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Diffstat (limited to 'toolkit/components/microformats/test/static/javascript/prettify.js')
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diff --git a/toolkit/components/microformats/test/static/javascript/prettify.js b/toolkit/components/microformats/test/static/javascript/prettify.js deleted file mode 100644 index 879dfd60f..000000000 --- a/toolkit/components/microformats/test/static/javascript/prettify.js +++ /dev/null @@ -1,1479 +0,0 @@ -// Copyright (C) 2006 Google Inc. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - - -/** - * @fileoverview - * some functions for browser-side pretty printing of code contained in html. - * - * <p> - * For a fairly comprehensive set of languages see the - * <a href="http://google-code-prettify.googlecode.com/svn/trunk/README.html#langs">README</a> - * file that came with this source. At a minimum, the lexer should work on a - * number of languages including C and friends, Java, Python, Bash, SQL, HTML, - * XML, CSS, Javascript, and Makefiles. It works passably on Ruby, PHP and Awk - * and a subset of Perl, but, because of commenting conventions, doesn't work on - * Smalltalk, Lisp-like, or CAML-like languages without an explicit lang class. - * <p> - * Usage: <ol> - * <li> include this source file in an html page via - * {@code <script type="text/javascript" src="/path/to/prettify.js"></script>} - * <li> define style rules. See the example page for examples. - * <li> mark the {@code <pre>} and {@code <code>} tags in your source with - * {@code class=prettyprint.} - * You can also use the (html deprecated) {@code <xmp>} tag, but the pretty - * printer needs to do more substantial DOM manipulations to support that, so - * some css styles may not be preserved. - * </ol> - * That's it. I wanted to keep the API as simple as possible, so there's no - * need to specify which language the code is in, but if you wish, you can add - * another class to the {@code <pre>} or {@code <code>} element to specify the - * language, as in {@code <pre class="prettyprint lang-java">}. Any class that - * starts with "lang-" followed by a file extension, specifies the file type. - * See the "lang-*.js" files in this directory for code that implements - * per-language file handlers. - * <p> - * Change log:<br> - * cbeust, 2006/08/22 - * <blockquote> - * Java annotations (start with "@") are now captured as literals ("lit") - * </blockquote> - * @requires console - */ - -// JSLint declarations -/*global console, document, navigator, setTimeout, window */ - -/** - * Split {@code prettyPrint} into multiple timeouts so as not to interfere with - * UI events. - * If set to {@code false}, {@code prettyPrint()} is synchronous. - */ -window['PR_SHOULD_USE_CONTINUATION'] = true; - -(function () { - // Keyword lists for various languages. - // We use things that coerce to strings to make them compact when minified - // and to defeat aggressive optimizers that fold large string constants. - var FLOW_CONTROL_KEYWORDS = ["break,continue,do,else,for,if,return,while"]; - var C_KEYWORDS = [FLOW_CONTROL_KEYWORDS,"auto,case,char,const,default," + - "double,enum,extern,float,goto,int,long,register,short,signed,sizeof," + - "static,struct,switch,typedef,union,unsigned,void,volatile"]; - var COMMON_KEYWORDS = [C_KEYWORDS,"catch,class,delete,false,import," + - "new,operator,private,protected,public,this,throw,true,try,typeof"]; - var CPP_KEYWORDS = [COMMON_KEYWORDS,"alignof,align_union,asm,axiom,bool," + - "concept,concept_map,const_cast,constexpr,decltype," + - "dynamic_cast,explicit,export,friend,inline,late_check," + - "mutable,namespace,nullptr,reinterpret_cast,static_assert,static_cast," + - "template,typeid,typename,using,virtual,where"]; - var JAVA_KEYWORDS = [COMMON_KEYWORDS, - "abstract,boolean,byte,extends,final,finally,implements,import," + - "instanceof,null,native,package,strictfp,super,synchronized,throws," + - "transient"]; - var CSHARP_KEYWORDS = [JAVA_KEYWORDS, - "as,base,by,checked,decimal,delegate,descending,dynamic,event," + - "fixed,foreach,from,group,implicit,in,interface,internal,into,is,lock," + - "object,out,override,orderby,params,partial,readonly,ref,sbyte,sealed," + - "stackalloc,string,select,uint,ulong,unchecked,unsafe,ushort,var"]; - var COFFEE_KEYWORDS = "all,and,by,catch,class,else,extends,false,finally," + - "for,if,in,is,isnt,loop,new,no,not,null,of,off,on,or,return,super,then," + - "true,try,unless,until,when,while,yes"; - var JSCRIPT_KEYWORDS = [COMMON_KEYWORDS, - "debugger,eval,export,function,get,null,set,undefined,var,with," + - "Infinity,NaN"]; - var PERL_KEYWORDS = "caller,delete,die,do,dump,elsif,eval,exit,foreach,for," + - "goto,if,import,last,local,my,next,no,our,print,package,redo,require," + - "sub,undef,unless,until,use,wantarray,while,BEGIN,END"; - var PYTHON_KEYWORDS = [FLOW_CONTROL_KEYWORDS, "and,as,assert,class,def,del," + - "elif,except,exec,finally,from,global,import,in,is,lambda," + - "nonlocal,not,or,pass,print,raise,try,with,yield," + - "False,True,None"]; - var RUBY_KEYWORDS = [FLOW_CONTROL_KEYWORDS, "alias,and,begin,case,class," + - "def,defined,elsif,end,ensure,false,in,module,next,nil,not,or,redo," + - "rescue,retry,self,super,then,true,undef,unless,until,when,yield," + - "BEGIN,END"]; - var SH_KEYWORDS = [FLOW_CONTROL_KEYWORDS, "case,done,elif,esac,eval,fi," + - "function,in,local,set,then,until"]; - var ALL_KEYWORDS = [ - CPP_KEYWORDS, CSHARP_KEYWORDS, JSCRIPT_KEYWORDS, PERL_KEYWORDS + - PYTHON_KEYWORDS, RUBY_KEYWORDS, SH_KEYWORDS]; - var C_TYPES = /^(DIR|FILE|vector|(de|priority_)?queue|list|stack|(const_)?iterator|(multi)?(set|map)|bitset|u?