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79072805 |
1 | /* $RCSfile: util.c,v $$Revision: 4.1 $$Date: 92/08/07 18:29:00 $ |
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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 $ |
79072805 |
9 | * Revision 4.1 92/08/07 18:29:00 lwall |
10 | * |
faf8582f |
11 | * Revision 4.0.1.6 92/06/11 21:18:47 lwall |
12 | * patch34: boneheaded typo in my_bcopy() |
13 | * |
7c0587c8 |
14 | * Revision 4.0.1.5 92/06/08 16:08:37 lwall |
15 | * patch20: removed implicit int declarations on functions |
16 | * patch20: Perl now distinguishes overlapped copies from non-overlapped |
17 | * patch20: fixed confusion between a *var's real name and its effective name |
18 | * patch20: bcopy() and memcpy() now tested for overlap safety |
19 | * patch20: added Atari ST portability |
20 | * |
988174c1 |
21 | * Revision 4.0.1.4 91/11/11 16:48:54 lwall |
22 | * patch19: study was busted by 4.018 |
23 | * patch19: added little-endian pack/unpack options |
24 | * |
de3bb511 |
25 | * Revision 4.0.1.3 91/11/05 19:18:26 lwall |
26 | * patch11: safe malloc code now integrated into Perl's malloc when possible |
93a17b20 |
27 | * patch11: strchr("little", "longer string") could visit faraway places |
de3bb511 |
28 | * patch11: warn '-' x 10000 dumped core |
29 | * patch11: forked exec on non-existent program now issues a warning |
30 | * |
d48672a2 |
31 | * Revision 4.0.1.2 91/06/07 12:10:42 lwall |
32 | * patch4: new copyright notice |
33 | * patch4: made some allowances for "semi-standard" C |
93a17b20 |
34 | * patch4: strchr() could blow up searching for null string |
d48672a2 |
35 | * patch4: taintchecks could improperly modify parent in vfork() |
36 | * patch4: exec would close files even if you cleared close-on-exec flag |
37 | * |
35c8bce7 |
38 | * Revision 4.0.1.1 91/04/12 09:19:25 lwall |
39 | * patch1: random cleanup in cpp namespace |
40 | * |
fe14fcc3 |
41 | * Revision 4.0 91/03/20 01:56:39 lwall |
42 | * 4.0 baseline. |
8d063cd8 |
43 | * |
44 | */ |
de3bb511 |
45 | /*SUPPRESS 112*/ |
8d063cd8 |
46 | |
8d063cd8 |
47 | #include "EXTERN.h" |
8d063cd8 |
48 | #include "perl.h" |
62b28dd9 |
49 | |
6eb13c3b |
50 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
a687059c |
51 | #include <signal.h> |
62b28dd9 |
52 | #endif |
a687059c |
53 | |
8990e307 |
54 | #ifdef STANDARD_C |
55 | # include <unistd.h> |
56 | #endif |
57 | |
a687059c |
58 | #ifdef I_VFORK |
59 | # include <vfork.h> |
60 | #endif |
61 | |
fe14fcc3 |
62 | #ifdef I_FCNTL |
63 | # include <fcntl.h> |
64 | #endif |
65 | #ifdef I_SYS_FILE |
66 | # include <sys/file.h> |
67 | #endif |
68 | |
8d063cd8 |
69 | #define FLUSH |
8d063cd8 |
70 | |
de3bb511 |
71 | #ifndef safemalloc |
72 | |
8d063cd8 |
73 | /* paranoid version of malloc */ |
74 | |
a687059c |
75 | /* NOTE: Do not call the next three routines directly. Use the macros |
76 | * in handy.h, so that we can easily redefine everything to do tracking of |
77 | * allocated hunks back to the original New to track down any memory leaks. |
78 | */ |
79 | |
8d063cd8 |
80 | char * |
81 | safemalloc(size) |
62b28dd9 |
82 | #ifdef MSDOS |
83 | unsigned long size; |
84 | #else |
8d063cd8 |
85 | MEM_SIZE size; |
62b28dd9 |
86 | #endif /* MSDOS */ |
8d063cd8 |
87 | { |
2304df62 |
88 | char *ptr; |
d48672a2 |
89 | #ifndef STANDARD_C |
8d063cd8 |
90 | char *malloc(); |
d48672a2 |
91 | #endif /* ! STANDARD_C */ |
8d063cd8 |
92 | |
62b28dd9 |
93 | #ifdef MSDOS |
94 | if (size > 0xffff) { |
95 | fprintf(stderr, "Allocation too large: %lx\n", size) FLUSH; |
79072805 |
96 | my_exit(1); |
62b28dd9 |
97 | } |
98 | #endif /* MSDOS */ |
34de22dd |
99 | #ifdef DEBUGGING |
100 | if ((long)size < 0) |
463ee0b2 |
101 | croak("panic: malloc"); |
34de22dd |
102 | #endif |
8d063cd8 |
103 | ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
79072805 |
104 | #if !(defined(I286) || defined(atarist)) |
105 | DEBUG_m(fprintf(stderr,"0x%x: (%05d) malloc %ld bytes\n",ptr,an++,(long)size)); |
106 | #else |
107 | DEBUG_m(fprintf(stderr,"0x%lx: (%05d) malloc %ld bytes\n",ptr,an++,(long)size)); |
8d063cd8 |
108 | #endif |
109 | if (ptr != Nullch) |
110 | return ptr; |
7c0587c8 |
111 | else if (nomemok) |
112 | return Nullch; |
8d063cd8 |
113 | else { |
79072805 |
114 | fputs(no_mem,stderr) FLUSH; |
115 | my_exit(1); |
8d063cd8 |
116 | } |
117 | /*NOTREACHED*/ |
118 | } |
119 | |
120 | /* paranoid version of realloc */ |
121 | |
122 | char * |
123 | saferealloc(where,size) |
124 | char *where; |
62b28dd9 |
125 | #ifndef MSDOS |
8d063cd8 |
126 | MEM_SIZE size; |
62b28dd9 |
127 | #else |
128 | unsigned long size; |
129 | #endif /* MSDOS */ |
8d063cd8 |
130 | { |
131 | char *ptr; |
d48672a2 |
132 | #ifndef STANDARD_C |
8d063cd8 |
133 | char *realloc(); |
d48672a2 |
134 | #endif /* ! STANDARD_C */ |
8d063cd8 |
135 | |
62b28dd9 |
136 | #ifdef MSDOS |
137 | if (size > 0xffff) { |
138 | fprintf(stderr, "Reallocation too large: %lx\n", size) FLUSH; |
79072805 |
139 | my_exit(1); |
62b28dd9 |
140 | } |
141 | #endif /* MSDOS */ |
378cc40b |
142 | if (!where) |
463ee0b2 |
143 | croak("Null realloc"); |
34de22dd |
144 | #ifdef DEBUGGING |
145 | if ((long)size < 0) |
463ee0b2 |
146 | croak("panic: realloc"); |
34de22dd |
147 | #endif |
8d063cd8 |
148 | ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */ |
79072805 |
149 | |
150 | #if !(defined(I286) || defined(atarist)) |
151 | DEBUG_m( { |
8d063cd8 |
152 | fprintf(stderr,"0x%x: (%05d) rfree\n",where,an++); |
7c0587c8 |
153 | fprintf(stderr,"0x%x: (%05d) realloc %ld bytes\n",ptr,an++,(long)size); |
79072805 |
154 | } ) |
155 | #else |
156 | DEBUG_m( { |
a687059c |
157 | fprintf(stderr,"0x%lx: (%05d) rfree\n",where,an++); |
7c0587c8 |
158 | fprintf(stderr,"0x%lx: (%05d) realloc %ld bytes\n",ptr,an++,(long)size); |
79072805 |
159 | } ) |
8d063cd8 |
160 | #endif |
79072805 |
161 | |
8d063cd8 |
162 | if (ptr != Nullch) |
163 | return ptr; |
7c0587c8 |
164 | else if (nomemok) |
165 | return Nullch; |
8d063cd8 |
166 | else { |
79072805 |
167 | fputs(no_mem,stderr) FLUSH; |
168 | my_exit(1); |
