Commit | Line | Data |
a0d0e21e |
1 | /* util.c |
a687059c |
2 | * |
a0d0e21e |
3 | * Copyright (c) 1991-1994, 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 | * |
8d063cd8 |
8 | */ |
a0d0e21e |
9 | |
10 | /* |
11 | * "Very useful, no doubt, that was to Saruman; yet it seems that he was |
12 | * not content." --Gandalf |
13 | */ |
8d063cd8 |
14 | |
8d063cd8 |
15 | #include "EXTERN.h" |
8d063cd8 |
16 | #include "perl.h" |
62b28dd9 |
17 | |
6eb13c3b |
18 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
a687059c |
19 | #include <signal.h> |
62b28dd9 |
20 | #endif |
a687059c |
21 | |
85e6fe83 |
22 | #ifdef I_UNISTD |
8990e307 |
23 | # include <unistd.h> |
24 | #endif |
25 | |
a687059c |
26 | #ifdef I_VFORK |
27 | # include <vfork.h> |
28 | #endif |
29 | |
fe14fcc3 |
30 | #ifdef I_FCNTL |
31 | # include <fcntl.h> |
32 | #endif |
33 | #ifdef I_SYS_FILE |
34 | # include <sys/file.h> |
35 | #endif |
36 | |
8d063cd8 |
37 | #define FLUSH |
8d063cd8 |
38 | |
a0d0e21e |
39 | #ifdef LEAKTEST |
40 | static void xstat _((void)); |
41 | #endif |
42 | |
de3bb511 |
43 | #ifndef safemalloc |
44 | |
8d063cd8 |
45 | /* paranoid version of malloc */ |
46 | |
a687059c |
47 | /* NOTE: Do not call the next three routines directly. Use the macros |
48 | * in handy.h, so that we can easily redefine everything to do tracking of |
49 | * allocated hunks back to the original New to track down any memory leaks. |
50 | */ |
51 | |
8d063cd8 |
52 | char * |
53 | safemalloc(size) |
62b28dd9 |
54 | #ifdef MSDOS |
55 | unsigned long size; |
56 | #else |
8d063cd8 |
57 | MEM_SIZE size; |
62b28dd9 |
58 | #endif /* MSDOS */ |
8d063cd8 |
59 | { |
2304df62 |
60 | char *ptr; |
62b28dd9 |
61 | #ifdef MSDOS |
62 | if (size > 0xffff) { |
63 | fprintf(stderr, "Allocation too large: %lx\n", size) FLUSH; |
79072805 |
64 | my_exit(1); |
62b28dd9 |
65 | } |
66 | #endif /* MSDOS */ |
34de22dd |
67 | #ifdef DEBUGGING |
68 | if ((long)size < 0) |
463ee0b2 |
69 | croak("panic: malloc"); |
34de22dd |
70 | #endif |
8d063cd8 |
71 | ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
79072805 |
72 | #if !(defined(I286) || defined(atarist)) |
73 | DEBUG_m(fprintf(stderr,"0x%x: (%05d) malloc %ld bytes\n",ptr,an++,(long)size)); |
74 | #else |
75 | DEBUG_m(fprintf(stderr,"0x%lx: (%05d) malloc %ld bytes\n",ptr,an++,(long)size)); |
8d063cd8 |
76 | #endif |
77 | if (ptr != Nullch) |
78 | return ptr; |
7c0587c8 |
79 | else if (nomemok) |
80 | return Nullch; |
8d063cd8 |
81 | else { |
79072805 |
82 | fputs(no_mem,stderr) FLUSH; |
83 | my_exit(1); |
8d063cd8 |
84 | } |
85 | /*NOTREACHED*/ |
86 | } |
87 | |
88 | /* paranoid version of realloc */ |
89 | |
90 | char * |
91 | saferealloc(where,size) |
92 | char *where; |
62b28dd9 |
93 | #ifndef MSDOS |
8d063cd8 |
94 | MEM_SIZE size; |
62b28dd9 |
95 | #else |
96 | unsigned long size; |
97 | #endif /* MSDOS */ |
8d063cd8 |
98 | { |
99 | char *ptr; |
d48672a2 |
100 | #ifndef STANDARD_C |
8d063cd8 |
101 | char *realloc(); |
d48672a2 |
102 | #endif /* ! STANDARD_C */ |
8d063cd8 |
103 | |
62b28dd9 |
104 | #ifdef MSDOS |
105 | if (size > 0xffff) { |
106 | fprintf(stderr, "Reallocation too large: %lx\n", size) FLUSH; |
79072805 |
107 | my_exit(1); |
62b28dd9 |
108 | } |
109 | #endif /* MSDOS */ |
378cc40b |
110 | if (!where) |
463ee0b2 |
111 | croak("Null realloc"); |
34de22dd |
112 | #ifdef DEBUGGING |
113 | if ((long)size < 0) |
463ee0b2 |
114 | croak("panic: realloc"); |
34de22dd |
115 | #endif |
8d063cd8 |
116 | ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */ |
79072805 |
117 | |
118 | #if !(defined(I286) || defined(atarist)) |
119 | DEBUG_m( { |
8d063cd8 |
120 | fprintf(stderr,"0x%x: (%05d) rfree\n",where,an++); |
7c0587c8 |
121 | fprintf(stderr,"0x%x: (%05d) realloc %ld bytes\n",ptr,an++,(long)size); |
79072805 |
122 | } ) |
123 | #else |
124 | DEBUG_m( { |
a687059c |
125 | fprintf(stderr,"0x%lx: (%05d) rfree\n",where,an++); |
7c0587c8 |
126 | fprintf(stderr,"0x%lx: (%05d) realloc %ld bytes\n",ptr,an++,(long)size); |
79072805 |
127 | } ) |
8d063cd8 |
128 | #endif |
79072805 |
129 | |
8d063cd8 |
130 | if (ptr != Nullch) |
131 | return ptr; |
7c0587c8 |
132 | else if (nomemok) |
133 | return Nullch; |
8d063cd8 |
134 | else { |
79072805 |
135 | fputs(no_mem,stderr) FLUSH; |
136 | my_exit(1); |
8d063cd8 |
137 | } |
138 | /*NOTREACHED*/ |
139 | } |
140 | |
141 | /* safe version of free */ |
142 | |
a687059c |
143 | void |
8d063cd8 |
144 | safefree(where) |
145 | char *where; |
146 | { |
79072805 |
147 | #if !(defined(I286) || defined(atarist)) |
148 | DEBUG_m( fprintf(stderr,"0x%x: (%05d) free\n",where,an++)); |
149 | #else |
150 | DEBUG_m( fprintf(stderr,"0x%lx: (%05d) free\n",where,an++)); |
8d063cd8 |
151 | #endif |
378cc40b |
152 | if (where) { |
de3bb511 |
153 | /*SUPPRESS 701*/ |
378cc40b |
154 | free(where); |
155 | } |
8d063cd8 |
156 | } |
157 | |
de3bb511 |
158 | #endif /* !safemalloc */ |
159 | |
a687059c |
160 | #ifdef LEAKTEST |
161 | |
162 | #define ALIGN sizeof(long) |
8d063cd8 |
163 | |
164 | char * |
a687059c |
165 | safexmalloc(x,size) |
79072805 |
166 | I32 x; |
a687059c |
167 | MEM_SIZE size; |
8d063cd8 |
168 | { |
a687059c |
169 | register char *where; |
8d063cd8 |
170 | |
a687059c |
171 | where = safemalloc(size + ALIGN); |
172 | xcount[x]++; |
173 | where[0] = x % 100; |
174 | where[1] = x / 100; |
175 | return where + ALIGN; |
8d063cd8 |
176 | } |
8d063cd8 |
177 | |
178 | char * |
a687059c |
179 | safexrealloc(where,size) |
180 | char *where; |
181 | MEM_SIZE size; |
182 | { |
a0d0e21e |
183 | register char *new = saferealloc(where - ALIGN, size + ALIGN); |
184 | return new + ALIGN; |
a687059c |
185 | } |
186 | |
187 | void |
188 | safexfree(where) |
189 | char *where; |
190 | { |
79072805 |
191 | I32 x; |
a687059c |
192 | |
193 | if (!where) |
194 | return; |
195 | where -= ALIGN; |
196 | x = where[0] + 100 * where[1]; |
197 | xcount[x]--; |
198 | safefree(where); |
199 | } |
200 | |
7c0587c8 |
201 | static void |
a687059c |
202 | xstat() |
8d063cd8 |
203 | { |
79072805 |
204 | register I32 i; |
8d063cd8 |
205 | |
a687059c |
