text_dump.py

import os
import struct
import sys

def read_short_be(file):
    return struct.unpack(">H", file.read(2))[0]

def read_int_be(file):
    return struct.unpack(">I", file.read(4))[0]

def dump_text(filename):
    file = open(filename, "rb")
    
    if file.read(4) != "SDL2":
        print "Invalid SDL2 file"
        exit(-1)
    
    # Don't need these for now, but they can be used later to reencrypt the script
    # so it might be good to save these if anyone wants to turn this into a serious
    # script dumping tool
    key = file.read(3)
    mul = file.read(1)
    
    unk_table_count = read_short_be(file)
    string_table_count = read_short_be(file)
    
    string_table_offset = read_int_be(file)
    unk_table_offset = read_int_be(file)
    
    file.seek(-8, 1) # Rewind so we can read the previous entries in a loop
    
    output_filename = filename + ".txt"
    output = open(output_filename,"wb")
    file.seek(unk_table_count * 8 + 0x0c)
    for i in range(0, string_table_count):
        string_offset = read_int_be(file)
        cur_offset = file.tell()
        
        file.seek(string_offset)
        
        string_len = read_short_be(file)
        string = file.read(string_len)
        
        output.write("<%08x> " % string_offset)
        output.write(string)
        output.write("\r\n")
        
        file.seek(cur_offset)
        
    
if __name__ == "__main__":
    if len(sys.argv) != 2:
        print "usage: %s input_file" % (sys.argv[0])
        exit()
        
    dump_text(sys.argv[1])