ref: master
public/javascripts/vendor/strophejs-1.1.3/doc/javascript/prettify.js
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// This code comes from the December 2009 release of Google Prettify, which is Copyright � 2006 Google Inc. // Minor modifications are marked with "ND Change" comments. // As part of Natural Docs, this code is licensed under version 3 of the GNU Affero General Public License (AGPL.) // However, it may also be obtained separately under version 2.0 of the Apache License. // Refer to License.txt for the complete details // Main code // ____________________________________________________________________________ // 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 * @overrides window */ // 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; /** the number of characters between tab columns */ window['PR_TAB_WIDTH'] = 8; /** Walks the DOM returning a properly escaped version of innerHTML. * @param {Node} node * @param {Array.<string>} out output buffer that receives chunks of HTML. */ window['PR_normalizedHtml'] /** Contains functions for creating and registering new language handlers. * @type {Object} */ = window['PR'] /** Pretty print a chunk of code. * * @param {string} sourceCodeHtml code as html * @return {string} code as html, but prettier */ = window['prettyPrintOne'] /** 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['prettyPrint'] = void 0; /** browser detection. @extern @returns false if not IE, otherwise the major version. */ window['_pr_isIE6'] = function () { var ieVersion = navigator && navigator.userAgent && navigator.userAgent.match(/\bMSIE ([678])\./); ieVersion = ieVersion ? +ieVersion[1] : false; window['_pr_isIE6'] = function () { return ieVersion; }; return ieVersion; }; (function () { // Keyword lists for various languages. 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 wchar_t 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 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 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); // token style names. correspond to css classes /** token style for a string literal */ var PR_STRING = 'str'; /** token style for a keyword */ var PR_KEYWORD = 'kwd'; /** token style for a comment */ var PR_COMMENT = 'com'; /** token style for a type */ var PR_TYPE = 'typ'; /** token style for a literal value. e.g. 1, null, true. */ var PR_LITERAL = 'lit'; /** token style for a punctuation string. */ var PR_PUNCTUATION = 'pun'; /** token style for a punctuation string. */ var PR_PLAIN = 'pln'; /** token style for an sgml tag. */ var PR_TAG = 'tag'; /** token style for a markup declaration such as a DOCTYPE. */ var PR_DECLARATION = 'dec'; /** token style for embedded source. */ var PR_SOURCE = 'src'; /** token style for an sgml attribute name. */ var PR_ATTRIB_NAME = 'atn'; /** token style for an sgml attribute value. */ 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. */ var PR_NOCODE = 'nocode'; /** A set of tokens that can precede a regular expression literal in * javascript. * 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 */ var REGEXP_PRECEDER_PATTERN = function () { var preceders = [ "!", "!=", "!==", "#", "%", "%=", "&", "&&", "&&=", "&=", "(", "*", "*=", /* "+", */ "+=", ",", /* "-", */ "-=", "->", /*".", "..", "...", handled below */ "/", "/=", ":", "::", ";", "<", "<<", "<<=", "<=", "=", "==", "===", ">", ">=", ">>", ">>=", ">>>", ">>>=", "?", "@", "[", "^", "^=", "^^", "^^=", "{", "|", "|=", "||", "||=", "~" /* handles =~ and !