/*

 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.

 * 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package com.sun.tools.internal.xjc;

import java.io.File;

import java.io.IOException;

import java.io.OutputStream;

import java.io.Writer;

import com.sun.codemodel.internal.CodeWriter;

import com.sun.codemodel.internal.JPackage;

import com.sun.codemodel.internal.writer.FilterCodeWriter;

/**

 * {@link CodeWriter} that reports progress to {@link XJCListener}.

 */

final class ProgressCodeWriter extends FilterCodeWriter {

    private int current;

    private final int totalFileCount;

    public ProgressCodeWriter( CodeWriter output, XJCListener progress, int totalFileCount ) {

        super(output);

        this.progress = progress;

        this.totalFileCount = totalFileCount;

        if(progress==null)

            throw new IllegalArgumentException();

    }

    private final XJCListener progress;

    @Override

    public Writer openSource(JPackage pkg, String fileName) throws IOException {

        report(pkg,fileName);

        return super.openSource(pkg, fileName);

    }

    @Override

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

        report(pkg,fileName);

        return super.openBinary(pkg,fileName);

    }

    /**

     * Report progress to {@link XJCListener}.

     * @param pkg The package of file being written. Value of {@code null} means that file has no package.

     * @param fileName The file name being written. Value can't be {@code null}.

     */

    private void report(final JPackage pkg, final String fileName) {

        if (fileName == null) {

            throw new IllegalArgumentException("File name is null");

        }

        final String pkgName;

        final String fileNameOut;

        if (pkg != null && (pkgName = pkg.name().replace('.', File.separatorChar)).length() > 0 ) {

            final StringBuilder sb = new StringBuilder(fileName.length() + pkgName.length() + 1);

            sb.append(pkgName);

            sb.append(File.separatorChar);

            sb.append(fileName);

            fileNameOut = sb.toString();

        } else {

            fileNameOut = fileName;

        }

        if(progress.isCanceled())

            throw new AbortException();

        progress.generatedFile(fileNameOut, current++, totalFileCount);

    }

}