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| # Copyright (c) OpenMMLab. All rights reserved. | |
| import os | |
| import subprocess | |
| import warnings | |
| from packaging.version import parse | |
| def digit_version(version_str: str, length: int = 4): | |
| """Convert a version string into a tuple of integers. | |
| This method is usually used for comparing two versions. For pre-release | |
| versions: alpha < beta < rc. | |
| Args: | |
| version_str (str): The version string. | |
| length (int): The maximum number of version levels. Default: 4. | |
| Returns: | |
| tuple[int]: The version info in digits (integers). | |
| """ | |
| assert 'parrots' not in version_str | |
| version = parse(version_str) | |
| assert version.release, f'failed to parse version {version_str}' | |
| release = list(version.release) | |
| release = release[:length] | |
| if len(release) < length: | |
| release = release + [0] * (length - len(release)) | |
| if version.is_prerelease: | |
| mapping = {'a': -3, 'b': -2, 'rc': -1} | |
| val = -4 | |
| # version.pre can be None | |
| if version.pre: | |
| if version.pre[0] not in mapping: | |
| warnings.warn(f'unknown prerelease version {version.pre[0]}, ' | |
| 'version checking may go wrong') | |
| else: | |
| val = mapping[version.pre[0]] | |
| release.extend([val, version.pre[-1]]) | |
| else: | |
| release.extend([val, 0]) | |
| elif version.is_postrelease: | |
| release.extend([1, version.post]) | |
| else: | |
| release.extend([0, 0]) | |
| return tuple(release) | |
| def _minimal_ext_cmd(cmd): | |
| # construct minimal environment | |
| env = {} | |
| for k in ['SYSTEMROOT', 'PATH', 'HOME']: | |
| v = os.environ.get(k) | |
| if v is not None: | |
| env[k] = v | |
| # LANGUAGE is used on win32 | |
| env['LANGUAGE'] = 'C' | |
| env['LANG'] = 'C' | |
| env['LC_ALL'] = 'C' | |
| out = subprocess.Popen( | |
| cmd, stdout=subprocess.PIPE, env=env).communicate()[0] | |
| return out | |
| def get_git_hash(fallback='unknown', digits=None): | |
| """Get the git hash of the current repo. | |
| Args: | |
| fallback (str, optional): The fallback string when git hash is | |
| unavailable. Defaults to 'unknown'. | |
| digits (int, optional): kept digits of the hash. Defaults to None, | |
| meaning all digits are kept. | |
| Returns: | |
| str: Git commit hash. | |
| """ | |
| if digits is not None and not isinstance(digits, int): | |
| raise TypeError('digits must be None or an integer') | |
| try: | |
| out = _minimal_ext_cmd(['git', 'rev-parse', 'HEAD']) | |
| sha = out.strip().decode('ascii') | |
| if digits is not None: | |
| sha = sha[:digits] | |
| except OSError: | |
| sha = fallback | |
| return sha | |