--- /dev/null
+// 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('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.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)$/, '');
+
+ // 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; }
+ 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
+ };
+})();
git.quilime.com / plog_bk.git / commitdiff