diff options
Diffstat (limited to 'git-coverage')
| -rwxr-xr-x | git-coverage | 473 |
1 files changed, 272 insertions, 201 deletions
diff --git a/git-coverage b/git-coverage index ac837c9..09c803d 100755 --- a/git-coverage +++ b/git-coverage @@ -8,6 +8,9 @@ import subprocess import sys COVERAGE_EXTENSIONS = [".c", ".cpp", ".cc"] +SKIP_PATTERNS = [ + 'assert_not_reached' +] # Portions of the code: # @@ -46,179 +49,155 @@ class BadPatch(Exception): def __str__(self): return self.message - -def get_patch_names(iter_lines): - try: - line = iter_lines.next() - if not line.startswith("--- "): - raise BadPatch("No orig name: %s" % line) - else: - orig_name = line[4:].rstrip("\n") - except StopIteration: - raise BadPatch("No orig line") - try: - line = iter_lines.next() - if not line.startswith("+++ "): - raise BadPatch("No mod name") - else: - mod_name = line[4:].rstrip("\n") - except StopIteration: - raise BadPatch("No mod line") - return (orig_name, mod_name) - - -def parse_range(textrange): - tmp = textrange.split(',') - if len(tmp) == 1: - pos = tmp[0] - range = "1" - else: - (pos, range) = tmp - pos = int(pos) - range = int(range) - return (pos, range) - - -def hunk_from_header(line): - matches = re.match(r'\@\@ ([^@]*) \@\@( (.*))?\n', line) - if matches is None: - raise MalformedHunkHeader("Does not match format.", line) - try: - (orig, mod) = matches.group(1).split(" ") - except (ValueError, IndexError), e: - raise MalformedHunkHeader(str(e), line) - if not orig.startswith('-') or not mod.startswith('+'): - raise MalformedHunkHeader("Positions don't start with + or -.", line) - try: - (orig_pos, orig_range) = parse_range(orig[1:]) - (mod_pos, mod_range) = parse_range(mod[1:]) - except (ValueError, IndexError), e: - raise MalformedHunkHeader(str(e), line) - if mod_range < 0 or orig_range < 0: - raise MalformedHunkHeader("Hunk range is negative", line) - tail = matches.group(3) - return Hunk(orig_pos, orig_range, mod_pos, mod_range, tail) - - -class HunkLine: - def __init__(self, contents): - self.contents = contents - - -class ContextLine(HunkLine): - def __init__(self, contents): - HunkLine.__init__(self, contents) - - -class InsertLine(HunkLine): - def __init__(self, contents): - HunkLine.__init__(self, contents) - - -class RemoveLine(HunkLine): - def __init__(self, contents): - HunkLine.__init__(self, contents) - - -def parse_line(line): - if line.startswith("\n"): - return ContextLine(line) - elif line.startswith(" "): - return ContextLine(line[1:]) - elif line.startswith("+"): - return InsertLine(line[1:]) - elif line.startswith("-"): - return RemoveLine(line[1:]) - else: - raise BadPatch("Unknown line type" % line) - - class Hunk: - def __init__(self, orig_pos, orig_range, mod_pos, mod_range, tail=None): + def __init__(self, orig_pos, orig_range, mod_pos, mod_range, header=None): self.orig_pos = orig_pos self.orig_range = orig_range self.mod_pos = mod_pos self.mod_range = mod_range - self.tail = tail + self.header = header self.lines = [] - -def iter_hunks(iter_lines, allow_dirty=False): - hunk = None - for line in iter_lines: - if line == "\n": + @staticmethod + def parse_range(textrange): + tmp = textrange.split(',') + if len(tmp) == 1: + pos = tmp[0] + range = "1" + else: + (pos, range) = tmp + pos = int(pos) + range = int(range) + return (pos, range) + + @staticmethod + def from_header(line): + matches = re.match(r'\@\@ ([^@]*) \@\@( (.*))?