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@ -5,7 +5,7 @@ |
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* A dynamic, browser-based visualization library. |
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* A dynamic, browser-based visualization library. |
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* |
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* |
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* @version 0.0.8 |
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* @version 0.0.8 |
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* @date 2013-06-04 |
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* @date 2013-06-05 |
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* |
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* |
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* @license |
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* @license |
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* Copyright (C) 2011-2013 Almende B.V, http://almende.com
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* Copyright (C) 2011-2013 Almende B.V, http://almende.com
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@ -6806,453 +6806,542 @@ Timeline.prototype.getItemRange = function getItemRange() { |
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}; |
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}; |
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}; |
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}; |
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/** |
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* Parse a text source containing data in DOT language into a JSON object. |
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* The object contains two lists: one with nodes and one with edges. |
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* @param {String} data Text containing a graph in DOT-notation |
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* @return {Object} json An object containing two parameters: |
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* {Object[]} nodes |
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* {Object[]} edges |
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*/ |
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util.parseDOT = function (data) { |
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(function(exports) { |
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/** |
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/** |
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* Test whether given character is a whitespace character |
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* @param {String} c |
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* @return {Boolean} isWhitespace |
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* Parse a text source containing data in DOT language into a JSON object. |
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* The object contains two lists: one with nodes and one with edges. |
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* @param {String} data Text containing a graph in DOT-notation |
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* @return {Object} graph An object containing two parameters: |
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* {Object[]} nodes |
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* {Object[]} edges |
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*/ |
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*/ |
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function isWhitespace(c) { |
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return c == ' ' || c == '\t' || c == '\n' || c == '\r'; |
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} |
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function parseDOT (data) { |
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dot = data; |
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return parseGraph(); |
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} |
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// token types enumeration
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var TOKENTYPE = { |
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NULL : 0, |
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DELIMITER : 1, |
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NUMBER : 2, |
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STRING : 3, |
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UNKNOWN : 4 |
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}; |
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/** |
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* Test whether given character is a delimeter |
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* @param {String} c |
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* @return {Boolean} isDelimeter |
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*/ |
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function isDelimeter(c) { |
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return '[]{}();,=->'.indexOf(c) != -1; |
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} |
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// map with all delimiters
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var DELIMITERS = { |
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'{': true, |
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'}': true, |
