| /* Copyright 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.xmlbeans.impl.util; |
| |
| import org.apache.xmlbeans.Filer; |
| |
| import java.io.IOException; |
| import java.io.File; |
| import java.io.Writer; |
| import java.io.FileReader; |
| import java.io.FileOutputStream; |
| import java.io.FileWriter; |
| import java.io.OutputStream; |
| import java.io.OutputStreamWriter; |
| import java.io.StringReader; |
| import java.io.StringWriter; |
| import java.nio.charset.Charset; |
| import java.nio.charset.CharsetEncoder; |
| import java.nio.charset.CodingErrorAction; |
| import java.util.Set; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.ArrayList; |
| |
| import org.apache.xmlbeans.impl.repackage.Repackager; |
| |
| /** |
| * This implementation of Filer writes to disk. |
| */ |
| public class FilerImpl implements Filer |
| { |
| private File classdir; |
| private File srcdir; |
| private Repackager repackager; |
| private boolean verbose; |
| private List sourceFiles; |
| private boolean incrSrcGen; |
| private Set seenTypes; |
| private static final Charset CHARSET; |
| |
| static |
| { |
| Charset temp = null; |
| try |
| { |
| temp = Charset.forName(System.getProperty("file.encoding")); |
| } |
| catch (Exception e) {} |
| CHARSET = temp; |
| } |
| |
| public FilerImpl(File classdir, File srcdir, Repackager repackager, boolean verbose, boolean incrSrcGen) |
| { |
| this.classdir = classdir; |
| this.srcdir = srcdir; |
| this.repackager = repackager; |
| this.verbose = verbose; |
| this.sourceFiles = (sourceFiles != null ? sourceFiles : new ArrayList()); |
| this.incrSrcGen = incrSrcGen; |
| if (this.incrSrcGen) |
| seenTypes = new HashSet(); |
| } |
| |
| /** |
| * Creates a new schema binary file (.xsb) and returns a stream for writing to it. |
| * |
| * @param typename fully qualified type name |
| * @return a stream to write the type to |
| * @throws java.io.IOException |
| */ |
| public OutputStream createBinaryFile(String typename) throws IOException |
| { |
| if (verbose) |
| System.err.println("created binary: " + typename); |
| // KHK: for now the typename will already be a relative filename for the binary |
| //String filename = typename.replace('.', File.separatorChar) + ".xsb"; |
| File source = new File(classdir, typename); |
| source.getParentFile().mkdirs(); |
| |
| return new FileOutputStream( source ); |
| } |
| |
| /** |
| * Creates a new binding source file (.java) and returns a writer for it. |
| * |
| * @param typename fully qualified type name |
| * @return a stream to write the type to |
| * @throws java.io.IOException |
| */ |
| public Writer createSourceFile(String typename) throws IOException |
| { |
| if (incrSrcGen) |
| seenTypes.add(typename); |
| |
| if (typename.indexOf('$') > 0) |
| { |
| typename = |
| typename.substring( 0, typename.lastIndexOf( '.' ) ) + "." + |
| typename.substring( typename.indexOf( '$' ) + 1 ); |
| } |
| |
| String filename = typename.replace('.', File.separatorChar) + ".java"; |
| |
| File sourcefile = new File(srcdir, filename); |
| sourcefile.getParentFile().mkdirs(); |
| if (verbose) |
| System.err.println("created source: " + sourcefile.getAbsolutePath()); |
| |
| sourceFiles.add(sourcefile); |
| |
| if (incrSrcGen && sourcefile.exists()) |
| { |
| // Generate the file in a buffer and then compare it to the |
| // file already on disk |
| return new IncrFileWriter(sourcefile, repackager); |
| } |
| else |
| { |
| return repackager == null ? |
| (Writer) writerForFile( sourcefile ) : |
| (Writer) new RepackagingWriter( sourcefile, repackager ); |
| } |
| } |
| |
| public List getSourceFiles() |
| { |
| return new ArrayList(sourceFiles); |
| } |
| |
| public Repackager getRepackager() |
| { |
| return repackager; |
| } |
| |
| private static final Writer writerForFile(File f) throws IOException |
| { |
| if (CHARSET == null) |
| return new FileWriter(f); |
| |
| FileOutputStream fileStream = new FileOutputStream(f); |
| CharsetEncoder ce = CHARSET.newEncoder(); |
| ce.onUnmappableCharacter(CodingErrorAction.REPORT); |
| return new OutputStreamWriter(fileStream, ce); |
| } |
| |
| static class IncrFileWriter extends StringWriter |
| { |
| private File _file; |
| private Repackager _repackager; |
| |
| public IncrFileWriter(File file, Repackager repackager) |
| { |
| _file = file; |
| _repackager = repackager; |
| } |
| |
| public void close() throws IOException |
| { |
| super.close(); |
| |
| // This is where all the real work happens |
| StringBuffer sb = _repackager != null ? |
| _repackager.repackage(getBuffer()) : |
| getBuffer(); |
| String str = sb.toString(); |
| List diffs = new ArrayList(); |
| StringReader sReader = new StringReader(str); |
| FileReader fReader = new FileReader(_file); |
| |
| try |
| { |
| Diff.readersAsText(sReader, "<generated>", |
| fReader, _file.getName(), diffs); |
| } |
| finally |
| { |
| sReader.close(); |
| fReader.close(); |
| } |
| |
| if (diffs.size() > 0) |
| { |
| // Diffs encountered, replace the file on disk with text from |
| // the buffer |
| Writer fw = writerForFile(_file); |
| try |
| { fw.write(str); } |
| finally |
| { fw.close(); } |
| } |
| else |
| ; // If no diffs, don't do anything |
| } |
| } |
| |
| static class RepackagingWriter extends StringWriter |
| { |
| public RepackagingWriter ( File file, Repackager repackager ) |
| { |
| _file = file; |
| _repackager = repackager; |
| } |
| |
| public void close ( ) throws IOException |
| { |
| super.close(); |
| |
| Writer fw = writerForFile( _file ); |
| try |
| { fw.write( _repackager.repackage( getBuffer() ).toString() ); } |
| finally |
| { fw.close(); } |
| } |
| |
| private File _file; |
| private Repackager _repackager; |
| } |
| } |