scripts/CodeMirror/mode/markdown/markdown.js (view raw)
1// CodeMirror, copyright (c) by Marijn Haverbeke and others
2// Distributed under an MIT license: https://codemirror.net/LICENSE
3
4(function(mod) {
5 if (typeof exports == "object" && typeof module == "object") // CommonJS
6 mod(require("../../lib/codemirror"), require("../xml/xml"), require("../meta"));
7 else if (typeof define == "function" && define.amd) // AMD
8 define(["../../lib/codemirror", "../xml/xml", "../meta"], mod);
9 else // Plain browser env
10 mod(CodeMirror);
11})(function(CodeMirror) {
12"use strict";
13
14CodeMirror.defineMode("markdown", function(cmCfg, modeCfg) {
15
16 var htmlMode = CodeMirror.getMode(cmCfg, "text/html");
17 var htmlModeMissing = htmlMode.name == "null"
18
19 function getMode(name) {
20 if (CodeMirror.findModeByName) {
21 var found = CodeMirror.findModeByName(name);
22 if (found) name = found.mime || found.mimes[0];
23 }
24 var mode = CodeMirror.getMode(cmCfg, name);
25 return mode.name == "null" ? null : mode;
26 }
27
28 // Should characters that affect highlighting be highlighted separate?
29 // Does not include characters that will be output (such as `1.` and `-` for lists)
30 if (modeCfg.highlightFormatting === undefined)
31 modeCfg.highlightFormatting = false;
32
33 // Maximum number of nested blockquotes. Set to 0 for infinite nesting.
34 // Excess `>` will emit `error` token.
35 if (modeCfg.maxBlockquoteDepth === undefined)
36 modeCfg.maxBlockquoteDepth = 0;
37
38 // Turn on task lists? ("- [ ] " and "- [x] ")
39 if (modeCfg.taskLists === undefined) modeCfg.taskLists = false;
40
41 // Turn on strikethrough syntax
42 if (modeCfg.strikethrough === undefined)
43 modeCfg.strikethrough = false;
44
45 if (modeCfg.emoji === undefined)
46 modeCfg.emoji = false;
47
48 if (modeCfg.fencedCodeBlockHighlighting === undefined)
49 modeCfg.fencedCodeBlockHighlighting = true;
50
51 if (modeCfg.fencedCodeBlockDefaultMode === undefined)
52 modeCfg.fencedCodeBlockDefaultMode = 'text/plain';
53
54 if (modeCfg.xml === undefined)
55 modeCfg.xml = true;
56
57 // Allow token types to be overridden by user-provided token types.
58 if (modeCfg.tokenTypeOverrides === undefined)
59 modeCfg.tokenTypeOverrides = {};
60
61 var tokenTypes = {
62 header: "header",
63 code: "comment",
64 quote: "quote",
65 list1: "variable-2",
66 list2: "variable-3",
67 list3: "keyword",
68 hr: "hr",
69 image: "image",
70 imageAltText: "image-alt-text",
71 imageMarker: "image-marker",
72 formatting: "formatting",
73 linkInline: "link",
74 linkEmail: "link",
75 linkText: "link",
76 linkHref: "string",
77 em: "em",
78 strong: "strong",
79 strikethrough: "strikethrough",
80 emoji: "builtin"
81 };
82
83 for (var tokenType in tokenTypes) {
84 if (tokenTypes.hasOwnProperty(tokenType) && modeCfg.tokenTypeOverrides[tokenType]) {
85 tokenTypes[tokenType] = modeCfg.tokenTypeOverrides[tokenType];
86 }
87 }
88
89 var hrRE = /^([*\-_])(?:\s*\1){2,}\s*$/
90 , listRE = /^(?:[*\-+]|^[0-9]+([.)]))\s+/
91 , taskListRE = /^\[(x| )\](?=\s)/i // Must follow listRE
92 , atxHeaderRE = modeCfg.allowAtxHeaderWithoutSpace ? /^(#+)/ : /^(#+)(?: |$)/
93 , setextHeaderRE = /^ {0,3}(?:\={1,}|-{2,})\s*$/
94 , textRE = /^[^#!\[\]*_\\<>` "'(~:]+/
95 , fencedCodeRE = /^(~~~+|```+)[ \t]*([\w\/+#-]*)[^\n`]*$/
96 , linkDefRE = /^\s*\[[^\]]+?\]:.*$/ // naive link-definition
