Update official mappings warning, and add to Patcher Plugin.

Author: LexManos

src/common/java/net/minecraftforge/gradle/common/util/MojangLicenseHelper.java

@@ -0,0 +1,38 @@
+/*
+ * 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.util;
+
+import org.gradle.api.Project;
+
+public class MojangLicenseHelper {
+    //TODO: Add a task that people can run to quiet this warning.
+    //Also output the specific text from the targeted MC version.
+    public static void displayWarning(Project project, String channel) {
+        if ("official".equals(channel)) {
+            String warning = "WARNING: "
+                + "This project is configured to use the official obfuscation mappings provided by Mojang. "
+                + "These mapping fall under their associated license, you should be fully aware of this license. "
+                + "For the latest license text, refer to the mapping file itself, or the reference copy here: "
+                + "https://github.com/MinecraftForge/MCPConfig/blob/master/Mojang.md";
+            project.getLogger().warn(warning);
+        }
+    }
+}

src/common/java/net/minecraftforge/gradle/common/util/Utils.java

@@ -108,11 +108,6 @@ public class Utils {
     public static final String INSTALLERTOOLS = "net.minecraftforge:installertools:1.1.10:fatjar";
     public static final long ZIPTIME = 628041600000L;
     public static final TimeZone GMT = TimeZone.getTimeZone("GMT");
-    public static final String OFFICIAL_MAPPING_USAGE =
-            "These mapping files are licensed as All Rights Reserved with permission to use the contents for INTERNAL, "
-          + "REFERENCE purposes. Please avoid publishing any source code referencing these mappings. A full copy of "
-          + "the license can be found at the top of the mapping file itself and in the 19w36a snapshot article at: "
-          + "https://www.minecraft.net/en-us/article/minecraft-snapshot-19w36a.";
 
     public static void extractFile(ZipFile zip, String name, File output) throws IOException {
         extractFile(zip, zip.getEntry(name), output);

src/mcp/java/net/minecraftforge/gradle/mcp/util/MCPEnvironment.java

@@ -21,7 +21,6 @@
 package net.minecraftforge.gradle.mcp.util;
 
 import net.minecraftforge.srgutils.MinecraftVersion;
-import net.minecraftforge.gradle.mcp.function.MCPFunction;
 import org.gradle.api.Project;
 import org.gradle.api.logging.Logger;
 

src/patcher/java/net/minecraftforge/gradle/patcher/PatcherPlugin.java

@@ -31,6 +31,7 @@
 import net.minecraftforge.gradle.common.util.BaseRepo;
 import net.minecraftforge.gradle.common.util.MavenArtifactDownloader;
 import net.minecraftforge.gradle.common.util.MinecraftRepo;
+import net.minecraftforge.gradle.common.util.MojangLicenseHelper;
 import net.minecraftforge.gradle.common.util.Utils;
 import net.minecraftforge.gradle.common.util.VersionJson;
 import net.minecraftforge.gradle.mcp.MCPExtension;
@@ -304,6 +305,7 @@ public void apply(@Nonnull Project project) {
         if (doingUpdate) {
             String version = (String) project.property("UPDATE_MAPPINGS");
             String channel = project.hasProperty("UPDATE_MAPPINGS_CHANNEL") ? (String) project.property("UPDATE_MAPPINGS_CHANNEL") : "snapshot";
+            MojangLicenseHelper.displayWarning(project, channel);
 
             TaskProvider<DownloadMCPMappingsTask> dlMappingsNew = project.getTasks().register("downloadMappingsNew", DownloadMCPMappingsTask.class);
             dlMappingsNew.get().setMappings(channel + '_' + version);
@@ -327,6 +329,8 @@ public void apply(@Nonnull Project project) {
         }
 
         project.afterEvaluate(p -> {
+            MojangLicenseHelper.displayWarning(p, extension.getMappingChannel());
+
             //Add PatchedSrc to a main sourceset and build range tasks
             SourceSet mainSource = javaConv.getSourceSets().getByName("main");
             applyRangeConfig.get().setSources(mainSource.getJava().getSrcDirs().stream().filter(f -> !f.equals(extension.patchedSrc)).collect(Collectors.toList()));

src/userdev/java/net/minecraftforge/gradle/userdev/UserDevPlugin.java

@@ -23,6 +23,7 @@
 import net.minecraftforge.gradle.common.task.*;
 import net.minecraftforge.gradle.common.util.BaseRepo;
 import net.minecraftforge.gradle.common.util.MinecraftRepo;
+import net.minecraftforge.gradle.common.util.MojangLicenseHelper;
 import net.minecraftforge.gradle.common.util.Utils;
 import net.minecraftforge.gradle.common.util.VersionJson;
 import net.minecraftforge.gradle.mcp.MCPRepo;
@@ -162,10 +163,7 @@ public void apply(@Nonnull Project project) {
             String channel = project.hasProperty("UPDATE_MAPPINGS_CHANNEL") ? (String)project.property("UPDATE_MAPPINGS_CHANNEL") : "snapshot";
 
             logger.lifecycle("This process uses Srg2Source for java source file renaming. Please forward relevant bug reports to https://github.com/MinecraftForge/Srg2Source/issues.");
-            if ("official".equals(channel)) {
-                String warning = "WARNING: This project will be updated to use the official obfuscation mappings provided by Mojang. " + Utils.OFFICIAL_MAPPING_USAGE;
-                logger.warn(warning);
-            }
+            MojangLicenseHelper.displayWarning(project, channel);
 
             JavaCompile javaCompile = (JavaCompile) project.getTasks().getByName("compileJava");
             JavaPluginConvention javaConv = (JavaPluginConvention) project.getConvention().getPlugins().get("java");
@@ -211,10 +209,7 @@ public void apply(@Nonnull Project project) {
         }
 
         project.afterEvaluate(p -> {
-            if ("official".equals(extension.getMappingChannel())) {
-                String warning = "WARNING: This project is configured to use the official obfuscation mappings provided by Mojang. " + Utils.OFFICIAL_MAPPING_USAGE;
-                logger.warn(warning);
-            }
+            MojangLicenseHelper.displayWarning(p, extension.getMappingChannel());
 
             MinecraftUserRepo mcrepo = null;
             DeobfuscatingRepo deobfrepo = null;
@@ -229,7 +224,7 @@ public void apply(@Nonnull Project project) {
 
                 mcrepo = new MinecraftUserRepo(p, dep.getGroup(), dep.getName(), dep.getVersion(), extension.getAccessTransformers(), extension.getMappings());
                 String newDep = mcrepo.getDependencyString();
-                p.getLogger().lifecycle("New Dep: " + newDep);
+                //p.getLogger().lifecycle("New Dep: " + newDep);
                 ExternalModuleDependency ext = (ExternalModuleDependency) p.getDependencies().create(newDep);
                 {
                     if (MinecraftUserRepo.CHANGING_USERDEV)