Task to overwrite Properties
/*
* 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.io.File;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.StringTokenizer;
/**
* Task to overwrite Properties: used for JRP, TRP and Torque.properties
*
* @author <a href="mailto:taylor@apache.org">David Sean Taylor</a>
* @author <a href="mailto:epugh@upstate.com">Eric Pugh</a>
* @created January 29, 2003
* @version $Id: OverwriteProperties.java 516448 2007-03-09 16:25:47Z ate $
*/
public class OverwriteProperties
{
/** The file to merge properties into */
protected File baseProperties;
/** The file to pull the properties from */
protected File properties;
/** The directory to look in for include files */
protected File includeRoot;
/** Description of the Field */
public boolean verbose = false;
/** An array of all the properties */
protected ArrayList baseArray = new ArrayList(1024);
/** An array of all the properties that will be removed */
protected ArrayList removeArray = new ArrayList(128);
/** Description of the Field */
protected HashMap baseMap = new HashMap();
/** What to use as a line seperator */
protected String lineSeparator = System.getProperty("line.separator", "\r\n");
/**
* Sets the file to merge properties into
*
* @param baseProperties The file path to merge properties into
*/
public void setBaseProperties(File baseProperties)
{
this.baseProperties = baseProperties;
}
/**
* Sets the file to pull properties from
*
* @param properties The file path to the pull the merge properties from
*/
public void setProperties(File properties)
{
this.properties = properties;
}
/**
* Sets the directory to look for includes in.
*
* @param includeRoot the directory to look in.
*/
public void setIncludeRoot(File includeRoot)
{
this.includeRoot = includeRoot;
}
/**
* Sets whether to output extra debugging info
*
* @param verbose The new verbose value
*/
public void setVerbose(boolean verbose)
{
this.verbose = verbose;
}
/**
* Return the file to merge propertie into
*
* @return The baseProperties value
*/
public File getBaseProperties()
{
return baseProperties;
}
/**
* Gets the properties attribute of the OverwriteProperties object
*
* @return The properties value
*/
public File getProperties()
{
return properties;
}
/**
* Gets the includeRoot attribute of the OverwriteProperties object
*
* @return The includeRoot value
*/
public File getIncludeRoot()
{
return includeRoot;
}
/**
* Gets the verbose attribute of the OverwriteProperties object
*
* @return The verbose value
*/
public boolean getVerbose()
{
return verbose;
}
/**
* The main program for the OverwriteProperties class
*
* @param args The command line arguments
* @exception Exception Description of the Exception
*/
public static void main(String[] args)
throws Exception
{
OverwriteProperties overwriteProperties = new OverwriteProperties();
try
{
if (args.length < 3)
{
System.out.println("Usage: java OverwriteProperties c:/temp/File1.props c:/temp/File2.props c:/include-root/");
System.out.println("Usage: File1 will be modified, new parameters from File 2 will be added,");
System.out.println(
"Usage: and same parameters will be updated. The include-root is where include files are found.");
throw new Exception("Incorrect number of arguments supplied");
}
overwriteProperties.setBaseProperties(new File(args[0]));
overwriteProperties.setProperties(new File(args[1]));
overwriteProperties.setIncludeRoot(new File(args[2]));
overwriteProperties.execute();
}
catch (FileNotFoundException ex)
{
System.err.println(ex.getMessage());
}
catch (IOException ex)
{
System.err.println(ex.getMessage());
}
catch (SecurityException ex)
{
System.err.println(ex.getMessage());
}
}
/** Description of the Method */
public void execute() throws FileNotFoundException, IOException, SecurityException
{
if (verbose)
{
System.out.println("Merging into file " + getBaseProperties() + " file " + getProperties());
}
if (!getBaseProperties().exists())
{
throw new FileNotFoundException("Could not find file:" + getBaseProperties());
}
if (!getProperties().exists())
{
throw new FileNotFoundException("Could not find file:" + getProperties());
}
if (!getIncludeRoot().exists() || !getIncludeRoot().isDirectory())
{
throw new FileNotFoundException("Could not find directory:" + getIncludeRoot());
}
BufferedReader reader = new BufferedReader(new FileReader(baseProperties));
