ant-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From cos...@apache.org
Subject cvs commit: jakarta-ant/src/main/org/apache/tools/ant/taskdefs ImportTask.java
Date Tue, 24 Dec 2002 01:25:09 GMT
costin      2002/12/23 17:25:09

  Added:       src/main/org/apache/tools/ant/taskdefs ImportTask.java
  Log:
  <import> task.
  
  This is almost the same as in embed, except few simplifications
  and cleanups.
  
  Revision  Changes    Path
  1.1                  jakarta-ant/src/main/org/apache/tools/ant/taskdefs/ImportTask.java
  
  Index: ImportTask.java
  ===================================================================
  /*
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2000-2002 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.*;
  import org.apache.tools.ant.helper.ProjectHelper2;
  
  import java.io.File;
  import java.io.IOException;
  
  /**
   * EXPERIMENTAL
   * Import task.
   *
   * It must be 'top level'. On execution it'll read another file
   * into the same Project.
   *
   * Important: there is one limitation related with the top level
   * elements in the imported files. The current implementation will
   * add them at the end of the top-level ( instead of replacing the
   * import element - which would be more intuitive ).
   *
   *
   * @author Nicola Ken Barozzi nicolaken@apache.org
   * @author Dominique Devienne DDevienne@lgc.com
   * @author Costin Manolache
   */
  public class ImportTask extends Task {
      String file;
  
      public void setFile( String file ) {
          // I don't think we can use File - different rules
          // for relative paths.
          this.file=file;
      }
      
      /**
       *  This relies on the task order model.
       *
       */
      public void execute() throws BuildException
      {
          if (file == null) {
              throw new BuildException("import requires file attribute");
          }
      
          ProjectHelper2.AntXmlContext context;
          context=(ProjectHelper2.AntXmlContext)project.getReference("ant.parsing.context");
  
          context.importlevel++;
  
          project.log("Importing file "+file +" from "+
                      context.buildFile.getAbsolutePath() +
                  "( level=" + context.importlevel + " )",
                      Project.MSG_VERBOSE);
  
          // Paths are relative to the build file they're imported from,
          // *not* the current directory (same as entity includes).
          File importedFile = new File(file);
          if (!importedFile.isAbsolute()) {
              importedFile = new File(context.buildFileParent, file);
          }
          if (!importedFile.exists()) {
                  throw new BuildException("Cannot find "+file+" imported from "+
                                           context.buildFile.getAbsolutePath());
          }
  
          // Add parent build file to the map to avoid cycles...
          String parentFilename = getPath(context.buildFile);
          if (!context.importedFiles.containsKey(parentFilename)) {
              context.importedFiles.put(parentFilename, context.buildFile);
          }
  
          // Make sure we import the file only once
          String importedFilename = getPath(importedFile);
          if (context.importedFiles.containsKey(importedFilename)) {
              project.log("\nSkipped already imported file:\n   "+
                      importedFilename+"\n",Project.MSG_WARN);
              context.importlevel--;
              return;
          } else {
              context.importedFiles.put(importedFilename, importedFile);
          }
  
          context.ignoreProjectTag=true;
          context.helper.parse(project, importedFile,
                  new ProjectHelper2.RootHandler(context));
  
          context.importlevel--;
      }
  
      private static String getPath(File file) {
          try {
              return file.getCanonicalPath();
          }
          catch (IOException e) {
              return file.getAbsolutePath();
          }
      }
  }
  
  
  

--
To unsubscribe, e-mail:   <mailto:ant-dev-unsubscribe@jakarta.apache.org>
For additional commands, e-mail: <mailto:ant-dev-help@jakarta.apache.org>


Mime
View raw message