184 lines
7.3 KiB
Python
184 lines
7.3 KiB
Python
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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 (built 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-0.12 (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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# these strings are filled in when 'setup.py versioneer' creates _version.py
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tag_prefix = ""
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parentdir_prefix = "wormhole-sync"
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versionfile_source = "src/wormhole/_version.py"
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import os, sys, re, subprocess, errno
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def run_command(commands, args, cwd=None, verbose=False, hide_stderr=False):
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assert isinstance(commands, list)
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p = None
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for c in commands:
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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([c] + args, cwd=cwd, stdout=subprocess.PIPE,
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stderr=(subprocess.PIPE if hide_stderr
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else None))
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break
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except EnvironmentError:
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e = sys.exc_info()[1]
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if e.errno == errno.ENOENT:
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continue
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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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else:
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if verbose:
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print("unable to find command, tried %s" % (commands,))
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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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def versions_from_parentdir(parentdir_prefix, root, verbose=False):
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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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def git_get_keywords(versionfile_abs):
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# the code embedded in _version.py can just fetch the value of these
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# keywords. When used from setup.py, we don't want to import _version.py,
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# so we do it with a regexp instead. This function is not used from
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# _version.py.
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keywords = {}
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try:
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f = open(versionfile_abs,"r")
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for line in f.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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keywords["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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keywords["full"] = mo.group(1)
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f.close()
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except EnvironmentError:
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pass
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return keywords
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def git_versions_from_keywords(keywords, tag_prefix, verbose=False):
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if not keywords:
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return {} # keyword-finding function failed to find keywords
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refnames = keywords["refnames"].strip()
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if refnames.startswith("$Format"):
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if verbose:
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print("keywords 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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# starting in git-1.8.3, tags are listed as "tag: foo-1.0" instead of
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# just "foo-1.0". If we see a "tag: " prefix, prefer those.
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TAG = "tag: "
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tags = set([r[len(TAG):] for r in refs if r.startswith(TAG)])
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if not tags:
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# Either we're using git < 1.8.3, or there really are no tags. We use
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# a heuristic: assume all version tags have a digit. The old git %d
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# expansion behaves like git log --decorate=short and strips out the
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# refs/heads/ and refs/tags/ prefixes that would let us distinguish
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# between branches and tags. By ignoring refnames without digits, we
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# filter out many common branch names like "release" and
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# "stabilization", as well as "HEAD" and "master".
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tags = set([r for r in refs if re.search(r'\d', r)])
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if verbose:
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print("discarding '%s', no digits" % ",".join(refs-tags))
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if verbose:
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print("likely tags: %s" % ",".join(sorted(tags)))
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for ref in sorted(tags):
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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": keywords["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": keywords["full"].strip(),
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"full": keywords["full"].strip() }
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def git_versions_from_vcs(tag_prefix, root, verbose=False):
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# this runs 'git' from the root of the source tree. This only gets called
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# if the git-archive 'subst' keywords were *not* expanded, and
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# _version.py hasn't already been rewritten with a short version string,
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# meaning we're inside a checked out source tree.
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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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GITS = ["git"]
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if sys.platform == "win32":
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GITS = ["git.cmd", "git.exe"]
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stdout = run_command(GITS, ["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(GITS, ["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 get_versions(default={"version": "unknown", "full": ""}, verbose=False):
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# I am in _version.py, which lives at ROOT/VERSIONFILE_SOURCE. If we have
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# __file__, we can work backwards from there to the root. Some
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# py2exe/bbfreeze/non-CPython implementations don't do __file__, in which
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# case we can only use expanded keywords.
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keywords = { "refnames": git_refnames, "full": git_full }
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ver = git_versions_from_keywords(keywords, tag_prefix, verbose)
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if ver:
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return ver
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try:
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root = os.path.abspath(__file__)
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# versionfile_source is the relative path from the top of the source
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# tree (where the .git directory might live) to this file. Invert
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# this to find the root from __file__.
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for i in range(len(versionfile_source.split(os.sep))):
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root = os.path.dirname(root)
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except NameError:
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return default
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return (git_versions_from_vcs(tag_prefix, root, verbose)
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or versions_from_parentdir(parentdir_prefix, root, verbose)
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or default)
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