--- /dev/null
+/* Copyright (c) 2006, Ivan Sagalaev
+ All rights reserved.
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of highlight.js nor the names of its contributors
+ may be used to endorse or promote products derived from this software
+ without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
+ EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
+ DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+define([], function () {
+ var hljs = new function() {
+
+ /* Utility functions */
+
+ function escape(value) {
+ return value.replace(/&/gm, '&').replace(/</gm, '<').replace(/>/gm, '>');
+ }
+
+ function tag(node) {
+ return node.nodeName.toLowerCase();
+ }
+
+ function testRe(re, lexeme) {
+ var match = re && re.exec(lexeme);
+ return match && match.index == 0;
+ }
+
+ function blockLanguage(block) {
+ var classes = (block.className + ' ' + (block.parentNode ? block.parentNode.className : '')).split(/\s+/);
+ classes = classes.map(function(c) {return c.replace(/^lang(uage)?-/, '');});
+ return classes.filter(function(c) {return getLanguage(c) || c == 'no-highlight';})[0];
+ }
+
+ function inherit(parent, obj) {
+ var result = {};
+ for (var key in parent)
+ result[key] = parent[key];
+ if (obj)
+ for (var key in obj)
+ result[key] = obj[key];
+ return result;
+ };
+
+ /* Stream merging */
+
+ function nodeStream(node) {
+ var result = [];
+ (function _nodeStream(node, offset) {
+ for (var child = node.firstChild; child; child = child.nextSibling) {
+ if (child.nodeType == 3)
+ offset += child.nodeValue.length;
+ else if (tag(child) == 'br')
+ offset += 1;
+ else if (child.nodeType == 1) {
+ result.push({
+ event: 'start',
+ offset: offset,
+ node: child
+ });
+ offset = _nodeStream(child, offset);
+ result.push({
+ event: 'stop',
+ offset: offset,
+ node: child
+ });
+ }
+ }
+ return offset;
+ })(node, 0);
+ return result;
+ }
+
+ function mergeStreams(original, highlighted, value) {
+ var processed = 0;
+ var result = '';
+ var nodeStack = [];
+
+ function selectStream() {
+ if (!original.length || !highlighted.length) {
+ return original.length ? original : highlighted;
+ }
+ if (original[0].offset != highlighted[0].offset) {
+ return (original[0].offset < highlighted[0].offset) ? original : highlighted;
+ }
+
+ /*
+ To avoid starting the stream just before it should stop the order is
+ ensured that original always starts first and closes last:
+
+ if (event1 == 'start' && event2 == 'start')
+ return original;
+ if (event1 == 'start' && event2 == 'stop')
+ return highlighted;
+ if (event1 == 'stop' && event2 == 'start')
+ return original;
+ if (event1 == 'stop' && event2 == 'stop')
+ return highlighted;
+
+ ... which is collapsed to:
+ */
+ return highlighted[0].event == 'start' ? original : highlighted;
+ }
+
+ function open(node) {
+ function attr_str(a) {return ' ' + a.nodeName + '="' + escape(a.value) + '"';}
+ result += '<' + tag(node) + Array.prototype.map.call(node.attributes, attr_str).join('') + '>';
+ }
+
+ function close(node) {
+ result += '</' + tag(node) + '>';
+ }
+
+ function render(event) {
+ (event.event == 'start' ? open : close)(event.node);
+ }
+
+ while (original.length || highlighted.length) {
+ var stream = selectStream();
+ result += escape(value.substr(processed, stream[0].offset - processed));
+ processed = stream[0].offset;
+ if (stream == original) {
+ /*
+ On any opening or closing tag of the original markup we first close
+ the entire highlighted node stack, then render the original tag along
+ with all the following original tags at the same offset and then
+ reopen all the tags on the highlighted stack.