206 | for (i = 0; i < MAXXCOUNT; i++) { |
de3bb511 |
207 | if (xcount[i] > lastxcount[i]) { |
a687059c |
208 | fprintf(stderr,"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]); |
209 | lastxcount[i] = xcount[i]; |
8d063cd8 |
210 | } |
211 | } |
8d063cd8 |
212 | } |
a687059c |
213 | |
214 | #endif /* LEAKTEST */ |
8d063cd8 |
215 | |
216 | /* copy a string up to some (non-backslashed) delimiter, if any */ |
217 | |
218 | char * |
a687059c |
219 | cpytill(to,from,fromend,delim,retlen) |
62b28dd9 |
220 | register char *to; |
221 | register char *from; |
a687059c |
222 | register char *fromend; |
a0d0e21e |
223 | register int delim; |
79072805 |
224 | I32 *retlen; |
8d063cd8 |
225 | { |
a687059c |
226 | char *origto = to; |
227 | |
228 | for (; from < fromend; from++,to++) { |
378cc40b |
229 | if (*from == '\\') { |
230 | if (from[1] == delim) |
231 | from++; |
232 | else if (from[1] == '\\') |
233 | *to++ = *from++; |
234 | } |
8d063cd8 |
235 | else if (*from == delim) |
236 | break; |
237 | *to = *from; |
238 | } |
239 | *to = '\0'; |
a687059c |
240 | *retlen = to - origto; |
8d063cd8 |
241 | return from; |
242 | } |
243 | |
244 | /* return ptr to little string in big string, NULL if not found */ |
378cc40b |
245 | /* This routine was donated by Corey Satten. */ |
8d063cd8 |
246 | |
247 | char * |
248 | instr(big, little) |
378cc40b |
249 | register char *big; |
250 | register char *little; |
251 | { |
252 | register char *s, *x; |
79072805 |
253 | register I32 first; |
378cc40b |
254 | |
a687059c |
255 | if (!little) |
256 | return big; |
257 | first = *little++; |
378cc40b |
258 | if (!first) |
259 | return big; |
260 | while (*big) { |
261 | if (*big++ != first) |
262 | continue; |
263 | for (x=big,s=little; *s; /**/ ) { |
264 | if (!*x) |
265 | return Nullch; |
266 | if (*s++ != *x++) { |
267 | s--; |
268 | break; |
269 | } |
270 | } |
271 | if (!*s) |
272 | return big-1; |
273 | } |
274 | return Nullch; |
275 | } |
8d063cd8 |
276 | |
a687059c |
277 | /* same as instr but allow embedded nulls */ |
278 | |
279 | char * |
280 | ninstr(big, bigend, little, lend) |
281 | register char *big; |
282 | register char *bigend; |
283 | char *little; |
284 | char *lend; |
8d063cd8 |
285 | { |
a687059c |
286 | register char *s, *x; |
79072805 |
287 | register I32 first = *little; |
a687059c |
288 | register char *littleend = lend; |
378cc40b |
289 | |
a0d0e21e |
290 | if (!first && little >= littleend) |
a687059c |
291 | return big; |
de3bb511 |
292 | if (bigend - big < littleend - little) |
293 | return Nullch; |
a687059c |
294 | bigend -= littleend - little++; |
295 | while (big <= bigend) { |
296 | if (*big++ != first) |
297 | continue; |
298 | for (x=big,s=little; s < littleend; /**/ ) { |
299 | if (*s++ != *x++) { |
300 | s--; |
301 | break; |
302 | } |
303 | } |
304 | if (s >= littleend) |
305 | return big-1; |
378cc40b |
306 | } |
a687059c |
307 | return Nullch; |
308 | } |
309 | |
310 | /* reverse of the above--find last substring */ |
311 | |
312 | char * |
313 | rninstr(big, bigend, little, lend) |
314 | register char *big; |
315 | char *bigend; |
316 | char *little; |
317 | char *lend; |
318 | { |
319 | register char *bigbeg; |
320 | register char *s, *x; |
79072805 |
321 | register I32 first = *little; |
a687059c |
322 | register char *littleend = lend; |
323 | |
a0d0e21e |
324 | if (!first && little >= littleend) |
a687059c |
325 | return bigend; |
326 | bigbeg = big; |
327 | big = bigend - (littleend - little++); |
328 | while (big >= bigbeg) { |
329 | if (*big-- != first) |
330 | continue; |
331 | for (x=big+2,s=little; s < littleend; /**/ ) { |
332 | if (*s++ != *x++) { |
333 | s--; |
334 | break; |
335 | } |
336 | } |
337 | if (s >= littleend) |
338 | return big+1; |
378cc40b |
339 | } |
a687059c |
340 | return Nullch; |
378cc40b |
341 | } |
a687059c |
342 | |
378cc40b |
343 | void |
79072805 |
344 | fbm_compile(sv, iflag) |
345 | SV *sv; |
346 | I32 iflag; |
378cc40b |
347 | { |
a687059c |
348 | register unsigned char *s; |
349 | register unsigned char *table; |
79072805 |
350 | register U32 i; |
351 | register U32 len = SvCUR(sv); |
352 | I32 rarest = 0; |
353 | U32 frequency = 256; |
354 | |
355 | Sv_Grow(sv,len+258); |
463ee0b2 |
356 | table = (unsigned char*)(SvPVX(sv) + len + 1); |
a687059c |
357 | s = table - 2; |
358 | for (i = 0; i < 256; i++) { |
378cc40b |
359 | table[i] = len; |
360 | } |
361 | i = 0; |
463ee0b2 |
362 | while (s >= (unsigned char*)(SvPVX(sv))) |
a687059c |
363 | { |
364 | if (table[*s] == len) { |
365 | #ifndef pdp11 |
366 | if (iflag) |
367 | table[*s] = table[fold[*s]] = i; |
368 | #else |
369 | if (iflag) { |
79072805 |
370 | I32 j; |
a687059c |
371 | j = fold[*s]; |
372 | table[j] = i; |
373 | table[*s] = i; |
374 | } |
375 | #endif /* pdp11 */ |
376 | else |
377 | table[*s] = i; |
378 | } |
378cc40b |
379 | s--,i++; |
380 | } |
79072805 |
381 | sv_upgrade(sv, SVt_PVBM); |
a0d0e21e |
382 | sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */ |
79072805 |
383 | SvVALID_on(sv); |
378cc40b |
384 | |
463ee0b2 |
385 | s = (unsigned char*)(SvPVX(sv)); /* deeper magic */ |
a687059c |
386 | if (iflag) { |
79072805 |
387 | register U32 tmp, foldtmp; |
388 | SvCASEFOLD_on(sv); |
a687059c |
389 | for (i = 0; i < len; i++) { |
390 | tmp=freq[s[i]]; |
391 | foldtmp=freq[fold[s[i]]]; |
392 | if (tmp < frequency && foldtmp < frequency) { |
393 | rarest = i; |
394 | /* choose most frequent among the two */ |
395 | frequency = (tmp > foldtmp) ? tmp : foldtmp; |
396 | } |
397 | } |
398 | } |
399 | else { |
400 | for (i = 0; i < len; i++) { |
401 | if (freq[s[i]] < frequency) { |
402 | rarest = i; |
403 | frequency = freq[s[i]]; |
404 | } |
378cc40b |
405 | } |
406 | } |
79072805 |
407 | BmRARE(sv) = s[rarest]; |
408 | BmPREVIOUS(sv) = rarest; |
409 | DEBUG_r(fprintf(stderr,"rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv))); |
378cc40b |
410 | } |
411 | |
378cc40b |
412 | char * |
79072805 |
413 | fbm_instr(big, bigend, littlestr) |
a687059c |
414 | unsigned char *big; |
415 | register unsigned char *bigend; |
79072805 |
416 | SV *littlestr; |
