/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at
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* trunk/opendj3/legal-notices/CDDLv1_0.txt
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* or http://forgerock.org/license/CDDLv1.0.html.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at
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* trunk/opendj3/legal-notices/CDDLv1_0.txt. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Copyright 2012 ForgeRock AS
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*/
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package com.forgerock.opendj.ldap.tools;
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import static com.forgerock.opendj.ldap.tools.ToolConstants.*;
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import static com.forgerock.opendj.ldap.tools.ToolsMessages.*;
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import static com.forgerock.opendj.ldap.tools.Utils.filterExitCode;
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import java.io.*;
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import java.util.List;
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import org.forgerock.i18n.LocalizableException;
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import org.forgerock.i18n.LocalizableMessage;
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import org.forgerock.opendj.ldap.ResultCode;
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import org.forgerock.opendj.ldif.LDIF;
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import org.forgerock.opendj.ldif.LDIFChangeRecordWriter;
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import org.forgerock.opendj.ldif.LDIFEntryReader;
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/**
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* This utility can be used to compare two LDIF files and report the differences
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* in LDIF format.
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*/
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public final class LDIFDiff extends ConsoleApplication
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{
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/**
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* The main method for LDIFDiff tool.
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*
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* @param args
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* The command-line arguments provided to this program.
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*/
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public static void main(final String[] args)
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{
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final int retCode = new LDIFDiff().run(args);
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System.exit(filterExitCode(retCode));
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}
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private LDIFDiff()
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{
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// Nothing to do.
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}
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private int run(final String[] args)
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{
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// Create the command-line argument parser for use with this
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// program.
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final LocalizableMessage toolDescription = INFO_LDIFDIFF_TOOL_DESCRIPTION
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.get();
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final ArgumentParser argParser = new ArgumentParser(
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LDIFDiff.class.getName(), toolDescription, false, true, 2, 2,
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"source target");
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final BooleanArgument showUsage;
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final StringArgument outputFilename;
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try
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{
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outputFilename = new StringArgument("outputFilename",
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OPTION_SHORT_OUTPUT_LDIF_FILENAME, OPTION_LONG_OUTPUT_LDIF_FILENAME,
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false, false, true, INFO_OUTPUT_LDIF_FILE_PLACEHOLDER.get(),
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"stdout", null,
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INFO_LDIFDIFF_DESCRIPTION_OUTPUT_FILENAME
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.get(INFO_OUTPUT_LDIF_FILE_PLACEHOLDER.get()));
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argParser.addArgument(outputFilename);
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showUsage = new BooleanArgument("showUsage", OPTION_SHORT_HELP,
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OPTION_LONG_HELP, INFO_DESCRIPTION_SHOWUSAGE.get());
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argParser.addArgument(showUsage);
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argParser.setUsageArgument(showUsage, getOutputStream());
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}
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catch (final ArgumentException ae)
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{
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final LocalizableMessage message = ERR_CANNOT_INITIALIZE_ARGS.get(ae
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.getMessage());
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println(message);
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return ResultCode.CLIENT_SIDE_PARAM_ERROR.intValue();
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}
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// Parse the command-line arguments provided to this program.
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try
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{
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argParser.parseArguments(args);
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// If we should just display usage or version information,
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// then print it and exit.
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if (argParser.usageOrVersionDisplayed())
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{
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return 0;
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}
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}
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catch (final ArgumentException ae)
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{
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final LocalizableMessage message = ERR_ERROR_PARSING_ARGS.get(ae
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.getMessage());
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println(message);
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return ResultCode.CLIENT_SIDE_PARAM_ERROR.intValue();
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}
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InputStream sourceInputStream = null;
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InputStream targetInputStream = null;
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OutputStream outputStream = null;
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LDIFEntryReader sourceReader = null;
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LDIFEntryReader targetReader = null;
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LDIFChangeRecordWriter outputWriter = null;
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try
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{
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// First source file.
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final List<String> trailingArguments = argParser.getTrailingArguments();
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if (!trailingArguments.get(0).equals("-"))
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{
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try
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{
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sourceInputStream = new FileInputStream(trailingArguments.get(0));
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}
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catch (final FileNotFoundException e)
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{
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final LocalizableMessage message = ERR_LDIF_FILE_CANNOT_OPEN_FOR_READ
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.get(trailingArguments.get(0), e.getLocalizedMessage());
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println(message);
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return ResultCode.CLIENT_SIDE_PARAM_ERROR.intValue();
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}
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}
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// Patch file.
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if (!trailingArguments.get(1).equals("-"))
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{
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try
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{
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targetInputStream = new FileInputStream(trailingArguments.get(1));
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}
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catch (final FileNotFoundException e)
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{
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final LocalizableMessage message = ERR_LDIF_FILE_CANNOT_OPEN_FOR_READ
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.get(trailingArguments.get(1), e.getLocalizedMessage());
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println(message);
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return ResultCode.CLIENT_SIDE_PARAM_ERROR.intValue();
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}
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}
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// Output file.
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if (outputFilename.isPresent() && !outputFilename.getValue().equals("-"))
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{
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try
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{
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outputStream = new FileOutputStream(outputFilename.getValue());
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}
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catch (final FileNotFoundException e)
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{
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final LocalizableMessage message = ERR_LDIF_FILE_CANNOT_OPEN_FOR_WRITE
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.get(outputFilename.getValue(), e.getLocalizedMessage());
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println(message);
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return ResultCode.CLIENT_SIDE_PARAM_ERROR.intValue();
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}
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}
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// Default to stdin/stdout for all streams if not specified.
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if (sourceInputStream == null)
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{
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// Command line parameter was "-".
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sourceInputStream = System.in;
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}
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if (targetInputStream == null)
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{
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targetInputStream = System.in;
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}
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if (outputStream == null)
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{
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outputStream = System.out;
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}
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// Check that we are not attempting to read both the source and target
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// from stdin.
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if (sourceInputStream == targetInputStream)
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{
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final LocalizableMessage message = ERR_LDIFDIFF_MULTIPLE_USES_OF_STDIN
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.get();
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println(message);
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return ResultCode.CLIENT_SIDE_PARAM_ERROR.intValue();
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}
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// Perform the diff.
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sourceReader = new LDIFEntryReader(sourceInputStream);
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targetReader = new LDIFEntryReader(targetInputStream);
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outputWriter = new LDIFChangeRecordWriter(outputStream);
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LDIF.copyTo(LDIF.diff(sourceReader, targetReader), outputWriter);
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}
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catch (final IOException e)
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{
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if (e instanceof LocalizableException)
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{
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println(ERR_LDIFDIFF_DIFF_FAILED.get(((LocalizableException) e)
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.getMessageObject()));
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}
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else
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{
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println(ERR_LDIFDIFF_DIFF_FAILED.get(e.getLocalizedMessage()));
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}
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return ResultCode.CLIENT_SIDE_LOCAL_ERROR.intValue();
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}
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finally
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{
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closeIfNotNull(sourceReader);
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closeIfNotNull(targetReader);
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closeIfNotNull(outputWriter);
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closeIfNotNull(sourceInputStream);
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closeIfNotNull(targetInputStream);
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closeIfNotNull(outputStream);
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}
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return ResultCode.SUCCESS.intValue();
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}
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}
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