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author zaaarf <zaaarf@proton.me>2023-06-11 14:48:24 +0200
committer zaaarf <zaaarf@proton.me>2023-06-11 14:48:24 +0200
commit7c427316a675cbe7e81a04294781c59f2606239d (patch)
tree3a4efc720f44205db6c518ee854f03eebf215e7c
feat: initial implementation, created interface and moved stuff from processor
-rw-r--r--.editorconfig10
-rw-r--r--.gitignore26
-rw-r--r--build.gradle27
-rw-r--r--gradle/wrapper/gradle-wrapper.jarbin0 -> 61574 bytes
-rw-r--r--gradle/wrapper/gradle-wrapper.properties6
-rw-r--r--gradlew244
-rw-r--r--gradlew.bat92
-rw-r--r--src/main/java/ftbsc/lll/exceptions/AmbiguousMappingException.java27
-rw-r--r--src/main/java/ftbsc/lll/exceptions/MappingNotFoundException.java27
-rw-r--r--src/main/java/ftbsc/lll/mapper/IMapper.java56
-rw-r--r--src/main/java/ftbsc/lll/mapper/impl/TSRGMapper.java72
-rw-r--r--src/main/java/ftbsc/lll/mapper/tools/ClassData.java100
-rw-r--r--src/main/java/ftbsc/lll/mapper/tools/MappingUtils.java56
13 files changed, 743 insertions, 0 deletions
diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..b14394e
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,10 @@
+# Default to Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+indent_style = tab
+indent_size = 4
+
+[*.java]
+indent_size = 2
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..86151fa
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,26 @@
+# eclipse
+bin
+*.launch
+.settings
+.metadata
+.classpath
+.project
+
+# idea
+out
+*.ipr
+*.iws
+*.iml
+.idea
+
+# gradle
+build
+.gradle
+gradle.properties
+
+# other
+eclipse
+run
+
+# Files from Forge MDK
+forge*changelog.txt
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..7c18fc6
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,27 @@
+plugins {
+ id 'java-library'
+ id 'com.palantir.git-version' version '0.13.0'
+}
+
+archivesBaseName = 'lll-mapper'
+version = gitVersion()
+
+java {
+ sourceCompatibility = JavaVersion.VERSION_1_8
+ targetCompatibility = JavaVersion.VERSION_1_8
+ withSourcesJar()
+ withJavadocJar()
+}
+
+repositories {
+ mavenCentral()
+ maven { url = 'https://maven.fantabos.co' }
+}
+
+dependencies {
+ implementation 'ftbsc:lll:0.4.1'
+}
+
+jar {
+ archiveFileName = "${jar.archiveBaseName.get()}-${project.version.split('-')[0]}.${jar.archiveExtension.get()}"
+}
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..943f0cb
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.jar
Binary files differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..f398c33
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.6-bin.zip
+networkTimeout=10000
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
new file mode 100644
index 0000000..65dcd68
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,244 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+# Gradle start up script for POSIX generated by Gradle.
+#
+# Important for running:
+#
+# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+# noncompliant, but you have some other compliant shell such as ksh or
+# bash, then to run this script, type that shell name before the whole
+# command line, like:
+#
+# ksh Gradle
+#
+# Busybox and similar reduced shells will NOT work, because this script
+# requires all of these POSIX shell features:
+# * functions;
+# * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+# «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+# * compound commands having a testable exit status, especially «case»;
+# * various built-in commands including «command», «set», and «ulimit».
+#
+# Important for patching:
+#
+# (2) This script targets any POSIX shell, so it avoids extensions provided
+# by Bash, Ksh, etc; in particular arrays are avoided.
+#
+# The "traditional" practice of packing multiple parameters into a
+# space-separated string is a well documented source of bugs and security
+# problems, so this is (mostly) avoided, by progressively accumulating
+# options in "$@", and eventually passing that to Java.
+#
+# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+# see the in-line comments for details.
+#
+# There are tweaks for specific operating systems such as AIX, CygWin,
+# Darwin, MinGW, and NonStop.
