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// Process autolinks '<protocol:...>'
var escapeHtml = require('../helpers').escapeHtml;
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) {
var tail, linkMatch, emailMatch, pos = state.pos;
if (state.src.charCodeAt(pos) !== 0x3C/* < */) { return false; }
tail = state.src.slice(pos);
if (tail.indexOf('>') < 0) { return false; }
linkMatch = tail.match(AUTOLINK_RE);
if (linkMatch) {
if (url_schemas.indexOf(linkMatch[1].toLowerCase()) < 0) { return false; }
state.push({
type: 'link_open',
href: linkMatch[0].slice(1, -1),
level: state.level
});
state.push({
type: 'text',
content: escapeHtml(linkMatch[0].slice(1, -1)),
level: state.level + 1
});
state.push({ type: 'link_close', level: state.level });
state.pos += linkMatch[0].length;
return true;
}
emailMatch = tail.match(EMAIL_RE);
if (emailMatch) {
state.push({
type: 'link_open',
href: 'mailto:' + emailMatch[0].slice(1, -1),
level: state.level
});
state.push({
type: 'text',
content: escapeHtml(emailMatch[0].slice(1, -1)),
level: state.level + 1
});
state.push({ type: 'link_close', level: state.level });
state.pos += emailMatch[0].length;
return true;
}
return false;
};