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kernelbase: Reimplement IsValidLocaleName() using the locale.nls data. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2022-03-24 16:45:24 +01:00
parent fffbe3fcae
commit da125003e6
1 changed files with 34 additions and 3 deletions
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37
dlls/kernelbase/locale.c
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@ -729,6 +729,38 @@ done:
}
static int compare_locale_names( const WCHAR *n1, const WCHAR *n2 )
{
for (;;)
{
WCHAR ch1 = *n1++;
WCHAR ch2 = *n2++;
if (ch1 >= 'a' && ch1 <= 'z') ch1 -= 'a' - 'A';
else if (ch1 == '_') ch1 = '-';
if (ch2 >= 'a' && ch2 <= 'z') ch2 -= 'a' - 'A';
else if (ch2 == '_') ch2 = '-';
if (!ch1 || ch1 != ch2) return ch1 - ch2;
}
}
static const NLS_LOCALE_LCNAME_INDEX *find_lcname_entry( const WCHAR *name )
{
int min = 0, max = locale_table->nb_lcnames - 1;
while (min <= max)
{
int res, pos = (min + max) / 2;
const WCHAR *str = locale_strings + lcnames_index[pos].name;
res = compare_locale_names( name, str + 1 );
if (res < 0) max = pos - 1;
else if (res > 0) min = pos + 1;
else return &lcnames_index[pos];
}
return NULL;
}
/***********************************************************************
* init_locale
*/
@ -5190,9 +5222,8 @@ BOOL WINAPI DECLSPEC_HOTPATCH IsValidLocale( LCID lcid, DWORD flags )
*/
BOOL WINAPI DECLSPEC_HOTPATCH IsValidLocaleName( const WCHAR *locale )
{
LCID lcid;
return !RtlLocaleNameToLcid( locale, &lcid, 2 );
if (locale == LOCALE_NAME_USER_DEFAULT) return FALSE;
return !!find_lcname_entry( locale );
}