Created
August 23, 2022 00:51
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Extract Compressed Data from Monster Hunter G (Wii) fpk files
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| from struct import unpack | |
| from os import makedirs | |
| from os.path import exists | |
| sortme = [] #I don't trust that this is sorted | |
| with open("0000.fpk", "rb") as f: | |
| #read header, make sure it's valid | |
| unknown, entry_count, header_size, total_size = unpack(">4I", f.read(0x10)) | |
| f.seek(0, 2) | |
| assert total_size == f.tell() | |
| f.seek(0x10) | |
| assert header_size == 0x10 | |
| #read each entry for processing in a moment | |
| for i in range(entry_count): | |
| filepath, offset, cmpsize, decsize = unpack(">36s3I", f.read(0x30)) | |
| filepath = filepath.rstrip(b"\0") | |
| if len(filepath) == 31: | |
| print("%s possibly truncated" % filepath) | |
| sortme.append((filepath, offset, cmpsize, decsize)) | |
| sortme.sort(key=lambda x: x[1]) #sort by offset | |
| for entry in sortme: | |
| (filepath, offset, cmpsize, decsize) = entry | |
| f.seek(offset) | |
| #put everything in output/ | |
| path = b"output/" + b"/".join(filepath.split(b"/")[:-1]) | |
| if not exists(path): #create path if it doesn't exist | |
| makedirs(path) | |
| with open(b"output/%s" % filepath, "wb") as o: | |
| o.write(f.read(cmpsize)) | |
| print(b"%s done" % filepath) |
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