#!/usr/bin/env python3

"""

Utilities for handling dependencies and version changes.

"""

from . import ic # noqa: F401

from . import warnings

class _version(list):

"""

Casual parser for ``major.minor`` style version strings. We do not want to

add a 'packaging' dependency and only care about major and minor tags.

"""

def __str__(self):

return self._version

def __repr__(self):

return f'version({self._version})'

def __init__(self, version):

try:

major, minor, *_ = version.split('.')

major, minor = int(major or 0), int(minor or 0)

except Exception:

warnings._warn_proplot(f'Unexpected version {version!r}. Using 0.0.0.')

major = minor = 0

self._version = f'{major}.{minor}'

super().__init__((major, minor)) # then use builtin python list sorting

def __eq__(self, other):

return super().__eq__(_version(other))

def __ne__(self, other):

return super().__ne__(_version(other))

def __gt__(self, other):

return super().__gt__(_version(other))

def __lt__(self, other):

return super().__lt__(_version(other))

def __ge__(self, other):

return super().__ge__(_version(other))

def __le__(self, other):

return super().__le__(_version(other))

# Matplotlib version

import matplotlib # isort:skip

_version_mpl = _version(matplotlib.__version__)

# Cartopy version

try:

import cartopy

except ImportError:

_version_cartopy = _version('0.0.0')

else:

_version_cartopy = _version(cartopy.__version__)