HackMD/public/js/extra.js

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/* eslint-env browser, jquery */
/* global moment, serverurl */
require('prismjs/themes/prism.css')
require('prismjs/components/prism-wiki')
require('prismjs/components/prism-haskell')
require('prismjs/components/prism-go')
require('prismjs/components/prism-typescript')
require('prismjs/components/prism-jsx')
import Prism from 'prismjs'
import hljs from 'highlight.js'
import PDFObject from 'pdfobject'
import S from 'string'
import { saveAs } from 'file-saver'
require('./lib/common/login')
require('../vendor/md-toc')
var Viz = require('viz.js')
// auto update last change
window.createtime = null
window.lastchangetime = null
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window.lastchangeui = {
status: $('.ui-status-lastchange'),
time: $('.ui-lastchange'),
user: $('.ui-lastchangeuser'),
nouser: $('.ui-no-lastchangeuser')
}
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const ownerui = $('.ui-owner')
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export function updateLastChange () {
if (!window.lastchangeui) return
if (window.createtime) {
if (window.createtime && !window.lastchangetime) {
window.lastchangeui.status.text('created')
} else {
window.lastchangeui.status.text('changed')
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}
const time = window.lastchangetime || window.createtime
window.lastchangeui.time.html(moment(time).fromNow())
window.lastchangeui.time.attr('title', moment(time).format('llll'))
}
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}
setInterval(updateLastChange, 60000)
window.lastchangeuser = null
window.lastchangeuserprofile = null
export function updateLastChangeUser () {
if (window.lastchangeui) {
if (window.lastchangeuser && window.lastchangeuserprofile) {
const icon = window.lastchangeui.user.children('i')
icon.attr('title', window.lastchangeuserprofile.name).tooltip('fixTitle')
if (window.lastchangeuserprofile.photo) { icon.attr('style', `background-image:url(${window.lastchangeuserprofile.photo})`) }
window.lastchangeui.user.show()
window.lastchangeui.nouser.hide()
} else {
window.lastchangeui.user.hide()
window.lastchangeui.nouser.show()
}
}
}
window.owner = null
window.ownerprofile = null
export function updateOwner () {
if (window.ownerui) {
if (window.owner && window.ownerprofile && window.owner !== window.lastchangeuser) {
const icon = ownerui.children('i')
icon.attr('title', window.ownerprofile.name).tooltip('fixTitle')
const styleString = `background-image:url(${window.ownerprofile.photo})`
if (window.ownerprofile.photo && icon.attr('style') !== styleString) { icon.attr('style', styleString) }
ownerui.show()
} else {
ownerui.hide()
}
}
}
// get title
function getTitle (view) {
let title = ''
if (md && md.meta && md.meta.title && (typeof md.meta.title === 'string' || typeof md.meta.title === 'number')) {
title = md.meta.title
} else {
const h1s = view.find('h1')
if (h1s.length > 0) {
title = h1s.first().text()
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} else {
title = null
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}
}
return title
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}
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// render title
export function renderTitle (view) {
let title = getTitle(view)
if (title) {
title += ' - HackMD'
} else {
title = 'HackMD - Collaborative markdown notes'
}
return title
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}
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// render filename
export function renderFilename (view) {
let filename = getTitle(view)
if (!filename) {
filename = 'Untitled'
}
return filename
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}
// render tags
export function renderTags (view) {
const tags = []
const rawtags = []
if (md && md.meta && md.meta.tags && (typeof md.meta.tags === 'string' || typeof md.meta.tags === 'number')) {
const metaTags = (`${md.meta.tags}`).split(',')
for (let i = 0; i < metaTags.length; i++) {
const text = metaTags[i].trim()
if (text) rawtags.push(text)
}
} else {
view.find('h6').each((key, value) => {
if (/^tags/gmi.test($(value).text())) {
const codes = $(value).find('code')
for (let i = 0; i < codes.length; i++) {
const text = codes[i].innerHTML.trim()
if (text) rawtags.push(text)
}
}
})
}
for (let i = 0; i < rawtags.length; i++) {
let found = false
for (let j = 0; j < tags.length; j++) {
if (tags[j] === rawtags[i]) {
found = true
