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68 lines
2.1 KiB
Python
68 lines
2.1 KiB
Python
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#!/usr/bin/env python
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"""
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Summarize the information in the given coverage files.
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Emits the number of rules covered or the percentage of rules covered depending
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on whether --num-rules has been used to specify the total number of rules.
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"""
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import argparse
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import struct
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class FileFormatError(Exception):
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pass
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def backend_int_pair(s):
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backend, sep, value = s.partition('=')
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if (sep is None):
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raise argparse.ArgumentTypeError("'=' missing, expected name=value")
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if (not backend):
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raise argparse.ArgumentTypeError("Expected name=value")
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if (not value):
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raise argparse.ArgumentTypeError("Expected name=value")
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return backend, int(value)
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def main():
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument('input', nargs='+')
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parser.add_argument('--num-rules', type=backend_int_pair, action='append',
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metavar='BACKEND=NUM',
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help='Specify the number of rules for a backend')
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args = parser.parse_args()
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covered_rules = {}
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for input_filename in args.input:
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with open(input_filename, 'rb') as input_fh:
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data = input_fh.read()
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pos = 0
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while data:
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backend, _, data = data.partition('\0')
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pos += len(backend)
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pos += 1
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if len(backend) == 0:
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raise FileFormatError()
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backend, = struct.unpack("%ds" % len(backend), backend)
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while data:
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if len(data) < 8:
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raise FileFormatError()
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rule_id, = struct.unpack("Q", data[:8])
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pos += 8
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data = data[8:]
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if rule_id == (2 ** 64) - 1:
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break
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covered_rules[backend] = covered_rules.get(backend, {})
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covered_rules[backend][rule_id] = covered_rules[backend].get(rule_id, 0) + 1
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num_rules = dict(args.num_rules)
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for backend, rules_for_backend in covered_rules.items():
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if backend in num_rules:
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print "%s: %3.2f%% of rules covered" % (backend, (float(len(rules_for_backend.keys())) / num_rules[backend]) * 100)
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else:
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print "%s: %d rules covered" % (backend, len(rules_for_backend.keys()))
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if __name__ == '__main__':
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main()
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