8d063cd8 |
169 | } |
170 | /*NOTREACHED*/ |
171 | } |
172 | |
173 | /* safe version of free */ |
174 | |
a687059c |
175 | void |
8d063cd8 |
176 | safefree(where) |
177 | char *where; |
178 | { |
79072805 |
179 | #if !(defined(I286) || defined(atarist)) |
180 | DEBUG_m( fprintf(stderr,"0x%x: (%05d) free\n",where,an++)); |
181 | #else |
182 | DEBUG_m( fprintf(stderr,"0x%lx: (%05d) free\n",where,an++)); |
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) |
79072805 |
198 | I32 x; |
a687059c |
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 | { |
79072805 |
222 | I32 x; |
a687059c |
223 | |
224 | if (!where) |
225 | return; |
226 | where -= ALIGN; |
227 | x = where[0] + 100 * where[1]; |
228 | xcount[x]--; |
229 | safefree(where); |
230 | } |
231 | |
7c0587c8 |
232 | static void |
a687059c |
233 | xstat() |
8d063cd8 |
234 | { |
79072805 |
235 | register I32 i; |
8d063cd8 |
236 | |
a687059c |
237 | for (i = 0; i < MAXXCOUNT; i++) { |
de3bb511 |
238 | if (xcount[i] > lastxcount[i]) { |
a687059c |
239 | fprintf(stderr,"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]); |
240 | lastxcount[i] = xcount[i]; |
8d063cd8 |
241 | } |
242 | } |
8d063cd8 |
243 | } |
a687059c |
244 | |
245 | #endif /* LEAKTEST */ |
8d063cd8 |
246 | |
247 | /* copy a string up to some (non-backslashed) delimiter, if any */ |
248 | |
249 | char * |
a687059c |
250 | cpytill(to,from,fromend,delim,retlen) |
62b28dd9 |
251 | register char *to; |
252 | register char *from; |
a687059c |
253 | register char *fromend; |
79072805 |
254 | register I32 delim; |
255 | I32 *retlen; |
8d063cd8 |
256 | { |
a687059c |
257 | char *origto = to; |
258 | |
259 | for (; from < fromend; from++,to++) { |
378cc40b |
260 | if (*from == '\\') { |
261 | if (from[1] == delim) |
262 | from++; |
263 | else if (from[1] == '\\') |
264 | *to++ = *from++; |
265 | } |
8d063cd8 |
266 | else if (*from == delim) |
267 | break; |
268 | *to = *from; |
269 | } |
270 | *to = '\0'; |
a687059c |
271 | *retlen = to - origto; |
8d063cd8 |
272 | return from; |
273 | } |
274 | |
275 | /* return ptr to little string in big string, NULL if not found */ |
378cc40b |
276 | /* This routine was donated by Corey Satten. */ |
8d063cd8 |
277 | |
278 | char * |
279 | instr(big, little) |
378cc40b |
280 | register char *big; |
281 | register char *little; |
282 | { |
283 | register char *s, *x; |
79072805 |
284 | register I32 first; |
378cc40b |
285 | |
a687059c |
286 | if (!little) |
287 | return big; |
288 | first = *little++; |
378cc40b |
289 | if (!first) |
290 | return big; |
291 | while (*big) { |
292 | if (*big++ != first) |
293 | continue; |
294 | for (x=big,s=little; *s; /**/ ) { |
295 | if (!*x) |
296 | return Nullch; |
297 | if (*s++ != *x++) { |
298 | s--; |
299 | break; |
300 | } |
301 | } |
302 | if (!*s) |
303 | return big-1; |
304 | } |
305 | return Nullch; |
306 | } |
8d063cd8 |
307 | |
a687059c |
308 | /* same as instr but allow embedded nulls */ |
309 | |
310 | char * |
311 | ninstr(big, bigend, little, lend) |
312 | register char *big; |
313 | register char *bigend; |
314 | char *little; |
315 | char *lend; |
8d063cd8 |
316 | { |
a687059c |
317 | register char *s, *x; |
79072805 |
318 | register I32 first = *little; |
a687059c |
319 | register char *littleend = lend; |
378cc40b |
320 | |
a687059c |
321 | if (!first && little > littleend) |
322 | return big; |
de3bb511 |
323 | if (bigend - big < littleend - little) |
324 | return Nullch; |
a687059c |
325 | bigend -= littleend - little++; |
326 | while (big <= bigend) { |
327 | if (*big++ != first) |
328 | continue; |
329 | for (x=big,s=little; s < littleend; /**/ ) { |
330 | if (*s++ != *x++) { |
331 | s--; |
332 | break; |
333 | } |
334 | } |
335 | if (s >= littleend) |
336 | return big-1; |
378cc40b |
337 | } |
a687059c |
338 | return Nullch; |
339 | } |
340 | |
341 | /* reverse of the above--find last substring */ |
342 | |
343 | char * |
344 | rninstr(big, bigend, little, lend) |
345 | register char *big; |
346 | char *bigend; |
347 | char *little; |
348 | char *lend; |
349 | { |
350 | register char *bigbeg; |
351 | register char *s, *x; |
79072805 |
352 | register I32 first = *little; |
a687059c |
353 | register char *littleend = lend; |
354 | |
355 | if (!first && little > littleend) |
356 | return bigend; |
357 | bigbeg = big; |
358 | big = bigend - (littleend - little++); |
359 | while (big >= bigbeg) { |
360 | if (*big-- != first) |
361 | continue; |
362 | for (x=big+2,s=little; s < littleend; /**/ ) { |
363 | if (*s++ != *x++) { |
364 | s--; |
365 | break; |
366 | } |
367 | } |
368 | if (s >= littleend) |
369 | return big+1; |
378cc40b |
370 | } |
a687059c |
371 | return Nullch; |
378cc40b |
372 | } |
a687059c |
373 | |
378cc40b |
374 | void |
79072805 |
375 | fbm_compile(sv, iflag) |
376 | SV *sv; |
377 | I32 iflag; |
378cc40b |
378 | { |
a687059c |
379 | register unsigned char *s; |
380 | register unsigned char *table; |
79072805 |
381 | register U32 i; |
382 | register U32 len = SvCUR(sv); |
383 | I32 rarest = 0; |
384 | U32 frequency = 256; |
385 | |
386 | Sv_Grow(sv,len+258); |
463ee0b2 |
387 | table = (unsigned char*)(SvPVX(sv) + len + 1); |
a687059c |
388 | s = table - 2; |
389 | for (i = 0; i < 256; i++) { |
378cc40b |
390 | table[i] = len; |
391 | } |
392 | i = 0; |
463ee0b2 |
393 | while (s >= (unsigned char*)(SvPVX(sv))) |
a687059c |
394 | { |
395 | if (table[*s] == len) { |
396 | #ifndef pdp11 |
397 | if (iflag) |
398 | table[*s] = table[fold[*s]] = i; |
399 | #else |
400 | if (iflag) { |
79072805 |
401 | I32 j; |
a687059c |
402 | j = fold[*s]; |
403 | table[j] = i; |
404 | table[*s] = i; |
405 | } |
406 | #endif /* pdp11 */ |
407 | else |
408 | table[*s] = i; |
409 | } |
378cc40b |
410 | s--,i++; |
411 | } |
79072805 |
412 | sv_upgrade(sv, SVt_PVBM); |
413 | sv_magic(sv, 0, 'B', 0, 0); /* deep magic */ |
414 | SvVALID_on(sv); |
378cc40b |
415 | |
463ee0b2 |
416 | s = (unsigned char*)(SvPVX(sv)); /* deeper magic */ |
a687059c |
417 | if (iflag) { |
79072805 |
418 | register U32 tmp, foldtmp; |
