OS/2 Professional/OS2PRO194.ISO/os2/prgramer/minix/wc.c

C/C++ Source or Header | 1989-12-27 | 5.2 KB | 217 lines

/*
 * wc - count lines, words and characters    Author: David
 * Messer
 */
/* $Header: d:/rcs/D:/RCS/RCS/wc.c 1.1 89/12/27 03:07:23 RCA Exp $
 * $Log:    wc.c $
 * Revision 1.1  89/12/27  03:07:23  RCA
 * Initial revision
 *
 */

#include "stdio.h"
#define isdigit(c) (c >= '0' && c <= '9')
#define isspace(c) (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r')

/*
 * Usage:  wc [-lwc] [names]
 *
 * Flags: l - count lines. w - count words. c - count characters.
 *
 * Flags l, w, and c are default. Words are delimited by any
 * non-alphabetic character.
 *
 * Released into the PUBLIC-DOMAIN 02/10/86
 *
 * If you find this program to be of use to you, a donation of
 * whatever you think it is worth will be cheerfully accepted.
 *
 * Written by: David L. Messer P.O. Box 19130, Mpls, MN,  55119
 * Program (heavily) modified by Andy Tanenbaum */


int     lflag;        /* Count lines */
int     wflag;        /* Count words */
int     cflag;        /* Count characters */

long    lcount;        /* Count of lines */
long    wcount;        /* Count of words */
long    ccount;        /* Count of characters */

long    ltotal;        /* Total count of lines */
long    wtotal;        /* Total count of words */
long    ctotal;        /* Total count of characters */
main(argc, argv)
   int     argc;
   char   *argv[];
{
int     k;
char   *cp;
int     tflag, files;
int     i;

    if (argc == 1)
      {
      printf ("\n █▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀█");
      printf ("\n █ WC       (Count words, lines, chars)    $Author: RCA $   █");
      printf ("\n █          $Date: 89/12/27 03:07:23 $     $Revision: 1.1 $ █");
      printf ("\n █ Usage:   WC [-lwc] filename(s)                           █");
      printf ("\n █ Note:    Words are delimited by any non-alphanumeric     █");
      printf ("\n █          character.                                      █");
      printf ("\n █ Options: -l: Print number of lines.                      █");
      printf ("\n █          -w: Print number of words.                      █");
      printf ("\n █          -c: Print number of characters.                 █");
      printf ("\n █          [ -lwc is the default ]                         █");
      printf ("\n █ OS:      Works under OS/2 or DOS.                        █");
      printf ("\n █ Credits: David Messer, Andy Tannenbaum, K&R.             █");
      printf ("\n █▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄█\n");
      exit(1);
      }

/* Get flags. */
   files = argc - 1;
   k = 1;
   cp = argv[1];
   if (argc > 1 && *cp++ == '-')
   {
      files--;
      k++;            /* points to first file */
      while (*cp != 0)
      {
     switch (*cp)
     {
     case 'l':
        lflag++;
        break;
     case 'w':
        wflag++;
        break;
     case 'c':
        cflag++;
        break;
     default:
        usage();
     }
     cp++;
      }
   }
/* If no flags are set, treat as wc -lwc. */
   if (!lflag && !wflag && !cflag)
   {
      lflag = 1;
      wflag = 1;
      cflag = 1;
   }
/* Process files. */
   tflag = files >= 2;        /* set if # files > 1 */

/* Check to see if input comes from std input. */
   if (k >= argc)
   {
      count();
   /*
    * if(lflag) printf(" %6D", lcount); if(wflag) printf(" %6D",
    * wcount); if(cflag) printf(" %6D", ccount); zxzxzx (edit
    * tag)
    */
      if (lflag)
     printf(" %6d", lcount);
      if (wflag)
     printf(" %6d", wcount);
      if (cflag)
     printf(" %6d", ccount);
      printf(" \n");
      fflush(stdout);
      exit(0);
   }
/* There is an explicit list of files.  Loop on files. */
   while (k < argc)
   {
      fclose(stdin);
      if (fopen(argv[k], "r") == NULL)
      {
      /*
       * std_err("wc: cannot open "); std_err(argv[k]);
       * std_err("\n");
       */
     printf("wc: cannot open ");
     printf(argv[k]);
     printf("\n");
     k++;
     continue;
      } else
      {
      /* Next file has been opened as std input. */
     count();
      /*
       * if(lflag) printf(" %6D", lcount); if(wflag) printf("
       * %6D", wcount); if(cflag) printf(" %6D", ccount);
       * printf(" %s\n", argv[k]);
       */
     if (lflag)
        printf(" %6d", lcount);
     if (wflag)
        printf(" %6d", wcount);
     if (cflag)
        printf(" %6d", ccount);
     printf(" %s\n", argv[k]);
      }
      k++;
   }

   if (tflag)
   {
   /*
    * if(lflag) printf(" %6D", ltotal); if(wflag) printf(" %6D",
    * wtotal); if(cflag) printf(" %6D", ctotal); printf("
    * total\n");
    */
      if (lflag)
     printf(" %6d", ltotal);
      if (wflag)
     printf(" %6d", wtotal);
      if (cflag)
     printf(" %6d", ctotal);
      printf(" total\n");
   }
   fflush(stdout);
   exit(0);
}
count()
{
register int c;
register int word = 0;
   lcount = 0;
   wcount = 0;
   ccount = 0L;

   while ((c = getc(stdin)) > 0)
   {
      ccount++;

      if (isspace(c))
      {
     if (word)
        wcount++;
     word = 0;
      } else
      {
     word = 1;
      }

      if (c == '\n' || c == '\f')
     lcount++;
   }
   ltotal += lcount;
   wtotal += wcount;
   ctotal += ccount;
}
usage()
{
/*
 * std_err("Usage: wc [-lwc] [name ...]\n");
 */
   printf("Usage: wc [-lwc] [name ...]\n");
   exit(1);
}