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// Process autolinks '<protocol:...>'
/* eslint max-len:0 */
const EMAIL_RE = /^([a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*)$/
/* eslint-disable-next-line no-control-regex */
const AUTOLINK_RE = /^([a-zA-Z][a-zA-Z0-9+.-]{1,31}):([^<>\x00-\x20]*)$/
export default function autolink (state, silent) {
let pos = state.pos
if (state.src.charCodeAt(pos) !== 0x3C/* < */) { return false }
const start = state.pos
const max = state.posMax
for (;;) {
if (++pos >= max) return false
const ch = state.src.charCodeAt(pos)
if (ch === 0x3C /* < */) return false
if (ch === 0x3E /* > */) break
}
const url = state.src.slice(start + 1, pos)
if (AUTOLINK_RE.test(url)) {
const fullUrl = state.md.normalizeLink(url)
if (!state.md.validateLink(fullUrl)) { return false }
if (!silent) {
const token_o = state.push('link_open', 'a', 1)
token_o.attrs = [['href', fullUrl]]
token_o.markup = 'autolink'
token_o.info = 'auto'
const token_t = state.push('text', '', 0)
token_t.content = state.md.normalizeLinkText(url)
const token_c = state.push('link_close', 'a', -1)
token_c.markup = 'autolink'
token_c.info = 'auto'
}
state.pos += url.length + 2
return true
}
if (EMAIL_RE.test(url)) {
const fullUrl = state.md.normalizeLink('mailto:' + url)
if (!state.md.validateLink(fullUrl)) { return false }
if (!silent) {
const token_o = state.push('link_open', 'a', 1)
token_o.attrs = [['href', fullUrl]]
token_o.markup = 'autolink'
token_o.info = 'auto'
const token_t = state.push('text', '', 0)
token_t.content = state.md.normalizeLinkText(url)
const token_c = state.push('link_close', 'a', -1)
token_c.markup = 'autolink'
token_c.info = 'auto'
}
state.pos += url.length + 2
return true
}
return false
}
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