2.11BSD#431 - /usr/src/new/PORT/B/src/bsmall/b2mai.c

   1: /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1984. */
   2: static char rcsid[]="$Header: b2mai.c,v 1.1 84/06/28 00:49:17 timo Exp $";
   3: 
   4: /* B driver for interpreter */
   5: #include "b.h"
   6: #include <sys/types.h>
   7: 
   8: #include "b1obj.h"
   9: #include "b1mem.h"
  10: #include "b2env.h"
  11: #include "b2scr.h"
  12: #include "b2err.h"
  13: #include "b2fil.h"
  14: #include "b2sig.h"
  15: #include "b2syn.h"
  16: #include "b2sem.h"
  17: #include "b2sou.h"
  18: 
  19: bool call_error, in_process;
  20: 
  21: main(argc, argv) int argc; string argv[]; {
  22:     in_process= No; call_error= No;
  23:     call(argc, argv);
  24:     if (call_error) exit(-1);
  25:     in_process= Yes;
  26:     init();
  27:     call(argc, argv);
  28:     bye(0);
  29: }
  30: 
  31: #define Cllerr stderr
  32: 
  33: string pname;    /* program name */
  34: 
  35: Hidden Procedure erm(m, n, argc, pargc, pargv) string m, n; int argc, pargc; string pargv[]; {
  36:     fprintf(Cllerr,
  37:  "*** There is something I don't quite get in your call of %s\n", pname);
  38:     show_call(argc, pargc, pargv);
  39:     fprintf(Cllerr, "*** The problem is: %s %s\n", m, n);
  40:     if (in_process) bye(-1);
  41:     call_error= Yes;
  42: }
  43: 
  44: Hidden Procedure call(pargc, pargv) int pargc; string pargv[]; {
  45:     int argc; string *argv;
  46: 
  47:     pname = pargv[0];
  48:     argc = pargc-1;
  49:     argv = pargv+1;
  50:     while (argc >= 0)
  51:     if (argc > 0 && argv[0][0] == '-' && argv[0][1] != '\0') {
  52:         if (argv[0][1] == 'q') { if (in_process) bye(0); }
  53:         else if (argv[0][1] == 'i') {
  54:             filtered= Yes;
  55:             cmd_prompt= "\001>";
  56:             eg_prompt=  "\001E";
  57:             raw_prompt= "\001R";
  58:             qn_prompt=  "\001Y";
  59:         } else erm("I never learned about the option", argv[0], argc, pargc, pargv);
  60:         argc -= 1;
  61:         argv += 1;
  62:     } else {
  63:         if (argc == 0 || (argv[0][0] == '-' && argv[0][1] == '\0')) {
  64:             release(iname);
  65:             iname = Vnil;
  66:             ifile = stdin;
  67:         } else {
  68:             release(iname);
  69:             iname = mk_text(*argv);
  70:             ifile = fopen(*argv, "r");
  71:         }
  72:         if (ifile != NULL) { if (in_process) process();
  73:         } else erm("can't open input file", *argv, argc, pargc, pargv);
  74:         if (ifile != NULL && ifile != stdin) fclose(ifile);
  75:         ++argv; --argc;
  76:     }
  77: }
  78: 
  79: Hidden Procedure show_call(eargc, pargc, pargv)
  80:  int eargc, pargc; string pargv[]; {
  81:     int argc= pargc; string *argv= pargv;
  82:     intlet p, pos= 4;
  83:     fprintf(Cllerr, "    ");
  84:     while (argc > 0) {
  85:         fprintf(Cllerr, *argv);
  86:         pos+= strlen(*argv);
  87:         if (argc == eargc) p= pos-1;
  88:         ++argv; --argc;
  89:         if (argc > 0) {
  90:             putc(' ', Cllerr);
  91:             pos++;
  92:         }
  93:     }
  94:     putc('\n', Cllerr);
  95:     for (pos= 0; pos < p; pos++) putc(' ', Cllerr);
  96:     fprintf(Cllerr, "^\n");
  97: }
  98: 
  99: Hidden Procedure init() {
 100:     initmem();
 101:     initnum();
 102:     initenv();
 103:     inittors();
 104:     initsou();
 105:     initfprs();
 106:     inithow();
 107:     initscr();
 108:     setprmnv();
 109:     getprmnv();
 110:     inisigs();
 111: }
 112: 
 113: Visible Procedure process() {
 114:     re_screen();
 115:     alino= 0; Eof= Eof0= No;
 116:     xeq= Yes; skipping= No; cntxt= In_command;
 117:     if (setjmp(main_loop) != 0) /* long jump occurred */ {
 118:         re_files();
 119:         if (Eof) return;
 120:         xeq= interactive; skipping= !interactive;
 121:         /* skipping may be reset by command() */
 122:     }
 123:     inistreams();
 124:     re_env();
 125:     active_reads= 0;
 126:     while (!Eof) {
 127:         re_streams();
 128:         cntxt= In_command; resexp= Voi; lino= 0;
 129:         cur_ilev= 0;
 130:         terminated= No;
 131:         if (ilev(Yes) > 0) parerr("outer indentation not zero", "");
 132:         findceol(); command();
 133:         re_files();
 134:     }
 135: }

Defined functions

Defined variables

Defined macros