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.

 */

 /* This program translates oef format exercises into wims internal data format. */

#define MAX_TITLEN 60

#define MAX_PARM 10

#define MAX_PARAM 1024

#define MAX_DEFINE 1024

#define MAX_FLEN 199999

#define VERSION "3.22"

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

#include "oef2wims.h"

FILE *outf;

int choicecnt=0, answercnt=0, feedbackcnt=0, varcnt=0, conditioncnt=0, condans=0, has_plot=0;

char *primitive_dir="oef";

int has_help=0;

int posttag=0, prevarcnt=-1, post=0, deftag, prevars;

int start_varcnt=0;

int step_defined=0;

int embedcnt=0;

char *badpar=NULL;

char *mdef; /* external definition */

char *format="html";

int ao[256];

int aocnt=0;

struct param param[MAX_PARAM+32];

char *inpbuf, *inpend;

char outfname[1024];

enum {t_tit, t_head, t_head2, t_lang, t_def, t_wims, t_form, t_main, t_plot, t_hint,

      t_ans, t_choi, t_cond, t_cond2, t_sol, t_feedback, t_help, t_step, t_latex};

struct {

  char *name;

  int type, parmcnt;

  void (*processor)(char *p[MAX_PARM]);

} directives[]={

  {"answer", t_ans, 5, p_answer},

  {"author", t_head2, 1, p_header},

  {"choice", t_choi, 5, p_choice},

  {"complex", t_def, 2, p_complex},

  {"computeanswer", t_head, 1, p_computeanswer},

  {"condition", t_cond, 4, p_condition},

  {"conditions", t_cond2, 1, p_conditions},

  {"credits", t_def, 2, p_credits},

  {"css", t_head, 1, p_css},

  {"description", t_head, 1, p_description},

  {"else", t_def, 0, p_else},

  {"email", t_head2, 1, p_header},

  {"endif", t_def, 0, p_endif},

  {"endwhile", t_def, 0, p_endwhile},

  {"feedback", t_feedback, 2, p_feedback},

  {"for", t_def, 1, p_for},

  {"format", t_form, 1, empty},

  {"function", t_def, 2, p_func},

  {"help", t_help, 1, p_help},

  {"hint", t_hint, 1, p_hint},

  {"if", t_def, 1, p_if},

  {"ifval", t_def, 1, p_ifval},

  {"int", t_def, 2, p_int},

  {"integer", t_def, 2, p_int},

  {"keywords", t_head2, 1, p_header},

  {"language", t_head, 1, p_language},

  {"latex", t_latex, 1, p_latex},

  {"matrix", t_def, 2, p_matrix},

  {"mdef", t_def, 2, p_mdef},

  {"next", t_def, 0, p_next},

  {"nextstep", t_step, 1, p_nextstep},

  {"observation", t_head, 1, p_observation},

  {"parameter", t_def, 2, p_parm},

  {"plot", t_plot, 3, p_plot},

  {"precision", t_head, 1, p_precision},

  {"range", t_head, 1, p_range},

  {"rational", t_def, 2, p_rational},

  {"real", t_def, 2, p_real},

  {"reply", t_ans, 5, p_answer},

  {"solution", t_sol, 1, p_solution},

  {"statement", t_main, 1, p_statement},

  {"steps", t_step, 1, p_steps},

  {"text", t_def, 2, p_text},

  {"title", t_tit, 1, empty},

  {"title_ca", t_lang, 1, p_header},

  {"title_cn", t_lang, 1, p_header},

  {"title_en", t_lang, 1, p_header},

  {"title_es", t_lang, 1, p_header},

  {"title_fr", t_lang, 1, p_header},

  {"title_it", t_lang, 1, p_header},

  {"title_nl", t_lang, 1, p_header},

  {"title_si", t_lang, 1, p_header},

  {"variable", t_def, 2, p_parm},

  {"while", t_def, 1, p_while},

  {"wims", t_wims, 1, p_wims}

};

