render() - Code Metrics - Inspection of "Merge pull request #50 from goanpeca/feature/versi..." - spyder-ide/loghub - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( ba6c11...23b579 )

by Gonzalo

created 2017-01-17 01:09 UTC

render() F

↳ Parent: Project

Complexity

Conditions

Size

Total Lines

Duplication

Lines	11
Ratio	31.43 %

Importance

Changes	3
Bugs	0	Features	0

Metric	Value
cc	10
c	3
b	0
f	0
dl	11
loc	35
rs	3.1304

How to fix Complexity

# This file helps to compute a version number in source trees obtained from
# git-archive tarball (such as those provided by githubs download-from-tag
# feature). Distribution tarballs (built by setup.py sdist) and build
# directories (produced by setup.py build) will contain a much shorter file
# that just contains the computed version number.

# This file is released into the public domain. Generated by
# versioneer-0.18 (https://github.com/warner/python-versioneer)
"""Git implementation of _version.py."""

# Standard library imports
import errno
import os
import re
import subprocess
import sys


def get_keywords():
    """Get the keywords needed to look up the version information."""
    # these strings will be replaced by git during git-archive.
    # setup.py/versioneer.py will grep for the variable names, so they must
    # each be defined on a line of their own. _version.py will just call
    # get_keywords().
    git_refnames = "$Format:%d$"
    git_full = "$Format:%H$"
    git_date = "$Format:%ci$"
    keywords = {"refnames": git_refnames, "full": git_full, "date": git_date}
    return keywords


class VersioneerConfig:
    """Container for Versioneer configuration parameters."""


def get_config():
    """Create, populate and return the VersioneerConfig() object."""
    # these strings are filled in when 'setup.py versioneer' creates
    # _version.py
    cfg = VersioneerConfig()
    cfg.VCS = "git"
    cfg.style = "pep440"
    cfg.tag_prefix = "v"
    cfg.parentdir_prefix = "None"
    cfg.versionfile_source = "loghub/_version.py"
    cfg.verbose = False
    return cfg


class NotThisMethod(Exception):
    """Exception raised if a method is not valid for the current scenario."""


LONG_VERSION_PY = {}
HANDLERS = {}


def register_vcs_handler(vcs, method):  # decorator
    """Decorator to mark a method as the handler for a particular VCS."""

    def decorate(f):
        """Store f in HANDLERS[vcs][method]."""
        if vcs not in HANDLERS:
            HANDLERS[vcs] = {}
        HANDLERS[vcs][method] = f
        return f

    return decorate



def run_command(commands,
                args,
                cwd=None,
                verbose=False,
                hide_stderr=False,
                env=None):
    """Call the given command(s)."""
    assert isinstance(commands, list)
    p = None
    for c in commands:
        try:
            dispcmd = str([c] + args)
            # remember shell=False, so use git.cmd on windows, not just git
            p = subprocess.Popen(
                [c] + args,
                cwd=cwd,
                env=env,
                stdout=subprocess.PIPE,
                stderr=(subprocess.PIPE if hide_stderr else None))
            break
        except EnvironmentError:
            e = sys.exc_info()[1]
            if e.errno == errno.ENOENT:
                continue
            if verbose:
                print("unable to run %s" % dispcmd)
                print(e)
            return None, None
    else:
        if verbose:
            print("unable to find command, tried %s" % (commands, ))
        return None, None
    stdout = p.communicate()[0].strip()
    if sys.version_info[0] >= 3:
        stdout = stdout.decode()
    if p.returncode != 0:
        if verbose:

            print("unable to run %s (error)" % dispcmd)
            print("stdout was %s" % stdout)
        return None, p.returncode
    return stdout, p.returncode


def versions_from_parentdir(parentdir_prefix, root, verbose):
    """Try to determine the version from the parent directory name.

    Source tarballs conventionally unpack into a directory that includes both
    the project name and a version string. We will also support searching up
    two directory levels for an appropriately named parent directory
    """
    rootdirs = []

    for i in range(3):
        dirname = os.path.basename(root)
        if dirname.startswith(parentdir_prefix):
            return {
                "version": dirname[len(parentdir_prefix):],
                "full-revisionid": None,
                "dirty": False,
                "error": None,
                "date": None
            }

        else:
            rootdirs.append(root)
            root = os.path.dirname(root)  # up a level

    if verbose:
        print("Tried directories %s but none started with prefix %s" %
              (str(rootdirs), parentdir_prefix))
    raise NotThisMethod("rootdir doesn't start with parentdir_prefix")


