Source Code Cross Referenced for DefaultNative2Ascii.java in  » Build » ANT » org » apache » tools » ant » taskdefs » optional » native2ascii » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Build » ANT » org.apache.tools.ant.taskdefs.optional.native2ascii 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *  Licensed to the Apache Software Foundation (ASF) under one or more
003:         *  contributor license agreements.  See the NOTICE file distributed with
004:         *  this work for additional information regarding copyright ownership.
005:         *  The ASF licenses this file to You under the Apache License, Version 2.0
006:         *  (the "License"); you may not use this file except in compliance with
007:         *  the License.  You may obtain a copy of the License at
008:         *
009:         *      http://www.apache.org/licenses/LICENSE-2.0
010:         *
011:         *  Unless required by applicable law or agreed to in writing, software
012:         *  distributed under the License is distributed on an "AS IS" BASIS,
013:         *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014:         *  See the License for the specific language governing permissions and
015:         *  limitations under the License.
016:         *
017:         */
018:        package org.apache.tools.ant.taskdefs.optional.native2ascii;
019:
020:        import java.io.File;
021:        import org.apache.tools.ant.BuildException;
022:        import org.apache.tools.ant.ProjectComponent;
023:        import org.apache.tools.ant.taskdefs.optional.Native2Ascii;
024:        import org.apache.tools.ant.types.Commandline;
025:
026:        /**
027:         * encapsulates the handling common to diffent Native2Asciiadapter
028:         * implementations.
029:         *
030:         * @since Ant 1.6.3
031:         */
032:        public abstract class DefaultNative2Ascii implements 
033:                Native2AsciiAdapter {
034:
035:            /** No-arg constructor. */
036:            public DefaultNative2Ascii() {
037:            }
038:
039:            /**
040:             * Splits the task into setting up the command line switches
041:             * @param args the native 2 ascii arguments.
042:             * @param srcFile the source file.
043:             * @param destFile the destination file.
044:             * @return run if the conversion was successful.
045:             * @throws BuildException if there is a problem.
046:             * (delegated to {@link #setup setup}), adding the file names
047:             * (delegated to {@link #addFiles addFiles}) and running the tool
048:             * (delegated to {@link #run run}).
049:             */
050:            public final boolean convert(Native2Ascii args, File srcFile,
051:                    File destFile) throws BuildException {
052:                Commandline cmd = new Commandline();
053:                setup(cmd, args);
054:                addFiles(cmd, args, srcFile, destFile);
055:                return run(cmd, args);
056:            }
057:
058:            /**
059:             * Sets up the initial command line.
060:             *
061:             * <p>only the -encoding argument and nested arg elements get
062:             * handled here.</p>
063:             *
064:             * @param cmd Command line to add to
065:             * @param args provides the user-setting and access to Ant's
066:             * logging system.
067:             * @throws BuildException if there was a problem.
068:             */
069:            protected void setup(Commandline cmd, Native2Ascii args)
070:                    throws BuildException {
071:                if (args.getEncoding() != null) {
072:                    cmd.createArgument().setValue("-encoding");
073:                    cmd.createArgument().setValue(args.getEncoding());
074:                }
075:                cmd.addArguments(args.getCurrentArgs());
076:            }
077:
078:            /**
079:             * Adds source and dest files to the command line.
080:             *
081:             * <p>This implementation adds them without any leading
082:             * qualifiers, source first.</p>
083:             *
084:             * @param cmd Command line to add to
085:             * @param log provides access to Ant's logging system.
086:             * @param src the source file
087:             * @param dest the destination file
088:             * @throws BuildException if there was a problem.
089:             */
090:            protected void addFiles(Commandline cmd, ProjectComponent log,
091:                    File src, File dest) throws BuildException {
092:                cmd.createArgument().setFile(src);
093:                cmd.createArgument().setFile(dest);
094:            }
095:
096:            /**
097:             * Executes the command.
098:             *
099:             * @param cmd Command line to execute
100:             * @param log provides access to Ant's logging system.
101:             * @return whether execution was successful
102:             * @throws BuildException if there was a problem.
103:             */
104:            protected abstract boolean run(Commandline cmd, ProjectComponent log)
105:                    throws BuildException;
106:        }
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