const cheerio = require('cheerio')
function HtmlWebpackAlterDataPlugin (options) {
this.options = {
assetsConstants: false,
debug: false,
chunkFilenameReplacement: []
}
options && Object.assign(this.options, options);
}
HtmlWebpackAlterDataPlugin.prototype.apply = function (compiler) {
var self = this
function processHtml(co, compilation) {
self.options.chunkFilenameReplacement.forEach(function(replacement) {
co(replacement.tag).each(function(i, elem) {
var tag = co(elem)[0]
if ( (!tag)
|| (!('attribs' in tag))
|| (!(replacement.attribute in tag.attribs))
) {
return
}
var url = tag.attribs[replacement.attribute]
if (url[0] != '~') {
return
}
url = url.substring(1)
var hash = url.slice(url.indexOf('#'))
var path = url.slice(0, url.indexOf('#'))
var file = path.slice(url.lastIndexOf('/') + 1)
var path = path.slice(0, url.lastIndexOf('/') + 1)
var filename = file.slice(0, file.indexOf('.'))
var extension = file.slice(file.indexOf('.') + 1)
compilation.chunks.forEach(function(chunk) {
if (chunk.name != filename) {
return
}
chunk.files.forEach(function(file) {
if (!file.startsWith(path)) {
return
}
if (!file.endsWith('.' + extension)) {
return
}
tag.attribs[replacement.attribute] = '/' + file + hash
})
})
})
})
return co
}
compiler.hooks.compilation.tap('HtmlWebpackAlterDataPlugin', (compilation) => {
compilation.hooks.htmlWebpackPluginAfterHtmlProcessing.tapAsync('HtmlWebpackAlterDataPlugin', (data, cb) => {
if ('chunkFilenameReplacement' in this.options) {
var co = cheerio.load(data.html, {
recognizeSelfClosing: false,
lowerCaseTags: false,
lowerCaseAttributeNames: false,
decodeEntities: false,
})
co = processHtml(co, compilation)
co('script').each(function(i, elem) {
if (co(elem).attr('type') != 'text/x-template') {
return;
}
var script = cheerio.load(co(elem).html(), {
recognizeSelfClosing: false,
lowerCaseTags: false,
lowerCaseAttributeNames: false,
decodeEntities: false,
})
var scriptResult = processHtml(script, compilation).html()
co(co('script').get(i)).html(scriptResult)
})
data.html = co.html()
}
data.html = data.html.replace('', '')
cb(null, data)
})
})
compiler.hooks.emit.tap('HtmlWebpackAlterDataPlugin', (compilation) => {
if (!this.options.assetsConstants) {
return
}
fileContent = ''
compilation.chunks.forEach(function(chunk) {
chunk.files.forEach(function(file) {
var extension = file.slice(file.lastIndexOf('.') + 1)
line = 'asset.' + extension + '.' + chunk.name + ' = ' + '/' + file + '\n'
fileContent += line
})
})
compilation.assets[this.options.assetsConstants] = {
source: function() {
return fileContent;
},
size: function() {
return fileContent.length;
}
};
})
};
module.exports = HtmlWebpackAlterDataPlugin