mirror of
https://github.com/ggerganov/llama.cpp.git
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243 lines
10 KiB
Python
Executable File
243 lines
10 KiB
Python
Executable File
#!/usr/bin/env python3
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import logging
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import argparse
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import os
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import sys
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import json
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from pathlib import Path
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import numpy as np
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from tqdm import tqdm
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from typing import Any, Sequence, NamedTuple
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# Necessary to load the local gguf package
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if "NO_LOCAL_GGUF" not in os.environ and (Path(__file__).parent.parent.parent / 'gguf-py').exists():
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sys.path.insert(0, str(Path(__file__).parent.parent))
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import gguf
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logger = logging.getLogger("gguf-new-metadata")
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class MetadataDetails(NamedTuple):
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type: gguf.GGUFValueType
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value: Any
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description: str = ''
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def get_byteorder(reader: gguf.GGUFReader) -> gguf.GGUFEndian:
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if np.uint32(1) == np.uint32(1).newbyteorder("<"):
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# Host is little endian
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host_endian = gguf.GGUFEndian.LITTLE
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swapped_endian = gguf.GGUFEndian.BIG
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else:
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# Sorry PDP or other weird systems that don't use BE or LE.
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host_endian = gguf.GGUFEndian.BIG
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swapped_endian = gguf.GGUFEndian.LITTLE
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if reader.byte_order == "S":
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return swapped_endian
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else:
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return host_endian
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def decode_field(field: gguf.ReaderField | None) -> Any:
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if field and field.types:
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main_type = field.types[0]
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if main_type == gguf.GGUFValueType.ARRAY:
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sub_type = field.types[-1]
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if sub_type == gguf.GGUFValueType.STRING:
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return [str(bytes(field.parts[idx]), encoding='utf-8') for idx in field.data]
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else:
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return [pv for idx in field.data for pv in field.parts[idx].tolist()]
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if main_type == gguf.GGUFValueType.STRING:
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return str(bytes(field.parts[-1]), encoding='utf-8')
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else:
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return field.parts[-1][0]
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return None
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def get_field_data(reader: gguf.GGUFReader, key: str) -> Any:
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field = reader.get_field(key)
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return decode_field(field)
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def find_token(token_list: Sequence[int], token: str) -> Sequence[int]:
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token_ids = [index for index, value in enumerate(token_list) if value == token]
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if len(token_ids) == 0:
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raise LookupError(f'Unable to find "{token}" in token list!')
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return token_ids
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def copy_with_new_metadata(reader: gguf.GGUFReader, writer: gguf.GGUFWriter, new_metadata: dict[str, MetadataDetails], remove_metadata: Sequence[str]) -> None:
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for field in reader.fields.values():
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# Suppress virtual fields and fields written by GGUFWriter
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if field.name == gguf.Keys.General.ARCHITECTURE or field.name.startswith('GGUF.'):
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logger.debug(f'Suppressing {field.name}')
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continue
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# Skip old chat templates if we have new ones
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if field.name.startswith(gguf.Keys.Tokenizer.CHAT_TEMPLATE) and gguf.Keys.Tokenizer.CHAT_TEMPLATE in new_metadata:
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logger.debug(f'Skipping {field.name}')
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continue
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if field.name in remove_metadata:
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logger.debug(f'Removing {field.name}')
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continue
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old_val = MetadataDetails(field.types[0], decode_field(field))
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val = new_metadata.get(field.name, old_val)
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if field.name in new_metadata:
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logger.debug(f'Modifying {field.name}: "{old_val.value}" -> "{val.value}" {val.description}')
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del new_metadata[field.name]
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elif val.value is not None:
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logger.debug(f'Copying {field.name}')
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if val.value is not None:
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writer.add_key_value(field.name, val.value, val.type)
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if gguf.Keys.Tokenizer.CHAT_TEMPLATE in new_metadata:
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logger.debug('Adding chat template(s)')
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writer.add_chat_template(new_metadata[gguf.Keys.Tokenizer.CHAT_TEMPLATE].value)
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del new_metadata[gguf.Keys.Tokenizer.CHAT_TEMPLATE]
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for key, val in new_metadata.items():
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logger.debug(f'Adding {key}: "{val.value}" {val.description}')
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writer.add_key_value(key, val.value, val.type)
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total_bytes = 0
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for tensor in reader.tensors:
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total_bytes += tensor.n_bytes
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writer.add_tensor_info(tensor.name, tensor.data.shape, tensor.data.dtype, tensor.data.nbytes, tensor.tensor_type)
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bar = tqdm(desc="Writing", total=total_bytes, unit="byte", unit_scale=True)
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writer.write_header_to_file()
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writer.write_kv_data_to_file()
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writer.write_ti_data_to_file()
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for tensor in reader.tensors:
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writer.write_tensor_data(tensor.data)
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bar.update(tensor.n_bytes)
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writer.close()
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def main() -> None:
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tokenizer_metadata = (getattr(gguf.Keys.Tokenizer, n) for n in gguf.Keys.Tokenizer.__dict__.keys() if not n.startswith('_'))
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token_names = dict((n.split('.')[-1][:-len('_token_id')], n) for n in tokenizer_metadata if n.endswith('_token_id'))
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parser = argparse.ArgumentParser(description="Make a copy of a GGUF file with new metadata")
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parser.add_argument("input", type=Path, help="GGUF format model input filename")
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parser.add_argument("output", type=Path, help="GGUF format model output filename")
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parser.add_argument("--general-name", type=str, help="The models general.name", metavar='"name"')
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parser.add_argument("--general-description", type=str, help="The models general.description", metavar='"Description ..."')
