72 lines
1.4 KiB
JavaScript
72 lines
1.4 KiB
JavaScript
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// Process escaped chars and hardbreaks
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'use strict';
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var isSpace = require('../common/utils').isSpace;
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var ESCAPED = [];
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for (var i = 0; i < 256; i++) { ESCAPED.push(0); }
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'\\!"#$%&\'()*+,./:;<=>?@[]^_`{|}~-'
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.split('').forEach(function (ch) { ESCAPED[ch.charCodeAt(0)] = 1; });
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module.exports = function escape(state, silent) {
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var ch1, ch2, origStr, escapedStr, token, pos = state.pos, max = state.posMax;
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if (state.src.charCodeAt(pos) !== 0x5C/* \ */) return false;
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pos++;
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// '\' at the end of the inline block
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if (pos >= max) return false;
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ch1 = state.src.charCodeAt(pos);
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if (ch1 === 0x0A) {
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if (!silent) {
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state.push('hardbreak', 'br', 0);
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}
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pos++;
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// skip leading whitespaces from next line
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while (pos < max) {
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ch1 = state.src.charCodeAt(pos);
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if (!isSpace(ch1)) break;
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pos++;
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}
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state.pos = pos;
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return true;
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}
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escapedStr = state.src[pos];
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if (ch1 >= 0xD800 && ch1 <= 0xDBFF && pos + 1 < max) {
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ch2 = state.src.charCodeAt(pos + 1);
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if (ch2 >= 0xDC00 && ch2 <= 0xDFFF) {
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escapedStr += state.src[pos + 1];
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pos++;
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}
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}
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origStr = '\\' + escapedStr;
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if (!silent) {
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token = state.push('text_special', '', 0);
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if (ch1 < 256 && ESCAPED[ch1] !== 0) {
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token.content = escapedStr;
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} else {
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token.content = origStr;
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}
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token.markup = origStr;
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token.info = 'escape';
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}
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state.pos = pos + 1;
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return true;
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};
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