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'[': true, |
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']': true, |
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';': true, |
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'=': true, |
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',': true, |
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'->': true, |
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'--': true |
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}; |
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var i = -1; // current index in the data
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var c = ''; // current character in the data
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var dot = ''; // current dot file
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var index = 0; // current index in dot file
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var c = ''; // current token character in expr
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var token = ''; // current token
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var tokenType = TOKENTYPE.NULL; // type of the token
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var graph = null; // object with the graph to be build
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var nodeAttr = null; // global node attributes
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var edgeAttr = null; // global edge attributes
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/** |
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/** |
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* Read the next character from the data |
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* Get the first character from the dot file. |
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* The character is stored into the char c. If the end of the dot file is |
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* reached, the function puts an empty string in c. |
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*/ |
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*/ |
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function next() { |
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i++; |
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c = data[i]; |
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function first() { |
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index = 0; |
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c = dot.charAt(0); |
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} |
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} |
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/** |
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/** |
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* Preview the next character in the data |
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* @returns {String} nextChar |
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* Get the next character from the dot file. |
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* The character is stored into the char c. If the end of the dot file is |
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* reached, the function puts an empty string in c. |
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*/ |
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*/ |
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function previewNext () { |
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return data[i + 1]; |
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function next() { |
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index++; |
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c = dot.charAt(index); |
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} |
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} |
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/** |
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/** |
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* Preview the next character in the data |
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* @returns {String} nextChar |
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* Preview the next character from the dot file. |
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* @return {String} cNext |
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*/ |
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*/ |
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function previewPrevious () { |
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return data[i + 1]; |
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function nextPreview() { |
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return dot.charAt(index + 1); |
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} |
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} |
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/** |
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/** |
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* Get a text description of the the current index in the data |
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* @return {String} desc |
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* Test whether given character is alphabetic or numeric |
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* @param {String} c |
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* @return {Boolean} isAlphaNumeric |
