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 | |
ecfc5424 | 22 | /* Omit this -- it causes too much grief on mixed systems. |
85e6fe83 | 23 | #ifdef I_UNISTD |
8990e307 LW |
24 | # include <unistd.h> |
25 | #endif | |
ecfc5424 | 26 | */ |
8990e307 | 27 | |
a687059c LW |
28 | #ifdef I_VFORK |
29 | # include <vfork.h> | |
30 | #endif | |
31 | ||
94b6baf5 AD |
32 | /* Put this after #includes because fork and vfork prototypes may |
33 | conflict. | |
34 | */ | |
35 | #ifndef HAS_VFORK | |
36 | # define vfork fork | |
37 | #endif | |
38 | ||
fe14fcc3 LW |
39 | #ifdef I_FCNTL |
40 | # include <fcntl.h> | |
41 | #endif | |
42 | #ifdef I_SYS_FILE | |
43 | # include <sys/file.h> | |
44 | #endif | |
45 | ||
8d063cd8 | 46 | #define FLUSH |
8d063cd8 | 47 | |
a0d0e21e LW |
48 | #ifdef LEAKTEST |
49 | static void xstat _((void)); | |
50 | #endif | |
51 | ||
de3bb511 LW |
52 | #ifndef safemalloc |
53 | ||
8d063cd8 LW |
54 | /* paranoid version of malloc */ |
55 | ||
a687059c LW |
56 | /* NOTE: Do not call the next three routines directly. Use the macros |
57 | * in handy.h, so that we can easily redefine everything to do tracking of | |
58 | * allocated hunks back to the original New to track down any memory leaks. | |
59 | */ | |
60 | ||
8d063cd8 LW |
61 | char * |
62 | safemalloc(size) | |
62b28dd9 LW |
63 | #ifdef MSDOS |
64 | unsigned long size; | |
65 | #else | |
8d063cd8 | 66 | MEM_SIZE size; |
62b28dd9 | 67 | #endif /* MSDOS */ |
8d063cd8 | 68 | { |
2304df62 | 69 | char *ptr; |
62b28dd9 LW |
70 | #ifdef MSDOS |
71 | if (size > 0xffff) { | |
72 | fprintf(stderr, "Allocation too large: %lx\n", size) FLUSH; | |
79072805 | 73 | my_exit(1); |
62b28dd9 LW |
74 | } |
75 | #endif /* MSDOS */ | |
34de22dd LW |
76 | #ifdef DEBUGGING |
77 | if ((long)size < 0) | |
463ee0b2 | 78 | croak("panic: malloc"); |
34de22dd | 79 | #endif |
8d063cd8 | 80 | ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
79072805 LW |
81 | #if !(defined(I286) || defined(atarist)) |
82 | DEBUG_m(fprintf(stderr,"0x%x: (%05d) malloc %ld bytes\n",ptr,an++,(long)size)); | |
83 | #else | |
84 | DEBUG_m(fprintf(stderr,"0x%lx: (%05d) malloc %ld bytes\n",ptr,an++,(long)size)); | |
8d063cd8 LW |
85 | #endif |
86 | if (ptr != Nullch) | |
87 | return ptr; | |
7c0587c8 LW |
88 | else if (nomemok) |
89 | return Nullch; | |
8d063cd8 | 90 | else { |
79072805 LW |
91 | fputs(no_mem,stderr) FLUSH; |
92 | my_exit(1); | |
8d063cd8 LW |
93 | } |
94 | /*NOTREACHED*/ | |
95 | } | |
96 | ||
97 | /* paranoid version of realloc */ | |
98 | ||
99 | char * | |
100 | saferealloc(where,size) | |
101 | char *where; | |
62b28dd9 | 102 | #ifndef MSDOS |
8d063cd8 | 103 | MEM_SIZE size; |
62b28dd9 LW |
104 | #else |
105 | unsigned long size; | |
106 | #endif /* MSDOS */ | |
8d063cd8 LW |
107 | { |
108 | char *ptr; | |
ecfc5424 | 109 | #if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) |
8d063cd8 | 110 | char *realloc(); |
ecfc5424 | 111 | #endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */ |
8d063cd8 | 112 | |
62b28dd9 LW |
113 | #ifdef MSDOS |
114 | if (size > 0xffff) { | |
115 | fprintf(stderr, "Reallocation too large: %lx\n", size) FLUSH; | |
79072805 | 116 | my_exit(1); |
62b28dd9 LW |
117 | } |
118 | #endif /* MSDOS */ | |
378cc40b | 119 | if (!where) |
463ee0b2 | 120 | croak("Null realloc"); |
34de22dd LW |
121 | #ifdef DEBUGGING |
122 | if ((long)size < 0) | |
463ee0b2 | 123 | croak("panic: realloc"); |
