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Diffstat (limited to 'src/CharacterType.cxx')
-rw-r--r-- | src/CharacterType.cxx | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/CharacterType.cxx b/src/CharacterType.cxx new file mode 100644 index 000000000..04d6a2abe --- /dev/null +++ b/src/CharacterType.cxx @@ -0,0 +1,51 @@ +// Scintilla source code edit control +/** @file CharacterType.cxx + ** Tests for character type and case-insensitive comparisons. + **/ +// Copyright 1998-2010 by Neil Hodgson <neilh@scintilla.org> +// The License.txt file describes the conditions under which this software may be distributed. + +#include <cstdlib> +#include <cassert> + +#include "CharacterType.h" + +using namespace Scintilla; + +namespace Scintilla { + +int CompareCaseInsensitive(const char *a, const char *b) noexcept { + while (*a && *b) { + if (*a != *b) { + const char upperA = MakeUpperCase(*a); + const char upperB = MakeUpperCase(*b); + if (upperA != upperB) + return upperA - upperB; + } + a++; + b++; + } + // Either *a or *b is nul + return *a - *b; +} + +int CompareNCaseInsensitive(const char *a, const char *b, size_t len) noexcept { + while (*a && *b && len) { + if (*a != *b) { + const char upperA = MakeUpperCase(*a); + const char upperB = MakeUpperCase(*b); + if (upperA != upperB) + return upperA - upperB; + } + a++; + b++; + len--; + } + if (len == 0) + return 0; + else + // Either *a or *b is nul + return *a - *b; +} + +} |