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syntax highlight code #151

Closed
wants to merge 1 commit into from

2 participants

@visnup

with shjs from nodejs.org

@isaacs
Owner

Landed, thanks!

@isaacs isaacs closed this
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Commits on Sep 6, 2012
  1. @visnup

    syntax highlight code

    visnup authored
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23 static/sh.css
@@ -0,0 +1,23 @@
+.sh_sourceCode {
+ font-weight: normal;
+ font-style: normal;
+}
+
+.sh_sourceCode .sh_symbol , .sh_sourceCode .sh_cbracket {
+ color: #333;
+}
+
+.sh_sourceCode .sh_keyword {
+ color: #c96;
+}
+
+.sh_sourceCode .sh_string, .sh_sourceCode .sh_regexp, .sh_sourceCode .sh_number,
+.sh_sourceCode .sh_specialchar
+{
+ color: #690;
+}
+
+.sh_sourceCode .sh_comment {
+ color: #666;
+}
+
View
1  static/sh_javascript.min.js
@@ -0,0 +1 @@
+if(!this.sh_languages){this.sh_languages={}}sh_languages.javascript=[[[/\/\/\//g,"sh_comment",1],[/\/\//g,"sh_comment",7],[/\/\*\*/g,"sh_comment",8],[/\/\*/g,"sh_comment",9],[/\b(?:abstract|break|case|catch|class|const|continue|debugger|default|delete|do|else|enum|export|extends|false|final|finally|for|function|goto|if|implements|in|instanceof|interface|native|new|null|private|protected|prototype|public|return|static|super|switch|synchronized|throw|throws|this|transient|true|try|typeof|var|volatile|while|with)\b/g,"sh_keyword",-1],[/(\+\+|--|\)|\])(\s*)(\/=?(?![*\/]))/g,["sh_symbol","sh_normal","sh_symbol"],-1],[/(0x[A-Fa-f0-9]+|(?:[\d]*\.)?[\d]+(?:[eE][+-]?[\d]+)?)(\s*)(\/(?![*\/]))/g,["sh_number","sh_normal","sh_symbol"],-1],[/([A-Za-z$_][A-Za-z0-9$_]*\s*)(\/=?(?![*\/]))/g,["sh_normal","sh_symbol"],-1],[/\/(?:\\.|[^*\\\/])(?:\\.|[^\\\/])*\/[gim]*/g,"sh_regexp",-1],[/\b[+-]?(?:(?:0x[A-Fa-f0-9]+)|(?:(?:[\d]*\.)?[\d]+(?:[eE][+-]?[\d]+)?))u?(?:(?:int(?:8|16|32|64))|L)?\b/g,"sh_number",-1],[/"/g,"sh_string",10],[/'/g,"sh_string",11],[/~|!|%|\^|\*|\(|\)|-|\+|=|\[|\]|\\|:|;|,|\.|\/|\?|&|<|>|\|/g,"sh_symbol",-1],[/\{|\}/g,"sh_cbracket",-1],[/\b(?:Math|Infinity|NaN|undefined|arguments)\b/g,"sh_predef_var",-1],[/\b(?:Array|Boolean|Date|Error|EvalError|Function|Number|Object|RangeError|ReferenceError|RegExp|String|SyntaxError|TypeError|URIError|decodeURI|decodeURIComponent|encodeURI|encodeURIComponent|eval|isFinite|isNaN|parseFloat|parseInt)\b/g,"sh_predef_func",-1],[/(?:[A-Za-z]|_)[A-Za-z0-9_]*(?=[ \t]*\()/g,"sh_function",-1]],[[/$/g,null,-2],[/(?:<?)[A-Za-z0-9_\.\/\-_~]+@[A-Za-z0-9_\.\/\-_~]+(?:>?)|(?:<?)[A-Za-z0-9_]+:\/\/[A-Za-z0-9_\.\/\-_~]+(?:>?)/g,"sh_url",-1],[/<\?xml/g,"sh_preproc",2,1],[/<!DOCTYPE/g,"sh_preproc",4,1],[/<!--/g,"sh_comment",5],[/<(?:\/)?[A-Za-z](?:[A-Za-z0-9_:.-]*)(?:\/)?>/g,"sh_keyword",-1],[/<(?:\/)?[A-Za-z](?:[A-Za-z0-9_:.-]*)/g,"sh_keyword",6,1],[/&(?:[A-Za-z0-9]+);/g,"sh_preproc",-1],[/<(?:\/)?[A-Za-z][A-Za-z0-9]*(?:\/)?>/g,"sh_keyword",-1],[/<(?:\/)?[A-Za-z][A-Za-z0-9]*/g,"sh_keyword",6,1],[/@[A-Za-z]+/g,"sh_type",-1],[/(?:TODO|FIXME|BUG)(?:[:]?)