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/* GNU Mailutils -- a suite of utilities for electronic mail
   Copyright (C) 1999-2001, 2004-2005, 2007-2008, 2010-2012, 2014-2017
   Free Software Foundation, Inc.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 3 of the License, 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General
   Public License along with this library.  If not, see 
   <http://www.gnu.org/licenses/>. */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <mailutils/types.h>
#include <mailutils/errno.h>
#include <mailutils/sys/property.h>

int
mu_property_set_value (mu_property_t prop, const char *key,
		       const char *value, int overwrite)
{
  int rc;
  
  if (!value)
    rc = mu_property_unset (prop, key);
  else
    {
      rc = _mu_property_check (prop);
      if (rc)
	return rc;
      if (!prop->_prop_setval)
	return MU_ERR_EMPTY_VFN;
      rc = prop->_prop_setval (prop, key, value, overwrite);
      if (rc == 0)
	prop->_prop_flags |= MU_PROP_MODIFIED;
    }
  return rc;
}

int
mu_property_unset (mu_property_t prop, const char *key)
{
  int rc = _mu_property_check (prop);
  if (rc)
    return rc;
  if (!prop->_prop_unset)
    return MU_ERR_EMPTY_VFN;
  rc = prop->_prop_unset (prop, key);
  if (rc == 0)
    prop->_prop_flags |= MU_PROP_MODIFIED;
  return rc;
}

int
mu_property_set (mu_property_t prop, const char *key)
{
  return mu_property_set_value (prop, key, "", 1);
}

  

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