_number"`
}
// TableName 获取对应数据库表名.
func (m *Label) TableName() string {
return "label"
}
// TableEngine 获取数据使用的引擎.
func (m *Label) TableEngine() string {
return "INNODB"
}
func (m *Label)TableNameWithPrefix() string {
return conf.GetDatabasePrefix() + m.TableName()
}
func NewLabel() *Label {
return &Label{}
}
func (m *Label) FindFirst(field string, value interface{}) (*Label,error){
o := orm.NewOrm()
err := o.QueryTable(m.TableNameWithPrefix()).Filter(field, value).One(m)
return m, err
}
//插入或更新标签.
func (m *Label) InsertOrUpdate(labelName string) error {
o := orm.NewOrm()
err := o.QueryTable(m.TableNameWithPrefix()).Filter("label_name",labelName).One(m)
if err != nil && err != orm.ErrNoRows {
return err
}
count,_ := o.QueryTable(NewBook().TableNameWithPrefix()).Filter("label__icontains",labelName).Count()
m.BookNumber = int(count)
m.LabelName = labelName
if err == orm.ErrNoRows {
err = nil
m.LabelName = labelName
_,err = o.Insert(m)
}else{
_,err = o.Update(m)
}
return err
}
//批量插入或更新标签.
func (m *Label) InsertOrUpdateMulti(labels string) {
if labels != "" {
labelArray := strings.Split(labels, ",")
for _, label := range labelArray {
if label != "" {
NewLabel().InsertOrUpdate(label)
}
}
}
}
//分页查找标签.
func (m *Label) FindToPager(pageIndex, pageSize int) (labels []*Label,totalCount int,err error) {
o := orm.NewOrm()
count,err := o.QueryTable(m.TableNameWithPrefix()).Count()
if err != nil {
return
}
totalCount = int(count)
offset := (pageIndex - 1) * pageSize
_,err = o.QueryTable(m.TableNameWithPrefix()).OrderBy("-book_number").Offset(offset).Limit(pageSize).All(&labels)
return
}

View File

@ -217,6 +217,7 @@ func (m *Member) ResolveRoleName() {
}
}
//根据账号查找用户.
func (m *Member) FindByAccount(account string) (*Member, error) {
o := orm.NewOrm()
@ -228,6 +229,7 @@ func (m *Member) FindByAccount(account string) (*Member, error) {
return m, err
}
//分页查找用户.
func (m *Member) FindToPager(pageIndex, pageSize int) ([]*Member, int64, error) {
o := orm.NewOrm()
@ -260,6 +262,7 @@ func (c *Member) IsAdministrator() bool {
return c.Role == 0 || c.Role == 1
}
//根据指定字段查找用户.
func (m *Member) FindByFieldFirst(field string, value interface{}) (*Member, error) {
o := orm.NewOrm()
@ -268,6 +271,7 @@ func (m *Member) FindByFieldFirst(field string, value interface{}) (*Member, err
return m, err
}
//校验用户.
func (m *Member) Valid(is_hash_password bool) error {
//邮箱不能为空
@ -324,6 +328,67 @@ func (m *Member) Valid(is_hash_password bool) error {
return nil
}
//删除一个用户.
func (m *Member) Delete(oldId int,newId int) error {
o := orm.NewOrm()
err := o.Begin()
if err != nil {
return err
}
_,err = o.Raw("DELETE FROM md_members WHERE member_id = ?",oldId).Exec()
if err != nil {
o.Rollback()
return err
}
_,err = o.Raw("UPDATE md_attachment SET `create_at` = ? WHERE `create_at` = ?",newId,oldId).Exec()
if err != nil {
o.Rollback()
return err
}
_,err = o.Raw("UPDATE md_books SET member_id = ? WHERE member_id = ?",newId,oldId).Exec()
if err != nil {
o.Rollback()
return err
}
_,err = o.Raw("UPDATE md_document_history SET member_id=? WHERE member_id = ?",newId,oldId).Exec()
if err != nil {
o.Rollback()
return err
}
_,err = o.Raw("UPDATE md_document_history SET modify_at=? WHERE modify_at = ?",newId,oldId).Exec()
if err != nil {
o.Rollback()
return err
}
_,err = o.Raw("UPDATE md_documents SET member_id = ? WHERE member_id = ?;",newId,oldId).Exec()
if err != nil {
o.Rollback()
return err
}
_,err = o.Raw("UPDATE md_documents SET modify_at = ? WHERE modify_at = ?",newId,oldId).Exec()
if err != nil {
o.Rollback()
return err
}
_,err = o.Raw("UPDATE md_relationship SET member_id = ? WHERE member_id = ?",newId,oldId).Exec()
if err != nil {
o.Rollback()
return err
}
if err = o.Commit();err != nil {
o.Rollback()
return err
}
return nil
}

View File

@ -5,6 +5,7 @@ import (
"github.com/astaxie/beego/context"
"github.com/lifei6671/mindoc/conf"
"github.com/lifei6671/mindoc/models"
"encoding/json"
)
func init() {
@ -12,9 +13,19 @@ func init() {
_, ok := ctx.Input.Session(conf.LoginSessionName).(models.Member)
if !ok {
if ctx.Input.IsAjax() {
jsonData := make(map[string]interface{},3)
jsonData["errcode"] = 403
jsonData["message"] = "请登录后再操作"
returnJSON, _ := json.Marshal(jsonData)
ctx.ResponseWriter.Write(returnJSON)
}else{
ctx.Redirect(302, beego.URLFor("AccountController.Login"))
}
}
}
beego.InsertFilter("/manager",beego.BeforeRouter,FilterUser)
beego.InsertFilter("/manager/*",beego.BeforeRouter,FilterUser)
beego.InsertFilter("/setting",beego.BeforeRouter,FilterUser)

View File

@ -19,6 +19,7 @@ func init() {
beego.Router("/manager/users", &controllers.ManagerController{},"*:Users")
beego.Router("/manager/users/edit/:id", &controllers.ManagerController{},"*:EditMember")
beego.Router("/manager/member/create", &controllers.ManagerController{},"post:CreateMember")
beego.Router("/manager/member/delete", &controllers.ManagerController{},"post:DeleteMember")
beego.Router("/manager/member/update-member-status",&controllers.ManagerController{},"post:UpdateMemberStatus")
beego.Router("/manager/member/change-member-role", &controllers.ManagerController{},"post:ChangeMemberRole")
beego.Router("/manager/books", &controllers.ManagerController{},"*:Books")
@ -82,5 +83,7 @@ func init() {
beego.Router("/comment/index", &controllers.CommentController{},"*:Index")
beego.Router("/search",&controllers.SearchController{},"get:Index")
beego.Router("/tag/:key", &controllers.LabelController{},"get:Index")
}

View File

@ -0,0 +1,55 @@
.bootstrap-tagsinput {
background-color: #fff;
border: 1px solid #ccc;
box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
display: inline-block;
padding: 4px 6px;
color: #555;
vertical-align: middle;
border-radius: 4px;
max-width: 100%;
line-height: 22px;
cursor: text;
}
.bootstrap-tagsinput input {
border: none;
box-shadow: none;
outline: none;
background-color: transparent;
padding: 0 6px;
margin: 0;
width: auto;
max-width: inherit;
}
.bootstrap-tagsinput.form-control input::-moz-placeholder {
color: #777;
opacity: 1;
}
.bootstrap-tagsinput.form-control input:-ms-input-placeholder {
color: #777;
}
.bootstrap-tagsinput.form-control input::-webkit-input-placeholder {
color: #777;
}
.bootstrap-tagsinput input:focus {
border: none;
box-shadow: none;
}
.bootstrap-tagsinput .tag {
margin-right: 2px;
color: white;
}
.bootstrap-tagsinput .tag [data-role="remove"] {
margin-left: 8px;
cursor: pointer;
}
.bootstrap-tagsinput .tag [data-role="remove"]:after {
content: "x";
padding: 0px 2px;
}
.bootstrap-tagsinput .tag [data-role="remove"]:hover {
box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
}
.bootstrap-tagsinput .tag [data-role="remove"]:hover:active {
box-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.125);
}

View File

@ -0,0 +1,646 @@
(function ($) {
"use strict";
var defaultOptions = {
tagClass: function(item) {
return 'label label-info';
},
itemValue: function(item) {
return item ? item.toString() : item;
},
itemText: function(item) {
return this.itemValue(item);
},
itemTitle: function(item) {
return null;
},
freeInput: true,
addOnBlur: true,
maxTags: undefined,
maxChars: undefined,
confirmKeys: [13, 44],
delimiter: ',',
delimiterRegex: null,
cancelConfirmKeysOnEmpty: true,
onTagExists: function(item, $tag) {
$tag.hide().fadeIn();
},
trimValue: false,
allowDuplicates: false
};
/**
* Constructor function
*/
function TagsInput(element, options) {
this.itemsArray = [];
this.$element = $(element);
this.$element.hide();
this.isSelect = (element.tagName === 'SELECT');
this.multiple = (this.isSelect && element.hasAttribute('multiple'));
this.objectItems = options && options.itemValue;
this.placeholderText = element.hasAttribute('placeholder') ? this.$element.attr('placeholder') : '';
this.inputSize = Math.max(1, this.placeholderText.length);
this.$container = $('<div class="bootstrap-tagsinput"></div>');
this.$input = $('<input type="text" placeholder="' + this.placeholderText + '"/>').appendTo(this.$container);
this.$element.before(this.$container);
this.build(options);
}
TagsInput.prototype = {
constructor: TagsInput,
/**
* Adds the given item as a new tag. Pass true to dontPushVal to prevent
* updating the elements val()
*/
add: function(item, dontPushVal, options) {
var self = this;
if (self.options.maxTags && self.itemsArray.length >= self.options.maxTags)
return;
// Ignore falsey values, except false
if (item !== false && !item)
return;
// Trim value
if (typeof item === "string" && self.options.trimValue) {
item = $.trim(item);
}
// Throw an error when trying to add an object while the itemValue option was not set
if (typeof item === "object" && !self.objectItems)
throw("Can't add objects when itemValue option is not set");
// Ignore strings only containg whitespace
if (item.toString().match(/^\s*$/))
return;
// If SELECT but not multiple, remove current tag
if (self.isSelect && !self.multiple && self.itemsArray.length > 0)
self.remove(self.itemsArray[0]);
if (typeof item === "string" && this.$element[0].tagName === 'INPUT') {
var delimiter = (self.options.delimiterRegex) ? self.options.delimiterRegex : self.options.delimiter;
var items = item.split(delimiter);
if (items.length > 1) {
for (var i = 0; i < items.length; i++) {
this.add(items[i], true);
}
if (!dontPushVal)
self.pushVal();
return;
}
}
var itemValue = self.options.itemValue(item),
itemText = self.options.itemText(item),
tagClass = self.options.tagClass(item),
itemTitle = self.options.itemTitle(item);
// Ignore items allready added
var existing = $.grep(self.itemsArray, function(item) { return self.options.itemValue(item) === itemValue; } )[0];
if (existing && !self.options.allowDuplicates) {
// Invoke onTagExists
if (self.options.onTagExists) {
var $existingTag = $(".tag", self.$container).filter(function() { return $(this).data("item") === existing; });
self.options.onTagExists(item, $existingTag);
}
return;
}
// if length greater than limit
if (self.items().toString().length + item.length + 1 > self.options.maxInputLength)
return;
// raise beforeItemAdd arg
var beforeItemAddEvent = $.Event('beforeItemAdd', { item: item, cancel: false, options: options});
self.$element.trigger(beforeItemAddEvent);
if (beforeItemAddEvent.cancel)
return;
// register item in internal array and map
self.itemsArray.push(item);
// add a tag element
var $tag = $('<span class="tag ' + htmlEncode(tagClass) + (itemTitle !== null ? ('" title="' + itemTitle) : '') + '">' + htmlEncode(itemText) + '<span data-role="remove"></span></span>');
$tag.data('item', item);
self.findInputWrapper().before($tag);
$tag.after(' ');
// add <option /> if item represents a value not present in one of the <select />'s options
if (self.isSelect && !$('option[value="' + encodeURIComponent(itemValue) + '"]',self.$element)[0]) {
var $option = $('<option selected>' + htmlEncode(itemText) + '</option>');
$option.data('item', item);
$option.attr('value', itemValue);
self.$element.append($option);
}
if (!dontPushVal)
self.pushVal();
// Add class when reached maxTags
if (self.options.maxTags === self.itemsArray.length || self.items().toString().length === self.options.maxInputLength)
self.$container.addClass('bootstrap-tagsinput-max');
self.$element.trigger($.Event('itemAdded', { item: item, options: options }));
},
/**
* Removes the given item. Pass true to dontPushVal to prevent updating the
* elements val()
*/
remove: function(item, dontPushVal, options) {
var self = this;
if (self.objectItems) {
if (typeof item === "object")
item = $.grep(self.itemsArray, function(other) { return self.options.itemValue(other) == self.options.itemValue(item); } );
else
item = $.grep(self.itemsArray, function(other) { return self.options.itemValue(other) == item; } );
item = item[item.length-1];
}
if (item) {
var beforeItemRemoveEvent = $.Event('beforeItemRemove', { item: item, cancel: false, options: options });
self.$element.trigger(beforeItemRemoveEvent);
if (beforeItemRemoveEvent.cancel)
return;
$('.tag', self.$container).filter(function() { return $(this).data('item') === item; }).remove();
$('option', self.$element).filter(function() { return $(this).data('item') === item; }).remove();
if($.inArray(item, self.itemsArray) !== -1)
self.itemsArray.splice($.inArray(item, self.itemsArray), 1);
}
if (!dontPushVal)
self.pushVal();
// Remove class when reached maxTags
if (self.options.maxTags > self.itemsArray.length)
self.$container.removeClass('bootstrap-tagsinput-max');
self.$element.trigger($.Event('itemRemoved', { item: item, options: options }));
},
/**
* Removes all items
*/
removeAll: function() {
var self = this;
$('.tag', self.$container).remove();
$('option', self.$element).remove();
while(self.itemsArray.length > 0)
self.itemsArray.pop();
self.pushVal();
},
/**
* Refreshes the tags so they match the text/value of their corresponding
* item.
*/
refresh: function() {
var self = this;
$('.tag', self.$container).each(function() {
var $tag = $(this),
item = $tag.data('item'),
itemValue = self.options.itemValue(item),
itemText = self.options.itemText(item),
tagClass = self.options.tagClass(item);
// Update tag's class and inner text
$tag.attr('class', null);
$tag.addClass('tag ' + htmlEncode(tagClass));
$tag.contents().filter(function() {
return this.nodeType == 3;
})[0].nodeValue = htmlEncode(itemText);
if (self.isSelect) {
var option = $('option', self.$element).filter(function() { return $(this).data('item') === item; });
option.attr('value', itemValue);
}
});
},
/**
* Returns the items added as tags
*/
items: function() {
return this.itemsArray;
},
/**
* Assembly value by retrieving the value of each item, and set it on the
* element.
*/
pushVal: function() {
var self = this,
val = $.map(self.items(), function(item) {
return self.options.itemValue(item).toString();
});
self.$element.val(val, true).trigger('change');
},
/**
* Initializes the tags input behaviour on the element
*/
build: function(options) {
var self = this;
self.options = $.extend({}, defaultOptions, options);
// When itemValue is set, freeInput should always be false
if (self.objectItems)
self.options.freeInput = false;
makeOptionItemFunction(self.options, 'itemValue');
makeOptionItemFunction(self.options, 'itemText');
makeOptionFunction(self.options, 'tagClass');
// Typeahead Bootstrap version 2.3.2
if (self.options.typeahead) {
var typeahead = self.options.typeahead || {};
makeOptionFunction(typeahead, 'source');
self.$input.typeahead($.extend({}, typeahead, {
source: function (query, process) {
function processItems(items) {
var texts = [];
for (var i = 0; i < items.length; i++) {
var text = self.options.itemText(items[i]);
map[text] = items[i];
texts.push(text);
}
process(texts);
}
this.map = {};
var map = this.map,
data = typeahead.source(query);
if ($.isFunction(data.success)) {
// support for Angular callbacks
data.success(processItems);
} else if ($.isFunction(data.then)) {
// support for Angular promises
data.then(processItems);
} else {
// support for functions and jquery promises
$.when(data)
.then(processItems);
}
},
updater: function (text) {
self.add(this.map[text]);
return this.map[text];
},
matcher: function (text) {
return (text.toLowerCase().indexOf(this.query.trim().toLowerCase()) !== -1);
},
sorter: function (texts) {
return texts.sort();
},
highlighter: function (text) {
var regex = new RegExp( '(' + this.query + ')', 'gi' );
return text.replace( regex, "<strong>$1</strong>" );
}
}));
}
// typeahead.js
if (self.options.typeaheadjs) {
var typeaheadConfig = null;
var typeaheadDatasets = {};
// Determine if main configurations were passed or simply a dataset
var typeaheadjs = self.options.typeaheadjs;
if ($.isArray(typeaheadjs)) {
typeaheadConfig = typeaheadjs[0];
typeaheadDatasets = typeaheadjs[1];
} else {
typeaheadDatasets = typeaheadjs;
}
self.$input.typeahead(typeaheadConfig, typeaheadDatasets).on('typeahead:selected', $.proxy(function (obj, datum) {
if (typeaheadDatasets.valueKey)
self.add(datum[typeaheadDatasets.valueKey]);
else
self.add(datum);
self.$input.typeahead('val', '');
}, self));
}
self.$container.on('click', $.proxy(function(event) {
if (! self.$element.attr('disabled')) {
self.$input.removeAttr('disabled');
}
self.$input.focus();
}, self));
if (self.options.addOnBlur && self.options.freeInput) {
self.$input.on('focusout', $.proxy(function(event) {
// HACK: only process on focusout when no typeahead opened, to
// avoid adding the typeahead text as tag
if ($('.typeahead, .twitter-typeahead', self.$container).length === 0) {
self.add(self.$input.val());
self.$input.val('');
}
}, self));
}
self.$container.on('keydown', 'input', $.proxy(function(event) {
var $input = $(event.target),
$inputWrapper = self.findInputWrapper();
if (self.$element.attr('disabled')) {
self.$input.attr('disabled', 'disabled');
return;
}
switch (event.which) {
// BACKSPACE
case 8:
if (doGetCaretPosition($input[0]) === 0) {
var prev = $inputWrapper.prev();
if (prev.length) {
self.remove(prev.data('item'));
}
}
break;
// DELETE
case 46:
if (doGetCaretPosition($input[0]) === 0) {
var next = $inputWrapper.next();
if (next.length) {
self.remove(next.data('item'));
}
}
break;
// LEFT ARROW
case 37:
// Try to move the input before the previous tag
var $prevTag = $inputWrapper.prev();
if ($input.val().length === 0 && $prevTag[0]) {
$prevTag.before($inputWrapper);
$input.focus();
}
break;
// RIGHT ARROW
case 39:
// Try to move the input after the next tag
var $nextTag = $inputWrapper.next();
if ($input.val().length === 0 && $nextTag[0]) {
$nextTag.after($inputWrapper);
$input.focus();
}
break;
default:
// ignore
}
// Reset internal input's size
var textLength = $input.val().length,
wordSpace = Math.ceil(textLength / 5),
size = textLength + wordSpace + 1;
$input.attr('size', Math.max(this.inputSize, $input.val().length));
}, self));
self.$container.on('keypress', 'input', $.proxy(function(event) {
var $input = $(event.target);
if (self.$element.attr('disabled')) {
self.$input.attr('disabled', 'disabled');
return;
}
var text = $input.val(),
maxLengthReached = self.options.maxChars && text.length >= self.options.maxChars;
if (self.options.freeInput && (keyCombinationInList(event, self.options.confirmKeys) || maxLengthReached)) {
// Only attempt to add a tag if there is data in the field
if (text.length !== 0) {
self.add(maxLengthReached ? text.substr(0, self.options.maxChars) : text);
$input.val('');
}
// If the field is empty, let the event triggered fire as usual
if (self.options.cancelConfirmKeysOnEmpty === false) {
event.preventDefault();
}
}
// Reset internal input's size
var textLength = $input.val().length,
wordSpace = Math.ceil(textLength / 5),
size = textLength + wordSpace + 1;
$input.attr('size', Math.max(this.inputSize, $input.val().length));
}, self));
// Remove icon clicked
self.$container.on('click', '[data-role=remove]', $.proxy(function(event) {
if (self.$element.attr('disabled')) {
return;
}
self.remove($(event.target).closest('.tag').data('item'));
}, self));
// Only add existing value as tags when using strings as tags
if (self.options.itemValue === defaultOptions.itemValue) {
if (self.$element[0].tagName === 'INPUT') {
self.add(self.$element.val());
} else {
$('option', self.$element).each(function() {
self.add($(this).attr('value'), true);
});
}
}
},
/**
* Removes all tagsinput behaviour and unregsiter all event handlers
*/
destroy: function() {
var self = this;
// Unbind events
self.$container.off('keypress', 'input');
self.$container.off('click', '[role=remove]');
self.$container.remove();
self.$element.removeData('tagsinput');
self.$element.show();
},
/**
* Sets focus on the tagsinput
*/
focus: function() {
this.$input.focus();
},
/**
* Returns the internal input element
*/
input: function() {
return this.$input;
},
/**
* Returns the element which is wrapped around the internal input. This
* is normally the $container, but typeahead.js moves the $input element.
*/
findInputWrapper: function() {
var elt = this.$input[0],
container = this.$container[0];
while(elt && elt.parentNode !== container)
elt = elt.parentNode;
return $(elt);
}
};
/**
* Register JQuery plugin
*/
$.fn.tagsinput = function(arg1, arg2, arg3) {
var results = [];
this.each(function() {
var tagsinput = $(this).data('tagsinput');
// Initialize a new tags input
if (!tagsinput) {
tagsinput = new TagsInput(this, arg1);
$(this).data('tagsinput', tagsinput);
results.push(tagsinput);
if (this.tagName === 'SELECT') {
$('option', $(this)).attr('selected', 'selected');
}
// Init tags from $(this).val()
$(this).val($(this).val());
} else if (!arg1 && !arg2) {
// tagsinput already exists
// no function, trying to init
results.push(tagsinput);
} else if(tagsinput[arg1] !== undefined) {
// Invoke function on existing tags input
if(tagsinput[arg1].length === 3 && arg3 !== undefined){
var retVal = tagsinput[arg1](arg2, null, arg3);
}else{
var retVal = tagsinput[arg1](arg2);
}
if (retVal !== undefined)
results.push(retVal);
}
});
if ( typeof arg1 == 'string') {
// Return the results from the invoked function calls
return results.length > 1 ? results : results[0];
} else {
return results;
}
};
$.fn.tagsinput.Constructor = TagsInput;
/**
* Most options support both a string or number as well as a function as
* option value. This function makes sure that the option with the given
* key in the given options is wrapped in a function
*/
function makeOptionItemFunction(options, key) {
if (typeof options[key] !== 'function') {
var propertyName = options[key];
options[key] = function(item) { return item[propertyName]; };
}
}
function makeOptionFunction(options, key) {
if (typeof options[key] !== 'function') {
var value = options[key];
options[key] = function() { return value; };
}
}
/**
* HtmlEncodes the given value
*/
var htmlEncodeContainer = $('<div />');
function htmlEncode(value) {
if (value) {
return htmlEncodeContainer.text(value).html();
} else {
return '';
}
}
/**
* Returns the position of the caret in the given input field
* http://flightschool.acylt.com/devnotes/caret-position-woes/
*/
function doGetCaretPosition(oField) {
var iCaretPos = 0;
if (document.selection) {
oField.focus ();
var oSel = document.selection.createRange();
oSel.moveStart ('character', -oField.value.length);
iCaretPos = oSel.text.length;
} else if (oField.selectionStart || oField.selectionStart == '0') {
iCaretPos = oField.selectionStart;
}
return (iCaretPos);
}
/**
* Returns boolean indicates whether user has pressed an expected key combination.
* @param object keyPressEvent: JavaScript event object, refer
* http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
* @param object lookupList: expected key combinations, as in:
* [13, {which: 188, shiftKey: true}]
*/
function keyCombinationInList(keyPressEvent, lookupList) {
var found = false;
$.each(lookupList, function (index, keyCombination) {
if (typeof (keyCombination) === 'number' && keyPressEvent.which === keyCombination) {
found = true;
return false;
}
if (keyPressEvent.which === keyCombination.which) {
var alt = !keyCombination.hasOwnProperty('altKey') || keyPressEvent.altKey === keyCombination.altKey,
shift = !keyCombination.hasOwnProperty('shiftKey') || keyPressEvent.shiftKey === keyCombination.shiftKey,
ctrl = !keyCombination.hasOwnProperty('ctrlKey') || keyPressEvent.ctrlKey === keyCombination.ctrlKey;
if (alt && shift && ctrl) {
found = true;
return false;
}
}
});
return found;
}
/**
* Initialize tagsinput behaviour on inputs and selects which have
* data-role=tagsinput
*/
$(function() {
$("input[data-role=tagsinput], select[multiple][data-role=tagsinput]").tagsinput();
});
})(window.jQuery);

View File

@ -0,0 +1,50 @@
.bootstrap-tagsinput {
background-color: #fff;
border: 1px solid #ccc;
box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
display: inline-block;
padding: 4px 6px;
margin-bottom: 10px;
color: #555;
vertical-align: middle;
border-radius: 4px;
max-width: 100%;
line-height: 22px;
cursor: text;
input {
border: none;
box-shadow: none;
outline: none;
background-color: transparent;
padding: 0;
margin: 0;
width: auto !important;
max-width: inherit;
&:focus {
border: none;
box-shadow: none;
}
}
.tag {
margin-right: 2px;
color: white;
[data-role="remove"] {
margin-left:8px;
cursor:pointer;
&:after{
content: "x";
padding:0px 2px;
}
&:hover {
box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
&:active {
box-shadow: inset 0 3px 5px rgba(0,0,0,0.125);
}
}
}
}
}

File diff suppressed because one or more lines are too long

File diff suppressed because one or more lines are too long

View File

@ -48,12 +48,15 @@ textarea{
-o-border-radius: 6px;
border-radius: 6px;
}
.bootstrap-tagsinput{
display: block !important;
}
.manual-header{
margin-bottom: 0;
background-color: #fff;
border-bottom: 0;
box-shadow: rgba(0,0,0,.1)0 1px 5px;
border-top: 3px solid #009a61
}
.manual-header .navbar-brand,.manual-header a {
font-weight: 500;
@ -106,9 +109,48 @@ textarea{
line-height: 1;
color: #9ba3af;
}
/**************首页标签*******************/
.tag-container-outer{
border-bottom: 1px solid #eee;
padding-top: 5px;
padding-bottom: 5px;
line-height: 30px;
position: relative;
display: block !important;
margin-top: 15px;
}
.tag-container-outer .title{
font-weight: 400;
font-size: 14px;
}
.tag-container-outer .tags a{
display: inline-block;
vertical-align: baseline;
line-height: 1;
border-radius: 0.3rem;
transition: background .1s ease;
cursor: pointer;
background-color: #e0e0e0;
margin: 0 .5em .5em 0!important;
padding: 0.5rem 0.8rem;
color: #999999;
opacity: 0.8;
}
.tag-container-outer .tags a:hover{
color: #666666;
opacity: 1;
}
.tag-container-outer .tags a>.detail{
display: inline-block;
vertical-align: top;
font-weight: 400;
margin-left: 1em;
opacity: .8
}
/*********************************/
.manual-body{
margin-top: 50px;
margin-top: 53px;
}
.manual-body .page-left{
position: fixed;

