Commit | Line | Data |
de3bb511 |
1 | /* $RCSfile: util.c,v $$Revision: 4.0.1.3 $$Date: 91/11/05 19:18:26 $ |
a687059c |
2 | * |
d48672a2 |
3 | * Copyright (c) 1991, Larry Wall |
a687059c |
4 | * |
d48672a2 |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. |
8d063cd8 |
7 | * |
8 | * $Log: util.c,v $ |
de3bb511 |
9 | * Revision 4.0.1.3 91/11/05 19:18:26 lwall |
10 | * patch11: safe malloc code now integrated into Perl's malloc when possible |
11 | * patch11: index("little", "longer string") could visit faraway places |
12 | * patch11: warn '-' x 10000 dumped core |
13 | * patch11: forked exec on non-existent program now issues a warning |
14 | * |
d48672a2 |
15 | * Revision 4.0.1.2 91/06/07 12:10:42 lwall |
16 | * patch4: new copyright notice |
17 | * patch4: made some allowances for "semi-standard" C |
18 | * patch4: index() could blow up searching for null string |
19 | * patch4: taintchecks could improperly modify parent in vfork() |
20 | * patch4: exec would close files even if you cleared close-on-exec flag |
21 | * |
35c8bce7 |
22 | * Revision 4.0.1.1 91/04/12 09:19:25 lwall |
23 | * patch1: random cleanup in cpp namespace |
24 | * |
fe14fcc3 |
25 | * Revision 4.0 91/03/20 01:56:39 lwall |
26 | * 4.0 baseline. |
8d063cd8 |
27 | * |
28 | */ |
de3bb511 |
29 | /*SUPPRESS 112*/ |
8d063cd8 |
30 | |
8d063cd8 |
31 | #include "EXTERN.h" |
8d063cd8 |
32 | #include "perl.h" |
62b28dd9 |
33 | |
6eb13c3b |
34 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
a687059c |
35 | #include <signal.h> |
62b28dd9 |
36 | #endif |
a687059c |
37 | |
38 | #ifdef I_VFORK |
39 | # include <vfork.h> |
40 | #endif |
41 | |
42 | #ifdef I_VARARGS |
43 | # include <varargs.h> |
44 | #endif |
8d063cd8 |
45 | |
fe14fcc3 |
46 | #ifdef I_FCNTL |
47 | # include <fcntl.h> |
48 | #endif |
49 | #ifdef I_SYS_FILE |
50 | # include <sys/file.h> |
51 | #endif |
52 | |
8d063cd8 |
53 | #define FLUSH |
8d063cd8 |
54 | |
de3bb511 |
55 | #ifndef safemalloc |
56 | |
8d063cd8 |
57 | static char nomem[] = "Out of memory!\n"; |
58 | |
59 | /* paranoid version of malloc */ |
60 | |
378cc40b |
61 | #ifdef DEBUGGING |
8d063cd8 |
62 | static int an = 0; |
378cc40b |
63 | #endif |
8d063cd8 |
64 | |
a687059c |
65 | /* NOTE: Do not call the next three routines directly. Use the macros |
66 | * in handy.h, so that we can easily redefine everything to do tracking of |
67 | * allocated hunks back to the original New to track down any memory leaks. |
68 | */ |
69 | |
8d063cd8 |
70 | char * |
71 | safemalloc(size) |
62b28dd9 |
72 | #ifdef MSDOS |
73 | unsigned long size; |
74 | #else |
8d063cd8 |
75 | MEM_SIZE size; |
62b28dd9 |
76 | #endif /* MSDOS */ |
8d063cd8 |
77 | { |
78 | char *ptr; |
d48672a2 |
79 | #ifndef STANDARD_C |
8d063cd8 |
80 | char *malloc(); |
d48672a2 |
81 | #endif /* ! STANDARD_C */ |
8d063cd8 |
82 | |
62b28dd9 |
83 | #ifdef MSDOS |
84 | if (size > 0xffff) { |
85 | fprintf(stderr, "Allocation too large: %lx\n", size) FLUSH; |
86 | exit(1); |
87 | } |
88 | #endif /* MSDOS */ |
34de22dd |
89 | #ifdef DEBUGGING |
90 | if ((long)size < 0) |
91 | fatal("panic: malloc"); |
92 | #endif |
8d063cd8 |
93 | ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
94 | #ifdef DEBUGGING |
a687059c |
95 | # ifndef I286 |
8d063cd8 |
96 | if (debug & 128) |
97 | fprintf(stderr,"0x%x: (%05d) malloc %d bytes\n",ptr,an++,size); |
a687059c |
98 | # else |
99 | if (debug & 128) |
100 | fprintf(stderr,"0x%lx: (%05d) malloc %d bytes\n",ptr,an++,size); |
101 | # endif |
8d063cd8 |
102 | #endif |
103 | if (ptr != Nullch) |
104 | return ptr; |
105 | else { |
34de22dd |
106 | fputs(nomem,stderr) FLUSH; |
8d063cd8 |
107 | exit(1); |
108 | } |
109 | /*NOTREACHED*/ |
a687059c |
110 | #ifdef lint |
111 | return ptr; |
112 | #endif |
8d063cd8 |
113 | } |
114 | |
115 | /* paranoid version of realloc */ |
116 | |
117 | char * |
118 | saferealloc(where,size) |
119 | char *where; |
62b28dd9 |
120 | #ifndef MSDOS |
8d063cd8 |
121 | MEM_SIZE size; |
62b28dd9 |
122 | #else |
123 | unsigned long size; |
124 | #endif /* MSDOS */ |
8d063cd8 |
125 | { |
126 | char *ptr; |
d48672a2 |
127 | #ifndef STANDARD_C |
8d063cd8 |
128 | char *realloc(); |
d48672a2 |
129 | #endif /* ! STANDARD_C */ |
8d063cd8 |
130 | |
62b28dd9 |
131 | #ifdef MSDOS |
132 | if (size > 0xffff) { |
133 | fprintf(stderr, "Reallocation too large: %lx\n", size) FLUSH; |
134 | exit(1); |
135 | } |
136 | #endif /* MSDOS */ |
378cc40b |
137 | if (!where) |
138 | fatal("Null realloc"); |
34de22dd |
139 | #ifdef DEBUGGING |
140 | if ((long)size < 0) |
141 | fatal("panic: realloc"); |
142 | #endif |
8d063cd8 |
143 | ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */ |
144 | #ifdef DEBUGGING |
a687059c |
145 | # ifndef I286 |
8d063cd8 |
146 | if (debug & 128) { |
147 | fprintf(stderr,"0x%x: (%05d) rfree\n",where,an++); |
148 | fprintf(stderr,"0x%x: (%05d) realloc %d bytes\n",ptr,an++,size); |
149 | } |
a687059c |
150 | # else |
151 | if (debug & 128) { |
152 | fprintf(stderr,"0x%lx: (%05d) rfree\n",where,an++); |
153 | fprintf(stderr,"0x%lx: (%05d) realloc %d bytes\n",ptr,an++,size); |
154 | } |
155 | # endif |
8d063cd8 |
156 | #endif |
157 | if (ptr != Nullch) |
158 | return ptr; |
159 | else { |
34de22dd |
160 | fputs(nomem,stderr) FLUSH; |
8d063cd8 |
161 | exit(1); |
162 | } |
163 | /*NOTREACHED*/ |
a687059c |
164 | #ifdef lint |
165 | return ptr; |
166 | #endif |
8d063cd8 |
167 | } |
168 | |
169 | /* safe version of free */ |
170 | |
a687059c |
171 | void |
8d063cd8 |
172 | safefree(where) |
173 | char *where; |
174 | { |
175 | #ifdef DEBUGGING |
a687059c |
176 | # ifndef I286 |
8d063cd8 |
177 | if (debug & 128) |
178 | fprintf(stderr,"0x%x: (%05d) free\n",where,an++); |
a687059c |
179 | # else |
180 | if (debug & 128) |
181 | fprintf(stderr,"0x%lx: (%05d) free\n",where,an++); |
182 | # endif |
8d063cd8 |
183 | #endif |
378cc40b |
184 | if (where) { |
de3bb511 |
185 | /*SUPPRESS 701*/ |
378cc40b |
186 | free(where); |
187 | } |
8d063cd8 |
188 | } |
189 | |
de3bb511 |
190 | #endif /* !safemalloc */ |
191 | |
a687059c |
192 | #ifdef LEAKTEST |
193 | |
194 | #define ALIGN sizeof(long) |
8d063cd8 |
195 | |
196 | char * |
a687059c |
197 | safexmalloc(x,size) |
198 | int x; |
