thurask / bbarchivist

    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,

                    "time": keywords["time"].strip()}

    # 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", "time": 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.

    """

    if not os.path.exists(os.path.join(root, ".git")):

        if verbose:

            print("no .git in %s" % root)

        raise NotThisMethod("no .git directory")

    GITS = ["git"]

    if sys.platform == "win32":

        GITS = ["git.cmd", "git.exe"]

    # 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 = 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 = 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):]

                    "time": keywords["time"].strip()}

    # 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", "time": 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.

    """

    if not os.path.exists(os.path.join(root, ".git")):

        if verbose:

            print("no .git in %s" % root)

        raise NotThisMethod("no .git directory")

    GITS = ["git"]

    if sys.platform == "win32":

        GITS = ["git.cmd", "git.exe"]

    # 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 = 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 = 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 = run_command(GITS, ["rev-list", "HEAD", "--count"],

                                cwd=root)