34de22dd | 124 | #endif |
8d063cd8 | 125 | ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */ |
79072805 LW |
126 | |
127 | #if !(defined(I286) || defined(atarist)) | |
128 | DEBUG_m( { | |
8d063cd8 | 129 | fprintf(stderr,"0x%x: (%05d) rfree\n",where,an++); |
7c0587c8 | 130 | fprintf(stderr,"0x%x: (%05d) realloc %ld bytes\n",ptr,an++,(long)size); |
79072805 LW |
131 | } ) |
132 | #else | |
133 | DEBUG_m( { | |
a687059c | 134 | fprintf(stderr,"0x%lx: (%05d) rfree\n",where,an++); |
7c0587c8 | 135 | fprintf(stderr,"0x%lx: (%05d) realloc %ld bytes\n",ptr,an++,(long)size); |
79072805 | 136 | } ) |
8d063cd8 | 137 | #endif |
79072805 | 138 | |
8d063cd8 LW |
139 | if (ptr != Nullch) |
140 | return ptr; | |
7c0587c8 LW |
141 | else if (nomemok) |
142 | return Nullch; | |
8d063cd8 | 143 | else { |
79072805 LW |
144 | fputs(no_mem,stderr) FLUSH; |
145 | my_exit(1); | |
8d063cd8 LW |
146 | } |
147 | /*NOTREACHED*/ | |
148 | } | |
149 | ||
150 | /* safe version of free */ | |
151 | ||
a687059c | 152 | void |
8d063cd8 LW |
153 | safefree(where) |
154 | char *where; | |
155 | { | |
79072805 LW |
156 | #if !(defined(I286) || defined(atarist)) |
157 | DEBUG_m( fprintf(stderr,"0x%x: (%05d) free\n",where,an++)); | |
158 | #else | |
159 | DEBUG_m( fprintf(stderr,"0x%lx: (%05d) free\n",where,an++)); | |
8d063cd8 | 160 | #endif |
378cc40b | 161 | if (where) { |
de3bb511 | 162 | /*SUPPRESS 701*/ |
378cc40b LW |
163 | free(where); |
164 | } | |
8d063cd8 LW |
165 | } |
166 | ||
de3bb511 LW |
167 | #endif /* !safemalloc */ |
168 | ||
a687059c LW |
169 | #ifdef LEAKTEST |
170 | ||
171 | #define ALIGN sizeof(long) | |
8d063cd8 LW |
172 | |
173 | char * | |
a687059c | 174 | safexmalloc(x,size) |
79072805 | 175 | I32 x; |
a687059c | 176 | MEM_SIZE size; |
8d063cd8 | 177 | { |
a687059c | 178 | register char *where; |
8d063cd8 | 179 | |
a687059c LW |
180 | where = safemalloc(size + ALIGN); |
181 | xcount[x]++; | |
182 | where[0] = x % 100; | |
183 | where[1] = x / 100; | |
184 | return where + ALIGN; | |
8d063cd8 | 185 | } |
8d063cd8 LW |
186 | |
187 | char * | |
a687059c LW |
188 | safexrealloc(where,size) |
189 | char *where; | |
190 | MEM_SIZE size; | |
191 | { | |
a0d0e21e LW |
192 | register char *new = saferealloc(where - ALIGN, size + ALIGN); |
193 | return new + ALIGN; | |
a687059c LW |
194 | } |
195 | ||
196 | void | |
197 | safexfree(where) | |
198 | char *where; | |
199 | { | |
79072805 | 200 | I32 x; |
a687059c LW |
201 | |
202 | if (!where) | |
203 | return; | |
204 | where -= ALIGN; | |
205 | x = where[0] + 100 * where[1]; | |
206 | xcount[x]--; | |
207 | safefree(where); | |
208 | } | |
209 | ||
7c0587c8 | 210 | static void |
a687059c | 211 | xstat() |
8d063cd8 | 212 | { |
79072805 | 213 | register I32 i; |
8d063cd8 | 214 | |
a687059c | 215 | for (i = 0; i < MAXXCOUNT; i++) { |
de3bb511 | 216 | if (xcount[i] > lastxcount[i]) { |
a687059c LW |
217 | fprintf(stderr,"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]); |
218 | lastxcount[i] = xcount[i]; | |
8d063cd8 LW |
219 | } |
220 | } | |
8d063cd8 | 221 | } |
a687059c LW |
222 | |
223 | #endif /* LEAKTEST */ | |
8d063cd8 LW |
224 | |
225 | /* copy a string up to some (non-backslashed) delimiter, if any */ | |
226 | ||
227 | char * | |
a687059c | 228 | cpytill(to,from,fromend,delim,retlen) |
62b28dd9 LW |
229 | register char *to; |
230 | register char *from; | |
a687059c | 231 | register char *fromend; |
