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35 lines
774 B
C
35 lines
774 B
C
/* File : strstr.c
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Author : Monty
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Updated: 1986.11.24
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Defines: strstr()
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strstr(src, pat) looks for an instance of pat in src. pat is not a
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regex(3) pattern, it is a literal string which must be matched exactly.
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The result is a pointer to the first character of the located instance,
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or NullS if pat does not occur in src.
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*/
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#include <my_global.h>
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#include "m_string.h"
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#ifndef HAVE_STRSTR
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char *strstr(register const char *str,const char *search)
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{
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register char *i,*j;
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register char first= *search;
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skipp:
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while (*str != '\0') {
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if (*str++ == first) {
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i=(char*) str; j=(char*) search+1;
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while (*j)
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if (*i++ != *j++) goto skipp;
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return ((char*) str-1);
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}
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}
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return ((char*) 0);
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} /* strstr */
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#endif
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