378cc40b |
417 | { |
a687059c |
418 | register unsigned char *s; |
79072805 |
419 | register I32 tmp; |
420 | register I32 littlelen; |
a687059c |
421 | register unsigned char *little; |
422 | register unsigned char *table; |
423 | register unsigned char *olds; |
424 | register unsigned char *oldlittle; |
378cc40b |
425 | |
79072805 |
426 | if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) { |
a0d0e21e |
427 | STRLEN len; |
428 | char *l = SvPV(littlestr,len); |
429 | if (!len) |
d48672a2 |
430 | return (char*)big; |
a0d0e21e |
431 | return ninstr((char*)big,(char*)bigend, l, l + len); |
d48672a2 |
432 | } |
378cc40b |
433 | |
79072805 |
434 | littlelen = SvCUR(littlestr); |
435 | if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */ |
0f85fab0 |
436 | if (littlelen > bigend - big) |
437 | return Nullch; |
463ee0b2 |
438 | little = (unsigned char*)SvPVX(littlestr); |
79072805 |
439 | if (SvCASEFOLD(littlestr)) { /* oops, fake it */ |
a687059c |
440 | big = bigend - littlelen; /* just start near end */ |
441 | if (bigend[-1] == '\n' && little[littlelen-1] != '\n') |
442 | big--; |
378cc40b |
443 | } |
444 | else { |
a687059c |
445 | s = bigend - littlelen; |
446 | if (*s == *little && bcmp(s,little,littlelen)==0) |
447 | return (char*)s; /* how sweet it is */ |
34de22dd |
448 | else if (bigend[-1] == '\n' && little[littlelen-1] != '\n' |
449 | && s > big) { |
a687059c |
450 | s--; |
451 | if (*s == *little && bcmp(s,little,littlelen)==0) |
452 | return (char*)s; |
453 | } |
454 | return Nullch; |
455 | } |
456 | } |
463ee0b2 |
457 | table = (unsigned char*)(SvPVX(littlestr) + littlelen + 1); |
62b28dd9 |
458 | if (--littlelen >= bigend - big) |
459 | return Nullch; |
460 | s = big + littlelen; |
a687059c |
461 | oldlittle = little = table - 2; |
79072805 |
462 | if (SvCASEFOLD(littlestr)) { /* case insensitive? */ |
20188a90 |
463 | if (s < bigend) { |
a687059c |
464 | top1: |
de3bb511 |
465 | /*SUPPRESS 560*/ |
a687059c |
466 | if (tmp = table[*s]) { |
62b28dd9 |
467 | #ifdef POINTERRIGOR |
468 | if (bigend - s > tmp) { |
469 | s += tmp; |
470 | goto top1; |
471 | } |
472 | #else |
473 | if ((s += tmp) < bigend) |
474 | goto top1; |
475 | #endif |
476 | return Nullch; |
a687059c |
477 | } |
478 | else { |
479 | tmp = littlelen; /* less expensive than calling strncmp() */ |
480 | olds = s; |
481 | while (tmp--) { |
482 | if (*--s == *--little || fold[*s] == *little) |
483 | continue; |
484 | s = olds + 1; /* here we pay the price for failure */ |
485 | little = oldlittle; |
486 | if (s < bigend) /* fake up continue to outer loop */ |
487 | goto top1; |
488 | return Nullch; |
489 | } |
a687059c |
490 | return (char *)s; |
a687059c |
491 | } |
492 | } |
493 | } |
494 | else { |
20188a90 |
495 | if (s < bigend) { |
a687059c |
496 | top2: |
de3bb511 |
497 | /*SUPPRESS 560*/ |
a687059c |
498 | if (tmp = table[*s]) { |
62b28dd9 |
499 | #ifdef POINTERRIGOR |
500 | if (bigend - s > tmp) { |
501 | s += tmp; |
502 | goto top2; |
503 | } |
504 | #else |
505 | if ((s += tmp) < bigend) |
506 | goto top2; |
507 | #endif |
508 | return Nullch; |
a687059c |
509 | } |
510 | else { |
511 | tmp = littlelen; /* less expensive than calling strncmp() */ |
512 | olds = s; |
513 | while (tmp--) { |
514 | if (*--s == *--little) |
515 | continue; |
516 | s = olds + 1; /* here we pay the price for failure */ |
517 | little = oldlittle; |
518 | if (s < bigend) /* fake up continue to outer loop */ |
519 | goto top2; |
520 | return Nullch; |
521 | } |
a687059c |
522 | return (char *)s; |
378cc40b |
523 | } |
378cc40b |
524 | } |
525 | } |
526 | return Nullch; |
527 | } |
528 | |
529 | char * |
530 | screaminstr(bigstr, littlestr) |
79072805 |
531 | SV *bigstr; |
532 | SV *littlestr; |
378cc40b |
533 | { |
a687059c |
534 | register unsigned char *s, *x; |
535 | register unsigned char *big; |
79072805 |
536 | register I32 pos; |
537 | register I32 previous; |
538 | register I32 first; |
a687059c |
539 | register unsigned char *little; |
540 | register unsigned char *bigend; |
541 | register unsigned char *littleend; |
378cc40b |
542 | |
79072805 |
543 | if ((pos = screamfirst[BmRARE(littlestr)]) < 0) |
378cc40b |
544 | return Nullch; |
463ee0b2 |
545 | little = (unsigned char *)(SvPVX(littlestr)); |
79072805 |
546 | littleend = little + SvCUR(littlestr); |
378cc40b |
547 | first = *little++; |
79072805 |
548 | previous = BmPREVIOUS(littlestr); |
463ee0b2 |
549 | big = (unsigned char *)(SvPVX(bigstr)); |
79072805 |
550 | bigend = big + SvCUR(bigstr); |
378cc40b |
551 | while (pos < previous) { |
552 | if (!(pos += screamnext[pos])) |
553 | return Nullch; |
554 | } |
de3bb511 |
555 | #ifdef POINTERRIGOR |
79072805 |
556 | if (SvCASEFOLD(littlestr)) { /* case insignificant? */ |
a687059c |
557 | do { |
988174c1 |
558 | if (big[pos-previous] != first && big[pos-previous] != fold[first]) |
559 | continue; |
de3bb511 |
560 | for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) { |
561 | if (x >= bigend) |
562 | return Nullch; |
563 | if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) { |
564 | s--; |
565 | break; |
566 | } |
567 | } |
568 | if (s == littleend) |
de3bb511 |
569 | return (char *)(big+pos-previous); |
de3bb511 |
570 | } while ( |
de3bb511 |
571 | pos += screamnext[pos] /* does this goof up anywhere? */ |
de3bb511 |
572 | ); |
573 | } |
574 | else { |
575 | do { |
988174c1 |
576 | if (big[pos-previous] != first) |
577 | continue; |
de3bb511 |
578 | for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) { |
579 | if (x >= bigend) |
580 | return Nullch; |
581 | if (*s++ != *x++) { |
582 | s--; |
583 | break; |
584 | } |
585 | } |
586 | if (s == littleend) |
de3bb511 |
587 | return (char *)(big+pos-previous); |
79072805 |
588 | } while ( pos += screamnext[pos] ); |
de3bb511 |
589 | } |
590 | #else /* !POINTERRIGOR */ |
591 | big -= previous; |
79072805 |
592 | if (SvCASEFOLD(littlestr)) { /* case insignificant? */ |
de3bb511 |
593 | do { |
988174c1 |
594 | if (big[pos] != first && big[pos] != fold[first]) |
595 | continue; |
a687059c |
