Commit | Line | Data |
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f42904bc DF |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
5 | */ | |
6 | ||
7 | #ifndef lint | |
8 | char copyright[] = | |
9 | "@(#) Copyright (c) 1980 Regents of the University of California.\n\ | |
10 | All rights reserved.\n"; | |
11 | #endif not lint | |
12 | ||
13 | #ifndef lint | |
654d8cfc | 14 | static char sccsid[] = "@(#)xstr.c 5.3 (Berkeley) %G%"; |
f42904bc DF |
15 | #endif not lint |
16 | ||
4db42f7f BJ |
17 | #include <stdio.h> |
18 | #include <ctype.h> | |
19 | #include <sys/types.h> | |
20 | #include <signal.h> | |
21 | ||
22 | /* | |
23 | * xstr - extract and hash strings in a C program | |
24 | * | |
25 | * Bill Joy UCB | |
26 | * November, 1978 | |
27 | */ | |
28 | ||
654d8cfc | 29 | #define ignore(a) ((void) a) |
4db42f7f BJ |
30 | |
31 | char *calloc(); | |
32 | off_t tellpt; | |
33 | off_t hashit(); | |
34 | char *mktemp(); | |
35 | int onintr(); | |
36 | char *savestr(); | |
37 | char *strcat(); | |
38 | char *strcpy(); | |
39 | off_t yankstr(); | |
40 | ||
41 | off_t mesgpt; | |
42 | char *strings = "strings"; | |
43 | ||
44 | int cflg; | |
45 | int vflg; | |
46 | int readstd; | |
47 | ||
48 | main(argc, argv) | |
49 | int argc; | |
50 | char *argv[]; | |
51 | { | |
52 | ||
53 | argc--, argv++; | |
54 | while (argc > 0 && argv[0][0] == '-') { | |
55 | register char *cp = &(*argv++)[1]; | |
56 | ||
57 | argc--; | |
58 | if (*cp == 0) { | |
59 | readstd++; | |
60 | continue; | |
61 | } | |
62 | do switch (*cp++) { | |
63 | ||
64 | case 'c': | |
65 | cflg++; | |
66 | continue; | |
67 | ||
68 | case 'v': | |
69 | vflg++; | |
70 | continue; | |
71 | ||
72 | default: | |
73 | fprintf(stderr, "usage: xstr [ -v ] [ -c ] [ - ] [ name ... ]\n"); | |
74 | } while (*cp); | |
75 | } | |
76 | if (signal(SIGINT, SIG_IGN) == SIG_DFL) | |
77 | signal(SIGINT, onintr); | |
78 | if (cflg || argc == 0 && !readstd) | |
79 | inithash(); | |
80 | else | |
81 | strings = mktemp(savestr("/tmp/xstrXXXXXX")); | |
82 | while (readstd || argc > 0) { | |
83 | if (freopen("x.c", "w", stdout) == NULL) | |
84 | perror("x.c"), exit(1); | |
85 | if (!readstd && freopen(argv[0], "r", stdin) == NULL) | |
86 | perror(argv[0]), exit(2); | |
87 | process("x.c"); | |
88 | if (readstd == 0) | |
89 | argc--, argv++; | |
90 | else | |
91 | readstd = 0; | |
92 | }; | |
93 | flushsh(); | |
94 | if (cflg == 0) | |
95 | xsdotc(); | |
96 | if (strings[0] == '/') | |
97 | ignore(unlink(strings)); | |
98 | exit(0); | |
99 | } | |
100 | ||
48b802d7 JB |
101 | char linebuf[BUFSIZ]; |
102 | ||
4db42f7f BJ |
103 | process(name) |
104 | char *name; | |
105 | { | |
106 | char *cp; | |
4db42f7f BJ |
107 | register int c; |
108 | register int incomm = 0; | |
48b802d7 | 109 | int ret; |
4db42f7f | 110 | |
48b802d7 | 111 | printf("extern char\txstr[];\n"); |