~ */, "break", "case", "continue", "delete", "do", "else", "finally", "instanceof", "return", "throw", "try", "typeof" ]; var pattern = '(?:^^|[+-]'; for (var i = 0; i < preceders.length; ++i) { pattern += '|' + preceders[i].replace(/([^=<>:&a-z])/g, '\\$1'); } pattern += ')\\s*'; // matches at end, and matches empty string return pattern; // 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. }(); // Define regexps here so that the interpreter doesn't have to create an // object each time the function containing them is called. // The language spec requires a new object created even if you don't access // the $1 members. var pr_amp = /&/g; var pr_lt = /</g; var pr_gt = />/g; var pr_quot = /\"/g; /** like textToHtml but escapes double quotes to be attribute safe. */ function attribToHtml(str) { return str.replace(pr_amp, '&') .replace(pr_lt, '<') .replace(pr_gt, '>') .replace(pr_quot, '"'); } /** escapest html special characters to html. */ function textToHtml(str) { return str.replace(pr_amp, '&') .replace(pr_lt, '<') .replace(pr_gt, '>'); } var pr_ltEnt = /</g; var pr_gtEnt = />/g; var pr_aposEnt = /'/g; var pr_quotEnt = /"/g; var pr_ampEnt = /&/g; var pr_nbspEnt = / /g; /** unescapes html to plain text. */ function htmlToText(html) { var pos = html.indexOf('&'); if (pos < 0) { return html; } // Handle numeric entities specially. We can't use functional substitution // since that doesn't work in older versions of Safari. // These should be rare since most browsers convert them to normal chars. for (--pos; (pos = html.indexOf('&#', pos + 1)) >= 0;) { var end = html.indexOf(';', pos); if (end >= 0) { var num = html.substring(pos + 3, end); var radix = 10; if (num && num.charAt(0) === 'x') { num = num.substring(1); radix = 16; } var codePoint = parseInt(num, radix); if (!isNaN(codePoint)) { html = (html.substring(0, pos) + String.fromCharCode(codePoint) + html.substring(end + 1)); } } } return html.replace(pr_ltEnt, '<') .replace(pr_gtEnt, '>') .replace(pr_aposEnt, "'") .replace(pr_quotEnt, '"') .replace(pr_nbspEnt, ' ') .replace(pr_ampEnt, '&'); } /** is the given node's innerHTML normally unescaped? */ function isRawContent(node) { return 'XMP' === node.tagName; } var newlineRe = /[\r\n]/g; /** * Are newlines and adjacent spaces significant in the given node's innerHTML? */ function isPreformatted(node, content) { // PRE means preformatted, and is a very common case, so don't create // unnecessary computed style objects. if ('PRE' === node.tagName) { return true; } if (!newlineRe.test(content)) { return true; } // Don't care var whitespace = ''; // For disconnected nodes, IE has no currentStyle. if (node.currentStyle) { whitespace = node.currentStyle.whiteSpace; } else if (window.getComputedStyle) { // Firefox makes a best guess if node is disconnected whereas Safari // returns the empty string. whitespace = window.getComputedStyle(node, null).whiteSpace; } return !whitespace || whitespace === 'pre'; } function normalizedHtml(node, out) { switch (node.nodeType) { case 1: // an element var name = node.tagName.toLowerCase(); out.push('<', name); for (var i = 0; i < node.attributes.length; ++i) { var attr = node.attributes[i]; if (!attr.specified) { continue; } out.push(' '); normalizedHtml(attr, out); } out.push('>'); for (var child = node.firstChild; child; child = child.nextSibling) { normalizedHtml(child, out); } if (node.firstChild || !/^(?:br|link|img)$/.test(name)) { out.push('<\/', name, '>'); } break; case 2: // an attribute out.push(node.name.toLowerCase(), '="', attribToHtml(node.value), '"'); break; case 3: case 4: // text out.push(textToHtml(node.nodeValue)); break; } } /** * Given a group of {@link RegExp}s, returns a {@code RegExp} that globally * matches the union o the sets o strings matched d 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; } } function decodeEscape(charsetPart) { if (charsetPart.charAt(0) !