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bbcpex_script_parser.py
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import os, struct, json, pac,astor
from ast import *
from collections import defaultdict, OrderedDict
commandCounts = defaultdict(int)
commandCalls = defaultdict(list)
MODE = "<"
GAME = "bb"
PYOUT = ""
uponLookup = {
0:"IMMEDIATE",
1:"STATE_END",
2:"LANDING",
10:"ON_HIT_OR_BLOCK"
}
slotLookup = {
8: "XVelocity",
9: "YVelocity",
15: "XPos",
16: "YPos",
18: "XDistanceFromCenterOfStage",
19: "YDistanceFromFloor",
21: "XDistanceFromFowardCorner",
22: "XDistanceFromBackCorner",
27: "CharSpecificCounter",
32: "Airborne",
33: "Grounded",
34: "CharacterFacingDirection",
35: "InputsFacingDirection",
36: "XDistanceToEnemy",
37: "YDistanceToEnemy",
71: "CurrentHealth",
72: "MaxHealth",
74: "Meter",
75: "CurrentMeter",
92: "DistanceToEnemy",
106: "OverdriveTimer",
107: "OverdriveLength",
47: "IsInOverdrive",
54: "IsInOverdrive2",
91: "IsPlayer2",
112:"IsUnlimitedCharacter"
}
def getUponName(cmdData):
if cmdData in uponLookup:
return uponLookup[cmdData]
return str(cmdData)
def getSlotName(cmdData):
if cmdData in slotLookup:
return slotLookup[cmdData]
return str(cmdData)
def sanitizer(command):
def sanitize(s):
if isinstance(s,str):
s = "'{0}'".format(s.strip("\x00"))
elif command and "hex" in commandDB[str(command)]:
s = hex(s)
return str(s).strip("\x00")
return sanitize
def pysanitizer(command):
def sanitize(s):
if isinstance(s,str):
s = "{0}".format(s.strip("\x00"))
elif command and "hex" in commandDB[str(command)]:
s = hex(s)
return str(s).strip("\x00")
return sanitize
def parse_bbscript_routine(f,end = -1):
global MODE,charName,j,astRoot
currentCMD = -1
currentIndicator = "_PRE"
currentFrame = 1
currentIndent = 0
astStack = [astRoot.body]
while f.tell() != end:
loc = f.tell()
currentCMD, = struct.unpack(MODE+"I",f.read(4))
if currentCMD in [1,5,9,16,55,57,14002]:
currentIndent -= 1
indent = " "*4*currentIndent
commandCounts[currentCMD] += 1
dbData = commandDB[str(currentCMD)]
if "name" not in dbData:
dbData["name"] = "Unknown{0}".format(currentCMD)
if "format" not in commandDB[str(currentCMD)]:
cmdData = [f.read(commandDB[str(currentCMD)]["size"]-4).encode("hex")]
else:
cmdData = list(struct.unpack(MODE+dbData["format"],f.read(struct.calcsize(dbData["format"]))))
#commandCalls[currentCMD].append((characters[charName],currentIndicator,currentFrame,"{0}({1})".format(dbData["name"],",".join(map(sanitizer(currentCMD),cmdData)))))
if currentCMD == 0:
currentIndicator = cmdData[0].strip("\x00")
currentContainer = []
j["Functions"].append({'type':'state','name':cmdData[0].strip("\x00"),'commands':currentContainer})
elif dbData["name"] == "startSubroutine":
currentIndicator = cmdData[0].strip("\x00")
currentContainer = []
j["Functions"].append({'type':'subroutine','name':cmdData[0].strip("\x00"),'commands':currentContainer})
