Annotation of loncom/homework/caparesponse/caparesponse.c, revision 1.19
1.7 albertel 1: /* The LearningOnline Network with CAPA
2: * CAPA wrapper code
1.19 ! albertel 3: * $Id: caparesponse.c,v 1.18 2005/11/07 23:37:39 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);*/
1.18 albertel 37: while (!done && pts_list) {
1.6 albertel 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);
1.19 ! albertel 100: // if ( p.id_list == NULL || p.pts_list == NULL) {
! 101: // return BAD_FORMULA;
! 102: // }
1.6 albertel 103: }
1.2 albertel 104: p.ans_type = type;
105: p.answer = correct;
106: p.tol_type = tol_type;
107: p.tolerance = tolerance;
108: p.sig_lbound = sig_lbound;
109: p.sig_ubound = sig_ubound;
1.8 bowersj2 110:
111: if (ans_fmt != NULL ) {
112: strncpy(p.ans_fmt,ans_fmt,ANSWER_STRING_LENG-1);
113: }
114: if (unit_str != NULL && unit_str[0]!='\0') {
1.5 albertel 115: strncpy(p.unit_str,unit_str,ANSWER_STRING_LENG-1);
1.17 albertel 116: //p.ans_unit = u_parse_unit(unit_str);
117: p.ans_unit = parse_unit_expr(unit_str);
118: p.ans_unit = process_utree(p.ans_unit);
119: //print_unit_t(p.ans_unit);
1.5 albertel 120: } else {
121: p.unit_str[0]='\0';
1.9 bowersj2 122: p.ans_unit=NULL;
1.5 albertel 123: }
1.2 albertel 124: p.calc = calc;
1.1 albertel 125:
126: result=capa_check_answer(&p,response,&error);
1.12 albertel 127: *reterror=error;
128: // Caller is expected to free reterror
129: // if (error!=NULL) {free(error);}
1.1 albertel 130:
131: return result;
132: }
1.14 albertel 133:
134: int caparesponse_get_real_response (char* unit_str, char* answer,
135: double* scaled) {
136: //double caparesponse_get_real_response (char* unit_str, char* answer) {
137: int input_len,all_alphabet,idx,outcome,result;
138: double n_part,scale=1.0,given,target;
1.15 albertel 139: char input[ANSWER_STRING_LENG],filename[FILE_NAME_LENGTH],
140: tmp_unit_str[ANSWER_STRING_LENG];
1.14 albertel 141: Unit_t *ans_unit;
142: long seed1,seed2;
143: FILE *fp;
144: sprintf(filename,"/home/httpd/html/res/adm/includes/capa.units");
145: if ((fp=fopen(filename,"r"))==NULL) {
146: /* printf("Error: can't open %s\n",filename);*/
147: return (-1);
148: }
149: u_getunit(fp);
150: fclose(fp);
151:
152: if (unit_str != NULL && unit_str[0]!='\0') {
1.17 albertel 153: ans_unit = parse_unit_expr(unit_str);
154: ans_unit = process_utree(ans_unit);
1.14 albertel 155: } else {
156: ans_unit=NULL;
157: }
158: input_len = strlen(answer);
159: all_alphabet = 1;
160: for(idx=0;idx<input_len;idx++) {
161: if( isdigit(answer[idx]) ) {
162: all_alphabet = 0;
163: }
164: }
165: if( !all_alphabet ) {
1.19 ! albertel 166: tmp_unit_str[0] = 0;
1.15 albertel 167: outcome = split_num_unit(answer,&n_part,input,tmp_unit_str);
1.14 albertel 168: if( outcome > 1 ) { /* with both num and unit parts or only unit part */
169: if( ans_unit != NULL ) {
1.15 albertel 170: result = check_correct_unit(tmp_unit_str,ans_unit,&scale);
1.14 albertel 171: } else {
172: /* what to do when no unit is specified but student entered a unit? */
173: result = UNIT_NOTNEEDED;
174: }
175: } else {
176: if( ans_unit != NULL ) {
177: result = NO_UNIT;
178: }
179: }
180: if( (result != NO_UNIT) && (!check_for_unit_fail(result)) && ( result != UNIT_NOTNEEDED) ) {
181: given = n_part * scale;
182: *scaled=given;
183: /* convert the given answer into proper scale for units */
184: } /* end if unit check */
185: } else { /* user entered a
186: lphabet, but no number */
187: result = WANTED_NUMERIC;
188: }
189: return result;
190: }
1.19 ! albertel 191:
! 192: /* Testing harnass
! 193: int main(void) {
! 194: int result=0;
! 195: char *reterror=NULL;
! 196: result= caparesponse_capa_check_answer("10^3","1000",
! 197: ANSWER_IS_FORMULA,
! 198: TOL_ABSOLUTE,1E-3,
! 199: 3,5,NULL,NULL,
! 200: CALC_UNFORMATED,
! 201: "","4",
! 202: "rndseed",
! 203: &reterror);
! 204: fprintf(stderr,"result %d\nreterror: %s\n",result,reterror);
! 205: }
! 206: */
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