+#
+# (3) This script is generated from the Groovy template
+# https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+# within the Gradle project.
+#
+# You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+ APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path
+ [ -h "$app_path" ]
+do
+ ls=$( ls -ld "$app_path" )
+ link=${ls#*' -> '}
+ case $link in #(
+ /*) app_path=$link ;; #(
+ *) app_path=$APP_HOME$link ;;
+ esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+ echo "$*"
+} >&2
+
+die () {
+ echo
+ echo "$*"
+ echo
+ exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in #(
+ CYGWIN* ) cygwin=true ;; #(
+ Darwin* ) darwin=true ;; #(
+ MSYS* | MINGW* ) msys=true ;; #(
+ NONSTOP* ) nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+ if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+ # IBM's JDK on AIX uses strange locations for the executables
+ JAVACMD=$JAVA_HOME/jre/sh/java
+ else
+ JAVACMD=$JAVA_HOME/bin/java
+ fi
+ if [ ! -x "$JAVACMD" ] ; then
+ die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+ fi
+else
+ JAVACMD=java
+ which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+ case $MAX_FD in #(
+ max*)
+ # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+ # shellcheck disable=SC3045
+ MAX_FD=$( ulimit -H -n ) ||
+ warn "Could not query maximum file descriptor limit"
+ esac
+ case $MAX_FD in #(
+ '' | soft) :;; #(
+ *)
+ # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+ # shellcheck disable=SC3045
+ ulimit -n "$MAX_FD" ||
+ warn "Could not set maximum file descriptor limit to $MAX_FD"
+ esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+# * args from the command line
+# * the main class name
+# * -classpath
+# * -D...appname settings
+# * --module-path (only if needed)
+# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+ APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+ CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+ JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+ # Now convert the arguments - kludge to limit ourselves to /bin/sh
+ for arg do
+ if
+ case $arg in #(
+ -*) false ;; # don't mess with options #(
+ /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath
+ [ -e "$t" ] ;; #(
+ *) false ;;
+ esac
+ then
+ arg=$( cygpath --path --ignore --mixed "$arg" )
+ fi
+ # Roll the args list around exactly as many times as the number of
+ # args, so each arg winds up back in the position where it started, but
+ # possibly modified.
+ #
+ # NB: a `for` loop captures its iteration list before it begins, so
+ # changing the positional parameters here affects neither the number of
+ # iterations, nor the values presented in `arg`.
+ shift # remove old arg
+ set -- "$@" "$arg" # push replacement arg
+ done
+fi
+
+# Collect all arguments for the java command;
+# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+# shell script including quotes and variable substitutions, so put them in
+# double quotes to make sure that they get re-expanded; and
+# * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+ "-Dorg.gradle.appname=$APP_BASE_NAME" \
+ -classpath "$CLASSPATH" \
+ org.gradle.wrapper.GradleWrapperMain \
+ "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+ die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+# readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+# set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+ printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+ xargs -n1 |
+ sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+ tr '\n' ' '
+ )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000..93e3f59
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,92 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/src/main/java/ftbsc/lll/exceptions/AmbiguousMappingException.java b/src/main/java/ftbsc/lll/exceptions/AmbiguousMappingException.java
new file mode 100644
index 0000000..794759a
--- /dev/null
+++ b/src/main/java/ftbsc/lll/exceptions/AmbiguousMappingException.java
@@ -0,0 +1,27 @@
+package ftbsc.lll.exceptions;
+
+import ftbsc.lll.mapper.IMapper;
+
+/**
+ * Thrown when a given {@link IMapper} cannot uniquely identify a mapping with
+ * the given data.
+ */
+public class AmbiguousMappingException extends RuntimeException {
+
+ /**
+ * Constructs a new ambiguous mapping definition exception with the specified detail message.
+ * @param message the detail message
+ */
+ public AmbiguousMappingException(String message) {
+ super(message);
+ }
+
+ /**
+ * Constructs a new ambiguous definition exception with the specified detail message and cause.