== '\\') { return charsetPart.charCodeAt(0); } switch (charsetPart.charAt(1)) { case 'b': return 8; case 't': return 9; case 'n': return 0xa; case 'v': return 0xb; case 'f': return 0xc; case 'r': return 0xd; case 'u': case 'x': return parseInt(charsetPart.substring(2), 16) || charsetPart.charCodeAt(1); case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': return parseInt(charsetPart.substring(1), 8); default: 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]; switch (p) { case '\\B': case '\\b': case '\\D': case '\\d': case '\\S': case '\\s': case '\\W': case '\\w': groups.push(p); continue; } 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. 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 (var 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 (var i = 0; i < consolidatedRanges.length; ++i) { var 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 (var i = 1; i < capturedGroups.length; ++i) { if (-1 === capturedGroups[i]) { capturedGroups[i] = ++capturedGroupIndex; } } for (var i = 0, groupIndex = 0; i < n; ++i) { var p = parts[i]; if (p === '(') { ++groupIndex; if (capturedGroups[groupIndex] === undefined) { parts[i] = '(?:'; } } else if ('\\' === p.charAt(0)) { var 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 (var i = 0, groupIndex = 0; i < n; ++i) { if ('^' === parts[i] && '^' !== parts[i + 1]) { parts[i] = ''; } } // Expand letters to groupts to handle mixing of case-sensitive and // case-insensitive patterns if necessary. if (regex.ignoreCase && needToFoldCase) { for (var i = 0; i < n; ++i) { var 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 (var i = 0, n = regexs.length; i < n; ++i) { var regex = regexs[i]; if (regex.global || regex.multiline) { throw new Error('' + regex); } rewritten.push( '(?:' + allowAnywhereFoldCaseAndRenumberGroups(regex) + ')'); } return new RegExp(rewritten.join('|'), ignoreCase ? 'gi' : 'g'); } var PR_innerHtmlWorks = null; function getInnerHtml(node) { // inner html is hopelessly broken in Safari 2.0.4 when the content is // an html description of well formed XML and the containing tag is a PRE // tag, so we detect that case and emulate innerHTML. if (null === PR_innerHtmlWorks) { var testNode = document.createElement('PRE'); testNode.appendChild( document.createTextNode('<!DOCTYPE foo PUBLIC "foo bar">\n<foo />')); PR_innerHtmlWorks = !/</.test(testNode.innerHTML); } if (PR_innerHtmlWorks) { var content = node.innerHTML; // XMP tags contain unescaped entities so require special handling. if (isRawContent(node)) { content = textToHtml(content); } else if (!isPreformatted(node, content)) { content = content.replace(/(<br\s*\/?>)[\r\n]+/g, '$1') .replace(/(?:[\r\n]+[ \t]*)+/g, ' '); } return content; } var out = []; for (var child = node.firstChild; child; child = child.nextSibling) { normalizedHtml(child, out); } return out.join(''); } /** returns a function that expand tabs to spaces. This function can be fed * successive chunks of text, and will maintain its own internal state to * keep track of how tabs are expanded. * @return {function (string) : string} a function that takes * plain text and return the text with tabs expanded. * @private */ function makeTabExpander(tabWidth) { var SPACES = ' '; var charInLine = 0; return function (plainText) { // walk over each character looking for tabs and newlines. // On tabs, expand them. On newlines, reset charInLine. // Otherwise increment charInLine var out = null; var pos = 0; for (var i = 0, n = plainText.length; i < n; ++i) { var ch = plainText.charAt(i); switch (ch) { case '\t': if (!out) { out = []; } out.push(plainText.substring(pos, i)); // calculate how much space we need in front of this part // nSpaces is the amount of padding -- the number of spaces needed // to move us to the next column, where columns occur at factors of // tabWidth. var nSpaces = tabWidth - (charInLine % tabWidth); charInLine += nSpaces; for (; nSpaces >= 0; nSpaces -= SPACES.length) { out.push(SPACES.substring(0, nSpaces)); } pos = i + 1; break; case '\n': charInLine = 0; break; default: ++charInLine; } } if (!out) { return plainText; } out.push(plainText.substring(pos)); return out.join(''); }; } var pr_chunkPattern = new RegExp( '[^<]+' // A run of characters other than '<' + '|<\!