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*/ |
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*/ |
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function pos() { |
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return '(char ' + i + ')'; |
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var regexAlphaNumeric = /[a-zA-Z_0-9.#]/; |
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function isAlphaNumeric(c) { |
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return regexAlphaNumeric.test(c); |
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} |
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} |
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/** |
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/** |
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* Skip whitespace and comments |
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* Merge all properties of object b into object b |
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* @param {Object} a |
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* @param {Object} b |
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* @return {Object} a |
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*/ |
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*/ |
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function parseWhitespace() { |
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// skip whitespace
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while (c && isWhitespace(c)) { |
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next(); |
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function merge (a, b) { |
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if (!a) { |
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a = {}; |
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} |
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} |
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// test for comment
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var cNext = data[i + 1]; |
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var cPrev = data[i - 1]; |
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var c2 = c + cNext; |
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if (c2 == '/*') { |
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// block comment. skip until the block is closed
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while (c && !(c == '*' && data[i + 1] == '/')) { |
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next(); |
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} |
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next(); |
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next(); |
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parseWhitespace(); |
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} |
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else if (c2 == '//' || (c == '#' && cPrev == '\n')) { |
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// line comment. skip until the next return
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while (c && c != '\n') { |
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next(); |
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if (b) { |
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for (var name in b) { |
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if (b.hasOwnProperty(name)) { |
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a[name] = b[name]; |
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} |
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} |
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} |
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next(); |
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parseWhitespace(); |
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} |
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} |
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return a; |
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} |
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} |
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/** |
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/** |
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* Parse a string |
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* The string may be enclosed by double quotes |
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* @return {String | undefined} value |
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* Add a node to the current graph object. If there is already a node with |
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* the same id, their attributes will be merged. |
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* @param {Object} node |
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*/ |
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*/ |
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function parseString() { |
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parseWhitespace(); |
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var name = ''; |
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if (c == '"') { |
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next(); |
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while (c && c != '"') { |
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name += c; |
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next(); |
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function addNode(node) { |