+ * @param message the detail message
+ * @param cause the cause, may be null (indicating nonexistent or unknown cause)
+ */
+ public AmbiguousMappingException(String message, Throwable cause) {
+ super(message, cause);
+ }
+} \ No newline at end of file
diff --git a/src/main/java/ftbsc/lll/exceptions/MappingNotFoundException.java b/src/main/java/ftbsc/lll/exceptions/MappingNotFoundException.java
new file mode 100644
index 0000000..6c286fc
--- /dev/null
+++ b/src/main/java/ftbsc/lll/exceptions/MappingNotFoundException.java
@@ -0,0 +1,27 @@
+package ftbsc.lll.exceptions;
+
+import ftbsc.lll.mapper.IMapper;
+
+/**
+ * Thrown upon failure to find the requested mapping within a loaded {@link IMapper}.
+ */
+public class MappingNotFoundException extends RuntimeException {
+
+ /**
+ * Constructs a new mapping not found exception for the specified mapping.
+ * @param mapping the relevant mapping
+ */
+ public MappingNotFoundException(String mapping) {
+ super(String.format("Could not find mapping for %s!", mapping));
+ }
+
+ /**
+ * Constructs a new mapping not found exception for the specified mapping
+ * with the specified reason.
+ * @param mapping the relevant mapping
+ * @param reason the reason message
+ */
+ public MappingNotFoundException(String mapping, String reason) {
+ this(mapping + ": " + reason);
+ }
+}
diff --git a/src/main/java/ftbsc/lll/mapper/IMapper.java b/src/main/java/ftbsc/lll/mapper/IMapper.java
new file mode 100644
index 0000000..8adf860
--- /dev/null
+++ b/src/main/java/ftbsc/lll/mapper/IMapper.java
@@ -0,0 +1,56 @@
+package ftbsc.lll.mapper;
+
+import ftbsc.lll.exceptions.MappingNotFoundException;
+
+import java.util.HashSet;
+import java.util.ServiceLoader;
+import java.util.Set;
+
+/**
+ * A generic obfuscation mapper.
+ */
+public interface IMapper {
+
+ /**
+ * Reads the given lines of text and attempts to interpret them as
+ * mappings of the given type.
+ * @param lines the lines to read
+ */
+ void populate(Iterable<String> lines);
+
+ /**
+ * Gets the obfuscated name of the class.
+ * @param name the unobfuscated internal name of the desired class
+ * @return the obfuscated name of the class
+ * @throws MappingNotFoundException if no mapping is found
+ */
+ String obfuscateClass(String name);
+
+ /**
+ * Gets the obfuscated name of a class member (field or method).
+ * @param parentName the unobfuscated internal name of the parent class
+ * @param memberName the field name or method signature
+ * @param methodDescriptor the descriptor of the member
+ * @return the obfuscated name of the given member
+ * @throws MappingNotFoundException if no mapping is found
+ */
+ String obfuscateMember(String parentName, String memberName, String methodDescriptor);
+
+ /**
+ * Loads all valid parsers available in the classpath (via the Java Service API),
+ * attempts to parse the given lines into mappings, and returns all built mappers
+ * that succeeded without throwing errors or ftbsc.lll.exceptions.
+ * @param lines the lines of the mapping file
+ * @return a {@link Set} of mappers that could interpret the given input
+ */
+ static Set<IMapper> getMappers(Iterable<String> lines) {
+ Set<IMapper> parsed = new HashSet<>();
+ for(IMapper mapper: ServiceLoader.load(IMapper.class)) {
+ try {
+ mapper.populate(lines);
+ parsed.add(mapper);
+ } catch(Throwable ignored) {}
+ }
+ return parsed;
+ }
+}
diff --git a/src/main/java/ftbsc/lll/mapper/impl/TSRGMapper.java b/src/main/java/ftbsc/lll/mapper/impl/TSRGMapper.java
new file mode 100644
index 0000000..0fc6489
--- /dev/null
+++ b/src/main/java/ftbsc/lll/mapper/impl/TSRGMapper.java
@@ -0,0 +1,72 @@
+package ftbsc.lll.mapper.impl;
+
+import ftbsc.lll.exceptions.MappingNotFoundException;
+import ftbsc.lll.mapper.IMapper;
+import ftbsc.lll.mapper.tools.ClassData;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Parses a .tsrg file into a mapper capable of converting from
+ * plain names to obfuscated ones and vice versa.