97 , punctuation = /[!"#$%&'()*+,\-.\/:;<=>?@\[\\\]^_`{|}~\xA1\xA7\xAB\xB6\xB7\xBB\xBF\u037E\u0387\u055A-\u055F\u0589\u058A\u05BE\u05C0\u05C3\u05C6\u05F3\u05F4\u0609\u060A\u060C\u060D\u061B\u061E\u061F\u066A-\u066D\u06D4\u0700-\u070D\u07F7-\u07F9\u0830-\u083E\u085E\u0964\u0965\u0970\u0AF0\u0DF4\u0E4F\u0E5A\u0E5B\u0F04-\u0F12\u0F14\u0F3A-\u0F3D\u0F85\u0FD0-\u0FD4\u0FD9\u0FDA\u104A-\u104F\u10FB\u1360-\u1368\u1400\u166D\u166E\u169B\u169C\u16EB-\u16ED\u1735\u1736\u17D4-\u17D6\u17D8-\u17DA\u1800-\u180A\u1944\u1945\u1A1E\u1A1F\u1AA0-\u1AA6\u1AA8-\u1AAD\u1B5A-\u1B60\u1BFC-\u1BFF\u1C3B-\u1C3F\u1C7E\u1C7F\u1CC0-\u1CC7\u1CD3\u2010-\u2027\u2030-\u2043\u2045-\u2051\u2053-\u205E\u207D\u207E\u208D\u208E\u2308-\u230B\u2329\u232A\u2768-\u2775\u27C5\u27C6\u27E6-\u27EF\u2983-\u2998\u29D8-\u29DB\u29FC\u29FD\u2CF9-\u2CFC\u2CFE\u2CFF\u2D70\u2E00-\u2E2E\u2E30-\u2E42\u3001-\u3003\u3008-\u3011\u3014-\u301F\u3030\u303D\u30A0\u30FB\uA4FE\uA4FF\uA60D-\uA60F\uA673\uA67E\uA6F2-\uA6F7\uA874-\uA877\uA8CE\uA8CF\uA8F8-\uA8FA\uA8FC\uA92E\uA92F\uA95F\uA9C1-\uA9CD\uA9DE\uA9DF\uAA5C-\uAA5F\uAADE\uAADF\uAAF0\uAAF1\uABEB\uFD3E\uFD3F\uFE10-\uFE19\uFE30-\uFE52\uFE54-\uFE61\uFE63\uFE68\uFE6A\uFE6B\uFF01-\uFF03\uFF05-\uFF0A\uFF0C-\uFF0F\uFF1A\uFF1B\uFF1F\uFF20\uFF3B-\uFF3D\uFF3F\uFF5B\uFF5D\uFF5F-\uFF65]|\uD800[\uDD00-\uDD02\uDF9F\uDFD0]|\uD801\uDD6F|\uD802[\uDC57\uDD1F\uDD3F\uDE50-\uDE58\uDE7F\uDEF0-\uDEF6\uDF39-\uDF3F\uDF99-\uDF9C]|\uD804[\uDC47-\uDC4D\uDCBB\uDCBC\uDCBE-\uDCC1\uDD40-\uDD43\uDD74\uDD75\uDDC5-\uDDC9\uDDCD\uDDDB\uDDDD-\uDDDF\uDE38-\uDE3D\uDEA9]|\uD805[\uDCC6\uDDC1-\uDDD7\uDE41-\uDE43\uDF3C-\uDF3E]|\uD809[\uDC70-\uDC74]|\uD81A[\uDE6E\uDE6F\uDEF5\uDF37-\uDF3B\uDF44]|\uD82F\uDC9F|\uD836[\uDE87-\uDE8B]/
98 , expandedTab = " " // CommonMark specifies tab as 4 spaces
99
100 function switchInline(stream, state, f) {
101 state.f = state.inline = f;
102 return f(stream, state);
103 }
104
105 function switchBlock(stream, state, f) {
106 state.f = state.block = f;
107 return f(stream, state);
108 }
109
110 function lineIsEmpty(line) {
111 return !line || !/\S/.test(line.string)
112 }
113
114 // Blocks
115
116 function blankLine(state) {
117 // Reset linkTitle state
118 state.linkTitle = false;
119 state.linkHref = false;
120 state.linkText = false;
121 // Reset EM state
122 state.em = false;
123 // Reset STRONG state
124 state.strong = false;
125 // Reset strikethrough state
126 state.strikethrough = false;
127 // Reset state.quote
128 state.quote = 0;
129 // Reset state.indentedCode
130 state.indentedCode = false;
131 if (state.f == htmlBlock) {
132 var exit = htmlModeMissing
133 if (!exit) {
134 var inner = CodeMirror.innerMode(htmlMode, state.htmlState)
135 exit = inner.mode.name == "xml" && inner.state.tagStart === null &&
136 (!inner.state.context && inner.state.tokenize.isInText)
137 }
138 if (exit) {
139 state.f = inlineNormal;
140 state.block = blockNormal;
141 state.htmlState = null;
142 }
143 }
144 // Reset state.trailingSpace
145 state.trailingSpace = 0;
146 state.trailingSpaceNewLine = false;
147 // Mark this line as blank
148 state.prevLine = state.thisLine
149 state.thisLine = {stream: null}
150 return null;
151 }
152
153 function blockNormal(stream, state) {
154 var firstTokenOnLine = stream.column() === state.indentation;
155 var prevLineLineIsEmpty = lineIsEmpty(state.prevLine.stream);
156 var prevLineIsIndentedCode = state.indentedCode;
157 var prevLineIsHr = state.prevLine.hr;
158 var prevLineIsList = state.list !== false;
159 var maxNonCodeIndentation = (state.listStack[state.listStack.length - 1] || 0) + 3;
160
161 state.indentedCode = false;
162
163 var lineIndentation = state.indentation;
164 // compute once per line (on first token)
165 if (state.indentationDiff === null) {
166 state.indentationDiff = state.indentation;
167 if (prevLineIsList) {