@register_vcs_handler("git", "get_keywords")
def git_get_keywords(versionfile_abs):
    """Extract version information from the given file."""
    # the code embedded in _version.py can just fetch the value of these
    # keywords. When used from setup.py, we don't want to import _version.py,
    # so we do it with a regexp instead. This function is not used from
    # _version.py.
    keywords = {}
    try:
        f = open(versionfile_abs, "r")
        for line in f.readlines():
            if line.strip().startswith("git_refnames ="):
                mo = re.search(r'=\s*"(.*)"', line)
                if mo:
                    keywords["refnames"] = mo.group(1)
            if line.strip().startswith("git_full ="):
                mo = re.search(r'=\s*"(.*)"', line)
                if mo:
                    keywords["full"] = mo.group(1)

            if line.strip().startswith("git_date ="):
                mo = re.search(r'=\s*"(.*)"', line)
                if mo:
                    keywords["date"] = mo.group(1)
        f.close()
    except EnvironmentError:
        pass
    return keywords


@register_vcs_handler("git", "keywords")
def git_versions_from_keywords(keywords, tag_prefix, verbose):
    """Get version information from git keywords."""
    if not keywords:
        raise NotThisMethod("no keywords at all, weird")
    date = keywords.get("date")
    if date is not None:
        # git-2.2.0 added "%cI", which expands to an ISO-8601 -compliant
        # datestamp. However we prefer "%ci" (which expands to an "ISO-8601
        # -like" string, which we must then edit to make compliant), because
        # it's been around since git-1.5.3, and it's too difficult to
        # discover which version we're using, or to work around using an
        # older one.
        date = date.strip().replace(" ", "T", 1).replace(" ", "", 1)
    refnames = keywords["refnames"].strip()
    if refnames.startswith("$Format"):
        if verbose:
            print("keywords are unexpanded, not using")
        raise NotThisMethod("unexpanded keywords, not a git-archive tarball")
    refs = set([r.strip() for r in refnames.strip("()").split(",")])
    # starting in git-1.8.3, tags are listed as "tag: foo-1.0" instead of
    # just "foo-1.0". If we see a "tag: " prefix, prefer those.
    TAG = "tag: "
    tags = set([r[len(TAG):] for r in refs if r.startswith(TAG)])
    if not tags:
        # Either we're using git < 1.8.3, or there really are no tags. We use
        # a heuristic: assume all version tags have a digit. The old git %d
        # expansion behaves like git log --decorate=short and strips out the
        # refs/heads/ and refs/tags/ prefixes that would let us distinguish
        # between branches and tags. By ignoring refnames without digits, we
        # filter out many common branch names like "release" and
        # "stabilization", as well as "HEAD" and "master".
        tags = set([r for r in refs if re.search(r'\d', r)])
        if verbose:
            print("discarding '%s', no digits" % ",".join(refs - tags))
    if verbose:
        print("likely tags: %s" % ",".join(sorted(tags)))
    for ref in sorted(tags):
        # sorting will prefer e.g. "2.0" over "2.0rc1"
        if ref.startswith(tag_prefix):
            r = ref[len(tag_prefix):]
            if verbose:
                print("picking %s" % r)
            return {
                "version": r,

                "full-revisionid": keywords["full"].strip(),
                "dirty": False,
                "error": None,
                "date": date
            }
    # no suitable tags, so version is "0+unknown", but full hex is still there
    if verbose:
        print("no suitable tags, using unknown + full revision id")
    return {
        "version": "0+unknown",
        "full-revisionid": keywords["full"].strip(),
        "dirty": False,
        "error": "no suitable tags",
        "date": None
    }


@register_vcs_handler("git", "pieces_from_vcs")
def git_pieces_from_vcs(tag_prefix, root, verbose, run_command=run_command):
    """Get version from 'git describe' in the root of the source tree.

    This only gets called if the git-archive 'subst' keywords were *not*
    expanded, and _version.py hasn't already been rewritten with a short
    version string, meaning we're inside a checked out source tree.
    """
    GITS = ["git"]
    if sys.platform == "win32":
        GITS = ["git.cmd", "git.exe"]

    out, rc = run_command(
        GITS, ["rev-parse", "--git-dir"], cwd=root, hide_stderr=True)
    if rc != 0:
        if verbose:
            print("Directory %s not under git control" % root)
        raise NotThisMethod("'git rev-parse --git-dir' returned error")

    # if there is a tag matching tag_prefix, this yields TAG-NUM-gHEX[-dirty]
    # if there isn't one, this yields HEX[-dirty] (no NUM)
    describe_out, rc = run_command(
        GITS, [
            "describe", "--tags", "--dirty", "--always", "--long", "--match",
            "%s*" % tag_prefix
        ],
        cwd=root)
    # --long was added in git-1.5.5
    if describe_out is None:
        raise NotThisMethod("'git describe' failed")
    describe_out = describe_out.strip()
    full_out, rc = run_command(GITS, ["rev-parse", "HEAD"], cwd=root)
    if full_out is None:
        raise NotThisMethod("'git rev-parse' failed")
    full_out = full_out.strip()

    pieces = {}
    pieces["long"] = full_out
    pieces["short"] = full_out[:7]  # maybe improved later
    pieces["error"] = None

