git ssb

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var fs = require('fs')
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var path = require('path')
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var pull = require('pull-stream')
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var cat = require('pull-cat')
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var paramap = require('pull-paramap')
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var h = require('hyperscript')
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var ph = require('pull-hyperscript')
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var marked = require('../vendor/ssb-marked')
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var qs = require('querystring')
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var u = require('./util')
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var multicb = require('multicb')
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var RenderMsg = require('./render-msg')
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var Highlight = require('highlight.js')
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var md = require('ssb-markdown')
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var Diff = require('diff')
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var lru = require('hashlru')
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var maxWordLength = 80
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var truncateWordsRe = new RegExp('[^\\s<>&"]{' + (maxWordLength+1) + ',}')
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function truncateWord(word) {
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  var len = maxWordLength - 5 // "…[##]"
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  var truncatedLength = word.length - len
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  return word.substr(0, len) + '…<sub>[' + truncatedLength + ']</sub>'
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}
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function truncateWords(text) {
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  // truncate long words to avoid horizontal scrollbar
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  return text.replace(truncateWordsRe, truncateWord)
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}
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module.exports = Render
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function MdRenderer(render) {
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  marked.Renderer.call(this, {})
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  this.render = render
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}
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MdRenderer.prototype = new marked.Renderer()
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MdRenderer.prototype.urltransform = function (href) {
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  return this.render.toUrl(href)
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}
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MdRenderer.prototype.image = function (ref, title, text) {
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  if (ref[0] !== '&') return this.link(ref, title, text)
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  var alt = this.render.getImageAlt(ref, text)
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  if (alt.length > 60) alt = alt.substr(0, 60) + '…'
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  return (/^video:/.test(text) ? h('video', {
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    controls: 'controls',
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    src: this.render.toUrl(ref),
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    title: u.unescapeHTML(title) || undefined
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  }, '\n' + alt) : /^audio:/.test(text) ? h('audio', {
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    controls: 'controls',
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    src: this.render.toUrl(ref),
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    title: u.unescapeHTML(title) || undefined
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  }, '\n' + alt) : h('img', {
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    src: this.render.imageUrl(ref),
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    alt: alt,
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    title: u.unescapeHTML(title) || undefined
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  })).outerHTML
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}
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MdRenderer.prototype.link = function (ref, title, text) {
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  var href = this.urltransform(ref)
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  var name = href && /^\/(&|%26)/.test(href) && (title || text)
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  if (name) {
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    href += (/\?/.test(href) ? '&' : '?') +
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      'filename=' + encodeURIComponent(name)
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  }
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  if (u.isRef(ref)) {
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    var myName = this.render.app.getNameSync(ref)
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    if (myName) title = title ? title + ' (' + myName + ')' : myName
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  }
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  var hrefToken = href !== false ? u.token() : undefined
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  var a = h('a', {
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    class: href === false ? 'bad' : undefined,
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    href: href !== false ? hrefToken : undefined,
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    title: title || undefined
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  })
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  text = truncateWords(text)
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  // text is already html-escaped
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  a.innerHTML = text
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  var html = a.outerHTML
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  // href is already html-escaped
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  if (hrefToken) html = html.replace(hrefToken, href)
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  var link = this.render._mentionsByLink[ref]
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  if (link && link.type === 'text/x-markdown') {
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    html += h('sup', ' [', h('a', {
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      href: this.render.toUrl('/markdown/' + ref),
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      title: 'view rendered markdown'
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    }, 'md'), ']').outerHTML
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  }
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  return html
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}
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MdRenderer.prototype.mention = function (preceding, id) {
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  var href = this.urltransform(id)
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  var myName = this.render.app.getNameSync(id)
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  var html = (preceding||'') + h('a', {
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    class: href === false ? 'bad' : undefined,
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    href: href !== false ? href : undefined,
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    title: myName || undefined,
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  }, id.length > 50 ? id.slice(0, 8) + '…' : id).outerHTML
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  var link = this.render._mentionsByLink[id]
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  if (link && link.type === 'text/x-markdown') {
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    html += h('sup', ' [', h('a', {
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      href: this.render.toUrl('/markdown/' + id),
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      title: 'view rendered markdown'
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    }, 'md'), ']').outerHTML
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  }
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  return html
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}
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MdRenderer.prototype.code = function (code, lang, escaped) {
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  if (this.render.opts.codeInTextareas) {
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    return h('div', h('textarea', {
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      cols: 80,
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      rows: u.rows(code),
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      style: 'font-family: monospace',
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      innerHTML: escaped ? code : u.escapeHTML(code)
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    })).outerHTML
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  } else {
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    return marked.Renderer.prototype.code.call(this, code, lang, escaped)
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  }
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}
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function lexerRenderEmoji(emoji) {
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  var el = this.renderer.render.emoji(emoji)
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  return el && el.outerHTML || el
