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Python script to find the largest files in a git repository.
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#!/usr/bin/env python3 | |
# -*- coding: utf-8 -*- | |
# | |
# Updated to use Python 3 by Malcolm Greaves. | |
# | |
# Python script to find the largest files in a git repository. | |
# The general method is based on the script in this blog post: | |
# http://stubbisms.wordpress.com/2009/07/10/git-script-to-show-largest-pack-objects-and-trim-your-waist-line/ | |
# | |
# The above script worked for me, but was very slow on my 11GB repository. This version has a bunch | |
# of changes to speed things up to a more reasonable time. It takes less than a minute on repos with 250K objects. | |
# | |
# The MIT License (MIT) | |
# Copyright (c) 2015 Nick Kocharhook | |
# | |
# Permission is hereby granted, free of charge, to any person obtaining a copy of this software and | |
# associated documentation files (the "Software"), to deal in the Software without restriction, | |
# including without limitation the rights to use, copy, modify, merge, publish, distribute, | |
# sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is | |
# furnished to do so, subject to the following conditions: | |
# | |
# The above copyright notice and this permission notice shall be included in all copies or | |
# substantial portions of the Software. | |
# | |
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT | |
# NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, | |
# DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT | |
# OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
from subprocess import check_output, CalledProcessError, Popen, PIPE | |
import argparse | |
import signal | |
import sys | |
sortByOnDiskSize = False | |
def main(): | |
global sortByOnDiskSize | |
signal.signal(signal.SIGINT, signal_handler) | |
args = parseArguments() | |
sortByOnDiskSize = args.sortByOnDiskSize | |
sizeLimit = 1024*args.filesExceeding | |
if args.filesExceeding > 0: | |
print(f"Finding objects larger than {args.filesExceeding}kB…") | |
else: | |
print(f"Finding the {args.matchCount} largest objects…") | |
blobs = getTopBlobs(args.matchCount, sizeLimit) | |
populateBlobPaths(blobs) | |
printOutBlobs(blobs) | |
def getTopBlobs(count, sizeLimit): | |
sortColumn = 4 | |
if sortByOnDiskSize: | |
sortColumn = 3 | |
verifyPack = f"git verify-pack -v `git rev-parse --git-dir`/objects/pack/pack-*.idx | grep blob | sort -k{sortColumn}nr" | |
output = check_output(verifyPack, shell=True).decode('utf-8').split("\n")[:-1] | |
blobs = dict() | |
compareBlob = Blob(f"a b {sizeLimit} {sizeLimit} c") # use __lt__ to do the appropriate comparison | |
for objLine in output: | |
blob = Blob(objLine) | |
if sizeLimit > 0: | |
if compareBlob < blob: | |
blobs[blob.sha1] = blob | |
else: | |
break | |
else: | |
blobs[blob.sha1] = blob | |
if len(blobs) == count: | |
break | |
return blobs | |
def populateBlobPaths(blobs): | |
if len(blobs) > 0: | |
print("Finding object paths…") | |
outstandingKeys = set(blobs.keys()) | |
# Only include revs which have a path. Other revs aren't blobs. | |
revList = "git rev-list --all --objects | awk '$2 {print}'" | |
allObjectLines = check_output(revList, shell=True).decode('utf-8').split("\n")[:-1] | |
for line in allObjectLines: | |
cols = line.split() | |
sha1, path = cols[0], " ".join(cols[1:]) | |
if sha1 in outstandingKeys: | |
outstandingKeys.remove(sha1) | |
blobs[sha1].path = path | |
# short-circuit the search if we're done | |
if not len(outstandingKeys): | |
break | |
def printOutBlobs(blobs): | |
if len(blobs) > 0: | |
csvLines = ["size,pack,hash,path"] | |
for blob in sorted(blobs.values(), reverse=True): | |
csvLines.append(blob.csvLine()) | |
p = Popen(["column", "-t", "-s", "','"], stdin=PIPE, stdout=PIPE, stderr=PIPE) | |
lines = "\n".join(csvLines)+"\n" | |
stdout, stderr = p.communicate(lines.encode("UTF-8")) | |
print("\nAll sizes in kB. The pack column is the compressed size of the object inside the pack file.\n") | |
print(stdout.decode('utf-8').rstrip('\n')) | |
else: | |
print("No files found which match those criteria.") | |
def parseArguments(): | |
parser = argparse.ArgumentParser(description='List the largest files in a git repository') | |
parser.add_argument('-c', '--match-count', dest='matchCount', type=int, default=10, | |
help='The number of files to return. Default is 10. Ignored if --files-exceeding is used.') | |
parser.add_argument('--files-exceeding', dest='filesExceeding', type=int, default=0, | |
help='The cutoff amount, in KB. Files with a pack size (or pyhsical size, with -p) larger than this will be printed.') | |
parser.add_argument('-p', '--physical-sort', dest='sortByOnDiskSize', action='store_true', default=False, | |
help='Sort by the on-disk size of the files. Default is to sort by the pack size.') | |
return parser.parse_args() | |
def signal_handler(signal, frame): | |
print('Caught Ctrl-C. Exiting.') | |
sys.exit(0) | |
class Blob(object): | |
sha1 = '' | |
size = 0 | |
packedSize = 0 | |
path = '' | |
def __init__(self, line): | |
cols = line.split() | |
self.sha1, self.size, self.packedSize = cols[0], int(cols[2]), int(cols[3]) | |
def __repr__(self): | |
return f"{self.sha1} - {self.size} - {self.packedSize} - {self.path}" | |
def __lt__(self, other): | |
if (sortByOnDiskSize): | |
return self.size < other.size | |
else: | |
return self.packedSize < other.packedSize | |
def csvLine(self): | |
return f"{int(self.size/1024)},{int(self.packedSize/1024)},{self.sha1},{self.path}" | |
if __name__ == '__main__': | |
main() |
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Python 3.7.3
macOS Catalina 10.15.4
git version 2.23.0