    # parse describe_out. It will be like TAG-NUM-gHEX[-dirty] or HEX[-dirty]
    # TAG might have hyphens.
    git_describe = describe_out

    # look for -dirty suffix
    dirty = git_describe.endswith("-dirty")
    pieces["dirty"] = dirty
    if dirty:
        git_describe = git_describe[:git_describe.rindex("-dirty")]

    # now we have TAG-NUM-gHEX or HEX

    if "-" in git_describe:
        # TAG-NUM-gHEX
        mo = re.search(r'^(.+)-(\d+)-g([0-9a-f]+)$', git_describe)
        if not mo:
            # unparseable. Maybe git-describe is misbehaving?
            pieces["error"] = ("unable to parse git-describe output: '%s'" %
                               describe_out)
            return pieces

        # tag
        full_tag = mo.group(1)
        if not full_tag.startswith(tag_prefix):
            if verbose:
                fmt = "tag '%s' doesn't start with prefix '%s'"
                print(fmt % (full_tag, tag_prefix))
            pieces["error"] = ("tag '%s' doesn't start with prefix '%s'" %
                               (full_tag, tag_prefix))
            return pieces
        pieces["closest-tag"] = full_tag[len(tag_prefix):]

        # distance: number of commits since tag
        pieces["distance"] = int(mo.group(2))

        # commit: short hex revision ID
        pieces["short"] = mo.group(3)

    else:
        # HEX: no tags
        pieces["closest-tag"] = None
        count_out, rc = run_command(
            GITS, ["rev-list", "HEAD", "--count"], cwd=root)
        pieces["distance"] = int(count_out)  # total number of commits

    # commit date: see ISO-8601 comment in git_versions_from_keywords()
    date = run_command(
        GITS, ["show", "-s", "--format=%ci", "HEAD"], cwd=root)[0].strip()
    pieces["date"] = date.strip().replace(" ", "T", 1).replace(" ", "", 1)

    return pieces


def plus_or_dot(pieces):
    """Return a + if we don't already have one, else return a ."""
    if "+" in pieces.get("closest-tag", ""):
        return "."
    return "+"


def render_pep440(pieces):

    """Build up version string, with post-release "local version identifier".

    Our goal: TAG[+DISTANCE.gHEX[.dirty]] . Note that if you
    get a tagged build and then dirty it, you'll get TAG+0.gHEX.dirty

    Exceptions:
    1: no tags. git_describe was just HEX. 0+untagged.DISTANCE.gHEX[.dirty]
    """
    if pieces["closest-tag"]:
        rendered = pieces["closest-tag"]
        if pieces["distance"] or pieces["dirty"]:
            rendered += plus_or_dot(pieces)
            rendered += "%d.g%s" % (pieces["distance"], pieces["short"])
            if pieces["dirty"]:
                rendered += ".dirty"
    else:
        # exception #1
        rendered = "0+untagged.%d.g%s" % (pieces["distance"], pieces["short"])
        if pieces["dirty"]:
            rendered += ".dirty"
    return rendered



def render_pep440_pre(pieces):
    """TAG[.post.devDISTANCE] -- No -dirty.

    Exceptions:
    1: no tags. 0.post.devDISTANCE
    """
    if pieces["closest-tag"]:
        rendered = pieces["closest-tag"]
        if pieces["distance"]:
            rendered += ".post.dev%d" % pieces["distance"]
    else:
        # exception #1
        rendered = "0.post.dev%d" % pieces["distance"]
    return rendered


def render_pep440_post(pieces):
    """TAG[.postDISTANCE[.dev0]+gHEX] .

    The ".dev0" means dirty. Note that .dev0 sorts backwards
    (a dirty tree will appear "older" than the corresponding clean one),
    but you shouldn't be releasing software with -dirty anyways.

    Exceptions:
    1: no tags. 0.postDISTANCE[.dev0]

    """
    if pieces["closest-tag"]:
        rendered = pieces["closest-tag"]
        if pieces["distance"] or pieces["dirty"]:
            rendered += ".post%d" % pieces["distance"]
            if pieces["dirty"]:
                rendered += ".dev0"
            rendered += plus_or_dot(pieces)
            rendered += "g%s" % pieces["short"]
    else:
        # exception #1
        rendered = "0.post%d" % pieces["distance"]
        if pieces["dirty"]:
            rendered += ".dev0"
        rendered += "+g%s" % pieces["short"]
    return rendered


def render_pep440_old(pieces):
    """TAG[.postDISTANCE[.dev0]] .

    The ".dev0" means dirty.

