Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* util.c |
a687059c | 2 | * |
a0d0e21e | 3 | * Copyright (c) 1991-1994, 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 | 7 | * |
8d063cd8 | 8 | */ |
a0d0e21e LW |
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 LW |
23 | # include <unistd.h> |
24 | #endif | |
25 | ||
a687059c LW |
26 | #ifdef I_VFORK |
27 | # include <vfork.h> | |
28 | #endif | |
29 | ||
fe14fcc3 LW |
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 LW |
39 | #ifdef LEAKTEST |
40 | static void xstat _((void)); | |
41 | #endif | |
42 | ||
de3bb511 LW |
43 | #ifndef safemalloc |
44 | ||
8d063cd8 LW |
45 | /* paranoid version of malloc */ |
46 | ||
a687059c LW |
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 LW |
52 | char * |
53 | safemalloc(size) | |
62b28dd9 LW |
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 LW |
61 | #ifdef MSDOS |
62 | if (size > 0xffff) { | |
63 | fprintf(stderr, "Allocation too large: %lx\n", size) FLUSH; | |
79072805 | 64 | my_exit(1); |
62b28dd9 LW |
65 | } |
66 | #endif /* MSDOS */ | |
34de22dd LW |
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 LW |
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 LW |
76 | #endif |
77 | if (ptr != Nullch) | |
78 | return ptr; | |
7c0587c8 LW |
79 | else if (nomemok) |
80 | return Nullch; | |
8d063cd8 | 81 | else { |
79072805 LW |
82 | fputs(no_mem,stderr) FLUSH; |
83 | my_exit(1); | |
8d063cd8 LW |
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 LW |
95 | #else |
96 | unsigned long size; | |
97 | #endif /* MSDOS */ | |
8d063cd8 LW |
98 | { |
99 | char *ptr; | |
d48672a2 | 100 | #ifndef STANDARD_C |
8d063cd8 | 101 | char *realloc(); |
d48672a2 | 102 | #endif /* ! STANDARD_C */ |
8d063cd8 | 103 | |
62b28dd9 LW |
104 | #ifdef MSDOS |
105 | if (size > 0xffff) { | |
106 | fprintf(stderr, "Reallocation too large: %lx\n", size) FLUSH; | |
79072805 | 107 | my_exit(1); |
62b28dd9 LW |
108 | } |
109 | #endif /* MSDOS */ | |
378cc40b | 110 | if (!where) |
463ee0b2 | 111 | croak("Null realloc"); |
34de22dd LW |
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 LW |
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 LW |
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 LW |
130 | if (ptr != Nullch) |
131 | return ptr; | |
7c0587c8 LW |
132 | else if (nomemok) |
133 | return Nullch; | |
8d063cd8 | 134 | else { |
79072805 LW |
135 | fputs(no_mem,stderr) FLUSH; |
136 | my_exit(1); | |
8d063cd8 LW |
137 | } |
138 | /*NOTREACHED*/ | |
139 | } | |
140 | ||
141 | /* safe version of free */ | |
142 | ||
a687059c | 143 | void |
8d063cd8 LW |
144 | safefree(where) |
145 | char *where; | |
146 | { | |
79072805 LW |
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 LW |
154 | free(where); |
155 | } | |
8d063cd8 LW |
156 | } |
157 | ||
de3bb511 LW |
158 | #endif /* !safemalloc */ |
159 | ||
a687059c LW |
160 | #ifdef LEAKTEST |
161 | ||
162 | #define ALIGN sizeof(long) | |
8d063cd8 LW |
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 LW |
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 LW |
177 | |
178 | char * | |
a687059c LW |
179 | safexrealloc(where,size) |
180 | char *where; | |
181 | MEM_SIZE size; | |
182 | { | |
a0d0e21e LW |
183 | register char *new = saferealloc(where - ALIGN, size + ALIGN); |
184 | return new + ALIGN; | |
a687059c LW |
185 | } |
186 | ||
187 | void | |
188 | safexfree(where) | |
189 | char *where; | |
190 | { | |
79072805 | 191 | I32 x; |
a687059c LW |
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 LW |
208 | fprintf(stderr,"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]); |
209 | lastxcount[i] = xcount[i]; | |
8d063cd8 LW |
210 | } |
211 | } | |
8d063cd8 | 212 | } |
a687059c LW |
213 | |
214 | #endif /* LEAKTEST */ | |
8d063cd8 LW |
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 LW |
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 LW |
