File size: 24,578 Bytes
2fb8752
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
# 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-0.29
# https://github.com/python-versioneer/python-versioneer

"""Git implementation of _version.py."""

import errno
import functools
import os
import re
import subprocess
import sys
from typing import Any, Callable, Dict, List, Optional, Tuple

import versioneer

hardcoded_version = None


def get_current_version():
    if hardcoded_version is not None:
        return hardcoded_version
    return versioneer.get_version()


def get_keywords() -> Dict[str, str]:
    """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."""

    VCS: str
    style: str
    tag_prefix: str
    parentdir_prefix: str
    versionfile_source: str
    verbose: bool


def get_config() -> VersioneerConfig:
    """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 = ""
    cfg.parentdir_prefix = ""
    cfg.versionfile_source = "src/unitxt/_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: Dict[str, str] = {}
HANDLERS: Dict[str, Dict[str, Callable]] = {}


def register_vcs_handler(vcs: str, method: str) -> Callable:  # decorator
    """Create decorator to mark a method as the handler of a VCS."""

    def decorate(f: Callable) -> Callable:
        """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: List[str],
    args: List[str],
    cwd: Optional[str] = None,
    verbose: bool = False,
    hide_stderr: bool = False,
    env: Optional[Dict[str, str]] = None,
) -> Tuple[Optional[str], Optional[int]]:
    """Call the given command(s)."""
    assert isinstance(commands, list)
    process = None

    popen_kwargs: Dict[str, Any] = {}
    if sys.platform == "win32":
        # This hides the console window if pythonw.exe is used
        startupinfo = subprocess.STARTUPINFO()
        startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
        popen_kwargs["startupinfo"] = startupinfo

    for command in commands:
        try:
            dispcmd = str([command] + args)
            # remember shell=False, so use git.cmd on windows, not just git
            process = subprocess.Popen(
                [command] + args,
                cwd=cwd,
                env=env,
                stdout=subprocess.PIPE,
                stderr=(subprocess.PIPE if hide_stderr else None),
                **popen_kwargs,
            )
            break
        except OSError as e:
            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 = process.communicate()[0].strip().decode()
    if process.returncode != 0:
        if verbose:
            print("unable to run %s (error)" % dispcmd)
            print("stdout was %s" % stdout)
        return None, process.returncode
    return stdout, process.returncode


def versions_from_parentdir(
    parentdir_prefix: str,
    root: str,
    verbose: bool,
) -> Dict[str, Any]:
    """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 _ 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,
            }
        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: str) -> Dict[str, str]:
    """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: Dict[str, str] = {}
    try:
        with open(versionfile_abs, "r") as fobj:
            for line in fobj:
                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)
    except OSError:
        pass
    return keywords


@register_vcs_handler("git", "keywords")
def git_versions_from_keywords(
    keywords: Dict[str, str],
    tag_prefix: str,
    verbose: bool,
) -> Dict[str, Any]:
    """Get version information from git keywords."""
    if "refnames" not in keywords:
        raise NotThisMethod("Short version file found")
    date = keywords.get("date")
    if date is not None:
        # Use only the last line.  Previous lines may contain GPG signature
        # information.
        date = date.splitlines()[-1]

        # 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 = {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 = {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 = {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) :]
            # Filter out refs that exactly match prefix or that don't start
            # with a number once the prefix is stripped (mostly a concern
            # when prefix is '')
            if not re.match(r"\d", r):
                continue
            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: str, root: str, verbose: bool, runner: Callable = run_command) -> Dict[str, Any]:
    """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"]

    # GIT_DIR can interfere with correct operation of Versioneer.
    # It may be intended to be passed to the Versioneer-versioned project,
    # but that should not change where we get our version from.
    env = os.environ.copy()
    env.pop("GIT_DIR", None)
    runner = functools.partial(runner, env=env)

    _, rc = runner(GITS, ["rev-parse", "--git-dir"], cwd=root, hide_stderr=not verbose)
    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 = runner(
        GITS, ["describe", "--tags", "--dirty", "--always", "--long", "--match", f"{tag_prefix}[[:digit:]]*"], 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 = runner(GITS, ["rev-parse", "HEAD"], cwd=root)
    if full_out is None:
        raise NotThisMethod("'git rev-parse' failed")
    full_out = full_out.strip()

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

    branch_name, rc = runner(GITS, ["rev-parse", "--abbrev-ref", "HEAD"], cwd=root)
    # --abbrev-ref was added in git-1.6.3
    if rc != 0 or branch_name is None:
        raise NotThisMethod("'git rev-parse --abbrev-ref' returned error")
    branch_name = branch_name.strip()

    if branch_name == "HEAD":
        # If we aren't exactly on a branch, pick a branch which represents
        # the current commit. If all else fails, we are on a branchless
        # commit.
        branches, rc = runner(GITS, ["branch", "--contains"], cwd=root)
        # --contains was added in git-1.5.4
        if rc != 0 or branches is None:
            raise NotThisMethod("'git branch --contains' returned error")
        branches = branches.split("\n")

