stricmp.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 63 行

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*                            Open Watcom Project
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#include "variety.h"
#include "widechar.h"
#include <ctype.h>
#include <string.h>
#include "riscstr.h"

/* return <0 if s<t, 0 if s==t, >0 if s>t */

#if defined(__RISCSTR__) && defined(__WIDECHAR__)
 _WCRTLINK int __simple__wcsicmp( const CHAR_TYPE *s, const CHAR_TYPE *t ) {
#else
 _WCRTLINK int __F_NAME(stricmp,_wcsicmp)( const CHAR_TYPE *s, const CHAR_TYPE *t ) {
#endif
    UCHAR_TYPE c1;
    UCHAR_TYPE c2;

    for(;;) {
        c1 = *s;
        c2 = *t;
        if( IS_ASCII( c1 ) && IS_ASCII( c2 ) ) {
            if( c1 >= 'A'  &&  c1 <= 'Z' )  c1 += 'a' - 'A';
            if( c2 >= 'A'  &&  c2 <= 'Z' )  c2 += 'a' - 'A';
        }
        if( c1 != c2 ) break;
        if( c1 == NULLCHAR ) break;
        ++s;
        ++t;
    }
    return( c1 - c2 );
}