def begin(self):
# XXX: this is pretty hacky
if self.verbosity > 1:
self.logger.info("Parsing parent commit..")
proc = Popen(['git', 'merge-base', 'HEAD', self.parent],
stdout=PIPE,
stderr=STDOUT)
self.parent_revision = proc.stdout.read().strip()
if self.verbosity > 1:
self.logger.info("Parent commit identified as %s",
self.parent_revision)
# pull in our diff
# git diff `git merge-base HEAD master`
if self.verbosity > 1:
self.logger.info("Parsing diff..")
proc = Popen(['git', 'diff', self.parent_revision],
stdout=PIPE,
stderr=STDOUT)
diff = proc.stdout.read().strip()
parser = DiffParser(diff)
files = list(parser.parse())
diff = self.diff_data
for file in files:
# we dont care about headers
if file['is_header']:
continue
# file was removed
if file['new_filename'] == '/dev/null':
continue
is_new_file = (file['old_filename'] == '/dev/null')
if is_new_file:
filename = file['new_filename']
if not filename.startswith('b/'):
continue
else:
filename = file['old_filename']
if not filename.startswith('a/'):
continue # ??
filename = filename[2:]
if self.file_cache.root is None:
self.file_cache.root = os.path.abspath(
filename)[:-len(filename)]
# Ignore non python files
if not is_py_script(filename):
continue
new_filename = file['new_filename'][2:]
# file is new, only record diff state
for chunk in file['chunks']:
linenos = filter(bool,
(l['new_lineno'] for l in chunk if l['line']))
diff[new_filename].update(linenos)
if is_new_file:
continue
for prefix in self.prefixes:
self.pending_files.add(
os.path.join(prefix,
new_filename.rsplit('.', 1)[0]))
if self.verbosity > 1:
self.logger.info(
"Found %d changed file(s) and %d possible test paths..",
len(diff), len(self.pending_files))