int index = 0;
String key = null;
String line = null;
while ((line = reader.readLine()) != null)
{
StringTokenizer tokenizer = new StringTokenizer(line, "=");
baseArray.add(index, line);
if (verbose)
{
System.out.println("While reading baseArray[" + index + "] = " + line);
}
if (tokenizer.countTokens() >= 1
&& !line.startsWith("#")
&& !line.startsWith("include")
&& !line.startsWith("module.packages"))
{
key = tokenizer.nextToken().trim();
if (key != null && key.length() > 0)
{
baseMap.put(key, new Integer(index));
if (verbose)
{
System.out.println("baseMap[" + key + "," + index + "]");
}
}
}
index++;
}
reader.close();
if (verbose)
{
System.out.println("\nOverwrite with Delta\n");
}
readProperties(properties, index);
boolean flags[] = removeProperties();
baseArray.trimToSize();
writeToFile(flags);
}
/**
* Description of the Method
*
* @param flags Description of the Parameter
* @exception FileNotFoundException Description of the Exception
* @exception IOException Description of the Exception
*/
public void writeToFile(boolean[] flags)
throws FileNotFoundException, IOException
{
FileOutputStream writer = new FileOutputStream(baseProperties);
writer.flush();
for (int i = 0; i < baseArray.size(); i++)
{
if (true == flags[i])
{
if (verbose)
{
System.out.println("Skipping property[" + i + "] = " + baseArray.get(i));
}
continue;
}
if (verbose)
{
System.out.println("Writing property[" + i + "] = " + baseArray.get(i));
}
writer.write(((String) baseArray.get(i)).getBytes());
writer.write(lineSeparator.getBytes());
writer.flush();
}
writer.close();
}
/**
* Description of the Method
*
* @return Description of the Return Value
*/
public boolean[] removeProperties()
{
boolean flags[] = new boolean[baseArray.size()];
for (int i = 0; i < baseArray.size(); i++)
{
flags[i] = false;
}
for (int ix = 0; ix < removeArray.size(); ix++)
{
String prefix = (String) removeArray.get(ix);
for (int iy = 0; iy < baseArray.size(); iy++)
{
String line = (String) baseArray.get(iy);
if (line.startsWith(prefix))
{
flags[iy] = true;
if (verbose)
{
System.out.println("flagging removal of property: " + line);
}
}
}
}
return flags;
}
/**
* Reads in the properties from the specified file
*
* @param propFile Description of the Parameter
* @param index Description of the Parameter
* @exception FileNotFoundException Description of the Exception
* @exception IOException Description of the Exception
*/
public void readProperties(File propFile, int index)
throws FileNotFoundException, IOException
{
BufferedReader reader = new BufferedReader(new FileReader(propFile));
String key = null;
String line = null;
while ((line = reader.readLine()) != null)
{
StringTokenizer tokenizer = new StringTokenizer(line, "=");
int count = tokenizer.countTokens();
if (count == 2 && line.startsWith("include"))
{
key = tokenizer.nextToken().trim();
File includeFile = new File(includeRoot + tokenizer.nextToken().trim());
if (verbose)
{
System.out.println("include File = " + includeFile);
}
readProperties(includeFile, index);
continue;
}
if (count >= 1 && line.startsWith("module.packages"))
{
baseArray.add(index, line);
if (verbose)
{
System.out.println("Adding module.package to baseArray[" + index + "] = " + line);
}
index++;
key = line.trim();
if (baseMap.containsKey(key))
{
int ix = ((Integer) baseMap.get(key)).intValue();
baseArray.set(ix, line);
if (verbose)
{
System.out.println("Resetting baseArray[" + ix + "] = " + line);
}
}
continue;
}
if (count >= 1 && line.startsWith("-"))
{
// remove from base
String prefix = line.trim().substring(1);
removeArray.add(prefix);
if (verbose)
{
System.out.println("Flagging for removal = " + line);
}
continue;
}
if (count >= 1 && !line.startsWith("#"))
{
key = tokenizer.nextToken().trim();
if (key != null && key.length() > 0)
{
if (baseMap.containsKey(key))
{
int ix = ((Integer) baseMap.get(key)).intValue();
baseArray.set(ix, line);
if (verbose)
{
System.out.println("Resetting baseArray[" + ix + "] = " + line);
}
}
else
{
baseArray.add(index, line);
if (verbose)
{
System.out.println("Adding new entry to baseArray[" + index + "] = " + line);
}
baseMap.put(key, new Integer(index));
if (verbose)
{
System.out.println("baseMap[" + key + "," + index + "]");
}
index++;
}
}
}
}
reader.close();
}
}
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