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f42904bc | 1 | /* |
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2 | * Copyright (c) 1980, 1987 Regents of the University of California. |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms are permitted | |
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6 | * provided that the above copyright notice and this paragraph are |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
f42904bc DF |
16 | */ |
17 | ||
18 | #ifndef lint | |
19 | char copyright[] = | |
2d5da4ef | 20 | "@(#) Copyright (c) 1980, 1987 Regents of the University of California.\n\ |
f42904bc | 21 | All rights reserved.\n"; |
2d5da4ef | 22 | #endif /* not lint */ |
f42904bc DF |
23 | |
24 | #ifndef lint | |
e4e131e4 | 25 | static char sccsid[] = "@(#)wc.c 5.5 (Berkeley) %G%"; |
2d5da4ef | 26 | #endif /* not lint */ |
f42904bc | 27 | |
93b63814 | 28 | /* wc line, word and char count */ |
66690d0f | 29 | |
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30 | #include <sys/param.h> |
31 | #include <sys/stat.h> | |
32 | #include <sys/file.h> | |
66690d0f | 33 | #include <stdio.h> |
66690d0f | 34 | |
93b63814 | 35 | #define DEL 0177 /* del char */ |
93b63814 | 36 | #define NL 012 /* newline char */ |
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37 | #define SPACE 040 /* space char */ |
38 | #define TAB 011 /* tab char */ | |
93b63814 | 39 | |
2d5da4ef | 40 | static long tlinect, twordct, tcharct; |
e4e131e4 | 41 | static int doline, doword, dochar; |
93b63814 | 42 | |
e4e131e4 | 43 | main(argc, argv) |
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44 | int argc; |
45 | char **argv; | |
66690d0f | 46 | { |
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47 | extern int optind; |
48 | register int ch; | |
e4e131e4 | 49 | int total; |
66690d0f | 50 | |
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51 | /* |
52 | * wc is unusual in that its flags are on by default, so, | |
53 | * if you don't get any arguments, you have to turn them | |
54 | * all on. | |
55 | */ | |
56 | if (argc > 1 && argv[1][0] == '-' && argv[1][1]) { | |
e4e131e4 | 57 | while ((ch = getopt(argc, argv, "lwc")) != EOF) |
93b63814 | 58 | switch((char)ch) { |
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59 | case 'l': |
60 | doline = 1; | |
61 | break; | |
62 | case 'w': | |
63 | doword = 1; | |
64 | break; | |
65 | case 'c': | |
66 | dochar = 1; | |
67 | break; | |
68 | case '?': | |
69 | default: | |
e4e131e4 | 70 | fputs("usage: wc [-lwc] [files]\n", stderr); |
2d5da4ef | 71 | exit(1); |
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72 | } |
73 | argv += optind; | |
74 | argc -= optind; | |
75 | } | |
76 | else { | |
77 | ++argv; | |
78 | --argc; | |
2d5da4ef | 79 | doline = doword = dochar = 1; |
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80 | } |
81 | ||
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82 | total = 0; |
83 | if (!*argv) { | |
84 | cnt((char *)NULL); | |
85 | putchar('\n'); | |
66690d0f | 86 | } |
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87 | else do { |
88 | cnt(*argv); | |
89 | printf(" %s\n", *argv); | |
90 | ++total; | |
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91 | } while(*++argv); |
92 | ||
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93 | if (total > 1) { |
94 | if (doline) | |
95 | printf(" %7ld", tlinect); | |
96 | if (doword) | |
97 | printf(" %7ld", twordct); | |
98 | if (dochar) | |
99 | printf(" %7ld", tcharct); | |
100 | puts(" total"); | |
101 | } | |
2d5da4ef | 102 | exit(0); |
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103 | } |
104 | ||
105 | static | |
106 | cnt(file) | |
2d5da4ef | 107 | char *file; |
93b63814 | 108 | { |
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109 | register u_char *C; |
110 | register short gotsp; | |
111 | register int len; | |
e4e131e4 | 112 | register long linect, wordct, charct; |
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113 | struct stat sbuf; |
114 | int fd; | |
115 | u_char buf[MAXBSIZE]; | |
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116 | |
117 | linect = wordct = charct = 0; | |
118 | if (file) { | |
2d5da4ef | 119 | if ((fd = open(file, O_RDONLY, 0)) < 0) { |
93b63814 | 120 | perror(file); |