elif dbData["name"] in ["endFunction","endSubroutine"]:
pass
else:
currentContainer.append({'id':currentCMD,'params':map(pysanitizer(currentCMD),cmdData)})
comment = None
#AST STUFF
if GAME != "bb":
pass
elif currentCMD == 0:
astStack[-1].append(FunctionDef(cmdData[0].strip("\x00"),arguments([],None,None,[]),[],[Name(id="State")]))
astStack.append(astStack[-1][-1].body)
elif currentCMD == 8:
astStack[-1].append(FunctionDef(cmdData[0].strip("\x00"),arguments([],None,None,[]),[],[Name(id="Subroutine")]))
astStack.append(astStack[-1][-1].body)
elif currentCMD == 15:
astStack[-1].append(FunctionDef(dbData['name']+"_"+getUponName(cmdData[0]),arguments([],None,None,[]),[],[]))
astStack.append(astStack[-1][-1].body)
elif currentCMD == 4 and cmdData[1] == 0:
if len(astStack[-1]) > 0:
tmp = astStack[-1].pop()
else:
tmp = Str("CF_ERROR")
if not hasattr(tmp,"value"):
tmp = Expr(tmp)
astStack[-1].append(If(tmp.value,[],[]))
astStack.append(astStack[-1][-1].body)
elif currentCMD == 4:
tmp = Name(id="SLOT_"+getSlotName(cmdData[1]))
astStack[-1].append(If(tmp,[],[]))
astStack.append(astStack[-1][-1].body)
elif currentCMD == 18 and cmdData[1] == 0:
tmp = astStack[-1].pop()
if not hasattr(tmp,"value"):
tmp = Expr(tmp)
astStack[-1].append(If(tmp.value,[],[]))
astStack[-1][-1].body = [Expr(Call(Name(id="_gotolabel"),[cmdData[0]],[],None,None))]
elif currentCMD == 18:
tmp = Name(id="SLOT_"+getSlotName(cmdData[2]))
astStack[-1].append(If(tmp,[],[]))
astStack[-1][-1].body = [Expr(Call(Name(id="_gotolabel"),[cmdData[0]],[],None,None))]
elif currentCMD == 40 and cmdData[0] in [9,10,11,12,13]:
if(cmdData[1] == 2):
lval = Name(id="SLOT_"+str(cmdData[2]))
else:
lval = Num(cmdData[2])
if(cmdData[3] == 2):
rval = Name(id="SLOT_"+str(cmdData[4]))
else:
rval = Num(cmdData[4])
if cmdData[0] == 9:
op = Eq()
if cmdData[0] == 10:
op = Gt()
if cmdData[0] == 11:
op = Lt()
if cmdData[0] == 12:
op = GtE()
if cmdData[0] == 13:
op = LtE()
tmp = Expr(Compare(lval,[op],[rval]))
astStack[-1].append(tmp)
elif currentCMD == 41:
if(cmdData[0] == 2):
lval = Name(id="SLOT_"+str(cmdData[1]))
else:
lval = Num(cmdData[1])
if(cmdData[2] == 2):
rval = Name(id="SLOT_"+str(cmdData[3]))
else:
rval = Num(cmdData[3])
tmp = Assign([lval],rval)
astStack[-1].append(tmp)
elif currentCMD == 49 and cmdData[0] in [0,1,2,3]:
if(cmdData[1] == 2):
lval = Name(id="SLOT_"+str(cmdData[2]))
else:
lval = Num(cmdData[2])
if(cmdData[3] == 2):
rval = Name(id="SLOT_"+str(cmdData[4]))
else:
rval = Num(cmdData[4])
if cmdData[0] == 0:
op = Add()
if cmdData[0] == 1:
op = Sub()
if cmdData[0] == 2:
op = Mult()
if cmdData[0] == 3:
op = Div()
tmp = Assign([lval],BinOp(lval,op,rval))
astStack[-1].append(tmp)
elif currentCMD == 54 and cmdData[1] == 0:
tmp = astStack[-1].pop()
if not hasattr(tmp,"value"):
tmp = Expr(tmp)
astStack[-1].append(If(UnaryOp(Not(),tmp.value),[],[]))
astStack.append(astStack[-1][-1].body)
elif currentCMD == 54:
tmp = Name(id="SLOT_"+getSlotName(cmdData[1]))