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}
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function Render(app, opts) {
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  this.app = app
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  this.opts = opts
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  this.markedOpts = {
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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: lexerRenderEmoji,
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    renderer: new MdRenderer(this),
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    highlight: this.highlight.bind(this),
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  }
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}
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Render.prototype.emoji = function (emoji) {
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  var name = ':' + emoji + ':'
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  var link = this._mentions && this._mentions[name]
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  if (link && link.link) {
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    this.app.reverseEmojiNameCache.set(emoji, link.link)
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    return h('img.ssb-emoji', {
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      src: this.opts.img_base + link.link,
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      alt: name
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        + (link.size != null ? ' (' + this.formatSize(link.size) + ')' : ''),
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      height: 17,
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      title: name,
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    })
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  }
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  return name
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}
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/* disabled until it can be done safely without breaking html
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function fixSymbols(str) {
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  // Dillo doesn't do fallback fonts, so specifically render fancy characters
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  // with Symbola
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  return str.replace(/[^\u0000-\u00ff]+/, function ($0) {
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    return '<span class="symbol">' + $0 + '</span>'
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  })
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}
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*/
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Render.prototype.symbolify = function (text) {
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  var arr = text.split(u.symbolRegex)
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  for (var i = 1; i < arr.length; i += 2) {
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    arr[i] = h('span.symbol', arr[i])
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  }
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  return arr
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}
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Render.prototype.markdown = function (text, mentions, opts) {
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  if (!text) return ''
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  var ssbcMd = opts && opts.ssbcMd
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  var mentionsObj = this._mentions = {}
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  var mentionsByLink = this._mentionsByLink = {}
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  if (Array.isArray(mentions)) mentions.forEach(function (link) {
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    if (!link) return
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    else if (link.emoji)
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      mentionsObj[':' + link.name + ':'] = link
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    else if (link.name && link.link && link.link[0] === '@')
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      mentionsObj['@' + link.name] = link.link
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    else if (link.host === 'http://localhost:7777')
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      mentionsObj[link.href] = link.link
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    if (link.link)
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      mentionsByLink[link.link +
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        (link.query && typeof link.query.unbox === 'string' ?
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          '?unbox=' + link.query.unbox.replace(/\s/g, '+') : '') +
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        (link.key ? '#' + link.key : '')] = link
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  })
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  var self = this
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  var out = ssbcMd ? md.block(String(text), {
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    toUrl: function (ref) { return self.toUrl(ref) },
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    imageLink: function (ref) { return self.imageUrl(ref) }
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  }) : marked(u.toString(text), this.markedOpts)
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  delete this._mentions
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  delete this._mentionsByLink
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  return out //fixSymbols(out)
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}
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Render.prototype.imageUrl = function (ref) {
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  var m = /^blobstore:(.*)/.exec(ref)
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  if (m) ref = m[1]
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  ref = String(ref).replace(/#/, '%23')
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  return this.opts.img_base + ref
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}
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Render.prototype.getImageAlt = function (id, fallback) {
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  var link = this._mentionsByLink[id]
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  if (!link) return fallback
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  var name = String(u.unescapeHTML(link.name || fallback))
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    .replace(/^(video|audio):/, '')
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  return name
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    + (link.type && !/\.\S+$/.test(name) ? ' [' + link.type + ']' : '')
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    + (link.size != null ? ' (' + this.formatSize(link.size) + ')' : '')
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}
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Render.prototype.formatSize = function (size) {
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  if (size < 1024) return size + ' B'
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  size /= 1024
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  if (size < 1024) return size.toFixed(2) + ' KB'
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  size /= 1024
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  return size.toFixed(2) + ' MB'
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}
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Render.prototype.linkify = function (text, opts) {
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  var ellipsis = opts && opts.ellipsis
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  var arr = text.split(u.ssbRefEncRegex)
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  for (var i = 1; i < arr.length; i += 2) {
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    var id = arr[i]
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    var text = ellipsis && id.length > 8 ? id.substr(0, 8) + '…' : id
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    arr[i] = h('a', {href: this.toUrlEnc(id)}, text)
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  }
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  return arr
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}
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Render.prototype.toUrlEnc = function (href) {
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  var url = this.toUrl(href)
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  if (url) return url
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  try { href = decodeURIComponent(href) }
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  catch (e) { return false }
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  return this.toUrl(href)
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}
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Render.prototype.toUrl = function (href) {
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  if (!href) return href
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  var mentions = this._mentions
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  if (mentions && href in this._mentions) href = this._mentions[href]
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  if (/^ssb:/.test(href)) href = u.translateFromURI(href) || href
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  if (/^ssb-blob:\/\//.test(href)) {
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    return this.opts.base + 'zip/' + href.substr(11)
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  }
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  switch (href[0]) {
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    case '%':
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      var parts = href.split('?')