/g,"sh_todo",-1]],[[/\?>/g,"sh_preproc",-2],[/([^=" \t>]+)([ \t]*)(=?)/g,["sh_type","sh_normal","sh_symbol"],-1],[/"/g,"sh_string",3]],[[/\\(?:\\|")/g,null,-1],[/"/g,"sh_string",-2]],[[/>/g,"sh_preproc",-2],[/([^=" \t>]+)([ \t]*)(=?)/g,["sh_type","sh_normal","sh_symbol"],-1],[/"/g,"sh_string",3]],[[/-->/g,"sh_comment",-2],[/<!--/g,"sh_comment",5]],[[/(?:\/)?>/g,"sh_keyword",-2],[/([^=" \t>]+)([ \t]*)(=?)/g,["sh_type","sh_normal","sh_symbol"],-1],[/"/g,"sh_string",3]],[[/$/g,null,-2]],[[/\*\//g,"sh_comment",-2],[/(?:<?)[A-Za-z0-9_\.\/\-_~]+@[A-Za-z0-9_\.\/\-_~]+(?:>?)|(?:<?)[A-Za-z0-9_]+:\/\/[A-Za-z0-9_\.\/\-_~]+(?:>?)/g,"sh_url",-1],[/<\?xml/g,"sh_preproc",2,1],[/<!DOCTYPE/g,"sh_preproc",4,1],[/<!--/g,"sh_comment",5],[/<(?:\/)?[A-Za-z](?:[A-Za-z0-9_:.-]*)(?:\/)?>/g,"sh_keyword",-1],[/<(?:\/)?[A-Za-z](?:[A-Za-z0-9_:.-]*)/g,"sh_keyword",6,1],[/&(?:[A-Za-z0-9]+);/g,"sh_preproc",-1],[/<(?:\/)?[A-Za-z][A-Za-z0-9]*(?:\/)?>/g,"sh_keyword",-1],[/<(?:\/)?[A-Za-z][A-Za-z0-9]*/g,"sh_keyword",6,1],[/@[A-Za-z]+/g,"sh_type",-1],[/(?:TODO|FIXME|BUG)(?:[:]?)/g,"sh_todo",-1]],[[/\*\//g,"sh_comment",-2],[/(?:<?)[A-Za-z0-9_\.\/\-_~]+@[A-Za-z0-9_\.\/\-_~]+(?:>?)|(?:<?)[A-Za-z0-9_]+:\/\/[A-Za-z0-9_\.\/\-_~]+(?:>?)/g,"sh_url",-1],[/(?:TODO|FIXME|BUG)(?:[:]?)/g,"sh_todo",-1]],[[/"/g,"sh_string",-2],[/\\./g,"sh_specialchar",-1]],[[/'/g,"sh_string",-2],[/\\./g,"sh_specialchar",-1]]];
View
553 static/sh_main.js
@@ -0,0 +1,553 @@
+/*
+SHJS - Syntax Highlighting in JavaScript
+Copyright (C) 2007, 2008 gnombat@users.sourceforge.net
+License: http://shjs.sourceforge.net/doc/gplv3.html
+*/
+
+if (! this.sh_languages) {
+ this.sh_languages = {};
+}
+var sh_requests = {};
+
+function sh_isEmailAddress(url) {
+ if (/^mailto:/.test(url)) {
+ return false;
+ }
+ return url.indexOf('@') !== -1;
+}
+
+function sh_setHref(tags, numTags, inputString) {
+ var url = inputString.substring(tags[numTags - 2].pos, tags[numTags - 1].pos);
+ if (url.length >= 2 && url.charAt(0) === '<' && url.charAt(url.length - 1) === '>') {
+ url = url.substr(1, url.length - 2);
+ }
+ if (sh_isEmailAddress(url)) {
+ url = 'mailto:' + url;
+ }
+ tags[numTags - 2].node.href = url;
+}
+
+/*
+Konqueror has a bug where the regular expression /$/g will not match at the end
+of a line more than once:
+
+ var regex = /$/g;
+ var match;
+
+ var line = '1234567890';
+ regex.lastIndex = 10;
+ match = regex.exec(line);
+
+ var line2 = 'abcde';
+ regex.lastIndex = 5;
+ match = regex.exec(line2); // fails
+*/
+function sh_konquerorExec(s) {
+ var result = [''];
+ result.index = s.length;
+ result.input = s;
+ return result;
+}
+
+/**
+Highlights all elements containing source code in a text string. The return
+value is an array of objects, each representing an HTML start or end tag. Each
+object has a property named pos, which is an integer representing the text
+offset of the tag. Every start tag also has a property named node, which is the
+DOM element started by the tag. End tags do not have this property.
