org.apache.tools.ant.taskdefs.cvslib.ChangeLogParser Maven / Gradle / Ivy
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Testatoo Jetty Container with JSP support
/*
* Copyright 2002-2005 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.tools.ant.taskdefs.cvslib;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.TimeZone;
/**
* A class used to parse the output of the CVS log command.
*
*/
class ChangeLogParser {
//private static final int GET_ENTRY = 0;
private static final int GET_FILE = 1;
private static final int GET_DATE = 2;
private static final int GET_COMMENT = 3;
private static final int GET_REVISION = 4;
private static final int GET_PREVIOUS_REV = 5;
/** input format for dates read in from cvs log */
private static final SimpleDateFormat c_inputDate
= new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
static {
TimeZone utc = TimeZone.getTimeZone("UTC");
c_inputDate.setTimeZone(utc);
}
//The following is data used while processing stdout of CVS command
private String m_file;
private String m_date;
private String m_author;
private String m_comment;
private String m_revision;
private String m_previousRevision;
private int m_status = GET_FILE;
/** rcs entries */
private final Hashtable m_entries = new Hashtable();
/**
* Get a list of rcs entries as an array.
*
* @return a list of rcs entries as an array
*/
CVSEntry[] getEntrySetAsArray() {
final CVSEntry[] array = new CVSEntry[ m_entries.size() ];
Enumeration e = m_entries.elements();
int i = 0;
while (e.hasMoreElements()) {
array[i++] = (CVSEntry) e.nextElement();
}
return array;
}
/**
* Receive notification about the process writing
* to standard output.
*/
public void stdout(final String line) {
switch(m_status) {
case GET_FILE:
// make sure attributes are reset when
// working on a 'new' file.
reset();
processFile(line);
break;
case GET_REVISION:
processRevision(line);
break;
case GET_DATE:
processDate(line);
break;
case GET_COMMENT:
processComment(line);
break;
case GET_PREVIOUS_REV:
processGetPreviousRevision(line);
break;
}
}
/**
* Process a line while in "GET_COMMENT" state.
*
* @param line the line
*/
private void processComment(final String line) {
final String lineSeparator = System.getProperty("line.separator");
if (line.startsWith("======")) {
//We have ended changelog for that particular file
//so we can save it
final int end
= m_comment.length() - lineSeparator.length(); //was -1
m_comment = m_comment.substring(0, end);
saveEntry();
m_status = GET_FILE;
} else if (line.startsWith("----------------------------")) {
final int end
= m_comment.length() - lineSeparator.length(); //was -1
m_comment = m_comment.substring(0, end);
m_status = GET_PREVIOUS_REV;
} else {
m_comment += line + lineSeparator;
}
}
/**
* Process a line while in "GET_FILE" state.
*
* @param line the line
*/
private void processFile(final String line) {
if (line.startsWith("Working file:")) {
m_file = line.substring(14, line.length());
m_status = GET_REVISION;
}
}
/**
* Process a line while in "REVISION" state.
*
* @param line the line
*/
private void processRevision(final String line) {
if (line.startsWith("revision")) {
m_revision = line.substring(9);
m_status = GET_DATE;
} else if (line.startsWith("======")) {
//There was no revisions in this changelog
//entry so lets move unto next file
m_status = GET_FILE;
}
}
/**
* Process a line while in "DATE" state.
*
* @param line the line
*/
private void processDate(final String line) {
if (line.startsWith("date:")) {
m_date = line.substring(6, 25);
String lineData = line.substring(line.indexOf(";") + 1);
m_author = lineData.substring(10, lineData.indexOf(";"));
m_status = GET_COMMENT;
//Reset comment to empty here as we can accumulate multiple lines
//in the processComment method
m_comment = "";
}
}
/**
* Process a line while in "GET_PREVIOUS_REVISION" state.
*
* @param line the line
*/
private void processGetPreviousRevision(final String line) {
if (!line.startsWith("revision")) {
throw new IllegalStateException("Unexpected line from CVS: "
+ line);
}
m_previousRevision = line.substring(9);
saveEntry();
m_revision = m_previousRevision;
m_status = GET_DATE;
}
/**
* Utility method that saves the current entry.
*/
private void saveEntry() {
final String entryKey = m_date + m_author + m_comment;
CVSEntry entry;
if (!m_entries.containsKey(entryKey)) {
entry = new CVSEntry(parseDate(m_date), m_author, m_comment);
m_entries.put(entryKey, entry);
} else {
entry = (CVSEntry) m_entries.get(entryKey);
}
entry.addFile(m_file, m_revision, m_previousRevision);
}
/**
* Parse date out from expected format.
*
* @param date the string holding dat
* @return the date object or null if unknown date format
*/
private Date parseDate(final String date) {
try {
return c_inputDate.parse(date);
} catch (ParseException e) {
//final String message = REZ.getString( "changelog.bat-date.error", date );
//getContext().error( message );
return null;
}
}
/**
* reset all internal attributes except status.
*/
private void reset() {
m_file = null;
m_date = null;
m_author = null;
m_comment = null;
m_revision = null;
m_previousRevision = null;
}
}