a0d0e21e | 232 | register int delim; |
79072805 | 233 | I32 *retlen; |
8d063cd8 | 234 | { |
a687059c LW |
235 | char *origto = to; |
236 | ||
237 | for (; from < fromend; from++,to++) { | |
378cc40b LW |
238 | if (*from == '\\') { |
239 | if (from[1] == delim) | |
240 | from++; | |
241 | else if (from[1] == '\\') | |
242 | *to++ = *from++; | |
243 | } | |
8d063cd8 LW |
244 | else if (*from == delim) |
245 | break; | |
246 | *to = *from; | |
247 | } | |
248 | *to = '\0'; | |
a687059c | 249 | *retlen = to - origto; |
8d063cd8 LW |
250 | return from; |
251 | } | |
252 | ||
253 | /* return ptr to little string in big string, NULL if not found */ | |
378cc40b | 254 | /* This routine was donated by Corey Satten. */ |
8d063cd8 LW |
255 | |
256 | char * | |
257 | instr(big, little) | |
378cc40b LW |
258 | register char *big; |
259 | register char *little; | |
260 | { | |
261 | register char *s, *x; | |
79072805 | 262 | register I32 first; |
378cc40b | 263 | |
a687059c LW |
264 | if (!little) |
265 | return big; | |
266 | first = *little++; | |
378cc40b LW |
267 | if (!first) |
268 | return big; | |
269 | while (*big) { | |
270 | if (*big++ != first) | |
271 | continue; | |
272 | for (x=big,s=little; *s; /**/ ) { | |
273 | if (!*x) | |
274 | return Nullch; | |
275 | if (*s++ != *x++) { | |
276 | s--; | |
277 | break; | |
278 | } | |
279 | } | |
280 | if (!*s) | |
281 | return big-1; | |
282 | } | |
283 | return Nullch; | |
284 | } | |
8d063cd8 | 285 | |
a687059c LW |
286 | /* same as instr but allow embedded nulls */ |
287 | ||
288 | char * | |
289 | ninstr(big, bigend, little, lend) | |
290 | register char *big; | |
291 | register char *bigend; | |
292 | char *little; | |
293 | char *lend; | |
8d063cd8 | 294 | { |
a687059c | 295 | register char *s, *x; |
79072805 | 296 | register I32 first = *little; |
a687059c | 297 | register char *littleend = lend; |
378cc40b | 298 | |
a0d0e21e | 299 | if (!first && little >= littleend) |
a687059c | 300 | return big; |
de3bb511 LW |
301 | if (bigend - big < littleend - little) |
302 | return Nullch; | |
a687059c LW |
303 | bigend -= littleend - little++; |
304 | while (big <= bigend) { | |
305 | if (*big++ != first) | |
306 | continue; | |
307 | for (x=big,s=little; s < littleend; /**/ ) { | |
308 | if (*s++ != *x++) { | |
309 | s--; | |
310 | break; | |
311 | } | |
312 | } | |
313 | if (s >= littleend) | |
314 | return big-1; | |
378cc40b | 315 | } |
a687059c LW |
316 | return Nullch; |
317 | } | |
318 | ||
319 | /* reverse of the above--find last substring */ | |
320 | ||
321 | char * | |
322 | rninstr(big, bigend, little, lend) | |
323 | register char *big; | |
324 | char *bigend; | |
325 | char *little; | |
326 | char *lend; | |
327 | { | |
328 | register char *bigbeg; | |
329 | register char *s, *x; | |
79072805 | 330 | register I32 first = *little; |
a687059c LW |
331 | register char *littleend = lend; |
332 | ||
a0d0e21e | 333 | if (!first && little >= littleend) |
a687059c LW |
334 | return bigend; |
335 | bigbeg = big; | |
336 | big = bigend - (littleend - little++); | |
337 | while (big >= bigbeg) { | |
338 | if (*big-- != first) | |
339 | continue; | |
340 | for (x=big+2,s=little; s < littleend; /**/ ) { | |
341 | if (*s++ != *x++) { | |
342 | s--; | |
343 | break; | |
344 | } | |
345 | } | |
346 | if (s >= littleend) | |
347 | return big+1; | |
378cc40b | 348 | } |
a687059c | 349 | return Nullch; |