419 | SvCASEFOLD_on(sv); |
a687059c |
420 | for (i = 0; i < len; i++) { |
421 | tmp=freq[s[i]]; |
422 | foldtmp=freq[fold[s[i]]]; |
423 | if (tmp < frequency && foldtmp < frequency) { |
424 | rarest = i; |
425 | /* choose most frequent among the two */ |
426 | frequency = (tmp > foldtmp) ? tmp : foldtmp; |
427 | } |
428 | } |
429 | } |
430 | else { |
431 | for (i = 0; i < len; i++) { |
432 | if (freq[s[i]] < frequency) { |
433 | rarest = i; |
434 | frequency = freq[s[i]]; |
435 | } |
378cc40b |
436 | } |
437 | } |
79072805 |
438 | BmRARE(sv) = s[rarest]; |
439 | BmPREVIOUS(sv) = rarest; |
440 | DEBUG_r(fprintf(stderr,"rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv))); |
378cc40b |
441 | } |
442 | |
378cc40b |
443 | char * |
79072805 |
444 | fbm_instr(big, bigend, littlestr) |
a687059c |
445 | unsigned char *big; |
446 | register unsigned char *bigend; |
79072805 |
447 | SV *littlestr; |
378cc40b |
448 | { |
a687059c |
449 | register unsigned char *s; |
79072805 |
450 | register I32 tmp; |
451 | register I32 littlelen; |
a687059c |
452 | register unsigned char *little; |
453 | register unsigned char *table; |
454 | register unsigned char *olds; |
455 | register unsigned char *oldlittle; |
378cc40b |
456 | |
79072805 |
457 | if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) { |
463ee0b2 |
458 | if (!SvPOK(littlestr) || !SvPVX(littlestr)) |
d48672a2 |
459 | return (char*)big; |
9f68db38 |
460 | return ninstr((char*)big,(char*)bigend, |
463ee0b2 |
461 | SvPVX(littlestr), SvPVX(littlestr) + SvCUR(littlestr)); |
d48672a2 |
462 | } |
378cc40b |
463 | |
79072805 |
464 | littlelen = SvCUR(littlestr); |
465 | if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */ |
0f85fab0 |
466 | if (littlelen > bigend - big) |
467 | return Nullch; |
463ee0b2 |
468 | little = (unsigned char*)SvPVX(littlestr); |
79072805 |
469 | if (SvCASEFOLD(littlestr)) { /* oops, fake it */ |
a687059c |
470 | big = bigend - littlelen; /* just start near end */ |
471 | if (bigend[-1] == '\n' && little[littlelen-1] != '\n') |
472 | big--; |
378cc40b |
473 | } |
474 | else { |
a687059c |
475 | s = bigend - littlelen; |
476 | if (*s == *little && bcmp(s,little,littlelen)==0) |
477 | return (char*)s; /* how sweet it is */ |
34de22dd |
478 | else if (bigend[-1] == '\n' && little[littlelen-1] != '\n' |
479 | && s > big) { |
a687059c |
480 | s--; |
481 | if (*s == *little && bcmp(s,little,littlelen)==0) |
482 | return (char*)s; |
483 | } |
484 | return Nullch; |
485 | } |
486 | } |
463ee0b2 |
487 | table = (unsigned char*)(SvPVX(littlestr) + littlelen + 1); |
62b28dd9 |
488 | if (--littlelen >= bigend - big) |
489 | return Nullch; |
490 | s = big + littlelen; |
a687059c |
491 | oldlittle = little = table - 2; |
79072805 |
492 | if (SvCASEFOLD(littlestr)) { /* case insensitive? */ |
20188a90 |
493 | if (s < bigend) { |
a687059c |
494 | top1: |
de3bb511 |
495 | /*SUPPRESS 560*/ |
a687059c |
496 | if (tmp = table[*s]) { |
62b28dd9 |
497 | #ifdef POINTERRIGOR |
498 | if (bigend - s > tmp) { |
499 | s += tmp; |
500 | goto top1; |
501 | } |
502 | #else |
503 | if ((s += tmp) < bigend) |
504 | goto top1; |
505 | #endif |
506 | return Nullch; |
a687059c |
507 | } |
508 | else { |
509 | tmp = littlelen; /* less expensive than calling strncmp() */ |
510 | olds = s; |
511 | while (tmp--) { |
512 | if (*--s == *--little || fold[*s] == *little) |
513 | continue; |
514 | s = olds + 1; /* here we pay the price for failure */ |
515 | little = oldlittle; |
516 | if (s < bigend) /* fake up continue to outer loop */ |
517 | goto top1; |
518 | return Nullch; |
519 | } |
a687059c |
520 | return (char *)s; |
a687059c |
521 | } |
522 | } |
523 | } |
524 | else { |
20188a90 |
525 | if (s < bigend) { |
a687059c |
526 | top2: |
de3bb511 |
527 | /*SUPPRESS 560*/ |
a687059c |
528 | if (tmp = table[*s]) { |
62b28dd9 |
529 | #ifdef POINTERRIGOR |
530 | if (bigend - s > tmp) { |
531 | s += tmp; |
532 | goto top2; |
533 | } |
534 | #else |
535 | if ((s += tmp) < bigend) |
536 | goto top2; |
537 | #endif |
538 | return Nullch; |
a687059c |
539 | } |
540 | else { |
541 | tmp = littlelen; /* less expensive than calling strncmp() */ |
542 | olds = s; |
543 | while (tmp--) { |
544 | if (*--s == *--little) |
545 | continue; |
546 | s = olds + 1; /* here we pay the price for failure */ |
547 | little = oldlittle; |
548 | if (s < bigend) /* fake up continue to outer loop */ |
549 | goto top2; |
550 | return Nullch; |
551 | } |
a687059c |
552 | return (char *)s; |
378cc40b |
553 | } |
378cc40b |
554 | } |
555 | } |
556 | return Nullch; |
557 | } |
558 | |
559 | char * |
560 | screaminstr(bigstr, littlestr) |
79072805 |
561 | SV *bigstr; |
562 | SV *littlestr; |
378cc40b |
563 | { |
a687059c |
564 | register unsigned char *s, *x; |
565 | register unsigned char *big; |
79072805 |
566 | register I32 pos; |
567 | register I32 previous; |
568 | register I32 first; |
a687059c |
569 | register unsigned char *little; |
570 | register unsigned char *bigend; |
571 | register unsigned char *littleend; |
378cc40b |
572 | |
79072805 |
573 | if ((pos = screamfirst[BmRARE(littlestr)]) < 0) |
378cc40b |
574 | return Nullch; |
463ee0b2 |
575 | little = (unsigned char *)(SvPVX(littlestr)); |
79072805 |
576 | littleend = little + SvCUR(littlestr); |
378cc40b |
577 | first = *little++; |
79072805 |
578 | previous = BmPREVIOUS(littlestr); |
463ee0b2 |
579 | big = (unsigned char *)(SvPVX(bigstr)); |
79072805 |
580 | bigend = big + SvCUR(bigstr); |
378cc40b |
581 | while (pos < previous) { |
582 | if (!(pos += screamnext[pos])) |
583 | return Nullch; |
584 | } |
de3bb511 |
585 | #ifdef POINTERRIGOR |
79072805 |
586 | if (SvCASEFOLD(littlestr)) { /* case insignificant? */ |
a687059c |
587 | do { |
988174c1 |
588 | if (big[pos-previous] != first && big[pos-previous] != fold[first]) |
589 | continue; |
de3bb511 |
590 | for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) { |
591 | if (x >= bigend) |
592 | return Nullch; |
593 | if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) { |
594 | s--; |
595 | break; |
596 | } |
597 | } |
