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1.1 ! deraadt 1: /*
! 2: * Copyright (c) 1980, 1987 Regents of the University of California.
! 3: * All rights reserved.
! 4: *
! 5: * Redistribution and use in source and binary forms, with or without
! 6: * modification, are permitted provided that the following conditions
! 7: * are met:
! 8: * 1. Redistributions of source code must retain the above copyright
! 9: * notice, this list of conditions and the following disclaimer.
! 10: * 2. Redistributions in binary form must reproduce the above copyright
! 11: * notice, this list of conditions and the following disclaimer in the
! 12: * documentation and/or other materials provided with the distribution.
! 13: * 3. All advertising materials mentioning features or use of this software
! 14: * must display the following acknowledgement:
! 15: * This product includes software developed by the University of
! 16: * California, Berkeley and its contributors.
! 17: * 4. Neither the name of the University nor the names of its contributors
! 18: * may be used to endorse or promote products derived from this software
! 19: * without specific prior written permission.
! 20: *
! 21: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 24: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 31: * SUCH DAMAGE.
! 32: */
! 33:
! 34: #ifndef lint
! 35: char copyright[] =
! 36: "@(#) Copyright (c) 1980, 1987 Regents of the University of California.\n\
! 37: All rights reserved.\n";
! 38: #endif /* not lint */
! 39:
! 40: #ifndef lint
! 41: /*static char sccsid[] = "from: @(#)wc.c 5.7 (Berkeley) 3/2/91";*/
! 42: static char rcsid[] = "$Id: wc.c,v 1.9 1994/01/03 03:11:06 andrew Exp $";
! 43: #endif /* not lint */
! 44:
! 45: /* wc line, word and char count */
! 46:
! 47: #include <stdio.h>
! 48: #include <stdlib.h>
! 49: #include <string.h>
! 50: #include <locale.h>
! 51: #include <ctype.h>
! 52: #include <errno.h>
! 53: #include <sys/param.h>
! 54: #include <sys/stat.h>
! 55: #include <sys/file.h>
! 56: #include <unistd.h>
! 57: #include <err.h>
! 58:
! 59: static void print_counts();
! 60: static void cnt();
! 61: static long tlinect, twordct, tcharct;
! 62: static int doline, doword, dochar;
! 63: static int rval = 0;
! 64:
! 65: int
! 66: main(argc, argv)
! 67: int argc;
! 68: char **argv;
! 69: {
! 70: extern int optind;
! 71: register int ch;
! 72:
! 73: setlocale(LC_ALL, "");
! 74:
! 75: while ((ch = getopt(argc, argv, "lwcm")) != -1)
! 76: switch((char)ch) {
! 77: case 'l':
! 78: doline = 1;
! 79: break;
! 80: case 'w':
! 81: doword = 1;
! 82: break;
! 83: case 'c':
! 84: case 'm':
! 85: dochar = 1;
! 86: break;
! 87: case '?':
! 88: default:
! 89: fprintf(stderr, "usage: wc [-c | -m] [-lw] [file ...]\n");
! 90: exit(1);
! 91: }
! 92: argv += optind;
! 93: argc -= optind;
! 94:
! 95: /*
! 96: * wc is unusual in that its flags are on by default, so,
! 97: * if you don't get any arguments, you have to turn them
! 98: * all on.
! 99: */
! 100: if (!doline && !doword && !dochar) {
! 101: doline = doword = dochar = 1;
! 102: }
! 103:
! 104: if (!*argv) {
! 105: cnt((char *)NULL);
! 106: } else {
! 107: int dototal = (argc > 1);
! 108:
! 109: do {
! 110: cnt(*argv);
! 111: } while(*++argv);
! 112:
! 113: if (dototal) {
! 114: print_counts (tlinect, twordct, tcharct, "total");
! 115: }
! 116: }
! 117:
! 118: exit(rval);
! 119: }
! 120:
! 121:
! 122: static void
! 123: cnt(file)
! 124: char *file;
! 125: {
! 126: register u_char *C;
! 127: register short gotsp;
! 128: register int len;
! 129: register long linect, wordct, charct;
! 130: struct stat sbuf;
! 131: int fd;
! 132: u_char buf[MAXBSIZE];
! 133:
! 134: linect = wordct = charct = 0;
! 135: if (file) {
! 136: if ((fd = open(file, O_RDONLY, 0)) < 0) {
! 137: warn ("%s", file);
! 138: rval = 1;
! 139: return;
! 140: }
! 141: } else {
! 142: fd = STDIN_FILENO;
! 143: }
! 144:
! 145: if (!doword) {
! 146: /*
! 147: * line counting is split out because it's a lot
! 148: * faster to get lines than to get words, since
! 149: * the word count requires some logic.
