Add create-branch.sh

create-branch.sh

@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+
+# USAGE: bash create-branch.sh <version>
+
+mc_version_manifest='https://launchermeta.mojang.com/mc/game/version_manifest.json'
+enigma='java -jar enigma/enigma-cli/build/libs/enigma-cli-0.21+local-all.jar'
+
+# check dependencies. this script requires jq
+if [ $(dpkg-query -W -f='${Status}' jq 2>/dev/null | grep -c "ok installed") -eq 0 ];
+then
+	echo "'jq' is not installed, run 'sudo apt-get install jq' to use this script"
+	exit
+fi
+
+# new branch
+echo "Creating branch '$1'"
+git checkout -b $1
+
+# find our version.json file
+echo 'Reading version_manifest.json...'
+json_file=$(curl -s $mc_version_manifest | jq -r --arg version $1 '.versions[] | select(.id == $version).url')
+
+# find jar and mappings url
+echo "Reading $1.json..."
+json_file_contents=$(curl -s $json_file)
+client_jar=$(echo $json_file_contents | jq -r '.downloads.client.url')
+client_mappings=$(echo $json_file_contents | jq -r '.downloads.client_mappings.url')
+
+# download client.jar
+echo "Downloading client.jar..."
+curl -# -o client.jar $client_jar
+
+# download client.txt
+echo "Downloading ProGuard mappings: client.txt..."
+curl -# -o client.txt $client_mappings
+
+# remove current src directory
+rm -rf src
+
+echo "Converting ProGuard mappings to Engima mappings: client.mappings..."
+$enigma convert-mappings proguard client.txt enigma_file client.mappings
+
+mkdir src
+
+echo "Decompiling client.jar..."
+$enigma decompile procyon client.jar src client.mappings
+
+echo "Committing changes..."
+git add *
+git commit -m "Update to $1"