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Annotation of loncom/homework/caparesponse/caparesponse.c, revision 1.7

1.7     ! albertel    1: /* The LearningOnline Network with CAPA 
        !             2:  * CAPA wrapper code
        !             3:  * $Id: gplheader.js,v 1.1 2001/11/29 19:06:47 www Exp $
        !             4:  *
        !             5:  * Copyright Michigan State University Board of Trustees
        !             6:  *
        !             7:  * This file is part of the LearningOnline Network with CAPA (LON-CAPA).
        !             8:  *
        !             9:  * LON-CAPA is free software; you can redistribute it and/or modify
        !            10:  * it under the terms of the GNU General Public License as published by
        !            11:  * the Free Software Foundation; either version 2 of the License, or
        !            12:  * (at your option) any later version.
        !            13:  *
        !            14:  * LON-CAPA is distributed in the hope that it will be useful,
        !            15:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            16:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            17:  * GNU General Public License for more details.
        !            18:  *
        !            19:  * You should have received a copy of the GNU General Public License
        !            20:  * along with LON-CAPA; if not, write to the Free Software
        !            21:  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
        !            22:  *
        !            23:  * /home/httpd/html/adm/gpl.txt
        !            24:  *
        !            25:  * http://www.lon-capa.org/
        !            26:  */
        !            27: 
1.1       albertel   28: #include <capaCommon.h>
1.6       albertel   29: #include <ranlib.h>
                     30: 
                     31: PointsList_t * parse_pts_list (char *pts_list) {
                     32:   PointsList_t *new=NULL, *end=NULL, *beforeend=NULL, *rlist=NULL;
                     33:   char *idx_pts=pts_list;
                     34:   int done=0;
                     35:   /*fprintf(stderr,"ids %s\n",id_list);
                     36:     fprintf(stderr,"pts %s\n",pts_list);*/
                     37:   while (!done) {
                     38:     int idx;
                     39:     /*fprintf(stderr,"pts; %s\n",idx_pts);*/
                     40:     new=gen_ptslist_str(idx_pts);
                     41:     if (!new) break;
                     42:     if (!rlist) { rlist=new; }
                     43:     if (end) { 
                     44:       end->pts_next=new; 
                     45:       idx=end->pts_idx;
                     46:     } else {
                     47:       idx=-1;
                     48:     }
                     49:     end=new;
                     50:     while (end) {
                     51:       idx++;
                     52:       end->pts_idx=idx;
                     53:       /*fprintf(stderr,"end is:%d:%d:%s:%d\n",idx,end->pts_idx,end->pts_str,
                     54: 	end->pts_next);*/
                     55:       beforeend=end;
                     56:       end=end->pts_next;
                     57:     }
                     58:     end=beforeend;
                     59:     idx_pts=strchr(idx_pts,';');
                     60:     if (idx_pts) { idx_pts++; } else { done=1; }
                     61:   }
                     62:   
                     63:   return rlist;
                     64: }
                     65: 
1.1       albertel   66: int caparesponse_capa_check_answer(char *response,char *correct,
                     67: 				   int type,int tol_type,double tolerance,
                     68: 				   int sig_lbound,int sig_ubound, 
                     69: 				   char *ans_fmt, char *unit_str,
1.6       albertel   70: 				   int calc, char *id_list, char *pts_list, 
                     71: 				   char *rndseed)
                     72: 				   
1.1       albertel   73: {
1.6       albertel   74:   long result,seed1,seed2;
1.1       albertel   75:   Problem_t p;
                     76:   char *error=NULL,filename[FILE_NAME_LENGTH];
                     77:   FILE *fp;
                     78: 
1.6       albertel   79:   /*fprintf(stderr,"hi in caparesponse\n");*/
1.1       albertel   80:   /*need to initialize unit parser*/
1.4       albertel   81:   sprintf(filename,"/home/httpd/html/res/adm/includes/capa.units");
1.1       albertel   82:   if ((fp=fopen(filename,"r"))==NULL) {
                     83:     /* printf("Error: can't open %s\n",filename);*/
                     84:       return (-1); 
                     85:   }
                     86:   u_getunit(fp);
                     87:   fclose(fp);
1.6       albertel   88:   /* need to setup random generator (FIXME) should only do this if 
                     89:      it hasn't been yet*/
                     90:   phrtsd(rndseed,&seed1,&seed2);
                     91:   setall(seed1,seed2);
1.1       albertel   92: 
1.6       albertel   93:   /* assign_id_list and assign_pts_list exist in capaGrammerDef.y */
                     94:   p.id_list=NULL;
                     95:   p.pts_list=NULL;
                     96: 
                     97:   if (type == ANSWER_IS_FORMULA) {
                     98:     p.id_list=id_list;
                     99:     p.pts_list=parse_pts_list(pts_list);
                    100:   }
1.2       albertel  101:   p.ans_type   = type;
                    102:   p.answer     = correct;
                    103:   p.tol_type   = tol_type;
                    104:   p.tolerance  = tolerance;
                    105:   p.sig_lbound = sig_lbound;
                    106:   p.sig_ubound = sig_ubound;
                    107:   strncpy(p.ans_fmt,ans_fmt,ANSWER_STRING_LENG-1);
1.5       albertel  108:   if (unit_str[0]!='\0') {
                    109:     strncpy(p.unit_str,unit_str,ANSWER_STRING_LENG-1);
                    110:     p.ans_unit   = u_parse_unit(unit_str);
                    111:   } else {
                    112:     p.unit_str[0]='\0';
                    113:     p.ans_unit=NULL;
                    114:   }
1.2       albertel  115:   p.calc       = calc;
1.1       albertel  116: 
                    117: 
                    118:   result=capa_check_answer(&p,response,&error);
                    119: 
                    120:   if (error!=NULL) {free(error);}
                    121: 
                    122:   return result;
                    123: }