226 | char *origto = to; |
227 | ||
228 | for (; from < fromend; from++,to++) { | |
378cc40b LW |
229 | if (*from == '\\') { |
230 | if (from[1] == delim) | |
231 | from++; | |
232 | else if (from[1] == '\\') | |
233 | *to++ = *from++; | |
234 | } | |
8d063cd8 LW |
235 | else if (*from == delim) |
236 | break; | |
237 | *to = *from; | |
238 | } | |
239 | *to = '\0'; | |
a687059c | 240 | *retlen = to - origto; |
8d063cd8 LW |
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 LW |
246 | |
247 | char * | |
248 | instr(big, little) | |
378cc40b LW |
249 | register char *big; |
250 | register char *little; | |
251 | { | |
252 | register char *s, *x; | |
79072805 | 253 | register I32 first; |
378cc40b | 254 | |
a687059c LW |
255 | if (!little) |
256 | return big; | |
257 | first = *little++; | |
378cc40b LW |
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 LW |
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 LW |
292 | if (bigend - big < littleend - little) |
293 | return Nullch; | |
a687059c LW |
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 LW |
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 LW |
322 | register char *littleend = lend; |
323 | ||
a0d0e21e | 324 | if (!first && little >= littleend) |
a687059c LW |
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 LW |
344 | fbm_compile(sv, iflag) |
345 | SV *sv; | |
346 | I32 iflag; | |
378cc40b | 347 | { |
a687059c LW |
348 | register unsigned char *s; |
349 | register unsigned char *table; | |
79072805 LW |
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 LW |
357 | s = table - 2; |
358 | for (i = 0; i < 256; i++) { | |
378cc40b LW |
359 | table[i] = len; |
360 | } | |
361 | i = 0; | |
463ee0b2 | 362 | while (s >= (unsigned char*)(SvPVX(sv))) |
a687059c LW |
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 LW |
371 | j = fold[*s]; |
372 | table[j] = i; | |
373 | table[*s] = i; | |
374 | } | |
375 | #endif /* pdp11 */ | |
376 | else | |
377 | table[*s] = i; | |
378 | } | |
378cc40b LW |
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 LW |
387 | register U32 tmp, foldtmp; |
388 | SvCASEFOLD_on(sv); | |
a687059c LW |
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 LW |
405 | } |
406 | } | |
79072805 LW |
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 LW |
410 | } |
411 | ||
378cc40b | 412 | char * |
79072805 | 413 | fbm_instr(big, bigend, littlestr) |
a687059c LW |
414 | unsigned char *big; |
415 | register unsigned char *bigend; | |
79072805 | 416 | SV *littlestr; |
378cc40b | 417 | { |
a687059c | 418 | register unsigned char *s; |
79072805 LW |
419 | register I32 tmp; |
420 | register I32 littlelen; | |
a687059c LW |
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 LW |
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 LW |
434 | littlelen = SvCUR(littlestr); |
435 | if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */ | |
0f85fab0 LW |
436 | if (littlelen > bigend - big) |
437 | return Nullch; | |
463ee0b2 | 438 | little = (unsigned char*)SvPVX(littlestr); |
79072805 | 439 | if (SvCASEFOLD(littlestr)) { /* oops, fake it */ |
a687059c LW |
440 | big = bigend - littlelen; /* just start near end */ |
441 | if (bigend[-1] == '\n' && little[littlelen-1] != '\n') | |
442 | big--; | |
378cc40b LW |
443 | } |
444 | else { | |
a687059c LW |
445 | s = bigend - littlelen; |
446 | if (*s == *little && bcmp(s,little,littlelen)==0) | |
447 | return (char*)s; /* how sweet it is */ | |
34de22dd LW |
448 | else if (bigend[-1] == '\n' && little[littlelen-1] != '\n' |
449 | && s > big) { | |
a687059c LW |
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 LW |
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 LW |
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 LW |
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 LW |
491 | } |
492 | } | |
493 | } | |
494 | else { | |