168 state.list = null;
169 // While this list item's marker's indentation is less than the deepest
170 // list item's content's indentation,pop the deepest list item
171 // indentation off the stack, and update block indentation state
172 while (lineIndentation < state.listStack[state.listStack.length - 1]) {
173 state.listStack.pop();
174 if (state.listStack.length) {
175 state.indentation = state.listStack[state.listStack.length - 1];
176 // less than the first list's indent -> the line is no longer a list
177 } else {
178 state.list = false;
179 }
180 }
181 if (state.list !== false) {
182 state.indentationDiff = lineIndentation - state.listStack[state.listStack.length - 1]
183 }
184 }
185 }
186
187 // not comprehensive (currently only for setext detection purposes)
188 var allowsInlineContinuation = (
189 !prevLineLineIsEmpty && !prevLineIsHr && !state.prevLine.header &&
190 (!prevLineIsList || !prevLineIsIndentedCode) &&
191 !state.prevLine.fencedCodeEnd
192 );
193
194 var isHr = (state.list === false || prevLineIsHr || prevLineLineIsEmpty) &&
195 state.indentation <= maxNonCodeIndentation && stream.match(hrRE);
196
197 var match = null;
198 if (state.indentationDiff >= 4 && (prevLineIsIndentedCode || state.prevLine.fencedCodeEnd ||
199 state.prevLine.header || prevLineLineIsEmpty)) {
200 stream.skipToEnd();
201 state.indentedCode = true;
202 return tokenTypes.code;
203 } else if (stream.eatSpace()) {
204 return null;
205 } else if (firstTokenOnLine && state.indentation <= maxNonCodeIndentation && (match = stream.match(atxHeaderRE)) && match[1].length <= 6) {
206 state.quote = 0;
207 state.header = match[1].length;
208 state.thisLine.header = true;
209 if (modeCfg.highlightFormatting) state.formatting = "header";
210 state.f = state.inline;
211 return getType(state);
212 } else if (state.indentation <= maxNonCodeIndentation && stream.eat('>')) {
213 state.quote = firstTokenOnLine ? 1 : state.quote + 1;
214 if (modeCfg.highlightFormatting) state.formatting = "quote";
215 stream.eatSpace();
216 return getType(state);
217 } else if (!isHr && !state.setext && firstTokenOnLine && state.indentation <= maxNonCodeIndentation && (match = stream.match(listRE))) {
218 var listType = match[1] ? "ol" : "ul";
219
220 state.indentation = lineIndentation + stream.current().length;
221 state.list = true;
222 state.quote = 0;
223
224 // Add this list item's content's indentation to the stack
225 state.listStack.push(state.indentation);
226 // Reset inline styles which shouldn't propagate aross list items
227 state.em = false;
228 state.strong = false;
229 state.code = false;
230 state.strikethrough = false;
231
232 if (modeCfg.taskLists && stream.match(taskListRE, false)) {
233 state.taskList = true;
234 }
235 state.f = state.inline;
236 if (modeCfg.highlightFormatting) state.formatting = ["list", "list-" + listType];
237 return getType(state);
238 } else if (firstTokenOnLine && state.indentation <= maxNonCodeIndentation && (match = stream.match(fencedCodeRE, true))) {
239 state.quote = 0;
240 state.fencedEndRE = new RegExp(match[1] + "+ *$");
241 // try switching mode
242 state.localMode = modeCfg.fencedCodeBlockHighlighting && getMode(match[2] || modeCfg.fencedCodeBlockDefaultMode );
243 if (state.localMode) state.localState = CodeMirror.startState(state.localMode);
244 state.f = state.block = local;
245 if (modeCfg.highlightFormatting) state.formatting = "code-block";
246 state.code = -1
247 return getType(state);
248 // SETEXT has lowest block-scope precedence after HR, so check it after
249 // the others (code, blockquote, list...)
