ADDED: Reading maven-metadata to download the latest parchment mappings

NikitaCartes-forks · Oct 5, 2023 · 990731f · 990731f
1 parent 219a4cc
commit 990731f
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Showing 3 changed files with 18 additions and 11 deletions.
diff --git a/readme.md b/readme.md
@@ -18,7 +18,7 @@ To disabled versioning entirely (and only decompile), specify `--no-repo`.
 
 To disable special versions (e.g. april fools or combat snapshots), specify `--skip-nonlinear`.
 
-To use other mappings than mojmaps, specify `--mappings=<mapping>`. Supported mappings are `mojmap`, `fabric_intermediary` and `yarn`.
+To use other mappings than mojmaps, specify `--mappings=<mapping>`. Supported mappings are `mojmap`, `mojmap_parchment`, `fabric_intermediary` and `yarn`.
 
 Powered by:
 - [Vineflower](https://github.com/Vineflower/vineflower)
@@ -29,6 +29,7 @@ Powered by:
 - [Loom](https://github.com/FabricMC/fabric-loom)
 - [Yarn](https://github.com/FabricMC/yarn)
 - [Fabric Intermediary Mappings](https://github.com/FabricMC/intermediary)
+- [Parchment](https://github.com/ParchmentMC/Parchment)
 
 ## Help / Usage
 
@@ -39,7 +40,7 @@ Options:
       --mappings=<mapping>   Specifies the mappings used to decompile the
                                source tree. Mojmaps are selected by default.
                                Possible values are: mojmap,
-                               fabric_intermediary, yarn
+                               fabric_intermediary, yarn, mojmap_parchment
       --min-version=<version>
                              Specify the min. version to decompile. Each
                                following version will be decompiled afterwards,

diff --git a/src/main/groovy/com/github/winplay02/MappingHelper.java b/src/main/groovy/com/github/winplay02/MappingHelper.java
@@ -111,7 +111,7 @@ public Optional<Path> getMappingsPath(McVersion mcVersion) {
 				case MOJMAP_PARCHMENT -> {
 					try {
 						yield Optional.of(mappingsPathParchment(mcVersion));
-					} catch (IOException e) {
+					} catch (Exception e) {
 						throw new RuntimeException(e);
 					}
 				}
@@ -165,19 +165,17 @@ public static MemoryMappingTree createIntermediaryMappingsProvider(McVersion mcV
 		return mappingTree;
 	}
 
-	private static Path mappingsPathParchment(McVersion mcVersion) throws IOException {
-		if (!mcVersion.version.equals("1.20.1")) {
-			throw new RuntimeException("This is a testing implementation, other versions are not yet supported");
-		}
-		Path mappingsFileTiny = GitCraft.MAPPINGS.resolve(String.format("%s-parchment-%s.tiny", mcVersion.version, "1.20.1-2023.09.03"));
+	private static Path mappingsPathParchment(McVersion mcVersion) throws Exception {
+		String parchmentLatestReleaseVersionBuild = RemoteHelper.readMavenLatestRelease(String.format("https://maven.parchmentmc.org/org/parchmentmc/data/parchment-%s/maven-metadata.xml", mcVersion.version));
+		Path mappingsFileTiny = GitCraft.MAPPINGS.resolve(String.format("%s-parchment-%s-%s.tiny", mcVersion.version, mcVersion.version, parchmentLatestReleaseVersionBuild));
 		if (mappingsFileTiny.toFile().exists()) {
 			return mappingsFileTiny;
 		}
-		Path mappingsFileJson = GitCraft.MAPPINGS.resolve(String.format("%s-parchment-%s.json", mcVersion.version, "1.20.1-2023.09.03"));
+		Path mappingsFileJson = GitCraft.MAPPINGS.resolve(String.format("%s-parchment-%s-%s.json", mcVersion.version, mcVersion.version, parchmentLatestReleaseVersionBuild));
 		if (!mappingsFileJson.toFile().exists()) {
-			Path mappingsFileJar = GitCraft.MAPPINGS.resolve(String.format("%s-parchment-%s.jar", mcVersion.version, "1.20.1-2023.09.03"));
+			Path mappingsFileJar = GitCraft.MAPPINGS.resolve(String.format("%s-parchment-%s-%s.jar", mcVersion.version, mcVersion.version, parchmentLatestReleaseVersionBuild));
 			RemoteHelper.downloadToFileWithChecksumIfNotExistsNoRetry(
-				"https://maven.parchmentmc.org/org/parchmentmc/data/parchment-1.20.1/2023.09.03/parchment-1.20.1-2023.09.03.zip",
+				String.format("https://maven.parchmentmc.org/org/parchmentmc/data/parchment-%s/%s/parchment-%s-%s.zip", mcVersion.version, parchmentLatestReleaseVersionBuild, mcVersion.version, parchmentLatestReleaseVersionBuild),
 				mappingsFileJar,
 				null,
 				"parchment mapping",

diff --git a/src/main/groovy/com/github/winplay02/RemoteHelper.java b/src/main/groovy/com/github/winplay02/RemoteHelper.java
@@ -1,7 +1,10 @@
 package com.github.winplay02;
 
 import dex.mcgitmaker.GitCraft;
+import org.w3c.dom.Document;
 
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.xpath.XPathFactory;
 import java.io.BufferedInputStream;
 import java.io.File;
 import java.io.FileInputStream;
@@ -197,4 +200,9 @@ public static String urlencodedURL(String url) {
 			throw new RuntimeException(e);
 		}
 	}
+
+	public static String readMavenLatestRelease(String mavenMetadata) throws Exception {
+		Document document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(mavenMetadata);
+		return XPathFactory.newInstance().newXPath().compile("/metadata/versioning/release").evaluate(document);
+	}
 }