4db42f7f BJ |
112 | for (;;) { |
113 | if (fgets(linebuf, sizeof linebuf, stdin) == NULL) { | |
114 | if (ferror(stdin)) { | |
115 | perror(name); | |
116 | exit(3); | |
117 | } | |
118 | break; | |
119 | } | |
120 | if (linebuf[0] == '#') { | |
121 | if (linebuf[1] == ' ' && isdigit(linebuf[2])) | |
122 | printf("#line%s", &linebuf[1]); | |
123 | else | |
124 | printf("%s", linebuf); | |
125 | continue; | |
126 | } | |
127 | for (cp = linebuf; c = *cp++;) switch (c) { | |
128 | ||
129 | case '"': | |
130 | if (incomm) | |
131 | goto def; | |
48b802d7 JB |
132 | if ((ret = (int) yankstr(&cp)) == -1) |
133 | goto out; | |
134 | printf("(&xstr[%d])", ret); | |
4db42f7f BJ |
135 | break; |
136 | ||
137 | case '\'': | |
138 | if (incomm) | |
139 | goto def; | |
140 | putchar(c); | |
141 | if (*cp) | |
142 | putchar(*cp++); | |
143 | break; | |
144 | ||
145 | case '/': | |
146 | if (incomm || *cp != '*') | |
147 | goto def; | |
148 | incomm = 1; | |
149 | cp++; | |
150 | printf("/*"); | |
151 | continue; | |
152 | ||
153 | case '*': | |
154 | if (incomm && *cp == '/') { | |
155 | incomm = 0; | |
156 | cp++; | |
157 | printf("*/"); | |
158 | continue; | |
159 | } | |
160 | goto def; | |
161 | ||
162 | def: | |
163 | default: | |
164 | putchar(c); | |
165 | break; | |
166 | } | |
167 | } | |
48b802d7 | 168 | out: |
4db42f7f BJ |
169 | if (ferror(stdout)) |
170 | perror("x.c"), onintr(); | |
171 | } | |
172 | ||
173 | off_t | |
174 | yankstr(cpp) | |
175 | register char **cpp; | |
176 | { | |
177 | register char *cp = *cpp; | |
178 | register int c, ch; | |
179 | char dbuf[BUFSIZ]; | |
180 | register char *dp = dbuf; | |
181 | register char *tp; | |
182 | ||
183 | while (c = *cp++) { | |
184 | switch (c) { | |
185 | ||
186 | case '"': | |
187 | cp++; | |
188 | goto out; | |
189 | ||
190 | case '\\': | |
191 | c = *cp++; | |
192 | if (c == 0) | |
193 | break; | |
48b802d7 JB |
194 | if (c == '\n') { |
195 | if (fgets(linebuf, sizeof linebuf, stdin) | |
196 | == NULL) { | |
197 | if (ferror(stdin)) { | |
198 | perror("x.c"); | |
199 | exit(3); | |
200 | } | |
201 | return(-1); | |
202 | } | |
203 | cp = linebuf; | |
4db42f7f | 204 | continue; |
48b802d7 | 205 | } |
4db42f7f BJ |
206 | for (tp = "b\bt\tr\rn\nf\f\\\\\"\""; ch = *tp++; tp++) |
207 | if (c == ch) { | |
208 | c = *tp; | |
209 | goto gotc; | |
210 | } | |
211 | if (!octdigit(c)) { | |
212 | *dp++ = '\\'; | |
213 | break; | |
214 | } | |
215 | c -= '0'; | |
216 | if (!octdigit(*cp)) | |
217 | break; | |
218 | c <<= 3, c += *cp++ - '0'; | |
219 | if (!octdigit(*cp)) | |
220 | break; | |
221 | c <<= 3, c += *cp++ - '0'; | |
222 | break; | |
223 | } | |
224 | gotc: | |
225 | *dp++ = c; | |
226 | } | |
227 | out: | |
228 | *cpp = --cp; | |
229 | *dp = 0; | |
230 | return (hashit(dbuf, 1)); | |
231 | } | |
232 | ||
233 | octdigit(c) | |
234 | char c; | |
235 | { | |
236 | ||
