67 lines
1.3 KiB
C++
67 lines
1.3 KiB
C++
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// Scintilla source code edit control
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/** @file CharacterSet.cxx
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** Simple case functions for ASCII.
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** Lexer infrastructure.
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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 <string_view>
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#include "CharacterSet.h"
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using namespace Lexilla;
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namespace Lexilla {
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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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bool EqualCaseInsensitive(std::string_view a, std::string_view b) noexcept {
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if (a.length() != b.length()) {
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return false;
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}
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for (size_t i = 0; i < a.length(); i++) {
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if (MakeUpperCase(a[i]) != MakeUpperCase(b[i])) {
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return false;
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}
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}
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return true;
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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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