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/* TABLIX, PGA general timetable solver */
/* Copyright (C) 2002-2005 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: sametimeas.c,v 1.5 2006-08-29 14:32:24 avian Exp $ */
/** @module
*
* @author Tomaz Solc
* @author-email tomaz.solc@tablix.org
*
* @credits
* Module ported to 0.2.x kernel and extended by
* Nick Robinson <npr@bottlehall.co.uk>
* Modified to use updater functions by Antonio Duran
*
* @brief Adds support for scheduleding events at the same time.
* This module uses updater functions, so the weight and mandatory
* values are ignored.
*
* @ingroup School scheduling
*/
/** @tuple-restriction same-time-as
*
* <restriction type="same-time-as">event name</restriction>
*
* This restriction specifies that the current event needs to be scheduled
* at the same time as the event identified in the restriction.
*
* <event name="a" repeats="4">
* ...
* <restriction type="same-time-as">b</restriction>
* </event>
* <event name="b" repeats="5">
* ...
* </event>
*
* In this case, four events "a" are scheduled at the same time as four events
* "b". The fifth event "b" can be scheduled at any time.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "module.h"
struct sametime {
int tupleid1;
int tupleid2;
};
static struct sametime *sa;
static int numsa;
static int time;
static int event_used(int tupleid2) {
int n;
for(n=0;n<numsa;n++) {
if(sa[n].tupleid2==tupleid2) return(1);
}
return(0);
}
int getevent(char *restriction, char *cont, tupleinfo *tuple)
{
int tupleid1, tupleid2, tupleid;
int found;
if(strlen(cont)<=0) {
error(_("restriction '%s' requires an argument"),
"same-time-as");
return(-1);
}
tupleid1=tuple->tupleid;
tupleid2=-1;
found=0;
for(tupleid=0;tupleid<dat_tuplenum;tupleid++) {
if(!strcmp(dat_tuplemap[tupleid].name,cont)) {
found=1;
if(!event_used(tupleid)) {
tupleid2=tupleid;
break;
}
}
}
if(!found) {
error(_("No events match name '%s' "
"in 'same-time-as' restriction"), cont);
return(-1);
}
if(tupleid2==-1) {
error(_("Repeats for this event must be less or equal "
"than the target event '%s' in 'same-time-as' "
"restriction"), cont);
return(-1);
}
if(tupleid1==tupleid2) {
error(_("Source and target events for 'same-time-as' "
"restriction are the same event"));
return(-1);
}
sa[numsa].tupleid1=tupleid1;
sa[numsa].tupleid2=tupleid2;
numsa++;
return 0;
}
int updater(int src, int dst, int typeid, int resid)
{
return(resid);
}
int module_precalc(moduleoption *opt)
{
int c;
for(c=0;c<numsa;c++) {
if(updater_check(sa[c].tupleid2, time)) {
error(_("Event '%s' already depends on another "
"event"), dat_tuplemap[sa[c].tupleid2].name);
}
updater_new(sa[c].tupleid1, sa[c].tupleid2, time, updater);
}
return(0);
}
int module_init(moduleoption *opt)
{
int c, days, periods;
sa=malloc(sizeof(*sa)*dat_tuplenum);
if(sa==NULL) {
error(_("Can't allocate memory"));
return -1;
}
numsa=0;
time=restype_findid("time");
if(time<0) {
error(_("Resource type '%s' not found"), "time");
return -1;
}
c=res_get_matrix(restype_find("time"), &days, &periods);
if(c) {
error(_("Resource type 'time' is not a matrix"));
return -1;
}
precalc_new(module_precalc);
handler_tup_new("same-time-as", getevent);
return(0);
}
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