mirror of
https://github.com/peridotbuild/pv2.git
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185d144567
Adds the importutil module that allows targetting a specific source RPM
file and importing and tagging. It aims to keep the same structure of
git.centos.org.
Other changes:
* constants.py: New constants added for git and rpm
* error.py: New git and rpm error classes added
* fileutil.py:
* Add filter_files_inverse (matches everything but the filter)
* Add get_magic_file (returns magic data from a file)
* Add get_magic_content (returns magic data from data/content)
* generic.py: Add safe_encoding to return a urlquote string
* processor.py:
* Add run_proc_foreground_shell to support shell calls
* Add run_proc_no_output_shell to support shell calls
* rpmutil.py:
* get_rpm_header now supports verify_signature parameter (default
false). If set to true and key is not available, raises exception.
* Add verify_rpm_signature, which allows local rpm verification
without ingesting the whole header into a usable object.
* Add add_rpm_key, which enables a user to add a key to the rpm
keyring.
85 lines
2.4 KiB
Python
85 lines
2.4 KiB
Python
"""
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File functions
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"""
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import os
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import hashlib
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import magic
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from pv2.util import error as err
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# File utilities
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__all__ = [
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'filter_files',
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'filter_files_inverse',
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'get_checksum',
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'get_magic_file',
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'get_magic_content'
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]
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def filter_files(directory_path: str, filter_filename: str) -> list:
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"""
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Filter out specified files
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"""
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return_list = []
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for file in os.scandir(directory_path):
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if filter_filename(file.name):
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return_list.append(os.path.join(directory_path, file.name))
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return return_list
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def filter_files_inverse(directory_path: str, filter_filename: str) -> list:
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"""
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Filter out specified files (inverse)
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"""
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return_list = []
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for file in os.scandir(directory_path):
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if not filter_filename(file.name):
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return_list.append(os.path.join(directory_path, file.name))
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return return_list
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def get_checksum(file_path: str, hashtype: str = 'sha256') -> str:
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"""
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Generates a checksum from the provided path by doing things in chunks. This
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reduces the time needed to make the hashes and avoids memory issues.
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Borrowed from empanadas with some modifications
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"""
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# We shouldn't be using sha1 or md5.
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if hashtype in ('sha', 'sha1', 'md5'):
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raise err.ProvidedValueError(f'{hashtype} is not allowed.')
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try:
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checksum = hashlib.new(hashtype)
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except ValueError as exc:
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raise err.GenericError(f'hash type not available: {ValueError}') from exc
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try:
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with open(file_path, 'rb') as input_file:
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while True:
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chunk = input_file.read(8192)
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if not chunk:
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break
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checksum.update(chunk)
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input_file.close()
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return checksum.hexdigest()
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except IOError as exc:
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raise err.GenericError(f'Could not open or process file {file_path}: {exc})')
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def get_magic_file(file_path: str):
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"""
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Returns the magic data from a file. Use this to get mimetype and other info
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you'd get by just running `file`
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"""
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detect = magic.detect_from_filename(file_path)
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return detect
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def get_magic_content(data):
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"""
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Returns the magic data from content. Use this to get mimetype and other info
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you'd get by just running `file` on a file (but only pass read file data)
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"""
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detect = magic.detect_from_content(data)
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return detect
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