    Eexceptions:
    1: no tags. 0.postDISTANCE[.dev0]
    """
    if pieces["closest-tag"]:
        rendered = pieces["closest-tag"]
        if pieces["distance"] or pieces["dirty"]:
            rendered += ".post%d" % pieces["distance"]
            if pieces["dirty"]:
                rendered += ".dev0"
    else:
        # exception #1
        rendered = "0.post%d" % pieces["distance"]
        if pieces["dirty"]:
            rendered += ".dev0"
    return rendered


def render_git_describe(pieces):
    """TAG[-DISTANCE-gHEX][-dirty].

    Like 'git describe --tags --dirty --always'.

    Exceptions:
    1: no tags. HEX[-dirty]  (note: no 'g' prefix)
    """
    if pieces["closest-tag"]:
        rendered = pieces["closest-tag"]
        if pieces["distance"]:
            rendered += "-%d-g%s" % (pieces["distance"], pieces["short"])
    else:
        # exception #1
        rendered = pieces["short"]
    if pieces["dirty"]:
        rendered += "-dirty"
    return rendered


def render_git_describe_long(pieces):
    """TAG-DISTANCE-gHEX[-dirty].


    Like 'git describe --tags --dirty --always -long'.
    The distance/hash is unconditional.

    Exceptions:
    1: no tags. HEX[-dirty]  (note: no 'g' prefix)
    """
    if pieces["closest-tag"]:
        rendered = pieces["closest-tag"]
        rendered += "-%d-g%s" % (pieces["distance"], pieces["short"])
    else:
        # exception #1
        rendered = pieces["short"]
    if pieces["dirty"]:
        rendered += "-dirty"
    return rendered


def render(pieces, style):
    """Render the given version pieces into the requested style."""
    if pieces["error"]:
        return {
            "version": "unknown",
            "full-revisionid": pieces.get("long"),
            "dirty": None,
            "error": pieces["error"],
            "date": None
        }

    if not style or style == "default":
        style = "pep440"  # the default

    if style == "pep440":
        rendered = render_pep440(pieces)
    elif style == "pep440-pre":
        rendered = render_pep440_pre(pieces)
    elif style == "pep440-post":
        rendered = render_pep440_post(pieces)
    elif style == "pep440-old":
        rendered = render_pep440_old(pieces)
    elif style == "git-describe":
        rendered = render_git_describe(pieces)
    elif style == "git-describe-long":
        rendered = render_git_describe_long(pieces)
    else:
        raise ValueError("unknown style '%s'" % style)

    return {
        "version": rendered,
        "full-revisionid": pieces["long"],
        "dirty": pieces["dirty"],
        "error": None,
        "date": pieces.get("date")
    }


def get_versions():
    """Get version information or return default if unable to do so."""
    # I am in _version.py, which lives at ROOT/VERSIONFILE_SOURCE. If we have
    # __file__, we can work backwards from there to the root. Some
    # py2exe/bbfreeze/non-CPython implementations don't do __file__, in which
    # case we can only use expanded keywords.

    cfg = get_config()
    verbose = cfg.verbose

    try:
        return git_versions_from_keywords(get_keywords(), cfg.tag_prefix,
                                          verbose)
    except NotThisMethod:
        pass

    try:
        root = os.path.realpath(__file__)
        # versionfile_source is the relative path from the top of the source
        # tree (where the .git directory might live) to this file. Invert
        # this to find the root from __file__.
        for i in cfg.versionfile_source.split('/'):
            root = os.path.dirname(root)
    except NameError:
        return {
            "version": "0+unknown",
            "full-revisionid": None,
            "dirty": None,
            "error": "unable to find root of source tree",
            "date": None
        }

    try:
        pieces = git_pieces_from_vcs(cfg.tag_prefix, root, verbose)
        return render(pieces, cfg.style)
    except NotThisMethod:
        pass

    try:
        if cfg.parentdir_prefix:
            return versions_from_parentdir(cfg.parentdir_prefix, root, verbose)
    except NotThisMethod:
        pass

    return {
        "version": "0+unknown",
        "full-revisionid": None,
        "dirty": None,
        "error": "unable to compute version",
        "date": None
    }


