| Patrick Williams | c0f7c04 | 2017-02-23 20:41:17 -0600 | [diff] [blame^] | 1 | # |
| 2 | # Copyright (C) 2016 Intel Corporation |
| 3 | # |
| 4 | # Released under the MIT license (see COPYING.MIT) |
| 5 | # |
| 6 | """Git repository interactions""" |
| 7 | import os |
| 8 | |
| 9 | from oeqa.utils.commands import runCmd |
| 10 | |
| 11 | |
| 12 | class GitError(Exception): |
| 13 | """Git error handling""" |
| 14 | pass |
| 15 | |
| 16 | class GitRepo(object): |
| 17 | """Class representing a Git repository clone""" |
| 18 | def __init__(self, path, is_topdir=False): |
| 19 | self.top_dir = self._run_git_cmd_at(['rev-parse', '--show-toplevel'], |
| 20 | path) |
| 21 | realpath = os.path.realpath(path) |
| 22 | if is_topdir and realpath != self.top_dir: |
| 23 | raise GitError("{} is not a Git top directory".format(realpath)) |
| 24 | |
| 25 | @staticmethod |
| 26 | def _run_git_cmd_at(git_args, cwd, **kwargs): |
| 27 | """Run git command at a specified directory""" |
| 28 | git_cmd = 'git ' if isinstance(git_args, str) else ['git'] |
| 29 | git_cmd += git_args |
| 30 | ret = runCmd(git_cmd, ignore_status=True, cwd=cwd, **kwargs) |
| 31 | if ret.status: |
| 32 | cmd_str = git_cmd if isinstance(git_cmd, str) \ |
| 33 | else ' '.join(git_cmd) |
| 34 | raise GitError("'{}' failed with exit code {}: {}".format( |
| 35 | cmd_str, ret.status, ret.output)) |
| 36 | return ret.output.strip() |
| 37 | |
| 38 | @staticmethod |
| 39 | def init(path): |
| 40 | """Initialize a new Git repository""" |
| 41 | GitRepo._run_git_cmd_at('init', cwd=path) |
| 42 | return GitRepo(path, is_topdir=True) |
| 43 | |
| 44 | def run_cmd(self, git_args, env_update=None): |
| 45 | """Run Git command""" |
| 46 | env = None |
| 47 | if env_update: |
| 48 | env = os.environ.copy() |
| 49 | env.update(env_update) |
| 50 | return self._run_git_cmd_at(git_args, self.top_dir, env=env) |
| 51 | |
| 52 | def rev_parse(self, revision): |
| 53 | """Do git rev-parse""" |
| 54 | try: |
| 55 | return self.run_cmd(['rev-parse', revision]) |
| 56 | except GitError: |
| 57 | # Revision does not exist |
| 58 | return None |
| 59 | |
| 60 | def get_current_branch(self): |
| 61 | """Get current branch""" |
| 62 | try: |
| 63 | # Strip 11 chars, i.e. 'refs/heads' from the beginning |
| 64 | return self.run_cmd(['symbolic-ref', 'HEAD'])[11:] |
| 65 | except GitError: |
| 66 | return None |
| 67 | |
| 68 | |