\n', line) + if matches is None: + raise MalformedHunkHeader("Does not match format.", line) + try: + (orig, mod) = matches.group(1).split(" ") + except (ValueError, IndexError), e: + raise MalformedHunkHeader(str(e), line) + if not orig.startswith('-') or not mod.startswith('+'): + raise MalformedHunkHeader("Positions don't start with + or -.", line) + try: + (orig_pos, orig_range) = Hunk.parse_range(orig[1:]) + (mod_pos, mod_range) = Hunk.parse_range(mod[1:]) + except (ValueError, IndexError), e: + raise MalformedHunkHeader(str(e), line) + if mod_range < 0 or orig_range < 0: + raise MalformedHunkHeader("Hunk range is negative", line) + tail = matches.group(3) + return Hunk(orig_pos, orig_range, mod_pos, mod_range, line) + + @staticmethod + def parse(lines, allow_dirty=True): + hunk = None + lines = iter(lines) + for line in lines: + if line == "\n": + if hunk is not None: + yield hunk + hunk = None + continue if hunk is not None: yield hunk - hunk = None - continue + try: + hunk = Hunk.from_header(line) + except MalformedHunkHeader: + if allow_dirty: + # If the line isn't a hunk header, then we've reached the end + # of this patch and there's "junk" at the end. Ignore the + # rest of this patch. + return + raise + orig_size = 0 + mod_size = 0 + offset = hunk.mod_pos + while orig_size < hunk.orig_range or mod_size < hunk.mod_range: + hunk_line = lines.next() + if hunk_line.startswith("-"): + orig_size += 1 + elif hunk_line.startswith("\n"): + orig_size += 1 + mod_size += 1 + elif hunk_line.startswith(" "): + orig_size += 1 + mod_size += 1 + elif hunk_line.startswith("+"): + mod_size += 1 + else: + raise BadPatch("Unknown line type: %s" % hunk_line) + hunk.lines.append((offset, hunk_line)) + if not hunk_line.startswith("-"): + offset += 1 if hunk is not None: yield hunk - try: - hunk = hunk_from_header(line) - except MalformedHunkHeader: - if allow_dirty: - # If the line isn't a hunk header, then we've reached the end - # of this patch and there's "junk" at the end. Ignore the - # rest of this patch. - return - raise - orig_size = 0 - mod_size = 0 - while orig_size < hunk.orig_range or mod_size < hunk.mod_range: - hunk_line = parse_line(iter_lines.next()) - hunk.lines.append(hunk_line) - if isinstance(hunk_line, (RemoveLine, ContextLine)): - orig_size += 1 - if isinstance(hunk_line, (InsertLine, ContextLine)): - mod_size += 1 - if hunk is not None: - yield hunk class Patch(object): def __init__(self, oldname, newname): self.oldname = oldname self.newname = newname + self.prefix = [] self.hunks = [] - -def parse_patch(iter_lines, allow_dirty=False): - (orig_name, mod_name) = get_patch_names(iter_lines) - patch = Patch(orig_name, mod_name) - for hunk in iter_hunks(iter_lines, allow_dirty): - patch.hunks.append(hunk) - return patch - - -def iter_file_patch(iter_lines, allow_dirty=False): - saved_lines = [] - orig_range = 0 - beginning = True - for line in iter_lines: - if BINARY_FILES_RE.match(line): - continue - if line.startswith('=== ') or line.startswith('*** '): - continue - if line.startswith('#'): - continue - elif orig_range > 0: - if line.startswith('-') or line.startswith(' '): - orig_range -= 1 - elif line.startswith('--- '): - if allow_dirty and beginning: - # Patches can have "junk" at the beginning - # Stripping junk from the end of patches is handled when we - # parse the patch - beginning = False - elif len(saved_lines) > 0: - yield saved_lines - saved_lines = [] - elif line.startswith('@@'): - hunk = hunk_from_header(line) - orig_range = hunk.orig_range - saved_lines.append(line) - if len(saved_lines) > 0: - yield saved_lines + @staticmethod + def parse_one(lines, allow_dirty=True): + try: + first = lines.next() + if