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if (!graph.nodes) { |
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graph.nodes = {}; |
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} |
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var current = graph.nodes[node.id]; |
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if (current) { |
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// merge attributes
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if (node.attr) { |
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current.attr = merge(current.attr, node.attr); |
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} |
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} |
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next(); // skip the closing quote
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} |
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} |
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else { |
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else { |
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while (c && !isWhitespace(c) && !isDelimeter(c)) { |
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name += c; |
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next(); |
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} |
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// cast string to number or boolean
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if (name.length) { |
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var number = Number(name); |
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if (!isNaN(number)) { |
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name = number; |
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} |
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else if (name == 'true') { |
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name = true; |
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} |
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else if (name == 'false') { |
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name = false; |
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} |
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else if (name == 'null') { |
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name = null; |
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} |
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// add
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graph.nodes[node.id] = node; |
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if (nodeAttr) { |
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node.attr = merge(node.attr, nodeAttr); |
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} |
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} |
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} |
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} |
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return name; |
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} |
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} |
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/** |
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/** |
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* Parse a value, can be a string, number, or boolean. |
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* The value may be enclosed by double quotes |
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* @return {String | Number | Boolean | undefined} value |
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* Add an edge to the current graph obect |
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* @param {Object} edge |
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*/ |
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*/ |
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function parseValue() { |
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parseWhitespace(); |
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if (c == '"') { |
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return parseString(); |
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function addEdge(edge) { |
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if (!graph.edges) { |
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graph.edges = []; |
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} |
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} |
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else { |
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var value = parseString(); |
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if (value != undefined) { |
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// cast string to number or boolean
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var number = Number(value); |
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if (!isNaN(number)) { |
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value = number; |
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} |
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else if (value == 'true') { |
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value = true; |
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} |
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else if (value == 'false') { |
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value = false; |
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} |
