461 lines
15 KiB
Python
461 lines
15 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-0.15 (https://github.com/warner/python-versioneer)
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import errno
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import os
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import re
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import subprocess
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import sys
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def get_keywords():
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# these strings will be replaced by git during git-archive.
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# setup.py/versioneer.py will grep for the variable names, so they must
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# each be defined on a line of their own. _version.py will just call
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# get_keywords().
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git_refnames = "$Format:%d$"
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git_full = "$Format:%H$"
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keywords = {"refnames": git_refnames, "full": git_full}
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return keywords
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class VersioneerConfig:
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pass
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def get_config():
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# these strings are filled in when 'setup.py versioneer' creates
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# _version.py
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cfg = VersioneerConfig()
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cfg.VCS = "git"
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cfg.style = "pep440"
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cfg.tag_prefix = ""
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cfg.parentdir_prefix = "pg8000-"
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cfg.versionfile_source = "pg8000/_version.py"
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cfg.verbose = False
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return cfg
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class NotThisMethod(Exception):
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pass
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LONG_VERSION_PY = {}
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HANDLERS = {}
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def register_vcs_handler(vcs, method): # decorator
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def decorate(f):
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if vcs not in HANDLERS:
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HANDLERS[vcs] = {}
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HANDLERS[vcs][method] = f
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return f
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return decorate
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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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dispcmd = str([c] + args)
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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" % dispcmd)
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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_info[0] >= 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)" % dispcmd)
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return None
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return stdout
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def versions_from_parentdir(parentdir_prefix, root, verbose):
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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 "
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"prefix '%s'" % (root, dirname, parentdir_prefix))
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raise NotThisMethod("rootdir doesn't start with parentdir_prefix")
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return {"version": dirname[len(parentdir_prefix):],
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"full-revisionid": None,
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"dirty": False, "error": None}
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@register_vcs_handler("git", "get_keywords")
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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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@register_vcs_handler("git", "keywords")
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def git_versions_from_keywords(keywords, tag_prefix, verbose):
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if not keywords:
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raise NotThisMethod("no keywords at all, weird")
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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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raise NotThisMethod("unexpanded keywords, not a 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-revisionid": keywords["full"].strip(),
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"dirty": False, "error": None
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}
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# no suitable tags, so version is "0+unknown", but full hex is still there
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if verbose:
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print("no suitable tags, using unknown + full revision id")
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return {"version": "0+unknown",
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"full-revisionid": keywords["full"].strip(),
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"dirty": False, "error": "no suitable tags"}
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@register_vcs_handler("git", "pieces_from_vcs")
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def git_pieces_from_vcs(tag_prefix, root, verbose, run_command=run_command):
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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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raise NotThisMethod("no .git directory")
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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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# if there is a tag, this yields TAG-NUM-gHEX[-dirty]
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# if there are no tags, this yields HEX[-dirty] (no NUM)
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describe_out = run_command(GITS, ["describe", "--tags", "--dirty",
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"--always", "--long"],
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cwd=root)
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# --long was added in git-1.5.5
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if describe_out is None:
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raise NotThisMethod("'git describe' failed")
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describe_out = describe_out.strip()
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full_out = run_command(GITS, ["rev-parse", "HEAD"], cwd=root)
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if full_out is None:
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raise NotThisMethod("'git rev-parse' failed")
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full_out = full_out.strip()
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pieces = {}
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pieces["long"] = full_out
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pieces["short"] = full_out[:7] # maybe improved later
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pieces["error"] = None
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# parse describe_out. It will be like TAG-NUM-gHEX[-dirty] or HEX[-dirty]
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# TAG might have hyphens.
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git_describe = describe_out
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# look for -dirty suffix
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dirty = git_describe.endswith("-dirty")
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pieces["dirty"] = dirty
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if dirty:
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git_describe = git_describe[:git_describe.rindex("-dirty")]
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# now we have TAG-NUM-gHEX or HEX
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if "-" in git_describe:
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# TAG-NUM-gHEX
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mo = re.search(r'^(.+)-(\d+)-g([0-9a-f]+)$', git_describe)
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if not mo:
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# unparseable. Maybe git-describe is misbehaving?
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pieces["error"] = ("unable to parse git-describe output: '%s'"
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% describe_out)
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return pieces
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# tag
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full_tag = mo.group(1)
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if not full_tag.startswith(tag_prefix):
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if verbose:
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fmt = "tag '%s' doesn't start with prefix '%s'"
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print(fmt % (full_tag, tag_prefix))
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pieces["error"] = ("tag '%s' doesn't start with prefix '%s'"
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% (full_tag, tag_prefix))
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return pieces
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pieces["closest-tag"] = full_tag[len(tag_prefix):]
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# distance: number of commits since tag
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pieces["distance"] = int(mo.group(2))
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# commit: short hex revision ID
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pieces["short"] = mo.group(3)
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else:
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# HEX: no tags
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pieces["closest-tag"] = None
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count_out = run_command(GITS, ["rev-list", "HEAD", "--count"],
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cwd=root)
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pieces["distance"] = int(count_out) # total number of commits
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return pieces
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def plus_or_dot(pieces):
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if "+" in pieces.get("closest-tag", ""):
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return "."
