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"""Utilities to call Git commands.""" |
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import os |
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import logging |
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from . import common |
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from .shell import call |
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log = logging.getLogger(__name__) |
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def git(*args, **kwargs): |
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return call('git', *args, **kwargs) |
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def clone(repo, path, *, cache=None): |
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"""Clone a new Git repository.""" |
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cache = cache or os.path.expanduser("~/.gitcache") |
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name = repo.split('/')[-1] |
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if name.endswith(".git"): |
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name = name[:-4] |
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reference = os.path.join(cache, name + ".reference") |
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if not os.path.isdir(reference): |
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git('clone', '--mirror', repo, reference) |
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git('clone', '--reference', reference, repo, path) |
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def fetch(repo, rev=None): |
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"""Fetch the latest changes from the remote repository.""" |
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git('remote', 'rm', 'origin', _show=False, _ignore=True) |
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git('remote', 'add', 'origin', repo) |
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args = ['fetch', '--tags', '--force', '--prune', 'origin'] |
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if rev: |
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if len(rev) == 40: |
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pass # fetch only works with a SHA if already present locally |
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elif '@' in rev: |
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pass # fetch doesn't work with rev-parse |
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else: |
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args.append(rev) |
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git(*args) |
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def changes(include_untracked=False, display_status=True, _show=False): |
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"""Determine if there are changes in the working tree.""" |
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status = False |
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try: |
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# refresh changes |
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git('update-index', '-q', '--refresh', _show=False) |
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# check for uncommitted changes |
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git('diff-index', '--quiet', 'HEAD', _show=_show) |
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# check for untracked files |
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output = git('ls-files', '--others', '--exclude-standard', |
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_show=_show, _capture=True) |
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except common.CallException: |
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status = True |
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else: |
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status = bool(output.splitlines()) and include_untracked |
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if status and display_status: |
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for line in git('status', _show=True, _capture=True).splitlines(): |
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common.show(line) |
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return status |
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def update(rev, *, clean=True, fetch=False): # pylint: disable=redefined-outer-name |
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"""Update the working tree to the specified revision.""" |
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hide = {'_show': False, '_ignore': True} |
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git('stash', **hide) |
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if clean: |
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git('clean', '--force', '-d', '-x', _show=False) |
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rev = _get_sha_from_rev(rev) |
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git('checkout', '--force', rev) |
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git('branch', '--set-upstream-to', 'origin/' + rev, **hide) |
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86
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if fetch: |
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# if `rev` was a branch it might be tracking something older |
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git('pull', '--ff-only', '--no-rebase', **hide) |
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90
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def get_url(): |
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"""Get the current repository's URL.""" |
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return git('config', '--get', 'remote.origin.url', |
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_show=False, _capture=True) |
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def get_hash(_show=False): |
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"""Get the current working tree's hash.""" |
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return git('rev-parse', 'HEAD', _show=_show, _capture=True) |
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102
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103
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def get_tag(): |
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"""Get the current working tree's tag (if on a tag).""" |
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return git('describe', '--tags', '--exact-match', |
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_show=False, _ignore=True, _capture=True) |
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108
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def get_branch(): |
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"""Get the current working tree's branch.""" |
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return git('rev-parse', '--abbrev-ref', 'HEAD', |
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_show=False, _capture=True) |
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114
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def _get_sha_from_rev(rev): |
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"""Get a rev-parse string's hash.""" |
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if '@{' in rev: # TODO: use regex for this |
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parts = rev.split('@') |
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branch = parts[0] |
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date = parts[1].strip("{}") |
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git('checkout', '--force', branch, _show=False) |
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rev = git('rev-list', '-n', '1', '--before={!r}'.format(date), |
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branch, _show=False, _capture=True) |
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return rev |
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jacebrowning /
gdm
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The coding style of this project requires that you add a docstring to this code element. Below, you find an example for methods:
If you would like to know more about docstrings, we recommend to read PEP-257: Docstring Conventions.