596 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { |
597 | if (x >= bigend) |
598 | return Nullch; |
599 | if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) { |
600 | s--; |
601 | break; |
602 | } |
603 | } |
604 | if (s == littleend) |
a687059c |
605 | return (char *)(big+pos); |
a687059c |
606 | } while ( |
a687059c |
607 | pos += screamnext[pos] /* does this goof up anywhere? */ |
a687059c |
608 | ); |
609 | } |
610 | else { |
611 | do { |
988174c1 |
612 | if (big[pos] != first) |
613 | continue; |
a687059c |
614 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { |
615 | if (x >= bigend) |
616 | return Nullch; |
617 | if (*s++ != *x++) { |
618 | s--; |
619 | break; |
620 | } |
378cc40b |
621 | } |
a687059c |
622 | if (s == littleend) |
a687059c |
623 | return (char *)(big+pos); |
a687059c |
624 | } while ( |
a687059c |
625 | pos += screamnext[pos] |
a687059c |
626 | ); |
627 | } |
de3bb511 |
628 | #endif /* POINTERRIGOR */ |
8d063cd8 |
629 | return Nullch; |
630 | } |
631 | |
79072805 |
632 | I32 |
633 | ibcmp(a,b,len) |
a0d0e21e |
634 | register U8 *a; |
635 | register U8 *b; |
79072805 |
636 | register I32 len; |
637 | { |
638 | while (len--) { |
639 | if (*a == *b) { |
640 | a++,b++; |
641 | continue; |
642 | } |
643 | if (fold[*a++] == *b++) |
644 | continue; |
645 | return 1; |
646 | } |
647 | return 0; |
648 | } |
649 | |
8d063cd8 |
650 | /* copy a string to a safe spot */ |
651 | |
652 | char * |
a0d0e21e |
653 | savepv(sv) |
79072805 |
654 | char *sv; |
8d063cd8 |
655 | { |
a687059c |
656 | register char *newaddr; |
8d063cd8 |
657 | |
79072805 |
658 | New(902,newaddr,strlen(sv)+1,char); |
659 | (void)strcpy(newaddr,sv); |
8d063cd8 |
660 | return newaddr; |
661 | } |
662 | |
a687059c |
663 | /* same thing but with a known length */ |
664 | |
665 | char * |
a0d0e21e |
666 | savepvn(sv, len) |
79072805 |
667 | char *sv; |
668 | register I32 len; |
a687059c |
669 | { |
670 | register char *newaddr; |
671 | |
672 | New(903,newaddr,len+1,char); |
79072805 |
673 | Copy(sv,newaddr,len,char); /* might not be null terminated */ |
a687059c |
674 | newaddr[len] = '\0'; /* is now */ |
675 | return newaddr; |
676 | } |
677 | |
a0d0e21e |
678 | #if !defined(I_STDARG) && !defined(I_VARARGS) |
8d063cd8 |
679 | |
8990e307 |
680 | /* |
681 | * Fallback on the old hackers way of doing varargs |
682 | */ |
8d063cd8 |
683 | |
378cc40b |
684 | /*VARARGS1*/ |
7c0587c8 |
685 | char * |
378cc40b |
686 | mess(pat,a1,a2,a3,a4) |
687 | char *pat; |
a687059c |
688 | long a1, a2, a3, a4; |
378cc40b |
689 | { |
690 | char *s; |
79072805 |
691 | I32 usermess = strEQ(pat,"%s"); |
692 | SV *tmpstr; |
378cc40b |
693 | |
a687059c |
694 | s = buf; |
de3bb511 |
695 | if (usermess) { |
8990e307 |
696 | tmpstr = sv_newmortal(); |
79072805 |
697 | sv_setpv(tmpstr, (char*)a1); |
463ee0b2 |
698 | *s++ = SvPVX(tmpstr)[SvCUR(tmpstr)-1]; |
de3bb511 |
699 | } |
700 | else { |
701 | (void)sprintf(s,pat,a1,a2,a3,a4); |
702 | s += strlen(s); |
703 | } |
704 | |
378cc40b |
705 | if (s[-1] != '\n') { |
2304df62 |
706 | if (dirty) |
707 | strcpy(s, " during global destruction.\n"); |
708 | else { |
709 | if (curcop->cop_line) { |
710 | (void)sprintf(s," at %s line %ld", |
711 | SvPVX(GvSV(curcop->cop_filegv)), (long)curcop->cop_line); |
712 | s += strlen(s); |
713 | } |
a0d0e21e |
714 | if (GvIO(last_in_gv) && |
715 | IoLINES(GvIOp(last_in_gv)) ) { |
2304df62 |
716 | (void)sprintf(s,", <%s> %s %ld", |
717 | last_in_gv == argvgv ? "" : GvENAME(last_in_gv), |
718 | strEQ(rs,"\n") ? "line" : "chunk", |
a0d0e21e |
719 | (long)IoLINES(GvIOp(last_in_gv))); |
2304df62 |
720 | s += strlen(s); |
721 | } |
722 | (void)strcpy(s,".\n"); |
378cc40b |
723 | } |
de3bb511 |
724 | if (usermess) |
79072805 |
725 | sv_catpv(tmpstr,buf+1); |
378cc40b |
726 | } |
de3bb511 |
727 | if (usermess) |
463ee0b2 |
728 | return SvPVX(tmpstr); |
de3bb511 |
729 | else |
730 | return buf; |
378cc40b |
731 | } |
732 | |
8d063cd8 |
733 | /*VARARGS1*/ |
463ee0b2 |
734 | void croak(pat,a1,a2,a3,a4) |
8d063cd8 |
735 | char *pat; |
a687059c |
736 | long a1, a2, a3, a4; |
8d063cd8 |
737 | { |
9f68db38 |
738 | char *tmps; |
de3bb511 |
739 | char *message; |
8d063cd8 |
740 | |
de3bb511 |
741 | message = mess(pat,a1,a2,a3,a4); |
a0d0e21e |
742 | if (in_eval) { |
743 | restartop = die_where(message); |
744 | longjmp(top_env, 3); |
745 | } |
de3bb511 |
746 | fputs(message,stderr); |
a687059c |
747 | (void)fflush(stderr); |
8d063cd8 |
748 | if (e_fp) |
a687059c |
749 | (void)UNLINK(e_tmpname); |
378cc40b |
750 | statusvalue >>= 8; |
79072805 |
751 | my_exit((I32)((errno&255)?errno:((statusvalue&255)?statusvalue:255))); |
378cc40b |
752 | } |
753 | |
754 | /*VARARGS1*/ |
7c0587c8 |
755 | void warn(pat,a1,a2,a3,a4) |
378cc40b |
756 | char *pat; |
a687059c |
757 | long a1, a2, a3, a4; |
378cc40b |
758 | { |
de3bb511 |
759 | char *message; |
760 | |
761 | message = mess(pat,a1,a2,a3,a4); |
762 | fputs(message,stderr); |
a687059c |
763 | #ifdef LEAKTEST |
79072805 |
764 | DEBUG_L(xstat()); |
a687059c |
765 | #endif |
766 | (void)fflush(stderr); |
8d063cd8 |
767 | } |
8990e307 |
768 | |
a0d0e21e |
769 | #else /* !defined(I_STDARG) && !defined(I_VARARGS) */ |
8990e307 |
770 | |
a0d0e21e |
771 | #ifdef I_STDARG |
8990e307 |
772 | char * |
2304df62 |
773 | mess(char *pat, va_list *args) |
a687059c |
774 | #else |
775 | /*VARARGS0*/ |
de3bb511 |
776 | char * |
8990e307 |
777 | mess(pat, args) |
a687059c |
778 | char *pat; |
2304df62 |
779 | va_list *args; |
8990e307 |
780 | #endif |
781 | { |
a687059c |
782 | char *s; |
79072805 |
783 | SV *tmpstr; |
784 | I32 usermess; |
d48672a2 |
785 | #ifndef HAS_VPRINTF |
85e6fe83 |
786 | #ifdef USE_CHAR_VSPRINTF |
a687059c |
787 | char *vsprintf(); |
788 | #else |
79072805 |
789 | I32 vsprintf(); |
a687059c |
790 | #endif |
d48672a2 |
791 | #endif |
a687059c |
792 | |
de3bb511 |
793 | s = buf; |
794 | usermess = strEQ(pat, "%s"); |
795 | if (usermess) { |
8990e307 |
796 | tmpstr = sv_newmortal(); |
2304df62 |
797 | sv_setpv(tmpstr, va_arg(*args, char *)); |
463ee0b2 |
798 | *s++ = SvPVX(tmpstr)[SvCUR(tmpstr)-1]; |
