mirror of
https://github.com/pre-commit/pre-commit.git
synced 2026-01-14 13:00:10 -06:00
94 lines
2.7 KiB
Python
94 lines
2.7 KiB
Python
from __future__ import print_function
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from __future__ import unicode_literals
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import io
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import os
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import os.path
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import stat
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from pre_commit.util import resource_filename
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# This is used to identify the hook file we install
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PREVIOUS_IDENTIFYING_HASHES = [
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'd8ee923c46731b42cd95cc869add4062',
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]
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IDENTIFYING_HASH = '4d9958c90bc262f47553e2c073f14cfe'
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def is_our_pre_commit(filename):
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return IDENTIFYING_HASH in io.open(filename).read()
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def is_previous_pre_commit(filename):
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contents = io.open(filename).read()
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return any(hash in contents for hash in PREVIOUS_IDENTIFYING_HASHES)
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def make_executable(filename):
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original_mode = os.stat(filename).st_mode
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os.chmod(
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filename,
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original_mode | stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH,
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)
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def install(runner, overwrite=False, hooks=False):
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"""Install the pre-commit hooks."""
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pre_commit_file = resource_filename('pre-commit-hook')
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# If we have an existing hook, move it to pre-commit.legacy
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if (
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os.path.exists(runner.pre_commit_path) and
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not is_our_pre_commit(runner.pre_commit_path) and
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not is_previous_pre_commit(runner.pre_commit_path)
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):
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os.rename(runner.pre_commit_path, runner.pre_commit_legacy_path)
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# If we specify overwrite, we simply delete the legacy file
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if overwrite and os.path.exists(runner.pre_commit_legacy_path):
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os.remove(runner.pre_commit_legacy_path)
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elif os.path.exists(runner.pre_commit_legacy_path):
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print(
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'Running in migration mode with existing hooks at {0}\n'
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'Use -f to use only pre-commit.'.format(
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runner.pre_commit_legacy_path,
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)
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)
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with open(runner.pre_commit_path, 'w') as pre_commit_file_obj:
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pre_commit_file_obj.write(open(pre_commit_file).read())
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make_executable(runner.pre_commit_path)
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print('pre-commit installed at {0}'.format(runner.pre_commit_path))
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# If they requested we install all of the hooks, do so.
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if hooks:
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for repository in runner.repositories:
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repository.require_installed()
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return 0
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def uninstall(runner):
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"""Uninstall the pre-commit hooks."""
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# If our file doesn't exist or it isn't ours, gtfo.
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if (
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not os.path.exists(runner.pre_commit_path) or (
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not is_our_pre_commit(runner.pre_commit_path) and
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not is_previous_pre_commit(runner.pre_commit_path)
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)
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):
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return 0
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os.remove(runner.pre_commit_path)
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print('pre-commit uninstalled')
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if os.path.exists(runner.pre_commit_legacy_path):
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os.rename(runner.pre_commit_legacy_path, runner.pre_commit_path)
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print('Restored previous hooks to {0}'.format(runner.pre_commit_path))
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return 0
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