598 | if (s == littleend) |
de3bb511 |
599 | return (char *)(big+pos-previous); |
de3bb511 |
600 | } while ( |
de3bb511 |
601 | pos += screamnext[pos] /* does this goof up anywhere? */ |
de3bb511 |
602 | ); |
603 | } |
604 | else { |
605 | do { |
988174c1 |
606 | if (big[pos-previous] != first) |
607 | continue; |
de3bb511 |
608 | for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) { |
609 | if (x >= bigend) |
610 | return Nullch; |
611 | if (*s++ != *x++) { |
612 | s--; |
613 | break; |
614 | } |
615 | } |
616 | if (s == littleend) |
de3bb511 |
617 | return (char *)(big+pos-previous); |
79072805 |
618 | } while ( pos += screamnext[pos] ); |
de3bb511 |
619 | } |
620 | #else /* !POINTERRIGOR */ |
621 | big -= previous; |
79072805 |
622 | if (SvCASEFOLD(littlestr)) { /* case insignificant? */ |
de3bb511 |
623 | do { |
988174c1 |
624 | if (big[pos] != first && big[pos] != fold[first]) |
625 | continue; |
a687059c |
626 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { |
627 | if (x >= bigend) |
628 | return Nullch; |
629 | if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) { |
630 | s--; |
631 | break; |
632 | } |
633 | } |
634 | if (s == littleend) |
a687059c |
635 | return (char *)(big+pos); |
a687059c |
636 | } while ( |
a687059c |
637 | pos += screamnext[pos] /* does this goof up anywhere? */ |
a687059c |
638 | ); |
639 | } |
640 | else { |
641 | do { |
988174c1 |
642 | if (big[pos] != first) |
643 | continue; |
a687059c |
644 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { |
645 | if (x >= bigend) |
646 | return Nullch; |
647 | if (*s++ != *x++) { |
648 | s--; |
649 | break; |
650 | } |
378cc40b |
651 | } |
a687059c |
652 | if (s == littleend) |
a687059c |
653 | return (char *)(big+pos); |
a687059c |
654 | } while ( |
a687059c |
655 | pos += screamnext[pos] |
a687059c |
656 | ); |
657 | } |
de3bb511 |
658 | #endif /* POINTERRIGOR */ |
8d063cd8 |
659 | return Nullch; |
660 | } |
661 | |
79072805 |
662 | I32 |
663 | ibcmp(a,b,len) |
664 | register char *a; |
665 | register char *b; |
666 | register I32 len; |
667 | { |
668 | while (len--) { |
669 | if (*a == *b) { |
670 | a++,b++; |
671 | continue; |
672 | } |
673 | if (fold[*a++] == *b++) |
674 | continue; |
675 | return 1; |
676 | } |
677 | return 0; |
678 | } |
679 | |
8d063cd8 |
680 | /* copy a string to a safe spot */ |
681 | |
682 | char * |
79072805 |
683 | savestr(sv) |
684 | char *sv; |
8d063cd8 |
685 | { |
a687059c |
686 | register char *newaddr; |
8d063cd8 |
687 | |
79072805 |
688 | New(902,newaddr,strlen(sv)+1,char); |
689 | (void)strcpy(newaddr,sv); |
8d063cd8 |
690 | return newaddr; |
691 | } |
692 | |
a687059c |
693 | /* same thing but with a known length */ |
694 | |
695 | char * |
79072805 |
696 | nsavestr(sv, len) |
697 | char *sv; |
698 | register I32 len; |
a687059c |
699 | { |
700 | register char *newaddr; |
701 | |
702 | New(903,newaddr,len+1,char); |
79072805 |
703 | Copy(sv,newaddr,len,char); /* might not be null terminated */ |
a687059c |
704 | newaddr[len] = '\0'; /* is now */ |
705 | return newaddr; |
706 | } |
707 | |
8990e307 |
708 | #if !defined(STANDARD_C) && !defined(I_VARARGS) |
8d063cd8 |
709 | |
8990e307 |
710 | /* |
711 | * Fallback on the old hackers way of doing varargs |
712 | */ |
8d063cd8 |
713 | |
378cc40b |
714 | /*VARARGS1*/ |
7c0587c8 |
715 | char * |
378cc40b |
716 | mess(pat,a1,a2,a3,a4) |
717 | char *pat; |
a687059c |
718 | long a1, a2, a3, a4; |
378cc40b |
719 | { |
720 | char *s; |
79072805 |
721 | I32 usermess = strEQ(pat,"%s"); |
722 | SV *tmpstr; |
378cc40b |
723 | |
a687059c |
724 | s = buf; |
de3bb511 |
725 | if (usermess) { |
8990e307 |
726 | tmpstr = sv_newmortal(); |
79072805 |
727 | sv_setpv(tmpstr, (char*)a1); |
463ee0b2 |
728 | *s++ = SvPVX(tmpstr)[SvCUR(tmpstr)-1]; |
de3bb511 |
729 | } |
730 | else { |
731 | (void)sprintf(s,pat,a1,a2,a3,a4); |
732 | s += strlen(s); |
733 | } |
734 | |
378cc40b |
735 | if (s[-1] != '\n') { |
2304df62 |
736 | if (dirty) |
737 | strcpy(s, " during global destruction.\n"); |
738 | else { |
739 | if (curcop->cop_line) { |
740 | (void)sprintf(s," at %s line %ld", |
741 | SvPVX(GvSV(curcop->cop_filegv)), (long)curcop->cop_line); |
742 | s += strlen(s); |
743 | } |
744 | if (last_in_gv && |
745 | GvIO(last_in_gv) && |
746 | IoLINES(GvIO(last_in_gv)) ) { |
747 | (void)sprintf(s,", <%s> %s %ld", |
748 | last_in_gv == argvgv ? "" : GvENAME(last_in_gv), |
749 | strEQ(rs,"\n") ? "line" : "chunk", |
750 | (long)IoLINES(GvIO(last_in_gv))); |
751 | s += strlen(s); |
752 | } |
753 | (void)strcpy(s,".\n"); |
378cc40b |
754 | } |
de3bb511 |
755 | if (usermess) |
79072805 |
756 | sv_catpv(tmpstr,buf+1); |
378cc40b |
757 | } |
de3bb511 |
758 | if (usermess) |
463ee0b2 |
759 | return SvPVX(tmpstr); |
de3bb511 |
760 | else |
761 | return buf; |
378cc40b |
762 | } |
763 | |
8d063cd8 |
764 | /*VARARGS1*/ |
463ee0b2 |
765 | void croak(pat,a1,a2,a3,a4) |
8d063cd8 |
766 | char *pat; |
a687059c |
767 | long a1, a2, a3, a4; |
8d063cd8 |
768 | { |
9f68db38 |
769 | char *tmps; |
de3bb511 |
770 | char *message; |
8d063cd8 |
771 | |
de3bb511 |
772 | message = mess(pat,a1,a2,a3,a4); |
de3bb511 |
773 | fputs(message,stderr); |
a687059c |
774 | (void)fflush(stderr); |
8d063cd8 |
775 | if (e_fp) |
a687059c |
776 | (void)UNLINK(e_tmpname); |
378cc40b |
777 | statusvalue >>= 8; |
79072805 |
778 | my_exit((I32)((errno&255)?errno:((statusvalue&255)?statusvalue:255))); |
378cc40b |
779 | } |
780 | |
781 | /*VARARGS1*/ |
7c0587c8 |
782 | void warn(pat,a1,a2,a3,a4) |
378cc40b |
783 | char *pat; |
a687059c |
784 | long a1, a2, a3, a4; |
378cc40b |
785 | { |
de3bb511 |
786 | char *message; |
787 | |
788 | message = mess(pat,a1,a2,a3,a4); |
789 | fputs(message,stderr); |
a687059c |
790 | #ifdef LEAKTEST |
79072805 |
791 | DEBUG_L(xstat()); |
a687059c |
792 | #endif |
793 | (void)fflush(stderr); |
8d063cd8 |
794 | } |
8990e307 |
795 | |
796 | #else /* !defined(STANDARD_C) && !defined(I_VARARGS) */ |
797 | |
798 | #ifdef STANDARD_C |
799 | char * |
2304df62 |
800 | mess(char *pat, va_list *args) |
a687059c |
