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From ste...@apache.org
Subject cvs commit: jakarta-ant/src/main/org/apache/tools/ant/taskdefs LoadFile.java
Date Tue, 25 Dec 2001 06:13:41 GMT
stevel      01/12/24 22:13:41

  Added:       src/main/org/apache/tools/ant/taskdefs LoadFile.java
  Log:
  new loadfile task
  
  Revision  Changes    Path
  1.1                  jakarta-ant/src/main/org/apache/tools/ant/taskdefs/LoadFile.java
  
  Index: LoadFile.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", "Ant", 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.Task;
  import org.apache.tools.ant.Project;
  import org.apache.tools.ant.BuildException;
  import org.apache.tools.ant.ProjectHelper;
  import org.apache.tools.ant.types.EnumeratedAttribute;
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.InputStreamReader;
  import java.io.IOException;
  import java.io.BufferedInputStream;
  
  /**
   * Load a file into a property
   *
   * @author Steve Loughran
   * @created 10 December 2001
   */
  public class LoadFile extends Task {
  
      /**
       * source file, usually null
       */
      private File srcFile = null;
  
      /**
       * what to do when it goes pear-shaped
       */
      private boolean failOnError = true;
  
      /**
       * Encoding to use for filenames, defaults to the platform's default
       * encoding.
       */
      private String encoding = null;
  
      /**
       * name of property
       */
      private String property = null;
  
  
      /**
       * Encoding to use for filenames, defaults to the platform's default
       * encoding. <p>
       *
       * For a list of possible values see <a href="http://java.sun.com/products/jdk/1.2/docs/guide/internat/encoding.doc.html">
       * http://java.sun.com/products/jdk/1.2/docs/guide/internat/encoding.doc.html
       * </a>.</p>
       *
       * @param encoding The new Encoding value
       */
  
      public void setEncoding(String encoding) {
          this.encoding = encoding;
      }
  
  
      /**
       * Sets the Property attribute of the LoadFile object
       *
       * @param property The new Property value
       */
      public void setProperty(String property) {
          this.property = property;
      }
  
  
      /**
       * Sets the srcfile attribute.
       *
       * @param srcFile The new SrcFile value
       */
      public void setSrcFile(File srcFile) {
          this.srcFile = srcFile;
      }
  
  
      /**
       * Sets the Failonerror attribute of the LoadFile object
       *
       * @param fail The new Failonerror value
       */
      public void setFailonerror(boolean fail) {
          failOnError = fail;
      }
  
  
      /**
       * read in a source file to a property
       *
       * @exception BuildException if something goes wrong with the build
       */
      public void execute()
          throws BuildException {
          //validation
          if (srcFile == null) {
              throw new BuildException("source file not defined");
          }
          if (property == null) {
              throw new BuildException("output property not defined");
          }
          FileInputStream fis = null;
          BufferedInputStream bis = null;
          InputStreamReader instream = null;
          log("loading "+srcFile+" into property "+property,Project.MSG_VERBOSE);
          try {
              long len = srcFile.length();
              log("file size = "+len,Project.MSG_DEBUG);
              //discard most of really big files
              if (len > Integer.MAX_VALUE) {
                  log("this file is far to big to load completely");
              }
              int size=(int) len;
              char[] buffer = new char[size];
              //open up the file
              fis = new FileInputStream(srcFile);
              bis = new BufferedInputStream(fis);
              if (encoding == null) {
                  instream = new InputStreamReader(bis);
              }
              else {
                  instream = new InputStreamReader(bis, encoding);
              }
              instream.read(buffer);
              String text = new String(buffer);
              project.setNewProperty(property, text);
              log("loaded "+buffer.length+" characters",Project.MSG_VERBOSE);
              log(property+" := "+text,Project.MSG_DEBUG);
              
          } catch (IOException ioe) {
              String message = "Unable to load file: " + ioe.toString();
              if (failOnError) {
                  throw new BuildException(message, ioe, location);
              }
              else {
                  log(message, Project.MSG_ERR);
              }
          } finally {
              try {
                  if (fis != null) {
                      fis.close();
                  }
              } catch (IOException ioex) {
              }
          }
      }
  
  //end class
  }
  
  
  
  

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