break
}
}
if (!found) { tags.push(rawtags[i]) }
}
return tags
}
function slugifyWithUTF8 (text) {
let newText = S(text.toLowerCase()).trim().stripTags().dasherize().s
newText = newText.replace(/([!"#$%&'()*+,./:;<=>?@[\\\]^`{|}~])/g, '')
return newText
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}
export function isValidURL (str) {
const pattern = new RegExp('^(https?:\\/\\/)?' + // protocol
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'((([a-z\\d]([a-z\\d-]*[a-z\\d])*)\\.)+[a-z]{2,}|' + // domain name
'((\\d{1,3}\\.){3}\\d{1,3}))' + // OR ip (v4) address
'(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*' + // port and path
'(\\?[;&a-z\\d%_.~+=-]*)?' + // query string
'(\\#[-a-z\\d_]*)?$', 'i') // fragment locator
if (!pattern.test(str)) {
return false
} else {
return true
}
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}
// parse meta
export function parseMeta (md, edit, view, toc, tocAffix) {
let lang = null
let dir = null
let breaks = true
if (md && md.meta) {
const meta = md.meta
lang = meta.lang
dir = meta.dir
breaks = meta.breaks
}
// text language
if (lang && typeof lang === 'string') {
view.attr('lang', lang)
toc.attr('lang', lang)
tocAffix.attr('lang', lang)
if (edit) { edit.attr('lang', lang) }
} else {
view.removeAttr('lang')
toc.removeAttr('lang')
tocAffix.removeAttr('lang')
if (edit) { edit.removeAttr('lang', lang) }
}
// text direction
if (dir && typeof dir === 'string') {
view.attr('dir', dir)
toc.attr('dir', dir)
tocAffix.attr('dir', dir)
} else {
view.removeAttr('dir')
toc.removeAttr('dir')
tocAffix.removeAttr('dir')
}
// breaks
if (typeof breaks === 'boolean' && !breaks) {
md.options.breaks = false
} else {
md.options.breaks = true
}
}
window.viewAjaxCallback = null
// regex for extra tags
const spaceregex = /\s*/
const notinhtmltagregex = /(?![^<]*>|[^<>]*<\/)/
let coloregex = /\[color=([#|(|)|\s|,|\w]*?)\]/
coloregex = new RegExp(coloregex.source + notinhtmltagregex.source, 'g')
let nameregex = /\[name=(.*?)\]/
let timeregex = /\[time=([:|,|+|-|(|)|\s|\w]*?)\]/
const nameandtimeregex = new RegExp(nameregex.source + spaceregex.source + timeregex.source + notinhtmltagregex.source, 'g')
nameregex = new RegExp(nameregex.source + notinhtmltagregex.source, 'g')
timeregex = new RegExp(timeregex.source + notinhtmltagregex.source, 'g')
function replaceExtraTags (html) {
html = html.replace(coloregex, '<span class="color" data-color="$1"></span>')
html = html.replace(nameandtimeregex, '<small><i class="fa fa-user"></i> $1 <i class="fa fa-clock-o"></i> $2</small>')
html = html.replace(nameregex, '<small><i class="fa fa-user"></i> $1</small>')
html = html.replace(timeregex, '<small><i class="fa fa-clock-o"></i> $1</small>')
return html
}
if (typeof window.mermaid !== 'undefined' && window.mermaid) window.mermaid.startOnLoad = false
// dynamic event or object binding here
export function finishView (view) {
// todo list
const lis = view.find('li.raw').removeClass('raw').sortByDepth().toArray()
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for (let li of lis) {
let html = $(li).clone()[0].innerHTML
const p = $(li).children('p')
if (p.length === 1) {
html = p.html()
li = p[0]
}
html = replaceExtraTags(html)
li.innerHTML = html
let disabled = 'disabled'
if (typeof editor !== 'undefined' && window.havePermission()) { disabled = '' }
if (/^\s*\[[x ]\]\s*/.test(html)) {
li.innerHTML = html.replace(/^\s*\[ \]\s*/, `<input type="checkbox" class="task-list-item-checkbox "${disabled}><label></label>`)
.replace(/^\s*\[x\]\s*/, `<input type="checkbox" class="task-list-item-checkbox" checked ${disabled}><label></label>`)
li.setAttribute('class', 'task-list-item')
}
if (typeof editor !== 'undefined' && window.havePermission()) { $(li).find('input').change(toggleTodoEvent) }
// color tag in list will convert it to tag icon with color
const tagColor = $(li).closest('ul').find('.color')
tagColor.each((key, value) => {
$(value).addClass('fa fa-tag').css('color', $(value).attr('data-color'))
})
}
// youtube
view.find('div.youtube.raw').removeClass('raw')
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.click(function () {
imgPlayiframe(this, '//www.youtube.com/embed/')
})
// vimeo
view.find('div.vimeo.raw').removeClass('raw')
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.click(function () {
imgPlayiframe(this, '//player.vimeo.com/video/')
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})
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.each((key, value) => {
