kc3-lang/gnulib/lib/dprintf.c

• Show log

  Commit

• Hash : 5b3a6f94
  Author :
  Date : 2021-03-25T12:41:41
  

  free-posix: use more often in other modules
  
  This lets us simplify cleanup code that calls ‘free’.
  * lib/amemxfrm.c (amemxfrm):
  * lib/areadlink-with-size.c (areadlink_with_size):
  * lib/areadlinkat-with-size.c (areadlinkat_with_size):
  * lib/astrxfrm.c (astrxfrm):
  * lib/dprintf.c (dprintf):
  * lib/execute.c (execute):
  * lib/execvpe.c (execvpe):
  * lib/fchdir.c (get_name):
  * lib/file-has-acl.c (file_has_acl):
  * lib/fprintf.c (fprintf):
  * lib/getcwd-lgpl.c (rpl_getcwd):
  * lib/getgroups.c (rpl_getgroups):
  * lib/link.c (link, rpl_link):
  * lib/linkat.c (link_immediate, link_follow, linkat_follow):
  * lib/localename.c (newlocale, duplocale):
  * lib/mgetgroups.c (mgetgroups):
  * lib/mountlist.c (read_file_system_list):
  * lib/pipe-filter-gi.c (pipe_filter_gi_close):
  * lib/putenv.c (_unsetenv, putenv):
  * lib/read-file.c (read_file):
  * lib/rename.c (rpl_rename):
  * lib/savedir.c (streamsavedir, savedir):
  * lib/spawni.c (do_open, __spawni):
  * lib/spawn-pipe.c (create_pipe):
  * lib/striconv.c (mem_cd_iconv, str_cd_iconv, str_iconv):
  * lib/striconveh.c (mem_cd_iconveh_internal, str_cd_iconveh)
  (mem_iconveh, str_iconveh):
  * lib/supersede.c (open_supersede, close_supersede):
  * lib/vasnprintf.c (VASNPRINTF):
  * lib/vdprintf.c (vdprintf):
  * lib/vfprintf.c (vfprintf):
  * lib/wcscoll-impl.h (wcscoll):
  * lib/wcsxfrm-impl.h (wcsxfrm):
  * lib/xgetdomainname.c (xgetdomainname):
  * lib/xgethostname.c (xgethostname):
  Simplify by assuming that ‘free’ preserves errno.
  * lib/localename.c: Do not include errno.h.
  * modules/amemxfrm, modules/areadlink-with-size:
  * modules/areadlinkat-with-size, modules/astrxfrm:
  * modules/c-vasnprintf, modules/dprintf, modules/execute:
  * modules/execvpe, modules/fchdir, modules/file-has-acl:
  * modules/fprintf-posix, modules/getcwd-lgpl, modules/getgroups:
  * modules/link, modules/linkat, modules/localename:
  * modules/mgetgroups, modules/mountlist, modules/pipe-filter-gi:
  * modules/posix_spawn-internal, modules/putenv, modules/read-file:
  * modules/rename, modules/savedir, modules/spawn-pipe:
  * modules/striconv, modules/striconveh, modules/supersede:
  * modules/vasnprintf, modules/vdprintf, modules/vfprintf-posix:
  * modules/wcscoll, modules/wcsxfrm, modules/xgetdomainname:
  * modules/xgethostname:
  Depend on free-posix.
  

Download

• lib/dprintf.c

• /* Formatted output to a file descriptor.
     Copyright (C) 2009-2021 Free Software Foundation, Inc.
  
     This program 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 3 of the License, or
     (at your option) any later version.
  
     This program 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 program.  If not, see <https://www.gnu.org/licenses/>.  */
  
  #ifdef HAVE_CONFIG_H
  # include <config.h>
  #endif
  
  /* Specification.  */
  #include <stdio.h>
  
  #include <errno.h>
  #include <limits.h>
  #include <stdarg.h>
  #include <stdlib.h>
  
  #include "full-write.h"
  #include "vasnprintf.h"
  
  int
  dprintf (int fd, const char *format, ...)
  {
    char buf[2000];
    char *output;
    size_t len;
    size_t lenbuf = sizeof (buf);
    va_list args;
  
    va_start (args, format);
    output = vasnprintf (buf, &lenbuf, format, args);
    len = lenbuf;
    va_end (args);
  
    if (!output)
      return -1;
  
    if (full_write (fd, output, len) < len)
      {
        if (output != buf)
          free (output);
        return -1;
      }
  
    if (output != buf)
      free (output);
  
    if (len > INT_MAX)
      {
        errno = EOVERFLOW;
        return -1;
      }
  
    return len;
  }
  

Download