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else if (value == 'null') { |
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value = null; |
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} |
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} |
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return value; |
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graph.edges.push(edge); |
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if (edgeAttr) { |
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edge.attr = merge(edge.attr, edgeAttr); |
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} |
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} |
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} |
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} |
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/** |
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/** |
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* Parse a set with attributes, |
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* for example [label="1.000", shape=solid] |
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* @return {Object | undefined} attr |
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* Get next token in the current dot file. |
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* The token and token type are available as token and tokenType |
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*/ |
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*/ |
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function parseAttributes() { |
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parseWhitespace(); |
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function getToken() { |
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tokenType = TOKENTYPE.NULL; |
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token = ''; |
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if (c == '[') { |
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// skip over whitespaces
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while (c == ' ' || c == '\t' || c == '\n') { // space, tab, enter
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next(); |
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next(); |
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var attr = {}; |
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while (c && c != ']') { |
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parseWhitespace(); |
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var name = parseString(); |
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if (!name) { |
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throw new SyntaxError('Attribute name expected ' + pos()); |
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} |
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} |
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parseWhitespace(); |
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if (c != '=') { |
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throw new SyntaxError('Equal sign = expected ' + pos()); |
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do { |
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var isComment = false; |
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// skip comment
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if (c == '#') { |
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// find the previous non-space character
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var i = index - 1; |
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while (dot[i] == ' ' || dot[i] == '\t') { |
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i--; |
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} |
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} |
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next(); |
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var value = parseValue(); |
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if (!value) { |
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throw new SyntaxError('Attribute value expected ' + pos()); |
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if (dot[i] == '\n' || dot[i] == '') { |
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// the # is at the start of a line, this is indeed a line comment
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while (c != '' && c != '\n') { |
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|
next(); |
|
|
|
|
|
} |
|
|
|
|
|
isComment = true; |
|
|
} |
|
|
} |
|
|
attr[name] = value; |
|
|
|
|
|
|
|
|
|
|
|
parseWhitespace(); |
|
|
|
|
|
|
|
|
|
|
|
if (c ==',') { |
|
|
|
|
|
|
|
|
} |
|
|
|
|
|
if (c == '/' && nextPreview() == '/') { |
|
|
|
|
|
// skip line comment
|
|
|
|
|
|
while (c != '' && c != '\n') { |
|
|
next(); |
|
|
next(); |
|
|
} |
|
|
} |
|
|
|
|
|
isComment = true; |
|
|
|
|
|
} |
|
|
|
|
|
if (c == '/' && nextPreview() == '*') { |
|
|
|
|
|
// skip block comment
|
|
|
|
|
|
while (c != '') { |
|
|
|
|
|
if (c == '*' && nextPreview() == '/') { |
|
|
|
|
|
// end of block comment found. skip these last two characters
|
|
|
|
|
|
next(); |
|
|
|
|
|
next(); |
|
|
|
|
|
break; |
|
|
|
|
|
} |
|
|
|
|
|
else { |
|
|
|
|
|
next(); |
|
|
|
|
|
} |
|
|
|
|
|
isComment = true; |
|
|
|
|
|
} |
|
|
} |
|
|
} |
|
|
next(); |
|
|
|
|
|
|
|
|
|
|
|
return attr; |
|
|
|
|
|
|
|
|
// skip over whitespaces
|
|
|
|
|
|
while (c == ' ' || c == '\t' || c == '\n') { // space, tab, enter
|
|