$.ajax({
type: 'GET',
url: `//vimeo.com/api/v2/video/${$(value).attr('data-videoid')}.json`,
jsonp: 'callback',
dataType: 'jsonp',
success (data) {
const thumbnailSrc = data[0].thumbnail_large
const image = `<img src="${thumbnailSrc}" />`
$(value).prepend(image)
if (window.viewAjaxCallback) window.viewAjaxCallback()
}
})
})
// gist
view.find('code[data-gist-id]').each((key, value) => {
if ($(value).children().length === 0) { $(value).gist(window.viewAjaxCallback) }
})
// sequence diagram
const sequences = view.find('div.sequence-diagram.raw').removeClass('raw')
sequences.each((key, value) => {
try {
var $value = $(value)
const $ele = $(value).parent().parent()
const sequence = $value
sequence.sequenceDiagram({
theme: 'simple'
})
$ele.addClass('sequence-diagram')
$value.children().unwrap().unwrap()
const svg = $ele.find('> svg')
svg[0].setAttribute('viewBox', `0 0 ${svg.attr('width')} ${svg.attr('height')}`)
svg[0].setAttribute('preserveAspectRatio', 'xMidYMid meet')
} catch (err) {
$value.unwrap()
$value.parent().append('<div class="alert alert-warning">' + err + '</div>')
console.warn(err)
}
})
// flowchart
const flow = view.find('div.flow-chart.raw').removeClass('raw')
flow.each((key, value) => {
try {
var $value = $(value)
const $ele = $(value).parent().parent()
const chart = window.flowchart.parse($value.text())
$value.html('')
chart.drawSVG(value, {
'line-width': 2,
'fill': 'none',
'font-size': '16px',
'font-family': "'Andale Mono', monospace"
})
$ele.addClass('flow-chart')
$value.children().unwrap().unwrap()
} catch (err) {
$value.unwrap()
$value.parent().append('<div class="alert alert-warning">' + err + '</div>')
console.warn(err)
}
})
// graphviz
var graphvizs = view.find('div.graphviz.raw').removeClass('raw')
graphvizs.each(function (key, value) {
try {
var $value = $(value)
var $ele = $(value).parent().parent()
var graphviz = Viz($value.text())
if (!graphviz) throw Error('viz.js output empty graph')
$value.html(graphviz)
$ele.addClass('graphviz')
$value.children().unwrap().unwrap()
} catch (err) {
$value.unwrap()
$value.parent().append('<div class="alert alert-warning">' + err + '</div>')
console.warn(err)
}
})
// mermaid
const mermaids = view.find('div.mermaid.raw').removeClass('raw')
mermaids.each((key, value) => {
try {
var $value = $(value)
const $ele = $(value).closest('pre')
let mermaidError = null
window.mermaid.parseError = (err, hash) => {
mermaidError = err
}
if (window.mermaidAPI.parse($value.text())) {
$ele.addClass('mermaid')
$ele.html($value.text())
window.mermaid.init(undefined, $ele)
} else {
throw new Error(mermaidError)
}
} catch (err) {
$value.unwrap()
$value.parent().append('<div class="alert alert-warning">' + err + '</div>')
console.warn(err)
}
})
// image href new window(emoji not included)
const images = view.find('img.raw[src]').removeClass('raw')
images.each((key, value) => {
// if it's already wrapped by link, then ignore
const $value = $(value)
$value[0].onload = e => {
if (window.viewAjaxCallback) window.viewAjaxCallback()
}
})
// blockquote
const blockquote = view.find('blockquote.raw').removeClass('raw')
const blockquoteP = blockquote.find('p')
blockquoteP.each((key, value) => {
let html = $(value).html()
html = replaceExtraTags(html)
$(value).html(html)
})
// color tag in blockquote will change its left border color
const blockquoteColor = blockquote.find('.color')
blockquoteColor.each((key, value) => {
$(value).closest('blockquote').css('border-left-color', $(value).attr('data-color'))
})
// slideshare
view.find('div.slideshare.raw').removeClass('raw')
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.each((key, value) => {
$.ajax({
type: 'GET',
url: `//www.slideshare.net/api/oembed/2?url=http://www.slideshare.net/${$(value).attr('data-slideshareid')}&format=json`,
jsonp: 'callback',
dataType: 'jsonp',
success (data) {
const $html = $(data.html)
const iframe = $html.closest('iframe')
const caption = $html.closest('div')
const inner = $('<div class="inner"></div>').append(iframe)
const height = iframe.attr('height')
const width = iframe.attr('width')
const ratio = (height / width) * 100
inner.css('padding-bottom', `${ratio}%`)
$(value).html(inner).append(caption)
if (window.viewAjaxCallback) window.viewAjaxCallback()
}
})
})
// speakerdeck
view.find('div.speakerdeck.raw').removeClass('raw')
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.each((key, value) => {
const url = `https://speakerdeck.com/oembed.json?url=https%3A%2F%2Fspeakerdeck.com%2F${encodeURIComponent($(value).attr('data-speakerdeckid'))}`
