77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
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/*
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FUNCTION
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<<strtok>>---get next token from a string
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INDEX
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strtok
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INDEX
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strtok_r
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ANSI_SYNOPSIS
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#include <string.h>
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char *strtok(char *<[source]>, const char *<[delimiters]>)
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char *strtok_r(char *<[source]>, const char *<[delimiters]>,
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char **<[lasts]>)
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TRAD_SYNOPSIS
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#include <string.h>
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char *strtok(<[source]>, <[delimiters]>)
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char *<[source]>;
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char *<[delimiters]>;
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char *strtok_r(<[source]>, <[delimiters]>, <[lasts]>)
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char *<[source]>;
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char *<[delimiters]>;
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char **<[lasts]>;
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DESCRIPTION
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The <<strtok>> function is used to isolate sequential tokens in a
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null-terminated string, <<*<[source]>>>. These tokens are delimited
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in the string by at least one of the characters in <<*<[delimiters]>>>.
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The first time that <<strtok>> is called, <<*<[source]>>> should be
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specified; subsequent calls, wishing to obtain further tokens from
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the same string, should pass a null pointer instead. The separator
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string, <<*<[delimiters]>>>, must be supplied each time, and may
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change between calls.
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The <<strtok>> function returns a pointer to the beginning of each
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subsequent token in the string, after replacing the separator
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character itself with a NUL character. When no more tokens remain,
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a null pointer is returned.
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The <<strtok_r>> function has the same behavior as <<strtok>>, except
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a pointer to placeholder <<*[lasts]>> must be supplied by the caller.
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RETURNS
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<<strtok>> returns a pointer to the next token, or <<NULL>> if
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no more tokens can be found.
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NOTES
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<<strtok>> is unsafe for multi-thread applications. <<strtok_r>>
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is MT-Safe and should be used instead.
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PORTABILITY
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<<strtok>> is ANSI C.
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<<strtok>> requires no supporting OS subroutines.
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QUICKREF
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strtok ansi impure
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*/
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#include <string.h>
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#include <_ansi.h>
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#include <reent.h>
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#ifndef _REENT_ONLY
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char *
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_DEFUN (strtok, (s, delim),
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register char *s _AND
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register const char *delim)
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{
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return strtok_r (s, delim, &(_REENT->_new._reent._strtok_last));
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}
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#endif
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