/*

 * Copyright 2005-2008 Sun Microsystems, Inc.  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.  Sun designates this

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

 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package com.sun.tools.javac.file;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.io.OutputStreamWriter;

import java.io.Writer;

import java.net.URI;

import java.nio.ByteBuffer;

import java.nio.CharBuffer;

import java.nio.charset.CharsetDecoder;

import javax.tools.JavaFileObject;

/**

 * A subclass of JavaFileObject representing regular files.

 *

 * <p><b>This is NOT part of any API supported by Sun Microsystems.

 * If you write code that depends on this, you do so at your own risk.

 * This code and its internal interfaces are subject to change or

 * deletion without notice.</b>

 */

class RegularFileObject extends BaseFileObject {

    /** Have the parent directories been created?

     */

    private boolean hasParents = false;

    private String name;

    final File f;

    public RegularFileObject(JavacFileManager fileManager, File f) {

        this(fileManager, f.getName(), f);

    }

    public RegularFileObject(JavacFileManager fileManager, String name, File f) {

        super(fileManager);

        if (f.isDirectory()) {

            throw new IllegalArgumentException("directories not supported");

        }

        this.name = name;

        this.f = f;

    }

    public InputStream openInputStream() throws IOException {

        return new FileInputStream(f);

    }

    protected CharsetDecoder getDecoder(boolean ignoreEncodingErrors) {

        return fileManager.getDecoder(fileManager.getEncodingName(), ignoreEncodingErrors);

    }

    public OutputStream openOutputStream() throws IOException {

        ensureParentDirectoriesExist();

        return new FileOutputStream(f);

    }

    public Writer openWriter() throws IOException {

        ensureParentDirectoriesExist();

        return new OutputStreamWriter(new FileOutputStream(f), fileManager.getEncodingName());

    }

    @Override

    protected String inferBinaryName(Iterable<? extends File> path) {

        String fPath = f.getPath();

        //System.err.println("RegularFileObject " + file + " " +r.getPath());

        for (File dir: path) {

            //System.err.println("dir: " + dir);

            String dPath = dir.getPath();

            if (dPath.length() == 0)

                dPath = System.getProperty("user.dir");

            if (!dPath.endsWith(File.separator))

                dPath += File.separator;

            if (fPath.regionMatches(true, 0, dPath, 0, dPath.length())

                && new File(fPath.substring(0, dPath.length())).equals(new File(dPath))) {

                String relativeName = fPath.substring(dPath.length());

                return removeExtension(relativeName).replace(File.separatorChar, '.');

            }

        }

        return null;

    }

    private void ensureParentDirectoriesExist() throws IOException {

        if (!hasParents) {

            File parent = f.getParentFile();

            if (parent != null && !parent.exists()) {

                if (!parent.mkdirs()) {

                    if (!parent.exists() || !parent.isDirectory()) {

                        throw new IOException("could not create parent directories");

                    }

                }

            }

            hasParents = true;

        }

    }

    @Deprecated

    public String getName() {

        return name;

    }

    public boolean isNameCompatible(String cn, JavaFileObject.Kind kind) {

        cn.getClass();

        // null check

        if (kind == Kind.OTHER && getKind() != kind) {

            return false;

        }

        String n = cn + kind.extension;

        if (name.equals(n)) {

            return true;

        }

        if (name.equalsIgnoreCase(n)) {

            try {

                // allow for Windows

                return f.getCanonicalFile().getName().equals(n);

            } catch (IOException e) {

            }

        }

        return false;

    }

    @Deprecated

    public String getPath() {

        return f.getPath();

    }

    public long getLastModified() {

        return f.lastModified();

    }

    public boolean delete() {

        return f.delete();

    }

    public CharBuffer getCharContent(boolean ignoreEncodingErrors) throws IOException {

        CharBuffer cb = fileManager.getCachedContent(this);

        if (cb == null) {

            InputStream in = new FileInputStream(f);

            try {

                ByteBuffer bb = fileManager.makeByteBuffer(in);

                JavaFileObject prev = fileManager.log.useSource(this);

                try {

                    cb = fileManager.decode(bb, ignoreEncodingErrors);

                } finally {

                    fileManager.log.useSource(prev);

                }

                fileManager.recycleByteBuffer(bb);

                if (!ignoreEncodingErrors) {

                    fileManager.cache(this, cb);

                }

            } finally {

                in.close();

            }

        }

        return cb;

    }

    @Override

    public boolean equals(Object other) {

        if (!(other instanceof RegularFileObject)) {

            return false;

        }

        RegularFileObject o = (RegularFileObject) other;

        try {

            return f.equals(o.f) || f.getCanonicalFile().equals(o.f.getCanonicalFile());

        } catch (IOException e) {

            return false;

        }

    }

    @Override

    public int hashCode() {

        return f.hashCode();

    }

    public URI toUri() {

    }

}