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79072805 | 1 | /* $RCSfile: util.c,v $$Revision: 4.1 $$Date: 92/08/07 18:29:00 $ |
a687059c | 2 | * |
d48672a2 | 3 | * Copyright (c) 1991, Larry Wall |
a687059c | 4 | * |
d48672a2 LW |
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 LW |
7 | * |
8 | * $Log: util.c,v $ | |
79072805 LW |
9 | * Revision 4.1 92/08/07 18:29:00 lwall |
10 | * | |
faf8582f LW |
11 | * Revision 4.0.1.6 92/06/11 21:18:47 lwall |
12 | * patch34: boneheaded typo in my_bcopy() | |
13 | * | |
7c0587c8 LW |
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 LW |
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 LW |
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 | |
27 | * patch11: index("little", "longer string") could visit faraway places | |
28 | * patch11: warn '-' x 10000 dumped core | |
29 | * patch11: forked exec on non-existent program now issues a warning | |
30 | * | |
d48672a2 LW |
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 | |
34 | * patch4: index() could blow up searching for null string | |
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 LW |
38 | * Revision 4.0.1.1 91/04/12 09:19:25 lwall |
39 | * patch1: random cleanup in cpp namespace | |
40 | * | |
fe14fcc3 LW |
41 | * Revision 4.0 91/03/20 01:56:39 lwall |
42 | * 4.0 baseline. | |
8d063cd8 LW |
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 LW |
53 | |
54 | #ifdef I_VFORK | |
55 | # include <vfork.h> | |
56 | #endif | |
57 | ||
58 | #ifdef I_VARARGS | |
59 | # include <varargs.h> | |
60 | #endif | |
8d063cd8 | 61 | |
fe14fcc3 LW |
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 LW |
71 | #ifndef safemalloc |
72 | ||
8d063cd8 LW |
73 | /* paranoid version of malloc */ |
74 | ||
a687059c LW |
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 LW |
80 | char * |
81 | safemalloc(size) | |
62b28dd9 LW |
82 | #ifdef MSDOS |
83 | unsigned long size; | |
84 | #else | |
8d063cd8 | 85 | MEM_SIZE size; |
62b28dd9 | 86 | #endif /* MSDOS */ |
8d063cd8 LW |
87 | { |
88 | char *ptr; | |
d48672a2 | 89 | #ifndef STANDARD_C |
8d063cd8 | 90 | char *malloc(); |
d48672a2 | 91 | #endif /* ! STANDARD_C */ |
8d063cd8 | 92 | |
62b28dd9 LW |
93 | #ifdef MSDOS |
94 | if (size > 0xffff) { | |
95 | fprintf(stderr, "Allocation too large: %lx\n", size) FLUSH; | |
79072805 | 96 | my_exit(1); |
62b28dd9 LW |
97 | } |
98 | #endif /* MSDOS */ | |
34de22dd LW |
99 | #ifdef DEBUGGING |
100 | if ((long)size < 0) | |
101 | fatal("panic: malloc"); | |
102 | #endif | |
8d063cd8 | 103 | ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
79072805 LW |
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 LW |
108 | #endif |
109 | if (ptr != Nullch) | |
110 | return ptr; | |
7c0587c8 LW |
111 | else if (nomemok) |
112 | return Nullch; | |
8d063cd8 | 113 | else { |
79072805 LW |
114 | fputs(no_mem,stderr) FLUSH; |
115 | my_exit(1); | |
8d063cd8 LW |
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 LW |
127 | #else |
128 | unsigned long size; | |
129 | #endif /* MSDOS */ | |
8d063cd8 LW |
130 | { |
131 | char *ptr; | |
d48672a2 | 132 | #ifndef STANDARD_C |
8d063cd8 | 133 | char *realloc(); |
d48672a2 | 134 | #endif /* ! STANDARD_C */ |
8d063cd8 | 135 | |
62b28dd9 LW |
136 | #ifdef MSDOS |
137 | if (size > 0xffff) { | |
138 | fprintf(stderr, "Reallocation too large: %lx\n", size) FLUSH; | |
79072805 | 139 | my_exit(1); |
62b28dd9 LW |
140 | } |
141 | #endif /* MSDOS */ | |
378cc40b LW |
142 | if (!where) |
143 | fatal("Null realloc"); | |
34de22dd LW |
144 | #ifdef DEBUGGING |
145 | if ((long)size < 0) | |
146 | fatal("panic: realloc"); | |
147 | #endif | |
8d063cd8 | 148 | ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */ |
79072805 LW |
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 LW |
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 LW |
162 | if (ptr != Nullch) |
163 | return ptr; | |
7c0587c8 LW |
164 | else if (nomemok) |
165 | return Nullch; | |
8d063cd8 | 166 | else { |
79072805 LW |
167 | fputs(no_mem,stderr) FLUSH; |
168 | my_exit(1); | |
8d063cd8 LW |
169 | } |
170 | /*NOTREACHED*/ | |
171 | } | |
172 | ||
173 | /* safe version of free */ | |
174 | ||
a687059c | 175 | void |
8d063cd8 LW |
176 | safefree(where) |
177 | char *where; | |
178 | { | |
79072805 LW |
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 LW |
186 | free(where); |
187 | } | |
8d063cd8 LW |
188 | } |
189 | ||
de3bb511 LW |
190 | #endif /* !safemalloc */ |
191 | ||
a687059c LW |
192 | #ifdef LEAKTEST |
193 | ||
194 | #define ALIGN sizeof(long) | |
8d063cd8 LW |
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 LW |
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 LW |
209 | |
210 | char * | |
a687059c LW |
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 LW |
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 LW |
239 | fprintf(stderr,"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]); |
240 | lastxcount[i] = xcount[i]; | |
8d063cd8 LW |
