| package org.apache.maven.scm.provider.perforce.command.changelog; |
| |
| /* |
| * 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 java.util.ArrayList; |
| import java.util.List; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| import org.apache.maven.scm.ChangeFile; |
| import org.apache.maven.scm.ChangeSet; |
| import org.apache.maven.scm.ScmException; |
| import org.apache.maven.scm.log.ScmLogger; |
| import org.apache.maven.scm.util.AbstractConsumer; |
| |
| /** |
| * Parse the tagged output from "p4 describe -s [change] [change] [...]". |
| * |
| * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a> |
| * @author Olivier Lamy |
| * |
| */ |
| public class PerforceDescribeConsumer |
| extends AbstractConsumer |
| { |
| |
| private List<ChangeSet> entries = new ArrayList<ChangeSet>(); |
| |
| /** |
| * State machine constant: expecting revision |
| */ |
| private static final int GET_REVISION = 1; |
| |
| /** |
| * State machine constant: eat the first blank line |
| */ |
| private static final int GET_COMMENT_BEGIN = 2; |
| |
| /** |
| * State machine constant: expecting comments |
| */ |
| private static final int GET_COMMENT = 3; |
| |
| /** |
| * State machine constant: expecting "Affected files" |
| */ |
| private static final int GET_AFFECTED_FILES = 4; |
| |
| /** |
| * State machine constant: expecting blank line |
| */ |
| private static final int GET_FILES_BEGIN = 5; |
| |
| /** |
| * State machine constant: expecting files |
| */ |
| private static final int GET_FILE = 6; |
| |
| /** |
| * Current status of the parser |
| */ |
| private int status = GET_REVISION; |
| |
| /** |
| * The current log entry being processed by the parser |
| */ |
| @SuppressWarnings( "unused" ) |
| private String currentRevision; |
| |
| /** |
| * The current log entry being processed by the parser |
| */ |
| private ChangeSet currentChange; |
| |
| /** |
| * the current file being processed by the parser |
| */ |
| private String currentFile; |
| |
| /** |
| * The location of files within the Perforce depot that we are processing |
| * e.g. //depot/projects/foo/bar |
| */ |
| private String repoPath; |
| |
| private String userDatePattern; |
| |
| /** |
| * The regular expression used to match header lines |
| */ |
| private static final Pattern REVISION_PATTERN = Pattern.compile( "^Change (\\d+) " + // changelist number |
| "by (.*)@[^ ]+ " + // author |
| "on (.*)" ); // date |
| /** |
| * The comment section ends with a blank line |
| */ |
| private static final String COMMENT_DELIMITER = ""; |
| /** |
| * The changelist ends with a blank line |
| */ |
| private static final String CHANGELIST_DELIMITER = ""; |
| |
| /** |
| * The regular expression used to match file paths |
| */ |
| private static final Pattern FILE_PATTERN = Pattern.compile( "^\\.\\.\\. (.*)#(\\d+) " ); |
| |
| public PerforceDescribeConsumer( String repoPath, String userDatePattern, ScmLogger logger ) |
| { |
| super( logger ); |
| |
| this.repoPath = repoPath; |
| this.userDatePattern = userDatePattern; |
| } |
| |
| // ---------------------------------------------------------------------- |
| // |
| // ---------------------------------------------------------------------- |
| |
| public List<ChangeSet> getModifications() throws ScmException |
| { |
| return entries; |
| } |
| |
| // ---------------------------------------------------------------------- |
| // StreamConsumer Implementation |
| // ---------------------------------------------------------------------- |
| |
| /** {@inheritDoc} */ |
| public void consumeLine( String line ) |
| { |
| switch ( status ) |
| { |
| case GET_REVISION: |
| processGetRevision( line ); |
| break; |
| case GET_COMMENT_BEGIN: |
| status = GET_COMMENT; |
| break; |
| case GET_COMMENT: |
| processGetComment( line ); |
| break; |
| case GET_AFFECTED_FILES: |
| processGetAffectedFiles( line ); |
| break; |
| case GET_FILES_BEGIN: |
| status = GET_FILE; |
| break; |
| case GET_FILE: |
| processGetFile( line ); |
| break; |
| default: |
| throw new IllegalStateException( "Unknown state: " + status ); |
| } |
| } |
| |
| // ---------------------------------------------------------------------- |
| // |
| // ---------------------------------------------------------------------- |
| |
| /** |
| * Add a change log entry to the list (if it's not already there) |
| * with the given file. |
| * |
| * @param entry a {@link ChangeSet} to be added to the list if another |
| * with the same key (p4 change number) doesn't exist already. |
| * @param file a {@link ChangeFile} to be added to the entry |
| */ |
| private void addEntry( ChangeSet entry, ChangeFile file ) |
| { |
| entry.addFile( file ); |
| } |
| |
| /** |
| * Each file matches the fileRegexp. |
| * |
| * @param line A line of text from the Perforce log output |
| */ |
| private void processGetFile( String line ) |
| { |
| if ( line.equals( CHANGELIST_DELIMITER ) ) |
| { |
| entries.add( 0, currentChange ); |
| status = GET_REVISION; |
| return; |
| } |
| |
| Matcher matcher = FILE_PATTERN.matcher( line ); |
| if ( !matcher.find() ) |
| { |
| return; |
| } |
| |
| currentFile = matcher.group( 1 ); |
| |
| // Although Perforce allows files to be submitted anywhere in the |
| // repository in a single changelist, we're only concerned about the |
| // local files. |
| if ( currentFile.startsWith( repoPath ) ) |
| { |
| currentFile = currentFile.substring( repoPath.length() + 1 ); |
| addEntry( currentChange, new ChangeFile( currentFile, matcher.group( 2 ) ) ); |
| } |
| } |
| |
| /** |
| * Most of the relevant info is on the revision line matching the |
| * 'pattern' string. |
| * |
| * @param line A line of text from the perforce log output |
| */ |
| private void processGetRevision( String line ) |
| { |
| Matcher matcher = REVISION_PATTERN.matcher( line ); |
| if ( !matcher.find() ) |
| { |
| return; |
| } |
| currentChange = new ChangeSet(); |
| currentRevision = matcher.group( 1 ); |
| currentChange.setAuthor( matcher.group( 2 ) ); |
| currentChange.setDate( matcher.group( 3 ), userDatePattern ); |
| |
| status = GET_COMMENT_BEGIN; |
| } |
| |
| /** |
| * Process the current input line in the GET_COMMENT state. This |
| * state gathers all of the comments that are part of a log entry. |
| * |
| * @param line a line of text from the perforce log output |
| */ |
| private void processGetComment( String line ) |
| { |
| if ( line.equals( COMMENT_DELIMITER ) ) |
| { |
| status = GET_AFFECTED_FILES; |
| } |
| else |
| { |
| // remove prepended tab |
| currentChange.setComment( currentChange.getComment() + line.substring( 1 ) + "\n" ); |
| } |
| } |
| |
| /** |
| * Process the current input line in the GET_COMMENT state. This |
| * state gathers all of the comments that are part of a log entry. |
| * |
| * @param line a line of text from the perforce log output |
| */ |
| private void processGetAffectedFiles( String line ) |
| { |
| if ( !line.equals( "Affected files ..." ) ) |
| { |
| return; |
| } |
| status = GET_FILES_BEGIN; |
| } |
| } |