home *** CD-ROM | disk | FTP | other *** search
- /* derived from strncmp from Henry Spencer's stringlib */
- /* revised by ERS */
- /* i-changes by Alexander Lehmann */
-
- #include <string.h>
- #include <ctype.h>
-
- /*
- * strnicmp - compare at most n characters of string s1 to s2 without case
- * result is equivalent to strcmp(strupr(s1),s2)),
- * but doesn't change anything
- */
-
- #ifdef __GNUC__
- asm(".stabs \"_strncmpi\",5,0,0,_strnicmp"); /* dept of clean tricks */
- #endif
-
- int /* <0 for <, 0 for ==, >0 for > */
- strnicmp(scan1, scan2, n)
- register const char *scan1;
- register const char *scan2;
- size_t n;
- {
- register char c1, c2;
- register long count;
-
- if (!scan1) {
- return scan2 ? -1 : 0;
- }
- if (!scan2) return 1;
- count = n;
- do {
- c1 = *scan1++; c1=toupper(c1);
- c2 = *scan2++; c2=toupper(c2);
- } while (--count >= 0 && c1 && c1 == c2);
-
- if (count < 0)
- return(0);
-
- /*
- * The following case analysis is necessary so that characters
- * which look negative collate low against normal characters but
- * high against the end-of-string NUL.
- */
- if (c1 == c2)
- return(0);
- else if (c1 == '\0')
- return(-1);
- else if (c2 == '\0')
- return(1);
- else
- return(c1 - c2);
- }
-
- #ifndef __GNUC__
- int
- strncmpi(scan1, scan2, n)
- register const char *scan1;
- register const char *scan2;
- size_t n;
- {
- return strnicmp(scan1, scan2, n);
- }
- #endif
-