378cc40b | 350 | } |
a687059c | 351 | |
378cc40b | 352 | void |
79072805 LW |
353 | fbm_compile(sv, iflag) |
354 | SV *sv; | |
355 | I32 iflag; | |
378cc40b | 356 | { |
a687059c LW |
357 | register unsigned char *s; |
358 | register unsigned char *table; | |
79072805 LW |
359 | register U32 i; |
360 | register U32 len = SvCUR(sv); | |
361 | I32 rarest = 0; | |
362 | U32 frequency = 256; | |
363 | ||
748a9306 LW |
364 | if (len > 255) |
365 | return; /* can't have offsets that big */ | |
79072805 | 366 | Sv_Grow(sv,len+258); |
463ee0b2 | 367 | table = (unsigned char*)(SvPVX(sv) + len + 1); |
a687059c LW |
368 | s = table - 2; |
369 | for (i = 0; i < 256; i++) { | |
378cc40b LW |
370 | table[i] = len; |
371 | } | |
372 | i = 0; | |
463ee0b2 | 373 | while (s >= (unsigned char*)(SvPVX(sv))) |
a687059c LW |
374 | { |
375 | if (table[*s] == len) { | |
376 | #ifndef pdp11 | |
377 | if (iflag) | |
378 | table[*s] = table[fold[*s]] = i; | |
379 | #else | |
380 | if (iflag) { | |
79072805 | 381 | I32 j; |
a687059c LW |
382 | j = fold[*s]; |
383 | table[j] = i; | |
384 | table[*s] = i; | |
385 | } | |
386 | #endif /* pdp11 */ | |
387 | else | |
388 | table[*s] = i; | |
389 | } | |
378cc40b LW |
390 | s--,i++; |
391 | } | |
79072805 | 392 | sv_upgrade(sv, SVt_PVBM); |
a0d0e21e | 393 | sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */ |
79072805 | 394 | SvVALID_on(sv); |
378cc40b | 395 | |
463ee0b2 | 396 | s = (unsigned char*)(SvPVX(sv)); /* deeper magic */ |
a687059c | 397 | if (iflag) { |
79072805 LW |
398 | register U32 tmp, foldtmp; |
399 | SvCASEFOLD_on(sv); | |
a687059c LW |
400 | for (i = 0; i < len; i++) { |
401 | tmp=freq[s[i]]; | |
402 | foldtmp=freq[fold[s[i]]]; | |
403 | if (tmp < frequency && foldtmp < frequency) { | |
404 | rarest = i; | |
405 | /* choose most frequent among the two */ | |
406 | frequency = (tmp > foldtmp) ? tmp : foldtmp; | |
407 | } | |
408 | } | |
409 | } | |
410 | else { | |
411 | for (i = 0; i < len; i++) { | |
412 | if (freq[s[i]] < frequency) { | |
413 | rarest = i; | |
414 | frequency = freq[s[i]]; | |
415 | } | |
378cc40b LW |
416 | } |
417 | } | |
79072805 LW |
418 | BmRARE(sv) = s[rarest]; |
419 | BmPREVIOUS(sv) = rarest; | |
420 | DEBUG_r(fprintf(stderr,"rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv))); | |
378cc40b LW |
421 | } |
422 | ||
378cc40b | 423 | char * |
79072805 | 424 | fbm_instr(big, bigend, littlestr) |
a687059c LW |
425 | unsigned char *big; |
426 | register unsigned char *bigend; | |
79072805 | 427 | SV *littlestr; |
378cc40b | 428 | { |
a687059c | 429 | register unsigned char *s; |
79072805 LW |
430 | register I32 tmp; |
431 | register I32 littlelen; | |
a687059c LW |
432 | register unsigned char *little; |
433 | register unsigned char *table; | |
434 | register unsigned char *olds; | |
435 | register unsigned char *oldlittle; | |
378cc40b | 436 | |
79072805 | 437 | if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) { |
a0d0e21e LW |
438 | STRLEN len; |
439 | char *l = SvPV(littlestr,len); | |
440 | if (!len) | |
d48672a2 | 441 | return (char*)big; |
a0d0e21e | 442 | return ninstr((char*)big,(char*)bigend, l, l + len); |
d48672a2 | 443 | } |
378cc40b | 444 | |
79072805 LW |
445 | littlelen = SvCUR(littlestr); |
446 | if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */ | |
0f85fab0 LW |
447 | if (littlelen > bigend - big) |
448 | return Nullch; | |