+ */
+public class TSRGMapper implements IMapper {
+
+ /**
+ * A Map containing the deobfuscated names as keys and information about
+ * each class as values.
+ */
+ private final Map<String, ClassData> mappings = new HashMap<>();
+
+ /**
+ * Reads the given lines of text and attempts to interpret them as
+ * mappings of the given type.
+ * @param lines the lines to read
+ */
+ @Override
+ public void populate(Iterable<String> lines) {
+ String currentClass = "";
+ for(String l : lines) {
+ if(l == null) continue;
+ if(l.startsWith("\t"))
+ mappings.get(currentClass).addMember(l);
+ else {
+ String[] sp = l.split(" ");
+ ClassData s = new ClassData(sp[0], sp[1]);
+ currentClass = s.unobf;
+ mappings.put(s.unobf, s);
+ }
+ }
+ }
+
+ /**
+ * Gets the obfuscated name of the class.
+ * @param name the unobfuscated internal name of the desired class
+ * @return the obfuscated name of the class
+ * @throws MappingNotFoundException if no mapping is found
+ */
+ @Override
+ public String obfuscateClass(String name) {
+ ClassData data = mappings.get(name.replace('.', '/'));
+ if(data == null)
+ throw new MappingNotFoundException(name);
+ else return data.obf;
+ }
+
+ /**
+ * Gets the obfuscated name of a class member (field or method).
+ * @param parentName the unobfuscated internal name of the parent class
+ * @param memberName the field name or method signature
+ * @param methodDescriptor the optional descriptor of the member, may be null or partial
+ * @return the obfuscated name of the given member
+ * @throws MappingNotFoundException if no mapping is found
+ */
+ @Override
+ public String obfuscateMember(String parentName, String memberName, String methodDescriptor) {
+ ClassData data = mappings.get(parentName.replace('.', '/'));
+ if(data == null)
+ throw new MappingNotFoundException(parentName + "::" + memberName);
+ return data.get(memberName, methodDescriptor);
+ }
+}
diff --git a/src/main/java/ftbsc/lll/mapper/tools/ClassData.java b/src/main/java/ftbsc/lll/mapper/tools/ClassData.java
new file mode 100644
index 0000000..a9fbcec
--- /dev/null
+++ b/src/main/java/ftbsc/lll/mapper/tools/ClassData.java
@@ -0,0 +1,100 @@
+package ftbsc.lll.mapper.tools;
+
+import ftbsc.lll.exceptions.AmbiguousMappingException;
+import ftbsc.lll.exceptions.MappingNotFoundException;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+/**
+ * Container class used to store information about classes.
+ */
+public class ClassData {
+ /**
+ * The unobfuscated name (FQN with '/' instad of '.') of the class.
+ */
+ public final String unobf;
+
+ /**
+ * The obfuscated internal name (FQN with '/' instad of '.') of the class.
+ */
+ public final String obf;
+
+ /**
+ * A {@link Map} tying each member's name or signature to its
+ * obfuscated counterpart.
+ */
+ public final Map<String, String> members;
+
+ /**
+ * The constructor. It takes in the names (obfuscated and non-obfuscated)
+ * of a class.
+ * @param unobf the unobfuscated name
+ * @param obf the obfuscated name
+ */
+ public ClassData(String unobf, String obf) {
+ this.unobf = unobf;
+ this.obf = obf;
+ this.members = new HashMap<>();
+ }
+
+ /**
+ * Adds a member to the target class.
+ * For fields only the names are required; for methods,
+ * this takes in the full signature ({@code name + " " + space}).
