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baseUrl.js
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baseUrl.js
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const posthtml = require('posthtml')
const isUrl = require('is-url-superb')
const baseUrl = require('posthtml-base-url')
const {get, merge, isObject, isEmpty} = require('lodash')
const defaultConfig = require('../generators/posthtml/defaultConfig')
module.exports = async (html, config = {}, direct = false) => {
const url = direct ? config : get(config, 'baseURL')
const posthtmlOptions = merge(defaultConfig, get(config, 'build.posthtml.options', {}))
// Handle `baseUrl` as a string
if (typeof url === 'string' && url.length > 0) {
html = rewriteVMLs(html, url)
return posthtml([
baseUrl({url, allTags: true, styleTag: true, inlineCss: true})
])
.process(html, posthtmlOptions)
.then(result => result.html)
}
// Handle `baseUrl` as an object
if (isObject(url) && !isEmpty(url)) {
html = rewriteVMLs(html, url.url)
return posthtml([baseUrl(url)]).process(html, posthtmlOptions).then(result => result.html)
}
return html
}
/**
* VML backgrounds must be handled with regex because
* they're inside HTML comments.
*/
const rewriteVMLs = (html, url) => {
// Handle <v:image>
const vImageMatches = html.match(/<v:image[^>]+src="?([^"\s]+)"/g)
if (vImageMatches) {
vImageMatches.forEach(match => {
const vImage = match.match(/<v:image[^>]+src="?([^"\s]+)"/)
const vImageSrc = vImage[1]
if (!isUrl(vImageSrc)) {
const vImageSrcUrl = url + vImageSrc
const vImageReplace = vImage[0].replace(vImageSrc, vImageSrcUrl)
html = html.replace(vImage[0], vImageReplace)
}
})
}
// Handle <v:fill>
const vFillMatches = html.match(/<v:fill[^>]+src="?([^"\s]+)"/g)
if (vFillMatches) {
vFillMatches.forEach(match => {
const vFill = match.match(/<v:fill[^>]+src="?([^"\s]+)"/)
const vFillSrc = vFill[1]
if (!isUrl(vFillSrc)) {
const vFillSrcUrl = url + vFillSrc
const vFillReplace = vFill[0].replace(vFillSrc, vFillSrcUrl)
html = html.replace(vFill[0], vFillReplace)
}
})
}
return html
}