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      var hash = parts.shift()
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      var query = parts.join('?')
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      if (!u.isRef(hash)) return false
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      return this.opts.base +
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        (this.opts.encode_msgids ? encodeURIComponent(hash) : hash)
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        + (query ? '?' + query : '')
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    case '@':
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      if (!u.isRef(href.replace(/\?.*/, ''))) return false
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      return this.opts.base + href
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    case '&':
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      var parts = href.split('#')
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      var hash = parts.shift()
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      var key = parts.shift()
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      var fragment = parts.join('#')
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      parts = hash.split('?')
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      hash = parts.shift()
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      query = parts.join('?')
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      if (!u.isRef(hash)) return false
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      return this.opts.blob_base + hash
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        + (query ? '?' + query : '')
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        + (key ? encodeURIComponent('#' + key) : '')
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        + (fragment ? '#' + fragment : '')
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    case '#': return this.opts.base + 'channel/' +
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      encodeURIComponent(href.substr(1).toLowerCase())
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    case '/': return this.opts.base + href.substr(1)
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    case '?': return this.opts.base + 'search?q=' + encodeURIComponent(href)
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  }
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  var m = /^blobstore:(.*)/.exec(href)
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  if (m) return this.opts.blob_base + m[1]
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  if (/^javascript:/.test(href)) return false
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  if (!/^[a-z0-9]*:/.test(href)) return 'http://' + href
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  return href
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}
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Render.prototype.lockIcon = function () {
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  return h('span.symbol', '🔒')
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}
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Render.prototype.avatarImage = function (link, cb) {
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  var self = this
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  if (!link) return cb(), ''
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  if (typeof link === 'string') link = {link: link}
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  var img = h('img.ssb-avatar-image', {
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    width: 72,
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    alt: ' '
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  })
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  if (link.image) gotAbout(null, link)
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  else self.app.getAbout(link.link, gotAbout)
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  function gotAbout(err, about) {
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    if (err) console.trace(err)
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    img.src = about && about.image ? self.imageUrl(about.image)
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      : self.toUrl('/static/fallback.png')
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    cb()
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  }
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  return img
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}
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const errors = lru(100)
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function logUniqueError(err) {
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  // Avoid logging the same error many times.
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  if (errors.get(err.stack)) return
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  errors.set(err.stack, true)
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  console.error(err)
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}
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Render.prototype.prepareLink = function (link, cb) {
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  if (typeof link === 'string') link = {link: link}
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  if (link.name || !link.link) cb(null, link)
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  else this.app.getAbout(link.link, function (err, about) {
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    // Don't let this function fail, instead, log the error once.
