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85 lines
2.6 KiB
Python
85 lines
2.6 KiB
Python
"""
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Constants for generating the layout.
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"""
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__author__ = "Steve Dower <steve.dower@python.org>"
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__version__ = "3.8"
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import os
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import pathlib
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import re
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import struct
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import sys
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def _unpack_hexversion():
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try:
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hexversion = int(os.getenv("PYTHON_HEXVERSION"), 16)
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return struct.pack(">i", hexversion)
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except (TypeError, ValueError):
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pass
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if os.getenv("PYTHONINCLUDE"):
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try:
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return _read_patchlevel_version(pathlib.Path(os.getenv("PYTHONINCLUDE")))
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except OSError:
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pass
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return struct.pack(">i", sys.hexversion)
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def _get_suffix(field4):
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name = {0xA0: "a", 0xB0: "b", 0xC0: "rc"}.get(field4 & 0xF0, "")
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if name:
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serial = field4 & 0x0F
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return f"{name}{serial}"
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return ""
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def _read_patchlevel_version(sources):
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if not sources.match("Include"):
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sources /= "Include"
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values = {}
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with open(sources / "patchlevel.h", "r", encoding="utf-8") as f:
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for line in f:
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m = re.match(r'#\s*define\s+(PY_\S+?)\s+(\S+)', line.strip(), re.I)
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if m and m.group(2):
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v = m.group(2)
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if v.startswith('"'):
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v = v[1:-1]
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else:
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v = values.get(v, v)
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if isinstance(v, str):
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try:
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v = int(v, 16 if v.startswith("0x") else 10)
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except ValueError:
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pass
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values[m.group(1)] = v
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return (
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values["PY_MAJOR_VERSION"],
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values["PY_MINOR_VERSION"],
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values["PY_MICRO_VERSION"],
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values["PY_RELEASE_LEVEL"] << 4 | values["PY_RELEASE_SERIAL"],
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)
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def check_patchlevel_version(sources):
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got = _read_patchlevel_version(sources)
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if got != (VER_MAJOR, VER_MINOR, VER_MICRO, VER_FIELD4):
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return f"{got[0]}.{got[1]}.{got[2]}{_get_suffix(got[3])}"
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VER_MAJOR, VER_MINOR, VER_MICRO, VER_FIELD4 = _unpack_hexversion()
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VER_SUFFIX = _get_suffix(VER_FIELD4)
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VER_FIELD3 = VER_MICRO << 8 | VER_FIELD4
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VER_DOT = "{}.{}".format(VER_MAJOR, VER_MINOR)
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PYTHON_DLL_NAME = "python{}{}.dll".format(VER_MAJOR, VER_MINOR)
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PYTHON_STABLE_DLL_NAME = "python{}.dll".format(VER_MAJOR)
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PYTHON_ZIP_NAME = "python{}{}.zip".format(VER_MAJOR, VER_MINOR)
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PYTHON_PTH_NAME = "python{}{}._pth".format(VER_MAJOR, VER_MINOR)
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PYTHON_CHM_NAME = "python{}{}{}{}.chm".format(
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VER_MAJOR, VER_MINOR, VER_MICRO, VER_SUFFIX
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)
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FREETHREADED_PYTHON_DLL_NAME = "python{}{}t.dll".format(VER_MAJOR, VER_MINOR)
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FREETHREADED_PYTHON_STABLE_DLL_NAME = "python{}t.dll".format(VER_MAJOR)
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