801 | #else |
802 | /*VARARGS0*/ |
de3bb511 |
803 | char * |
8990e307 |
804 | mess(pat, args) |
a687059c |
805 | char *pat; |
2304df62 |
806 | va_list *args; |
8990e307 |
807 | #endif |
808 | { |
a687059c |
809 | char *s; |
79072805 |
810 | SV *tmpstr; |
811 | I32 usermess; |
d48672a2 |
812 | #ifndef HAS_VPRINTF |
a687059c |
813 | #ifdef CHARVSPRINTF |
814 | char *vsprintf(); |
815 | #else |
79072805 |
816 | I32 vsprintf(); |
a687059c |
817 | #endif |
d48672a2 |
818 | #endif |
a687059c |
819 | |
de3bb511 |
820 | s = buf; |
821 | usermess = strEQ(pat, "%s"); |
822 | if (usermess) { |
8990e307 |
823 | tmpstr = sv_newmortal(); |
2304df62 |
824 | sv_setpv(tmpstr, va_arg(*args, char *)); |
463ee0b2 |
825 | *s++ = SvPVX(tmpstr)[SvCUR(tmpstr)-1]; |
de3bb511 |
826 | } |
827 | else { |
2304df62 |
828 | (void) vsprintf(s,pat,*args); |
de3bb511 |
829 | s += strlen(s); |
830 | } |
2304df62 |
831 | va_end(*args); |
a687059c |
832 | |
a687059c |
833 | if (s[-1] != '\n') { |
2304df62 |
834 | if (dirty) |
835 | strcpy(s, " during global destruction.\n"); |
836 | else { |
837 | if (curcop->cop_line) { |
838 | (void)sprintf(s," at %s line %ld", |
839 | SvPVX(GvSV(curcop->cop_filegv)), (long)curcop->cop_line); |
840 | s += strlen(s); |
841 | } |
842 | if (last_in_gv && |
843 | GvIO(last_in_gv) && |
844 | IoLINES(GvIO(last_in_gv)) ) { |
845 | (void)sprintf(s,", <%s> %s %ld", |
846 | last_in_gv == argvgv ? "" : GvNAME(last_in_gv), |
847 | strEQ(rs,"\n") ? "line" : "chunk", |
848 | (long)IoLINES(GvIO(last_in_gv))); |
849 | s += strlen(s); |
850 | } |
851 | (void)strcpy(s,".\n"); |
a687059c |
852 | } |
de3bb511 |
853 | if (usermess) |
79072805 |
854 | sv_catpv(tmpstr,buf+1); |
a687059c |
855 | } |
de3bb511 |
856 | |
857 | if (usermess) |
463ee0b2 |
858 | return SvPVX(tmpstr); |
de3bb511 |
859 | else |
860 | return buf; |
a687059c |
861 | } |
862 | |
8990e307 |
863 | #ifdef STANDARD_C |
79072805 |
864 | void |
8990e307 |
865 | croak(char* pat, ...) |
463ee0b2 |
866 | #else |
8990e307 |
867 | /*VARARGS0*/ |
868 | void |
869 | croak(pat, va_alist) |
870 | char *pat; |
871 | va_dcl |
463ee0b2 |
872 | #endif |
a687059c |
873 | { |
874 | va_list args; |
9f68db38 |
875 | char *tmps; |
de3bb511 |
876 | char *message; |
a687059c |
877 | |
8990e307 |
878 | #ifdef STANDARD_C |
879 | va_start(args, pat); |
880 | #else |
a687059c |
881 | va_start(args); |
8990e307 |
882 | #endif |
2304df62 |
883 | message = mess(pat, &args); |
a687059c |
884 | va_end(args); |
79072805 |
885 | if (restartop = die_where(message)) |
886 | longjmp(top_env, 3); |
de3bb511 |
887 | fputs(message,stderr); |
a687059c |
888 | (void)fflush(stderr); |
889 | if (e_fp) |
890 | (void)UNLINK(e_tmpname); |
891 | statusvalue >>= 8; |
79072805 |
892 | my_exit((I32)((errno&255)?errno:((statusvalue&255)?statusvalue:255))); |
a687059c |
893 | } |
894 | |
8990e307 |
895 | void |
896 | #ifdef STANDARD_C |
897 | warn(char* pat,...) |
463ee0b2 |
898 | #else |
8990e307 |
899 | /*VARARGS0*/ |
900 | warn(pat,va_alist) |
901 | char *pat; |
902 | va_dcl |
463ee0b2 |
903 | #endif |
a687059c |
904 | { |
905 | va_list args; |
de3bb511 |
906 | char *message; |
a687059c |
907 | |
8990e307 |
908 | #ifdef STANDARD_C |
909 | va_start(args, pat); |
910 | #else |
a687059c |
911 | va_start(args); |
8990e307 |
912 | #endif |
2304df62 |
913 | message = mess(pat, &args); |
a687059c |
914 | va_end(args); |
915 | |
de3bb511 |
916 | fputs(message,stderr); |
a687059c |
917 | #ifdef LEAKTEST |
79072805 |
918 | DEBUG_L(xstat()); |
a687059c |
919 | #endif |
920 | (void)fflush(stderr); |
921 | } |
8990e307 |
922 | #endif /* !defined(STANDARD_C) && !defined(I_VARARGS) */ |
8d063cd8 |
923 | |
8d063cd8 |
924 | void |
7c0587c8 |
925 | my_setenv(nam,val) |
8d063cd8 |
926 | char *nam, *val; |
927 | { |
79072805 |
928 | register I32 i=setenv_getix(nam); /* where does it go? */ |
8d063cd8 |
929 | |
fe14fcc3 |
930 | if (environ == origenviron) { /* need we copy environment? */ |
79072805 |
931 | I32 j; |
932 | I32 max; |
fe14fcc3 |
933 | char **tmpenv; |
934 | |
de3bb511 |
935 | /*SUPPRESS 530*/ |
fe14fcc3 |
936 | for (max = i; environ[max]; max++) ; |
937 | New(901,tmpenv, max+2, char*); |
938 | for (j=0; j<max; j++) /* copy environment */ |
939 | tmpenv[j] = savestr(environ[j]); |
940 | tmpenv[max] = Nullch; |
941 | environ = tmpenv; /* tell exec where it is now */ |
942 | } |
a687059c |
943 | if (!val) { |
944 | while (environ[i]) { |
945 | environ[i] = environ[i+1]; |
946 | i++; |
947 | } |
948 | return; |
949 | } |
8d063cd8 |
950 | if (!environ[i]) { /* does not exist yet */ |
fe14fcc3 |
951 | Renew(environ, i+2, char*); /* just expand it a bit */ |
8d063cd8 |
952 | environ[i+1] = Nullch; /* make sure it's null terminated */ |
953 | } |
fe14fcc3 |
954 | else |
955 | Safefree(environ[i]); |
a687059c |
956 | New(904, environ[i], strlen(nam) + strlen(val) + 2, char); |
62b28dd9 |
957 | #ifndef MSDOS |
a687059c |
958 | (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */ |
62b28dd9 |
959 | #else |
960 | /* MS-DOS requires environment variable names to be in uppercase */ |
fe14fcc3 |
961 | /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but |
962 | * some utilities and applications may break because they only look |
963 | * for upper case strings. (Fixed strupr() bug here.)] |
964 | */ |
965 | strcpy(environ[i],nam); strupr(environ[i]); |
62b28dd9 |
966 | (void)sprintf(environ[i] + strlen(nam),"=%s",val); |
967 | #endif /* MSDOS */ |
8d063cd8 |
968 | } |
969 | |
79072805 |
970 | I32 |
971 | setenv_getix(nam) |
8d063cd8 |
972 | char *nam; |
973 | { |
79072805 |
974 | register I32 i, len = strlen(nam); |
8d063cd8 |
975 | |
976 | for (i = 0; environ[i]; i++) { |
977 | if (strnEQ(environ[i],nam,len) && environ[i][len] == '=') |
978 | break; /* strnEQ must come first to avoid */ |
979 | } /* potential SEGV's */ |
980 | return i; |
981 | } |
378cc40b |
982 | |
983 | #ifdef EUNICE |
79072805 |
984 | I32 |
378cc40b |
985 | unlnk(f) /* unlink all versions of a file */ |
986 | char *f; |
987 | { |
79072805 |
988 | I32 i; |
378cc40b |
989 | |