--[\\s\\S]*?--\>' // an HTML comment + '|<!\\[CDATA\\[[\\s\\S]*?\\]\\]>' // a CDATA section // a probable tag that should not be highlighted + '|<\/?[a-zA-Z](?:[^>\"\']|\'[^\']*\'|\"[^\"]*\")*>' + '|<', // A '<' that does not begin a larger chunk 'g'); var pr_commentPrefix = /^<\!--/; var pr_cdataPrefix = /^<!\[CDATA\[/; var pr_brPrefix = /^<br\b/i; var pr_tagNameRe = /^<(\/?)([a-zA-Z][a-zA-Z0-9]*)/; /** split markup into chunks of html tags (style null) and * plain text (style {@link #PR_PLAIN}), converting tags which are * significant for tokenization (<br>) into their textual equivalent. * * @param {string} s html where whitespace is considered significant. * @return {Object} source code and extracted tags. * @private */ function extractTags(s) { // since the pattern has the 'g' modifier and defines no capturing groups, // this will return a list of all chunks which we then classify and wrap as // PR_Tokens var matches = s.match(pr_chunkPattern); var sourceBuf = []; var sourceBufLen = 0; var extractedTags = []; if (matches) { for (var i = 0, n = matches.length; i < n; ++i) { var match = matches[i]; if (match.length > 1 && match.charAt(0) === '<') { if (pr_commentPrefix.test(match)) { continue; } if (pr_cdataPrefix.test(match)) { // strip CDATA prefix and suffix. Don't unescape since it's CDATA sourceBuf.push(match.substring(9, match.length - 3)); sourceBufLen += match.length - 12; } else if (pr_brPrefix.test(match)) { // <br> tags are lexically significant so convert them to text. // This is undone later. sourceBuf.push('\n'); ++sourceBufLen; } else { if (match.indexOf(PR_NOCODE) >= 0 && isNoCodeTag(match)) { // A <span class="nocode"> will start a section that should be // ignored. Continue walking the list until we see a matching end // tag. var name = match.match(pr_tagNameRe)[2]; var depth = 1; var j; end_tag_loop: for (j = i + 1; j < n; ++j) { var name2 = matches[j].match(pr_tagNameRe); if (name2 && name2[2] === name) { if (name2[1] === '/') { if (--depth === 0) { break end_tag_loop; } } else { ++depth; } } } if (j < n) { extractedTags.push( sourceBufLen, matches.slice(i, j + 1).join('')); i = j; } else { // Ignore unclosed sections. extractedTags.push(sourceBufLen, match); } } else { extractedTags.push(sourceBufLen, match); } } } else { var literalText = htmlToText(match); sourceBuf.push(literalText); sourceBufLen += literalText.length; } } } return { source: sourceBuf.join(''), tags: extractedTags }; } /** True if the given tag contains a class attribute with the nocode class. */ function isNoCodeTag(tag) { return !!tag // First canonicalize the representation of attributes .replace(/\s(\w+)\s*=\s*(?:\"([^\"]*)\"|'([^\']*)'|(\S+))/g, ' $1="$2$3$4"') // Then look for the attribute we want. .match(/[cC][lL][aA][sS][sS]=\"[^\"]*\bnocode\b/); } /** * 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 = { source: sourceCode, basePos: basePos }; langHandler(job); out.push.apply(out, job.decorations); } /** 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; var notWs = /\S/; /** * Lexes job.source and produces an output array job.decorations of style * classes preceded by the position at which they start in job.source in * order. * * @param {Object} job an object like {@code * source: {string} sourceText plain text, * basePos: {int} position of job.source in the larger chunk of * sourceCode. * } */ var decorate = function (job) { var sourceCode = job.source, 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, /^@\"(?:[^\"]|\"\")*(?:\"|$)/, null]); } if (options['hashComments']) { if (options['cStyleComments']) { // Stop C preprocessor declarations at an unclosed open comment shortcutStylePatterns.push( [PR_COMMENT, /^#(?:(?:define|elif|else|endif|error|ifdef|include|ifndef|line|pragma|undef|warning)\b|[^\r\n]*)/, null, '#']); fallthroughStylePatterns.push( [PR_STRING, /^<(?:(?:(?:\.