20188a90 | 495 | if (s < bigend) { |
a687059c | 496 | top2: |
de3bb511 | 497 | /*SUPPRESS 560*/ |
a687059c | 498 | if (tmp = table[*s]) { |
62b28dd9 LW |
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 LW |
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 LW |
524 | } |
525 | } | |
526 | return Nullch; | |
527 | } | |
528 | ||
529 | char * | |
530 | screaminstr(bigstr, littlestr) | |
79072805 LW |
531 | SV *bigstr; |
532 | SV *littlestr; | |
378cc40b | 533 | { |
a687059c LW |
534 | register unsigned char *s, *x; |
535 | register unsigned char *big; | |
79072805 LW |
536 | register I32 pos; |
537 | register I32 previous; | |
538 | register I32 first; | |
a687059c LW |
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 LW |
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 LW |
558 | if (big[pos-previous] != first && big[pos-previous] != fold[first]) |
559 | continue; | |
de3bb511 LW |
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 LW |
572 | ); |
573 | } | |
574 | else { | |
575 | do { | |
988174c1 LW |
576 | if (big[pos-previous] != first) |
577 | continue; | |
de3bb511 LW |
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 LW |
589 | } |
590 | #else /* !POINTERRIGOR */ | |
591 | big -= previous; | |
79072805 | 592 | if (SvCASEFOLD(littlestr)) { /* case insignificant? */ |
de3bb511 | 593 | do { |
988174c1 LW |
594 | if (big[pos] != first && big[pos] != fold[first]) |
595 | continue; | |
a687059c LW |
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 LW |
608 | ); |
609 | } | |
610 | else { | |
611 | do { | |
988174c1 LW |
612 | if (big[pos] != first) |
613 | continue; | |
a687059c LW |
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 LW |
626 | ); |
627 | } | |
de3bb511 | 628 | #endif /* POINTERRIGOR */ |
8d063cd8 LW |
629 | return Nullch; |
630 | } | |
631 | ||
79072805 LW |
632 | I32 |
633 | ibcmp(a,b,len) | |
a0d0e21e LW |
634 | register U8 *a; |
635 | register U8 *b; | |
79072805 LW |
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 LW |
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 LW |
658 | New(902,newaddr,strlen(sv)+1,char); |
659 | (void)strcpy(newaddr,sv); | |
8d063cd8 LW |
660 | return newaddr; |
661 | } | |
662 | ||
a687059c LW |
663 | /* same thing but with a known length */ |
664 | ||
665 | char * | |
a0d0e21e | 666 | savepvn(sv, len) |
79072805 LW |
667 | char *sv; |
668 | register I32 len; | |
a687059c LW |
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 LW |
674 | newaddr[len] = '\0'; /* is now */ |
675 | return newaddr; | |
676 | } | |
677 | ||
a0d0e21e | 678 | #if !defined(I_STDARG) && !defined(I_VARARGS) |
8d063cd8 | 679 | |
8990e307 LW |
680 | /* |
681 | * Fallback on the old hackers way of doing varargs | |
682 | */ | |
8d063cd8 | 683 | |
378cc40b | 684 | /*VARARGS1*/ |
7c0587c8 | 685 | char * |
378cc40b LW |
686 | mess(pat,a1,a2,a3,a4) |
687 | char *pat; | |
a687059c | 688 | long a1, a2, a3, a4; |
378cc40b LW |
689 | { |
690 | char *s; | |
79072805 LW |
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 LW |
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 AD |
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 LW |
714 | if (GvIO(last_in_gv) && |
715 | IoLINES(GvIOp(last_in_gv)) ) { | |
2304df62 AD |
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 AD |
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 LW |
729 | else |
730 | return buf; | |
378cc40b LW |
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 LW |
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 LW |
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 LW |
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 LW |
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 LW |
774 | #else |
775 | /*VARARGS0*/ | |
de3bb511 | 776 | char * |
8990e307 | 777 | mess(pat, args) |
a687059c | 778 | char *pat; |
2304df62 | 779 | va_list *args; |