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    if (err) logUniqueError(err)
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    link.name = about && (about.name || about.title) || (link.link.substr(0, 8) + '…')
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    if (link.name && link.name[0] === link.link[0]) {
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      link.name = link.name.substr(1)
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    }
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    cb(null, link)
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  })
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}
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Render.prototype.prepareLinks = function (links, cb) {
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  var self = this
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  if (!links) return cb()
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  var done = multicb({pluck: 1})
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  if (Array.isArray(links)) links.forEach(function (link) {
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    self.prepareLink(link, done())
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  })
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  done(cb)
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}
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Render.prototype.idLink = function (link, cb) {
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  var self = this
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  if (!link) return cb(), ''
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  var a = h('a', ' ')
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  self.prepareLink(link, function (err, link) {
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    if (err) return cb(err)
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    a.href = self.toUrl(link.link)
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    var sigil = link.link && link.link[0] || '@'
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    var name = link.name || String(link.link).substr(1, 8) + '…'
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    a.childNodes[0].textContent = sigil + name
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    cb()
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  })
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  return a
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}
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// %NM8tXGBBDKKcpRbbyd/5uN1p/2OtBMFDylLMDPGoq8Q=.sha256
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var idRegex = /^[A-Za-z0-9._\-+=/]*[A-Za-z0-9_\-+=/]$/
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Render.prototype.idLinkCopyable = function (link, cb) {
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  var self = this
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  if (!self.app.copyableIds) return idLink(link, cb)
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  if (!link) return cb(), ''
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  var a = h('a', ' ')
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  self.prepareLink(link, function (err, link) {
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    if (err) return cb(err)
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    a.href = self.toUrl(link.link)
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    var name = link.name || String(link.link).substr(1, 8) + '…'
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    if (idRegex.test(name)) a.childNodes[0].textContent = '@' + name
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    else {
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      var name = link.name.startsWith('~') ? link.name : '@' + link.name
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      a.className = 'id-copyable-link'
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      a.innerHTML = h('span', [
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        h('span.id-deemphasize', '['),
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        h('span.id-name', name),
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        h('span.id-deemphasize', ']'
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          + '(', h('span.id-inner', link.link), ')'),
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      ]).innerHTML
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    }
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    cb()
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  })
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  return a
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}
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Render.prototype.privateLine = function (opts, cb) {
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  var recps = opts.recps
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  var isAuthorRecp = opts.isAuthorRecp
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  var done = multicb({pluck: 1, spread: true})
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  var self = this
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  var el = h('div.recps',
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    opts.noLockIcon ? '' : self.lockIcon(),
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    !isAuthorRecp ? [
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      h('span', {title: 'Author is not a recipient'}, '[!]'), ' '
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    ] : '',
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    Array.isArray(recps)
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      ? recps.map(function (recp) {
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        return [' ', self.idLink(recp, done())]
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      }) : '')
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  done(cb)
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  return el
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}
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Render.prototype.msgIdLink = function (id, cb) {
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  var self = this
