/*

 * Copyright (c) 2012, 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.sjavac;

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.Writer;

import java.net.URI;

import java.util.HashSet;

import java.util.Map;

import java.util.Set;

import com.sun.tools.sjavac.comp.CompilationService;

import com.sun.tools.sjavac.options.Options;

import com.sun.tools.sjavac.pubapi.PubApi;

/**

 * The copy file transform simply copies a matching file from -src to -d .

 * Such files are typically images, xml documents and other data files.

 *

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

 *  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>

 */

public class CopyFile implements Transformer {

    public void setExtra(String e) {

    }

    public void setExtra(Options a) {

    }

    public boolean transform(CompilationService compilationService,

                             Map<String,Set<URI>> pkgSrcs,

                             Set<URI> visibleSrcs,

                             Map<String,Set<String>> oldPackageDependents,

                             URI destRoot,

                             Map<String,Set<URI>>    packageArtifacts,

                             Map<String,Map<String, Set<String>>> packageDependencies,

                             Map<String,Map<String, Set<String>>> packageCpDependencies,

                             Map<String, PubApi> packagePubapis,

                             Map<String, PubApi> dependencyPubapis,

                             int debugLevel,

                             boolean incremental,

                             int numCores)

    {

        boolean rc = true;

        String dest_filename;

        File dest;

        for (String pkgName : pkgSrcs.keySet()) {

            String pkgNameF = Util.toFileSystemPath(pkgName);

            for (URI u : pkgSrcs.get(pkgName)) {

                File src = new File(u);

                File destDir;

                destDir = new File(destRoot.getPath()+File.separator+pkgNameF);

                dest_filename = destRoot.getPath()+File.separator+pkgNameF+File.separator+src.getName();

                dest = new File(dest_filename);

                if (!destDir.isDirectory()) {

                    if (!destDir.mkdirs()) {

                       Log.error("Error: The copier could not create the directory "+

                                           destDir.getPath());

                        return false;

                    }

                }

                Set<URI> as = packageArtifacts.get(pkgName);

                if (as == null) {

                    as = new HashSet<>();

                    packageArtifacts.put(pkgName, as);

                }

                as.add(dest.toURI());

                if (dest.exists() && dest.lastModified() > src.lastModified()) {

                    // A copied file exists, and its timestamp is newer than the source.

                    continue;

                }

                Log.info("Copying "+pkgNameF+File.separator+src.getName());

                try (InputStream fin = new FileInputStream(src);

                     OutputStream fout = new FileOutputStream(dest)) {

                    byte[] buf = new byte[1024];

                    int len;

                    while ((len = fin.read(buf)) > 0){

                        fout.write(buf, 0, len);

                    }

                }

                catch(IOException e){

                    Log.error("Could not copy the file "+src.getPath()+" to "+dest.getPath());

                    rc = false;

                }

            }

        }

        return rc;

    }

}