+ */
+ nodeStack.reverse().forEach(close);
+ do {
+ render(stream.splice(0, 1)[0]);
+ stream = selectStream();
+ } while (stream == original && stream.length && stream[0].offset == processed);
+ nodeStack.reverse().forEach(open);
+ } else {
+ if (stream[0].event == 'start') {
+ nodeStack.push(stream[0].node);
+ } else {
+ nodeStack.pop();
+ }
+ render(stream.splice(0, 1)[0]);
+ }
+ }
+ return result + escape(value.substr(processed));
+ }
+
+ /* Initialization */
+
+ function compileLanguage(language) {
+
+ function reStr(re) {
+ return (re && re.source) || re;
+ }
+
+ function langRe(value, global) {
+ return RegExp(
+ reStr(value),
+ 'm' + (language.case_insensitive ? 'i' : '') + (global ? 'g' : '')
+ );
+ }
+
+ function compileMode(mode, parent) {
+ if (mode.compiled)
+ return;
+ mode.compiled = true;
+
+ mode.keywords = mode.keywords || mode.beginKeywords;
+ if (mode.keywords) {
+ var compiled_keywords = {};
+
+ function flatten(className, str) {
+ if (language.case_insensitive) {
+ str = str.toLowerCase();
+ }
+ str.split(' ').forEach(function(kw) {
+ var pair = kw.split('|');
+ compiled_keywords[pair[0]] = [className, pair[1] ? Number(pair[1]) : 1];
+ });
+ }
+
+ if (typeof mode.keywords == 'string') { // string
+ flatten('keyword', mode.keywords);
+ } else {
+ Object.keys(mode.keywords).forEach(function (className) {
+ flatten(className, mode.keywords[className]);
+ });
+ }
+ mode.keywords = compiled_keywords;
+ }
+ mode.lexemesRe = langRe(mode.lexemes || /\b[A-Za-z0-9_]+\b/, true);
+
+ if (parent) {
+ if (mode.beginKeywords) {
+ mode.begin = '\\b(' + mode.beginKeywords.split(' ').join('|') + ')\\b';
+ }
+ if (!mode.begin)
+ mode.begin = /\B|\b/;
+ mode.beginRe = langRe(mode.begin);
+ if (!mode.end && !mode.endsWithParent)
+ mode.end = /\B|\b/;
+ if (mode.end)
+ mode.endRe = langRe(mode.end);
+ mode.terminator_end = reStr(mode.end) || '';
+ if (mode.endsWithParent && parent.terminator_end)
+ mode.terminator_end += (mode.end ? '|' : '') + parent.terminator_end;
+ }
+ if (mode.illegal)
+ mode.illegalRe = langRe(mode.illegal);
+ if (mode.relevance === undefined)
+ mode.relevance = 1;
+ if (!mode.contains) {
+ mode.contains = [];
+ }
+ var expanded_contains = [];
+ mode.contains.forEach(function(c) {
+ if (c.variants) {
+ c.variants.forEach(function(v) {expanded_contains.push(inherit(c, v));});
+ } else {
+ expanded_contains.push(c == 'self' ? mode : c);
+ }
+ });
+ mode.contains = expanded_contains;
+ mode.contains.forEach(function(c) {compileMode(c, mode);});
+
+ if (mode.starts) {
+ compileMode(mode.starts, parent);
+ }
+
+ var terminators =
+ mode.contains.map(function(c) {
+ return c.beginKeywords ? '\\.?(' + c.begin + ')\\.?' : c.begin;
+ })
+ .concat([mode.terminator_end, mode.illegal])
+ .map(reStr)
+ .filter(Boolean);
+ mode.terminators = terminators.length ? langRe(terminators.join('|'), true) : {exec: function(s) {return null;}};
+
+ mode.continuation = {};
+ }
+
+ compileMode(language);
+ }
+
+ /*
+ Core highlighting function. Accepts a language name, or an alias, and a
+ string with the code to highlight. Returns an object with the following
+ properties:
+
+ - relevance (int)
+ - value (an HTML string with highlighting markup)
+
+ */
+ function highlight(name, value, ignore_illegals, continuation) {
+
+ function subMode(lexeme, mode) {
+ for (var i = 0; i < mode.contains.length; i++) {
+ if (testRe(mode.contains[i].beginRe, lexeme)) {
+ return mode.contains[i];
+ }
+ }
+ }
+
+ function endOfMode(mode, lexeme) {
+ if (testRe(mode.endRe, lexeme)) {
+ return mode;
+ }
+ if (mode.endsWithParent) {
+ return endOfMode(mode.parent, lexeme);
+ }
+ }
+
+ function isIllegal(lexeme, mode) {
+ return !ignore_illegals && testRe(mode.illegalRe, lexeme);
+ }
+
+ function keywordMatch(mode, match) {
+ var match_str = language.case_insensitive ? match[0].toLowerCase() : match[0];
+ return mode.keywords.hasOwnProperty(match_str) && mode.keywords[match_str];
+ }
+
+ function buildSpan(classname, insideSpan, leaveOpen, noPrefix) {
+ var classPrefix = noPrefix ? '' : options.classPrefix,
+ openSpan = '<span class="' + classPrefix,
+ closeSpan = leaveOpen ? '' : '</span>';
+
+ openSpan += classname + '">';
+
+ return openSpan + insideSpan + closeSpan;
+ }
+
+ function processKeywords() {
+ if (!top.keywords)
+ return escape(mode_buffer);
+ var result = '';
+ var last_index = 0;
+ top.lexemesRe.lastIndex = 0;
+ var match = top.lexemesRe.exec(mode_buffer);
+ while (match) {
+ result += escape(mode_buffer.substr(last_index, match.index - last_index));
+ var keyword_match = keywordMatch(top, match);
+ if (keyword_match) {
+ relevance += keyword_match[1];
+ result += buildSpan(keyword_match[0], escape(match[0]));
+ } else {
+ result += escape(match[0]);
+ }
+ last_index = top.lexemesRe.lastIndex;
+ match = top.lexemesRe.exec(mode_buffer);
+ }
+ return result + escape(mode_buffer.substr(last_index));
+ }
+
+ function processSubLanguage() {
+ if (top.subLanguage && !languages[top.subLanguage]) {
+ return escape(mode_buffer);
+ }
+ var result = top.subLanguage ? highlight(top.subLanguage, mode_buffer, true, top.continuation.top) : highlightAuto(mode_buffer);
+ // Counting embedded language score towards the host language may be disabled
+ // with zeroing the containing mode relevance. Usecase in point is Markdown that
+ // allows XML everywhere and makes every XML snippet to have a much larger Markdown
+ // score.