! 150: */
! 151: if (doline) {
! 152: while((len = read(fd, buf, MAXBSIZE)) > 0) {
! 153: charct += len;
! 154: for (C = buf; len--; ++C)
! 155: if (*C == '\n')
! 156: ++linect;
! 157: }
! 158: if (len == -1) {
! 159: warn ("%s", file);
! 160: rval = 1;
! 161: }
! 162: }
! 163:
! 164: /*
! 165: * if all we need is the number of characters and
! 166: * it's a directory or a regular or linked file, just
! 167: * stat the puppy. We avoid testing for it not being
! 168: * a special device in case someone adds a new type
! 169: * of inode.
! 170: */
! 171: else if (dochar) {
! 172: int ifmt;
! 173:
! 174: if (fstat(fd, &sbuf)) {
! 175: warn ("%s", file);
! 176: rval = 1;
! 177: } else {
! 178: ifmt = sbuf.st_mode & S_IFMT;
! 179: if (ifmt == S_IFREG || ifmt == S_IFLNK
! 180: || ifmt == S_IFDIR) {
! 181: charct = sbuf.st_size;
! 182: } else {
! 183: while((len = read(fd, buf, MAXBSIZE)) > 0)
! 184: charct += len;
! 185: if (len == -1) {
! 186: warn ("%s", file);
! 187: rval = 1;
! 188: }
! 189: }
! 190: }
! 191: }
! 192: }
! 193: else
! 194: {
! 195: /* do it the hard way... */
! 196: gotsp = 1;
! 197: while ((len = read(fd, buf, MAXBSIZE)) > 0) {
! 198: charct += len;
! 199: for (C = buf; len--; ++C) {
! 200: if (isspace (*C)) {
! 201: gotsp = 1;
! 202: if (*C == '\n') {
! 203: ++linect;
! 204: }
! 205: } else {
! 206: /*
! 207: * This line implements the POSIX
! 208: * spec, i.e. a word is a "maximal
! 209: * string of characters delimited by
! 210: * whitespace." Notice nothing was
! 211: * said about a character being
! 212: * printing or non-printing.
! 213: */
! 214: if (gotsp) {
! 215: gotsp = 0;
! 216: ++wordct;
! 217: }
! 218: }
! 219: }
! 220: }
! 221: if (len == -1) {
! 222: warn ("%s", file);
! 223: rval = 1;
! 224: }
! 225: }
! 226:
! 227: print_counts (linect, wordct, charct, file ? file : "");
! 228:
! 229: /* don't bother checkint doline, doword, or dochar --- speeds
! 230: up the common case */
! 231: tlinect += linect;
! 232: twordct += wordct;
! 233: tcharct += charct;
! 234:
! 235: if (close(fd)) {
! 236: warn ("%s", file);
! 237: rval = 1;
! 238: }
! 239: }
! 240:
! 241:
! 242: void
! 243: print_counts (lines, words, chars, name)
! 244: long lines;
! 245: long words;
! 246: long chars;
! 247: char *name;
! 248: {
! 249:
! 250: if (doline)
! 251: printf(" %7ld", lines);
! 252: if (doword)
! 253: printf(" %7ld", words);
! 254: if (dochar)
! 255: printf(" %7ld", chars);
! 256:
! 257: printf (" %s\n", name);
! 258: }