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  var el = h('span')
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  var a = h('a', {href: self.toUrl(id)}, id)
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  self.app.getMsgDecrypted(id, function (err, msg) {
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    if (err) return el.appendChild(u.renderError(err)), cb()
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    var renderMsg = new RenderMsg(self, self.app, msg, {wrap: false, serve: self.serve})
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    renderMsg.title(function (err, title) {
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      if (err) return el.appendChild(u.renderError(err)), cb()
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      a.childNodes[0].textContent = title
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      cb()
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    })
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  })
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  return a
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}
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Render.prototype.phMsgLink = function (msg) {
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  var self = this
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  return u.readNext(function (cb) {
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    self.app.unboxMsg(msg, function (err, msg) {
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      if (err) return cb(err)
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      var renderMsg = new RenderMsg(self, self.app, msg, {wrap: false, serve: self.serve})
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      renderMsg.title(function (err, title) {
445
        if (err) return cb(err)
446
        cb(null, ph('a', {href: self.toUrl(msg.key)}, u.escapeHTML(title)))
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      })
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    })
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  })
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}
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Render.prototype.renderMsg = function (msg, opts, cb) {
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  var self = this
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  self.app.filterMsg(msg, opts, function (err, show) {
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    if (err) return cb(err)
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    if (show) new RenderMsg(self, self.app, msg, opts).message(cb)
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    else cb(null, '')
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  })
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}
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Render.prototype.renderFeeds = function (opts) {
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  var self = this
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  var limit = Number(opts.limit)
464
  return pull(
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    paramap(function (msg, cb) {
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      self.renderMsg(msg, opts, cb)
467
    }, 4),
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    pull.filter(Boolean),
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    limit && pull.take(limit)
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  )
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}
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Render.prototype.gitCommitBody = function (body) {
474
  if (!body) return ''
475
  var isMarkdown = !/^# Conflicts:$/m.test(body)
476
  return isMarkdown
477
    ? h('div', {innerHTML: this.markdown('\n' + body)})
478
    : h('pre', this.linkify('\n' + body))
479
}
480
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Render.prototype.getName = function (id, cb) {
482
  // TODO: consolidate the get name/link functions
483
  var self = this
484
  switch (id && id[0]) {
485
    case '%':
486
      return self.app.getMsgDecrypted(id, function (err, msg) {
487
        if (err && err.name == 'NotFoundError')
488
          return cb(null, String(id).substring(0, 8) + '…(missing)')
489
        if (err) return fallback()
490
        new RenderMsg(self, self.app, msg, {wrap: false}).title(cb)
491
      })
492
    case '@': // fallthrough
493
    case '&':
494
      return self.app.getAbout(id, function (err, about) {
495
        if (err || !about || !about.name) return fallback()
496
        cb(null, about.name)
497
      })
498
    default:
499
      return cb(null, String(id))
500
  }
501
  function fallback() {
502
    cb(null, String(id).substr(0, 8) + '…')
503
  }
504
}
505
506
Render.prototype.getNameLink = function (id, opts, cb) {
507
  if (!cb && typeof opts === 'function') cb = opts, opts = null
508
  if (typeof id === 'object' && id !== null && typeof id.link === 'string') {
509
    var link = id
510
    id = link.link
511
    if (typeof link.name === 'string') {
512
      return cb(null, h('a', {href: self.toUrl(id)},
513
        u.truncate(link.name, length)))
514
    }
515
  }
516
  var length = opts && opts.length || Infinity
517
  var self = this
518
  self.getName(id, function (err, name) {
519
    if (err) return cb(err)
520
    cb(null, h('a', {href: self.toUrl(id)}, u.truncate(name, length)))
521
  })
522
}
523
524
Render.prototype.npmAuthorLink = function (author) {
525
  if (!author) return
526
  var url = u.ifString(author.url)
527
  var email = u.ifString(author.email)
528
  var name = u.ifString(author.name)
529
  var title
530
  if (!url && u.isRef(name)) url = name, name = null
531
  if (!url && !email) return name || JSON.stringify(author)
532
  if (!url && email) url = 'mailto:' + email, email = null
533
  if (!name && email) name = email, email = null
534
  var feed = u.isRef(url) && url[0] === '@' && url
535
  if (feed && name) title = this.app.getNameSync(feed)
536
  if (feed && name && name[0] != '@') name = '@' + name
537
  if (feed && !name) name = this.app.getNameSync(feed) // TODO: async
538
  if (url && !name) name = url
539
  var secondaryLink = email && h('a', {href: this.toUrl('mailto:' + email)}, email)
540
  return [
541
    h('a', {href: this.toUrl(url), title: title}, name),
542
    secondaryLink ? [' (', secondaryLink, ')'] : ''
