blob: fdaf9713b870d1ef8c15dfa5e36463dfa54c1c1f [file] [log] [blame]
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;