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Function to get number formatting characters on windows

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This commit is contained in:
Kovid Goyal 2016-06-06 16:04:28 +05:30
parent f06ce03121
commit 7f6ade6be0
1 changed files with 23 additions and 0 deletions
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23
src/calibre/constants.py
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@ -308,3 +308,26 @@ def get_windows_user_locale_name():
return None
return u'_'.join(buf.value.split(u'-')[:2])
number_formats = None
def get_windows_number_formats():
global number_formats
if number_formats is None:
import ctypes
from ctypes.wintypes import DWORD
k32 = ctypes.windll.kernel32
n = 25
buf = ctypes.create_unicode_buffer(u'\0'*n)
k32.GetNumberFormatEx.argtypes = [ctypes.c_wchar_p, DWORD, ctypes.c_wchar_p, ctypes.c_void_p, ctypes.c_wchar_p, ctypes.c_int]
if k32.GetNumberFormatEx(None, 0, u'123456.7', None, buf, n) == 0:
raise ctypes.WinError()
src = buf.value
thousands_sep, decimal_point = u',.'
idx = src.find(u'3')
if idx > -1 and src[idx+1] != u'4':
thousands_sep = src[idx+1]
idx = src.find(u'6')
if idx > -1 and src[idx+1] != u'7':
decimal_point = src[idx+1]
number_formats = (thousands_sep, decimal_point)
return number_formats