+ if (top.relevance > 0) {
+ relevance += result.relevance;
+ }
+ if (top.subLanguageMode == 'continuous') {
+ top.continuation.top = result.top;
+ }
+ return buildSpan(result.language, result.value, false, true);
+ }
+
+ function processBuffer() {
+ return top.subLanguage !== undefined ? processSubLanguage() : processKeywords();
+ }
+
+ function startNewMode(mode, lexeme) {
+ var markup = mode.className? buildSpan(mode.className, '', true): '';
+ if (mode.returnBegin) {
+ result += markup;
+ mode_buffer = '';
+ } else if (mode.excludeBegin) {
+ result += escape(lexeme) + markup;
+ mode_buffer = '';
+ } else {
+ result += markup;
+ mode_buffer = lexeme;
+ }
+ top = Object.create(mode, {parent: {value: top}});
+ }
+
+ function processLexeme(buffer, lexeme) {
+
+ mode_buffer += buffer;
+ if (lexeme === undefined) {
+ result += processBuffer();
+ return 0;
+ }
+
+ var new_mode = subMode(lexeme, top);
+ if (new_mode) {
+ result += processBuffer();
+ startNewMode(new_mode, lexeme);
+ return new_mode.returnBegin ? 0 : lexeme.length;
+ }
+
+ var end_mode = endOfMode(top, lexeme);
+ if (end_mode) {
+ var origin = top;
+ if (!(origin.returnEnd || origin.excludeEnd)) {
+ mode_buffer += lexeme;
+ }
+ result += processBuffer();
+ do {
+ if (top.className) {
+ result += '</span>';
+ }
+ relevance += top.relevance;
+ top = top.parent;
+ } while (top != end_mode.parent);
+ if (origin.excludeEnd) {
+ result += escape(lexeme);
+ }
+ mode_buffer = '';
+ if (end_mode.starts) {
+ startNewMode(end_mode.starts, '');
+ }
+ return origin.returnEnd ? 0 : lexeme.length;
+ }
+
+ if (isIllegal(lexeme, top))
+ throw new Error('Illegal lexeme "' + lexeme + '" for mode "' + (top.className || '<unnamed>') + '"');
+
+ /*
+ Parser should not reach this point as all types of lexemes should be caught
+ earlier, but if it does due to some bug make sure it advances at least one
+ character forward to prevent infinite looping.
