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  1. /*    Copyright (C) 1998-2003 XIAO, Gang of Universite de Nice - Sophia Antipolis
  2.  *
  3.  *  This program is free software; you can redistribute it and/or modify
  4.  *  it under the terms of the GNU General Public License as published by
  5.  *  the Free Software Foundation; either version 2 of the License, or
  6.  *  (at your option) any later version.
  7.  *
  8.  *  This program is distributed in the hope that it will be useful,
  9.  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  10.  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11.  *  GNU General Public License for more details.
  12.  *
  13.  *  You should have received a copy of the GNU General Public License
  14.  *  along with this program; if not, write to the Free Software
  15.  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  16.  */
  17.  
  18.         /* Interface gp to wims */
  19.  
  20. /* This program is now limited to pari version 2.??. */
  21.  
  22. /*************** Customization: change values hereafter ****************/
  23.  
  24.         /* gp prompt string */
  25. #define gpprompt "\n? "
  26.         /* This is the good bye string of gp, signaling end of output. */
  27. #define goodbyestring "Good bye!"
  28.         /* This is PARI home page. To be kept up to date. */
  29. #define homepage "http://pari.math.u-bordeaux.fr/"
  30.         /* String to tell the program to quit. */
  31. #define quitstring "\nquit\n"
  32.         /* The way to print a string in the program. */
  33. #define stringprinter "print(\"%s\")\n"
  34.         /* limit of input/output file sizes */
  35. int fsizelim=131072;
  36. int precision=28;       /* default */
  37.  
  38. char *nameofcmd="gp";
  39. char *gprcenv="GPRC";
  40. char *gprc="../.gprc";
  41. char header[]="default(output,0)\n\
  42. alias(ln,log)\n\
  43. alias(pi,Pi)\n\
  44. alias(euler,Euler)\n\
  45. alias(PI,Pi)\n\
  46. i=I\n\
  47. e=exp(1)\n\
  48. E=exp(1)\n\
  49. { sec(x)=return(1/cos(x)) }\n\
  50. { csc(x)=return(1/sin(x)) }\n\
  51. { lg(x) =log(x)/log(10) }\n\
  52. { log2(x) =log(x)/log(10) }\n\
  53. alias(log10,lg)\n\
  54. alias(sgn,sign)\n\
  55. alias(ch,cosh)\n\
  56. alias(sh,sinh)\n\
  57. alias(th,tanh)\n\
  58. alias(arccos,acos)\n\
  59. alias(arcsin,asin)\n\
  60. alias(tg,tan)\n\
  61. alias(arctan,atan)\n\
  62. alias(arctg,atan)\n\
  63. alias(Argch,acosh)\n\
  64. alias(Argsh,asinh)\n\
  65. alias(Argth,atanh)\n\
  66. alias(argch,acosh)\n\
  67. alias(argsh,asinh)\n\
  68. alias(argth,atanh)\n\
  69. alias(cot,cotan)\n\
  70. alias(ctg,cotan)\n\
  71. alias(rint,round)\n\
  72. alias(RANDOM,random)\n\
  73. alias(SOLVE,solve)\n\
  74. alias(parirandom,random)\n\
  75. alias(parisolve,solve)\n\
  76. ";
  77.  
  78. struct {
  79.     char *wname;    char *defaultval;    char *gpset;
  80. } setups[]={
  81.       {"w_pari_precision",      "20",   "\\p "},
  82.       {"w_pari_serieslength",   "8",    "\\ps "}
  83. };
  84.  
  85.         /* names which are not allowed */
  86. char *illegal[]={
  87.         "alias","allocatemem","default","extern",
  88.       "getrand","getstack","input","psdraw",
  89.       "read","system","install"
  90. };
  91.  
  92.         /* name parts which are not allowed */
  93. char *illpart[]={
  94.     "plot", "write", "help"
  95. };
  96.  
  97. /***************** Nothing should need change hereafter *****************/
  98.  
  99. #define progname "pari"
  100. #include "common.h"
  101. #include "common.c"
  102.  
  103. int pariray=0;
  104.  