250 } else if (
251 // if setext set, indicates line after ---/===
252 state.setext || (
253 // line before ---/===
254 (!allowsInlineContinuation || !prevLineIsList) && !state.quote && state.list === false &&
255 !state.code && !isHr && !linkDefRE.test(stream.string) &&
256 (match = stream.lookAhead(1)) && (match = match.match(setextHeaderRE))
257 )
258 ) {
259 if ( !state.setext ) {
260 state.header = match[0].charAt(0) == '=' ? 1 : 2;
261 state.setext = state.header;
262 } else {
263 state.header = state.setext;
264 // has no effect on type so we can reset it now
265 state.setext = 0;
266 stream.skipToEnd();
267 if (modeCfg.highlightFormatting) state.formatting = "header";
268 }
269 state.thisLine.header = true;
270 state.f = state.inline;
271 return getType(state);
272 } else if (isHr) {
273 stream.skipToEnd();
274 state.hr = true;
275 state.thisLine.hr = true;
276 return tokenTypes.hr;
277 } else if (stream.peek() === '[') {
278 return switchInline(stream, state, footnoteLink);
279 }
280
281 return switchInline(stream, state, state.inline);
282 }
283
284 function htmlBlock(stream, state) {
285 var style = htmlMode.token(stream, state.htmlState);
286 if (!htmlModeMissing) {
287 var inner = CodeMirror.innerMode(htmlMode, state.htmlState)
288 if ((inner.mode.name == "xml" && inner.state.tagStart === null &&
289 (!inner.state.context && inner.state.tokenize.isInText)) ||
290 (state.md_inside && stream.current().indexOf(">") > -1)) {
291 state.f = inlineNormal;
292 state.block = blockNormal;
293 state.htmlState = null;
294 }
295 }
296 return style;
297 }
298
299 function local(stream, state) {
300 var currListInd = state.listStack[state.listStack.length - 1] || 0;
301 var hasExitedList = state.indentation < currListInd;
302 var maxFencedEndInd = currListInd + 3;
303 if (state.fencedEndRE && state.indentation <= maxFencedEndInd && (hasExitedList || stream.match(state.fencedEndRE))) {
304 if (modeCfg.highlightFormatting) state.formatting = "code-block";
305 var returnType;
306 if (!hasExitedList) returnType = getType(state)
307 state.localMode = state.localState = null;
308 state.block = blockNormal;
309 state.f = inlineNormal;
310 state.fencedEndRE = null;
311 state.code = 0
312 state.thisLine.fencedCodeEnd = true;
313 if (hasExitedList) return switchBlock(stream, state, state.block);
314 return returnType;
315 } else if (state.localMode) {
316 return state.localMode.token(stream, state.localState);
317 } else {
318 stream.skipToEnd();
319 return tokenTypes.code;
320 }
321 }
322
323 // Inline
324 function getType(state) {
325 var styles = [];
326
327 if (state.formatting) {
328 styles.push(tokenTypes.formatting);
329
330 if (typeof state.formatting === "string") state.formatting = [state.formatting];
331
332 for (var i = 0; i < state.formatting.length; i++) {
333 styles.push(tokenTypes.formatting + "-" + state.formatting[i]);
334
335 if (state.formatting[i] === "header") {
336 styles.push(tokenTypes.formatting + "-" + state.formatting[i] + "-" + state.header);
337 }
338
339 // Add `formatting-quote` and `formatting-quote-#` for blockquotes
340 // Add `error` instead if the maximum blockquote nesting depth is passed
341 if (state.formatting[i] === "quote") {
342 if (!modeCfg.maxBlockquoteDepth || modeCfg.maxBlockquoteDepth >= state.quote) {
343 styles.push(tokenTypes.formatting + "-" + state.formatting[i] + "-" + state.quote);
344 } else {
345 styles.push("error");
346 }
347 }
348 }
349 }
350
351 if (state.taskOpen) {
352 styles.push("meta");
353 return styles.length ? styles.join(' ') : null;
354 }
355 if (state.taskClosed) {
356 styles.push("property");
357 return styles.length ? styles.join(' ') : null;
358 }
359
360 if (state.linkHref) {
361 styles.push(tokenTypes.linkHref, "url");
362 } else { // Only apply inline styles to non-url text
363 if (state.strong) { styles.push(tokenTypes.strong); }
364 if (state.em) { styles.push(tokenTypes.em); }