(int|float)\d*)/; - - // token style names. correspond to css classes - /** - * token style for a string literal - * @const - */ - var PR_STRING = 'str'; - /** - * token style for a keyword - * @const - */ - var PR_KEYWORD = 'kwd'; - /** - * token style for a comment - * @const - */ - var PR_COMMENT = 'com'; - /** - * token style for a type - * @const - */ - var PR_TYPE = 'typ'; - /** - * token style for a literal value. e.g. 1, null, true. - * @const - */ - var PR_LITERAL = 'lit'; - /** - * token style for a punctuation string. - * @const - */ - var PR_PUNCTUATION = 'pun'; - /** - * token style for a punctuation string. - * @const - */ - var PR_PLAIN = 'pln'; - - /** - * token style for an sgml tag. - * @const - */ - var PR_TAG = 'tag'; - /** - * token style for a markup declaration such as a DOCTYPE. - * @const - */ - var PR_DECLARATION = 'dec'; - /** - * token style for embedded source. - * @const - */ - var PR_SOURCE = 'src'; - /** - * token style for an sgml attribute name. - * @const - */ - var PR_ATTRIB_NAME = 'atn'; - /** - * token style for an sgml attribute value. - * @const - */ - var PR_ATTRIB_VALUE = 'atv'; - - /** - * A class that indicates a section of markup that is not code, e.g. to allow - * embedding of line numbers within code listings. - * @const - */ - var PR_NOCODE = 'nocode'; - - - -/** - * A set of tokens that can precede a regular expression literal in - * javascript - * http://web.archive.org/web/20070717142515/http://www.mozilla.org/js/language/js20/rationale/syntax.html - * has the full list, but I've removed ones that might be problematic when - * seen in languages that don't support regular expression literals. - * - * <p>Specifically, I've removed any keywords that can't precede a regexp - * literal in a syntactically legal javascript program, and I've removed the - * "in" keyword since it's not a keyword in many languages, and might be used - * as a count of inches. - * - * <p>The link a above does not accurately describe EcmaScript rules since - * it fails to distinguish between (a=++/b/i) and (a++/b/i) but it works - * very well in practice. - * - * @private - * @const - */ -var REGEXP_PRECEDER_PATTERN = '(?:^^\\.?|[+-]|\\!|\\!=|\\!==|\\#|\\%|\\%=|&|&&|&&=|&=|\\(|\\*|\\*=|\\+=|\\,|\\-=|\\->|\\/|\\/=|:|::|\\;|<|<<|<<=|<=|=|==|===|>|>=|>>|>>=|>>>|>>>=|\\?|\\@|\\[|\\^|\\^=|\\^\\^|\\^\\^=|\\{|\\||\\|=|\\|\\||\\|\\|=|\\~|break|case|continue|delete|do|else|finally|instanceof|return|throw|try|typeof)\\s*'; - -// CAVEAT: this does not properly handle the case where a regular -// expression immediately follows another since a regular expression may -// have flags for case-sensitivity and the like. Having regexp tokens -// adjacent is not valid in any language I'm aware of, so I'm punting. -// TODO: maybe style special characters inside a regexp as punctuation. - - - /** - * Given a group of {@link RegExp}s, returns a {@code RegExp} that globally - * matches the union of the sets of strings matched by the input RegExp. - * Since it matches globally, if the input strings have a start-of-input - * anchor (/^.../), it is ignored for the purposes of unioning. - * @param {Array.<RegExp>} regexs non multiline, non-global regexs. - * @return {RegExp} a global regex. - */ - function combinePrefixPatterns(regexs) { - var capturedGroupIndex = 0; - - var needToFoldCase = false; - var ignoreCase = false; - for (var i = 0, n = regexs.length; i < n; ++i) { - var regex = regexs[i]; - if (regex.ignoreCase) { - ignoreCase = true; - } else if (/[a-z]/i.test(regex.source.replace( - /\\u[0-9a-f]{4}|\\x[0-9a-f]{2}|\\[^ux]/gi, ''))) { - needToFoldCase = true; - ignoreCase = false; - break; - } - } - - var escapeCharToCodeUnit = { - 'b': 8, - 't': 9, - 'n': 0xa, - 'v': 0xb, - 'f': 0xc, - 'r': 0xd - }; - - function decodeEscape(charsetPart) { - var cc0 = charsetPart.charCodeAt(0); - if (cc0 !== 92 /* \\ */) { - return cc0; - } - var c1 = charsetPart.charAt(1); - cc0 = escapeCharToCodeUnit[c1]; - if (cc0) { - return cc0; - } else if ('0' <= c1 && c1 <= '7') { - return parseInt(charsetPart.substring(1), 8); - } else if (c1 === 'u' || c1 === 'x') { - return parseInt(charsetPart.substring(2), 16); - } else { - return charsetPart.charCodeAt(1); - } - } - - function encodeEscape(charCode) { - if (charCode < 0x20) { - return (charCode < 0x10 ? '\\x0' : '\\x') + charCode.toString(16); - } - var ch = String.fromCharCode(charCode); - if (ch === '\\' || ch === '-' || ch === '[' || ch === ']') { - ch = '\\' + ch; - } - return ch; - } - - function caseFoldCharset(charSet) { - var charsetParts = charSet.substring(1, charSet.length - 1).match( - new RegExp( - '\\\\u[0-9A-Fa-f]{4}' - + '|\\\\x[0-9A-Fa-f]{2}' - + '|\\\\[0-3][0-7]{0,2}' - + '|\\\\[0-7]{1,2}' - + '|\\\\[\\s\\S]' - + '|-' - + '|[^-\\\\]', - 'g')); - var groups = []; - var ranges = []; - var inverse = charsetParts[0] === '^'; - for (var i = inverse ? 1 : 0, n = charsetParts.length; i < n; ++i) { - var p = charsetParts[i]; - if (/\\[bdsw]/i.test(p)) { // Don't muck with named groups. - groups.push(p); - } else { - var start = decodeEscape(p); - var end; - if (i + 2 < n && '-' === charsetParts[i + 1]) { - end = decodeEscape(charsetParts[i + 2]); - i += 2; - } else { - end = start; - } - ranges.push([start, end]); - // If the range might intersect letters, then expand it. - // This case handling is too simplistic. - // It does not deal with non-latin case folding. - // It works for latin source code identifiers though. - if (!(end < 65 || start > 122)) { - if (!(end < 65 || start > 90)) { - ranges.push([Math.max(65, start) | 32, Math.min(end, 90) | 32]); - } - if (!(end < 97 || start > 122)) { - ranges.push([Math.max(97, start) & ~32, Math.min(end, 122) & ~32]); - } - } - } - } - - // [[1, 10], [3, 4], [8, 12], [14, 14], [16, 16], [17, 17]] - // -> [[1, 12], [14, 14], [16, 17]] - ranges.sort(function (a, b) { return (a[0] - b[0]) || (b[1] - a[1]); }); - var consolidatedRanges = []; - var lastRange = [NaN, NaN]; - for (i = 0; i < ranges.length; ++i) { - var range = ranges[i]; - if (range[0] <= lastRange[1] + 1) { - lastRange[1] = Math.max(lastRange[1], range[1]); - } else { - consolidatedRanges.push(lastRange = range); - } - } - - var out = ['[']; - if (inverse) { out.push('^'); } - out.push.apply(out, groups); - for (i = 0; i < consolidatedRanges.length; ++i) { - range = consolidatedRanges[i]; - out.push(encodeEscape(range[0])); - if (range[1] > range[0]) { - if (range[1] + 1 > range[0]) { out.push('-'); } - out.push(encodeEscape(range[1])); - } - } - out.push(']'); - return out.join(''); - } - - function allowAnywhereFoldCaseAndRenumberGroups(regex) { - // Split into character sets, escape sequences, punctuation strings - // like ('(', '(?:', ')', '^'), and runs of characters that do not - // include any of the above. - var parts = regex.source.match( - new RegExp( - '(?:' - + '\\[(?:[^\\x5C\\x5D]|\\\\[\\s\\S])*\\]' // a character set - + '|\\\\u[A-Fa-f0-9]{4}' // a unicode escape - + '|\\\\x[A-Fa-f0-9]{2}' // a hex escape - + '|\\\\[0-9]+' // a back-reference or octal escape - + '|\\\\[^ux0-9]' // other escape sequence - + '|\\(\\?