+ * @param s the String representing the declaration line
+ */
+ public void addMember(String s) {
+ String[] split = s.trim().split(" ");
+ if(split.length == 2) //field
+ members.put(split[0], split[1]);
+ else if (split.length == 3) //method
+ members.put(split[0] + " " + split[1], split[2]);
+ }
+
+ /**
+ * Gets an obfuscated member given the method name and a method descriptor,
+ * which may be partial (i.e. not include return type) or null if the member
+ * is not a method.
+ * @param memberName member name
+ * @param methodDescriptor the method descriptor, or null if it's not a method
+ * @return the requested obfuscated name, or null if nothing was found
+ * @throws AmbiguousMappingException if not enough data was given to uniquely identify a mapping
+ */
+ public String get(String memberName, String methodDescriptor) {
+
+ //find all keys that start with the name
+ List<String> candidates = members.keySet().stream().filter(
+ m -> m.split(" ")[0].equals(memberName)
+ ).collect(Collectors.toList());
+
+ if(methodDescriptor != null) {
+ String signature = String.format("%s %s", memberName, methodDescriptor);
+ candidates = candidates.stream().filter(
+ m -> m.equals(signature)
+ ).collect(Collectors.toList());
+ }
+
+ switch(candidates.size()) {
+ case 0:
+ throw new MappingNotFoundException(String.format(
+ "%s.%s%s",
+ this.unobf,
+ memberName,
+ methodDescriptor == null ? "" : "()"
+ ));
+ case 1:
+ return members.get(candidates.get(0));
+ default:
+ throw new AmbiguousMappingException(String.format(
+ "Mapper could not uniquely identify member %s.%s%s, found %d!",
+ this.unobf,
+ memberName,
+ methodDescriptor == null ? "" : "()",
+ candidates.size()
+ ));
+ }
+ }
+} \ No newline at end of file
diff --git a/src/main/java/ftbsc/lll/mapper/tools/MappingUtils.java b/src/main/java/ftbsc/lll/mapper/tools/MappingUtils.java
new file mode 100644
index 0000000..918052a
--- /dev/null
+++ b/src/main/java/ftbsc/lll/mapper/tools/MappingUtils.java
@@ -0,0 +1,56 @@
+package ftbsc.lll.mapper.tools;
+
+import ftbsc.lll.exceptions.MappingNotFoundException;
+import ftbsc.lll.mapper.IMapper;
+import ftbsc.lll.tools.DescriptorBuilder;
+import org.objectweb.asm.Type;
+
+public class MappingUtils {
+ /**
+ * Obfuscates a method descriptor, replacing its class references
+ * with their obfuscated counterparts.
+ * @param descriptor a {@link String} containing the descriptor
+ * @return the obfuscated descriptor
+ */
+ public static String obfuscateMethodDescriptor(String descriptor, IMapper mapper) {
+ Type method = Type.getMethodType(descriptor);
+ Type[] arguments = method.getArgumentTypes();
+ Type returnType = method.getReturnType();
+
+ Type[] obfArguments = new Type[arguments.length];
+ for(int i = 0; i < obfArguments.length; i++)
+ obfArguments[i] = obfuscateType(arguments[i], mapper);
+
+ return Type.getMethodDescriptor(obfuscateType(returnType, mapper), obfArguments);
+ }
+
+ /**
+ * Given a {@link Type} and a valid {@link IMapper} it returns its obfuscated
+ * counterpart.
+ * @param type the type in question
+ * @return the obfuscated type
+ */
+ public static Type obfuscateType(Type type, IMapper mapper) {
+ //unwrap arrays
+ Type unwrapped = type;
+ int arrayLevel = 0;
+ while(unwrapped.getSort() == Type.ARRAY) {
+ unwrapped = unwrapped.getElementType();
+ arrayLevel++;
+ }
+
+ //if it's a primitive no operation is needed
+ if(type.getSort() < Type.ARRAY)
+ return type;
+
+ String internalName = type.getInternalName();
+
+ String internalNameObf;
+ try {
+ internalNameObf = mapper.obfuscateClass(internalName);
+ return Type.getType(DescriptorBuilder.nameToDescriptor(internalNameObf, arrayLevel));
+ } catch(MappingNotFoundException e) {
+ return type;
+ }
+ }
+}