199 | MEM_SIZE size; |
8d063cd8 |
200 | { |
a687059c |
201 | register char *where; |
8d063cd8 |
202 | |
a687059c |
203 | where = safemalloc(size + ALIGN); |
204 | xcount[x]++; |
205 | where[0] = x % 100; |
206 | where[1] = x / 100; |
207 | return where + ALIGN; |
8d063cd8 |
208 | } |
8d063cd8 |
209 | |
210 | char * |
a687059c |
211 | safexrealloc(where,size) |
212 | char *where; |
213 | MEM_SIZE size; |
214 | { |
215 | return saferealloc(where - ALIGN, size + ALIGN) + ALIGN; |
216 | } |
217 | |
218 | void |
219 | safexfree(where) |
220 | char *where; |
221 | { |
222 | int x; |
223 | |
224 | if (!where) |
225 | return; |
226 | where -= ALIGN; |
227 | x = where[0] + 100 * where[1]; |
228 | xcount[x]--; |
229 | safefree(where); |
230 | } |
231 | |
232 | xstat() |
8d063cd8 |
233 | { |
a687059c |
234 | register int i; |
8d063cd8 |
235 | |
a687059c |
236 | for (i = 0; i < MAXXCOUNT; i++) { |
de3bb511 |
237 | if (xcount[i] > lastxcount[i]) { |
a687059c |
238 | fprintf(stderr,"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]); |
239 | lastxcount[i] = xcount[i]; |
8d063cd8 |
240 | } |
241 | } |
8d063cd8 |
242 | } |
a687059c |
243 | |
244 | #endif /* LEAKTEST */ |
8d063cd8 |
245 | |
246 | /* copy a string up to some (non-backslashed) delimiter, if any */ |
247 | |
248 | char * |
a687059c |
249 | cpytill(to,from,fromend,delim,retlen) |
62b28dd9 |
250 | register char *to; |
251 | register char *from; |
a687059c |
252 | register char *fromend; |
8d063cd8 |
253 | register int delim; |
a687059c |
254 | int *retlen; |
8d063cd8 |
255 | { |
a687059c |
256 | char *origto = to; |
257 | |
258 | for (; from < fromend; from++,to++) { |
378cc40b |
259 | if (*from == '\\') { |
260 | if (from[1] == delim) |
261 | from++; |
262 | else if (from[1] == '\\') |
263 | *to++ = *from++; |
264 | } |
8d063cd8 |
265 | else if (*from == delim) |
266 | break; |
267 | *to = *from; |
268 | } |
269 | *to = '\0'; |
a687059c |
270 | *retlen = to - origto; |
8d063cd8 |
271 | return from; |
272 | } |
273 | |
274 | /* return ptr to little string in big string, NULL if not found */ |
378cc40b |
275 | /* This routine was donated by Corey Satten. */ |
8d063cd8 |
276 | |
277 | char * |
278 | instr(big, little) |
378cc40b |
279 | register char *big; |
280 | register char *little; |
281 | { |
282 | register char *s, *x; |
a687059c |
283 | register int first; |
378cc40b |
284 | |
a687059c |
285 | if (!little) |
286 | return big; |
287 | first = *little++; |
378cc40b |
288 | if (!first) |
289 | return big; |
290 | while (*big) { |
291 | if (*big++ != first) |
292 | continue; |
293 | for (x=big,s=little; *s; /**/ ) { |
294 | if (!*x) |
295 | return Nullch; |
296 | if (*s++ != *x++) { |
297 | s--; |
298 | break; |
299 | } |
300 | } |
301 | if (!*s) |
302 | return big-1; |
303 | } |
304 | return Nullch; |
305 | } |
8d063cd8 |
306 | |
a687059c |
307 | /* same as instr but allow embedded nulls */ |
308 | |
309 | char * |
310 | ninstr(big, bigend, little, lend) |
311 | register char *big; |
312 | register char *bigend; |
313 | char *little; |
314 | char *lend; |
8d063cd8 |
315 | { |
a687059c |
316 | register char *s, *x; |
317 | register int first = *little; |
318 | register char *littleend = lend; |
378cc40b |
319 | |
a687059c |
320 | if (!first && little > littleend) |
321 | return big; |
de3bb511 |
322 | if (bigend - big < littleend - little) |
323 | return Nullch; |
a687059c |
324 | bigend -= littleend - little++; |
325 | while (big <= bigend) { |
326 | if (*big++ != first) |
327 | continue; |
328 | for (x=big,s=little; s < littleend; /**/ ) { |
329 | if (*s++ != *x++) { |
330 | s--; |
331 | break; |
332 | } |
333 | } |
334 | if (s >= littleend) |
335 | return big-1; |
378cc40b |
336 | } |
a687059c |
337 | return Nullch; |
338 | } |
339 | |
340 | /* reverse of the above--find last substring */ |
341 | |
342 | char * |
343 | rninstr(big, bigend, little, lend) |
344 | register char *big; |
345 | char *bigend; |
346 | char *little; |
347 | char *lend; |
348 | { |
349 | register char *bigbeg; |
350 | register char *s, *x; |
351 | register int first = *little; |
352 | register char *littleend = lend; |
353 | |
354 | if (!first && little > littleend) |
355 | return bigend; |
356 | bigbeg = big; |
357 | big = bigend - (littleend - little++); |
358 | while (big >= bigbeg) { |
359 | if (*big-- != first) |
360 | continue; |
361 | for (x=big+2,s=little; s < littleend; /**/ ) { |
362 | if (*s++ != *x++) { |
363 | s--; |
364 | break; |
365 | } |
366 | } |
367 | if (s >= littleend) |
368 | return big+1; |
378cc40b |
369 | } |
a687059c |
370 | return Nullch; |
378cc40b |
371 | } |
a687059c |
372 | |
373 | unsigned char fold[] = { |
374 | 0, 1, 2, 3, 4, 5, 6, 7, |
375 | 8, 9, 10, 11, 12, 13, 14, 15, |
376 | 16, 17, 18, 19, 20, 21, 22, 23, |
377 | 24, 25, 26, 27, 28, 29, 30, 31, |
378 | 32, 33, 34, 35, 36, 37, 38, 39, |
379 | 40, 41, 42, 43, 44, 45, 46, 47, |
380 | 48, 49, 50, 51, 52, 53, 54, 55, |
381 | 56, 57, 58, 59, 60, 61, 62, 63, |
382 | 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', |
383 | 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', |
384 | 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', |
385 | 'x', 'y', 'z', 91, 92, 93, 94, 95, |
386 | 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G', |
387 | 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', |
388 | 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', |
389 | 'X', 'Y', 'Z', 123, 124, 125, 126, 127, |
390 | 128, 129, 130, 131, 132, 133, 134, 135, |
391 | 136, 137, 138, 139, 140, 141, 142, 143, |
392 | 144, 145, 146, 147, 148, 149, 150, 151, |
393 | 152, 153, 154, 155, 156, 157, 158, 159, |
394 | 160, 161, 162, 163, 164, 165, 166, 167, |
395 | 168, 169, 170, 171, 172, 173, 174, 175, |
396 | 176, 177, 178, 179, 180, 181, 182, 183, |
397 | 184, 185, 186, 187, 188, 189, 190, 191, |
398 | 192, 193, 194, 195, 196, 197, 198, 199, |
399 | 200, 201, 202, 203, 204, 205, 206, 207, |
400 | 208, 209, 210, 211, 212, 213, 214, 215, |
401 | 216, 217, 218, 219, 220, 221, 222, 223, |
402 | 224, 225, 226, 227, 228, 229, 230, 231, |
403 | 232, 233, 234, 235, 236, 237, 238, 239, |
404 | 240, 241, 242, 243, 244, 245, 246, 247, |
