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105 lines
3.1 KiB
Python
105 lines
3.1 KiB
Python
5 years ago
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import datetime
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import functools
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import os
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import subprocess
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import sys
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from distutils.version import LooseVersion
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# Private, stable API for detecting the Python version. PYXY means "Python X.Y
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# or later". So that third-party apps can use these values, each constant
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# should remain as long as the oldest supported Django version supports that
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# Python version.
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PY36 = sys.version_info >= (3, 6)
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PY37 = sys.version_info >= (3, 7)
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PY38 = sys.version_info >= (3, 8)
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PY39 = sys.version_info >= (3, 9)
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def get_version(version=None):
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"""Return a PEP 440-compliant version number from VERSION."""
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version = get_complete_version(version)
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# Now build the two parts of the version number:
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# main = X.Y[.Z]
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# sub = .devN - for pre-alpha releases
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# | {a|b|rc}N - for alpha, beta, and rc releases
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main = get_main_version(version)
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sub = ''
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if version[3] == 'alpha' and version[4] == 0:
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git_changeset = get_git_changeset()
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if git_changeset:
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sub = '.dev%s' % git_changeset
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elif version[3] != 'final':
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mapping = {'alpha': 'a', 'beta': 'b', 'rc': 'rc'}
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sub = mapping[version[3]] + str(version[4])
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return main + sub
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def get_main_version(version=None):
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"""Return main version (X.Y[.Z]) from VERSION."""
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version = get_complete_version(version)
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parts = 2 if version[2] == 0 else 3
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return '.'.join(str(x) for x in version[:parts])
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def get_complete_version(version=None):
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"""
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Return a tuple of the django version. If version argument is non-empty,
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check for correctness of the tuple provided.
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"""
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if version is None:
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from django import VERSION as version
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else:
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assert len(version) == 5
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assert version[3] in ('alpha', 'beta', 'rc', 'final')
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return version
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def get_docs_version(version=None):
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version = get_complete_version(version)
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if version[3] != 'final':
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return 'dev'
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else:
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return '%d.%d' % version[:2]
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@functools.lru_cache()
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def get_git_changeset():
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"""Return a numeric identifier of the latest git changeset.
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The result is the UTC timestamp of the changeset in YYYYMMDDHHMMSS format.
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This value isn't guaranteed to be unique, but collisions are very unlikely,
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so it's sufficient for generating the development version numbers.
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"""
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repo_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
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git_log = subprocess.run(
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['git', 'log', '--pretty=format:%ct', '--quiet', '-1', 'HEAD'],
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stdout=subprocess.PIPE, stderr=subprocess.PIPE,
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shell=True, cwd=repo_dir, universal_newlines=True,
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)
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timestamp = git_log.stdout
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try:
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timestamp = datetime.datetime.utcfromtimestamp(int(timestamp))
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except ValueError:
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return None
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return timestamp.strftime('%Y%m%d%H%M%S')
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def get_version_tuple(version):
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"""
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Return a tuple of version numbers (e.g. (1, 2, 3)) from the version
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string (e.g. '1.2.3').
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"""
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loose_version = LooseVersion(version)
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version_numbers = []
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for item in loose_version.version:
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if not isinstance(item, int):
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break
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version_numbers.append(item)
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return tuple(version_numbers)
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