// use yql because speakerdeck not support jsonp
$.ajax({
url: 'https://query.yahooapis.com/v1/public/yql',
data: {
q: `select * from json where url ='${url}'`,
format: 'json'
},
dataType: 'jsonp',
success (data) {
if (!data.query || !data.query.results) return
const json = data.query.results.json
const html = json.html
var ratio = json.height / json.width
$(value).html(html)
const iframe = $(value).children('iframe')
const src = iframe.attr('src')
if (src.indexOf('//') === 0) { iframe.attr('src', `https:${src}`) }
const inner = $('<div class="inner"></div>').append(iframe)
const height = iframe.attr('height')
const width = iframe.attr('width')
ratio = (height / width) * 100
inner.css('padding-bottom', `${ratio}%`)
$(value).html(inner)
if (window.viewAjaxCallback) window.viewAjaxCallback()
}
})
})
// pdf
view.find('div.pdf.raw').removeClass('raw')
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.each(function (key, value) {
const url = $(value).attr('data-pdfurl')
const inner = $('<div></div>')
$(this).append(inner)
PDFObject.embed(url, inner, {
height: '400px'
})
})
// syntax highlighting
view.find('code.raw').removeClass('raw')
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.each((key, value) => {
const langDiv = $(value)
if (langDiv.length > 0) {
const reallang = langDiv[0].className.replace(/hljs|wrap/g, '').trim()
const codeDiv = langDiv.find('.code')
let code = ''
if (codeDiv.length > 0) code = codeDiv.html()
else code = langDiv.html()
var result
if (!reallang) {
result = {
value: code
}
} else if (reallang === 'haskell' || reallang === 'go' || reallang === 'typescript' || reallang === 'jsx') {
code = S(code).unescapeHTML().s
result = {
value: Prism.highlight(code, Prism.languages[reallang])
}
} else if (reallang === 'tiddlywiki' || reallang === 'mediawiki') {
code = S(code).unescapeHTML().s
result = {
value: Prism.highlight(code, Prism.languages.wiki)
}
} else {
code = S(code).unescapeHTML().s
const languages = hljs.listLanguages()
if (!languages.includes(reallang)) {
result = hljs.highlightAuto(code)
} else {
result = hljs.highlight(reallang, code)
}
}
if (codeDiv.length > 0) codeDiv.html(result.value)
else langDiv.html(result.value)
}
})
// mathjax
const mathjaxdivs = view.find('span.mathjax.raw').removeClass('raw').toArray()
try {
if (mathjaxdivs.length > 1) {
window.MathJax.Hub.Queue(['Typeset', window.MathJax.Hub, mathjaxdivs])
window.MathJax.Hub.Queue(window.viewAjaxCallback)
} else if (mathjaxdivs.length > 0) {
window.MathJax.Hub.Queue(['Typeset', window.MathJax.Hub, mathjaxdivs[0]])
window.MathJax.Hub.Queue(window.viewAjaxCallback)
}
} catch (err) {
console.warn(err)
}
// render title
document.title = renderTitle(view)
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}
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// only static transform should be here
export function postProcess (code) {
const result = $(`<div>${code}</div>`)
// link should open in new window or tab
result.find('a:not([href^="#"]):not([target])').attr('target', '_blank')
// update continue line numbers
const linenumberdivs = result.find('.gutter.linenumber').toArray()
for (let i = 0; i < linenumberdivs.length; i++) {
if ($(linenumberdivs[i]).hasClass('continue')) {
const startnumber = linenumberdivs[i - 1] ? parseInt($(linenumberdivs[i - 1]).find('> span').last().attr('data-linenumber')) : 0
$(linenumberdivs[i]).find('> span').each((key, value) => {
$(value).attr('data-linenumber', startnumber + key + 1)
})
}
}
// show yaml meta paring error
if (md.metaError) {
var warning = result.find('div#meta-error')
if (warning && warning.length > 0) {
warning.text(md.metaError)
} else {
warning = $('<div id="meta-error" class="alert alert-warning">' + md.metaError + '</div>')
result.prepend(warning)
}
}
return result
}
window.postProcess = postProcess
function generateCleanHTML (view) {
const src = view.clone()
const eles = src.find('*')
// remove syncscroll parts
eles.removeClass('part')
src.find('*[class=""]').removeAttr('class')
eles.removeAttr('data-startline data-endline')
src.find("a[href^='#'][smoothhashscroll]").removeAttr('smoothhashscroll')
// remove gist content
src.find('code[data-gist-id]').children().remove()
// disable todo list
src.find('input.task-list-item-checkbox').attr('disabled', '')
// replace emoji image path
src.find('img.emoji').each((key, value) => {
let name = $(value).attr('alt')
name = name.substr(1)
name = name.slice(0, name.length - 1)
