+++ /dev/null
-/* Copyright (C) 1993, 1995, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
- This file is part of the GNU IO Library.
- Written by Ulrich Drepper <drepper@cygnus.com>.
- Based on the single byte version by Per Bothner <bothner@cygnus.com>.
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2, or (at
- your option) any later version.
-
- This library is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this library; see the file COPYING. If not, write to
- the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
- MA 02111-1307, USA.
-
- As a special exception, if you link this library with files
- compiled with a GNU compiler to produce an executable, this does
- not cause the resulting executable to be covered by the GNU General
- Public License. This exception does not however invalidate any
- other reasons why the executable file might be covered by the GNU
- General Public License. */
-
-/* Generic or default I/O operations. */
-
-#include "libioP.h"
-#ifdef _GLIBCPP_USE_WCHAR_T
-#ifdef __STDC__
-#include <stdlib.h>
-#endif
-#include <string.h>
-#include <wchar.h>
-
-
-#ifndef _LIBC
-# define __wmemcpy(dst, src, n) wmemcpy (dst, src, n)
-#endif
-
-
-static int save_for_wbackup __P ((_IO_FILE *fp, wchar_t *end_p))
-#ifdef _LIBC
- internal_function
-#endif
- ;
-
-/* Return minimum _pos markers
- Assumes the current get area is the main get area. */
-_IO_ssize_t _IO_least_wmarker __P ((_IO_FILE *fp, wchar_t *end_p));
-
-_IO_ssize_t
-_IO_least_wmarker (fp, end_p)
- _IO_FILE *fp;
- wchar_t *end_p;
-{
- _IO_ssize_t least_so_far = end_p - fp->_wide_data->_IO_read_base;
- struct _IO_marker *mark;
- for (mark = fp->_markers; mark != NULL; mark = mark->_next)
- if (mark->_pos < least_so_far)
- least_so_far = mark->_pos;
- return least_so_far;
-}
-
-/* Switch current get area from backup buffer to (start of) main get area. */
-void
-_IO_switch_to_main_wget_area (fp)
- _IO_FILE *fp;
-{
- wchar_t *tmp;
- fp->_flags &= ~_IO_IN_BACKUP;
- /* Swap _IO_read_end and _IO_save_end. */
- tmp = fp->_wide_data->_IO_read_end;
- fp->_wide_data->_IO_read_end = fp->_wide_data->_IO_save_end;
- fp->_wide_data->_IO_save_end= tmp;
- /* Swap _IO_read_base and _IO_save_base. */
- tmp = fp->_wide_data->_IO_read_base;
- fp->_wide_data->_IO_read_base = fp->_wide_data->_IO_save_base;
- fp->_wide_data->_IO_save_base = tmp;
- /* Set _IO_read_ptr. */
- fp->_wide_data->_IO_read_ptr = fp->_wide_data->_IO_read_base;
-}
-
-
-/* Switch current get area from main get area to (end of) backup area. */
-void
-_IO_switch_to_wbackup_area (fp)
- _IO_FILE *fp;
-{
- wchar_t *tmp;
- fp->_flags |= _IO_IN_BACKUP;
- /* Swap _IO_read_end and _IO_save_end. */
- tmp = fp->_wide_data->_IO_read_end;
- fp->_wide_data->_IO_read_end = fp->_wide_data->_IO_save_end;
- fp->_wide_data->_IO_save_end = tmp;
- /* Swap _IO_read_base and _IO_save_base. */
- tmp = fp->_wide_data->_IO_read_base;
- fp->_wide_data->_IO_read_base = fp->_wide_data->_IO_save_base;
- fp->_wide_data->_IO_save_base = tmp;
- /* Set _IO_read_ptr. */