+@param inputString a text string
+@param language a language definition object
+@return an array of tag objects
+*/
+function sh_highlightString(inputString, language) {
+ if (/Konqueror/.test(navigator.userAgent)) {
+ if (! language.konquered) {
+ for (var s = 0; s < language.length; s++) {
+ for (var p = 0; p < language[s].length; p++) {
+ var r = language[s][p][0];
+ if (r.source === '$') {
+ r.exec = sh_konquerorExec;
+ }
+ }
+ }
+ language.konquered = true;
+ }
+ }
+
+ var a = document.createElement('a');
+ var span = document.createElement('span');
+
+ // the result
+ var tags = [];
+ var numTags = 0;
+
+ // each element is a pattern object from language
+ var patternStack = [];
+
+ // the current position within inputString
+ var pos = 0;
+
+ // the name of the current style, or null if there is no current style
+ var currentStyle = null;
+
+ var output = function(s, style) {
+ var length = s.length;
+ // this is more than just an optimization - we don't want to output empty <span></span> elements
+ if (length === 0) {
+ return;
+ }
+ if (! style) {
+ var stackLength = patternStack.length;
+ if (stackLength !== 0) {
+ var pattern = patternStack[stackLength - 1];
+ // check whether this is a state or an environment
+ if (! pattern[3]) {
+ // it's not a state - it's an environment; use the style for this environment
+ style = pattern[1];
+ }
+ }
+ }
+ if (currentStyle !== style) {
+ if (currentStyle) {
+ tags[numTags++] = {pos: pos};
+ if (currentStyle === 'sh_url') {
+ sh_setHref(tags, numTags, inputString);
+ }
+ }
+ if (style) {
+ var clone;
+ if (style === 'sh_url') {
+ clone = a.cloneNode(false);
+ }
+ else {
+ clone = span.cloneNode(false);
+ }
+ clone.className = style;
+ tags[numTags++] = {node: clone, pos: pos};
+ }
+ }
+ pos += length;
+ currentStyle = style;
+ };
+
+ var endOfLinePattern = /\r\n|\r|\n/g;
+ endOfLinePattern.lastIndex = 0;
+ var inputStringLength = inputString.length;
+ while (pos < inputStringLength) {
+ var start = pos;
+ var end;
+ var startOfNextLine;
+ var endOfLineMatch = endOfLinePattern.exec(inputString);
+ if (endOfLineMatch === null) {
+ end = inputStringLength;
+ startOfNextLine = inputStringLength;
+ }
+ else {
+ end = endOfLineMatch.index;
+ startOfNextLine = endOfLinePattern.lastIndex;
+ }
+
+ var line = inputString.substring(start, end);
+
+ var matchCache = [];
+ for (;;) {
+ var posWithinLine = pos - start;
+
+ var stateIndex;
+ var stackLength = patternStack.length;
+ if (stackLength === 0) {
+ stateIndex = 0;
+ }
+ else {
+ // get the next state
+ stateIndex = patternStack[stackLength - 1][2];
+ }
+
+ var state = language[stateIndex];
+ var numPatterns = state.length;
+ var mc = matchCache[stateIndex];
+ if (! mc) {
+ mc = matchCache[stateIndex] = [];
+ }
+ var bestMatch = null;
+ var bestPatternIndex = -1;
+ for (var i = 0; i < numPatterns; i++) {
+ var match;
+ if (i < mc.length && (mc[i] === null || posWithinLine <= mc[i].index)) {
+ match = mc[i];
+ }
+ else {
+ var regex = state[i][0];
+ regex.lastIndex = posWithinLine;
+ match = regex.exec(line);
+ mc[i] = match;
