Subversion Repositories wimsdev

/*    Copyright (C) 1998-2003 XIAO, Gang of Universite de Nice - Sophia Antipolis

 *

 *  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., 675 Mass Ave, Cambridge, MA 02139, USA.

 */

#include "../Lib/libwims.h"

#include "oef2wims.h"

int prepcnt;

int ex_statement=0, ex_hint=0, ex_help=0, ex_solution=0, ex_latex=0;

const size_t MAX_KEY_LEN=128;

char vbuf_statement[MAX_LINELEN+1];

char vbuf_hint[MAX_LINELEN+1];

char vbuf_help[MAX_LINELEN+1];

char vbuf_solution[MAX_LINELEN+1];

char vbuf_latex[MAX_LINELEN+1];

/* empty processor, template. */

void empty(char *p[MAX_PARM]) {}

void p_header(char *p[MAX_PARM])

{

    p[0]=find_word_start(p[0]);

    if(strlen(p[0])>MAX_KEY_LEN) p[0][MAX_KEY_LEN]=0;

    fprintf(outf,"%s=%s\n", p[1], p[0]);

}

void p_computeanswer(char *p[MAX_PARM])

{

    p[0]=find_word_start(p[0]);

    *find_word_end(p[0])=0;

    if(strcasecmp(p[0],"yes"))

      fprintf(outf,"computeanswer=no\n");

    else fprintf(outf,"computeanswer=%s\n",p[0]);

}

void p_precision(char *p[MAX_PARM])

{

    int pr;

    pr=atoi(p[0]);

    if(pr<0 || pr>100000000) return;

    fprintf(outf,"precision=%d\n",pr);

}

void p_gen2(char *name_gen, char *p[MAX_PARM])

{

    char vbuf_gen[MAX_LINELEN+1];

    if(p==NULL) return;

    snprintf(vbuf_gen,sizeof(vbuf_gen),"%s",p[0]); subst(vbuf_gen);

    singlespace(vbuf_gen);

    fprintf(outf,"%s=%s\n\n", name_gen, vbuf_gen);

}

void p_css(char *p[MAX_PARM]) {p_gen2("oefcss", p);}

void p_credits(char *p[MAX_PARM]){p_gen2("credits", p);}

void p_wims(char *p[MAX_PARM])

{

    char vbuf[MAX_LINELEN+1];

    snprintf(vbuf,sizeof(vbuf),"%s",p[0]); subst(vbuf);

/* the second condition could be removed?

 * To be very careful! */

    if(strchr(vbuf,'=')==NULL || strchr(vbuf,'!')!=NULL) return;

    fprintf(outf,"%s\n",vbuf);

}

void p_mdef(char *p[MAX_PARM])

{

    char vbuf[MAX_LINELEN+1];

    if(wordchr(mdef,p[0])==NULL) return;

    snprintf(vbuf,sizeof(vbuf),"%s",p[1]); subst(vbuf);

/* the second condition could be removed?

 * To be very careful! */

    if(strchr(vbuf,'!')!=NULL) return;

    fprintf(outf,"m_%s=%s\n",p[0],vbuf);

}

void p_range(char *p[MAX_PARM])

{

    double left, right;

    char *pp;

    pp=strstr(p[0],"..");

    if(pp==NULL) return;

    *pp=0;pp+=strlen("..");

    left=atof(p[0]); right=atof(pp);

    if(left>=right-1E-50 || left<-1E50 || right>1E50) return;

    fprintf(outf,"leftrange=%f\nrightrange=%f\n",left,right);

}

void p_language(char *p[MAX_PARM])

{

    p[0]=find_word_start(p[0]);

    *find_word_end(p[0])=0;

    if(strlen(p[0])==2) fprintf(outf,"language=%s\n",p[0]);

}

void p_statement(char *p[MAX_PARM])

{

    if(ex_statement<0) return;

    if(ex_statement>0 || p==NULL) {

      out_exec(vbuf_statement,"question");

      ex_statement=-1; return;