- fp->_wide_data->_IO_read_ptr = fp->_wide_data->_IO_read_end;
-}
-
-
-void
-_IO_wsetb (f, b, eb, a)
- _IO_FILE *f;
- wchar_t *b;
- wchar_t *eb;
- int a;
-{
- if (f->_wide_data->_IO_buf_base && !(f->_flags & _IO_USER_BUF))
- FREE_BUF (f->_wide_data->_IO_buf_base, _IO_wblen (f));
- f->_wide_data->_IO_buf_base = b;
- f->_wide_data->_IO_buf_end = eb;
- if (a)
- f->_flags &= ~_IO_USER_BUF;
- else
- f->_flags |= _IO_USER_BUF;
-}
-
-
-wint_t
-_IO_wdefault_pbackfail (fp, c)
- _IO_FILE *fp;
- wint_t c;
-{
- if (fp->_wide_data->_IO_read_ptr > fp->_wide_data->_IO_read_base
- && !_IO_in_backup (fp)
- && (wint_t) fp->_IO_read_ptr[-1] == c)
- --fp->_IO_read_ptr;
- else
- {
- /* Need to handle a filebuf in write mode (switch to read mode). FIXME!*/
- if (!_IO_in_backup (fp))
- {
- /* We need to keep the invariant that the main get area
- logically follows the backup area. */
- if (fp->_wide_data->_IO_read_ptr > fp->_wide_data->_IO_read_base
- && _IO_have_wbackup (fp))
- {
- if (save_for_wbackup (fp, fp->_wide_data->_IO_read_ptr))
- return WEOF;
- }
- else if (!_IO_have_wbackup (fp))
- {
- /* No backup buffer: allocate one. */
- /* Use nshort buffer, if unused? (probably not) FIXME */
- int backup_size = 128;
- wchar_t *bbuf = (wchar_t *) malloc (backup_size
- * sizeof (wchar_t));
- if (bbuf == NULL)
- return WEOF;
- fp->_wide_data->_IO_save_base = bbuf;
- fp->_wide_data->_IO_save_end = (fp->_wide_data->_IO_save_base
- + backup_size);
- fp->_wide_data->_IO_backup_base = fp->_wide_data->_IO_save_end;
- }
- fp->_wide_data->_IO_read_base = fp->_wide_data->_IO_read_ptr;
- _IO_switch_to_wbackup_area (fp);
- }
- else if (fp->_wide_data->_IO_read_ptr <= fp->_wide_data->_IO_read_base)
- {
- /* Increase size of existing backup buffer. */
- _IO_size_t new_size;
- _IO_size_t old_size = (fp->_wide_data->_IO_read_end
- - fp->_wide_data->_IO_read_base);
- wchar_t *new_buf;
- new_size = 2 * old_size;
- new_buf = (wchar_t *) malloc (new_size * sizeof (wchar_t));
- if (new_buf == NULL)
- return WEOF;
- __wmemcpy (new_buf + (new_size - old_size),
- fp->_wide_data->_IO_read_base, old_size);
- free (fp->_wide_data->_IO_read_base);
- _IO_wsetg (fp, new_buf, new_buf + (new_size - old_size),
- new_buf + new_size);
- fp->_wide_data->_IO_backup_base = fp->_wide_data->_IO_read_ptr;
- }
-
- *--fp->_wide_data->_IO_read_ptr = c;
- }
- return c;
-}
-
-
-void
-_IO_wdefault_finish (fp, dummy)
- _IO_FILE *fp;
- int dummy;
-{
- struct _IO_marker *mark;
- if (fp->_wide_data->_IO_buf_base && !(fp->_flags & _IO_USER_BUF))
- {
- FREE_BUF (fp->_wide_data->_IO_buf_base,
- _IO_wblen (fp) * sizeof (wchar_t));
- fp->_wide_data->_IO_buf_base = fp->_wide_data->_IO_buf_end = NULL;
- }
-
- for (mark = fp->_markers; mark != NULL; mark = mark->_next)
- mark->_sbuf = NULL;
-
- if (fp->_IO_save_base)
- {
- free (fp->_wide_data->_IO_save_base);
- fp->_IO_save_base = NULL;
- }
-
-#ifdef _IO_MTSAFE_IO
- _IO_lock_fini (*fp->_lock);
-#endif
-
- _IO_un_link ((struct _IO_FILE_plus *) fp);
-}
-
-
-wint_t
-_IO_wdefault_uflow (fp)
- _IO_FILE *fp;
-{
- wint_t wch;
- wch = _IO_UNDERFLOW (fp);
