strnstr(3bsd) - Man pages

strstr(3bsd)                         LOCAL                        strstr(3bsd)

NAME
     strnstr — locate a substring in a string

LIBRARY
     Utility functions from BSD systems (libbsd, -lbsd)

SYNOPSIS
     #include <string.h>
     (See libbsd(7) for include usage.)

     char *
     strnstr(const char *big, const char *little, size_t len);

DESCRIPTION
     The strnstr() function locates the first occurrence of the null-termi-
     nated string little in the string big, where not more than len characters
     are searched.  Characters that appear after a ‘\0’ character are not
     searched.  Since the strnstr() function is a FreeBSD specific API, it
     should only be used when portability is not a concern.

RETURN VALUES
     If little is an empty string, big is returned; if little occurs nowhere
     in big, NULL is returned; otherwise a pointer to the first character of
     the first occurrence of little is returned.

EXAMPLES
     The following sets the pointer ptr to NULL, because only the first 4
     characters of largestring are searched:

           const char *largestring = "Foo Bar Baz";
           const char *smallstring = "Bar";
           char *ptr;

           ptr = strnstr(largestring, smallstring, 4);

SEE ALSO
     strstr(3), strcasestr(3), memchr(3), memmem(3), strchr(3), strcspn(3),
     strpbrk(3), strrchr(3), strsep(3), strspn(3), strtok(3), wcsstr(3)

BSD                            October 11, 2001                            BSD

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