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Update pzztool.py
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tmpz23
GitHub
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commit
0a890b6b50
190
pzztool.py
190
pzztool.py
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@ -24,15 +24,21 @@ TPL_MAGIC_NUMBER = b"\x00\x20\xAF\x30" # http://virtualre.rf.gd/index.php/TPL_(F
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def get_file_ext(file_content: bytes):
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if file_content[0:4] == TPL_MAGIC_NUMBER:
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if file_content.startswith(TPL_MAGIC_NUMBER):
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return ".tpl"
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# Par défaut
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return ".dat"
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# Non implémenté : pour supprimer le pad à la fin des fichiers unpack
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# Les fichiers sans pad se terminent éventuellement par des b"\x00"
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# ce qui impose de connaître le format de fichier pour implémenter cette fonction
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def remove_padding(file_content: bytearray):
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return file_content
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# return file_content.rstrip(b'\x00')
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def bytes_align(bout: bytes):
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while len(bout) % CHUNK_SIZE > 0:
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bout.extend(b"\x00")
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return bout.ljust(CHUNK_SIZE * ceil(len(bout) / CHUNK_SIZE), b"\x00")
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def pzz_decompress(compressed_bytes: bytes):
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@ -40,10 +46,10 @@ def pzz_decompress(compressed_bytes: bytes):
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compressed_bytes_size = len(compressed_bytes) // 2 * 2
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cb = 0 # Control bytes
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cb_bit = -1
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cb_bit = -1 # rotations de 15 à 0 pour le flag de compression
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i = 0
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while i < compressed_bytes_size:
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if cb_bit < 0:
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if cb_bit < 0: # tous les
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cb = compressed_bytes[i + 1]
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cb |= compressed_bytes[i + 0] << 8
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cb_bit = 15
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@ -53,10 +59,10 @@ def pzz_decompress(compressed_bytes: bytes):
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compress_flag = cb & (1 << cb_bit)
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cb_bit -= 1
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# logging.debug(compress_flag)
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if compress_flag:
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c = compressed_bytes[i + 1]
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c |= compressed_bytes[i + 0] << 8
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offset = (c & 0x7FF) * 2
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if offset == 0:
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break # End of the compressed data
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@ -71,86 +77,86 @@ def pzz_decompress(compressed_bytes: bytes):
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for j in range(count):
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uncompressed_bytes.append(uncompressed_bytes[index + j])
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else:
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uncompressed_bytes.extend(compressed_bytes[i: i + 2])
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uncompressed_bytes += compressed_bytes[i: i+2]
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i += 2
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return uncompressed_bytes
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def pzz_compress(b: bytes):
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bout = bytearray()
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size_b = len(b) // 2 * 2
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def pzz_compress(uncompressed_bytes: bytes):
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compressed_bytes = bytearray(2)
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size_uncompressed_bytes = len(uncompressed_bytes) // 2 * 2
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cb = 0 # Control bytes
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cb_bit = 15
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cb_bit = 15 # rotations de 15 à 0 pour le flag de compression
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cb_pos = 0
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bout.extend(b"\x00\x00")
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i = 0
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while i < size_b:
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start = max(i - 0x7FF * 2, 0)
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while i < size_uncompressed_bytes:
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start = max(i - 4094, 0) # start = 2 si i = 4096 (0x800*2)
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count_r = 0
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max_i = -1
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tmp = b[i: i + 2]
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init_count = len(tmp)
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#######################################################
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# start : contient l'index .. (en cours de rédaction)
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#######################################################
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while True:
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start = b.find(tmp, start, i + 1)
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if start != -1 and start % 2 != 0:
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# start = index première occurence de uncompressed_bytes[i:i+2] entre start et i+1
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# on regarde maxi dans les 4094 derniers octets
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start = uncompressed_bytes.find(uncompressed_bytes[i: i+2], start, i+1)
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# si les 2 octets étudiés n'apparaissent pas dans les 4094 derniers octets
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if start == -1:
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break
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# si la première occurence n'est pas à un index multiple de 2, on l'ignore
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if start % 2 != 0:
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start += 1
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continue
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if start != -1:
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count = init_count
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while i < size_b - count \
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and count < 0xFFFF * 2 \
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and b[start + count] == b[i + count] \
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and b[start + count + 1] == b[i + count + 1]:
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count += 2
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if count_r < count:
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count_r = count
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max_i = start
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start += 2
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else:
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break
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count = 2
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while i < size_uncompressed_bytes - count and \
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count < 0xFFFF * 2 and \
