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// Process autolinks '<protocol:...>'
'use strict';
var url_schemas = require('../common/url_schemas');
/*eslint max-len:0*/
var EMAIL_RE = /^<([a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*)>/;
var AUTOLINK_RE = /^<([a-zA-Z.\-]{1,25}):([^<>\x00-\x20]*)>/;
module.exports = function autolink(state, silent) {
var tail, linkMatch, emailMatch, url, fullUrl, token,
pos = state.pos;
if (state.src.charCodeAt(pos) !== 0x3C/* < */) { return false; }
tail = state.src.slice(pos);
if (tail.indexOf('>') < 0) { return false; }
if (AUTOLINK_RE.test(tail)) {
linkMatch = tail.match(AUTOLINK_RE);
if (url_schemas.indexOf(linkMatch[1].toLowerCase()) < 0) { return false; }
url = linkMatch[0].slice(1, -1);
fullUrl = state.md.normalizeLink(url);
if (!state.md.validateLink(fullUrl)) { return false; }
if (!silent) {
token = state.push('link_open', 'a', 1);
token.attrs = [ [ 'href', fullUrl ] ];
token = state.push('text', '', 0);
token.content = state.md.normalizeLinkText(url);
token = state.push('link_close', 'a', -1);
}
state.pos += linkMatch[0].length;
return true;
}
if (EMAIL_RE.test(tail)) {
emailMatch = tail.match(EMAIL_RE);
url = emailMatch[0].slice(1, -1);
fullUrl = state.md.normalizeLink('mailto:' + url);
if (!state.md.validateLink(fullUrl)) { return false; }
if (!silent) {
token = state.push('link_open', 'a', 1);
token.attrs = [ [ 'href', fullUrl ] ];
token.markup = 'autolink';
token.info = 'auto';
token = state.push('text', '', 0);
token.content = state.md.normalizeLinkText(url);
token = state.push('link_close', 'a', -1);
token.markup = 'autolink';
token.info = 'auto';
}
state.pos += emailMatch[0].length;
return true;
}
return false;
};