#define dir_no (sizeof(directives)/sizeof(directives[0]))

struct {

  char *parm[MAX_PARM];

  short int type, tag;

} define[MAX_DEFINE];

int define_no, title_no=-1, statement_no=-1;

/* Debug output */

void oef_debug(void)

{

  int i,j,n;

  for(i=0;i<define_no;i++) {

    printf("%s: ",directives[define[i].type].name);

    n=directives[define[i].type].parmcnt;

    for(j=0;j<n;j++) {

      printf("%s",define[i].parm[j]);

      if(j<n-1) printf(", ");

    }

    printf("\n");

  }

}

/* get one input file */

long int getinp(char fname[])

{

  FILE *input;

  long int siz;

  int i;

  input=fopen(fname,"r");

  if(input==NULL) return 0;

  fseek(input,0L,SEEK_END); siz=ftell(input);

  if(siz<=0 || siz>=MAX_FLEN) {

    fclose(input);

    if(siz==0) return 0; else return -1;

  }

  fseek(input,0L,SEEK_SET);

  inpbuf=xmalloc(siz+10);

  siz=fread(inpbuf,1,siz,input); fclose(input);

  if(siz<=0) return -1;

  inpend=inpbuf+siz; *inpend=0;

  for(i=0;i<siz;i++)

    if(inpbuf[i]==13 || (inpbuf[i]>=0 && inpbuf[i]<=6)) inpbuf[i]=' ';

  return siz;

}

/* Processes input file */

void process(void)

{

  char *p, *pe, *pp;

  int i,j;

  for(p=inpbuf,define_no=0;define_no<MAX_DEFINE && p<inpend;p++) {

    if(*p!='\\' && *p!='{' && (*p>6 || *p<0)) continue;

    if(*p>0 && *p<=6) {

      pe="";

      switch(*p) {

        case elsechar: pe="else"; break;

        case endifchar: pe="endif"; break;

        case nextchar: pe="next"; break;

        case whilechar: pe="endwhile"; break;

      }

      define[define_no].tag=posttag;

      define[define_no++].type=search_list(directives,dir_no,sizeof(directives[0]),pe);

      continue;

    }

    if(*p=='{') {

      if((p=find_matching(p+1,'}'))==NULL) oef_error("Unmatched parentheses???");

      continue;

    }

    p++;

    for(pe=p;isalnum(*pe) || *pe=='_'; pe++);

    pp=find_word_start(pe);

    if(*pp!='{') {

      if(pp>p) p=pp-1;

        continue;

    }

/*c=*pe; */*pe=0;

    i=search_list(directives,dir_no,sizeof(directives[0]),p);

    if(i<0) {

      if(wordchr(mdef,p)!=NULL) {

        pe=find_matching(pp+1,'}'); if(pe==NULL) oef_error("Unmatched parentheses?");

        *pe=0;define[define_no].type=

              search_list(directives,dir_no,sizeof(directives[0]),"mdef");

        replace_newline(pp+1);

        define[define_no].tag=posttag;

        define[define_no].parm[0]=p;

        define[define_no].parm[1]=pp+1;

        define_no++; p=pe;

        continue;

      }

      if((p=find_matching(pp+1,'}'))==NULL) oef_error("Unmatched parentheses?");

        continue;

    }

    define[define_no].type=i;

    define[define_no].tag=posttag;

    for(j=0;j<MAX_PARM && j<directives[i].parmcnt;j++,pp=find_word_start(pe+1)) {

      if(j>0 && *pp!='{') break;

      if((pe=find_matching(pp+1,'}'))==NULL) oef_error("Unmatched parentheses?");

      *pe=0; replace_newline(pp+1);

      define[define_no].parm[j]=pp+1;

    }

    for(;j<MAX_PARM;j++) define[define_no].parm[j]="";

    switch(directives[i].type) {

      case t_tit: {

        title_no=define_no; break;

      }

      case t_head2: case t_lang: {

        define[define_no].parm[1]=directives[i].name;

        break;

