152 lines
2.9 KiB
C
152 lines
2.9 KiB
C
/* wc - count lines, words and characters Author: David Messer */
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#include <ctype.h>
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#include <stdlib.h>
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#include <stdio.h>
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/*
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*
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* Usage: wc [-lwc] [names]
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*
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* Flags:
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* l - count lines.
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* w - count words.
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* c - count characters.
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*
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* Flags l, w, and c are default.
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* Words are delimited by any non-alphabetic character.
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*
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* Released into the PUBLIC-DOMAIN 02/10/86
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*
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* If you find this program to be of use to you, a donation of
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* whatever you think it is worth will be cheerfully accepted.
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*
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* Written by: David L. Messer
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* P.O. Box 19130, Mpls, MN, 55119
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* Program (heavily) modified by Andy Tanenbaum
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*/
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int lflag; /* Count lines */
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int wflag; /* Count words */
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int cflag; /* Count characters */
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long lcount; /* Count of lines */
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long wcount; /* Count of words */
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long ccount; /* Count of characters */
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long ltotal; /* Total count of lines */
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long wtotal; /* Total count of words */
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long ctotal; /* Total count of characters */
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_PROTOTYPE(int main, (int argc, char **argv));
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_PROTOTYPE(void count, (FILE *f));
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_PROTOTYPE(void usage, (void));
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int main(argc, argv)
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int argc;
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char *argv[];
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{
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int k;
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char *cp;
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int tflag, files;
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/* Get flags. */
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files = argc - 1;
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k = 1;
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cp = argv[1];
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if (argc > 1 && *cp++ == '-') {
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files--;
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k++; /* points to first file */
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while (*cp != 0) {
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switch (*cp) {
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case 'l': lflag++; break;
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case 'w': wflag++; break;
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case 'c': cflag++; break;
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default: usage();
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}
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cp++;
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}
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}
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/* If no flags are set, treat as wc -lwc. */
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if (!lflag && !wflag && !cflag) {
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lflag = 1;
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wflag = 1;
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cflag = 1;
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}
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/* Process files. */
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tflag = files >= 2; /* set if # files > 1 */
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/* Check to see if input comes from std input. */
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if (k >= argc) {
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count(stdin);
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if (lflag) printf(" %6ld", lcount);
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if (wflag) printf(" %6ld", wcount);
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if (cflag) printf(" %6ld", ccount);
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printf(" \n");
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fflush(stdout);
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exit(0);
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}
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/* There is an explicit list of files. Loop on files. */
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while (k < argc) {
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FILE *f;
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if ((f = fopen(argv[k], "r")) == NULL) {
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fprintf(stderr, "wc: cannot open %s\n", argv[k]);
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} else {
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count(f);
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if (lflag) printf(" %6ld", lcount);
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if (wflag) printf(" %6ld", wcount);
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if (cflag) printf(" %6ld", ccount);
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printf(" %s\n", argv[k]);
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fclose(f);
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}
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k++;
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}
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if (tflag) {
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if (lflag) printf(" %6ld", ltotal);
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if (wflag) printf(" %6ld", wtotal);
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if (cflag) printf(" %6ld", ctotal);
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printf(" total\n");
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}
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fflush(stdout);
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return(0);
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}
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void count(f)
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FILE *f;
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{
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register int c;
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register int word = 0;
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lcount = 0;
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wcount = 0;
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ccount = 0L;
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while ((c = getc(f)) != EOF) {
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ccount++;
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if (isspace(c)) {
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if (word) wcount++;
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word = 0;
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} else {
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word = 1;
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}
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if (c == '\n' || c == '\f') lcount++;
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}
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ltotal += lcount;
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wtotal += wcount;
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ctotal += ccount;
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}
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void usage()
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{
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fprintf(stderr, "Usage: wc [-lwc] [name ...]\n");
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exit(1);
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}
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