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[models] Enable JSON to binary manifest serialization

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derrod 2020-06-01 11:20:26 +02:00
parent 2e05976f97
commit 5f2da28f51
2 changed files with 18 additions and 13 deletions
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7
legendary/models/json_manifest.py
View file

@ -73,7 +73,12 @@ class JSONManifest(Manifest):
return _manifest
def write(self, *args, **kwargs):
raise NotImplementedError('Serializing JSON manifests is not supported')
# The version here only matters for the manifest header,
# the feature level in meta determines chunk folders etc.
# So all that's required for successful serialization is
# setting it to something high enough to be a binary manifest
self.version = 18
return super().write(*args, **kwargs)
class JSONManifestMeta(ManifestMeta):

24
legendary/models/manifest.py
View file

@ -68,7 +68,7 @@ class Manifest:
self.size_uncompressed = 0
self.sha_hash = ''
self.stored_as = 0
self.version = 17
self.version = 18
self.data = b''
# remainder
@ -87,7 +87,7 @@ class Manifest:
_tmp = BytesIO(_m.data)
_m.meta = ManifestMeta.read(_tmp)
_m.chunk_data_list = CDL.read(_tmp, _m.version)
_m.chunk_data_list = CDL.read(_tmp, _m.meta.feature_level)
_m.file_manifest_list = FML.read(_tmp)
_m.custom_fields = CustomFields.read(_tmp)
@ -175,7 +175,7 @@ class ManifestMeta:
def __init__(self):
self.meta_size = 0
self.data_version = 0
self.feature_level = 17
self.feature_level = 18
self.is_file_data = False
self.app_id = 0
self.app_name = ''
@ -208,11 +208,14 @@ class ManifestMeta:
_meta = cls()
_meta.meta_size = struct.unpack('<I', bio.read(4))[0]
_meta.data_version = struct.unpack('B', bio.read(1))[0] # always 0?
_meta.feature_level = struct.unpack('<I', bio.read(4))[0] # same as manifest version
_meta.data_version = struct.unpack('B', bio.read(1))[0]
# Usually same as manifest version, but can be different
# e.g. if JSON manifest has been converted to binary manifest.
_meta.feature_level = struct.unpack('<I', bio.read(4))[0]
# As far as I can tell this was used for very old manifests that didn't use chunks at all
_meta.is_file_data = struct.unpack('B', bio.read(1))[0] == 1
_meta.app_id = struct.unpack('<I', bio.read(4))[0] # always 0?
# 0 for most apps, generally not used
_meta.app_id = struct.unpack('<I', bio.read(4))[0]
_meta.app_name = read_fstring(bio)
_meta.build_version = read_fstring(bio)
_meta.launch_exe = read_fstring(bio)
@ -234,9 +237,6 @@ class ManifestMeta:
if bio.tell() != _meta.meta_size:
raise ValueError('Did not read entire meta!')
# seek to end if not already
# bio.seek(0 + _meta.meta_size)
return _meta
def write(self, bio):
@ -275,7 +275,7 @@ class CDL:
self.size = 0
self.count = 0
self.elements = []
self._manifest_version = 17
self._manifest_version = 18
self._guid_map = None
self._guid_int_map = None
self._path_map = None
@ -328,7 +328,7 @@ class CDL:
return self.elements[index]
@classmethod
def read(cls, bio, manifest_version=17):
def read(cls, bio, manifest_version=18):
cdl_start = bio.tell()
_cdl = cls()
_cdl._manifest_version = manifest_version
@ -397,7 +397,7 @@ class CDL:
class ChunkInfo:
def __init__(self, manifest_version=17):
def __init__(self, manifest_version=18):
self.guid = None
self.hash = 0
self.sha_hash = b''