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Diffstat (limited to 'qpid/gentools/src/org/apache/qpid/gentools/Main.java')
| -rw-r--r-- | qpid/gentools/src/org/apache/qpid/gentools/Main.java | 301 |
1 files changed, 301 insertions, 0 deletions
diff --git a/qpid/gentools/src/org/apache/qpid/gentools/Main.java b/qpid/gentools/src/org/apache/qpid/gentools/Main.java new file mode 100644 index 0000000000..c0584f7ca7 --- /dev/null +++ b/qpid/gentools/src/org/apache/qpid/gentools/Main.java @@ -0,0 +1,301 @@ +/* + * + * 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. + * + */ +package org.apache.qpid.gentools; + +import org.apache.velocity.app.Velocity; +import org.w3c.dom.Document; +import org.w3c.dom.Node; +import org.xml.sax.SAXException; + +import javax.xml.parsers.DocumentBuilder; +import javax.xml.parsers.DocumentBuilderFactory; +import javax.xml.parsers.ParserConfigurationException; +import java.io.File; +import java.io.IOException; +import java.lang.reflect.InvocationTargetException; +import java.util.ArrayList; +import java.util.Properties; + +public class Main +{ + private static final String DEFAULT_OUTPUT_DIR = ".." + Utils.FILE_SEPARATOR + "gen"; + private static final String DEFAULT_TEMPLATE_DIR_BASE = ".." + Utils.FILE_SEPARATOR; + + private enum GeneratedLanguage + { + CPP(".cpp", CppGenerator.getFactory()), + DOTNET(".net", DotnetGenerator.getFactory()), + JAVA(".java", JavaGenerator.getFactory()); + + private final String _suffix; + private final Generator.Factory _factory; + + + private final String _defaultTemplateDirectory; + + GeneratedLanguage(String suffix, Generator.Factory factory) + { + _suffix = suffix; + _factory = factory; + _defaultTemplateDirectory = DEFAULT_TEMPLATE_DIR_BASE + "templ" + _suffix; + } + + public String getSuffix() + { + return _suffix; + } + + public Generator newGenerator() + { + return _factory.newInstance(); + } + + public String getDefaultTemplateDirectory() + { + return _defaultTemplateDirectory; + } + } + + private Generator generator; + + private String outDir; + private String tmplDir; + private GeneratedLanguage _generatorLang; + private ArrayList<String> xmlFiles; + + public Main() + { + xmlFiles = new ArrayList<String>(); + } + + public void run(String[] args) + throws Exception, + SAXException, + AmqpParseException, + AmqpTypeMappingException, + AmqpTemplateException, + TargetDirectoryException, + IllegalAccessException, + InvocationTargetException, ParserConfigurationException + { + + // 0. Initialize + outDir = DEFAULT_OUTPUT_DIR; + tmplDir = null; + _generatorLang = GeneratedLanguage.CPP; // Default generation language + xmlFiles.clear(); + processArgs(args); + + if (tmplDir == null) + { + tmplDir = _generatorLang.getDefaultTemplateDirectory(); + } + + + generator = _generatorLang.newGenerator(); + generator.setTemplateDirectory(tmplDir); + generator.setOutputDirectory(outDir); + + // 1. Suck in all the XML spec files provided on the command line + analyzeXML(); + + Properties p = new Properties(); + p.setProperty("file.resource.loader.path", tmplDir); + + Velocity.init(p); + + // 2. Load up all templates + generator.initializeTemplates(); + + // 3. Generate output + generator.generate(); + + System.out.println("Files generated: " + generator.getNumberGeneratedFiles()); + System.out.println("Done."); + } + + private void processArgs(String[] args) + { + // Crude but simple... + for (int i = 0; i < args.length; i++) + { + String arg = args[i]; + if (arg.charAt(0) == '-') + { + switch (arg.charAt(1)) + { + case'c': + case'C': + _generatorLang = GeneratedLanguage.CPP; + break; + case'j': + case'J': + _generatorLang = GeneratedLanguage.JAVA; + break; + case'n': + case'N': + _generatorLang = GeneratedLanguage.DOTNET; + break; + case'o': + case'O': + if (++i < args.length) + { + outDir = args[i]; + } + break; + case't': + case'T': + if (++i < args.length) + { + tmplDir = args[i]; + } + break; + } + } + else + { + xmlFiles.add(args[i]); + } + } + } + + private void analyzeXML() + throws IOException, SAXException, AmqpParseException, AmqpTypeMappingException, ParserConfigurationException + { + DocumentBuilder docBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder(); + + System.out.println("XML files: " + xmlFiles); + for (String filename : xmlFiles) + { + File f = new File(filename); + if (f.exists()) + { + // 1a. Initialize dom + System.out.print(" \"" + filename + "\":"); + Document doc = docBuilder.parse(new File(filename)); + Node amqpNode = Utils.findChild(doc, Utils.ELEMENT_AMQP); + + // 1b. Extract version (major and minor) from the XML file + int major = Utils.getNamedIntegerAttribute(amqpNode, Utils.ATTRIBUTE_MAJOR); + int minor = Utils.getNamedIntegerAttribute(amqpNode, Utils.ATTRIBUTE_MINOR); + AmqpVersion version = new AmqpVersion(major, minor); + System.out.println(" Found version " + version.toString() + "."); + generator.addVersion(version); + generator.addFromNode(amqpNode, version); + + + } + else + { + System.err.println("ERROR: AMQP XML file \"" + filename + "\" not found."); + } + } +// *** DEBUG INFO *** Uncomment bits from this block to see lots of stuff.... +// System.out.println(); +// System.out.println("*** Debug output ***"); +// System.out.println(); +// versionSet.print(System.out, 0, 2); // List of loaded versions +// System.out.println(); +// constants.print(System.out, 0, 2); // List of constants +// System.out.println(); +// domainMap.print(System.out, 0, 2); // List of domains +// System.out.println(); +// model.print(System.out, 0, 2); // Internal version map model +// System.out.println(); +// System.out.println("*** End debug output ***"); +// System.out.println(); + } + + public static void main(String[] args) + { + int exitCode = 1; + // TODO: This is a simple and klunky way of hangling command-line args, and could be improved upon. + if (args.length < 2) + { + usage(); + } + else + { + try + { + new Main().run(args); + exitCode = 0; + } + catch (IOException e) + { + e.printStackTrace(); + } + catch (ParserConfigurationException e) + { + e.printStackTrace(); + } + catch (SAXException e) + { + e.printStackTrace(); + } + catch (AmqpParseException e) + { + e.printStackTrace(); + } + catch (AmqpTypeMappingException e) + { + e.printStackTrace(); + } + catch (AmqpTemplateException e) + { + e.printStackTrace(); + } + catch (TargetDirectoryException e) + { + e.printStackTrace(); + } + catch (IllegalAccessException e) + { + e.printStackTrace(); + } + catch (InvocationTargetException e) + { + e.printStackTrace(); + } + catch (Exception e) + { + e.printStackTrace(); + } + } + System.exit(exitCode); + } + + public static void usage() + { + System.out.println("AMQP XML generator v.0.0"); + System.out.println("Usage: Main -c|-j [-o outDir] [-t tmplDir] XMLfile [XMLfile ...]"); + System.out.println(" where -c: Generate C++."); + System.out.println(" -j: Generate Java."); + System.out.println(" -n: Generate .NET."); + System.out.println(" -o outDir: Use outDir as the output dir (default=\"" + DEFAULT_OUTPUT_DIR + "\")."); + System.out.println(" -t tmplDir: Find templates in tmplDir."); + System.out.println(" Defaults: \"" + GeneratedLanguage.CPP.getDefaultTemplateDirectory() + "\" for C++;"); + System.out.println(" \"" + GeneratedLanguage.JAVA.getDefaultTemplateDirectory() + "\" for java.;"); + System.out.println(" \"" + GeneratedLanguage.DOTNET.getDefaultTemplateDirectory() + "\" for .NET."); + System.out.println(" XMLfile is a space-separated list of AMQP XML files to be parsed."); + } + +} |