1		# This file helps to compute a version number in source trees obtained from
2		# git-archive tarball (such as those provided by githubs download-from-tag
3		# feature). Distribution tarballs (built by setup.py sdist) and build
4		# directories (produced by setup.py build) will contain a much shorter file
5		# that just contains the computed version number.
6
7		# This file is released into the public domain. Generated by
8		# versioneer-0.18 (https://github.com/warner/python-versioneer)
9		"""Git implementation of _version.py."""
10
11		# Standard library imports
12		import errno
13		import os
14		import re
15		import subprocess
16		import sys
17
18
19		def get_keywords():
20		"""Get the keywords needed to look up the version information."""
21		# these strings will be replaced by git during git-archive.
22		# setup.py/versioneer.py will grep for the variable names, so they must
23		# each be defined on a line of their own. _version.py will just call
24		# get_keywords().
25		git_refnames = "$Format:%d$"
26		git_full = "$Format:%H$"
27		git_date = "$Format:%ci$"
28		keywords = {"refnames": git_refnames, "full": git_full, "date": git_date}
29		return keywords
30
31
32		class VersioneerConfig:
33		"""Container for Versioneer configuration parameters."""
34
35
36		def get_config():
37		"""Create, populate and return the VersioneerConfig() object."""
38		# these strings are filled in when 'setup.py versioneer' creates
39		# _version.py
40		cfg = VersioneerConfig()
41		cfg.VCS = "git"
42		cfg.style = "pep440"
43		cfg.tag_prefix = "v"
44		cfg.parentdir_prefix = "None"
45		cfg.versionfile_source = "loghub/_version.py"
46		cfg.verbose = False
47		return cfg
48
49
50		class NotThisMethod(Exception):
51		"""Exception raised if a method is not valid for the current scenario."""
52
53
54		LONG_VERSION_PY = {}
55		HANDLERS = {}
56
57
58		def register_vcs_handler(vcs, method): # decorator
59		"""Decorator to mark a method as the handler for a particular VCS."""
60
61		def decorate(f):
62		"""Store f in HANDLERS[vcs][method]."""
63		if vcs not in HANDLERS:
64		HANDLERS[vcs] = {}
65		HANDLERS[vcs][method] = f
66		return f
67
68		return decorate
69
70	View Code Duplication
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71		def run_command(commands,
72		args,
73		cwd=None,
74		verbose=False,
75		hide_stderr=False,
76		env=None):
77		"""Call the given command(s)."""
78		assert isinstance(commands, list)
79		p = None
80		for c in commands:
81		try:
82		dispcmd = str([c] + args)
83		# remember shell=False, so use git.cmd on windows, not just git
84		p = subprocess.Popen(
85		[c] + args,
86		cwd=cwd,
87		env=env,
88		stdout=subprocess.PIPE,
89		stderr=(subprocess.PIPE if hide_stderr else None))
90		break
91		except EnvironmentError:
92		e = sys.exc_info()[1]
93		if e.errno == errno.ENOENT:
94		continue
95		if verbose:
96		print("unable to run %s" % dispcmd)
97		print(e)
98		return None, None
99		else:
100		if verbose:
101		print("unable to find command, tried %s" % (commands, ))
102		return None, None
103		stdout = p.communicate()[0].strip()
104		if sys.version_info[0] >= 3:
105		stdout = stdout.decode()
106		if p.returncode != 0:
107	View Code Duplication	if verbose:
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108		print("unable to run %s (error)" % dispcmd)
109		print("stdout was %s" % stdout)
110		return None, p.returncode
111		return stdout, p.returncode
112
113
114		def versions_from_parentdir(parentdir_prefix, root, verbose):
115		"""Try to determine the version from the parent directory name.
116
117		Source tarballs conventionally unpack into a directory that includes both
118		the project name and a version string. We will also support searching up
119		two directory levels for an appropriately named parent directory
120		"""
121		rootdirs = []
122
123		for i in range(3):
124		dirname = os.path.basename(root)
125		if dirname.startswith(parentdir_prefix):
126		return {
127		"version": dirname[len(parentdir_prefix):],
128		"full-revisionid": None,
129		"dirty": False,
130		"error": None,
131		"date": None
132	View Code Duplication	}
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133		else:
134		rootdirs.append(root)
135		root = os.path.dirname(root) # up a level
136
137		if verbose:
138		print("Tried directories %s but none started with prefix %s" %
139		(str(rootdirs), parentdir_prefix))
140		raise NotThisMethod("rootdir doesn't start with parentdir_prefix")
141
142
143		@register_vcs_handler("git", "get_keywords")
144		def git_get_keywords(versionfile_abs):
145		"""Extract version information from the given file."""
146		# the code embedded in _version.py can just fetch the value of these
