mirror of
https://github.com/openSUSE/osc.git
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76 lines
2.2 KiB
Python
76 lines
2.2 KiB
Python
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import os
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import subprocess
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def get_git_archive_version():
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"""
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Return version that is set by git during `git archive`.
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The returned format is equal to what `git describe --tags` returns.
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"""
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# the `version` variable contents get substituted during `git archive`
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# it requires adding this to .gitattributes: <path to this file> export-subst
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version = "$Format:%(describe:tags=true)$"
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if version.startswith("$"):
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# version hasn't been substituted during `git archive`
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return None
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return version
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def get_git_version():
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"""
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Determine version from git repo by calling `git describe --tags`.
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"""
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cmd = ["git", "describe", "--tags"]
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# run the command from the place where this file is placed
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# to ensure that we're in a git repo
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cwd = os.path.dirname(__file__)
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proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, cwd=cwd)
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stdout, _ = proc.communicate()
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if proc.returncode != 0:
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return None
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version = stdout.strip().decode("utf-8")
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return version
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def get_version(version):
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"""
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Get the most relevant version of the software:
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1. the version set during `git archive`
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2. the version from the git tags by calling `git describe --tags`
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3. the version explicitly specified in the source code
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The version conforms PEP 440.
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"""
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# use version from the archive
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git_version = get_git_archive_version()
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# use version from the git repo
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if not git_version:
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git_version = get_git_version()
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# unable to determine version from git
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if not git_version:
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return version
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if "-" not in git_version:
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git_tag = git_version
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git_commits = None
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git_hash = None
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else:
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git_tag, git_commits, git_hash = git_version.rsplit("-", 2)
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git_commits = int(git_commits)
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# remove the 'g' prefix from hash
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git_hash = git_hash[1:]
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if version and git_tag != version:
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msg = "Git tag '{}' doesn't correspond with version '{}' specified in the source code".format(git_tag, version)
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raise ValueError(msg)
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result = git_tag
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if git_hash:
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result += "+{}.git.{}".format(git_commits, git_hash)
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return result
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