You are viewing a plain text version of this content. The canonical link for it is here.
Posted to user@ant.apache.org by Matthew Oatham <ma...@hotmail.com> on 2003/03/06 15:13:17 UTC
Merging text files
Hi,
I am slowly reading through Java Development with ANT and have stumbled across FilterChains, FilterReaders and Mappers. Looks interesting and I can see it allows you to modify text files but is there a way to merge two text files to produce one new text file.
An example could be
header.web.xml - xml file specifying xml headers such as dts location etc...
body.web.xml - xml file containing generic content
in this case the output would be the merge of a chosen header.web.xml depending on some property such as application.server with the default body.web.xml
Any ideas?
Thanks.
Matt
Re: Merging text files
Posted by kriss <ma...@hotmail.com>.
I did this way and never had problem, maybe I'm just lucky ?
<concat destfile="file.xml">
<filelist dir="." files="header.xml"/>
<fileset dir="${test.dir}" includes="**/web.xml"/>
<filelist dir="." files="footer.xml"/>
</concat>
Kriss
----- Original Message -----
From: Frot
To: Ant Users List
Sent: Thursday, March 06, 2003 4:40 PM
Subject: Re: Merging text files
The standard concat task just takes all the files and concatenates them.
disregarding any intended order.
The ConcatenateFiles task let you at least choose which file the concatenated
resulting file should begin and end with. Which is a huge gain if you
create e.g. XML files....
Fred
*********** REPLY SEPARATOR ***********
On 06/03/2003 at 15:29 kriss wrote:
>Why don't you use the standard concat task ?
>
>Kriss
> ----- Original Message -----
> From: Frot
> To: Ant Users List
> Sent: Thursday, March 06, 2003 3:25 PM
> Subject: Re: Merging text files
>
>
> Hi,
>
> Below you find the ConcatenateFiles (Origin : Chris Winters) task I use
>
> Use as follows :
>
> <taskdef name="concatenate" classname=".......ConcatenateFiles"/>
>
> <concatenate file = "file.txt"
> beginfile = "header.web.xml"
> endfile = "body.web.xml">
> </concatenate>
>
> or with a files set:
>
> <concatenate file = "file.txt"
> beginfile = "header.web.xml"
> endfile = "body.web.xml">
> <fileset dir="./webxml">
> <exclude name="**/web.xml"/>
> </fileset>
> </concatenate>
>
> Have fun,
>
> Fred
>
> Source (there might be a newer version though) :
>
> // $Id: ConcatenateFiles.java,v 1.3 2001/05/07 18:02:17 cwinters Exp $
>
> /**
> *
> * Copyright (c) 2001 Optiron, Inc. All Rights Reserved
> *
> * This software is licenced under the Apache Software License. See:
> *
> * http://www.apache.org/LICENSE.txt
> *
> * for the license contents
> */
>
> import java.io.BufferedReader;
> import java.io.File;
> import java.io.FileReader;
> import java.io.FileWriter;
> import java.io.IOException;
> import java.util.ArrayList;
> import java.util.Iterator;
> import java.util.List;
> import org.apache.tools.ant.*;
> import org.apache.tools.ant.types.*;
>
> /**
> * This class implements a new task for Ant: ConcatenateFiles. As the
>name
> * states, the purpose of this task is to concatenate two or more files
>into a
> * single file with a new name. You can also subsitute a message for one
>or
> * both of the 'begin' and 'end' files
> *
> * Note that this will automatically overwrite the destFile until we
>create
> * some forceOverride methods
> *
> * <p>Arguments for this task:</p>
> * <ul>
> * <li>file: new filename
> * <li>fileset: set of files that are concatenated for the new file
> * </ul>
> *
> * <p>The next two arguments are mutually exclusive:</p>
> * <ul>
> * <li>beginfile: file that begins the new file
> * <li>beginmessage: message that begins the new file
> * </ul>
> *
> * <p>The next two arguments are mutually exclusive:</p>
> * <ul>
> * <li>endfile: file that ends the new file
> * <li>endmessage: message that ends the new file
> * </ul>
> *
> * <p>Usage:</p>
> * <p>First define the taskdef:</p>
> * <pre>
> * <taskdef name="concatenate"
> * classname="com.optiron.ant.ConcatenateFiles"/>
> * </pre>
> * <p>Now define some actions:</p>
> *
> * <p>Concatenate all the files beginning with 'Plumbing' in the base
> * directory to a file called <tt>concat.txt</tt>:</p>
> * <code>
> * <concatenate file="concat.txt">
> * <fileset dir="${basedir}" includes="Plumbing*.*"/>
> * </concatenate>
> * </code>
> * <p>Concatenate all XML files in the <code>deployment</code>
>subdirectory into
> * a file called <code>main.xml</code>:
> * <code>
> * <concatenate file="main.xml">
> * <fileset dir="${basedir}/deployment" includes="**\/xml"/>
> * </concatenate>
> * </code>
> *
> * <p>More about Ant:
> * <a
>href="http://jakarta.apache.org/ant/">http://jakarta.apache.org/ant/</a></p>
> *
> * @author Chris Winters <a
>href="mailto:cwinters@optiron.com">cwinters@optiron.com</a>
> * @version $Revision: 1 $
> */
>
> public class ConcatenateFiles
> extends Task
> {
> protected File file = null;
> protected File destFile = null;
> protected File beginFile = null;
> protected File endFile = null;
> protected String beginMessage = null;
> protected String endMessage = null;
> protected List filesets = new ArrayList();
> protected int verbosity = Project.MSG_VERBOSE;
>
> public void setFile( File _set ) { file = _set; }
> public void setBeginfile( File _set ) { beginFile = _set; }
> public void setEndfile( File _set ) { endFile = _set; }
> public void setBeginmessage( String _set ) { beginMessage = _set; }
> public void setEndmessage( String _set ) { endMessage = _set; }
> public void addFileset( FileSet set ) { filesets.add( set ); }
> public void setVerbose( boolean _set )
> {
> if ( _set ) { verbosity = Project.MSG_INFO; }
> else { verbosity = Project.MSG_VERBOSE; }
> }
>
>
> /**
> * Perform the actual action. First validate the parameters passed
> * to the task to ensure everything is sane, then open up the
> * output file. Next do the beginning file/message, process the
> * fileset and then do the ending file/message
> *
> * @exception BuildException for any IO problems (can't read file,
> * can't open file, can't write to file, etc.)