\.\/)*|\/?)(?:[\w-]+(?:\/[\w-]+)+)?[\w-]+\.h|[a-z]\w*)>/, null]); } else { shortcutStylePatterns.push([PR_COMMENT, /^#[^\r\n]*/, null, '#']); } } if (options['cStyleComments']) { fallthroughStylePatterns.push([PR_COMMENT, /^\/\/[^\r\n]*/, null]); fallthroughStylePatterns.push( [PR_COMMENT, /^\/\*[\s\S]*?(?:\*\/|$)/, null]); } if (options['regexLiterals']) { 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|$))+' // finally closed by a /. + '/'); fallthroughStylePatterns.push( ['lang-regex', new RegExp('^' + REGEXP_PRECEDER_PATTERN + '(' + REGEX_LITERAL + ')') ]); } var keywords = options['keywords'].replace(/^\s+|\s+$/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_$@0-9]*/, null], [PR_PLAIN, /^[a-z_$][a-z_$@0-9]*/i, null], [PR_LITERAL, new RegExp( '^(?:' // A hex number + '0x[a-f0-9]+' // or an octal or decimal number, + '|(?:\\d(?:_\\d+)*\\d*(?:\\.\\d*)?|\\.\\d\\+)' // possibly in scientific notation + '(?:e[+\\-]?\\d+)?' + ')' // with an optional modifier like UL for unsigned long + '[a-z]*', 'i'), null, '0123456789'], [PR_PUNCTUATION, /^.[^\s\w\.$@\'\"\`\/\#]*/, null]); return createSimpleLexer(shortcutStylePatterns, fallthroughStylePatterns); } var decorateSource = sourceDecorator({ 'keywords': ALL_KEYWORDS, 'hashComments': true, 'cStyleComments': true, 'multiLineStrings': true, 'regexLiterals': true }); /** Breaks {@code job.source} around style boundaries in * {@code job.decorations} while re-interleaving {@code job.extractedTags}, * and leaves the result in {@code job.prettyPrintedHtml}. * @param {Object} job like { * source: {string} source as plain text, * extractedTags: {Array.<number|string>} extractedTags chunks of raw * html preceded by their position in {@code job.source} * in order * decorations: {Array.<number|string} an array of style classes preceded * by the position at which they start in job.source in order * } * @private */ function recombineTagsAndDecorations(job) { var sourceText = job.source; var extractedTags = job.extractedTags; var decorations = job.decorations; var html = []; // index past the last char in sourceText written to html var outputIdx = 0; var openDecoration = null; var currentDecoration = null; var tagPos = 0; // index into extractedTags var decPos = 0; // index into decorations var tabExpander = makeTabExpander(window['PR_TAB_WIDTH']); var adjacentSpaceRe = /([\r\n ]) /g; var startOrSpaceRe = /(^| ) /gm; var newlineRe = /\r\n?|\n/g; var trailingSpaceRe = /[ \r\n]$/; var lastWasSpace = true; // the last text chunk emitted ended with a space. // A helper function that is responsible for opening sections of decoration // and outputing properly escaped chunks of source function emitTextUpTo(sourceIdx) { if (sourceIdx > outputIdx) { if (openDecoration && openDecoration !== currentDecoration) { // Close the current decoration html.push('</span>'); openDecoration = null; } if (!openDecoration && currentDecoration) { openDecoration = currentDecoration; html.push('<span class="', openDecoration, '">'); } // This interacts badly with some wikis which introduces paragraph tags // into pre blocks for some strange reason. // It's necessary for IE though which seems to lose the preformattedness // of <pre> tags when their innerHTML is assigned. // http://stud3.tuwien.ac.at/~e0226430/innerHtmlQuirk.html // and it serves to undo the conversion of <br>s to newlines done in // chunkify. var htmlChunk = textToHtml( tabExpander(sourceText.substring(outputIdx, sourceIdx))) .replace(lastWasSpace ? startOrSpaceRe : adjacentSpaceRe, '$1 '); // Keep track of whether we need to escape space at the beginning of the // next chunk. lastWasSpace = trailingSpaceRe.test(htmlChunk); // IE collapses multiple adjacient <br>s into 1 line break. // Prefix every <br> with ' ' can prevent such IE's behavior. var lineBreakHtml = window['_pr_isIE6']() ? ' <br />' : '<br />'; html.push(htmlChunk.replace(newlineRe, lineBreakHtml)); outputIdx = sourceIdx; } } while (true) { // Determine if we're going to consume a tag this time around. Otherwise // we consume a decoration or exit. var outputTag; if (tagPos < extractedTags.length) { if (decPos < decorations.length) { // Pick one giving preference to extractedTags since we shouldn't open // a new style that we're going to have to immediately close in order // to output a tag. outputTag = extractedTags[tagPos] <= decorations[decPos]; } else { outputTag = true; } } else { outputTag = false; } // Consume either a decoration or a tag or exit. if (outputTag) { emitTextUpTo(extractedTags[tagPos]); if (openDecoration) { // Close the current decoration html.push('</span>'); openDecoration = null; } html.push(extractedTags[tagPos + 1]); tagPos += 2; } else if (decPos < decorations.length) { emitTextUpTo(decorations[decPos]); currentDecoration = decorations[decPos + 1]; decPos += 2; } else { break; } } emitTextUpTo(sourceText.length); if (openDecoration) { html.push('</span>'); } job.prettyPrintedHtml = html.join(''); } /** 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 { * source: {string} as plain text. * decorations: {Array.<number|string>} an array of style classes * preceded by the position at which they start in * job.source 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 ('console' in window) { 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 }), ['c', 'cc', 'cpp', 'cxx', 'cyc', 'm']); registerLangHandler(sourceDecorator({ 'keywords': 'null true false' }), ['json']); registerLangHandler(sourceDecorator({ 'keywords': CSHARP_KEYWORDS, 'hashComments': true, 'cStyleComments': true, 'verbatimStrings': true }), ['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( createSimpleLexer([], [[PR_STRING, /^[\s\S]+/]]), ['regex']); function applyDecorator(job) { var sourceCodeHtml = job.sourceCodeHtml; var opt_langExtension = job.langExtension; // Prepopulate output in case processing fails with an exception. job.prettyPrintedHtml = sourceCodeHtml; try { // Extract tags, and convert the source code to plain text. var sourceAndExtractedTags = extractTags(sourceCodeHtml); /** Plain text. @type {string} */ var source = sourceAndExtractedTags.source; job.source = source; job.basePos = 0; /** Even entries are positions in source in ascending order. Odd entries * are tags that were extracted at that position. * @type {Array.<number|string>} */ job.extractedTags = sourceAndExtractedTags.tags; // Apply the appropriate language handler langHandlerForExtension(opt_langExtension, source)(job); // Integrate the decorations and tags back into the source code to produce // a decorated html string which is left in job.prettyPrintedHtml. recombineTagsAndDecorations(job); } catch (e) { if ('console' in window) { console.log(e); console.trace(); } } } function prettyPrintOne(sourceCodeHtml, opt_langExtension) { var job = { sourceCodeHtml: sourceCodeHtml, langExtension: opt_langExtension }; applyDecorator(job); return job.prettyPrintedHtml; } function prettyPrint(opt_whenDone) { var isIE678 = window['_pr_isIE6'](); var ieNewline = isIE678 === 6 ? '\r\n' : '\r'; // See bug 71 and http://stackoverflow.com/questions/136443/why-doesnt-ie7- // fetch a list of nodes to rewrite var codeSegments = [ document.getElementsByTagName('pre'), document.getElementsByTagName('code'), document.getElementsByTagName('td'), /* ND Change: Add tables to support prototypes. */ document.getElementsByTagName('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).getTime(); } }; } // 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; 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]; if (cs.className && cs.