astStack[-1].append(If(UnaryOp(Not(),tmp),[],[]))
astStack.append(astStack[-1][-1].body)
elif currentCMD == 56:
ifnode = astStack[-1][-1]
astStack.append(ifnode.orelse)
elif currentCMD in [1,5,9,16,55,57]:
if len(astStack[-1]) == 0:
astStack[-1].append(Pass())
if len(astStack) > 1:
astStack.pop()
if len(astStack) == 1:
lastFunc = j["Functions"][-1]
j["FunctionsPy"].append({"type":lastFunc["type"],"name":lastFunc["name"],"src":astor.to_source(astStack[-1][-1])})
else:
print "\tasterror",currentIndicator
#astStack[-1].append(Expr(Call(Name(id=dbData["name"]),map(sanitizer(currentCMD),cmdData),[],None,None)))
else:
astStack[-1].append(Expr(Call(Name(id=dbData["name"]),map(sanitizer(currentCMD),cmdData),[],None,None)))
if GAME == "bb":
if currentCMD == 2:
#comment = "Frame {0}->{1}".format(currentFrame,currentFrame+cmdData[1])
currentFrame = currentFrame+cmdData[1]
if currentCMD in [15,29]:
param = 0
if currentCMD == 29:
param = 1
if cmdData[0] == 0:
comment = "immediate"
if cmdData[0] == 1:
comment = "move end"
if cmdData[0] == 2:
comment = "landing"
if cmdData[0] == 10:
comment = "on hit or block"
if currentCMD == 4:
if cmdData[1] == 47:
comment = "Overdrive"
if cmdData[1] == 91:
comment = "IsPlayer2"
if cmdData[1] == 112:
comment = "IsUnlimitedCharacter"
if currentCMD == 14012:
if cmdData[0] == 0x4:
comment = "A_BUTTON"
if cmdData[0] == 0xD:
comment = "B_BUTTON"
if cmdData[0] == 0x16:
comment = "C_BUTTON"
if cmdData[0] == 0x1F:
comment = "D_BUTTON"
if cmdData[0] == 0xAC:
comment = "236"
if cmdData[0] == 0xAD:
comment = "623"
if cmdData[0] == 0xAE:
comment = "214"
if cmdData[0] == 0xAF:
comment = "41236"
if cmdData[0] == 0xB0:
comment = "421"
if cmdData[0] == 0xB1:
comment = "63214"
if cmdData[0] == 0xB2:
comment = "236236"
if cmdData[0] == 0xB3:
comment = "214214"
if cmdData[0] == 0xBA:
comment = "22"
if cmdData[0] == 0xF8:
comment = "632146"
if comment:
currentContainer[-1]['comment'] = comment
if currentCMD in [0,4,8,15,54,56,14001]:
currentIndent += 1
def parse_bbscript(f,basename,filename,filesize):
global commandDB,astRoot,charName,j,MODE
BASE = f.tell()
astRoot = Module(body=[])
j = OrderedDict()
j["Functions"] = []
j["FunctionsPy"] = []
charName = filename[-6:-4]
FUNCTION_COUNT, = struct.unpack(MODE+"I",f.read(4))
f.seek(BASE+4+0x20)
initEnd, = struct.unpack(MODE+"I",f.read(4))
initEnd = BASE + initEnd+4+0x24*FUNCTION_COUNT
initEnd = BASE+filesize
f.seek(BASE+4+0x24*(FUNCTION_COUNT))
parse_bbscript_routine(f,initEnd)
'''
for i in range(0,FUNCTION_COUNT):
f.seek(BASE+4+0x24*i)
FUNCTION_NAME = f.read(0x20).split("\x00")[0]
if log: log.write("\n#---------------{0} {1}/{2}\n".format(FUNCTION_NAME,i,FUNCTION_COUNT))
FUNCTION_OFFSET, = struct.unpack(MODE+"I",f.read(4))
f.seek(BASE+4+0x24*FUNCTION_COUNT+FUNCTION_OFFSET)
parse_bbscript_routine(f)
'''
py = open("db/"+PYOUT+"/"+filename+".py","w")
py.write(astor.to_source(astRoot))
py.close()
return filename,j