[:!=]' // start of a non-capturing group - + '|[\\(\\)\\^]' // start/emd of a group, or line start - + '|[^\\x5B\\x5C\\(\\)\\^]+' // run of other characters - + ')', - 'g')); - var n = parts.length; - - // Maps captured group numbers to the number they will occupy in - // the output or to -1 if that has not been determined, or to - // undefined if they need not be capturing in the output. - var capturedGroups = []; - - // Walk over and identify back references to build the capturedGroups - // mapping. - for (var i = 0, groupIndex = 0; i < n; ++i) { - var p = parts[i]; - if (p === '(') { - // groups are 1-indexed, so max group index is count of '(' - ++groupIndex; - } else if ('\\' === p.charAt(0)) { - var decimalValue = +p.substring(1); - if (decimalValue && decimalValue <= groupIndex) { - capturedGroups[decimalValue] = -1; - } - } - } - - // Renumber groups and reduce capturing groups to non-capturing groups - // where possible. - for (i = 1; i < capturedGroups.length; ++i) { - if (-1 === capturedGroups[i]) { - capturedGroups[i] = ++capturedGroupIndex; - } - } - for (i = 0, groupIndex = 0; i < n; ++i) { - p = parts[i]; - if (p === '(') { - ++groupIndex; - if (capturedGroups[groupIndex] === undefined) { - parts[i] = '(?:'; - } - } else if ('\\' === p.charAt(0)) { - decimalValue = +p.substring(1); - if (decimalValue && decimalValue <= groupIndex) { - parts[i] = '\\' + capturedGroups[groupIndex]; - } - } - } - - // Remove any prefix anchors so that the output will match anywhere. - // ^^ really does mean an anchored match though. - for (i = 0, groupIndex = 0; i < n; ++i) { - if ('^' === parts[i] && '^' !== parts[i + 1]) { parts[i] = ''; } - } - - // Expand letters to groups to handle mixing of case-sensitive and - // case-insensitive patterns if necessary. - if (regex.ignoreCase && needToFoldCase) { - for (i = 0; i < n; ++i) { - p = parts[i]; - var ch0 = p.charAt(0); - if (p.length >= 2 && ch0 === '[') { - parts[i] = caseFoldCharset(p); - } else if (ch0 !== '\\') { - // TODO: handle letters in numeric escapes. - parts[i] = p.replace( - /[a-zA-Z]/g, - function (ch) { - var cc = ch.charCodeAt(0); - return '[' + String.fromCharCode(cc & ~32, cc | 32) + ']'; - }); - } - } - } - - return parts.join(''); - } - - var rewritten = []; - for (i = 0, n = regexs.length; i < n; ++i) { - regex = regexs[i]; - if (regex.global || regex.multiline) { throw new Error('' + regex); } - rewritten.push( - '(?:' + allowAnywhereFoldCaseAndRenumberGroups(regex) + ')'); - } - - return new RegExp(rewritten.join('|'), ignoreCase ? 'gi' : 'g'); - } - - - /** - * Split markup into a string of source code and an array mapping ranges in - * that string to the text nodes in which they appear. - * - * <p> - * The HTML DOM structure:</p> - * <pre> - * (Element "p" - * (Element "b" - * (Text "print ")) ; #1 - * (Text "'Hello '") ; #2 - * (Element "br") ; #3 - * (Text " + 'World';")) ; #4 - * </pre> - * <p> - * corresponds to the HTML - * {@code <p><b>print </b>'Hello '<br> + 'World';</p>}.</p> - * - * <p> - * It will produce the output:</p> - * <pre> - * { - * sourceCode: "print 'Hello '\n + 'World';", - * // 1 2 - * // 012345678901234 5678901234567 - * spans: [0, #1, 6, #2, 14, #3, 15, #4] - * } - * </pre> - * <p> - * where #1 is a reference to the {@code "print "} text node above, and so - * on for the other text nodes. - * </p> - * - * <p> - * The {@code} spans array is an array of pairs. Even elements are the start - * indices of substrings, and odd elements are the text nodes (or BR elements) - * that contain the text for those substrings. - * Substrings continue until the next index or the end of the source. - * </p> - * - * @param {Node} node an HTML DOM subtree containing source-code. - * @return {Object} source code and the text nodes in which they occur. - */ - function extractSourceSpans(node) { - var nocode = /(?:^|\s)nocode(?:\s|$)/; - - var chunks = []; - var length = 0; - var spans = []; - var k = 0; - - var whitespace; - if (node.currentStyle) { - whitespace = node.currentStyle.whiteSpace; - } else if (window.getComputedStyle) { - whitespace = document.defaultView.getComputedStyle(node, null) - .getPropertyValue('white-space'); - } - var isPreformatted = whitespace && 'pre' === whitespace.substring(0, 3); - - function walk(node) { - switch (node.nodeType) { - case 1: // Element - if (nocode.test(node.className)) { return; } - for (var child = node.firstChild; child; child = child.nextSibling) { - walk(child); - } - var nodeName = node.nodeName; - if ('BR' === nodeName || 'LI' === nodeName) { - chunks[k] = '\n'; - spans[k << 1] = length++; - spans[(k++ << 1) | 1] = node; - } - break; - case 3: case 4: // Text - var text = node.nodeValue; - if (text.length) { - if (!isPreformatted) { - text = text.replace(/[ \t\r\n]+/g, ' '); - } else { - text = text.replace(/\r\n?/g, '\n'); // Normalize newlines. - } - // TODO: handle tabs here? - chunks[k] = text; - spans[k << 1] = length; - length += text.length; - spans[(k++ << 1) | 1] = node; - } - break; - } - } - - walk(node); - - return { - sourceCode: chunks.join('').replace(/\n$/, ''), - spans: spans - }; - } - - - /** - * Apply the given language handler to sourceCode and add the resulting - * decorations to out. - * @param {number} basePos the index of sourceCode within the chunk of source - * whose decorations are already present on out. - */ - function appendDecorations(basePos, sourceCode, langHandler, out) { - if (!sourceCode) { return; } - var job = { - sourceCode: sourceCode, - basePos: basePos - }; - langHandler(job); - out.push.apply(out, job.decorations); - } - - var notWs = /\S/; - - /** - * Given an element, if it contains only one child element and any text nodes - * it contains contain only space characters, return the sole child element. - * Otherwise returns undefined. - * <p> - * This is meant to return the CODE element in {@code <pre><code ...