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Make install -f / --overwrite work.

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This commit is contained in:
Anthony Sottile 2014-06-16 17:33:25 -07:00
parent 1d8394afd0
commit ac735e85e2
4 changed files with 80 additions and 7 deletions
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16
pre_commit/commands/install.py
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@ -7,6 +7,7 @@ import os.path
import pkg_resources
import stat
# This is used to identify the hook file we install
IDENTIFYING_HASH = 'd8ee923c46731b42cd95cc869add4062'
@ -23,7 +24,7 @@ def make_executable(filename):
)
def install(runner):
def install(runner, overwrite=False):
"""Install the pre-commit hooks."""
pre_commit_file = pkg_resources.resource_filename(
'pre_commit', 'resources/pre-commit-hook',
@ -34,7 +35,18 @@ def install(runner):
os.path.exists(runner.pre_commit_path) and
not is_our_pre_commit(runner.pre_commit_path)
):
os.rename(runner.pre_commit_path, runner.pre_commit_path + '.legacy')
os.rename(runner.pre_commit_path, runner.pre_commit_legacy_path)
# If we specify overwrite, we simply delete the legacy file
if overwrite and os.path.exists(runner.pre_commit_legacy_path):
os.remove(runner.pre_commit_legacy_path)
elif os.path.exists(runner.pre_commit_legacy_path):
print(
'Running in migration mode with existing hooks at {0}\n'
'Use -f to use only pre-commit.'.format(
runner.pre_commit_legacy_path,
)
)
with open(runner.pre_commit_path, 'w') as pre_commit_file_obj:
pre_commit_file_obj.write(open(pre_commit_file).read())