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GGUF in Python #2415

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Jul 27, 2023
Merged

GGUF in Python #2415

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57 changes: 25 additions & 32 deletions gguf.py
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Original file line number Diff line number Diff line change
Expand Up @@ -71,63 +71,56 @@ def open(cls, path: str) -> "GGUFWriter":
f = open(path, "wb")
return cls(f)

def write_key(self, key: str, value_type: GGUFValueType):
encoded_key = key.encode("utf8")
self.buffered_writer.write(struct.pack("<I", len(encoded_key)))
self.buffered_writer.write(encoded_key)
self.buffered_writer.write(struct.pack("<I", value_type))
def write_key(self, key: str):
self.write_value(key, GGUFValueType.STRING)

def write_uint8(self, key: str, value: int):
self.write_key(key, GGUFValueType.UINT8)
self.buffered_writer.write(struct.pack("<B", value))
self.write_key(key)
self.write_value(value, GGUFValueType.UINT8)

def write_int8(self, key: str, value: int):
self.write_key(key, GGUFValueType.INT8)
self.buffered_writer.write(struct.pack("<b", value))
self.write_key(key)
self.write_value(value, GGUFValueType.INT8)

def write_uint16(self, key: str, value: int):
self.write_key(key, GGUFValueType.UINT16)
self.buffered_writer.write(struct.pack("<H", value))
self.write_key(key)
self.write_value(value, GGUFValueType.UINT16)

def write_int16(self, key: str, value: int):
self.write_key(key, GGUFValueType.INT16)
self.buffered_writer.write(struct.pack("<h", value))
self.write_key(key)
self.write_value(value, GGUFValueType.INT16)

def write_uint32(self, key: str, value: int):
self.write_key(key, GGUFValueType.UINT32)
self.buffered_writer.write(struct.pack("<I", value))
self.write_key(key)
self.write(value, GGUFValueType.UINT32)

def write_int32(self, key: str, value: int):
self.write_key(key, GGUFValueType.INT32)
self.buffered_writer.write(struct.pack("<i", value))
self.write_key(key)
self.write_value(value, GGUFValueType.INT32)

def write_float32(self, key: str, value: float):
self.write_key(key, GGUFValueType.FLOAT32)
self.buffered_writer.write(struct.pack("<f", value))
self.write_key(key)
self.write_value(value, GGUFValueType.FLOAT32)

def write_bool(self, key: str, value: bool):
self.write_key(key, GGUFValueType.BOOL)
self.buffered_writer.write(struct.pack("<?", value))
self.write_key(key)
self.write_value(value, GGUFValueType.BOOL)

def write_string(self, key: str, value: str):
self.write_key(key, GGUFValueType.STRING)
encoded_string = value.encode('utf-8')
self.buffered_writer.write(struct.pack("<I", len(encoded_string)))
self.buffered_writer.write(encoded_string)
self.write_key(key)
self.write_value(value, GGUFValueType.STRING)

def write_array(self, key: str, value: list):
if not isinstance(value, list):
raise ValueError("Value must be a list for array type")

self.write_key(key, GGUFValueType.ARRAY)

self.buffered_writer.write(struct.pack("<I", len(value)))
self.write_key(key)
self.write_value(value, GGUFValueType.ARRAY)

for item in value:
self.write_value(item)
def write_value(self: str, value: Any, value_type: GGUFValueType = None):
if value_type is None:
value_type = GGUFValueType.get_type(value)

def write_value(self: str, value: Any):
value_type = GGUFValueType.get_type(value)
self.buffered_writer.write(struct.pack("<I", value_type))

if value_type == GGUFValueType.UINT8:
Expand Down