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15637ed4 RG |
1 | /* |
2 | * Copyright (c) 1980 The Regents of the University of California. | |
3 | * 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 | char copyright[] = | |
36 | "@(#) Copyright (c) 1980 The Regents of the University of California.\n\ | |
37 | All rights reserved.\n"; | |
38 | #endif /* not lint */ | |
39 | ||
40 | #ifndef lint | |
41 | static char sccsid[] = "@(#)xstr.c 5.7 (Berkeley) 2/26/91"; | |
42 | #endif /* not lint */ | |
43 | ||
44 | #include <sys/types.h> | |
45 | #include <signal.h> | |
46 | #include <errno.h> | |
47 | #include <unistd.h> | |
48 | #include <stdio.h> | |
49 | #include <ctype.h> | |
50 | #include <string.h> | |
51 | #include "pathnames.h" | |
52 | ||
53 | /* | |
54 | * xstr - extract and hash strings in a C program | |
55 | * | |
56 | * Bill Joy UCB | |
57 | * November, 1978 | |
58 | */ | |
59 | ||
60 | #define ignore(a) ((void) a) | |
61 | ||
62 | off_t tellpt; | |
63 | off_t hashit(); | |
64 | void onintr(); | |
65 | char *savestr(); | |
66 | off_t yankstr(); | |
67 | ||
68 | off_t mesgpt; | |
69 | char *strings = "strings"; | |
70 | ||
71 | int cflg; | |
72 | int vflg; | |
73 | int readstd; | |
74 | ||
75 | main(argc, argv) | |
76 | int argc; | |
77 | char *argv[]; | |
78 | { | |
79 | ||
80 | argc--, argv++; | |
81 | while (argc > 0 && argv[0][0] == '-') { | |
82 | register char *cp = &(*argv++)[1]; | |
83 | ||
84 | argc--; | |
85 | if (*cp == 0) { | |
86 | readstd++; | |
87 | continue; | |
88 | } | |
89 | do switch (*cp++) { | |
90 | ||
91 | case 'c': | |
92 | cflg++; | |
93 | continue; | |
94 | ||
95 | case 'v': | |
96 | vflg++; | |
97 | continue; | |
98 | ||
99 | default: | |
100 | fprintf(stderr, "usage: xstr [ -v ] [ -c ] [ - ] [ name ... ]\n"); | |
101 | } while (*cp); | |
102 | } | |
103 | if (signal(SIGINT, SIG_IGN) == SIG_DFL) | |
104 | signal(SIGINT, onintr); | |
105 | if (cflg || argc == 0 && !readstd) | |
106 | inithash(); | |
107 | else | |
108 | strings = mktemp(strdup(_PATH_TMP)); | |
109 | while (readstd || argc > 0) { | |
110 | if (freopen("x.c", "w", stdout) == NULL) | |
111 | perror("x.c"), exit(1); | |
112 | if (!readstd && freopen(argv[0], "r", stdin) == NULL) | |
113 | perror(argv[0]), exit(2); | |
114 | process("x.c"); | |
115 | if (readstd == 0) | |
116 | argc--, argv++; | |
117 | else | |
118 | readstd = 0; | |
119 | }; | |
120 | flushsh(); | |
121 | if (cflg == 0) | |
122 | xsdotc(); | |
123 | if (strings[0] == '/') | |
124 | ignore(unlink(strings)); | |
125 | exit(0); | |
126 | } | |
127 | ||
128 | char linebuf[BUFSIZ]; | |
129 | ||
130 | process(name) | |
131 | char *name; | |
132 | { | |
133 | char *cp; | |
134 | register int c; | |
135 | register int incomm = 0; | |
136 | int ret; | |
137 | ||
138 | printf("extern char\txstr[];\n"); | |
139 | for (;;) { | |
140 | if (fgets(linebuf, sizeof linebuf, stdin) == NULL) { | |
141 | if (ferror(stdin)) { | |
142 | perror(name); | |
143 | exit(3); | |
144 | } | |
145 | break; | |
146 | } | |
147 | if (linebuf[0] == '#') { | |
148 | if (linebuf[1] == ' ' && isdigit(linebuf[2])) | |
149 | printf("#line%s", &linebuf[1]); | |
150 | else | |
151 | printf("%s", linebuf); | |
152 | continue; | |
153 | } | |
154 | for (cp = linebuf; c = *cp++;) switch (c) { | |
155 | ||
156 | case '"': | |
157 | if (incomm) | |
158 | goto def; | |
159 | if ((ret = (int) yankstr(&cp)) == -1) | |
160 | goto out; | |
161 | printf("(&xstr[%d])", ret); | |
162 | break; | |
163 | ||
164 | case '\'': | |
165 | if (incomm) | |
166 | goto def; | |
167 | putchar(c); | |
168 | if (*cp) | |
169 | putchar(*cp++); | |
170 | break; | |
171 | ||
