1 /* 2 * Copyright (c) 1980, 1987, 1991, 1993 3 * The Regents of the University of California. 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 * @(#) Copyright (c) 1980, 1987, 1991, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)wc.c 8.1 (Berkeley) 6/6/93 35 * $FreeBSD: src/usr.bin/wc/wc.c,v 1.11.2.1 2002/08/25 02:47:04 tjr Exp $ 36 * $DragonFly: src/usr.bin/wc/wc.c,v 1.5 2005/02/05 16:07:08 liamfoy Exp $ 37 */ 38 39 #include <sys/param.h> 40 #include <sys/stat.h> 41 42 #include <ctype.h> 43 #include <err.h> 44 #include <errno.h> 45 #include <fcntl.h> 46 #include <locale.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 #include <unistd.h> 51 52 uintmax_t tlinect, twordct, tcharct; 53 int doline, doword, dochar, domulti; 54 55 static int cnt(const char *); 56 static void usage(void); 57 58 int 59 main(int argc, char **argv) 60 { 61 int ch, errors, total; 62 63 setlocale(LC_CTYPE, ""); 64 65 while ((ch = getopt(argc, argv, "clmw")) != -1) { 66 switch (ch) { 67 case 'l': 68 doline = 1; 69 break; 70 case 'w': 71 doword = 1; 72 break; 73 case 'c': 74 dochar = 1; 75 domulti = 0; 76 break; 77 case 'm': 78 domulti = 1; 79 dochar = 0; 80 break; 81 case '?': 82 default: 83 usage(); 84 } 85 } 86 argv += optind; 87 argc -= optind; 88 89 /* Wc's flags are on by default. */ 90 if (doline + doword + dochar + domulti == 0) 91 doline = doword = dochar = 1; 92 93 errors = 0; 94 total = 0; 95 if (*argv == NULL) { 96 if (cnt(NULL) != 0) 97 ++errors; 98 else 99 printf("\n"); 100 } 101 else do { 102 if (cnt(*argv) != 0) 103 ++errors; 104 else 105 printf(" %s\n", *argv); 106 ++total; 107 } while(*++argv); 108 109 if (total > 1) { 110 if (doline) 111 printf(" %7ju", tlinect); 112 if (doword) 113 printf(" %7ju", twordct); 114 if (dochar || domulti) 115 printf(" %7ju", tcharct); 116 printf(" total\n"); 117 } 118 exit(errors == 0 ? 0 : 1); 119 } 120 121 static int 122 cnt(const char *file) 123 { 124 struct stat sb; 125 u_quad_t linect, wordct, charct; 126 ssize_t nread; 127 int clen, fd, len, warned; 128 short gotsp; 129 u_char *p; 130 u_char buf[MAXBSIZE]; 131 wchar_t wch; 132 133 linect = wordct = charct = 0; 134 if (file == NULL) { 135 file = "stdin"; 136 fd = STDIN_FILENO; 137 } else { 138 if ((fd = open(file, O_RDONLY)) < 0) { 139 warn("%s: open", file); 140 return (1); 141 } 142 if (doword || (domulti && MB_CUR_MAX != 1)) 143 goto word; 144 /* 145 * Line counting is split out because it's a lot faster to get 146 * lines than to get words, since the word count requires some 147 * logic. 148 */ 149 if (doline) { 150 while ((len = read(fd, buf, MAXBSIZE))) { 151 if (len == -1) { 152 warn("%s: read", file); 153 close(fd); 154 return (1); 155 } 156 charct += len; 157 for (p = buf; len--; ++p) { 158 if (*p == '\n') 159 ++linect; 160 } 161 } 162 tlinect += linect; 163 printf(" %7ju", linect); 164 if (dochar) { 165 tcharct += charct; 166 printf(" %7ju", charct); 167 } 168 close(fd); 169 return (0); 170 } 171 /* 172 * If all we need is the number of characters and it's a 173 * regular file, just stat the puppy. 174 */ 175 if (dochar || domulti) { 176 if (fstat(fd, &sb)) { 177 warn("%s: fstat", file); 178 close(fd); 179 return (1); 180 } 181 if (S_ISREG(sb.st_mode)) { 182 printf(" %7lld", (long long)sb.st_size); 183 tcharct += sb.st_size; 184 close(fd); 185 return (0); 186 } 187 } 188 } 189 190 /* Do it the hard way... */ 191 word: gotsp = 1; 192 len = 0; 193 warned = 0; 194 while ((nread = read(fd, buf + len, MAXBSIZE - len)) != 0) { 195 if (nread == -1) { 196 warn("%s: read", file); 197 close(fd); 198 return (1); 199 } 200 len += nread; 201 p = buf; 202 while (len > 0) { 203 if (!domulti || MB_CUR_MAX == 1) { 204 clen = 1; 205 wch = (unsigned char)*p; 206 } else if ((clen = mbtowc(&wch, p, len)) <= 0) { 207 if (len > MB_CUR_MAX) { 208 clen = 1; 209 wch = (unsigned char)*p; 210 if (!warned) { 211 errno = EILSEQ; 212 warn("%s", file); 213 warned = 1; 214 } 215 } else { 216 memmove(buf, p, len); 217 break; 218 } 219 } 220 charct++; 221 len -= clen; 222 p += clen; 223 if (wch == L'\n') 224 ++linect; 225 if (isspace(wch)) 226 gotsp = 1; 227 else if (gotsp) { 228 gotsp = 0; 229 ++wordct; 230 } 231 } 232 } 233 if (doline) { 234 tlinect += linect; 235 printf(" %7ju", linect); 236 } 237 if (doword) { 238 twordct += wordct; 239 printf(" %7ju", wordct); 240 } 241 if (dochar || domulti) { 242 tcharct += charct; 243 printf(" %7ju", charct); 244 } 245 close(fd); 246 return (0); 247 } 248 249 static void 250 usage(void) 251 { 252 fprintf(stderr, "usage: wc [-clmw] [file ...]\n"); 253 exit(1); 254 } 255