405 | 248, 249, 250, 251, 252, 253, 254, 255 |
406 | }; |
378cc40b |
407 | |
408 | static unsigned char freq[] = { |
409 | 1, 2, 84, 151, 154, 155, 156, 157, |
410 | 165, 246, 250, 3, 158, 7, 18, 29, |
411 | 40, 51, 62, 73, 85, 96, 107, 118, |
412 | 129, 140, 147, 148, 149, 150, 152, 153, |
413 | 255, 182, 224, 205, 174, 176, 180, 217, |
414 | 233, 232, 236, 187, 235, 228, 234, 226, |
415 | 222, 219, 211, 195, 188, 193, 185, 184, |
416 | 191, 183, 201, 229, 181, 220, 194, 162, |
417 | 163, 208, 186, 202, 200, 218, 198, 179, |
418 | 178, 214, 166, 170, 207, 199, 209, 206, |
419 | 204, 160, 212, 216, 215, 192, 175, 173, |
420 | 243, 172, 161, 190, 203, 189, 164, 230, |
421 | 167, 248, 227, 244, 242, 255, 241, 231, |
422 | 240, 253, 169, 210, 245, 237, 249, 247, |
423 | 239, 168, 252, 251, 254, 238, 223, 221, |
424 | 213, 225, 177, 197, 171, 196, 159, 4, |
425 | 5, 6, 8, 9, 10, 11, 12, 13, |
426 | 14, 15, 16, 17, 19, 20, 21, 22, |
427 | 23, 24, 25, 26, 27, 28, 30, 31, |
428 | 32, 33, 34, 35, 36, 37, 38, 39, |
429 | 41, 42, 43, 44, 45, 46, 47, 48, |
430 | 49, 50, 52, 53, 54, 55, 56, 57, |
431 | 58, 59, 60, 61, 63, 64, 65, 66, |
432 | 67, 68, 69, 70, 71, 72, 74, 75, |
433 | 76, 77, 78, 79, 80, 81, 82, 83, |
434 | 86, 87, 88, 89, 90, 91, 92, 93, |
435 | 94, 95, 97, 98, 99, 100, 101, 102, |
436 | 103, 104, 105, 106, 108, 109, 110, 111, |
437 | 112, 113, 114, 115, 116, 117, 119, 120, |
438 | 121, 122, 123, 124, 125, 126, 127, 128, |
439 | 130, 131, 132, 133, 134, 135, 136, 137, |
440 | 138, 139, 141, 142, 143, 144, 145, 146 |
441 | }; |
8d063cd8 |
442 | |
378cc40b |
443 | void |
a687059c |
444 | fbmcompile(str, iflag) |
378cc40b |
445 | STR *str; |
a687059c |
446 | int iflag; |
378cc40b |
447 | { |
a687059c |
448 | register unsigned char *s; |
449 | register unsigned char *table; |
de3bb511 |
450 | register unsigned int i; |
451 | register unsigned int len = str->str_cur; |
378cc40b |
452 | int rarest = 0; |
20188a90 |
453 | unsigned int frequency = 256; |
378cc40b |
454 | |
62b28dd9 |
455 | Str_Grow(str,len+258); |
a687059c |
456 | #ifndef lint |
457 | table = (unsigned char*)(str->str_ptr + len + 1); |
458 | #else |
459 | table = Null(unsigned char*); |
460 | #endif |
461 | s = table - 2; |
462 | for (i = 0; i < 256; i++) { |
378cc40b |
463 | table[i] = len; |
464 | } |
465 | i = 0; |
a687059c |
466 | #ifndef lint |
467 | while (s >= (unsigned char*)(str->str_ptr)) |
468 | #endif |
469 | { |
470 | if (table[*s] == len) { |
471 | #ifndef pdp11 |
472 | if (iflag) |
473 | table[*s] = table[fold[*s]] = i; |
474 | #else |
475 | if (iflag) { |
476 | int j; |
477 | j = fold[*s]; |
478 | table[j] = i; |
479 | table[*s] = i; |
480 | } |
481 | #endif /* pdp11 */ |
482 | else |
483 | table[*s] = i; |
484 | } |
378cc40b |
485 | s--,i++; |
486 | } |
a687059c |
487 | str->str_pok |= SP_FBM; /* deep magic */ |
378cc40b |
488 | |
a687059c |
489 | #ifndef lint |
490 | s = (unsigned char*)(str->str_ptr); /* deeper magic */ |
491 | #else |
492 | s = Null(unsigned char*); |
493 | #endif |
494 | if (iflag) { |
20188a90 |
495 | register unsigned int tmp, foldtmp; |
a687059c |
496 | str->str_pok |= SP_CASEFOLD; |
497 | for (i = 0; i < len; i++) { |
498 | tmp=freq[s[i]]; |
499 | foldtmp=freq[fold[s[i]]]; |
500 | if (tmp < frequency && foldtmp < frequency) { |
501 | rarest = i; |
502 | /* choose most frequent among the two */ |
503 | frequency = (tmp > foldtmp) ? tmp : foldtmp; |
504 | } |
505 | } |
506 | } |
507 | else { |
508 | for (i = 0; i < len; i++) { |
509 | if (freq[s[i]] < frequency) { |
510 | rarest = i; |
511 | frequency = freq[s[i]]; |
512 | } |
378cc40b |
513 | } |
514 | } |
515 | str->str_rare = s[rarest]; |
a687059c |
516 | str->str_state = rarest; |
378cc40b |
517 | #ifdef DEBUGGING |
518 | if (debug & 512) |
a687059c |
519 | fprintf(stderr,"rarest char %c at %d\n",str->str_rare, str->str_state); |
378cc40b |
520 | #endif |
521 | } |
522 | |
378cc40b |
523 | char * |
524 | fbminstr(big, bigend, littlestr) |
a687059c |
525 | unsigned char *big; |
526 | register unsigned char *bigend; |
378cc40b |
527 | STR *littlestr; |
528 | { |
a687059c |
529 | register unsigned char *s; |
378cc40b |
530 | register int tmp; |
531 | register int littlelen; |
a687059c |
532 | register unsigned char *little; |
533 | register unsigned char *table; |
534 | register unsigned char *olds; |
535 | register unsigned char *oldlittle; |
378cc40b |
536 | |
a687059c |
537 | #ifndef lint |
d48672a2 |
538 | if (!(littlestr->str_pok & SP_FBM)) { |
539 | if (!littlestr->str_ptr) |
540 | return (char*)big; |
9f68db38 |
541 | return ninstr((char*)big,(char*)bigend, |
542 | littlestr->str_ptr, littlestr->str_ptr + littlestr->str_cur); |
d48672a2 |
543 | } |
a687059c |
544 | #endif |
378cc40b |
545 | |
546 | littlelen = littlestr->str_cur; |
a687059c |
547 | #ifndef lint |
548 | if (littlestr->str_pok & SP_TAIL && !multiline) { /* tail anchored? */ |
0f85fab0 |
549 | if (littlelen > bigend - big) |
550 | return Nullch; |
a687059c |
551 | little = (unsigned char*)littlestr->str_ptr; |
552 | if (littlestr->str_pok & SP_CASEFOLD) { /* oops, fake it */ |
553 | big = bigend - littlelen; /* just start near end */ |
554 | if (bigend[-1] == '\n' && little[littlelen-1] != '\n') |
555 | big--; |
378cc40b |
556 | } |
557 | else { |
a687059c |
558 | s = bigend - littlelen; |
559 | if (*s == *little && bcmp(s,little,littlelen)==0) |
560 | return (char*)s; /* how sweet it is */ |
34de22dd |
561 | else if (bigend[-1] == '\n' && little[littlelen-1] != '\n' |
562 | && s > big) { |
a687059c |
563 | s--; |
564 | if (*s == *little && bcmp(s,little,littlelen)==0) |
565 | return (char*)s; |
566 | } |
567 | return Nullch; |
568 | } |
569 | } |
570 | table = (unsigned char*)(littlestr->str_ptr + littlelen + 1); |
571 | #else |
572 | table = Null(unsigned char*); |
573 | #endif |
62b28dd9 |
574 | if (--littlelen >= bigend - big) |
575 | return Nullch; |
576 | s = big + littlelen; |
a687059c |
577 | oldlittle = little = table - 2; |
578 | if (littlestr->str_pok & SP_CASEFOLD) { /* case insensitive? */ |
20188a90 |
579 | if (s < bigend) { |
a687059c |
580 | top1: |
de3bb511 |
581 | /*SUPPRESS 560*/ |
a687059c |
582 | if (tmp = table[*s]) { |
