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 34 #include <sys/cdefs.h> 35 36 __FBSDID("$FreeBSD$"); 37 38 #ifndef lint 39 static const char copyright[] = 40 "@(#) Copyright (c) 1980, 1987, 1991, 1993\n\ 41 The Regents of the University of California. All rights reserved.\n"; 42 #endif 43 44 #ifndef lint 45 static const char sccsid[] = "@(#)wc.c 8.1 (Berkeley) 6/6/93"; 46 #endif 47 48 #include <sys/param.h> 49 #include <sys/stat.h> 50 51 #include <ctype.h> 52 #include <err.h> 53 #include <fcntl.h> 54 #include <locale.h> 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <string.h> 58 #include <unistd.h> 59 60 u_quad_t tlinect, twordct, tcharct; 61 int doline, doword, dochar; 62 63 int cnt __P((const char *)); 64 void usage __P((void)); 65 66 int 67 main(argc, argv) 68 int argc; 69 char *argv[]; 70 { 71 int ch, errors, total; 72 73 (void) setlocale(LC_CTYPE, ""); 74 75 while ((ch = getopt(argc, argv, "lwc")) != -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 dochar = 1; 85 break; 86 case '?': 87 default: 88 usage(); 89 } 90 argv += optind; 91 argc -= optind; 92 93 /* Wc's flags are on by default. */ 94 if (doline + doword + dochar == 0) 95 doline = doword = dochar = 1; 96 97 errors = 0; 98 total = 0; 99 if (!*argv) { 100 if (cnt((char *)NULL) != 0) 101 ++errors; 102 else 103 (void)printf("\n"); 104 } 105 else do { 106 if (cnt(*argv) != 0) 107 ++errors; 108 else 109 (void)printf(" %s\n", *argv); 110 ++total; 111 } while(*++argv); 112 113 if (total > 1) { 114 if (doline) 115 (void)printf(" %7qu", tlinect); 116 if (doword) 117 (void)printf(" %7qu", twordct); 118 if (dochar) 119 (void)printf(" %7qu", tcharct); 120 (void)printf(" total\n"); 121 } 122 exit(errors == 0 ? 0 : 1); 123 } 124 125 int 126 cnt(file) 127 const char *file; 128 { 129 struct stat sb; 130 u_quad_t linect, wordct, charct; 131 int fd, len; 132 short gotsp; 133 u_char *p; 134 u_char buf[MAXBSIZE], ch; 135 136 linect = wordct = charct = 0; 137 if (file == NULL) { 138 file = "stdin"; 139 fd = STDIN_FILENO; 140 } else { 141 if ((fd = open(file, O_RDONLY, 0)) < 0) { 142 warn("%s: open", file); 143 return (1); 144 } 145 if (doword) 146 goto word; 147 /* 148 * Line counting is split out because it's a lot faster to get 149 * lines than to get words, since the word count requires some 150 * logic. 151 */ 152 if (doline) { 153 while ((len = read(fd, buf, MAXBSIZE))) { 154 if (len == -1) { 155 warn("%s: read", file); 156 (void)close(fd); 157 return (1); 158 } 159 charct += len; 160 for (p = buf; len--; ++p) 161 if (*p == '\n') 162 ++linect; 163 } 164 tlinect += linect; 165 (void)printf(" %7qu", linect); 166 if (dochar) { 167 tcharct += charct; 168 (void)printf(" %7qu", charct); 169 } 170 (void)close(fd); 171 return (0); 172 } 173 /* 174 * If all we need is the number of characters and it's a 175 * regular or linked file, just stat the puppy. 176 */ 177 if (dochar) { 178 if (fstat(fd, &sb)) { 179 warn("%s: fstat", file); 180 (void)close(fd); 181 return (1); 182 } 183 if (S_ISREG(sb.st_mode) || S_ISLNK(sb.st_mode)) { 184 (void)printf(" %7lld", (long long)sb.st_size); 185 tcharct += sb.st_size; 186 (void)close(fd); 187 return (0); 188 } 189 } 190 } 191 192 /* Do it the hard way... */ 193 word: for (gotsp = 1; (len = read(fd, buf, MAXBSIZE));) { 194 if (len == -1) { 195 warn("%s: read", file); 196 (void)close(fd); 197 return (1); 198 } 199 /* 200 * This loses in the presence of multi-byte characters. 201 * To do it right would require a function to return a 202 * character while knowing how many bytes it consumed. 203 */ 204 charct += len; 205 for (p = buf; len--;) { 206 ch = *p++; 207 if (ch == '\n') 208 ++linect; 209 if (isspace(ch)) 210 gotsp = 1; 211 else if (gotsp) { 212 gotsp = 0; 213 ++wordct; 214 } 215 } 216 } 217 if (doline) { 218 tlinect += linect; 219 (void)printf(" %7qu", linect); 220 } 221 if (doword) { 222 twordct += wordct; 223 (void)printf(" %7qu", wordct); 224 } 225 if (dochar) { 226 tcharct += charct; 227 (void)printf(" %7qu", charct); 228 } 229 (void)close(fd); 230 return (0); 231 } 232 233 void 234 usage() 235 { 236 (void)fprintf(stderr, "usage: wc [-clw] [file ...]\n"); 237 exit(1); 238 } 239