365 if (state.strikethrough) { styles.push(tokenTypes.strikethrough); }
366 if (state.emoji) { styles.push(tokenTypes.emoji); }
367 if (state.linkText) { styles.push(tokenTypes.linkText); }
368 if (state.code) { styles.push(tokenTypes.code); }
369 if (state.image) { styles.push(tokenTypes.image); }
370 if (state.imageAltText) { styles.push(tokenTypes.imageAltText, "link"); }
371 if (state.imageMarker) { styles.push(tokenTypes.imageMarker); }
372 }
373
374 if (state.header) { styles.push(tokenTypes.header, tokenTypes.header + "-" + state.header); }
375
376 if (state.quote) {
377 styles.push(tokenTypes.quote);
378
379 // Add `quote-#` where the maximum for `#` is modeCfg.maxBlockquoteDepth
380 if (!modeCfg.maxBlockquoteDepth || modeCfg.maxBlockquoteDepth >= state.quote) {
381 styles.push(tokenTypes.quote + "-" + state.quote);
382 } else {
383 styles.push(tokenTypes.quote + "-" + modeCfg.maxBlockquoteDepth);
384 }
385 }
386
387 if (state.list !== false) {
388 var listMod = (state.listStack.length - 1) % 3;
389 if (!listMod) {
390 styles.push(tokenTypes.list1);
391 } else if (listMod === 1) {
392 styles.push(tokenTypes.list2);
393 } else {
394 styles.push(tokenTypes.list3);
395 }
396 }
397
398 if (state.trailingSpaceNewLine) {
399 styles.push("trailing-space-new-line");
400 } else if (state.trailingSpace) {
401 styles.push("trailing-space-" + (state.trailingSpace % 2 ? "a" : "b"));
402 }
403
404 return styles.length ? styles.join(' ') : null;
405 }
406
407 function handleText(stream, state) {
408 if (stream.match(textRE, true)) {
409 return getType(state);
410 }
411 return undefined;
412 }
413
414 function inlineNormal(stream, state) {
415 var style = state.text(stream, state);
416 if (typeof style !== 'undefined')
417 return style;
418
419 if (state.list) { // List marker (*, +, -, 1., etc)
420 state.list = null;
421 return getType(state);
422 }
423
424 if (state.taskList) {
425 var taskOpen = stream.match(taskListRE, true)[1] === " ";
426 if (taskOpen) state.taskOpen = true;
427 else state.taskClosed = true;
428 if (modeCfg.highlightFormatting) state.formatting = "task";
429 state.taskList = false;
430 return getType(state);
431 }
432
433 state.taskOpen = false;
434 state.taskClosed = false;
435
436 if (state.header && stream.match(/^#+$/, true)) {
437 if (modeCfg.highlightFormatting) state.formatting = "header";
438 return getType(state);
439 }
440
441 var ch = stream.next();
442
443 // Matches link titles present on next line
444 if (state.linkTitle) {
445 state.linkTitle = false;
446 var matchCh = ch;
447 if (ch === '(') {
448 matchCh = ')';
449 }
450 matchCh = (matchCh+'').replace(/([.?*+^\[\]\\(){}|-])/g, "\\$1");
451 var regex = '^\\s*(?:[^' + matchCh + '\\\\]+|\\\\\\\\|\\\\.)' + matchCh;
452 if (stream.match(new RegExp(regex), true)) {
453 return tokenTypes.linkHref;
454 }
455 }
456
457 // If this block is changed, it may need to be updated in GFM mode
458 if (ch === '`') {
459 var previousFormatting = state.formatting;
460 if (modeCfg.highlightFormatting) state.formatting = "code";
461 stream.eatWhile('`');
462 var count = stream.current().length
463 if (state.code == 0 && (!state.quote || count == 1)) {
464 state.code = count
465 return getType(state)
466 } else if (count == state.code) { // Must be exact
467 var t = getType(state)
468 state.code = 0
469 return t
470 } else {
471 state.formatting = previousFormatting
472 return getType(state)
473 }
474 } else if (state.code) {
475 return getType(state);
476 }
477
478 if (ch === '\\') {
479 stream.next();
480 if (modeCfg.highlightFormatting) {
481 var type = getType(state);
482 var formattingEscape = tokenTypes.formatting + "-escape";
483 return type ? type + " " + formattingEscape : formattingEscape;
484 }
485 }
486
487 if (ch === '!' && stream.match(/\[[^\]]*\] ?(?:\(|\[)/, false)) {
488 state.imageMarker = true;
489 state.image = true;
490 if (modeCfg.highlightFormatting) state.formatting = "image";