    }

    if(p==NULL) return;

    snprintf(vbuf_statement,sizeof(vbuf_statement),"%s",p[0]);

    subst(vbuf_statement);

    if(strcmp(format,"html")!=0) {

      fprintf(outf,"question=!nosubst %s\n",vbuf_statement);

      ex_statement=-1;

    }

    else {

      fprintf(outf,"question=%s\n",executed_str);

      ex_statement=1;

    }

}

void p_gen(int *ex_gen, char vbuf_gen[], char *name_gen, char *p[MAX_PARM])

{

    if(*ex_gen<0) return;

    if(*ex_gen>0 || p==NULL) {

      out_exec(vbuf_gen, name_gen);

      *ex_gen=-1; return;

    }

    snprintf(vbuf_gen,MAX_LINELEN,"%s",p[0]); subst(vbuf_gen);

    if(strchr(vbuf_gen,'\\')!=NULL) {

      fprintf(outf,"%s=%s\n", name_gen, executed_str);

      *ex_gen=1;

    }

    else {

      singlespace(vbuf_gen);

      fprintf(outf,"%s=!nosubst %s\n\n", name_gen, vbuf_gen);

    }

}

void p_hint(char *p[MAX_PARM]) {p_gen(&ex_hint, vbuf_hint, "hint", p);}

void p_help(char *p[MAX_PARM]) {p_gen(&ex_help, vbuf_help, "help", p);}

void p_solution(char *p[MAX_PARM]) {p_gen(&ex_solution, vbuf_solution, "solution", p);}

void p_latex(char *p[MAX_PARM])

{

    if(ex_latex<0) return;

    if(ex_latex>0 || p==NULL) {

      out_exec(vbuf_latex,"latex");

      ex_latex=-1; return;

    }

    snprintf(vbuf_latex,sizeof(vbuf_latex),"%s",p[0]);

    subst(vbuf_latex);

      singlespace(vbuf_latex);

      fprintf(outf,"latex=!nosubst %s\n\n", vbuf_latex);

}

enum {typ_default, typ_num, typ_func, typ_units, typ_text,

      typ_formal,typ_matrix,typ_vector,typ_set,typ_equation,

      typ_case, typ_nocase, typ_atext, typ_wlist, typ_comp,

      typ_algexp, typ_litexp, typ_menu, typ_coord, typ_fill,

      typ_raw, typ_symtext,

      typ_java, typ_src, typ_chem

};

struct {

    char *name;

    int  type;

    char *def;