de3bb511 |
799 | } |
800 | else { |
2304df62 |
801 | (void) vsprintf(s,pat,*args); |
de3bb511 |
802 | s += strlen(s); |
803 | } |
2304df62 |
804 | va_end(*args); |
a687059c |
805 | |
a687059c |
806 | if (s[-1] != '\n') { |
2304df62 |
807 | if (dirty) |
808 | strcpy(s, " during global destruction.\n"); |
809 | else { |
810 | if (curcop->cop_line) { |
811 | (void)sprintf(s," at %s line %ld", |
812 | SvPVX(GvSV(curcop->cop_filegv)), (long)curcop->cop_line); |
813 | s += strlen(s); |
814 | } |
a0d0e21e |
815 | if (GvIO(last_in_gv) && |
816 | IoLINES(GvIOp(last_in_gv)) ) { |
2304df62 |
817 | (void)sprintf(s,", <%s> %s %ld", |
818 | last_in_gv == argvgv ? "" : GvNAME(last_in_gv), |
819 | strEQ(rs,"\n") ? "line" : "chunk", |
a0d0e21e |
820 | (long)IoLINES(GvIOp(last_in_gv))); |
2304df62 |
821 | s += strlen(s); |
822 | } |
823 | (void)strcpy(s,".\n"); |
a687059c |
824 | } |
de3bb511 |
825 | if (usermess) |
79072805 |
826 | sv_catpv(tmpstr,buf+1); |
a687059c |
827 | } |
de3bb511 |
828 | |
829 | if (usermess) |
463ee0b2 |
830 | return SvPVX(tmpstr); |
de3bb511 |
831 | else |
832 | return buf; |
a687059c |
833 | } |
834 | |
8990e307 |
835 | #ifdef STANDARD_C |
79072805 |
836 | void |
8990e307 |
837 | croak(char* pat, ...) |
463ee0b2 |
838 | #else |
8990e307 |
839 | /*VARARGS0*/ |
840 | void |
841 | croak(pat, va_alist) |
842 | char *pat; |
843 | va_dcl |
463ee0b2 |
844 | #endif |
a687059c |
845 | { |
846 | va_list args; |
de3bb511 |
847 | char *message; |
a687059c |
848 | |
a0d0e21e |
849 | #ifdef I_STDARG |
8990e307 |
850 | va_start(args, pat); |
851 | #else |
a687059c |
852 | va_start(args); |
8990e307 |
853 | #endif |
2304df62 |
854 | message = mess(pat, &args); |
a687059c |
855 | va_end(args); |
a0d0e21e |
856 | if (in_eval) { |
857 | restartop = die_where(message); |
79072805 |
858 | longjmp(top_env, 3); |
a0d0e21e |
859 | } |
de3bb511 |
860 | fputs(message,stderr); |
a687059c |
861 | (void)fflush(stderr); |
862 | if (e_fp) |
863 | (void)UNLINK(e_tmpname); |
864 | statusvalue >>= 8; |
79072805 |
865 | my_exit((I32)((errno&255)?errno:((statusvalue&255)?statusvalue:255))); |
a687059c |
866 | } |
867 | |
8990e307 |
868 | void |
869 | #ifdef STANDARD_C |
870 | warn(char* pat,...) |
463ee0b2 |
871 | #else |
8990e307 |
872 | /*VARARGS0*/ |
873 | warn(pat,va_alist) |
874 | char *pat; |
875 | va_dcl |
463ee0b2 |
876 | #endif |
a687059c |
877 | { |
878 | va_list args; |
de3bb511 |
879 | char *message; |
a687059c |
880 | |
a0d0e21e |
881 | #ifdef I_STDARG |
8990e307 |
882 | va_start(args, pat); |
883 | #else |
a687059c |
884 | va_start(args); |
8990e307 |
885 | #endif |
2304df62 |
886 | message = mess(pat, &args); |
a687059c |
887 | va_end(args); |
888 | |
de3bb511 |
889 | fputs(message,stderr); |
a687059c |
890 | #ifdef LEAKTEST |
79072805 |
891 | DEBUG_L(xstat()); |
a687059c |
892 | #endif |
893 | (void)fflush(stderr); |
894 | } |
a0d0e21e |
895 | #endif /* !defined(I_STDARG) && !defined(I_VARARGS) */ |
8d063cd8 |
896 | |
a0d0e21e |
897 | #ifndef VMS /* VMS' my_setenv() is in VMS.c */ |
8d063cd8 |
898 | void |
7c0587c8 |
899 | my_setenv(nam,val) |
8d063cd8 |
900 | char *nam, *val; |
901 | { |
79072805 |
902 | register I32 i=setenv_getix(nam); /* where does it go? */ |
8d063cd8 |
903 | |
fe14fcc3 |
904 | if (environ == origenviron) { /* need we copy environment? */ |
79072805 |
905 | I32 j; |
906 | I32 max; |
fe14fcc3 |
907 | char **tmpenv; |
908 | |
de3bb511 |
909 | /*SUPPRESS 530*/ |
fe14fcc3 |
910 | for (max = i; environ[max]; max++) ; |
911 | New(901,tmpenv, max+2, char*); |
912 | for (j=0; j<max; j++) /* copy environment */ |
a0d0e21e |
913 | tmpenv[j] = savepv(environ[j]); |
fe14fcc3 |
914 | tmpenv[max] = Nullch; |
915 | environ = tmpenv; /* tell exec where it is now */ |
916 | } |
a687059c |
917 | if (!val) { |
918 | while (environ[i]) { |
919 | environ[i] = environ[i+1]; |
920 | i++; |
921 | } |
922 | return; |
923 | } |
8d063cd8 |
924 | if (!environ[i]) { /* does not exist yet */ |
fe14fcc3 |
925 | Renew(environ, i+2, char*); /* just expand it a bit */ |
8d063cd8 |
926 | environ[i+1] = Nullch; /* make sure it's null terminated */ |
927 | } |
fe14fcc3 |
928 | else |
929 | Safefree(environ[i]); |
a687059c |
930 | New(904, environ[i], strlen(nam) + strlen(val) + 2, char); |
62b28dd9 |
931 | #ifndef MSDOS |
a687059c |
932 | (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */ |
62b28dd9 |
933 | #else |
934 | /* MS-DOS requires environment variable names to be in uppercase */ |
fe14fcc3 |
935 | /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but |
936 | * some utilities and applications may break because they only look |
937 | * for upper case strings. (Fixed strupr() bug here.)] |
938 | */ |
939 | strcpy(environ[i],nam); strupr(environ[i]); |
62b28dd9 |
940 | (void)sprintf(environ[i] + strlen(nam),"=%s",val); |
941 | #endif /* MSDOS */ |
8d063cd8 |
942 | } |
943 | |
79072805 |
944 | I32 |
945 | setenv_getix(nam) |
8d063cd8 |
946 | char *nam; |
947 | { |
79072805 |
948 | register I32 i, len = strlen(nam); |
8d063cd8 |
949 | |
950 | for (i = 0; environ[i]; i++) { |
951 | if (strnEQ(environ[i],nam,len) && environ[i][len] == '=') |
952 | break; /* strnEQ must come first to avoid */ |
953 | } /* potential SEGV's */ |
954 | return i; |
955 | } |
a0d0e21e |
956 | #endif /* !VMS */ |
378cc40b |
957 | |
958 | #ifdef EUNICE |
79072805 |
959 | I32 |
378cc40b |
960 | unlnk(f) /* unlink all versions of a file */ |
961 | char *f; |
962 | { |
79072805 |
963 | I32 i; |
378cc40b |
964 | |
965 | for (i = 0; unlink(f) >= 0; i++) ; |
966 | return i ? 0 : -1; |
967 | } |
968 | #endif |
969 | |
85e6fe83 |
970 | #if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY) |
378cc40b |
971 | char * |
7c0587c8 |
972 | my_bcopy(from,to,len) |
378cc40b |
973 | register char *from; |
974 | register char *to; |
79072805 |
975 | register I32 len; |
378cc40b |
976 | { |
977 | char *retval = to; |
978 | |
7c0587c8 |
979 | if (from - to >= 0) { |
980 | while (len--) |
981 | *to++ = *from++; |
982 | } |
983 | else { |
984 | to += len; |
985 | from += len; |
986 | while (len--) |
faf8582f |
