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import re
import functools
from typing import List, Union, Any
def unused(_: Any) -> None:
pass
def is_uuid(value: str) -> str:
"""
>>> is_uuid("2c244488-4a91-4c21-a0b7-0f731d4336c7")
'2c244488-4a91-4c21-a0b7-0f731d4336c7'
>>> is_uuid("test")
''
"""
match = re.match(
"^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$",
value.lower(),
)
if match is not None:
return match.group(0)
return ""
def memoize(func):
memoize_dict = {}
@functools.wraps(func)
def wrapper(*args, **kwargs):
try:
key = (args, frozenset(kwargs.items()))
except TypeError:
# cannot create key -- for instance, passing a list as an argument.
# FIXME: Log warning here
return func(*args, **kwargs)
try:
return memoize_dict[key]
except KeyError:
value = func(*args, **kwargs)
try:
memoize_dict[key] = value
except TypeError:
# not cacheable -- for instance, passing a list as an
# argument.
# FIXME: Log warning here
# FIXME: will not happen here.. se above type error?
pass
return value
return wrapper
def split_version(version_string: str) -> List[str]:
pattern = re.compile(
"^([0-9]{1,4})(?:\.([0-9]{1,4}))?"
"(?:\.([0-9]{1,4}))?(?:\.([0-9]{1,4}))?"
"(~?[a-z0-9\.]*)?(?:[-_]([0-9]+))?$"
)
m = pattern.match(version_string)
if m is None:
raise ValueError(version_string + " is not a valid version number")
return list(m.groups())
class Version(object):
def __init__(self, version_string: str) -> None:
self.string = version_string
v = split_version(version_string)
self.major = int(v[0])
self.minor = int(v[1] or "0")
self.revision = int(v[2] or "0")
self.build = int(v[3] or "0")
self.val = self.major * 10000 ** 3
self.val += self.minor * 10000 ** 2
self.val += self.revision * 10000 ** 1
self.val += self.build * 10000 ** 0
self.mod = v[4]
self.release = -1 if v[5] is None else int(v[5])
# print(
# {
# "major": self.major,
# "minor": self.minor,
# "revision": self.revision,
# "build": self.build,
# "val": self.val,
# "mod": self.mod,
# "release": self.release,
# }
# )
def cmp_value(self):
mod_cmp = self.mod or "~~e"
if not mod_cmp.startswith("~"):
mod_cmp = "~~" + mod_cmp
return self.val, mod_cmp, self.release
def __lt__(self, other: "Version") -> bool:
return self.cmp_value() < other.cmp_value()
def __gt__(self, other: "Version") -> bool:
return self.cmp_value() > other.cmp_value()
def __str__(self) -> str:
return self.string
def compare_versions(a: Union[Version, str], b: Union[Version, str]):
"""
>>> compare_versions("1.0.0", "1.0.1")
-1
>>> compare_versions("2.0.0", "1.0.1")
1
>>> compare_versions("1.2.3u2", "1.2.3")
1
>>> compare_versions("1.2.3a2", "1.2.3")
-1
>>> compare_versions("2.0.0", "2.0.0beta3")
1
>>> compare_versions("2.0.1", "2.0.0~beta3")
1
>>> compare_versions("2.0.0", "2.0.0~beta3")
1
>>> compare_versions("2.5.30~dev", "2.5.30")
-1
>>> compare_versions("2.5.30~dev2", "2.5.30~dev1")
1
>>> compare_versions("2.6beta", "2.5.30~dev1")
1
>>> compare_versions("2.6beta", "2.6")
-1
>>> compare_versions("2.6beta", "2.6.0")
-1
>>> compare_versions("2.6beta", "2.6.1")
-1
>>> compare_versions("2.6.0beta1", "2.6.1")
-1
>>> compare_versions("5.9.1.1", "5.9.1dev")
1
>>> compare_versions("5.9.1.1", "5.9.2dev")
-1
>>> compare_versions("3.8.1qemu2.2.0", "3.9.1qemu2.2.0")
-1
>>> compare_versions("3.8.1qemu2.4.0", "3.8.1qemu2.2.0")
1
>>> compare_versions("1.22.2-1", "1.22.2")
1
>>> compare_versions("1.22.2-0", "1.22.2")
1
>>> compare_versions("3.3-0", "3.4")
-1
>>> compare_versions("3.3-0", "3.3-1")
-1
>>> compare_versions("3.3~fs0", "3.4")
-1
>>> compare_versions("3.3~fs0", "3.3~fs1")
-1
>>> compare_versions("1.22.2fs1", "1.22.2")
1
>>> compare_versions("1.22.2fs0", "1.22.2")
1
"""
# >>> compare_versions("2.6.0beta1", "2.6.0beta1.1")
# -1
# >>> compare_versions("2.6.0beta2", "2.6.0beta1.1")
# 1
if isinstance(a, Version):
pass
elif isinstance(a, str):
a = Version(a)
else:
raise TypeError("Not a valid version string or object")
if isinstance(b, Version):
pass
elif isinstance(b, str):
b = Version(b)
else:
raise TypeError("Not a valid version string or object")
# cmp is gone in Python 3
return (a > b) - (a < b)
def chained_exception(new_e, org_e):
new_e.__cause__ = org_e
return new_e
if __name__ == "__main__":
import doctest
doctest.testmod()
|