|
|
|
|
next(); |
|
|
|
|
|
} |
|
|
} |
|
|
} |
|
|
else { |
|
|
|
|
|
return undefined; |
|
|
|
|
|
|
|
|
while (isComment); |
|
|
|
|
|
|
|
|
|
|
|
// check for end of dot file
|
|
|
|
|
|
if (c == '') { |
|
|
|
|
|
// token is still empty
|
|
|
|
|
|
tokenType = TOKENTYPE.DELIMITER; |
|
|
|
|
|
return; |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
|
* Parse a directed or undirected arrow '->' or '--' |
|
|
|
|
|
* @return {String | undefined} arrow |
|
|
|
|
|
*/ |
|
|
|
|
|
function parseArrow() { |
|
|
|
|
|
parseWhitespace(); |
|
|
|
|
|
|
|
|
// check for delimiters consisting of 2 characters
|
|
|
|
|
|
var c2 = c + nextPreview(); |
|
|
|
|
|
if (DELIMITERS[c2]) { |
|
|
|
|
|
tokenType = TOKENTYPE.DELIMITER; |
|
|
|
|
|
token = c2; |
|
|
|
|
|
next(); |
|
|
|
|
|
next(); |
|
|
|
|
|
return; |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
// check for delimiters consisting of 1 character
|
|
|
|
|
|
if (DELIMITERS[c]) { |
|
|
|
|
|
tokenType = TOKENTYPE.DELIMITER; |
|
|
|
|
|
token = c; |
|
|
|
|
|
next(); |
|
|
|
|
|
return; |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
if (c == '-') { |
|
|
|
|
|
|
|
|
// check for an identifier (number or string)
|
|
|
|
|
|
// TODO: more precise parsing of numbers/strings
|
|
|
|
|
|
if (isAlphaNumeric(c) || c == '-') { |
|
|
|
|
|
token += c; |
|
|
next(); |
|
|
next(); |
|
|
if (c == '>' || c == '-') { |
|
|
|
|
|
var arrow = '-' + c; |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
while (isAlphaNumeric(c)) { |
|
|
|
|
|
token += c; |
|
|
next(); |
|
|
next(); |
|
|
return arrow; |
|
|
|
|
|
|
|
|
} |
|
|
|
|
|
if (!isNaN(Number(token))) { |
|
|
|
|
|
token = Number(token); |
|
|
|
|
|
tokenType = TOKENTYPE.NUMBER; |
|
|
} |
|
|
} |
|
|
else { |
|
|
else { |
|
|
throw new SyntaxError('Arrow "->" or "--" expected ' + pos()); |
|
|
|
|
|
|
|
|
tokenType = TOKENTYPE.STRING; |
|
|
} |
|
|
} |
|
|
|
|
|
return; |
|
|
} |
|
|
} |
|
|
|
|
|
|
|
|
return undefined; |
|
|
|
|
|
|
|
|
// check for a string
|
|
|
|
|
|
if (c == '"') { |
|
|
|
|
|
next(); |
|
|
|
|
|
while (c != '' && (c != '"' || (c == '"' && nextPreview() == '"'))) { |
|
|
|
|
|
token += c; |
|
|
|
|
|
if (c == '"') { // skip the escape character
|
|
|
|
|
|
next(); |
|
|
|
|
|
} |
|
|
|
|
|
next(); |
|
|
|
|
|
} |
|
|
|
|
|
if (c != '"') { |
|
|
|
|
|
throw newSyntaxError('End of string " expected'); |
|
|
|
|
|
} |
|
|
|
|
|
next(); |
|
|
|
|
|
tokenType = TOKENTYPE.STRING; |
|
|
|
|
|
return; |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
// something unknown is found, wrong characters, a syntax error
|
|
|
|
|
|
tokenType = TOKENTYPE.UNKNOWN; |
|
|
|
|
|
while (c != '') { |
|
|
|
|
|
token += c; |
|
|
|
|
|
next(); |
|
|
|
|
|
} |
|
|
|
|
|
throw new SyntaxError('Syntax error in part "' + token + '"'); |
|
|
} |
|
|
} |
|
|
|
|
|
|
|
|
/** |
|
|
/** |
|
|
* Parse a line separator ';' |
|
|
|
|
|
* @return {String | undefined} separator |
|
|
|
|
|
|
|
|
* Parse a graph. |
|
|
|
|
|
* @returns {Object} graph |
|
|
*/ |
|
|
*/ |
|
|
function parseSeparator() { |
|
|
|
|
|
parseWhitespace(); |
|
|
|
|
|
|
|
|
function parseGraph() { |
|
|
|
|
|
graph = {}; |
|
|
|
|
|
nodeAttr = null; |
|
|
|
|
|
edgeAttr = null; |
|
|
|
|
|
|
|
|
if (c == ';') { |
|
|
|
|
|
next(); |
|
|
|
|
|
return ';'; |
|
|
|
|
|
|
|
|
first(); |
|
|
|
|
|
getToken(); |
|
|
|
|
|
|
|
|
|
|
|
// optional strict keyword
|
|
|
|
|
|
if (token == 'strict') { |
|
|
|
|
|
graph.strict = true; |
|
|
|
|
|
getToken(); |
|
|
} |
|
|
} |
|
|
|
|
|
|
|
|
return undefined; |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
// graph or digraph keyword
|
|
|
|
|
|
if (token == 'graph' || token == 'digraph') { |
|
|
|
|
|
graph.type = token; |
|
|
|
|
|
getToken(); |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
/** |
|
|
|
|
|
* Merge all properties of object b into object b |
|
|
|
|
|
* @param {Object} a |
|
|
|
|
|
* @param {Object} b |
|
|
|
|
|
*/ |
|
|
|
|
|
function merge (a, b) { |
|
|
|
|
|
if (a && b) { |
|
|
|
|
|
for (var name in b) { |
|
|
|
|
|
if (b.hasOwnProperty(name)) { |
|
|
|
|
|
a[name] = b[name]; |
|
|
|
|
|
} |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
// graph id
|
|
|
|
|
|
if (tokenType == TOKENTYPE.STRING) { |
|
|
|
|
|
graph.id = token; |
|
|
|
|
|
getToken(); |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
var nodeMap = {}; |
|
|
|
|
|
var edgeList = []; |
|
|
|
|
|
|
|
|
// open angle bracket
|
|
|
|
|
|
if (token != '{') { |
|
|
|
|
|
throw newSyntaxError('Angle bracket { expected'); |
|
|
|
|
|
} |
|
|
|
|
|
getToken(); |
|
|
|
|
|
|
|
|
/** |
|
|
|
|
|
* Register a node with attributes |
|
|
|
|
|
* @param {String} id |
|
|
|
|
|
* @param {Object} [attr] |
|
|
|
|
|
*/ |
|
|
|
|
|
function addNode(id, attr) { |
|
|
|
|
|
var node = { |
|
|
|
|
|
id: String(id), |
|
|
|
|
|
attr: attr || {} |
|
|
|
|
|
}; |
|
|
|
|
|
if (!nodeMap[id]) { |
|
|
|
|
|
nodeMap[id] = node; |
|
|
|
|
|
|
|
|
// statements
|
|
|
|
|
|
parseStatements(); |
|
|
|
|
|
|
|
|
|
|
|
// close angle bracket
|
|
|
|
|
|
if (token != '}') { |
|
|
|
|
|
throw newSyntaxError('Angle bracket } expected'); |
|
|
} |
|
|
} |
|
|
else { |
|
|
|
|
|
merge(nodeMap[id].attr, node.attr); |
|
|
|
|
|
|
|
|
getToken(); |
|
|
|
|
|
|
|
|
|
|
|
// end of file
|
|
|
|
|
|
if (token !== '') { |
|
|
|
|
|
throw newSyntaxError('End of file expected'); |
|
|
} |
|
|
} |
|
|
|
|
|
getToken(); |
|
|
|
|
|
|
|
|
|
|
|
return graph; |
|
|
} |
|
|
} |
|
|
|
|
|
|
|
|
/** |
|
|
/** |
|
|
* Register an edge |
|
|
|
|
|
* @param {String} from |
|
|
|
|
|