> */
> public void execute()
> throws BuildException
> {
> // Ensure everything is set correctly
>
> validateAttributes();
> FileWriter out = null;
> try
> {
>
> // Open up the new file and a writer to it
>
> destFile = new File( file.getAbsolutePath() );
> if ( destFile.exists() )
> {
> log( "File " + destFile.getAbsolutePath() + " exists;
>removing.", verbosity );
> destFile.delete();
> destFile.createNewFile();
> }
> out = new FileWriter( destFile.getAbsolutePath() );
>
> // If the beginFile is defined, contatenate it
>
> if ( beginFile != null )
> {
> concatenate( out, beginFile );
> log( "Beginning file " + beginFile.getAbsolutePath() + "
>ok", verbosity );
> }
> if ( beginMessage != null )
> {
> concatenate( out, beginMessage );
> log( "Beginning message ok", verbosity );
> }
>
> // Now do the filesets specified
>
> Iterator fsi = filesets.iterator();
> while ( fsi.hasNext() )
> {
> FileSet fs = (FileSet)fsi.next();
> DirectoryScanner ds = fs.getDirectoryScanner( project );
> String[] srcFiles = ds.getIncludedFiles();
> File baseDir = ds.getBasedir().getAbsoluteFile();
> for ( int i = 0; i < srcFiles.length; i++ )
> {
> File readFile = new File( baseDir, srcFiles[i] );
> concatenate( out, readFile );
> log( "Fileset file " + readFile.getAbsolutePath() + " ok",
>verbosity );
> }
> }
>
> // And if the endFile is defined, do it
>
> if ( endFile != null )
> {
> concatenate( out, endFile );
> log( "Ending file " + endFile.getAbsolutePath() + " ok",
>verbosity );
> }
> if ( endMessage != null )
> {
> concatenate( out, endMessage );
> log( "Ending message ok", verbosity );
> }
> log( "Created new file (" + destFile.getAbsolutePath() + ")
>successfully" );
> out.close();
> }
> catch ( IOException ioe )
> {
> throw new BuildException( "Error with the filesystem: " +
>ioe.getMessage() );
> }
> finally
> {
> try
> {
> if ( out != null ) { out.close(); }
> }
> catch ( IOException ioe )
> {
> throw new BuildException( "Cannot close output buffer!
>Error: " + ioe.getMessage() );
> }
> }
> }
>
> /**
> * Ensure we have the right attributes. Failure conditions are:
> *
> * <ul>
> * <li>destination file is not specified</li>
> * <li>both 'beginmessage' and 'beginfile' are specified</li>
> * <li>both 'endmessage' and 'endfile' are specified</li>
> * <li>no messages or files are specified at all</li>
> * </ul>
> *
> * @throws BuildException if one of the specifications is not met
> */
> protected void validateAttributes()
> throws BuildException
> {
> if ( file == null )
> {
> throw new BuildException("You must specify a destfile." );
> }
> if ( beginMessage != null && beginFile != null )
> {
> throw new BuildException( "You cannot specify both
>'beginmessage' and 'beginfile'" );
> }
> if ( endMessage != null && endFile != null )
> {
> throw new BuildException( "You cannot specify both
>'endmessage' and 'endfile'" );
> }
> boolean hasMessage = ( beginMessage != null || endMessage !=
>null );
> boolean hasFile = ( beginFile != null || endFile != null ||
>filesets.size() > 0 );
> if ( ! hasMessage && ! hasFile )
> {
> throw new BuildException( "You must specify one or more
>messages or files." );
> }
> }
>
> /**
> * Concatenate two text files
> *
> * @param to file object appending to
> * @param from file whose contents we're appending
> * @throws IOException if we can't read the file or if the actual
> * write fails
> */
> private static void concatenate( FileWriter to, File from )
> throws IOException
> {
> BufferedReader in = new BufferedReader( new FileReader( from ) );
> String inBuf = new String();
> StringBuffer contents = new StringBuffer();
> while ( ( inBuf = in.readLine() ) != null )
> {
> contents.append( inBuf + "\r\n" );
> }
> in.close();
> concatenate( to, contents.toString() );
> }
>
> /**
> * Concatenate a string to a text file
> *
> * @param to file object appending to
> * @param from string we're appending
> * @throws IOException if the write fails
> */
> private static void concatenate( FileWriter to, String from )
> throws IOException
> {
> to.write( from );
> }
> }
>
>
> *********** REPLY SEPARATOR ***********
>
> On 06/03/2003 at 14:13 Matthew Oatham wrote:
>
> >Hi,
> >
> >I am slowly reading through Java Development with ANT and have stumbled
> >across FilterChains, FilterReaders and Mappers. Looks interesting and I
> >can see it allows you to modify text files but is there a way to merge
>two
> >text files to produce one new text file.
