001 /*
002 * Copyright 2005 The Apache Software Foundation.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016 package org.vafer.jdeb.changes;
017
018 import java.io.BufferedReader;
019 import java.io.BufferedWriter;
020 import java.io.IOException;
021 import java.io.InputStream;
022 import java.io.InputStreamReader;
023 import java.io.OutputStream;
024 import java.io.OutputStreamWriter;
025 import java.text.DateFormat;
026 import java.text.ParseException;
027 import java.text.SimpleDateFormat;
028 import java.util.ArrayList;
029 import java.util.Collection;
030 import java.util.Date;
031 import java.util.Locale;
032
033 import org.vafer.jdeb.descriptors.PackageDescriptor;
034
035 /**
036 * Gets the changes from a changes file. The first entry are the current changes.
037 * The release line will be added. Example:
038
039 release date=22:13 19.08.2007,version=1.5+r90114,urgency=low,by=Torsten Curdt <torsten@vafer.org>
040 * debian changes support
041 release date=20:13 17.08.2007,version=1.4+r89114,urgency=low,by=Torsten Curdt <torsten@vafer.org>
042 * debian changes support
043
044 * @author Torsten Curdt <tcurdt@vafer.org>
045 */
046 public final class TextfileChangesProvider implements ChangesProvider {
047
048 private final ChangeSet[] changeSets;
049
050 public TextfileChangesProvider( final InputStream pInput, final PackageDescriptor pDescriptor ) throws IOException, ParseException {
051
052 final BufferedReader reader = new BufferedReader(new InputStreamReader(pInput));
053
054 final DateFormat tdf = new SimpleDateFormat("EEE, d MMM yyyy HH:mm:ss Z", Locale.ENGLISH); // RFC 2822 format
055 final DateFormat sdf = ChangeSet.createDateForma();
056
057 String packageName = pDescriptor.get("Package");
058 String version = pDescriptor.get("Version");
059 Date date = tdf.parse(pDescriptor.get("Date"));
060 String distribution = pDescriptor.get("Distribution");
061 String urgency = pDescriptor.get("Urgency");
062 String changedBy = pDescriptor.get("Maintainer");
063 final Collection changesColl = new ArrayList();
064 final Collection changeSetColl = new ArrayList();
065
066
067 while(true) {
068 final String line = reader.readLine();
069 if (line == null) {
070 final String[] changes = (String[]) changesColl.toArray(new String[changesColl.size()]);
071 final ChangeSet changeSet = new ChangeSet(packageName, version, date, distribution, urgency, changedBy, changes);
072 changeSetColl.add(changeSet);
073 break;
074 }
075
076 if (line.startsWith("release ")) {
077
078 if (changesColl.size() > 0) {
079 final String[] changes = (String[]) changesColl.toArray(new String[changesColl.size()]);
080 final ChangeSet changeSet = new ChangeSet(packageName, version, date, distribution, urgency, changedBy, changes);
081 changeSetColl.add(changeSet);
082 changesColl.clear();
083 }
084
085 final String[] tokens = line.substring("release ".length()).split(",");
086 for (int i = 0; i < tokens.length; i++) {
087 final String token = tokens[i].trim();
088 final String[] lr = token.split("=");
089 final String key = lr[0];
090 final String value = lr[1];
091
092 if ("urgency".equals(key)) {
093 urgency = value;
094 } else if ("by".equals(key)) {
095 changedBy = value;
096 } else if ("date".equals(key)) {
097 date = sdf.parse(value);
098 } else if ("version".equals(key)) {
099 version = value;
100 } else if ("distribution".equals(key)) {
101 distribution = value;
102 }
103 }
104 continue;
105 }
106
107 if (line.startsWith(" * ")) {
108 changesColl.add(line.substring(" * ".length()));
109 continue;
110 }
111
112 throw new ParseException("Unknown line syntax [" + line + "]", 0);
113 }
114
115 reader.close();
116
117 changeSets = (ChangeSet[]) changeSetColl.toArray(new ChangeSet[changeSetColl.size()]);
118 }
119
120 public void save( final OutputStream pOutput ) throws IOException {
121 final BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(pOutput));
122
123 final DateFormat df = ChangeSet.createDateForma();
124
125 for (int i = 0; i < changeSets.length; i++) {
126 final ChangeSet changeSet = changeSets[i];
127
128 writer.write("release ");
129 writer.write("date=" + df.format(changeSet.getDate()) + ",");
130 writer.write("version=" + changeSet.getVersion() + ",");
131 writer.write("urgency=" + changeSet.getUrgency() + ",");
132 writer.write("by=" + changeSet.getChangedBy() + ",");
133 writer.write("distribution=" + changeSet.getDistribution());
134 writer.write("\n");
135
136 final String[] changes = changeSet.getChanges();
137 for (int j = 0; j < changes.length; j++) {
138 writer.write(" * ");
139 writer.write(changes[j]);
140 writer.write("\n");
141 }
142 }
143
144 writer.close();
145 }
146
147 public ChangeSet[] getChangesSets() {
148 return changeSets;
149 }
150
151 }