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Diff for /loncom/homework/caparesponse/caparesponse.c between versions 1.2 and 1.20

version 1.2, 2000/09/11 21:30:16 version 1.20, 2005/12/20 19:59:52
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   /* The LearningOnline Network with CAPA 
    * CAPA wrapper code
    * $Id$
    *
    * Copyright Michigan State University Board of Trustees
    *
    * This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    *
    * LON-CAPA 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.
    *
    * LON-CAPA 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 LON-CAPA; if not, write to the Free Software
    * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    *
    * /home/httpd/html/adm/gpl.txt
    *
    * http://www.lon-capa.org/
    */
   
 #include <capaCommon.h>  #include <capaCommon.h>
   #include <ranlib.h>
   
   PointsList_t * parse_pts_list (char *pts_list) {
     PointsList_t *new=NULL, *end=NULL, *beforeend=NULL, *rlist=NULL;
     char *idx_pts=pts_list;
     int done=0;
     /*fprintf(stderr,"ids %s\n",id_list);
       fprintf(stderr,"pts %s\n",pts_list);*/
     while (!done && pts_list) {
       int idx;
       /*fprintf(stderr,"pts; %s\n",idx_pts);*/
       new=gen_ptslist_str(idx_pts);
       if (!new) break;
       if (!rlist) { rlist=new; }
       if (end) { 
         end->pts_next=new; 
         idx=end->pts_idx;
       } else {
         idx=-1;
       }
       end=new;
       while (end) {
         idx++;
         end->pts_idx=idx;
         /*fprintf(stderr,"end is:%d:%d:%s:%d\n",idx,end->pts_idx,end->pts_str,
    end->pts_next);*/
         beforeend=end;
         end=end->pts_next;
       }
       end=beforeend;
       idx_pts=strchr(idx_pts,';');
       if (idx_pts) { idx_pts++; } else { done=1; }
     }
     
     return rlist;
   }
   
 int caparesponse_capa_check_answer(char *response,char *correct,  int caparesponse_capa_check_answer(char *response,char *correct,
    int type,int tol_type,double tolerance,     int type,int tol_type,double tolerance,
    int sig_lbound,int sig_ubound,      int sig_lbound,int sig_ubound, 
    char *ans_fmt, char *unit_str,     char *ans_fmt, char *unit_str,
    int calc)     int calc, char *id_list, char *pts_list, 
      char *rndseed, char** reterror)
      
 {  {
   int result;    long result,seed1,seed2;
   Problem_t p;    Problem_t p;
   char *error=NULL,filename[FILE_NAME_LENGTH];    char *error=NULL,filename[FILE_NAME_LENGTH];
   FILE *fp;    FILE *fp;
   
   /*need to initialize unit parser*/    /* need to initialize unit parser*/
   sprintf(filename,"/home/httpd/html/res/adm/include/capa.units");    *reterror=NULL;
     sprintf(filename,"/home/httpd/html/res/adm/includes/capa.units");
   if ((fp=fopen(filename,"r"))==NULL) {    if ((fp=fopen(filename,"r"))==NULL) {
     /* printf("Error: can't open %s\n",filename);*/      /* printf("Error: can't open %s\n",filename);*/
       return (-1);         return (-1); 
   }    }
   u_getunit(fp);    u_getunit(fp);
   fclose(fp);    fclose(fp);
     /* need to setup random generator (FIXME) should only do this if 
        it hasn't been yet*/
     phrtsd(rndseed,&seed1,&seed2);
     setall(seed1,seed2);
   
     /* assign_id_list and assign_pts_list exist in capaGrammerDef.y */
     p.id_list=NULL;
     p.pts_list=NULL;
   
