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From stef...@hyperreal.org
Subject cvs commit: jakarta-tools/ant/src/main/org/apache/tools/ant/taskdefs Replace.java defaults.properties
Date Tue, 07 Dec 1999 02:25:27 GMT
stefano     99/12/06 18:25:26

  Modified:    ant/src/main/org/apache/tools/ant/taskdefs
                        defaults.properties
  Added:       ant/src/main/org/apache/tools/ant/taskdefs Replace.java
  Log:
  Added the "replace" task that works on the same file, unlike keysubst.
  
  Revision  Changes    Path
  1.10      +1 -0      jakarta-tools/ant/src/main/org/apache/tools/ant/taskdefs/defaults.properties
  
  Index: defaults.properties
  ===================================================================
  RCS file: /home/cvs/jakarta-tools/ant/src/main/org/apache/tools/ant/taskdefs/defaults.properties,v
  retrieving revision 1.9
  retrieving revision 1.10
  diff -u -r1.9 -r1.10
  --- defaults.properties	1999/12/03 00:23:48	1.9
  +++ defaults.properties	1999/12/07 02:25:19	1.10
  @@ -15,3 +15,4 @@
   zip=org.apache.tools.ant.taskdefs.Zip
   gzip=org.apache.tools.ant.taskdefs.GZip
   xslt=org.apache.tools.ant.taskdefs.Xslt
  +replace=org.apache.tools.ant.taskdefs.Replace
  
  
  
  1.1                  jakarta-tools/ant/src/main/org/apache/tools/ant/taskdefs/Replace.java
  
  Index: Replace.java
  ===================================================================
  /*
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 1999 The Apache Software Foundation.  All rights 
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer. 
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution, if
   *    any, must include the following acknowlegement:  
   *       "This product includes software developed by the 
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowlegement may appear in the software itself,
   *    if and wherever such third-party acknowlegements normally appear.
   *
   * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
   *    Foundation" must not be used to endorse or promote products derived
   *    from this software without prior written permission. For written 
   *    permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Group.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   */
  
  package org.apache.tools.ant.taskdefs;
  
  import org.apache.tools.ant.*;
  import java.io.*;
  import java.util.*;
  
  /**
   * Replaces all the occurrences of the given string token with the given
   * string value of the indicated file.
   *
   * @author Stefano Mazzocchi <a href="mailto:stefano@apache.org">stefano@apache.org</a>
   */
  public class Replace extends Task {
      
      private File src = null;
      private File dest = null;
      private String token = null;
      private String value = "";
      
      /**
       * Do the execution.
       */
      public void execute() throws BuildException {
          
          project.log("Replacing " + token + " --> " + value);
          
          if (src == null || token == null ) {
              project.log("File and token must not be null");
              return;            
          }
          
          try {
              BufferedReader br = new BufferedReader(new FileReader(src));
              BufferedWriter bw = new BufferedWriter(new FileWriter(dest));
  
              String line = null;
              
              line = br.readLine();
              
              do {
                  line = br.readLine();
                  if (line.length() != 0) bw.write(replace(line));
                  if (line != null) bw.newLine();
              } while (line != null);
               
              bw.flush();
              bw.close();
              br.close();
              
              src.delete();
              dest.renameTo(src);
          } catch (IOException ioe) {
              ioe.printStackTrace();
          }       
      }
      
      /**
       * Set the source file.
       */
      public void setFile(String file) {
          this.src = project.resolveFile(file);
          this.dest = project.resolveFile(file + ".temp");
      }
  
      /**
       * Set the string token to replace.
       */
      public void setToken(String token) {
          this.token = token;
      }
  
      /**
       * Set the string value to use as token replacement.
       */
      public void setValue(String value) {
          this.value = value;
      }
  
      /**
       * Perform the token substitution.
       */    
      private String replace (String orig) {
          StringBuffer buffer = new StringBuffer();
          int start = 0, end = 0;
          
          while ((end = orig.indexOf(token, start)) > -1) {
              buffer.append(orig.substring(start, end));
              start = end + token.length() + 1;
          }
          
          buffer.append(orig.substring(start));
          
          return buffer.toString();            
      }
  }
  
  

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