> >
> >An example could be
> >
> >header.web.xml - xml file specifying xml headers such as dts location
> >etc..
> >body.web.xml - xml file containing generic content
> >
> >in this case the output would be the merge of a chosen header.web.xml
> >depending on some property such as application.server with the default
> >body.web.xml
> >
> >Any ideas?
> >
> >Thanks
> >
> >Matt
>
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: user-unsubscribe@ant.apache.org
> For additional commands, e-mail: user-help@ant.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: user-unsubscribe@ant.apache.org
For additional commands, e-mail: user-help@ant.apache.org
Re: Merging text files
Posted by Frot <fr...@lycos.at>.
The standard concat task just takes all the files and concatenates them.
disregarding any intended order.
The ConcatenateFiles task let you at least choose which file the concatenated
resulting file should begin and end with. Which is a huge gain if you
create e.g. XML files....
Fred
*********** REPLY SEPARATOR ***********
On 06/03/2003 at 15:29 kriss wrote:
>Why don't you use the standard concat task ?
>
>Kriss
> ----- Original Message -----
> From: Frot
> To: Ant Users List
> Sent: Thursday, March 06, 2003 3:25 PM
> Subject: Re: Merging text files
>
>
> Hi,
>
> Below you find the ConcatenateFiles (Origin : Chris Winters) task I use
>
> Use as follows :
>
> <taskdef name="concatenate" classname=".......ConcatenateFiles"/>
>
> <concatenate file = "file.txt"
> beginfile = "header.web.xml"
> endfile = "body.web.xml">
> </concatenate>
>
> or with a files set:
>
> <concatenate file = "file.txt"
> beginfile = "header.web.xml"
> endfile = "body.web.xml">
> <fileset dir="./webxml">
> <exclude name="**/web.xml"/>
> </fileset>
> </concatenate>
>
> Have fun,
>
> Fred
>
> Source (there might be a newer version though) :
>
> // $Id: ConcatenateFiles.java,v 1.3 2001/05/07 18:02:17 cwinters Exp $
>
> /**
> *
> * Copyright (c) 2001 Optiron, Inc. All Rights Reserved
> *
> * This software is licenced under the Apache Software License. See:
> *
> * http://www.apache.org/LICENSE.txt
> *
> * for the license contents
> */
>
> import java.io.BufferedReader;
> import java.io.File;
> import java.io.FileReader;
> import java.io.FileWriter;
> import java.io.IOException;
> import java.util.ArrayList;
> import java.util.Iterator;
> import java.util.List;
> import org.apache.tools.ant.*;
> import org.apache.tools.ant.types.*;
>
> /**
> * This class implements a new task for Ant: ConcatenateFiles. As the
>name
> * states, the purpose of this task is to concatenate two or more files
>into a
> * single file with a new name. You can also subsitute a message for one
>or
> * both of the 'begin' and 'end' files
> *
> * Note that this will automatically overwrite the destFile until we
>create
> * some forceOverride methods
> *
> * <p>Arguments for this task:</p>
> * <ul>
> * <li>file: new filename
> * <li>fileset: set of files that are concatenated for the new file
> * </ul>
> *
> * <p>The next two arguments are mutually exclusive:</p>
> * <ul>
> * <li>beginfile: file that begins the new file
> * <li>beginmessage: message that begins the new file
> * </ul>
> *
> * <p>The next two arguments are mutually exclusive:</p>
> * <ul>
> * <li>endfile: file that ends the new file
> * <li>endmessage: message that ends the new file
> * </ul>
> *
> * <p>Usage:</p>
> * <p>First define the taskdef:</p>
> * <pre>
> * <taskdef name="concatenate"
> * classname="com.optiron.ant.ConcatenateFiles"/>
> * </pre>
> * <p>Now define some actions:</p>
> *
> * <p>Concatenate all the files beginning with 'Plumbing' in the base
> * directory to a file called <tt>concat.txt</tt>:</p>
> * <code>
> * <concatenate file="concat.txt">
> * <fileset dir="${basedir}" includes="Plumbing*.*"/>
