88 lines
3.5 KiB
C
88 lines
3.5 KiB
C
/************************************************************
|
|
* lib_strtok.c
|
|
*
|
|
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
************************************************************/
|
|
|
|
/************************************************************
|
|
* Included Files
|
|
************************************************************/
|
|
|
|
#include <string.h>
|
|
|
|
/************************************************************
|
|
* Private Data
|
|
************************************************************/
|
|
|
|
static char *g_saveptr = NULL;
|
|
|
|
/************************************************************
|
|
* Public Functions
|
|
************************************************************/
|
|
|
|
/************************************************************
|
|
* Name: strtok
|
|
*
|
|
* Description:
|
|
* The strtok() function parses a string into a
|
|
* sequence of tokens. On the first call to strtok() the
|
|
* string to be parsed should be specified in 'str'. In
|
|
* each subsequent call that should parse the same string,
|
|
* 'str' should be NULL.
|
|
*
|
|
* The 'delim' argument specifies a set of characters that
|
|
* delimit the tokens in the parsed string. The caller
|
|
* may specify different strings in delim in successive
|
|
* calls that parse the same string.
|
|
*
|
|
* Each call to strtok() returns a pointer to a null-
|
|
* terminated string containing the next token. This
|
|
* string does not include the delimiting character. If
|
|
* no more tokens are found, strtok() returns NULL.
|
|
*
|
|
* A sequence of two or more contiguous delimiter
|
|
* characters in the parsed string is considered to be a
|
|
* single delimiter. Delimiter characters at the start or
|
|
* end of the string are ignored. The tokens returned by
|
|
* strtok() are always non-empty strings.
|
|
*
|
|
* Return
|
|
* strtok() returns a pointer to the next token, or NULL
|
|
* if there are no more tokens.
|
|
*
|
|
************************************************************/
|
|
|
|
char *strtok(char *str, const char *delim)
|
|
{
|
|
return strtok_r(str, delim, &g_saveptr);
|
|
}
|