mirror of https://github.com/qpdf/qpdf.git
99 lines
2.8 KiB
Plaintext
99 lines
2.8 KiB
Plaintext
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#!/usr/bin/env python3
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import os
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import sys
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import argparse
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import hashlib
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import re
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whoami = os.path.basename(sys.argv[0])
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BANNER = f'''//
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// This file is automatically generated by {whoami}.
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// Edits will be automatically overwritten if the build is
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// run in maintainer mode.
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//'''
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def warn(*args, **kwargs):
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print(*args, file=sys.stderr, **kwargs)
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class Main:
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SOURCES = [whoami, 'job.yml']
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SUMS = 'job.sums'
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def main(self, args=sys.argv[1:], prog=whoami):
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options = self.parse_args(args, prog)
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self.top(options)
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def parse_args(self, args, prog):
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parser = argparse.ArgumentParser(
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prog=prog,
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description='Generate files for QPDFJob',
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)
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mxg = parser.add_mutually_exclusive_group(required=True)
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mxg.add_argument('--check',
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help='update checksums if files are not up to date',
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action='store_true', default=False)
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mxg.add_argument('--generate',
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help='generate files from sources',
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action='store_true', default=False)
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return parser.parse_args(args)
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def top(self, options):
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if options.check:
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self.check()
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elif options.generate:
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self.generate()
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else:
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exit(f'{whoami} unknown mode')
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def get_hashes(self):
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hashes = {}
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for i in sorted(self.SOURCES):
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m = hashlib.sha256()
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with open(i, 'rb') as f:
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m.update(f.read())
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hashes[i] = m.hexdigest()
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return hashes
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def check(self):
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hashes = self.get_hashes()
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match = False
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try:
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old_hashes = {}
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with open(self.SUMS, 'r') as f:
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for line in f.readlines():
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m = re.match(r'^(\S+) (\S+)\s*$', line)
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if m:
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old_hashes[m.group(1)] = m.group(2)
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match = old_hashes == hashes
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except Exception:
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pass
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if not match:
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exit(f'{whoami}: auto job inputs have changed')
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def update_hashes(self):
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hashes = self.get_hashes()
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with open(self.SUMS, 'w') as f:
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print(f'# Generated by {whoami}', file=f)
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for k, v in hashes.items():
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print(f'{k} {v}', file=f)
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def generate(self):
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warn(f'{whoami}: regenerating auto job files')
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with open('libqpdf/qpdf/auto_job_decl.hh', 'w') as f:
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print(BANNER, file=f)
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# Update hashes last to ensure that this will be rerun in the
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# event of a failure.
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self.update_hashes()
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if __name__ == '__main__':
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try:
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os.chdir(os.path.dirname(os.path.realpath(__file__)))
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Main().main()
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except KeyboardInterrupt:
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exit(130)
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