> * </concatenate>
> * </code>
> * <p>Concatenate all XML files in the <code>deployment</code>
>subdirectory into
> * a file called <code>main.xml</code>:
> * <code>
> * <concatenate file="main.xml">
> * <fileset dir="${basedir}/deployment" includes="**\/xml"/>
> * </concatenate>
> * </code>
> *
> * <p>More about Ant:
> * <a
>href="http://jakarta.apache.org/ant/">http://jakarta.apache.org/ant/</a></p>
> *
> * @author Chris Winters <a
>href="mailto:cwinters@optiron.com">cwinters@optiron.com</a>
> * @version $Revision: 1 $
> */
>
> public class ConcatenateFiles
> extends Task
> {
> protected File file = null;
> protected File destFile = null;
> protected File beginFile = null;
> protected File endFile = null;
> protected String beginMessage = null;
> protected String endMessage = null;
> protected List filesets = new ArrayList();
> protected int verbosity = Project.MSG_VERBOSE;
>
> public void setFile( File _set ) { file = _set; }
> public void setBeginfile( File _set ) { beginFile = _set; }
> public void setEndfile( File _set ) { endFile = _set; }
> public void setBeginmessage( String _set ) { beginMessage = _set; }
> public void setEndmessage( String _set ) { endMessage = _set; }
> public void addFileset( FileSet set ) { filesets.add( set ); }
> public void setVerbose( boolean _set )
> {
> if ( _set ) { verbosity = Project.MSG_INFO; }
> else { verbosity = Project.MSG_VERBOSE; }
> }
>
>
> /**
> * Perform the actual action. First validate the parameters passed
> * to the task to ensure everything is sane, then open up the
> * output file. Next do the beginning file/message, process the
> * fileset and then do the ending file/message
> *
> * @exception BuildException for any IO problems (can't read file,
> * can't open file, can't write to file, etc.)
> */
> public void execute()
> throws BuildException
> {
> // Ensure everything is set correctly
>
> validateAttributes();
> FileWriter out = null;
> try
> {
>
> // Open up the new file and a writer to it
>
> destFile = new File( file.getAbsolutePath() );
> if ( destFile.exists() )
> {
> log( "File " + destFile.getAbsolutePath() + " exists;
>removing.", verbosity );
> destFile.delete();
> destFile.createNewFile();
> }
> out = new FileWriter( destFile.getAbsolutePath() );
>
> // If the beginFile is defined, contatenate it
>
> if ( beginFile != null )
> {
> concatenate( out, beginFile );
> log( "Beginning file " + beginFile.getAbsolutePath() + "
>ok", verbosity );
> }
> if ( beginMessage != null )
> {
> concatenate( out, beginMessage );
> log( "Beginning message ok", verbosity );
> }
>
> // Now do the filesets specified
>
> Iterator fsi = filesets.iterator();
> while ( fsi.hasNext() )
> {
> FileSet fs = (FileSet)fsi.next();
> DirectoryScanner ds = fs.getDirectoryScanner( project );
> String[] srcFiles = ds.getIncludedFiles();
> File baseDir = ds.getBasedir().getAbsoluteFile();
> for ( int i = 0; i < srcFiles.length; i++ )
> {
> File readFile = new File( baseDir, srcFiles[i] );
> concatenate( out, readFile );
> log( "Fileset file " + readFile.getAbsolutePath() + " ok",
>verbosity );
> }
> }
>
> // And if the endFile is defined, do it
>
> if ( endFile != null )
> {
> concatenate( out, endFile );
> log( "Ending file " + endFile.getAbsolutePath() + " ok",
>verbosity );
> }
> if ( endMessage != null )
> {
> concatenate( out, endMessage );
> log( "Ending message ok", verbosity );
> }
> log( "Created new file (" + destFile.getAbsolutePath() + ")
>successfully" );
> out.close();
> }
> catch ( IOException ioe )
> {
> throw new BuildException( "Error with the filesystem: " +
>ioe.getMessage() );
> }
> finally
> {
> try
> {
> if ( out != null ) { out.close(); }
> }
> catch ( IOException ioe )
> {
> throw new BuildException( "Cannot close output buffer!