* @param {String} to |
|
|
|
|
|
* @param {String} type A string "->" or "--" |
|
|
|
|
|
* @param {Object} [attr] |
|
|
|
|
|
|
|
|
* Parse a list with statements. |
|
|
*/ |
|
|
*/ |
|
|
function addEdge(from, to, type, attr) { |
|
|
|
|
|
edgeList.push({ |
|
|
|
|
|
from: String(from), |
|
|
|
|
|
to: String(to), |
|
|
|
|
|
type: type, |
|
|
|
|
|
attr: attr || {} |
|
|
|
|
|
}); |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
function parseStatements () { |
|
|
|
|
|
while (token !== '' && token != '}') { |
|
|
|
|
|
if (tokenType != TOKENTYPE.STRING && tokenType != TOKENTYPE.NUMBER) { |
|
|
|
|
|
throw newSyntaxError('String expected'); |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
// find the opening curly bracket
|
|
|
|
|
|
next(); |
|
|
|
|
|
while (c && c != '{') { |
|
|
|
|
|
next(); |
|
|
|
|
|
} |
|
|
|
|
|
if (c != '{') { |
|
|
|
|
|
throw new SyntaxError('Invalid data. Curly bracket { expected ' + pos()) |
|
|
|
|
|
|
|
|
parseStatement(); |
|
|
|
|
|
if (token == ';') { |
|
|
|
|
|
getToken(); |
|
|
|
|
|
} |
|
|
|
|
|
} |
|
|
} |
|
|
} |
|
|
next(); |
|
|
|
|
|
|
|
|
|
|
|
// parse all data until a closing curly bracket is encountered
|
|
|
|
|
|
while (c && c != '}') { |
|
|
|
|
|
// parse node id and optional node attributes
|
|
|
|
|
|
var id = parseString(); |
|
|
|
|
|
if (id == undefined || id === '') { |
|
|
|
|
|
throw new SyntaxError('String with id expected ' + pos()); |
|
|
|
|
|
|
|
|
/** |
|
|
|
|
|
* Parse a single statement. Can be a an attribute statement, node |
|
|
|
|
|
* statement, a series of node statements and edge statements, or a |
|
|
|
|
|
* parameter. |
|
|
|
|
|
*/ |
|
|
|
|
|
function parseStatement() { |
|
|
|
|
|
var attr; |
|
|
|
|
|
var id = token; // can be as string or a number
|
|
|
|
|
|
getToken(); |
|
|
|
|
|
|
|
|
|
|
|
// attribute statements
|
|
|
|
|
|
if (id == 'node') { |
|
|
|
|
|
// node attributes
|
|
|
|
|
|
attr = parseAttributes(); |
|
|
|
|
|
if (attr) { |
|
|
|
|
|
nodeAttr = merge(nodeAttr, attr); |
|
|
|
|
|
} |
|
|
} |
|
|
} |
|
|
var attr = parseAttributes(); |
|
|
|
|
|
addNode(id, attr); |
|
|
|
|
|
|
|
|
|
|
|
// TODO: parse global attributes
|
|
|
|
|
|
// TODO: parse global attributes "graph", "node", "edge"
|
|
|
|
|
|
|
|
|
|
|
|
// parse arrow
|
|
|
|
|
|
var type = parseArrow(); |
|
|
|
|
|
while (type) { |
|
|
|
|
|
// parse node id
|
|
|
|
|
|
var prevId = id; |
|
|
|
|
|
id = parseString(); |
|
|
|
|
|
if (id == undefined) { |
|
|
|
|
|
throw new SyntaxError('String with id expected ' + pos()); |
|
|
|
|
|
|
|
|
else if (id == 'edge') { |
|
|
|
|
|
// edge attributes
|
|
|
|
|
|
attr = parseAttributes(); |
|
|
|
|
|
if (attr) { |
|
|
|
|
|
edgeAttr = merge(edgeAttr, attr); |
|
|
} |
|
|
} |
|
|
addNode(id); |
|
|
|
|
|
|
|
|
|
|
|
// parse edge attributes and register edge
|
|
|
|
|
|
|
|
|
} |
|
|
|
|
|
else if (id == 'graph') { |
|
|
|
|
|
// graph attributes
|
|
|
attr = parseAttributes(); |
|
|
attr = parseAttributes(); |
|
|
addEdge(prevId, id, type, attr); |
|
|
|
|
|
|
|
|
if (attr) { |
|
|
|
|
|
graph.attr = merge(graph.attr, attr); |
|
|
|
|
|
} |
|
|
|
|
|
} |
|
|
|
|
|
else { |
|
|
|
|
|
if (token == '=') { |
|
|
|
|
|
// id statement
|
|
|
|
|
|
getToken(); |
|
|
|
|
|
if (!graph.attr) { |
|
|
|
|
|
graph.attr = {}; |
|
|
|
|
|
} |
|
|
|
|
|
graph.attr[id] = token; |
|
|
|
|
|
getToken(); |
|
|
|
|
|
} |
|
|
|
|
|
else { |
|
|
|
|
|
// node statement
|
|
|
|
|
|
var node = { |
|
|
|
|
|
id: String(id) |
|
|
|
|
|
}; |
|
|
|
|
|
attr = parseAttributes(); |
|
|
|
|
|
if (attr) { |
|
|
|
|
|
node.attr = attr; |
|
|
|
|
|
} |
|
|
|
|
|
addNode(node); |
|
|
|
|
|
|
|
|
|
|
|
// edge statements
|
|
|
|
|
|
var from = id; |
|
|
|
|
|
while (token == '->' || token == '--') { |
|
|
|
|
|
var type = token; |
|
|
|
|
|
getToken(); |
|
|
|
|
|
|
|
|
|
|
|
var to = token; |
|
|
|
|
|
addNode({ |
|
|
|
|
|
id: String(to) |
|
|
|
|
|
}); |
|
|
|
|
|
getToken(); |
|
|
|
|
|
attr = parseAttributes(); |
|
|
|
|
|
|
|
|
|
|
|
// create edge
|
|
|
|
|
|
var edge = { |
|
|
|
|
|
from: String(from), |
|
|
|
|
|
to: String(to), |
|
|
|
|
|
type: type |
|
|
|
|
|
}; |
|
|
|
|
|
if (attr) { |
|
|
|
|
|
edge.attr = attr; |
|
|
|
|
|
} |
|
|
|
|
|
addEdge(edge); |
|
|
|
|
|
|
|
|
// parse next arrow (optional)
|
|
|
|
|
|
type = parseArrow(); |
|
|
|
|
|
|
|
|
from = to; |
|
|
|
|
|
} |
|
|
|
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
// parse separator (optional)
|
|
|
|
|
|
parseSeparator(); |
|
|
|
|
|
|
|
|
/** |
|
|
|
|
|
* Parse a set with attributes, |
|
|
|
|
|
* for example [label="1.000", shape=solid] |
|
|
|
|
|
* @return {Object | undefined} attr |
|
|
|
|
|
*/ |
|
|
|
|
|
function parseAttributes() { |
|
|
|
|
|
if (token == '[') { |
|
|
|
|
|
getToken(); |
|
|
|
|
|
var attr = {}; |
|
|
|
|
|
while (token !== '' && token != ']') { |
|
|
|
|
|
if (tokenType != TOKENTYPE.STRING) { |
|
|
|
|
|
throw newSyntaxError('Attribute name expected'); |
|
|
|
|
|
} |
|
|
|
|
|
var name = token; |
|
|
|
|
|
|
|
|
parseWhitespace(); |
|
|
|
|
|
} |
|
|
|
|
|
if (c != '}') { |
|
|
|
|
|
throw new SyntaxError('Invalid data. Curly bracket } expected'); |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
getToken(); |
|
|
|
|
|
if (token != '=') { |
|
|
|
|
|
throw newSyntaxError('Equal sign = expected'); |
|
|
|
|
|
} |
|
|
|
|
|
getToken(); |
|
|
|
|
|
|
|
|
// crop data between the curly brackets
|
|
|
|
|
|
var start = data.indexOf('{'); |
|
|
|
|
|
var end = data.indexOf('}', start); |
|
|
|
|
|
var text = (start != -1 && end != -1) ? data.substring(start + 1, end) : undefined; |
