debputy.version

src/debputy/version.py
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
from typing import Optional
from collections.abc import Callable

__version__ = "N/A"

IS_RELEASE_BUILD = False
_RUN_FROM_SOURCE = False

if __version__ in ("N/A",):
    _RUN_FROM_SOURCE = True
    import subprocess

    class LazyString:
        def __init__(self, initializer: Callable[[], str]) -> None:
            self._initializer = initializer
            self._value: str | None = None

        def __str__(self) -> str:
            value = object.__getattribute__(self, "_value")
            if value is None:
                value = object.__getattribute__(self, "_initializer")()
                object.__setattr__(self, "_value", value)
            return value

        def __getattribute__(self, item):
            value = str(self)
            return getattr(value, item)

        def __contains__(self, item):
            return item in str(self)

    def _initialize_version() -> str:
        try:
            devnull: int | None = subprocess.DEVNULL
        except AttributeError:
            devnull = None  # Not supported, but not critical

        try:
            v = (
                subprocess.check_output(
                    ["git", "describe", "--tags"],
                    stderr=devnull,
                )
                .strip()
                .decode("utf-8")
            )
            parts = v.split("-")
            if "-g" in v and len(parts) == 3:
                v = "".join(
                    (
                        parts[0],
                        ".dev",
                        parts[1],
                        "+",
                        parts[2],
                    )
                )
        except (subprocess.CalledProcessError, FileNotFoundError):
            try:
                v = (
                    subprocess.check_output(
                        ["dpkg-parsechangelog", "-SVersion"],
                        stderr=devnull,
                    )
                    .strip()
                    .decode("utf-8")
                )
            except (subprocess.CalledProcessError, FileNotFoundError):
                v = "N/A"
            else:
                import re

                v = re.sub(r"~bpo\d+[+]\d+$", "", v)
                m = re.match(r"(.+)~(\d+)[.]g(.+)", v)
                if m:
                    v = "".join(
                        (
                            m.group(1),
                            ".dev",
                            m.group(2),
                            "+",
                            m.group(3),
                        )
                    )

        if v.startswith("archive/"):
            v = v[8:]

        if v.startswith("debian/"):
            v = v[7:]
        return v

    __version__ = LazyString(_initialize_version)
    IS_RELEASE_BUILD = False

else:
    # Disregard snapshot versions (gbp dch -S) as "release builds"
    IS_RELEASE_BUILD = ".gbp" not in __version__