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/* gdbmerrno.c - convert gdbm errors into english. */

/* This file is part of GDBM, the GNU data base manager.
   Copyright (C) 1993, 2007, 2011, 2013, 2016 Free Software Foundation, Inc.

   GDBM 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, or (at your option)
   any later version.

   GDBM 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 GDBM. If not, see <http://www.gnu.org/licenses/>.   */

/* Include system configuration before all else. */
#include "autoconf.h"

#include "gdbmdefs.h"

/* The dbm error number is placed in the variable GDBM_ERRNO. */
gdbm_error gdbm_errno = GDBM_NO_ERROR;

/* Store error code EC in the database structure DBF and in the
   global variable gdbm_error. 
*/
void
gdbm_set_errno (GDBM_FILE dbf, gdbm_error ec, int fatal)
{
  if (dbf)
    {
      dbf->last_error = ec;
      dbf->fatal = fatal;
    }
  gdbm_errno = ec;
}

/* Retrieve last error code for the database DBF. */
int
gdbm_last_errno (GDBM_FILE dbf)
{
  if (!dbf)
    {
      errno = EINVAL;
      return -1;
    }
  return dbf->last_error;
}

/* Clear error state for the database DBF. */
void
gdbm_clear_error (GDBM_FILE dbf)
{
  if (dbf) 
    dbf->last_error = GDBM_NO_ERROR;
}

/* this is not static so that applications may access the array if they
   like. */

const char * const gdbm_errlist[_GDBM_MAX_ERRNO+1] = {
  [GDBM_NO_ERROR]               = N_("No error"),
  [GDBM_MALLOC_ERROR]           = N_("Malloc error"),
  [GDBM_BLOCK_SIZE_ERROR]       = N_("Block size error"),
  [GDBM_FILE_OPEN_ERROR]        = N_("File open error"),
  [GDBM_FILE_WRITE_ERROR]       = N_("File write error"),
  [GDBM_FILE_SEEK_ERROR]        = N_("File seek error"),
  [GDBM_FILE_READ_ERROR]        = N_("File read error"),
  [GDBM_BAD_MAGIC_NUMBER]       = N_("Bad magic number"),
  [GDBM_EMPTY_DATABASE]         = N_("Empty database"),
  [GDBM_CANT_BE_READER]         = N_("Can't be reader"),
  [GDBM_CANT_BE_WRITER]         = N_("Can't be writer"),
  [GDBM_READER_CANT_DELETE]     = N_("Reader can't delete"),
  [GDBM_READER_CANT_STORE]      = N_("Reader can't store"),
  [GDBM_READER_CANT_REORGANIZE] = N_("Reader can't reorganize"),
  [GDBM_UNKNOWN_UPDATE]         = N_("Unknown update"),
  [GDBM_ITEM_NOT_FOUND]         = N_("Item not found"),
  [GDBM_REORGANIZE_FAILED]      = N_("Reorganize failed"),
  [GDBM_CANNOT_REPLACE]         = N_("Cannot replace"),
  [GDBM_ILLEGAL_DATA]           = N_("Illegal data"),
  [GDBM_OPT_ALREADY_SET]        = N_("Option already set"),
  [GDBM_OPT_ILLEGAL]            = N_("Illegal option"),
  [GDBM_BYTE_SWAPPED]           = N_("Byte-swapped file"),
  [GDBM_BAD_FILE_OFFSET]        = N_("Wrong file offset"),
  [GDBM_BAD_OPEN_FLAGS]         = N_("Bad file flags"),
  [GDBM_FILE_STAT_ERROR]        = N_("Cannot stat file"),
  [GDBM_FILE_EOF]               = N_("Unexpected end of file"),
  [GDBM_NO_DBNAME]              = N_("Database name not given"),
  [GDBM_ERR_FILE_OWNER]         = N_("Failed to restore file owner"),
  [GDBM_ERR_FILE_MODE]          = N_("Failed to restore file mode"),
};

const char *
gdbm_strerror (gdbm_error error)
{
  if (((int)error < _GDBM_MIN_ERRNO) || ((int)error > _GDBM_MAX_ERRNO))
    {
      return _("Unknown error");
    }
  else
    {
      return gettext (gdbm_errlist[(int)error]);
    }
}

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