349 lines
7.5 KiB
C
349 lines
7.5 KiB
C
/* $NetBSD: wc.c,v 1.21 2001/10/19 06:09:56 yamt Exp $ */
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/*
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* Copyright (c) 1980, 1987, 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1980, 1987, 1991, 1993\n\
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The Regents of the University of California. All rights reserved.\n");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)wc.c 8.2 (Berkeley) 5/2/95";
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#else
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__RCSID("$NetBSD: wc.c,v 1.21 2001/10/19 06:09:56 yamt Exp $");
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#endif
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#endif /* not lint */
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/* wc line, word and char count */
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <locale.h>
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#include <ctype.h>
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#include <errno.h>
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/file.h>
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#include <unistd.h>
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#include <err.h>
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#include <wchar.h>
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#include <wctype.h>
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#ifdef NO_QUAD
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typedef u_long wc_count_t;
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# define WCFMT " %7lu"
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# define WCCAST unsigned long
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#else
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typedef u_quad_t wc_count_t;
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# define WCFMT " %7llu"
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# define WCCAST unsigned long long
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#endif
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static wc_count_t tlinect, twordct, tcharct;
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static int doline, doword, dobyte, dochar;
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static int rval = 0;
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static void cnt __P((char *));
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static void print_counts __P((wc_count_t, wc_count_t, wc_count_t, char *));
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static void usage __P((void));
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static size_t do_mb __P((wchar_t *, const char *, size_t, mbstate_t *,
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size_t *, const char *));
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int main __P((int, char *[]));
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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int ch;
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setlocale(LC_ALL, "");
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while ((ch = getopt(argc, argv, "lwcm")) != -1)
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switch((char)ch) {
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case 'l':
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doline = 1;
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break;
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case 'w':
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doword = 1;
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break;
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case 'm':
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dochar = 1;
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dobyte = 0;
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break;
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case 'c':
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dochar = 0;
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dobyte = 1;
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break;
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case '?':
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default:
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usage();
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}
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argv += optind;
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argc -= optind;
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/* Wc's flags are on by default. */
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if (doline + doword + dobyte + dochar == 0)
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doline = doword = dobyte = 1;
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if (!*argv) {
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cnt(NULL);
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} else {
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int dototal = (argc > 1);
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do {
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cnt(*argv);
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} while(*++argv);
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if (dototal)
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print_counts(tlinect, twordct, tcharct, "total");
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}
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exit(rval);
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}
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static size_t
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do_mb(wc, p, mblen, st, cnt, file)
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wchar_t *wc;
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const char *p;
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size_t mblen;
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mbstate_t *st;
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size_t *cnt;
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const char *file;
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{
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size_t r;
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size_t c = 0;
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do {
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r = mbrtowc(wc, p, mblen, st);
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if (r == (size_t)-1) {
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warnx("%s: invalid byte sequence", file);
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rval = 1;
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/* XXX skip 1 byte */
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mblen --;
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p ++;
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memset(st, 0, sizeof(*st));
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}
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else if (r == (size_t)-2)
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break;
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else if (r == 0)
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r = 1;
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c ++;
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if (wc)
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wc ++;
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mblen -= r;
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p += r;
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} while (mblen > 0);
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*cnt = c;
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return r;
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}
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static void
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cnt(file)
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char *file;
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{
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u_char *C;
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wchar_t *WC;
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short gotsp;
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int len = 0;
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wc_count_t linect, wordct, charct;
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struct stat sb;
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int fd;
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u_char buf[MAXBSIZE];
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wchar_t wbuf[MAXBSIZE];
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size_t r = 0;
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mbstate_t st;
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linect = wordct = charct = 0;
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if (file) {
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if ((fd = open(file, O_RDONLY, 0)) < 0) {
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warn("%s", file);
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rval = 1;
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return;
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}
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} else {
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fd = STDIN_FILENO;
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}
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if (dochar || doword)
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memset(&st, 0, sizeof(st));
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if (!doword) {
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/*
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* line counting is split out because it's a lot
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* faster to get lines than to get words, since
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* the word count requires some logic.
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*/
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if (doline || dochar) {
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while ((len = read(fd, buf, MAXBSIZE)) > 0) {
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if (dochar) {
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size_t wlen;
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r = do_mb(0, (char *)buf, (size_t)len, &st, &wlen, file);
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charct += wlen;
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}
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else if (dobyte)
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charct += len;
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if (doline)
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for (C = buf; len--; ++C)
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if (*C == '\n')
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++linect;
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}
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}
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/*
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* if all we need is the number of characters and
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* it's a directory or a regular or linked file, just
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* stat the puppy. We avoid testing for it not being
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* a special device in case someone adds a new type
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* of inode.
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*/
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else if (dobyte) {
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if (fstat(fd, &sb)) {
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warn("%s", file);
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rval = 1;
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} else {
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if (S_ISREG(sb.st_mode) ||
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S_ISLNK(sb.st_mode) ||
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S_ISDIR(sb.st_mode)) {
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charct = sb.st_size;
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} else {
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while ((len = read(fd, buf, MAXBSIZE)) > 0)
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charct += len;
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}
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}
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}
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}
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else
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{
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/* do it the hard way... */
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gotsp = 1;
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while ((len = read(fd, buf, MAXBSIZE)) > 0) {
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size_t wlen;
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r = do_mb(wbuf, (char *)buf, (size_t)len, &st, &wlen, file);
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if (dochar) {
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charct += wlen;
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}
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else if (dobyte)
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charct += len;
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for (WC = wbuf; wlen--; ++WC) {
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if (iswspace(*WC)) {
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gotsp = 1;
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if (*WC == L'\n') {
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++linect;
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}
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} else {
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/*
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* This line implements the POSIX
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* spec, i.e. a word is a "maximal
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* string of characters delimited by
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* whitespace." Notice nothing was
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* said about a character being
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* printing or non-printing.
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*/
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if (gotsp) {
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gotsp = 0;
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++wordct;
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}
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}
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}
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}
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}
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if (len == -1) {
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warn ("%s", file);
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rval = 1;
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}
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if (dochar && r == (size_t)-2) {
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warnx ("%s: incomplete multibyte character", file);
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rval = 1;
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}
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print_counts(linect, wordct, charct, file ? file : 0);
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/* don't bother checkint doline, doword, or dobyte --- speeds
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up the common case */
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tlinect += linect;
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twordct += wordct;
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tcharct += charct;
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if (close(fd)) {
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warn ("%s", file);
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rval = 1;
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}
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}
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static void
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print_counts(lines, words, chars, name)
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wc_count_t lines;
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wc_count_t words;
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wc_count_t chars;
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char *name;
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{
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if (doline)
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printf(WCFMT, (WCCAST)lines);
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if (doword)
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printf(WCFMT, (WCCAST)words);
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if (dobyte || dochar)
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printf(WCFMT, (WCCAST)chars);
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if (name)
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printf(" %s\n", name);
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else
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printf("\n");
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}
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static void
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usage()
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{
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(void)fprintf(stderr, "usage: wc [-clw] [file ...]\n");
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exit(1);
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}
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