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- /***
- *strstr.c - search for one string inside another
- *
- * Copyright (c) 1985-1997, Microsoft Corporation. All rights reserved.
- *
- *Purpose:
- * defines strstr() - search for one string inside another
- *
- *******************************************************************************/
-
- #include <cruntime.h>
- #include <string.h>
-
- /***
- *char *strstr(string1, string2) - search for string2 in string1
- *
- *Purpose:
- * finds the first occurrence of string2 in string1
- *
- *Entry:
- * char *string1 - string to search in
- * char *string2 - string to search for
- *
- *Exit:
- * returns a pointer to the first occurrence of string2 in
- * string1, or NULL if string2 does not occur in string1
- *
- *Uses:
- *
- *Exceptions:
- *
- *******************************************************************************/
-
- char * __cdecl strstr (
- const char * str1,
- const char * str2
- )
- {
- char *cp = (char *) str1;
- char *s1, *s2;
-
- if ( !*str2 )
- return((char *)str1);
-
- while (*cp)
- {
- s1 = cp;
- s2 = (char *) str2;
-
- while ( *s1 && *s2 && !(*s1-*s2) )
- s1++, s2++;
-
- if (!*s2)
- return(cp);
-
- cp++;
- }
-
- return(NULL);
-
- }
-