237 | return (isdigit(c) && c != '8' && c != '9'); | |
238 | } | |
239 | ||
240 | inithash() | |
241 | { | |
242 | char buf[BUFSIZ]; | |
243 | register FILE *mesgread = fopen(strings, "r"); | |
244 | ||
245 | if (mesgread == NULL) | |
246 | return; | |
247 | for (;;) { | |
248 | mesgpt = tellpt; | |
249 | if (fgetNUL(buf, sizeof buf, mesgread) == NULL) | |
250 | break; | |
251 | ignore(hashit(buf, 0)); | |
252 | } | |
253 | ignore(fclose(mesgread)); | |
254 | } | |
255 | ||
256 | fgetNUL(obuf, rmdr, file) | |
257 | char *obuf; | |
258 | register int rmdr; | |
259 | FILE *file; | |
260 | { | |
261 | register c; | |
262 | register char *buf = obuf; | |
263 | ||
264 | while (--rmdr > 0 && (c = xgetc(file)) != 0 && c != EOF) | |
265 | *buf++ = c; | |
266 | *buf++ = 0; | |
267 | return ((feof(file) || ferror(file)) ? NULL : 1); | |
268 | } | |
269 | ||
270 | xgetc(file) | |
271 | FILE *file; | |
272 | { | |
273 | ||
274 | tellpt++; | |
275 | return (getc(file)); | |
276 | } | |
277 | ||
278 | #define BUCKETS 128 | |
279 | ||
280 | struct hash { | |
281 | off_t hpt; | |
282 | char *hstr; | |
283 | struct hash *hnext; | |
284 | short hnew; | |
285 | } bucket[BUCKETS]; | |
286 | ||
287 | off_t | |
288 | hashit(str, new) | |
289 | char *str; | |
290 | int new; | |
291 | { | |
292 | int i; | |
293 | register struct hash *hp, *hp0; | |
294 | ||
295 | hp = hp0 = &bucket[lastchr(str) & 0177]; | |
296 | while (hp->hnext) { | |
297 | hp = hp->hnext; | |
298 | i = istail(str, hp->hstr); | |
299 | if (i >= 0) | |
300 | return (hp->hpt + i); | |
301 | } | |
654d8cfc KM |
302 | if ((hp = (struct hash *) calloc(1, sizeof (*hp))) == NULL) { |
303 | perror("xstr"); | |
304 | exit(8); | |
305 | } | |
4db42f7f BJ |
306 | hp->hpt = mesgpt; |
307 | hp->hstr = savestr(str); | |
308 | mesgpt += strlen(hp->hstr) + 1; | |
309 | hp->hnext = hp0->hnext; | |
310 | hp->hnew = new; | |
311 | hp0->hnext = hp; | |
312 | return (hp->hpt); | |
313 | } | |
314 | ||
315 | flushsh() | |
316 | { | |
317 | register int i; | |
318 | register struct hash *hp; | |
319 | register FILE *mesgwrit; | |
320 | register int old = 0, new = 0; | |
321 | ||
322 | for (i = 0; i < BUCKETS; i++) | |
323 | for (hp = bucket[i].hnext; hp != NULL; hp = hp->hnext) | |
324 | if (hp->hnew) | |
325 | new++; | |
326 | else | |
327 | old++; | |
328 | if (new == 0 && old != 0) | |
329 | return; | |
dd558f1f | 330 | mesgwrit = fopen(strings, old ? "r+" : "w"); |
f5affc92 BJ |
331 | if (mesgwrit == NULL) |
332 | perror(strings), exit(4); | |
4db42f7f BJ |
333 | for (i = 0; i < BUCKETS; i++) |
334 | for (hp = bucket[i].hnext; hp != NULL; hp = hp->hnext) { | |
335 | found(hp->hnew, hp->hpt, hp->hstr); | |
336 | if (hp->hnew) { | |
337 | fseek(mesgwrit, hp->hpt, 0); | |
338 | ignore(fwrite(hp->hstr, strlen(hp->hstr) + 1, 1, mesgwrit)); | |
339 | if (ferror(mesgwrit)) | |