View File

@ -8,6 +8,15 @@ Also, because the net/html parser requires UTF-8 encoding, so does goquery: it i
Syntax-wise, it is as close as possible to jQuery, with the same function names when possible, and that warm and fuzzy chainable interface. jQuery being the ultra-popular library that it is, I felt that writing a similar HTML-manipulating library was better to follow its API than to start anew (in the same spirit as Go's `fmt` package), even though some of its methods are less than intuitive (looking at you, [index()][index]...).
## Table of Contents
* [Installation](#installation)
* [Changelog](#changelog)
* [API](#api)
* [Examples](#examples)
* [Related Projects](#related-projects)
* [License](#license)
## Installation
Please note that because of the net/html dependency, goquery requires Go1.1+.
@ -107,18 +116,20 @@ func main() {
}
```
## Related Projects
- [Goq][goq], an HTML deserialization and scraping library based on goquery and struct tags.
- [andybalholm/cascadia][cascadia], the CSS selector library used by goquery.
- [suntong/cascadia][cascadiacli], a command-line interface to the cascadia CSS selector library, useful to test selectors.
## License
The [BSD 3-Clause license][bsd], the same as the [Go language][golic]. Cascadia's license is [here][caslic].
## Downstream Projects
- [Goq][goq], an HTML deserialization and scraping library based on goquery and struct
tags.
[jquery]: http://jquery.com/
[go]: http://golang.org/
[cascadia]: https://github.com/andybalholm/cascadia
[cascadiacli]: https://github.com/suntong/cascadia
[bsd]: http://opensource.org/licenses/BSD-3-Clause
[golic]: http://golang.org/LICENSE
[caslic]: https://github.com/andybalholm/cascadia/blob/master/LICENSE

View File

@ -0,0 +1,8 @@
*.out
*.swp
*.8
*.6
_obj
_test*
markdown
tags

View File

@ -0,0 +1,30 @@
sudo: false
language: go
go:
- 1.5.4
- 1.6.2
- tip
matrix:
include:
- go: 1.2.2
script:
- go get -t -v ./...
- go test -v -race ./...
- go: 1.3.3
script:
- go get -t -v ./...
- go test -v -race ./...
- go: 1.4.3
script:
- go get -t -v ./...
- go test -v -race ./...
allow_failures:
- go: tip
fast_finish: true
install:
- # Do nothing. This is needed to prevent default install action "go get -t -v ./..." from happening here (we want it to happen inside script step).
script:
- go get -t -v ./...
- diff -u <(echo -n) <(gofmt -d -s .)
- go tool vet .
- go test -v -race ./...

View File

@ -0,0 +1,29 @@
Blackfriday is distributed under the Simplified BSD License:
> Copyright © 2011 Russ Ross
> All rights reserved.
>
> Redistribution and use in source and binary forms, with or without
> modification, are permitted provided that the following conditions
> are met:
>
> 1. Redistributions of source code must retain the above copyright
> notice, this list of conditions and the following disclaimer.
>
> 2. Redistributions in binary form must reproduce the above
> copyright notice, this list of conditions and the following
> disclaimer in the documentation and/or other materials provided with
> the distribution.
>
> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
> "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
> LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
> FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
> COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
> INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
> BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
> LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
> CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
> LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
> ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
> POSSIBILITY OF SUCH DAMAGE.

292
vendor/github.com/russross/blackfriday/README.md generated vendored 100644
View File

@ -0,0 +1,292 @@
Blackfriday [![Build Status](https://travis-ci.org/russross/blackfriday.svg?branch=master)](https://travis-ci.org/russross/blackfriday) [![GoDoc](https://godoc.org/github.com/russross/blackfriday?status.svg)](https://godoc.org/github.com/russross/blackfriday)
===========
Blackfriday is a [Markdown][1] processor implemented in [Go][2]. It
is paranoid about its input (so you can safely feed it user-supplied
data), it is fast, it supports common extensions (tables, smart
punctuation substitutions, etc.), and it is safe for all utf-8
(unicode) input.
HTML output is currently supported, along with Smartypants
extensions. An experimental LaTeX output engine is also included.
It started as a translation from C of [Sundown][3].
Installation
------------
Blackfriday is compatible with Go 1. If you are using an older
release of Go, consider using v1.1 of blackfriday, which was based
on the last stable release of Go prior to Go 1. You can find it as a
tagged commit on github.
With Go 1 and git installed:
go get github.com/russross/blackfriday
will download, compile, and install the package into your `$GOPATH`
directory hierarchy. Alternatively, you can achieve the same if you
import it into a project:
import "github.com/russross/blackfriday"
and `go get` without parameters.
Usage
-----
For basic usage, it is as simple as getting your input into a byte
slice and calling:
output := blackfriday.MarkdownBasic(input)
This renders it with no extensions enabled. To get a more useful
feature set, use this instead:
output := blackfriday.MarkdownCommon(input)
### Sanitize untrusted content
Blackfriday itself does nothing to protect against malicious content. If you are
dealing with user-supplied markdown, we recommend running blackfriday's output
through HTML sanitizer such as
[Bluemonday](https://github.com/microcosm-cc/bluemonday).
Here's an example of simple usage of blackfriday together with bluemonday:
``` go
import (
"github.com/microcosm-cc/bluemonday"
"github.com/russross/blackfriday"
)
// ...
unsafe := blackfriday.MarkdownCommon(input)
html := bluemonday.UGCPolicy().SanitizeBytes(unsafe)
```
### Custom options
If you want to customize the set of options, first get a renderer
(currently either the HTML or LaTeX output engines), then use it to
call the more general `Markdown` function. For examples, see the
implementations of `MarkdownBasic` and `MarkdownCommon` in
`markdown.go`.
You can also check out `blackfriday-tool` for a more complete example
of how to use it. Download and install it using:
go get github.com/russross/blackfriday-tool
This is a simple command-line tool that allows you to process a
markdown file using a standalone program. You can also browse the
source directly on github if you are just looking for some example
code:
* <http://github.com/russross/blackfriday-tool>
Note that if you have not already done so, installing
`blackfriday-tool` will be sufficient to download and install
blackfriday in addition to the tool itself. The tool binary will be
installed in `$GOPATH/bin`. This is a statically-linked binary that
can be copied to wherever you need it without worrying about
dependencies and library versions.
### Sanitized anchor names
Blackfriday includes an algorithm for creating sanitized anchor names
corresponding to a given input text. This algorithm is used to create
anchors for headings when `EXTENSION_AUTO_HEADER_IDS` is enabled. The
algorithm has a specification, so that other packages can create
compatible anchor names and links to those anchors.
The specification is located at https://godoc.org/github.com/russross/blackfriday#hdr-Sanitized_Anchor_Names.
[`SanitizedAnchorName`](https://godoc.org/github.com/russross/blackfriday#SanitizedAnchorName) exposes this functionality, and can be used to
create compatible links to the anchor names generated by blackfriday.
This algorithm is also implemented in a small standalone package at
[`github.com/shurcooL/sanitized_anchor_name`](https://godoc.org/github.com/shurcooL/sanitized_anchor_name). It can be useful for clients
that want a small package and don't need full functionality of blackfriday.
Features
--------
All features of Sundown are supported, including:
* **Compatibility**. The Markdown v1.0.3 test suite passes with
the `--tidy` option. Without `--tidy`, the differences are
mostly in whitespace and entity escaping, where blackfriday is
more consistent and cleaner.
* **Common extensions**, including table support, fenced code
blocks, autolinks, strikethroughs, non-strict emphasis, etc.
* **Safety**. Blackfriday is paranoid when parsing, making it safe
to feed untrusted user input without fear of bad things
happening. The test suite stress tests this and there are no
known inputs that make it crash. If you find one, please let me
know and send me the input that does it.
NOTE: "safety" in this context means *runtime safety only*. In order to
protect yourself against JavaScript injection in untrusted content, see
[this example](https://github.com/russross/blackfriday#sanitize-untrusted-content).
* **Fast processing**. It is fast enough to render on-demand in
most web applications without having to cache the output.
* **Thread safety**. You can run multiple parsers in different
goroutines without ill effect. There is no dependence on global
shared state.
* **Minimal dependencies**. Blackfriday only depends on standard
library packages in Go. The source code is pretty
self-contained, so it is easy to add to any project, including
Google App Engine projects.
* **Standards compliant**. Output successfully validates using the
W3C validation tool for HTML 4.01 and XHTML 1.0 Transitional.
Extensions
----------
In addition to the standard markdown syntax, this package
implements the following extensions:
* **Intra-word emphasis supression**. The `_` character is
commonly used inside words when discussing code, so having
markdown interpret it as an emphasis command is usually the
wrong thing. Blackfriday lets you treat all emphasis markers as
normal characters when they occur inside a word.
* **Tables**. Tables can be created by drawing them in the input
using a simple syntax:
```
Name | Age
--------|------
Bob | 27
Alice | 23
```
* **Fenced code blocks**. In addition to the normal 4-space
indentation to mark code blocks, you can explicitly mark them
and supply a language (to make syntax highlighting simple). Just
mark it like this:
``` go
func getTrue() bool {
return true
}
```
You can use 3 or more backticks to mark the beginning of the
block, and the same number to mark the end of the block.
To preserve classes of fenced code blocks while using the bluemonday
HTML sanitizer, use the following policy:
``` go
p := bluemonday.UGCPolicy()
p.AllowAttrs("class").Matching(regexp.MustCompile("^language-[a-zA-Z0-9]+$")).OnElements("code")
html := p.SanitizeBytes(unsafe)
```
* **Definition lists**. A simple definition list is made of a single-line
term followed by a colon and the definition for that term.
Cat
: Fluffy animal everyone likes
Internet
: Vector of transmission for pictures of cats
Terms must be separated from the previous definition by a blank line.
* **Footnotes**. A marker in the text that will become a superscript number;
a footnote definition that will be placed in a list of footnotes at the
end of the document. A footnote looks like this:
This is a footnote.[^1]
[^1]: the footnote text.
* **Autolinking**. Blackfriday can find URLs that have not been
explicitly marked as links and turn them into links.
* **Strikethrough**. Use two tildes (`~~`) to mark text that
should be crossed out.
* **Hard line breaks**. With this extension enabled (it is off by
default in the `MarkdownBasic` and `MarkdownCommon` convenience
functions), newlines in the input translate into line breaks in
the output.
* **Smart quotes**. Smartypants-style punctuation substitution is
supported, turning normal double- and single-quote marks into
curly quotes, etc.
* **LaTeX-style dash parsing** is an additional option, where `--`
is translated into `&ndash;`, and `---` is translated into
`&mdash;`. This differs from most smartypants processors, which
turn a single hyphen into an ndash and a double hyphen into an
mdash.
* **Smart fractions**, where anything that looks like a fraction
is translated into suitable HTML (instead of just a few special
cases like most smartypant processors). For example, `4/5`
becomes `<sup>4</sup>&frasl;<sub>5</sub>`, which renders as
<sup>4</sup>&frasl;<sub>5</sub>.
Other renderers
---------------
Blackfriday is structured to allow alternative rendering engines. Here
are a few of note:
* [github_flavored_markdown](https://godoc.org/github.com/shurcooL/github_flavored_markdown):
provides a GitHub Flavored Markdown renderer with fenced code block
highlighting, clickable header anchor links.
It's not customizable, and its goal is to produce HTML output
equivalent to the [GitHub Markdown API endpoint](https://developer.github.com/v3/markdown/#render-a-markdown-document-in-raw-mode),
except the rendering is performed locally.
* [markdownfmt](https://github.com/shurcooL/markdownfmt): like gofmt,
but for markdown.
* LaTeX output: renders output as LaTeX. This is currently part of the
main Blackfriday repository, but may be split into its own project
in the future. If you are interested in owning and maintaining the
LaTeX output component, please be in touch.
It renders some basic documents, but is only experimental at this
point. In particular, it does not do any inline escaping, so input
that happens to look like LaTeX code will be passed through without
modification.
* [Md2Vim](https://github.com/FooSoft/md2vim): transforms markdown files into vimdoc format.
Todo
----
* More unit testing
* Improve unicode support. It does not understand all unicode
rules (about what constitutes a letter, a punctuation symbol,
etc.), so it may fail to detect word boundaries correctly in
some instances. It is safe on all utf-8 input.
License
-------
[Blackfriday is distributed under the Simplified BSD License](LICENSE.txt)
[1]: http://daringfireball.net/projects/markdown/ "Markdown"
[2]: http://golang.org/ "Go Language"
[3]: https://github.com/vmg/sundown "Sundown"

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// Package blackfriday is a Markdown processor.
//
// It translates plain text with simple formatting rules into HTML or LaTeX.
//
// Sanitized Anchor Names
//
// Blackfriday includes an algorithm for creating sanitized anchor names
// corresponding to a given input text. This algorithm is used to create
// anchors for headings when EXTENSION_AUTO_HEADER_IDS is enabled. The
// algorithm is specified below, so that other packages can create
// compatible anchor names and links to those anchors.
//
// The algorithm iterates over the input text, interpreted as UTF-8,
// one Unicode code point (rune) at a time. All runes that are letters (category L)
// or numbers (category N) are considered valid characters. They are mapped to
// lower case, and included in the output. All other runes are considered
// invalid characters. Invalid characters that preceed the first valid character,
// as well as invalid character that follow the last valid character
// are dropped completely. All other sequences of invalid characters
// between two valid characters are replaced with a single dash character '-'.
//
// SanitizedAnchorName exposes this functionality, and can be used to
// create compatible links to the anchor names generated by blackfriday.
// This algorithm is also implemented in a small standalone package at
// github.com/shurcooL/sanitized_anchor_name. It can be useful for clients
// that want a small package and don't need full functionality of blackfriday.
package blackfriday
// NOTE: Keep Sanitized Anchor Name algorithm in sync with package
// github.com/shurcooL/sanitized_anchor_name.
// Otherwise, users of sanitized_anchor_name will get anchor names
// that are incompatible with those generated by blackfriday.

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//
// Blackfriday Markdown Processor
// Available at http://github.com/russross/blackfriday
//
// Copyright © 2011 Russ Ross <russ@russross.com>.
// Distributed under the Simplified BSD License.
// See README.md for details.
//
//
//
// HTML rendering backend
//
//
package blackfriday
import (
"bytes"
"fmt"
"regexp"
"strconv"
"strings"
)
// Html renderer configuration options.
const (
HTML_SKIP_HTML = 1 << iota // skip preformatted HTML blocks
HTML_SKIP_STYLE // skip embedded <style> elements
HTML_SKIP_IMAGES // skip embedded images
HTML_SKIP_LINKS // skip all links
HTML_SAFELINK // only link to trusted protocols
HTML_NOFOLLOW_LINKS // only link with rel="nofollow"
HTML_NOREFERRER_LINKS // only link with rel="noreferrer"
HTML_HREF_TARGET_BLANK // add a blank target
HTML_TOC // generate a table of contents
HTML_OMIT_CONTENTS // skip the main contents (for a standalone table of contents)
HTML_COMPLETE_PAGE // generate a complete HTML page
HTML_USE_XHTML // generate XHTML output instead of HTML
HTML_USE_SMARTYPANTS // enable smart punctuation substitutions
HTML_SMARTYPANTS_FRACTIONS // enable smart fractions (with HTML_USE_SMARTYPANTS)
HTML_SMARTYPANTS_DASHES // enable smart dashes (with HTML_USE_SMARTYPANTS)
HTML_SMARTYPANTS_LATEX_DASHES // enable LaTeX-style dashes (with HTML_USE_SMARTYPANTS and HTML_SMARTYPANTS_DASHES)
HTML_SMARTYPANTS_ANGLED_QUOTES // enable angled double quotes (with HTML_USE_SMARTYPANTS) for double quotes rendering
HTML_FOOTNOTE_RETURN_LINKS // generate a link at the end of a footnote to return to the source
)
var (
alignments = []string{
"left",
"right",
"center",
}
// TODO: improve this regexp to catch all possible entities:
htmlEntity = regexp.MustCompile(`&[a-z]{2,5};`)
)
type HtmlRendererParameters struct {
// Prepend this text to each relative URL.
AbsolutePrefix string
// Add this text to each footnote anchor, to ensure uniqueness.
FootnoteAnchorPrefix string
// Show this text inside the <a> tag for a footnote return link, if the
// HTML_FOOTNOTE_RETURN_LINKS flag is enabled. If blank, the string
// <sup>[return]</sup> is used.
FootnoteReturnLinkContents string
// If set, add this text to the front of each Header ID, to ensure
// uniqueness.
HeaderIDPrefix string
// If set, add this text to the back of each Header ID, to ensure uniqueness.
HeaderIDSuffix string
}
// Html is a type that implements the Renderer interface for HTML output.
//
// Do not create this directly, instead use the HtmlRenderer function.
type Html struct {
flags int // HTML_* options
closeTag string // how to end singleton tags: either " />" or ">"
title string // document title
css string // optional css file url (used with HTML_COMPLETE_PAGE)
parameters HtmlRendererParameters
// table of contents data
tocMarker int
headerCount int
currentLevel int
toc *bytes.Buffer
// Track header IDs to prevent ID collision in a single generation.
headerIDs map[string]int
smartypants *smartypantsRenderer
}
const (
xhtmlClose = " />"
htmlClose = ">"
)
// HtmlRenderer creates and configures an Html object, which
// satisfies the Renderer interface.
//
// flags is a set of HTML_* options ORed together.
// title is the title of the document, and css is a URL for the document's
// stylesheet.
// title and css are only used when HTML_COMPLETE_PAGE is selected.
func HtmlRenderer(flags int, title string, css string) Renderer {
return HtmlRendererWithParameters(flags, title, css, HtmlRendererParameters{})
}
func HtmlRendererWithParameters(flags int, title string,
css string, renderParameters HtmlRendererParameters) Renderer {
// configure the rendering engine
closeTag := htmlClose
if flags&HTML_USE_XHTML != 0 {
closeTag = xhtmlClose
}
if renderParameters.FootnoteReturnLinkContents == "" {
renderParameters.FootnoteReturnLinkContents = `<sup>[return]</sup>`
}
return &Html{
flags: flags,
closeTag: closeTag,
title: title,
css: css,
parameters: renderParameters,
headerCount: 0,
currentLevel: 0,
toc: new(bytes.Buffer),
headerIDs: make(map[string]int),
smartypants: smartypants(flags),
}
}
// Using if statements is a bit faster than a switch statement. As the compiler
// improves, this should be unnecessary this is only worthwhile because
// attrEscape is the single largest CPU user in normal use.
// Also tried using map, but that gave a ~3x slowdown.
func escapeSingleChar(char byte) (string, bool) {
if char == '"' {
return "&quot;", true
}
if char == '&' {
return "&amp;", true
}
if char == '<' {
return "&lt;", true
}
if char == '>' {
return "&gt;", true
}
return "", false
}
func attrEscape(out *bytes.Buffer, src []byte) {
org := 0
for i, ch := range src {
if entity, ok := escapeSingleChar(ch); ok {
if i > org {
// copy all the normal characters since the last escape
out.Write(src[org:i])
}
org = i + 1
out.WriteString(entity)
}
}
if org < len(src) {
out.Write(src[org:])
}
}
func entityEscapeWithSkip(out *bytes.Buffer, src []byte, skipRanges [][]int) {
end := 0
for _, rang := range skipRanges {
attrEscape(out, src[end:rang[0]])
out.Write(src[rang[0]:rang[1]])
end = rang[1]
}
attrEscape(out, src[end:])
}
func (options *Html) GetFlags() int {
return options.flags
}
func (options *Html) TitleBlock(out *bytes.Buffer, text []byte) {
text = bytes.TrimPrefix(text, []byte("% "))
text = bytes.Replace(text, []byte("\n% "), []byte("\n"), -1)
out.WriteString("<h1 class=\"title\">")
out.Write(text)
out.WriteString("\n</h1>")
}
func (options *Html) Header(out *bytes.Buffer, text func() bool, level int, id string) {
marker := out.Len()
doubleSpace(out)
if id == "" && options.flags&HTML_TOC != 0 {
id = fmt.Sprintf("toc_%d", options.headerCount)
}
if id != "" {
id = options.ensureUniqueHeaderID(id)
if options.parameters.HeaderIDPrefix != "" {
id = options.parameters.HeaderIDPrefix + id
}
if options.parameters.HeaderIDSuffix != "" {
id = id + options.parameters.HeaderIDSuffix
}
out.WriteString(fmt.Sprintf("<h%d id=\"%s\">", level, id))
} else {
out.WriteString(fmt.Sprintf("<h%d>", level))
}
tocMarker := out.Len()
if !text() {
out.Truncate(marker)
return
}
// are we building a table of contents?
if options.flags&HTML_TOC != 0 {
options.TocHeaderWithAnchor(out.Bytes()[tocMarker:], level, id)
}
out.WriteString(fmt.Sprintf("</h%d>\n", level))
}
func (options *Html) BlockHtml(out *bytes.Buffer, text []byte) {
if options.flags&HTML_SKIP_HTML != 0 {
return
}
doubleSpace(out)
out.Write(text)
out.WriteByte('\n')
}
func (options *Html) HRule(out *bytes.Buffer) {
doubleSpace(out)
out.WriteString("<hr")
out.WriteString(options.closeTag)
out.WriteByte('\n')
}
func (options *Html) BlockCode(out *bytes.Buffer, text []byte, lang string) {
doubleSpace(out)
// parse out the language names/classes
count := 0
for _, elt := range strings.Fields(lang) {
if elt[0] == '.' {
elt = elt[1:]
}
if len(elt) == 0 {
continue
}
if count == 0 {
out.WriteString("<pre><code class=\"language-")
} else {
out.WriteByte(' ')
}
attrEscape(out, []byte(elt))
count++
}
if count == 0 {
out.WriteString("<pre><code>")
} else {
out.WriteString("\">")
}
attrEscape(out, text)
out.WriteString("</code></pre>\n")
}
func (options *Html) BlockQuote(out *bytes.Buffer, text []byte) {
doubleSpace(out)
out.WriteString("<blockquote>\n")
out.Write(text)
out.WriteString("</blockquote>\n")
}
func (options *Html) Table(out *bytes.Buffer, header []byte, body []byte, columnData []int) {
doubleSpace(out)
out.WriteString("<table>\n<thead>\n")
out.Write(header)
out.WriteString("</thead>\n\n<tbody>\n")
out.Write(body)
out.WriteString("</tbody>\n</table>\n")
}
func (options *Html) TableRow(out *bytes.Buffer, text []byte) {
doubleSpace(out)
out.WriteString("<tr>\n")
out.Write(text)
out.WriteString("\n</tr>\n")
}
func (options *Html) TableHeaderCell(out *bytes.Buffer, text []byte, align int) {
doubleSpace(out)
switch align {
case TABLE_ALIGNMENT_LEFT:
out.WriteString("<th align=\"left\">")
case TABLE_ALIGNMENT_RIGHT:
out.WriteString("<th align=\"right\">")
case TABLE_ALIGNMENT_CENTER:
out.WriteString("<th align=\"center\">")
default:
out.WriteString("<th>")
}
out.Write(text)
out.WriteString("</th>")
}
func (options *Html) TableCell(out *bytes.Buffer, text []byte, align int) {
doubleSpace(out)
switch align {
case TABLE_ALIGNMENT_LEFT:
out.WriteString("<td align=\"left\">")
case TABLE_ALIGNMENT_RIGHT:
out.WriteString("<td align=\"right\">")
case TABLE_ALIGNMENT_CENTER:
out.WriteString("<td align=\"center\">")
default:
out.WriteString("<td>")
}
out.Write(text)
out.WriteString("</td>")
}
func (options *Html) Footnotes(out *bytes.Buffer, text func() bool) {
out.WriteString("<div class=\"footnotes\">\n")
options.HRule(out)
options.List(out, text, LIST_TYPE_ORDERED)
out.WriteString("</div>\n")
}
func (options *Html) FootnoteItem(out *bytes.Buffer, name, text []byte, flags int) {
if flags&LIST_ITEM_CONTAINS_BLOCK != 0 || flags&LIST_ITEM_BEGINNING_OF_LIST != 0 {
doubleSpace(out)
}
slug := slugify(name)
out.WriteString(`<li id="`)
out.WriteString(`fn:`)
out.WriteString(options.parameters.FootnoteAnchorPrefix)
out.Write(slug)
out.WriteString(`">`)
out.Write(text)
if options.flags&HTML_FOOTNOTE_RETURN_LINKS != 0 {
out.WriteString(` <a class="footnote-return" href="#`)
out.WriteString(`fnref:`)
out.WriteString(options.parameters.FootnoteAnchorPrefix)
out.Write(slug)
out.WriteString(`">`)
out.WriteString(options.parameters.FootnoteReturnLinkContents)
out.WriteString(`</a>`)
}
out.WriteString("</li>\n")
}
func (options *Html) List(out *bytes.Buffer, text func() bool, flags int) {
marker := out.Len()
doubleSpace(out)
if flags&LIST_TYPE_DEFINITION != 0 {
out.WriteString("<dl>")
} else if flags&LIST_TYPE_ORDERED != 0 {
out.WriteString("<ol>")
} else {
out.WriteString("<ul>")
}
if !text() {
out.Truncate(marker)
return
}
if flags&LIST_TYPE_DEFINITION != 0 {
out.WriteString("</dl>\n")
} else if flags&LIST_TYPE_ORDERED != 0 {
out.WriteString("</ol>\n")
} else {
out.WriteString("</ul>\n")
}
}
func (options *Html) ListItem(out *bytes.Buffer, text []byte, flags int) {
if (flags&LIST_ITEM_CONTAINS_BLOCK != 0 && flags&LIST_TYPE_DEFINITION == 0) ||
flags&LIST_ITEM_BEGINNING_OF_LIST != 0 {
doubleSpace(out)
}
if flags&LIST_TYPE_TERM != 0 {
out.WriteString("<dt>")
} else if flags&LIST_TYPE_DEFINITION != 0 {
out.WriteString("<dd>")
} else {
out.WriteString("<li>")
}