463ee0b2 | 449 | little = (unsigned char*)SvPVX(littlestr); |
79072805 | 450 | if (SvCASEFOLD(littlestr)) { /* oops, fake it */ |
a687059c LW |
451 | big = bigend - littlelen; /* just start near end */ |
452 | if (bigend[-1] == '\n' && little[littlelen-1] != '\n') | |
453 | big--; | |
378cc40b LW |
454 | } |
455 | else { | |
a687059c | 456 | s = bigend - littlelen; |
1aef975c | 457 | if (*s == *little && bcmp((char*)s,(char*)little,littlelen)==0) |
a687059c | 458 | return (char*)s; /* how sweet it is */ |
34de22dd LW |
459 | else if (bigend[-1] == '\n' && little[littlelen-1] != '\n' |
460 | && s > big) { | |
a687059c | 461 | s--; |
1aef975c | 462 | if (*s == *little && bcmp((char*)s,(char*)little,littlelen)==0) |
a687059c LW |
463 | return (char*)s; |
464 | } | |
465 | return Nullch; | |
466 | } | |
467 | } | |
463ee0b2 | 468 | table = (unsigned char*)(SvPVX(littlestr) + littlelen + 1); |
62b28dd9 LW |
469 | if (--littlelen >= bigend - big) |
470 | return Nullch; | |
471 | s = big + littlelen; | |
a687059c | 472 | oldlittle = little = table - 2; |
79072805 | 473 | if (SvCASEFOLD(littlestr)) { /* case insensitive? */ |
20188a90 | 474 | if (s < bigend) { |
a687059c | 475 | top1: |
de3bb511 | 476 | /*SUPPRESS 560*/ |
a687059c | 477 | if (tmp = table[*s]) { |
62b28dd9 LW |
478 | #ifdef POINTERRIGOR |
479 | if (bigend - s > tmp) { | |
480 | s += tmp; | |
481 | goto top1; | |
482 | } | |
483 | #else | |
484 | if ((s += tmp) < bigend) | |
485 | goto top1; | |
486 | #endif | |
487 | return Nullch; | |
a687059c LW |
488 | } |
489 | else { | |
490 | tmp = littlelen; /* less expensive than calling strncmp() */ | |
491 | olds = s; | |
492 | while (tmp--) { | |
493 | if (*--s == *--little || fold[*s] == *little) | |
494 | continue; | |
495 | s = olds + 1; /* here we pay the price for failure */ | |
496 | little = oldlittle; | |
497 | if (s < bigend) /* fake up continue to outer loop */ | |
498 | goto top1; | |
499 | return Nullch; | |
500 | } | |
a687059c | 501 | return (char *)s; |
a687059c LW |
502 | } |
503 | } | |
504 | } | |
505 | else { | |
20188a90 | 506 | if (s < bigend) { |
a687059c | 507 | top2: |
de3bb511 | 508 | /*SUPPRESS 560*/ |
a687059c | 509 | if (tmp = table[*s]) { |
62b28dd9 LW |
510 | #ifdef POINTERRIGOR |
511 | if (bigend - s > tmp) { | |
512 | s += tmp; | |
513 | goto top2; | |
514 | } | |
515 | #else | |
516 | if ((s += tmp) < bigend) | |
517 | goto top2; | |
518 | #endif | |
519 | return Nullch; | |
a687059c LW |
520 | } |
521 | else { | |
522 | tmp = littlelen; /* less expensive than calling strncmp() */ | |
523 | olds = s; | |
524 | while (tmp--) { | |
525 | if (*--s == *--little) | |
526 | continue; | |
527 | s = olds + 1; /* here we pay the price for failure */ | |
528 | little = oldlittle; | |
529 | if (s < bigend) /* fake up continue to outer loop */ | |
530 | goto top2; | |
531 | return Nullch; | |
532 | } | |
a687059c | 533 | return (char *)s; |
378cc40b | 534 | } |
378cc40b LW |
535 | } |
536 | } | |
537 | return Nullch; | |
538 | } | |
539 | ||
540 | char * | |
541 | screaminstr(bigstr, littlestr) | |
79072805 LW |
542 | SV *bigstr; |
543 | SV *littlestr; | |
378cc40b | 544 | { |
a687059c LW |
545 | register unsigned char *s, *x; |
546 | register unsigned char *big; | |
79072805 LW |
547 | register I32 pos; |
548 | register I32 previous; | |
549 | register I32 first; | |
a687059c LW |
550 | register unsigned char *little; |
551 | register unsigned char *bigend; | |
