net.minecraftforge.gradle.common.tasks.ExtractExistingFiles Maven / Gradle / Ivy

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Minecraft mod development framework used by Forge and FML for the gradle build system adapted for mohist api.

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/*
 * ForgeGradle
 * Copyright (C) 2018 Forge Development LLC
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
 * USA
 */

package net.minecraftforge.gradle.common.tasks;

import org.apache.commons.io.IOUtils;
import org.gradle.api.DefaultTask;
import org.gradle.api.file.ConfigurableFileCollection;
import org.gradle.api.file.RegularFileProperty;
import org.gradle.api.tasks.InputFile;
import org.gradle.api.tasks.OutputDirectories;
import org.gradle.api.tasks.TaskAction;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

public abstract class ExtractExistingFiles extends DefaultTask {
    @TaskAction
    public void run() throws IOException {
        try (ZipFile zip = new ZipFile(getArchive().get().getAsFile())) {
            Enumeration enu = zip.entries();
            while (enu.hasMoreElements()) {
                ZipEntry e = enu.nextElement();
                if (e.isDirectory()) continue;

                for (File target : getTargets()) {
                    File out = new File(target, e.getName());
                    if (!out.exists()) continue;
                    try (FileOutputStream fos = new FileOutputStream(out)) {
                        IOUtils.copy(zip.getInputStream(e), fos);
                    }
                }
            }
        }
    }

    @InputFile
    public abstract RegularFileProperty getArchive();

    @OutputDirectories
    public abstract ConfigurableFileCollection getTargets();
}