990 | for (i = 0; unlink(f) >= 0; i++) ; |
991 | return i ? 0 : -1; |
992 | } |
993 | #endif |
994 | |
7c0587c8 |
995 | #if !defined(HAS_BCOPY) || !defined(SAFE_BCOPY) |
378cc40b |
996 | char * |
7c0587c8 |
997 | my_bcopy(from,to,len) |
378cc40b |
998 | register char *from; |
999 | register char *to; |
79072805 |
1000 | register I32 len; |
378cc40b |
1001 | { |
1002 | char *retval = to; |
1003 | |
7c0587c8 |
1004 | if (from - to >= 0) { |
1005 | while (len--) |
1006 | *to++ = *from++; |
1007 | } |
1008 | else { |
1009 | to += len; |
1010 | from += len; |
1011 | while (len--) |
faf8582f |
1012 | *(--to) = *(--from); |
7c0587c8 |
1013 | } |
378cc40b |
1014 | return retval; |
1015 | } |
ffed7fef |
1016 | #endif |
378cc40b |
1017 | |
7c0587c8 |
1018 | #if !defined(HAS_BZERO) && !defined(HAS_MEMSET) |
378cc40b |
1019 | char * |
7c0587c8 |
1020 | my_bzero(loc,len) |
378cc40b |
1021 | register char *loc; |
79072805 |
1022 | register I32 len; |
378cc40b |
1023 | { |
1024 | char *retval = loc; |
1025 | |
1026 | while (len--) |
1027 | *loc++ = 0; |
1028 | return retval; |
1029 | } |
1030 | #endif |
7c0587c8 |
1031 | |
1032 | #ifndef HAS_MEMCMP |
79072805 |
1033 | I32 |
7c0587c8 |
1034 | my_memcmp(s1,s2,len) |
1035 | register unsigned char *s1; |
1036 | register unsigned char *s2; |
79072805 |
1037 | register I32 len; |
7c0587c8 |
1038 | { |
79072805 |
1039 | register I32 tmp; |
7c0587c8 |
1040 | |
1041 | while (len--) { |
1042 | if (tmp = *s1++ - *s2++) |
1043 | return tmp; |
1044 | } |
1045 | return 0; |
1046 | } |
1047 | #endif /* HAS_MEMCMP */ |
a687059c |
1048 | |
35c8bce7 |
1049 | #ifdef I_VARARGS |
fe14fcc3 |
1050 | #ifndef HAS_VPRINTF |
a687059c |
1051 | |
1052 | #ifdef CHARVSPRINTF |
1053 | char * |
1054 | #else |
1055 | int |
1056 | #endif |
1057 | vsprintf(dest, pat, args) |
1058 | char *dest, *pat, *args; |
1059 | { |
1060 | FILE fakebuf; |
1061 | |
1062 | fakebuf._ptr = dest; |
1063 | fakebuf._cnt = 32767; |
35c8bce7 |
1064 | #ifndef _IOSTRG |
1065 | #define _IOSTRG 0 |
1066 | #endif |
a687059c |
1067 | fakebuf._flag = _IOWRT|_IOSTRG; |
1068 | _doprnt(pat, args, &fakebuf); /* what a kludge */ |
1069 | (void)putc('\0', &fakebuf); |
1070 | #ifdef CHARVSPRINTF |
1071 | return(dest); |
1072 | #else |
1073 | return 0; /* perl doesn't use return value */ |
1074 | #endif |
1075 | } |
1076 | |
a687059c |
1077 | int |
1078 | vfprintf(fd, pat, args) |
1079 | FILE *fd; |
1080 | char *pat, *args; |
1081 | { |
1082 | _doprnt(pat, args, fd); |
1083 | return 0; /* wrong, but perl doesn't use the return value */ |
1084 | } |
fe14fcc3 |
1085 | #endif /* HAS_VPRINTF */ |
35c8bce7 |
1086 | #endif /* I_VARARGS */ |
a687059c |
1087 | |
988174c1 |
1088 | /* |
1089 | * I think my_swap(), htonl() and ntohl() have never been used. |
1090 | * perl.h contains last-chance references to my_swap(), my_htonl() |
1091 | * and my_ntohl(). I presume these are the intended functions; |
1092 | * but htonl() and ntohl() have the wrong names. There are no |
1093 | * functions my_htonl() and my_ntohl() defined anywhere. |
1094 | * -DWS |
1095 | */ |
a687059c |
1096 | #ifdef MYSWAP |
ffed7fef |
1097 | #if BYTEORDER != 0x4321 |
a687059c |
1098 | short |
1099 | my_swap(s) |
1100 | short s; |
1101 | { |
1102 | #if (BYTEORDER & 1) == 0 |
1103 | short result; |
1104 | |
1105 | result = ((s & 255) << 8) + ((s >> 8) & 255); |
1106 | return result; |
1107 | #else |
1108 | return s; |
1109 | #endif |
1110 | } |
1111 | |
1112 | long |
1113 | htonl(l) |
1114 | register long l; |
1115 | { |
1116 | union { |
1117 | long result; |
ffed7fef |
1118 | char c[sizeof(long)]; |
a687059c |
1119 | } u; |
1120 | |
ffed7fef |
1121 | #if BYTEORDER == 0x1234 |
a687059c |
1122 | u.c[0] = (l >> 24) & 255; |
1123 | u.c[1] = (l >> 16) & 255; |
1124 | u.c[2] = (l >> 8) & 255; |
1125 | u.c[3] = l & 255; |
1126 | return u.result; |
1127 | #else |
ffed7fef |
1128 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
463ee0b2 |
1129 | croak("Unknown BYTEORDER\n"); |
a687059c |
1130 | #else |
79072805 |
1131 | register I32 o; |
1132 | register I32 s; |
a687059c |
1133 | |
ffed7fef |
1134 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1135 | u.c[o & 0xf] = (l >> s) & 255; |
a687059c |
1136 | } |
1137 | return u.result; |
1138 | #endif |
1139 | #endif |
1140 | } |
1141 | |
1142 | long |
1143 | ntohl(l) |
1144 | register long l; |
1145 | { |
1146 | union { |
1147 | long l; |
ffed7fef |
1148 | char c[sizeof(long)]; |
a687059c |
1149 | } u; |
1150 | |
ffed7fef |
1151 | #if BYTEORDER == 0x1234 |
a687059c |
1152 | u.c[0] = (l >> 24) & 255; |
1153 | u.c[1] = (l >> 16) & 255; |
1154 | u.c[2] = (l >> 8) & 255; |
1155 | u.c[3] = l & 255; |
1156 | return u.l; |
1157 | #else |
ffed7fef |
1158 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
463ee0b2 |
1159 | croak("Unknown BYTEORDER\n"); |
a687059c |
1160 | #else |
79072805 |
1161 | register I32 o; |
1162 | register I32 s; |
a687059c |
1163 | |
1164 | u.l = l; |
1165 | l = 0; |
ffed7fef |
1166 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1167 | l |= (u.c[o & 0xf] & 255) << s; |
a687059c |
1168 | } |
1169 | return l; |
1170 | #endif |
1171 | #endif |
1172 | } |
1173 | |
ffed7fef |
1174 | #endif /* BYTEORDER != 0x4321 */ |
988174c1 |
1175 | #endif /* MYSWAP */ |
1176 | |
1177 | /* |
1178 | * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'. |
1179 | * If these functions are defined, |
1180 | * the BYTEORDER is neither 0x1234 nor 0x4321. |
1181 | * However, this is not assumed. |
1182 | * -DWS |
1183 | */ |
1184 | |
1185 | #define HTOV(name,type) \ |
1186 | type \ |
1187 | name (n) \ |
1188 | register type n; \ |
1189 | { \ |
1190 | union { \ |
1191 | type value; \ |
1192 | char c[sizeof(type)]; \ |
1193 | } u; \ |
79072805 |
1194 | register I32 i; \ |
1195 | register I32 s; \ |
988174c1 |
1196 | for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \ |
1197 | u.c[i] = (n >> s) & 0xFF; \ |
1198 | } \ |
1199 | return u.value; \ |
1200 | } |
1201 | |
1202 | #define VTOH(name,type) \ |
1203 | type \ |
1204 | name (n) \ |
1205 | register type n; \ |