543
  ]
544
}
545
546
// auto-highlight is slow
547
var useAutoHighlight = false
548
549
Render.prototype.highlight = function (code, lang) {
550
  if (code.length > 100000) return u.escapeHTML(code)
551
  if (!lang && /^#!\/bin\/[^\/]*sh$/m.test(code)) lang = 'sh'
552
  try {
553
    return lang
554
      ? Highlight.highlight(lang, code).value
555
      : useAutoHighlight
556
      ? Highlight.highlightAuto(code).value
557
      : u.escapeHTML(code)
558
  } catch(e) {
559
    if (!/^Unknown language/.test(e.message)) console.trace(e)
560
    return u.escapeHTML(code)
561
  }
562
}
563
564
Render.prototype.npmPackageMentions = function (links, cb) {
565
  var self = this
566
  var pkgLinks = u.toArray(links).filter(function (link) {
567
    return /^npm:/.test(link.name)
568
  })
569
  if (pkgLinks.length === 0) return cb(null, '')
570
  var done = multicb({pluck: 1})
571
  pkgLinks.forEach(function (link) {
572
    self.npmPackageMention(link, {}, done())
573
  })
574
  done(function (err, mentionEls) {
575
    cb(null, h('table',
576
      h('thead', h('tr',
577
        h('th', 'package'),
578
        h('th', 'version'),
579
        h('th', 'tag'),
580
        h('th', 'size'),
581
        h('th', 'tarball'),
582
        h('th', 'readme')
583
      )),
584
      h('tbody', mentionEls)
585
    ))
586
  })
587
}
588
589
Render.prototype.npmPrebuildMentions = function (links, cb) {
590
  var self = this
591
  var prebuildLinks = u.toArray(links).filter(function (link) {
592
    return /^prebuild:/.test(link.name)
593
  })
594
  if (prebuildLinks.length === 0) return cb(null, '')
595
  var done = multicb({pluck: 1})
596
  prebuildLinks.forEach(function (link) {
597
    self.npmPrebuildMention(link, {}, done())
598
  })
599
  done(function (err, mentionEls) {
600
    cb(null, h('table',
601
      h('thead', h('tr',
602
        h('th', 'name'),
603
        h('th', 'version'),
604
        h('th', 'runtime'),
605
        h('th', 'abi'),
606
        h('th', 'platform+libc'),
607
        h('th', 'arch'),
608
        h('th', 'size'),
609
        h('th', 'tarball')
610
      )),
611
      h('tbody', mentionEls)
612
    ))
613
  })
614
}
615
616
Render.prototype.npmPackageMention = function (link, opts, cb) {
617
  var nameRegex = /'prebuild:{name}-v{version}-{runtime}-v{abi}-{platform}{libc}-{arch}.tar.gz'/
618
  var parts = String(link.name).replace(/\.tgz$/, '').split(':')
619
  var name = parts[1]
620
  var version = parts[2]
621
  var distTag = parts[3]
622
  var self = this
623
  var done = multicb({pluck: 1, spread: true})
624
  var base = '/npm/' + (opts.author ? u.escapeId(link.author) + '/' : '')
625
  var pathWithAuthor = opts.withAuthor ? '/npm/' +
626
    u.escapeId(link.author) +
627
      (opts.name ? '/' + opts.name +
628
        (opts.version ? '/' + opts.version +
629
          (opts.distTag ? '/' + opts.distTag + '/' : '') : '') : '') : ''
630
  self.app.getAbout(link.author, done())
631
  self.app.getBlobState(link.link, done())
632
  done(function (err, about, blobState) {
633
    if (err) return cb(err)
634
    cb(null, h('tr', [
635
      opts.withAuthor ? h('td', h('a', {
636
        href: self.toUrl(pathWithAuthor),
637
        title: 'publisher'
638
      }, about.name || u.truncate(link.author, 8)), ' ') : '',
639
      h('td', h('a', {
640
        href: self.toUrl(base + name),
641
        title: 'package name'
642
      }, name), ' '),
643
      h('td', version ? [h('a', {
644
        href: self.toUrl(base + name + '/' + version),
645
        title: 'package version'
646
      }, version), ' '] : ''),
647
      h('td', distTag ? [h('a', {
648
        href: self.toUrl(base + name + '//' + distTag),
649
        title: 'dist-tag'
650
      }, distTag), ' '] : ''),
651
      h('td', {align: 'right'}, link.size != null ? [h('span', {
652
        title: 'tarball size'
653
      }, self.formatSize(link.size)), ' '] : ''),
654
      h('td', typeof link.link === 'string' ? h('code', h('a', {
655
        href: self.toUrl('/links/' + link.link),
656
        title: 'package tarball'
657
      }, link.link.substr(0, 8) + '…')) : ''),
658
      h('td',
659
        blobState === 'wanted' ?
660
        'fetching...'
661
        : blobState ? h('a', {
662
          href: self.toUrl('/npm-readme/' + encodeURIComponent(link.link)),
663
          title: 'package contents'
664
        }, 'readme')
665
        : self.blobFetchForm(link.link))
666
    ]))
667
  })
668
}
669
670
Render.prototype.blobFetchForm = function (id) {
671
  return h('form', {action: '', method: 'post'},
672
    h('input', {type: 'hidden', name: 'action', value: 'want-blobs'}),
673
    h('input', {type: 'hidden', name: 'async_want', value: '1'}),
674
    h('input', {type: 'hidden', name: 'blob_ids', value: id}),
675
    h('input', {type: 'submit', value: 'fetch'})
676
  )
677
}
678
679
Render.prototype.npmPrebuildNameRegex = /^prebuild:(.*?)-v([0-9]+\.[0-9]+.*?)-(.*?)-v(.*?)-(.*?)-(.*?)\.tar\.gz$/
680
681
Render.prototype.npmPrebuildMention = function (link, opts, cb) {
682
  var m = this.npmPrebuildNameRegex.exec(link.name)
683
  if (!m) return cb(null, '')
684
  var name = m[1], version = m[2], runtime = m[3],
685
      abi = m[4], platformlibc = m[5], arch = m[6]
686
  var self = this
687
  var done = multicb({pluck: 1, spread: true})
688
  var base = '/npm-prebuilds/' + (opts.author ? u.escapeId(link.author) + '/' : '')
689
  self.app.getAbout(link.author, done())
690
  self.app.getBlobState(link.link, done())
691
  done(function (err, about, blobState) {
692
    if (err) return cb(err)
693
    cb(null, h('tr', [
694
      opts.withAuthor ? h('td', h('a', {
695
        href: self.toUrl(link.author)
696
      }, about.name || u.truncate(link.author, 8)), ' ') : '',
697
      h('td', h('a', {
698
        href: self.toUrl(base + name)
699
      }, name), ' '),
700
      h('td', h('a', {
701
        href: self.toUrl('/npm/' + name + '/' + version)
702
      }, version), ' '),
703
      h('td', runtime, ' '),
704
      h('td', abi, ' '),
705
      h('td', platformlibc, ' '),
706
      h('td', arch, ' '),
707
      h('td', {align: 'right'}, link.size != null ? [
708
        self.formatSize(link.size), ' '
709
      ] : ''),
710
      h('td', typeof link.link === 'string' ? h('code', h('a', {
711
        href: self.toUrl('/links/' + link.link)
712
      }, link.link.substr(0, 8) + '…')) : ''),
713
      h('td',
714
        blobState === 'wanted' ?