>} when - * there is a single child element that contains all the non-space textual - * content, but not to return anything where there are multiple child elements - * as in {@code <pre><code>...</code><code>...</code></pre>} or when there - * is textual content. - */ - function childContentWrapper(element) { - var wrapper = undefined; - for (var c = element.firstChild; c; c = c.nextSibling) { - var type = c.nodeType; - if (type === 1) { - wrapper = wrapper ? element : c; - } else if (type === 3) { - wrapper = notWs.test(c.nodeValue) ? element : wrapper; - } - } - return wrapper === element ? undefined : wrapper; - } - - /** Given triples of [style, pattern, context] returns a lexing function, - * The lexing function interprets the patterns to find token boundaries and - * returns a decoration list of the form - * [index_0, style_0, index_1, style_1, ..., index_n, style_n] - * where index_n is an index into the sourceCode, and style_n is a style - * constant like PR_PLAIN. index_n-1 <= index_n, and style_n-1 applies to - * all characters in sourceCode[index_n-1:index_n]. - * - * The stylePatterns is a list whose elements have the form - * [style : string, pattern : RegExp, DEPRECATED, shortcut : string]. - * - * Style is a style constant like PR_PLAIN, or can be a string of the - * form 'lang-FOO', where FOO is a language extension describing the - * language of the portion of the token in $1 after pattern executes. - * E.g., if style is 'lang-lisp', and group 1 contains the text - * '(hello (world))', then that portion of the token will be passed to the - * registered lisp handler for formatting. - * The text before and after group 1 will be restyled using this decorator - * so decorators should take care that this doesn't result in infinite - * recursion. For example, the HTML lexer rule for SCRIPT elements looks - * something like ['lang-js', /<[s]cript>(.+?)<\/script>/]. This may match - * '<script>foo()<\/script>', which would cause the current decorator to - * be called with '<script>' which would not match the same rule since - * group 1 must not be empty, so it would be instead styled as PR_TAG by - * the generic tag rule. The handler registered for the 'js' extension would - * then be called with 'foo()', and finally, the current decorator would - * be called with '<\/script>' which would not match the original rule and - * so the generic tag rule would identify it as a tag. - * - * Pattern must only match prefixes, and if it matches a prefix, then that - * match is considered a token with the same style. - * - * Context is applied to the last non-whitespace, non-comment token - * recognized. - * - * Shortcut is an optional string of characters, any of which, if the first - * character, gurantee that this pattern and only this pattern matches. - * - * @param {Array} shortcutStylePatterns patterns that always start with - * a known character. Must have a shortcut string. - * @param {Array} fallthroughStylePatterns patterns that will be tried in - * order if the shortcut ones fail. May have shortcuts. - * - * @return {function (Object)} a - * function that takes source code and returns a list of decorations. - */ - function createSimpleLexer(shortcutStylePatterns, fallthroughStylePatterns) { - var shortcuts = {}; - var tokenizer; - (function () { - var allPatterns = shortcutStylePatterns.concat(fallthroughStylePatterns); - var allRegexs = []; - var regexKeys = {}; - for (var i = 0, n = allPatterns.length; i < n; ++i) { - var patternParts = allPatterns[i]; - var shortcutChars = patternParts[3]; - if (shortcutChars) { - for (var c = shortcutChars.length; --c >= 0;) { - shortcuts[shortcutChars.charAt(c)] = patternParts; - } - } - var regex = patternParts[1]; - var k = '' + regex; - if (!regexKeys.hasOwnProperty(k)) { - allRegexs.push(regex); - regexKeys[k] = null; - } - } - allRegexs.push(/[\0-\uffff]/); - tokenizer = combinePrefixPatterns(allRegexs); - })(); - - var nPatterns = fallthroughStylePatterns.length; - - /** - * Lexes job.sourceCode and produces an output array job.decorations of - * style classes preceded by the position at which they start in - * job.sourceCode in order. - * - * @param {Object} job an object like <pre>{ - * sourceCode: {string} sourceText plain text, - * basePos: {int} position of job.sourceCode in the larger chunk of - * sourceCode. - * }</pre> - */ - var decorate = function (job) { - var sourceCode = job.sourceCode, basePos = job.basePos; - /** Even entries are positions in source in ascending order. Odd enties - * are style markers (e.g., PR_COMMENT) that run from that position until - * the end. - * @type {Array.<number|string>} - */ - var decorations = [basePos, PR_PLAIN]; - var pos = 0; // index into sourceCode - var tokens = sourceCode.match(tokenizer) || []; - var styleCache = {}; - - for (var ti = 0, nTokens = tokens.length; ti < nTokens; ++ti) { - var token = tokens[ti]; - var style = styleCache[token]; - var match = void 0; - - var isEmbedded; - if (typeof style === 'string') { - isEmbedded = false; - } else { - var patternParts = shortcuts[token.charAt(0)]; - if (patternParts) { - match = token.match(patternParts[1]); - style = patternParts[0]; - } else { - for (var i = 0; i < nPatterns; ++i) { - patternParts = fallthroughStylePatterns[i]; - match = token.match(patternParts[1]); - if (match) { - style = patternParts[0]; - break; - } - } - - if (!match) { // make sure that we make progress - style = PR_PLAIN; - } - } - - isEmbedded = style.length >= 5 && 'lang-' === style.substring(0, 5); - if (isEmbedded && !