[01] wc

main.c

Makefile

wc.c

main.c

#include <stdio.h> 
#include <stdlib.h> 
 
extern void countfile(), printtotal(); 
 
main(int argc, char *argv[]) 
{ 
   register FILE *fp; 
   register int i; 
 
   if (argc == 1) 
      countfile(stdin, ""); 
   else { 
      i = 1; 
      while (i < argc) { 
         if ((fp = fopen(argv[i], "r")) == NULL) 
            fprintf(stderr, "%s: %sA≫(¸|) ¿­ ¼o ¾ø½A´I´U\n", argv[0], argv[i]); 
         else { 
            countfile(fp, argv[i]); 
            fclose(fp); 
         } 
         i++; 
      } 
      if (argc > 2) printtotal(); 
   } 
   exit(0); 
}

wc.c

#include <stdio.h>
#define BufSize 16
#define Sentinel '\0'
static unsigned char buf[BufSize*2+1];
static unsigned char *lexeme_beginning, *forward;
#define NextChar() ((*forward)? *forward++:((forward=buf+BufSize+1),fillbuf(fp)))
static int wl = 0, ww = 0, wc =0; // Line, Word, Char Count
static int whiteChars[256] = {
   0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0,
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
#define IsWhite(c) (whiteChars[c])
static unsigned char fillbuf(FILE *fp)
{
   register unsigned char *i, *j;
   /* move the rest of token to the other buffer */
   i = lexeme_beginning;
   j = lexeme_beginning - BufSize;
   while (j <= forward)
      *(j++) = *(i++) ;
   lexeme_beginning -= BufSize;
   buf[BufSize + fread(buf+BufSize, 1, BufSize, fp)] = Sentinel;
   return buf[BufSize];
}
void countfile(FILE *fp, char *fname)
{
   int flag = 0; // Word flag
   int fc = 0, fl = 0, fw = 0; // each file count
   unsigned char ch;
   buf[BufSize*2] = Sentinel;
   forward = buf + BufSize*2;
   lexeme_beginning = buf + BufSize;
   /* FILL IN THIS BLANK */
   while(ch = NextChar())
   {
      ++fc; // Char count++
      if(ch == '\n')
         fl++; // Line Count++
      if(IsWhite(ch))
      {
         lexeme_beginning = forward;
         flag = 0;
      }
      else if (flag == 0)
      {
         flag = 1;
         ++fw; // Word Count++
      }
   }
   wl += fl; ww += fw; wc += fc; // add
   printf("Line || Word || Char || File\n----------------------------\n%4d || %4d || %4d || %s\n============================\n", fl, fw, fc, fname);
}
void printtotal()
{
   /* FILL IN THIS BLANK */
   printf("Line || Word || Char ||\n-----------------------\n%4d || %4d || %4d || 합계\n============================\n", wl, ww, wc);
}

Makefile


wc: main.o wc.o 
   cc -o wc main.o wc.o 
 
main.o: main.c 
   cc -c main.c 
 
wc.o: wc.c 
   cc -c wc.c 
 
clean: 
   rm -f *.o