- if (wch == WEOF)
- return WEOF;
- return *fp->_wide_data->_IO_read_ptr++;
-}
-
-
-wint_t
-__woverflow (f, wch)
- _IO_FILE *f;
- wint_t wch;
-{
- if (f->_mode == 0)
- _IO_fwide (f, 1);
- return _IO_OVERFLOW (f, wch);
-}
-
-
-wint_t
-__wuflow (fp)
- _IO_FILE *fp;
-{
- if (fp->_mode < 0 || (fp->_mode == 0 && _IO_fwide (fp, 1) != 1))
- return WEOF;
-
- if (fp->_mode == 0)
- _IO_fwide (fp, 1);
- if (_IO_in_put_mode (fp))
- if (_IO_switch_to_wget_mode (fp) == EOF)
- return WEOF;
- if (fp->_wide_data->_IO_read_ptr < fp->_wide_data->_IO_read_end)
- return *fp->_wide_data->_IO_read_ptr++;
- if (_IO_in_backup (fp))
- {
- _IO_switch_to_main_wget_area (fp);
- if (fp->_wide_data->_IO_read_ptr < fp->_wide_data->_IO_read_end)
- return *fp->_wide_data->_IO_read_ptr++;
- }
- if (_IO_have_markers (fp))
- {
- if (save_for_wbackup (fp, fp->_wide_data->_IO_read_end))
- return WEOF;
- }
- else if (_IO_have_wbackup (fp))
- _IO_free_wbackup_area (fp);
- return _IO_UFLOW (fp);
-}
-
-
-wint_t
-__wunderflow (fp)
- _IO_FILE *fp;
-{
- if (fp->_mode < 0 || (fp->_mode == 0 && _IO_fwide (fp, 1) != 1))
- return WEOF;
-
- if (fp->_mode == 0)
- _IO_fwide (fp, 1);
- if (_IO_in_put_mode (fp))
- if (_IO_switch_to_wget_mode (fp) == EOF)
- return WEOF;
- if (fp->_wide_data->_IO_read_ptr < fp->_wide_data->_IO_read_end)
- return *fp->_wide_data->_IO_read_ptr;
- if (_IO_in_backup (fp))
- {
- _IO_switch_to_main_wget_area (fp);
- if (fp->_wide_data->_IO_read_ptr < fp->_wide_data->_IO_read_end)
- return *fp->_wide_data->_IO_read_ptr;
- }
- if (_IO_have_markers (fp))
- {
- if (save_for_wbackup (fp, fp->_wide_data->_IO_read_end))
- return WEOF;
- }
- else if (_IO_have_backup (fp))
- _IO_free_wbackup_area (fp);
- return _IO_UNDERFLOW (fp);
-}
-
-
-_IO_size_t
-_IO_wdefault_xsputn (f, data, n)
- _IO_FILE *f;
- const void *data;
- _IO_size_t n;
-{
- const wchar_t *s = (const wchar_t *) data;
- _IO_size_t more = n;
- if (more <= 0)
- return 0;
- for (;;)
- {
- /* Space available. */
- _IO_ssize_t count = (f->_wide_data->_IO_write_end
- - f->_wide_data->_IO_write_ptr);
- if (count > 0)
- {
- if ((_IO_size_t) count > more)
- count = more;
- if (count > 20)
- {
-#ifdef _LIBC
- f->_wide_data->_IO_write_ptr =
- __wmempcpy (f->_wide_data->_IO_write_ptr, s, count);
-#else
- memcpy (f->_wide_data->_IO_write_ptr, s, count);
- f->_wide_data->_IO_write_ptr += count;
-#endif
- s += count;
- }
- else if (count <= 0)
- count = 0;
- else
- {
- wchar_t *p = f->_wide_data->_IO_write_ptr;
- _IO_ssize_t i;
- for (i = count; --i >= 0; )
- *p++ = *s++;
- f->_wide_data->_IO_write_ptr = p;
- }
- more -= count;
- }
- if (more == 0 || __woverflow (f, *s++) == WEOF)
- break;
- more--;
- }
- return n - more;
-}
-
-
-_IO_size_t
-_IO_wdefault_xsgetn (fp, data, n)
- _IO_FILE *fp;
- void *data;
- _IO_size_t n;
-{
- _IO_size_t more = n;
- wchar_t *s = (wchar_t*) data;
- for (;;)
- {
- /* Data available. */
- _IO_ssize_t count = (fp->_wide_data->_IO_read_end
- - fp->_wide_data->_IO_read_ptr);
- if (count > 0)
- {
- if ((_IO_size_t) count > more)
- count = more;
- if (count > 20)