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. var langExtension = cs.className.match(/\blang-(\w+)\b/); 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.tagName === 'td') && /* ND Change: Add tables to support prototypes */ p.className && p.className.indexOf('prettyprint') >= 0) { nested = true; break; } } if (!nested) { // fetch the content as a snippet of properly escaped HTML. // Firefox adds newlines at the end. var content = getInnerHtml(cs); content = content.replace(/(?:\r\n?|\n)$/, ''); /* ND Change: we need to preserve s so change them to a special character instead of a space. */ content = content.replace(/ /g, '\x11'); // do the pretty printing prettyPrintingJob = { sourceCodeHtml: content, langExtension: langExtension, sourceNode: cs }; applyDecorator(prettyPrintingJob); replaceWithPrettyPrintedHtml(); } } } if (k < elements.length) { // finish up in a continuation setTimeout(doWork, 250); } else if (opt_whenDone) { opt_whenDone(); } } function replaceWithPrettyPrintedHtml() { var newContent = prettyPrintingJob.prettyPrintedHtml; if (!newContent) { return; } /* ND Change: Restore the preserved s. */ newContent = newContent.replace(/\x11/g, ' '); var cs = prettyPrintingJob.sourceNode; // push the prettified html back into the tag. if (!isRawContent(cs)) { // just replace the old html with the new cs.innerHTML = newContent; } else { // we need to change the tag to a <pre> since <xmp>s do not allow // embedded tags such as the span tags used to attach styles to // sections of source code. var pre = document.createElement('PRE'); for (var i = 0; i < cs.attributes.length; ++i) { var a = cs.attributes[i]; if (a.specified) { var aname = a.name.toLowerCase(); if (aname === 'class') { pre.className = a.value; // For IE 6 } else { pre.setAttribute(a.name, a.value); } } } pre.innerHTML = newContent; // remove the old cs.parentNode.replaceChild(pre, cs); cs = pre; } // Replace <br>s with line-feeds so that copying and pasting works // on IE 6. // Doing this on other browsers breaks lots of stuff since \r\n is // treated as two newlines on Firefox, and doing this also slows // down rendering. if (isIE678 && cs.tagName === 'PRE') { var lineBreaks = cs.getElementsByTagName('br'); for (var j = lineBreaks.length; --j >= 0;) { var lineBreak = lineBreaks[j]; lineBreak.parentNode.replaceChild( document.createTextNode(ieNewline), lineBreak); } } } doWork(); } window['PR_normalizedHtml'] = normalizedHtml; window['prettyPrintOne'] = prettyPrintOne; window['prettyPrint'] = prettyPrint; window['PR'] = { 'combinePrefixPatterns': combinePrefixPatterns, '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 }; })(); // ____________________________________________________________________________ // Lua extension PR.registerLangHandler(PR.createSimpleLexer([[PR.PR_PLAIN,/^[\t\n\r \xA0]+/,null,' \n\r \xa0'],[PR.PR_STRING,/^(?:\"(?:[^\"\\]|\\[\s\S])*(?:\"|$)|\'(?:[^\'\\]|\\[\s\S])*(?:\'|$))/,null,'\"\'']],[[PR.PR_COMMENT,/^--(?:\[(=*)\[[\s\S]*?(?:\]\1\]|$)|[^\r\n]*)/],[PR.PR_STRING,/^\[(=*)\[[\s\S]*?(?:\]\1\]|$)/],[PR.PR_KEYWORD,/^(?:and|break|do|else|elseif|end|false|for|function|if|in|local|nil|not|or|repeat|return|then|true|until|while)\b/,null],[PR.PR_LITERAL,/^[+-]?(?:0x[\da-f]+|(?:(?:\.\d+|\d+(?:\.\d*)?)(?:e[+\-]?\d+)?))