commdec.py

#!/usr/bin/env python3
with open("comm.dat", "rb") as f:
    d = f.read()

d = bytearray(d)
key = 0
for i in range(len(d)):
    d[i] = d[i] ^ ((key * 43) % 256)
    key += 1

parsed = []
stack = [parsed]
strbuf = ""
for c in d.decode():
    if c in (" ", "\t", "{", "}"):
        if strbuf != "":
            stack[-1].append(strbuf)
            strbuf = ""
    
    if c == "{":
        stack.append([])
    elif c == "}":
        tmp = stack.pop()
        stack[-1].append(tmp)
    elif not c in (" ", "\t"):
        strbuf += c

high = 1
medium = 1
low = 1
with open("message_template.msg", "w") as f:
    for iroot, kroot in enumerate(parsed):
        if type(kroot) == str:
            f.write(kroot)
            if type(parsed[iroot + 1]) == str:
                f.write(" ")
            else:
                f.write("\n")
        
        else: # Will be type list
            f.write("\n{\n")
            f.write("\t")
            for imessage, kmessage in enumerate(kroot):
                if type(kmessage) == str:
                    f.write(kmessage)
                    if kmessage == "High":
                        f.write(" {}".format(high))
                        high += 1
                    elif kmessage == "Medium":
                        f.write(" {}".format(medium))
                        medium += 1
                    elif kmessage == "Low":
                        f.write(" {}".format(low))
                        low += 1
                    if len(kroot) > imessage + 1 and type(kroot[imessage + 1]) == str:
                        f.write(" ")
                    else:
                        f.write("\n")
                
                else: # Will be type list
                    f.write("\t")
                    f.write("{\n")
                    f.write("\t\t")
                    for iblock, kblock in enumerate(kmessage):
                        if type(kblock) == str:
                            f.write(kblock)
                            if len(kmessage) > iblock + 1 and type(kmessage[iblock + 1]) == str:
                                f.write("\t")
                            else:
                                f.write("\n")
                        else: # Will be type list
                            f.write("\t\t{")
                            f.write("\t")
                            for ientry, kentry in enumerate(kblock):
                                if type(kentry) == str:
                                    f.write(kentry)
                                    f.write("\t")
                            f.write("}\n")
                    f.write("\t}\n")
            
            f.write("}\n")