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/* The 'libkal' library for date conversion.
* Copyright (C) 1996-1998 Petr Tomasek <tomasek@etf.cuni.cz>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* This provides checks, whether given date is valid.
* Note, that this already converts the date to the jd, so that
* you need not to convert it again.
*/
#include "kal_main.h"
#include "kal_procs.h"
int kal_general_check(int d,int m,int y) {
if ((d<1) || (d>32)) return 1; /* does anybody know about calendar
system, that can have more than
31 days per month ? */
if ((m<0) || (m>13)) return 1; /* does anybody know about calendar
system, that can have more then
13 months per year ? */
return 0;
}
/*
* kal_xxx_check
*/
int kal_xxx_check(long *jd, int d, int m, int y, int sys) {
int dd,mm,yy;
if (kal_general_check(d,m,y)) return 1;
*jd=kal_conv_xxx_jd(d,m,y,sys);
kal_conv_jd_xxx(*jd,&dd,&mm,&yy,sys);
if ((d!=dd) || (m!=mm) || (y!=yy)) return 1;
return 0;
}
/* julianic */
int kal_jul_check(long *jd, int d, int m, int y) {
return kal_xxx_check (jd, d, m, y, KAL_JUL);
}
/* gregorianic */
int kal_gre_check(long *jd, int d, int m, int y) {
return kal_xxx_check (jd, d, m, y, KAL_GRE);
}
/* arabic */
int kal_ar_check(long *jd, int d, int m, int y) {
return kal_xxx_check (jd, d, m, y, KAL_AR);
}
/* jewish */
int kal_jew_check(long *jd, int d, int m, int y) {
return kal_xxx_check (jd, d, m, y, KAL_JEW);
}
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