  105.         /* check for security violations in command string */
  106. void check_parm(char *pm)
  107. {
  108.     char *p;
  109.     for(p=pm;*p!=0;p++) {
  110.           /* Underscore replacement */
  111.         if(*p=='_') {*p='K'; continue;}
  112.           /* no escape commands. */
  113.         if(*p!='\n') continue;
  114.         while(*p!=0 && isspace(*p)) p++;
  115.         if(*p=='\\' && *(p+1)!='\\' && *(p+1)!='v' && *(p+1)!='p') *p='.';
  116.         if(*p=='\\') p++;
  117.     }
  118.     find_illegal(pm);
  119. }
  120.  
  121.         /* process and print gp output */
  122. void output(char *p)
  123. {
  124.     int i,n;
  125.     char *pp, *pe, *pt;
  126.    
  127.     if(pariray) {puts(p); return;}
  128.     pp=strstr(p,gpprompt); if(pp==NULL) return;
  129.     pe=strstr(pp,goodbyestring);
  130.     if(pe>=pp) *pe=0;
  131.     while(pp!=NULL) {
  132.         pp++;
  133.         pe=strstr(pp,gpprompt);
  134.         if(pe>=pp) *pe=0;
  135.         pp=strchr(pp,'\n');
  136.         if(pp==NULL) {
  137.             emptyline:
  138.             puts(""); pp=pe; continue;
  139.         }
  140.         pp++; n=strlen(pp);
  141.         if(n==0) goto emptyline;
  142.                 /* make every output one-line */
  143.         for(i=0;i<n;i++) {
  144.             if(*(pp+i)=='\n') {
  145.                 if(*(pp+i+1)!='%') *(pp+i)=' ';
  146.                 else {*(pp+i)=0; break;}
  147.             }
  148.         }
  149.           /* strip leading and trailing spaces */
  150.         while(isspace(*pp) && pp<pe) pp++;
  151.         pt=pp+strlen(pp)-1;
  152.         while(isspace(*pt) && pt>pp) *pt--=0;
  153.           /* remove parentheses of matrix output */
  154.         if(memcmp(pp,"Mat(",4)==0 && *pt==')' && find_matching(pp+4,')')==pt) {
  155.             *(pt--)=0; pp+=4;
  156.         }
  157.         if(*pp=='[' && *pt==']' && find_matching(pp+1,']')==pt) {
  158.             *(pt--)=0; pp++;
  159.         }
  160.         strip_zeros(pp);
  161.         puts(pp); pp=pe;
  162.     }
  163. }
  164.  
  165. void about(void)
  166. {
  167.     char *p;
  168.  
  169.     prepabout("\\v\nquit\n",outputfname,NULL);
  170.     if(readabout()>0) {
  171.         p=strchr(aboutbuf,'\n'); if(p!=NULL) *p=0;
  172.         strip_trailing_spaces(aboutbuf);
  173.         printf("<A HREF=\"%s\">%s</A>",homepage,aboutbuf);
  174.     }
  175. }
  176.  
  177. char *dynsetup(char *ptr, char *end)
  178. {
  179.     int i;
  180.     char *p, *pp;
  181.  
  182.     snprintf(ptr,end-ptr,"\nsetrand(%u)\n",seed&(0x7FFFFFFF));
  183.     ptr+=strlen(ptr);
  184.     for(i=0;i<SETUP_NO;i++) {
  185.         p=getenv(setups[i].wname);
  186.         if(p!=NULL) for(pp=p;*pp;pp++) if(!isspace(*pp) && !isalnum(*pp)) p="";
  187.         if(p==NULL || *p==0) p=setups[i].defaultval;
  188.         snprintf(ptr,end-ptr,"%s%s\n",setups[i].gpset,p);
  189.         ptr+=strlen(ptr);
  190.         if(strstr(setups[i].wname,"pari_precision")!=NULL)
  191.           precision=atoi(p);
  192.         if(precision<0) precision=-precision;
  193.     }
  194.     if(pariray) snprintf(ptr,end-ptr,"\\e0\n");
  195.     else snprintf(ptr,end-ptr,"\\e1\n");
  196.     ptr+=strlen(ptr);
  197.     return ptr;
  198. }
  199.  
  200. int main(int argc,char *argv[])
  201. {
  202.     char *p;
  203.  
  204.     p=getenv("pari_ray");
  205.     if(p!=NULL && *p!=0) {pariray=1; fsizelim=4*1024*1024;}
  206.     setenv(gprcenv,gprc,1);
  207.     prepare1();
  208.     setenv("GPTMPDIR",tmp_dir,1);
  209.     run();
  210.     return 0;    
  211. }
  212.  
  213.