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.

 */

/* Interface Yacas to wims */

/*************** Customization: change values hereafter ****************/

#include "common.h"

/* This is yacas home page. To be kept up to date. */

#define homepage "http://yacas.sourceforge.net/"

/* String to tell the program to quit. */

char *quitstring="\nquit\n";

/* The way to print a string in the program. */

char *stringprinter="\"%s\"\n";

/* limit of input/output file sizes */

int fsizelim=131072;

int precision=20; /* default */

char *inprompt="\nIn>";

char *outprompt="Out>";

char *nameofcmd="yacas -p";

char *firstupper[]={

"abs",

"and",

"arg",

"complex",

"conjugate",

"cos",

"cosh",

"cot",

"coth",

"csc",

"csch",

"denom",

"echo",

"exp",

"factor",

"factorize",

"for",

"i",

"if",

"im",

"infinity",

"integrate",

"limit",

"ln",

"max",

"min",

"not",

"or",

"pi",

"print",

"random",

"re",

"round",

"sec",

"sech",

"sign",

"simplify",

"sin",

"sinh",

"solve",

"sqrt",

"tan",

"tanh",

"undefined",

"until",

"while",

};

int firstupperno=(sizeof(firstupper)/sizeof(firstupper[0]));

char header[]="\

tg(x) := Tan(x)\n\

log(x) := Ln(x)\n\

e := Exp(1)\n\

E := Exp(1)\n\

sgn(x) := Sign(x)\n\

ch(x) := Cosh(x)\n\

sh(x) := Sinh(x)\n\

th(x) := Tanh(x)\n\

acos(x) := ArcCos(x)\n\

arccos(x) := ArcCos(x)\n\

asin(x) := ArcSin(x)\n\

arcsin(x) := ArcSin(x)\n\

atan(x) := ArcTan(x)\n\

arctan(x) := ArcTan(x)\n\

arctg(x) := ArcTan(x)\n\

Argch(x) := ArcCosh(x)\n\

argch(x) := ArcCosh(x)\n\

acosh(x) := ArcCosh(x)\n\

Argsh(x) := ArcSinh(x)\n\

argsh(x) := ArcSinh(x)\n\

asinh(x) := ArcSinh(x)\n\

Argth(x) := ArcTanh(x)\n\

argth(x) := ArcTanh(x)\n\

atanh(x) := ArcTanh(x)\n\

ctg(x) := Cot(x)\n\

rint(x) := Round(x)\n\

RANDOM() := Random()\n\

SOLVE(x,y) := Solve(x,y)\n\

";

struct {

    char *wname; char *defaultval; char *yacasset;

} setups[]={

      {"w_yacas_precision", "20", "\\precision=",},

      {"w_yacas_serieslength", "8", "\\serieslength="}

};

/* names which are not allowed */

char *illegal[]={

    "SystemCall", "Use", "Vi", "GetYacasPID", "ShowPS",

      "MakeFunctionPlugin"

};

int illegal_no=(sizeof(illegal)/sizeof(illegal[0]));

 /* name parts which are not allowed */

 /* 11/3/2013 add "@" and "ConcatStrings" */

char *illpart[]={

    "File", "Load", "Plot","ConcatStrings" ,"@"

};

int illpart_no=(sizeof(illpart)/sizeof(illpart[0]));

/***************** Nothing should need change hereafter *****************/

char *progname="yacas";

 /* check for security violations in command string */

void check_parm(char *pm)

{

    char *p, *pp, *p2, buf[16];

    int i;

    for(p=pm;*p!=0;p++) {

      if(*p!='\\') continue;

      if(*(p+1)=='\n') *p=*(p+1)=' ';

      if(*(p+1)==0) *p=' ';

    }

    for(p=pm; *p!=0; p++) {

      if(!isalpha(*p)) continue;

      for(p2=p+1; isalpha(*p2); p2++);

      if(p2-p>10) {p=p2-1; continue;}

      memmove(buf,p,p2-p); buf[p2-p]=0; pp=p; p=p2-1;

      for(p2=buf; islower(*p2); p2++);

      if(*p2) continue;

      i=search_list(firstupper,firstupperno,sizeof(firstupper[0]),buf);

      if(i>=0) *pp=toupper(*pp);

    }

    find_illegal(pm);

}

/* process and print yacas output */

void output(char *p)

{

    int i,n;

    char *pp, *pe, *p1, *pt;

    char outbuf[MAX_LINELEN+1];

    pp=strstr(p,inprompt); if(pp==NULL) return;

    while(pp!=NULL && *pp!=0) {

      pp+=strlen(inprompt); p1=find_word_start(pp);

      pe=strstr(pp,outprompt);

      pt=strstr(pp,inprompt);

      if(pe==NULL || (pt!=NULL && pt<pe)) { /* error */

          if(pt==NULL) pp=pp+strlen(pp); else pp=pt;

          n=pp-p1; if(n>MAX_LINELEN) n=MAX_LINELEN; if(n<0) n=0;

          memmove(outbuf,p1,n); outbuf[n]=0;

          fprintf(stderr,"%s\n",outbuf);

          puts(""); continue;

      }

      else {

          *pe=0; pe=find_word_start(pe+strlen(outprompt));

      }

      pp=strstr(pe,inprompt);

      if(pp==NULL) pp=pe+strlen(pe);

      if(*p1==0) {

          if(pp>=pe+sizeof(outbuf)) break;

          n=pp-pe; if(n>MAX_LINELEN) n=MAX_LINELEN; if(n<0) n=0;

          memmove(outbuf,pe,n); outbuf[n]=0;

      }

      else {

          snprintf(outbuf,sizeof(outbuf),"%s",p1);

          n=strlen(outbuf);

      }

/* make every output one-line */

      for(i=0;i<n;i++) {

          if(outbuf[i]=='\n') outbuf[i]=' ';

      }

/* strip leading and trailing spaces */

      for(i=n-1;i>=0 && isspace(outbuf[i]); i--) outbuf[i]=0;

      if(outbuf[i]==';') outbuf[i]=0;

      for(pe=outbuf; *pe; pe++) if(isupper(*pe)) *pe=tolower(*pe);

      for(pe=outbuf; isspace(*pe); pe++);

      /* strip_zeros(pe); */

      puts(pe);

    }

}

void about(void)

{

    cmdparm="-v"; prepabout("",outputfname,NULL);

    if(readabout()>0)

      printf("<a target=\"wims_external\" href=\"%s\" >Yacas %s</a>",homepage,aboutbuf);

}

char *dynsetup(char *ptr, char *end)

{

    int i; char *p, *pp;

/* to adapt

    if(wseed!= NULL) {

     snprintf(ptr,end-ptr,"\nwimsseed:make_random_state(%u);\nset_random_state(wimsseed);\n",atoi(wseed)&(0x7FFFFFFF));

     ptr+=strlen(ptr);

     }

*/    for(i=0;i<SETUP_NO;i++) {

      p=getenv(setups[i].wname);

      if(p!=NULL) for(pp=p;*pp;pp++) if(!isspace(*pp) && !isalnum(*pp)) p="";

      if(p==NULL || *p==0) p=setups[i].defaultval;

      if(strstr(setups[i].wname,"yacas_precision")!=NULL)

        precision=atoi(p);

      if(precision<0) precision=-precision;

    }

    return ptr;

}

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

{

    prepare1();

    run();

    return 0;

}