62b28dd9 |
583 | #ifdef POINTERRIGOR |
584 | if (bigend - s > tmp) { |
585 | s += tmp; |
586 | goto top1; |
587 | } |
588 | #else |
589 | if ((s += tmp) < bigend) |
590 | goto top1; |
591 | #endif |
592 | return Nullch; |
a687059c |
593 | } |
594 | else { |
595 | tmp = littlelen; /* less expensive than calling strncmp() */ |
596 | olds = s; |
597 | while (tmp--) { |
598 | if (*--s == *--little || fold[*s] == *little) |
599 | continue; |
600 | s = olds + 1; /* here we pay the price for failure */ |
601 | little = oldlittle; |
602 | if (s < bigend) /* fake up continue to outer loop */ |
603 | goto top1; |
604 | return Nullch; |
605 | } |
606 | #ifndef lint |
607 | return (char *)s; |
608 | #endif |
609 | } |
610 | } |
611 | } |
612 | else { |
20188a90 |
613 | if (s < bigend) { |
a687059c |
614 | top2: |
de3bb511 |
615 | /*SUPPRESS 560*/ |
a687059c |
616 | if (tmp = table[*s]) { |
62b28dd9 |
617 | #ifdef POINTERRIGOR |
618 | if (bigend - s > tmp) { |
619 | s += tmp; |
620 | goto top2; |
621 | } |
622 | #else |
623 | if ((s += tmp) < bigend) |
624 | goto top2; |
625 | #endif |
626 | return Nullch; |
a687059c |
627 | } |
628 | else { |
629 | tmp = littlelen; /* less expensive than calling strncmp() */ |
630 | olds = s; |
631 | while (tmp--) { |
632 | if (*--s == *--little) |
633 | continue; |
634 | s = olds + 1; /* here we pay the price for failure */ |
635 | little = oldlittle; |
636 | if (s < bigend) /* fake up continue to outer loop */ |
637 | goto top2; |
638 | return Nullch; |
639 | } |
640 | #ifndef lint |
641 | return (char *)s; |
642 | #endif |
378cc40b |
643 | } |
378cc40b |
644 | } |
645 | } |
646 | return Nullch; |
647 | } |
648 | |
649 | char * |
650 | screaminstr(bigstr, littlestr) |
651 | STR *bigstr; |
652 | STR *littlestr; |
653 | { |
a687059c |
654 | register unsigned char *s, *x; |
655 | register unsigned char *big; |
378cc40b |
656 | register int pos; |
657 | register int previous; |
658 | register int first; |
a687059c |
659 | register unsigned char *little; |
660 | register unsigned char *bigend; |
661 | register unsigned char *littleend; |
378cc40b |
662 | |
663 | if ((pos = screamfirst[littlestr->str_rare]) < 0) |
664 | return Nullch; |
a687059c |
665 | #ifndef lint |
666 | little = (unsigned char *)(littlestr->str_ptr); |
667 | #else |
668 | little = Null(unsigned char *); |
669 | #endif |
670 | littleend = little + littlestr->str_cur; |
378cc40b |
671 | first = *little++; |
a687059c |
672 | previous = littlestr->str_state; |
673 | #ifndef lint |
674 | big = (unsigned char *)(bigstr->str_ptr); |
675 | #else |
676 | big = Null(unsigned char*); |
677 | #endif |
678 | bigend = big + bigstr->str_cur; |
378cc40b |
679 | while (pos < previous) { |
a687059c |
680 | #ifndef lint |
378cc40b |
681 | if (!(pos += screamnext[pos])) |
a687059c |
682 | #endif |
378cc40b |
683 | return Nullch; |
684 | } |
de3bb511 |
685 | #ifdef POINTERRIGOR |
a687059c |
686 | if (littlestr->str_pok & SP_CASEFOLD) { /* case insignificant? */ |
687 | do { |
de3bb511 |
688 | #ifndef lint |
689 | while (big[pos-previous] != first && big[pos-previous] != fold[first] |
690 | && (pos += screamnext[pos]) ) |
691 | /*SUPPRESS 530*/ |
692 | ; |
693 | #endif |
694 | for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) { |
695 | if (x >= bigend) |
696 | return Nullch; |
697 | if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) { |
698 | s--; |
699 | break; |
700 | } |
701 | } |
702 | if (s == littleend) |
703 | #ifndef lint |
704 | return (char *)(big+pos-previous); |
705 | #else |
706 | return Nullch; |
707 | #endif |
708 | } while ( |
709 | #ifndef lint |
710 | pos += screamnext[pos] /* does this goof up anywhere? */ |
711 | #else |
712 | pos += screamnext[0] |
713 | #endif |
714 | ); |
715 | } |
716 | else { |
717 | do { |
718 | #ifndef lint |
719 | while (big[pos-previous] != first && (pos += screamnext[pos])) |
720 | /*SUPPRESS 530*/ |
721 | ; |
722 | #endif |
723 | for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) { |
724 | if (x >= bigend) |
725 | return Nullch; |
726 | if (*s++ != *x++) { |
727 | s--; |
728 | break; |
729 | } |
730 | } |
731 | if (s == littleend) |
732 | #ifndef lint |
733 | return (char *)(big+pos-previous); |
734 | #else |
735 | return Nullch; |
736 | #endif |
737 | } while ( |
738 | #ifndef lint |
739 | pos += screamnext[pos] |
740 | #else |
741 | pos += screamnext[0] |
742 | #endif |
743 | ); |
744 | } |
745 | #else /* !POINTERRIGOR */ |
746 | big -= previous; |
747 | if (littlestr->str_pok & SP_CASEFOLD) { /* case insignificant? */ |
748 | do { |
749 | #ifndef lint |
750 | while (big[pos] != first && big[pos] != fold[first] |
751 | && (pos += screamnext[pos]) ) |
752 | /*SUPPRESS 530*/ |
753 | ; |
754 | #endif |
a687059c |
755 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { |
756 | if (x >= bigend) |
757 | return Nullch; |
758 | if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) { |
759 | s--; |
760 | break; |
761 | } |
762 | } |
763 | if (s == littleend) |
764 | #ifndef lint |
765 | return (char *)(big+pos); |
766 | #else |
8d063cd8 |
767 | return Nullch; |
a687059c |
768 | #endif |
769 | } while ( |
770 | #ifndef lint |
771 | pos += screamnext[pos] /* does this goof up anywhere? */ |
772 | #else |
773 | pos += screamnext[0] |
774 | #endif |
775 | ); |
776 | } |
777 | else { |
778 | do { |
de3bb511 |
779 | #ifndef lint |
780 | while (big[pos] != first && (pos += screamnext[pos])) |
781 | /*SUPPRESS 530*/ |
782 | ; |
783 | #endif |
a687059c |
784 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { |
785 | if (x >= bigend) |
786 | return Nullch; |
787 | if (*s++ != *x++) { |
788 | s--; |
789 | break; |
790 | } |
378cc40b |
791 | } |
a687059c |
792 | if (s == littleend) |
793 | #ifndef lint |
794 | return (char *)(big+pos); |
795 | #else |
796 | return Nullch; |
797 | #endif |
798 | } while ( |
799 | #ifndef lint |
800 | pos += screamnext[pos] |
801 | #else |
802 | pos += screamnext[0] |
803 | #endif |
804 | ); |
805 | } |
de3bb511 |
806 | #endif /* POINTERRIGOR */ |
8d063cd8 |
807 | return Nullch; |
808 | } |
809 | |
810 | /* copy a string to a safe spot */ |
811 | |
812 | char * |
813 | savestr(str) |
814 | char *str; |