491 return getType(state);
492 }
493
494 if (ch === '[' && state.imageMarker && stream.match(/[^\]]*\](\(.*?\)| ?\[.*?\])/, false)) {
495 state.imageMarker = false;
496 state.imageAltText = true
497 if (modeCfg.highlightFormatting) state.formatting = "image";
498 return getType(state);
499 }
500
501 if (ch === ']' && state.imageAltText) {
502 if (modeCfg.highlightFormatting) state.formatting = "image";
503 var type = getType(state);
504 state.imageAltText = false;
505 state.image = false;
506 state.inline = state.f = linkHref;
507 return type;
508 }
509
510 if (ch === '[' && !state.image) {
511 if (state.linkText && stream.match(/^.*?\]/)) return getType(state)
512 state.linkText = true;
513 if (modeCfg.highlightFormatting) state.formatting = "link";
514 return getType(state);
515 }
516
517 if (ch === ']' && state.linkText) {
518 if (modeCfg.highlightFormatting) state.formatting = "link";
519 var type = getType(state);
520 state.linkText = false;
521 state.inline = state.f = stream.match(/\(.*?\)| ?\[.*?\]/, false) ? linkHref : inlineNormal
522 return type;
523 }
524
525 if (ch === '<' && stream.match(/^(https?|ftps?):\/\/(?:[^\\>]|\\.)+>/, false)) {
526 state.f = state.inline = linkInline;
527 if (modeCfg.highlightFormatting) state.formatting = "link";
528 var type = getType(state);
529 if (type){
530 type += " ";
531 } else {
532 type = "";
533 }
534 return type + tokenTypes.linkInline;
535 }
536
537 if (ch === '<' && stream.match(/^[^> \\]+@(?:[^\\>]|\\.)+>/, false)) {
538 state.f = state.inline = linkInline;
539 if (modeCfg.highlightFormatting) state.formatting = "link";
540 var type = getType(state);
541 if (type){
542 type += " ";
543 } else {
544 type = "";
545 }
546 return type + tokenTypes.linkEmail;
547 }
548
549 if (modeCfg.xml && ch === '<' && stream.match(/^(!--|\?|!\[CDATA\[|[a-z][a-z0-9-]*(?:\s+[a-z_:.\-]+(?:\s*=\s*[^>]+)?)*\s*(?:>|$))/i, false)) {
550 var end = stream.string.indexOf(">", stream.pos);
551 if (end != -1) {
552 var atts = stream.string.substring(stream.start, end);
553 if (/markdown\s*=\s*('|"){0,1}1('|"){0,1}/.test(atts)) state.md_inside = true;
554 }
555 stream.backUp(1);
556 state.htmlState = CodeMirror.startState(htmlMode);
557 return switchBlock(stream, state, htmlBlock);
558 }
559
560 if (modeCfg.xml && ch === '<' && stream.match(/^\/\w*?>/)) {
561 state.md_inside = false;
562 return "tag";
563 } else if (ch === "*" || ch === "_") {
564 var len = 1, before = stream.pos == 1 ? " " : stream.string.charAt(stream.pos - 2)
565 while (len < 3 && stream.eat(ch)) len++
566 var after = stream.peek() || " "
567 // See http://spec.commonmark.org/0.27/#emphasis-and-strong-emphasis
568 var leftFlanking = !/\s/.test(after) && (!punctuation.test(after) || /\s/.test(before) || punctuation.test(before))
569 var rightFlanking = !/\s/.test(before) && (!punctuation.test(before) || /\s/.test(after) || punctuation.test(after))
570 var setEm = null, setStrong = null
571 if (len % 2) { // Em
572 if (!state.em && leftFlanking && (ch === "*" || !rightFlanking || punctuation.test(before)))
573 setEm = true
574 else if (state.em == ch && rightFlanking && (ch === "*" || !leftFlanking || punctuation.test(after)))
575 setEm = false
576 }
577 if (len > 1) { // Strong
578 if (!state.strong && leftFlanking && (ch === "*" || !rightFlanking || punctuation.test(before)))
579 setStrong = true
580 else if (state.strong == ch && rightFlanking && (ch === "*" || !leftFlanking || punctuation.test(after)))
581 setStrong = false
582 }
583 if (setStrong != null || setEm != null) {
584 if (modeCfg.highlightFormatting) state.formatting = setEm == null ? "strong" : setStrong == null ? "em" : "strong em"
585 if (setEm === true) state.em = ch
586 if (setStrong === true) state.strong = ch
587 var t = getType(state)
588 if (setEm === false) state.em = false
589 if (setStrong === false) state.strong = false
590 return t
591 }
592 } else if (ch === ' ') {