241 | } |
242 | } | |
8d063cd8 | 243 | } |
a687059c LW |
244 | |
245 | #endif /* LEAKTEST */ | |
8d063cd8 LW |
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 LW |
251 | register char *to; |
252 | register char *from; | |
a687059c | 253 | register char *fromend; |
79072805 LW |
254 | register I32 delim; |
255 | I32 *retlen; | |
8d063cd8 | 256 | { |
a687059c LW |
257 | char *origto = to; |
258 | ||
259 | for (; from < fromend; from++,to++) { | |
378cc40b LW |
260 | if (*from == '\\') { |
261 | if (from[1] == delim) | |
262 | from++; | |
263 | else if (from[1] == '\\') | |
264 | *to++ = *from++; | |
265 | } | |
8d063cd8 LW |
266 | else if (*from == delim) |
267 | break; | |
268 | *to = *from; | |
269 | } | |
270 | *to = '\0'; | |
a687059c | 271 | *retlen = to - origto; |
8d063cd8 LW |
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 LW |
277 | |
278 | char * | |
279 | instr(big, little) | |
378cc40b LW |
280 | register char *big; |
281 | register char *little; | |
282 | { | |
283 | register char *s, *x; | |
79072805 | 284 | register I32 first; |
378cc40b | 285 | |
a687059c LW |
286 | if (!little) |
287 | return big; | |
288 | first = *little++; | |
378cc40b LW |
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 LW |
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 LW |
321 | if (!first && little > littleend) |
322 | return big; | |
de3bb511 LW |
323 | if (bigend - big < littleend - little) |
324 | return Nullch; | |
a687059c LW |
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 LW |
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 LW |
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 LW |
375 | fbm_compile(sv, iflag) |
376 | SV *sv; | |
377 | I32 iflag; | |
378cc40b | 378 | { |
a687059c LW |
379 | register unsigned char *s; |
380 | register unsigned char *table; | |
79072805 LW |
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); | |
387 | table = (unsigned char*)(SvPV(sv) + len + 1); | |
a687059c LW |
388 | s = table - 2; |
389 | for (i = 0; i < 256; i++) { | |
378cc40b LW |
390 | table[i] = len; |
391 | } | |
392 | i = 0; | |
79072805 | 393 | while (s >= (unsigned char*)(SvPV(sv))) |
a687059c LW |
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 LW |
402 | j = fold[*s]; |
403 | table[j] = i; | |
404 | table[*s] = i; | |
405 | } | |
406 | #endif /* pdp11 */ | |
407 | else | |
408 | table[*s] = i; | |
409 | } | |
378cc40b LW |
410 | s--,i++; |
411 | } | |
79072805 LW |
412 | sv_upgrade(sv, SVt_PVBM); |
413 | sv_magic(sv, 0, 'B', 0, 0); /* deep magic */ | |
414 | SvVALID_on(sv); | |
378cc40b | 415 | |
79072805 | 416 | s = (unsigned char*)(SvPV(sv)); /* deeper magic */ |
a687059c | 417 | if (iflag) { |
79072805 LW |
418 | register U32 tmp, foldtmp; |
419 | SvCASEFOLD_on(sv); | |
a687059c LW |
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 LW |
436 | } |
437 | } | |
79072805 LW |
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 LW |
441 | } |
442 | ||
378cc40b | 443 | char * |
79072805 | 444 | fbm_instr(big, bigend, littlestr) |
a687059c LW |
445 | unsigned char *big; |
446 | register unsigned char *bigend; | |
79072805 | 447 | SV *littlestr; |
378cc40b | 448 | { |
a687059c | 449 | register unsigned char *s; |
79072805 LW |
450 | register I32 tmp; |
451 | register I32 littlelen; | |
a687059c LW |
452 | register unsigned char *little; |
453 | register unsigned char *table; | |
454 | register unsigned char *olds; | |
455 | register unsigned char *oldlittle; | |
378cc40b | 456 | |
79072805 LW |
457 | if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) { |
458 | if (!SvPOK(littlestr) || !SvPV(littlestr)) | |
d48672a2 | 459 | return (char*)big; |
9f68db38 | 460 | return ninstr((char*)big,(char*)bigend, |
79072805 | 461 | SvPV(littlestr), SvPV(littlestr) + SvCUR(littlestr)); |
d48672a2 | 462 | } |
378cc40b | 463 | |
79072805 LW |
464 | littlelen = SvCUR(littlestr); |
465 | if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */ | |
0f85fab0 LW |
466 | if (littlelen > bigend - big) |
467 | return Nullch; | |
79072805 LW |
468 | little = (unsigned char*)SvPV(littlestr); |
469 | if (SvCASEFOLD(littlestr)) { /* oops, fake it */ | |
a687059c LW |
470 | big = bigend - littlelen; /* just start near end */ |
471 | if (bigend[-1] == '\n' && little[littlelen-1] != '\n') | |
472 | big--; | |
378cc40b LW |
473 | } |
474 | else { | |
a687059c LW |
475 | s = bigend - littlelen; |
476 | if (*s == *little && bcmp(s,little,littlelen)==0) | |
477 | return (char*)s; /* how sweet it is */ | |
34de22dd LW |
478 | else if (bigend[-1] == '\n' && little[littlelen-1] != '\n' |
479 | && s > big) { | |
a687059c LW |
480 | s--; |
481 | if (*s == *little && bcmp(s,little,littlelen)==0) | |
482 | return (char*)s; | |
483 | } | |
484 | return Nullch; | |
485 | } | |
486 | } | |
79072805 | 487 | table = (unsigned char*)(SvPV(littlestr) + littlelen + 1); |
62b28dd9 LW |
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 LW |
