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Diffstat (limited to 'newlib/libc/string/wcstok.c')
| -rw-r--r-- | newlib/libc/string/wcstok.c | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/newlib/libc/string/wcstok.c b/newlib/libc/string/wcstok.c deleted file mode 100644 index de38d3a55..000000000 --- a/newlib/libc/string/wcstok.c +++ /dev/null @@ -1,181 +0,0 @@ -/* -FUNCTION - <<wcstok>>---get next token from a string - -INDEX - wcstok - - -ANSI_SYNOPSIS - #include <wchar.h> - wchar_t *wcstok(wchar_t *<[source]>, const wchar_t *<[delimiters]>, - wchar_t **<[lasts]>) - -TRAD_SYNOPSIS - #include <wchar.h> - wchar_t *wcstok(<[source]>, <[delimiters]>, <[lasts]>) - wchar_t *<[source]>; - wchar_t *<[delimiters]>; - wchar_t **<[lasts]>; - -DESCRIPTION - The <<wcstok>> function is the wide-character equivalent of the - <<strtok_r>> function (which in turn is the same as the <<strtok>> - function with an added argument to make it thread-safe). - - The <<wcstok>> function is used to isolate (one at a time) - sequential tokens in a null-terminated wide-character string, - <<*<[source]>>>. A token is defined as a substring not containing - any wide-characters from <<*<[delimiters]>>>. - - The first time that <<wcstok>> is called, <<*<[source]>>> should - be specified with the wide-character string to be searched, and - <<*<[lasts]>>>--but not <<lasts>>, which must be non-NULL--may be - random; subsequent calls, wishing to obtain further tokens from - the same string, should pass a null pointer for <<*<[source]>>> - instead but must supply <<*<[lasts]>>> unchanged from the last - call. The separator wide-character string, <<*<[delimiters]>>>, - must be supplied each time and may change between calls. - A pointer to placeholder <<*<[lasts]>>> must be supplied by - the caller, and is set each time as needed to save the state - by <<wcstok>>. Every call to <<wcstok>> with <<*<[source]>>> - == <<NULL>> must pass the value of <<*<[lasts]>>> as last set - by <<wcstok>>. - - The <<wcstok>> function returns a pointer to the beginning of each - subsequent token in the string, after replacing the separator - wide-character itself with a null wide-character. When no more tokens - remain, a null pointer is returned. - -RETURNS - <<wcstok>> returns a pointer to the first wide character of a token, or - <<NULL>> if there is no token. - -NOTES - <<wcstok>> is thread-safe (unlike <<strtok>>, but like <<strtok_r>>). - <<wcstok>> writes into the string being searched. - -PORTABILITY -<<wcstok>> is C99 and POSIX.1-2001. - -<<wcstok>> requires no supporting OS subroutines. - -QUICKREF - strtok ansi pure -*/ -/* wcstok for Newlib created by adapting strtok_r, 2008. */ -/* - * 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. 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. - */ - -#include <wchar.h> - -wchar_t * -_DEFUN (wcstok, (s, delim, lasts), - register wchar_t *s _AND - register const wchar_t *delim _AND - wchar_t **lasts) -{ - register const wchar_t *spanp; - register int c, sc; - wchar_t *tok; - - - if (s == NULL && (s = *lasts) == NULL) - return (NULL); - - /* - * Skip (span) leading delimiters (s += wcsspn(s, delim), sort of). - */ -cont: - c = *s++; - for (spanp = delim; (sc = *spanp++) != L'\0';) { - if (c == sc) goto cont; - } - - if (c == L'\0') { /* no non-delimiter characters */ - *lasts = NULL; - return (NULL); - } - tok = s - 1; - - /* - * Scan token (scan for delimiters: s += wcscspn(s, delim), sort of). - * Note that delim must have one NUL; we stop if we see that, too. - */ - for (;;) { - c = *s++; - spanp = delim; - do { - if ((sc = *spanp++) == c) { - if (c == L'\0') - s = NULL; - else - s[-1] = L'\0'; - *lasts = s; - return (tok); - } - } while (sc != L'\0'); - } - /* NOTREACHED */ -} - -/* The remainder of this file can serve as a regression test. Compile - * with -D_REGRESSION_TEST. */ -#if defined(_REGRESSION_TEST) /* [Test code: example from C99 standard */ -#include <stdio.h> -#include <wchar.h> - -/* example from C99 standard with minor additions to be a test */ -int -main(void) -{ -int errs=0; -static wchar_t str1[] = L"?a???b,,,#c"; -static wchar_t str2[] = L"\t \t"; -wchar_t *t, *ptr1, *ptr2; - -t = wcstok(str1, L"?", &ptr1); // t points to the token L"a" -if(wcscmp(t,L"a")) errs++; -t = wcstok(NULL, L",", &ptr1); // t points to the token L"??b" -if(wcscmp(t,L"??b")) errs++; -t = wcstok(str2, L" \t", &ptr2); // t is a null pointer -if(t != NULL) errs++; -t = wcstok(NULL, L"#,", &ptr1); // t points to the token L"c" -if(wcscmp(t,L"c")) errs++; -t = wcstok(NULL, L"?", &ptr1); // t is a null pointer -if(t != NULL) errs++; - -printf("wcstok() test "); -if(errs) printf("FAILED %d test cases", errs); - else printf("passed"); -printf(".\n"); - -return(errs); -} -#endif /* defined(_REGRESSION_TEST) ] */ |