|
|
|
|
|
|
|
|
if (tokenType != TOKENTYPE.STRING && tokenType != TOKENTYPE.NUMBER) { |
|
|
|
|
|
throw newSyntaxError('Attribute value expected'); |
|
|
|
|
|
} |
|
|
|
|
|
var value = token; |
|
|
|
|
|
attr[name] = value; |
|
|
|
|
|
|
|
|
if (!text) { |
|
|
|
|
|
throw new Error('Invalid data. no curly brackets containing data found'); |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
getToken(); |
|
|
|
|
|
if (token ==',') { |
|
|
|
|
|
getToken(); |
|
|
|
|
|
} |
|
|
|
|
|
} |
|
|
|
|
|
getToken(); |
|
|
|
|
|
|
|
|
// return the results
|
|
|
|
|
|
var nodeList = []; |
|
|
|
|
|
for (id in nodeMap) { |
|
|
|
|
|
if (nodeMap.hasOwnProperty(id)) { |
|
|
|
|
|
nodeList.push(nodeMap[id]); |
|
|
|
|
|
|
|
|
return attr; |
|
|
|
|
|
} |
|
|
|
|
|
else { |
|
|
|
|
|
return undefined; |
|
|
} |
|
|
} |
|
|
} |
|
|
} |
|
|
return { |
|
|
|
|
|
nodes: nodeList, |
|
|
|
|
|
edges: edgeList |
|
|
|
|
|
} |
|
|
|
|
|
}; |
|
|
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
|
* Convert a string containing a graph in DOT language into a map containing |
|
|
|
|
|
* with nodes and edges in the format of graph. |
|
|
|
|
|
* @param {String} data Text containing a graph in DOT-notation |
|
|
|
|
|
* @return {Object} graphData |
|
|
|
|
|
*/ |
|
|
|
|
|
util.DOTToGraph = function (data) { |
|
|
|
|
|
// parse the DOT file
|
|
|
|
|
|
var dotData = util.parseDOT(data); |
|
|
|
|
|
var graphData = { |
|
|
|
|
|
nodes: [], |
|
|
|
|
|
edges: [], |
|
|
|
|
|
options: { |
|
|
|
|
|
nodes: {}, |
|
|
|
|
|
edges: {} |
|
|
|
|
|
} |
|
|
|
|
|
}; |
|
|
|
|
|
|
|
|
/** |
|
|
|
|
|
* Create a syntax error with extra information on current token and index. |
|
|
|
|
|
* @param {String} message |
|
|
|
|
|
* @returns {SyntaxError} err |
|
|
|
|
|
*/ |
|
|
|
|
|
function newSyntaxError(message) { |
|
|
|
|
|
return new SyntaxError(message + ', got "' + token + '" (char ' + index + ')'); |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
/** |
|
|
/** |
|
|
* Merge the properties of object b into object a, and replace non-supported |
|
|
|
|
|
* attributes with supported properties. |
|
|
|
|
|
* @param {Object} a |
|
|
|
|
|
* @param {Object} b |
|
|
|
|
|
* @param {Array} [ignore] Optional array with property names to be ignored |
|
|
|
|
|
|
|
|
* Convert a string containing a graph in DOT language into a map containing |
|
|
|
|
|
* with nodes and edges in the format of graph. |
|
|
|
|
|
* @param {String} data Text containing a graph in DOT-notation |
|
|
|
|
|
* @return {Object} graphData |
|
|
*/ |
|
|
*/ |
|
|
function merge (a, b, ignore) { |
|
|
|
|
|
for (var prop in b) { |
|
|
|
|
|
if (b.hasOwnProperty(prop) && (!ignore || ignore.indexOf(prop) == -1)) { |
|
|
|
|
|
a[prop] = b[prop]; |
|
|
|
|
|
|
|
|
function DOTToGraph (data) { |
|
|
|
|
|
// parse the DOT file
|
|
|
|
|
|
var dotData = parseDOT(data); |
|
|
|
|
|
var graphData = { |
|
|
|
|
|
nodes: [], |
|
|
|
|
|
edges: [], |
|
|
|
|
|
options: {} |
|
|
|
|
|
}; |
|
|
|
|
|
|
|
|
|
|
|
// copy the nodes
|
|
|
|
|
|
if (dotData.nodes) { |
|
|
|
|
|
for (var id in dotData.nodes) { |
|
|
|
|
|
if (dotData.nodes.hasOwnProperty(id)) { |
|
|
|
|
|
var node = { |
|
|
|
|
|
id: id, |
|
|
|
|
|
label: id |
|
|
|
|
|
}; |
|
|
|
|
|
merge(node, dotData.nodes[id].attr); |
|
|
|
|
|
graphData.nodes.push(node); |
|
|
|
|
|
} |
|
|
} |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
|
|
|
// TODO: Convert non supported attributes to properties supported by Graph
|
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
dotData.nodes.forEach(function (node) { |
|
|
|
|
|
if (node.id.toLowerCase() == 'graph') { |
|
|
|
|
|
merge(graphData.options, node.attr); |
|
|
|
|
|
|
|
|
// copy the edges
|
|
|
|
|
|
if (dotData.edges) { |
|
|
|
|
|
dotData.edges.forEach(function (dotEdge) { |
|
|
|
|
|
var graphEdge = { |
|
|
|
|
|
from: dotEdge.from, |
|
|
|
|
|
to: dotEdge.to |
|
|
|
|
|
}; |
|
|
|
|
|
merge(graphEdge, dotEdge.attr); |
|
|
|
|
|
graphEdge.style = (dotEdge.type == '->') ? 'arrow-end' : 'line'; |
|
|
|
|
|
graphData.edges.push(graphEdge); |
|
|
|
|
|
}); |
|
|
} |
|
|
} |
|
|
else if (node.id.toLowerCase() == 'node') { |
|
|
|
|
|
merge(graphData.options.nodes, node.attr); |
|
|
|
|
|
} |
|
|
|
|
|
else if (node.id.toLowerCase() == 'edge') { |
|
|
|
|
|
merge(graphData.options.edges, node.attr); |
|
|
|
|
|
} |
|
|
|
|
|
else { |
|
|
|
|
|
var graphNode = {}; |
|
|
|
|
|
graphNode.id = node.id; |
|
|
|
|
|
graphNode.label = node.id; |
|
|
|
|
|
merge(graphNode, node.attr); |
|
|
|
|
|
graphData.nodes.push(graphNode); |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// copy the options
|
|
|
|
|
|
if (dotData.attr) { |
|
|
|
|
|
graphData.options = dotData.attr; |
|
|
} |
|
|
} |
|
|
}); |
|
|
|
|
|
|
|
|
|
|
|
dotData.edges.forEach(function (edge) { |
|
|
|
|
|
var graphEdge = {}; |
|
|
|
|
|
graphEdge.from = edge.from; |
|
|
|
|
|
graphEdge.to = edge.to; |
|
|
|
|
|
graphEdge.label = edge.id; |
|
|
|
|
|
graphEdge.style = (edge.type == '->') ? 'arrow-end' : 'line'; |
|
|
|
|
|
merge(graphEdge, edge.attr); |
|
|
|
|
|
graphData.edges.push(graphEdge); |
|
|
|
|
|
}); |
|
|
|
|
|
|
|
|
return graphData; |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
return graphData; |
|
|
|
|
|
}; |
|
|
|
|
|
|
|
|
// exports
|
|
|
|
|
|
exports.parseDOT = parseDOT; |
|
|
|
|
|
exports.DOTToGraph = DOTToGraph; |
|
|
|
|
|
|
|
|
|
|
|
})(typeof util !== 'undefined' ? util : exports); |
|
|
|
|
|
|
|
|
/** |
|
|
/** |
|
|
* Canvas shapes used by the Graph |
|
|
* Canvas shapes used by the Graph |
|
|