Minecraft Stack Trace Deobfuscator

unobf.pl

#!/usr/bin/perl

use strict;
use warnings;

our $mapping = {};
while (my $line = <DATA>) {
	my ($searge, $name, undef) = split /,/, $line;
	if (defined $searge and defined $name) {
		$mapping->{$searge} = $name;
	}
}

while (my $line = <>) {
	$line =~ s/((?:func|field)_\d+_[a-z]+)/$mapping->{$1} || $1/ge;
	print $line;
}

__DATA__
field_100013_f,isPotionDurationMax,0,"True if potion effect duration is at maximum, false otherwise."

download mcp940.zip from http://www.modcoderpack.com/ and put the contents of the conf/fields.csv and
conf/methods.csv here

func_99999_d,run,0,