987 | *(--to) = *(--from); |
7c0587c8 |
988 | } |
378cc40b |
989 | return retval; |
990 | } |
ffed7fef |
991 | #endif |
378cc40b |
992 | |
7c0587c8 |
993 | #if !defined(HAS_BZERO) && !defined(HAS_MEMSET) |
378cc40b |
994 | char * |
7c0587c8 |
995 | my_bzero(loc,len) |
378cc40b |
996 | register char *loc; |
79072805 |
997 | register I32 len; |
378cc40b |
998 | { |
999 | char *retval = loc; |
1000 | |
1001 | while (len--) |
1002 | *loc++ = 0; |
1003 | return retval; |
1004 | } |
1005 | #endif |
7c0587c8 |
1006 | |
1007 | #ifndef HAS_MEMCMP |
79072805 |
1008 | I32 |
7c0587c8 |
1009 | my_memcmp(s1,s2,len) |
1010 | register unsigned char *s1; |
1011 | register unsigned char *s2; |
79072805 |
1012 | register I32 len; |
7c0587c8 |
1013 | { |
79072805 |
1014 | register I32 tmp; |
7c0587c8 |
1015 | |
1016 | while (len--) { |
1017 | if (tmp = *s1++ - *s2++) |
1018 | return tmp; |
1019 | } |
1020 | return 0; |
1021 | } |
1022 | #endif /* HAS_MEMCMP */ |
a687059c |
1023 | |
35c8bce7 |
1024 | #ifdef I_VARARGS |
fe14fcc3 |
1025 | #ifndef HAS_VPRINTF |
a687059c |
1026 | |
85e6fe83 |
1027 | #ifdef USE_CHAR_VSPRINTF |
a687059c |
1028 | char * |
1029 | #else |
1030 | int |
1031 | #endif |
1032 | vsprintf(dest, pat, args) |
1033 | char *dest, *pat, *args; |
1034 | { |
1035 | FILE fakebuf; |
1036 | |
1037 | fakebuf._ptr = dest; |
1038 | fakebuf._cnt = 32767; |
35c8bce7 |
1039 | #ifndef _IOSTRG |
1040 | #define _IOSTRG 0 |
1041 | #endif |
a687059c |
1042 | fakebuf._flag = _IOWRT|_IOSTRG; |
1043 | _doprnt(pat, args, &fakebuf); /* what a kludge */ |
1044 | (void)putc('\0', &fakebuf); |
85e6fe83 |
1045 | #ifdef USE_CHAR_VSPRINTF |
a687059c |
1046 | return(dest); |
1047 | #else |
1048 | return 0; /* perl doesn't use return value */ |
1049 | #endif |
1050 | } |
1051 | |
a687059c |
1052 | int |
1053 | vfprintf(fd, pat, args) |
1054 | FILE *fd; |
1055 | char *pat, *args; |
1056 | { |
1057 | _doprnt(pat, args, fd); |
1058 | return 0; /* wrong, but perl doesn't use the return value */ |
1059 | } |
fe14fcc3 |
1060 | #endif /* HAS_VPRINTF */ |
35c8bce7 |
1061 | #endif /* I_VARARGS */ |
a687059c |
1062 | |
988174c1 |
1063 | /* |
1064 | * I think my_swap(), htonl() and ntohl() have never been used. |
1065 | * perl.h contains last-chance references to my_swap(), my_htonl() |
1066 | * and my_ntohl(). I presume these are the intended functions; |
1067 | * but htonl() and ntohl() have the wrong names. There are no |
1068 | * functions my_htonl() and my_ntohl() defined anywhere. |
1069 | * -DWS |
1070 | */ |
a687059c |
1071 | #ifdef MYSWAP |
ffed7fef |
1072 | #if BYTEORDER != 0x4321 |
a687059c |
1073 | short |
1074 | my_swap(s) |
1075 | short s; |
1076 | { |
1077 | #if (BYTEORDER & 1) == 0 |
1078 | short result; |
1079 | |
1080 | result = ((s & 255) << 8) + ((s >> 8) & 255); |
1081 | return result; |
1082 | #else |
1083 | return s; |
1084 | #endif |
1085 | } |
1086 | |
1087 | long |
1088 | htonl(l) |
1089 | register long l; |
1090 | { |
1091 | union { |
1092 | long result; |
ffed7fef |
1093 | char c[sizeof(long)]; |
a687059c |
1094 | } u; |
1095 | |
ffed7fef |
1096 | #if BYTEORDER == 0x1234 |
a687059c |
1097 | u.c[0] = (l >> 24) & 255; |
1098 | u.c[1] = (l >> 16) & 255; |
1099 | u.c[2] = (l >> 8) & 255; |
1100 | u.c[3] = l & 255; |
1101 | return u.result; |
1102 | #else |
ffed7fef |
1103 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
463ee0b2 |
1104 | croak("Unknown BYTEORDER\n"); |
a687059c |
1105 | #else |
79072805 |
1106 | register I32 o; |
1107 | register I32 s; |
a687059c |
1108 | |
ffed7fef |
1109 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1110 | u.c[o & 0xf] = (l >> s) & 255; |
a687059c |
1111 | } |
1112 | return u.result; |
1113 | #endif |
1114 | #endif |
1115 | } |
1116 | |
1117 | long |
1118 | ntohl(l) |
1119 | register long l; |
1120 | { |
1121 | union { |
1122 | long l; |
ffed7fef |
1123 | char c[sizeof(long)]; |
a687059c |
1124 | } u; |
1125 | |
ffed7fef |
1126 | #if BYTEORDER == 0x1234 |
a687059c |
1127 | u.c[0] = (l >> 24) & 255; |
1128 | u.c[1] = (l >> 16) & 255; |
1129 | u.c[2] = (l >> 8) & 255; |
1130 | u.c[3] = l & 255; |
1131 | return u.l; |
1132 | #else |
ffed7fef |
1133 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
463ee0b2 |
1134 | croak("Unknown BYTEORDER\n"); |
a687059c |
1135 | #else |
79072805 |
1136 | register I32 o; |
1137 | register I32 s; |
a687059c |
1138 | |
1139 | u.l = l; |
1140 | l = 0; |
ffed7fef |
1141 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1142 | l |= (u.c[o & 0xf] & 255) << s; |
a687059c |
1143 | } |
1144 | return l; |
1145 | #endif |
1146 | #endif |
1147 | } |
1148 | |
ffed7fef |
1149 | #endif /* BYTEORDER != 0x4321 */ |
988174c1 |
1150 | #endif /* MYSWAP */ |
1151 | |
1152 | /* |
1153 | * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'. |
1154 | * If these functions are defined, |
1155 | * the BYTEORDER is neither 0x1234 nor 0x4321. |
1156 | * However, this is not assumed. |
1157 | * -DWS |
1158 | */ |
1159 | |
1160 | #define HTOV(name,type) \ |
1161 | type \ |
1162 | name (n) \ |
1163 | register type n; \ |
1164 | { \ |
1165 | union { \ |
1166 | type value; \ |
1167 | char c[sizeof(type)]; \ |
1168 | } u; \ |
79072805 |
1169 | register I32 i; \ |
1170 | register I32 s; \ |
988174c1 |
1171 | for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \ |
1172 | u.c[i] = (n >> s) & 0xFF; \ |
1173 | } \ |
1174 | return u.value; \ |
1175 | } |
1176 | |
1177 | #define VTOH(name,type) \ |
1178 | type \ |
1179 | name (n) \ |
1180 | register type n; \ |
1181 | { \ |
1182 | union { \ |
1183 | type value; \ |
1184 | char c[sizeof(type)]; \ |
1185 | } u; \ |
79072805 |
1186 | register I32 i; \ |
1187 | register I32 s; \ |
988174c1 |
1188 | u.value = n; \ |
1189 | n = 0; \ |
1190 | for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \ |
1191 | n += (u.c[i] & 0xFF) << s; \ |
1192 | } \ |
1193 | return n; \ |
1194 | } |
1195 | |
1196 | #if defined(HAS_HTOVS) && !defined(htovs) |
1197 | HTOV(htovs,short) |
1198 | #endif |
1199 | #if defined(HAS_HTOVL) && !defined(htovl) |
1200 | HTOV(htovl,long) |
1201 | #endif |