+ }
+ if (match !== null && (bestMatch === null || match.index < bestMatch.index)) {
+ bestMatch = match;
+ bestPatternIndex = i;
+ if (match.index === posWithinLine) {
+ break;
+ }
+ }
+ }
+
+ if (bestMatch === null) {
+ output(line.substring(posWithinLine), null);
+ break;
+ }
+ else {
+ // got a match
+ if (bestMatch.index > posWithinLine) {
+ output(line.substring(posWithinLine, bestMatch.index), null);
+ }
+
+ var pattern = state[bestPatternIndex];
+
+ var newStyle = pattern[1];
+ var matchedString;
+ if (newStyle instanceof Array) {
+ for (var subexpression = 0; subexpression < newStyle.length; subexpression++) {
+ matchedString = bestMatch[subexpression + 1];
+ output(matchedString, newStyle[subexpression]);
+ }
+ }
+ else {
+ matchedString = bestMatch[0];
+ output(matchedString, newStyle);
+ }
+
+ switch (pattern[2]) {
+ case -1:
+ // do nothing
+ break;
+ case -2:
+ // exit
+ patternStack.pop();
+ break;
+ case -3:
+ // exitall
+ patternStack.length = 0;
+ break;
+ default:
+ // this was the start of a delimited pattern or a state/environment
+ patternStack.push(pattern);
+ break;
+ }
+ }
+ }
+
+ // end of the line
+ if (currentStyle) {
+ tags[numTags++] = {pos: pos};
+ if (currentStyle === 'sh_url') {
+ sh_setHref(tags, numTags, inputString);
+ }
+ currentStyle = null;
+ }
+ pos = startOfNextLine;
+ }
+
+ return tags;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// DOM-dependent functions
+
+function sh_getClasses(element) {
+ var result = [];
+ var htmlClass = element.className;
+ if (htmlClass && htmlClass.length > 0) {
+ var htmlClasses = htmlClass.split(' ');
+ for (var i = 0; i < htmlClasses.length; i++) {
+ if (htmlClasses[i].length > 0) {
+ result.push(htmlClasses[i]);
+ }
+ }
+ }
+ return result;
+}
+
+function sh_addClass(element, name) {
+ var htmlClasses = sh_getClasses(element);
+ for (var i = 0; i < htmlClasses.length; i++) {
+ if (name.toLowerCase() === htmlClasses[i].toLowerCase()) {
+ return;
+ }
+ }
+ htmlClasses.push(name);
+ element.className = htmlClasses.join(' ');
+}
+
+/**
+Extracts the tags from an HTML DOM NodeList.
+@param nodeList a DOM NodeList
+@param result an object with text, tags and pos properties
+*/
+function sh_extractTagsFromNodeList(nodeList, result) {
+ var length = nodeList.length;
+ for (var i = 0; i < length; i++) {
+ var node = nodeList.item(i);
+ switch (node.nodeType) {
+ case 1:
+ if (node.nodeName.toLowerCase() === 'br') {
+ var terminator;
+ if (/MSIE/.test(navigator.userAgent)) {
+ terminator = '\r';
+ }
+ else {
+ terminator = '\n';
+ }
+ result.text.push(terminator);
+ result.pos++;
+ }
+ else {
+ result.tags.push({node: node.cloneNode(false), pos: result.pos});
+ sh_extractTagsFromNodeList(node.childNodes, result);
+ result.tags.push({pos: result.pos});
+ }
+ break;
+ case 3:
+ case 4:
+ result.text.push(node.data);
+ result.pos += node.length;
+ break;
+ }
+ }
+}
+
+/**
+Extracts the tags from the text of an HTML element. The extracted tags will be
+returned as an array of tag objects. See sh_highlightString for the format of
+the tag objects.