147		# keywords. When used from setup.py, we don't want to import _version.py,
148		# so we do it with a regexp instead. This function is not used from
149		# _version.py.
150		keywords = {}
151		try:
152		f = open(versionfile_abs, "r")
153		for line in f.readlines():
154		if line.strip().startswith("git_refnames ="):
155		mo = re.search(r'=\s"(.)"', line)
156		if mo:
157		keywords["refnames"] = mo.group(1)
158		if line.strip().startswith("git_full ="):
159		mo = re.search(r'=\s"(.)"', line)
160		if mo:
161	View Code Duplication	keywords["full"] = mo.group(1)
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162		if line.strip().startswith("git_date ="):
163		mo = re.search(r'=\s"(.)"', line)
164		if mo:
165		keywords["date"] = mo.group(1)
166		f.close()
167		except EnvironmentError:
168		pass
169		return keywords
170
171
172		@register_vcs_handler("git", "keywords")
173		def git_versions_from_keywords(keywords, tag_prefix, verbose):
174		"""Get version information from git keywords."""
175		if not keywords:
176		raise NotThisMethod("no keywords at all, weird")
177		date = keywords.get("date")
178		if date is not None:
179		# git-2.2.0 added "%cI", which expands to an ISO-8601 -compliant
180		# datestamp. However we prefer "%ci" (which expands to an "ISO-8601
181		# -like" string, which we must then edit to make compliant), because
182		# it's been around since git-1.5.3, and it's too difficult to
183		# discover which version we're using, or to work around using an
184		# older one.
185		date = date.strip().replace(" ", "T", 1).replace(" ", "", 1)
186		refnames = keywords["refnames"].strip()
187		if refnames.startswith("$Format"):
188		if verbose:
189		print("keywords are unexpanded, not using")
190		raise NotThisMethod("unexpanded keywords, not a git-archive tarball")
191		refs = set([r.strip() for r in refnames.strip("()").split(",")])
192		# starting in git-1.8.3, tags are listed as "tag: foo-1.0" instead of
193		# just "foo-1.0". If we see a "tag: " prefix, prefer those.
194		TAG = "tag: "
195		tags = set([r[len(TAG):] for r in refs if r.startswith(TAG)])
196		if not tags:
197		# Either we're using git < 1.8.3, or there really are no tags. We use
198		# a heuristic: assume all version tags have a digit. The old git %d
199		# expansion behaves like git log --decorate=short and strips out the
200		# refs/heads/ and refs/tags/ prefixes that would let us distinguish
201		# between branches and tags. By ignoring refnames without digits, we
202		# filter out many common branch names like "release" and
203		# "stabilization", as well as "HEAD" and "master".
204		tags = set([r for r in refs if re.search(r'\d', r)])
205		if verbose:
206		print("discarding '%s', no digits" % ",".join(refs - tags))
207		if verbose:
208		print("likely tags: %s" % ",".join(sorted(tags)))
209		for ref in sorted(tags):
210		# sorting will prefer e.g. "2.0" over "2.0rc1"
211		if ref.startswith(tag_prefix):
212		r = ref[len(tag_prefix):]
213		if verbose:
214		print("picking %s" % r)
215		return {
216	View Code Duplication	"version": r,
		0 ignored issues – show Duplication introduced 2017-01-16 03:16 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Loading history...
217		"full-revisionid": keywords["full"].strip(),
218		"dirty": False,
219		"error": None,
220		"date": date
221		}
222		# no suitable tags, so version is "0+unknown", but full hex is still there
223		if verbose:
224		print("no suitable tags, using unknown + full revision id")
225		return {
226		"version": "0+unknown",
227		"full-revisionid": keywords["full"].strip(),
228		"dirty": False,
229		"error": "no suitable tags",
230		"date": None
231		}
232
233
234		@register_vcs_handler("git", "pieces_from_vcs")
235		def git_pieces_from_vcs(tag_prefix, root, verbose, run_command=run_command):
236		"""Get version from 'git describe' in the root of the source tree.
237
238		This only gets called if the git-archive 'subst' keywords were not
239		expanded, and _version.py hasn't already been rewritten with a short
240		version string, meaning we're inside a checked out source tree.
241		"""
242		GITS = ["git"]
243		if sys.platform == "win32":
244		GITS = ["git.cmd", "git.exe"]
245
246		out, rc = run_command(
247		GITS, ["rev-parse", "--git-dir"], cwd=root, hide_stderr=True)
248		if rc != 0:
249		if verbose:
250		print("Directory %s not under git control" % root)
251		raise NotThisMethod("'git rev-parse --git-dir' returned error")
252
253		# if there is a tag matching tag_prefix, this yields TAG-NUM-gHEX[-dirty]
254		# if there isn't one, this yields HEX[-dirty] (no NUM)
255		describe_out, rc = run_command(
256		GITS, [
257		"describe", "--tags", "--dirty", "--always", "--long", "--match",
258		"%s*" % tag_prefix