$(value).attr('src', `https://www.tortue.me/emoji/${name}.png`)
})
// replace video to iframe
src.find('div[data-videoid]').each((key, value) => {
const id = $(value).attr('data-videoid')
const style = $(value).attr('style')
let url = null
if ($(value).hasClass('youtube')) {
url = 'https://www.youtube.com/embed/'
} else if ($(value).hasClass('vimeo')) {
url = 'https://player.vimeo.com/video/'
}
if (url) {
const iframe = $('<iframe frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>')
iframe.attr('src', url + id)
iframe.attr('style', style)
$(value).html(iframe)
}
})
return src
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}
export function exportToRawHTML (view) {
const filename = `${renderFilename(window.ui.area.markdown)}.html`
const src = generateCleanHTML(view)
$(src).find('a.anchor').remove()
const html = src[0].outerHTML
const blob = new Blob([html], {
type: 'text/html;charset=utf-8'
})
saveAs(blob, filename, true)
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}
// extract markdown body to html and compile to template
export function exportToHTML (view) {
const title = renderTitle(window.ui.area.markdown)
const filename = `${renderFilename(window.ui.area.markdown)}.html`
const src = generateCleanHTML(view)
// generate toc
const toc = $('#ui-toc').clone()
toc.find('*').removeClass('active').find("a[href^='#'][smoothhashscroll]").removeAttr('smoothhashscroll')
const tocAffix = $('#ui-toc-affix').clone()
tocAffix.find('*').removeClass('active').find("a[href^='#'][smoothhashscroll]").removeAttr('smoothhashscroll')
// generate html via template
$.get(`${serverurl}/build/html.min.css`, css => {
$.get(`${serverurl}/views/html.hbs`, data => {
const template = window.Handlebars.compile(data)
const context = {
url: serverurl,
title,
css,
html: src[0].outerHTML,
'ui-toc': toc.html(),
'ui-toc-affix': tocAffix.html(),
lang: (md && md.meta && md.meta.lang) ? `lang="${md.meta.lang}"` : null,
dir: (md && md.meta && md.meta.dir) ? `dir="${md.meta.dir}"` : null
}
const html = template(context)
// console.log(html);
const blob = new Blob([html], {
type: 'text/html;charset=utf-8'
})
saveAs(blob, filename, true)
})
})
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}
// jQuery sortByDepth
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$.fn.sortByDepth = function () {
const ar = this.map(function () {
return {
length: $(this).parents().length,
elt: this
}
}).get()
const result = []
let i = ar.length
ar.sort((a, b) => a.length - b.length)
while (i--) {
result.push(ar[i].elt)
}
return $(result)
}
function toggleTodoEvent (e) {
const startline = $(this).closest('li').attr('data-startline') - 1
const line = window.editor.getLine(startline)
const matches = line.match(/^[>\s]*[-+*]\s\[([x ])\]/)
if (matches && matches.length >= 2) {
let checked = null
if (matches[1] === 'x') { checked = true } else if (matches[1] === ' ') { checked = false }
const replacements = matches[0].match(/(^[>\s]*[-+*]\s\[)([x ])(\])/)
window.editor.replaceRange(checked ? ' ' : 'x', {
line: startline,
ch: replacements[1].length
}, {
line: startline,
ch: replacements[1].length + 1
}, '+input')
}
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}
// remove hash
function removeHash () {
history.pushState('', document.title, window.location.pathname + window.location.search)
}
let tocExpand = false
function checkExpandToggle () {
const toc = $('.ui-toc-dropdown .toc')
const toggle = $('.expand-toggle')
if (!tocExpand) {
toc.removeClass('expand')
toggle.text('Expand all')
} else {
toc.addClass('expand')
toggle.text('Collapse all')
}
}
// toc
export function generateToc (id) {
const target = $(`#${id}`)
target.html('')
/* eslint-disable no-unused-vars */
var toc = new window.Toc('doc', {
'level': 3,
'top': -1,
'class': 'toc',
'ulClass': 'nav',
'targetId': id,
'process': getHeaderContent
})
/* eslint-enable no-unsed-vars */
if (target.text() === 'undefined') { target.html('') }
const tocMenu = $('<div class="toc-menu"></div')
const toggle = $('<a class="expand-toggle" href="#">Expand all</a>')
const backtotop = $('<a class="back-to-top" href="#">Back to top</a>')
const gotobottom = $('<a class="go-to-bottom" href="#">Go to bottom</a>')
checkExpandToggle()
toggle.click(e => {
e.preventDefault()
e.stopPropagation()
tocExpand = !tocExpand
checkExpandToggle()
})
backtotop.click(e => {
e.preventDefault()
e.stopPropagation()
if (window.scrollToTop) { window.scrollToTop() }
removeHash()
})
gotobottom.click(e => {
e.preventDefault()
