91 lines
2.8 KiB
Java
91 lines
2.8 KiB
Java
/*
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* Minecraft Forge
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* Copyright (c) 2016-2019.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation version 2.1
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* of the License.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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package net.minecraftforge.fml.loading;
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import org.apache.logging.log4j.LogManager;
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import org.apache.logging.log4j.Logger;
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import java.io.IOException;
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import java.io.InputStream;
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import java.net.URL;
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import java.net.URLConnection;
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import java.net.URLStreamHandler;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.Optional;
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import java.util.jar.Manifest;
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import static net.minecraftforge.fml.loading.LogMarkers.CORE;
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public class ModJarURLHandler extends URLStreamHandler
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{
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private static final Logger LOGGER = LogManager.getLogger();
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// modjar://modid/path/to/file
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@Override
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protected URLConnection openConnection(URL url) {
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return new ModJarURLConnection(url);
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}
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static class ModJarURLConnection extends URLConnection {
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private Path resource;
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private String modpath;
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private String modid;
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private Optional<Manifest> manifest;
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public ModJarURLConnection(final URL url) {
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super(url);
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}
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@Override
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public void connect()
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{
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if (resource == null) {
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modid = url.getHost();
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// trim first char
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modpath = url.getPath().substring(1);
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resource = FMLLoader.getLoadingModList().getModFileById(modid).getFile().findResource(modpath);
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manifest = FMLLoader.getLoadingModList().getModFileById(modid).getManifest();
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}
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}
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@Override
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public InputStream getInputStream() throws IOException
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{
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connect();
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LOGGER.trace(CORE, "Loading modjar URL {} got resource {} {}", url, resource, resource != null ? Files.exists(resource) : "missing");
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return Files.newInputStream(resource);
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}
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@Override
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public long getContentLengthLong() {
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try {
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connect();
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return Files.size(resource);
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} catch (IOException e) {
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return -1L;
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}
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}
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public Optional<Manifest> getManifest() {
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return manifest;
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}
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}
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}
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