} anstype[]={

      {"algexp", typ_algexp, "algexp"},

      {"aset",  typ_set, "aset"},

      {"atext",  typ_atext, "atext"},

      {"case",  typ_case, "case"},

      {"checkbox", typ_menu, "checkbox"},

      {"chemeq",        typ_chem,       "chemeq"},

      {"chset",  typ_atext, "chset"},

      {"click",  typ_menu, "click"},

      {"clickfill", typ_fill, "clickfill"},

      {"code",  typ_src, "code"},

      {"compose", typ_comp, "compose"},

      {"coord",  typ_coord, "coord"},

      {"coordinates", typ_coord, "coord"},

      {"corresp", typ_comp, "correspond"},

      {"correspond", typ_comp, "correspond"},

      {"default", typ_default, "default"},

      {"dragfill", typ_fill, "dragfill"},

      {"equation", typ_equation, "equation"},

      {"expalg", typ_algexp, "algexp"},

      {"formal", typ_formal, "formal"},

      {"fset",  typ_set, "fset"},

      {"function", typ_func, "function"},

      {"imgcomp", typ_comp, "imgcomp"},

      {"javacurve", typ_java, "javacurve"},

      {"link",  typ_menu, "click"},

      {"litexp", typ_litexp, "litexp"},

      {"mark",  typ_menu, "mark"},

      {"matrix", typ_matrix, "matrix"},

      {"menu",  typ_menu, "menu"},

      {"nocase", typ_nocase, "nocase"},

      {"number", typ_num, "numeric"},

      {"numeric", typ_num, "numeric"},

      {"numexp", typ_algexp, "numexp"},

      {"radio",  typ_menu, "radio"},

      {"range",  typ_func, "range"},

      {"ranges", typ_func, "range"},

      {"raw",  typ_raw, "raw"},

      {"reorder", typ_comp, "reorder"},

      {"select", typ_menu, "menu"},

      {"set",  typ_set, "set"},

      {"sigunits", typ_units, "sigunits"},

      {"symtext", typ_symtext, "symtext"},

      {"text",  typ_text, "case"},

      {"textcomp", typ_comp, "textcomp"},

      {"unit",  typ_units, "units"},

      {"units",  typ_units, "units"},

      {"vector", typ_vector, "vector"},

      {"wlist",  typ_wlist, "wlist"},

      {"wordcomp", typ_comp, "textcomp"}

};

#define anstype_no (sizeof(anstype)/sizeof(anstype[0]))

void p_answer(char *p[MAX_PARM])

{

    char *pp, vbuf[MAX_LINELEN+1],nbuf[MAX_LINELEN+1];

    int i,j,k,typ;

/* look for type definition */

    typ=typ_default;

    for(i=0;i<5;i++) {

      if(p[i]==NULL || p[i][0]==0) continue;

      p[i]=find_word_start(p[i]);

      if(strncasecmp(p[i],"type",strlen("type"))==0) {

          char *tt;

          tt=find_word_start(p[i]+strlen("type"));

          if(*tt=='=') {

            for(j=i;j<6;j++) p[j]=p[j+1]; i--;

            tt=find_word_start(tt+1); *find_word_end(tt)=0;

            k=search_list(anstype,anstype_no,sizeof(anstype[0]),tt);

/* unknown type is now substituted */

            if(k>=0) {

                fprintf(outf,"replytype%d=%s\n",

                      answercnt,anstype[k].def);

                typ=anstype[k].type;

            }

            else {

                snprintf(nbuf,sizeof(nbuf),"%s",tt); subst(nbuf);

                fprintf(outf,"replytype%d=%s\n\n",answercnt,nbuf);

            }

          }

          continue;

      }

      if(strncasecmp(p[i],"option",strlen("option"))==0) {

          char *tt, *tv;

          tt=p[i]+strlen("option");

          if(*tt=='s' || *tt=='S') tt++;

          tt=find_word_start(tt);

          if(*tt=='=') {

            for(j=i;j<6;j++) p[j]=p[j+1]; i--;

            snprintf(nbuf,sizeof(nbuf),"%s",tt+1); subst(nbuf);

            for(tv=nbuf; *tv; tv++) if(*tv==',' || *tv==';') *tv=' ';

            strip_trailing_spaces(nbuf);

            fprintf(outf,"replyoption%d=%s \n",answercnt,

                  find_word_start(nbuf));

          }

          continue;

      }

      if(strncasecmp(p[i],"weight",strlen("weight"))==0) {

          char *tt;

          tt=p[i]+strlen("weight");

          tt=find_word_start(tt);

          if(*tt=='=') {

            for(j=i;j<6;j++) p[j]=p[j+1]; i--;

            snprintf(nbuf,sizeof(nbuf),"%s",tt+1); subst(nbuf);

            strip_trailing_spaces(nbuf);

            fprintf(outf,"replyweight%d=%s \n",answercnt,

                  find_word_start(nbuf));

          }

          continue;