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 LW |
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 LW |
521 | } |
522 | } | |
523 | } | |
524 | else { | |
20188a90 | 525 | if (s < bigend) { |
a687059c | 526 | top2: |
de3bb511 | 527 | /*SUPPRESS 560*/ |
a687059c | 528 | if (tmp = table[*s]) { |
62b28dd9 LW |
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 LW |
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 LW |
554 | } |
555 | } | |
556 | return Nullch; | |
557 | } | |
558 | ||
559 | char * | |
560 | screaminstr(bigstr, littlestr) | |
79072805 LW |
561 | SV *bigstr; |
562 | SV *littlestr; | |
378cc40b | 563 | { |
a687059c LW |
564 | register unsigned char *s, *x; |
565 | register unsigned char *big; | |
79072805 LW |
566 | register I32 pos; |
567 | register I32 previous; | |
568 | register I32 first; | |
a687059c LW |
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; |
79072805 LW |
575 | little = (unsigned char *)(SvPV(littlestr)); |
576 | littleend = little + SvCUR(littlestr); | |
378cc40b | 577 | first = *little++; |
79072805 LW |
578 | previous = BmPREVIOUS(littlestr); |
579 | big = (unsigned char *)(SvPV(bigstr)); | |
580 | bigend = big + SvCUR(bigstr); | |
378cc40b LW |
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 LW |
588 | if (big[pos-previous] != first && big[pos-previous] != fold[first]) |
589 | continue; | |
de3bb511 LW |
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 LW |
602 | ); |
603 | } | |
604 | else { | |
605 | do { | |
988174c1 LW |
606 | if (big[pos-previous] != first) |
607 | continue; | |
de3bb511 LW |
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 LW |
619 | } |
620 | #else /* !POINTERRIGOR */ | |
621 | big -= previous; | |
79072805 | 622 | if (SvCASEFOLD(littlestr)) { /* case insignificant? */ |
de3bb511 | 623 | do { |
988174c1 LW |
624 | if (big[pos] != first && big[pos] != fold[first]) |
625 | continue; | |
a687059c LW |
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 LW |
638 | ); |
639 | } | |
640 | else { | |
641 | do { | |
988174c1 LW |
642 | if (big[pos] != first) |
643 | continue; | |
a687059c LW |
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 LW |
656 | ); |
657 | } | |
de3bb511 | 658 | #endif /* POINTERRIGOR */ |
8d063cd8 LW |
659 | return Nullch; |
660 | } | |
661 | ||
79072805 LW |
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 LW |
680 | /* copy a string to a safe spot */ |
681 | ||
682 | char * | |
79072805 LW |
683 | savestr(sv) |
684 | char *sv; | |
8d063cd8 | 685 | { |
a687059c | 686 | register char *newaddr; |
8d063cd8 | 687 | |
79072805 LW |
688 | New(902,newaddr,strlen(sv)+1,char); |
689 | (void)strcpy(newaddr,sv); | |
8d063cd8 LW |
690 | return newaddr; |
691 | } | |
692 | ||
a687059c LW |
693 | /* same thing but with a known length */ |
694 | ||
695 | char * | |
79072805 LW |
696 | nsavestr(sv, len) |
697 | char *sv; | |
698 | register I32 len; | |
a687059c LW |
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 LW |
704 | newaddr[len] = '\0'; /* is now */ |
705 | return newaddr; | |
706 | } | |
707 | ||
8d063cd8 LW |
708 | /* grow a static string to at least a certain length */ |
709 | ||
710 | void | |
79072805 | 711 | pv_grow(strptr,curlen,newlen) |
8d063cd8 | 712 | char **strptr; |
79072805 LW |
713 | I32 *curlen; |
714 | I32 newlen; | |
8d063cd8 LW |
715 | { |
716 | if (newlen > *curlen) { /* need more room? */ | |
717 | if (*curlen) | |
a687059c | 718 | Renew(*strptr,newlen,char); |
8d063cd8 | 719 | else |
a687059c | 720 | New(905,*strptr,newlen,char); |
8d063cd8 LW |
721 | *curlen = newlen; |
722 | } | |
723 | } | |
724 | ||
35c8bce7 | 725 | #ifndef I_VARARGS |
378cc40b | 726 | /*VARARGS1*/ |
7c0587c8 | 727 | char * |
378cc40b LW |
728 | mess(pat,a1,a2,a3,a4) |
729 | char *pat; | |
a687059c | 730 | long a1, a2, a3, a4; |
378cc40b LW |
731 | { |
732 | char *s; | |
79072805 LW |
733 | I32 usermess = strEQ(pat,"%s"); |
734 | SV *tmpstr; | |
378cc40b | 735 | |
a687059c | 736 | s = buf; |
de3bb511 | 737 | if (usermess) { |
79072805 LW |
738 | tmpstr = sv_mortalcopy(&sv_undef); |
739 | sv_setpv(tmpstr, (char*)a1); | |
740 | *s++ = SvPV(tmpstr)[SvCUR(tmpstr)-1]; | |
de3bb511 LW |
741 | } |
742 | else { | |
743 | (void)sprintf(s,pat,a1,a2,a3,a4); | |
744 | s += strlen(s); | |
745 | } | |
746 | ||
378cc40b | 747 | if (s[-1] != '\n') { |
79072805 | 748 | if (curcop->cop_line) { |
20188a90 | 749 | (void)sprintf(s," at %s line %ld", |
79072805 | 750 | SvPV(GvSV(curcop->cop_filegv)), (long)curcop->cop_line); |
378cc40b LW |
751 | s += strlen(s); |
752 | } | |
79072805 LW |
753 | if (last_in_gv && |
754 | GvIO(last_in_gv) && | |
755 | GvIO(last_in_gv)->lines ) { | |
756 | (void)sprintf(s,", <%s> %s %ld", | |
757 | last_in_gv == argvgv ? "" : GvENAME(last_in_gv), | |
758 | strEQ(rs,"\n") ? "line" : "chunk", | |
759 | (long)GvIO(last_in_gv)->lines); | |
378cc40b LW |
760 | s += strlen(s); |
761 | } | |
a687059c | 762 | (void)strcpy(s,".\n"); |
de3bb511 | 763 | if (usermess) |