out.Write(text)
if flags&LIST_TYPE_TERM != 0 {
out.WriteString("</dt>\n")
} else if flags&LIST_TYPE_DEFINITION != 0 {
out.WriteString("</dd>\n")
} else {
out.WriteString("</li>\n")
}
}
func (options *Html) Paragraph(out *bytes.Buffer, text func() bool) {
marker := out.Len()
doubleSpace(out)
out.WriteString("<p>")
if !text() {
out.Truncate(marker)
return
}
out.WriteString("</p>\n")
}
func (options *Html) AutoLink(out *bytes.Buffer, link []byte, kind int) {
skipRanges := htmlEntity.FindAllIndex(link, -1)
if options.flags&HTML_SAFELINK != 0 && !isSafeLink(link) && kind != LINK_TYPE_EMAIL {
// mark it but don't link it if it is not a safe link: no smartypants
out.WriteString("<tt>")
entityEscapeWithSkip(out, link, skipRanges)
out.WriteString("</tt>")
return
}
out.WriteString("<a href=\"")
if kind == LINK_TYPE_EMAIL {
out.WriteString("mailto:")
} else {
options.maybeWriteAbsolutePrefix(out, link)
}
entityEscapeWithSkip(out, link, skipRanges)
var relAttrs []string
if options.flags&HTML_NOFOLLOW_LINKS != 0 && !isRelativeLink(link) {
relAttrs = append(relAttrs, "nofollow")
}
if options.flags&HTML_NOREFERRER_LINKS != 0 && !isRelativeLink(link) {
relAttrs = append(relAttrs, "noreferrer")
}
if len(relAttrs) > 0 {
out.WriteString(fmt.Sprintf("\" rel=\"%s", strings.Join(relAttrs, " ")))
}
// blank target only add to external link
if options.flags&HTML_HREF_TARGET_BLANK != 0 && !isRelativeLink(link) {
out.WriteString("\" target=\"_blank")
}
out.WriteString("\">")
// Pretty print: if we get an email address as
// an actual URI, e.g. `mailto:foo@bar.com`, we don't
// want to print the `mailto:` prefix
switch {
case bytes.HasPrefix(link, []byte("mailto://")):
attrEscape(out, link[len("mailto://"):])
case bytes.HasPrefix(link, []byte("mailto:")):
attrEscape(out, link[len("mailto:"):])
default:
entityEscapeWithSkip(out, link, skipRanges)
}
out.WriteString("</a>")
}
func (options *Html) CodeSpan(out *bytes.Buffer, text []byte) {
out.WriteString("<code>")
attrEscape(out, text)
out.WriteString("</code>")
}
func (options *Html) DoubleEmphasis(out *bytes.Buffer, text []byte) {
out.WriteString("<strong>")
out.Write(text)
out.WriteString("</strong>")
}
func (options *Html) Emphasis(out *bytes.Buffer, text []byte) {
if len(text) == 0 {
return
}
out.WriteString("<em>")
out.Write(text)
out.WriteString("</em>")
}
func (options *Html) maybeWriteAbsolutePrefix(out *bytes.Buffer, link []byte) {
if options.parameters.AbsolutePrefix != "" && isRelativeLink(link) && link[0] != '.' {
out.WriteString(options.parameters.AbsolutePrefix)
if link[0] != '/' {
out.WriteByte('/')
}
}
}
func (options *Html) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte) {
if options.flags&HTML_SKIP_IMAGES != 0 {
return
}
out.WriteString("<img src=\"")
options.maybeWriteAbsolutePrefix(out, link)
attrEscape(out, link)
out.WriteString("\" alt=\"")
if len(alt) > 0 {
attrEscape(out, alt)
}
if len(title) > 0 {
out.WriteString("\" title=\"")
attrEscape(out, title)
}
out.WriteByte('"')
out.WriteString(options.closeTag)
}
func (options *Html) LineBreak(out *bytes.Buffer) {
out.WriteString("<br")
out.WriteString(options.closeTag)
out.WriteByte('\n')
}
func (options *Html) Link(out *bytes.Buffer, link []byte, title []byte, content []byte) {
if options.flags&HTML_SKIP_LINKS != 0 {
// write the link text out but don't link it, just mark it with typewriter font
out.WriteString("<tt>")
attrEscape(out, content)
out.WriteString("</tt>")
return
}
if options.flags&HTML_SAFELINK != 0 && !isSafeLink(link) {
// write the link text out but don't link it, just mark it with typewriter font
out.WriteString("<tt>")
attrEscape(out, content)
out.WriteString("</tt>")
return
}
out.WriteString("<a href=\"")
options.maybeWriteAbsolutePrefix(out, link)
attrEscape(out, link)
if len(title) > 0 {
out.WriteString("\" title=\"")
attrEscape(out, title)
}
var relAttrs []string
if options.flags&HTML_NOFOLLOW_LINKS != 0 && !isRelativeLink(link) {
relAttrs = append(relAttrs, "nofollow")
}
if options.flags&HTML_NOREFERRER_LINKS != 0 && !isRelativeLink(link) {
relAttrs = append(relAttrs, "noreferrer")
}
if len(relAttrs) > 0 {
out.WriteString(fmt.Sprintf("\" rel=\"%s", strings.Join(relAttrs, " ")))
}
// blank target only add to external link
if options.flags&HTML_HREF_TARGET_BLANK != 0 && !isRelativeLink(link) {
out.WriteString("\" target=\"_blank")
}
out.WriteString("\">")
out.Write(content)
out.WriteString("</a>")
return
}
func (options *Html) RawHtmlTag(out *bytes.Buffer, text []byte) {
if options.flags&HTML_SKIP_HTML != 0 {
return
}
if options.flags&HTML_SKIP_STYLE != 0 && isHtmlTag(text, "style") {
return
}
if options.flags&HTML_SKIP_LINKS != 0 && isHtmlTag(text, "a") {
return
}
if options.flags&HTML_SKIP_IMAGES != 0 && isHtmlTag(text, "img") {
return
}
out.Write(text)
}
func (options *Html) TripleEmphasis(out *bytes.Buffer, text []byte) {
out.WriteString("<strong><em>")
out.Write(text)
out.WriteString("</em></strong>")
}
func (options *Html) StrikeThrough(out *bytes.Buffer, text []byte) {
out.WriteString("<del>")
out.Write(text)
out.WriteString("</del>")
}
func (options *Html) FootnoteRef(out *bytes.Buffer, ref []byte, id int) {
slug := slugify(ref)
out.WriteString(`<sup class="footnote-ref" id="`)
out.WriteString(`fnref:`)
out.WriteString(options.parameters.FootnoteAnchorPrefix)
out.Write(slug)
out.WriteString(`"><a rel="footnote" href="#`)
out.WriteString(`fn:`)
out.WriteString(options.parameters.FootnoteAnchorPrefix)
out.Write(slug)
out.WriteString(`">`)
out.WriteString(strconv.Itoa(id))
out.WriteString(`</a></sup>`)
}
func (options *Html) Entity(out *bytes.Buffer, entity []byte) {
out.Write(entity)
}
func (options *Html) NormalText(out *bytes.Buffer, text []byte) {
if options.flags&HTML_USE_SMARTYPANTS != 0 {
options.Smartypants(out, text)
} else {
attrEscape(out, text)
}
}
func (options *Html) Smartypants(out *bytes.Buffer, text []byte) {
smrt := smartypantsData{false, false}
// first do normal entity escaping
var escaped bytes.Buffer
attrEscape(&escaped, text)
text = escaped.Bytes()
mark := 0
for i := 0; i < len(text); i++ {
if action := options.smartypants[text[i]]; action != nil {
if i > mark {
out.Write(text[mark:i])
}
previousChar := byte(0)
if i > 0 {
previousChar = text[i-1]
}
i += action(out, &smrt, previousChar, text[i:])
mark = i + 1
}
}
if mark < len(text) {
out.Write(text[mark:])
}
}
func (options *Html) DocumentHeader(out *bytes.Buffer) {
if options.flags&HTML_COMPLETE_PAGE == 0 {
return
}
ending := ""
if options.flags&HTML_USE_XHTML != 0 {
out.WriteString("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" ")
out.WriteString("\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n")
out.WriteString("<html xmlns=\"http://www.w3.org/1999/xhtml\">\n")
ending = " /"
} else {
out.WriteString("<!DOCTYPE html>\n")
out.WriteString("<html>\n")
}
out.WriteString("<head>\n")
out.WriteString(" <title>")
options.NormalText(out, []byte(options.title))
out.WriteString("</title>\n")
out.WriteString(" <meta name=\"GENERATOR\" content=\"Blackfriday Markdown Processor v")
out.WriteString(VERSION)
out.WriteString("\"")
out.WriteString(ending)
out.WriteString(">\n")
out.WriteString(" <meta charset=\"utf-8\"")
out.WriteString(ending)
out.WriteString(">\n")
if options.css != "" {
out.WriteString(" <link rel=\"stylesheet\" type=\"text/css\" href=\"")
attrEscape(out, []byte(options.css))
out.WriteString("\"")
out.WriteString(ending)
out.WriteString(">\n")
}
out.WriteString("</head>\n")
out.WriteString("<body>\n")
options.tocMarker = out.Len()
}
func (options *Html) DocumentFooter(out *bytes.Buffer) {
// finalize and insert the table of contents
if options.flags&HTML_TOC != 0 {
options.TocFinalize()
// now we have to insert the table of contents into the document
var temp bytes.Buffer
// start by making a copy of everything after the document header
temp.Write(out.Bytes()[options.tocMarker:])
// now clear the copied material from the main output buffer
out.Truncate(options.tocMarker)
// corner case spacing issue
if options.flags&HTML_COMPLETE_PAGE != 0 {
out.WriteByte('\n')
}
// insert the table of contents
out.WriteString("<nav>\n")
out.Write(options.toc.Bytes())
out.WriteString("</nav>\n")
// corner case spacing issue
if options.flags&HTML_COMPLETE_PAGE == 0 && options.flags&HTML_OMIT_CONTENTS == 0 {
out.WriteByte('\n')
}
// write out everything that came after it
if options.flags&HTML_OMIT_CONTENTS == 0 {
out.Write(temp.Bytes())
}
}
if options.flags&HTML_COMPLETE_PAGE != 0 {
out.WriteString("\n</body>\n")
out.WriteString("</html>\n")
}
}
func (options *Html) TocHeaderWithAnchor(text []byte, level int, anchor string) {
for level > options.currentLevel {
switch {
case bytes.HasSuffix(options.toc.Bytes(), []byte("</li>\n")):
// this sublist can nest underneath a header
size := options.toc.Len()
options.toc.Truncate(size - len("</li>\n"))
case options.currentLevel > 0:
options.toc.WriteString("<li>")
}
if options.toc.Len() > 0 {
options.toc.WriteByte('\n')
}
options.toc.WriteString("<ul>\n")
options.currentLevel++
}
for level < options.currentLevel {
options.toc.WriteString("</ul>")
if options.currentLevel > 1 {
options.toc.WriteString("</li>\n")
}
options.currentLevel--
}
options.toc.WriteString("<li><a href=\"#")
if anchor != "" {
options.toc.WriteString(anchor)
} else {
options.toc.WriteString("toc_")
options.toc.WriteString(strconv.Itoa(options.headerCount))
}
options.toc.WriteString("\">")
options.headerCount++
options.toc.Write(text)
options.toc.WriteString("</a></li>\n")
}
func (options *Html) TocHeader(text []byte, level int) {
options.TocHeaderWithAnchor(text, level, "")
}
func (options *Html) TocFinalize() {
for options.currentLevel > 1 {
options.toc.WriteString("</ul></li>\n")
options.currentLevel--
}
if options.currentLevel > 0 {
options.toc.WriteString("</ul>\n")
}
}
func isHtmlTag(tag []byte, tagname string) bool {
found, _ := findHtmlTagPos(tag, tagname)
return found
}
// Look for a character, but ignore it when it's in any kind of quotes, it
// might be JavaScript
func skipUntilCharIgnoreQuotes(html []byte, start int, char byte) int {
inSingleQuote := false
inDoubleQuote := false
inGraveQuote := false
i := start
for i < len(html) {
switch {
case html[i] == char && !inSingleQuote && !inDoubleQuote && !inGraveQuote:
return i
case html[i] == '\'':
inSingleQuote = !inSingleQuote
case html[i] == '"':
inDoubleQuote = !inDoubleQuote
case html[i] == '`':
inGraveQuote = !inGraveQuote
}
i++
}
return start
}
func findHtmlTagPos(tag []byte, tagname string) (bool, int) {
i := 0
if i < len(tag) && tag[0] != '<' {
return false, -1
}
i++
i = skipSpace(tag, i)
if i < len(tag) && tag[i] == '/' {
i++
}
i = skipSpace(tag, i)
j := 0
for ; i < len(tag); i, j = i+1, j+1 {
if j >= len(tagname) {
break
}
if strings.ToLower(string(tag[i]))[0] != tagname[j] {
return false, -1
}
}
if i == len(tag) {
return false, -1
}
rightAngle := skipUntilCharIgnoreQuotes(tag, i, '>')
if rightAngle > i {
return true, rightAngle
}
return false, -1
}
func skipUntilChar(text []byte, start int, char byte) int {
i := start
for i < len(text) && text[i] != char {
i++
}
return i
}
func skipSpace(tag []byte, i int) int {
for i < len(tag) && isspace(tag[i]) {
i++
}
return i
}
func skipChar(data []byte, start int, char byte) int {
i := start
for i < len(data) && data[i] == char {
i++
}
return i
}
func doubleSpace(out *bytes.Buffer) {
if out.Len() > 0 {
out.WriteByte('\n')
}
}
func isRelativeLink(link []byte) (yes bool) {
// a tag begin with '#'
if link[0] == '#' {
return true
}
// link begin with '/' but not '//', the second maybe a protocol relative link
if len(link) >= 2 && link[0] == '/' && link[1] != '/' {
return true
}
// only the root '/'
if len(link) == 1 && link[0] == '/' {
return true
}
// current directory : begin with "./"
if bytes.HasPrefix(link, []byte("./")) {
return true
}
// parent directory : begin with "../"
if bytes.HasPrefix(link, []byte("../")) {
return true
}
return false
}
func (options *Html) ensureUniqueHeaderID(id string) string {
for count, found := options.headerIDs[id]; found; count, found = options.headerIDs[id] {
tmp := fmt.Sprintf("%s-%d", id, count+1)
if _, tmpFound := options.headerIDs[tmp]; !tmpFound {
options.headerIDs[id] = count + 1
id = tmp
} else {
id = id + "-1"
}
}
if _, found := options.headerIDs[id]; !found {
options.headerIDs[id] = 0
}
return id
}

1154
vendor/github.com/russross/blackfriday/inline.go generated vendored 100644

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vendor/github.com/russross/blackfriday/latex.go generated vendored 100644
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//
// Blackfriday Markdown Processor
// Available at http://github.com/russross/blackfriday
//
// Copyright © 2011 Russ Ross <russ@russross.com>.
// Distributed under the Simplified BSD License.
// See README.md for details.
//
//
//
// LaTeX rendering backend
//
//
package blackfriday
import (
"bytes"
)
// Latex is a type that implements the Renderer interface for LaTeX output.
//
// Do not create this directly, instead use the LatexRenderer function.
type Latex struct {
}
// LatexRenderer creates and configures a Latex object, which
// satisfies the Renderer interface.
//
// flags is a set of LATEX_* options ORed together (currently no such options
// are defined).
func LatexRenderer(flags int) Renderer {
return &Latex{}
}
func (options *Latex) GetFlags() int {
return 0
}
// render code chunks using verbatim, or listings if we have a language
func (options *Latex) BlockCode(out *bytes.Buffer, text []byte, lang string) {
if lang == "" {
out.WriteString("\n\\begin{verbatim}\n")
} else {
out.WriteString("\n\\begin{lstlisting}[language=")
out.WriteString(lang)
out.WriteString("]\n")
}
out.Write(text)
if lang == "" {
out.WriteString("\n\\end{verbatim}\n")
} else {
out.WriteString("\n\\end{lstlisting}\n")
}
}
func (options *Latex) TitleBlock(out *bytes.Buffer, text []byte) {
}
func (options *Latex) BlockQuote(out *bytes.Buffer, text []byte) {
out.WriteString("\n\\begin{quotation}\n")
out.Write(text)
out.WriteString("\n\\end{quotation}\n")
}
func (options *Latex) BlockHtml(out *bytes.Buffer, text []byte) {
// a pretty lame thing to do...
out.WriteString("\n\\begin{verbatim}\n")
out.Write(text)
out.WriteString("\n\\end{verbatim}\n")
}
func (options *Latex) Header(out *bytes.Buffer, text func() bool, level int, id string) {
marker := out.Len()
switch level {
case 1:
out.WriteString("\n\\section{")
case 2:
out.WriteString("\n\\subsection{")
case 3:
out.WriteString("\n\\subsubsection{")
case 4:
out.WriteString("\n\\paragraph{")
case 5:
out.WriteString("\n\\subparagraph{")
case 6:
out.WriteString("\n\\textbf{")
}
if !text() {
out.Truncate(marker)
return
}
out.WriteString("}\n")
}
func (options *Latex) HRule(out *bytes.Buffer) {
out.WriteString("\n\\HRule\n")
}
func (options *Latex) List(out *bytes.Buffer, text func() bool, flags int) {
marker := out.Len()
if flags&LIST_TYPE_ORDERED != 0 {
out.WriteString("\n\\begin{enumerate}\n")
} else {
out.WriteString("\n\\begin{itemize}\n")
}
if !text() {
out.Truncate(marker)
return
}
if flags&LIST_TYPE_ORDERED != 0 {
out.WriteString("\n\\end{enumerate}\n")
} else {
out.WriteString("\n\\end{itemize}\n")
}
}
func (options *Latex) ListItem(out *bytes.Buffer, text []byte, flags int) {
out.WriteString("\n\\item ")
out.Write(text)
}
func (options *Latex) Paragraph(out *bytes.Buffer, text func() bool) {
marker := out.Len()
out.WriteString("\n")
if !text() {
out.Truncate(marker)
return
}
out.WriteString("\n")
}
func (options *Latex) Table(out *bytes.Buffer, header []byte, body []byte, columnData []int) {
out.WriteString("\n\\begin{tabular}{")
for _, elt := range columnData {
switch elt {
case TABLE_ALIGNMENT_LEFT:
out.WriteByte('l')
case TABLE_ALIGNMENT_RIGHT:
out.WriteByte('r')
default:
out.WriteByte('c')
}
}
out.WriteString("}\n")
out.Write(header)
out.WriteString(" \\\\\n\\hline\n")
out.Write(body)
out.WriteString("\n\\end{tabular}\n")
}
func (options *Latex) TableRow(out *bytes.Buffer, text []byte) {
if out.Len() > 0 {
out.WriteString(" \\\\\n")
}
out.Write(text)
}
func (options *Latex) TableHeaderCell(out *bytes.Buffer, text []byte, align int) {
if out.Len() > 0 {
out.WriteString(" & ")
}
out.Write(text)
}
func (options *Latex) TableCell(out *bytes.Buffer, text []byte, align int) {
if out.Len() > 0 {
out.WriteString(" & ")
}
out.Write(text)
}
// TODO: this
func (options *Latex) Footnotes(out *bytes.Buffer, text func() bool) {
}
func (options *Latex) FootnoteItem(out *bytes.Buffer, name, text []byte, flags int) {
}
func (options *Latex) AutoLink(out *bytes.Buffer, link []byte, kind int) {
out.WriteString("\\href{")
if kind == LINK_TYPE_EMAIL {
out.WriteString("mailto:")
}
out.Write(link)
out.WriteString("}{")
out.Write(link)
out.WriteString("}")
}
func (options *Latex) CodeSpan(out *bytes.Buffer, text []byte) {
out.WriteString("\\texttt{")
escapeSpecialChars(out, text)
out.WriteString("}")
}
func (options *Latex) DoubleEmphasis(out *bytes.Buffer, text []byte) {
out.WriteString("\\textbf{")
out.Write(text)
out.WriteString("}")
}
func (options *Latex) Emphasis(out *bytes.Buffer, text []byte) {
out.WriteString("\\textit{")
out.Write(text)
out.WriteString("}")
}
func (options *Latex) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte) {
if bytes.HasPrefix(link, []byte("http://")) || bytes.HasPrefix(link, []byte("https://")) {
// treat it like a link
out.WriteString("\\href{")
out.Write(link)
out.WriteString("}{")
out.Write(alt)
out.WriteString("}")
} else {
out.WriteString("\\includegraphics{")
out.Write(link)
out.WriteString("}")
}
}
func (options *Latex) LineBreak(out *bytes.Buffer) {
out.WriteString(" \\\\\n")
}
func (options *Latex) Link(out *bytes.Buffer, link []byte, title []byte, content []byte) {
out.WriteString("\\href{")
out.Write(link)
out.WriteString("}{")
out.Write(content)
out.WriteString("}")
}
func (options *Latex) RawHtmlTag(out *bytes.Buffer, tag []byte) {
}
func (options *Latex) TripleEmphasis(out *bytes.Buffer, text []byte) {
out.WriteString("\\textbf{\\textit{")
out.Write(text)
out.WriteString("}}")
}
func (options *Latex) StrikeThrough(out *bytes.Buffer, text []byte) {
out.WriteString("\\sout{")
out.Write(text)
out.WriteString("}")
}
// TODO: this
func (options *Latex) FootnoteRef(out *bytes.Buffer, ref []byte, id int) {
}
func needsBackslash(c byte) bool {
for _, r := range []byte("_{}%$&\\~#") {
if c == r {
return true
}
}
return false
}
func escapeSpecialChars(out *bytes.Buffer, text []byte) {
for i := 0; i < len(text); i++ {
// directly copy normal characters
org := i
for i < len(text) && !needsBackslash(text[i]) {
i++
}
if i > org {
out.Write(text[org:i])
}
// escape a character
if i >= len(text) {
break
}
out.WriteByte('\\')
out.WriteByte(text[i])
}
}
func (options *Latex) Entity(out *bytes.Buffer, entity []byte) {
// TODO: convert this into a unicode character or something
out.Write(entity)
}
func (options *Latex) NormalText(out *bytes.Buffer, text []byte) {
escapeSpecialChars(out, text)
}
// header and footer
func (options *Latex) DocumentHeader(out *bytes.Buffer) {
out.WriteString("\\documentclass{article}\n")
out.WriteString("\n")
out.WriteString("\\usepackage{graphicx}\n")
out.WriteString("\\usepackage{listings}\n")
out.WriteString("\\usepackage[margin=1in]{geometry}\n")
out.WriteString("\\usepackage[utf8]{inputenc}\n")
out.WriteString("\\usepackage{verbatim}\n")
out.WriteString("\\usepackage[normalem]{ulem}\n")
out.WriteString("\\usepackage{hyperref}\n")
out.WriteString("\n")
out.WriteString("\\hypersetup{colorlinks,%\n")
out.WriteString(" citecolor=black,%\n")
out.WriteString(" filecolor=black,%\n")
out.WriteString(" linkcolor=black,%\n")
out.WriteString(" urlcolor=black,%\n")
out.WriteString(" pdfstartview=FitH,%\n")
out.WriteString(" breaklinks=true,%\n")
out.WriteString(" pdfauthor={Blackfriday Markdown Processor v")
out.WriteString(VERSION)
out.WriteString("}}\n")
out.WriteString("\n")
out.WriteString("\\newcommand{\\HRule}{\\rule{\\linewidth}{0.5mm}}\n")
out.WriteString("\\addtolength{\\parskip}{0.5\\baselineskip}\n")
out.WriteString("\\parindent=0pt\n")
out.WriteString("\n")
out.WriteString("\\begin{document}\n")
}
func (options *Latex) DocumentFooter(out *bytes.Buffer) {
out.WriteString("\n\\end{document}\n")
}

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@ -0,0 +1,931 @@
//
// Blackfriday Markdown Processor
// Available at http://github.com/russross/blackfriday
//
// Copyright © 2011 Russ Ross <russ@russross.com>.
// Distributed under the Simplified BSD License.
// See README.md for details.
//
//
//
// Markdown parsing and processing
//
//
package blackfriday
import (
"bytes"
"fmt"
"strings"
"unicode/utf8"
)
const VERSION = "1.5"
// These are the supported markdown parsing extensions.
// OR these values together to select multiple extensions.
const (
EXTENSION_NO_INTRA_EMPHASIS = 1 << iota // ignore emphasis markers inside words
EXTENSION_TABLES // render tables
EXTENSION_FENCED_CODE // render fenced code blocks
EXTENSION_AUTOLINK // detect embedded URLs that are not explicitly marked
EXTENSION_STRIKETHROUGH // strikethrough text using ~~test~~
EXTENSION_LAX_HTML_BLOCKS // loosen up HTML block parsing rules
EXTENSION_SPACE_HEADERS // be strict about prefix header rules
EXTENSION_HARD_LINE_BREAK // translate newlines into line breaks
EXTENSION_TAB_SIZE_EIGHT // expand tabs to eight spaces instead of four
EXTENSION_FOOTNOTES // Pandoc-style footnotes
EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK // No need to insert an empty line to start a (code, quote, ordered list, unordered list) block
EXTENSION_HEADER_IDS // specify header IDs with {#id}
EXTENSION_TITLEBLOCK // Titleblock ala pandoc
EXTENSION_AUTO_HEADER_IDS // Create the header ID from the text
EXTENSION_BACKSLASH_LINE_BREAK // translate trailing backslashes into line breaks
EXTENSION_DEFINITION_LISTS // render definition lists
EXTENSION_JOIN_LINES // delete newline and join lines
commonHtmlFlags = 0 |
HTML_USE_XHTML |
HTML_USE_SMARTYPANTS |
HTML_SMARTYPANTS_FRACTIONS |
HTML_SMARTYPANTS_DASHES |
HTML_SMARTYPANTS_LATEX_DASHES
commonExtensions = 0 |
EXTENSION_NO_INTRA_EMPHASIS |
EXTENSION_TABLES |
EXTENSION_FENCED_CODE |
EXTENSION_AUTOLINK |
EXTENSION_STRIKETHROUGH |
EXTENSION_SPACE_HEADERS |
EXTENSION_HEADER_IDS |
EXTENSION_BACKSLASH_LINE_BREAK |
EXTENSION_DEFINITION_LISTS
)
// These are the possible flag values for the link renderer.
// Only a single one of these values will be used; they are not ORed together.
// These are mostly of interest if you are writing a new output format.
const (
LINK_TYPE_NOT_AUTOLINK = iota
LINK_TYPE_NORMAL
LINK_TYPE_EMAIL
)
// These are the possible flag values for the ListItem renderer.
// Multiple flag values may be ORed together.
// These are mostly of interest if you are writing a new output format.
const (
LIST_TYPE_ORDERED = 1 << iota
LIST_TYPE_DEFINITION
LIST_TYPE_TERM
LIST_ITEM_CONTAINS_BLOCK
LIST_ITEM_BEGINNING_OF_LIST
LIST_ITEM_END_OF_LIST
)
// These are the possible flag values for the table cell renderer.
// Only a single one of these values will be used; they are not ORed together.
// These are mostly of interest if you are writing a new output format.
const (
TABLE_ALIGNMENT_LEFT = 1 << iota
TABLE_ALIGNMENT_RIGHT
TABLE_ALIGNMENT_CENTER = (TABLE_ALIGNMENT_LEFT | TABLE_ALIGNMENT_RIGHT)
)
// The size of a tab stop.
const (
TAB_SIZE_DEFAULT = 4
TAB_SIZE_EIGHT = 8
)
// blockTags is a set of tags that are recognized as HTML block tags.
// Any of these can be included in markdown text without special escaping.
var blockTags = map[string]struct{}{
"blockquote": {},
"del": {},
"div": {},
"dl": {},
"fieldset": {},
"form": {},
"h1": {},
"h2": {},
"h3": {},
"h4": {},
"h5": {},
"h6": {},
"iframe": {},
"ins": {},
"math": {},
"noscript": {},
"ol": {},
"pre": {},
"p": {},
"script": {},
"style": {},
"table": {},
"ul": {},
// HTML5
"address": {},
"article": {},
"aside": {},
"canvas": {},
"figcaption": {},
"figure": {},
"footer": {},
"header": {},
"hgroup": {},
"main": {},
"nav": {},
"output": {},
"progress": {},
"section": {},
"video": {},
}
// Renderer is the rendering interface.
// This is mostly of interest if you are implementing a new rendering format.
//
// When a byte slice is provided, it contains the (rendered) contents of the
// element.
//
// When a callback is provided instead, it will write the contents of the
// respective element directly to the output buffer and return true on success.
// If the callback returns false, the rendering function should reset the
// output buffer as though it had never been called.
//
// Currently Html and Latex implementations are provided
type Renderer interface {
// block-level callbacks
BlockCode(out *bytes.Buffer, text []byte, lang string)
BlockQuote(out *bytes.Buffer, text []byte)
BlockHtml(out *bytes.Buffer, text []byte)
Header(out *bytes.Buffer, text func() bool, level int, id string)
HRule(out *bytes.Buffer)
List(out *bytes.Buffer, text func() bool, flags int)
ListItem(out *bytes.Buffer, text []byte, flags int)
Paragraph(out *bytes.Buffer, text func() bool)
Table(out *bytes.Buffer, header []byte, body []byte, columnData []int)
TableRow(out *bytes.Buffer, text []byte)
TableHeaderCell(out *bytes.Buffer, text []byte, flags int)
TableCell(out *bytes.Buffer, text []byte, flags int)
Footnotes(out *bytes.Buffer, text func() bool)
FootnoteItem(out *bytes.Buffer, name, text []byte, flags int)
TitleBlock(out *bytes.Buffer, text []byte)
// Span-level callbacks
AutoLink(out *bytes.Buffer, link []byte, kind int)
CodeSpan(out *bytes.Buffer, text []byte)
DoubleEmphasis(out *bytes.Buffer, text []byte)
Emphasis(out *bytes.Buffer, text []byte)
Image(out *bytes.Buffer, link []byte, title []byte, alt []byte)
LineBreak(out *bytes.Buffer)
Link(out *bytes.Buffer, link []byte, title []byte, content []byte)
RawHtmlTag(out *bytes.Buffer, tag []byte)
TripleEmphasis(out *bytes.Buffer, text []byte)
StrikeThrough(out *bytes.Buffer, text []byte)
FootnoteRef(out *bytes.Buffer, ref []byte, id int)
// Low-level callbacks
Entity(out *bytes.Buffer, entity []byte)
NormalText(out *bytes.Buffer, text []byte)
// Header and footer
DocumentHeader(out *bytes.Buffer)
