/*
     This file is part of GNUnet.
     (C) 2005 Christian Grothoff (and other contributing authors)

     GNUnet 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.

     GNUnet 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 GNUnet; see the file COPYING.  If not, write to the
     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
     Boston, MA 02111-1307, USA.
*/

/**
 * @file src/plugins/fs/helper.c
 * @brief helper functions (parsing)
 * @author Christian Grothoff
 */

#include "platform.h"
#include "helper.h"

/**
 * Parse a time given in the form
 * "XX seconds yy days zz months".
 *
 * @param val set to the computed time
 * @return OK on success, SYSERR on error
 */
int parseTime(const char * t,
	      TIME_T * param) {
  int pos;
  int start;
  unsigned int val;
  char * tmp;
  cron_t ret;

  ret = 0;
  pos = 0;

  while (t[pos] != '\0') {
    start = pos;
    while ( (t[pos] != ' ') &&
	    (t[pos] != '\0') )
      pos++;
    tmp = STRNDUP(&t[start],
		  pos - start);
    if (1 != sscanf(tmp,
		    "%u",
		    &val) )
      return -1; /* parse error */
    FREE(tmp);
    while ( t[pos] == ' ')
      pos++;
    start = pos;
    while ( (t[pos] != ' ') &&
	    (t[pos] != '\0') )
      pos++;
    if (0 == strncasecmp(&t[start],
			 _("ms"),
			 strlen(_("ms"))))
      ret += cronMILLIS * val;
    if (0 == strncasecmp(&t[start],
			 _("minutes"),
			 strlen(_("minutes"))))
      ret += cronMINUTES * val;
    else if (0 == strncasecmp(&t[start],
			      _("seconds"),
			      strlen(_("seconds"))))
      ret += cronSECONDS * val;
    else if (0 == strncasecmp(&t[start],
			      _("hours"),
			      strlen(_("hours"))))
      ret += cronHOURS * val;
    else if (0 == strncasecmp(&t[start],
			      _("days"),
			      strlen(_("days"))))
      ret += cronDAYS  * val;
    else
      return SYSERR; /* parse error */
    while ( t[pos] == ' ')
      pos++;
  }
  *param = ret / cronSECONDS;
  return OK;
}