+ */
+ mode_buffer += lexeme;
+ return lexeme.length || 1;
+ }
+
+ var language = getLanguage(name);
+ if (!language) {
+ throw new Error('Unknown language: "' + name + '"');
+ }
+
+ compileLanguage(language);
+ var top = continuation || language;
+ var result = '';
+ for(var current = top; current != language; current = current.parent) {
+ if (current.className) {
+ result += buildSpan(current.className, result, true);
+ }
+ }
+ var mode_buffer = '';
+ var relevance = 0;
+ try {
+ var match, count, index = 0;
+ while (true) {
+ top.terminators.lastIndex = index;
+ match = top.terminators.exec(value);
+ if (!match)
+ break;
+ count = processLexeme(value.substr(index, match.index - index), match[0]);
+ index = match.index + count;
+ }
+ processLexeme(value.substr(index));
+ for(var current = top; current.parent; current = current.parent) { // close dangling modes
+ if (current.className) {
+ result += '</span>';
+ }
+ };
+ return {
+ relevance: relevance,
+ value: result,
+ language: name,
+ top: top
+ };
+ } catch (e) {
+ if (e.message.indexOf('Illegal') != -1) {
+ return {
+ relevance: 0,
+ value: escape(value)
+ };
+ } else {
+ throw e;
+ }
+ }
+ }
+
+ /*
+ Highlighting with language detection. Accepts a string with the code to
+ highlight. Returns an object with the following properties:
+
+ - language (detected language)
+ - relevance (int)
+ - value (an HTML string with highlighting markup)
+ - second_best (object with the same structure for second-best heuristically
+ detected language, may be absent)
+
+ */
+ function highlightAuto(text, languageSubset) {
+ languageSubset = languageSubset || options.languages || Object.keys(languages);
+ var result = {
+ relevance: 0,
+ value: escape(text)
+ };
+ var second_best = result;
+ languageSubset.forEach(function(name) {
+ if (!getLanguage(name)) {
+ return;
+ }
+ var current = highlight(name, text, false);
+ current.language = name;
+ if (current.relevance > second_best.relevance) {
+ second_best = current;
+ }
+ if (current.relevance > result.relevance) {
+ second_best = result;
+ result = current;
+ }
+ });
+ if (second_best.language) {
+ result.second_best = second_best;
+ }
+ return result;
+ }
+
+ /*
+ Post-processing of the highlighted markup:
+
+ - replace TABs with something more useful
+ - replace real line-breaks with '<br>' for non-pre containers
+
+ */
+ function fixMarkup(value) {
+ if (options.tabReplace) {
+ value = value.replace(/^((<[^>]+>|\t)+)/gm, function(match, p1, offset, s) {
+ return p1.replace(/\t/g, options.tabReplace);
+ });
+ }
+ if (options.useBR) {
+ value = value.replace(/\n/g, '<br>');
+ }
+ return value;
+ }
+
+ /*
+ Applies highlighting to a DOM node containing code. Accepts a DOM node and
+ two optional parameters for fixMarkup.
+ */
+ function highlightBlock(block) {
+ var text = options.useBR ? block.innerHTML
+ .replace(/\n/g,'').replace(/<br>|<br [^>]*>/g, '\n').replace(/<[^>]*>/g,'')
+ : block.textContent;
+ var language = blockLanguage(block);
+ if (language == 'no-highlight')
+ return;
+ var result = language ? highlight(language, text, true) : highlightAuto(text);
+ var original = nodeStream(block);
+ if (original.length) {
+ var pre = document.createElementNS('http://www.w3.org/1999/xhtml', 'pre');
+ pre.innerHTML = result.value;
+ result.value = mergeStreams(original, nodeStream(pre), text);
+ }
+ result.value = fixMarkup(result.value);
+
+ block.innerHTML = result.value;
+ block.className += ' hljs ' + (!language && result.language || '');
+ block.result = {
+ language: result.language,
+ re: result.relevance
+ };
+ if (result.second_best) {
+ block.second_best = {
+ language: result.second_best.language,
+ re: result.second_best.relevance
+ };
+ }
+ }
+
+ var options = {
+ classPrefix: 'hljs-',
+ tabReplace: null,
+ useBR: false,
+ languages: undefined
+ };
+
+ /*
+ Updates highlight.js global options with values passed in the form of an object
+ */
+ function configure(user_options) {
+ options = inherit(options, user_options);
+ }
+
+ /*
+ Applies highlighting to all <pre><code>..</code></pre> blocks on a page.
+ */
+ function initHighlighting() {
+ if (initHighlighting.called)
+ return;
+ initHighlighting.called = true;
+
+ var blocks = document.querySelectorAll('pre code');
+ Array.prototype.forEach.call(blocks, highlightBlock);
+ }
+
+ /*
+ Attaches highlighting to the page load event.
