mirror of
https://github.com/pre-commit/pre-commit.git
synced 2026-01-13 20:40:08 -06:00
83 lines
2.4 KiB
Python
83 lines
2.4 KiB
Python
from __future__ import absolute_import
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from __future__ import unicode_literals
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import argparse
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import re
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import sys
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from pre_commit import output
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from pre_commit.languages import helpers
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from pre_commit.xargs import xargs
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ENVIRONMENT_DIR = None
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get_default_version = helpers.basic_get_default_version
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healthy = helpers.basic_healthy
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install_environment = helpers.no_install
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def _process_filename_by_line(pattern, filename):
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retv = 0
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with open(filename, 'rb') as f:
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for line_no, line in enumerate(f, start=1):
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if pattern.search(line):
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retv = 1
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output.write('{}:{}:'.format(filename, line_no))
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output.write_line(line.rstrip(b'\r\n'))
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return retv
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def _process_filename_at_once(pattern, filename):
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retv = 0
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with open(filename, 'rb') as f:
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contents = f.read()
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match = pattern.search(contents)
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if match:
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retv = 1
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line_no = contents[:match.start()].count(b'\n')
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output.write('{}:{}:'.format(filename, line_no + 1))
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matched_lines = match.group().split(b'\n')
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matched_lines[0] = contents.split(b'\n')[line_no]
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output.write_line(b'\n'.join(matched_lines))
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return retv
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def run_hook(hook, file_args):
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exe = (sys.executable, '-m', __name__) + tuple(hook.args) + (hook.entry,)
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return xargs(exe, file_args)
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def main(argv=None):
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parser = argparse.ArgumentParser(
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description=(
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'grep-like finder using python regexes. Unlike grep, this tool '
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'returns nonzero when it finds a match and zero otherwise. The '
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'idea here being that matches are "problems".'
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),
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)
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parser.add_argument('-i', '--ignore-case', action='store_true')
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parser.add_argument('--multiline', action='store_true')
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parser.add_argument('pattern', help='python regex pattern.')
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parser.add_argument('filenames', nargs='*')
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args = parser.parse_args(argv)
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flags = re.IGNORECASE if args.ignore_case else 0
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if args.multiline:
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flags |= re.MULTILINE | re.DOTALL
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pattern = re.compile(args.pattern.encode(), flags)
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retv = 0
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for filename in args.filenames:
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if args.multiline:
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retv |= _process_filename_at_once(pattern, filename)
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else:
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retv |= _process_filename_by_line(pattern, filename)
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return retv
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if __name__ == '__main__':
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exit(main())
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