File size: 4,690 Bytes
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import os
import subprocess
import sys
import argparse
import time
sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
KB = 1024
MB = 1024 * 1024
GB = 1024 * 1024 * 1024
def check_and_install_zipnn():
try:
import zipnn
except ImportError:
print("zipnn not found. Installing...")
subprocess.check_call(
[
sys.executable,
"-m",
"pip",
"install",
"zipnn",
"--upgrade",
]
)
import zipnn
def parse_streaming_chunk_size(
streaming_chunk_size,
):
if str(streaming_chunk_size).isdigit():
final = int(streaming_chunk_size)
else:
size_value = int(streaming_chunk_size[:-2])
size_unit = streaming_chunk_size[-2].lower()
if size_unit == "k":
final = KB * size_value
elif size_unit == "m":
final = MB * size_value
elif size_unit == "g":
final = GB * size_value
else:
raise ValueError(f"Invalid size unit: {size_unit}. Use 'k', 'm', or 'g'.")
return final
def compress_file(
input_file,
dtype="",
streaming_chunk_size=1048576,
delete=False,
force=False,
):
import zipnn
streaming_chunk_size = parse_streaming_chunk_size(streaming_chunk_size)
full_path = input_file
if not os.path.exists(full_path):
print("File not found")
return
if delete:
print(f"Deleting {full_path}...")
os.remove(full_path)
else:
compressed_path = full_path + ".znn"
if not force and os.path.exists(compressed_path):
user_input = (
input(f"{compressed_path} already exists; overwrite (y/n)? ").strip().lower()
)
if user_input not in ("yes", "y"):
print(f"Skipping {full_path}...")
return
print(f"Compressing {full_path}...")
#
output_file = input_file + ".znn"
if dtype:
zpn = zipnn.ZipNN(
bytearray_dtype="float32",
is_streaming=True,
streaming_chunk_kb=streaming_chunk_size,
)
else:
zpn = zipnn.ZipNN(
is_streaming=True,
streaming_chunk_kb=streaming_chunk_size,
)
file_size_before = 0
file_size_after = 0
start_time = time.time()
with open(input_file, "rb") as infile, open(output_file, "wb") as outfile:
chunk = infile.read()
file_size_before += len(chunk)
compressed_chunk = zpn.compress(chunk)
if compressed_chunk:
file_size_after += len(compressed_chunk)
outfile.write(compressed_chunk)
end_time = time.time() - start_time
print(f"Compressed {input_file} to {output_file}")
print(
f"Original size: {file_size_before/GB:.02f}GB size after compression: {file_size_after/GB:.02f}GB, Remaining size is {file_size_after/file_size_before*100:.02f}% of original, time: {end_time:.02f}"
)
if __name__ == "__main__":
if len(sys.argv) < 2:
print("Usage: python compress_files.py <suffix>")
print("Example: python compress_files.py 'safetensors'")
sys.exit(1)
parser = argparse.ArgumentParser(description="Enter a file path to compress.")
parser.add_argument(
"input_file",
type=str,
help="Specify the path to the file to compress.",
)
parser.add_argument(
"--float32",
action="store_true",
help="A flag that triggers float32 compression",
)
parser.add_argument(
"--streaming_chunk_size",
type=str,
help="An optional streaming chunk size. The format is int (for size in Bytes) or int+KB/MB/GB. Default is 1MB",
)
parser.add_argument(
"--delete",
action="store_true",
help="A flag that triggers deletion of a single file instead of compression",
)
parser.add_argument(
"--force",
action="store_true",
help="A flag that forces overwriting when compressing.",
)
args = parser.parse_args()
optional_kwargs = {}
if args.float32:
optional_kwargs["dtype"] = 32
if args.streaming_chunk_size is not None:
optional_kwargs["streaming_chunk_size"] = args.streaming_chunk_size
if args.delete:
optional_kwargs["delete"] = args.delete
if args.force:
optional_kwargs["force"] = args.force
check_and_install_zipnn()
compress_file(args.input_file, **optional_kwargs)
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