| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| package com.android.sdklib.repository; |
| |
| import com.google.common.collect.Lists; |
| |
| import org.xml.sax.Attributes; |
| import org.xml.sax.SAXException; |
| import org.xml.sax.helpers.DefaultHandler; |
| |
| import java.io.BufferedReader; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.util.List; |
| import java.util.logging.Logger; |
| |
| import javax.xml.parsers.ParserConfigurationException; |
| import javax.xml.parsers.SAXParserFactory; |
| import javax.xml.transform.stream.StreamSource; |
| |
| /** |
| * Utilities related to the respository XSDs. |
| */ |
| public class RepoXsdUtil { |
| |
| public static final String NODE_IMPORT = "import"; |
| public static final String NODE_INCLUDE = "include"; |
| |
| public static final String ATTR_SCHEMA_LOCATION = "schemaLocation"; |
| |
| |
| /** |
| * Gets StreamSources for the given xsd (implied by the name and version), as well as any xsds imported or included by the main one. |
| * |
| * @param rootElement The root of the filename of the XML schema. This is by convention the same |
| * as the root element declared by the schema. |
| * @param version The XML schema revision number, an integer >= 1. |
| */ |
| public static StreamSource[] getXsdStream(final String rootElement, int version) { |
| String filename = String.format("%1$s-%2$02d.xsd", rootElement, version); //$NON-NLS-1$ |
| final List<StreamSource> streams = Lists.newArrayList(); |
| InputStream stream = null; |
| try { |
| stream = RepoXsdUtil.class.getResourceAsStream(filename); |
| if (stream == null) { |
| filename = String.format("%1$s-%2$d.xsd", rootElement, version); //$NON-NLS-1$ |
| stream = RepoXsdUtil.class.getResourceAsStream(filename); |
| } |
| if (stream == null) { |
| // Try the alternate schemas that are not published yet. |
| // This allows us to internally test with new schemas before the |
| // public repository uses it. |
| filename = String.format("-%1$s-%2$02d.xsd", rootElement, version); //$NON-NLS-1$ |
| stream = RepoXsdUtil.class.getResourceAsStream(filename); |
| } |
| |
| // Parse the schema and find any imports or includes so we can return them as well. |
| // Currently transitive includes are not supported. |
| SAXParserFactory.newInstance().newSAXParser().parse(stream, new DefaultHandler() { |
| @Override |
| public void startElement(String uri, String localName, String name, Attributes attributes) throws SAXException { |
| name = name.substring(name.indexOf(':') + 1); |
| if (name.equals(NODE_IMPORT) || name.equals(NODE_INCLUDE)) { |
| String importFile = attributes.getValue(ATTR_SCHEMA_LOCATION); |
| streams.add(new StreamSource(RepoXsdUtil.class.getResourceAsStream(importFile))); |
| } |
| } |
| }); |
| // create and add the first stream again, since SaxParser closes the original one |
| streams.add(new StreamSource(RepoXsdUtil.class.getResourceAsStream(filename))); |
| } catch (Exception e) { |
| // Some implementations seem to return null on failure, |
| // others throw an exception. We want to return null. |
| return null; |
| } |
| return streams.toArray(new StreamSource[streams.size()]); |
| } |
| } |