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 #ifndef lint 35 static const char copyright[] = 36 "@(#) Copyright (c) 1980, 1987, 1991, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #if 0 41 #ifndef lint 42 static char sccsid[] = "@(#)wc.c 8.1 (Berkeley) 6/6/93"; 43 #endif /* not lint */ 44 #endif 45 46 #include <sys/cdefs.h> 47 __FBSDID("$FreeBSD$"); 48 49 #include <sys/param.h> 50 #include <sys/stat.h> 51 52 #include <ctype.h> 53 #include <err.h> 54 #include <fcntl.h> 55 #include <locale.h> 56 #include <stdint.h> 57 #include <stdio.h> 58 #include <stdlib.h> 59 #include <string.h> 60 #include <unistd.h> 61 62 uintmax_t tlinect, twordct, tcharct; 63 int doline, doword, dochar; 64 65 static int cnt(const char *); 66 static void usage(void); 67 68 int 69 main(argc, argv) 70 int argc; 71 char *argv[]; 72 { 73 int ch, errors, total; 74 75 (void) setlocale(LC_CTYPE, ""); 76 77 while ((ch = getopt(argc, argv, "lwc")) != -1) 78 switch((char)ch) { 79 case 'l': 80 doline = 1; 81 break; 82 case 'w': 83 doword = 1; 84 break; 85 case 'c': 86 dochar = 1; 87 break; 88 case '?': 89 default: 90 usage(); 91 } 92 argv += optind; 93 argc -= optind; 94 95 /* Wc's flags are on by default. */ 96 if (doline + doword + dochar == 0) 97 doline = doword = dochar = 1; 98 99 errors = 0; 100 total = 0; 101 if (!*argv) { 102 if (cnt((char *)NULL) != 0) 103 ++errors; 104 else 105 (void)printf("\n"); 106 } 107 else do { 108 if (cnt(*argv) != 0) 109 ++errors; 110 else 111 (void)printf(" %s\n", *argv); 112 ++total; 113 } while(*++argv); 114 115 if (total > 1) { 116 if (doline) 117 (void)printf(" %7ju", tlinect); 118 if (doword) 119 (void)printf(" %7ju", twordct); 120 if (dochar) 121 (void)printf(" %7ju", tcharct); 122 (void)printf(" total\n"); 123 } 124 exit(errors == 0 ? 0 : 1); 125 } 126 127 static int 128 cnt(file) 129 const char *file; 130 { 131 struct stat sb; 132 uintmax_t linect, wordct, charct; 133 int fd, len; 134 short gotsp; 135 u_char *p; 136 u_char buf[MAXBSIZE], ch; 137 138 linect = wordct = charct = 0; 139 if (file == NULL) { 140 file = "stdin"; 141 fd = STDIN_FILENO; 142 } else { 143 if ((fd = open(file, O_RDONLY, 0)) < 0) { 144 warn("%s: open", file); 145 return (1); 146 } 147 if (doword) 148 goto word; 149 /* 150 * Line counting is split out because it's a lot faster to get 151 * lines than to get words, since the word count requires some 152 * logic. 153 */ 154 if (doline) { 155 while ((len = read(fd, buf, MAXBSIZE))) { 156 if (len == -1) { 157 warn("%s: read", file); 158 (void)close(fd); 159 return (1); 160 } 161 charct += len; 162 for (p = buf; len--; ++p) 163 if (*p == '\n') 164 ++linect; 165 } 166 tlinect += linect; 167 (void)printf(" %7ju", linect); 168 if (dochar) { 169 tcharct += charct; 170 (void)printf(" %7ju", charct); 171 } 172 (void)close(fd); 173 return (0); 174 } 175 /* 176 * If all we need is the number of characters and it's a 177 * regular or linked file, just stat the puppy. 178 */ 179 if (dochar) { 180 if (fstat(fd, &sb)) { 181 warn("%s: fstat", file); 182 (void)close(fd); 183 return (1); 184 } 185 if (S_ISREG(sb.st_mode) || S_ISLNK(sb.st_mode)) { 186 (void)printf(" %7lld", (long long)sb.st_size); 187 tcharct += sb.st_size; 188 (void)close(fd); 189 return (0); 190 } 191 } 192 } 193 194 /* Do it the hard way... */ 195 word: for (gotsp = 1; (len = read(fd, buf, MAXBSIZE));) { 196 if (len == -1) { 197 warn("%s: read", file); 198 (void)close(fd); 199 return (1); 200 } 201 /* 202 * This loses in the presence of multi-byte characters. 203 * To do it right would require a function to return a 204 * character while knowing how many bytes it consumed. 205 */ 206 charct += len; 207 for (p = buf; len--;) { 208 ch = *p++; 209 if (ch == '\n') 210 ++linect; 211 if (isspace(ch)) 212 gotsp = 1; 213 else if (gotsp) { 214 gotsp = 0; 215 ++wordct; 216 } 217 } 218 } 219 if (doline) { 220 tlinect += linect; 221 (void)printf(" %7ju", linect); 222 } 223 if (doword) { 224 twordct += wordct; 225 (void)printf(" %7ju", wordct); 226 } 227 if (dochar) { 228 tcharct += charct; 229 (void)printf(" %7ju", charct); 230 } 231 (void)close(fd); 232 return (0); 233 } 234 235 static void 236 usage() 237 { 238 (void)fprintf(stderr, "usage: wc [-clw] [file ...]\n"); 239 exit(1); 240 } 241