58 lines
1.6 KiB
JavaScript
58 lines
1.6 KiB
JavaScript
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'use strict';
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var functions = require('../functions.js')
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var retrieveFile = functions.retrieveFile
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function mime (data) {
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var mime = 'image/jpeg'
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if (~data.indexOf('iVBORw0K'))
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mime = 'image/png'
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else if (~data.indexOf('R0lGODlh'))
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mime = 'image/gif'
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else if (~data.indexOf('<?xml'))
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mime = 'image/svg+xml'
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return mime
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}
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module.exports = {
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mime: mime,
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parser: function (window, absBasePath) {
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// <img>, <picture> <img>
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var imgs = window.document.getElementsByTagName('img')
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for (var i = 0, ilen = imgs.length; i < ilen; i++) {
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var img = imgs[i]
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if (img.getAttribute('src')) {
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var data = retrieveFile(absBasePath, img.getAttribute('src').trim(), true)
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img.setAttribute('src', "data:" + mime(data) + ";base64," + data)
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}
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}
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// <picture> <source>
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var pictures = window.document.getElementsByTagName('picture')
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for (var i = 0, ilen = pictures.length; i < ilen; i++) {
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var picture = pictures[i]
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var sources = picture.getElementsByTagName('source')
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for (var s = 0, slen = sources.length; s < slen; s++) {
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var source = sources[s]
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if (source.getAttribute('srcset')) {
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var data = retrieveFile(absBasePath, source.getAttribute('srcset').trim(), true)
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var type = source.getAttribute('type')
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source.setAttribute('srcset', "data:" + (type || mime(data)) + ";base64," + data)
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}
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}
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}
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}
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}
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