>Error: " + ioe.getMessage() );
> }
> }
> }
>
> /**
> * Ensure we have the right attributes. Failure conditions are:
> *
> * <ul>
> * <li>destination file is not specified</li>
> * <li>both 'beginmessage' and 'beginfile' are specified</li>
> * <li>both 'endmessage' and 'endfile' are specified</li>
> * <li>no messages or files are specified at all</li>
> * </ul>
> *
> * @throws BuildException if one of the specifications is not met
> */
> protected void validateAttributes()
> throws BuildException
> {
> if ( file == null )
> {
> throw new BuildException("You must specify a destfile." );
> }
> if ( beginMessage != null && beginFile != null )
> {
> throw new BuildException( "You cannot specify both
>'beginmessage' and 'beginfile'" );
> }
> if ( endMessage != null && endFile != null )
> {
> throw new BuildException( "You cannot specify both
>'endmessage' and 'endfile'" );
> }
> boolean hasMessage = ( beginMessage != null || endMessage !=
>null );
> boolean hasFile = ( beginFile != null || endFile != null ||
>filesets.size() > 0 );
> if ( ! hasMessage && ! hasFile )
> {
> throw new BuildException( "You must specify one or more
>messages or files." );
> }
> }
>
> /**
> * Concatenate two text files
> *
> * @param to file object appending to
> * @param from file whose contents we're appending
> * @throws IOException if we can't read the file or if the actual
> * write fails
> */
> private static void concatenate( FileWriter to, File from )
> throws IOException
> {
> BufferedReader in = new BufferedReader( new FileReader( from ) );
> String inBuf = new String();
> StringBuffer contents = new StringBuffer();
> while ( ( inBuf = in.readLine() ) != null )
> {
> contents.append( inBuf + "\r\n" );
> }
> in.close();
> concatenate( to, contents.toString() );
> }
>
> /**
> * Concatenate a string to a text file
> *
> * @param to file object appending to
> * @param from string we're appending
> * @throws IOException if the write fails
> */
> private static void concatenate( FileWriter to, String from )
> throws IOException
> {
> to.write( from );
> }
> }
>
>
> *********** REPLY SEPARATOR ***********
>
> On 06/03/2003 at 14:13 Matthew Oatham wrote:
>
> >Hi,
> >
> >I am slowly reading through Java Development with ANT and have stumbled
> >across FilterChains, FilterReaders and Mappers. Looks interesting and I
> >can see it allows you to modify text files but is there a way to merge
>two
> >text files to produce one new text file.
> >
> >An example could be
> >
> >header.web.xml - xml file specifying xml headers such as dts location
> >etc..
> >body.web.xml - xml file containing generic content
> >
> >in this case the output would be the merge of a chosen header.web.xml
> >depending on some property such as application.server with the default
> >body.web.xml
> >
> >Any ideas?
> >
> >Thanks
> >
> >Matt
>
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: user-unsubscribe@ant.apache.org
> For additional commands, e-mail: user-help@ant.apache.org
Re: Merging text files
Posted by kriss <ma...@hotmail.com>.
Why don't you use the standard concat task ?
Kriss
----- Original Message -----
From: Frot
To: Ant Users List
Sent: Thursday, March 06, 2003 3:25 PM
Subject: Re: Merging text files
Hi,
Below you find the ConcatenateFiles (Origin : Chris Winters) task I use.
Use as follows :
<taskdef name="concatenate" classname=".......ConcatenateFiles"/>
<concatenate file = "file.txt"
beginfile = "header.web.xml"
endfile = "body.web.xml">
</concatenate>
or with a files set:
<concatenate file = "file.txt"
beginfile = "header.web.xml"
endfile = "body.web.xml">
<fileset dir="./webxml">
<exclude name="**/web.xml"/>
</fileset>
</concatenate>
Have fun,
Fred
Source (there might be a newer version though) :
// $Id: ConcatenateFiles.java,v 1.3 2001/05/07 18:02:17 cwinters Exp $
/**
*
* Copyright (c) 2001 Optiron, Inc. All Rights Reserved.
*
* This software is licenced under the Apache Software License. See:
*
* http://www.apache.org/LICENSE.txt
*
* for the license contents.
*/
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.apache.tools.ant.*;
import org.apache.tools.ant.types.*;
/**
* This class implements a new task for Ant: ConcatenateFiles. As the name
* states, the purpose of this task is to concatenate two or more files into a
* single file with a new name. You can also subsitute a message for one or
* both of the 'begin' and 'end' files.
*
* Note that this will automatically overwrite the destFile until we create
* some forceOverride methods.
