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1.2 ! deraadt 1: /* $OpenBSD$ */
! 2:
1.1 deraadt 3: /*
4: * Copyright (c) 1980, 1987 Regents of the University of California.
5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by the University of
18: * California, Berkeley and its contributors.
19: * 4. Neither the name of the University nor the names of its contributors
20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
35:
36: #ifndef lint
37: char copyright[] =
38: "@(#) Copyright (c) 1980, 1987 Regents of the University of California.\n\
39: All rights reserved.\n";
40: #endif /* not lint */
41:
42: #ifndef lint
43: /*static char sccsid[] = "from: @(#)wc.c 5.7 (Berkeley) 3/2/91";*/
1.2 ! deraadt 44: static char rcsid[] = "$OpenBSD: wc.c,v 1.1.1.1 1995/10/18 08:46:51 deraadt Exp $";
1.1 deraadt 45: #endif /* not lint */
46:
47: /* wc line, word and char count */
48:
49: #include <stdio.h>
50: #include <stdlib.h>
51: #include <string.h>
52: #include <locale.h>
53: #include <ctype.h>
54: #include <errno.h>
55: #include <sys/param.h>
56: #include <sys/stat.h>
57: #include <sys/file.h>
58: #include <unistd.h>
59: #include <err.h>
60:
61: static void print_counts();
62: static void cnt();
63: static long tlinect, twordct, tcharct;
64: static int doline, doword, dochar;
65: static int rval = 0;
66:
67: int
68: main(argc, argv)
69: int argc;
70: char **argv;
71: {
72: extern int optind;
73: register int ch;
74:
75: setlocale(LC_ALL, "");
76:
77: while ((ch = getopt(argc, argv, "lwcm")) != -1)
78: switch((char)ch) {
79: case 'l':
80: doline = 1;
81: break;
82: case 'w':
83: doword = 1;
84: break;
85: case 'c':
86: case 'm':
87: dochar = 1;
88: break;
89: case '?':
90: default:
91: fprintf(stderr, "usage: wc [-c | -m] [-lw] [file ...]\n");
92: exit(1);
93: }
94: argv += optind;
95: argc -= optind;
96:
97: /*
98: * wc is unusual in that its flags are on by default, so,
99: * if you don't get any arguments, you have to turn them
100: * all on.
101: */
102: if (!doline && !doword && !dochar) {
103: doline = doword = dochar = 1;
104: }
105:
106: if (!*argv) {
107: cnt((char *)NULL);
108: } else {
109: int dototal = (argc > 1);
110:
111: do {
112: cnt(*argv);
113: } while(*++argv);
114:
115: if (dototal) {
116: print_counts (tlinect, twordct, tcharct, "total");
117: }
118: }
119:
120: exit(rval);
121: }
122:
123:
124: static void
125: cnt(file)
126: char *file;
127: {
128: register u_char *C;
129: register short gotsp;
130: register int len;
131: register long linect, wordct, charct;
132: struct stat sbuf;
133: int fd;
134: u_char buf[MAXBSIZE];
135:
136: linect = wordct = charct = 0;
137: if (file) {
138: if ((fd = open(file, O_RDONLY, 0)) < 0) {
139: warn ("%s", file);
140: rval = 1;
141: return;
142: }
143: } else {
144: fd = STDIN_FILENO;
145: }
146:
147: if (!doword) {
148: /*
149: * line counting is split out because it's a lot
150: * faster to get lines than to get words, since
151: * the word count requires some logic.
152: */
153: if (doline) {
154: while((len = read(fd, buf, MAXBSIZE)) > 0) {
155: charct += len;
156: for (C = buf; len--; ++C)
157: if (*C == '\n')
158: ++linect;
159: }
160: if (len == -1) {
161: warn ("%s", file);
162: rval = 1;
163: }
164: }
165:
166: /*
167: * if all we need is the number of characters and
168: * it's a directory or a regular or linked file, just
169: * stat the puppy. We avoid testing for it not being
170: * a special device in case someone adds a new type
171: * of inode.
172: */
173: else if (dochar) {
174: int ifmt;
175:
176: if (fstat(fd, &sbuf)) {
177: warn ("%s", file);
178: rval = 1;
179: } else {
180: ifmt = sbuf.st_mode & S_IFMT;
181: if (ifmt == S_IFREG || ifmt == S_IFLNK
182: || ifmt == S_IFDIR) {
183: charct = sbuf.st_size;
184: } else {
185: while((len = read(fd, buf, MAXBSIZE)) > 0)
186: charct += len;
187: if (len == -1) {
188: warn ("%s", file);
189: rval = 1;
190: }
191: }
192: }
193: }
194: }
195: else
196: {
197: /* do it the hard way... */
198: gotsp = 1;
199: while ((len = read(fd, buf, MAXBSIZE)) > 0) {
200: charct += len;
201: for (C = buf; len--; ++C) {
202: if (isspace (*C)) {
203: gotsp = 1;
204: if (*C == '\n') {
205: ++linect;
206: }
207: } else {
208: /*
209: * This line implements the POSIX
210: * spec, i.e. a word is a "maximal
211: * string of characters delimited by
212: * whitespace." Notice nothing was
213: * said about a character being
214: * printing or non-printing.
215: */
216: if (gotsp) {
217: gotsp = 0;
218: ++wordct;
219: }
220: }
221: }
222: }
223: if (len == -1) {
224: warn ("%s", file);
225: rval = 1;
226: }
227: }
228:
229: print_counts (linect, wordct, charct, file ? file : "");
230:
231: /* don't bother checkint doline, doword, or dochar --- speeds
232: up the common case */
233: tlinect += linect;
234: twordct += wordct;
235: tcharct += charct;
236:
237: if (close(fd)) {
238: warn ("%s", file);
239: rval = 1;
240: }
241: }
242:
243:
244: void
245: print_counts (lines, words, chars, name)
246: long lines;
247: long words;
248: long chars;
249: char *name;
250: {
251:
252: if (doline)
253: printf(" %7ld", lines);
254: if (doword)
255: printf(" %7ld", words);
256: if (dochar)
257: printf(" %7ld", chars);
258:
259: printf (" %s\n", name);
260: }