DocumentFooter(out *bytes.Buffer)
GetFlags() int
}
// Callback functions for inline parsing. One such function is defined
// for each character that triggers a response when parsing inline data.
type inlineParser func(p *parser, out *bytes.Buffer, data []byte, offset int) int
// Parser holds runtime state used by the parser.
// This is constructed by the Markdown function.
type parser struct {
r Renderer
refOverride ReferenceOverrideFunc
refs map[string]*reference
inlineCallback [256]inlineParser
flags int
nesting int
maxNesting int
insideLink bool
// Footnotes need to be ordered as well as available to quickly check for
// presence. If a ref is also a footnote, it's stored both in refs and here
// in notes. Slice is nil if footnotes not enabled.
notes []*reference
notesRecord map[string]struct{}
}
func (p *parser) getRef(refid string) (ref *reference, found bool) {
if p.refOverride != nil {
r, overridden := p.refOverride(refid)
if overridden {
if r == nil {
return nil, false
}
return &reference{
link: []byte(r.Link),
title: []byte(r.Title),
noteId: 0,
hasBlock: false,
text: []byte(r.Text)}, true
}
}
// refs are case insensitive
ref, found = p.refs[strings.ToLower(refid)]
return ref, found
}
func (p *parser) isFootnote(ref *reference) bool {
_, ok := p.notesRecord[string(ref.link)]
return ok
}
//
//
// Public interface
//
//
// Reference represents the details of a link.
// See the documentation in Options for more details on use-case.
type Reference struct {
// Link is usually the URL the reference points to.
Link string
// Title is the alternate text describing the link in more detail.
Title string
// Text is the optional text to override the ref with if the syntax used was
// [refid][]
Text string
}
// ReferenceOverrideFunc is expected to be called with a reference string and
// return either a valid Reference type that the reference string maps to or
// nil. If overridden is false, the default reference logic will be executed.
// See the documentation in Options for more details on use-case.
type ReferenceOverrideFunc func(reference string) (ref *Reference, overridden bool)
// Options represents configurable overrides and callbacks (in addition to the
// extension flag set) for configuring a Markdown parse.
type Options struct {
// Extensions is a flag set of bit-wise ORed extension bits. See the
// EXTENSION_* flags defined in this package.
Extensions int
// ReferenceOverride is an optional function callback that is called every
// time a reference is resolved.
//
// In Markdown, the link reference syntax can be made to resolve a link to
// a reference instead of an inline URL, in one of the following ways:
//
// * [link text][refid]
// * [refid][]
//
// Usually, the refid is defined at the bottom of the Markdown document. If
// this override function is provided, the refid is passed to the override
// function first, before consulting the defined refids at the bottom. If
// the override function indicates an override did not occur, the refids at
// the bottom will be used to fill in the link details.
ReferenceOverride ReferenceOverrideFunc
}
// MarkdownBasic is a convenience function for simple rendering.
// It processes markdown input with no extensions enabled.
func MarkdownBasic(input []byte) []byte {
// set up the HTML renderer
htmlFlags := HTML_USE_XHTML
renderer := HtmlRenderer(htmlFlags, "", "")
// set up the parser
return MarkdownOptions(input, renderer, Options{Extensions: 0})
}
// Call Markdown with most useful extensions enabled
// MarkdownCommon is a convenience function for simple rendering.
// It processes markdown input with common extensions enabled, including:
//
// * Smartypants processing with smart fractions and LaTeX dashes
//
// * Intra-word emphasis suppression
//
// * Tables
//
// * Fenced code blocks
//
// * Autolinking
//
// * Strikethrough support
//
// * Strict header parsing
//
// * Custom Header IDs
func MarkdownCommon(input []byte) []byte {
// set up the HTML renderer
renderer := HtmlRenderer(commonHtmlFlags, "", "")
return MarkdownOptions(input, renderer, Options{
Extensions: commonExtensions})
}
// Markdown is the main rendering function.
// It parses and renders a block of markdown-encoded text.
// The supplied Renderer is used to format the output, and extensions dictates
// which non-standard extensions are enabled.
//
// To use the supplied Html or LaTeX renderers, see HtmlRenderer and
// LatexRenderer, respectively.
func Markdown(input []byte, renderer Renderer, extensions int) []byte {
return MarkdownOptions(input, renderer, Options{
Extensions: extensions})
}
// MarkdownOptions is just like Markdown but takes additional options through
// the Options struct.
func MarkdownOptions(input []byte, renderer Renderer, opts Options) []byte {
// no point in parsing if we can't render
if renderer == nil {
return nil
}
extensions := opts.Extensions
// fill in the render structure
p := new(parser)
p.r = renderer
p.flags = extensions
p.refOverride = opts.ReferenceOverride
p.refs = make(map[string]*reference)
p.maxNesting = 16
p.insideLink = false
// register inline parsers
p.inlineCallback['*'] = emphasis
p.inlineCallback['_'] = emphasis
if extensions&EXTENSION_STRIKETHROUGH != 0 {
p.inlineCallback['~'] = emphasis
}
p.inlineCallback['`'] = codeSpan
p.inlineCallback['\n'] = lineBreak
p.inlineCallback['['] = link
p.inlineCallback['<'] = leftAngle
p.inlineCallback['\\'] = escape
p.inlineCallback['&'] = entity
if extensions&EXTENSION_AUTOLINK != 0 {
p.inlineCallback[':'] = autoLink
}
if extensions&EXTENSION_FOOTNOTES != 0 {
p.notes = make([]*reference, 0)
p.notesRecord = make(map[string]struct{})
}
first := firstPass(p, input)
second := secondPass(p, first)
return second
}
// first pass:
// - normalize newlines
// - extract references (outside of fenced code blocks)
// - expand tabs (outside of fenced code blocks)
// - copy everything else
func firstPass(p *parser, input []byte) []byte {
var out bytes.Buffer
tabSize := TAB_SIZE_DEFAULT
if p.flags&EXTENSION_TAB_SIZE_EIGHT != 0 {
tabSize = TAB_SIZE_EIGHT
}
beg := 0
lastFencedCodeBlockEnd := 0
for beg < len(input) {
// Find end of this line, then process the line.
end := beg
for end < len(input) && input[end] != '\n' && input[end] != '\r' {
end++
}
if p.flags&EXTENSION_FENCED_CODE != 0 {
// track fenced code block boundaries to suppress tab expansion
// and reference extraction inside them:
if beg >= lastFencedCodeBlockEnd {
if i := p.fencedCodeBlock(&out, input[beg:], false); i > 0 {
lastFencedCodeBlockEnd = beg + i
}
}
}
// add the line body if present
if end > beg {
if end < lastFencedCodeBlockEnd { // Do not expand tabs while inside fenced code blocks.
out.Write(input[beg:end])
} else if refEnd := isReference(p, input[beg:], tabSize); refEnd > 0 {
beg += refEnd
continue
} else {
expandTabs(&out, input[beg:end], tabSize)
}
}
if end < len(input) && input[end] == '\r' {
end++
}
if end < len(input) && input[end] == '\n' {
end++
}
out.WriteByte('\n')
beg = end
}
// empty input?
if out.Len() == 0 {
out.WriteByte('\n')
}
return out.Bytes()
}
// second pass: actual rendering
func secondPass(p *parser, input []byte) []byte {
var output bytes.Buffer
p.r.DocumentHeader(&output)
p.block(&output, input)
if p.flags&EXTENSION_FOOTNOTES != 0 && len(p.notes) > 0 {
p.r.Footnotes(&output, func() bool {
flags := LIST_ITEM_BEGINNING_OF_LIST
for i := 0; i < len(p.notes); i += 1 {
ref := p.notes[i]
var buf bytes.Buffer
if ref.hasBlock {
flags |= LIST_ITEM_CONTAINS_BLOCK
p.block(&buf, ref.title)
} else {
p.inline(&buf, ref.title)
}
p.r.FootnoteItem(&output, ref.link, buf.Bytes(), flags)
flags &^= LIST_ITEM_BEGINNING_OF_LIST | LIST_ITEM_CONTAINS_BLOCK
}
return true
})
}
p.r.DocumentFooter(&output)
if p.nesting != 0 {
panic("Nesting level did not end at zero")
}
return output.Bytes()
}
//
// Link references
//
// This section implements support for references that (usually) appear
// as footnotes in a document, and can be referenced anywhere in the document.
// The basic format is:
//
// [1]: http://www.google.com/ "Google"
// [2]: http://www.github.com/ "Github"
//
// Anywhere in the document, the reference can be linked by referring to its
// label, i.e., 1 and 2 in this example, as in:
//
// This library is hosted on [Github][2], a git hosting site.
//
// Actual footnotes as specified in Pandoc and supported by some other Markdown
// libraries such as php-markdown are also taken care of. They look like this:
//
// This sentence needs a bit of further explanation.[^note]
//
// [^note]: This is the explanation.
//
// Footnotes should be placed at the end of the document in an ordered list.
// Inline footnotes such as:
//
// Inline footnotes^[Not supported.] also exist.
//
// are not yet supported.
// References are parsed and stored in this struct.
type reference struct {
link []byte
title []byte
noteId int // 0 if not a footnote ref
hasBlock bool
text []byte
}
func (r *reference) String() string {
return fmt.Sprintf("{link: %q, title: %q, text: %q, noteId: %d, hasBlock: %v}",
r.link, r.title, r.text, r.noteId, r.hasBlock)
}
// Check whether or not data starts with a reference link.
// If so, it is parsed and stored in the list of references
// (in the render struct).
// Returns the number of bytes to skip to move past it,
// or zero if the first line is not a reference.
func isReference(p *parser, data []byte, tabSize int) int {
// up to 3 optional leading spaces
if len(data) < 4 {
return 0
}
i := 0
for i < 3 && data[i] == ' ' {
i++
}
noteId := 0
// id part: anything but a newline between brackets
if data[i] != '[' {
return 0
}
i++
if p.flags&EXTENSION_FOOTNOTES != 0 {
if i < len(data) && data[i] == '^' {
// we can set it to anything here because the proper noteIds will
// be assigned later during the second pass. It just has to be != 0
noteId = 1
i++
}
}
idOffset := i
for i < len(data) && data[i] != '\n' && data[i] != '\r' && data[i] != ']' {
i++
}
if i >= len(data) || data[i] != ']' {
return 0
}
idEnd := i
// spacer: colon (space | tab)* newline? (space | tab)*
i++
if i >= len(data) || data[i] != ':' {
return 0
}
i++
for i < len(data) && (data[i] == ' ' || data[i] == '\t') {
i++
}
if i < len(data) && (data[i] == '\n' || data[i] == '\r') {
i++
if i < len(data) && data[i] == '\n' && data[i-1] == '\r' {
i++
}
}
for i < len(data) && (data[i] == ' ' || data[i] == '\t') {
i++
}
if i >= len(data) {
return 0
}
var (
linkOffset, linkEnd int
titleOffset, titleEnd int
lineEnd int
raw []byte
hasBlock bool
)
if p.flags&EXTENSION_FOOTNOTES != 0 && noteId != 0 {
linkOffset, linkEnd, raw, hasBlock = scanFootnote(p, data, i, tabSize)
lineEnd = linkEnd
} else {
linkOffset, linkEnd, titleOffset, titleEnd, lineEnd = scanLinkRef(p, data, i)
}
if lineEnd == 0 {
return 0
}
// a valid ref has been found
ref := &reference{
noteId: noteId,
hasBlock: hasBlock,
}
if noteId > 0 {
// reusing the link field for the id since footnotes don't have links
ref.link = data[idOffset:idEnd]
// if footnote, it's not really a title, it's the contained text
ref.title = raw
} else {
ref.link = data[linkOffset:linkEnd]
ref.title = data[titleOffset:titleEnd]
}
// id matches are case-insensitive
id := string(bytes.ToLower(data[idOffset:idEnd]))
p.refs[id] = ref
return lineEnd
}
func scanLinkRef(p *parser, data []byte, i int) (linkOffset, linkEnd, titleOffset, titleEnd, lineEnd int) {
// link: whitespace-free sequence, optionally between angle brackets
if data[i] == '<' {
i++
}
linkOffset = i
if i == len(data) {
return
}
for i < len(data) && data[i] != ' ' && data[i] != '\t' && data[i] != '\n' && data[i] != '\r' {
i++
}
linkEnd = i
if data[linkOffset] == '<' && data[linkEnd-1] == '>' {
linkOffset++
linkEnd--
}
// optional spacer: (space | tab)* (newline | '\'' | '"' | '(' )
for i < len(data) && (data[i] == ' ' || data[i] == '\t') {
i++
}
if i < len(data) && data[i] != '\n' && data[i] != '\r' && data[i] != '\'' && data[i] != '"' && data[i] != '(' {
return
}
// compute end-of-line
if i >= len(data) || data[i] == '\r' || data[i] == '\n' {
lineEnd = i
}
if i+1 < len(data) && data[i] == '\r' && data[i+1] == '\n' {
lineEnd++
}
// optional (space|tab)* spacer after a newline
if lineEnd > 0 {
i = lineEnd + 1
for i < len(data) && (data[i] == ' ' || data[i] == '\t') {
i++
}
}
// optional title: any non-newline sequence enclosed in '"() alone on its line
if i+1 < len(data) && (data[i] == '\'' || data[i] == '"' || data[i] == '(') {
i++
titleOffset = i
// look for EOL
for i < len(data) && data[i] != '\n' && data[i] != '\r' {
i++
}
if i+1 < len(data) && data[i] == '\n' && data[i+1] == '\r' {
titleEnd = i + 1
} else {
titleEnd = i
}
// step back
i--
for i > titleOffset && (data[i] == ' ' || data[i] == '\t') {
i--
}
if i > titleOffset && (data[i] == '\'' || data[i] == '"' || data[i] == ')') {
lineEnd = titleEnd
titleEnd = i
}
}
return
}
// The first bit of this logic is the same as (*parser).listItem, but the rest
// is much simpler. This function simply finds the entire block and shifts it
// over by one tab if it is indeed a block (just returns the line if it's not).
// blockEnd is the end of the section in the input buffer, and contents is the
// extracted text that was shifted over one tab. It will need to be rendered at
// the end of the document.
func scanFootnote(p *parser, data []byte, i, indentSize int) (blockStart, blockEnd int, contents []byte, hasBlock bool) {
if i == 0 || len(data) == 0 {
return
}
// skip leading whitespace on first line
for i < len(data) && data[i] == ' ' {
i++
}
blockStart = i
// find the end of the line
blockEnd = i
for i < len(data) && data[i-1] != '\n' {
i++
}
// get working buffer
var raw bytes.Buffer
// put the first line into the working buffer
raw.Write(data[blockEnd:i])
blockEnd = i
// process the following lines
containsBlankLine := false
gatherLines:
for blockEnd < len(data) {
i++
// find the end of this line
for i < len(data) && data[i-1] != '\n' {
i++
}
// if it is an empty line, guess that it is part of this item
// and move on to the next line
if p.isEmpty(data[blockEnd:i]) > 0 {
containsBlankLine = true
blockEnd = i
continue
}
n := 0
if n = isIndented(data[blockEnd:i], indentSize); n == 0 {
// this is the end of the block.
// we don't want to include this last line in the index.
break gatherLines
}
// if there were blank lines before this one, insert a new one now
if containsBlankLine {
raw.WriteByte('\n')
containsBlankLine = false
}
// get rid of that first tab, write to buffer
raw.Write(data[blockEnd+n : i])
hasBlock = true
blockEnd = i
}
if data[blockEnd-1] != '\n' {
raw.WriteByte('\n')
}
contents = raw.Bytes()
return
}
//
//
// Miscellaneous helper functions
//
//
// Test if a character is a punctuation symbol.
// Taken from a private function in regexp in the stdlib.
func ispunct(c byte) bool {
for _, r := range []byte("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~") {
if c == r {
return true
}
}
return false
}
// Test if a character is a whitespace character.
func isspace(c byte) bool {
return c == ' ' || c == '\t' || c == '\n' || c == '\r' || c == '\f' || c == '\v'
}
// Test if a character is letter.
func isletter(c byte) bool {
return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
}
// Test if a character is a letter or a digit.
// TODO: check when this is looking for ASCII alnum and when it should use unicode
func isalnum(c byte) bool {
return (c >= '0' && c <= '9') || isletter(c)
}
// Replace tab characters with spaces, aligning to the next TAB_SIZE column.
// always ends output with a newline
func expandTabs(out *bytes.Buffer, line []byte, tabSize int) {
// first, check for common cases: no tabs, or only tabs at beginning of line
i, prefix := 0, 0
slowcase := false
for i = 0; i < len(line); i++ {
if line[i] == '\t' {
if prefix == i {
prefix++
} else {
slowcase = true
break
}
}
}
// no need to decode runes if all tabs are at the beginning of the line
if !slowcase {
for i = 0; i < prefix*tabSize; i++ {
out.WriteByte(' ')
}
out.Write(line[prefix:])
return
}
// the slow case: we need to count runes to figure out how
// many spaces to insert for each tab
column := 0
i = 0
for i < len(line) {
start := i
for i < len(line) && line[i] != '\t' {
_, size := utf8.DecodeRune(line[i:])
i += size
column++
}
if i > start {
out.Write(line[start:i])
}
if i >= len(line) {
break
}
for {
out.WriteByte(' ')
column++
if column%tabSize == 0 {
break
}
}
i++
}
}
// Find if a line counts as indented or not.
// Returns number of characters the indent is (0 = not indented).
func isIndented(data []byte, indentSize int) int {
if len(data) == 0 {
return 0
}
if data[0] == '\t' {
return 1
}
if len(data) < indentSize {
return 0
}
for i := 0; i < indentSize; i++ {
if data[i] != ' ' {
return 0
}
}
return indentSize
}
// Create a url-safe slug for fragments
func slugify(in []byte) []byte {
if len(in) == 0 {
return in
}
out := make([]byte, 0, len(in))
sym := false
for _, ch := range in {
if isalnum(ch) {
sym = false
out = append(out, ch)
} else if sym {
continue
} else {
out = append(out, '-')
sym = true
}
}
var a, b int
var ch byte
for a, ch = range out {
if ch != '-' {
break
}
}
for b = len(out) - 1; b > 0; b-- {
if out[b] != '-' {
break
}
}
return out[a : b+1]
}

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//
// Blackfriday Markdown Processor
// Available at http://github.com/russross/blackfriday
//
// Copyright © 2011 Russ Ross <russ@russross.com>.
// Distributed under the Simplified BSD License.
// See README.md for details.
//
//
// Unit tests for full document parsing and rendering
//
package blackfriday
import (
"testing"
)
func runMarkdown(input string) string {
return string(MarkdownCommon([]byte(input)))
}
func doTests(t *testing.T, tests []string) {
// catch and report panics
var candidate string
defer func() {
if err := recover(); err != nil {
t.Errorf("\npanic while processing [%#v]: %s\n", candidate, err)
}
}()
for i := 0; i+1 < len(tests); i += 2 {
input := tests[i]
candidate = input
expected := tests[i+1]
actual := runMarkdown(candidate)
if actual != expected {
t.Errorf("\nInput [%#v]\nExpected[%#v]\nActual [%#v]",
candidate, expected, actual)
}
// now test every substring to stress test bounds checking
if !testing.Short() {
for start := 0; start < len(input); start++ {
for end := start + 1; end <= len(input); end++ {
candidate = input[start:end]
_ = runMarkdown(candidate)
}
}
}
}
}
func TestDocument(t *testing.T) {
var tests = []string{
// Empty document.
"",
"",
" ",
"",
// This shouldn't panic.
// https://github.com/russross/blackfriday/issues/172
"[]:<",
"<p>[]:&lt;</p>\n",
// This shouldn't panic.
// https://github.com/russross/blackfriday/issues/173
" [",
"<p>[</p>\n",
}
doTests(t, tests)
}

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//
// Blackfriday Markdown Processor
// Available at http://github.com/russross/blackfriday
//
// Copyright © 2011 Russ Ross <russ@russross.com>.
// Distributed under the Simplified BSD License.
// See README.md for details.
//
//
// Markdown 1.0.3 reference tests
//
package blackfriday
import (
"io/ioutil"
"path/filepath"
"testing"
)
func runMarkdownReference(input string, flag int) string {
renderer := HtmlRenderer(0, "", "")
return string(Markdown([]byte(input), renderer, flag))
}
func doTestsReference(t *testing.T, files []string, flag int) {
// catch and report panics
var candidate string
defer func() {
if err := recover(); err != nil {
t.Errorf("\npanic while processing [%#v]: %s\n", candidate, err)
}
}()
for _, basename := range files {
filename := filepath.Join("testdata", basename+".text")
inputBytes, err := ioutil.ReadFile(filename)
if err != nil {
t.Errorf("Couldn't open '%s', error: %v\n", filename, err)
continue
}
input := string(inputBytes)
filename = filepath.Join("testdata", basename+".html")
expectedBytes, err := ioutil.ReadFile(filename)
if err != nil {
t.Errorf("Couldn't open '%s', error: %v\n", filename, err)
continue
}
expected := string(expectedBytes)
// fmt.Fprintf(os.Stderr, "processing %s ...", filename)
actual := string(runMarkdownReference(input, flag))
if actual != expected {
t.Errorf("\n [%#v]\nExpected[%#v]\nActual [%#v]",
basename+".text", expected, actual)
}
// fmt.Fprintf(os.Stderr, " ok\n")
// now test every prefix of every input to check for
// bounds checking
if !testing.Short() {
start, max := 0, len(input)
for end := start + 1; end <= max; end++ {
candidate = input[start:end]
// fmt.Fprintf(os.Stderr, " %s %d:%d/%d\n", filename, start, end, max)
_ = runMarkdownReference(candidate, flag)
}
}
}
}
func TestReference(t *testing.T) {
files := []string{
"Amps and angle encoding",
"Auto links",
"Backslash escapes",
"Blockquotes with code blocks",
"Code Blocks",
"Code Spans",
"Hard-wrapped paragraphs with list-like lines",
"Horizontal rules",
"Inline HTML (Advanced)",
"Inline HTML (Simple)",
"Inline HTML comments",
"Links, inline style",
"Links, reference style",
"Links, shortcut references",
"Literal quotes in titles",
"Markdown Documentation - Basics",
"Markdown Documentation - Syntax",
"Nested blockquotes",
"Ordered and unordered lists",
"Strong and em together",
"Tabs",
"Tidyness",
}
doTestsReference(t, files, 0)
}
func TestReference_EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK(t *testing.T) {
files := []string{
"Amps and angle encoding",
"Auto links",
"Backslash escapes",
"Blockquotes with code blocks",
"Code Blocks",
"Code Spans",
"Hard-wrapped paragraphs with list-like lines no empty line before block",
"Horizontal rules",
"Inline HTML (Advanced)",
"Inline HTML (Simple)",
"Inline HTML comments",
"Links, inline style",
"Links, reference style",
"Links, shortcut references",
"Literal quotes in titles",
"Markdown Documentation - Basics",
"Markdown Documentation - Syntax",
"Nested blockquotes",
"Ordered and unordered lists",
"Strong and em together",
"Tabs",
"Tidyness",
}
doTestsReference(t, files, EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK)
}

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//
// Blackfriday Markdown Processor
// Available at http://github.com/russross/blackfriday
//
// Copyright © 2011 Russ Ross <russ@russross.com>.
// Distributed under the Simplified BSD License.
// See README.md for details.
//
//
//
// SmartyPants rendering
//
//
package blackfriday
import (
"bytes"
)
type smartypantsData struct {
inSingleQuote bool
inDoubleQuote bool
}
func wordBoundary(c byte) bool {
return c == 0 || isspace(c) || ispunct(c)
}
func tolower(c byte) byte {
if c >= 'A' && c <= 'Z' {
return c - 'A' + 'a'
}
return c
}
func isdigit(c byte) bool {
return c >= '0' && c <= '9'
}
func smartQuoteHelper(out *bytes.Buffer, previousChar byte, nextChar byte, quote byte, isOpen *bool) bool {
// edge of the buffer is likely to be a tag that we don't get to see,
// so we treat it like text sometimes
// enumerate all sixteen possibilities for (previousChar, nextChar)
// each can be one of {0, space, punct, other}
switch {
case previousChar == 0 && nextChar == 0:
// context is not any help here, so toggle
*isOpen = !*isOpen
case isspace(previousChar) && nextChar == 0:
// [ "] might be [ "<code>foo...]
*isOpen = true
case ispunct(previousChar) && nextChar == 0:
// [!"] hmm... could be [Run!"] or [("<code>...]
*isOpen = false
case /* isnormal(previousChar) && */ nextChar == 0:
// [a"] is probably a close
*isOpen = false
case previousChar == 0 && isspace(nextChar):
// [" ] might be [...foo</code>" ]
*isOpen = false
case isspace(previousChar) && isspace(nextChar):
// [ " ] context is not any help here, so toggle
*isOpen = !*isOpen
case ispunct(previousChar) && isspace(nextChar):
// [!" ] is probably a close
*isOpen = false
case /* isnormal(previousChar) && */ isspace(nextChar):
// [a" ] this is one of the easy cases
*isOpen = false
case previousChar == 0 && ispunct(nextChar):
// ["!] hmm... could be ["$1.95] or [</code>"!...]
*isOpen = false
case isspace(previousChar) && ispunct(nextChar):
// [ "!] looks more like [ "$1.95]
*isOpen = true
case ispunct(previousChar) && ispunct(nextChar):
// [!"!] context is not any help here, so toggle
*isOpen = !*isOpen
case /* isnormal(previousChar) && */ ispunct(nextChar):
// [a"!] is probably a close
*isOpen = false
case previousChar == 0 /* && isnormal(nextChar) */ :
// ["a] is probably an open
*isOpen = true
case isspace(previousChar) /* && isnormal(nextChar) */ :
// [ "a] this is one of the easy cases
*isOpen = true
case ispunct(previousChar) /* && isnormal(nextChar) */ :
// [!"a] is probably an open
*isOpen = true
default:
// [a'b] maybe a contraction?
*isOpen = false
}
out.WriteByte('&')
if *isOpen {
out.WriteByte('l')
} else {
out.WriteByte('r')
}
out.WriteByte(quote)
out.WriteString("quo;")
return true
}
func smartSingleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if len(text) >= 2 {
t1 := tolower(text[1])
if t1 == '\'' {
nextChar := byte(0)
if len(text) >= 3 {
nextChar = text[2]
}
if smartQuoteHelper(out, previousChar, nextChar, 'd', &smrt.inDoubleQuote) {
return 1
}
}
if (t1 == 's' || t1 == 't' || t1 == 'm' || t1 == 'd') && (len(text) < 3 || wordBoundary(text[2])) {
out.WriteString("&rsquo;")
return 0
}
if len(text) >= 3 {
t2 := tolower(text[2])
if ((t1 == 'r' && t2 == 'e') || (t1 == 'l' && t2 == 'l') || (t1 == 'v' && t2 == 'e')) &&
(len(text) < 4 || wordBoundary(text[3])) {
out.WriteString("&rsquo;")
return 0
}
}
}
nextChar := byte(0)
if len(text) > 1 {
nextChar = text[1]
}
if smartQuoteHelper(out, previousChar, nextChar, 's', &smrt.inSingleQuote) {
return 0
}
out.WriteByte(text[0])
return 0
}
func smartParens(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if len(text) >= 3 {
t1 := tolower(text[1])
t2 := tolower(text[2])
if t1 == 'c' && t2 == ')' {
out.WriteString("&copy;")
return 2
}
if t1 == 'r' && t2 == ')' {
out.WriteString("&reg;")
return 2
}
if len(text) >= 4 && t1 == 't' && t2 == 'm' && text[3] == ')' {
out.WriteString("&trade;")
return 3
}
}
out.WriteByte(text[0])
return 0
}
func smartDash(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if len(text) >= 2 {
if text[1] == '-' {
out.WriteString("&mdash;")
return 1
}
if wordBoundary(previousChar) && wordBoundary(text[1]) {
out.WriteString("&ndash;")
return 0
}
}
out.WriteByte(text[0])
return 0
}