1206 | { \ |
1207 | union { \ |
1208 | type value; \ |
1209 | char c[sizeof(type)]; \ |
1210 | } u; \ |
79072805 |
1211 | register I32 i; \ |
1212 | register I32 s; \ |
988174c1 |
1213 | u.value = n; \ |
1214 | n = 0; \ |
1215 | for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \ |
1216 | n += (u.c[i] & 0xFF) << s; \ |
1217 | } \ |
1218 | return n; \ |
1219 | } |
1220 | |
1221 | #if defined(HAS_HTOVS) && !defined(htovs) |
1222 | HTOV(htovs,short) |
1223 | #endif |
1224 | #if defined(HAS_HTOVL) && !defined(htovl) |
1225 | HTOV(htovl,long) |
1226 | #endif |
1227 | #if defined(HAS_VTOHS) && !defined(vtohs) |
1228 | VTOH(vtohs,short) |
1229 | #endif |
1230 | #if defined(HAS_VTOHL) && !defined(vtohl) |
1231 | VTOH(vtohl,long) |
1232 | #endif |
a687059c |
1233 | |
7c0587c8 |
1234 | #ifndef DOSISH |
a687059c |
1235 | FILE * |
79072805 |
1236 | my_popen(cmd,mode) |
a687059c |
1237 | char *cmd; |
1238 | char *mode; |
1239 | { |
1240 | int p[2]; |
79072805 |
1241 | register I32 this, that; |
1242 | register I32 pid; |
1243 | SV *sv; |
1244 | I32 doexec = strNE(cmd,"-"); |
a687059c |
1245 | |
1246 | if (pipe(p) < 0) |
1247 | return Nullfp; |
1248 | this = (*mode == 'w'); |
1249 | that = !this; |
463ee0b2 |
1250 | if (tainting) { |
1251 | if (doexec) { |
1252 | taint_env(); |
1253 | taint_proper("Insecure %s%s", "EXEC"); |
1254 | } |
d48672a2 |
1255 | } |
a687059c |
1256 | while ((pid = (doexec?vfork():fork())) < 0) { |
1257 | if (errno != EAGAIN) { |
1258 | close(p[this]); |
1259 | if (!doexec) |
463ee0b2 |
1260 | croak("Can't fork"); |
a687059c |
1261 | return Nullfp; |
1262 | } |
1263 | sleep(5); |
1264 | } |
1265 | if (pid == 0) { |
79072805 |
1266 | GV* tmpgv; |
1267 | |
a687059c |
1268 | #define THIS that |
1269 | #define THAT this |
1270 | close(p[THAT]); |
1271 | if (p[THIS] != (*mode == 'r')) { |
1272 | dup2(p[THIS], *mode == 'r'); |
1273 | close(p[THIS]); |
1274 | } |
1275 | if (doexec) { |
79072805 |
1276 | #if !defined(HAS_FCNTL) || !defined(FFt_SETFD) |
ae986130 |
1277 | int fd; |
1278 | |
1279 | #ifndef NOFILE |
1280 | #define NOFILE 20 |
1281 | #endif |
d48672a2 |
1282 | for (fd = maxsysfd + 1; fd < NOFILE; fd++) |
ae986130 |
1283 | close(fd); |
1284 | #endif |
a687059c |
1285 | do_exec(cmd); /* may or may not use the shell */ |
2304df62 |
1286 | warn("Can't exec \"%s\": %s", cmd, Strerror(errno)); |
a687059c |
1287 | _exit(1); |
1288 | } |
de3bb511 |
1289 | /*SUPPRESS 560*/ |
463ee0b2 |
1290 | if (tmpgv = gv_fetchpv("$",TRUE)) |
79072805 |
1291 | sv_setiv(GvSV(tmpgv),(I32)getpid()); |
9f68db38 |
1292 | forkprocess = 0; |
463ee0b2 |
1293 | hv_clear(pidstatus); /* we have no children */ |
a687059c |
1294 | return Nullfp; |
1295 | #undef THIS |
1296 | #undef THAT |
1297 | } |
62b28dd9 |
1298 | do_execfree(); /* free any memory malloced by child on vfork */ |
a687059c |
1299 | close(p[that]); |
62b28dd9 |
1300 | if (p[that] < p[this]) { |
1301 | dup2(p[this], p[that]); |
1302 | close(p[this]); |
1303 | p[this] = p[that]; |
1304 | } |
79072805 |
1305 | sv = *av_fetch(fdpid,p[this],TRUE); |
1306 | SvUPGRADE(sv,SVt_IV); |
463ee0b2 |
1307 | SvIVX(sv) = pid; |
a687059c |
1308 | forkprocess = pid; |
1309 | return fdopen(p[this], mode); |
1310 | } |
7c0587c8 |
1311 | #else |
1312 | #ifdef atarist |
1313 | FILE *popen(); |
1314 | FILE * |
79072805 |
1315 | my_popen(cmd,mode) |
7c0587c8 |
1316 | char *cmd; |
1317 | char *mode; |
1318 | { |
1319 | return popen(cmd, mode); |
1320 | } |
1321 | #endif |
1322 | |
1323 | #endif /* !DOSISH */ |
a687059c |
1324 | |
ae986130 |
1325 | #ifdef NOTDEF |
79072805 |
1326 | dump_fds(s) |
ae986130 |
1327 | char *s; |
1328 | { |
1329 | int fd; |
1330 | struct stat tmpstatbuf; |
1331 | |
1332 | fprintf(stderr,"%s", s); |
1333 | for (fd = 0; fd < 32; fd++) { |
1334 | if (fstat(fd,&tmpstatbuf) >= 0) |
1335 | fprintf(stderr," %d",fd); |
1336 | } |
1337 | fprintf(stderr,"\n"); |
1338 | } |
1339 | #endif |
1340 | |
fe14fcc3 |
1341 | #ifndef HAS_DUP2 |
a687059c |
1342 | dup2(oldfd,newfd) |
1343 | int oldfd; |
1344 | int newfd; |
1345 | { |
79072805 |
1346 | #if defined(HAS_FCNTL) && defined(FFt_DUPFD) |
62b28dd9 |
1347 | close(newfd); |
79072805 |
1348 | fcntl(oldfd, FFt_DUPFD, newfd); |
62b28dd9 |
1349 | #else |
d48672a2 |
1350 | int fdtmp[256]; |
79072805 |
1351 | I32 fdx = 0; |
ae986130 |
1352 | int fd; |
1353 | |
fe14fcc3 |
1354 | if (oldfd == newfd) |
1355 | return 0; |
a687059c |
1356 | close(newfd); |
ae986130 |
1357 | while ((fd = dup(oldfd)) != newfd) /* good enough for low fd's */ |
1358 | fdtmp[fdx++] = fd; |
1359 | while (fdx > 0) |
1360 | close(fdtmp[--fdx]); |
62b28dd9 |
1361 | #endif |
a687059c |
1362 | } |
1363 | #endif |
1364 | |
7c0587c8 |
1365 | #ifndef DOSISH |
79072805 |
1366 | I32 |
1367 | my_pclose(ptr) |
a687059c |
1368 | FILE *ptr; |
1369 | { |
a687059c |
1370 | #ifdef VOIDSIG |
1371 | void (*hstat)(), (*istat)(), (*qstat)(); |
1372 | #else |
1373 | int (*hstat)(), (*istat)(), (*qstat)(); |
1374 | #endif |
1375 | int status; |
79072805 |
1376 | SV *sv; |
20188a90 |
1377 | int pid; |
a687059c |
1378 | |
79072805 |
1379 | sv = *av_fetch(fdpid,fileno(ptr),TRUE); |
463ee0b2 |
1380 | pid = SvIVX(sv); |
79072805 |
1381 | av_store(fdpid,fileno(ptr),Nullsv); |
a687059c |
1382 | fclose(ptr); |
7c0587c8 |
1383 | #ifdef UTS |
1384 | if(kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */ |
1385 | #endif |
a687059c |
1386 | hstat = signal(SIGHUP, SIG_IGN); |
1387 | istat = signal(SIGINT, SIG_IGN); |
1388 | qstat = signal(SIGQUIT, SIG_IGN); |
20188a90 |
1389 | pid = wait4pid(pid, &status, 0); |
1390 | signal(SIGHUP, hstat); |
1391 | signal(SIGINT, istat); |
1392 | signal(SIGQUIT, qstat); |
1393 | return(pid < 0 ? pid : status); |
1394 | } |
1395 | |
79072805 |
1396 | I32 |
20188a90 |
1397 | wait4pid(pid,statusp,flags) |
1398 | int pid; |
1399 | int *statusp; |
1400 | int flags; |
1401 | { |
79072805 |
1402 | I32 result; |
1403 | SV *sv; |
1404 | SV** svp; |
20188a90 |
1405 | char spid[16]; |
1406 | |
1407 | if (!pid) |
1408 | return -1; |
20188a90 |
1409 | if (pid > 0) { |