(match && typeof match[1] === 'string')) { - isEmbedded = false; - style = PR_SOURCE; - } - - if (!isEmbedded) { styleCache[token] = style; } - } - - var tokenStart = pos; - pos += token.length; - - if (!isEmbedded) { - decorations.push(basePos + tokenStart, style); - } else { // Treat group 1 as an embedded block of source code. - var embeddedSource = match[1]; - var embeddedSourceStart = token.indexOf(embeddedSource); - var embeddedSourceEnd = embeddedSourceStart + embeddedSource.length; - if (match[2]) { - // If embeddedSource can be blank, then it would match at the - // beginning which would cause us to infinitely recurse on the - // entire token, so we catch the right context in match[2]. - embeddedSourceEnd = token.length - match[2].length; - embeddedSourceStart = embeddedSourceEnd - embeddedSource.length; - } - var lang = style.substring(5); - // Decorate the left of the embedded source - appendDecorations( - basePos + tokenStart, - token.substring(0, embeddedSourceStart), - decorate, decorations); - // Decorate the embedded source - appendDecorations( - basePos + tokenStart + embeddedSourceStart, - embeddedSource, - langHandlerForExtension(lang, embeddedSource), - decorations); - // Decorate the right of the embedded section - appendDecorations( - basePos + tokenStart + embeddedSourceEnd, - token.substring(embeddedSourceEnd), - decorate, decorations); - } - } - job.decorations = decorations; - }; - return decorate; - } - - /** returns a function that produces a list of decorations from source text. - * - * This code treats ", ', and ` as string delimiters, and \ as a string - * escape. It does not recognize perl's qq() style strings. - * It has no special handling for double delimiter escapes as in basic, or - * the tripled delimiters used in python, but should work on those regardless - * although in those cases a single string literal may be broken up into - * multiple adjacent string literals. - * - * It recognizes C, C++, and shell style comments. - * - * @param {Object} options a set of optional parameters. - * @return {function (Object)} a function that examines the source code - * in the input job and builds the decoration list. - */ - function sourceDecorator(options) { - var shortcutStylePatterns = [], fallthroughStylePatterns = []; - if (options['tripleQuotedStrings']) { - // '''multi-line-string''', 'single-line-string', and double-quoted - shortcutStylePatterns.push( - [PR_STRING, /^(?:\'\'\'(?:[^\'\\]|\\[\s\S]|\'{1,2}(?=[^\']))*(?:\'\'\'|$)|\"\"\"(?:[^\"\\]|\\[\s\S]|\"{1,2}(?=[^\"]))*(?:\"\"\"|$)|\'(?:[^\\\']|\\[\s\S])*(?:\'|$)|\"(?:[^\\\"]|\\[\s\S])*(?:\"|$))/, - null, '\'"']); - } else if (options['multiLineStrings']) { - // 'multi-line-string', "multi-line-string" - shortcutStylePatterns.push( - [PR_STRING, /^(?:\'(?:[^\\\']|\\[\s\S])*(?:\'|$)|\"(?:[^\\\"]|\\[\s\S])*(?:\"|$)|\`(?:[^\\\`]|\\[\s\S])*(?:\`|$))/, - null, '\'"`']); - } else { - // 'single-line-string', "single-line-string" - shortcutStylePatterns.push( - [PR_STRING, - /^(?:\'(?:[^\\\'\r\n]|\\.)*(?:\'|$)|\"(?:[^\\\"\r\n]|\\.)*(?:\"|$))/, - null, '"\'']); - } - if (options['verbatimStrings']) { - // verbatim-string-literal production from the C# grammar. See issue 93. - fallthroughStylePatterns.push( - [PR_STRING, /^@\"(?:[^\"]|\"\")*(?:\"|$)/, null]); - } - var hc = options['hashComments']; - if (hc) { - if (options['cStyleComments']) { - if (hc > 1) { // multiline hash comments - shortcutStylePatterns.push( - [PR_COMMENT, /^#(?:##(?:[^#]|#(?!##))*(?:###|$)|.*)/, null, '#']); - } else { - // Stop C preprocessor declarations at an unclosed open comment - shortcutStylePatterns.push( - [PR_COMMENT, /^#(?:(?:define|elif|else|endif|error|ifdef|include|ifndef|line|pragma|undef|warning)\b|[^\r\n]*)/, - null, '#']); - } - fallthroughStylePatterns.push( - [PR_STRING, - /^<(?:(?:(?:\.\.\/)*|\/?)(?:[\w-]+(?:\/[\w-]+)+)?[\w-]+\.h|[a-z]\w*)>/, - null]); - } else { - shortcutStylePatterns.push([PR_COMMENT, /^#[^\r\n]*/, null, '#']); - } - } - if (options['cStyleComments']) { - fallthroughStylePatterns.push([PR_COMMENT, /^\/\/[^\r\n]*/, null]); - fallthroughStylePatterns.push( - [PR_COMMENT, /^\/\*[\s\S]*?(?:\*\/|$)/, null]); - } - if (options['regexLiterals']) { - /** - * @const - */ - var REGEX_LITERAL = ( - // A regular expression literal starts with a slash that is - // not followed by * or / so that it is not confused with - // comments. - '/(?=[^/*])' - // and then contains any number of raw characters, - + '(?:[^/\\x5B\\x5C]' - // escape sequences (\x5C), - + '|\\x5C[\\s\\S]' - // or non-nesting character sets (\x5B\x5D); - + '|\\x5B(?:[^\\x5C\\x5D]|\\x5C[\\s\\S])*(?:\\x5D|$))+' - // finally closed by a /. - + '/'); - fallthroughStylePatterns.push( - ['lang-regex', - new RegExp('^' + REGEXP_PRECEDER_PATTERN + '(' + REGEX_LITERAL + ')') - ]); - } - - var types = options['types']; - if (types) { - fallthroughStylePatterns.push([PR_TYPE, types]); - } - - var keywords = ("" + options['keywords']).replace(/^ | $/g, ''); - if (keywords.length) { - fallthroughStylePatterns.push( - [PR_KEYWORD, - new RegExp('^(?:' + keywords.replace(/[\s,]+/g, '|') + ')\\b'), - null]); - } - - shortcutStylePatterns.push([PR_PLAIN, /^\s+/, null, ' \r\n\t\xA0']); - fallthroughStylePatterns.push( - // TODO(mikesamuel): recognize non-latin letters and numerals in idents - [PR_LITERAL, /^@[a-z_$][a-z_$@0-9]*/i, null], - [PR_TYPE, /^(?:[@_]?[A-Z]+[a-z][A-Za-z_$@0-9]*|\w+_t\b)/, null], - [PR_PLAIN, /^[a-z_$][a-z_$@0-9]*/i, null], - [PR_LITERAL, - new RegExp( - '^(?:' - // A hex number - + '0x[a-f0-9]+' - // or an octal or decimal number, - + '|(?:\\d(?:_\\d+)*\\d*(?:\\.\\d*)?|\\.\\d\\+)' - // possibly in scientific notation - + '(?:e[+\\-]?\\d+)?' - + ')' - // with an optional modifier like UL for unsigned long - + '[a-z]*', 'i'), - null, '0123456789'], - // Don't treat escaped quotes in bash as starting strings. See issue 144. - [PR_PLAIN, /^\\[\s\S]?/, null], - [PR_PUNCTUATION, /^.[^\s\w\.$@\'\"\`\/\#\\]*/, null]); - - return createSimpleLexer(shortcutStylePatterns, fallthroughStylePatterns); - } - - var decorateSource = sourceDecorator({ - 'keywords': ALL_KEYWORDS, - 'hashComments': true, - 'cStyleComments': true, - 'multiLineStrings': true, - 'regexLiterals': true - }); - - /** - * Given a DOM subtree, wraps it in a list, and puts each line into its own - * list item. - * - * @param {Node} node modified in place. Its content is pulled into an - * HTMLOListElement, and each line is moved into a separate list item. - * This requires cloning elements, so the input might not have unique - * IDs after numbering. - */ - function numberLines(node, opt_startLineNum) { - var nocode = /(?:^|\s)nocode(?:\s|$)/; - var lineBreak = /\r\n?