172 | case '/': | |
173 | if (incomm || *cp != '*') | |
174 | goto def; | |
175 | incomm = 1; | |
176 | cp++; | |
177 | printf("/*"); | |
178 | continue; | |
179 | ||
180 | case '*': | |
181 | if (incomm && *cp == '/') { | |
182 | incomm = 0; | |
183 | cp++; | |
184 | printf("*/"); | |
185 | continue; | |
186 | } | |
187 | goto def; | |
188 | ||
189 | def: | |
190 | default: | |
191 | putchar(c); | |
192 | break; | |
193 | } | |
194 | } | |
195 | out: | |
196 | if (ferror(stdout)) | |
197 | perror("x.c"), onintr(); | |
198 | } | |
199 | ||
200 | off_t | |
201 | yankstr(cpp) | |
202 | register char **cpp; | |
203 | { | |
204 | register char *cp = *cpp; | |
205 | register int c, ch; | |
206 | char dbuf[BUFSIZ]; | |
207 | register char *dp = dbuf; | |
208 | register char *tp; | |
209 | ||
210 | while (c = *cp++) { | |
211 | switch (c) { | |
212 | ||
213 | case '"': | |
214 | cp++; | |
215 | goto out; | |
216 | ||
217 | case '\\': | |
218 | c = *cp++; | |
219 | if (c == 0) | |
220 | break; | |
221 | if (c == '\n') { | |
222 | if (fgets(linebuf, sizeof linebuf, stdin) | |
223 | == NULL) { | |
224 | if (ferror(stdin)) { | |
225 | perror("x.c"); | |
226 | exit(3); | |
227 | } | |
228 | return(-1); | |
229 | } | |
230 | cp = linebuf; | |
231 | continue; | |
232 | } | |
233 | for (tp = "b\bt\tr\rn\nf\f\\\\\"\""; ch = *tp++; tp++) | |
234 | if (c == ch) { | |
235 | c = *tp; | |
236 | goto gotc; | |
237 | } | |
238 | if (!octdigit(c)) { | |
239 | *dp++ = '\\'; | |
240 | break; | |
241 | } | |
242 | c -= '0'; | |
243 | if (!octdigit(*cp)) | |
244 | break; | |
245 | c <<= 3, c += *cp++ - '0'; | |
246 | if (!octdigit(*cp)) | |
247 | break; | |
248 | c <<= 3, c += *cp++ - '0'; | |
249 | break; | |
250 | } | |
251 | gotc: | |
252 | *dp++ = c; | |
253 | } | |
254 | out: | |
255 | *cpp = --cp; | |
256 | *dp = 0; | |
257 | return (hashit(dbuf, 1)); | |
258 | } | |
259 | ||
260 | octdigit(c) | |
261 | char c; | |
262 | { | |
263 | ||
264 | return (isdigit(c) && c != '8' && c != '9'); | |
265 | } | |
266 | ||
267 | inithash() | |
268 | { | |
269 | char buf[BUFSIZ]; | |
270 | register FILE *mesgread = fopen(strings, "r"); | |
271 | ||
272 | if (mesgread == NULL) | |
273 | return; | |
274 | for (;;) { | |
275 | mesgpt = tellpt; | |
276 | if (fgetNUL(buf, sizeof buf, mesgread) == NULL) | |
277 | break; | |
278 | ignore(hashit(buf, 0)); | |
279 | } | |
280 | ignore(fclose(mesgread)); | |
281 | } | |
282 | ||
283 | fgetNUL(obuf, rmdr, file) | |
284 | char *obuf; | |
285 | register int rmdr; | |
286 | FILE *file; | |
287 | { | |
288 | register c; | |
289 | register char *buf = obuf; | |
290 | ||
291 | while (--rmdr > 0 && (c = xgetc(file)) != 0 && c != EOF) | |
292 | *buf++ = c; | |
293 | *buf++ = 0; | |
294 | return ((feof(file) || ferror(file)) ? NULL : 1); | |
295 | } | |
296 | ||
297 | xgetc(file) | |
298 | FILE *file; | |
299 | { | |
300 | ||
301 | tellpt++; | |
302 | return (getc(file)); | |
303 | } | |
304 | ||
305 | #define BUCKETS 128 | |
306 | ||
307 | struct hash { | |
308 | off_t hpt; | |
309 | char *hstr; | |
310 | struct hash *hnext; | |
311 | short hnew; | |
312 | } bucket[BUCKETS]; | |
313 | ||
314 | off_t | |
315 | hashit(str, new) | |
316 | char *str; | |
317 | int new; | |
318 | { | |
319 | int i; | |
320 | register struct hash *hp, *hp0; | |
321 | ||
322 | hp = hp0 = &bucket[lastchr(str) & 0177]; | |
323 | while (hp->hnext) { | |
324 | hp = hp->hnext; | |
325 | i = istail(str, hp->hstr); | |
326 | if (i >= 0) | |
327 | return (hp->hpt + i); | |
328 | } | |
329 | if ((hp = (struct hash *) calloc(1, sizeof (*hp))) == NULL) { | |
330 | perror("xstr"); | |
331 | exit(8); | |
332 | } | |
333 | hp->hpt = mesgpt; | |