      }

    }

    p[0]=find_word_start(p[0]);

    strncpy(nbuf,p[0],MAX_LINELEN); nbuf[MAX_LINELEN]=0; subst(nbuf);

    nbuf[MAX_PROMPTLEN]=0;

    strip_trailing_spaces(nbuf); pp=nbuf+strlen(nbuf)-1;

    if(*pp=='=') *pp=0;

    p[1]=find_word_start(p[1]);

    if(*p[1]=='\\' && (isalnum(*(p[1]+1)) || *(p[1]+1)=='_')) {

/* check for analyzed answers */

      int i,n; char *pt;

      strncpy(vbuf,p[1]+1,MAX_LINELEN); vbuf[MAX_LINELEN]=0;

      pt=strchr(vbuf,';'); if(pt!=NULL) *pt=0;

      strip_trailing_spaces(vbuf); n=strlen(vbuf);

      if(n>=MAX_NAMELEN) goto normal;

      for(i=0;i<n && (isalnum(vbuf[i]) || vbuf[i]=='_');i++);

      if(i<n) goto normal;

      for(i=varcnt-1;i>=1 && strcmp(vbuf,param[i].name)!=0;i--);

      if(i<1) { /* unused name; the answer should be analyzed */

          char *pm;

          pm=xmalloc(MAX_NAMELEN+2);

          ovlstrcpy(pm,vbuf); param[varcnt].name=pm;

          if(pt) {

            *pt=';';

            ovlstrcpy(vbuf,pt); subst(vbuf); pt=vbuf;

          }

          else pt="";

          param[varcnt].type=pt_real;

          param[varcnt].save=1;

          fprintf(outf,"replyname%d=%s\nreplygood%d=?analyze %d%s\n",

                answercnt,nbuf,answercnt,varcnt,pt);

          condans++; answercnt++; varcnt++; return;

      }

    }

    normal:

    strncpy(vbuf,p[1],MAX_LINELEN); vbuf[MAX_LINELEN]=0;

    subst(vbuf);

    switch(typ) {

      default:

      case typ_default: {

          fprintf(outf,"replyname%d=%s\nreplygood%d=%s\n",

                answercnt,nbuf,answercnt,vbuf);

          break;

      }

      case typ_num: {

          fprintf(outf,"replyname%d=%s\nreplygood%d=$[%s]\n",

                answercnt,nbuf,answercnt,vbuf);

          break;

      }

      case typ_equation:

      case typ_func: {

          fprintf(outf,"replyname%d=%s\nreplygood%d=!rawmath %s\n",

                answercnt,nbuf,answercnt,vbuf);

          break;

      }

      case typ_units: {

          fprintf(outf,"replyname%d=%s\nreplygood%d=%s\n",

                answercnt,nbuf,answercnt,vbuf);

          break;

      }

    }

    answercnt++;

}

void p_choice(char *p[MAX_PARM])

{

    int i,j;

    char buf1[MAX_LINELEN+1],buf2[MAX_LINELEN+1],nbuf[MAX_LINELEN+1];

    for(i=0;i<5;i++) {

      if(p[i]==NULL || p[i][0]==0) continue;

      p[i]=find_word_start(p[i]);

      if(strncasecmp(p[i],"option",strlen("option"))==0) {

          char *tt, *tv;

          tt=p[i]+strlen("option");

          if(*tt=='s' || *tt=='S') tt++;

          tt=find_word_start(tt);

          if(*tt=='=') {

            for(j=i;j<6;j++) p[j]=p[j+1]; i--;

            snprintf(nbuf,sizeof(nbuf),"%s",tt+1); subst(nbuf);

            for(tv=nbuf; *tv; tv++) if(*tv==',' || *tv==';') *tv=' ';

            strip_trailing_spaces(nbuf);

            fprintf(outf,"choiceoption%d=%s \n",choicecnt,

                  find_word_start(nbuf));

          }

          continue;

      }

      if(strncasecmp(p[i],"weight",strlen("weight"))==0) {

          char *tt;

          tt=p[i]+strlen("weight");

          tt=find_word_start(tt);

          if(*tt=='=') {

            for(j=i;j<6;j++) p[j]=p[j+1]; i--;

            snprintf(nbuf,sizeof(nbuf),"%s",tt+1); subst(nbuf);

            strip_trailing_spaces(nbuf);

            fprintf(outf,"choiceweight%d=%s \n",choicecnt,

                  find_word_start(nbuf));