815 | { |
a687059c |
816 | register char *newaddr; |
8d063cd8 |
817 | |
a687059c |
818 | New(902,newaddr,strlen(str)+1,char); |
8d063cd8 |
819 | (void)strcpy(newaddr,str); |
820 | return newaddr; |
821 | } |
822 | |
a687059c |
823 | /* same thing but with a known length */ |
824 | |
825 | char * |
826 | nsavestr(str, len) |
827 | char *str; |
828 | register int len; |
829 | { |
830 | register char *newaddr; |
831 | |
832 | New(903,newaddr,len+1,char); |
833 | (void)bcopy(str,newaddr,len); /* might not be null terminated */ |
834 | newaddr[len] = '\0'; /* is now */ |
835 | return newaddr; |
836 | } |
837 | |
8d063cd8 |
838 | /* grow a static string to at least a certain length */ |
839 | |
840 | void |
841 | growstr(strptr,curlen,newlen) |
842 | char **strptr; |
843 | int *curlen; |
844 | int newlen; |
845 | { |
846 | if (newlen > *curlen) { /* need more room? */ |
847 | if (*curlen) |
a687059c |
848 | Renew(*strptr,newlen,char); |
8d063cd8 |
849 | else |
a687059c |
850 | New(905,*strptr,newlen,char); |
8d063cd8 |
851 | *curlen = newlen; |
852 | } |
853 | } |
854 | |
35c8bce7 |
855 | #ifndef I_VARARGS |
378cc40b |
856 | /*VARARGS1*/ |
857 | mess(pat,a1,a2,a3,a4) |
858 | char *pat; |
a687059c |
859 | long a1, a2, a3, a4; |
378cc40b |
860 | { |
861 | char *s; |
de3bb511 |
862 | int usermess = strEQ(pat,"%s"); |
863 | STR *tmpstr; |
378cc40b |
864 | |
a687059c |
865 | s = buf; |
de3bb511 |
866 | if (usermess) { |
867 | tmpstr = str_mortal(&str_undef); |
868 | str_set(tmpstr, (char*)a1); |
869 | *s++ = tmpstr->str_ptr[tmpstr->str_cur-1]; |
870 | } |
871 | else { |
872 | (void)sprintf(s,pat,a1,a2,a3,a4); |
873 | s += strlen(s); |
874 | } |
875 | |
378cc40b |
876 | if (s[-1] != '\n') { |
62b28dd9 |
877 | if (curcmd->c_line) { |
20188a90 |
878 | (void)sprintf(s," at %s line %ld", |
879 | stab_val(curcmd->c_filestab)->str_ptr, (long)curcmd->c_line); |
378cc40b |
880 | s += strlen(s); |
881 | } |
882 | if (last_in_stab && |
a687059c |
883 | stab_io(last_in_stab) && |
884 | stab_io(last_in_stab)->lines ) { |
885 | (void)sprintf(s,", <%s> line %ld", |
886 | last_in_stab == argvstab ? "" : stab_name(last_in_stab), |
887 | (long)stab_io(last_in_stab)->lines); |
378cc40b |
888 | s += strlen(s); |
889 | } |
a687059c |
890 | (void)strcpy(s,".\n"); |
de3bb511 |
891 | if (usermess) |
892 | str_cat(tmpstr,buf+1); |
378cc40b |
893 | } |
de3bb511 |
894 | if (usermess) |
895 | return tmpstr->str_ptr; |
896 | else |
897 | return buf; |
378cc40b |
898 | } |
899 | |
8d063cd8 |
900 | /*VARARGS1*/ |
901 | fatal(pat,a1,a2,a3,a4) |
902 | char *pat; |
a687059c |
903 | long a1, a2, a3, a4; |
8d063cd8 |
904 | { |
905 | extern FILE *e_fp; |
906 | extern char *e_tmpname; |
9f68db38 |
907 | char *tmps; |
de3bb511 |
908 | char *message; |
8d063cd8 |
909 | |
de3bb511 |
910 | message = mess(pat,a1,a2,a3,a4); |
a559c259 |
911 | if (in_eval) { |
de3bb511 |
912 | str_set(stab_val(stabent("@",TRUE)),message); |
9f68db38 |
913 | tmps = "_EVAL_"; |
914 | while (loop_ptr >= 0 && (!loop_stack[loop_ptr].loop_label || |
915 | strNE(tmps,loop_stack[loop_ptr].loop_label) )) { |
916 | #ifdef DEBUGGING |
917 | if (debug & 4) { |
918 | deb("(Skipping label #%d %s)\n",loop_ptr, |
919 | loop_stack[loop_ptr].loop_label); |
920 | } |
921 | #endif |
922 | loop_ptr--; |
923 | } |
924 | #ifdef DEBUGGING |
925 | if (debug & 4) { |
926 | deb("(Found label #%d %s)\n",loop_ptr, |
927 | loop_stack[loop_ptr].loop_label); |
928 | } |
929 | #endif |
930 | if (loop_ptr < 0) { |
931 | in_eval = 0; |
932 | fatal("Bad label: %s", tmps); |
933 | } |
934 | longjmp(loop_stack[loop_ptr].loop_env, 1); |
a559c259 |
935 | } |
de3bb511 |
936 | fputs(message,stderr); |
a687059c |
937 | (void)fflush(stderr); |
8d063cd8 |
938 | if (e_fp) |
a687059c |
939 | (void)UNLINK(e_tmpname); |
378cc40b |
940 | statusvalue >>= 8; |
27e2fb84 |
941 | exit((int)((errno&255)?errno:((statusvalue&255)?statusvalue:255))); |
378cc40b |
942 | } |
943 | |
944 | /*VARARGS1*/ |
945 | warn(pat,a1,a2,a3,a4) |
946 | char *pat; |
a687059c |
947 | long a1, a2, a3, a4; |
378cc40b |
948 | { |
de3bb511 |
949 | char *message; |
950 | |
951 | message = mess(pat,a1,a2,a3,a4); |
952 | fputs(message,stderr); |
a687059c |
953 | #ifdef LEAKTEST |
954 | #ifdef DEBUGGING |
955 | if (debug & 4096) |
956 | xstat(); |
957 | #endif |
958 | #endif |
959 | (void)fflush(stderr); |
8d063cd8 |
960 | } |
a687059c |
961 | #else |
962 | /*VARARGS0*/ |
de3bb511 |
963 | char * |
a687059c |
964 | mess(args) |
965 | va_list args; |
966 | { |
967 | char *pat; |
968 | char *s; |
de3bb511 |
969 | STR *tmpstr; |
970 | int usermess; |
d48672a2 |
971 | #ifndef HAS_VPRINTF |
a687059c |
972 | #ifdef CHARVSPRINTF |
973 | char *vsprintf(); |
974 | #else |
975 | int vsprintf(); |
976 | #endif |
d48672a2 |
977 | #endif |
a687059c |
978 | |
a687059c |
979 | #ifdef lint |
980 | pat = Nullch; |
981 | #else |
982 | pat = va_arg(args, char *); |
983 | #endif |
de3bb511 |
984 | s = buf; |
985 | usermess = strEQ(pat, "%s"); |
986 | if (usermess) { |
987 | tmpstr = str_mortal(&str_undef); |
988 | str_set(tmpstr, va_arg(args, char *)); |
989 | *s++ = tmpstr->str_ptr[tmpstr->str_cur-1]; |
990 | } |
991 | else { |
992 | (void) vsprintf(s,pat,args); |
993 | s += strlen(s); |
994 | } |
a687059c |
995 | |
a687059c |
996 | if (s[-1] != '\n') { |
62b28dd9 |
997 | if (curcmd->c_line) { |
20188a90 |
998 | (void)sprintf(s," at %s line %ld", |
999 | stab_val(curcmd->c_filestab)->str_ptr, (long)curcmd->c_line); |
a687059c |
1000 | s += strlen(s); |
1001 | } |
1002 | if (last_in_stab && |
1003 | stab_io(last_in_stab) && |
1004 | stab_io(last_in_stab)->lines ) { |
1005 | (void)sprintf(s,", <%s> line %ld", |
1006 | last_in_stab == argvstab ? "" : last_in_stab->str_magic->str_ptr, |
1007 | (long)stab_io(last_in_stab)->lines); |
1008 | s += strlen(s); |
1009 | } |
1010 | (void)strcpy(s,".\n"); |
de3bb511 |
1011 | if (usermess) |
1012 | str_cat(tmpstr,buf+1); |
a687059c |
1013 | } |
de3bb511 |
1014 | |
1015 | if (usermess) |
1016 | return tmpstr->str_ptr; |
1017 | else |
1018 | return buf; |
a687059c |
1019 | } |
1020 | |
1021 | /*VARARGS0*/ |
1022 | fatal(va_alist) |
1023 | va_dcl |
1024 | { |
1025 | va_list args; |
1026 | extern FILE *e_fp; |
