/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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package com.sun.codemodel.internal.writer;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.OutputStream;

import java.util.HashSet;

import java.util.Set;

import com.sun.codemodel.internal.CodeWriter;

import com.sun.codemodel.internal.JPackage;

/**

 * Writes all the source files under the specified file folder.

 *

 * @author

 *      Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)

 */

public class FileCodeWriter extends CodeWriter {

    /** The target directory to put source code. */

    private final File target;

    /** specify whether or not to mark the generated files read-only */

    private final boolean readOnly;

    /** Files that shall be marked as read only. */

    private final Set<File> readonlyFiles = new HashSet<File>();

    public FileCodeWriter( File target ) throws IOException {

        this(target,false);

    }

    public FileCodeWriter( File target, String encoding ) throws IOException {

        this(target,false, encoding);

    }

    public FileCodeWriter( File target, boolean readOnly ) throws IOException {

        this(target, readOnly, null);

    }

    public FileCodeWriter( File target, boolean readOnly, String encoding ) throws IOException {

        this.target = target;

        this.readOnly = readOnly;

        this.encoding = encoding;

        if(!target.exists() || !target.isDirectory())

            throw new IOException(target + ": non-existent directory");

    }

    public OutputStream openBinary(JPackage pkg, String fileName) throws IOException {

        return new FileOutputStream(getFile(pkg,fileName));

    }

    protected File getFile(JPackage pkg, String fileName ) throws IOException {

        File dir;

        if(pkg.isUnnamed())

            dir = target;

        else

            dir = new File(target, toDirName(pkg));

        if(!dir.exists())   dir.mkdirs();

        File fn = new File(dir,fileName);

        if (fn.exists()) {

            if (!fn.delete())

                throw new IOException(fn + ": Can't delete previous version");

        }

        if(readOnly)        readonlyFiles.add(fn);

        return fn;

    }

    public void close() throws IOException {

        // mark files as read-onnly if necessary

        for (File f : readonlyFiles)

            f.setReadOnly();

    }

    /** Converts a package name to the directory name. */

    private static String toDirName( JPackage pkg ) {

        return pkg.name().replace('.',File.separatorChar);

    }

}