| /* |
| * Copyright 1999-2004 The Apache Software Foundation. |
| * |
| * 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 org.apache.cocoon.components.language.programming.java; |
| |
| import org.apache.avalon.framework.logger.AbstractLogEnabled; |
| import org.apache.avalon.excalibur.pool.Recyclable; |
| import org.apache.cocoon.components.language.programming.LanguageCompiler; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.util.List; |
| |
| /** |
| * This class implements the functionality common to all Java compilers. |
| * @author <a href="mailto:stefano@apache.org">Stefano Mazzocchi</a> |
| * @version CVS $Id: AbstractJavaCompiler.java,v 1.2 2004/03/05 13:02:48 bdelacretaz Exp $ |
| * @since 2.0 |
| */ |
| public abstract class AbstractJavaCompiler extends AbstractLogEnabled implements LanguageCompiler, Recyclable { |
| |
| /** |
| * The source program filename |
| */ |
| protected String file; |
| |
| /** |
| * The name of the directory containing the source program file |
| */ |
| protected String srcDir; |
| |
| /** |
| * The name of the directory to contain the resulting object program file |
| */ |
| protected String destDir; |
| |
| /** |
| * The classpath to be used for compilation |
| */ |
| protected String classpath; |
| |
| /** |
| * The encoding of the source program or <code>null</code> to use the |
| * platform's default encoding |
| */ |
| protected String encoding = null; |
| |
| /** |
| * The input stream to output compilation errors |
| */ |
| protected InputStream errors; |
| |
| /** |
| * Set the name of the file containing the source program |
| * |
| * @param file The name of the file containing the source program |
| */ |
| public void setFile(String file) { |
| this.file = file; |
| } |
| |
| /** |
| * Set the name of the directory containing the source program file |
| * |
| * @param srcDir The name of the directory containing the source program file |
| */ |
| public void setSource(String srcDir) { |
| this.srcDir = srcDir; |
| } |
| |
| /** |
| * Set the name of the directory to contain the resulting object program file |
| * |
| * @param destDir The name of the directory to contain the resulting object |
| * program file |
| */ |
| public void setDestination(String destDir) { |
| this.destDir = destDir; |
| } |
| |
| /** |
| * Set the classpath to be used for this compilation |
| * |
| * @param classpath The classpath to be used for this compilation |
| */ |
| public void setClasspath(String classpath) { |
| this.classpath = classpath; |
| } |
| |
| /** |
| * Set the encoding of the input source file or <code>null</code> to use the |
| * platform's default encoding |
| * |
| * @param encoding The encoding of the input source file or <code>null</code> |
| * to use the platform's default encoding |
| */ |
| public void setEncoding(String encoding) { |
| this.encoding = encoding; |
| } |
| |
| /** |
| * Return the list of errors generated by this compilation |
| * |
| * @return The list of errors generated by this compilation |
| * @exception IOException If an error occurs during message collection |
| */ |
| public List getErrors() throws IOException { |
| return parseStream(new BufferedReader(new InputStreamReader(errors))); |
| } |
| |
| /** |
| * Parse the compiler error stream to produce a list of |
| * <code>CompilerError</code>s |
| * |
| * @param errors The error stream |
| * @return The list of compiler error messages |
| * @exception IOException If an error occurs during message collection |
| */ |
| protected abstract List parseStream(BufferedReader errors) |
| throws IOException; |
| |
| /** |
| * Fill the arguments taken by the Java compiler |
| * |
| * @param arguments The list of compilation arguments |
| * @return The prepared list of compilation arguments |
| */ |
| protected List fillArguments(List arguments) { |
| // destination directory |
| arguments.add("-d"); |
| arguments.add(destDir); |
| |
| // classpath |
| arguments.add("-classpath"); |
| arguments.add(classpath); |
| |
| // sourcepath |
| arguments.add("-sourcepath"); |
| arguments.add(srcDir); |
| |
| // add optimization (for what is worth) |
| arguments.add("-O"); |
| |
| // add encoding if set |
| if (encoding != null) { |
| arguments.add("-encoding"); |
| arguments.add(encoding); |
| } |
| |
| return arguments; |
| } |
| |
| /** |
| * Copy arguments to a string array |
| * |
| * @param arguments The compiler arguments |
| * @return A string array containing compilation arguments |
| */ |
| protected String[] toStringArray(List arguments) { |
| int i; |
| String[] args = new String[arguments.size() + 1]; |
| |
| for (i = 0; i < arguments.size(); i++) { |
| args[i] = (String) arguments.get(i); |
| } |
| |
| args[i] = file; |
| |
| return args; |
| } |
| |
| /** Reset all internal state. |
| * This method is called by the component manager before this |
| * component is return to its pool. |
| */ |
| public void recycle() { |
| file = null; |
| srcDir = null; |
| destDir = null; |
| classpath = null; |
| encoding = null; |
| errors = null; |
| } |
| } |