79072805 | 764 | sv_catpv(tmpstr,buf+1); |
378cc40b | 765 | } |
de3bb511 | 766 | if (usermess) |
79072805 | 767 | return SvPV(tmpstr); |
de3bb511 LW |
768 | else |
769 | return buf; | |
378cc40b LW |
770 | } |
771 | ||
8d063cd8 | 772 | /*VARARGS1*/ |
7c0587c8 | 773 | void fatal(pat,a1,a2,a3,a4) |
8d063cd8 | 774 | char *pat; |
a687059c | 775 | long a1, a2, a3, a4; |
8d063cd8 | 776 | { |
9f68db38 | 777 | char *tmps; |
de3bb511 | 778 | char *message; |
8d063cd8 | 779 | |
de3bb511 | 780 | message = mess(pat,a1,a2,a3,a4); |
79072805 | 781 | XXX |
de3bb511 | 782 | fputs(message,stderr); |
a687059c | 783 | (void)fflush(stderr); |
8d063cd8 | 784 | if (e_fp) |
a687059c | 785 | (void)UNLINK(e_tmpname); |
378cc40b | 786 | statusvalue >>= 8; |
79072805 | 787 | my_exit((I32)((errno&255)?errno:((statusvalue&255)?statusvalue:255))); |
378cc40b LW |
788 | } |
789 | ||
790 | /*VARARGS1*/ | |
7c0587c8 | 791 | void warn(pat,a1,a2,a3,a4) |
378cc40b | 792 | char *pat; |
a687059c | 793 | long a1, a2, a3, a4; |
378cc40b | 794 | { |
de3bb511 LW |
795 | char *message; |
796 | ||
797 | message = mess(pat,a1,a2,a3,a4); | |
798 | fputs(message,stderr); | |
a687059c | 799 | #ifdef LEAKTEST |
79072805 | 800 | DEBUG_L(xstat()); |
a687059c LW |
801 | #endif |
802 | (void)fflush(stderr); | |
8d063cd8 | 803 | } |
a687059c LW |
804 | #else |
805 | /*VARARGS0*/ | |
de3bb511 | 806 | char * |
a687059c LW |
807 | mess(args) |
808 | va_list args; | |
809 | { | |
810 | char *pat; | |
811 | char *s; | |
79072805 LW |
812 | SV *tmpstr; |
813 | I32 usermess; | |
d48672a2 | 814 | #ifndef HAS_VPRINTF |
a687059c LW |
815 | #ifdef CHARVSPRINTF |
816 | char *vsprintf(); | |
817 | #else | |
79072805 | 818 | I32 vsprintf(); |
a687059c | 819 | #endif |
d48672a2 | 820 | #endif |
a687059c | 821 | |
a687059c | 822 | pat = va_arg(args, char *); |
de3bb511 LW |
823 | s = buf; |
824 | usermess = strEQ(pat, "%s"); | |
825 | if (usermess) { | |
79072805 LW |
826 | tmpstr = sv_mortalcopy(&sv_undef); |
827 | sv_setpv(tmpstr, va_arg(args, char *)); | |
828 | *s++ = SvPV(tmpstr)[SvCUR(tmpstr)-1]; | |
de3bb511 LW |
829 | } |
830 | else { | |
831 | (void) vsprintf(s,pat,args); | |
832 | s += strlen(s); | |
833 | } | |
a687059c | 834 | |
a687059c | 835 | if (s[-1] != '\n') { |
79072805 | 836 | if (curcop->cop_line) { |
20188a90 | 837 | (void)sprintf(s," at %s line %ld", |
79072805 | 838 | SvPV(GvSV(curcop->cop_filegv)), (long)curcop->cop_line); |
a687059c LW |
839 | s += strlen(s); |
840 | } | |
79072805 LW |
841 | if (last_in_gv && |
842 | GvIO(last_in_gv) && | |
843 | GvIO(last_in_gv)->lines ) { | |
844 | (void)sprintf(s,", <%s> %s %ld", | |
845 | last_in_gv == argvgv ? "" : GvNAME(last_in_gv), | |
846 | strEQ(rs,"\n") ? "line" : "chunk", | |
847 | (long)GvIO(last_in_gv)->lines); | |
a687059c LW |
848 | s += strlen(s); |
849 | } | |
850 | (void)strcpy(s,".\n"); | |
de3bb511 | 851 | if (usermess) |
79072805 | 852 | sv_catpv(tmpstr,buf+1); |
a687059c | 853 | } |
de3bb511 LW |
854 | |
855 | if (usermess) | |
79072805 | 856 | return SvPV(tmpstr); |
de3bb511 LW |
857 | else |
858 | return buf; | |
a687059c LW |
859 | } |
860 | ||
861 | /*VARARGS0*/ | |
79072805 LW |
862 | void |
863 | fatal(va_alist) | |
a687059c LW |
864 | va_dcl |
865 | { | |
866 | va_list args; | |
9f68db38 | 867 | char *tmps; |
de3bb511 | 868 | char *message; |
a687059c | 869 | |
a687059c | 870 | va_start(args); |
de3bb511 | 871 | message = mess(args); |
a687059c | 872 | va_end(args); |
79072805 LW |
873 | if (restartop = die_where(message)) |
874 | longjmp(top_env, 3); | |
de3bb511 | 875 | fputs(message,stderr); |
a687059c LW |
876 | (void)fflush(stderr); |
877 | if (e_fp) | |
878 | (void)UNLINK(e_tmpname); | |
879 | statusvalue >>= 8; | |
79072805 | 880 | my_exit((I32)((errno&255)?errno:((statusvalue&255)?statusvalue:255))); |
a687059c LW |
881 | } |
882 | ||
883 | /*VARARGS0*/ | |
7c0587c8 | 884 | void warn(va_alist) |
a687059c LW |
885 | va_dcl |
886 | { | |
887 | va_list args; | |
de3bb511 | 888 | char *message; |
a687059c | 889 | |
a687059c | 890 | va_start(args); |
de3bb511 | 891 | message = mess(args); |
a687059c LW |
892 | va_end(args); |
893 | ||
de3bb511 | 894 | fputs(message,stderr); |
a687059c | 895 | #ifdef LEAKTEST |
79072805 | 896 | DEBUG_L(xstat()); |
a687059c LW |
897 | #endif |
898 | (void)fflush(stderr); | |
899 | } | |
900 | #endif | |
8d063cd8 | 901 | |
8d063cd8 | 902 | void |
7c0587c8 | 903 | my_setenv(nam,val) |
8d063cd8 LW |
904 | char *nam, *val; |
905 | { | |
79072805 | 906 | register I32 i=setenv_getix(nam); /* where does it go? */ |
8d063cd8 | 907 | |
fe14fcc3 | 908 | if (environ == origenviron) { /* need we copy environment? */ |
79072805 LW |
909 | I32 j; |
910 | I32 max; | |
fe14fcc3 LW |
911 | char **tmpenv; |
912 | ||
de3bb511 | 913 | /*SUPPRESS 530*/ |
fe14fcc3 LW |
914 | for (max = i; environ[max]; max++) ; |
915 | New(901,tmpenv, max+2, char*); | |
916 | for (j=0; j<max; j++) /* copy environment */ | |
917 | tmpenv[j] = savestr(environ[j]); | |