/i],[PR.PR_PLAIN,/^[a-z_]\w*/i],[PR.PR_PUNCTUATION,/^[^\w\t\n\r \xA0][^\w\t\n\r \xA0\"\'\-\+=]*/]]),['lua']) // Haskell extension PR.registerLangHandler(PR.createSimpleLexer([[PR.PR_PLAIN,/^[\t\n\x0B\x0C\r ]+/,null,' \n \r '],[PR.PR_STRING,/^\"(?:[^\"\\\n\x0C\r]|\\[\s\S])*(?:\"|$)/,null,'\"'],[PR.PR_STRING,/^\'(?:[^\'\\\n\x0C\r]|\\[^&])\'?/,null,'\''],[PR.PR_LITERAL,/^(?:0o[0-7]+|0x[\da-f]+|\d+(?:\.\d+)?(?:e[+\-]?\d+)?)/i,null,'0123456789']],[[PR.PR_COMMENT,/^(?:(?:--+(?:[^\r\n\x0C]*)?)|(?:\{-(?:[^-]|-+[^-\}])*-\}))/],[PR.PR_KEYWORD,/^(?:case|class|data|default|deriving|do|else|if|import|in|infix|infixl|infixr|instance|let|module|newtype|of|then|type|where|_)(?=[^a-zA-Z0-9\']|$)/,null],[PR.PR_PLAIN,/^(?:[A-Z][\w\']*\.)*[a-zA-Z][\w\']*/],[PR.PR_PUNCTUATION,/^[^\t\n\x0B\x0C\r a-zA-Z0-9\'\"]+/]]),['hs']) // ML extension PR.registerLangHandler(PR.createSimpleLexer([[PR.PR_PLAIN,/^[\t\n\r \xA0]+/,null,' \n\r \xa0'],[PR.PR_COMMENT,/^#(?:if[\t\n\r \xA0]+(?:[a-z_$][\w\']*|``[^\r\n\t`]*(?:``|$))|else|endif|light)/i,null,'#'],[PR.PR_STRING,/^(?:\"(?:[^\"\\]|\\[\s\S])*(?:\"|$)|\'(?:[^\'\\]|\\[\s\S])*(?:\'|$))/,null,'\"\'']],[[PR.PR_COMMENT,/^(?:\/\/[^\r\n]*|\(\*[\s\S]*?\*\))/],[PR.PR_KEYWORD,/^(?:abstract|and|as|assert|begin|class|default|delegate|do|done|downcast|downto|elif|else|end|exception|extern|false|finally|for|fun|function|if|in|inherit|inline|interface|internal|lazy|let|match|member|module|mutable|namespace|new|null|of|open|or|override|private|public|rec|return|static|struct|then|to|true|try|type|upcast|use|val|void|when|while|with|yield|asr|land|lor|lsl|lsr|lxor|mod|sig|atomic|break|checked|component|const|constraint|constructor|continue|eager|event|external|fixed|functor|global|include|method|mixin|object|parallel|process|protected|pure|sealed|trait|virtual|volatile)\b/],[PR.PR_LITERAL,/^[+\-]?(?:0x[\da-f]+|(?:(?:\.\d+|\d+(?:\.\d*)?)(?:e[+\-]?\d+)?))/i],[PR.PR_PLAIN,/^(?:[a-z_]\w*[!?#]?|``[^\r\n\t`]*(?:``|$))/i],[PR.PR_PUNCTUATION,/^[^\t\n\r \xA0\"\'\w]+/]]),['fs','ml']) // SQL extension PR.registerLangHandler(PR.createSimpleLexer([[PR.PR_PLAIN,/^[\t\n\r \xA0]+/,null,' \n\r \xa0'],[PR.PR_STRING,/^(?:"(?:[^\"\\]|\\.)*"|'(?:[^\'\\]|\\.)*')/,null,'\"\'']],[[PR.PR_COMMENT,/^(?:--[^\r\n]*|\/\*[\s\S]*?(?:\*\/|$))/],[PR.PR_KEYWORD,/^(?:ADD|ALL|ALTER|AND|ANY|AS|ASC|AUTHORIZATION|BACKUP|BEGIN|BETWEEN|BREAK|BROWSE|BULK|BY|CASCADE|CASE|CHECK|CHECKPOINT|CLOSE|CLUSTERED|COALESCE|COLLATE|COLUMN|COMMIT|COMPUTE|CONSTRAINT|CONTAINS|CONTAINSTABLE|CONTINUE|CONVERT|CREATE|CROSS|CURRENT|CURRENT_DATE|CURRENT_TIME|CURRENT_TIMESTAMP|CURRENT_USER|CURSOR|DATABASE|DBCC|DEALLOCATE|DECLARE|DEFAULT|DELETE|DENY|DESC|DISK|DISTINCT|DISTRIBUTED|DOUBLE|DROP|DUMMY|DUMP|ELSE|END|ERRLVL|ESCAPE|EXCEPT|EXEC|EXECUTE|EXISTS|EXIT|FETCH|FILE|FILLFACTOR|FOR|FOREIGN|FREETEXT|FREETEXTTABLE|FROM|FULL|FUNCTION|GOTO|GRANT|GROUP|HAVING|HOLDLOCK|IDENTITY|IDENTITYCOL|IDENTITY_INSERT|IF|IN|INDEX|INNER|INSERT|INTERSECT|INTO|IS|JOIN|KEY|KILL|LEFT|LIKE|LINENO|LOAD|NATIONAL|NOCHECK|NONCLUSTERED|NOT|NULL|NULLIF|OF|OFF|OFFSETS|ON|OPEN|OPENDATASOURCE|OPENQUERY|OPENROWSET|OPENXML|OPTION|OR|ORDER|OUTER|OVER|PERCENT|PLAN|PRECISION|PRIMARY|PRINT|PROC|PROCEDURE|PUBLIC|RAISERROR|READ|READTEXT|RECONFIGURE|REFERENCES|REPLICATION|RESTORE|RESTRICT|RETURN|REVOKE|RIGHT|ROLLBACK|ROWCOUNT|ROWGUIDCOL|RULE|SAVE|SCHEMA|SELECT|SESSION_USER|SET|SETUSER|SHUTDOWN|SOME|STATISTICS|SYSTEM_USER|TABLE|TEXTSIZE|THEN|TO|TOP|TRAN|TRANSACTION|TRIGGER|TRUNCATE|TSEQUAL|UNION|UNIQUE|UPDATE|UPDATETEXT|USE|USER|VALUES|VARYING|VIEW|WAITFOR|WHEN|WHERE|WHILE|WITH|WRITETEXT)(?=[^\w-]|$)/i,null],[PR.PR_LITERAL,/^[+-]?(?:0x[\da-f]+|(?:(?:\.\d+|\d+(?:\.\d*)?)(?:e[+\-]?\d+)?))/i],[PR.PR_PLAIN,/^[a-z_][\w-]*/i],[PR.PR_PUNCTUATION,/^[^\w\t\n\r \xA0\"\'][^\w\t\n\r \xA0+\-\"\']*/]]),['sql']) // VB extension PR.registerLangHandler(PR.createSimpleLexer([[PR.PR_PLAIN,/^[\t\n\r \xA0\u2028\u2029]+/,null,' \n\r 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