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https://github.com/voiceip/tinyphone
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34 lines
1.2 KiB
C++
Executable file
34 lines
1.2 KiB
C++
Executable file
/**
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* Include file for a wide string class with case-insensitive compares.
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*
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* This code adapted from a StackOverflow topic
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* "Case insensitive string comparison in C++"
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*
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* See http://stackoverflow.com/questions/11635/case-insensitive-string-comparison-in-c
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*/
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//
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#pragma once
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#include <string>
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struct ci_wchar_t_traits : public std::char_traits<wchar_t> {
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static bool eq(wchar_t c1, wchar_t c2) { return toupper(c1) == toupper(c2); }
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static bool ne(wchar_t c1, wchar_t c2) { return toupper(c1) != toupper(c2); }
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static bool lt(wchar_t c1, wchar_t c2) { return toupper(c1) < toupper(c2); }
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static int compare(const wchar_t* s1, const wchar_t* s2, size_t n) {
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while( n-- != 0 ) {
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if( toupper(*s1) < toupper(*s2) ) return -1;
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if( toupper(*s1) > toupper(*s2) ) return 1;
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++s1; ++s2;
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}
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return 0;
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}
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static const wchar_t* find(const wchar_t* s, int n, wchar_t a) {
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while( n-- > 0 && toupper(*s) != toupper(a) ) {
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++s;
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}
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return (n >= 0 ? s : NULL);
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}
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};
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//* Wide string class with case-insensitive compares.
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typedef std::basic_string<wchar_t, ci_wchar_t_traits> ci_wstring;
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