- {
-#ifdef _LIBC
- s = __wmempcpy (s, fp->_wide_data->_IO_read_ptr, count);
-#else
- memcpy (s, fp->_wide_data->_IO_read_ptr, count);
- s += count;
-#endif
- fp->_wide_data->_IO_read_ptr += count;
- }
- else if (count <= 0)
- count = 0;
- else
- {
- wchar_t *p = fp->_wide_data->_IO_read_ptr;
- int i = (int) count;
- while (--i >= 0)
- *s++ = *p++;
- fp->_wide_data->_IO_read_ptr = p;
- }
- more -= count;
- }
- if (more == 0 || __wunderflow (fp) == WEOF)
- break;
- }
- return n - more;
-}
-
-
-void
-_IO_wdoallocbuf (fp)
- _IO_FILE *fp;
-{
- if (fp->_wide_data->_IO_buf_base)
- return;
- if (!(fp->_flags & _IO_UNBUFFERED))
- if (_IO_DOALLOCATE (fp) != WEOF)
- return;
- _IO_wsetb (fp, fp->_wide_data->_shortbuf, fp->_wide_data->_shortbuf + 1, 0);
-}
-
-
-_IO_FILE *
-_IO_wdefault_setbuf (fp, p, len)
- _IO_FILE *fp;
- wchar_t *p;
- _IO_ssize_t len;
-{
- if (_IO_SYNC (fp) == EOF)
- return NULL;
- if (p == NULL || len == 0)
- {
- fp->_flags |= _IO_UNBUFFERED;
- _IO_wsetb (fp, fp->_wide_data->_shortbuf, fp->_wide_data->_shortbuf + 1,
- 0);
- }
- else
- {
- fp->_flags &= ~_IO_UNBUFFERED;
- _IO_wsetb (fp, p, p + len, 0);
- }
- fp->_wide_data->_IO_write_base = fp->_wide_data->_IO_write_ptr
- = fp->_wide_data->_IO_write_end = 0;
- fp->_wide_data->_IO_read_base = fp->_wide_data->_IO_read_ptr
- = fp->_wide_data->_IO_read_end = 0;
- return fp;
-}
-
-
-int
-_IO_wdefault_doallocate (fp)
- _IO_FILE *fp;
-{
- wchar_t *buf;
-
- ALLOC_WBUF (buf, _IO_BUFSIZ, EOF);
- _IO_wsetb (fp, buf, buf + _IO_BUFSIZ, 1);
- return 1;
-}
-
-
-int
-_IO_switch_to_wget_mode (fp)
- _IO_FILE *fp;
-{
- if (fp->_wide_data->_IO_write_ptr > fp->_wide_data->_IO_write_base)
- if (_IO_OVERFLOW (fp, WEOF) == WEOF)
- return EOF;
- if (_IO_in_backup (fp))
- fp->_wide_data->_IO_read_base = fp->_wide_data->_IO_backup_base;
- else
- {
- fp->_wide_data->_IO_read_base = fp->_wide_data->_IO_buf_base;
- if (fp->_wide_data->_IO_write_ptr > fp->_wide_data->_IO_read_end)
- fp->_wide_data->_IO_read_end = fp->_wide_data->_IO_write_ptr;
- }
- fp->_wide_data->_IO_read_ptr = fp->_wide_data->_IO_write_ptr;
-
- fp->_wide_data->_IO_write_base = fp->_wide_data->_IO_write_ptr
- = fp->_wide_data->_IO_write_end = fp->_wide_data->_IO_read_ptr;
-
- fp->_flags &= ~_IO_CURRENTLY_PUTTING;
- return 0;
-}
-
-void
-_IO_free_wbackup_area (fp)
- _IO_FILE *fp;
-{
- if (_IO_in_backup (fp))
- _IO_switch_to_main_wget_area (fp); /* Just in case. */
- free (fp->_wide_data->_IO_save_base);
- fp->_wide_data->_IO_save_base = NULL;
- fp->_wide_data->_IO_save_end = NULL;
- fp->_wide_data->_IO_backup_base = NULL;
-}
-
-#if 0
-int
-_IO_switch_to_wput_mode (fp)
- _IO_FILE *fp;
-{
- fp->_wide_data->_IO_write_base = fp->_wide_data->_IO_read_ptr;
- fp->_wide_data->_IO_write_ptr = fp->_wide_data->_IO_read_ptr;
- /* Following is wrong if line- or un-buffered? */
- fp->_wide_data->_IO_write_end = (fp->_flags & _IO_IN_BACKUP
- ? fp->_wide_data->_IO_read_end
- : fp->_wide_data->_IO_buf_end);
-
- fp->_wide_data->_IO_read_ptr = fp->_wide_data->_IO_read_end;
- fp->_wide_data->_IO_read_base = fp->_wide_data->_IO_read_end;
