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#!/usr/bin/env python3
#
# Wrapper around 'ar' that defaults to deterministic archives
import os
import shutil
import sys
# calculate path to the real 'ar'
path = os.environ['PATH']
path = path.replace(os.path.dirname(sys.argv[0]), '')
real_ar = shutil.which('ar', path=path)
if len(sys.argv) == 1:
os.execl(real_ar, 'ar')
# modify args to mimic 'ar' configured with --default-deterministic-archives
argv = sys.argv
if argv[1].startswith('--'):
# No modifier given
None
elif argv[1][0] == '@':
# Reading parameters from @file, we can try to inject D on the first line as well
# but modifying input files seems a bit too far for this intercept, bazel-native
# uses it but with rcsD by default
None
else:
# remove the optional '-'
if argv[1][0] == '-':
argv[1] = argv[1][1:]
if 'U' in argv[1]:
sys.stderr.write("ar: non-deterministic mode requested\n")
else:
argv[1] = argv[1].replace('u', '')
argv[1] = 'D' + argv[1]
os.execv(real_ar, argv)
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