func smartDashLatex(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if len(text) >= 3 && text[1] == '-' && text[2] == '-' {
out.WriteString("&mdash;")
return 2
}
if len(text) >= 2 && text[1] == '-' {
out.WriteString("&ndash;")
return 1
}
out.WriteByte(text[0])
return 0
}
func smartAmpVariant(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte, quote byte) int {
if bytes.HasPrefix(text, []byte("&quot;")) {
nextChar := byte(0)
if len(text) >= 7 {
nextChar = text[6]
}
if smartQuoteHelper(out, previousChar, nextChar, quote, &smrt.inDoubleQuote) {
return 5
}
}
if bytes.HasPrefix(text, []byte("&#0;")) {
return 3
}
out.WriteByte('&')
return 0
}
func smartAmp(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
return smartAmpVariant(out, smrt, previousChar, text, 'd')
}
func smartAmpAngledQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
return smartAmpVariant(out, smrt, previousChar, text, 'a')
}
func smartPeriod(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if len(text) >= 3 && text[1] == '.' && text[2] == '.' {
out.WriteString("&hellip;")
return 2
}
if len(text) >= 5 && text[1] == ' ' && text[2] == '.' && text[3] == ' ' && text[4] == '.' {
out.WriteString("&hellip;")
return 4
}
out.WriteByte(text[0])
return 0
}
func smartBacktick(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if len(text) >= 2 && text[1] == '`' {
nextChar := byte(0)
if len(text) >= 3 {
nextChar = text[2]
}
if smartQuoteHelper(out, previousChar, nextChar, 'd', &smrt.inDoubleQuote) {
return 1
}
}
out.WriteByte(text[0])
return 0
}
func smartNumberGeneric(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if wordBoundary(previousChar) && previousChar != '/' && len(text) >= 3 {
// is it of the form digits/digits(word boundary)?, i.e., \d+/\d+\b
// note: check for regular slash (/) or fraction slash (, 0x2044, or 0xe2 81 84 in utf-8)
// and avoid changing dates like 1/23/2005 into fractions.
numEnd := 0
for len(text) > numEnd && isdigit(text[numEnd]) {
numEnd++
}
if numEnd == 0 {
out.WriteByte(text[0])
return 0
}
denStart := numEnd + 1
if len(text) > numEnd+3 && text[numEnd] == 0xe2 && text[numEnd+1] == 0x81 && text[numEnd+2] == 0x84 {
denStart = numEnd + 3
} else if len(text) < numEnd+2 || text[numEnd] != '/' {
out.WriteByte(text[0])
return 0
}
denEnd := denStart
for len(text) > denEnd && isdigit(text[denEnd]) {
denEnd++
}
if denEnd == denStart {
out.WriteByte(text[0])
return 0
}
if len(text) == denEnd || wordBoundary(text[denEnd]) && text[denEnd] != '/' {
out.WriteString("<sup>")
out.Write(text[:numEnd])
out.WriteString("</sup>&frasl;<sub>")
out.Write(text[denStart:denEnd])
out.WriteString("</sub>")
return denEnd - 1
}
}
out.WriteByte(text[0])
return 0
}
func smartNumber(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
if wordBoundary(previousChar) && previousChar != '/' && len(text) >= 3 {
if text[0] == '1' && text[1] == '/' && text[2] == '2' {
if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' {
out.WriteString("&frac12;")
return 2
}
}
if text[0] == '1' && text[1] == '/' && text[2] == '4' {
if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' || (len(text) >= 5 && tolower(text[3]) == 't' && tolower(text[4]) == 'h') {
out.WriteString("&frac14;")
return 2
}
}
if text[0] == '3' && text[1] == '/' && text[2] == '4' {
if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' || (len(text) >= 6 && tolower(text[3]) == 't' && tolower(text[4]) == 'h' && tolower(text[5]) == 's') {
out.WriteString("&frac34;")
return 2
}
}
}
out.WriteByte(text[0])
return 0
}
func smartDoubleQuoteVariant(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte, quote byte) int {
nextChar := byte(0)
if len(text) > 1 {
nextChar = text[1]
}
if !smartQuoteHelper(out, previousChar, nextChar, quote, &smrt.inDoubleQuote) {
out.WriteString("&quot;")
}
return 0
}
func smartDoubleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
return smartDoubleQuoteVariant(out, smrt, previousChar, text, 'd')
}
func smartAngledDoubleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
return smartDoubleQuoteVariant(out, smrt, previousChar, text, 'a')
}
func smartLeftAngle(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
i := 0
for i < len(text) && text[i] != '>' {
i++
}
out.Write(text[:i+1])
return i
}
type smartCallback func(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int
type smartypantsRenderer [256]smartCallback
func smartypants(flags int) *smartypantsRenderer {
r := new(smartypantsRenderer)
if flags&HTML_SMARTYPANTS_ANGLED_QUOTES == 0 {
r['"'] = smartDoubleQuote
r['&'] = smartAmp
} else {
r['"'] = smartAngledDoubleQuote
r['&'] = smartAmpAngledQuote
}
r['\''] = smartSingleQuote
r['('] = smartParens
if flags&HTML_SMARTYPANTS_DASHES != 0 {
if flags&HTML_SMARTYPANTS_LATEX_DASHES == 0 {
r['-'] = smartDash
} else {
r['-'] = smartDashLatex
}
}
r['.'] = smartPeriod
if flags&HTML_SMARTYPANTS_FRACTIONS == 0 {
r['1'] = smartNumber
r['3'] = smartNumber
} else {
for ch := '1'; ch <= '9'; ch++ {
r[ch] = smartNumberGeneric
}
}
r['<'] = smartLeftAngle
r['`'] = smartBacktick
return r
}

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<p>AT&amp;T has an ampersand in their name.</p>
<p>AT&amp;T is another way to write it.</p>
<p>This &amp; that.</p>
<p>4 &lt; 5.</p>
<p>6 &gt; 5.</p>
<p>Here's a <a href="http://example.com/?foo=1&amp;bar=2">link</a> with an ampersand in the URL.</p>
<p>Here's a link with an amersand in the link text: <a href="http://att.com/" title="AT&amp;T">AT&amp;T</a>.</p>
<p>Here's an inline <a href="/script?foo=1&amp;bar=2">link</a>.</p>
<p>Here's an inline <a href="/script?foo=1&amp;bar=2">link</a>.</p>

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AT&T has an ampersand in their name.
AT&amp;T is another way to write it.
This & that.
4 < 5.
6 > 5.
Here's a [link] [1] with an ampersand in the URL.
Here's a link with an amersand in the link text: [AT&T] [2].
Here's an inline [link](/script?foo=1&bar=2).
Here's an inline [link](</script?foo=1&bar=2>).
[1]: http://example.com/?foo=1&bar=2
[2]: http://att.com/ "AT&T"

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<p>Link: <a href="http://example.com/">http://example.com/</a>.</p>
<p>With an ampersand: <a href="http://example.com/?foo=1&amp;bar=2">http://example.com/?foo=1&amp;bar=2</a></p>
<ul>
<li>In a list?</li>
<li><a href="http://example.com/">http://example.com/</a></li>
<li>It should.</li>
</ul>
<blockquote>
<p>Blockquoted: <a href="http://example.com/">http://example.com/</a></p>
</blockquote>
<p>Auto-links should not occur here: <code>&lt;http://example.com/&gt;</code></p>
<pre><code>or here: &lt;http://example.com/&gt;
</code></pre>

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Link: <http://example.com/>.
With an ampersand: <http://example.com/?foo=1&bar=2>
* In a list?
* <http://example.com/>
* It should.
> Blockquoted: <http://example.com/>
Auto-links should not occur here: `<http://example.com/>`
or here: <http://example.com/>

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<p>These should all get escaped:</p>
<p>Backslash: \</p>
<p>Backtick: `</p>
<p>Asterisk: *</p>
<p>Underscore: _</p>
<p>Left brace: {</p>
<p>Right brace: }</p>
<p>Left bracket: [</p>
<p>Right bracket: ]</p>
<p>Left paren: (</p>
<p>Right paren: )</p>
<p>Greater-than: &gt;</p>
<p>Hash: #</p>
<p>Period: .</p>
<p>Bang: !</p>
<p>Plus: +</p>
<p>Minus: -</p>
<p>Tilde: ~</p>
<p>These should not, because they occur within a code block:</p>
<pre><code>Backslash: \\
Backtick: \`
Asterisk: \*
Underscore: \_
Left brace: \{
Right brace: \}
Left bracket: \[
Right bracket: \]
Left paren: \(
Right paren: \)
Greater-than: \&gt;
Hash: \#
Period: \.
Bang: \!
Plus: \+
Minus: \-
Tilde: \~
</code></pre>
<p>Nor should these, which occur in code spans:</p>
<p>Backslash: <code>\\</code></p>
<p>Backtick: <code>\`</code></p>
<p>Asterisk: <code>\*</code></p>
<p>Underscore: <code>\_</code></p>
<p>Left brace: <code>\{</code></p>
<p>Right brace: <code>\}</code></p>
<p>Left bracket: <code>\[</code></p>
<p>Right bracket: <code>\]</code></p>
<p>Left paren: <code>\(</code></p>
<p>Right paren: <code>\)</code></p>
<p>Greater-than: <code>\&gt;</code></p>
<p>Hash: <code>\#</code></p>
<p>Period: <code>\.</code></p>
<p>Bang: <code>\!</code></p>
<p>Plus: <code>\+</code></p>
<p>Minus: <code>\-</code></p>
<p>Tilde: <code>\~</code></p>
<p>These should get escaped, even though they're matching pairs for
other Markdown constructs:</p>
<p>*asterisks*</p>
<p>_underscores_</p>
<p>`backticks`</p>
<p>This is a code span with a literal backslash-backtick sequence: <code>\`</code></p>
<p>This is a tag with unescaped backticks <span attr='`ticks`'>bar</span>.</p>
<p>This is a tag with backslashes <span attr='\\backslashes\\'>bar</span>.</p>

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These should all get escaped:
Backslash: \\
Backtick: \`
Asterisk: \*
Underscore: \_
Left brace: \{
Right brace: \}
Left bracket: \[
Right bracket: \]
Left paren: \(
Right paren: \)
Greater-than: \>
Hash: \#
Period: \.
Bang: \!
Plus: \+
Minus: \-
Tilde: \~
These should not, because they occur within a code block:
Backslash: \\
Backtick: \`
Asterisk: \*
Underscore: \_
Left brace: \{
Right brace: \}
Left bracket: \[
Right bracket: \]
Left paren: \(
Right paren: \)
Greater-than: \>
Hash: \#
Period: \.
Bang: \!
Plus: \+
Minus: \-
Tilde: \~
Nor should these, which occur in code spans:
Backslash: `\\`
Backtick: `` \` ``
Asterisk: `\*`
Underscore: `\_`
Left brace: `\{`
Right brace: `\}`
Left bracket: `\[`
Right bracket: `\]`
Left paren: `\(`
Right paren: `\)`
Greater-than: `\>`
Hash: `\#`
Period: `\.`
Bang: `\!`
Plus: `\+`
Minus: `\-`
Tilde: `\~`
These should get escaped, even though they're matching pairs for
other Markdown constructs:
\*asterisks\*
\_underscores\_
\`backticks\`
This is a code span with a literal backslash-backtick sequence: `` \` ``
This is a tag with unescaped backticks <span attr='`ticks`'>bar</span>.
This is a tag with backslashes <span attr='\\backslashes\\'>bar</span>.

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<blockquote>
<p>Example:</p>
<pre><code>sub status {
print &quot;working&quot;;
}
</code></pre>
<p>Or:</p>
<pre><code>sub status {
return &quot;working&quot;;
}
</code></pre>
</blockquote>

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> Example:
>
> sub status {
> print "working";
> }
>
> Or:
>
> sub status {
> return "working";
> }

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<pre><code>code block on the first line
</code></pre>
<p>Regular text.</p>
<pre><code>code block indented by spaces
</code></pre>
<p>Regular text.</p>
<pre><code>the lines in this block
all contain trailing spaces
</code></pre>
<p>Regular Text.</p>
<pre><code>code block on the last line
</code></pre>

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code block on the first line
Regular text.
code block indented by spaces
Regular text.
the lines in this block
all contain trailing spaces
Regular Text.
code block on the last line

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<p><code>&lt;test a=&quot;</code> content of attribute <code>&quot;&gt;</code></p>
<p>Fix for backticks within HTML tag: <span attr='`ticks`'>like this</span></p>
<p>Here's how you put <code>`backticks`</code> in a code span.</p>

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`<test a="` content of attribute `">`
Fix for backticks within HTML tag: <span attr='`ticks`'>like this</span>
Here's how you put `` `backticks` `` in a code span.

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<p>In Markdown 1.0.0 and earlier. Version</p>
<ol>
<li>This line turns into a list item.
Because a hard-wrapped line in the
middle of a paragraph looked like a
list item.</li>
</ol>
<p>Here's one with a bullet.</p>
<ul>
<li>criminey.</li>
</ul>

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In Markdown 1.0.0 and earlier. Version
8. This line turns into a list item.
Because a hard-wrapped line in the
middle of a paragraph looked like a
list item.
Here's one with a bullet.
* criminey.

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<p>In Markdown 1.0.0 and earlier. Version
8. This line turns into a list item.
Because a hard-wrapped line in the
middle of a paragraph looked like a
list item.</p>
<p>Here's one with a bullet.
* criminey.</p>

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In Markdown 1.0.0 and earlier. Version
8. This line turns into a list item.
Because a hard-wrapped line in the
middle of a paragraph looked like a
list item.
Here's one with a bullet.
* criminey.

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<p>Dashes:</p>
<hr>
<hr>
<hr>
<hr>
<pre><code>---
</code></pre>
<hr>
<hr>
<hr>
<hr>
<pre><code>- - -
</code></pre>
<p>Asterisks:</p>
<hr>
<hr>
<hr>
<hr>
<pre><code>***
</code></pre>
<hr>
<hr>
<hr>
<hr>
<pre><code>* * *
</code></pre>
<p>Underscores:</p>
<hr>
<hr>
<hr>
<hr>
<pre><code>___
</code></pre>
<hr>
<hr>
<hr>
<hr>
<pre><code>_ _ _
</code></pre>

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Dashes:
---
---
---
---
---
- - -
- - -
- - -
- - -
- - -
Asterisks:
***
***
***
***
***
* * *
* * *
* * *
* * *
* * *
Underscores:
___
___
___
___
___
_ _ _
_ _ _
_ _ _
_ _ _
_ _ _

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<p>Simple block on one line:</p>
<div>foo</div>
<p>And nested without indentation:</p>
<div>
<div>
<div>
foo
</div>
<div style=">"/>
</div>
<div>bar</div>
</div>

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Simple block on one line:
<div>foo</div>
And nested without indentation:
<div>
<div>
<div>
foo
</div>
<div style=">"/>
</div>
<div>bar</div>
</div>

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<p>Here's a simple block:</p>
<div>
foo
</div>
<p>This should be a code block, though:</p>
<pre><code>&lt;div&gt;
foo
&lt;/div&gt;
</code></pre>
<p>As should this:</p>
<pre><code>&lt;div&gt;foo&lt;/div&gt;
</code></pre>
<p>Now, nested:</p>
<div>
<div>
<div>
foo
</div>
</div>
</div>
<p>This should just be an HTML comment:</p>
<!-- Comment -->
<p>Multiline:</p>
<!--
Blah
Blah
-->
<p>Code block:</p>
<pre><code>&lt;!-- Comment --&gt;
</code></pre>
<p>Just plain comment, with trailing spaces on the line:</p>
<!-- foo -->
<p>Code:</p>
<pre><code>&lt;hr /&gt;
</code></pre>
<p>Hr's:</p>
<hr>
<hr/>
<hr />
<hr>
<hr/>
<hr />
<hr class="foo" id="bar" />
<hr class="foo" id="bar"/>
<hr class="foo" id="bar" >

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Here's a simple block:
<div>
foo
</div>
This should be a code block, though:
<div>
foo
</div>
As should this:
<div>foo</div>
Now, nested:
<div>
<div>
<div>
foo
</div>
</div>
</div>
This should just be an HTML comment:
<!-- Comment -->
Multiline:
<!--
Blah
Blah
-->
Code block:
<!-- Comment -->
Just plain comment, with trailing spaces on the line:
<!-- foo -->
Code:
<hr />
Hr's:
<hr>
<hr/>
<hr />
<hr>
<hr/>
<hr />
<hr class="foo" id="bar" />
<hr class="foo" id="bar"/>
<hr class="foo" id="bar" >

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<p>Paragraph one.</p>
<!-- This is a simple comment -->
<!--
This is another comment.
-->
<p>Paragraph two.</p>
<!-- one comment block -- -- with two comments -->
<p>The end.</p>

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Paragraph one.
<!-- This is a simple comment -->
<!--
This is another comment.
-->
Paragraph two.
<!-- one comment block -- -- with two comments -->
The end.

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<p>Just a <a href="/url/">URL</a>.</p>
<p><a href="/url/" title="title">URL and title</a>.</p>
<p><a href="/url/" title="title preceded by two spaces">URL and title</a>.</p>
<p><a href="/url/" title="title preceded by a tab">URL and title</a>.</p>
<p><a href="/url/" title="title has spaces afterward">URL and title</a>.</p>
<p>[Empty]().</p>

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Just a [URL](/url/).
[URL and title](/url/ "title").
[URL and title](/url/ "title preceded by two spaces").
[URL and title](/url/ "title preceded by a tab").
[URL and title](/url/ "title has spaces afterward" ).
[Empty]().

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<p>Foo <a href="/url/" title="Title">bar</a>.</p>
<p>Foo <a href="/url/" title="Title">bar</a>.</p>
<p>Foo <a href="/url/" title="Title">bar</a>.</p>
<p>With <a href="/url/">embedded [brackets]</a>.</p>
<p>Indented <a href="/url">once</a>.</p>
<p>Indented <a href="/url">twice</a>.</p>
<p>Indented <a href="/url">thrice</a>.</p>
<p>Indented [four][] times.</p>
<pre><code>[four]: /url
</code></pre>
<hr>
<p><a href="foo">this</a> should work</p>
<p>So should <a href="foo">this</a>.</p>
<p>And <a href="foo">this</a>.</p>
<p>And <a href="foo">this</a>.</p>
<p>And <a href="foo">this</a>.</p>
<p>But not [that] [].</p>
<p>Nor [that][].</p>
<p>Nor [that].</p>
<p>[Something in brackets like <a href="foo">this</a> should work]</p>
<p>[Same with <a href="foo">this</a>.]</p>
<p>In this case, <a href="/somethingelse/">this</a> points to something else.</p>
<p>Backslashing should suppress [this] and [this].</p>
<hr>
<p>Here's one where the <a href="/url/">link
breaks</a> across lines.</p>
<p>Here's another where the <a href="/url/">link
breaks</a> across lines, but with a line-ending space.</p>

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@ -0,0 +1,71 @@
Foo [bar] [1].
Foo [bar][1].
Foo [bar]
[1].
[1]: /url/ "Title"
With [embedded [brackets]] [b].
Indented [once][].
Indented [twice][].
Indented [thrice][].
Indented [four][] times.
[once]: /url
[twice]: /url
[thrice]: /url
[four]: /url
[b]: /url/
* * *
[this] [this] should work
So should [this][this].
And [this] [].
And [this][].
And [this].
But not [that] [].
Nor [that][].
Nor [that].
[Something in brackets like [this][] should work]
[Same with [this].]
In this case, [this](/somethingelse/) points to something else.
Backslashing should suppress \[this] and [this\].
[this]: foo
* * *
Here's one where the [link
breaks] across lines.
Here's another where the [link
breaks] across lines, but with a line-ending space.
[link breaks]: /url/

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<p>This is the <a href="/simple">simple case</a>.</p>
<p>This one has a <a href="/foo">line
break</a>.</p>
<p>This one has a <a href="/foo">line
break</a> with a line-ending space.</p>
<p><a href="/that">this</a> and the <a href="/other">other</a></p>

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@ -0,0 +1,20 @@
This is the [simple case].
[simple case]: /simple
This one has a [line
break].
This one has a [line
break] with a line-ending space.
[line break]: /foo
[this] [that] and the [other]
[this]: /this
[that]: /that
[other]: /other

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<p>Foo <a href="/url/" title="Title with &quot;quotes&quot; inside">bar</a>.</p>
<p>Foo <a href="/url/" title="Title with &quot;quotes&quot; inside">bar</a>.</p>

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@ -0,0 +1,7 @@
Foo [bar][].
Foo [bar](/url/ "Title with "quotes" inside").
[bar]: /url/ "Title with "quotes" inside"

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<h1>Markdown: Basics</h1>
<ul id="ProjectSubmenu">
<li><a href="/projects/markdown/" title="Markdown Project Page">Main</a></li>
<li><a class="selected" title="Markdown Basics">Basics</a></li>
<li><a href="/projects/markdown/syntax" title="Markdown Syntax Documentation">Syntax</a></li>
<li><a href="/projects/markdown/license" title="Pricing and License Information">License</a></li>
<li><a href="/projects/markdown/dingus" title="Online Markdown Web Form">Dingus</a></li>
</ul>
<h2>Getting the Gist of Markdown's Formatting Syntax</h2>
<p>This page offers a brief overview of what it's like to use Markdown.
The <a href="/projects/markdown/syntax" title="Markdown Syntax">syntax page</a> provides complete, detailed documentation for
every feature, but Markdown should be very easy to pick up simply by
looking at a few examples of it in action. The examples on this page
are written in a before/after style, showing example syntax and the
HTML output produced by Markdown.</p>
<p>It's also helpful to simply try Markdown out; the <a href="/projects/markdown/dingus" title="Markdown Dingus">Dingus</a> is a
web application that allows you type your own Markdown-formatted text
and translate it to XHTML.</p>
<p><strong>Note:</strong> This document is itself written using Markdown; you
can <a href="/projects/markdown/basics.text">see the source for it by adding '.text' to the URL</a>.</p>
<h2>Paragraphs, Headers, Blockquotes</h2>
<p>A paragraph is simply one or more consecutive lines of text, separated
by one or more blank lines. (A blank line is any line that looks like a
blank line -- a line containing nothing spaces or tabs is considered
blank.) Normal paragraphs should not be intended with spaces or tabs.</p>
<p>Markdown offers two styles of headers: <em>Setext</em> and <em>atx</em>.
Setext-style headers for <code>&lt;h1&gt;</code> and <code>&lt;h2&gt;</code> are created by
&quot;underlining&quot; with equal signs (<code>=</code>) and hyphens (<code>-</code>), respectively.
To create an atx-style header, you put 1-6 hash marks (<code>#</code>) at the
beginning of the line -- the number of hashes equals the resulting
HTML header level.</p>
<p>Blockquotes are indicated using email-style '<code>&gt;</code>' angle brackets.</p>
<p>Markdown:</p>
<pre><code>A First Level Header
====================
A Second Level Header
---------------------
Now is the time for all good men to come to
the aid of their country. This is just a
regular paragraph.
The quick brown fox jumped over the lazy
dog's back.
### Header 3
&gt; This is a blockquote.
&gt;
&gt; This is the second paragraph in the blockquote.
&gt;
&gt; ## This is an H2 in a blockquote
</code></pre>
<p>Output:</p>
<pre><code>&lt;h1&gt;A First Level Header&lt;/h1&gt;
&lt;h2&gt;A Second Level Header&lt;/h2&gt;
&lt;p&gt;Now is the time for all good men to come to
the aid of their country. This is just a
regular paragraph.&lt;/p&gt;
&lt;p&gt;The quick brown fox jumped over the lazy
dog's back.&lt;/p&gt;
&lt;h3&gt;Header 3&lt;/h3&gt;
&lt;blockquote&gt;
&lt;p&gt;This is a blockquote.&lt;/p&gt;
&lt;p&gt;This is the second paragraph in the blockquote.&lt;/p&gt;
&lt;h2&gt;This is an H2 in a blockquote&lt;/h2&gt;
&lt;/blockquote&gt;
</code></pre>
<h3>Phrase Emphasis</h3>
<p>Markdown uses asterisks and underscores to indicate spans of emphasis.</p>
<p>Markdown:</p>
<pre><code>Some of these words *are emphasized*.
Some of these words _are emphasized also_.
Use two asterisks for **strong emphasis**.
Or, if you prefer, __use two underscores instead__.
</code></pre>
<p>Output:</p>
<pre><code>&lt;p&gt;Some of these words &lt;em&gt;are emphasized&lt;/em&gt;.
Some of these words &lt;em&gt;are emphasized also&lt;/em&gt;.&lt;/p&gt;
&lt;p&gt;Use two asterisks for &lt;strong&gt;strong emphasis&lt;/strong&gt;.
Or, if you prefer, &lt;strong&gt;use two underscores instead&lt;/strong&gt;.&lt;/p&gt;
</code></pre>
<h2>Lists</h2>
<p>Unordered (bulleted) lists use asterisks, pluses, and hyphens (<code>*</code>,
<code>+</code>, and <code>-</code>) as list markers. These three markers are
interchangable; this:</p>
<pre><code>* Candy.
* Gum.
* Booze.
</code></pre>
<p>this:</p>
<pre><code>+ Candy.
+ Gum.
+ Booze.
</code></pre>
<p>and this:</p>
<pre><code>- Candy.
- Gum.
- Booze.
</code></pre>
<p>all produce the same output:</p>
<pre><code>&lt;ul&gt;
&lt;li&gt;Candy.&lt;/li&gt;
&lt;li&gt;Gum.&lt;/li&gt;
&lt;li&gt;Booze.&lt;/li&gt;
&lt;/ul&gt;
</code></pre>
<p>Ordered (numbered) lists use regular numbers, followed by periods, as
list markers:</p>
<pre><code>1. Red
2. Green
3. Blue
</code></pre>
<p>Output:</p>
<pre><code>&lt;ol&gt;
&lt;li&gt;Red&lt;/li&gt;
&lt;li&gt;Green&lt;/li&gt;
&lt;li&gt;Blue&lt;/li&gt;
&lt;/ol&gt;
</code></pre>
<p>If you put blank lines between items, you'll get <code>&lt;p&gt;</code> tags for the
list item text. You can create multi-paragraph list items by indenting
the paragraphs by 4 spaces or 1 tab:</p>
<pre><code>* A list item.
With multiple paragraphs.
* Another item in the list.
</code></pre>
<p>Output:</p>
<pre><code>&lt;ul&gt;
&lt;li&gt;&lt;p&gt;A list item.&lt;/p&gt;
&lt;p&gt;With multiple paragraphs.&lt;/p&gt;&lt;/li&gt;
&lt;li&gt;&lt;p&gt;Another item in the list.&lt;/p&gt;&lt;/li&gt;
&lt;/ul&gt;
</code></pre>
<h3>Links</h3>
<p>Markdown supports two styles for creating links: <em>inline</em> and
<em>reference</em>. With both styles, you use square brackets to delimit the
text you want to turn into a link.</p>
<p>Inline-style links use parentheses immediately after the link text.
For example:</p>
<pre><code>This is an [example link](http://example.com/).
</code></pre>
<p>Output:</p>
<pre><code>&lt;p&gt;This is an &lt;a href=&quot;http://example.com/&quot;&gt;
example link&lt;/a&gt;.&lt;/p&gt;
</code></pre>
<p>Optionally, you may include a title attribute in the parentheses:</p>
<pre><code>This is an [example link](http://example.com/ &quot;With a Title&quot;).
</code></pre>
<p>Output:</p>
<pre><code>&lt;p&gt;This is an &lt;a href=&quot;http://example.com/&quot; title=&quot;With a Title&quot;&gt;
example link&lt;/a&gt;.&lt;/p&gt;
</code></pre>
<p>Reference-style links allow you to refer to your links by names, which
you define elsewhere in your document:</p>
<pre><code>I get 10 times more traffic from [Google][1] than from
[Yahoo][2] or [MSN][3].
[1]: http://google.com/ &quot;Google&quot;
[2]: http://search.yahoo.com/ &quot;Yahoo Search&quot;
[3]: http://search.msn.com/ &quot;MSN Search&quot;
</code></pre>
<p>Output:</p>
<pre><code>&lt;p&gt;I get 10 times more traffic from &lt;a href=&quot;http://google.com/&quot;
title=&quot;Google&quot;&gt;Google&lt;/a&gt; than from &lt;a href=&quot;http://search.yahoo.com/&quot;
title=&quot;Yahoo Search&quot;&gt;Yahoo&lt;/a&gt; or &lt;a href=&quot;http://search.msn.com/&quot;
title=&quot;MSN Search&quot;&gt;MSN&lt;/a&gt;.&lt;/p&gt;
</code></pre>
<p>The title attribute is optional. Link names may contain letters,
numbers and spaces, but are <em>not</em> case sensitive:</p>
<pre><code>I start my morning with a cup of coffee and
[The New York Times][NY Times].
[ny times]: http://www.nytimes.com/
