├── .gitignore
├── README.md
└── modRemapper.sh


/.gitignore:
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1 | mappings
2 | tiny-remapper
3 | *.jar


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/README.md:
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1 | # ModRemapper
2 | Automagically downloads the correct mappings for the specified game version, downloads tiny-remapper and remaps the given jar from intermediary to named.
3 | 
4 | ## Usage
5 | `modRemapper.sh <path to jarfile> <mappings version>`
6 | 
7 | Example: `modRemapper.sh input.jar 1.19.3+build.5` to remap `input.jar`, which used `1.19.3+build.5` mappings, from intermediary to named mappings.
8 | 
9 | The mapped output jarfile will be located in the same directory as the input jarfile, with the `-remapped` suffix. Ex. for `input.jar`: `input-remapped.jar`


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/modRemapper.sh:
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 1 | #!/usr/bin/env bash
 2 | 
 3 | return_code_neq_failhard() {
 4 |     if [ $? -ne "$1" ]; then
 5 |         echo "$2"
 6 |         exit 1
 7 |     fi
 8 | }
 9 | 
10 | if ! command -v git &> /dev/null; then
11 |     echo "[!] The git command couldn't be found. Install git first, then re-run the script."
12 |     exit 1
13 | fi
14 | 
15 | if ! command -v curl &> /dev/null; then
16 |     echo "[!] The curl command couldn't be found. Install curl first, then re-run the script."
17 |     exit 1
18 | fi
19 | 
20 | if [ "$JAVA_HOME" != "" ]; then
21 |     JAVA_PATH="$JAVA_HOME/bin/java"
22 | else
23 |     JAVA_PATH=$(command -v java)
24 | fi
25 | 
26 | if [ ! "$JAVA_PATH" ]; then
27 |     echo "[!] Java couldn't be found. Please first install java or set JAVA_HOME, then re-run the script."
28 |     exit 1
29 | fi
30 | if [ ! -f "$JAVA_PATH" ]; then
31 |     echo "[!] $JAVA_HOME points to an invalid JRE installation. Please make sure that $JAVA_HOME/bin/java exists"
32 |     exit 1
33 | fi
34 | 
35 | BASE_DIR=$(readlink -f "$(dirname -- "$0")")
36 | r1=$?
37 | GIT_PATH=$(command -v git)
38 | r2=$?
39 | if [ $r1 -ne 0 ] || [ $r2 -ne 0 ]; then
40 |     echo "[!] fatal: Failed to set up. dirname exit code: $r1. pwd exit code: $r2"
41 |     exit 1
42 | fi
43 | 
44 | echo "[#] Base directory is $BASE_DIR"
45 | echo "[#] Git @ $GIT_PATH"
46 | echo "[#] Java @ $JAVA_PATH"
47 | 
48 | if [ "$#" -lt 2 ]; then
49 |     echo "Syntax: modRemapper.sh modJarfile.jar mappingsToUse"
50 |     echo "Example: modRemapper.sh modJarfile.jar 1.19.3+build.5 # mod compiled for minecraft 1.19.3, use 5th build of mappings. See https://fabricmc.net/develop/"
51 |     exit 0
52 | fi
53 | 
54 | INP_JAR="$1"
55 | GAME_VERSION="$2"
56 | TMP_DIR=".tmp"
57 | echo "[#] Input jarfile is $INP_JAR"
58 | echo "[#] Game version is $GAME_VERSION"
59 | 
60 | if [ ! -f "$INP_JAR" ]; then
61 |     echo "[!] fatal: Input jarfile does not exist or is not a file"
62 |     exit 1
63 | fi
64 | 
65 | MAPPINGS_LOC="$BASE_DIR/$TMP_DIR/mappings/mappings.tiny"
66 | MAPPINGS_URL="https://maven.fabricmc.net/net/fabricmc/yarn/$GAME_VERSION/yarn-$GAME_VERSION-v2.jar"
67 | 
68 | echo "[+] Getting mappings @ $MAPPINGS_URL ..."
69 | if [ "200" != "$(curl -LI "$MAPPINGS_URL" -o /dev/null -w '%{http_code}\n' -s)" ]; then
70 |     echo "[!] Server returned non-200 code, does the mappings version exist?"
71 |     exit 1
72 | fi
73 | 
74 | if [ -e "$BASE_DIR/$TMP_DIR" ]; then
75 |     rm -vr "${BASE_DIR:-"."}/${TMP_DIR:-"the_void_aabbcc123123123"}" # be VERY careful here
76 | fi
77 | mkdir -p "$BASE_DIR/$TMP_DIR"
78 | OUT_JF="$BASE_DIR/$TMP_DIR/mappings-$GAME_VERSION.jar"
79 | 
80 | curl -L --progress-bar "$MAPPINGS_URL" -o "$OUT_JF"
81 | return_code_neq_failhard 0 "[!] Failed to download mappings. Please report this as a bug."
82 | 
83 | unzip -q "$OUT_JF" -d "$BASE_DIR/$TMP_DIR"
84 | 
85 | TINY_REMAPPER_LOC="$BASE_DIR/tiny-remapper.jar"
86 | if [ ! -f "$TINY_REMAPPER_LOC" ]; then
87 |     echo "[+] Downloading tiny-remapper..."
88 |     curl -L --progress-bar "https://maven.fabricmc.net/net/fabricmc/tiny-remapper/0.8.6/tiny-remapper-0.8.6-fat.jar" -o "$TINY_REMAPPER_LOC"
89 |     return_code_neq_failhard 0 "[!] Failed to download tiny-remapper. Please report this as a bug."
90 | fi
91 | 
92 | echo "[+] Running tiny-remapper"
93 | OUT_JAR="$(dirname "$INP_JAR")/$(basename "$INP_JAR" ".jar")-remapped.jar"
94 | "$JAVA_PATH" -jar "$TINY_REMAPPER_LOC" "$INP_JAR" "$OUT_JAR" "$MAPPINGS_LOC" "intermediary" "named"
95 | return_code_neq_failhard 0 "[!] Failed to remap. Not sure how to continue from here..."
96 | 
97 | echo "[+] Done remapping! Remapped jarfile @ $OUT_JAR"
98 | rm -r "$BASE_DIR/.tmp"


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