334 | if (!(hp->hstr = strdup(str))) { | |
335 | (void)fprintf(stderr, "xstr: %s\n", strerror(errno)); | |
336 | exit(1); | |
337 | } | |
338 | mesgpt += strlen(hp->hstr) + 1; | |
339 | hp->hnext = hp0->hnext; | |
340 | hp->hnew = new; | |
341 | hp0->hnext = hp; | |
342 | return (hp->hpt); | |
343 | } | |
344 | ||
345 | flushsh() | |
346 | { | |
347 | register int i; | |
348 | register struct hash *hp; | |
349 | register FILE *mesgwrit; | |
350 | register int old = 0, new = 0; | |
351 | ||
352 | for (i = 0; i < BUCKETS; i++) | |
353 | for (hp = bucket[i].hnext; hp != NULL; hp = hp->hnext) | |
354 | if (hp->hnew) | |
355 | new++; | |
356 | else | |
357 | old++; | |
358 | if (new == 0 && old != 0) | |
359 | return; | |
360 | mesgwrit = fopen(strings, old ? "r+" : "w"); | |
361 | if (mesgwrit == NULL) | |
362 | perror(strings), exit(4); | |
363 | for (i = 0; i < BUCKETS; i++) | |
364 | for (hp = bucket[i].hnext; hp != NULL; hp = hp->hnext) { | |
365 | found(hp->hnew, hp->hpt, hp->hstr); | |
366 | if (hp->hnew) { | |
367 | fseek(mesgwrit, hp->hpt, 0); | |
368 | ignore(fwrite(hp->hstr, strlen(hp->hstr) + 1, 1, mesgwrit)); | |
369 | if (ferror(mesgwrit)) | |
370 | perror(strings), exit(4); | |
371 | } | |
372 | } | |
373 | if (fclose(mesgwrit) == EOF) | |
374 | perror(strings), exit(4); | |
375 | } | |
376 | ||
377 | found(new, off, str) | |
378 | int new; | |
379 | off_t off; | |
380 | char *str; | |
381 | { | |
382 | if (vflg == 0) | |
383 | return; | |
384 | if (!new) | |
385 | fprintf(stderr, "found at %d:", (int) off); | |
386 | else | |
387 | fprintf(stderr, "new at %d:", (int) off); | |
388 | prstr(str); | |
389 | fprintf(stderr, "\n"); | |
390 | } | |
391 | ||
392 | prstr(cp) | |
393 | register char *cp; | |
394 | { | |
395 | register int c; | |
396 | ||
397 | while (c = (*cp++ & 0377)) | |
398 | if (c < ' ') | |
399 | fprintf(stderr, "^%c", c + '`'); | |
400 | else if (c == 0177) | |
401 | fprintf(stderr, "^?"); | |
402 | else if (c > 0200) | |
403 | fprintf(stderr, "\\%03o", c); | |
404 | else | |
405 | fprintf(stderr, "%c", c); | |
406 | } | |
407 | ||
408 | xsdotc() | |
409 | { | |
410 | register FILE *strf = fopen(strings, "r"); | |
411 | register FILE *xdotcf; | |
412 | ||
413 | if (strf == NULL) | |
414 | perror(strings), exit(5); | |
415 | xdotcf = fopen("xs.c", "w"); | |
416 | if (xdotcf == NULL) | |
417 | perror("xs.c"), exit(6); | |
418 | fprintf(xdotcf, "char\txstr[] = {\n"); | |
419 | for (;;) { | |
420 | register int i, c; | |
421 | ||
422 | for (i = 0; i < 8; i++) { | |
423 | c = getc(strf); | |
424 | if (ferror(strf)) { | |
425 | perror(strings); | |
426 | onintr(); | |
427 | } | |
428 | if (feof(strf)) { | |
429 | fprintf(xdotcf, "\n"); | |
430 | goto out; | |
431 | } | |
432 | fprintf(xdotcf, "0x%02x,", c); | |
433 | } | |
434 | fprintf(xdotcf, "\n"); | |
435 | } | |
436 | out: | |
437 | fprintf(xdotcf, "};\n"); | |
438 | ignore(fclose(xdotcf)); | |
439 | ignore(fclose(strf)); | |
440 | } | |
441 | ||
442 | lastchr(cp) | |
443 | register char *cp; | |
444 | { | |
445 | ||
446 | while (cp[0] && cp[1]) | |
447 | cp++; | |
448 | return (*cp); | |
449 | } | |
450 | ||
451 | istail(str, of) | |
452 | register char *str, *of; | |
453 | { | |
454 | register int d = strlen(of) - strlen(str); | |
455 | ||
456 | if (d < 0 || strcmp(&of[d], str) != 0) | |
457 | return (-1); | |
458 | return (d); | |
459 | } | |
460 | ||
461 | void | |
462 | onintr() | |
463 | { | |
464 | ||
465 | ignore(signal(SIGINT, SIG_IGN)); | |
466 | if (strings[0] == '/') | |
467 | ignore(unlink(strings)); | |
468 | ignore(unlink("x.c")); | |
469 | ignore(unlink("xs.c")); | |
470 | exit(7); | |
471 | } |