|\n/; - - var document = node.ownerDocument; - - var whitespace; - if (node.currentStyle) { - whitespace = node.currentStyle.whiteSpace; - } else if (window.getComputedStyle) { - whitespace = document.defaultView.getComputedStyle(node, null) - .getPropertyValue('white-space'); - } - // If it's preformatted, then we need to split lines on line breaks - // in addition to <BR>s. - var isPreformatted = whitespace && 'pre' === whitespace.substring(0, 3); - - var li = document.createElement('LI'); - while (node.firstChild) { - li.appendChild(node.firstChild); - } - // An array of lines. We split below, so this is initialized to one - // un-split line. - var listItems = [li]; - - function walk(node) { - switch (node.nodeType) { - case 1: // Element - if (nocode.test(node.className)) { break; } - if ('BR' === node.nodeName) { - breakAfter(node); - // Discard the <BR> since it is now flush against a </LI>. - if (node.parentNode) { - node.parentNode.removeChild(node); - } - } else { - for (var child = node.firstChild; child; child = child.nextSibling) { - walk(child); - } - } - break; - case 3: case 4: // Text - if (isPreformatted) { - var text = node.nodeValue; - var match = text.match(lineBreak); - if (match) { - var firstLine = text.substring(0, match.index); - node.nodeValue = firstLine; - var tail = text.substring(match.index + match[0].length); - if (tail) { - var parent = node.parentNode; - parent.insertBefore( - document.createTextNode(tail), node.nextSibling); - } - breakAfter(node); - if (!firstLine) { - // Don't leave blank text nodes in the DOM. - node.parentNode.removeChild(node); - } - } - } - break; - } - } - - // Split a line after the given node. - function breakAfter(lineEndNode) { - // If there's nothing to the right, then we can skip ending the line - // here, and move root-wards since splitting just before an end-tag - // would require us to create a bunch of empty copies. - while (!lineEndNode.nextSibling) { - lineEndNode = lineEndNode.parentNode; - if (!lineEndNode) { return; } - } - - function breakLeftOf(limit, copy) { - // Clone shallowly if this node needs to be on both sides of the break. - var rightSide = copy ? limit.cloneNode(false) : limit; - var parent = limit.parentNode; - if (parent) { - // We clone the parent chain. - // This helps us resurrect important styling elements that cross lines. - // E.g. in <i>Foo<br>Bar</i> - // should be rewritten to <li><i>Foo</i></li><li><i>Bar</i></li>. - var parentClone = breakLeftOf(parent, 1); - // Move the clone and everything to the right of the original - // onto the cloned parent. - var next = limit.nextSibling; - parentClone.appendChild(rightSide); - for (var sibling = next; sibling; sibling = next) { - next = sibling.nextSibling; - parentClone.appendChild(sibling); - } - } - return rightSide; - } - - var copiedListItem = breakLeftOf(lineEndNode.nextSibling, 0); - - // Walk the parent chain until we reach an unattached LI. - for (var parent; - // Check nodeType since IE invents document fragments. - (parent = copiedListItem.parentNode) && parent.nodeType === 1;) { - copiedListItem = parent; - } - // Put it on the list of lines for later processing. - listItems.push(copiedListItem); - } - - // Split lines while there are lines left to split. - for (var i = 0; // Number of lines that have been split so far. - i < listItems.length; // length updated by breakAfter calls. - ++i) { - walk(listItems[i]); - } - - // Make sure numeric indices show correctly. - if (opt_startLineNum === (opt_startLineNum|0)) { - listItems[0].setAttribute('value', opt_startLineNum); - } - - var ol = document.createElement('OL'); - ol.className = 'linenums'; - var offset = Math.max(0, ((opt_startLineNum - 1 /* zero index */)) | 0) || 0; - for (i = 0, n = listItems.length; i < n; ++i) { - li = listItems[i]; - // Stick a class on the LIs so that stylesheets can - // color odd/even rows, or any other row pattern that - // is co-prime with 10. - li.className = 'L' + ((i + offset) % 10); - if (!li.firstChild) { - li.appendChild(document.createTextNode('\xA0')); - } - ol.appendChild(li); - } - - node.appendChild(ol); - } - - /** - * Breaks {@code job.sourceCode} around style boundaries in - * {@code job.decorations} and modifies {@code job.sourceNode} in place. - * @param {Object} job like <pre>{ - * sourceCode: {string} source as plain text, - * spans: {Array.<number|Node>} alternating span start indices into source - * and the text node or element (e.g. {@code <BR>}) corresponding to that - * span. - * decorations: {Array.<number|string} an array of style classes preceded - * by the position at which they start in job.sourceCode in order - * }</pre> - * @private - */ - function recombineTagsAndDecorations(job) { - var isIE = /\bMSIE\b/.test(navigator.userAgent); - var newlineRe = /\n/g; - - var source = job.sourceCode; - var sourceLength = source.length; - // Index into source after the last code-unit recombined. - var sourceIndex = 0; - - var spans = job.spans; - var nSpans = spans.length; - // Index into spans after the last span which ends at or before sourceIndex. - var spanIndex = 0; - - var decorations = job.decorations; - var nDecorations = decorations.length; - // Index into decorations after the last decoration which ends at or before - // sourceIndex. - var decorationIndex = 0; - - // Remove all zero-length decorations. - decorations[nDecorations] = sourceLength; - var decPos, i; - for (i = decPos = 0; i < nDecorations;) { - if (decorations[i] !