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rOACCT/node_modules/prismjs/plugins/diff-highlight/prism-diff-highlight.js
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prism-diff-highlight.js
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(function () {
if (typeof Prism === 'undefined') {
return;
}
var LANGUAGE_REGEX = /^diff-([\w-]+)/i;
var HTML_TAG = /<\/?(?!\d)[^\s>\/=$<%]+(?:\s(?:\s*[^\s>\/=]+(?:\s*=\s*(?:"[^"]*"|'[^']*'|[^\s'">=]+(?=[\s>]))|(?=[\s/>])))+)?\s*\/?>/g;
//this will match a line plus the line break while ignoring the line breaks HTML tags may contain.
var HTML_LINE = RegExp(/(?:__|[^\r\n<])*(?:\r\n?|\n|(?:__|[^\r\n<])(?![^\r\n]))/.source.replace(/__/g, function () { return HTML_TAG.source; }), 'gi');
var warningLogged = false;
Prism.hooks.add('before-sanity-check', function (env) {
var lang = env.language;
if (LANGUAGE_REGEX.test(lang) && !env.grammar) {
env.grammar = Prism.languages[lang] = Prism.languages.diff;
}
});
Prism.hooks.add('before-tokenize', function (env) {
if (!warningLogged && !Prism.languages.diff && !Prism.plugins.autoloader) {
warningLogged = true;
console.warn("Prism's Diff Highlight plugin requires the Diff language definition (prism-diff.js)." +
"Make sure the language definition is loaded or use Prism's Autoloader plugin.");
}
var lang = env.language;
if (LANGUAGE_REGEX.test(lang) && !Prism.languages[lang]) {
Prism.languages[lang] = Prism.languages.diff;
}
});
Prism.hooks.add('wrap', function (env) {
var diffLanguage; var diffGrammar;
if (env.language !== 'diff') {
var langMatch = LANGUAGE_REGEX.exec(env.language);
if (!langMatch) {
return; // not a language specific diff
}
diffLanguage = langMatch[1];
diffGrammar = Prism.languages[diffLanguage];
}
var PREFIXES = Prism.languages.diff && Prism.languages.diff.PREFIXES;
// one of the diff tokens without any nested tokens
if (PREFIXES && env.type in PREFIXES) {
/** @type {string} */
var content = env.content.replace(HTML_TAG, ''); // remove all HTML tags
/** @type {string} */
var decoded = content.replace(/&lt;/g, '<').replace(/&amp;/g, '&');
// remove any one-character prefix
var code = decoded.replace(/(^|[\r\n])./g, '$1');
// highlight, if possible
var highlighted;
if (diffGrammar) {
highlighted = Prism.highlight(code, diffGrammar, diffLanguage);
} else {
highlighted = Prism.util.encode(code);
}
// get the HTML source of the prefix token
var prefixToken = new Prism.Token('prefix', PREFIXES[env.type], [/\w+/.exec(env.type)[0]]);
var prefix = Prism.Token.stringify(prefixToken, env.language);
// add prefix
var lines = []; var m;
HTML_LINE.lastIndex = 0;
while ((m = HTML_LINE.exec(highlighted))) {
lines.push(prefix + m[0]);
}
if (/(?:^|[\r\n]).$/.test(decoded)) {
// because both "+a\n+" and "+a\n" will map to "a\n" after the line prefixes are removed
lines.push(prefix);
}
env.content = lines.join('');
if (diffGrammar) {
env.classes.push('language-' + diffLanguage);
}
}
});
}());
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