From f2a80801caa4092badb1040a3e6a61ce91494f3f Mon Sep 17 00:00:00 2001
From: "Giuseppe (LemonBoy)" <segnalazionidalweb@gmail.com>
Date: Tue, 16 Jun 2009 15:32:57 +0200
Subject: [PATCH] Added a CCF compressor/decompressor

---
 compression.py | 109 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)

diff --git a/compression.py b/compression.py
index f1fd794..669958e 100644
--- a/compression.py
+++ b/compression.py
@@ -2,12 +2,121 @@ import os, hashlib, struct, subprocess, fnmatch, shutil, urllib, array
 import wx
 import png
 
+import zlib
 from Crypto.Cipher import AES
 from Struct import Struct
 
 from common import *
 
+class CCF():
+	class CCFHeader(Struct):
+		__endian__ = Struct.LE
+		def __format__(self):
+			self.magic = Struct.string(4)
+			self.zeroes12 = Struct.string(12)
+			self.rootOffset = Struct.uint32
+			self.filesCount = Struct.uint32
+			self.zeroes8 = Struct.string(8)
+			
+	class CCFFile(Struct):
+		__endian__ = Struct.LE
+		def __format__(self):
+			self.fileName = Struct.string(20)
+			self.fileOffset = Struct.uint32
+			self.fileSize = Struct.uint32
+			self.fileSizeDecompressed = Struct.uint32
 
+	def __init__(self, fileName):
+		self.fd = open(fileName, 'r+b')
+		
+	def compress(self, folder):
+		fileList = []
+		
+		fileHdr = self.CCFHeader()
+		
+		files = os.listdir(folder)
+		
+		fileHdr.magic = "\x43\x43\x46\x00"
+		fileHdr.zeroes12 = '\x00' * 12
+		fileHdr.rootOffset = 0x20
+		fileHdr.zeroes8 = '\x00' * 8
+		
+		currentOffset = len(fileHdr)
+		packedFiles = 0
+		previousFileEndOffset = 0
+		
+		for file in files:
+			if os.path.isdir(folder + '/' + file) or file == '.DS_Store':
+				continue
+			else:
+				fileList.append(file)
+				
+		fileHdr.filesCount = len(fileList)
+		self.fd.write(fileHdr.pack())
+		self.fd.write('\x00' * (fileHdr.filesCount * len(self.CCFFile())))
+		
+		for fileNumber in range(len(fileList)):
+			
+			fileEntry = self.CCFFile()
+			
+			compressedBuffer = zlib.compress(open(folder + '/' + fileList[fileNumber]).read())
+			
+			fileEntry.fileName = fileList[fileNumber]
+			fileEntry.fileSize = len(compressedBuffer)
+			fileEntry.fileSizeDecompressed = os.stat(folder + '/' + fileList[fileNumber]).st_size
+			fileEntry.fileOffset = align(self.fd.tell(), 32) / 32
+			
+			print 'File {0} ({1}Kb) placed at offset 0x{2:X}'.format(fileEntry.fileName, fileEntry.fileSize / 1024, fileEntry.fileOffset * 32)
+	
+			self.fd.seek(len(fileHdr) + fileNumber * len(self.CCFFile()))
+			self.fd.write(fileEntry.pack())
+			self.fd.seek(fileEntry.fileOffset * 32)
+			self.fd.write(compressedBuffer)
+			
+		self.fd.close()		
+
+	def decompress(self):
+		fileHdr = self.CCFHeader()
+		hdrData = self.fd.read(len(fileHdr))
+		fileHdr.unpack(hdrData)
+		
+		print 'Found {0} file/s and root node at 0x{1:X}'.format(fileHdr.filesCount, fileHdr.rootOffset)
+		
+		if fileHdr.magic != "\x43\x43\x46\x00":
+			raise ValueError("Wrong magic, 0x{0}".format(fileHdr.magic))
+			
+		os.mkdir('/' + self.fd.name.replace(".", "_") + "_out")
+		os.chdir('/' + self.fd.name.replace(".", "_") + "_out")
+		
+		currentOffset = len(fileHdr)
+		
+		for x in range(fileHdr.filesCount):
+			self.fd.seek(currentOffset)
+			
+			fileEntry = self.CCFFile()
+			fileData = self.fd.read(len(fileEntry))
+			fileEntry.unpack(fileData)
+			
+			fileEntry.fileOffset = fileEntry.fileOffset * 32
+						
+			print 'File {0} at offset 0x{1:X}'.format(fileEntry.fileName, fileEntry.fileOffset)
+			print 'File size {0}Kb ({1}Kb decompressed)'.format(fileEntry.fileSize / 1024, fileEntry.fileSizeDecompressed / 1024)
+			
+			output = open(fileEntry.fileName.rstrip('\0'), 'w+b')
+			
+			self.fd.seek(fileEntry.fileOffset)
+			if fileEntry.fileSize == fileEntry.fileSizeDecompressed:
+				print 'The file is stored uncompressed'
+				output.write(self.fd.read(fileEntry.fileSize))
+			else:
+				print 'The file is stored compressed..decompressing'
+				decompressedBuffer = zlib.decompress(self.fd.read(fileEntry.fileSize))
+				output.write(decompressedBuffer)
+			output.close()
+			
+			currentOffset += len(fileEntry)
+		
+		
 class LZ77():
 	class WiiLZ77: #class by marcan
 		TYPE_LZ77 = 1