== decorations[i + 2]) { - decorations[decPos++] = decorations[i++]; - decorations[decPos++] = decorations[i++]; - } else { - i += 2; - } - } - nDecorations = decPos; - - // Simplify decorations. - for (i = decPos = 0; i < nDecorations;) { - var startPos = decorations[i]; - // Conflate all adjacent decorations that use the same style. - var startDec = decorations[i + 1]; - var end = i + 2; - while (end + 2 <= nDecorations && decorations[end + 1] === startDec) { - end += 2; - } - decorations[decPos++] = startPos; - decorations[decPos++] = startDec; - i = end; - } - - nDecorations = decorations.length = decPos; - - var decoration = null; - while (spanIndex < nSpans) { - var spanStart = spans[spanIndex]; - var spanEnd = spans[spanIndex + 2] || sourceLength; - - var decStart = decorations[decorationIndex]; - var decEnd = decorations[decorationIndex + 2] || sourceLength; - - end = Math.min(spanEnd, decEnd); - - var textNode = spans[spanIndex + 1]; - var styledText; - if (textNode.nodeType !== 1 // Don't muck with <BR>s or <LI>s - // Don't introduce spans around empty text nodes. - && (styledText = source.substring(sourceIndex, end))) { - // This may seem bizarre, and it is. Emitting LF on IE causes the - // code to display with spaces instead of line breaks. - // Emitting Windows standard issue linebreaks (CRLF) causes a blank - // space to appear at the beginning of every line but the first. - // Emitting an old Mac OS 9 line separator makes everything spiffy. - if (isIE) { styledText = styledText.replace(newlineRe, '\r'); } - textNode.nodeValue = styledText; - var document = textNode.ownerDocument; - var span = document.createElement('SPAN'); - span.className = decorations[decorationIndex + 1]; - var parentNode = textNode.parentNode; - parentNode.replaceChild(span, textNode); - span.appendChild(textNode); - if (sourceIndex < spanEnd) { // Split off a text node. - spans[spanIndex + 1] = textNode - // TODO: Possibly optimize by using '' if there's no flicker. - = document.createTextNode(source.substring(end, spanEnd)); - parentNode.insertBefore(textNode, span.nextSibling); - } - } - - sourceIndex = end; - - if (sourceIndex >= spanEnd) { - spanIndex += 2; - } - if (sourceIndex >= decEnd) { - decorationIndex += 2; - } - } - } - - - /** Maps language-specific file extensions to handlers. */ - var langHandlerRegistry = {}; - /** Register a language handler for the given file extensions. - * @param {function (Object)} handler a function from source code to a list - * of decorations. Takes a single argument job which describes the - * state of the computation. The single parameter has the form - * {@code { - * sourceCode: {string} as plain text. - * decorations: {Array.<number|string>} an array of style classes - * preceded by the position at which they start in - * job.sourceCode in order. - * The language handler should assigned this field. - * basePos: {int} the position of source in the larger source chunk. - * All positions in the output decorations array are relative - * to the larger source chunk. - * } } - * @param {Array.<string>} fileExtensions - */ - function registerLangHandler(handler, fileExtensions) { - for (var i = fileExtensions.length; --i >= 0;) { - var ext = fileExtensions[i]; - if (!langHandlerRegistry.hasOwnProperty(ext)) { - langHandlerRegistry[ext] = handler; - } else if (window['console']) { - console['warn']('cannot override language handler %s', ext); - } - } - } - function langHandlerForExtension(extension, source) { - if (!(extension && langHandlerRegistry.hasOwnProperty(extension))) { - // Treat it as markup if the first non whitespace character is a < and - // the last non-whitespace character is a >. - extension = /^\s*</.test(source) - ? 'default-markup' - : 'default-code'; - } - return langHandlerRegistry[extension]; - } - registerLangHandler(decorateSource, ['default-code']); - registerLangHandler( - createSimpleLexer( - [], - [ - [PR_PLAIN, /^[^<?]+/], - [PR_DECLARATION, /^<!\w[^>]*(?:>|$)/], - [PR_COMMENT, /^<\!--[\s\S]*?(?:-\->|$)/], - // Unescaped content in an unknown language - ['lang-', /^<\?([\s\S]+?)(?:\?>|$)/], - ['lang-', /^<%([\s\S]+?)(?:%>|$)/], - [PR_PUNCTUATION, /^(?:<[%?]|[%?]>)/], - ['lang-', /^<xmp\b[^>]*>([\s\S]+?)<\/xmp\b[^>]*>/i], - // Unescaped content in javascript. (Or possibly vbscript). - ['lang-js', /^<script\b[^>]*>([\s\S]*?)(<\/script\b[^>]*>)/i], - // Contains unescaped stylesheet content - ['lang-css', /^<style\b[^>]*>([\s\S]*?)(<\/style\b[^>]*>)/i], - ['lang-in.tag', /^(<\/?[a-z][^<>]*>)/i] - ]), - ['default-markup', 'htm', 'html', 'mxml', 'xhtml', 'xml', 'xsl']); - registerLangHandler( - createSimpleLexer( - [ - [PR_PLAIN, /^[\s]+/, null, ' \t\r\n'], - [PR_ATTRIB_VALUE, /^(?:\"[^\"]*\"?|\'[^\']*\'?)/, null, '\"\''] - ], - [ - [PR_TAG, /^^<\/?[a-z](?:[\w.:-]*\w)?|\/?>$/i], - [PR_ATTRIB_NAME, /^(?!style[\s=]|on)[a-z](?:[\w:-]*\w)?/i], - ['lang-uq.val', /^=\s*([^>\'\"\s]*(?:[^>\'\"\s\/]|\/(?=\s)))/], - [PR_PUNCTUATION, /^[=<>\/]+/], - ['lang-js', /^on\w+\s*=\s*\"([^\"]+)\"/i], - ['lang-js', /^on\w+\s*=\s*\'([^\']+)\'/i], - ['lang-js', /^on\w+\s*=\s*([^\"\'>\s]+)/i], - ['lang-css', /^style\s*=\s*\"([^\"]+)\"/i], - ['lang-css', /^style\s*=\s*\'([^\']+)\'/i], - ['lang-css', /^style\s*=\s*([^\"\'>\s]+)/i] - ]), - ['in.tag']); - registerLangHandler( - createSimpleLexer([], [[PR_ATTRIB_VALUE, /^[\s\S]+/]]), ['uq.val']); - registerLangHandler(sourceDecorator({ - 'keywords': CPP_KEYWORDS, - 'hashComments': true, - 'cStyleComments': true, - 'types': C_TYPES - }), ['c', 'cc', 'cpp', 'cxx', 'cyc', 'm']); - registerLangHandler(sourceDecorator({ - 'keywords': 'null,true,false' - }), ['json']); - registerLangHandler(sourceDecorator({ - 'keywords': CSHARP_KEYWORDS, - 'hashComments': true, - 'cStyleComments': true, - 'verbatimStrings': true, - 'types': C_TYPES - }), ['cs']); - registerLangHandler(sourceDecorator({ - 'keywords': JAVA_KEYWORDS, - 'cStyleComments': true - }), ['java']); - registerLangHandler(sourceDecorator({ - 'keywords': SH_KEYWORDS, - 'hashComments': true, - 'multiLineStrings': true - }), ['bsh', 'csh', 'sh']); - registerLangHandler(sourceDecorator({ - 'keywords': PYTHON_KEYWORDS, - 'hashComments': true, - 'multiLineStrings': true, - 'tripleQuotedStrings': true - }), ['cv', 'py']); - registerLangHandler(sourceDecorator({ - 'keywords': PERL_KEYWORDS, - 'hashComments': true, - 'multiLineStrings': true, - 'regexLiterals': true - }), ['perl', 'pl', 'pm']); - registerLangHandler(sourceDecorator({ - 'keywords': RUBY_KEYWORDS, - 'hashComments': true, - 'multiLineStrings': true, - 'regexLiterals': true - }), ['rb']); - registerLangHandler(sourceDecorator({ - 'keywords': JSCRIPT_KEYWORDS, - 'cStyleComments': true, - 'regexLiterals': true - }), ['js']); - registerLangHandler(sourceDecorator({ - 'keywords': COFFEE_KEYWORDS, - 'hashComments': 3, // ### style block comments - 'cStyleComments': true, - 'multilineStrings': true, - 'tripleQuotedStrings': true, - 'regexLiterals': true - }), ['coffee']); - registerLangHandler(createSimpleLexer([], [[PR_STRING, /^[\s\S]+/]]), ['regex']); - - function applyDecorator(job) { - var opt_langExtension = job.langExtension; - - try { - // Extract tags, and convert the source code to plain text. - var sourceAndSpans = extractSourceSpans(job.sourceNode); - /** Plain text. @type {string} */ - var source = sourceAndSpans.sourceCode; - job.sourceCode = source; - job.spans = sourceAndSpans.spans; - job.basePos = 0; - - // Apply the appropriate language handler - langHandlerForExtension(opt_langExtension, source)(job); - - // Integrate the decorations and tags back into the source code, - // modifying the sourceNode in place. - recombineTagsAndDecorations(job); - } catch (e) { - if ('console' in window) { - console['log'](e && e['stack'] ? e['stack'] : e); - } - } - } - - /** - * @param sourceCodeHtml {string} The HTML to pretty print. - * @param opt_langExtension {string} The language name to use. - * Typically, a filename extension like 'cpp' or 'java'. - * @param opt_numberLines {number|boolean} True to number lines, - * or the 1-indexed number of the first line in sourceCodeHtml. - */ - function prettyPrintOne(sourceCodeHtml, opt_langExtension, opt_numberLines) { - var container = document.createElement('PRE'); - // This could cause images to load and onload listeners to fire. - // E.g. <img onerror="alert(1337)" src="nosuchimage.png">. - // We assume that the inner HTML is from a trusted source. - container.innerHTML = sourceCodeHtml; - if (opt_numberLines) { - numberLines(container, opt_numberLines); - } - - var job = { - langExtension: opt_langExtension, - numberLines: opt_numberLines, - sourceNode: container - }; - applyDecorator(job); - return container.innerHTML; - } - - function prettyPrint(opt_whenDone) { - function byTagName(tn) { return document.getElementsByTagName(tn); } - // fetch a list of nodes to rewrite - var codeSegments = [byTagName('pre'), byTagName('code'), byTagName('xmp')]; - var elements = []; - for (var i = 0; i < codeSegments.length; ++i) { - for (var j = 0, n = codeSegments[i].length; j < n; ++j) { - elements.push(codeSegments[i][j]); - } - } - codeSegments = null; - - var clock = Date; - if (!clock['now']) { - clock = { 'now': function () { return +(new Date); } }; - } - - // The loop is broken into a series of continuations to make sure that we - // don't make the browser unresponsive when rewriting a large page. - var k = 0; - var prettyPrintingJob; - - var langExtensionRe = /\blang(?:uage)?-([\w.]+)(?!\S)/; - var prettyPrintRe = /\bprettyprint\b/; - - function doWork() { - var endTime = (window['PR_SHOULD_USE_CONTINUATION'] ? - clock['now']() + 250 /* ms */ : - Infinity); - for (; k < elements.length && clock['now']() < endTime; k++) { - var cs = elements[k]; - var className = cs.className; - if (className.indexOf('prettyprint') >= 0) { - // If the classes includes a language extensions, use it. - // Language extensions can be specified like - // <pre class="prettyprint lang-cpp"> - // the language extension "cpp" is used to find a language handler as - // passed to PR.registerLangHandler. - // HTML5 recommends that a language be specified using "language-" - // as the prefix instead. Google Code Prettify supports both. - // http://dev.w3.org/html5/spec-author-view/the-code-element.html - var langExtension = className.match(langExtensionRe); - // Support <pre class="prettyprint"><code class="language-c"> - var wrapper; - if (!langExtension && (wrapper = childContentWrapper(cs)) - && "CODE" === wrapper.tagName) { - langExtension = wrapper.className.match(langExtensionRe); - } - - if (langExtension) { - langExtension = langExtension[1]; - } - - // make sure this is not nested in an already prettified element - var nested = false; - for (var p = cs.parentNode; p; p = p.parentNode) { - if ((p.tagName === 'pre' || p.tagName === 'code' || - p.tagName === 'xmp') && - p.className && p.className.indexOf('prettyprint') >= 0) { - nested = true; - break; - } - } - if (!nested) { - // Look for a class like linenums or linenums:<n> where <n> is the - // 1-indexed number of the first line. - var lineNums = cs.className.match(/\blinenums\b(?::(\d+))?/); - if (lineNums) { - lineNums = lineNums[1] && lineNums[1].length ? +lineNums[1] : true; - } else { - lineNums = false; - } - if (lineNums) { numberLines(cs, lineNums); } - - // do the pretty printing - prettyPrintingJob = { - langExtension: langExtension, - sourceNode: cs, - numberLines: lineNums - }; - applyDecorator(prettyPrintingJob); - } - } - } - if (k < elements.length) { - // finish up in a continuation - setTimeout(doWork, 250); - } else if (opt_whenDone) { - opt_whenDone(); - } - } - - doWork(); - } - - /** - * Find all the {@code <pre>} and {@code <code>} tags in the DOM with - * {@code class=prettyprint} and prettify them. - * - * @param {Function?} opt_whenDone if specified, called when the last entry - * has been finished. - */ - window['prettyPrintOne'] = prettyPrintOne; - /** - * Pretty print a chunk of code. - * - * @param {string} sourceCodeHtml code as html - * @return {string} code as html, but prettier - */ - window['prettyPrint'] = prettyPrint; - /** - * Contains functions for creating and registering new language handlers. - * @type {Object} - */ - window['PR'] = { - 'createSimpleLexer': createSimpleLexer, - 'registerLangHandler': registerLangHandler, - 'sourceDecorator': sourceDecorator, - 'PR_ATTRIB_NAME': PR_ATTRIB_NAME, - 'PR_ATTRIB_VALUE': PR_ATTRIB_VALUE, - 'PR_COMMENT': PR_COMMENT, - 'PR_DECLARATION': PR_DECLARATION, - 'PR_KEYWORD': PR_KEYWORD, - 'PR_LITERAL': PR_LITERAL, - 'PR_NOCODE': PR_NOCODE, - 'PR_PLAIN': PR_PLAIN, - 'PR_PUNCTUATION': PR_PUNCTUATION, - 'PR_SOURCE': PR_SOURCE, - 'PR_STRING': PR_STRING, - 'PR_TAG': PR_TAG, - 'PR_TYPE': PR_TYPE - }; -})(); |