Ant example source code file (DefaultJspCompilerAdapter.java)

This example Ant source code file (DefaultJspCompilerAdapter.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Ant tags/keywords

commandlinejava, compilation, defaultjspcompileradapter, file, file, io, jspc, jspc, jspcompileradapter, project, string, string, stringbuffer, stringbuffer, util, vector

The DefaultJspCompilerAdapter.java source code

/*
 *  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.jsp.compilers;

import java.io.File;
import java.util.Enumeration;
import java.util.Vector;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.taskdefs.optional.jsp.JspC;
import org.apache.tools.ant.types.CommandlineJava;

/**
 * This is the default implementation for the JspCompilerAdapter interface.
 * This is currently very light on the ground since only one compiler type is
 * supported.
 *
 */
public abstract class DefaultJspCompilerAdapter
    implements JspCompilerAdapter {

    private static String lSep = System.getProperty("line.separator");

    /**
     * Logs the compilation parameters, adds the files to compile and logs the
     * "niceSourceList"
     * @param jspc the compiler task for logging
     * @param compileList the list of files to compile
     * @param cmd the command line used
     */
    protected void logAndAddFilesToCompile(JspC jspc,
                                           Vector compileList,
                                           CommandlineJava cmd) {
        jspc.log("Compilation " + cmd.describeJavaCommand(),
                 Project.MSG_VERBOSE);

        StringBuffer niceSourceList = new StringBuffer("File");
        if (compileList.size() != 1) {
            niceSourceList.append("s");
        }
        niceSourceList.append(" to be compiled:");

        niceSourceList.append(lSep);

        Enumeration e = compileList.elements();
        while (e.hasMoreElements()) {
            String arg = (String) e.nextElement();
            cmd.createArgument().setValue(arg);
            niceSourceList.append("    ");
            niceSourceList.append(arg);
            niceSourceList.append(lSep);
        }

        jspc.log(niceSourceList.toString(), Project.MSG_VERBOSE);
    }

    // CheckStyle:VisibilityModifier OFF - bc

    /**
     * our owner
     */
    protected JspC owner;

    // CheckStyle:VisibilityModifier ON

    /**
     * set the owner
     * @param owner the owner JspC compiler
     */
    public void setJspc(JspC owner) {
        this.owner = owner;
    }

    /** get the owner
     * @return the owner; should never be null
     */
    public JspC getJspc() {
        return owner;
    }


    /**
     *  add an argument oneple to the argument list, if the value aint null
     * @param cmd the command line
     * @param  argument  The argument
     */
    protected void addArg(CommandlineJava cmd, String argument) {
        if (argument != null && argument.length() != 0) {
           cmd.createArgument().setValue(argument);
        }
    }


    /**
     *  add an argument tuple to the argument list, if the value aint null
     * @param cmd the command line
     * @param  argument  The argument
     * @param  value     the parameter
     */
    protected void addArg(CommandlineJava cmd, String argument, String value) {
        if (value != null) {
            cmd.createArgument().setValue(argument);
            cmd.createArgument().setValue(value);
        }
    }

    /**
     *  add an argument tuple to the arg list, if the file parameter aint null
     * @param cmd the command line
     * @param  argument  The argument
     * @param  file     the parameter
     */
    protected void addArg(CommandlineJava cmd, String argument, File file) {
        if (file != null) {
            cmd.createArgument().setValue(argument);
            cmd.createArgument().setFile(file);
        }
    }

    /**
     * ask if compiler can sort out its own dependencies
     * @return true if the compiler wants to do its own
     * depends
     */
    public boolean implementsOwnDependencyChecking() {
        return false;
    }

    /**
     * get our project
     * @return owner project data
     */
    public Project getProject() {
        return getJspc().getProject();
    }
}