1410 | sprintf(spid, "%d", pid); |
79072805 |
1411 | svp = hv_fetch(pidstatus,spid,strlen(spid),FALSE); |
1412 | if (svp && *svp != &sv_undef) { |
463ee0b2 |
1413 | *statusp = SvIVX(*svp); |
79072805 |
1414 | hv_delete(pidstatus,spid,strlen(spid)); |
20188a90 |
1415 | return pid; |
1416 | } |
1417 | } |
1418 | else { |
79072805 |
1419 | HE *entry; |
20188a90 |
1420 | |
79072805 |
1421 | hv_iterinit(pidstatus); |
1422 | if (entry = hv_iternext(pidstatus)) { |
1423 | pid = atoi(hv_iterkey(entry,statusp)); |
1424 | sv = hv_iterval(pidstatus,entry); |
463ee0b2 |
1425 | *statusp = SvIVX(sv); |
20188a90 |
1426 | sprintf(spid, "%d", pid); |
79072805 |
1427 | hv_delete(pidstatus,spid,strlen(spid)); |
20188a90 |
1428 | return pid; |
1429 | } |
1430 | } |
79072805 |
1431 | #ifdef HAS_WAIT4 |
1432 | return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *)); |
1433 | #else |
1434 | #ifdef HAS_WAITPID |
1435 | return waitpid(pid,statusp,flags); |
1436 | #else |
20188a90 |
1437 | if (flags) |
463ee0b2 |
1438 | croak("Can't do waitpid with flags"); |
a687059c |
1439 | else { |
20188a90 |
1440 | while ((result = wait(statusp)) != pid && pid > 0 && result >= 0) |
1441 | pidgone(result,*statusp); |
a687059c |
1442 | if (result < 0) |
20188a90 |
1443 | *statusp = -1; |
a687059c |
1444 | } |
e5d73d77 |
1445 | return result; |
a687059c |
1446 | #endif |
20188a90 |
1447 | #endif |
a687059c |
1448 | } |
7c0587c8 |
1449 | #endif /* !DOSISH */ |
a687059c |
1450 | |
7c0587c8 |
1451 | void |
de3bb511 |
1452 | /*SUPPRESS 590*/ |
a687059c |
1453 | pidgone(pid,status) |
1454 | int pid; |
1455 | int status; |
1456 | { |
79072805 |
1457 | register SV *sv; |
20188a90 |
1458 | char spid[16]; |
a687059c |
1459 | |
20188a90 |
1460 | sprintf(spid, "%d", pid); |
79072805 |
1461 | sv = *hv_fetch(pidstatus,spid,strlen(spid),TRUE); |
1462 | SvUPGRADE(sv,SVt_IV); |
463ee0b2 |
1463 | SvIVX(sv) = status; |
20188a90 |
1464 | return; |
a687059c |
1465 | } |
1466 | |
7c0587c8 |
1467 | #ifdef atarist |
1468 | int pclose(); |
79072805 |
1469 | I32 |
1470 | my_pclose(ptr) |
7c0587c8 |
1471 | FILE *ptr; |
a687059c |
1472 | { |
7c0587c8 |
1473 | return pclose(ptr); |
a687059c |
1474 | } |
7c0587c8 |
1475 | #endif |
9f68db38 |
1476 | |
1477 | void |
1478 | repeatcpy(to,from,len,count) |
1479 | register char *to; |
1480 | register char *from; |
79072805 |
1481 | I32 len; |
1482 | register I32 count; |
9f68db38 |
1483 | { |
79072805 |
1484 | register I32 todo; |
9f68db38 |
1485 | register char *frombase = from; |
1486 | |
1487 | if (len == 1) { |
1488 | todo = *from; |
1489 | while (count-- > 0) |
1490 | *to++ = todo; |
1491 | return; |
1492 | } |
1493 | while (count-- > 0) { |
1494 | for (todo = len; todo > 0; todo--) { |
1495 | *to++ = *from++; |
1496 | } |
1497 | from = frombase; |
1498 | } |
1499 | } |
0f85fab0 |
1500 | |
1501 | #ifndef CASTNEGFLOAT |
463ee0b2 |
1502 | U32 |
79072805 |
1503 | cast_ulong(f) |
0f85fab0 |
1504 | double f; |
1505 | { |
1506 | long along; |
1507 | |
27e2fb84 |
1508 | #if CASTFLAGS & 2 |
34de22dd |
1509 | # define BIGDOUBLE 2147483648.0 |
1510 | if (f >= BIGDOUBLE) |
1511 | return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000; |
1512 | #endif |
0f85fab0 |
1513 | if (f >= 0.0) |
1514 | return (unsigned long)f; |
1515 | along = (long)f; |
1516 | return (unsigned long)along; |
1517 | } |
ed6116ce |
1518 | # undef BIGDOUBLE |
1519 | #endif |
1520 | |
1521 | #ifndef CASTI32 |
1522 | I32 |
1523 | cast_i32(f) |
1524 | double f; |
1525 | { |
1526 | # define BIGDOUBLE 2147483648.0 /* Assume 32 bit int's ! */ |
1527 | # define BIGNEGDOUBLE (-2147483648.0) |
1528 | if (f >= BIGDOUBLE) |
1529 | return (I32)fmod(f, BIGDOUBLE); |
1530 | if (f <= BIGNEGDOUBLE) |
1531 | return (I32)fmod(f, BIGNEGDOUBLE); |
1532 | return (I32) f; |
1533 | } |
1534 | # undef BIGDOUBLE |
1535 | # undef BIGNEGDOUBLE |
0f85fab0 |
1536 | #endif |
62b28dd9 |
1537 | |
fe14fcc3 |
1538 | #ifndef HAS_RENAME |
79072805 |
1539 | I32 |
62b28dd9 |
1540 | same_dirent(a,b) |
1541 | char *a; |
1542 | char *b; |
1543 | { |
93a17b20 |
1544 | char *fa = strrchr(a,'/'); |
1545 | char *fb = strrchr(b,'/'); |
62b28dd9 |
1546 | struct stat tmpstatbuf1; |
1547 | struct stat tmpstatbuf2; |
1548 | #ifndef MAXPATHLEN |
1549 | #define MAXPATHLEN 1024 |
1550 | #endif |
1551 | char tmpbuf[MAXPATHLEN+1]; |
1552 | |
1553 | if (fa) |
1554 | fa++; |
1555 | else |
1556 | fa = a; |
1557 | if (fb) |
1558 | fb++; |
1559 | else |
1560 | fb = b; |
1561 | if (strNE(a,b)) |
1562 | return FALSE; |
1563 | if (fa == a) |
6eb13c3b |
1564 | strcpy(tmpbuf,"."); |
62b28dd9 |
1565 | else |
1566 | strncpy(tmpbuf, a, fa - a); |
1567 | if (stat(tmpbuf, &tmpstatbuf1) < 0) |
1568 | return FALSE; |
1569 | if (fb == b) |
6eb13c3b |
1570 | strcpy(tmpbuf,"."); |
62b28dd9 |
1571 | else |
1572 | strncpy(tmpbuf, b, fb - b); |
1573 | if (stat(tmpbuf, &tmpstatbuf2) < 0) |
1574 | return FALSE; |
1575 | return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev && |
1576 | tmpstatbuf1.st_ino == tmpstatbuf2.st_ino; |
1577 | } |
fe14fcc3 |
1578 | #endif /* !HAS_RENAME */ |
1579 | |
1580 | unsigned long |
79072805 |
1581 | scan_oct(start, len, retlen) |
fe14fcc3 |
1582 | char *start; |
79072805 |
1583 | I32 len; |
1584 | I32 *retlen; |
fe14fcc3 |
1585 | { |
1586 | register char *s = start; |
1587 | register unsigned long retval = 0; |
1588 | |
1589 | while (len-- && *s >= '0' && *s <= '7') { |
1590 | retval <<= 3; |
1591 | retval |= *s++ - '0'; |
1592 | } |
1593 | *retlen = s - start; |
1594 | return retval; |
1595 | } |
1596 | |
1597 | unsigned long |
79072805 |
1598 | scan_hex(start, len, retlen) |
fe14fcc3 |
1599 | char *start; |
79072805 |
1600 | I32 len; |
1601 | I32 *retlen; |
fe14fcc3 |
1602 | { |
1603 | register char *s = start; |
1604 | register unsigned long retval = 0; |
1605 | char *tmp; |
1606 | |
93a17b20 |
1607 | while (len-- && *s && (tmp = strchr(hexdigit, *s))) { |
fe14fcc3 |
1608 | retval <<= 4; |
1609 | retval |= (tmp - hexdigit) & 15; |
1610 | s++; |
1611 | } |
1612 | *retlen = s - start; |
1613 | return retval; |
1614 | } |