| var zrUtil = require("zrender/lib/core/util"); |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| // GEXF File Parser |
| // http://gexf.net/1.2draft/gexf-12draft-primer.pdf |
| function parse(xml) { |
| var doc; |
| |
| if (typeof xml === 'string') { |
| var parser = new DOMParser(); |
| doc = parser.parseFromString(xml, 'text/xml'); |
| } else { |
| doc = xml; |
| } |
| |
| if (!doc || doc.getElementsByTagName('parsererror').length) { |
| return null; |
| } |
| |
| var gexfRoot = getChildByTagName(doc, 'gexf'); |
| |
| if (!gexfRoot) { |
| return null; |
| } |
| |
| var graphRoot = getChildByTagName(gexfRoot, 'graph'); |
| var attributes = parseAttributes(getChildByTagName(graphRoot, 'attributes')); |
| var attributesMap = {}; |
| |
| for (var i = 0; i < attributes.length; i++) { |
| attributesMap[attributes[i].id] = attributes[i]; |
| } |
| |
| return { |
| nodes: parseNodes(getChildByTagName(graphRoot, 'nodes'), attributesMap), |
| links: parseEdges(getChildByTagName(graphRoot, 'edges')) |
| }; |
| } |
| |
| function parseAttributes(parent) { |
| return parent ? zrUtil.map(getChildrenByTagName(parent, 'attribute'), function (attribDom) { |
| return { |
| id: getAttr(attribDom, 'id'), |
| title: getAttr(attribDom, 'title'), |
| type: getAttr(attribDom, 'type') |
| }; |
| }) : []; |
| } |
| |
| function parseNodes(parent, attributesMap) { |
| return parent ? zrUtil.map(getChildrenByTagName(parent, 'node'), function (nodeDom) { |
| var id = getAttr(nodeDom, 'id'); |
| var label = getAttr(nodeDom, 'label'); |
| var node = { |
| id: id, |
| name: label, |
| itemStyle: { |
| normal: {} |
| } |
| }; |
| var vizSizeDom = getChildByTagName(nodeDom, 'viz:size'); |
| var vizPosDom = getChildByTagName(nodeDom, 'viz:position'); |
| var vizColorDom = getChildByTagName(nodeDom, 'viz:color'); // var vizShapeDom = getChildByTagName(nodeDom, 'viz:shape'); |
| |
| var attvaluesDom = getChildByTagName(nodeDom, 'attvalues'); |
| |
| if (vizSizeDom) { |
| node.symbolSize = parseFloat(getAttr(vizSizeDom, 'value')); |
| } |
| |
| if (vizPosDom) { |
| node.x = parseFloat(getAttr(vizPosDom, 'x')); |
| node.y = parseFloat(getAttr(vizPosDom, 'y')); // z |
| } |
| |
| if (vizColorDom) { |
| node.itemStyle.normal.color = 'rgb(' + [getAttr(vizColorDom, 'r') | 0, getAttr(vizColorDom, 'g') | 0, getAttr(vizColorDom, 'b') | 0].join(',') + ')'; |
| } // if (vizShapeDom) { |
| // node.shape = getAttr(vizShapeDom, 'shape'); |
| // } |
| |
| |
| if (attvaluesDom) { |
| var attvalueDomList = getChildrenByTagName(attvaluesDom, 'attvalue'); |
| node.attributes = {}; |
| |
| for (var j = 0; j < attvalueDomList.length; j++) { |
| var attvalueDom = attvalueDomList[j]; |
| var attId = getAttr(attvalueDom, 'for'); |
| var attValue = getAttr(attvalueDom, 'value'); |
| var attribute = attributesMap[attId]; |
| |
| if (attribute) { |
| switch (attribute.type) { |
| case 'integer': |
| case 'long': |
| attValue = parseInt(attValue, 10); |
| break; |
| |
| case 'float': |
| case 'double': |
| attValue = parseFloat(attValue); |
| break; |
| |
| case 'boolean': |
| attValue = attValue.toLowerCase() == 'true'; |
| break; |
| |
| default: |
| } |
| |
| node.attributes[attId] = attValue; |
| } |
| } |
| } |
| |
| return node; |
| }) : []; |
| } |
| |
| function parseEdges(parent) { |
| return parent ? zrUtil.map(getChildrenByTagName(parent, 'edge'), function (edgeDom) { |
| var id = getAttr(edgeDom, 'id'); |
| var label = getAttr(edgeDom, 'label'); |
| var sourceId = getAttr(edgeDom, 'source'); |
| var targetId = getAttr(edgeDom, 'target'); |
| var edge = { |
| id: id, |
| name: label, |
| source: sourceId, |
| target: targetId, |
| lineStyle: { |
| normal: {} |
| } |
| }; |
| var lineStyle = edge.lineStyle.normal; |
| var vizThicknessDom = getChildByTagName(edgeDom, 'viz:thickness'); |
| var vizColorDom = getChildByTagName(edgeDom, 'viz:color'); // var vizShapeDom = getChildByTagName(edgeDom, 'viz:shape'); |
| |
| if (vizThicknessDom) { |
| lineStyle.width = parseFloat(vizThicknessDom.getAttribute('value')); |
| } |
| |
| if (vizColorDom) { |
| lineStyle.color = 'rgb(' + [getAttr(vizColorDom, 'r') | 0, getAttr(vizColorDom, 'g') | 0, getAttr(vizColorDom, 'b') | 0].join(',') + ')'; |
| } // if (vizShapeDom) { |
| // edge.shape = vizShapeDom.getAttribute('shape'); |
| // } |
| |
| |
| return edge; |
| }) : []; |
| } |
| |
| function getAttr(el, attrName) { |
| return el.getAttribute(attrName); |
| } |
| |
| function getChildByTagName(parent, tagName) { |
| var node = parent.firstChild; |
| |
| while (node) { |
| if (node.nodeType != 1 || node.nodeName.toLowerCase() != tagName.toLowerCase()) { |
| node = node.nextSibling; |
| } else { |
| return node; |
| } |
| } |
| |
| return null; |
| } |
| |
| function getChildrenByTagName(parent, tagName) { |
| var node = parent.firstChild; |
| var children = []; |
| |
| while (node) { |
| if (node.nodeName.toLowerCase() == tagName.toLowerCase()) { |
| children.push(node); |
| } |
| |
| node = node.nextSibling; |
| } |
| |
| return children; |
| } |
| |
| exports.parse = parse; |