+@param element a DOM element
+@param tags an empty array; the extracted tag objects will be returned in it
+@return the text of the element
+@see sh_highlightString
+*/
+function sh_extractTags(element, tags) {
+ var result = {};
+ result.text = [];
+ result.tags = tags;
+ result.pos = 0;
+ sh_extractTagsFromNodeList(element.childNodes, result);
+ return result.text.join('');
+}
+
+/**
+Merges the original tags from an element with the tags produced by highlighting.
+@param originalTags an array containing the original tags
+@param highlightTags an array containing the highlighting tags - these must not overlap
+@result an array containing the merged tags
+*/
+function sh_mergeTags(originalTags, highlightTags) {
+ var numOriginalTags = originalTags.length;
+ if (numOriginalTags === 0) {
+ return highlightTags;
+ }
+
+ var numHighlightTags = highlightTags.length;
+ if (numHighlightTags === 0) {
+ return originalTags;
+ }
+
+ var result = [];
+ var originalIndex = 0;
+ var highlightIndex = 0;
+
+ while (originalIndex < numOriginalTags && highlightIndex < numHighlightTags) {
+ var originalTag = originalTags[originalIndex];
+ var highlightTag = highlightTags[highlightIndex];
+
+ if (originalTag.pos <= highlightTag.pos) {
+ result.push(originalTag);
+ originalIndex++;
+ }
+ else {
+ result.push(highlightTag);
+ if (highlightTags[highlightIndex + 1].pos <= originalTag.pos) {
+ highlightIndex++;
+ result.push(highlightTags[highlightIndex]);
+ highlightIndex++;
+ }
+ else {
+ // new end tag
+ result.push({pos: originalTag.pos});
+
+ // new start tag
+ highlightTags[highlightIndex] = {node: highlightTag.node.cloneNode(false), pos: originalTag.pos};
+ }
+ }
+ }
+
+ while (originalIndex < numOriginalTags) {
+ result.push(originalTags[originalIndex]);
+ originalIndex++;
+ }
+
+ while (highlightIndex < numHighlightTags) {
+ result.push(highlightTags[highlightIndex]);
+ highlightIndex++;
+ }
+
+ return result;
+}
+
+/**
+Inserts tags into text.
+@param tags an array of tag objects
+@param text a string representing the text
+@return a DOM DocumentFragment representing the resulting HTML
+*/
+function sh_insertTags(tags, text) {
+ var doc = document;
+
+ var result = document.createDocumentFragment();
+ var tagIndex = 0;
+ var numTags = tags.length;
+ var textPos = 0;
+ var textLength = text.length;
+ var currentNode = result;
+
+ // output one tag or text node every iteration
+ while (textPos < textLength || tagIndex < numTags) {
+ var tag;
+ var tagPos;
+ if (tagIndex < numTags) {
+ tag = tags[tagIndex];
+ tagPos = tag.pos;
+ }
+ else {
+ tagPos = textLength;
+ }
+
+ if (tagPos <= textPos) {
+ // output the tag
+ if (tag.node) {
+ // start tag
+ var newNode = tag.node;
+ currentNode.appendChild(newNode);
+ currentNode = newNode;
+ }
+ else {
+ // end tag
+ currentNode = currentNode.parentNode;
+ }
+ tagIndex++;
+ }
+ else {
+ // output text
+ currentNode.appendChild(doc.createTextNode(text.substring(textPos, tagPos)));
+ textPos = tagPos;
+ }
+ }
+
+ return result;
+}
+
+/**
+Highlights an element containing source code. Upon completion of this function,
+the element will have been placed in the "sh_sourceCode" class.