      }

      case t_ans: {

        if(aocnt<256) ao[aocnt++]=t_ans;

        answercnt++; goto checkeq;

      }

      case t_step: {

        if(step_defined) oef_error("Multiple definition of steps.");

        step_defined=1; break;

      }

      case t_def: {

        char *pt;

        if(directives[i].parmcnt<2) {

          char *pt2, *pt3;

          pt=find_word_start(pe+1); pt3="";

          if(*pt!='{') pt2=pt;

          else {

            *pt=' '; pt2=find_matching(pt,'}');

            if(pt2==NULL) oef_error("Unmatched parentheses?");

            pt3=find_word_start(pt2+1);

          }

          if(strcmp(directives[i].name,"if")==0 || strcmp(directives[i].name,"ifval")==0) {

            if(*pt3=='{') {

              *pt2=elsechar; *pt3=' ';

              pt2=find_matching(pt3,'}');

              if(pt2==NULL) oef_error("Unmatched parentheses?");

            }

            *pt2=endifchar;

          }

          else {

            if(strcmp(directives[i].name,"while")==0) *pt2=whilechar;

            else {

              varcnt++; *pt2=nextchar;

            }

          }

          break;

        }

        varcnt++;

        checkeq:

        if(*(define[define_no].parm[1])==0 &&

           (pt=strchr(define[define_no].parm[0],'='))!=NULL) {

          if(*(pt-1)==':') *(pt-1)=0;

          *pt=0; define[define_no].parm[1]=pt+1;

        }

        break;

      }

      case t_choi: {

        if(aocnt<256) ao[aocnt++]=t_choi;

        choicecnt++; break;

      }

      case t_cond: {

        conditioncnt++; break;

      }

      case t_main: {

        if(posttag) oef_error("Multiple definition of statement.");

        posttag=1; if(prevarcnt<0) prevarcnt=varcnt;

        statement_no=define_no; break;

      }

      case t_plot: {

        has_plot=1; break;

      }

      case t_form: {

        char *s=define[define_no].parm[0];

        s=find_word_start(s);*find_word_end(s)=0;

        if(strcasecmp(s,"html")==0) format="html";

        if(strcasecmp(s,"tex")==0) format="tex";

        break;

      }

      case t_feedback: {

        feedbackcnt++; break;

      }

    }

    define_no++; p=pe;

  }

}

/* Output one category */

void _out(int typ)

{

  int i, t;

  for(i=0;i<define_no;i++) {

    t=define[i].type;

    if(directives[t].type!=typ) continue;

    if(typ==t_def && define[i].tag!=deftag) continue;

    directives[t].processor(define[i].parm);

  }

}

/* Output the result */

void output(void)

{

  int i,k;

/* no statement, nothing to do */

  if(statement_no<0) oef_error("No statement defined.");

  outf=fopen(outfname,"w"); if(outf==NULL) oef_error("Unable to open output file.");

  if(title_no>=0 && *(define[title_no].parm[0])!=0) {

    char *p=define[title_no].parm[0];

    if(strlen(p)>MAX_TITLEN) *(p+MAX_TITLEN)=0;

    fprintf(outf,"!set title=%s\n",p);

  }

  else {

    fprintf(outf,"!set title=No title\n");

  }

  fprintf(outf,"!if $wims_read_parm!=$empty\n\

 !goto $wims_read_parm\n\

!endif\n");

  fprintf(outf,"oef2wims_version=%s\n",VERSION);

  _out(t_head2);

  _out(t_head);

  _out(t_lang);

  if(aocnt>0) {

    int i;

    fprintf(outf,"\nansorder=");

    for(i=0;i<aocnt;i++) {

      if(ao[i]==t_ans) fprintf(outf,"r");

      else fprintf(outf,"c");

      if(i<aocnt-1) fprintf(outf,",");

