stdio-common/printf_buffer_flush.c

   1 /* Flush a struct __printf_buffer.  Multibyte version.
   2    Copyright (C) 2022 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <printf_buffer.h>
  21
  22 #include "printf_buffer-char.h"
  23 #include "Xprintf_buffer_flush.c"
  24
  25 /* The __printf_buffer_flush_* functions are defined together with
  26    functions that are pulled in by strong references.  */
  27 #ifndef SHARED
  28 # pragma weak __printf_buffer_flush_snprintf
  29 # pragma weak __printf_buffer_flush_to_file
  30 # pragma weak __printf_buffer_flush_fp
  31 # pragma weak __printf_buffer_flush_fp_to_wide
  32 # pragma weak __printf_buffer_flush_fphex_to_wide
  33 #endif /* !SHARED */
  34
  35 static void
  36 __printf_buffer_do_flush (struct __printf_buffer *buf)
  37 {
  38   switch (buf->mode)
  39     {
  40     case __printf_buffer_mode_failed:
  41     case __printf_buffer_mode_sprintf:
  42       return;
  43     case __printf_buffer_mode_snprintf:
  44       __printf_buffer_flush_snprintf ((struct __printf_buffer_snprintf *) buf);
  45       return;
  46     case __printf_buffer_mode_sprintf_chk:
  47       __chk_fail ();
  48       break;
  49     case __printf_buffer_mode_to_file:
  50       __printf_buffer_flush_to_file ((struct __printf_buffer_to_file *) buf);
  51       return;
  52     case __printf_buffer_mode_strfmon:
  53       __set_errno (E2BIG);
  54       __printf_buffer_mark_failed (buf);
  55       return;
  56     case __printf_buffer_mode_fp:
  57       __printf_buffer_flush_fp ((struct __printf_buffer_fp *) buf);
  58       return;
  59     case __printf_buffer_mode_fp_to_wide:
  60       __printf_buffer_flush_fp_to_wide
  61         ((struct __printf_buffer_fp_to_wide *) buf);
  62       return;
  63     case __printf_buffer_mode_fphex_to_wide:
  64       __printf_buffer_flush_fphex_to_wide
  65         ((struct __printf_buffer_fphex_to_wide *) buf);
  66       return;
  67     }
  68   __builtin_trap ();
  69 }