8990e307 LW |
780 | #endif |
781 | { | |
a687059c | 782 | char *s; |
79072805 LW |
783 | SV *tmpstr; |
784 | I32 usermess; | |
d48672a2 | 785 | #ifndef HAS_VPRINTF |
85e6fe83 | 786 | #ifdef USE_CHAR_VSPRINTF |
a687059c LW |
787 | char *vsprintf(); |
788 | #else | |
79072805 | 789 | I32 vsprintf(); |
a687059c | 790 | #endif |
d48672a2 | 791 | #endif |
a687059c | 792 | |
de3bb511 LW |
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 LW |
799 | } |
800 | else { | |
2304df62 | 801 | (void) vsprintf(s,pat,*args); |
de3bb511 LW |
802 | s += strlen(s); |
803 | } | |
2304df62 | 804 | va_end(*args); |
a687059c | 805 | |
a687059c | 806 | if (s[-1] != '\n') { |
2304df62 AD |
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 LW |
815 | if (GvIO(last_in_gv) && |
816 | IoLINES(GvIOp(last_in_gv)) ) { | |
2304df62 AD |
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 AD |
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 LW |
828 | |
829 | if (usermess) | |
463ee0b2 | 830 | return SvPVX(tmpstr); |
de3bb511 LW |
831 | else |
832 | return buf; | |
a687059c LW |
833 | } |
834 | ||
8990e307 | 835 | #ifdef STANDARD_C |
79072805 | 836 | void |
8990e307 | 837 | croak(char* pat, ...) |
463ee0b2 | 838 | #else |
8990e307 LW |
839 | /*VARARGS0*/ |
840 | void | |
841 | croak(pat, va_alist) | |
842 | char *pat; | |
843 | va_dcl | |
463ee0b2 | 844 | #endif |
a687059c LW |
845 | { |
846 | va_list args; | |
de3bb511 | 847 | char *message; |
a687059c | 848 | |
a0d0e21e | 849 | #ifdef I_STDARG |
8990e307 LW |
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 LW |
856 | if (in_eval) { |
857 | restartop = die_where(message); | |
79072805 | 858 | longjmp(top_env, 3); |
a0d0e21e | 859 | } |
de3bb511 | 860 | fputs(message,stderr); |
a687059c LW |
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 LW |
866 | } |
867 | ||
8990e307 LW |
868 | void |
869 | #ifdef STANDARD_C | |
870 | warn(char* pat,...) | |
463ee0b2 | 871 | #else |
8990e307 LW |
872 | /*VARARGS0*/ |
873 | warn(pat,va_alist) | |
874 | char *pat; | |
875 | va_dcl | |
463ee0b2 | 876 | #endif |
a687059c LW |
877 | { |
878 | va_list args; | |
de3bb511 | 879 | char *message; |
a687059c | 880 | |
a0d0e21e | 881 | #ifdef I_STDARG |
8990e307 LW |
882 | va_start(args, pat); |
883 | #else | |
a687059c | 884 | va_start(args); |
8990e307 | 885 | #endif |
2304df62 | 886 | message = mess(pat, &args); |
a687059c LW |
887 | va_end(args); |
888 | ||
de3bb511 | 889 | fputs(message,stderr); |
a687059c | 890 | #ifdef LEAKTEST |
79072805 | 891 | DEBUG_L(xstat()); |
a687059c LW |
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 LW |
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 LW |
905 | I32 j; |
906 | I32 max; | |
fe14fcc3 LW |
907 | char **tmpenv; |
908 | ||
de3bb511 | 909 | /*SUPPRESS 530*/ |
fe14fcc3 LW |
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 LW |
914 | tmpenv[max] = Nullch; |
915 | environ = tmpenv; /* tell exec where it is now */ | |
916 | } | |
a687059c LW |
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 LW |
926 | environ[i+1] = Nullch; /* make sure it's null terminated */ |
927 | } | |
fe14fcc3 LW |
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 LW |
933 | #else |
934 | /* MS-DOS requires environment variable names to be in uppercase */ | |
fe14fcc3 LW |
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 LW |
940 | (void)sprintf(environ[i] + strlen(nam),"=%s",val); |
941 | #endif /* MSDOS */ | |
8d063cd8 LW |
942 | } |
943 | ||
79072805 LW |
944 | I32 |
945 | setenv_getix(nam) | |
8d063cd8 LW |
946 | char *nam; |
947 | { | |
79072805 | 948 | register I32 i, len = strlen(nam); |
8d063cd8 LW |
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 LW |
957 | |
958 | #ifdef EUNICE | |
79072805 | 959 | I32 |
378cc40b LW |
960 | unlnk(f) /* unlink all versions of a file */ |
961 | char *f; | |
962 | { | |
79072805 | 963 | I32 i; |
