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estrattonbaileyestrattonbailey
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Move higlight to global scope. Don't assign lang to save bytes
1 parent 6fe6fc4 commit cfff84f

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-83
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‎src/index.js‎

Lines changed: 87 additions & 83 deletions
Original file line numberDiff line numberDiff line change
@@ -6,6 +6,11 @@ const TAGS = {
66
'-': ['<hr />']
77
};
88

9+
/**
10+
* Highlight option
11+
*/
12+
let highlight = false;
13+
914
/** Outdent a string based on the first indented line's leading whitespace
1015
* @private
1116
*/
@@ -21,96 +26,95 @@ function encodeAttr(str) {
2126
}
2227

2328
/** Parse Markdown into an HTML String. */
24-
export default function snarkdown(md, options = {}) {
25-
const highlight = options.highlight;
29+
function parse(md, prevLinks) {
30+
let tokenizer = /((?:^|\n+)(?:\n---+|\* \*(?: \*)+)\n)|(?:^```(\w*)\n([\s\S]*?)\n```$)|((?:(?:^|\n+)(?:\t| {2,}).+)+\n*)|((?:(?:^|\n)([>*+-]|\d+\.)\s+.*)+)|(?:\!\[([^\]]*?)\]\(([^\)]+?)\))|(\[)|(\](?:\(([^\)]+?)\))?)|(?:(?:^|\n+)([^\s].*)\n(\-{3,}|={3,})(?:\n+|$))|(?:(?:^|\n+)(#{1,3})\s*(.+)(?:\n+|$))|(?:`([^`].*?)`)|( \n\n*|\n{2,}|__|\*\*|[_*])/gm,
31+
context = [],
32+
out = '',
33+
links = prevLinks || {},
34+
last = 0,
35+
chunk, prev, token, inner, t;
2636

27-
return parse(md);
37+
function tag(token) {
38+
var desc = TAGS[token.replace(/\*/g,'_')[1] || ''],
39+
end = context[context.length-1]==token;
40+
if (!desc) return token;
41+
if (!desc[1]) return desc[0];
42+
context[end?'pop':'push'](token);
43+
return desc[end|0];
44+
}
2845

29-
function parse(md, prevLinks) {
30-
let tokenizer = /((?:^|\n+)(?:\n---+|\* \*(?: \*)+)\n)|(?:^```(\w*)\n([\s\S]*?)\n```$)|((?:(?:^|\n+)(?:\t| {2,}).+)+\n*)|((?:(?:^|\n)([>*+-]|\d+\.)\s+.*)+)|(?:\!\[([^\]]*?)\]\(([^\)]+?)\))|(\[)|(\](?:\(([^\)]+?)\))?)|(?:(?:^|\n+)([^\s].*)\n(\-{3,}|={3,})(?:\n+|$))|(?:(?:^|\n+)(#{1,3})\s*(.+)(?:\n+|$))|(?:`([^`].*?)`)|( \n\n*|\n{2,}|__|\*\*|[_*])/gm,
31-
context = [],
32-
out = '',
33-
links = prevLinks || {},
34-
last = 0,
35-
chunk, prev, token, inner, t;
46+
function flush() {
47+
let str = '';
48+
while (context.length) str += tag(context[context.length-1]);
49+
return str;
50+
}
3651

37-
function tag(token) {
38-
var desc = TAGS[token.replace(/\*/g,'_')[1] || ''],
39-
end = context[context.length-1]==token;
40-
if (!desc) return token;
41-
if (!desc[1]) return desc[0];
42-
context[end?'pop':'push'](token);
43-
return desc[end|0];
44-
}
52+
md = md.replace(/^\[(.+?)\]:\s*(.+)$/gm, (s, name, url) => {
53+
links[name.toLowerCase()] = url;
54+
return '';
55+
}).replace(/^\n+|\n+$/g, '');
4556