-
- fp->_flags |= _IO_CURRENTLY_PUTTING;
- return 0;
-}
-#endif
-
-
-static int
-#ifdef _LIBC
-internal_function
-#endif
-save_for_wbackup (fp, end_p)
- _IO_FILE *fp;
- wchar_t *end_p;
-{
- /* Append [_IO_read_base..end_p] to backup area. */
- _IO_ssize_t least_mark = _IO_least_wmarker (fp, end_p);
- /* needed_size is how much space we need in the backup area. */
- _IO_size_t needed_size = ((end_p - fp->_wide_data->_IO_read_base)
- - least_mark);
- /* FIXME: Dubious arithmetic if pointers are NULL */
- _IO_size_t current_Bsize = (fp->_wide_data->_IO_save_end
- - fp->_wide_data->_IO_save_base);
- _IO_size_t avail; /* Extra space available for future expansion. */
- _IO_ssize_t delta;
- struct _IO_marker *mark;
- if (needed_size > current_Bsize)
- {
- wchar_t *new_buffer;
- avail = 100;
- new_buffer = (wchar_t *) malloc ((avail + needed_size)
- * sizeof (wchar_t));
- if (new_buffer == NULL)
- return EOF; /* FIXME */
- if (least_mark < 0)
- {
-#ifdef _LIBC
- __wmempcpy (__wmempcpy (new_buffer + avail,
- fp->_wide_data->_IO_save_end + least_mark,
- -least_mark),
- fp->_wide_data->_IO_read_base,
- end_p - fp->_wide_data->_IO_read_base);
-#else
- memcpy (new_buffer + avail,
- fp->_wide_data->_IO_save_end + least_mark,
- -least_mark * sizeof (wchar_t));
- memcpy (new_buffer + avail - least_mark,
- fp->_wide_data->_IO_read_base,
- (end_p - fp->_wide_data->_IO_read_base) * sizeof (wchar_t));
-#endif
- }
- else
- {
-#ifdef _LIBC
- __wmemcpy (new_buffer + avail,
- fp->_wide_data->_IO_read_base + least_mark,
- needed_size);
-#else
- memcpy (new_buffer + avail,
- fp->_wide_data->_IO_read_base + least_mark,
- needed_size * sizeof (wchar_t));
-#endif
- }
- if (fp->_wide_data->_IO_save_base)
- free (fp->_wide_data->_IO_save_base);
- fp->_wide_data->_IO_save_base = new_buffer;
- fp->_wide_data->_IO_save_end = new_buffer + avail + needed_size;
- }
- else
- {
- avail = current_Bsize - needed_size;
- if (least_mark < 0)
- {
-#ifdef _LIBC
- __wmemmove (fp->_wide_data->_IO_save_base + avail,
- fp->_wide_data->_IO_save_end + least_mark,
- -least_mark);
- __wmemcpy (fp->_wide_data->_IO_save_base + avail - least_mark,
- fp->_wide_data->_IO_read_base,
- end_p - fp->_wide_data->_IO_read_base);
-#else
- memmove (fp->_wide_data->_IO_save_base + avail,
- fp->_wide_data->_IO_save_end + least_mark,
- -least_mark * sizeof (wchar_t));
- memcpy (fp->_wide_data->_IO_save_base + avail - least_mark,
- fp->_wide_data->_IO_read_base,
- (end_p - fp->_wide_data->_IO_read_base) * sizeof (wchar_t));
-#endif
- }
- else if (needed_size > 0)
-#ifdef _LIBC
- __wmemcpy (fp->_wide_data->_IO_save_base + avail,
- fp->_wide_data->_IO_read_base + least_mark,
- needed_size);
-#else
- memcpy (fp->_wide_data->_IO_save_base + avail,
- fp->_wide_data->_IO_read_base + least_mark,
- needed_size * sizeof (wchar_t));
-#endif
- }
- fp->_wide_data->_IO_backup_base = fp->_wide_data->_IO_save_base + avail;
- /* Adjust all the streammarkers. */
- delta = end_p - fp->_wide_data->_IO_read_base;
- for (mark = fp->_markers; mark != NULL; mark = mark->_next)