1027 | extern char *e_tmpname; |
9f68db38 |
1028 | char *tmps; |
de3bb511 |
1029 | char *message; |
a687059c |
1030 | |
1031 | #ifndef lint |
1032 | va_start(args); |
1033 | #else |
1034 | args = 0; |
1035 | #endif |
de3bb511 |
1036 | message = mess(args); |
a687059c |
1037 | va_end(args); |
1038 | if (in_eval) { |
de3bb511 |
1039 | str_set(stab_val(stabent("@",TRUE)),message); |
9f68db38 |
1040 | tmps = "_EVAL_"; |
1041 | while (loop_ptr >= 0 && (!loop_stack[loop_ptr].loop_label || |
1042 | strNE(tmps,loop_stack[loop_ptr].loop_label) )) { |
1043 | #ifdef DEBUGGING |
1044 | if (debug & 4) { |
1045 | deb("(Skipping label #%d %s)\n",loop_ptr, |
1046 | loop_stack[loop_ptr].loop_label); |
1047 | } |
1048 | #endif |
1049 | loop_ptr--; |
1050 | } |
1051 | #ifdef DEBUGGING |
1052 | if (debug & 4) { |
1053 | deb("(Found label #%d %s)\n",loop_ptr, |
1054 | loop_stack[loop_ptr].loop_label); |
1055 | } |
1056 | #endif |
1057 | if (loop_ptr < 0) { |
1058 | in_eval = 0; |
1059 | fatal("Bad label: %s", tmps); |
1060 | } |
1061 | longjmp(loop_stack[loop_ptr].loop_env, 1); |
a687059c |
1062 | } |
de3bb511 |
1063 | fputs(message,stderr); |
a687059c |
1064 | (void)fflush(stderr); |
1065 | if (e_fp) |
1066 | (void)UNLINK(e_tmpname); |
1067 | statusvalue >>= 8; |
27e2fb84 |
1068 | exit((int)((errno&255)?errno:((statusvalue&255)?statusvalue:255))); |
a687059c |
1069 | } |
1070 | |
1071 | /*VARARGS0*/ |
1072 | warn(va_alist) |
1073 | va_dcl |
1074 | { |
1075 | va_list args; |
de3bb511 |
1076 | char *message; |
a687059c |
1077 | |
1078 | #ifndef lint |
1079 | va_start(args); |
1080 | #else |
1081 | args = 0; |
1082 | #endif |
de3bb511 |
1083 | message = mess(args); |
a687059c |
1084 | va_end(args); |
1085 | |
de3bb511 |
1086 | fputs(message,stderr); |
a687059c |
1087 | #ifdef LEAKTEST |
1088 | #ifdef DEBUGGING |
1089 | if (debug & 4096) |
1090 | xstat(); |
1091 | #endif |
1092 | #endif |
1093 | (void)fflush(stderr); |
1094 | } |
1095 | #endif |
8d063cd8 |
1096 | |
8d063cd8 |
1097 | void |
1098 | setenv(nam,val) |
1099 | char *nam, *val; |
1100 | { |
1101 | register int i=envix(nam); /* where does it go? */ |
1102 | |
fe14fcc3 |
1103 | if (environ == origenviron) { /* need we copy environment? */ |
1104 | int j; |
1105 | int max; |
1106 | char **tmpenv; |
1107 | |
de3bb511 |
1108 | /*SUPPRESS 530*/ |
fe14fcc3 |
1109 | for (max = i; environ[max]; max++) ; |
1110 | New(901,tmpenv, max+2, char*); |
1111 | for (j=0; j<max; j++) /* copy environment */ |
1112 | tmpenv[j] = savestr(environ[j]); |
1113 | tmpenv[max] = Nullch; |
1114 | environ = tmpenv; /* tell exec where it is now */ |
1115 | } |
a687059c |
1116 | if (!val) { |
1117 | while (environ[i]) { |
1118 | environ[i] = environ[i+1]; |
1119 | i++; |
1120 | } |
1121 | return; |
1122 | } |
8d063cd8 |
1123 | if (!environ[i]) { /* does not exist yet */ |
fe14fcc3 |
1124 | Renew(environ, i+2, char*); /* just expand it a bit */ |
8d063cd8 |
1125 | environ[i+1] = Nullch; /* make sure it's null terminated */ |
1126 | } |
fe14fcc3 |
1127 | else |
1128 | Safefree(environ[i]); |
a687059c |
1129 | New(904, environ[i], strlen(nam) + strlen(val) + 2, char); |
62b28dd9 |
1130 | #ifndef MSDOS |
a687059c |
1131 | (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */ |
62b28dd9 |
1132 | #else |
1133 | /* MS-DOS requires environment variable names to be in uppercase */ |
fe14fcc3 |
1134 | /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but |
1135 | * some utilities and applications may break because they only look |
1136 | * for upper case strings. (Fixed strupr() bug here.)] |
1137 | */ |
1138 | strcpy(environ[i],nam); strupr(environ[i]); |
62b28dd9 |
1139 | (void)sprintf(environ[i] + strlen(nam),"=%s",val); |
1140 | #endif /* MSDOS */ |
8d063cd8 |
1141 | } |
1142 | |
1143 | int |
1144 | envix(nam) |
1145 | char *nam; |
1146 | { |
1147 | register int i, len = strlen(nam); |
1148 | |
1149 | for (i = 0; environ[i]; i++) { |
1150 | if (strnEQ(environ[i],nam,len) && environ[i][len] == '=') |
1151 | break; /* strnEQ must come first to avoid */ |
1152 | } /* potential SEGV's */ |
1153 | return i; |
1154 | } |
378cc40b |
1155 | |
1156 | #ifdef EUNICE |
1157 | unlnk(f) /* unlink all versions of a file */ |
1158 | char *f; |
1159 | { |
1160 | int i; |
1161 | |
1162 | for (i = 0; unlink(f) >= 0; i++) ; |
1163 | return i ? 0 : -1; |
1164 | } |
1165 | #endif |
1166 | |
fe14fcc3 |
1167 | #ifndef HAS_MEMCPY |
1168 | #ifndef HAS_BCOPY |
378cc40b |
1169 | char * |
1170 | bcopy(from,to,len) |
1171 | register char *from; |
1172 | register char *to; |
1173 | register int len; |
1174 | { |
1175 | char *retval = to; |
1176 | |
1177 | while (len--) |
1178 | *to++ = *from++; |
1179 | return retval; |
1180 | } |
ffed7fef |
1181 | #endif |
378cc40b |
1182 | |
fe14fcc3 |
1183 | #ifndef HAS_BZERO |
378cc40b |
1184 | char * |
1185 | bzero(loc,len) |
1186 | register char *loc; |
1187 | register int len; |
1188 | { |
1189 | char *retval = loc; |
1190 | |
1191 | while (len--) |
1192 | *loc++ = 0; |
1193 | return retval; |
1194 | } |
1195 | #endif |
1196 | #endif |
a687059c |
1197 | |
35c8bce7 |
1198 | #ifdef I_VARARGS |
fe14fcc3 |
1199 | #ifndef HAS_VPRINTF |
a687059c |
1200 | |
1201 | #ifdef CHARVSPRINTF |
1202 | char * |
1203 | #else |
1204 | int |
1205 | #endif |
1206 | vsprintf(dest, pat, args) |
1207 | char *dest, *pat, *args; |
1208 | { |
1209 | FILE fakebuf; |
1210 | |
1211 | fakebuf._ptr = dest; |
1212 | fakebuf._cnt = 32767; |
35c8bce7 |
1213 | #ifndef _IOSTRG |
1214 | #define _IOSTRG 0 |
1215 | #endif |
a687059c |
1216 | fakebuf._flag = _IOWRT|_IOSTRG; |
1217 | _doprnt(pat, args, &fakebuf); /* what a kludge */ |
1218 | (void)putc('\0', &fakebuf); |
1219 | #ifdef CHARVSPRINTF |
1220 | return(dest); |
1221 | #else |
1222 | return 0; /* perl doesn't use return value */ |
1223 | #endif |
1224 | } |
1225 | |
1226 | #ifdef DEBUGGING |
1227 | int |
1228 | vfprintf(fd, pat, args) |
1229 | FILE *fd; |
1230 | char *pat, *args; |
1231 | { |
1232 | _doprnt(pat, args, fd); |
1233 | return 0; /* wrong, but perl doesn't use the return value */ |
1234 | } |
1235 | #endif |
fe14fcc3 |
1236 | #endif /* HAS_VPRINTF */ |
35c8bce7 |
1237 | #endif /* I_VARARGS */ |
a687059c |