918 | tmpenv[max] = Nullch; | |
919 | environ = tmpenv; /* tell exec where it is now */ | |
920 | } | |
a687059c LW |
921 | if (!val) { |
922 | while (environ[i]) { | |
923 | environ[i] = environ[i+1]; | |
924 | i++; | |
925 | } | |
926 | return; | |
927 | } | |
8d063cd8 | 928 | if (!environ[i]) { /* does not exist yet */ |
fe14fcc3 | 929 | Renew(environ, i+2, char*); /* just expand it a bit */ |
8d063cd8 LW |
930 | environ[i+1] = Nullch; /* make sure it's null terminated */ |
931 | } | |
fe14fcc3 LW |
932 | else |
933 | Safefree(environ[i]); | |
a687059c | 934 | New(904, environ[i], strlen(nam) + strlen(val) + 2, char); |
62b28dd9 | 935 | #ifndef MSDOS |
a687059c | 936 | (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */ |
62b28dd9 LW |
937 | #else |
938 | /* MS-DOS requires environment variable names to be in uppercase */ | |
fe14fcc3 LW |
939 | /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but |
940 | * some utilities and applications may break because they only look | |
941 | * for upper case strings. (Fixed strupr() bug here.)] | |
942 | */ | |
943 | strcpy(environ[i],nam); strupr(environ[i]); | |
62b28dd9 LW |
944 | (void)sprintf(environ[i] + strlen(nam),"=%s",val); |
945 | #endif /* MSDOS */ | |
8d063cd8 LW |
946 | } |
947 | ||
79072805 LW |
948 | I32 |
949 | setenv_getix(nam) | |
8d063cd8 LW |
950 | char *nam; |
951 | { | |
79072805 | 952 | register I32 i, len = strlen(nam); |
8d063cd8 LW |
953 | |
954 | for (i = 0; environ[i]; i++) { | |
955 | if (strnEQ(environ[i],nam,len) && environ[i][len] == '=') | |
956 | break; /* strnEQ must come first to avoid */ | |
957 | } /* potential SEGV's */ | |
958 | return i; | |
959 | } | |
378cc40b LW |
960 | |
961 | #ifdef EUNICE | |
79072805 | 962 | I32 |
378cc40b LW |
963 | unlnk(f) /* unlink all versions of a file */ |
964 | char *f; | |
965 | { | |
79072805 | 966 | I32 i; |
378cc40b LW |
967 | |
968 | for (i = 0; unlink(f) >= 0; i++) ; | |
969 | return i ? 0 : -1; | |
970 | } | |
971 | #endif | |
972 | ||
7c0587c8 | 973 | #if !defined(HAS_BCOPY) || !defined(SAFE_BCOPY) |
378cc40b | 974 | char * |
7c0587c8 | 975 | my_bcopy(from,to,len) |
378cc40b LW |
976 | register char *from; |
977 | register char *to; | |
79072805 | 978 | register I32 len; |
378cc40b LW |
979 | { |
980 | char *retval = to; | |
981 | ||
7c0587c8 LW |
982 | if (from - to >= 0) { |
983 | while (len--) | |
984 | *to++ = *from++; | |
985 | } | |
986 | else { | |
987 | to += len; | |
988 | from += len; | |
989 | while (len--) | |
faf8582f | 990 | *(--to) = *(--from); |
7c0587c8 | 991 | } |
378cc40b LW |
992 | return retval; |
993 | } | |
ffed7fef | 994 | #endif |
378cc40b | 995 | |
7c0587c8 | 996 | #if !defined(HAS_BZERO) && !defined(HAS_MEMSET) |
378cc40b | 997 | char * |
7c0587c8 | 998 | my_bzero(loc,len) |
378cc40b | 999 | register char *loc; |
79072805 | 1000 | register I32 len; |
378cc40b LW |
1001 | { |
1002 | char *retval = loc; | |
1003 | ||
1004 | while (len--) | |
1005 | *loc++ = 0; | |
1006 | return retval; | |
1007 | } | |
1008 | #endif | |
7c0587c8 LW |
1009 | |
1010 | #ifndef HAS_MEMCMP | |
79072805 | 1011 | I32 |
7c0587c8 LW |
1012 | my_memcmp(s1,s2,len) |
1013 | register unsigned char *s1; | |
1014 | register unsigned char *s2; | |
79072805 | 1015 | register I32 len; |
7c0587c8 | 1016 | { |
79072805 | 1017 | register I32 tmp; |
7c0587c8 LW |
1018 | |
1019 | while (len--) { | |
1020 | if (tmp = *s1++ - *s2++) | |
1021 | return tmp; | |
1022 | } | |
1023 | return 0; | |
1024 | } | |
1025 | #endif /* HAS_MEMCMP */ | |
a687059c | 1026 | |
35c8bce7 | 1027 | #ifdef I_VARARGS |
fe14fcc3 | 1028 | #ifndef HAS_VPRINTF |
a687059c LW |
1029 | |
1030 | #ifdef CHARVSPRINTF | |
1031 | char * | |
1032 | #else | |
1033 | int | |
1034 | #endif | |
1035 | vsprintf(dest, pat, args) | |
1036 | char *dest, *pat, *args; | |
1037 | { | |
1038 | FILE fakebuf; | |
1039 | ||
1040 | fakebuf._ptr = dest; | |
1041 | fakebuf._cnt = 32767; | |
35c8bce7 LW |
1042 | #ifndef _IOSTRG |
1043 | #define _IOSTRG 0 | |
1044 | #endif | |
a687059c LW |
1045 | fakebuf._flag = _IOWRT|_IOSTRG; |
1046 | _doprnt(pat, args, &fakebuf); /* what a kludge */ | |
1047 | (void)putc('\0', &fakebuf); | |
1048 | #ifdef CHARVSPRINTF | |
1049 | return(dest); | |
1050 | #else | |
1051 | return 0; /* perl doesn't use return value */ | |
1052 | #endif | |
1053 | } | |
1054 | ||
a687059c LW |
1055 | int |
1056 | vfprintf(fd, pat, args) | |
1057 | FILE *fd; | |
1058 | char *pat, *args; | |
1059 | { | |
1060 | _doprnt(pat, args, fd); | |
1061 | return 0; /* wrong, but perl doesn't use the return value */ | |
1062 | } | |
fe14fcc3 | 1063 | #endif /* HAS_VPRINTF */ |
35c8bce7 | 1064 | #endif /* I_VARARGS */ |
a687059c | 1065 | |
988174c1 LW |
1066 | /* |
1067 | * I think my_swap(), htonl() and ntohl() have never been used. | |
1068 | * perl.h contains last-chance references to my_swap(), my_htonl() | |
1069 | * and my_ntohl(). I presume these are the intended functions; | |
