Annotation of loncom/homework/caparesponse/caparesponse.c, revision 1.14
1.7 albertel 1: /* The LearningOnline Network with CAPA
2: * CAPA wrapper code
1.14 ! albertel 3: * $Id: caparesponse.c,v 1.13 2004/03/12 23:46:06 albertel Exp $
1.7 albertel 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;
1.11 albertel 35: /*fprintf(stderr,"ids %s\n",id_list);
36: fprintf(stderr,"pts %s\n",pts_list);*/
1.6 albertel 37: while (!done) {
38: int idx;
1.11 albertel 39: /*fprintf(stderr,"pts; %s\n",idx_pts);*/
1.6 albertel 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;
1.11 albertel 53: /*fprintf(stderr,"end is:%d:%d:%s:%d\n",idx,end->pts_idx,end->pts_str,
54: end->pts_next);*/
1.6 albertel 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,
1.12 albertel 71: char *rndseed, char** reterror)
1.6 albertel 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;
1.11 albertel 78:
1.9 bowersj2 79: /* need to initialize unit parser*/
1.13 albertel 80: *reterror=NULL;
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;
1.11 albertel 96:
1.6 albertel 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;
1.8 bowersj2 107:
108: if (ans_fmt != NULL ) {
109: strncpy(p.ans_fmt,ans_fmt,ANSWER_STRING_LENG-1);
110: }
111: if (unit_str != NULL && unit_str[0]!='\0') {
1.5 albertel 112: strncpy(p.unit_str,unit_str,ANSWER_STRING_LENG-1);
113: p.ans_unit = u_parse_unit(unit_str);
114: } else {
115: p.unit_str[0]='\0';
1.9 bowersj2 116: p.ans_unit=NULL;
1.5 albertel 117: }
1.2 albertel 118: p.calc = calc;
1.1 albertel 119:
120: result=capa_check_answer(&p,response,&error);
1.12 albertel 121: *reterror=error;
122: // Caller is expected to free reterror
123: // if (error!=NULL) {free(error);}
1.1 albertel 124:
125: return result;
126: }
1.14 ! albertel 127:
! 128: int caparesponse_get_real_response (char* unit_str, char* answer,
! 129: double* scaled) {
! 130: //double caparesponse_get_real_response (char* unit_str, char* answer) {
! 131: int input_len,all_alphabet,idx,outcome,result;
! 132: double n_part,scale=1.0,given,target;
! 133: char input[ANSWER_STRING_LENG],filename[FILE_NAME_LENGTH];
! 134: Unit_t *ans_unit;
! 135: long seed1,seed2;
! 136: FILE *fp;
! 137: sprintf(filename,"/home/httpd/html/res/adm/includes/capa.units");
! 138: if ((fp=fopen(filename,"r"))==NULL) {
! 139: /* printf("Error: can't open %s\n",filename);*/
! 140: return (-1);
! 141: }
! 142: u_getunit(fp);
! 143: fclose(fp);
! 144:
! 145: if (unit_str != NULL && unit_str[0]!='\0') {
! 146: ans_unit = u_parse_unit(unit_str);
! 147: } else {
! 148: ans_unit=NULL;
! 149: }
! 150: input_len = strlen(answer);
! 151: all_alphabet = 1;
! 152: for(idx=0;idx<input_len;idx++) {
! 153: if( isdigit(answer[idx]) ) {
! 154: all_alphabet = 0;
! 155: }
! 156: }
! 157: if( !all_alphabet ) {
! 158: outcome = split_num_unit(answer,&n_part,input,unit_str);
! 159: if( outcome > 1 ) { /* with both num and unit parts or only unit part */
! 160: if( ans_unit != NULL ) {
! 161: result = check_correct_unit(unit_str,ans_unit,&scale);
! 162: } else {
! 163: /* what to do when no unit is specified but student entered a unit? */
! 164: result = UNIT_NOTNEEDED;
! 165: }
! 166: } else {
! 167: if( ans_unit != NULL ) {
! 168: result = NO_UNIT;
! 169: }
! 170: }
! 171: if( (result != NO_UNIT) && (!check_for_unit_fail(result)) && ( result != UNIT_NOTNEEDED) ) {
! 172: given = n_part * scale;
! 173: *scaled=given;
! 174: /* convert the given answer into proper scale for units */
! 175: } /* end if unit check */
! 176: } else { /* user entered a
! 177: lphabet, but no number */
! 178: result = WANTED_NUMERIC;
! 179: }
! 180: return result;
! 181: }
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