378cc40b LW |
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 LW |
973 | register char *from; |
974 | register char *to; | |
79072805 | 975 | register I32 len; |
378cc40b LW |
976 | { |
977 | char *retval = to; | |
978 | ||
7c0587c8 LW |
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 LW |
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 LW |
998 | { |
999 | char *retval = loc; | |
1000 | ||
1001 | while (len--) | |
1002 | *loc++ = 0; | |
1003 | return retval; | |
1004 | } | |
1005 | #endif | |
7c0587c8 LW |
1006 | |
1007 | #ifndef HAS_MEMCMP | |
79072805 | 1008 | I32 |
7c0587c8 LW |
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 LW |
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 LW |
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 LW |
1039 | #ifndef _IOSTRG |
1040 | #define _IOSTRG 0 | |
1041 | #endif | |
a687059c LW |
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 LW |
1046 | return(dest); |
1047 | #else | |
1048 | return 0; /* perl doesn't use return value */ | |
1049 | #endif | |
1050 | } | |
1051 | ||
a687059c LW |
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 LW |
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 LW |
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 LW |
1094 | } u; |
1095 | ||
ffed7fef | 1096 | #if BYTEORDER == 0x1234 |
a687059c LW |
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 LW |
1106 | register I32 o; |
1107 | register I32 s; | |
a687059c | 1108 | |
ffed7fef LW |
1109 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1110 | u.c[o & 0xf] = (l >> s) & 255; | |
a687059c LW |
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 LW |
1124 | } u; |
1125 | ||
ffed7fef | 1126 | #if BYTEORDER == 0x1234 |
a687059c LW |
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 LW |
1136 | register I32 o; |
1137 | register I32 s; | |
a687059c LW |
1138 | |
1139 | u.l = l; | |
1140 | l = 0; | |
ffed7fef LW |
1141 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1142 | l |= (u.c[o & 0xf] & 255) << s; | |
a687059c LW |
1143 | } |
1144 | return l; | |
1145 | #endif | |
1146 | #endif | |
1147 | } | |
1148 | ||
ffed7fef | 1149 | #endif /* BYTEORDER != 0x4321 */ |
988174c1 LW |
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 LW |
1169 | register I32 i; \ |
1170 | register I32 s; \ | |
988174c1 LW |
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 LW |
1186 | register I32 i; \ |
1187 | register I32 s; \ | |
988174c1 LW |
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 LW |
1212 | char *cmd; |
1213 | char *mode; | |
1214 | { | |
1215 | int p[2]; | |
79072805 LW |
1216 | register I32 this, that; |
1217 | register I32 pid; | |
1218 | SV *sv; | |
1219 | I32 doexec = strNE(cmd,"-"); | |
a687059c LW |
1220 | |
1221 | if (pipe(p) < 0) | |
1222 | return Nullfp; | |
1223 | this = (*mode == 'w'); | |
1224 | that = !this; | |
463ee0b2 LW |
1225 | if (tainting) { |
1226 | if (doexec) { | |
1227 | taint_env(); | |
1228 | taint_proper("Insecure %s%s", "EXEC"); | |
1229 | } | |
d48672a2 | 1230 | } |
a687059c LW |
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 LW |
1236 | return Nullfp; |
1237 | } | |
1238 | sleep(5); | |
1239 | } | |
1240 | if (pid == 0) { | |
79072805 LW |
1241 | GV* tmpgv; |
1242 | ||
a687059c LW |
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 LW |
1252 | int fd; |
1253 | ||
1254 | #ifndef NOFILE | |
1255 | #define NOFILE 20 | |
1256 | #endif | |
d48672a2 | 1257 | for (fd = maxsysfd + 1; fd < NOFILE; fd++) |
ae986130 LW |
1258 | close(fd); |
1259 | #endif | |
a687059c LW |
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 LW |
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 LW |
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 LW |
1282 | forkprocess = pid; |
1283 | return fdopen(p[this], mode); | |
1284 | } | |
7c0587c8 LW |
1285 | #else |
1286 | #ifdef atarist | |