1238 | |
1239 | #ifdef MYSWAP |
ffed7fef |
1240 | #if BYTEORDER != 0x4321 |
a687059c |
1241 | short |
1242 | my_swap(s) |
1243 | short s; |
1244 | { |
1245 | #if (BYTEORDER & 1) == 0 |
1246 | short result; |
1247 | |
1248 | result = ((s & 255) << 8) + ((s >> 8) & 255); |
1249 | return result; |
1250 | #else |
1251 | return s; |
1252 | #endif |
1253 | } |
1254 | |
1255 | long |
1256 | htonl(l) |
1257 | register long l; |
1258 | { |
1259 | union { |
1260 | long result; |
ffed7fef |
1261 | char c[sizeof(long)]; |
a687059c |
1262 | } u; |
1263 | |
ffed7fef |
1264 | #if BYTEORDER == 0x1234 |
a687059c |
1265 | u.c[0] = (l >> 24) & 255; |
1266 | u.c[1] = (l >> 16) & 255; |
1267 | u.c[2] = (l >> 8) & 255; |
1268 | u.c[3] = l & 255; |
1269 | return u.result; |
1270 | #else |
ffed7fef |
1271 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
a687059c |
1272 | fatal("Unknown BYTEORDER\n"); |
1273 | #else |
1274 | register int o; |
1275 | register int s; |
1276 | |
ffed7fef |
1277 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1278 | u.c[o & 0xf] = (l >> s) & 255; |
a687059c |
1279 | } |
1280 | return u.result; |
1281 | #endif |
1282 | #endif |
1283 | } |
1284 | |
1285 | long |
1286 | ntohl(l) |
1287 | register long l; |
1288 | { |
1289 | union { |
1290 | long l; |
ffed7fef |
1291 | char c[sizeof(long)]; |
a687059c |
1292 | } u; |
1293 | |
ffed7fef |
1294 | #if BYTEORDER == 0x1234 |
a687059c |
1295 | u.c[0] = (l >> 24) & 255; |
1296 | u.c[1] = (l >> 16) & 255; |
1297 | u.c[2] = (l >> 8) & 255; |
1298 | u.c[3] = l & 255; |
1299 | return u.l; |
1300 | #else |
ffed7fef |
1301 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
a687059c |
1302 | fatal("Unknown BYTEORDER\n"); |
1303 | #else |
1304 | register int o; |
1305 | register int s; |
1306 | |
1307 | u.l = l; |
1308 | l = 0; |
ffed7fef |
1309 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1310 | l |= (u.c[o & 0xf] & 255) << s; |
a687059c |
1311 | } |
1312 | return l; |
1313 | #endif |
1314 | #endif |
1315 | } |
1316 | |
ffed7fef |
1317 | #endif /* BYTEORDER != 0x4321 */ |
fe14fcc3 |
1318 | #endif /* HAS_HTONS */ |
a687059c |
1319 | |
0f85fab0 |
1320 | #ifndef MSDOS |
a687059c |
1321 | FILE * |
1322 | mypopen(cmd,mode) |
1323 | char *cmd; |
1324 | char *mode; |
1325 | { |
1326 | int p[2]; |
1327 | register int this, that; |
1328 | register int pid; |
1329 | STR *str; |
1330 | int doexec = strNE(cmd,"-"); |
1331 | |
1332 | if (pipe(p) < 0) |
1333 | return Nullfp; |
1334 | this = (*mode == 'w'); |
1335 | that = !this; |
d48672a2 |
1336 | #ifdef TAINT |
1337 | if (doexec) { |
1338 | taintenv(); |
1339 | taintproper("Insecure dependency in exec"); |
1340 | } |
1341 | #endif |
a687059c |
1342 | while ((pid = (doexec?vfork():fork())) < 0) { |
1343 | if (errno != EAGAIN) { |
1344 | close(p[this]); |
1345 | if (!doexec) |
1346 | fatal("Can't fork"); |
1347 | return Nullfp; |
1348 | } |
1349 | sleep(5); |
1350 | } |
1351 | if (pid == 0) { |
1352 | #define THIS that |
1353 | #define THAT this |
1354 | close(p[THAT]); |
1355 | if (p[THIS] != (*mode == 'r')) { |
1356 | dup2(p[THIS], *mode == 'r'); |
1357 | close(p[THIS]); |
1358 | } |
1359 | if (doexec) { |
d48672a2 |
1360 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) |
ae986130 |
1361 | int fd; |
1362 | |
1363 | #ifndef NOFILE |
1364 | #define NOFILE 20 |
1365 | #endif |
d48672a2 |
1366 | for (fd = maxsysfd + 1; fd < NOFILE; fd++) |
ae986130 |
1367 | close(fd); |
1368 | #endif |
a687059c |
1369 | do_exec(cmd); /* may or may not use the shell */ |
de3bb511 |
1370 | warn("Can't exec \"%s\": %s", cmd, strerror(errno)); |
a687059c |
1371 | _exit(1); |
1372 | } |
de3bb511 |
1373 | /*SUPPRESS 560*/ |
a687059c |
1374 | if (tmpstab = stabent("$",allstabs)) |
1375 | str_numset(STAB_STR(tmpstab),(double)getpid()); |
9f68db38 |
1376 | forkprocess = 0; |
fe14fcc3 |
1377 | hclear(pidstatus, FALSE); /* we have no children */ |
a687059c |
1378 | return Nullfp; |
1379 | #undef THIS |
1380 | #undef THAT |
1381 | } |
62b28dd9 |
1382 | do_execfree(); /* free any memory malloced by child on vfork */ |
a687059c |
1383 | close(p[that]); |
62b28dd9 |
1384 | if (p[that] < p[this]) { |
1385 | dup2(p[this], p[that]); |
1386 | close(p[this]); |
1387 | p[this] = p[that]; |
1388 | } |
20188a90 |
1389 | str = afetch(fdpid,p[this],TRUE); |
1390 | str->str_u.str_useful = pid; |
a687059c |
1391 | forkprocess = pid; |
1392 | return fdopen(p[this], mode); |
1393 | } |
0f85fab0 |
1394 | #endif /* !MSDOS */ |
a687059c |
1395 | |
ae986130 |
1396 | #ifdef NOTDEF |
1397 | dumpfds(s) |
1398 | char *s; |
1399 | { |
1400 | int fd; |
1401 | struct stat tmpstatbuf; |
1402 | |
1403 | fprintf(stderr,"%s", s); |
1404 | for (fd = 0; fd < 32; fd++) { |
1405 | if (fstat(fd,&tmpstatbuf) >= 0) |
1406 | fprintf(stderr," %d",fd); |
1407 | } |
1408 | fprintf(stderr,"\n"); |
1409 | } |
1410 | #endif |
1411 | |
fe14fcc3 |
1412 | #ifndef HAS_DUP2 |
a687059c |
1413 | dup2(oldfd,newfd) |
1414 | int oldfd; |
1415 | int newfd; |
1416 | { |
fe14fcc3 |
1417 | #if defined(HAS_FCNTL) && defined(F_DUPFD) |
62b28dd9 |
1418 | close(newfd); |
1419 | fcntl(oldfd, F_DUPFD, newfd); |
1420 | #else |
d48672a2 |
1421 | int fdtmp[256]; |
ae986130 |
1422 | int fdx = 0; |
1423 | int fd; |
1424 | |
fe14fcc3 |
1425 | if (oldfd == newfd) |
1426 | return 0; |
a687059c |
1427 | close(newfd); |
ae986130 |
1428 | while ((fd = dup(oldfd)) != newfd) /* good enough for low fd's */ |
1429 | fdtmp[fdx++] = fd; |
1430 | while (fdx > 0) |
1431 | close(fdtmp[--fdx]); |
62b28dd9 |
1432 | #endif |
a687059c |
1433 | } |
1434 | #endif |
1435 | |
0f85fab0 |
1436 | #ifndef MSDOS |
a687059c |
1437 | int |
1438 | mypclose(ptr) |
1439 | FILE *ptr; |
1440 | { |
a687059c |
1441 | #ifdef VOIDSIG |
1442 | void (*hstat)(), (*istat)(), (*qstat)(); |
1443 | #else |
1444 | int (*hstat)(), (*istat)(), (*qstat)(); |
1445 | #endif |
1446 | int status; |
1447 | STR *str; |
20188a90 |
1448 | int pid; |
a687059c |
1449 | |
20188a90 |
1450 | str = afetch(fdpid,fileno(ptr),TRUE); |
de3bb511 |
1451 | pid = (int)str->str_u.str_useful; |
20188a90 |
1452 | astore(fdpid,fileno(ptr),Nullstr); |
a687059c |
1453 | fclose(ptr); |
a687059c |
1454 | hstat = signal(SIGHUP, SIG_IGN); |