e.stopPropagation()
if (window.scrollToBottom) { window.scrollToBottom() }
removeHash()
})
tocMenu.append(toggle).append(backtotop).append(gotobottom)
target.append(tocMenu)
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}
// smooth all hash trigger scrolling
export function smoothHashScroll () {
const hashElements = $("a[href^='#']:not([smoothhashscroll])").toArray()
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for (const element of hashElements) {
const $element = $(element)
const hash = element.hash
if (hash) {
$element.on('click', function (e) {
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// store hash
const hash = decodeURIComponent(this.hash)
// escape special characters in jquery selector
const $hash = $(hash.replace(/(:|\.|\[|\]|,)/g, '\\$1'))
// return if no element been selected
if ($hash.length <= 0) return
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// prevent default anchor click behavior
e.preventDefault()
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// animate
$('body, html').stop(true, true).animate({
scrollTop: $hash.offset().top
}, 100, 'linear', () => {
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// when done, add hash to url
// (default click behaviour)
window.location.hash = hash
})
})
$element.attr('smoothhashscroll', '')
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}
}
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}
function imgPlayiframe (element, src) {
if (!$(element).attr('data-videoid')) return
const iframe = $("<iframe frameborder='0' webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>")
$(iframe).attr('src', `${src + $(element).attr('data-videoid')}?autoplay=1`)
$(element).find('img').css('visibility', 'hidden')
$(element).append(iframe)
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}
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const anchorForId = id => {
const anchor = document.createElement('a')
anchor.className = 'anchor hidden-xs'
anchor.href = `#${id}`
anchor.innerHTML = '<span class="octicon octicon-link"></span>'
anchor.title = id
return anchor
}
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const linkifyAnchors = (level, containingElement) => {
const headers = containingElement.getElementsByTagName(`h${level}`)
for (let i = 0, l = headers.length; i < l; i++) {
let header = headers[i]
if (header.getElementsByClassName('anchor').length === 0) {
if (typeof header.id === 'undefined' || header.id === '') {
// to escape characters not allow in css and humanize
const id = slugifyWithUTF8(getHeaderContent(header))
header.id = id
}
header.insertBefore(anchorForId(header.id), header.firstChild)
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}
}
}
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export function autoLinkify (view) {
const contentBlock = view[0]
if (!contentBlock) {
return
}
for (let level = 1; level <= 6; level++) {
linkifyAnchors(level, contentBlock)
}
}
function getHeaderContent (header) {
const headerHTML = $(header).clone()
headerHTML.find('.MathJax_Preview').remove()
headerHTML.find('.MathJax').remove()
return headerHTML[0].innerHTML
}
export function deduplicatedHeaderId (view) {
const headers = view.find(':header.raw').removeClass('raw').toArray()
for (let i = 0; i < headers.length; i++) {
const id = $(headers[i]).attr('id')
if (!id) continue
const duplicatedHeaders = view.find(`:header[id="${id}"]`).toArray()
for (let j = 0; j < duplicatedHeaders.length; j++) {
if (duplicatedHeaders[j] !== headers[i]) {
const newId = id + j
const $duplicatedHeader = $(duplicatedHeaders[j])
$duplicatedHeader.attr('id', newId)
const $headerLink = $duplicatedHeader.find(`> a.anchor[href="#${id}"]`)
$headerLink.attr('href', `#${newId}`)
$headerLink.attr('title', newId)
}
}
}
}
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export function renderTOC (view) {
const tocs = view.find('.toc').toArray()
for (let i = 0; i < tocs.length; i++) {
const toc = $(tocs[i])
const id = `toc${i}`
toc.attr('id', id)
const target = $(`#${id}`)
target.html('')
/* eslint-disable no-unused-vars */
var toc = new window.Toc('doc', {
'level': 3,
'top': -1,
'class': 'toc',
'targetId': id,
'process': getHeaderContent
})
/* eslint-enable no-unused-vars */
if (target.text() === 'undefined') { target.html('') }
target.replaceWith(target.html())
}
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}
export function scrollToHash () {
const hash = location.hash
location.hash = ''
location.hash = hash