593 if (stream.eat('*') || stream.eat('_')) { // Probably surrounded by spaces
594 if (stream.peek() === ' ') { // Surrounded by spaces, ignore
595 return getType(state);
596 } else { // Not surrounded by spaces, back up pointer
597 stream.backUp(1);
598 }
599 }
600 }
601
602 if (modeCfg.strikethrough) {
603 if (ch === '~' && stream.eatWhile(ch)) {
604 if (state.strikethrough) {// Remove strikethrough
605 if (modeCfg.highlightFormatting) state.formatting = "strikethrough";
606 var t = getType(state);
607 state.strikethrough = false;
608 return t;
609 } else if (stream.match(/^[^\s]/, false)) {// Add strikethrough
610 state.strikethrough = true;
611 if (modeCfg.highlightFormatting) state.formatting = "strikethrough";
612 return getType(state);
613 }
614 } else if (ch === ' ') {
615 if (stream.match(/^~~/, true)) { // Probably surrounded by space
616 if (stream.peek() === ' ') { // Surrounded by spaces, ignore
617 return getType(state);
618 } else { // Not surrounded by spaces, back up pointer
619 stream.backUp(2);
620 }
621 }
622 }
623 }
624
625 if (modeCfg.emoji && ch === ":" && stream.match(/^(?:[a-z_\d+][a-z_\d+-]*|\-[a-z_\d+][a-z_\d+-]*):/)) {
626 state.emoji = true;
627 if (modeCfg.highlightFormatting) state.formatting = "emoji";
628 var retType = getType(state);
629 state.emoji = false;
630 return retType;
631 }
632
633 if (ch === ' ') {
634 if (stream.match(/^ +$/, false)) {
635 state.trailingSpace++;
636 } else if (state.trailingSpace) {
637 state.trailingSpaceNewLine = true;
638 }
639 }
640
641 return getType(state);
642 }
643
644 function linkInline(stream, state) {
645 var ch = stream.next();
646
647 if (ch === ">") {
648 state.f = state.inline = inlineNormal;
649 if (modeCfg.highlightFormatting) state.formatting = "link";
650 var type = getType(state);
651 if (type){
652 type += " ";
653 } else {
654 type = "";
655 }
656 return type + tokenTypes.linkInline;
657 }
658
659 stream.match(/^[^>]+/, true);
660
661 return tokenTypes.linkInline;
662 }
663
664 function linkHref(stream, state) {
665 // Check if space, and return NULL if so (to avoid marking the space)
666 if(stream.eatSpace()){
667 return null;
668 }
669 var ch = stream.next();
670 if (ch === '(' || ch === '[') {
671 state.f = state.inline = getLinkHrefInside(ch === "(" ? ")" : "]");
672 if (modeCfg.highlightFormatting) state.formatting = "link-string";
673 state.linkHref = true;
674 return getType(state);
675 }
676 return 'error';
677 }
678
679 var linkRE = {
680 ")": /^(?:[^\\\(\)]|\\.|\((?:[^\\\(\)]|\\.)*\))*?(?=\))/,
681 "]": /^(?:[^\\\[\]]|\\.|\[(?:[^\\\[\]]|\\.)*\])*?(?=\])/
682 }
683
684 function getLinkHrefInside(endChar) {
685 return function(stream, state) {
686 var ch = stream.next();
687
688 if (ch === endChar) {
689 state.f = state.inline = inlineNormal;
690 if (modeCfg.highlightFormatting) state.formatting = "link-string";
691 var returnState = getType(state);
692 state.linkHref = false;
693 return returnState;
694 }
695
696 stream.match(linkRE[endChar])
697 state.linkHref = true;
698 return getType(state);
699 };
700 }
701
702 function footnoteLink(stream, state) {
703 if (stream.match(/^([^\]\\]|\\.)*\]:/, false)) {
704 state.f = footnoteLinkInside;
705 stream.next(); // Consume [
706 if (modeCfg.highlightFormatting) state.formatting = "link";
707 state.linkText = true;
708 return getType(state);
709 }
710 return switchInline(stream, state, inlineNormal);
711 }
712
713 function footnoteLinkInside(stream, state) {
714 if (stream.match(/^\]:/, true)) {
715 state.f = state.inline = footnoteUrl;
716 if (modeCfg.highlightFormatting) state.formatting = "link";
717 var returnType = getType(state);
718 state.linkText = false;
719 return returnType;
720 }
721
722 stream.match(/^([^\]\\]|\\.)+/, true);
723
724 return tokenTypes.linkText;
725 }
726
727 function footnoteUrl(stream, state) {
728 // Check if space, and return NULL if so (to avoid marking the space)