259		],
260		cwd=root)
261		# --long was added in git-1.5.5
262		if describe_out is None:
263		raise NotThisMethod("'git describe' failed")
264		describe_out = describe_out.strip()
265		full_out, rc = run_command(GITS, ["rev-parse", "HEAD"], cwd=root)
266		if full_out is None:
267		raise NotThisMethod("'git rev-parse' failed")
268		full_out = full_out.strip()
269
270		pieces = {}
271		pieces["long"] = full_out
272		pieces["short"] = full_out[:7] # maybe improved later
273		pieces["error"] = None
274
275		# parse describe_out. It will be like TAG-NUM-gHEX[-dirty] or HEX[-dirty]
276		# TAG might have hyphens.
277		git_describe = describe_out
278
279		# look for -dirty suffix
280		dirty = git_describe.endswith("-dirty")
281		pieces["dirty"] = dirty
282		if dirty:
283		git_describe = git_describe[:git_describe.rindex("-dirty")]
284
285		# now we have TAG-NUM-gHEX or HEX
286
287		if "-" in git_describe:
288		# TAG-NUM-gHEX
289		mo = re.search(r'^(.+)-(\d+)-g([0-9a-f]+)$', git_describe)
290		if not mo:
291		# unparseable. Maybe git-describe is misbehaving?
292		pieces["error"] = ("unable to parse git-describe output: '%s'" %
293		describe_out)
294		return pieces
295
296		# tag
297		full_tag = mo.group(1)
298		if not full_tag.startswith(tag_prefix):
299		if verbose:
300		fmt = "tag '%s' doesn't start with prefix '%s'"
301		print(fmt % (full_tag, tag_prefix))
302		pieces["error"] = ("tag '%s' doesn't start with prefix '%s'" %
303		(full_tag, tag_prefix))
304		return pieces
305		pieces["closest-tag"] = full_tag[len(tag_prefix):]
306
307		# distance: number of commits since tag
308		pieces["distance"] = int(mo.group(2))
309
310		# commit: short hex revision ID
311		pieces["short"] = mo.group(3)
312
313		else:
314		# HEX: no tags
315		pieces["closest-tag"] = None
316		count_out, rc = run_command(
317		GITS, ["rev-list", "HEAD", "--count"], cwd=root)
318		pieces["distance"] = int(count_out) # total number of commits
319
320		# commit date: see ISO-8601 comment in git_versions_from_keywords()
321		date = run_command(
322		GITS, ["show", "-s", "--format=%ci", "HEAD"], cwd=root)[0].strip()
323		pieces["date"] = date.strip().replace(" ", "T", 1).replace(" ", "", 1)
324
325		return pieces
326
327
328		def plus_or_dot(pieces):
329		"""Return a + if we don't already have one, else return a ."""
330		if "+" in pieces.get("closest-tag", ""):
331		return "."
332		return "+"
333
334
335	View Code Duplication	def render_pep440(pieces):
		0 ignored issues – show Duplication introduced 2017-01-16 03:18 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Loading history...
336		"""Build up version string, with post-release "local version identifier".
337
338		Our goal: TAG[+DISTANCE.gHEX[.dirty]] . Note that if you
339		get a tagged build and then dirty it, you'll get TAG+0.gHEX.dirty
340
341		Exceptions:
342		1: no tags. git_describe was just HEX. 0+untagged.DISTANCE.gHEX[.dirty]
343		"""
344		if pieces["closest-tag"]:
345		rendered = pieces["closest-tag"]
346		if pieces["distance"] or pieces["dirty"]:
347		rendered += plus_or_dot(pieces)
348		rendered += "%d.g%s" % (pieces["distance"], pieces["short"])
349		if pieces["dirty"]:
350		rendered += ".dirty"
351		else:
352		# exception #1
353		rendered = "0+untagged.%d.g%s" % (pieces["distance"], pieces["short"])
354		if pieces["dirty"]:
355		rendered += ".dirty"
356	View Code Duplication	return rendered
		0 ignored issues – show Duplication introduced 2017-01-16 03:16 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Loading history...
357
358
359		def render_pep440_pre(pieces):
360		"""TAG[.post.devDISTANCE] -- No -dirty.
361
362		Exceptions:
363		1: no tags. 0.post.devDISTANCE
364		"""
365		if pieces["closest-tag"]:
366		rendered = pieces["closest-tag"]
367		if pieces["distance"]:
368		rendered += ".post.dev%d" % pieces["distance"]
369		else:
370		# exception #1
371		rendered = "0.post.dev%d" % pieces["distance"]
372		return rendered
373
374
375		def render_pep440_post(pieces):
376		"""TAG[.postDISTANCE[.dev0]+gHEX] .
377
378		The ".dev0" means dirty. Note that .dev0 sorts backwards
379		(a dirty tree will appear "older" than the corresponding clean one),
380		but you shouldn't be releasing software with -dirty anyways.
381
382		Exceptions:
383	View Code Duplication	1: no tags. 0.postDISTANCE[.dev0]
		0 ignored issues – show Duplication introduced 2017-01-16 03:16 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Loading history...
384		"""
385		if pieces["closest-tag"]:
386		rendered = pieces["closest-tag"]
387		if pieces["distance"] or pieces["dirty"]:
388		rendered += ".post%d" % pieces["distance"]
389		if pieces["dirty"]:
390		rendered += ".dev0"
391		rendered += plus_or_dot(pieces)