not first.startswith("--- "): + raise BadPatch("No orig name: %s" % first) + else: + orig_name = first[4:].rstrip("\n") + except StopIteration: + raise BadPatch("No orig line") + try: + second = lines.next() + if not second.startswith("+++ "): + raise BadPatch("No mod name") + else: + mod_name = second[4:].rstrip("\n") + except StopIteration: + raise BadPatch("No mod line") + + patch = Patch(orig_name, mod_name) + for hunk in Hunk.parse(lines, allow_dirty): + patch.hunks.append(hunk) + patch.prefix = [first, second] + return patch + + @staticmethod + def parse(lines, allow_dirty=True): + saved_lines = [] + orig_range = 0 + beginning = True + for line in lines: + if BINARY_FILES_RE.match(line): + continue + if line.startswith('=== ') or line.startswith('*** '): + continue + if line.startswith('#'): + continue + elif orig_range > 0: + if line.startswith('-') or line.startswith(' '): + orig_range -= 1 + elif line.startswith('--- '): + if allow_dirty and beginning: + # Patches can have "junk" at the beginning + # Stripping junk from the end of patches is handled when we + # parse the patch + beginning = False + elif len(saved_lines) > 0: + yield Patch.parse_one(iter(saved_lines), allow_dirty) + saved_lines = [] + elif line.startswith('@@'): + hunk = Hunk.from_header(line) + orig_range = hunk.orig_range + saved_lines.append(line) + if len(saved_lines) > 0: + yield Patch.parse_one(iter(saved_lines), allow_dirty) # @@ -234,23 +213,38 @@ def iter_process_lines(argv): else: return -def iter_desired_coverage(iter_lines): - for fil in iter_file_patch(iter_lines, allow_dirty=True): - patch = parse_patch(fil.__iter__(), allow_dirty=True) - filename = os.path.normpath(patch.newname.split("/", 1)[1]) - (root, ext) = os.path.splitext(filename) - if ext not in COVERAGE_EXTENSIONS: - continue - for hunk in patch.hunks: - offset = hunk.mod_pos - for line in hunk.lines: - if isinstance(line, RemoveLine): - yield (filename, offset, line.contents) - elif isinstance(line, InsertLine): - yield (filename, offset, line.contents) - offset += 1 - else: - offset += 1 +def ensure_gcda_file(gcno): + (base, ext) = os.path.splitext(gcno) + gcda = base + ".gcda" + + # From gcov-io.h + # The basic format of the files is + # + # file : int32:magic int32:version int32:stamp record* + # + # magic for gcno files is 'gcno' as an integer, big or little endian + # and for gcda files it is 'gcda' + + if os.path.exists(gcda): + return True + + return False + + # with open(gcno, 'r') as fi: + # bytes = fi.read(12) + # if len(bytes) != 12: + # return False + # if bytes[0:4] == 'gcno': + # bytes = 'gcda' + bytes[4:] + # elif bytes[0:4] == 'oncg': + # bytes = 'adcg' + bytes[4:] + # else: + # print "bad", bytes[0:4] + # return False + # with open(gcda, 'w') as fo: + # fo.write(bytes) + # return True + def find_all_gcno_files(directory): paths = [] @@ -261,10 +255,8 @@ def find_all_gcno_files(directory): continue if not fnmatch.fnmatch(name, "*.gcno"): continue - (base, ext) = os.path.splitext(path) - if not os.path.exists(base + ".gcda"): - continue - paths.append(path) + if ensure_gcda_file(path): + paths.append(path) os.path.walk(".", visit, paths) return paths @@ -343,42 +335,121 @@ def gcov_coverage_lines(gcov_iter): pass return coverage - -def main(argv): - try: - opts, args = getopt.getopt(argv[1:], "h", ["help"]) - except getopt.GetoptError, err: - print str(err) - return 2 - for o, a in opts: - if o in ("-h", "--help"): - usage() - return 0 +class Output: + defaults = { + 'diff.new': 'green', + 'diff.meta': 'bold', + 'diff.plain': 