729 if(stream.eatSpace()){
730 return null;
731 }
732 // Match URL
733 stream.match(/^[^\s]+/, true);
734 // Check for link title
735 if (stream.peek() === undefined) { // End of line, set flag to check next line
736 state.linkTitle = true;
737 } else { // More content on line, check if link title
738 stream.match(/^(?:\s+(?:"(?:[^"\\]|\\\\|\\.)+"|'(?:[^'\\]|\\\\|\\.)+'|\((?:[^)\\]|\\\\|\\.)+\)))?/, true);
739 }
740 state.f = state.inline = inlineNormal;
741 return tokenTypes.linkHref + " url";
742 }
743
744 var mode = {
745 startState: function() {
746 return {
747 f: blockNormal,
748
749 prevLine: {stream: null},
750 thisLine: {stream: null},
751
752 block: blockNormal,
753 htmlState: null,
754 indentation: 0,
755
756 inline: inlineNormal,
757 text: handleText,
758
759 formatting: false,
760 linkText: false,
761 linkHref: false,
762 linkTitle: false,
763 code: 0,
764 em: false,
765 strong: false,
766 header: 0,
767 setext: 0,
768 hr: false,
769 taskList: false,
770 list: false,
771 listStack: [],
772 quote: 0,
773 trailingSpace: 0,
774 trailingSpaceNewLine: false,
775 strikethrough: false,
776 emoji: false,
777 fencedEndRE: null
778 };
779 },
780
781 copyState: function(s) {
782 return {
783 f: s.f,
784
785 prevLine: s.prevLine,
786 thisLine: s.thisLine,
787
788 block: s.block,
789 htmlState: s.htmlState && CodeMirror.copyState(htmlMode, s.htmlState),
790 indentation: s.indentation,
791
792 localMode: s.localMode,
793 localState: s.localMode ? CodeMirror.copyState(s.localMode, s.localState) : null,
794
795 inline: s.inline,
796 text: s.text,
797 formatting: false,
798 linkText: s.linkText,
799 linkTitle: s.linkTitle,
800 linkHref: s.linkHref,
801 code: s.code,
802 em: s.em,
803 strong: s.strong,
804 strikethrough: s.strikethrough,
805 emoji: s.emoji,
806 header: s.header,
807 setext: s.setext,
808 hr: s.hr,
809 taskList: s.taskList,
810 list: s.list,
811 listStack: s.listStack.slice(0),
812 quote: s.quote,
813 indentedCode: s.indentedCode,
814 trailingSpace: s.trailingSpace,
815 trailingSpaceNewLine: s.trailingSpaceNewLine,
816 md_inside: s.md_inside,
817 fencedEndRE: s.fencedEndRE
818 };
819 },
820
821 token: function(stream, state) {
822
823 // Reset state.formatting
824 state.formatting = false;
825
826 if (stream != state.thisLine.stream) {
827 state.header = 0;
828 state.hr = false;
829
830 if (stream.match(/^\s*$/, true)) {
831 blankLine(state);
832 return null;
833 }
834
835 state.prevLine = state.thisLine
836 state.thisLine = {stream: stream}
837
838 // Reset state.taskList
839 state.taskList = false;
840
841 // Reset state.trailingSpace
842 state.trailingSpace = 0;
843 state.trailingSpaceNewLine = false;
844
845 if (!state.localState) {
846 state.f = state.block;
847 if (state.f != htmlBlock) {
848 var indentation = stream.match(/^\s*/, true)[0].replace(/\t/g, expandedTab).length;
849 state.indentation = indentation;
850 state.indentationDiff = null;
851 if (indentation > 0) return null;
852 }
853 }
854 }
855 return state.f(stream, state);
856 },
857
858 innerMode: function(state) {
859 if (state.block == htmlBlock) return {state: state.htmlState, mode: htmlMode};
860 if (state.localState) return {state: state.localState, mode: state.localMode};
861 return {state: state, mode: mode};
862 },
863
864 indent: function(state, textAfter, line) {
865 if (state.block == htmlBlock && htmlMode.indent) return htmlMode.indent(state.htmlState, textAfter, line)
866 if (state.localState && state.localMode.indent) return state.localMode.indent(state.localState, textAfter, line)
867 return CodeMirror.Pass
868 },
869
870 blankLine: blankLine,
871
872 getType: getType,
873
874 blockCommentStart: "<!--",
875 blockCommentEnd: "-->",
876 closeBrackets: "()[]{}''\"\"``",
877 fold: "markdown"
878 };
879 return mode;
880}, "xml");
881
882CodeMirror.defineMIME("text/markdown", "markdown");
883
884CodeMirror.defineMIME("text/x-markdown", "markdown");
885
886});