138 lines
3.5 KiB
JavaScript
138 lines
3.5 KiB
JavaScript
'use strict'
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var emojiNamedCharacters = require('emoji-named-characters')
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var marked = require('ssb-marked')
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var ssbref = require('ssb-ref')
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var mlib = require('ssb-msgs')
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var renderer = new marked.Renderer();
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// override to only allow external links or hashes, and correctly link to ssb objects
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renderer.urltransform = function (url) {
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var c = url.charAt(0)
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var hasSigil = (c == '@' || c == '&' || c == '%')
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if (this.options.sanitize && !hasSigil) {
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try {
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var prot = decodeURIComponent(unescape(url))
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.replace(/[^\w:]/g, '')
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.toLowerCase();
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} catch (e) {
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return false;
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}
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if (prot.indexOf('javascript:') === 0) {
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return false;
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}
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}
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var islink = ssbref.isLink(url)
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if (hasSigil && !islink && this.options.mentionNames) {
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// do a name lookup
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url = this.options.mentionNames[url.slice(1)]
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if (!url)
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return false
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islink = true
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}
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if (islink) {
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if (ssbref.isFeedId(url))
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return '#/profile/'+url
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else if (ssbref.isMsgId(url))
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return '#/msg/'+url
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else if (ssbref.isBlobId(url))
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return '#/webview/'+url
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}
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else if (url.indexOf('http') !== 0) {
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return false;
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}
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return url
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}
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// override to make http/s links external
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renderer.link = function(href, title, text) {
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href = this.urltransform(href)
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var out
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if (href !== false)
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out = '<a href="' + href + '"';
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else
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out = '<a class="bad"'
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if (title) {
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out += ' title="' + title + '"';
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}
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// make a popup if http/s
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if (href && href.indexOf('http') === 0)
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out += ' target="_blank"'
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out += '>' + text + '</a>';
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return out;
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};
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// override to support <video> tags (HACK)
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renderer.image = function (href, title, text) {
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href = href.replace(/^&/, '&')
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if (ssbref.isLink(href)) {
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if ((''+text).indexOf('.webm') >= 0) {
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var out = '<video loop=1 muted=1 src="http://localhost:7777/' + href + '?fallback=video" alt="' + text + '"'
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if (title) {
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out += ' title="' + title + '"'
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}
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out += '></video>'
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} else {
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var out = '<a href="#/webview/' + href + '"><img src="http://localhost:7777/' + href + '?fallback=img" alt="' + text + '"'
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if (title) {
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out += ' title="' + title + '"'
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}
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out += '></a>'
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}
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return out
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}
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return text
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}
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marked.setOptions({
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gfm: true,
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mentions: true,
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tables: true,
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breaks: true,
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pedantic: false,
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sanitize: true,
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smartLists: true,
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smartypants: false,
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emoji: renderEmoji,
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renderer: renderer
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});
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exports.block = function(text, mentionNames) {
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if (mentionNames && mentionNames.key && mentionNames.value) {
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// is a message, get the mentions links
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mentionNames = mlib.links(mentionNames.value.content.mentions, 'feed')
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}
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if (Array.isArray(mentionNames)) {
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// is an array of links, turn into an object map
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var n = {}
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mentionNames.forEach(function (link) {
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n[link.name] = link.link
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})
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mentionNames = n
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}
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return marked(''+(text||''), { mentionNames: mentionNames })
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}
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var emojiRegex = /(\s|>|^)?:([A-z0-9_]+):(\s|<|$)/g;
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exports.emojis = function (str) {
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return str.replace(emojiRegex, function(full, $1, $2, $3) {
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return ($1||'') + renderEmoji($2) + ($3||'')
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})
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}
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function renderEmoji (emoji) {
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return emoji in emojiNamedCharacters ?
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'<img src="./img/emoji/' + encodeURI(emoji) + '.png"'
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+ ' alt=":' + escape(emoji) + ':"'
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+ ' title=":' + escape(emoji) + ':"'
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+ ' class="emoji" align="absmiddle" height="20" width="20">'
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: ':' + emoji + ':'
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}
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