2d5da4ef | 121 | exit(1); |
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122 | } |
123 | if (!doword) { | |
124 | /* | |
125 | * line counting is split out because it's a lot | |
126 | * faster to get lines than to get words, since | |
127 | * the word count requires some logic. | |
128 | */ | |
129 | if (doline) { | |
2d5da4ef | 130 | while(len = read(fd, buf, MAXBSIZE)) { |
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131 | if (len == -1) { |
132 | perror(file); | |
2d5da4ef | 133 | exit(1); |
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134 | } |
135 | charct += len; | |
2d5da4ef | 136 | for (C = buf; len--; ++C) |
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137 | if (*C == '\n') |
138 | ++linect; | |
139 | } | |
140 | tlinect += linect; | |
2d5da4ef | 141 | printf(" %7ld", linect); |
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142 | if (dochar) { |
143 | tcharct += charct; | |
e4e131e4 | 144 | printf(" %7ld", charct); |
66690d0f | 145 | } |
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146 | close(fd); |
147 | return; | |
66690d0f | 148 | } |
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149 | /* |
150 | * if all we need is the number of characters and | |
151 | * it's a directory or a regular or linked file, just | |
152 | * stat the puppy. We avoid testing for it not being | |
153 | * a special device in case someone adds a new type | |
154 | * of inode. | |
155 | */ | |
156 | if (dochar) { | |
2d5da4ef | 157 | if (fstat(fd, &sbuf)) { |
93b63814 | 158 | perror(file); |
2d5da4ef | 159 | exit(1); |
93b63814 KB |
160 | } |
161 | if (sbuf.st_mode & (S_IFREG | S_IFLNK | S_IFDIR)) { | |
2d5da4ef | 162 | printf(" %7ld", sbuf.st_size); |
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163 | tcharct += sbuf.st_size; |
164 | close(fd); | |
165 | return; | |
166 | } | |
66690d0f | 167 | } |
66690d0f | 168 | } |
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169 | } |
170 | else | |
171 | fd = 0; | |
172 | /* do it the hard way... */ | |
2d5da4ef | 173 | for (gotsp = 1; len = read(fd, buf, MAXBSIZE);) { |
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174 | if (len == -1) { |
175 | perror(file); | |
2d5da4ef | 176 | exit(1); |
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177 | } |
178 | charct += len; | |
2d5da4ef | 179 | for (C = buf; len--; ++C) |
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180 | switch(*C) { |
181 | case NL: | |
182 | ++linect; | |
183 | case TAB: | |
184 | case SPACE: | |
2d5da4ef | 185 | gotsp = 1; |
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186 | continue; |
187 | default: | |
2d5da4ef | 188 | #ifdef notdef |
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189 | /* |
190 | * This line of code implements the | |
191 | * original V7 wc algorithm, i.e. | |
192 | * a non-printing character doesn't | |
193 | * toggle the "word" count, so that | |
194 | * " ^D^F " counts as 6 spaces, | |
195 | * while "foo^D^Fbar" counts as 8 | |
196 | * characters. | |
197 | * | |
198 | * test order is important -- gotsp | |
199 | * will normally be NO, so test it | |
200 | * first | |
201 | */ | |
202 | if (gotsp && *C > SPACE && *C < DEL) { | |
2d5da4ef | 203 | #endif |
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204 | /* |
205 | * This line implements the manual | |
206 | * page, i.e. a word is a "maximal | |
207 | * string of characters delimited by | |
208 | * spaces, tabs or newlines." Notice | |
209 | * nothing was said about a character | |
210 | * being printing or non-printing. | |
211 | */ | |
212 | if (gotsp) { | |
2d5da4ef | 213 | gotsp = 0; |
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214 | ++wordct; |
215 | } | |
216 | } | |
217 | } | |
218 | if (doline) { | |
66690d0f | 219 | tlinect += linect; |
2d5da4ef | 220 | printf(" %7ld", linect); |
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221 | } |
222 | if (doword) { | |
66690d0f | 223 | twordct += wordct; |
2d5da4ef | 224 | printf(" %7ld", wordct); |
66690d0f | 225 | } |
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226 | if (dochar) { |
227 | tcharct += charct; | |
2d5da4ef | 228 | printf(" %7ld", charct); |
66690d0f | 229 | } |
93b63814 | 230 | close(fd); |
66690d0f | 231 | } |