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// Process html entity - {, ¯, ", ...
'use strict';
var entities = require('../common/entities');
var has = require('../common/utils').has;
var isValidEntityCode = require('../common/utils').isValidEntityCode;
var fromCodePoint = require('../common/utils').fromCodePoint;
var DIGITAL_RE = /^&#((?:x[a-f0-9]{1,6}|[0-9]{1,7}));/i;
var NAMED_RE = /^&([a-z][a-z0-9]{1,31});/i;
module.exports = function entity(state, silent) {
var ch, code, match, pos = state.pos, max = state.posMax;
if (state.src.charCodeAt(pos) !== 0x26/* & */) { return false; }
if (pos + 1 < max) {
ch = state.src.charCodeAt(pos + 1);
if (ch === 0x23 /* # */) {
match = state.src.slice(pos).match(DIGITAL_RE);
if (match) {
if (!silent) {
code = match[1][0].toLowerCase() === 'x' ? parseInt(match[1].slice(1), 16) : parseInt(match[1], 10);
state.pending += isValidEntityCode(code) ? fromCodePoint(code) : fromCodePoint(0xFFFD);
}
state.pos += match[0].length;
return true;
}
} else {
match = state.src.slice(pos).match(NAMED_RE);
if (match) {
if (has(entities, match[1])) {
if (!silent) { state.pending += entities[match[1]]; }
state.pos += match[0].length;
return true;
}
}
}
}
if (!silent) { state.pending += '&'; }
state.pos++;
return true;
};
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