net.minecraftforge.gradle.mcp.function.InjectFunction Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of MohistGradle
Minecraft mod development framework used by Forge and FML for the gradle build system adapted for mohist api.
The newest version!
/*
 * 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.mcp.function;

import net.minecraftforge.gradle.common.util.HashStore;
import net.minecraftforge.gradle.common.util.Utils;
import net.minecraftforge.gradle.mcp.util.MCPEnvironment;
import net.minecraftforge.srgutils.MinecraftVersion;

import org.apache.commons.io.IOUtils;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.HashSet;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.stream.Collectors;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

class InjectFunction implements MCPFunction {
    private static final MinecraftVersion v1_14_4 = MinecraftVersion.from("1.14.4");

    private String inject;
    private String template;
    private Map added;

    @Override
    public void loadData(Map data) {
        inject = data.get("inject");
    }

    @Override
    public void initialize(MCPEnvironment environment, ZipFile zip) throws IOException {
        added = zip.stream().filter(e -> !e.isDirectory() && e.getName().startsWith(inject))
        .collect(Collectors.toMap(e -> e.getName().substring(inject.length()), e -> {
            try {
                return IOUtils.toByteArray(zip.getInputStream(e));
            } catch (IOException ex) {
                throw new RuntimeException(ex);
            }
        }));
        if (added.containsKey("package-info-template.java")) {
            template = new String(added.get("package-info-template.java"), StandardCharsets.UTF_8);
            added.remove("package-info-template.java");
        }
    }

    @Override
    public File execute(MCPEnvironment environment) throws Exception {
        File input = (File)environment.getArguments().get("input");
        File output = environment.getFile("output.jar");

        File hashFile = environment.getFile("lastinput.sha1");
        HashStore hashStore = new HashStore(environment.project).load(hashFile);
        if (hashStore.isSame(input) && output.exists()) return output;

        if (output.exists()) output.delete();
        if (!output.getParentFile().exists()) output.getParentFile().mkdirs();
        output.createNewFile();

        try (ZipInputStream zis = new ZipInputStream(new FileInputStream(input));
            ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(output)) ) {

            Set visited = new HashSet<>();

            ZipEntry entry;
            while ((entry = zis.getNextEntry()) != null) {
                zos.putNextEntry(entry);
                IOUtils.copyLarge(zis, zos);
                zos.closeEntry();
                if (template != null) {
                    String pkg = entry.isDirectory() && !entry.getName().endsWith("/") ? entry.getName() : entry.getName().indexOf('/') == -1 ? "" : entry.getName().substring(0, entry.getName().lastIndexOf('/'));
                    if (visited.add(pkg)) {
                        if (!pkg.startsWith("net/minecraft/") &&
                            (!pkg.startsWith("com/mojang/") || environment.getMinecraftVersion().compareTo(v1_14_4) <= 0)) //Add com/mojang package-infos in 1.15+, could probably get away without the version check
                            continue;
                        zos.putNextEntry(Utils.getStableEntry(pkg + "/package-info.java"));
                        zos.write(template.replace("{PACKAGE}", pkg.replaceAll("/", ".")).getBytes(StandardCharsets.UTF_8));
                        zos.closeEntry();
                    }
                }
            }

            for (Entry add : added.entrySet()) {
                boolean filter = "server".equals(environment.side) ? add.getKey().contains("/client/") : add.getKey().contains("/server/");
                if (filter)
                    continue;
                ZipEntry info = new ZipEntry(add.getKey());
                info.setTime(0);
                zos.putNextEntry(info);
                zos.write(add.getValue());
                zos.closeEntry();
            }
        }

        hashStore.save(hashFile);
        return output;
    }

    @Override
    public  void cleanup(MCPEnvironment environment) {
        if (this.added != null) {
            this.added.clear();
        }
    }

}