          }

          continue;

      }

    }

    p[0]=find_word_start(p[0]);

    snprintf(buf1,sizeof(buf1),"%s",p[1]); subst(buf1);

    snprintf(buf2,sizeof(buf2),"%s",p[2]); subst(buf2);

    snprintf(nbuf,sizeof(nbuf),"%s",p[0]); subst(nbuf);

    nbuf[MAX_PROMPTLEN]=0;

    fprintf(outf,"choicename%d=%s\nchoicegood%d=%s\nchoicebad%d=%s\n",

          choicecnt,nbuf,choicecnt,buf1,choicecnt,buf2);

    choicecnt++;

}

void putval(char *p, int n, int ptype)

{

    switch(ptype) {

      case pt_int: {

          fprintf(outf,"val%d=$[rint(%s)]\n",n,p);

          break;

      }

      case pt_real: {

          fprintf(outf,"val%d=$[%s]\n",n,p);

          break;

      }

      case pt_func: {

          fprintf(outf,"val%d=!rawmath %s\n",n,p);

          break;

      }

      case pt_complex: {

          fprintf(outf,"t_=!rawmath %s\nt_=!exec pari print($t_)\n\

val%d=!mathsubst I=i in $t_\n",p,n);

          break;

      }

      case pt_matrix: {

          fprintf(outf,"tmp=!trim %s\n\

val%d=!translate internal $     \\\n$ to ;; in $tmp\n",p,n);

          break;

      }

      case pt_rat: {

          fprintf(outf,"t_=!rawmath %s\n\

val%d=!exec pari print($t_)\n",p,n);

          break;

      }

      default: {

          fprintf(outf,"val%d=%s\n",n,p);

          break;

      }

    }

}

void parm(char *p[MAX_PARM], int ptype)

{

    char *pp, *p2;

    char vbuf[MAX_LINELEN+1];

    int i;

    p[0]=find_word_start(p[0]);

    if(*p[0]=='\\') p[0]++;

/* bad name */

    if(!isalpha(*p[0])) return;

    strip_trailing_spaces(p[0]);

    for(pp=p[0];*pp;pp++) if(!isalnum(*pp) && *pp!='_') {

/* bad name and security risk */

      if(!isspace(*pp)) return;

      ovlstrcpy(pp,pp+1); pp--;

    }

    for(i=1;i<varcnt && strcmp(p[0],param[i].name)!=0;i++);

    p[1]=find_word_start(p[1]);

    snprintf(vbuf,sizeof(vbuf),"%s",p[1]); subst(vbuf);

    if(deftag) repsubst(vbuf);

    if((pp=strparchr(vbuf,'?'))!=NULL && pp[1]!='?') {

      char buf[MAX_LINELEN+1];

      if(check_compare(vbuf)==0) goto noif;

      p2=strparchr(pp,':'); *pp++=0; if(p2!=NULL) *p2++=0;

      snprintf(buf,sizeof(buf),"%s",vbuf);

      prepcnt=0; parmprep(buf,ptype);

      fprintf(outf,"\n!ifval %s\n",buf);

      snprintf(buf,sizeof(buf),"%s",pp);

      parmprep(buf,ptype); putval(buf,i,ptype);

      if(p2!=NULL) {

          fprintf(outf,"!else\n");

          snprintf(buf,sizeof(buf),"%s",p2);

          parmprep(buf,ptype); putval(buf,i,ptype);

      }

      fprintf(outf,"!endif\n");

    }

    else {

noif:

      prepcnt=0; parmprep(vbuf, ptype);

      putval(vbuf,i,ptype);

    }

    if(i>=varcnt && i<MAX_PARAM) {

      param[varcnt].name=p[0];

      param[varcnt].type=ptype;

      param[varcnt].save=0;

      varcnt++;