</code></pre>
<p>Output:</p>
<pre><code>&lt;p&gt;I start my morning with a cup of coffee and
&lt;a href=&quot;http://www.nytimes.com/&quot;&gt;The New York Times&lt;/a&gt;.&lt;/p&gt;
</code></pre>
<h3>Images</h3>
<p>Image syntax is very much like link syntax.</p>
<p>Inline (titles are optional):</p>
<pre><code>![alt text](/path/to/img.jpg &quot;Title&quot;)
</code></pre>
<p>Reference-style:</p>
<pre><code>![alt text][id]
[id]: /path/to/img.jpg &quot;Title&quot;
</code></pre>
<p>Both of the above examples produce the same output:</p>
<pre><code>&lt;img src=&quot;/path/to/img.jpg&quot; alt=&quot;alt text&quot; title=&quot;Title&quot; /&gt;
</code></pre>
<h3>Code</h3>
<p>In a regular paragraph, you can create code span by wrapping text in
backtick quotes. Any ampersands (<code>&amp;</code>) and angle brackets (<code>&lt;</code> or
<code>&gt;</code>) will automatically be translated into HTML entities. This makes
it easy to use Markdown to write about HTML example code:</p>
<pre><code>I strongly recommend against using any `&lt;blink&gt;` tags.
I wish SmartyPants used named entities like `&amp;mdash;`
instead of decimal-encoded entites like `&amp;#8212;`.
</code></pre>
<p>Output:</p>
<pre><code>&lt;p&gt;I strongly recommend against using any
&lt;code&gt;&amp;lt;blink&amp;gt;&lt;/code&gt; tags.&lt;/p&gt;
&lt;p&gt;I wish SmartyPants used named entities like
&lt;code&gt;&amp;amp;mdash;&lt;/code&gt; instead of decimal-encoded
entites like &lt;code&gt;&amp;amp;#8212;&lt;/code&gt;.&lt;/p&gt;
</code></pre>
<p>To specify an entire block of pre-formatted code, indent every line of
the block by 4 spaces or 1 tab. Just like with code spans, <code>&amp;</code>, <code>&lt;</code>,
and <code>&gt;</code> characters will be escaped automatically.</p>
<p>Markdown:</p>
<pre><code>If you want your page to validate under XHTML 1.0 Strict,
you've got to put paragraph tags in your blockquotes:
&lt;blockquote&gt;
&lt;p&gt;For example.&lt;/p&gt;
&lt;/blockquote&gt;
</code></pre>
<p>Output:</p>
<pre><code>&lt;p&gt;If you want your page to validate under XHTML 1.0 Strict,
you've got to put paragraph tags in your blockquotes:&lt;/p&gt;
&lt;pre&gt;&lt;code&gt;&amp;lt;blockquote&amp;gt;
&amp;lt;p&amp;gt;For example.&amp;lt;/p&amp;gt;
&amp;lt;/blockquote&amp;gt;
&lt;/code&gt;&lt;/pre&gt;
</code></pre>

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Markdown: Basics
================
<ul id="ProjectSubmenu">
<li><a href="/projects/markdown/" title="Markdown Project Page">Main</a></li>
<li><a class="selected" title="Markdown Basics">Basics</a></li>
<li><a href="/projects/markdown/syntax" title="Markdown Syntax Documentation">Syntax</a></li>
<li><a href="/projects/markdown/license" title="Pricing and License Information">License</a></li>
<li><a href="/projects/markdown/dingus" title="Online Markdown Web Form">Dingus</a></li>
</ul>
Getting the Gist of Markdown's Formatting Syntax
------------------------------------------------
This page offers a brief overview of what it's like to use Markdown.
The [syntax page] [s] provides complete, detailed documentation for
every feature, but Markdown should be very easy to pick up simply by
looking at a few examples of it in action. The examples on this page
are written in a before/after style, showing example syntax and the
HTML output produced by Markdown.
It's also helpful to simply try Markdown out; the [Dingus] [d] is a
web application that allows you type your own Markdown-formatted text
and translate it to XHTML.
**Note:** This document is itself written using Markdown; you
can [see the source for it by adding '.text' to the URL] [src].
[s]: /projects/markdown/syntax "Markdown Syntax"
[d]: /projects/markdown/dingus "Markdown Dingus"
[src]: /projects/markdown/basics.text
## Paragraphs, Headers, Blockquotes ##
A paragraph is simply one or more consecutive lines of text, separated
by one or more blank lines. (A blank line is any line that looks like a
blank line -- a line containing nothing spaces or tabs is considered
blank.) Normal paragraphs should not be intended with spaces or tabs.
Markdown offers two styles of headers: *Setext* and *atx*.
Setext-style headers for `<h1>` and `<h2>` are created by
"underlining" with equal signs (`=`) and hyphens (`-`), respectively.
To create an atx-style header, you put 1-6 hash marks (`#`) at the
beginning of the line -- the number of hashes equals the resulting
HTML header level.
Blockquotes are indicated using email-style '`>`' angle brackets.
Markdown:
A First Level Header
====================
A Second Level Header
---------------------
Now is the time for all good men to come to
the aid of their country. This is just a
regular paragraph.
The quick brown fox jumped over the lazy
dog's back.
### Header 3
> This is a blockquote.
>
> This is the second paragraph in the blockquote.
>
> ## This is an H2 in a blockquote
Output:
<h1>A First Level Header</h1>
<h2>A Second Level Header</h2>
<p>Now is the time for all good men to come to
the aid of their country. This is just a
regular paragraph.</p>
<p>The quick brown fox jumped over the lazy
dog's back.</p>
<h3>Header 3</h3>
<blockquote>
<p>This is a blockquote.</p>
<p>This is the second paragraph in the blockquote.</p>
<h2>This is an H2 in a blockquote</h2>
</blockquote>
### Phrase Emphasis ###
Markdown uses asterisks and underscores to indicate spans of emphasis.
Markdown:
Some of these words *are emphasized*.
Some of these words _are emphasized also_.
Use two asterisks for **strong emphasis**.
Or, if you prefer, __use two underscores instead__.
Output:
<p>Some of these words <em>are emphasized</em>.
Some of these words <em>are emphasized also</em>.</p>
<p>Use two asterisks for <strong>strong emphasis</strong>.
Or, if you prefer, <strong>use two underscores instead</strong>.</p>
## Lists ##
Unordered (bulleted) lists use asterisks, pluses, and hyphens (`*`,
`+`, and `-`) as list markers. These three markers are
interchangable; this:
* Candy.
* Gum.
* Booze.
this:
+ Candy.
+ Gum.
+ Booze.
and this:
- Candy.
- Gum.
- Booze.
all produce the same output:
<ul>
<li>Candy.</li>
<li>Gum.</li>
<li>Booze.</li>
</ul>
Ordered (numbered) lists use regular numbers, followed by periods, as
list markers:
1. Red
2. Green
3. Blue
Output:
<ol>
<li>Red</li>
<li>Green</li>
<li>Blue</li>
</ol>
If you put blank lines between items, you'll get `<p>` tags for the
list item text. You can create multi-paragraph list items by indenting
the paragraphs by 4 spaces or 1 tab:
* A list item.
With multiple paragraphs.
* Another item in the list.
Output:
<ul>
<li><p>A list item.</p>
<p>With multiple paragraphs.</p></li>
<li><p>Another item in the list.</p></li>
</ul>
### Links ###
Markdown supports two styles for creating links: *inline* and
*reference*. With both styles, you use square brackets to delimit the
text you want to turn into a link.
Inline-style links use parentheses immediately after the link text.
For example:
This is an [example link](http://example.com/).
Output:
<p>This is an <a href="http://example.com/">
example link</a>.</p>
Optionally, you may include a title attribute in the parentheses:
This is an [example link](http://example.com/ "With a Title").
Output:
<p>This is an <a href="http://example.com/" title="With a Title">
example link</a>.</p>
Reference-style links allow you to refer to your links by names, which
you define elsewhere in your document:
I get 10 times more traffic from [Google][1] than from
[Yahoo][2] or [MSN][3].
[1]: http://google.com/ "Google"
[2]: http://search.yahoo.com/ "Yahoo Search"
[3]: http://search.msn.com/ "MSN Search"
Output:
<p>I get 10 times more traffic from <a href="http://google.com/"
title="Google">Google</a> than from <a href="http://search.yahoo.com/"
title="Yahoo Search">Yahoo</a> or <a href="http://search.msn.com/"
title="MSN Search">MSN</a>.</p>
The title attribute is optional. Link names may contain letters,
numbers and spaces, but are *not* case sensitive:
I start my morning with a cup of coffee and
[The New York Times][NY Times].
[ny times]: http://www.nytimes.com/
Output:
<p>I start my morning with a cup of coffee and
<a href="http://www.nytimes.com/">The New York Times</a>.</p>
### Images ###
Image syntax is very much like link syntax.
Inline (titles are optional):
![alt text](/path/to/img.jpg "Title")
Reference-style:
![alt text][id]
[id]: /path/to/img.jpg "Title"
Both of the above examples produce the same output:
<img src="/path/to/img.jpg" alt="alt text" title="Title" />
### Code ###
In a regular paragraph, you can create code span by wrapping text in
backtick quotes. Any ampersands (`&`) and angle brackets (`<` or
`>`) will automatically be translated into HTML entities. This makes
it easy to use Markdown to write about HTML example code:
I strongly recommend against using any `<blink>` tags.
I wish SmartyPants used named entities like `&mdash;`
instead of decimal-encoded entites like `&#8212;`.
Output:
<p>I strongly recommend against using any
<code>&lt;blink&gt;</code> tags.</p>
<p>I wish SmartyPants used named entities like
<code>&amp;mdash;</code> instead of decimal-encoded
entites like <code>&amp;#8212;</code>.</p>
To specify an entire block of pre-formatted code, indent every line of
the block by 4 spaces or 1 tab. Just like with code spans, `&`, `<`,
and `>` characters will be escaped automatically.
Markdown:
If you want your page to validate under XHTML 1.0 Strict,
you've got to put paragraph tags in your blockquotes:
<blockquote>
<p>For example.</p>
</blockquote>
Output:
<p>If you want your page to validate under XHTML 1.0 Strict,
you've got to put paragraph tags in your blockquotes:</p>
<pre><code>&lt;blockquote&gt;
&lt;p&gt;For example.&lt;/p&gt;
&lt;/blockquote&gt;
</code></pre>

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<h1>Markdown: Syntax</h1>
<ul id="ProjectSubmenu">
<li><a href="/projects/markdown/" title="Markdown Project Page">Main</a></li>
<li><a href="/projects/markdown/basics" title="Markdown Basics">Basics</a></li>
<li><a class="selected" title="Markdown Syntax Documentation">Syntax</a></li>
<li><a href="/projects/markdown/license" title="Pricing and License Information">License</a></li>
<li><a href="/projects/markdown/dingus" title="Online Markdown Web Form">Dingus</a></li>
</ul>
<ul>
<li><a href="#overview">Overview</a>
<ul>
<li><a href="#philosophy">Philosophy</a></li>
<li><a href="#html">Inline HTML</a></li>
<li><a href="#autoescape">Automatic Escaping for Special Characters</a></li>
</ul></li>
<li><a href="#block">Block Elements</a>
<ul>
<li><a href="#p">Paragraphs and Line Breaks</a></li>
<li><a href="#header">Headers</a></li>
<li><a href="#blockquote">Blockquotes</a></li>
<li><a href="#list">Lists</a></li>
<li><a href="#precode">Code Blocks</a></li>
<li><a href="#hr">Horizontal Rules</a></li>
</ul></li>
<li><a href="#span">Span Elements</a>
<ul>
<li><a href="#link">Links</a></li>
<li><a href="#em">Emphasis</a></li>
<li><a href="#code">Code</a></li>
<li><a href="#img">Images</a></li>
</ul></li>
<li><a href="#misc">Miscellaneous</a>
<ul>
<li><a href="#backslash">Backslash Escapes</a></li>
<li><a href="#autolink">Automatic Links</a></li>
</ul></li>
</ul>
<p><strong>Note:</strong> This document is itself written using Markdown; you
can <a href="/projects/markdown/syntax.text">see the source for it by adding '.text' to the URL</a>.</p>
<hr>
<h2 id="overview">Overview</h2>
<h3 id="philosophy">Philosophy</h3>
<p>Markdown is intended to be as easy-to-read and easy-to-write as is feasible.</p>
<p>Readability, however, is emphasized above all else. A Markdown-formatted
document should be publishable as-is, as plain text, without looking
like it's been marked up with tags or formatting instructions. While
Markdown's syntax has been influenced by several existing text-to-HTML
filters -- including <a href="http://docutils.sourceforge.net/mirror/setext.html">Setext</a>, <a href="http://www.aaronsw.com/2002/atx/">atx</a>, <a href="http://textism.com/tools/textile/">Textile</a>, <a href="http://docutils.sourceforge.net/rst.html">reStructuredText</a>,
<a href="http://www.triptico.com/software/grutatxt.html">Grutatext</a>, and <a href="http://ettext.taint.org/doc/">EtText</a> -- the single biggest source of
inspiration for Markdown's syntax is the format of plain text email.</p>
<p>To this end, Markdown's syntax is comprised entirely of punctuation
characters, which punctuation characters have been carefully chosen so
as to look like what they mean. E.g., asterisks around a word actually
look like *emphasis*. Markdown lists look like, well, lists. Even
blockquotes look like quoted passages of text, assuming you've ever
used email.</p>
<h3 id="html">Inline HTML</h3>
<p>Markdown's syntax is intended for one purpose: to be used as a
format for <em>writing</em> for the web.</p>
<p>Markdown is not a replacement for HTML, or even close to it. Its
syntax is very small, corresponding only to a very small subset of
HTML tags. The idea is <em>not</em> to create a syntax that makes it easier
to insert HTML tags. In my opinion, HTML tags are already easy to
insert. The idea for Markdown is to make it easy to read, write, and
edit prose. HTML is a <em>publishing</em> format; Markdown is a <em>writing</em>
format. Thus, Markdown's formatting syntax only addresses issues that
can be conveyed in plain text.</p>
<p>For any markup that is not covered by Markdown's syntax, you simply
use HTML itself. There's no need to preface it or delimit it to
indicate that you're switching from Markdown to HTML; you just use
the tags.</p>
<p>The only restrictions are that block-level HTML elements -- e.g. <code>&lt;div&gt;</code>,
<code>&lt;table&gt;</code>, <code>&lt;pre&gt;</code>, <code>&lt;p&gt;</code>, etc. -- must be separated from surrounding
content by blank lines, and the start and end tags of the block should
not be indented with tabs or spaces. Markdown is smart enough not
to add extra (unwanted) <code>&lt;p&gt;</code> tags around HTML block-level tags.</p>
<p>For example, to add an HTML table to a Markdown article:</p>
<pre><code>This is a regular paragraph.
&lt;table&gt;
&lt;tr&gt;
&lt;td&gt;Foo&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
This is another regular paragraph.
</code></pre>
<p>Note that Markdown formatting syntax is not processed within block-level
HTML tags. E.g., you can't use Markdown-style <code>*emphasis*</code> inside an
HTML block.</p>
<p>Span-level HTML tags -- e.g. <code>&lt;span&gt;</code>, <code>&lt;cite&gt;</code>, or <code>&lt;del&gt;</code> -- can be
used anywhere in a Markdown paragraph, list item, or header. If you
want, you can even use HTML tags instead of Markdown formatting; e.g. if
you'd prefer to use HTML <code>&lt;a&gt;</code> or <code>&lt;img&gt;</code> tags instead of Markdown's
link or image syntax, go right ahead.</p>
<p>Unlike block-level HTML tags, Markdown syntax <em>is</em> processed within
span-level tags.</p>
<h3 id="autoescape">Automatic Escaping for Special Characters</h3>
<p>In HTML, there are two characters that demand special treatment: <code>&lt;</code>
and <code>&amp;</code>. Left angle brackets are used to start tags; ampersands are
used to denote HTML entities. If you want to use them as literal
characters, you must escape them as entities, e.g. <code>&amp;lt;</code>, and
<code>&amp;amp;</code>.</p>
<p>Ampersands in particular are bedeviling for web writers. If you want to
write about 'AT&amp;T', you need to write '<code>AT&amp;amp;T</code>'. You even need to
escape ampersands within URLs. Thus, if you want to link to:</p>
<pre><code>http://images.google.com/images?num=30&amp;q=larry+bird
</code></pre>
<p>you need to encode the URL as:</p>
<pre><code>http://images.google.com/images?num=30&amp;amp;q=larry+bird
</code></pre>
<p>in your anchor tag <code>href</code> attribute. Needless to say, this is easy to
forget, and is probably the single most common source of HTML validation
errors in otherwise well-marked-up web sites.</p>
<p>Markdown allows you to use these characters naturally, taking care of
all the necessary escaping for you. If you use an ampersand as part of
an HTML entity, it remains unchanged; otherwise it will be translated
into <code>&amp;amp;</code>.</p>
<p>So, if you want to include a copyright symbol in your article, you can write:</p>
<pre><code>&amp;copy;
</code></pre>
<p>and Markdown will leave it alone. But if you write:</p>
<pre><code>AT&amp;T
</code></pre>
<p>Markdown will translate it to:</p>
<pre><code>AT&amp;amp;T
</code></pre>
<p>Similarly, because Markdown supports <a href="#html">inline HTML</a>, if you use
angle brackets as delimiters for HTML tags, Markdown will treat them as
such. But if you write:</p>
<pre><code>4 &lt; 5
</code></pre>
<p>Markdown will translate it to:</p>
<pre><code>4 &amp;lt; 5
</code></pre>
<p>However, inside Markdown code spans and blocks, angle brackets and
ampersands are <em>always</em> encoded automatically. This makes it easy to use
Markdown to write about HTML code. (As opposed to raw HTML, which is a
terrible format for writing about HTML syntax, because every single <code>&lt;</code>
and <code>&amp;</code> in your example code needs to be escaped.)</p>
<hr>
<h2 id="block">Block Elements</h2>
<h3 id="p">Paragraphs and Line Breaks</h3>
<p>A paragraph is simply one or more consecutive lines of text, separated
by one or more blank lines. (A blank line is any line that looks like a
blank line -- a line containing nothing but spaces or tabs is considered
blank.) Normal paragraphs should not be intended with spaces or tabs.</p>
<p>The implication of the &quot;one or more consecutive lines of text&quot; rule is
that Markdown supports &quot;hard-wrapped&quot; text paragraphs. This differs
significantly from most other text-to-HTML formatters (including Movable
Type's &quot;Convert Line Breaks&quot; option) which translate every line break
character in a paragraph into a <code>&lt;br /&gt;</code> tag.</p>
<p>When you <em>do</em> want to insert a <code>&lt;br /&gt;</code> break tag using Markdown, you
end a line with two or more spaces, then type return.</p>
<p>Yes, this takes a tad more effort to create a <code>&lt;br /&gt;</code>, but a simplistic
&quot;every line break is a <code>&lt;br /&gt;</code>&quot; rule wouldn't work for Markdown.
Markdown's email-style <a href="#blockquote">blockquoting</a> and multi-paragraph <a href="#list">list items</a>
work best -- and look better -- when you format them with hard breaks.</p>
<h3 id="header">Headers</h3>
<p>Markdown supports two styles of headers, <a href="http://docutils.sourceforge.net/mirror/setext.html">Setext</a> and <a href="http://www.aaronsw.com/2002/atx/">atx</a>.</p>
<p>Setext-style headers are &quot;underlined&quot; using equal signs (for first-level
headers) and dashes (for second-level headers). For example:</p>
<pre><code>This is an H1
=============
This is an H2
-------------
</code></pre>
<p>Any number of underlining <code>=</code>'s or <code>-</code>'s will work.</p>
<p>Atx-style headers use 1-6 hash characters at the start of the line,
corresponding to header levels 1-6. For example:</p>
<pre><code># This is an H1
## This is an H2
###### This is an H6
</code></pre>
<p>Optionally, you may &quot;close&quot; atx-style headers. This is purely
cosmetic -- you can use this if you think it looks better. The
closing hashes don't even need to match the number of hashes
used to open the header. (The number of opening hashes
determines the header level.) :</p>
<pre><code># This is an H1 #
## This is an H2 ##
### This is an H3 ######
</code></pre>
<h3 id="blockquote">Blockquotes</h3>
<p>Markdown uses email-style <code>&gt;</code> characters for blockquoting. If you're
familiar with quoting passages of text in an email message, then you
know how to create a blockquote in Markdown. It looks best if you hard
wrap the text and put a <code>&gt;</code> before every line:</p>
<pre><code>&gt; This is a blockquote with two paragraphs. Lorem ipsum dolor sit amet,
&gt; consectetuer adipiscing elit. Aliquam hendrerit mi posuere lectus.
&gt; Vestibulum enim wisi, viverra nec, fringilla in, laoreet vitae, risus.
&gt;
&gt; Donec sit amet nisl. Aliquam semper ipsum sit amet velit. Suspendisse
&gt; id sem consectetuer libero luctus adipiscing.
</code></pre>
<p>Markdown allows you to be lazy and only put the <code>&gt;</code> before the first
line of a hard-wrapped paragraph:</p>
<pre><code>&gt; This is a blockquote with two paragraphs. Lorem ipsum dolor sit amet,
consectetuer adipiscing elit. Aliquam hendrerit mi posuere lectus.
Vestibulum enim wisi, viverra nec, fringilla in, laoreet vitae, risus.
&gt; Donec sit amet nisl. Aliquam semper ipsum sit amet velit. Suspendisse
id sem consectetuer libero luctus adipiscing.
</code></pre>
<p>Blockquotes can be nested (i.e. a blockquote-in-a-blockquote) by
adding additional levels of <code>&gt;</code>:</p>
<pre><code>&gt; This is the first level of quoting.
&gt;
&gt; &gt; This is nested blockquote.
&gt;
&gt; Back to the first level.
</code></pre>
<p>Blockquotes can contain other Markdown elements, including headers, lists,
and code blocks:</p>
<pre><code>&gt; ## This is a header.
&gt;
&gt; 1. This is the first list item.
&gt; 2. This is the second list item.
&gt;
&gt; Here's some example code:
&gt;
&gt; return shell_exec(&quot;echo $input | $markdown_script&quot;);
</code></pre>
<p>Any decent text editor should make email-style quoting easy. For
example, with BBEdit, you can make a selection and choose Increase
Quote Level from the Text menu.</p>
<h3 id="list">Lists</h3>
<p>Markdown supports ordered (numbered) and unordered (bulleted) lists.</p>
<p>Unordered lists use asterisks, pluses, and hyphens -- interchangably
-- as list markers:</p>
<pre><code>* Red
* Green
* Blue
</code></pre>
<p>is equivalent to:</p>
<pre><code>+ Red
+ Green
+ Blue
</code></pre>
<p>and:</p>
<pre><code>- Red
- Green
- Blue
</code></pre>
<p>Ordered lists use numbers followed by periods:</p>
<pre><code>1. Bird
2. McHale
3. Parish
</code></pre>
<p>It's important to note that the actual numbers you use to mark the
list have no effect on the HTML output Markdown produces. The HTML
Markdown produces from the above list is:</p>
<pre><code>&lt;ol&gt;
&lt;li&gt;Bird&lt;/li&gt;
&lt;li&gt;McHale&lt;/li&gt;
&lt;li&gt;Parish&lt;/li&gt;
&lt;/ol&gt;
</code></pre>
<p>If you instead wrote the list in Markdown like this:</p>
<pre><code>1. Bird
1. McHale
1. Parish
</code></pre>
<p>or even:</p>
<pre><code>3. Bird
1. McHale
8. Parish
</code></pre>
<p>you'd get the exact same HTML output. The point is, if you want to,
you can use ordinal numbers in your ordered Markdown lists, so that
the numbers in your source match the numbers in your published HTML.
But if you want to be lazy, you don't have to.</p>
<p>If you do use lazy list numbering, however, you should still start the
list with the number 1. At some point in the future, Markdown may support
starting ordered lists at an arbitrary number.</p>
<p>List markers typically start at the left margin, but may be indented by
up to three spaces. List markers must be followed by one or more spaces
or a tab.</p>
<p>To make lists look nice, you can wrap items with hanging indents:</p>
<pre><code>* Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
Aliquam hendrerit mi posuere lectus. Vestibulum enim wisi,
viverra nec, fringilla in, laoreet vitae, risus.
* Donec sit amet nisl. Aliquam semper ipsum sit amet velit.
Suspendisse id sem consectetuer libero luctus adipiscing.
</code></pre>
<p>But if you want to be lazy, you don't have to:</p>
<pre><code>* Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
Aliquam hendrerit mi posuere lectus. Vestibulum enim wisi,
viverra nec, fringilla in, laoreet vitae, risus.
* Donec sit amet nisl. Aliquam semper ipsum sit amet velit.
Suspendisse id sem consectetuer libero luctus adipiscing.
</code></pre>
<p>If list items are separated by blank lines, Markdown will wrap the
items in <code>&lt;p&gt;</code> tags in the HTML output. For example, this input:</p>
<pre><code>* Bird
* Magic
</code></pre>
<p>will turn into:</p>
<pre><code>&lt;ul&gt;
&lt;li&gt;Bird&lt;/li&gt;
&lt;li&gt;Magic&lt;/li&gt;
&lt;/ul&gt;
</code></pre>
<p>But this:</p>
<pre><code>* Bird
* Magic
</code></pre>
<p>will turn into:</p>
<pre><code>&lt;ul&gt;
&lt;li&gt;&lt;p&gt;Bird&lt;/p&gt;&lt;/li&gt;
&lt;li&gt;&lt;p&gt;Magic&lt;/p&gt;&lt;/li&gt;
&lt;/ul&gt;
</code></pre>
<p>List items may consist of multiple paragraphs. Each subsequent
paragraph in a list item must be intended by either 4 spaces
or one tab:</p>
<pre><code>1. This is a list item with two paragraphs. Lorem ipsum dolor
sit amet, consectetuer adipiscing elit. Aliquam hendrerit
mi posuere lectus.
Vestibulum enim wisi, viverra nec, fringilla in, laoreet
vitae, risus. Donec sit amet nisl. Aliquam semper ipsum
sit amet velit.
2. Suspendisse id sem consectetuer libero luctus adipiscing.
</code></pre>
<p>It looks nice if you indent every line of the subsequent
paragraphs, but here again, Markdown will allow you to be
lazy:</p>
<pre><code>* This is a list item with two paragraphs.
This is the second paragraph in the list item. You're
only required to indent the first line. Lorem ipsum dolor
sit amet, consectetuer adipiscing elit.
* Another item in the same list.
</code></pre>
<p>To put a blockquote within a list item, the blockquote's <code>&gt;</code>
delimiters need to be indented:</p>
<pre><code>* A list item with a blockquote:
&gt; This is a blockquote
&gt; inside a list item.
</code></pre>
<p>To put a code block within a list item, the code block needs
to be indented <em>twice</em> -- 8 spaces or two tabs:</p>
<pre><code>* A list item with a code block:
&lt;code goes here&gt;
</code></pre>
<p>It's worth noting that it's possible to trigger an ordered list by
accident, by writing something like this:</p>
<pre><code>1986. What a great season.
</code></pre>
<p>In other words, a <em>number-period-space</em> sequence at the beginning of a
line. To avoid this, you can backslash-escape the period:</p>
<pre><code>1986\. What a great season.
</code></pre>