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return "+"
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def render_pep440(pieces):
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# now build up version string, with post-release "local version
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# identifier". Our goal: TAG[+DISTANCE.gHEX[.dirty]] . Note that if you
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# get a tagged build and then dirty it, you'll get TAG+0.gHEX.dirty
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# exceptions:
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# 1: no tags. git_describe was just HEX. 0+untagged.DISTANCE.gHEX[.dirty]
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if pieces["closest-tag"]:
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rendered = pieces["closest-tag"]
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if pieces["distance"] or pieces["dirty"]:
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rendered += plus_or_dot(pieces)
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rendered += "%d.g%s" % (pieces["distance"], pieces["short"])
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if pieces["dirty"]:
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rendered += ".dirty"
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else:
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# exception #1
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rendered = "0+untagged.%d.g%s" % (pieces["distance"],
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pieces["short"])
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if pieces["dirty"]:
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rendered += ".dirty"
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return rendered
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def render_pep440_pre(pieces):
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# TAG[.post.devDISTANCE] . No -dirty
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# exceptions:
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# 1: no tags. 0.post.devDISTANCE
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if pieces["closest-tag"]:
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rendered = pieces["closest-tag"]
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if pieces["distance"]:
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rendered += ".post.dev%d" % pieces["distance"]
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else:
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# exception #1
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rendered = "0.post.dev%d" % pieces["distance"]
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return rendered
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def render_pep440_post(pieces):
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# TAG[.postDISTANCE[.dev0]+gHEX] . The ".dev0" means dirty. Note that
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# .dev0 sorts backwards (a dirty tree will appear "older" than the
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# corresponding clean one), but you shouldn't be releasing software with
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# -dirty anyways.
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# exceptions:
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# 1: no tags. 0.postDISTANCE[.dev0]
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if pieces["closest-tag"]:
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rendered = pieces["closest-tag"]
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if pieces["distance"] or pieces["dirty"]:
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rendered += ".post%d" % pieces["distance"]
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if pieces["dirty"]:
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rendered += ".dev0"
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rendered += plus_or_dot(pieces)
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rendered += "g%s" % pieces["short"]
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else:
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# exception #1
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rendered = "0.post%d" % pieces["distance"]
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if pieces["dirty"]:
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rendered += ".dev0"
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rendered += "+g%s" % pieces["short"]
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return rendered
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def render_pep440_old(pieces):
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# TAG[.postDISTANCE[.dev0]] . The ".dev0" means dirty.
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# exceptions:
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# 1: no tags. 0.postDISTANCE[.dev0]
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if pieces["closest-tag"]:
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rendered = pieces["closest-tag"]
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if pieces["distance"] or pieces["dirty"]:
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rendered += ".post%d" % pieces["distance"]
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if pieces["dirty"]:
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rendered += ".dev0"
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else:
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# exception #1
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rendered = "0.post%d" % pieces["distance"]
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if pieces["dirty"]:
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rendered += ".dev0"
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return rendered
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def render_git_describe(pieces):
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# TAG[-DISTANCE-gHEX][-dirty], like 'git describe --tags --dirty
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# --always'
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# exceptions:
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# 1: no tags. HEX[-dirty] (note: no 'g' prefix)
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if pieces["closest-tag"]:
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rendered = pieces["closest-tag"]
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if pieces["distance"]:
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rendered += "-%d-g%s" % (pieces["distance"], pieces["short"])
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else:
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# exception #1
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rendered = pieces["short"]
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if pieces["dirty"]:
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rendered += "-dirty"
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return rendered
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def render_git_describe_long(pieces):
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# TAG-DISTANCE-gHEX[-dirty], like 'git describe --tags --dirty
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# --always -long'. The distance/hash is unconditional.
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# exceptions:
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# 1: no tags. HEX[-dirty] (note: no 'g' prefix)
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if pieces["closest-tag"]:
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rendered = pieces["closest-tag"]
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rendered += "-%d-g%s" % (pieces["distance"], pieces["short"])
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else:
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# exception #1
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rendered = pieces["short"]
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if pieces["dirty"]:
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rendered += "-dirty"
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return rendered
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def render(pieces, style):
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if pieces["error"]:
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return {"version": "unknown",
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"full-revisionid": pieces.get("long"),
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"dirty": None,
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"error": pieces["error"]}
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if not style or style == "default":
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style = "pep440" # the default
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if style == "pep440":
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rendered = render_pep440(pieces)
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elif style == "pep440-pre":
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rendered = render_pep440_pre(pieces)
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elif style == "pep440-post":
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rendered = render_pep440_post(pieces)
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elif style == "pep440-old":
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rendered = render_pep440_old(pieces)
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elif style == "git-describe":
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rendered = render_git_describe(pieces)
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elif style == "git-describe-long":
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rendered = render_git_describe_long(pieces)
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else:
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raise ValueError("unknown style '%s'" % style)
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return {"version": rendered, "full-revisionid": pieces["long"],
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"dirty": pieces["dirty"], "error": None}
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def get_versions():
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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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cfg = get_config()
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verbose = cfg.verbose
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try:
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return git_versions_from_keywords(get_keywords(), cfg.tag_prefix,
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verbose)
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except NotThisMethod:
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pass
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try:
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root = os.path.realpath(__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 cfg.versionfile_source.split('/'):
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root = os.path.dirname(root)
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except NameError:
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return {"version": "0+unknown", "full-revisionid": None,
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"dirty": None,
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"error": "unable to find root of source tree"}
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try:
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pieces = git_pieces_from_vcs(cfg.tag_prefix, root, verbose)
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return render(pieces, cfg.style)
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except NotThisMethod:
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pass
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try:
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if cfg.parentdir_prefix:
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return versions_from_parentdir(cfg.parentdir_prefix, root, verbose)
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except NotThisMethod:
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pass
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return {"version": "0+unknown", "full-revisionid": None,
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"dirty": None,
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"error": "unable to compute version"}
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