340 | perror(strings), exit(4); | |
341 | } | |
342 | } | |
654d8cfc KM |
343 | if (fclose(mesgwrit) == EOF) |
344 | perror(strings), exit(4); | |
4db42f7f BJ |
345 | } |
346 | ||
347 | found(new, off, str) | |
348 | int new; | |
349 | off_t off; | |
350 | char *str; | |
351 | { | |
4db42f7f BJ |
352 | if (vflg == 0) |
353 | return; | |
354 | if (!new) | |
355 | fprintf(stderr, "found at %d:", (int) off); | |
356 | else | |
357 | fprintf(stderr, "new at %d:", (int) off); | |
358 | prstr(str); | |
359 | fprintf(stderr, "\n"); | |
360 | } | |
361 | ||
362 | prstr(cp) | |
363 | register char *cp; | |
364 | { | |
365 | register int c; | |
366 | ||
367 | while (c = (*cp++ & 0377)) | |
368 | if (c < ' ') | |
369 | fprintf(stderr, "^%c", c + '`'); | |
370 | else if (c == 0177) | |
371 | fprintf(stderr, "^?"); | |
372 | else if (c > 0200) | |
373 | fprintf(stderr, "\\%03o", c); | |
374 | else | |
375 | fprintf(stderr, "%c", c); | |
376 | } | |
377 | ||
378 | xsdotc() | |
379 | { | |
380 | register FILE *strf = fopen(strings, "r"); | |
381 | register FILE *xdotcf; | |
382 | ||
383 | if (strf == NULL) | |
384 | perror(strings), exit(5); | |
385 | xdotcf = fopen("xs.c", "w"); | |
386 | if (xdotcf == NULL) | |
387 | perror("xs.c"), exit(6); | |
388 | fprintf(xdotcf, "char\txstr[] = {\n"); | |
389 | for (;;) { | |
390 | register int i, c; | |
391 | ||
392 | for (i = 0; i < 8; i++) { | |
393 | c = getc(strf); | |
394 | if (ferror(strf)) { | |
395 | perror(strings); | |
396 | onintr(); | |
397 | } | |
398 | if (feof(strf)) { | |
399 | fprintf(xdotcf, "\n"); | |
400 | goto out; | |
401 | } | |
402 | fprintf(xdotcf, "0x%02x,", c); | |
403 | } | |
404 | fprintf(xdotcf, "\n"); | |
405 | } | |
406 | out: | |
407 | fprintf(xdotcf, "};\n"); | |
408 | ignore(fclose(xdotcf)); | |
409 | ignore(fclose(strf)); | |
410 | } | |
411 | ||
412 | char * | |
413 | savestr(cp) | |
414 | register char *cp; | |
415 | { | |
654d8cfc | 416 | register char *dp; |
4db42f7f | 417 | |
654d8cfc KM |
418 | if ((dp = (char *) calloc(1, strlen(cp) + 1)) == NULL) { |
419 | perror("xstr"); | |
420 | exit(8); | |
421 | } | |
4db42f7f BJ |
422 | return (strcpy(dp, cp)); |
423 | } | |
424 | ||
4db42f7f BJ |
425 | lastchr(cp) |
426 | register char *cp; | |
427 | { | |
428 | ||
429 | while (cp[0] && cp[1]) | |
430 | cp++; | |
431 | return (*cp); | |
432 | } | |
433 | ||
434 | istail(str, of) | |
435 | register char *str, *of; | |
436 | { | |
437 | register int d = strlen(of) - strlen(str); | |
438 | ||
439 | if (d < 0 || strcmp(&of[d], str) != 0) | |
440 | return (-1); | |
441 | return (d); | |
442 | } | |
443 | ||
444 | onintr() | |
445 | { | |
446 | ||
654d8cfc | 447 | ignore(signal(SIGINT, SIG_IGN)); |
4db42f7f BJ |
448 | if (strings[0] == '/') |
449 | ignore(unlink(strings)); | |
450 | ignore(unlink("x.c")); | |
451 | ignore(unlink("xs.c")); | |
452 | exit(7); | |
453 | } |