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uncompressed_bytes[start+count] == uncompressed_bytes[i+count] and \
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uncompressed_bytes[start+count+1] == uncompressed_bytes[i+count+1]:
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count += 2
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if count_r < count:
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count_r = count
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max_i = start
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start += 2
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start = max_i
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#######################################################
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#
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#######################################################
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compress_flag = 0
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if count_r >= 4:
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compress_flag = 1
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offset = i - start
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offset //= 2
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offset = (i - start) // 2
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count_r //= 2
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c = offset
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if count_r <= 0x1F:
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c |= count_r << 11
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bout.append((c >> 8))
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bout.append(c & 0xFF)
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compressed_bytes += c.to_bytes(2, "big")
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else:
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bout.append((c >> 8))
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bout.append(c & 0xFF)
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bout.append((count_r >> 8))
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bout.append(count_r & 0xFF)
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compressed_bytes += c.to_bytes(2, "big") + count_r.to_bytes(2, "big")
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i += count_r * 2
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else:
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bout.extend(b[i: i + 2])
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compressed_bytes += uncompressed_bytes[i: i+2]
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i += 2
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cb |= (compress_flag << cb_bit)
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cb_bit -= 1
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if cb_bit < 0:
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bout[cb_pos + 1] = cb & 0xFF
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bout[cb_pos + 0] = cb >> 8
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cb = 0x0000
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compressed_bytes[cb_pos:cb_pos + 2] = cb.to_bytes(2, "big")
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cb = 0
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cb_bit = 15
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cb_pos = len(bout)
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bout.extend(b"\x00\x00")
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cb_pos = len(compressed_bytes)
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compressed_bytes += b"\x00\x00"
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cb |= (1 << cb_bit)
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bout[cb_pos + 1] = cb & 0xFF
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bout[cb_pos + 0] = cb >> 8
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bout.extend(b"\x00\x00")
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compressed_bytes[cb_pos:cb_pos + 2] = cb.to_bytes(2, "big")
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compressed_bytes += b"\x00\x00"
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bytes_align(bout)
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return bout
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return bytes_align(compressed_bytes)
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def pzz_unpack(pzz_path: Path, dest_folder: Path, auto_decompress: bool = False):
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@ -168,7 +174,7 @@ def pzz_unpack(pzz_path: Path, dest_folder: Path, auto_decompress: bool = False)
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logging.info(f" unpacking {pzz_path} in folder {unpacked_pzz_path}")
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unpacked_pzz_path.mkdir(exist_ok=True)
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with open(pzz_path, "rb") as pzz_file:
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with pzz_path.open("rb") as pzz_file:
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# file_count reçoit le nombre de fichiers présent dans le PZZ :
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# On lit les 4 premiers octets (uint32 big-endian)
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file_count, = unpack(">I", pzz_file.read(4))
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@ -216,6 +222,8 @@ def pzz_unpack(pzz_path: Path, dest_folder: Path, auto_decompress: bool = False)
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else:
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file_content = pzz_file.read(file_len)
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file_content = remove_padding(bytearray(file_content))
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if not auto_decompress and compression_status != 'U':
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file_path = file_path.with_suffix(".pzzp")
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else:
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@ -237,59 +245,53 @@ def pzz_pack(src_path: Path, dest_file: Path, auto_compress: bool = False):
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# On récupère les fichiers du dossier à compresser
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src_files = listdir(src_path)
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# On récupère le nombre total de fichiers
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file_count = len(src_files)
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if auto_compress:
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logging.info(f" pzz({src_path}) in pzz {dest_file}")
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else:
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logging.info(f" packing {src_path} in pzz {dest_file}")
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logging.debug(f" -> {file_count} files to pack")
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logging.debug(f" -> {len(src_files)} files to pack")
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with dest_file.open("wb") as pzz_file:
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# On écrit file_count au début de header
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pzz_file.write(file_count.to_bytes(4, byteorder='big'))
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# On se place à la fin du header PZZ
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pzz_file.seek(CHUNK_SIZE)
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file_descriptors = []
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# On récupère le nombre total de fichiers pour le mettre au début du header
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header_bytes = len(src_files).to_bytes(4, byteorder='big')
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# On écrit tous les fichiers à la suite du header
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for src_file_name in src_files:
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is_compressed = Path(src_file_name).suffix == ".pzzp"
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compression_status = src_file_name[3:4]
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with (src_path / src_file_name).open("rb") as src_file:
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src_file = src_file.read()
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src_file = (src_path / src_file_name).read_bytes()
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# Le fichier doit être compressé avant d'être pack