46-
function flush() {
47-
let str = '';
48-
while (context.length) str += tag(context[context.length-1]);
49-
return str;
57+
while ( (token=tokenizer.exec(md)) ) {
58+
prev = md.substring(last, token.index);
59+
last = tokenizer.lastIndex;
60+
chunk = token[0];
61+
if (prev.match(/[^\\](\\\\)*\\$/)) {
62+
// escaped
5063
}
51-
52-
md = md.replace(/^\[(.+?)\]:\s*(.+)$/gm, (s, name, url) => {
53-
links[name.toLowerCase()] = url;
54-
return '';
55-
}).replace(/^\n+|\n+$/g, '');
56-
57-
while ( (token=tokenizer.exec(md)) ) {
58-
prev = md.substring(last, token.index);
59-
last = tokenizer.lastIndex;
60-
chunk = token[0];
61-
if (prev.match(/[^\\](\\\\)*\\$/)) {
62-
// escaped
63-
}
64-
// Code/Indent blocks:
65-
else if (token[3] || token[4]) {
66-
const lang = token[4]?'poetry':token[2].toLowerCase();
67-
chunk = '<pre class="code '+lang+'">'+outdent(
68-
highlight ? highlight(token[3] || token[4], lang) : encodeAttr(token[3] || token[4])
69-
).replace(/^\n+|\n+$/g, '')+'</pre>';
70-
}
71-
// > Quotes, -* lists:
72-
else if (token[6]) {
73-
t = token[6];
74-
if (t.match(/\./)) {
75-
token[5] = token[5].replace(/^\d+/gm, '');
76-
}
77-
inner = parse(outdent(token[5].replace(/^\s*[>*+.-]/gm, '')));
78-
if (t==='>') t = 'blockquote';
79-
else {
80-
t = t.match(/\./) ? 'ol' : 'ul';
81-
inner = inner.replace(/^(.*)(\n|$)/gm, '<li>$1</li>');
82-
}
83-
chunk = '<'+t+'>' + inner + '</'+t+'>';
84-
}
85-
// Images:
86-
else if (token[8]) {
87-
chunk = `<img src="${encodeAttr(token[8])}" alt="${encodeAttr(token[7])}">`;
88-
}
89-
// Links:
90-
else if (token[10]) {
91-
out = out.replace('<a>', `<a href="${encodeAttr(token[11] || links[prev.toLowerCase()])}">`);
92-
chunk = flush() + '</a>';
93-
}
94-
else if (token[9]) {
95-
chunk = '<a>';
96-
}
97-
// Headings:
98-
else if (token[12] || token[14]) {
99-
t = 'h' + (token[14] ? token[14].length : (token[13][0]==='='?1:2));
100-
chunk = '<'+t+'>' + parse(token[12] || token[15], links) + '</'+t+'>';
101-
}
102-
// `code`:
103-
else if (token[16]) {
104-
chunk = '<code>'+encodeAttr(token[16])+'</code>';
64+
// Code/Indent blocks:
65+
else if (token[3] || token[4]) {
66+
chunk = '<pre class="code '+(token[4]?'poetry':token[2].toLowerCase())+'">'+outdent(
67+
highlight ? highlight(token[3] || token[4], (token[4]?'poetry':token[2].toLowerCase())) : encodeAttr(token[3] || token[4])
68+
).replace(/^\n+|\n+$/g, '')+'</pre>';
69+
}
70+
// > Quotes, -* lists:
71+
else if (token[6]) {
72+
t = token[6];
73+
if (t.match(/\./)) {
74+
token[5] = token[5].replace(/^\d+/gm, '');
10575
}
106-
// Inline formatting: *em*, **strong** & friends
107-
else if (token[17] || token[1]) {
108-
chunk = tag(token[17] || '--');
76+
inner = parse(outdent(token[5].replace(/^\s*[>*+.-]/gm, '')));
77+
if (t==='>') t = 'blockquote';
78+
else {
79+
t = t.match(/\./) ? 'ol' : 'ul';
80+
inner = inner.replace(/^(.*)(\n|$)/gm, '<li>$1</li>');
10981
}
110-
out += prev;
111-
out += chunk;
82+
chunk = '<'+t+'>' + inner + '</'+t+'>';
11283
}
113-
114-
return (out + md.substring(last) + flush()).trim();
84+
// Images:
85+
else if (token[8]) {
86+
chunk = `<img src="${encodeAttr(token[8])}" alt="${encodeAttr(token[7])}">`;
87+
}
88+
// Links:
89+
else if (token[10]) {
90+
out = out.replace('<a>', `<a href="${encodeAttr(token[11] || links[prev.toLowerCase()])}">`);
91+
chunk = flush() + '</a>';
92+
}
93+
else if (token[9]) {
94+
chunk = '<a>';
95+
}
96+
// Headings:
97+
else if (token[12] || token[14]) {
98+
t = 'h' + (token[14] ? token[14].length : (token[13][0]==='='?1:2));
99+
chunk = '<'+t+'>' + parse(token[12] || token[15], links) + '</'+t+'>';
100+
}
101+
// `code`:
102+
else if (token[16]) {
103+
chunk = '<code>'+encodeAttr(token[16])+'</code>';
104+
}
105+
// Inline formatting: *em*, **strong** & friends
106+
else if (token[17] || token[1]) {
107+
chunk = tag(token[17] || '--');
108+
}
109+
out += prev;
110+
out += chunk;
115111
}
112+
113+
return (out + md.substring(last) + flush()).trim();
114+
}
115+
116+
export default function snarkdown(md, opt) {
117+
opt = opt || {};
118+
highlight = opt.highlight;
119+
return parse(md);
116120
}

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