<h3 id="precode">Code Blocks</h3>
<p>Pre-formatted code blocks are used for writing about programming or
markup source code. Rather than forming normal paragraphs, the lines
of a code block are interpreted literally. Markdown wraps a code block
in both <code>&lt;pre&gt;</code> and <code>&lt;code&gt;</code> tags.</p>
<p>To produce a code block in Markdown, simply indent every line of the
block by at least 4 spaces or 1 tab. For example, given this input:</p>
<pre><code>This is a normal paragraph:
This is a code block.
</code></pre>
<p>Markdown will generate:</p>
<pre><code>&lt;p&gt;This is a normal paragraph:&lt;/p&gt;
&lt;pre&gt;&lt;code&gt;This is a code block.
&lt;/code&gt;&lt;/pre&gt;
</code></pre>
<p>One level of indentation -- 4 spaces or 1 tab -- is removed from each
line of the code block. For example, this:</p>
<pre><code>Here is an example of AppleScript:
tell application &quot;Foo&quot;
beep
end tell
</code></pre>
<p>will turn into:</p>
<pre><code>&lt;p&gt;Here is an example of AppleScript:&lt;/p&gt;
&lt;pre&gt;&lt;code&gt;tell application &quot;Foo&quot;
beep
end tell
&lt;/code&gt;&lt;/pre&gt;
</code></pre>
<p>A code block continues until it reaches a line that is not indented
(or the end of the article).</p>
<p>Within a code block, ampersands (<code>&amp;</code>) and angle brackets (<code>&lt;</code> and <code>&gt;</code>)
are automatically converted into HTML entities. This makes it very
easy to include example HTML source code using Markdown -- just paste
it and indent it, and Markdown will handle the hassle of encoding the
ampersands and angle brackets. For example, this:</p>
<pre><code> &lt;div class=&quot;footer&quot;&gt;
&amp;copy; 2004 Foo Corporation
&lt;/div&gt;
</code></pre>
<p>will turn into:</p>
<pre><code>&lt;pre&gt;&lt;code&gt;&amp;lt;div class=&quot;footer&quot;&amp;gt;
&amp;amp;copy; 2004 Foo Corporation
&amp;lt;/div&amp;gt;
&lt;/code&gt;&lt;/pre&gt;
</code></pre>
<p>Regular Markdown syntax is not processed within code blocks. E.g.,
asterisks are just literal asterisks within a code block. This means
it's also easy to use Markdown to write about Markdown's own syntax.</p>
<h3 id="hr">Horizontal Rules</h3>
<p>You can produce a horizontal rule tag (<code>&lt;hr /&gt;</code>) by placing three or
more hyphens, asterisks, or underscores on a line by themselves. If you
wish, you may use spaces between the hyphens or asterisks. Each of the
following lines will produce a horizontal rule:</p>
<pre><code>* * *
***
*****
- - -
---------------------------------------
_ _ _
</code></pre>
<hr>
<h2 id="span">Span Elements</h2>
<h3 id="link">Links</h3>
<p>Markdown supports two style of links: <em>inline</em> and <em>reference</em>.</p>
<p>In both styles, the link text is delimited by [square brackets].</p>
<p>To create an inline link, use a set of regular parentheses immediately
after the link text's closing square bracket. Inside the parentheses,
put the URL where you want the link to point, along with an <em>optional</em>
title for the link, surrounded in quotes. For example:</p>
<pre><code>This is [an example](http://example.com/ &quot;Title&quot;) inline link.
[This link](http://example.net/) has no title attribute.
</code></pre>
<p>Will produce:</p>
<pre><code>&lt;p&gt;This is &lt;a href=&quot;http://example.com/&quot; title=&quot;Title&quot;&gt;
an example&lt;/a&gt; inline link.&lt;/p&gt;
&lt;p&gt;&lt;a href=&quot;http://example.net/&quot;&gt;This link&lt;/a&gt; has no
title attribute.&lt;/p&gt;
</code></pre>
<p>If you're referring to a local resource on the same server, you can
use relative paths:</p>
<pre><code>See my [About](/about/) page for details.
</code></pre>
<p>Reference-style links use a second set of square brackets, inside
which you place a label of your choosing to identify the link:</p>
<pre><code>This is [an example][id] reference-style link.
</code></pre>
<p>You can optionally use a space to separate the sets of brackets:</p>
<pre><code>This is [an example] [id] reference-style link.
</code></pre>
<p>Then, anywhere in the document, you define your link label like this,
on a line by itself:</p>
<pre><code>[id]: http://example.com/ &quot;Optional Title Here&quot;
</code></pre>
<p>That is:</p>
<ul>
<li>Square brackets containing the link identifier (optionally
indented from the left margin using up to three spaces);</li>
<li>followed by a colon;</li>
<li>followed by one or more spaces (or tabs);</li>
<li>followed by the URL for the link;</li>
<li>optionally followed by a title attribute for the link, enclosed
in double or single quotes.</li>
</ul>
<p>The link URL may, optionally, be surrounded by angle brackets:</p>
<pre><code>[id]: &lt;http://example.com/&gt; &quot;Optional Title Here&quot;
</code></pre>
<p>You can put the title attribute on the next line and use extra spaces
or tabs for padding, which tends to look better with longer URLs:</p>
<pre><code>[id]: http://example.com/longish/path/to/resource/here
&quot;Optional Title Here&quot;
</code></pre>
<p>Link definitions are only used for creating links during Markdown
processing, and are stripped from your document in the HTML output.</p>
<p>Link definition names may constist of letters, numbers, spaces, and punctuation -- but they are <em>not</em> case sensitive. E.g. these two links:</p>
<pre><code>[link text][a]
[link text][A]
</code></pre>
<p>are equivalent.</p>
<p>The <em>implicit link name</em> shortcut allows you to omit the name of the
link, in which case the link text itself is used as the name.
Just use an empty set of square brackets -- e.g., to link the word
&quot;Google&quot; to the google.com web site, you could simply write:</p>
<pre><code>[Google][]
</code></pre>
<p>And then define the link:</p>
<pre><code>[Google]: http://google.com/
</code></pre>
<p>Because link names may contain spaces, this shortcut even works for
multiple words in the link text:</p>
<pre><code>Visit [Daring Fireball][] for more information.
</code></pre>
<p>And then define the link:</p>
<pre><code>[Daring Fireball]: http://daringfireball.net/
</code></pre>
<p>Link definitions can be placed anywhere in your Markdown document. I
tend to put them immediately after each paragraph in which they're
used, but if you want, you can put them all at the end of your
document, sort of like footnotes.</p>
<p>Here's an example of reference links in action:</p>
<pre><code>I get 10 times more traffic from [Google] [1] than from
[Yahoo] [2] or [MSN] [3].
[1]: http://google.com/ &quot;Google&quot;
[2]: http://search.yahoo.com/ &quot;Yahoo Search&quot;
[3]: http://search.msn.com/ &quot;MSN Search&quot;
</code></pre>
<p>Using the implicit link name shortcut, you could instead write:</p>
<pre><code>I get 10 times more traffic from [Google][] than from
[Yahoo][] or [MSN][].
[google]: http://google.com/ &quot;Google&quot;
[yahoo]: http://search.yahoo.com/ &quot;Yahoo Search&quot;
[msn]: http://search.msn.com/ &quot;MSN Search&quot;
</code></pre>
<p>Both of the above examples will produce the following HTML output:</p>
<pre><code>&lt;p&gt;I get 10 times more traffic from &lt;a href=&quot;http://google.com/&quot;
title=&quot;Google&quot;&gt;Google&lt;/a&gt; than from
&lt;a href=&quot;http://search.yahoo.com/&quot; title=&quot;Yahoo Search&quot;&gt;Yahoo&lt;/a&gt;
or &lt;a href=&quot;http://search.msn.com/&quot; title=&quot;MSN Search&quot;&gt;MSN&lt;/a&gt;.&lt;/p&gt;
</code></pre>
<p>For comparison, here is the same paragraph written using
Markdown's inline link style:</p>
<pre><code>I get 10 times more traffic from [Google](http://google.com/ &quot;Google&quot;)
than from [Yahoo](http://search.yahoo.com/ &quot;Yahoo Search&quot;) or
[MSN](http://search.msn.com/ &quot;MSN Search&quot;).
</code></pre>
<p>The point of reference-style links is not that they're easier to
write. The point is that with reference-style links, your document
source is vastly more readable. Compare the above examples: using
reference-style links, the paragraph itself is only 81 characters
long; with inline-style links, it's 176 characters; and as raw HTML,
it's 234 characters. In the raw HTML, there's more markup than there
is text.</p>
<p>With Markdown's reference-style links, a source document much more
closely resembles the final output, as rendered in a browser. By
allowing you to move the markup-related metadata out of the paragraph,
you can add links without interrupting the narrative flow of your
prose.</p>
<h3 id="em">Emphasis</h3>
<p>Markdown treats asterisks (<code>*</code>) and underscores (<code>_</code>) as indicators of
emphasis. Text wrapped with one <code>*</code> or <code>_</code> will be wrapped with an
HTML <code>&lt;em&gt;</code> tag; double <code>*</code>'s or <code>_</code>'s will be wrapped with an HTML
<code>&lt;strong&gt;</code> tag. E.g., this input:</p>
<pre><code>*single asterisks*
_single underscores_
**double asterisks**
__double underscores__
</code></pre>
<p>will produce:</p>
<pre><code>&lt;em&gt;single asterisks&lt;/em&gt;
&lt;em&gt;single underscores&lt;/em&gt;
&lt;strong&gt;double asterisks&lt;/strong&gt;
&lt;strong&gt;double underscores&lt;/strong&gt;
</code></pre>
<p>You can use whichever style you prefer; the lone restriction is that
the same character must be used to open and close an emphasis span.</p>
<p>Emphasis can be used in the middle of a word:</p>
<pre><code>un*fucking*believable
</code></pre>
<p>But if you surround an <code>*</code> or <code>_</code> with spaces, it'll be treated as a
literal asterisk or underscore.</p>
<p>To produce a literal asterisk or underscore at a position where it
would otherwise be used as an emphasis delimiter, you can backslash
escape it:</p>
<pre><code>\*this text is surrounded by literal asterisks\*
</code></pre>
<h3 id="code">Code</h3>
<p>To indicate a span of code, wrap it with backtick quotes (<code>`</code>).
Unlike a pre-formatted code block, a code span indicates code within a
normal paragraph. For example:</p>
<pre><code>Use the `printf()` function.
</code></pre>
<p>will produce:</p>
<pre><code>&lt;p&gt;Use the &lt;code&gt;printf()&lt;/code&gt; function.&lt;/p&gt;
</code></pre>
<p>To include a literal backtick character within a code span, you can use
multiple backticks as the opening and closing delimiters:</p>
<pre><code>``There is a literal backtick (`) here.``
</code></pre>
<p>which will produce this:</p>
<pre><code>&lt;p&gt;&lt;code&gt;There is a literal backtick (`) here.&lt;/code&gt;&lt;/p&gt;
</code></pre>
<p>The backtick delimiters surrounding a code span may include spaces --
one after the opening, one before the closing. This allows you to place
literal backtick characters at the beginning or end of a code span:</p>
<pre><code>A single backtick in a code span: `` ` ``
A backtick-delimited string in a code span: `` `foo` ``
</code></pre>
<p>will produce:</p>
<pre><code>&lt;p&gt;A single backtick in a code span: &lt;code&gt;`&lt;/code&gt;&lt;/p&gt;
&lt;p&gt;A backtick-delimited string in a code span: &lt;code&gt;`foo`&lt;/code&gt;&lt;/p&gt;
</code></pre>
<p>With a code span, ampersands and angle brackets are encoded as HTML
entities automatically, which makes it easy to include example HTML
tags. Markdown will turn this:</p>
<pre><code>Please don't use any `&lt;blink&gt;` tags.
</code></pre>
<p>into:</p>
<pre><code>&lt;p&gt;Please don't use any &lt;code&gt;&amp;lt;blink&amp;gt;&lt;/code&gt; tags.&lt;/p&gt;
</code></pre>
<p>You can write this:</p>
<pre><code>`&amp;#8212;` is the decimal-encoded equivalent of `&amp;mdash;`.
</code></pre>
<p>to produce:</p>
<pre><code>&lt;p&gt;&lt;code&gt;&amp;amp;#8212;&lt;/code&gt; is the decimal-encoded
equivalent of &lt;code&gt;&amp;amp;mdash;&lt;/code&gt;.&lt;/p&gt;
</code></pre>
<h3 id="img">Images</h3>
<p>Admittedly, it's fairly difficult to devise a &quot;natural&quot; syntax for
placing images into a plain text document format.</p>
<p>Markdown uses an image syntax that is intended to resemble the syntax
for links, allowing for two styles: <em>inline</em> and <em>reference</em>.</p>
<p>Inline image syntax looks like this:</p>
<pre><code>![Alt text](/path/to/img.jpg)
![Alt text](/path/to/img.jpg &quot;Optional title&quot;)
</code></pre>
<p>That is:</p>
<ul>
<li>An exclamation mark: <code>!</code>;</li>
<li>followed by a set of square brackets, containing the <code>alt</code>
attribute text for the image;</li>
<li>followed by a set of parentheses, containing the URL or path to
the image, and an optional <code>title</code> attribute enclosed in double
or single quotes.</li>
</ul>
<p>Reference-style image syntax looks like this:</p>
<pre><code>![Alt text][id]
</code></pre>
<p>Where &quot;id&quot; is the name of a defined image reference. Image references
are defined using syntax identical to link references:</p>
<pre><code>[id]: url/to/image &quot;Optional title attribute&quot;
</code></pre>
<p>As of this writing, Markdown has no syntax for specifying the
dimensions of an image; if this is important to you, you can simply
use regular HTML <code>&lt;img&gt;</code> tags.</p>
<hr>
<h2 id="misc">Miscellaneous</h2>
<h3 id="autolink">Automatic Links</h3>
<p>Markdown supports a shortcut style for creating &quot;automatic&quot; links for URLs and email addresses: simply surround the URL or email address with angle brackets. What this means is that if you want to show the actual text of a URL or email address, and also have it be a clickable link, you can do this:</p>
<pre><code>&lt;http://example.com/&gt;
</code></pre>
<p>Markdown will turn this into:</p>
<pre><code>&lt;a href=&quot;http://example.com/&quot;&gt;http://example.com/&lt;/a&gt;
</code></pre>
<p>Automatic links for email addresses work similarly, except that
Markdown will also perform a bit of randomized decimal and hex
entity-encoding to help obscure your address from address-harvesting
spambots. For example, Markdown will turn this:</p>
<pre><code>&lt;address@example.com&gt;
</code></pre>
<p>into something like this:</p>
<pre><code>&lt;a href=&quot;&amp;#x6D;&amp;#x61;i&amp;#x6C;&amp;#x74;&amp;#x6F;:&amp;#x61;&amp;#x64;&amp;#x64;&amp;#x72;&amp;#x65;
&amp;#115;&amp;#115;&amp;#64;&amp;#101;&amp;#120;&amp;#x61;&amp;#109;&amp;#x70;&amp;#x6C;e&amp;#x2E;&amp;#99;&amp;#111;
&amp;#109;&quot;&gt;&amp;#x61;&amp;#x64;&amp;#x64;&amp;#x72;&amp;#x65;&amp;#115;&amp;#115;&amp;#64;&amp;#101;&amp;#120;&amp;#x61;
&amp;#109;&amp;#x70;&amp;#x6C;e&amp;#x2E;&amp;#99;&amp;#111;&amp;#109;&lt;/a&gt;
</code></pre>
<p>which will render in a browser as a clickable link to &quot;address@example.com&quot;.</p>
<p>(This sort of entity-encoding trick will indeed fool many, if not
most, address-harvesting bots, but it definitely won't fool all of
them. It's better than nothing, but an address published in this way
will probably eventually start receiving spam.)</p>
<h3 id="backslash">Backslash Escapes</h3>
<p>Markdown allows you to use backslash escapes to generate literal
characters which would otherwise have special meaning in Markdown's
formatting syntax. For example, if you wanted to surround a word with
literal asterisks (instead of an HTML <code>&lt;em&gt;</code> tag), you can backslashes
before the asterisks, like this:</p>
<pre><code>\*literal asterisks\*
</code></pre>
<p>Markdown provides backslash escapes for the following characters:</p>
<pre><code>\ backslash
` backtick
* asterisk
_ underscore
{} curly braces
[] square brackets
() parentheses
# hash mark
+ plus sign
- minus sign (hyphen)
. dot
! exclamation mark
</code></pre>

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@ -0,0 +1,888 @@
Markdown: Syntax
================
<ul id="ProjectSubmenu">
<li><a href="/projects/markdown/" title="Markdown Project Page">Main</a></li>
<li><a href="/projects/markdown/basics" title="Markdown Basics">Basics</a></li>
<li><a class="selected" title="Markdown Syntax Documentation">Syntax</a></li>
<li><a href="/projects/markdown/license" title="Pricing and License Information">License</a></li>
<li><a href="/projects/markdown/dingus" title="Online Markdown Web Form">Dingus</a></li>
</ul>
* [Overview](#overview)
* [Philosophy](#philosophy)
* [Inline HTML](#html)
* [Automatic Escaping for Special Characters](#autoescape)
* [Block Elements](#block)
* [Paragraphs and Line Breaks](#p)
* [Headers](#header)
* [Blockquotes](#blockquote)
* [Lists](#list)
* [Code Blocks](#precode)
* [Horizontal Rules](#hr)
* [Span Elements](#span)
* [Links](#link)
* [Emphasis](#em)
* [Code](#code)
* [Images](#img)
* [Miscellaneous](#misc)
* [Backslash Escapes](#backslash)
* [Automatic Links](#autolink)
**Note:** This document is itself written using Markdown; you
can [see the source for it by adding '.text' to the URL][src].
[src]: /projects/markdown/syntax.text
* * *
<h2 id="overview">Overview</h2>
<h3 id="philosophy">Philosophy</h3>
Markdown is intended to be as easy-to-read and easy-to-write as is feasible.
Readability, however, is emphasized above all else. A Markdown-formatted
document should be publishable as-is, as plain text, without looking
like it's been marked up with tags or formatting instructions. While
Markdown's syntax has been influenced by several existing text-to-HTML
filters -- including [Setext] [1], [atx] [2], [Textile] [3], [reStructuredText] [4],
[Grutatext] [5], and [EtText] [6] -- the single biggest source of
inspiration for Markdown's syntax is the format of plain text email.
[1]: http://docutils.sourceforge.net/mirror/setext.html
[2]: http://www.aaronsw.com/2002/atx/
[3]: http://textism.com/tools/textile/
[4]: http://docutils.sourceforge.net/rst.html
[5]: http://www.triptico.com/software/grutatxt.html
[6]: http://ettext.taint.org/doc/
To this end, Markdown's syntax is comprised entirely of punctuation
characters, which punctuation characters have been carefully chosen so
as to look like what they mean. E.g., asterisks around a word actually
look like \*emphasis\*. Markdown lists look like, well, lists. Even
blockquotes look like quoted passages of text, assuming you've ever
used email.
<h3 id="html">Inline HTML</h3>
Markdown's syntax is intended for one purpose: to be used as a
format for *writing* for the web.
Markdown is not a replacement for HTML, or even close to it. Its
syntax is very small, corresponding only to a very small subset of
HTML tags. The idea is *not* to create a syntax that makes it easier
to insert HTML tags. In my opinion, HTML tags are already easy to
insert. The idea for Markdown is to make it easy to read, write, and
edit prose. HTML is a *publishing* format; Markdown is a *writing*
format. Thus, Markdown's formatting syntax only addresses issues that
can be conveyed in plain text.
For any markup that is not covered by Markdown's syntax, you simply
use HTML itself. There's no need to preface it or delimit it to
indicate that you're switching from Markdown to HTML; you just use
the tags.
The only restrictions are that block-level HTML elements -- e.g. `<div>`,
`<table>`, `<pre>`, `<p>`, etc. -- must be separated from surrounding
content by blank lines, and the start and end tags of the block should
not be indented with tabs or spaces. Markdown is smart enough not
to add extra (unwanted) `<p>` tags around HTML block-level tags.
For example, to add an HTML table to a Markdown article:
This is a regular paragraph.
<table>
<tr>
<td>Foo</td>
</tr>
</table>
This is another regular paragraph.
Note that Markdown formatting syntax is not processed within block-level
HTML tags. E.g., you can't use Markdown-style `*emphasis*` inside an
HTML block.
Span-level HTML tags -- e.g. `<span>`, `<cite>`, or `<del>` -- can be
used anywhere in a Markdown paragraph, list item, or header. If you
want, you can even use HTML tags instead of Markdown formatting; e.g. if
you'd prefer to use HTML `<a>` or `<img>` tags instead of Markdown's
link or image syntax, go right ahead.
Unlike block-level HTML tags, Markdown syntax *is* processed within
span-level tags.
<h3 id="autoescape">Automatic Escaping for Special Characters</h3>
In HTML, there are two characters that demand special treatment: `<`
and `&`. Left angle brackets are used to start tags; ampersands are
used to denote HTML entities. If you want to use them as literal
characters, you must escape them as entities, e.g. `&lt;`, and
`&amp;`.
Ampersands in particular are bedeviling for web writers. If you want to
write about 'AT&T', you need to write '`AT&amp;T`'. You even need to
escape ampersands within URLs. Thus, if you want to link to:
http://images.google.com/images?num=30&q=larry+bird
you need to encode the URL as:
http://images.google.com/images?num=30&amp;q=larry+bird
in your anchor tag `href` attribute. Needless to say, this is easy to
forget, and is probably the single most common source of HTML validation
errors in otherwise well-marked-up web sites.
Markdown allows you to use these characters naturally, taking care of
all the necessary escaping for you. If you use an ampersand as part of
an HTML entity, it remains unchanged; otherwise it will be translated
into `&amp;`.
So, if you want to include a copyright symbol in your article, you can write:
&copy;
and Markdown will leave it alone. But if you write:
AT&T
Markdown will translate it to:
AT&amp;T
Similarly, because Markdown supports [inline HTML](#html), if you use
angle brackets as delimiters for HTML tags, Markdown will treat them as
such. But if you write:
4 < 5
Markdown will translate it to:
4 &lt; 5
However, inside Markdown code spans and blocks, angle brackets and
ampersands are *always* encoded automatically. This makes it easy to use
Markdown to write about HTML code. (As opposed to raw HTML, which is a
terrible format for writing about HTML syntax, because every single `<`
and `&` in your example code needs to be escaped.)
* * *
<h2 id="block">Block Elements</h2>
<h3 id="p">Paragraphs and Line Breaks</h3>
A paragraph is simply one or more consecutive lines of text, separated
by one or more blank lines. (A blank line is any line that looks like a
blank line -- a line containing nothing but spaces or tabs is considered
blank.) Normal paragraphs should not be intended with spaces or tabs.
The implication of the "one or more consecutive lines of text" rule is
that Markdown supports "hard-wrapped" text paragraphs. This differs
significantly from most other text-to-HTML formatters (including Movable
Type's "Convert Line Breaks" option) which translate every line break
character in a paragraph into a `<br />` tag.
When you *do* want to insert a `<br />` break tag using Markdown, you
end a line with two or more spaces, then type return.
Yes, this takes a tad more effort to create a `<br />`, but a simplistic
"every line break is a `<br />`" rule wouldn't work for Markdown.
Markdown's email-style [blockquoting][bq] and multi-paragraph [list items][l]
work best -- and look better -- when you format them with hard breaks.
[bq]: #blockquote
[l]: #list
<h3 id="header">Headers</h3>
Markdown supports two styles of headers, [Setext] [1] and [atx] [2].
Setext-style headers are "underlined" using equal signs (for first-level
headers) and dashes (for second-level headers). For example:
This is an H1
=============
This is an H2
-------------
Any number of underlining `=`'s or `-`'s will work.
Atx-style headers use 1-6 hash characters at the start of the line,
corresponding to header levels 1-6. For example:
# This is an H1
## This is an H2
###### This is an H6
Optionally, you may "close" atx-style headers. This is purely
cosmetic -- you can use this if you think it looks better. The
closing hashes don't even need to match the number of hashes
used to open the header. (The number of opening hashes
determines the header level.) :
# This is an H1 #
## This is an H2 ##
### This is an H3 ######
<h3 id="blockquote">Blockquotes</h3>
Markdown uses email-style `>` characters for blockquoting. If you're
familiar with quoting passages of text in an email message, then you
know how to create a blockquote in Markdown. It looks best if you hard
wrap the text and put a `>` before every line:
> This is a blockquote with two paragraphs. Lorem ipsum dolor sit amet,
> consectetuer adipiscing elit. Aliquam hendrerit mi posuere lectus.
> Vestibulum enim wisi, viverra nec, fringilla in, laoreet vitae, risus.
>
> Donec sit amet nisl. Aliquam semper ipsum sit amet velit. Suspendisse
> id sem consectetuer libero luctus adipiscing.
Markdown allows you to be lazy and only put the `>` before the first
line of a hard-wrapped paragraph:
> This is a blockquote with two paragraphs. Lorem ipsum dolor sit amet,
consectetuer adipiscing elit. Aliquam hendrerit mi posuere lectus.
Vestibulum enim wisi, viverra nec, fringilla in, laoreet vitae, risus.
> Donec sit amet nisl. Aliquam semper ipsum sit amet velit. Suspendisse
id sem consectetuer libero luctus adipiscing.
Blockquotes can be nested (i.e. a blockquote-in-a-blockquote) by
adding additional levels of `>`:
> This is the first level of quoting.
>
> > This is nested blockquote.
>
> Back to the first level.
Blockquotes can contain other Markdown elements, including headers, lists,
and code blocks:
> ## This is a header.
>
> 1. This is the first list item.
> 2. This is the second list item.
>
> Here's some example code:
>
> return shell_exec("echo $input | $markdown_script");
Any decent text editor should make email-style quoting easy. For
example, with BBEdit, you can make a selection and choose Increase
Quote Level from the Text menu.
<h3 id="list">Lists</h3>
Markdown supports ordered (numbered) and unordered (bulleted) lists.
Unordered lists use asterisks, pluses, and hyphens -- interchangably
-- as list markers:
* Red
* Green
* Blue
is equivalent to:
+ Red
+ Green
+ Blue
and:
- Red
- Green
- Blue
Ordered lists use numbers followed by periods:
1. Bird
2. McHale
3. Parish
It's important to note that the actual numbers you use to mark the
list have no effect on the HTML output Markdown produces. The HTML
Markdown produces from the above list is:
<ol>
<li>Bird</li>
<li>McHale</li>
<li>Parish</li>
</ol>
If you instead wrote the list in Markdown like this:
1. Bird
1. McHale
1. Parish
or even:
3. Bird
1. McHale
8. Parish
you'd get the exact same HTML output. The point is, if you want to,
