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/* TABLIX, PGA general timetable solver */
/* Copyright (C) 2002-2006 Tomaz Solc */
/* 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 2 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, write to the Free Software */
/* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/* $Id: export_vcal.c,v 1.2 2006-02-04 14:41:54 avian Exp $ */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define _XOPEN_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <time.h>
#include "export.h"
static int days, periods;
static int timeid;
static struct tm *start_time;
int event_length;
static struct tm *add_tm(struct tm *a, int days, int periods)
{
struct tm *dest;
time_t a1,c1;
a1=mktime(a);
c1=a1+days*24*60*60+periods*event_length*60;
dest=gmtime(&c1);
return(dest);
}
static void export_date(struct tm *a, FILE *out)
{
char d[256];
strftime(d, 256, "%Y%m%dT%H%M%S", a);
fprintf(out, "%s", d);
}
static void export_event(table *tab, int tupleid, FILE *out)
{
int day, period;
struct tm *start, *end;
day=tab->chr[timeid].gen[tupleid]/periods;
period=tab->chr[timeid].gen[tupleid]%periods;
start=add_tm(start_time, day, period);
end=add_tm(start_time, day, period+1);
fprintf(out, "BEGIN:VEVENT\r\n");
fprintf(out, "DTSTART:");
export_date(start, out);
// fprintf(out, "\r\nDTEND:");
// export_date(end, out);
fprintf(out, "\r\nSUMMARY:%s\r\n", dat_tuplemap[tupleid].name);
fprintf(out, "DESCRIPTION:Lecture\r\n");
fprintf(out, "RRULE:FREQ=WEEKLY;INTERVAL=1\r\n");
fprintf(out, "DURATION:PT%dM\r\n", event_length);
fprintf(out, "END:VEVENT\r\n");
}
int export_function(table *tab, moduleoption *opt, char *file)
{
resourcetype *time;
FILE *out;
int resid;
int typeid;
int n;
char *option, *r;
int tupleid;
assert(tab!=NULL);
time=restype_find("time");
if(time==NULL) {
error(_("Can't find resource type '%s'."), "time");
return -1;
}
timeid=time->typeid;
if(res_get_matrix(time, &days, &periods)) {
error(_("Resource type '%s' is not a matrix."), "time");
return -1;
}
if(days>7) {
error(_("Sorry, only timetables with less than 7 days per week are currently supported."));
return -1;
}
start_time=calloc(sizeof(*start_time), 1);
if(start_time==NULL) {
error(_("Can't allocate memory"));
return -1;
}
option=option_str(opt, "starttime");
if(option==NULL) {
error(_("Please specify '%s' option"), "starttime");
return -1;
}
r=strptime(option, "%Y%m%dT%H%M%S", start_time);
if(r==NULL) {
error(_("Contents of the 'starttime' option do not "
"contain a valid date"));
return -1;
}
option=option_str(opt, "length");
if(option==NULL) {
error(_("Please specify '%s' option"), "length");
return -1;
}
n=sscanf(option, "%d", &event_length);
if(n!=1||event_length<1) {
error(_("Contents of the 'length' option do not "
"contain a valid event length"));
return -1;
}
option=option_str(opt, "restype");
if(option==NULL) {
error(_("Please specify '%s' option"), "restype");
return -1;
}
typeid=restype_findid(option);
if(typeid==INT_MIN) {
error(_("Can't find resource type '%s'."), option);
return -1;
}
option=option_str(opt, "resource");
if(option==NULL) {
error(_("Please specify '%s' option"), "resource");
return -1;
}
resid=res_findid(&dat_restype[typeid], option);
if(resid==INT_MIN) {
error(_("Can't find resource '%s'."), option);
return -1;
}
if(file==NULL) {
out=stdout;
} else {
out=fopen(file, "w");
if(out==NULL) fatal(strerror(errno));
}
fprintf(out, "BEGIN:VCALENDAR\r\n");
fprintf(out, "VERSION:2.0\r\n");
fprintf(out, "PRODID:-//Tablix//export_vcal.so 0.3.1//EN\r\n");
for(tupleid=0;tupleid<dat_tuplenum;tupleid++) {
if(dat_tuplemap[tupleid].resid[typeid]==resid) {
export_event(tab, tupleid, out);
}
}
fprintf(out, "END:VCALENDAR\r\n");
if(out!=stdout) fclose(out);
return 0;
}
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