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Diffstat (limited to 'newlib/libc/stdio/ungetwc.c')
-rw-r--r--newlib/libc/stdio/ungetwc.c117
1 files changed, 0 insertions, 117 deletions
diff --git a/newlib/libc/stdio/ungetwc.c b/newlib/libc/stdio/ungetwc.c
deleted file mode 100644
index a69449eb2..000000000
--- a/newlib/libc/stdio/ungetwc.c
+++ /dev/null
@@ -1,117 +0,0 @@
-/*-
- * Copyright (c) 2002-2004 Tim J. Robbins.
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
- */
-
-/*
-FUNCTION
-<<ungetwc>>---push wide character data back into a stream
-
-INDEX
- ungetwc
-INDEX
- _ungetwc_r
-
-ANSI_SYNOPSIS
- #include <stdio.h>
- #include <wchar.h>
- wint_t ungetwc(wint_t <[wc]>, FILE *<[stream]>);
-
- wint_t _ungetwc_r(struct _reent *<[reent]>, wint_t <[wc]>, FILE *<[stream]>);
-
-DESCRIPTION
-<<ungetwc>> is used to return wide characters back to <[stream]> to be
-read again. If <[wc]> is WEOF, the stream is unchanged. Otherwise, the
-wide character <[wc]> is put back on the stream, and subsequent reads will see
-the wide chars pushed back in reverse order. Pushed wide chars are lost if the
-stream is repositioned, such as by <<fseek>>, <<fsetpos>>, or
-<<rewind>>.
-
-The underlying file is not changed, but it is possible to push back
-something different than what was originally read. Ungetting a
-character will clear the end-of-stream marker, and decrement the file
-position indicator. Pushing back beyond the beginning of a file gives
-unspecified behavior.
-
-The alternate function <<_ungetwc_r>> is a reentrant version. The
-extra argument <[reent]> is a pointer to a reentrancy structure.
-
-RETURNS
-The wide character pushed back, or <<WEOF>> on error.
-
-PORTABILITY
-C99
-*/
-
-#include <_ansi.h>
-#include <reent.h>
-#include <errno.h>
-#include <limits.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <wchar.h>
-#include "local.h"
-
-wint_t
-_DEFUN(_ungetwc_r, (ptr, wc, fp),
- struct _reent *ptr _AND
- wint_t wc _AND
- register FILE *fp)
-{
- char buf[MB_LEN_MAX];
- size_t len;
-
- _newlib_flockfile_start (fp);
- ORIENT (fp, 1);
- if (wc == WEOF)
- wc = WEOF;
- else if ((len = _wcrtomb_r(ptr, buf, wc, &fp->_mbstate)) == (size_t)-1)
- {
- fp->_flags |= __SERR;
- wc = WEOF;
- }
- else
- while (len-- != 0)
- if (_ungetc_r(ptr, (unsigned char)buf[len], fp) == EOF)
- {
- wc = WEOF;
- break;
- }
- _newlib_flockfile_end (fp);
- return wc;
-}
-
-/*
- * MT-safe version.
- */
-wint_t
-_DEFUN(ungetwc, (wint_t wc, FILE *fp),
- wint_t wc _AND
- FILE *fp)
-{
- struct _reent *reent = _REENT;
-
- CHECK_INIT (reent, fp);
- return _ungetwc_r (reent, wc, fp);
-}