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util/CharUtil: add IsLowerAlphaNumericASCII()

This commit is contained in:
Max Kellermann 2022-09-08 11:12:23 +02:00 committed by Max Kellermann
parent b45afd1cab
commit 5b07c8fc6c
1 changed files with 7 additions and 1 deletions
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8
src/util/WCharUtil.hxx
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@ -1,5 +1,5 @@
/*
* Copyright 2011-2020 Max Kellermann <max.kellermann@gmail.com>
* Copyright 2011-2022 Max Kellermann <max.kellermann@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@ -116,6 +116,12 @@ IsAlphaNumericASCII(wchar_t ch) noexcept
return IsAlphaASCII(ch) || IsDigitASCII(ch);
}
constexpr bool
IsLowerAlphaNumericASCII(wchar_t ch) noexcept
{
return IsLowerAlphaASCII(ch) || IsDigitASCII(ch);
}
/**
* Convert the specified ASCII character (0x00..0x7f) to upper case.
* Unlike toupper(), it ignores the system locale.