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/*

FUNCTION

        <<strtok>>---get next token from a string

INDEX

        strtok

INDEX

        strtok_r

ANSI_SYNOPSIS

        #include <string.h>

        char *strtok(char *<[source]>, const char *<[delimiters]>)

        char *strtok_r(char *<[source]>, const char *<[delimiters]>,

                        char **<[lasts]>)

TRAD_SYNOPSIS

        #include <string.h>

        char *strtok(<[source]>, <[delimiters]>)

        char *<[source]>;

        char *<[delimiters]>;

        char *strtok_r(<[source]>, <[delimiters]>, <[lasts]>)

        char *<[source]>;

        char *<[delimiters]>;

        char **<[lasts]>;

DESCRIPTION

        The <<strtok>> function is used to isolate sequential tokens in a

        null-terminated string, <<*<[source]>>>. These tokens are delimited

        in the string by at least one of the characters in <<*<[delimiters]>>>.

        The first time that <<strtok>> is called, <<*<[source]>>> should be

        specified; subsequent calls, wishing to obtain further tokens from

        the same string, should pass a null pointer instead.  The separator

        string, <<*<[delimiters]>>>, must be supplied each time, and may

        change between calls.

        The <<strtok>> function returns a pointer to the beginning of each

        subsequent token in the string, after replacing the separator

        character itself with a NUL character.  When no more tokens remain,

        a null pointer is returned.

        The <<strtok_r>> function has the same behavior as <<strtok>>, except

        a pointer to placeholder <<*[lasts]>> must be supplied by the caller.

RETURNS

        <<strtok>> returns a pointer to the next token, or <<NULL>> if

        no more tokens can be found.

NOTES

        <<strtok>> is unsafe for multi-thread applications.  <<strtok_r>>

        is MT-Safe and should be used instead.

PORTABILITY

<<strtok>> is ANSI C.

<<strtok>> requires no supporting OS subroutines.

QUICKREF

        strtok ansi impure

*/

#include <string.h>

#include <_ansi.h>

#include <reent.h>

#ifndef _REENT_ONLY

char *

_DEFUN (strtok, (s, delim),

        register char *s _AND

        register const char *delim)

{

        return strtok_r (s, delim, &(_REENT->_new._reent._strtok_last));

}

#endif