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feat($code-highlight): add doc highlight #2618

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30 changes: 29 additions & 1 deletion packages/@vuepress/markdown/lib/highlight.js
Original file line number Diff line number Diff line change
Expand Up @@ -24,12 +24,30 @@ function getLangCodeFromExtension (extension) {
yml: 'yaml',
styl: 'stylus',
kt: 'kotlin',
rs: 'rust'
rs: 'rust',
cs: 'csharp',
fs: 'fsharp'
}

return extensionMap[extension] || extension
}

function getDocLangCodeFromLang (lang) {
const docMap = {
'js': 'jsdoc',
'javascript': 'jsdoc',
'typescript': 'jsdoc',
'markup': 'jsdoc',
'java': 'javadoc',
'php': 'phpdoc',
'csharp': 'xml-doc',
'fsharp': 'xml-doc',
'vbnet': 'xml-doc'
}

return docMap[lang]
}

Comment on lines +35 to +50
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Where do these come from? mind providing some context?

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@troy351 troy351 Oct 14, 2020

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This was from https://github.com/PrismJS/prism/blob/master/components.json , searching for the keyword doc" and arranged myself.
The original PrismJS PR: PrismJS/prism#1541 PrismJS/prism#2340

PS. I was trying to add "js":"javascript" into getLangCodeFromExtension just like "ts":"typescript" to avoid duplicate of line 37 & 38 but causing unexpected behavior, so I give up

module.exports = (str, lang) => {
if (!lang) {
return wrap(str, 'text')
Expand All @@ -46,6 +64,16 @@ module.exports = (str, lang) => {
logger.warn(chalk.yellow(`[vuepress] Syntax highlight for language "${lang}" is not supported.`))
}
}

const docLang = getDocLangCodeFromLang(lang)
if (docLang && !prism.languages[docLang]) {
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If we're doing this check here, wouldn't we also need to do the same check on line 77?

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Loading the corresponding doc-language before the language itself, but not all language has its doc-language, I think it's fine here

try {
loadLanguages([docLang])
} catch (e) {
logger.warn(chalk.yellow(`[vuepress] Syntax highlight for language "${docLang}" is not supported.`))
}
}

if (prism.languages[lang]) {
const code = prism.highlight(str, prism.languages[lang], lang)
return wrap(code, rawLang)
Expand Down
2 changes: 1 addition & 1 deletion packages/@vuepress/markdown/package.json
Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,7 @@
"markdown-it-chain": "^1.3.0",
"markdown-it-emoji": "^1.4.0",
"markdown-it-table-of-contents": "^0.4.0",
"prismjs": "^1.13.0"
"prismjs": "^1.21.0"
},
"publishConfig": {
"access": "public"
Expand Down