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}
function highlightRender (code, lang) {
if (!lang || /no(-?)highlight|plain|text/.test(lang)) { return }
code = S(code).escapeHTML().s
if (lang === 'sequence') {
return `<div class="sequence-diagram raw">${code}</div>`
} else if (lang === 'flow') {
return `<div class="flow-chart raw">${code}</div>`
} else if (lang === 'graphviz') {
return `<div class="graphviz raw">${code}</div>`
} else if (lang === 'mermaid') {
return `<div class="mermaid raw">${code}</div>`
}
const result = {
value: code
}
const showlinenumbers = /=$|=\d+$|=\+$/.test(lang)
if (showlinenumbers) {
let startnumber = 1
const matches = lang.match(/=(\d+)$/)
if (matches) { startnumber = parseInt(matches[1]) }
const lines = result.value.split('\n')
const linenumbers = []
for (let i = 0; i < lines.length - 1; i++) {
linenumbers[i] = `<span data-linenumber='${startnumber + i}'></span>`
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}
const continuelinenumber = /=\+$/.test(lang)
const linegutter = `<div class='gutter linenumber${continuelinenumber ? ' continue' : ''}'>${linenumbers.join('\n')}</div>`
result.value = `<div class='wrapper'>${linegutter}<div class='code'>${result.value}</div></div>`
}
return result.value
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}
import markdownit from 'markdown-it'
import markdownitContainer from 'markdown-it-container'
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export let md = markdownit('default', {
html: true,
breaks: true,
langPrefix: '',
linkify: true,
typographer: true,
highlight: highlightRender
})
window.md = md
md.use(require('markdown-it-abbr'))
md.use(require('markdown-it-footnote'))
md.use(require('markdown-it-deflist'))
md.use(require('markdown-it-mark'))
md.use(require('markdown-it-ins'))
md.use(require('markdown-it-sub'))
md.use(require('markdown-it-sup'))
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md.use(require('markdown-it-mathjax')({
beforeMath: '<span class="mathjax raw">',
afterMath: '</span>',
beforeInlineMath: '<span class="mathjax raw">\\(',
afterInlineMath: '\\)</span>',
beforeDisplayMath: '<span class="mathjax raw">\\[',
afterDisplayMath: '\\]</span>'
}))
md.use(require('markdown-it-imsize'))
md.use(require('markdown-it-emoji'), {
shortcuts: {}
})
window.emojify.setConfig({
blacklist: {
elements: ['script', 'textarea', 'a', 'pre', 'code', 'svg'],
classes: ['no-emojify']
},
img_dir: `${serverurl}/build/emojify.js/dist/images/basic`,
ignore_emoticons: true
})
md.renderer.rules.emoji = (token, idx) => window.emojify.replace(`:${token[idx].markup}:`)
function renderContainer (tokens, idx, options, env, self) {
tokens[idx].attrJoin('role', 'alert')
tokens[idx].attrJoin('class', 'alert')
tokens[idx].attrJoin('class', `alert-${tokens[idx].info.trim()}`)
return self.renderToken(...arguments)
}
md.use(markdownitContainer, 'success', { render: renderContainer })
md.use(markdownitContainer, 'info', { render: renderContainer })
md.use(markdownitContainer, 'warning', { render: renderContainer })
md.use(markdownitContainer, 'danger', { render: renderContainer })
md.renderer.rules.image = function (tokens, idx, options, env, self) {
tokens[idx].attrJoin('class', 'raw')
return self.renderToken(...arguments)
}
md.renderer.rules.list_item_open = function (tokens, idx, options, env, self) {
tokens[idx].attrJoin('class', 'raw')
return self.renderToken(...arguments)
}
md.renderer.rules.blockquote_open = function (tokens, idx, options, env, self) {
tokens[idx].attrJoin('class', 'raw')
return self.renderToken(...arguments)
}
md.renderer.rules.heading_open = function (tokens, idx, options, env, self) {
tokens[idx].attrJoin('class', 'raw')
return self.renderToken(...arguments)
}
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md.renderer.rules.fence = (tokens, idx, options, env, self) => {
const token = tokens[idx]
const info = token.info ? md.utils.unescapeAll(token.info).trim() : ''
let langName = ''
let highlighted
if (info) {
langName = info.split(/\s+/g)[0]
if (/!$/.test(info)) token.attrJoin('class', 'wrap')
token.attrJoin('class', options.langPrefix + langName.replace(/=$|=\d+$|=\+$|!$|=!$/, ''))
token.attrJoin('class', 'hljs')
token.attrJoin('class', 'raw')
}
if (options.highlight) {
highlighted = options.highlight(token.content, langName) || md.utils.escapeHtml(token.content)
} else {
highlighted = md.utils.escapeHtml(token.content)
}
if (highlighted.indexOf('<pre') === 0) {
return `${highlighted}\n`
}
