67 lines
1.8 KiB
JavaScript
67 lines
1.8 KiB
JavaScript
const selectorParser = require('postcss-selector-parser')
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const {
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tags
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} = require('@dcloudio/uni-cli-shared')
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const TAGS = Object.keys(tags)
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const transformSelector = (complexSelector, transformer) => {
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return selectorParser(transformer).processSync(complexSelector)
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}
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const isInsideKeyframes = function (rule) {
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return (
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rule.parent && rule.parent.type === 'atrule' && /^(-\w+-)?keyframes$/.test(rule.parent.name)
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)
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}
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let rewriteUrl
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function once (root) {
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if (!rewriteUrl) {
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rewriteUrl = require('@dcloudio/uni-cli-shared/lib/url-loader').rewriteUrl
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}
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rewriteUrl(root)
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root.walkRules(rule => {
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// Transform each rule here
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if (!isInsideKeyframes(rule)) {
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// rule.selectors == comma seperated selectors
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// a, b.c {} => ["a", "b.c"]
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rule.selectors = rule.selectors.map(complexSelector =>
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// complexSelector => simpleSelectors
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// "a.b#c" => ["a", ".b", "#c"]
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transformSelector(complexSelector, simpleSelectors => {
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// only process type selector, leave alone class & id selectors
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return simpleSelectors.walkTags(tag => {
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if (tag.value === 'page') {
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tag.value = 'body'
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} else if (~TAGS.indexOf(tag.value) && tag.value.substring(
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0, 4) !== 'uni-') {
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tag.value = 'uni-' + tag.value
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}
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})
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})
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)
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}
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})
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}
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const version = Number(require('postcss/package.json').version.split('.')[0])
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if (version < 8) {
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const postcss = require('postcss')
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module.exports = postcss.plugin('postcss-uniapp-plugin', function (opts) {
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return once
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})
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} else {
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module.exports = function (opts) {
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return {
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postcssPlugin: 'postcss-uniapp-plugin',
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Once: once
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}
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}
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module.exports.postcss = true
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}
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