    }

}

void p_int(char *p[MAX_PARM]) {parm(p,pt_int);}

void p_rational(char *p[MAX_PARM]) {parm(p,pt_rat);}

void p_real(char *p[MAX_PARM]) {parm(p,pt_real);}

void p_complex(char *p[MAX_PARM]) {parm(p,pt_complex);}

void p_func(char *p[MAX_PARM]) {parm(p,pt_func);}

void p_text(char *p[MAX_PARM]) {parm(p,pt_text);}

void p_matrix(char *p[MAX_PARM]) {parm(p,pt_matrix);}

void p_parm(char *p[MAX_PARM])

{

    parm(p,pt_real);

}

void _p_if(char *p[MAX_PARM], int type)

{

    char vbuf[MAX_LINELEN+1];

    snprintf(vbuf,sizeof(vbuf),"%s",p[0]); subst(vbuf);

    if(deftag) repsubst(vbuf);

    prepcnt=0; parmprep(vbuf, pt_real);

    switch(type) {

          case 0: fprintf(outf,"!if %s \n",vbuf); break;

          case 1: fprintf(outf,"!ifval %s \n",vbuf);

    }

}

void p_if(char *p[MAX_PARM]) { return _p_if(p, 0);}

void p_ifval(char *p[MAX_PARM]) { return _p_if(p, 1);}

void p_else(char *p[MAX_PARM])

{

    fprintf(outf,"!else\n");

}

void p_endif(char *p[MAX_PARM])

{

    fprintf(outf,"!endif\n");

}

void p_while(char *p[MAX_PARM])

{

    char vbuf[MAX_LINELEN+1];

    snprintf(vbuf,sizeof(vbuf),"%s",p[0]); subst(vbuf);

    if(deftag) repsubst(vbuf);

    prepcnt=0; parmprep(vbuf, pt_real);

    fprintf(outf,"!while %s \n",vbuf);

}

void p_endwhile(char *p[MAX_PARM])

{

    fprintf(outf,"!endwhile\n");

}

void p_for(char *p[MAX_PARM])

{

    char *p1, *p2, buf[256];

    char vbuf[MAX_LINELEN+1];

    int i;

    p1=find_word_start(p[0]);

    if(!isalpha(*p1)) return;

    for(p2=p1; isalnum(*p2); p2++);

    if(p2-p1>64) return;

    memmove(buf,p1,p2-p1); buf[p2-p1]=0;

    for(i=1;i<varcnt && strcmp(buf,param[i].name)!=0;i++);

    if(i>=varcnt && i<MAX_PARAM) {

      param[varcnt].name=p1;

      param[varcnt].type=pt_real;

      param[varcnt].save=0;

      varcnt++;

    }

    snprintf(vbuf,sizeof(vbuf),"%s",p2); subst(vbuf); *p2=0;

    if(deftag) repsubst(vbuf);

    prepcnt=0; parmprep(vbuf, pt_real);

    fprintf(outf,"!for val%d %s \n", i, vbuf);

}

void p_next(char *p[MAX_PARM])

{

    fprintf(outf,"!next\n");

}

void p_plot(char *p[MAX_PARM])

{

    int i, f, xr, yr;

    char *pp, *p2;

    char buf[MAX_LINELEN+1];

    f=xr=yr=-1;

    for(i=0;i<3;i++) {

      if(*p[i]==0) continue;

      if((pp=strchr(p[i],'='))==NULL) f=i;

      else {

          *pp=0; pp++;

          p2=find_word_start(p[i]);

          if(*p2=='x' || *p2=='X') xr=i;

          else if (*p2=='y' || *p2=='Y') yr=i;

          ovlstrcpy(p[i],pp);

      }

    }

/*    if(xr>=0 && (pp=strstr(p[xr],".."))!=NULL) {

    }

*/    if(f<0) return;

    ovlstrcpy(buf, p[f]);

    prepcnt=0; parmprep(buf,pt_func);

    fprintf(outf,"plot_fn=!rawmath %s\n",buf);

}

void p_condition(char *p[MAX_PARM])

{