| package org.apache.maven.scm.provider.hg.command.diff; |
| |
| /* |
| * 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. |
| */ |
| |
| import org.apache.maven.scm.ScmFile; |
| import org.apache.maven.scm.ScmFileStatus; |
| import org.apache.maven.scm.log.ScmLogger; |
| import org.apache.maven.scm.provider.hg.command.HgConsumer; |
| |
| import java.io.File; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * @author <a href="mailto:thurner.rupert@ymono.net">thurner rupert</a> |
| * @author Olivier Lamy |
| * |
| */ |
| public class HgDiffConsumer |
| extends HgConsumer |
| { |
| |
| // private static final String MODIFIED_FILE_TOKEN = "=== modified file "; |
| |
| private static final String INDEX_TOKEN = "diff -r "; |
| |
| private static final String FILE_SEPARATOR_TOKEN = "==="; |
| |
| private static final String START_REVISION_TOKEN = "---"; |
| |
| private static final String END_REVISION_TOKEN = "+++"; |
| |
| private static final String ADDED_LINE_TOKEN = "+"; |
| |
| private static final String REMOVED_LINE_TOKEN = "-"; |
| |
| private static final String UNCHANGED_LINE_TOKEN = " "; |
| |
| private static final String CHANGE_SEPARATOR_TOKEN = "@@"; |
| |
| private static final String NO_NEWLINE_TOKEN = "\\ No newline at end of file"; |
| |
| private static final int HASH_ID_LEN = 12; |
| |
| private ScmLogger logger; |
| |
| private String currentFile; |
| |
| private StringBuilder currentDifference; |
| |
| private List<ScmFile> changedFiles = new ArrayList<ScmFile>(); |
| |
| private Map<String, CharSequence> differences = new HashMap<String, CharSequence>(); |
| |
| private StringBuilder patch = new StringBuilder(); |
| |
| @SuppressWarnings( "unused" ) |
| private File workingDirectory; |
| |
| |
| public HgDiffConsumer( ScmLogger logger, File workingDirectory ) |
| { |
| super( logger ); |
| this.logger = logger; |
| this.workingDirectory = workingDirectory; |
| } |
| |
| // ---------------------------------------------------------------------- |
| // StreamConsumer Implementation |
| // ---------------------------------------------------------------------- |
| |
| /** {@inheritDoc} */ |
| public void consumeLine( String line ) |
| { |
| if ( line.startsWith( INDEX_TOKEN ) ) |
| { |
| // start a new file |
| currentFile = line.substring( INDEX_TOKEN.length() + HASH_ID_LEN + 1 ); |
| |
| changedFiles.add( new ScmFile( currentFile, ScmFileStatus.MODIFIED ) ); |
| |
| currentDifference = new StringBuilder(); |
| |
| differences.put( currentFile, currentDifference ); |
| |
| patch.append( line ).append( "\n" ); |
| |
| return; |
| } |
| |
| if ( currentFile == null ) |
| { |
| if ( logger.isWarnEnabled() ) |
| { |
| logger.warn( "Unparseable line: '" + line + "'" ); |
| } |
| patch.append( line ).append( "\n" ); |
| return; |
| } |
| |
| if ( line.startsWith( FILE_SEPARATOR_TOKEN ) ) |
| { |
| // skip |
| patch.append( line ).append( "\n" ); |
| } |
| else if ( line.startsWith( START_REVISION_TOKEN ) ) |
| { |
| // skip, though could parse to verify filename, start revision |
| patch.append( line ).append( "\n" ); |
| } |
| else if ( line.startsWith( END_REVISION_TOKEN ) ) |
| { |
| // skip, though could parse to verify filename, end revision |
| patch.append( line ).append( "\n" ); |
| } |
| else if ( line.startsWith( ADDED_LINE_TOKEN ) || line.startsWith( REMOVED_LINE_TOKEN ) |
| || line.startsWith( UNCHANGED_LINE_TOKEN ) || line.startsWith( CHANGE_SEPARATOR_TOKEN ) |
| || line.equals( NO_NEWLINE_TOKEN ) ) |
| { |
| // add to buffer |
| currentDifference.append( line ).append( "\n" ); |
| patch.append( line ).append( "\n" ); |
| } |
| else |
| { |
| // TODO: handle property differences |
| |
| if ( logger.isWarnEnabled() ) |
| { |
| logger.warn( "Unparseable line: '" + line + "'" ); |
| } |
| patch.append( line ).append( "\n" ); |
| // skip to next file |
| currentFile = null; |
| currentDifference = null; |
| } |
| } |
| |
| public List<ScmFile> getChangedFiles() |
| { |
| return changedFiles; |
| } |
| |
| public Map<String, CharSequence> getDifferences() |
| { |
| return differences; |
| } |
| |
| public String getPatch() |
| { |
| return patch.toString(); |
| } |
| } |