392		rendered += "g%s" % pieces["short"]
393		else:
394		# exception #1
395		rendered = "0.post%d" % pieces["distance"]
396		if pieces["dirty"]:
397		rendered += ".dev0"
398		rendered += "+g%s" % pieces["short"]
399		return rendered
400
401
402		def render_pep440_old(pieces):
403		"""TAG[.postDISTANCE[.dev0]] .
404
405		The ".dev0" means dirty.
406
407		Eexceptions:
408		1: no tags. 0.postDISTANCE[.dev0]
409		"""
410		if pieces["closest-tag"]:
411		rendered = pieces["closest-tag"]
412		if pieces["distance"] or pieces["dirty"]:
413		rendered += ".post%d" % pieces["distance"]
414		if pieces["dirty"]:
415		rendered += ".dev0"
416		else:
417		# exception #1
418		rendered = "0.post%d" % pieces["distance"]
419		if pieces["dirty"]:
420		rendered += ".dev0"
421		return rendered
422
423
424		def render_git_describe(pieces):
425		"""TAG[-DISTANCE-gHEX][-dirty].
426
427		Like 'git describe --tags --dirty --always'.
428
429		Exceptions:
430		1: no tags. HEX[-dirty] (note: no 'g' prefix)
431		"""
432		if pieces["closest-tag"]:
433		rendered = pieces["closest-tag"]
434		if pieces["distance"]:
435		rendered += "-%d-g%s" % (pieces["distance"], pieces["short"])
436		else:
437		# exception #1
438		rendered = pieces["short"]
439		if pieces["dirty"]:
440		rendered += "-dirty"
441		return rendered
442
443
444		def render_git_describe_long(pieces):
445	View Code Duplication	"""TAG-DISTANCE-gHEX[-dirty].
		0 ignored issues – show Duplication introduced 2017-01-16 03:16 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Loading history...
446
447		Like 'git describe --tags --dirty --always -long'.
448		The distance/hash is unconditional.
449
450		Exceptions:
451		1: no tags. HEX[-dirty] (note: no 'g' prefix)
452		"""
453		if pieces["closest-tag"]:
454		rendered = pieces["closest-tag"]
455		rendered += "-%d-g%s" % (pieces["distance"], pieces["short"])
456		else:
457		# exception #1
458		rendered = pieces["short"]
459		if pieces["dirty"]:
460		rendered += "-dirty"
461		return rendered
462
463
464		def render(pieces, style):
465		"""Render the given version pieces into the requested style."""
466		if pieces["error"]:
467		return {
468		"version": "unknown",
469		"full-revisionid": pieces.get("long"),
470		"dirty": None,
471		"error": pieces["error"],
472		"date": None
473		}
474
475		if not style or style == "default":
476		style = "pep440" # the default
477
478		if style == "pep440":
479		rendered = render_pep440(pieces)
480		elif style == "pep440-pre":
481		rendered = render_pep440_pre(pieces)
482		elif style == "pep440-post":
483		rendered = render_pep440_post(pieces)
484		elif style == "pep440-old":
485		rendered = render_pep440_old(pieces)
486		elif style == "git-describe":
487		rendered = render_git_describe(pieces)
488		elif style == "git-describe-long":
489		rendered = render_git_describe_long(pieces)
490		else:
491		raise ValueError("unknown style '%s'" % style)
492
493		return {
494		"version": rendered,
495		"full-revisionid": pieces["long"],
496		"dirty": pieces["dirty"],
497		"error": None,
498		"date": pieces.get("date")
499		}
500
501
502		def get_versions():
503		"""Get version information or return default if unable to do so."""
504		# I am in _version.py, which lives at ROOT/VERSIONFILE_SOURCE. If we have
505		# __file__, we can work backwards from there to the root. Some
506		# py2exe/bbfreeze/non-CPython implementations don't do __file__, in which
507		# case we can only use expanded keywords.
508
509		cfg = get_config()
510		verbose = cfg.verbose
511
512		try:
513		return git_versions_from_keywords(get_keywords(), cfg.tag_prefix,
514		verbose)
515		except NotThisMethod:
516		pass
517
518		try:
519		root = os.path.realpath(__file__)
520		# versionfile_source is the relative path from the top of the source
521		# tree (where the .git directory might live) to this file. Invert
522		# this to find the root from __file__.
523		for i in cfg.versionfile_source.split('/'):
524		root = os.path.dirname(root)
525		except NameError:
526		return {
527		"version": "0+unknown",
528		"full-revisionid": None,
529		"dirty": None,
530		"error": "unable to find root of source tree",
531		"date": None
532		}
533
534		try:
535		pieces = git_pieces_from_vcs(cfg.tag_prefix, root, verbose)
536		return render(pieces, cfg.style)
537		except NotThisMethod:
538		pass
539
540		try:
541		if cfg.parentdir_prefix:
542		return versions_from_parentdir(cfg.parentdir_prefix, root, verbose)
543		except NotThisMethod:
544		pass
545
546		return {
547		"version": "0+unknown",
548		"full-revisionid": None,
549		"dirty": None,
550		"error": "unable to compute version",
551		"date": None
552		}
553

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