diff -r 000000000000 -r bde4ae8d615e os/ossrv/genericopenlibs/cstdlib/LCHAR/STRTOK.C --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/os/ossrv/genericopenlibs/cstdlib/LCHAR/STRTOK.C Fri Jun 15 03:10:57 2012 +0200 @@ -0,0 +1,162 @@ +/* +* FUNCTION +* <>---get next token from a string +* INDEX +* strtok +* INDEX +* strtok_r +* ANSI_SYNOPSIS +* #include +* char *strtok(char *<[source]>, const char *<[delimiters]>) +* char *strtok_r(char *<[source]>, const char *<[delimiters]>, +* char **<[lasts]>) +* TRAD_SYNOPSIS +* #include +* char *strtok(<[source]>, <[delimiters]>) +* char *<[source]>; +* char *<[delimiters]>; +* char *strtok_r(<[source]>, <[delimiters]>, <[lasts]>) +* char *<[source]>; +* char *<[delimiters]>; +* char **<[lasts]>; +* A series of calls to <> break the string starting at +* <<*<[source]>>> into a sequence of tokens. The tokens are +* delimited from one another by characters from the string at +* <<*<[delimiters]>>>, at the outset. +* The first call to <> normally has a string address as +* the first argument; subsequent calls can use <> as the +* first argument, to continue searching the same string. You +* can continue searching a single string with different +* delimiters by using a different delimiter string on each call. +* <> begins by searching for any character not in the +* <[delimiters]> string: the first such character is the +* beginning of a token (and its address will be the result of +* the <> call). <> then continues searching +* until it finds another delimiter character; it replaces that +* character by <> and returns. (If <> comes to +* the end of the <<*<[source]>>> string without finding any more +* delimiters, the entire remainder of the string is treated as +* the next token). +* <> starts its search at <<*<[source]>>>, unless you +* pass <> as the first argument; if <[source]> is +* <>, <> continues searching from the end of the +* last search. Exploiting the <> first argument leads to +* non-reentrant code. You can easily circumvent this problem by +* saving the last delimiter address in your application, and +* always using it to pass a non-null <[source]> argument. +* RETURNS +* <> returns a pointer to the next token, or <> if +* no more tokens can be found. +* PORTABILITY +* <> is ANSI C. +* <> requires no supporting OS subroutines. +* QUICKREF +* strtok ansi impure +* +* +*/ + + + +#include +#include + +/** +Sequentially truncate string if delimiter is found. +If string is not NULL, the function scans string for the first occurrence of +any character included in delimiters. If it is found, the function overwrites +the delimiter in string by a null-character and returns a pointer to the token, +i.e. the part of the scanned string previous to the delimiter. +After a first call to strtok, the function may be called with NULL as string parameter, +and it will follow by where the last call to strtok found a delimiter. +@return A pointer to the last token found in string. +NULL is returned when there are no more tokens to be found. +@param s Null-terminated string to scan. +@param delim Null-terminated string containing the separators. +*/ +EXPORT_C char * +strtok (register char *s, register const char *delim) +{ + return strtok_r (s, delim, &(_REENT->_scanpoint)); +} + +/* + * Copyright (c) 1988 Regents of the University of California. + * All rights reserved. + * + * 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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. + */ + +EXPORT_C char * +strtok_r (register char *s, register const char *delim, char **lasts) +{ + register char *spanp; + register int c, sc; + char *tok; + + + if (s == NULL && (s = *lasts) == NULL) + return (NULL); + + /* + * Skip (span) leading delimiters (s += strspn(s, delim), sort of). + */ +cont: + c = *s++; + for (spanp = (char *)delim; (sc = *spanp++) != 0;) { + if (c == sc) + goto cont; + } + + if (c == 0) { /* no non-delimiter characters */ + *lasts = NULL; + return (NULL); + } + tok = s - 1; + + /* + * Scan token (scan for delimiters: s += strcspn(s, delim), sort of). + * Note that delim must have one NUL; we stop if we see that, too. + */ + for (;;) { + c = *s++; + spanp = (char *)delim; + do { + if ((sc = *spanp++) == c) { + if (c == 0) + s = NULL; + else + s[-1] = 0; + *lasts = s; + return (tok); + } + } while (sc != 0); + } + /* NOTREACHED */ +}