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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.tools.ant.taskdefs.optional.native2ascii;
import java.io.File;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.ProjectComponent;
import org.apache.tools.ant.taskdefs.optional.Native2Ascii;
import org.apache.tools.ant.types.Commandline;
/**
* encapsulates the handling common to diffent Native2Asciiadapter
* implementations.
*
* @since Ant 1.6.3
*/
public abstract class DefaultNative2Ascii implements Native2AsciiAdapter {
/** No-arg constructor. */
public DefaultNative2Ascii() {
}
/**
* Splits the task into setting up the command line switches
* @param args the native 2 ascii arguments.
* @param srcFile the source file.
* @param destFile the destination file.
* @return run if the conversion was successful.
* @throws BuildException if there is a problem.
* (delegated to {@link #setup setup}), adding the file names
* (delegated to {@link #addFiles addFiles}) and running the tool
* (delegated to {@link #run run}).
*/
public final boolean convert(Native2Ascii args, File srcFile,
File destFile) throws BuildException {
Commandline cmd = new Commandline();
setup(cmd, args);
addFiles(cmd, args, srcFile, destFile);
return run(cmd, args);
}
/**
* Sets up the initial command line.
*
* <p>only the -encoding argument and nested arg elements get
* handled here.</p>
*
* @param cmd Command line to add to
* @param args provides the user-setting and access to Ant's
* logging system.
* @throws BuildException if there was a problem.
*/
protected void setup(Commandline cmd, Native2Ascii args)
throws BuildException {
if (args.getEncoding() != null) {
cmd.createArgument().setValue("-encoding");
cmd.createArgument().setValue(args.getEncoding());
}
cmd.addArguments(args.getCurrentArgs());
}
/**
* Adds source and dest files to the command line.
*
* <p>This implementation adds them without any leading
* qualifiers, source first.</p>
*
* @param cmd Command line to add to
* @param log provides access to Ant's logging system.
* @param src the source file
* @param dest the destination file
* @throws BuildException if there was a problem.
*/
protected void addFiles(Commandline cmd, ProjectComponent log, File src,
File dest) throws BuildException {
cmd.createArgument().setFile(src);
cmd.createArgument().setFile(dest);
}
/**
* Executes the command.
*
* @param cmd Command line to execute
* @param log provides access to Ant's logging system.
* @return whether execution was successful
* @throws BuildException if there was a problem.
*/
protected abstract boolean run(Commandline cmd, ProjectComponent log)
throws BuildException;
}
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