- mark->_pos -= delta;
- return 0;
-}
-
-wint_t
-_IO_sputbackwc (fp, c)
- _IO_FILE *fp;
- wint_t c;
-{
- wint_t result;
-
- if (fp->_wide_data->_IO_read_ptr > fp->_wide_data->_IO_read_base
- && (wchar_t)fp->_wide_data->_IO_read_ptr[-1] == (wchar_t) c)
- {
- fp->_wide_data->_IO_read_ptr--;
- result = c;
- }
- else
- result = _IO_PBACKFAIL (fp, c);
-
- if (result != EOF)
- fp->_flags &= ~_IO_EOF_SEEN;
-
- return result;
-}
-
-wint_t
-_IO_sungetwc (fp)
- _IO_FILE *fp;
-{
- int result;
-
- if (fp->_wide_data->_IO_read_ptr > fp->_wide_data->_IO_read_base)
- {
- fp->_wide_data->_IO_read_ptr--;
- result = *fp->_wide_data->_IO_read_ptr;
- }
- else
- result = _IO_PBACKFAIL (fp, EOF);
-
- if (result != WEOF)
- fp->_flags &= ~_IO_EOF_SEEN;
-
- return result;
-}
-
-
-unsigned
-_IO_adjust_wcolumn (start, line, count)
- unsigned start;
- const wchar_t *line;
- int count;
-{
- const wchar_t *ptr = line + count;
- while (ptr > line)
- if (*--ptr == L'\n')
- return line + count - ptr - 1;
- return start + count;
-}
-
-void
-_IO_init_wmarker (marker, fp)
- struct _IO_marker *marker;
- _IO_FILE *fp;
-{
- marker->_sbuf = fp;
- if (_IO_in_put_mode (fp))
- _IO_switch_to_wget_mode (fp);
- if (_IO_in_backup (fp))
- marker->_pos = fp->_wide_data->_IO_read_ptr - fp->_wide_data->_IO_read_end;
- else
- marker->_pos = (fp->_wide_data->_IO_read_ptr
- - fp->_wide_data->_IO_read_base);
-
- /* Should perhaps sort the chain? */
- marker->_next = fp->_markers;
- fp->_markers = marker;
-}
-
-#define BAD_DELTA EOF
-
-/* Return difference between MARK and current position of MARK's stream. */
-int
-_IO_wmarker_delta (mark)
- struct _IO_marker *mark;
-{
- int cur_pos;
- if (mark->_sbuf == NULL)
- return BAD_DELTA;
- if (_IO_in_backup (mark->_sbuf))
- cur_pos = (mark->_sbuf->_wide_data->_IO_read_ptr
- - mark->_sbuf->_wide_data->_IO_read_end);
- else
- cur_pos = (mark->_sbuf->_wide_data->_IO_read_ptr
- - mark->_sbuf->_wide_data->_IO_read_base);
- return mark->_pos - cur_pos;
-}
-
-int
-_IO_seekwmark (fp, mark, delta)
- _IO_FILE *fp;
- struct _IO_marker *mark;
- int delta;
-{
- if (mark->_sbuf != fp)
- return EOF;
- if (mark->_pos >= 0)
- {
- if (_IO_in_backup (fp))
- _IO_switch_to_main_wget_area (fp);
- fp->_wide_data->_IO_read_ptr = (fp->_wide_data->_IO_read_base
- + mark->_pos);
- }
- else
- {
- if (!_IO_in_backup (fp))
- _IO_switch_to_wbackup_area (fp);
- fp->_wide_data->_IO_read_ptr = fp->_wide_data->_IO_read_end + mark->_pos;
- }
- return 0;
-}
-
-void
-_IO_unsave_wmarkers (fp)
- _IO_FILE *fp;
-{
- struct _IO_marker *mark = fp->_markers;
- if (mark)
- {
-#ifdef TODO
- streampos offset = seekoff (0, ios::cur, ios::in);
- if (offset != EOF)
- {
- offset += eGptr () - Gbase ();
- for ( ; mark != NULL; mark = mark->_next)
- mark->set_streampos (mark->_pos + offset);
- }
- else
- {
- for ( ; mark != NULL; mark = mark->_next)
- mark->set_streampos (EOF);
- }
-#endif
- fp->_markers = 0;
- }
-
- if (_IO_have_backup (fp))
- _IO_free_wbackup_area (fp);
-}
-
-#endif /* _GLIBCPP_USE_WCHAR_T */
projects / msp430-gcc.git / blobdiff