mirror of
https://github.com/pre-commit/pre-commit.git
synced 2026-01-14 13:00:10 -06:00
139 lines
4.5 KiB
Python
139 lines
4.5 KiB
Python
from __future__ import print_function
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from __future__ import unicode_literals
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import re
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from collections import OrderedDict
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from aspy.yaml import ordered_dump
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from aspy.yaml import ordered_load
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import pre_commit.constants as C
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from pre_commit import output
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from pre_commit.clientlib import is_local_repo
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from pre_commit.clientlib import load_config
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from pre_commit.repository import Repository
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from pre_commit.util import CalledProcessError
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from pre_commit.util import cmd_output
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from pre_commit.util import cwd
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class RepositoryCannotBeUpdatedError(RuntimeError):
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pass
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def _update_repo(repo_config, runner, tags_only):
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"""Updates a repository to the tip of `master`. If the repository cannot
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be updated because a hook that is configured does not exist in `master`,
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this raises a RepositoryCannotBeUpdatedError
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Args:
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repo_config - A config for a repository
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"""
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repo = Repository.create(repo_config, runner.store)
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with cwd(repo._repo_path):
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cmd_output('git', 'fetch')
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tag_cmd = ('git', 'describe', 'origin/master', '--tags')
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if tags_only:
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tag_cmd += ('--abbrev=0',)
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else:
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tag_cmd += ('--exact',)
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try:
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rev = cmd_output(*tag_cmd)[1].strip()
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except CalledProcessError:
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rev = cmd_output('git', 'rev-parse', 'origin/master')[1].strip()
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# Don't bother trying to update if our sha is the same
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if rev == repo_config['sha']:
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return repo_config
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# Construct a new config with the head sha
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new_config = OrderedDict(repo_config)
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new_config['sha'] = rev
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new_repo = Repository.create(new_config, runner.store)
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# See if any of our hooks were deleted with the new commits
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hooks = {hook['id'] for hook in repo.repo_config['hooks']}
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hooks_missing = hooks - (hooks & set(new_repo.manifest.hooks))
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if hooks_missing:
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raise RepositoryCannotBeUpdatedError(
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'Cannot update because the tip of master is missing these hooks:\n'
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'{}'.format(', '.join(sorted(hooks_missing))),
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)
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return new_config
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SHA_LINE_RE = re.compile(r'^(\s+)sha:(\s*)([^\s#]+)(.*)$', re.DOTALL)
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SHA_LINE_FMT = '{}sha:{}{}{}'
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def _write_new_config_file(path, output):
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original_contents = open(path).read()
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new_contents = ordered_dump(output, **C.YAML_DUMP_KWARGS)
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lines = original_contents.splitlines(True)
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sha_line_indices_rev = list(reversed([
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i for i, line in enumerate(lines) if SHA_LINE_RE.match(line)
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]))
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for line in new_contents.splitlines(True):
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if SHA_LINE_RE.match(line):
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# It's possible we didn't identify the sha lines in the original
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if not sha_line_indices_rev:
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break
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line_index = sha_line_indices_rev.pop()
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original_line = lines[line_index]
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orig_match = SHA_LINE_RE.match(original_line)
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new_match = SHA_LINE_RE.match(line)
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lines[line_index] = SHA_LINE_FMT.format(
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orig_match.group(1), orig_match.group(2),
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new_match.group(3), orig_match.group(4),
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)
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# If we failed to intelligently rewrite the sha lines, fall back to the
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# pretty-formatted yaml output
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to_write = ''.join(lines)
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if ordered_load(to_write) != output:
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to_write = new_contents
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with open(path, 'w') as f:
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f.write(to_write)
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def autoupdate(runner, tags_only):
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"""Auto-update the pre-commit config to the latest versions of repos."""
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retv = 0
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output_configs = []
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changed = False
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input_configs = load_config(runner.config_file_path)
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for repo_config in input_configs:
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if is_local_repo(repo_config):
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output_configs.append(repo_config)
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continue
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output.write('Updating {}...'.format(repo_config['repo']))
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try:
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new_repo_config = _update_repo(repo_config, runner, tags_only)
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except RepositoryCannotBeUpdatedError as error:
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output.write_line(error.args[0])
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output_configs.append(repo_config)
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retv = 1
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continue
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if new_repo_config['sha'] != repo_config['sha']:
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changed = True
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output.write_line('updating {} -> {}.'.format(
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repo_config['sha'], new_repo_config['sha'],
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))
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output_configs.append(new_repo_config)
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else:
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output.write_line('already up to date.')
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output_configs.append(repo_config)
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if changed:
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_write_new_config_file(runner.config_file_path, output_configs)
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return retv
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