52 lines
1.1 KiB
C++
52 lines
1.1 KiB
C++
// Scintilla source code edit control
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/** @file CharacterType.cxx
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** Tests for character type and case-insensitive comparisons.
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**/
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// Copyright 1998-2010 by Neil Hodgson <neilh@scintilla.org>
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// The License.txt file describes the conditions under which this software may be distributed.
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#include <cstdlib>
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#include <cassert>
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#include "CharacterType.h"
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using namespace Scintilla::Internal;
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namespace Scintilla::Internal {
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int CompareCaseInsensitive(const char *a, const char *b) noexcept {
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while (*a && *b) {
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if (*a != *b) {
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const char upperA = MakeUpperCase(*a);
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const char upperB = MakeUpperCase(*b);
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if (upperA != upperB)
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return upperA - upperB;
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}
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a++;
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b++;
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}
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// Either *a or *b is nul
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return *a - *b;
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}
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int CompareNCaseInsensitive(const char *a, const char *b, size_t len) noexcept {
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while (*a && *b && len) {
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if (*a != *b) {
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const char upperA = MakeUpperCase(*a);
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const char upperB = MakeUpperCase(*b);
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if (upperA != upperB)
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return upperA - upperB;
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}
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a++;
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b++;
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len--;
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}
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if (len == 0)
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return 0;
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else
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// Either *a or *b is nul
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return *a - *b;
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}
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}
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