1070 | * but htonl() and ntohl() have the wrong names. There are no | |
1071 | * functions my_htonl() and my_ntohl() defined anywhere. | |
1072 | * -DWS | |
1073 | */ | |
a687059c | 1074 | #ifdef MYSWAP |
ffed7fef | 1075 | #if BYTEORDER != 0x4321 |
a687059c LW |
1076 | short |
1077 | my_swap(s) | |
1078 | short s; | |
1079 | { | |
1080 | #if (BYTEORDER & 1) == 0 | |
1081 | short result; | |
1082 | ||
1083 | result = ((s & 255) << 8) + ((s >> 8) & 255); | |
1084 | return result; | |
1085 | #else | |
1086 | return s; | |
1087 | #endif | |
1088 | } | |
1089 | ||
1090 | long | |
1091 | htonl(l) | |
1092 | register long l; | |
1093 | { | |
1094 | union { | |
1095 | long result; | |
ffed7fef | 1096 | char c[sizeof(long)]; |
a687059c LW |
1097 | } u; |
1098 | ||
ffed7fef | 1099 | #if BYTEORDER == 0x1234 |
a687059c LW |
1100 | u.c[0] = (l >> 24) & 255; |
1101 | u.c[1] = (l >> 16) & 255; | |
1102 | u.c[2] = (l >> 8) & 255; | |
1103 | u.c[3] = l & 255; | |
1104 | return u.result; | |
1105 | #else | |
ffed7fef | 1106 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
a687059c LW |
1107 | fatal("Unknown BYTEORDER\n"); |
1108 | #else | |
79072805 LW |
1109 | register I32 o; |
1110 | register I32 s; | |
a687059c | 1111 | |
ffed7fef LW |
1112 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1113 | u.c[o & 0xf] = (l >> s) & 255; | |
a687059c LW |
1114 | } |
1115 | return u.result; | |
1116 | #endif | |
1117 | #endif | |
1118 | } | |
1119 | ||
1120 | long | |
1121 | ntohl(l) | |
1122 | register long l; | |
1123 | { | |
1124 | union { | |
1125 | long l; | |
ffed7fef | 1126 | char c[sizeof(long)]; |
a687059c LW |
1127 | } u; |
1128 | ||
ffed7fef | 1129 | #if BYTEORDER == 0x1234 |
a687059c LW |
1130 | u.c[0] = (l >> 24) & 255; |
1131 | u.c[1] = (l >> 16) & 255; | |
1132 | u.c[2] = (l >> 8) & 255; | |
1133 | u.c[3] = l & 255; | |
1134 | return u.l; | |
1135 | #else | |
ffed7fef | 1136 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
a687059c LW |
1137 | fatal("Unknown BYTEORDER\n"); |
1138 | #else | |
79072805 LW |
1139 | register I32 o; |
1140 | register I32 s; | |
a687059c LW |
1141 | |
1142 | u.l = l; | |
1143 | l = 0; | |
ffed7fef LW |
1144 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1145 | l |= (u.c[o & 0xf] & 255) << s; | |
a687059c LW |
1146 | } |
1147 | return l; | |
1148 | #endif | |
1149 | #endif | |
1150 | } | |
1151 | ||
ffed7fef | 1152 | #endif /* BYTEORDER != 0x4321 */ |
988174c1 LW |
1153 | #endif /* MYSWAP */ |
1154 | ||
1155 | /* | |
1156 | * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'. | |
1157 | * If these functions are defined, | |
1158 | * the BYTEORDER is neither 0x1234 nor 0x4321. | |
1159 | * However, this is not assumed. | |
1160 | * -DWS | |
1161 | */ | |
1162 | ||
1163 | #define HTOV(name,type) \ | |
1164 | type \ | |
1165 | name (n) \ | |
1166 | register type n; \ | |
1167 | { \ | |
1168 | union { \ | |
1169 | type value; \ | |
1170 | char c[sizeof(type)]; \ | |
1171 | } u; \ | |
79072805 LW |
1172 | register I32 i; \ |
1173 | register I32 s; \ | |
988174c1 LW |
1174 | for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \ |
1175 | u.c[i] = (n >> s) & 0xFF; \ | |
1176 | } \ | |
1177 | return u.value; \ | |
1178 | } | |
1179 | ||
1180 | #define VTOH(name,type) \ | |
1181 | type \ | |
1182 | name (n) \ | |
1183 | register type n; \ | |
1184 | { \ | |
1185 | union { \ | |
1186 | type value; \ | |
1187 | char c[sizeof(type)]; \ | |
1188 | } u; \ | |
79072805 LW |
1189 | register I32 i; \ |
1190 | register I32 s; \ | |
988174c1 LW |
1191 | u.value = n; \ |
1192 | n = 0; \ | |
1193 | for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \ | |
1194 | n += (u.c[i] & 0xFF) << s; \ | |
1195 | } \ | |
1196 | return n; \ | |
1197 | } | |
1198 | ||
1199 | #if defined(HAS_HTOVS) && !defined(htovs) | |
1200 | HTOV(htovs,short) | |
1201 | #endif | |
1202 | #if defined(HAS_HTOVL) && !defined(htovl) | |
1203 | HTOV(htovl,long) | |
1204 | #endif | |
1205 | #if defined(HAS_VTOHS) && !defined(vtohs) | |
1206 | VTOH(vtohs,short) | |
1207 | #endif | |
1208 | #if defined(HAS_VTOHL) && !defined(vtohl) | |
1209 | VTOH(vtohl,long) | |
1210 | #endif | |
a687059c | 1211 | |
7c0587c8 | 1212 | #ifndef DOSISH |
a687059c | 1213 | FILE * |
79072805 | 1214 | my_popen(cmd,mode) |
a687059c LW |
1215 | char *cmd; |
1216 | char *mode; | |
1217 | { | |
1218 | int p[2]; | |
79072805 LW |
1219 | register I32 this, that; |
1220 | register I32 pid; | |
1221 | SV *sv; | |
1222 | I32 doexec = strNE(cmd,"-"); | |
a687059c LW |
1223 | |
1224 | if (pipe(p) < 0) | |
1225 | return Nullfp; | |
1226 | this = (*mode == 'w'); | |
1227 | that = !this; | |
d48672a2 LW |
1228 | #ifdef TAINT |
1229 | if (doexec) { | |
79072805 LW |
1230 | taint_env(); |
1231 | TAINT_PROPER("exec"); | |
d48672a2 LW |
1232 | } |
1233 | #endif | |
a687059c LW |
1234 | while ((pid = (doexec?vfork():fork())) < 0) { |
1235 | if (errno != EAGAIN) { | |
1236 | close(p[this]); | |
1237 | if (!doexec) | |
1238 | fatal("Can't fork"); | |