1202 | #if defined(HAS_VTOHS) && !defined(vtohs) |
1203 | VTOH(vtohs,short) |
1204 | #endif |
1205 | #if defined(HAS_VTOHL) && !defined(vtohl) |
1206 | VTOH(vtohl,long) |
1207 | #endif |
a687059c |
1208 | |
a0d0e21e |
1209 | #if !defined(DOSISH) && !defined(VMS) /* VMS' my_popen() is in VMS.c */ |
a687059c |
1210 | FILE * |
79072805 |
1211 | my_popen(cmd,mode) |
a687059c |
1212 | char *cmd; |
1213 | char *mode; |
1214 | { |
1215 | int p[2]; |
79072805 |
1216 | register I32 this, that; |
1217 | register I32 pid; |
1218 | SV *sv; |
1219 | I32 doexec = strNE(cmd,"-"); |
a687059c |
1220 | |
1221 | if (pipe(p) < 0) |
1222 | return Nullfp; |
1223 | this = (*mode == 'w'); |
1224 | that = !this; |
463ee0b2 |
1225 | if (tainting) { |
1226 | if (doexec) { |
1227 | taint_env(); |
1228 | taint_proper("Insecure %s%s", "EXEC"); |
1229 | } |
d48672a2 |
1230 | } |
a687059c |
1231 | while ((pid = (doexec?vfork():fork())) < 0) { |
1232 | if (errno != EAGAIN) { |
1233 | close(p[this]); |
1234 | if (!doexec) |
463ee0b2 |
1235 | croak("Can't fork"); |
a687059c |
1236 | return Nullfp; |
1237 | } |
1238 | sleep(5); |
1239 | } |
1240 | if (pid == 0) { |
79072805 |
1241 | GV* tmpgv; |
1242 | |
a687059c |
1243 | #define THIS that |
1244 | #define THAT this |
1245 | close(p[THAT]); |
1246 | if (p[THIS] != (*mode == 'r')) { |
1247 | dup2(p[THIS], *mode == 'r'); |
1248 | close(p[THIS]); |
1249 | } |
1250 | if (doexec) { |
a0d0e21e |
1251 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) |
ae986130 |
1252 | int fd; |
1253 | |
1254 | #ifndef NOFILE |
1255 | #define NOFILE 20 |
1256 | #endif |
d48672a2 |
1257 | for (fd = maxsysfd + 1; fd < NOFILE; fd++) |
ae986130 |
1258 | close(fd); |
1259 | #endif |
a687059c |
1260 | do_exec(cmd); /* may or may not use the shell */ |
1261 | _exit(1); |
1262 | } |
de3bb511 |
1263 | /*SUPPRESS 560*/ |
85e6fe83 |
1264 | if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV)) |
79072805 |
1265 | sv_setiv(GvSV(tmpgv),(I32)getpid()); |
9f68db38 |
1266 | forkprocess = 0; |
463ee0b2 |
1267 | hv_clear(pidstatus); /* we have no children */ |
a687059c |
1268 | return Nullfp; |
1269 | #undef THIS |
1270 | #undef THAT |
1271 | } |
62b28dd9 |
1272 | do_execfree(); /* free any memory malloced by child on vfork */ |
a687059c |
1273 | close(p[that]); |
62b28dd9 |
1274 | if (p[that] < p[this]) { |
1275 | dup2(p[this], p[that]); |
1276 | close(p[this]); |
1277 | p[this] = p[that]; |
1278 | } |
79072805 |
1279 | sv = *av_fetch(fdpid,p[this],TRUE); |
a0d0e21e |
1280 | (void)SvUPGRADE(sv,SVt_IV); |
463ee0b2 |
1281 | SvIVX(sv) = pid; |
a687059c |
1282 | forkprocess = pid; |
1283 | return fdopen(p[this], mode); |
1284 | } |
7c0587c8 |
1285 | #else |
1286 | #ifdef atarist |
1287 | FILE *popen(); |
1288 | FILE * |
79072805 |
1289 | my_popen(cmd,mode) |
7c0587c8 |
1290 | char *cmd; |
1291 | char *mode; |
1292 | { |
1293 | return popen(cmd, mode); |
1294 | } |
1295 | #endif |
1296 | |
1297 | #endif /* !DOSISH */ |
a687059c |
1298 | |
ae986130 |
1299 | #ifdef NOTDEF |
79072805 |
1300 | dump_fds(s) |
ae986130 |
1301 | char *s; |
1302 | { |
1303 | int fd; |
1304 | struct stat tmpstatbuf; |
1305 | |
1306 | fprintf(stderr,"%s", s); |
1307 | for (fd = 0; fd < 32; fd++) { |
a0d0e21e |
1308 | if (Fstat(fd,&tmpstatbuf) >= 0) |
ae986130 |
1309 | fprintf(stderr," %d",fd); |
1310 | } |
1311 | fprintf(stderr,"\n"); |
1312 | } |
1313 | #endif |
1314 | |
fe14fcc3 |
1315 | #ifndef HAS_DUP2 |
a687059c |
1316 | dup2(oldfd,newfd) |
1317 | int oldfd; |
1318 | int newfd; |
1319 | { |
a0d0e21e |
1320 | #if defined(HAS_FCNTL) && defined(F_DUPFD) |
62b28dd9 |
1321 | close(newfd); |
a0d0e21e |
1322 | fcntl(oldfd, F_DUPFD, newfd); |
62b28dd9 |
1323 | #else |
d48672a2 |
1324 | int fdtmp[256]; |
79072805 |
1325 | I32 fdx = 0; |
ae986130 |
1326 | int fd; |
1327 | |
fe14fcc3 |
1328 | if (oldfd == newfd) |
1329 | return 0; |
a687059c |
1330 | close(newfd); |
ae986130 |
1331 | while ((fd = dup(oldfd)) != newfd) /* good enough for low fd's */ |
1332 | fdtmp[fdx++] = fd; |
1333 | while (fdx > 0) |
1334 | close(fdtmp[--fdx]); |
62b28dd9 |
1335 | #endif |
a687059c |
1336 | } |
1337 | #endif |
1338 | |
7c0587c8 |
1339 | #ifndef DOSISH |
a0d0e21e |
1340 | #ifndef VMS /* VMS' my_pclose() is in VMS.c */ |
79072805 |
1341 | I32 |
1342 | my_pclose(ptr) |
a687059c |
1343 | FILE *ptr; |
1344 | { |
a687059c |
1345 | #ifdef VOIDSIG |
1346 | void (*hstat)(), (*istat)(), (*qstat)(); |
1347 | #else |
1348 | int (*hstat)(), (*istat)(), (*qstat)(); |
1349 | #endif |
1350 | int status; |
a0d0e21e |
1351 | SV **svp; |
20188a90 |
1352 | int pid; |
a687059c |
1353 | |
a0d0e21e |
1354 | svp = av_fetch(fdpid,fileno(ptr),TRUE); |
1355 | pid = SvIVX(*svp); |
1356 | SvREFCNT_dec(*svp); |
1357 | *svp = &sv_undef; |
a687059c |
1358 | fclose(ptr); |
7c0587c8 |
1359 | #ifdef UTS |
1360 | if(kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */ |
1361 | #endif |
a687059c |
1362 | hstat = signal(SIGHUP, SIG_IGN); |
1363 | istat = signal(SIGINT, SIG_IGN); |
1364 | qstat = signal(SIGQUIT, SIG_IGN); |
20188a90 |
1365 | pid = wait4pid(pid, &status, 0); |
1366 | signal(SIGHUP, hstat); |
1367 | signal(SIGINT, istat); |
1368 | signal(SIGQUIT, qstat); |
1369 | return(pid < 0 ? pid : status); |
1370 | } |
a0d0e21e |
1371 | #endif /* !VMS */ |
79072805 |
1372 | I32 |
20188a90 |
1373 | wait4pid(pid,statusp,flags) |
1374 | int pid; |
1375 | int *statusp; |
1376 | int flags; |
1377 | { |
79072805 |
1378 | SV *sv; |
1379 | SV** svp; |
20188a90 |
1380 | char spid[16]; |
1381 | |
1382 | if (!pid) |
1383 | return -1; |
20188a90 |
1384 | if (pid > 0) { |
1385 | sprintf(spid, "%d", pid); |
79072805 |
1386 | svp = hv_fetch(pidstatus,spid,strlen(spid),FALSE); |
1387 | if (svp && *svp != &sv_undef) { |
463ee0b2 |
1388 | *statusp = SvIVX(*svp); |
79072805 |
1389 | hv_delete(pidstatus,spid,strlen(spid)); |
20188a90 |
1390 | return pid; |
1391 | } |
1392 | } |
1393 | else { |
79072805 |
1394 | HE *entry; |
20188a90 |
1395 | |
79072805 |
1396 | hv_iterinit(pidstatus); |
1397 | if (entry = hv_iternext(pidstatus)) { |
a0d0e21e |
1398 | pid = atoi(hv_iterkey(entry,(I32*)statusp)); |