you can use ordinal numbers in your ordered Markdown lists, so that
the numbers in your source match the numbers in your published HTML.
But if you want to be lazy, you don't have to.
If you do use lazy list numbering, however, you should still start the
list with the number 1. At some point in the future, Markdown may support
starting ordered lists at an arbitrary number.
List markers typically start at the left margin, but may be indented by
up to three spaces. List markers must be followed by one or more spaces
or a tab.
To make lists look nice, you can wrap items with hanging indents:
* Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
Aliquam hendrerit mi posuere lectus. Vestibulum enim wisi,
viverra nec, fringilla in, laoreet vitae, risus.
* Donec sit amet nisl. Aliquam semper ipsum sit amet velit.
Suspendisse id sem consectetuer libero luctus adipiscing.
But if you want to be lazy, you don't have to:
* Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
Aliquam hendrerit mi posuere lectus. Vestibulum enim wisi,
viverra nec, fringilla in, laoreet vitae, risus.
* Donec sit amet nisl. Aliquam semper ipsum sit amet velit.
Suspendisse id sem consectetuer libero luctus adipiscing.
If list items are separated by blank lines, Markdown will wrap the
items in `<p>` tags in the HTML output. For example, this input:
* Bird
* Magic
will turn into:
<ul>
<li>Bird</li>
<li>Magic</li>
</ul>
But this:
* Bird
* Magic
will turn into:
<ul>
<li><p>Bird</p></li>
<li><p>Magic</p></li>
</ul>
List items may consist of multiple paragraphs. Each subsequent
paragraph in a list item must be intended by either 4 spaces
or one tab:
1. This is a list item with two paragraphs. Lorem ipsum dolor
sit amet, consectetuer adipiscing elit. Aliquam hendrerit
mi posuere lectus.
Vestibulum enim wisi, viverra nec, fringilla in, laoreet
vitae, risus. Donec sit amet nisl. Aliquam semper ipsum
sit amet velit.
2. Suspendisse id sem consectetuer libero luctus adipiscing.
It looks nice if you indent every line of the subsequent
paragraphs, but here again, Markdown will allow you to be
lazy:
* This is a list item with two paragraphs.
This is the second paragraph in the list item. You're
only required to indent the first line. Lorem ipsum dolor
sit amet, consectetuer adipiscing elit.
* Another item in the same list.
To put a blockquote within a list item, the blockquote's `>`
delimiters need to be indented:
* A list item with a blockquote:
> This is a blockquote
> inside a list item.
To put a code block within a list item, the code block needs
to be indented *twice* -- 8 spaces or two tabs:
* A list item with a code block:
<code goes here>
It's worth noting that it's possible to trigger an ordered list by
accident, by writing something like this:
1986. What a great season.
In other words, a *number-period-space* sequence at the beginning of a
line. To avoid this, you can backslash-escape the period:
1986\. What a great season.
<h3 id="precode">Code Blocks</h3>
Pre-formatted code blocks are used for writing about programming or
markup source code. Rather than forming normal paragraphs, the lines
of a code block are interpreted literally. Markdown wraps a code block
in both `<pre>` and `<code>` tags.
To produce a code block in Markdown, simply indent every line of the
block by at least 4 spaces or 1 tab. For example, given this input:
This is a normal paragraph:
This is a code block.
Markdown will generate:
<p>This is a normal paragraph:</p>
<pre><code>This is a code block.
</code></pre>
One level of indentation -- 4 spaces or 1 tab -- is removed from each
line of the code block. For example, this:
Here is an example of AppleScript:
tell application "Foo"
beep
end tell
will turn into:
<p>Here is an example of AppleScript:</p>
<pre><code>tell application "Foo"
beep
end tell
</code></pre>
A code block continues until it reaches a line that is not indented
(or the end of the article).
Within a code block, ampersands (`&`) and angle brackets (`<` and `>`)
are automatically converted into HTML entities. This makes it very
easy to include example HTML source code using Markdown -- just paste
it and indent it, and Markdown will handle the hassle of encoding the
ampersands and angle brackets. For example, this:
<div class="footer">
&copy; 2004 Foo Corporation
</div>
will turn into:
<pre><code>&lt;div class="footer"&gt;
&amp;copy; 2004 Foo Corporation
&lt;/div&gt;
</code></pre>
Regular Markdown syntax is not processed within code blocks. E.g.,
asterisks are just literal asterisks within a code block. This means
it's also easy to use Markdown to write about Markdown's own syntax.
<h3 id="hr">Horizontal Rules</h3>
You can produce a horizontal rule tag (`<hr />`) by placing three or
more hyphens, asterisks, or underscores on a line by themselves. If you
wish, you may use spaces between the hyphens or asterisks. Each of the
following lines will produce a horizontal rule:
* * *
***
*****
- - -
---------------------------------------
_ _ _
* * *
<h2 id="span">Span Elements</h2>
<h3 id="link">Links</h3>
Markdown supports two style of links: *inline* and *reference*.
In both styles, the link text is delimited by [square brackets].
To create an inline link, use a set of regular parentheses immediately
after the link text's closing square bracket. Inside the parentheses,
put the URL where you want the link to point, along with an *optional*
title for the link, surrounded in quotes. For example:
This is [an example](http://example.com/ "Title") inline link.
[This link](http://example.net/) has no title attribute.
Will produce:
<p>This is <a href="http://example.com/" title="Title">
an example</a> inline link.</p>
<p><a href="http://example.net/">This link</a> has no
title attribute.</p>
If you're referring to a local resource on the same server, you can
use relative paths:
See my [About](/about/) page for details.
Reference-style links use a second set of square brackets, inside
which you place a label of your choosing to identify the link:
This is [an example][id] reference-style link.
You can optionally use a space to separate the sets of brackets:
This is [an example] [id] reference-style link.
Then, anywhere in the document, you define your link label like this,
on a line by itself:
[id]: http://example.com/ "Optional Title Here"
That is:
* Square brackets containing the link identifier (optionally
indented from the left margin using up to three spaces);
* followed by a colon;
* followed by one or more spaces (or tabs);
* followed by the URL for the link;
* optionally followed by a title attribute for the link, enclosed
in double or single quotes.
The link URL may, optionally, be surrounded by angle brackets:
[id]: <http://example.com/> "Optional Title Here"
You can put the title attribute on the next line and use extra spaces
or tabs for padding, which tends to look better with longer URLs:
[id]: http://example.com/longish/path/to/resource/here
"Optional Title Here"
Link definitions are only used for creating links during Markdown
processing, and are stripped from your document in the HTML output.
Link definition names may constist of letters, numbers, spaces, and punctuation -- but they are *not* case sensitive. E.g. these two links:
[link text][a]
[link text][A]
are equivalent.
The *implicit link name* shortcut allows you to omit the name of the
link, in which case the link text itself is used as the name.
Just use an empty set of square brackets -- e.g., to link the word
"Google" to the google.com web site, you could simply write:
[Google][]
And then define the link:
[Google]: http://google.com/
Because link names may contain spaces, this shortcut even works for
multiple words in the link text:
Visit [Daring Fireball][] for more information.
And then define the link:
[Daring Fireball]: http://daringfireball.net/
Link definitions can be placed anywhere in your Markdown document. I
tend to put them immediately after each paragraph in which they're
used, but if you want, you can put them all at the end of your
document, sort of like footnotes.
Here's an example of reference links in action:
I get 10 times more traffic from [Google] [1] than from
[Yahoo] [2] or [MSN] [3].
[1]: http://google.com/ "Google"
[2]: http://search.yahoo.com/ "Yahoo Search"
[3]: http://search.msn.com/ "MSN Search"
Using the implicit link name shortcut, you could instead write:
I get 10 times more traffic from [Google][] than from
[Yahoo][] or [MSN][].
[google]: http://google.com/ "Google"
[yahoo]: http://search.yahoo.com/ "Yahoo Search"
[msn]: http://search.msn.com/ "MSN Search"
Both of the above examples will produce the following HTML output:
<p>I get 10 times more traffic from <a href="http://google.com/"
title="Google">Google</a> than from
<a href="http://search.yahoo.com/" title="Yahoo Search">Yahoo</a>
or <a href="http://search.msn.com/" title="MSN Search">MSN</a>.</p>
For comparison, here is the same paragraph written using
Markdown's inline link style:
I get 10 times more traffic from [Google](http://google.com/ "Google")
than from [Yahoo](http://search.yahoo.com/ "Yahoo Search") or
[MSN](http://search.msn.com/ "MSN Search").
The point of reference-style links is not that they're easier to
write. The point is that with reference-style links, your document
source is vastly more readable. Compare the above examples: using
reference-style links, the paragraph itself is only 81 characters
long; with inline-style links, it's 176 characters; and as raw HTML,
it's 234 characters. In the raw HTML, there's more markup than there
is text.
With Markdown's reference-style links, a source document much more
closely resembles the final output, as rendered in a browser. By
allowing you to move the markup-related metadata out of the paragraph,
you can add links without interrupting the narrative flow of your
prose.
<h3 id="em">Emphasis</h3>
Markdown treats asterisks (`*`) and underscores (`_`) as indicators of
emphasis. Text wrapped with one `*` or `_` will be wrapped with an
HTML `<em>` tag; double `*`'s or `_`'s will be wrapped with an HTML
`<strong>` tag. E.g., this input:
*single asterisks*
_single underscores_
**double asterisks**
__double underscores__
will produce:
<em>single asterisks</em>
<em>single underscores</em>
<strong>double asterisks</strong>
<strong>double underscores</strong>
You can use whichever style you prefer; the lone restriction is that
the same character must be used to open and close an emphasis span.
Emphasis can be used in the middle of a word:
un*fucking*believable
But if you surround an `*` or `_` with spaces, it'll be treated as a
literal asterisk or underscore.
To produce a literal asterisk or underscore at a position where it
would otherwise be used as an emphasis delimiter, you can backslash
escape it:
\*this text is surrounded by literal asterisks\*
<h3 id="code">Code</h3>
To indicate a span of code, wrap it with backtick quotes (`` ` ``).
Unlike a pre-formatted code block, a code span indicates code within a
normal paragraph. For example:
Use the `printf()` function.
will produce:
<p>Use the <code>printf()</code> function.</p>
To include a literal backtick character within a code span, you can use
multiple backticks as the opening and closing delimiters:
``There is a literal backtick (`) here.``
which will produce this:
<p><code>There is a literal backtick (`) here.</code></p>
The backtick delimiters surrounding a code span may include spaces --
one after the opening, one before the closing. This allows you to place
literal backtick characters at the beginning or end of a code span:
A single backtick in a code span: `` ` ``
A backtick-delimited string in a code span: `` `foo` ``
will produce:
<p>A single backtick in a code span: <code>`</code></p>
<p>A backtick-delimited string in a code span: <code>`foo`</code></p>
With a code span, ampersands and angle brackets are encoded as HTML
entities automatically, which makes it easy to include example HTML
tags. Markdown will turn this:
Please don't use any `<blink>` tags.
into:
<p>Please don't use any <code>&lt;blink&gt;</code> tags.</p>
You can write this:
`&#8212;` is the decimal-encoded equivalent of `&mdash;`.
to produce:
<p><code>&amp;#8212;</code> is the decimal-encoded
equivalent of <code>&amp;mdash;</code>.</p>
<h3 id="img">Images</h3>
Admittedly, it's fairly difficult to devise a "natural" syntax for
placing images into a plain text document format.
Markdown uses an image syntax that is intended to resemble the syntax
for links, allowing for two styles: *inline* and *reference*.
Inline image syntax looks like this:
![Alt text](/path/to/img.jpg)
![Alt text](/path/to/img.jpg "Optional title")
That is:
* An exclamation mark: `!`;
* followed by a set of square brackets, containing the `alt`
attribute text for the image;
* followed by a set of parentheses, containing the URL or path to
the image, and an optional `title` attribute enclosed in double
or single quotes.
Reference-style image syntax looks like this:
![Alt text][id]
Where "id" is the name of a defined image reference. Image references
are defined using syntax identical to link references:
[id]: url/to/image "Optional title attribute"
As of this writing, Markdown has no syntax for specifying the
dimensions of an image; if this is important to you, you can simply
use regular HTML `<img>` tags.
* * *
<h2 id="misc">Miscellaneous</h2>
<h3 id="autolink">Automatic Links</h3>
Markdown supports a shortcut style for creating "automatic" links for URLs and email addresses: simply surround the URL or email address with angle brackets. What this means is that if you want to show the actual text of a URL or email address, and also have it be a clickable link, you can do this:
<http://example.com/>
Markdown will turn this into:
<a href="http://example.com/">http://example.com/</a>
Automatic links for email addresses work similarly, except that
Markdown will also perform a bit of randomized decimal and hex
entity-encoding to help obscure your address from address-harvesting
spambots. For example, Markdown will turn this:
<address@example.com>
into something like this:
<a href="&#x6D;&#x61;i&#x6C;&#x74;&#x6F;:&#x61;&#x64;&#x64;&#x72;&#x65;
&#115;&#115;&#64;&#101;&#120;&#x61;&#109;&#x70;&#x6C;e&#x2E;&#99;&#111;
&#109;">&#x61;&#x64;&#x64;&#x72;&#x65;&#115;&#115;&#64;&#101;&#120;&#x61;
&#109;&#x70;&#x6C;e&#x2E;&#99;&#111;&#109;</a>
which will render in a browser as a clickable link to "address@example.com".
(This sort of entity-encoding trick will indeed fool many, if not
most, address-harvesting bots, but it definitely won't fool all of
them. It's better than nothing, but an address published in this way
will probably eventually start receiving spam.)
<h3 id="backslash">Backslash Escapes</h3>
Markdown allows you to use backslash escapes to generate literal
characters which would otherwise have special meaning in Markdown's
formatting syntax. For example, if you wanted to surround a word with
literal asterisks (instead of an HTML `<em>` tag), you can backslashes
before the asterisks, like this:
\*literal asterisks\*
Markdown provides backslash escapes for the following characters:
\ backslash
` backtick
* asterisk
_ underscore
{} curly braces
[] square brackets
() parentheses
# hash mark
+ plus sign
- minus sign (hyphen)
. dot
! exclamation mark

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@ -0,0 +1,9 @@
<blockquote>
<p>foo</p>
<blockquote>
<p>bar</p>
</blockquote>
<p>foo</p>
</blockquote>

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@ -0,0 +1,5 @@
> foo
>
> > bar
>
> foo

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@ -0,0 +1,166 @@
<h2>Unordered</h2>
<p>Asterisks tight:</p>
<ul>
<li>asterisk 1</li>
<li>asterisk 2</li>
<li>asterisk 3</li>
</ul>
<p>Asterisks loose:</p>
<ul>
<li><p>asterisk 1</p></li>
<li><p>asterisk 2</p></li>
<li><p>asterisk 3</p></li>
</ul>
<hr>
<p>Pluses tight:</p>
<ul>
<li>Plus 1</li>
<li>Plus 2</li>
<li>Plus 3</li>
</ul>
<p>Pluses loose:</p>
<ul>
<li><p>Plus 1</p></li>
<li><p>Plus 2</p></li>
<li><p>Plus 3</p></li>
</ul>
<hr>
<p>Minuses tight:</p>
<ul>
<li>Minus 1</li>
<li>Minus 2</li>
<li>Minus 3</li>
</ul>
<p>Minuses loose:</p>
<ul>
<li><p>Minus 1</p></li>
<li><p>Minus 2</p></li>
<li><p>Minus 3</p></li>
</ul>
<h2>Ordered</h2>
<p>Tight:</p>
<ol>
<li>First</li>
<li>Second</li>
<li>Third</li>
</ol>
<p>and:</p>
<ol>
<li>One</li>
<li>Two</li>
<li>Three</li>
</ol>
<p>Loose using tabs:</p>
<ol>
<li><p>First</p></li>
<li><p>Second</p></li>
<li><p>Third</p></li>
</ol>
<p>and using spaces:</p>
<ol>
<li><p>One</p></li>
<li><p>Two</p></li>
<li><p>Three</p></li>
</ol>
<p>Multiple paragraphs:</p>
<ol>
<li><p>Item 1, graf one.</p>
<p>Item 2. graf two. The quick brown fox jumped over the lazy dog's
back.</p></li>
<li><p>Item 2.</p></li>
<li><p>Item 3.</p></li>
</ol>
<h2>Nested</h2>
<ul>
<li>Tab
<ul>
<li>Tab
<ul>
<li>Tab</li>
</ul></li>
</ul></li>
</ul>
<p>Here's another:</p>
<ol>
<li>First</li>
<li>Second:
<ul>
<li>Fee</li>
<li>Fie</li>
<li>Foe</li>
</ul></li>
<li>Third</li>
</ol>
<p>Same thing but with paragraphs:</p>
<ol>
<li><p>First</p></li>
<li><p>Second:</p>
<ul>
<li>Fee</li>
<li>Fie</li>
<li>Foe</li>
</ul></li>
<li><p>Third</p></li>
</ol>
<p>This was an error in Markdown 1.0.1:</p>
<ul>
<li><p>this</p>
<ul>
<li>sub</li>
</ul>
<p>that</p></li>
</ul>

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@ -0,0 +1,131 @@
## Unordered
Asterisks tight:
* asterisk 1
* asterisk 2
* asterisk 3
Asterisks loose:
* asterisk 1
* asterisk 2
* asterisk 3
* * *
Pluses tight:
+ Plus 1
+ Plus 2
+ Plus 3
Pluses loose:
+ Plus 1
+ Plus 2
+ Plus 3
* * *
Minuses tight:
- Minus 1
- Minus 2
- Minus 3
Minuses loose:
- Minus 1
- Minus 2
- Minus 3
## Ordered
Tight:
1. First
2. Second
3. Third
and:
1. One
2. Two
3. Three
Loose using tabs:
1. First
2. Second
3. Third
and using spaces:
1. One
2. Two
3. Three
Multiple paragraphs:
1. Item 1, graf one.
Item 2. graf two. The quick brown fox jumped over the lazy dog's
back.
2. Item 2.
3. Item 3.
## Nested
* Tab
* Tab
* Tab
Here's another:
1. First
2. Second:
* Fee
* Fie
* Foe
3. Third
Same thing but with paragraphs:
1. First
2. Second:
* Fee
* Fie
* Foe
3. Third
This was an error in Markdown 1.0.1:
* this
* sub
that

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@ -0,0 +1,7 @@
<p><strong><em>This is strong and em.</em></strong></p>
<p>So is <strong><em>this</em></strong> word.</p>
<p><strong><em>This is strong and em.</em></strong></p>
<p>So is <strong><em>this</em></strong> word.</p>

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@ -0,0 +1,7 @@
***This is strong and em.***
So is ***this*** word.
___This is strong and em.___
So is ___this___ word.

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@ -0,0 +1,26 @@
<ul>
<li><p>this is a list item
indented with tabs</p></li>
<li><p>this is a list item
indented with spaces</p></li>
</ul>
<p>Code:</p>
<pre><code>this code block is indented by one tab
</code></pre>
<p>And:</p>
<pre><code> this code block is indented by two tabs
</code></pre>
<p>And:</p>
<pre><code>+ this is an example list item
indented with tabs
+ this is an example list item
indented with spaces
</code></pre>

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@ -0,0 +1,21 @@
+ this is a list item
indented with tabs
+ this is a list item
indented with spaces
Code:
this code block is indented by one tab
And:
this code block is indented by two tabs
And:
+ this is an example list item
indented with tabs
+ this is an example list item
indented with spaces

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@ -0,0 +1,9 @@
<blockquote>
<p>A list within a blockquote:</p>
<ul>
<li>asterisk 1</li>
<li>asterisk 2</li>
<li>asterisk 3</li>
</ul>
</blockquote>

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@ -0,0 +1,5 @@
> A list within a blockquote:
>
> * asterisk 1
> * asterisk 2
> * asterisk 3

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@ -5,13 +5,14 @@
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>设置 - Powered by MinDoc</title>
<title>设置 - {{.Model.BookName}} - Powered by MinDoc</title>
<!-- Bootstrap -->
<link href="{{cdncss "/static/bootstrap/css/bootstrap.min.css"}}" rel="stylesheet">
<link href="{{cdncss "/static/font-awesome/css/font-awesome.min.css"}}" rel="stylesheet">
<link href="{{cdncss "/static/webuploader/webuploader.css"}}" rel="stylesheet">
<link href="{{cdncss "/static/cropper/2.3.4/cropper.min.css"}}" rel="stylesheet">
<link href="{{cdncss "/static/bootstrap/plugins/tagsinput/bootstrap-tagsinput.css"}}" rel="stylesheet">
<link href="/static/css/main.css" rel="stylesheet">
<!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
@ -60,17 +61,17 @@
</div>
<div class="form-group">
<label>标识</label>
<input type="text" class="form-control" value=" {{.BaseUrl}}{{urlfor "DocumentController.Index" ":key" .Model.Identify}}" disabled>
<input type="text" class="form-control" value="{{.BaseUrl}}{{urlfor "DocumentController.Index" ":key" .Model.Identify}}" placeholder="项目唯一标识" disabled>
</div>
<div class="form-group">
<label>描述</label>
<textarea rows="3" class="form-control" name="description" style="height: 90px">{{.Model.Description}}</textarea>
<p class="text">描述信息不超过500个字符</p>
<textarea rows="3" class="form-control" name="description" style="height: 90px" placeholder="项目描述">{{.Model.Description}}</textarea>
<p class="text">描述信息不超过500个字符,支持Markdown语法</p>
</div>
<div class="form-group">
<label>标签</label>
<input type="text" class="form-control" name="label" placeholder="项目标签" value="{{.Model.Label}}">
<p class="text">最多允许添加10个标签多个标签请用“;”分割</p>
<p class="text">最多允许添加10个标签多个标签请用“,”分割</p>
</div>
<div class="form-group">
<label>编辑器</label>
@ -177,12 +178,12 @@
</div>
</div>
<!-- Start Modal -->
<div class="modal fade" id="upload-logo-panel" tabindex="-1" role="dialog" aria-labelledby="修改头像" aria-hidden="true">
<div class="modal fade" id="upload-logo-panel" tabindex="-1" role="dialog" aria-labelledby="修改封面" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
<h4 class="modal-title">修改头像</h4>
<h4 class="modal-title">修改封面</h4>
</div>
<div class="modal-body">
<div class="wraper">
@ -271,6 +272,7 @@
<script src="{{cdnjs "/static/webuploader/webuploader.min.js"}}" type="text/javascript"></script>
<script src="{{cdnjs "/static/cropper/2.3.4/cropper.min.js"}}" type="text/javascript"></script>
<script src="{{cdnjs "/static/js/jquery.form.js"}}" type="text/javascript"></script>
<script src="{{cdnjs "/static/bootstrap/plugins/tagsinput/bootstrap-tagsinput.min.js"}}" type="text/javascript"></script>
<script src="/static/js/main.js" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
@ -280,6 +282,13 @@
window.modalHtml = $("#upload-logo-panel").find(".modal-body").html();
});
$('input[name="label"]').tagsinput({
confirmKeys: [13,44],
maxTags: 10,
trimValue: true,
cancelConfirmKeysOnEmpty : false
});
$("#changePrivatelyOwnedForm").ajaxForm({
beforeSubmit :function () {
$("#btnChangePrivatelyOwned").button("loading");

View File

@ -25,6 +25,19 @@
{{template "widgets/header.tpl" .}}
<div class="container manual-body">
<div class="row">
{{if gt (.Labels|len) 0}}
<div class="hide tag-container-outer">
<span class="title">热门标签:</span>
<span class="tags">
{{range $index,$item := .Labels}}
<a href="{{urlfor "LabelController.Index" ":key" $item.LabelName}}">{{$item.LabelName}}<span class="detail">{{$item.BookNumber}}</span></a>
{{end}}
</span>
</div>
{{end}}
<div class="manual-list">
{{range $index,$item := .Lists}}
<div class="list-item">

View File

@ -0,0 +1,65 @@
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>{{.LabelName}} - Powered by MinDoc</title>
<!-- Bootstrap -->
<link href="{{cdncss "/static/bootstrap/css/bootstrap.min.css"}}" rel="stylesheet">
<link href="{{cdncss "/static/font-awesome/css/font-awesome.min.css"}}" rel="stylesheet">
<link href="/static/css/main.css" rel="stylesheet">
<!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="/static/html5shiv/3.7.3/html5shiv.min.js"></script>
<script src="/static/respond.js/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body>
<div class="manual-reader manual-container manual-search-reader">
{{template "widgets/header.tpl" .}}
<div class="container manual-body">
<div class="search-head">
<strong class="search-title">显示标签为"{{.LabelName}}"的项目</strong>
</div>
<div class="row">
<div class="manual-list">
{{range $index,$item := .Lists}}
<div class="list-item">
<dl class="manual-item-standard">
<dt>
<a href="{{urlfor "DocumentController.Index" ":key" $item.Identify}}" title="{{$item.BookName}}-{{$item.CreateName}}" target="_blank">
<img src="{{$item.Cover}}" class="cover" alt="{{$item.BookName}}-{{$item.CreateName}}">
</a>
</dt>
<dd>
<a href="{{urlfor "DocumentController.Index" ":key" $item.Identify}}" class="name" title="{{$item.BookName}}-{{$item.CreateName}}" target="_blank">{{$item.BookName}}</a>
</dd>
<dd>
<span class="author">
<b class="text">作者</b>
<b class="text">-</b>
<b class="text">{{$item.CreateName}}</b>
</span>
</dd>
</dl>
</div>
{{end}}
<div class="clearfix"></div>
</div>
<nav>
{{.PageHtml}}
</nav>
</div>
</div>
{{template "widgets/footer.tpl" .}}
</div>
<script src="{{cdnjs "/static/jquery/1.12.4/jquery.min.js"}}"></script>
<script src="{{cdnjs "/static/bootstrap/js/bootstrap.min.js"}}"></script>
</body>
</html>

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@ -112,6 +112,7 @@
<template v-else>
<button type="button" class="btn btn-success btn-sm" @click="setMemberStatus(item.member_id,0,$event)" data-loading-text="禁用中...">启用</button>
</template>
<button type="button" class="btn btn-danger btn-sm" @click="deleteMember(item.member_id,$event)" data-loading-text="删除中">删除</button>
</template>
</td>
</tr>
@ -297,6 +298,31 @@
}
}
})
},
deleteMember : function (id, e) {
var $this = this;
$.ajax({
url : "{{urlfor "ManagerController.DeleteMember"}}",
type : "post",
data : { "id":id },
dataType : "json",
success : function (res) {
if (res.errcode === 0) {
for (var index in $this.lists) {
var item = $this.lists[index];
if (item.member_id == id) {
console.log(item);
$this.lists.splice(index,1);
break;
}
}
} else {
alert("操作失败:" + res.message);
}
}
});
}
}
});