1239 | return Nullfp; | |
1240 | } | |
1241 | sleep(5); | |
1242 | } | |
1243 | if (pid == 0) { | |
79072805 LW |
1244 | GV* tmpgv; |
1245 | ||
a687059c LW |
1246 | #define THIS that |
1247 | #define THAT this | |
1248 | close(p[THAT]); | |
1249 | if (p[THIS] != (*mode == 'r')) { | |
1250 | dup2(p[THIS], *mode == 'r'); | |
1251 | close(p[THIS]); | |
1252 | } | |
1253 | if (doexec) { | |
79072805 | 1254 | #if !defined(HAS_FCNTL) || !defined(FFt_SETFD) |
ae986130 LW |
1255 | int fd; |
1256 | ||
1257 | #ifndef NOFILE | |
1258 | #define NOFILE 20 | |
1259 | #endif | |
d48672a2 | 1260 | for (fd = maxsysfd + 1; fd < NOFILE; fd++) |
ae986130 LW |
1261 | close(fd); |
1262 | #endif | |
a687059c | 1263 | do_exec(cmd); /* may or may not use the shell */ |
de3bb511 | 1264 | warn("Can't exec \"%s\": %s", cmd, strerror(errno)); |
a687059c LW |
1265 | _exit(1); |
1266 | } | |
de3bb511 | 1267 | /*SUPPRESS 560*/ |
79072805 LW |
1268 | if (tmpgv = gv_fetchpv("$",allgvs)) |
1269 | sv_setiv(GvSV(tmpgv),(I32)getpid()); | |
9f68db38 | 1270 | forkprocess = 0; |
79072805 | 1271 | hv_clear(pidstatus, FALSE); /* we have no children */ |
a687059c LW |
1272 | return Nullfp; |
1273 | #undef THIS | |
1274 | #undef THAT | |
1275 | } | |
62b28dd9 | 1276 | do_execfree(); /* free any memory malloced by child on vfork */ |
a687059c | 1277 | close(p[that]); |
62b28dd9 LW |
1278 | if (p[that] < p[this]) { |
1279 | dup2(p[this], p[that]); | |
1280 | close(p[this]); | |
1281 | p[this] = p[that]; | |
1282 | } | |
79072805 LW |
1283 | sv = *av_fetch(fdpid,p[this],TRUE); |
1284 | SvUPGRADE(sv,SVt_IV); | |
1285 | SvIV(sv) = pid; | |
a687059c LW |
1286 | forkprocess = pid; |
1287 | return fdopen(p[this], mode); | |
1288 | } | |
7c0587c8 LW |
1289 | #else |
1290 | #ifdef atarist | |
1291 | FILE *popen(); | |
1292 | FILE * | |
79072805 | 1293 | my_popen(cmd,mode) |
7c0587c8 LW |
1294 | char *cmd; |
1295 | char *mode; | |
1296 | { | |
1297 | return popen(cmd, mode); | |
1298 | } | |
1299 | #endif | |
1300 | ||
1301 | #endif /* !DOSISH */ | |
a687059c | 1302 | |
ae986130 | 1303 | #ifdef NOTDEF |
79072805 | 1304 | dump_fds(s) |
ae986130 LW |
1305 | char *s; |
1306 | { | |
1307 | int fd; | |
1308 | struct stat tmpstatbuf; | |
1309 | ||
1310 | fprintf(stderr,"%s", s); | |
1311 | for (fd = 0; fd < 32; fd++) { | |
1312 | if (fstat(fd,&tmpstatbuf) >= 0) | |
1313 | fprintf(stderr," %d",fd); | |
1314 | } | |
1315 | fprintf(stderr,"\n"); | |
1316 | } | |
1317 | #endif | |
1318 | ||
fe14fcc3 | 1319 | #ifndef HAS_DUP2 |
a687059c LW |
1320 | dup2(oldfd,newfd) |
1321 | int oldfd; | |
1322 | int newfd; | |
1323 | { | |
79072805 | 1324 | #if defined(HAS_FCNTL) && defined(FFt_DUPFD) |
62b28dd9 | 1325 | close(newfd); |
79072805 | 1326 | fcntl(oldfd, FFt_DUPFD, newfd); |
62b28dd9 | 1327 | #else |
d48672a2 | 1328 | int fdtmp[256]; |
79072805 | 1329 | I32 fdx = 0; |
ae986130 LW |
1330 | int fd; |
1331 | ||
fe14fcc3 LW |
1332 | if (oldfd == newfd) |
1333 | return 0; | |
a687059c | 1334 | close(newfd); |
ae986130 LW |
1335 | while ((fd = dup(oldfd)) != newfd) /* good enough for low fd's */ |
1336 | fdtmp[fdx++] = fd; | |
1337 | while (fdx > 0) | |
1338 | close(fdtmp[--fdx]); | |
62b28dd9 | 1339 | #endif |
a687059c LW |
1340 | } |
1341 | #endif | |
1342 | ||
7c0587c8 | 1343 | #ifndef DOSISH |
79072805 LW |
1344 | I32 |
1345 | my_pclose(ptr) | |
a687059c LW |
1346 | FILE *ptr; |
1347 | { | |
a687059c LW |
1348 | #ifdef VOIDSIG |
1349 | void (*hstat)(), (*istat)(), (*qstat)(); | |
1350 | #else | |
1351 | int (*hstat)(), (*istat)(), (*qstat)(); | |
1352 | #endif | |
1353 | int status; | |
79072805 | 1354 | SV *sv; |
20188a90 | 1355 | int pid; |
a687059c | 1356 | |
79072805 LW |
1357 | sv = *av_fetch(fdpid,fileno(ptr),TRUE); |
1358 | pid = SvIV(sv); | |
1359 | av_store(fdpid,fileno(ptr),Nullsv); | |
a687059c | 1360 | fclose(ptr); |
7c0587c8 LW |
1361 | #ifdef UTS |
1362 | if(kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */ | |
1363 | #endif | |
a687059c LW |
1364 | hstat = signal(SIGHUP, SIG_IGN); |
1365 | istat = signal(SIGINT, SIG_IGN); | |
1366 | qstat = signal(SIGQUIT, SIG_IGN); | |
20188a90 LW |
1367 | pid = wait4pid(pid, &status, 0); |
1368 | signal(SIGHUP, hstat); | |
1369 | signal(SIGINT, istat); | |
1370 | signal(SIGQUIT, qstat); | |
1371 | return(pid < 0 ? pid : status); | |
1372 | } | |
1373 | ||
79072805 | 1374 | I32 |
20188a90 LW |
1375 | wait4pid(pid,statusp,flags) |
1376 | int pid; | |
1377 | int *statusp; | |
1378 | int flags; | |
1379 | { | |
79072805 LW |
1380 | I32 result; |
1381 | SV *sv; | |
1382 | SV** svp; | |
20188a90 LW |
1383 | char spid[16]; |
1384 | ||
1385 | if (!pid) | |
1386 | return -1; | |
20188a90 LW |
1387 | if (pid > 0) { |
1388 | sprintf(spid, "%d", pid); | |
79072805 LW |
1389 | svp = hv_fetch(pidstatus,spid,strlen(spid),FALSE); |
1390 | if (svp && *svp != &sv_undef) { | |
1391 | *statusp = SvIV(*svp); | |
1392 | hv_delete(pidstatus,spid,strlen(spid)); | |
20188a90 LW |
1393 | return pid; |
