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116 lines
2.8 KiB
Text
116 lines
2.8 KiB
Text
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#!/usr/bin/env python
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#
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# Copyright (c) 2011, 2012, Simon Howard
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#
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# Permission to use, copy, modify, and/or distribute this software
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# for any purpose with or without fee is hereby granted, provided
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# that the above copyright notice and this permission notice appear
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# in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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# WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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# AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
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# CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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# NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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#
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from re import match
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from os import rename, popen, getcwd, chdir
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from os.path import exists, dirname, basename
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from os.path import join as path_join
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from glob import glob
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import sys
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def parse_stats(text):
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m = match(r"(.*)% of (.*)", text)
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pct = m.group(1)
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lines = int(m.group(2))
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cov_lines = int(float(pct) * lines / 100 + 0.5)
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uncov_lines = lines - cov_lines
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return (pct + "%", uncov_lines, cov_lines, lines)
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def gcov(filename):
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# gcov must be run from within the same directory as the source
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# file that we are analysing.
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old_wd = getcwd()
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src_dir = dirname(filename)
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chdir(src_dir)
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s = popen("gcov %s" % basename(filename))
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chdir(old_wd)
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# Process output from gcov.
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# This may cover multiple files when one .c file includes another.
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results = {}
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filename = None
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# File 'lha_file_header.c'
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# Lines executed:88.97% of 136
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for line in s:
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m = match(r"File '(.*)'", line)
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if m:
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filename = m.group(1)
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m = match(r"Lines executed:(.*)", line)
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if m:
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full_path = path_join(src_dir, filename)
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results[full_path] = parse_stats(m.group(1))
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s.close()
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return results
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def format_output(filename, stats):
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print " %-35s%7s%7s%7s%7s" % ((filename, ) + stats)
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print
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format_output("Filename", ("Percent", "Uncov", "Cov", "Total"))
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print " " + ("-" * 65)
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for filename in sorted(sys.argv[1:]):
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gcno = filename.replace(".c", ".gcno")
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gcda = filename.replace(".c", ".gcda")
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xgcno = glob(path_join(dirname(gcno), "*-" + basename(gcno)))
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xgcda = glob(path_join(dirname(gcda), "*-" + basename(gcda)))
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# Must rename eg. liblhasatest_a-foo.gcno to foo.gcno:
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if len(xgcno) > 0:
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rename(xgcno[0], gcno)
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if len(xgcda) > 0:
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rename(xgcda[0], gcda)
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if not exists(gcno) or not exists(gcda):
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continue
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# Run gcov and parse output:
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results = gcov(filename)
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if len(results) > 0:
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if filename in results:
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format_output(filename, results[filename])
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else:
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format_output(filename, ("", "", "", ""))
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for subfile in sorted(results.keys()):
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if subfile.endswith(".h"):
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continue
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if subfile != filename:
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format_output(" -> " + subfile, results[subfile])
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print
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