4.3BSD - /usr/src/usr.bin/struct/0.args.c

   1: #ifndef lint
   2: static char sccsid[] = "@(#)0.args.c	4.1	(Berkeley)	2/11/83";
   3: #endif not lint
   4: 
   5: #include <stdio.h>
   6: #
   7: #include "def.h"
   8: int errflag;
   9: FILE *infd;
  10: 
  11: 
  12: int intcase=1, arbcase=0;
  13: int exitsize=0;         /* max number of nodes to be left in loop without iterating */
  14: int maxnode=400;    /* max number of nodes */
  15: int maxhash=347;    /* prime number = size of hash table */
  16: int progress=0;     /* if not 0, print line number every n lines, n = progress */
  17: int labinit=10;         /* labels generated starting with labinit */
  18: int labinc=10;          /* labels increase by labinc */
  19: int inputform=0;        /* = 0 if freeform input, 1 if standard form input */
  20: int debug=0;
  21: int levbrk=1;   /* true implies multilevel breaks; false implies single-level breaks only */
  22: int levnxt=1;   /* true implies multilevel nexts; false implies single-level nexts only */
  23: 
  24: 
  25: int maxprogsw=12;       /* number of program switches which can be set */
  26: char *progsw[]      = {"i", "a",
  27:             "e", "m",
  28:             "h", "p",
  29:             "t", "c",
  30:             "s", "d",
  31:             "b", "n"
  32:             };
  33: 
  34: 
  35: int *swval[]        = {&intcase, &arbcase,
  36:             &exitsize, &maxnode,
  37:             &maxhash, &progress,
  38:             &labinit, &labinc,
  39:             &inputform, &debug,
  40:             &levbrk, &levnxt
  41:             };
  42: 
  43: 
  44: char *getargs(argc, argv)
  45: int argc; char *argv[];
  46:     {
  47:     int n, infile;
  48:     infile = 0;
  49: 
  50:     for (n = 1; n < argc; ++n)
  51:         {
  52:         if (argv[n][0] == '-')
  53:             setsw(&argv[n][1]);
  54:         else
  55:             {
  56:             if (infile != 0)
  57:                 error("multiple input files - using first one: ", argv[infile],"");
  58:             else
  59:                 infile = n;
  60:             }
  61:         }
  62:     if (errflag)
  63:         exit(1);
  64:     if (!infile) faterr("no input file","","");
  65:     infd = fopen(argv[infile],"r");
  66:     if (infd == NULL)
  67:         faterr("can't open input file:",argv[infile],"");
  68:     return;
  69:     }
  70: 
  71: setsw(str)
  72: char *str;
  73:     {
  74:     int i, val, swnum;
  75: #define maxtemp 15
  76:     char temp[maxtemp];
  77:     for (i = 0; 'a' <= str[i] && str[i] <= 'z'; ++i)
  78:         {
  79:         if (i >= maxtemp)
  80:             {
  81:             error("invalid switch:",str,"");
  82:             errflag = 1;
  83:             }
  84:         temp[i] = str[i];
  85:         }
  86:     temp[i] = '\0';
  87: 
  88:     swnum = find(temp,progsw,maxprogsw);
  89:     if (swnum == -1)
  90:         {
  91:         error("invalid switch:", str,"");
  92:         errflag = 1;
  93:         return;
  94:         }
  95:     if (str[i] == '\0')
  96:         *(swval[swnum]) = !*(swval[swnum]);
  97:     else
  98:         {
  99:         sscanf(&str[i],"%d",&val);
 100:         *(swval[swnum]) = val;
 101:         }
 102:     }

Defined functions

Defined variables

Defined macros