1394 | } | |
1395 | } | |
1396 | else { | |
79072805 | 1397 | HE *entry; |
20188a90 | 1398 | |
79072805 LW |
1399 | hv_iterinit(pidstatus); |
1400 | if (entry = hv_iternext(pidstatus)) { | |
1401 | pid = atoi(hv_iterkey(entry,statusp)); | |
1402 | sv = hv_iterval(pidstatus,entry); | |
1403 | *statusp = SvIV(sv); | |
20188a90 | 1404 | sprintf(spid, "%d", pid); |
79072805 | 1405 | hv_delete(pidstatus,spid,strlen(spid)); |
20188a90 LW |
1406 | return pid; |
1407 | } | |
1408 | } | |
79072805 LW |
1409 | #ifdef HAS_WAIT4 |
1410 | return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *)); | |
1411 | #else | |
1412 | #ifdef HAS_WAITPID | |
1413 | return waitpid(pid,statusp,flags); | |
1414 | #else | |
20188a90 LW |
1415 | if (flags) |
1416 | fatal("Can't do waitpid with flags"); | |
a687059c | 1417 | else { |
20188a90 LW |
1418 | while ((result = wait(statusp)) != pid && pid > 0 && result >= 0) |
1419 | pidgone(result,*statusp); | |
a687059c | 1420 | if (result < 0) |
20188a90 | 1421 | *statusp = -1; |
a687059c | 1422 | } |
e5d73d77 | 1423 | return result; |
a687059c | 1424 | #endif |
20188a90 | 1425 | #endif |
a687059c | 1426 | } |
7c0587c8 | 1427 | #endif /* !DOSISH */ |
a687059c | 1428 | |
7c0587c8 | 1429 | void |
de3bb511 | 1430 | /*SUPPRESS 590*/ |
a687059c LW |
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 LW |
1439 | sv = *hv_fetch(pidstatus,spid,strlen(spid),TRUE); |
1440 | SvUPGRADE(sv,SVt_IV); | |
1441 | SvIV(sv) = status; | |
20188a90 | 1442 | return; |
a687059c LW |
1443 | } |
1444 | ||
7c0587c8 LW |
1445 | #ifdef atarist |
1446 | int pclose(); | |
79072805 LW |
1447 | I32 |
1448 | my_pclose(ptr) | |
7c0587c8 | 1449 | FILE *ptr; |
a687059c | 1450 | { |
7c0587c8 | 1451 | return pclose(ptr); |
a687059c | 1452 | } |
7c0587c8 | 1453 | #endif |
9f68db38 LW |
1454 | |
1455 | void | |
1456 | repeatcpy(to,from,len,count) | |
1457 | register char *to; | |
1458 | register char *from; | |
79072805 LW |
1459 | I32 len; |
1460 | register I32 count; | |
9f68db38 | 1461 | { |
79072805 | 1462 | register I32 todo; |
9f68db38 LW |
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 LW |
1478 | |
1479 | #ifndef CASTNEGFLOAT | |
1480 | unsigned long | |
79072805 | 1481 | cast_ulong(f) |
0f85fab0 LW |
1482 | double f; |
1483 | { | |
1484 | long along; | |
1485 | ||
27e2fb84 | 1486 | #if CASTFLAGS & 2 |
34de22dd LW |
1487 | # define BIGDOUBLE 2147483648.0 |
1488 | if (f >= BIGDOUBLE) | |
1489 | return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000; | |
1490 | #endif | |
0f85fab0 LW |
1491 | if (f >= 0.0) |
1492 | return (unsigned long)f; | |
1493 | along = (long)f; | |
1494 | return (unsigned long)along; | |
1495 | } | |
1496 | #endif | |
62b28dd9 | 1497 | |
fe14fcc3 | 1498 | #ifndef HAS_RENAME |
79072805 | 1499 | I32 |
62b28dd9 LW |
1500 | same_dirent(a,b) |
1501 | char *a; | |
1502 | char *b; | |
1503 | { | |
1504 | char *fa = rindex(a,'/'); | |
1505 | char *fb = rindex(b,'/'); | |
1506 | struct stat tmpstatbuf1; | |
1507 | struct stat tmpstatbuf2; | |
1508 | #ifndef MAXPATHLEN | |
1509 | #define MAXPATHLEN 1024 | |
1510 | #endif | |
1511 | char tmpbuf[MAXPATHLEN+1]; | |
1512 | ||
1513 | if (fa) | |
1514 | fa++; | |
1515 | else | |
1516 | fa = a; | |
1517 | if (fb) | |
1518 | fb++; | |
1519 | else | |
1520 | fb = b; | |
1521 | if (strNE(a,b)) | |
1522 | return FALSE; | |
1523 | if (fa == a) | |
6eb13c3b | 1524 | strcpy(tmpbuf,"."); |
62b28dd9 LW |
1525 | else |
1526 | strncpy(tmpbuf, a, fa - a); | |
1527 | if (stat(tmpbuf, &tmpstatbuf1) < 0) | |
1528 | return FALSE; | |
1529 | if (fb == b) | |
6eb13c3b | 1530 | strcpy(tmpbuf,"."); |
62b28dd9 LW |
1531 | else |
1532 | strncpy(tmpbuf, b, fb - b); | |
1533 | if (stat(tmpbuf, &tmpstatbuf2) < 0) | |
1534 | return FALSE; | |
1535 | return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev && | |
1536 | tmpstatbuf1.st_ino == tmpstatbuf2.st_ino; | |
1537 | } | |
fe14fcc3 LW |
1538 | #endif /* !HAS_RENAME */ |
1539 | ||
1540 | unsigned long | |
79072805 | 1541 | scan_oct(start, len, retlen) |
fe14fcc3 | 1542 | char *start; |
79072805 LW |
1543 | I32 len; |
1544 | I32 *retlen; | |
fe14fcc3 LW |
1545 | { |
1546 | register char *s = start; | |
1547 | register unsigned long retval = 0; | |
1548 | ||
1549 | while (len-- && *s >= '0' && *s <= '7') { | |
1550 | retval <<= 3; | |
1551 | retval |= *s++ - '0'; | |
1552 | } | |
1553 | *retlen = s - start; | |
1554 | return retval; | |
1555 | } | |
1556 | ||
1557 | unsigned long | |
79072805 | 1558 | scan_hex(start, len, retlen) |
fe14fcc3 | 1559 | char *start; |
79072805 LW |
1560 | I32 len; |
1561 | I32 *retlen; | |
fe14fcc3 LW |
1562 | { |
1563 | register char *s = start; | |
1564 | register unsigned long retval = 0; | |
1565 | char *tmp; | |
1566 | ||
1567 | while (len-- && *s && (tmp = index(hexdigit, *s))) { | |
1568 | retval <<= 4; | |
1569 | retval |= (tmp - hexdigit) & 15; | |
1570 | s++; | |
1571 | } | |
1572 | *retlen = s - start; | |
1573 | return retval; | |
1574 | } |