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 1.3 2003/10/04 20:36:55 hmp 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(int argc, char **argv) 60 { 61 int ch, errors, total; 62 63 (void) setlocale(LC_CTYPE, ""); 64 65 while ((ch = getopt(argc, argv, "clmw")) != -1) 66 switch((char)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 argv += optind; 86 argc -= optind; 87 88 /* Wc's flags are on by default. */ 89 if (doline + doword + dochar + domulti == 0) 90 doline = doword = dochar = 1; 91 92 errors = 0; 93 total = 0; 94 if (!*argv) { 95 if (cnt((char *)NULL) != 0) 96 ++errors; 97 else 98 (void)printf("\n"); 99 } 100 else do { 101 if (cnt(*argv) != 0) 102 ++errors; 103 else 104 (void)printf(" %s\n", *argv); 105 ++total; 106 } while(*++argv); 107 108 if (total > 1) { 109 if (doline) 110 (void)printf(" %7qu", tlinect); 111 if (doword) 112 (void)printf(" %7qu", twordct); 113 if (dochar || domulti) 114 (void)printf(" %7qu", tcharct); 115 (void)printf(" total\n"); 116 } 117 exit(errors == 0 ? 0 : 1); 118 } 119 120 static int 121 cnt(const char *file) 122 { 123 struct stat sb; 124 u_quad_t linect, wordct, charct; 125 ssize_t nread; 126 int clen, fd, len, warned; 127 short gotsp; 128 u_char *p; 129 u_char buf[MAXBSIZE]; 130 wchar_t wch; 131 132 linect = wordct = charct = 0; 133 if (file == NULL) { 134 file = "stdin"; 135 fd = STDIN_FILENO; 136 } else { 137 if ((fd = open(file, O_RDONLY, 0)) < 0) { 138 warn("%s: open", file); 139 return (1); 140 } 141 if (doword || (domulti && MB_CUR_MAX != 1)) 142 goto word; 143 /* 144 * Line counting is split out because it's a lot faster to get 145 * lines than to get words, since the word count requires some 146 * logic. 147 */ 148 if (doline) { 149 while ((len = read(fd, buf, MAXBSIZE))) { 150 if (len == -1) { 151 warn("%s: read", file); 152 (void)close(fd); 153 return (1); 154 } 155 charct += len; 156 for (p = buf; len--; ++p) 157 if (*p == '\n') 158 ++linect; 159 } 160 tlinect += linect; 161 (void)printf(" %7qu", linect); 162 if (dochar) { 163 tcharct += charct; 164 (void)printf(" %7qu", charct); 165 } 166 (void)close(fd); 167 return (0); 168 } 169 /* 170 * If all we need is the number of characters and it's a 171 * regular file, just stat the puppy. 172 */ 173 if (dochar || domulti) { 174 if (fstat(fd, &sb)) { 175 warn("%s: fstat", file); 176 (void)close(fd); 177 return (1); 178 } 179 if (S_ISREG(sb.st_mode)) { 180 (void)printf(" %7lld", (long long)sb.st_size); 181 tcharct += sb.st_size; 182 (void)close(fd); 183 return (0); 184 } 185 } 186 } 187 188 /* Do it the hard way... */ 189 word: gotsp = 1; 190 len = 0; 191 warned = 0; 192 while ((nread = read(fd, buf + len, MAXBSIZE - len)) != 0) { 193 if (nread == -1) { 194 warn("%s: read", file); 195 (void)close(fd); 196 return (1); 197 } 198 len += nread; 199 p = buf; 200 while (len > 0) { 201 if (!domulti || MB_CUR_MAX == 1) { 202 clen = 1; 203 wch = (unsigned char)*p; 204 } else if ((clen = mbtowc(&wch, p, len)) <= 0) { 205 if (len > MB_CUR_MAX) { 206 clen = 1; 207 wch = (unsigned char)*p; 208 if (!warned) { 209 errno = EILSEQ; 210 warn("%s", file); 211 warned = 1; 212 } 213 } else { 214 memmove(buf, p, len); 215 break; 216 } 217 } 218 charct++; 219 len -= clen; 220 p += clen; 221 if (wch == L'\n') 222 ++linect; 223 if (isspace(wch)) 224 gotsp = 1; 225 else if (gotsp) { 226 gotsp = 0; 227 ++wordct; 228 } 229 } 230 } 231 if (doline) { 232 tlinect += linect; 233 (void)printf(" %7qu", linect); 234 } 235 if (doword) { 236 twordct += wordct; 237 (void)printf(" %7qu", wordct); 238 } 239 if (dochar || domulti) { 240 tcharct += charct; 241 (void)printf(" %7qu", charct); 242 } 243 (void)close(fd); 244 return (0); 245 } 246 247 static void 248 usage(void) 249 { 250 (void)fprintf(stderr, "usage: wc [-clmw] [file ...]\n"); 251 exit(1); 252 } 253