81 lines
2.6 KiB
Python
81 lines
2.6 KiB
Python
#
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# Copyright (C) 2016 Intel Corporation
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#
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# Released under the MIT license (see COPYING.MIT)
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#
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"""Git repository interactions"""
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import os
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from oeqa.utils.commands import runCmd
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class GitError(Exception):
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"""Git error handling"""
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pass
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class GitRepo(object):
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"""Class representing a Git repository clone"""
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def __init__(self, path, is_topdir=False):
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git_dir = self._run_git_cmd_at(['rev-parse', '--git-dir'], path)
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git_dir = git_dir if os.path.isabs(git_dir) else os.path.join(path, git_dir)
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self.git_dir = os.path.realpath(git_dir)
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if self._run_git_cmd_at(['rev-parse', '--is-bare-repository'], path) == 'true':
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self.bare = True
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self.top_dir = self.git_dir
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else:
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self.bare = False
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self.top_dir = self._run_git_cmd_at(['rev-parse', '--show-toplevel'],
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path)
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realpath = os.path.realpath(path)
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if is_topdir and realpath != self.top_dir:
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raise GitError("{} is not a Git top directory".format(realpath))
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@staticmethod
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def _run_git_cmd_at(git_args, cwd, **kwargs):
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"""Run git command at a specified directory"""
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git_cmd = 'git ' if isinstance(git_args, str) else ['git']
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git_cmd += git_args
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ret = runCmd(git_cmd, ignore_status=True, cwd=cwd, **kwargs)
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if ret.status:
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cmd_str = git_cmd if isinstance(git_cmd, str) \
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else ' '.join(git_cmd)
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raise GitError("'{}' failed with exit code {}: {}".format(
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cmd_str, ret.status, ret.output))
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return ret.output.strip()
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@staticmethod
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def init(path, bare=False):
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"""Initialize a new Git repository"""
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cmd = ['init']
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if bare:
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cmd.append('--bare')
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GitRepo._run_git_cmd_at(cmd, cwd=path)
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return GitRepo(path, is_topdir=True)
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def run_cmd(self, git_args, env_update=None):
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"""Run Git command"""
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env = None
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if env_update:
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env = os.environ.copy()
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env.update(env_update)
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return self._run_git_cmd_at(git_args, self.top_dir, env=env)
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def rev_parse(self, revision):
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"""Do git rev-parse"""
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try:
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return self.run_cmd(['rev-parse', '--verify', revision])
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except GitError:
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# Revision does not exist
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return None
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def get_current_branch(self):
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"""Get current branch"""
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try:
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# Strip 11 chars, i.e. 'refs/heads' from the beginning
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return self.run_cmd(['symbolic-ref', 'HEAD'])[11:]
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except GitError:
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return None
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