        # Remove the first line if we're running detached
        if "(" in branches[0]:
            branches.pop(0)

        # Strip off the leading "* " from the list of branches.
        branches = [branch[2:] for branch in branches]
        if "master" in branches:
            branch_name = "master"
        elif not branches:
            branch_name = None
        else:
            # Pick the first branch that is returned. Good or bad.
            branch_name = branches[0]

    pieces["branch"] = branch_name

    # 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:
            # unparsable. 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
        out, rc = runner(GITS, ["rev-list", "HEAD", "--left-right"], cwd=root)
        pieces["distance"] = len(out.split())  # total number of commits

    # commit date: see ISO-8601 comment in git_versions_from_keywords()
    date = runner(GITS, ["show", "-s", "--format=%ci", "HEAD"], cwd=root)[0].strip()
    # Use only the last line.  Previous lines may contain GPG signature
    # information.
    date = date.splitlines()[-1]
    pieces["date"] = date.strip().replace(" ", "T", 1).replace(" ", "", 1)

    return pieces


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


def render_pep440(pieces: Dict[str, Any]) -> str:
    """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_branch(pieces: Dict[str, Any]) -> str:
    """TAG[[.dev0]+DISTANCE.gHEX[.dirty]] .

    The ".dev0" means not master branch. Note that .dev0 sorts backwards
    (a feature branch will appear "older" than the master branch).

    Exceptions:
    1: no tags. 0[.dev0]+untagged.DISTANCE.gHEX[.dirty]
    """
    if pieces["closest-tag"]:
        rendered = pieces["closest-tag"]
        if pieces["distance"] or pieces["dirty"]:
            if pieces["branch"] != "master":
                rendered += ".dev0"
            rendered += plus_or_dot(pieces)
            rendered += "%d.g%s" % (pieces["distance"], pieces["short"])
            if pieces["dirty"]:
                rendered += ".dirty"
    else:
        # exception #1
        rendered = "0"
        if pieces["branch"] != "master":
            rendered += ".dev0"
        rendered += "+untagged.%d.g%s" % (pieces["distance"], pieces["short"])
        if pieces["dirty"]:
            rendered += ".dirty"
    return rendered


def pep440_split_post(ver: str) -> Tuple[str, Optional[int]]:
    """Split pep440 version string at the post-release segment.

    Returns the release segments before the post-release and the
    post-release version number (or -1 if no post-release segment is present).
    """
    vc = str.split(ver, ".post")
    return vc[0], int(vc[1] or 0) if len(vc) == 2 else None


def render_pep440_pre(pieces: Dict[str, Any]) -> str:
    """TAG[.postN.devDISTANCE] -- No -dirty.

    Exceptions:
    1: no tags. 0.post0.devDISTANCE
    """
    if pieces["closest-tag"]:
        if pieces["distance"]:
            # update the post release segment
            tag_version, post_version = pep440_split_post(pieces["closest-tag"])
            rendered = tag_version
            if post_version is not None:
                rendered += ".post%d.dev%d" % (post_version + 1, pieces["distance"])
            else:
                rendered += ".post0.dev%d" % (pieces["distance"])
        else:
            # no commits, use the tag as the version
            rendered = pieces["closest-tag"]
    else:
        # exception #1
        rendered = "0.post0.dev%d" % pieces["distance"]
    return rendered


def render_pep440_post(pieces: Dict[str, Any]) -> str:
    """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_post_branch(pieces: Dict[str, Any]) -> str:
    """TAG[.postDISTANCE[.dev0]+gHEX[.dirty]] .

    The ".dev0" means not master branch.

    Exceptions:
    1: no tags. 0.postDISTANCE[.dev0]+gHEX[.dirty]
    """
    if pieces["closest-tag"]:
        rendered = pieces["closest-tag"]
        if pieces["distance"] or pieces["dirty"]:
            rendered += ".post%d" % pieces["distance"]
            if pieces["branch"] != "master":
                rendered += ".dev0"
            rendered += plus_or_dot(pieces)
            rendered += "g%s" % pieces["short"]
            if pieces["dirty"]:
                rendered += ".dirty"
    else:
        # exception #1
        rendered = "0.post%d" % pieces["distance"]
        if pieces["branch"] != "master":
            rendered += ".dev0"
        rendered += "+g%s" % pieces["short"]
        if pieces["dirty"]:
            rendered += ".dirty"
    return rendered


def render_pep440_old(pieces: Dict[str, Any]) -> str:
    """TAG[.postDISTANCE[.dev0]] .

    The ".dev0" means dirty.

    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"
    else:
        # exception #1
        rendered = "0.post%d" % pieces["distance"]
        if pieces["dirty"]:
            rendered += ".dev0"
    return rendered


def render_git_describe(pieces: Dict[str, Any]) -> str:
    """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: Dict[str, Any]) -> str:
    """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: Dict[str, Any], style: str) -> Dict[str, Any]:
    """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-branch":
        rendered = render_pep440_branch(pieces)
    elif style == "pep440-pre":
        rendered = render_pep440_pre(pieces)
    elif style == "pep440-post":
        rendered = render_pep440_post(pieces)
    elif style == "pep440-post-branch":
        rendered = render_pep440_post_branch(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() -> Dict[str, Any]:
    """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 _ 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,
    }