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 1.2 2003/06/17 04:29:33 dillon 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 u_quad_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(argc, argv) 60 int argc; 61 char *argv[]; 62 { 63 int ch, errors, total; 64 65 (void) setlocale(LC_CTYPE, ""); 66 67 while ((ch = getopt(argc, argv, "clmw")) != -1) 68 switch((char)ch) { 69 case 'l': 70 doline = 1; 71 break; 72 case 'w': 73 doword = 1; 74 break; 75 case 'c': 76 dochar = 1; 77 domulti = 0; 78 break; 79 case 'm': 80 domulti = 1; 81 dochar = 0; 82 break; 83 case '?': 84 default: 85 usage(); 86 } 87 argv += optind; 88 argc -= optind; 89 90 /* Wc's flags are on by default. */ 91 if (doline + doword + dochar + domulti == 0) 92 doline = doword = dochar = 1; 93 94 errors = 0; 95 total = 0; 96 if (!*argv) { 97 if (cnt((char *)NULL) != 0) 98 ++errors; 99 else 100 (void)printf("\n"); 101 } 102 else do { 103 if (cnt(*argv) != 0) 104 ++errors; 105 else 106 (void)printf(" %s\n", *argv); 107 ++total; 108 } while(*++argv); 109 110 if (total > 1) { 111 if (doline) 112 (void)printf(" %7qu", tlinect); 113 if (doword) 114 (void)printf(" %7qu", twordct); 115 if (dochar || domulti) 116 (void)printf(" %7qu", tcharct); 117 (void)printf(" total\n"); 118 } 119 exit(errors == 0 ? 0 : 1); 120 } 121 122 static int 123 cnt(file) 124 const char *file; 125 { 126 struct stat sb; 127 u_quad_t linect, wordct, charct; 128 ssize_t nread; 129 int clen, fd, len, warned; 130 short gotsp; 131 u_char *p; 132 u_char buf[MAXBSIZE]; 133 wchar_t wch; 134 135 linect = wordct = charct = 0; 136 if (file == NULL) { 137 file = "stdin"; 138 fd = STDIN_FILENO; 139 } else { 140 if ((fd = open(file, O_RDONLY, 0)) < 0) { 141 warn("%s: open", file); 142 return (1); 143 } 144 if (doword || (domulti && MB_CUR_MAX != 1)) 145 goto word; 146 /* 147 * Line counting is split out because it's a lot faster to get 148 * lines than to get words, since the word count requires some 149 * logic. 150 */ 151 if (doline) { 152 while ((len = read(fd, buf, MAXBSIZE))) { 153 if (len == -1) { 154 warn("%s: read", file); 155 (void)close(fd); 156 return (1); 157 } 158 charct += len; 159 for (p = buf; len--; ++p) 160 if (*p == '\n') 161 ++linect; 162 } 163 tlinect += linect; 164 (void)printf(" %7qu", linect); 165 if (dochar) { 166 tcharct += charct; 167 (void)printf(" %7qu", charct); 168 } 169 (void)close(fd); 170 return (0); 171 } 172 /* 173 * If all we need is the number of characters and it's a 174 * regular file, just stat the puppy. 175 */ 176 if (dochar || domulti) { 177 if (fstat(fd, &sb)) { 178 warn("%s: fstat", file); 179 (void)close(fd); 180 return (1); 181 } 182 if (S_ISREG(sb.st_mode)) { 183 (void)printf(" %7lld", (long long)sb.st_size); 184 tcharct += sb.st_size; 185 (void)close(fd); 186 return (0); 187 } 188 } 189 } 190 191 /* Do it the hard way... */ 192 word: gotsp = 1; 193 len = 0; 194 warned = 0; 195 while ((nread = read(fd, buf + len, MAXBSIZE - len)) != 0) { 196 if (nread == -1) { 197 warn("%s: read", file); 198 (void)close(fd); 199 return (1); 200 } 201 len += nread; 202 p = buf; 203 while (len > 0) { 204 if (!domulti || MB_CUR_MAX == 1) { 205 clen = 1; 206 wch = (unsigned char)*p; 207 } else if ((clen = mbtowc(&wch, p, len)) <= 0) { 208 if (len > MB_CUR_MAX) { 209 clen = 1; 210 wch = (unsigned char)*p; 211 if (!warned) { 212 errno = EILSEQ; 213 warn("%s", file); 214 warned = 1; 215 } 216 } else { 217 memmove(buf, p, len); 218 break; 219 } 220 } 221 charct++; 222 len -= clen; 223 p += clen; 224 if (wch == L'\n') 225 ++linect; 226 if (isspace(wch)) 227 gotsp = 1; 228 else if (gotsp) { 229 gotsp = 0; 230 ++wordct; 231 } 232 } 233 } 234 if (doline) { 235 tlinect += linect; 236 (void)printf(" %7qu", linect); 237 } 238 if (doword) { 239 twordct += wordct; 240 (void)printf(" %7qu", wordct); 241 } 242 if (dochar || domulti) { 243 tcharct += charct; 244 (void)printf(" %7qu", charct); 245 } 246 (void)close(fd); 247 return (0); 248 } 249 250 static void 251 usage() 252 { 253 (void)fprintf(stderr, "usage: wc [-clmw] [file ...]\n"); 254 exit(1); 255 } 256