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