prism-autolinker.js
1.36 KB
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(function(){
if (!self.Prism) {
return;
}
var url = /\b([a-z]{3,7}:\/\/|tel:)[\w\-+%~/.:#=?&]+/,
email = /\b\S+@[\w.]+[a-z]{2}/,
linkMd = /\[([^\]]+)]\(([^)]+)\)/,
// Tokens that may contain URLs and emails
candidates = ['comment', 'url', 'attr-value', 'string'];
for (var language in Prism.languages) {
var tokens = Prism.languages[language];
Prism.languages.DFS(tokens, function (key, def, type) {
if (candidates.indexOf(type) > -1 && Prism.util.type(def) !== 'Array') {
if (!def.pattern) {
def = this[key] = {
pattern: def
};
}
def.inside = def.inside || {};
if (type == 'comment') {
def.inside['md-link'] = linkMd;
}
if (type == 'attr-value') {
Prism.languages.insertBefore('inside', 'punctuation', { 'url-link': url }, def);
}
else {
def.inside['url-link'] = url;
}
def.inside['email-link'] = email;
}
});
tokens['url-link'] = url;
tokens['email-link'] = email;
}
Prism.hooks.add('wrap', function(env) {
if (/-link$/.test(env.type)) {
env.tag = 'a';
var href = env.content;
if (env.type == 'email-link' && href.indexOf('mailto:') != 0) {
href = 'mailto:' + href;
}
else if (env.type == 'md-link') {
// Markdown
var match = env.content.match(linkMd);
href = match[2];
env.content = match[1];
}
env.attributes.href = href;
}
});
})();