Gamercat/py-requirements-guesser
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Code Issues Projects Releases Wiki Activity

* Using git-log instead of git-blame

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* Refactoring
This commit is contained in:
j3rome 2021-06-24 02:32:38 -04:00
parent 6384f38db4
commit a34107588d
1 changed files with 42 additions and 55 deletions
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97
main.py
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@ -28,8 +28,7 @@ from utils import load_packages_from_requirements#, user_response_multi, user_re
# TODO : Add a mode on file/folder creation/last update if no git repo ?
EXTRACT_DATE_REGEX = re.compile(r'(\d*)\s(?=\d+\))')
EXTRACT_DATE_REGEX = re.compile(r'Date:\s*(\d+)')
LETTER_REGEX = re.compile(r'[a-zA-Z]')
parser = argparse.ArgumentParser("Python Requirements Version Guesser")
@ -62,58 +61,6 @@ def get_pypi_history(package_name, ignore_release_candidat=True):
return sorted(versions, key=lambda x:x[1], reverse=True)
def get_pypi_history_rss(package_name, ignore_release_candidat=True):
"""
Retrieve version release dates
Some releases don't comprises release date when queried via the JSON api.
We retrieve the version history via the RSS feed
"""
resp = requests.get(f"https://pypi.org/rss/project/{package_name}/releases.xml")
# FIXME : This is vulnerable to xml exploits. In theory a malicious user could insert a malicious payload into pypi description and get RCE on people using this package...
root_node = parse_xml(resp.text)
items = root_node[0].findall('item')
if len(items) == 0:
raise Exception(f"[ERROR] Couldn't retrieve versions for package {package_name} from Pypi")
versions = []
for item in items:
attributes = item.getchildren()
version = attributes[0].text
if 'rc' in version and ignore_release_candidat:
continue
release_date = datetime.strptime(attributes[-1].text, '%a, %d %b %Y %H:%M:%S %Z')
versions.append((version, release_date))
# FIXME : Do we really need to sort ? Versions should already be sorted
return sorted(versions, key=lambda x:x[1], reverse=True)
def get_date_added_to_requirements(package_name, requirements_filepath='requirements.txt'):
# NOTE : Must be in the git directory for this to work. Change directory before ?
cmd = f"git blame -L'/{package_name}/',+1 --date unix {requirements_filepath} 2>/dev/null"
try:
blame_out = subprocess.check_output(cmd, shell=True).decode()
except:
blame_out = ""
if len(blame_out) > 0:
matches = EXTRACT_DATE_REGEX.search(blame_out)
if matches:
date = datetime.fromtimestamp(int(matches.group(0)))
return date
raise Exception(f"[ERROR] Couldn't git blame {package_name} on {requirements_filepath}")
def find_version_at_date(available_versions, date):
last_version = available_versions[0][0]
@ -128,6 +75,46 @@ def find_version_at_date(available_versions, date):
return last_version
def get_date_when_package_added(package_name, via_requirements=False):
if not via_requirements:
search_pattern = f"^import {package_name}$|^from {package_name}"
filename = ""
else:
search_pattern = f"{package_name}$"
filename = "requirements.txt"
# We grep for 'date' | '+ search pattern' so that we keep only commits that insert lines (+)
cmd = f"git log -G '{search_pattern}' --date unix -p {filename} | grep -i 'date\\|\\+.*{package_name}'"
try:
blame_out = subprocess.check_output(cmd, shell=True).decode().strip()
except:
blame_out = ""
if len(blame_out) == 0:
#return []
raise Exception(f"[ERROR] couldn't find package '{package_name}' via git-log")
# Remove commit that are not directly followed by '+ import' (We grepped for this in cmd)
# This is ugly.. TODO: figure out a better way in the grep command
dates = []
got_plus = False
for line in blame_out.split('\n')[::-1]:
if line[0] == "+":
got_plus = True
elif got_plus:
got_plus = False
matches = EXTRACT_DATE_REGEX.search(line)
if matches:
dates.append(datetime.fromtimestamp(int(matches.group(1))))
else:
raise Exception("[ERROR] while parsing git-log")
# Get first date where the line was added
return sorted(dates, reverse=True)[0]
if __name__ == "__main__":
packages_in_requirements = load_packages_from_requirements('requirements.txt')
@ -136,7 +123,7 @@ if __name__ == "__main__":
for package_name, version in packages_in_requirements.items():
if version is None:
date_added = get_date_added_to_requirements(package_name)
date_added = get_date_when_package_added(package_name, via_requirements=True)
available_versions = get_pypi_history(package_name, ignore_release_candidat=True)
version = find_version_at_date(available_versions, date_added)
print(f"{package_name} - {date_added}")