     if (type == ANSWER_IS_FORMULA) {
       p.id_list=id_list;
       p.pts_list=parse_pts_list(pts_list);
   //  if ( p.id_list == NULL || p.pts_list == NULL) {
   //    return BAD_FORMULA;
   //  }
     }
   p.ans_type   = type;    p.ans_type   = type;
   p.answer     = correct;    p.answer     = correct;
   p.tol_type   = tol_type;    p.tol_type   = tol_type;
   p.tolerance  = tolerance;    p.tolerance  = tolerance;
   p.sig_lbound = sig_lbound;    p.sig_lbound = sig_lbound;
   p.sig_ubound = sig_ubound;    p.sig_ubound = sig_ubound;
   strncpy(p.ans_fmt,ans_fmt,ANSWER_STRING_LENG-1);    
   strncpy(p.unit_str,unit_str,ANSWER_STRING_LENG-1);    if (ans_fmt != NULL ) {
   p.ans_unit   = u_parse_unit(unit_str);      strncpy(p.ans_fmt,ans_fmt,ANSWER_STRING_LENG-1);
     }
     if (unit_str != NULL && unit_str[0]!='\0') {
       strncpy(p.unit_str,unit_str,ANSWER_STRING_LENG-1);
       //p.ans_unit = u_parse_unit(unit_str);
       p.ans_unit   = parse_unit_expr(unit_str);
       p.ans_unit   = process_utree(p.ans_unit);
       //print_unit_t(p.ans_unit);
     } else {
       p.unit_str[0]='\0';
       p.ans_unit=NULL;
     }
   p.calc       = calc;    p.calc       = calc;
   
   /* assign_id_list and assign_pts_list exist in capaGrammerDef.y */  
   p.id_list=NULL;  
   p.pts_list=NULL;  
   
   
   result=capa_check_answer(&p,response,&error);    result=capa_check_answer(&p,response,&error);
     *reterror=error;
     // Caller is expected to free reterror
     //  if (error!=NULL) {free(error);}
   
   if (error!=NULL) {free(error);}    return result;
   }
   
   int caparesponse_get_real_response (char* unit_str, char* answer,
       double* scaled) {
     //double caparesponse_get_real_response (char* unit_str, char* answer) {
     int     input_len,all_alphabet,idx,outcome=-1,result;
     double  n_part,scale=1.0,given,target;
     char    input[ANSWER_STRING_LENG],filename[FILE_NAME_LENGTH],
       tmp_unit_str[ANSWER_STRING_LENG];
     Unit_t *ans_unit;
     long    seed1,seed2;
     FILE   *fp;
     sprintf(filename,"/home/httpd/html/res/adm/includes/capa.units");
     if ((fp=fopen(filename,"r"))==NULL) {
       /* printf("Error: can't open %s\n",filename);*/
       return (-1); 
     }
     u_getunit(fp);
     fclose(fp);
   
     if (unit_str != NULL && unit_str[0]!='\0') {
       ans_unit   = parse_unit_expr(unit_str);
       ans_unit   = process_utree(ans_unit);
     } else {
       ans_unit=NULL;
     }
     input_len = strlen(answer);
     all_alphabet = 1;
     for(idx=0;idx<input_len;idx++) {
       if( isdigit(answer[idx]) ) {
         all_alphabet = 0;
       }
     }
     if( !all_alphabet ) {
       tmp_unit_str[0] = 0;
       outcome = split_num_unit(answer,&n_part,input,tmp_unit_str);
     }
     if( outcome > 0 ) {
       if( outcome > 1 ) { /* with both num and unit parts or only unit part */
         if( ans_unit != NULL ) {
    result = check_correct_unit(tmp_unit_str,ans_unit,&scale);
         } else {
    /* what to do when no unit is specified but student entered a unit? */
    result = UNIT_NOTNEEDED;
         }
       } else {
         if( ans_unit != NULL ) {
    result = NO_UNIT;
         }
       }
       if( (result != NO_UNIT) && (!check_for_unit_fail(result)) && ( result != UNIT_NOTNEEDED) ) {
         given = n_part * scale;
         *scaled=given;
         /* convert the given answer into proper scale for units */
       } /* end if unit check */
     } else { /* user entered a
   lphabet, but no number */
       result = WANTED_NUMERIC;
     } 
   return result;    return result;
 }  }
   
   /* Testing harnass
   int main(void) {
     int result=0;
     char *reterror=NULL;
     result= caparesponse_capa_check_answer("10^3","1000",
    ANSWER_IS_FORMULA,
    TOL_ABSOLUTE,1E-3,
    3,5,NULL,NULL,
    CALC_UNFORMATED,
    "","4",
    "rndseed",
    &reterror);
     fprintf(stderr,"result %d\nreterror: %s\n",result,reterror);
   }
   */
Removed from v.1.2  
changed lines
  Added in v.1.20

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