156 lines
3.3 KiB
C
156 lines
3.3 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Mini wc implementation for busybox
|
|
*
|
|
* Copyright (C) 2000 Edward Betts <edward@debian.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
#include "busybox.h"
|
|
#include <stdio.h>
|
|
#include <getopt.h>
|
|
|
|
static int total_lines, total_words, total_chars, max_length;
|
|
static int print_lines, print_words, print_chars, print_length;
|
|
|
|
void print_counts(int lines, int words, int chars, int length,
|
|
const char *name)
|
|
{
|
|
char const *space = "";
|
|
|
|
if (print_lines) {
|
|
printf("%7d", lines);
|
|
space = " ";
|
|
}
|
|
if (print_words) {
|
|
printf("%s%7d", space, words);
|
|
space = " ";
|
|
}
|
|
if (print_chars) {
|
|
printf("%s%7d", space, chars);
|
|
space = " ";
|
|
}
|
|
if (print_length)
|
|
printf("%s%7d", space, length);
|
|
if (*name)
|
|
printf(" %s", name);
|
|
putchar('\n');
|
|
}
|
|
|
|
static void wc_file(FILE * file, const char *name)
|
|
{
|
|
int lines, words, chars, length;
|
|
int in_word = 0, linepos = 0;
|
|
int c;
|
|
|
|
lines = words = chars = length = 0;
|
|
while ((c = getc(file)) != EOF) {
|
|
chars++;
|
|
switch (c) {
|
|
case '\n':
|
|
lines++;
|
|
case '\r':
|
|
case '\f':
|
|
if (linepos > length)
|
|
length = linepos;
|
|
linepos = 0;
|
|
goto word_separator;
|
|
case '\t':
|
|
linepos += 8 - (linepos % 8);
|
|
goto word_separator;
|
|
case ' ':
|
|
linepos++;
|
|
case '\v':
|
|
word_separator:
|
|
if (in_word) {
|
|
in_word = 0;
|
|
words++;
|
|
}
|
|
break;
|
|
default:
|
|
linepos++;
|
|
in_word = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (linepos > length)
|
|
length = linepos;
|
|
if (in_word)
|
|
words++;
|
|
print_counts(lines, words, chars, length, name);
|
|
total_lines += lines;
|
|
total_words += words;
|
|
total_chars += chars;
|
|
if (length > max_length)
|
|
max_length = length;
|
|
fclose(file);
|
|
fflush(stdout);
|
|
}
|
|
|
|
int wc_main(int argc, char **argv)
|
|
{
|
|
FILE *file;
|
|
unsigned int num_files_counted = 0;
|
|
int opt;
|
|
|
|
total_lines = total_words = total_chars = max_length = 0;
|
|
print_lines = print_words = print_chars = print_length = 0;
|
|
|
|
while ((opt = getopt(argc, argv, "clLw")) > 0) {
|
|
switch (opt) {
|
|
case 'c':
|
|
print_chars = 1;
|
|
break;
|
|
case 'l':
|
|
print_lines = 1;
|
|
break;
|
|
case 'L':
|
|
print_length = 1;
|
|
break;
|
|
case 'w':
|
|
print_words = 1;
|
|
break;
|
|
default:
|
|
usage(wc_usage);
|
|
}
|
|
}
|
|
|
|
if (!print_lines && !print_words && !print_chars && !print_length)
|
|
print_lines = print_words = print_chars = 1;
|
|
|
|
if (argv[optind] == NULL || strcmp(argv[optind], "-") == 0) {
|
|
wc_file(stdin, "");
|
|
exit(TRUE);
|
|
} else {
|
|
while (optind < argc) {
|
|
file = fopen(argv[optind], "r");
|
|
if (file == NULL) {
|
|
fatalError(argv[optind]);
|
|
}
|
|
wc_file(file, argv[optind]);
|
|
num_files_counted++;
|
|
optind++;
|
|
}
|
|
}
|
|
|
|
if (num_files_counted > 1)
|
|
print_counts(total_lines, total_words, total_chars,
|
|
max_length, "total");
|
|
|
|
return 0 ;
|
|
}
|