715
        'fetching...'
716
        : blobState ? ''
717
        : self.blobFetchForm(link.link))
718
    ]))
719
  })
720
}
721
722
Render.prototype.friendsList = function (prefix) {
723
  prefix = prefix || '/'
724
  var self = this
725
  return pull(
726
    paramap(function (item, cb) {
727
      if (typeof item === 'string') item = {feed: item}
728
      var id = item.feed
729
      self.app.getAbout(item.feed, function (err, about) {
730
        var name = about && about.name || id.substr(0, 8) + '…'
731
        cb(null, [
732
          h('a', {href: self.toUrl(prefix + id)}, name),
733
          item.msg ? h('a', {href: self.toUrl(item.msg.key)}, '₁') : '',
734
          item.msg2 ? h('a', {href: self.toUrl(item.msg2.key)}, '₂') : ''
735
        ])
736
      })
737
    }, 8),
738
    function (read) {
739
      var count = 0
740
      var ended
741
      return function (abort, cb) {
742
        if (ended) return cb(ended)
743
        read(abort, function (end, el) {
744
          if (end === true) {
745
            ended = true
746
            cb(null, '(' + count + ')')
747
          } else {
748
            count++
749
            cb(end, u.toHTML(el) + ' ')
750
          }
751
        })
752
      }
753
    }
754
  )
755
}
756
757
Render.prototype.textEditDiffTable = function (oldMsg, newMsg) {
758
  var oldC = oldMsg && oldMsg.value.content || {}
759
  var newC = newMsg && newMsg.value.content || {}
760
  var oldText = String(oldC.text || oldC.description || '')
761
  var newText = String(newC.text || newC.description || '')
762
  var diff = Diff.structuredPatch('', '', oldText, newText)
763
  var self = this
764
  // note: this structure is duplicated in lib/render.js
765
  return h('table', {class: 'diff-table'}, [
766
    diff.hunks.map(function (hunk) {
767
      var oldLine = hunk.oldStart
768
      var newLine = hunk.newStart
769
      return [
770
        h('tr', [
771
          h('td', {colspan: 2}),
772
          h('td', {colspan: 2}, h('pre',
773
            '@@ -' + oldLine + ',' + hunk.oldLines + ' ' +
774
            '+' + newLine + ',' + hunk.newLines + ' @@'))
775
        ]),
776
        hunk.lines.map(function (line) {
777
          var s = line[0]
778
          if (s == '\\') return
779
          var lineNums = [s == '+' ? '' : oldLine++, s == '-' ? '' : newLine++]
780
          return [
781
            h('tr', {
782
              class: s == '+' ? 'diff-new' : s == '-' ? 'diff-old' : ''
783
            }, [
784
              lineNums.map(function (num, i) {
785
                return h('td', String(num))
786
              }),
787
              h('td', {class: 'diff-sigil'}, h('code', s)),
788
              h('td', {class: 'diff-line'}, {innerHTML:
789
                u.unwrapP(self.markdown(line.substr(1),
790
                  s == '-' ? oldC.mentions : newC.mentions))
791
              })
792
            ])
793
          ]
794
        })
795
      ]
796
    })
797
  ])
798
}
799
800