mirror of
https://github.com/borgbackup/borg.git
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198 lines
7.8 KiB
Python
198 lines
7.8 KiB
Python
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IN_LONG_VERSION_PY = True
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# This file helps to compute a version number in source trees obtained from
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# git-archive tarball (such as those provided by githubs download-from-tag
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# feature). Distribution tarballs (build by setup.py sdist) and build
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# directories (produced by setup.py build) will contain a much shorter file
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# that just contains the computed version number.
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# This file is released into the public domain. Generated by
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# versioneer-0.7+ (https://github.com/warner/python-versioneer)
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# these strings will be replaced by git during git-archive
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git_refnames = "$Format:%d$"
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git_full = "$Format:%H$"
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import subprocess
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import sys
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def run_command(args, cwd=None, verbose=False):
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try:
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# remember shell=False, so use git.cmd on windows, not just git
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p = subprocess.Popen(args, stdout=subprocess.PIPE, cwd=cwd)
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except EnvironmentError:
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e = sys.exc_info()[1]
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if verbose:
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print("unable to run %s" % args[0])
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print(e)
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return None
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stdout = p.communicate()[0].strip()
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if sys.version >= '3':
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stdout = stdout.decode()
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if p.returncode != 0:
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if verbose:
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print("unable to run %s (error)" % args[0])
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return None
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return stdout
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import sys
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import re
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import os.path
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def get_expanded_variables(versionfile_source):
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# the code embedded in _version.py can just fetch the value of these
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# variables. When used from setup.py, we don't want to import
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# _version.py, so we do it with a regexp instead. This function is not
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# used from _version.py.
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variables = {}
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try:
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for line in open(versionfile_source,"r").readlines():
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if line.strip().startswith("git_refnames ="):
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mo = re.search(r'=\s*"(.*)"', line)
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if mo:
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variables["refnames"] = mo.group(1)
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if line.strip().startswith("git_full ="):
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mo = re.search(r'=\s*"(.*)"', line)
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if mo:
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variables["full"] = mo.group(1)
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except EnvironmentError:
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pass
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return variables
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def versions_from_expanded_variables(variables, tag_prefix, verbose=False):
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refnames = variables["refnames"].strip()
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if refnames.startswith("$Format"):
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if verbose:
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print("variables are unexpanded, not using")
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return {} # unexpanded, so not in an unpacked git-archive tarball
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refs = set([r.strip() for r in refnames.strip("()").split(",")])
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for ref in list(refs):
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if not re.search(r'\d', ref):
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if verbose:
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print("discarding '%s', no digits" % ref)
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refs.discard(ref)
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# Assume all version tags have a digit. git's %d expansion
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# behaves like git log --decorate=short and strips out the
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# refs/heads/ and refs/tags/ prefixes that would let us
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# distinguish between branches and tags. By ignoring refnames
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# without digits, we filter out many common branch names like
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# "release" and "stabilization", as well as "HEAD" and "master".
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if verbose:
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print("remaining refs: %s" % ",".join(sorted(refs)))
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for ref in sorted(refs):
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# sorting will prefer e.g. "2.0" over "2.0rc1"
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if ref.startswith(tag_prefix):
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r = ref[len(tag_prefix):]
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if verbose:
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print("picking %s" % r)
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return { "version": r,
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"full": variables["full"].strip() }
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# no suitable tags, so we use the full revision id
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if verbose:
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print("no suitable tags, using full revision id")
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return { "version": variables["full"].strip(),
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"full": variables["full"].strip() }
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def versions_from_vcs(tag_prefix, versionfile_source, verbose=False):
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# this runs 'git' from the root of the source tree. That either means
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# someone ran a setup.py command (and this code is in versioneer.py, so
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# IN_LONG_VERSION_PY=False, thus the containing directory is the root of
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# the source tree), or someone ran a project-specific entry point (and
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# this code is in _version.py, so IN_LONG_VERSION_PY=True, thus the
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# containing directory is somewhere deeper in the source tree). This only
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# gets called if the git-archive 'subst' variables were *not* expanded,
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# and _version.py hasn't already been rewritten with a short version
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# string, meaning we're inside a checked out source tree.
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try:
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here = os.path.abspath(__file__)
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except NameError:
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# some py2exe/bbfreeze/non-CPython implementations don't do __file__
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return {} # not always correct
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# versionfile_source is the relative path from the top of the source tree
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# (where the .git directory might live) to this file. Invert this to find
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# the root from __file__.
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root = here
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if IN_LONG_VERSION_PY:
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for i in range(len(versionfile_source.split("/"))):
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root = os.path.dirname(root)
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else:
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root = os.path.dirname(here)
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if not os.path.exists(os.path.join(root, ".git")):
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if verbose:
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print("no .git in %s" % root)
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return {}
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GIT = "git"
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if sys.platform == "win32":
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GIT = "git.cmd"
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stdout = run_command([GIT, "describe", "--tags", "--dirty", "--always"],
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cwd=root)
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if stdout is None:
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return {}
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if not stdout.startswith(tag_prefix):
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if verbose:
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print("tag '%s' doesn't start with prefix '%s'" % (stdout, tag_prefix))
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return {}
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tag = stdout[len(tag_prefix):]
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stdout = run_command([GIT, "rev-parse", "HEAD"], cwd=root)
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if stdout is None:
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return {}
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full = stdout.strip()
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if tag.endswith("-dirty"):
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full += "-dirty"
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return {"version": tag, "full": full}
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def versions_from_parentdir(parentdir_prefix, versionfile_source, verbose=False):
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if IN_LONG_VERSION_PY:
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# We're running from _version.py. If it's from a source tree
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# (execute-in-place), we can work upwards to find the root of the
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# tree, and then check the parent directory for a version string. If
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# it's in an installed application, there's no hope.
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try:
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here = os.path.abspath(__file__)
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except NameError:
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# py2exe/bbfreeze/non-CPython don't have __file__
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return {} # without __file__, we have no hope
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# versionfile_source is the relative path from the top of the source
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# tree to _version.py. Invert this to find the root from __file__.
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root = here
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for i in range(len(versionfile_source.split("/"))):
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root = os.path.dirname(root)
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else:
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# we're running from versioneer.py, which means we're running from
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# the setup.py in a source tree. sys.argv[0] is setup.py in the root.
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here = os.path.abspath(sys.argv[0])
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root = os.path.dirname(here)
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# Source tarballs conventionally unpack into a directory that includes
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# both the project name and a version string.
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dirname = os.path.basename(root)
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if not dirname.startswith(parentdir_prefix):
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if verbose:
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print("guessing rootdir is '%s', but '%s' doesn't start with prefix '%s'" %
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(root, dirname, parentdir_prefix))
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return None
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return {"version": dirname[len(parentdir_prefix):], "full": ""}
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tag_prefix = ""
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parentdir_prefix = "Attic-"
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versionfile_source = "attic/_version.py"
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def get_versions(default={"version": "unknown", "full": ""}, verbose=False):
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variables = { "refnames": git_refnames, "full": git_full }
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ver = versions_from_expanded_variables(variables, tag_prefix, verbose)
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if not ver:
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ver = versions_from_vcs(tag_prefix, versionfile_source, verbose)
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if not ver:
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ver = versions_from_parentdir(parentdir_prefix, versionfile_source,
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verbose)
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if not ver:
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ver = default
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return ver
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