    }

  }

  if(prevarcnt<varcnt) post=varcnt-prevarcnt; else post=0;

  fprintf(outf,"\n\

varcnt=%d\n\

prevarcnt=%d\n\

postvarcnt=%d\n\

replycnt=%d\n\

choicecnt=%d\n\

conditioncnt=%d\n\

feedbackcnt=%d\n\

format=%s\n\n\

val1=$imagedir\n\

val2=$confparm1\n\

val3=$confparm2\n\

val4=$confparm3\n\

val5=$confparm4\n\n\

!if $testcondition=yes\n\

 !goto test\n\

!endif\n\

!if $status=waiting\n\

 !exit\n\

!endif\n\n",varcnt+1,prevarcnt,post,answercnt,choicecnt,

          conditioncnt,feedbackcnt,format);

  varcnt=start_varcnt; deftag=0;

  _out(t_def);

  _out(t_step);

/*    _out(t_wims); */

  _out(t_plot);

  answercnt=1; _out(t_ans);

  choicecnt=1; _out(t_choi);

  deftag=1; prevars=varcnt;

  _out(t_main);

  _out(t_hint);

  _out(t_help);

  _out(t_sol);

  _out(t_latex);

  fprintf(outf,"\n!goto stat\n");

/* second run to output execution codes */

  p_statement(NULL);

  p_hint(NULL);

  p_help(NULL);

  p_solution(NULL);

  p_latex(NULL);

  if(post) {

    fprintf(outf,"\n!exit\n\n:postdef\n"); _out(t_def);

  }

  fprintf(outf,"\n!exit\n\n:feedback\n");

  _out(t_feedback);

  fprintf(outf,"\n!exit\n\n:test\n");

  _out(t_cond2); conditioncnt=1; _out(t_cond);

  fprintf(outf,"\n!exit\n\n:stat\nvsavelist=");

  for(k=0,i=1;i<prevars;i++) {

    if(param[i].save==0) continue;

    if(k>0) fprintf(outf,",");

    k++;

    fprintf(outf,"%d",i);

  }

  fprintf(outf,"\nembedcnt=%d\n",embedcnt);

  fclose(outf);

}

int main(int argc, char *argv[])

{

  int t;

  sp_error=oef_error;

  substitute=substit;

  if(argc<=1) return 0; /* no input file */

  if(argc==2 && strcmp(argv[1],"table")==0) {

    if(verify_order(directives, dir_no, sizeof(directives[0]))) return -1;

    if(verify_order(specialfn, specialfn_no, sizeof(specialfn[0]))) return -1;

    puts("Table orders OK."); return 0;

  }

  if(argc>2) snprintf(outfname,sizeof(outfname),"%s",argv[2]);

  else {

    char *fe;

    snprintf(outfname,sizeof(outfname)-10,"%s",argv[1]);

    fe=outfname+strlen(outfname)-strlen(".oef");

    if(strcasecmp(fe,".oef")==0) *fe=0;

    strcat(fe,".def");

  }

  mdef=getenv("oef2wims_mdef"); if(mdef==NULL) mdef="";

  printf("%s..",argv[1]);

  t=getinp(argv[1]);

  if(t<0) oef_error("Source file bad or too long.");

  if(t==0) oef_error("Empty source file.");

  if(checkparentheses(inpbuf,1)!=0) oef_error("Unmatched parentheses");

  outf=fopen(outfname,"w"); if(outf==NULL) oef_error("Unable to open output file.");

  fclose(outf); remove(outfname);

  vbuf_statement[0]=vbuf_hint[0]=vbuf_help[0]=vbuf_solution[0]=0;

  param[1].name="imagedir";param[1].type=pt_text;

  param[2].name="confparm1";param[2].type=pt_text;

  param[3].name="confparm2";param[3].type=pt_text;

  param[4].name="confparm3";param[4].type=pt_text;

  param[5].name="confparm4";param[5].type=pt_text;

  start_varcnt=6;

  process();

  output();

  printf(" -> %s\n",outfname);

  return 0;

}