1455 | istat = signal(SIGINT, SIG_IGN); |
1456 | qstat = signal(SIGQUIT, SIG_IGN); |
20188a90 |
1457 | pid = wait4pid(pid, &status, 0); |
1458 | signal(SIGHUP, hstat); |
1459 | signal(SIGINT, istat); |
1460 | signal(SIGQUIT, qstat); |
1461 | return(pid < 0 ? pid : status); |
1462 | } |
1463 | |
1464 | int |
1465 | wait4pid(pid,statusp,flags) |
1466 | int pid; |
1467 | int *statusp; |
1468 | int flags; |
1469 | { |
de3bb511 |
1470 | #if !defined(HAS_WAIT4) && !defined(HAS_WAITPID) |
20188a90 |
1471 | int result; |
1472 | STR *str; |
1473 | char spid[16]; |
de3bb511 |
1474 | #endif |
20188a90 |
1475 | |
1476 | if (!pid) |
1477 | return -1; |
fe14fcc3 |
1478 | #ifdef HAS_WAIT4 |
1479 | return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *)); |
a687059c |
1480 | #else |
fe14fcc3 |
1481 | #ifdef HAS_WAITPID |
20188a90 |
1482 | return waitpid(pid,statusp,flags); |
1483 | #else |
1484 | if (pid > 0) { |
1485 | sprintf(spid, "%d", pid); |
e5d73d77 |
1486 | str = hfetch(pidstatus,spid,strlen(spid),FALSE); |
20188a90 |
1487 | if (str != &str_undef) { |
1488 | *statusp = (int)str->str_u.str_useful; |
e5d73d77 |
1489 | hdelete(pidstatus,spid,strlen(spid)); |
20188a90 |
1490 | return pid; |
1491 | } |
1492 | } |
1493 | else { |
1494 | HENT *entry; |
1495 | |
1496 | hiterinit(pidstatus); |
1497 | if (entry = hiternext(pidstatus)) { |
1498 | pid = atoi(hiterkey(entry,statusp)); |
1499 | str = hiterval(entry); |
1500 | *statusp = (int)str->str_u.str_useful; |
1501 | sprintf(spid, "%d", pid); |
e5d73d77 |
1502 | hdelete(pidstatus,spid,strlen(spid)); |
20188a90 |
1503 | return pid; |
1504 | } |
1505 | } |
1506 | if (flags) |
1507 | fatal("Can't do waitpid with flags"); |
a687059c |
1508 | else { |
20188a90 |
1509 | while ((result = wait(statusp)) != pid && pid > 0 && result >= 0) |
1510 | pidgone(result,*statusp); |
a687059c |
1511 | if (result < 0) |
20188a90 |
1512 | *statusp = -1; |
a687059c |
1513 | } |
e5d73d77 |
1514 | return result; |
a687059c |
1515 | #endif |
20188a90 |
1516 | #endif |
a687059c |
1517 | } |
1518 | |
de3bb511 |
1519 | /*SUPPRESS 590*/ |
a687059c |
1520 | pidgone(pid,status) |
1521 | int pid; |
1522 | int status; |
1523 | { |
fe14fcc3 |
1524 | #if defined(HAS_WAIT4) || defined(HAS_WAITPID) |
a687059c |
1525 | #else |
a687059c |
1526 | register STR *str; |
20188a90 |
1527 | char spid[16]; |
a687059c |
1528 | |
20188a90 |
1529 | sprintf(spid, "%d", pid); |
e5d73d77 |
1530 | str = hfetch(pidstatus,spid,strlen(spid),TRUE); |
20188a90 |
1531 | str->str_u.str_useful = status; |
a687059c |
1532 | #endif |
20188a90 |
1533 | return; |
a687059c |
1534 | } |
fe14fcc3 |
1535 | #endif /* !MSDOS */ |
a687059c |
1536 | |
fe14fcc3 |
1537 | #ifndef HAS_MEMCMP |
a687059c |
1538 | memcmp(s1,s2,len) |
1539 | register unsigned char *s1; |
1540 | register unsigned char *s2; |
1541 | register int len; |
1542 | { |
1543 | register int tmp; |
1544 | |
1545 | while (len--) { |
1546 | if (tmp = *s1++ - *s2++) |
1547 | return tmp; |
1548 | } |
1549 | return 0; |
1550 | } |
fe14fcc3 |
1551 | #endif /* HAS_MEMCMP */ |
9f68db38 |
1552 | |
1553 | void |
1554 | repeatcpy(to,from,len,count) |
1555 | register char *to; |
1556 | register char *from; |
1557 | int len; |
1558 | register int count; |
1559 | { |
1560 | register int todo; |
1561 | register char *frombase = from; |
1562 | |
1563 | if (len == 1) { |
1564 | todo = *from; |
1565 | while (count-- > 0) |
1566 | *to++ = todo; |
1567 | return; |
1568 | } |
1569 | while (count-- > 0) { |
1570 | for (todo = len; todo > 0; todo--) { |
1571 | *to++ = *from++; |
1572 | } |
1573 | from = frombase; |
1574 | } |
1575 | } |
0f85fab0 |
1576 | |
1577 | #ifndef CASTNEGFLOAT |
1578 | unsigned long |
1579 | castulong(f) |
1580 | double f; |
1581 | { |
1582 | long along; |
1583 | |
27e2fb84 |
1584 | #if CASTFLAGS & 2 |
34de22dd |
1585 | # define BIGDOUBLE 2147483648.0 |
1586 | if (f >= BIGDOUBLE) |
1587 | return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000; |
1588 | #endif |
0f85fab0 |
1589 | if (f >= 0.0) |
1590 | return (unsigned long)f; |
1591 | along = (long)f; |
1592 | return (unsigned long)along; |
1593 | } |
1594 | #endif |
62b28dd9 |
1595 | |
fe14fcc3 |
1596 | #ifndef HAS_RENAME |
62b28dd9 |
1597 | int |
1598 | same_dirent(a,b) |
1599 | char *a; |
1600 | char *b; |
1601 | { |
1602 | char *fa = rindex(a,'/'); |
1603 | char *fb = rindex(b,'/'); |
1604 | struct stat tmpstatbuf1; |
1605 | struct stat tmpstatbuf2; |
1606 | #ifndef MAXPATHLEN |
1607 | #define MAXPATHLEN 1024 |
1608 | #endif |
1609 | char tmpbuf[MAXPATHLEN+1]; |
1610 | |
1611 | if (fa) |
1612 | fa++; |
1613 | else |
1614 | fa = a; |
1615 | if (fb) |
1616 | fb++; |
1617 | else |
1618 | fb = b; |
1619 | if (strNE(a,b)) |
1620 | return FALSE; |
1621 | if (fa == a) |
6eb13c3b |
1622 | strcpy(tmpbuf,"."); |
62b28dd9 |
1623 | else |
1624 | strncpy(tmpbuf, a, fa - a); |
1625 | if (stat(tmpbuf, &tmpstatbuf1) < 0) |
1626 | return FALSE; |
1627 | if (fb == b) |
6eb13c3b |
1628 | strcpy(tmpbuf,"."); |
62b28dd9 |
1629 | else |
1630 | strncpy(tmpbuf, b, fb - b); |
1631 | if (stat(tmpbuf, &tmpstatbuf2) < 0) |
1632 | return FALSE; |
1633 | return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev && |
1634 | tmpstatbuf1.st_ino == tmpstatbuf2.st_ino; |
1635 | } |
fe14fcc3 |
1636 | #endif /* !HAS_RENAME */ |
1637 | |
1638 | unsigned long |
1639 | scanoct(start, len, retlen) |
1640 | char *start; |
1641 | int len; |
1642 | int *retlen; |
1643 | { |
1644 | register char *s = start; |
1645 | register unsigned long retval = 0; |
1646 | |
1647 | while (len-- && *s >= '0' && *s <= '7') { |
1648 | retval <<= 3; |
1649 | retval |= *s++ - '0'; |
1650 | } |
1651 | *retlen = s - start; |
1652 | return retval; |
1653 | } |
1654 | |
1655 | unsigned long |
1656 | scanhex(start, len, retlen) |
1657 | char *start; |
1658 | int len; |
1659 | int *retlen; |
1660 | { |
1661 | register char *s = start; |
1662 | register unsigned long retval = 0; |
1663 | char *tmp; |
1664 | |
1665 | while (len-- && *s && (tmp = index(hexdigit, *s))) { |
1666 | retval <<= 4; |
1667 | retval |= (tmp - hexdigit) & 15; |
1668 | s++; |
1669 | } |
1670 | *retlen = s - start; |
1671 | return retval; |
1672 | } |