*
* <p>Arguments for this task:</p>
* <ul>
* <li>file: new filename
* <li>fileset: set of files that are concatenated for the new file
* </ul>
*
* <p>The next two arguments are mutually exclusive:</p>
* <ul>
* <li>beginfile: file that begins the new file
* <li>beginmessage: message that begins the new file
* </ul>
*
* <p>The next two arguments are mutually exclusive:</p>
* <ul>
* <li>endfile: file that ends the new file
* <li>endmessage: message that ends the new file
* </ul>
*
* <p>Usage:</p>
* <p>First define the taskdef:</p>
* <pre>
* <taskdef name="concatenate"
* classname="com.optiron.ant.ConcatenateFiles"/>
* </pre>
* <p>Now define some actions:</p>
*
* <p>Concatenate all the files beginning with 'Plumbing' in the base
* directory to a file called <tt>concat.txt</tt>:</p>
* <code>
* <concatenate file="concat.txt">
* <fileset dir="${basedir}" includes="Plumbing*.*"/>
* </concatenate>
* </code>
* <p>Concatenate all XML files in the <code>deployment</code> subdirectory into
* a file called <code>main.xml</code>:
* <code>
* <concatenate file="main.xml">
* <fileset dir="${basedir}/deployment" includes="**\/xml"/>
* </concatenate>
* </code>
*
* <p>More about Ant:
* <a href="http://jakarta.apache.org/ant/">http://jakarta.apache.org/ant/</a></p>
*
* @author Chris Winters <a href="mailto:cwinters@optiron.com">cwinters@optiron.com</a>
* @version $Revision: 1 $
*/
public class ConcatenateFiles
extends Task
{
protected File file = null;
protected File destFile = null;
protected File beginFile = null;
protected File endFile = null;
protected String beginMessage = null;
protected String endMessage = null;
protected List filesets = new ArrayList();
protected int verbosity = Project.MSG_VERBOSE;
public void setFile( File _set ) { file = _set; }
public void setBeginfile( File _set ) { beginFile = _set; }
public void setEndfile( File _set ) { endFile = _set; }
public void setBeginmessage( String _set ) { beginMessage = _set; }
public void setEndmessage( String _set ) { endMessage = _set; }
public void addFileset( FileSet set ) { filesets.add( set ); }
public void setVerbose( boolean _set )
{
if ( _set ) { verbosity = Project.MSG_INFO; }
else { verbosity = Project.MSG_VERBOSE; }
}
/**
* Perform the actual action. First validate the parameters passed
* to the task to ensure everything is sane, then open up the
* output file. Next do the beginning file/message, process the
* fileset and then do the ending file/message.
*
* @exception BuildException for any IO problems (can't read file,
* can't open file, can't write to file, etc.)
*/
public void execute()
throws BuildException
{
// Ensure everything is set correctly
validateAttributes();
FileWriter out = null;
try
{
// Open up the new file and a writer to it.
destFile = new File( file.getAbsolutePath() );
if ( destFile.exists() )
{
log( "File " + destFile.getAbsolutePath() + " exists; removing.", verbosity );
destFile.delete();
destFile.createNewFile();
}
out = new FileWriter( destFile.getAbsolutePath() );
// If the beginFile is defined, contatenate it
if ( beginFile != null )
{
concatenate( out, beginFile );
log( "Beginning file " + beginFile.getAbsolutePath() + " ok", verbosity );
}
if ( beginMessage != null )
{
concatenate( out, beginMessage );
log( "Beginning message ok", verbosity );
}
// Now do the filesets specified
Iterator fsi = filesets.iterator();
while ( fsi.hasNext() )
{
FileSet fs = (FileSet)fsi.next();
DirectoryScanner ds = fs.getDirectoryScanner( project );
String[] srcFiles = ds.getIncludedFiles();
File baseDir = ds.getBasedir().getAbsoluteFile();
for ( int i = 0; i < srcFiles.length; i++ )
{
File readFile = new File( baseDir, srcFiles[i] );
concatenate( out, readFile );
log( "Fileset file " + readFile.getAbsolutePath() + " ok", verbosity );
}
}
// And if the endFile is defined, do it
if ( endFile != null )
{
concatenate( out, endFile );
log( "Ending file " + endFile.getAbsolutePath() + " ok", verbosity );
}
if ( endMessage != null )
{
concatenate( out, endMessage );
log( "Ending message ok", verbosity );
}
log( "Created new file (" + destFile.getAbsolutePath() + ") successfully" );
out.close();
}
catch ( IOException ioe )
{
throw new BuildException( "Error with the filesystem: " + ioe.getMessage() );
}
finally
{
try
{
if ( out != null ) { out.close(); }
}
catch ( IOException ioe )
{
throw new BuildException( "Cannot close output buffer! Error: " + ioe.getMessage() );
}
}
}
/**
* Ensure we have the right attributes. Failure conditions are:
*
* <ul>
* <li>destination file is not specified</li>
* <li>both 'beginmessage' and 'beginfile' are specified</li>
* <li>both 'endmessage' and 'endfile' are specified</li>
* <li>no messages or files are specified at all</li>
* </ul>
*
* @throws BuildException if one of the specifications is not met.
*/
protected void validateAttributes()
throws BuildException
{
if ( file == null )
{
throw new BuildException("You must specify a destfile." );
}
if ( beginMessage != null && beginFile != null )
{
throw new BuildException( "You cannot specify both 'beginmessage' and 'beginfile'" );
}
if ( endMessage != null && endFile != null )
{
throw new BuildException( "You cannot specify both 'endmessage' and 'endfile'" );
}
boolean hasMessage = ( beginMessage != null || endMessage != null );
boolean hasFile = ( beginFile != null || endFile != null || filesets.size() > 0 );
if ( ! hasMessage && ! hasFile )
{
throw new BuildException( "You must specify one or more messages or files." );
}
}
/**
* Concatenate two text files
*
* @param to file object appending to
* @param from file whose contents we're appending
* @throws IOException if we can't read the file or if the actual
* write fails
*/
private static void concatenate( FileWriter to, File from )
throws IOException
{
BufferedReader in = new BufferedReader( new FileReader( from ) );
String inBuf = new String();
StringBuffer contents = new StringBuffer();
while ( ( inBuf = in.readLine() ) != null )
{
contents.append( inBuf + "\r\n" );
}
in.close();
concatenate( to, contents.toString() );
}
/**
* Concatenate a string to a text file
*
* @param to file object appending to
* @param from string we're appending
* @throws IOException if the write fails
*/
private static void concatenate( FileWriter to, String from )
throws IOException
{
to.write( from );
}
}
*********** REPLY SEPARATOR ***********
On 06/03/2003 at 14:13 Matthew Oatham wrote:
>Hi,
>
>I am slowly reading through Java Development with ANT and have stumbled
>across FilterChains, FilterReaders and Mappers. Looks interesting and I
>can see it allows you to modify text files but is there a way to merge two
>text files to produce one new text file.