79072805 |
1399 | sv = hv_iterval(pidstatus,entry); |
463ee0b2 |
1400 | *statusp = SvIVX(sv); |
20188a90 |
1401 | sprintf(spid, "%d", pid); |
79072805 |
1402 | hv_delete(pidstatus,spid,strlen(spid)); |
20188a90 |
1403 | return pid; |
1404 | } |
1405 | } |
79072805 |
1406 | #ifdef HAS_WAITPID |
1407 | return waitpid(pid,statusp,flags); |
1408 | #else |
a0d0e21e |
1409 | #ifdef HAS_WAIT4 |
1410 | return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *)); |
1411 | #else |
1412 | { |
1413 | I32 result; |
1414 | if (flags) |
1415 | croak("Can't do waitpid with flags"); |
1416 | else { |
1417 | while ((result = wait(statusp)) != pid && pid > 0 && result >= 0) |
1418 | pidgone(result,*statusp); |
1419 | if (result < 0) |
1420 | *statusp = -1; |
1421 | } |
1422 | return result; |
a687059c |
1423 | } |
1424 | #endif |
20188a90 |
1425 | #endif |
a687059c |
1426 | } |
7c0587c8 |
1427 | #endif /* !DOSISH */ |
a687059c |
1428 | |
7c0587c8 |
1429 | void |
de3bb511 |
1430 | /*SUPPRESS 590*/ |
a687059c |
1431 | pidgone(pid,status) |
1432 | int pid; |
1433 | int status; |
1434 | { |
79072805 |
1435 | register SV *sv; |
20188a90 |
1436 | char spid[16]; |
a687059c |
1437 | |
20188a90 |
1438 | sprintf(spid, "%d", pid); |
79072805 |
1439 | sv = *hv_fetch(pidstatus,spid,strlen(spid),TRUE); |
a0d0e21e |
1440 | (void)SvUPGRADE(sv,SVt_IV); |
463ee0b2 |
1441 | SvIVX(sv) = status; |
20188a90 |
1442 | return; |
a687059c |
1443 | } |
1444 | |
7c0587c8 |
1445 | #ifdef atarist |
1446 | int pclose(); |
79072805 |
1447 | I32 |
1448 | my_pclose(ptr) |
7c0587c8 |
1449 | FILE *ptr; |
a687059c |
1450 | { |
7c0587c8 |
1451 | return pclose(ptr); |
a687059c |
1452 | } |
7c0587c8 |
1453 | #endif |
9f68db38 |
1454 | |
1455 | void |
1456 | repeatcpy(to,from,len,count) |
1457 | register char *to; |
1458 | register char *from; |
79072805 |
1459 | I32 len; |
1460 | register I32 count; |
9f68db38 |
1461 | { |
79072805 |
1462 | register I32 todo; |
9f68db38 |
1463 | register char *frombase = from; |
1464 | |
1465 | if (len == 1) { |
1466 | todo = *from; |
1467 | while (count-- > 0) |
1468 | *to++ = todo; |
1469 | return; |
1470 | } |
1471 | while (count-- > 0) { |
1472 | for (todo = len; todo > 0; todo--) { |
1473 | *to++ = *from++; |
1474 | } |
1475 | from = frombase; |
1476 | } |
1477 | } |
0f85fab0 |
1478 | |
1479 | #ifndef CASTNEGFLOAT |
463ee0b2 |
1480 | U32 |
79072805 |
1481 | cast_ulong(f) |
0f85fab0 |
1482 | double f; |
1483 | { |
1484 | long along; |
1485 | |
27e2fb84 |
1486 | #if CASTFLAGS & 2 |
34de22dd |
1487 | # define BIGDOUBLE 2147483648.0 |
1488 | if (f >= BIGDOUBLE) |
1489 | return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000; |
1490 | #endif |
0f85fab0 |
1491 | if (f >= 0.0) |
1492 | return (unsigned long)f; |
1493 | along = (long)f; |
1494 | return (unsigned long)along; |
1495 | } |
ed6116ce |
1496 | # undef BIGDOUBLE |
1497 | #endif |
1498 | |
1499 | #ifndef CASTI32 |
1500 | I32 |
1501 | cast_i32(f) |
1502 | double f; |
1503 | { |
1504 | # define BIGDOUBLE 2147483648.0 /* Assume 32 bit int's ! */ |
1505 | # define BIGNEGDOUBLE (-2147483648.0) |
1506 | if (f >= BIGDOUBLE) |
1507 | return (I32)fmod(f, BIGDOUBLE); |
1508 | if (f <= BIGNEGDOUBLE) |
1509 | return (I32)fmod(f, BIGNEGDOUBLE); |
1510 | return (I32) f; |
1511 | } |
1512 | # undef BIGDOUBLE |
1513 | # undef BIGNEGDOUBLE |
a0d0e21e |
1514 | |
1515 | IV |
1516 | cast_iv(f) |
1517 | double f; |
1518 | { |
1519 | /* XXX This should be fixed. It assumes 32 bit IV's. */ |
1520 | # define BIGDOUBLE 2147483648.0 /* Assume 32 bit IV's ! */ |
1521 | # define BIGNEGDOUBLE (-2147483648.0) |
1522 | if (f >= BIGDOUBLE) |
1523 | return (IV)fmod(f, BIGDOUBLE); |
1524 | if (f <= BIGNEGDOUBLE) |
1525 | return (IV)fmod(f, BIGNEGDOUBLE); |
1526 | return (IV) f; |
1527 | } |
1528 | # undef BIGDOUBLE |
1529 | # undef BIGNEGDOUBLE |
0f85fab0 |
1530 | #endif |
62b28dd9 |
1531 | |
fe14fcc3 |
1532 | #ifndef HAS_RENAME |
79072805 |
1533 | I32 |
62b28dd9 |
1534 | same_dirent(a,b) |
1535 | char *a; |
1536 | char *b; |
1537 | { |
93a17b20 |
1538 | char *fa = strrchr(a,'/'); |
1539 | char *fb = strrchr(b,'/'); |
62b28dd9 |
1540 | struct stat tmpstatbuf1; |
1541 | struct stat tmpstatbuf2; |
1542 | #ifndef MAXPATHLEN |
1543 | #define MAXPATHLEN 1024 |
1544 | #endif |
1545 | char tmpbuf[MAXPATHLEN+1]; |
1546 | |
1547 | if (fa) |
1548 | fa++; |
1549 | else |
1550 | fa = a; |
1551 | if (fb) |
1552 | fb++; |
1553 | else |
1554 | fb = b; |
1555 | if (strNE(a,b)) |
1556 | return FALSE; |
1557 | if (fa == a) |
6eb13c3b |
1558 | strcpy(tmpbuf,"."); |
62b28dd9 |
1559 | else |
1560 | strncpy(tmpbuf, a, fa - a); |
a0d0e21e |
1561 | if (Stat(tmpbuf, &tmpstatbuf1) < 0) |
62b28dd9 |
1562 | return FALSE; |
1563 | if (fb == b) |
6eb13c3b |
1564 | strcpy(tmpbuf,"."); |
62b28dd9 |
1565 | else |
1566 | strncpy(tmpbuf, b, fb - b); |
a0d0e21e |
1567 | if (Stat(tmpbuf, &tmpstatbuf2) < 0) |
62b28dd9 |
1568 | return FALSE; |
1569 | return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev && |
1570 | tmpstatbuf1.st_ino == tmpstatbuf2.st_ino; |
1571 | } |
fe14fcc3 |
1572 | #endif /* !HAS_RENAME */ |
1573 | |
1574 | unsigned long |
79072805 |
1575 | scan_oct(start, len, retlen) |
fe14fcc3 |
1576 | char *start; |
79072805 |
1577 | I32 len; |
1578 | I32 *retlen; |
fe14fcc3 |
1579 | { |
1580 | register char *s = start; |
1581 | register unsigned long retval = 0; |
1582 | |
1583 | while (len-- && *s >= '0' && *s <= '7') { |
1584 | retval <<= 3; |
1585 | retval |= *s++ - '0'; |
1586 | } |
1587 | *retlen = s - start; |
1588 | return retval; |
1589 | } |
1590 | |
1591 | unsigned long |
79072805 |
1592 | scan_hex(start, len, retlen) |
fe14fcc3 |
1593 | char *start; |
79072805 |
1594 | I32 len; |
1595 | I32 *retlen; |
fe14fcc3 |
1596 | { |
1597 | register char *s = start; |
1598 | register unsigned long retval = 0; |
1599 | char *tmp; |
1600 | |
93a17b20 |
1601 | while (len-- && *s && (tmp = strchr(hexdigit, *s))) { |
fe14fcc3 |
1602 | retval <<= 4; |
1603 | retval |= (tmp - hexdigit) & 15; |
1604 | s++; |
1605 | } |
1606 | *retlen = s - start; |
1607 | return retval; |
1608 | } |