1287 | FILE *popen(); | |
1288 | FILE * | |
79072805 | 1289 | my_popen(cmd,mode) |
7c0587c8 LW |
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 LW |
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 LW |
1309 | fprintf(stderr," %d",fd); |
1310 | } | |
1311 | fprintf(stderr,"\n"); | |
1312 | } | |
1313 | #endif | |
1314 | ||
fe14fcc3 | 1315 | #ifndef HAS_DUP2 |
a687059c LW |
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 LW |
1326 | int fd; |
1327 | ||
fe14fcc3 LW |
1328 | if (oldfd == newfd) |
1329 | return 0; | |
a687059c | 1330 | close(newfd); |
ae986130 LW |
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 LW |
1336 | } |
1337 | #endif | |
1338 | ||
7c0587c8 | 1339 | #ifndef DOSISH |
a0d0e21e | 1340 | #ifndef VMS /* VMS' my_pclose() is in VMS.c */ |
79072805 LW |
1341 | I32 |
1342 | my_pclose(ptr) | |
a687059c LW |
1343 | FILE *ptr; |
1344 | { | |
a687059c LW |
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 LW |
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 LW |
1359 | #ifdef UTS |
1360 | if(kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */ | |
1361 | #endif | |
a687059c LW |
1362 | hstat = signal(SIGHUP, SIG_IGN); |
1363 | istat = signal(SIGINT, SIG_IGN); | |
1364 | qstat = signal(SIGQUIT, SIG_IGN); | |
20188a90 LW |
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 LW |
1373 | wait4pid(pid,statusp,flags) |
1374 | int pid; | |
1375 | int *statusp; | |
1376 | int flags; | |
1377 | { | |
79072805 LW |
1378 | SV *sv; |
1379 | SV** svp; | |
20188a90 LW |
1380 | char spid[16]; |
1381 | ||
1382 | if (!pid) | |
1383 | return -1; | |
20188a90 LW |
1384 | if (pid > 0) { |
1385 | sprintf(spid, "%d", pid); | |
79072805 LW |
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 LW |
1390 | return pid; |
1391 | } | |
1392 | } | |
1393 | else { | |
79072805 | 1394 | HE *entry; |
20188a90 | 1395 | |
79072805 LW |
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 LW |
1403 | return pid; |
1404 | } | |
1405 | } | |
79072805 LW |
1406 | #ifdef HAS_WAITPID |
1407 | return waitpid(pid,statusp,flags); | |
1408 | #else | |
a0d0e21e LW |
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 LW |
1423 | } |
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 | 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 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 | |
463ee0b2 | 1480 | U32 |
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 | } | |
ed6116ce LW |
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 LW |
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 LW |
1534 | same_dirent(a,b) |
1535 | char *a; | |
1536 | char *b; | |
1537 | { | |
93a17b20 LW |
1538 | char *fa = strrchr(a,'/'); |
1539 | char *fb = strrchr(b,'/'); | |
62b28dd9 LW |
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 LW |
1559 | else |
1560 | strncpy(tmpbuf, a, fa - a); | |
a0d0e21e | 1561 | if (Stat(tmpbuf, &tmpstatbuf1) < 0) |
62b28dd9 LW |
1562 | return FALSE; |
1563 | if (fb == b) | |
6eb13c3b | 1564 | strcpy(tmpbuf,"."); |
62b28dd9 LW |
1565 | else |
1566 | strncpy(tmpbuf, b, fb - b); | |
a0d0e21e | 1567 | if (Stat(tmpbuf, &tmpstatbuf2) < 0) |
62b28dd9 LW |
1568 | return FALSE; |
1569 | return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev && | |
1570 | tmpstatbuf1.st_ino == tmpstatbuf2.st_ino; | |
1571 | } | |
fe14fcc3 LW |
1572 | #endif /* !HAS_RENAME */ |
1573 | ||
1574 | unsigned long | |
79072805 | 1575 | scan_oct(start, len, retlen) |
fe14fcc3 | 1576 | char *start; |
79072805 LW |
1577 | I32 len; |
1578 | I32 *retlen; | |
fe14fcc3 LW |
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 LW |
1594 | I32 len; |
1595 | I32 *retlen; | |
fe14fcc3 LW |
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 LW |
1602 | retval <<= 4; |
1603 | retval |= (tmp - hexdigit) & 15; | |
1604 | s++; | |
1605 | } | |
1606 | *retlen = s - start; | |
1607 | return retval; | |
1608 | } |