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Diffstat (limited to 'nuttx/lib/string/lib_strtok.c')
-rw-r--r-- | nuttx/lib/string/lib_strtok.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/nuttx/lib/string/lib_strtok.c b/nuttx/lib/string/lib_strtok.c new file mode 100644 index 000000000..c40993135 --- /dev/null +++ b/nuttx/lib/string/lib_strtok.c @@ -0,0 +1,87 @@ +/**************************************************************************** + * lib/string/lib_strtok.c + * + * Copyright (C) 2007, 2008, 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * 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 NuttX 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); +} |