+ */
+ function initHighlightingOnLoad() {
+ addEventListener('DOMContentLoaded', initHighlighting, false);
+ addEventListener('load', initHighlighting, false);
+ }
+
+ var languages = {};
+ var aliases = {};
+
+ function registerLanguage(name, language) {
+ var lang = languages[name] = language(this);
+ if (lang.aliases) {
+ lang.aliases.forEach(function(alias) {aliases[alias] = name;});
+ }
+ }
+
+ function listLanguages() {
+ return Object.keys(languages);
+ }
+
+ function getLanguage(name) {
+ return languages[name] || languages[aliases[name]];
+ }
+
+ /* Interface definition */
+
+ this.highlight = highlight;
+ this.highlightAuto = highlightAuto;
+ this.fixMarkup = fixMarkup;
+ this.highlightBlock = highlightBlock;
+ this.configure = configure;
+ this.initHighlighting = initHighlighting;
+ this.initHighlightingOnLoad = initHighlightingOnLoad;
+ this.registerLanguage = registerLanguage;
+ this.listLanguages = listLanguages;
+ this.getLanguage = getLanguage;
+ this.inherit = inherit;
+
+ // Common regexps
+ this.IDENT_RE = '[a-zA-Z][a-zA-Z0-9_]*';
+ this.UNDERSCORE_IDENT_RE = '[a-zA-Z_][a-zA-Z0-9_]*';
+ this.NUMBER_RE = '\\b\\d+(\\.\\d+)?';
+ this.C_NUMBER_RE = '(\\b0[xX][a-fA-F0-9]+|(\\b\\d+(\\.\\d*)?|\\.\\d+)([eE][-+]?\\d+)?)'; // 0x..., 0..., decimal, float
+ this.BINARY_NUMBER_RE = '\\b(0b[01]+)'; // 0b...
+ this.RE_STARTERS_RE = '!|!=|!==|%|%=|&|&&|&=|\\*|\\*=|\\+|\\+=|,|-|-=|/=|/|:|;|<<|<<=|<=|<|===|==|=|>>>=|>>=|>=|>>>|>>|>|\\?|\\[|\\{|\\(|\\^|\\^=|\\||\\|=|\\|\\||~';
+
+ // Common modes
+ this.BACKSLASH_ESCAPE = {
+ begin: '\\\\[\\s\\S]', relevance: 0
+ };
+ this.APOS_STRING_MODE = {
+ className: 'string',
+ begin: '\'', end: '\'',
+ illegal: '\\n',
+ contains: [this.BACKSLASH_ESCAPE]
+ };
+ this.QUOTE_STRING_MODE = {
+ className: 'string',
+ begin: '"', end: '"',
+ illegal: '\\n',
+ contains: [this.BACKSLASH_ESCAPE]
+ };
+ this.PHRASAL_WORDS_MODE = {
+ begin: /\b(a|an|the|are|I|I'm|isn't|don't|doesn't|won't|but|just|should|pretty|simply|enough|gonna|going|wtf|so|such)\b/
+ };
+ this.C_LINE_COMMENT_MODE = {
+ className: 'comment',
+ begin: '//', end: '$',
+ contains: [this.PHRASAL_WORDS_MODE]
+ };
+ this.C_BLOCK_COMMENT_MODE = {
+ className: 'comment',
+ begin: '/\\*', end: '\\*/',
+ contains: [this.PHRASAL_WORDS_MODE]
+ };
+ this.HASH_COMMENT_MODE = {
+ className: 'comment',
+ begin: '#', end: '$',
+ contains: [this.PHRASAL_WORDS_MODE]
+ };
+ this.NUMBER_MODE = {
+ className: 'number',
+ begin: this.NUMBER_RE,
+ relevance: 0
+ };
+ this.C_NUMBER_MODE = {
+ className: 'number',
+ begin: this.C_NUMBER_RE,
+ relevance: 0
+ };
+ this.BINARY_NUMBER_MODE = {
+ className: 'number',
+ begin: this.BINARY_NUMBER_RE,
+ relevance: 0
+ };
+ this.CSS_NUMBER_MODE = {
+ className: 'number',
+ begin: this.NUMBER_RE + '(' +
+ '%|em|ex|ch|rem' +
+ '|vw|vh|vmin|vmax' +
+ '|cm|mm|in|pt|pc|px' +
+ '|deg|grad|rad|turn' +
+ '|s|ms' +
+ '|Hz|kHz' +
+ '|dpi|dpcm|dppx' +
+ ')?',
+ relevance: 0
+ };
+ this.REGEXP_MODE = {
+ className: 'regexp',
+ begin: /\//, end: /\/[gim]*/,
+ illegal: /\n/,
+ contains: [
+ this.BACKSLASH_ESCAPE,
+ {
+ begin: /\[/, end: /\]/,
+ relevance: 0,
+ contains: [this.BACKSLASH_ESCAPE]
+ }
+ ]
+ };
+ this.TITLE_MODE = {
+ className: 'title',
+ begin: this.IDENT_RE,
+ relevance: 0
+ };
+ this.UNDERSCORE_TITLE_MODE = {
+ className: 'title',
+ begin: this.UNDERSCORE_IDENT_RE,
+ relevance: 0
+ };
+ };
+ return hljs;
+});
+
nitlanguage / nit.git / commitdiff