return `<pre><code${self.renderAttrs(token)}>${highlighted}</code></pre>\n`
}
/* Defined regex markdown it plugins */
import Plugin from 'markdown-it-regexp'
// youtube
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const youtubePlugin = new Plugin(
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// regexp to match
/{%youtube\s*([\d\D]*?)\s*%}/,
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(match, utils) => {
const videoid = match[1]
if (!videoid) return
const div = $('<div class="youtube raw"></div>')
div.attr('data-videoid', videoid)
const thumbnailSrc = `//img.youtube.com/vi/${videoid}/hqdefault.jpg`
const image = `<img src="${thumbnailSrc}" />`
div.append(image)
const icon = '<i class="icon fa fa-youtube-play fa-5x"></i>'
div.append(icon)
return div[0].outerHTML
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}
)
// vimeo
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const vimeoPlugin = new Plugin(
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// regexp to match
/{%vimeo\s*([\d\D]*?)\s*%}/,
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(match, utils) => {
const videoid = match[1]
if (!videoid) return
const div = $('<div class="vimeo raw"></div>')
div.attr('data-videoid', videoid)
const icon = '<i class="icon fa fa-vimeo-square fa-5x"></i>'
div.append(icon)
return div[0].outerHTML
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}
)
// gist
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const gistPlugin = new Plugin(
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// regexp to match
/{%gist\s*([\d\D]*?)\s*%}/,
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(match, utils) => {
const gistid = match[1]
const code = `<code data-gist-id="${gistid}"/>`
return code
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}
)
// TOC
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const tocPlugin = new Plugin(
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// regexp to match
/^\[TOC\]$/i,
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(match, utils) => '<div class="toc"></div>'
)
// slideshare
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const slidesharePlugin = new Plugin(
// regexp to match
/{%slideshare\s*([\d\D]*?)\s*%}/,
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(match, utils) => {
const slideshareid = match[1]
const div = $('<div class="slideshare raw"></div>')
div.attr('data-slideshareid', slideshareid)
return div[0].outerHTML
}
)
// speakerdeck
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const speakerdeckPlugin = new Plugin(
// regexp to match
/{%speakerdeck\s*([\d\D]*?)\s*%}/,
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(match, utils) => {
const speakerdeckid = match[1]
const div = $('<div class="speakerdeck raw"></div>')
div.attr('data-speakerdeckid', speakerdeckid)
return div[0].outerHTML
}
)
// pdf
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const pdfPlugin = new Plugin(
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// regexp to match
/{%pdf\s*([\d\D]*?)\s*%}/,
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(match, utils) => {
const pdfurl = match[1]
if (!isValidURL(pdfurl)) return match[0]
const div = $('<div class="pdf raw"></div>')
div.attr('data-pdfurl', pdfurl)
return div[0].outerHTML
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}
)
// yaml meta, from https://github.com/eugeneware/remarkable-meta
function get (state, line) {
const pos = state.bMarks[line]
const max = state.eMarks[line]
return state.src.substr(pos, max - pos)
}
function meta (state, start, end, silent) {
if (start !== 0 || state.blkIndent !== 0) return false
if (state.tShift[start] < 0) return false
if (!get(state, start).match(/^---$/)) return false
const data = []
for (var line = start + 1; line < end; line++) {
const str = get(state, line)
if (str.match(/^(\.{3}|-{3})$/)) break
if (state.tShift[line] < 0) break
data.push(str)
}
if (line >= end) return false
try {
md.meta = window.jsyaml.safeLoad(data.join('\n')) || {}
delete md.metaError
} catch (err) {
md.metaError = err
console.warn(err)
return false
}
state.line = line + 1
return true
}
function metaPlugin (md) {
md.meta = md.meta || {}
md.block.ruler.before('code', 'meta', meta, {
alt: []
})
}
md.use(metaPlugin)
md.use(youtubePlugin)
md.use(vimeoPlugin)
md.use(gistPlugin)
md.use(tocPlugin)
md.use(slidesharePlugin)
md.use(speakerdeckPlugin)
md.use(pdfPlugin)
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export default {
md
}