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if compression_status == 'C' and not is_compressed and auto_compress:
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src_file = pzz_compress(src_file)
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# Le fichier doit être décompressé avant d'être pack
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elif compression_status == 'U' and is_compressed and auto_compress:
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src_file = pzz_decompress(src_file) # padding à gérer
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# Le fichier doit être compressé avant d'être pack
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if compression_status == 'C' and not is_compressed and auto_compress:
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src_file = pzz_compress(src_file)
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# Le fichier doit être décompressé avant d'être pack
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elif compression_status == 'U' and is_compressed and auto_compress:
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src_file = pzz_decompress(src_file) # padding à gérer
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# on ajoute le padding pour correspondre à un multiple de CHUNK_SIZE
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if compression_status == 'U':
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if (len(src_file) % CHUNK_SIZE) > 0:
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src_file.extend(b"\x00" * (CHUNK_SIZE - (len(src_file) % CHUNK_SIZE)))
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"""
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# on ajoute le padding pour correspondre à un multiple de CHUNK_SIZE
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if compression_status == 'U':
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if (len(src_file) % CHUNK_SIZE) > 0:
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src_file.extend(b"\x00" * (CHUNK_SIZE - (len(src_file) % CHUNK_SIZE)))
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"""
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# file_descriptor = arrondi supérieur de la taille / CHUNK_SIZE
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file_descriptor = ceil(len(src_file) / CHUNK_SIZE)
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# file_descriptor = arrondi supérieur de la taille / CHUNK_SIZE
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file_descriptor = ceil(len(src_file) / CHUNK_SIZE)
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# On ajoute le flag de compression au file_descriptor
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if compression_status == 'C':
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file_descriptor |= BIT_COMPRESSION_FLAG
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# On ajoute le flag de compression au file_descriptor
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if compression_status == 'C':
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file_descriptor |= BIT_COMPRESSION_FLAG
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file_descriptors.append(file_descriptor)
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pzz_file.write(src_file)
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header_bytes += file_descriptor.to_bytes(4, byteorder='big')
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pzz_file.write(src_file)
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pzz_file.seek(4)
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# On écrit les file_descriptor dans le header du PZZ pour chaque fichier
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tmp = bytearray()
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for file_descriptor in file_descriptors:
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tmp.extend(file_descriptor.to_bytes(4, byteorder='big'))
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pzz_file.write(tmp)
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pzz_file.seek(0)
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# On écrit le header
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pzz_file.write(header_bytes)
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def unpzz(src_path: Path, dest_file: Path):
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@ -303,10 +305,10 @@ def pzz(src_path: Path, dest_file: Path):
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def get_argparser():
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import argparse
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parser = argparse.ArgumentParser(description='PZZ (de)compressor & unpacker - [GameCube] Gotcha Force v' + __version__)
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parser.add_argument('--version', action='version', version='%(prog)s ' + __version__)
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parser.add_argument('--version', action='version', version='%(prog)s ' + __version__)
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parser.add_argument('-v', '--verbose', action='store_true', help='verbose mode')
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parser.add_argument('-di', '--disable-ignore', action='store_true', help="Disable .pzzp or .pzz file extension verification.")
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parser.add_argument('input_path', metavar='INPUT', help='')
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parser.add_argument('-di', '--disable-ignore', action='store_true', help="Disable .pzzp or .pzz file extension verification.")
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parser.add_argument('input_path', metavar='INPUT', help='')
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parser.add_argument('output_path', metavar='OUTPUT', help='', nargs='?', default="")
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group = parser.add_mutually_exclusive_group(required=True)
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@ -369,10 +371,8 @@ if __name__ == '__main__':
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logging.warning(f"Ignored - {filename} - bad extension - musn't be a pzzp")
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shutil.copy(p_input / filename, p_output / filename)
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continue
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logging.info(f"Compressing {filename}")
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with open(p_input / filename, 'rb') as uncompressed, open(p_output / (Path(filename).stem + ".pzzp"), 'wb') as recompressed:
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recompressed.write(pzz_compress(uncompressed.read()))
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(p_output / (Path(filename).stem + ".pzzp")).write_bytes(pzz_compress((p_input / filename).read_bytes()))
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elif args.batch_decompress:
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logging.info("### Batch Decompress")
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p_output.mkdir(exist_ok=True)
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@ -382,12 +382,10 @@ if __name__ == '__main__':
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logging.warning(f"Ignored - {filename} - bad extension - must be a pzzp")
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shutil.copy(p_input / filename, p_output / filename)
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continue
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logging.info(f"Decompressing {filename}")
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with open(p_input / filename, 'rb') as compressed:
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uncompressed_content = pzz_decompress(compressed.read())
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with open(p_output / Path(filename).with_suffix(get_file_ext(uncompressed_content)), 'wb') as uncompressed :
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uncompressed.write(uncompressed_content)
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uncompressed_content = pzz_decompress((p_input / filename).read_bytes())
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uncompressed_path = p_output / Path(filename).with_suffix(get_file_ext(uncompressed_content))
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uncompressed_path.write_bytes(uncompressed_content)
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elif args.pack:
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logging.info("### Pack")
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pzz_pack(p_input, p_output)
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