>
>An example could be
>
>header.web.xml - xml file specifying xml headers such as dts location
>etc..
>body.web.xml - xml file containing generic content
>
>in this case the output would be the merge of a chosen header.web.xml
>depending on some property such as application.server with the default
>body.web.xml
>
>Any ideas?
>
>Thanks
>
>Matt
---------------------------------------------------------------------
To unsubscribe, e-mail: user-unsubscribe@ant.apache.org
For additional commands, e-mail: user-help@ant.apache.org
Re: Merging text files
Posted by Frot <fr...@lycos.at>.
Hi,
Below you find the ConcatenateFiles (Origin : Chris Winters) task I use.
Use as follows :
<taskdef name="concatenate" classname=".......ConcatenateFiles"/>
<concatenate file = "file.txt"
beginfile = "header.web.xml"
endfile = "body.web.xml">
</concatenate>
or with a files set:
<concatenate file = "file.txt"
beginfile = "header.web.xml"
endfile = "body.web.xml">
<fileset dir="./webxml">
<exclude name="**/web.xml"/>
</fileset>
</concatenate>
Have fun,
Fred
Source (there might be a newer version though) :
// $Id: ConcatenateFiles.java,v 1.3 2001/05/07 18:02:17 cwinters Exp $
/**
*
* Copyright (c) 2001 Optiron, Inc. All Rights Reserved.
*
* This software is licenced under the Apache Software License. See:
*
* http://www.apache.org/LICENSE.txt
*
* for the license contents.
*/
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.apache.tools.ant.*;
import org.apache.tools.ant.types.*;
/**
* This class implements a new task for Ant: ConcatenateFiles. As the name
* states, the purpose of this task is to concatenate two or more files into a
* single file with a new name. You can also subsitute a message for one or
* both of the 'begin' and 'end' files.
*
* Note that this will automatically overwrite the destFile until we create
* some forceOverride methods.
*
* <p>Arguments for this task:</p>
* <ul>
* <li>file: new filename
* <li>fileset: set of files that are concatenated for the new file
* </ul>
*
* <p>The next two arguments are mutually exclusive:</p>
* <ul>
* <li>beginfile: file that begins the new file
* <li>beginmessage: message that begins the new file
* </ul>
*
* <p>The next two arguments are mutually exclusive:</p>
* <ul>
* <li>endfile: file that ends the new file
* <li>endmessage: message that ends the new file
* </ul>
*
* <p>Usage:</p>
* <p>First define the taskdef:</p>
* <pre>
* <taskdef name="concatenate"
* classname="com.optiron.ant.ConcatenateFiles"/>
* </pre>
* <p>Now define some actions:</p>
*
* <p>Concatenate all the files beginning with 'Plumbing' in the base
* directory to a file called <tt>concat.txt</tt>:</p>
* <code>
* <concatenate file="concat.txt">
* <fileset dir="${basedir}" includes="Plumbing*.*"/>
* </concatenate>
* </code>
* <p>Concatenate all XML files in the <code>deployment</code> subdirectory into
* a file called <code>main.xml</code>:
* <code>
* <concatenate file="main.xml">
* <fileset dir="${basedir}/deployment" includes="**\/xml"/>
* </concatenate>
* </code>
*
* <p>More about Ant:
* <a href="http://jakarta.apache.org/ant/">http://jakarta.apache.org/ant/</a></p>
*
* @author Chris Winters <a href="mailto:cwinters@optiron.com">cwinters@optiron.com</a>
* @version $Revision: 1 $
*/
public class ConcatenateFiles
extends Task
{
protected File file = null;
protected File destFile = null;
protected File beginFile = null;
protected File endFile = null;
protected String beginMessage = null;
protected String endMessage = null;
protected List filesets = new ArrayList();
protected int verbosity = Project.MSG_VERBOSE;
public void setFile( File _set ) { file = _set; }
public void setBeginfile( File _set ) { beginFile = _set; }
public void setEndfile( File _set ) { endFile = _set; }
public void setBeginmessage( String _set ) { beginMessage = _set; }
public void setEndmessage( String _set ) { endMessage = _set; }
public void addFileset( FileSet set ) { filesets.add( set ); }
public void setVerbose( boolean _set )
{
if ( _set ) { verbosity = Project.MSG_INFO; }
else { verbosity = Project.MSG_VERBOSE; }
}
/**
* Perform the actual action. First validate the parameters passed
* to the task to ensure everything is sane, then open up the
* output file. Next do the beginning file/message, process the
* fileset and then do the ending file/message.
