add gguf_add_file.py

gguf-py/scripts/gguf_add_file.py

@@ -0,0 +1,176 @@
+#!/usr/bin/env python3
+# gguf_add_file.py srcfile dstfile addfiles ...
+
+from __future__ import annotations
+
+import logging
+import argparse
+import os
+import sys
+from pathlib import Path
+from typing import Any
+
+import numpy as np
+
+# Necessary to load the local gguf package
+if "NO_LOCAL_GGUF" not in os.environ and (Path(__file__).parent.parent.parent / 'gguf-py').exists():
+    sys.path.insert(0, str(Path(__file__).parent.parent))
+
+from gguf import GGUFReader, GGUFWriter, ReaderField, GGMLQuantizationType, GGUFEndian, GGUFValueType, Keys  # noqa: E402
+
+logger = logging.getLogger("gguf_add_file")
+
+
+def get_file_host_endian(reader: GGUFReader) -> tuple[str, str]:
+    host_endian = 'LITTLE' if np.uint32(1) == np.uint32(1).newbyteorder("<") else 'BIG'
+    if reader.byte_order == 'S':
+        file_endian = 'BIG' if host_endian == 'LITTLE' else 'LITTLE'
+    else:
+        file_endian = host_endian
+    return (host_endian, file_endian)
+
+
+def get_byteorder(reader: GGUFReader) -> GGUFEndian:
+    if np.uint32(1) == np.uint32(1).newbyteorder("<"):
+        # Host is little endian
+        host_endian = GGUFEndian.LITTLE
+        swapped_endian = GGUFEndian.BIG
+    else:
+        # Sorry PDP or other weird systems that don't use BE or LE.
+        host_endian = GGUFEndian.BIG
+        swapped_endian = GGUFEndian.LITTLE
+
+    if reader.byte_order == "S":
+        return swapped_endian
+    else:
+        return host_endian
+
+
+def decode_field(field: ReaderField) -> Any:
+    if field and field.types:
+        main_type = field.types[0]
+
+        if main_type == GGUFValueType.ARRAY:
+            sub_type = field.types[-1]
+
+            if sub_type == GGUFValueType.STRING:
+                return [str(bytes(field.parts[idx]), encoding='utf8') for idx in field.data]
+            else:
+                return [pv for idx in field.data for pv in field.parts[idx].tolist()]
+        if main_type == GGUFValueType.STRING:
+            return str(bytes(field.parts[-1]), encoding='utf8')
+        else:
+            return field.parts[-1][0]
+
+    return None
+
+
+def get_field_data(reader: GGUFReader, key: str) -> Any:
+    field = reader.get_field(key)
+
+    return decode_field(field)
+
+
+def copy_with_filename(reader: GGUFReader, writer: GGUFWriter, filename: str[Any]) -> None:
+    logger.debug(f'copy_with_filename: {filename}') # debug
+    val = filename
+    for field in reader.fields.values():
+        # Suppress virtual fields and fields written by GGUFWriter
+        if field.name == Keys.General.ARCHITECTURE or field.name.startswith('GGUF.'):
+            logger.debug(f'Suppressing {field.name}')
+            continue
+
+        # Copy existed fields except 'embedded_files'
+        if not field.name == Keys.EMBEDDED_FILES:
+            cur_val = decode_field(field)
+            writer.add_key(field.name)
+            writer.add_val(cur_val, field.types[0])
+            logger.debug(f'Copying {field.name}')
+            continue
+
+        # Update embedded_files
+        val = decode_field(field)
+        for path in filename:
+            logger.debug(f'Adding {field.name}: {path}')
+            val.append(path)
+
+    # Add filenames to kv
+    logger.info(f'* Modifying {Keys.EMBEDDED_FILES} to {val}')
+    writer.add_array(Keys.EMBEDDED_FILES, val)
+
+    for tensor in reader.tensors:
+        # Dimensions are written in reverse order, so flip them first
+        shape = np.flipud(tensor.shape)
+        writer.add_tensor_info(tensor.name, shape, tensor.data.dtype, tensor.data.nbytes, tensor.tensor_type)
+
+    # Add file info as tensor_info
+    for path in filename:
+        logger.debug(f'Adding tensor_info {path}')
+        with open(path, "rb") as f:
+            data = f.read()
+            data_len = len(data)
+            dims = [data_len]
+            raw_dtype = GGMLQuantizationType.I8
+            writer.add_tensor_info(path, dims, np.float16, data_len, raw_dtype)
+
+    writer.write_header_to_file()
+    writer.write_kv_data_to_file()
+    writer.write_ti_data_to_file()
+
+    for tensor in reader.tensors:
+        writer.write_tensor_data(tensor.data)
+
+    # Write file body as tensor data
+    for path in filename:
+        logger.debug(f'Adding tensor data {path}')
+        with open(path, "rb") as f:
+            data = f.read()
+            data_len = len(data)
+            # write data with padding
+            writer.write_data(data)
+
+    writer.close()
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser(description="Add files to GGUF file metadata")
+    parser.add_argument("input",        type=str,            help="GGUF format model input filename")
+    parser.add_argument("output",       type=str,            help="GGUF format model output filename")
+    parser.add_argument("addfiles",     type=str, nargs='+', help="add filenames ...")
+    parser.add_argument("--force",      action="store_true", help="Bypass warnings without confirmation")
+    parser.add_argument("--verbose",    action="store_true", help="Increase output verbosity")
+    args = parser.parse_args(None if len(sys.argv) > 1 else ["--help"])
+    logging.basicConfig(level=logging.DEBUG if args.verbose else logging.INFO)
+
+    logger.info(f'* Loading: {args.input}')
+    reader = GGUFReader(args.input, 'r')
+    arch = get_field_data(reader, Keys.General.ARCHITECTURE)
+    endianess = get_byteorder(reader)
+
+    if os.path.isfile(args.output) and not args.force:
+        logger.warning('*** Warning *** Warning *** Warning **')
+        logger.warning(f'* The "{args.output}" GGUF file already exists, it will be overwritten!')
+        logger.warning('* Enter exactly YES if you are positive you want to proceed:')
+        response = input('YES, I am sure> ')
+        if response != 'YES':
+            logger.info("You didn't enter YES. Okay then, see ya!")
+            sys.exit(0)
+
+    logger.info(f'* Writing: {args.output}')
+    writer = GGUFWriter(args.output, arch=arch, endianess=endianess)
+
+    alignment = get_field_data(reader, Keys.General.ALIGNMENT)
+    if alignment is not None:
+        logger.debug(f'Setting custom alignment: {alignment}')
+        writer.data_alignment = alignment
+
+    if args.addfiles is not None:
+        filename = []
+        for path in args.addfiles:
+            filename.append(path)
+            logger.info(f'* Adding: {path}')
+        copy_with_filename(reader, writer, filename)
+
+
+if __name__ == '__main__':
+    main()