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parser.add_argument("--chat-template", type=str, help="Chat template string (or JSON string containing templates)", metavar='"{% ... %} ..."')
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parser.add_argument("--chat-template-config", type=Path, help="Config file containing chat template(s)", metavar='tokenizer_config.json')
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parser.add_argument("--pre-tokenizer", type=str, help="The models tokenizer.ggml.pre", metavar='"pre tokenizer"')
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parser.add_argument("--remove-metadata", action="append", type=str, help="Remove metadata (by key name) from output model", metavar='general.url')
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parser.add_argument("--special-token", action="append", type=str, help="Special token by value", nargs=2, metavar=(' | '.join(token_names.keys()), '"<token>"'))
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parser.add_argument("--special-token-by-id", action="append", type=str, help="Special token by id", nargs=2, metavar=(' | '.join(token_names.keys()), '0'))
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parser.add_argument("--force", action="store_true", help="Bypass warnings without confirmation")
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parser.add_argument("--verbose", action="store_true", help="Increase output verbosity")
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args = parser.parse_args(None if len(sys.argv) > 2 else ["--help"])
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logging.basicConfig(level=logging.DEBUG if args.verbose else logging.INFO)
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new_metadata = {}
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remove_metadata = args.remove_metadata or []
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if args.general_name:
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new_metadata[gguf.Keys.General.NAME] = MetadataDetails(gguf.GGUFValueType.STRING, args.general_name)
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if args.general_description:
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new_metadata[gguf.Keys.General.DESCRIPTION] = MetadataDetails(gguf.GGUFValueType.STRING, args.general_description)
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if args.chat_template:
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new_metadata[gguf.Keys.Tokenizer.CHAT_TEMPLATE] = MetadataDetails(gguf.GGUFValueType.STRING, json.loads(args.chat_template) if args.chat_template.startswith('[') else args.chat_template)
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if args.chat_template_config:
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with open(args.chat_template_config, 'r') as fp:
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config = json.load(fp)
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template = config.get('chat_template')
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if template:
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new_metadata[gguf.Keys.Tokenizer.CHAT_TEMPLATE] = MetadataDetails(gguf.GGUFValueType.STRING, template)
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if args.pre_tokenizer:
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new_metadata[gguf.Keys.Tokenizer.PRE] = MetadataDetails(gguf.GGUFValueType.STRING, args.pre_tokenizer)
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if remove_metadata:
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logger.warning('*** Warning *** Warning *** Warning **')
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logger.warning('* Most metadata is required for a fully functional GGUF file,')
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logger.warning('* removing crucial metadata may result in a corrupt output file!')
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if not args.force:
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logger.warning('* Enter exactly YES if you are positive you want to proceed:')
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response = input('YES, I am sure> ')
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if response != 'YES':
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logger.info("You didn't enter YES. Okay then, see ya!")
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sys.exit(0)
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logger.info(f'* Loading: {args.input}')
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reader = gguf.GGUFReader(args.input, 'r')
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arch = get_field_data(reader, gguf.Keys.General.ARCHITECTURE)
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endianess = get_byteorder(reader)
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token_list = get_field_data(reader, gguf.Keys.Tokenizer.LIST) or []
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for name, token in args.special_token or []:
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if name not in token_names:
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logger.warning(f'Unknown special token "{name}", ignoring...')
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else:
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ids = find_token(token_list, token)
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new_metadata[token_names[name]] = MetadataDetails(gguf.GGUFValueType.UINT32, ids[0], f'= {token}')
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if len(ids) > 1:
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logger.warning(f'Multiple "{token}" tokens found, choosing ID {ids[0]}, use --special-token-by-id if you want another:')
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logger.warning(', '.join(str(i) for i in ids))
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for name, id_string in args.special_token_by_id or []:
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if name not in token_names:
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logger.warning(f'Unknown special token "{name}", ignoring...')
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elif not id_string.isdecimal():
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raise LookupError(f'Token ID "{id_string}" is not a valid ID!')
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else:
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id_int = int(id_string)
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if id_int >= 0 and id_int < len(token_list):
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new_metadata[token_names[name]] = MetadataDetails(gguf.GGUFValueType.UINT32, id_int, f'= {token_list[id_int]}')
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else:
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raise LookupError(f'Token ID {id_int} is not within token list!')
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if os.path.isfile(args.output) and not args.force:
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logger.warning('*** Warning *** Warning *** Warning **')
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logger.warning(f'* The "{args.output}" GGUF file already exists, it will be overwritten!')
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logger.warning('* Enter exactly YES if you are positive you want to proceed:')
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response = input('YES, I am sure> ')
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if response != 'YES':
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logger.info("You didn't enter YES. Okay then, see ya!")
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sys.exit(0)
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logger.info(f'* Writing: {args.output}')
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writer = gguf.GGUFWriter(args.output, arch=arch, endianess=endianess)
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alignment = get_field_data(reader, gguf.Keys.General.ALIGNMENT)
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if alignment is not None:
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logger.debug(f'Setting custom alignment: {alignment}')
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writer.data_alignment = alignment
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copy_with_new_metadata(reader, writer, new_metadata, remove_metadata)
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if __name__ == '__main__':
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main()
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