*
* @exception BuildException for any IO problems (can't read file,
* can't open file, can't write to file, etc.)
*/
public void execute()
throws BuildException
{
// Ensure everything is set correctly
validateAttributes();
FileWriter out = null;
try
{
// Open up the new file and a writer to it.
destFile = new File( file.getAbsolutePath() );
if ( destFile.exists() )
{
log( "File " + destFile.getAbsolutePath() + " exists; removing.", verbosity );
destFile.delete();
destFile.createNewFile();
}
out = new FileWriter( destFile.getAbsolutePath() );
// If the beginFile is defined, contatenate it
if ( beginFile != null )
{
concatenate( out, beginFile );
log( "Beginning file " + beginFile.getAbsolutePath() + " ok", verbosity );
}
if ( beginMessage != null )
{
concatenate( out, beginMessage );
log( "Beginning message ok", verbosity );
}
// Now do the filesets specified
Iterator fsi = filesets.iterator();
while ( fsi.hasNext() )
{
FileSet fs = (FileSet)fsi.next();
DirectoryScanner ds = fs.getDirectoryScanner( project );
String[] srcFiles = ds.getIncludedFiles();
File baseDir = ds.getBasedir().getAbsoluteFile();
for ( int i = 0; i < srcFiles.length; i++ )
{
File readFile = new File( baseDir, srcFiles[i] );
concatenate( out, readFile );
log( "Fileset file " + readFile.getAbsolutePath() + " ok", verbosity );
}
}
// And if the endFile is defined, do it
if ( endFile != null )
{
concatenate( out, endFile );
log( "Ending file " + endFile.getAbsolutePath() + " ok", verbosity );
}
if ( endMessage != null )
{
concatenate( out, endMessage );
log( "Ending message ok", verbosity );
}
log( "Created new file (" + destFile.getAbsolutePath() + ") successfully" );
out.close();
}
catch ( IOException ioe )
{
throw new BuildException( "Error with the filesystem: " + ioe.getMessage() );
}
finally
{
try
{
if ( out != null ) { out.close(); }
}
catch ( IOException ioe )
{
throw new BuildException( "Cannot close output buffer! Error: " + ioe.getMessage() );
}
}
}
/**
* Ensure we have the right attributes. Failure conditions are:
*
* <ul>
* <li>destination file is not specified</li>
* <li>both 'beginmessage' and 'beginfile' are specified</li>
* <li>both 'endmessage' and 'endfile' are specified</li>
* <li>no messages or files are specified at all</li>
* </ul>
*
* @throws BuildException if one of the specifications is not met.
*/
protected void validateAttributes()
throws BuildException
{
if ( file == null )
{
throw new BuildException("You must specify a destfile." );
}
if ( beginMessage != null && beginFile != null )
{
throw new BuildException( "You cannot specify both 'beginmessage' and 'beginfile'" );
}
if ( endMessage != null && endFile != null )
{
throw new BuildException( "You cannot specify both 'endmessage' and 'endfile'" );
}
boolean hasMessage = ( beginMessage != null || endMessage != null );
boolean hasFile = ( beginFile != null || endFile != null || filesets.size() > 0 );
if ( ! hasMessage && ! hasFile )
{
throw new BuildException( "You must specify one or more messages or files." );
}
}
/**
* Concatenate two text files
*
* @param to file object appending to
* @param from file whose contents we're appending
* @throws IOException if we can't read the file or if the actual
* write fails
*/
private static void concatenate( FileWriter to, File from )
throws IOException
{
BufferedReader in = new BufferedReader( new FileReader( from ) );
String inBuf = new String();
StringBuffer contents = new StringBuffer();
while ( ( inBuf = in.readLine() ) != null )
{
contents.append( inBuf + "\r\n" );
}
in.close();
concatenate( to, contents.toString() );
}
/**
* Concatenate a string to a text file
*
* @param to file object appending to
* @param from string we're appending
* @throws IOException if the write fails
*/
private static void concatenate( FileWriter to, String from )
throws IOException
{
to.write( from );
}
}
*********** REPLY SEPARATOR ***********
On 06/03/2003 at 14:13 Matthew Oatham wrote:
>Hi,
>
>I am slowly reading through Java Development with ANT and have stumbled
>across FilterChains, FilterReaders and Mappers. Looks interesting and I
>can see it allows you to modify text files but is there a way to merge two
>text files to produce one new text file.
>
>An example could be
>
>header.web.xml - xml file specifying xml headers such as dts location
>etc..
>body.web.xml - xml file containing generic content
>
>in this case the output would be the merge of a chosen header.web.xml
>depending on some property such as application.server with the default
>body.web.xml
>
>Any ideas?
>
>Thanks
>
>Matt