+@param element a DOM <pre> element containing the source code to be highlighted
+@param language a language definition object
+*/
+function sh_highlightElement(element, language) {
+ sh_addClass(element, 'sh_sourceCode');
+ var originalTags = [];
+ var inputString = sh_extractTags(element, originalTags);
+ var highlightTags = sh_highlightString(inputString, language);
+ var tags = sh_mergeTags(originalTags, highlightTags);
+ var documentFragment = sh_insertTags(tags, inputString);
+ while (element.hasChildNodes()) {
+ element.removeChild(element.firstChild);
+ }
+ element.appendChild(documentFragment);
+}
+
+function sh_getXMLHttpRequest() {
+ if (window.ActiveXObject) {
+ return new ActiveXObject('Msxml2.XMLHTTP');
+ }
+ else if (window.XMLHttpRequest) {
+ return new XMLHttpRequest();
+ }
+ throw 'No XMLHttpRequest implementation available';
+}
+
+function sh_load(language, element, prefix, suffix) {
+ if (language in sh_requests) {
+ sh_requests[language].push(element);
+ return;
+ }
+ sh_requests[language] = [element];
+ var request = sh_getXMLHttpRequest();
+ var url = prefix + 'sh_' + language + suffix;
+ request.open('GET', url, true);
+ request.onreadystatechange = function () {
+ if (request.readyState === 4) {
+ try {
+ if (! request.status || request.status === 200) {
+ eval(request.responseText);
+ var elements = sh_requests[language];
+ for (var i = 0; i < elements.length; i++) {
+ sh_highlightElement(elements[i], sh_languages[language]);
+ }
+ }
+ else {
+ throw 'HTTP error: status ' + request.status;
+ }
+ }
+ finally {
+ request = null;
+ }
+ }
+ };
+ request.send(null);
+}
+
+/**
+Highlights all elements containing source code on the current page. Elements
+containing source code must be "pre" elements with a "class" attribute of
+"sh_LANGUAGE", where LANGUAGE is a valid language identifier; e.g., "sh_java"
+identifies the element as containing "java" language source code.
+*/
+function highlight(prefix, suffix, tag) {
+ var nodeList = document.getElementsByTagName(tag);
+ for (var i = 0; i < nodeList.length; i++) {
+ var element = nodeList.item(i);
+ var htmlClasses = sh_getClasses(element);
+ var highlighted = false;
+ var donthighlight = false;
+ for (var j = 0; j < htmlClasses.length; j++) {
+ var htmlClass = htmlClasses[j].toLowerCase();
+ if (htmlClass === 'sh_none') {
+ donthighlight = true
+ continue;
+ }
+ if (htmlClass.substr(0, 3) === 'sh_') {
+ var language = htmlClass.substring(3);
+ if (language in sh_languages) {
+ sh_highlightElement(element, sh_languages[language]);
+ highlighted = true;
+ }
+ else if (typeof(prefix) === 'string' && typeof(suffix) === 'string') {
+ sh_load(language, element, prefix, suffix);
+ }
+ else {
+ throw 'Found <' + tag + '> element with class="' + htmlClass + '", but no such language exists';
+ }
+ break;
+ }
+ }
+ if (highlighted === false && donthighlight == false) {
+ sh_highlightElement(element, sh_languages["javascript"]);
+ }
+ }
+}
+
+
+
+function sh_highlightDocument(prefix, suffix) {
+ highlight(prefix, suffix, 'tt');
+ highlight(prefix, suffix, 'code');
+ highlight(prefix, suffix, 'pre');
+}
View
3  templates/footer.ejs
@@ -30,6 +30,9 @@
<small class="heart">npm loves you</small>
+<script src="/static/sh_main.js"></script>
+<script src="/static/sh_javascript.min.js"></script>
+<script>highlight(undefined, undefined, 'pre');</script>
<script>
window._gaq = [['_setAccount', 'UA-10874194-2'], ['_trackPageview']]
;(function(d, t) {
View
2  templates/header.ejs
@@ -8,6 +8,8 @@
href="/static/normalize.css">
<link type="text/css" rel="stylesheet" media="all"
href="/stylus/index.css">
+ <link type="text/css" rel="stylesheet" media="all"
+ href="/static/sh.css">
<script>(function(){
if (location.pathname === '/') {
var m = location.hash.match(/^#\/[^\/]*$/)
Something went wrong with that request. Please try again.