'normal', + 'diff.frag': 'cyan', + 'diff.old': 'red', + 'diff.whitespace': 'normal red', + 'diff.problem': 'normal red' + } + + def __init__(self, output): + self.output = output + self.escapes = { } + + cmd = ['git', 'config', '--get-colorbool', + 'color.diff', output.isatty() and 'true' or 'false'] + self.with_colors = subprocess.check_output(cmd).strip() == 'true' + + def write_meta(self, data, meta): + if not self.with_colors: + pass + elif not meta: + self.output.write('\033[0m') + elif meta in self.escapes: + self.output.write(self.escapes[meta]) else: - assert False, "unhandled option" + default = self.defaults.get(meta, 'normal') + cmd = ['git', 'config', '--get-color', "color.%s" % meta, default] + escape = subprocess.check_output(cmd) + self.output.write(escape) + self.escapes[meta] = escape + self.write(data) + if self.with_colors: + self.output.write('\033[0m') + + def write(self, data): + self.output.write(data) + +def print_patch_hunks(patch, hunks, coverage, output): + for line in patch.prefix: + output.write_meta(line, 'diff.meta') + for hunk in hunks: + output.write_meta(hunk.header, 'diff.frag') + for (no, line) in hunk.lines: + if no in coverage: + output.write(" ") + else: + output.write_meta("!", 'diff.problem') + if line.startswith("-"): + output.write_meta(line, 'diff.old') + elif line.startswith("+"): + output.write_meta(line, 'diff.new') + else: + output.write_meta(line, 'diff.plain') + +def is_hunk_covered(hunk, coverage, patterns): + for (no, contents) in hunk.lines: + if no not in coverage: + for pattern in patterns: + data = contents[1:].strip() + if pattern.search(data): + break + else: + return False + return True - if len(args) == 0: - cmd = ['git', 'diff', 'HEAD'] + +def main(argv): + have_target = False + for arg in argv[1:]: + if not arg.startswith("-"): + have_target = True + break; + + if have_target: + cmd = ['git', 'diff'] + argv[1:] else: - cmd = ['git', 'show'] + args + cmd = ['git', 'diff', 'HEAD'] - # First process all the lines that we need - needed_coverage = { } - iterator = iter_process_lines(cmd) - for (filename, no, content) in iter_desired_coverage(iterator): - if filename not in needed_coverage: - needed_coverage[filename] = { } - needed_coverage[filename][no] = content + printed_any = 0 + output = Output(sys.stdout) + patches_by_filename = { } + # Pull all the patches appart into the hunks that we need + for patch in Patch.parse(iter_process_lines(cmd)): + (name, ext) = os.path.splitext(patch.newname) + if ext not in COVERAGE_EXTENSIONS: + continue + filename = os.path.normpath(patch.newname.split("/", 1)[1]) + if filename not in patches_by_filename: + patches_by_filename[filename] = [] + patches_by_filename[filename].append(patch) + + # Find all the gcno files in the directory gcno_cache = find_all_gcno_files(".") - for (filename, needed) in needed_coverage.items(): + # Compile all the skip patterns + patterns = [re.compile(p) for p in SKIP_PATTERNS] + + # Now go through and calculate coverage + for (filename, patches) in patches_by_filename.items(): gcov = gcov_lines_for_files(filename, gcno_cache) coverage = gcov_coverage_lines(gcov) - for (no, content) in needed.items(): - if no not in coverage: - print filename, no, content, + for patch in patches: + to_print = [] + for hunk in patch.hunks: + if not is_hunk_covered(hunk, coverage, patterns): + to_print.append(hunk) + if to_print: + print_patch_hunks(patch, to_print, coverage, output) + printed_any = 1 + + return printed_any if __name__ == '__main__': sys.exit(main(sys.argv)) |