552 | register unsigned char *littleend; | |
378cc40b | 553 | |
79072805 | 554 | if ((pos = screamfirst[BmRARE(littlestr)]) < 0) |
378cc40b | 555 | return Nullch; |
463ee0b2 | 556 | little = (unsigned char *)(SvPVX(littlestr)); |
79072805 | 557 | littleend = little + SvCUR(littlestr); |
378cc40b | 558 | first = *little++; |
79072805 | 559 | previous = BmPREVIOUS(littlestr); |
463ee0b2 | 560 | big = (unsigned char *)(SvPVX(bigstr)); |
79072805 | 561 | bigend = big + SvCUR(bigstr); |
378cc40b LW |
562 | while (pos < previous) { |
563 | if (!(pos += screamnext[pos])) | |
564 | return Nullch; | |
565 | } | |
de3bb511 | 566 | #ifdef POINTERRIGOR |
79072805 | 567 | if (SvCASEFOLD(littlestr)) { /* case insignificant? */ |
a687059c | 568 | do { |
988174c1 LW |
569 | if (big[pos-previous] != first && big[pos-previous] != fold[first]) |
570 | continue; | |
de3bb511 LW |
571 | for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) { |
572 | if (x >= bigend) | |
573 | return Nullch; | |
574 | if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) { | |
575 | s--; | |
576 | break; | |
577 | } | |
578 | } | |
579 | if (s == littleend) | |
de3bb511 | 580 | return (char *)(big+pos-previous); |
de3bb511 | 581 | } while ( |
de3bb511 | 582 | pos += screamnext[pos] /* does this goof up anywhere? */ |
de3bb511 LW |
583 | ); |
584 | } | |
585 | else { | |
586 | do { | |
988174c1 LW |
587 | if (big[pos-previous] != first) |
588 | continue; | |
de3bb511 LW |
589 | for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) { |
590 | if (x >= bigend) | |
591 | return Nullch; | |
592 | if (*s++ != *x++) { | |
593 | s--; | |
594 | break; | |
595 | } | |
596 | } | |
597 | if (s == littleend) | |
de3bb511 | 598 | return (char *)(big+pos-previous); |
79072805 | 599 | } while ( pos += screamnext[pos] ); |
de3bb511 LW |
600 | } |
601 | #else /* !POINTERRIGOR */ | |
602 | big -= previous; | |
79072805 | 603 | if (SvCASEFOLD(littlestr)) { /* case insignificant? */ |
de3bb511 | 604 | do { |
988174c1 LW |
605 | if (big[pos] != first && big[pos] != fold[first]) |
606 | continue; | |
a687059c LW |
607 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { |
608 | if (x >= bigend) | |
609 | return Nullch; | |
610 | if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) { | |
611 | s--; | |
612 | break; | |
613 | } | |
614 | } | |
615 | if (s == littleend) | |
a687059c | 616 | return (char *)(big+pos); |
a687059c | 617 | } while ( |
a687059c | 618 | pos += screamnext[pos] /* does this goof up anywhere? */ |
a687059c LW |
619 | ); |
620 | } | |
621 | else { | |
622 | do { | |
988174c1 LW |
623 | if (big[pos] != first) |
624 | continue; | |
a687059c LW |
625 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { |
626 | if (x >= bigend) | |
627 | return Nullch; | |
628 | if (*s++ != *x++) { | |
629 | s--; | |
630 | break; | |
631 | } | |
378cc40b | 632 | } |
a687059c | 633 | if (s == littleend) |
a687059c | 634 | return (char *)(big+pos); |
a687059c | 635 | } while ( |
a687059c | 636 | pos += screamnext[pos] |
a687059c LW |
637 | ); |
638 | } | |
de3bb511 | 639 | #endif /* POINTERRIGOR */ |
8d063cd8 LW |
640 | return Nullch; |
641 | } | |
642 | ||
79072805 LW |
643 | I32 |
644 | ibcmp(a,b,len) | |
a0d0e21e LW |
645 | register U8 *a; |
646 | register U8 *b; | |
79072805 LW |
647 | register I32 len; |
648 | { | |
649 | while (len--) { | |
650 | if (*a == *b) { | |
651 | a++,b++; | |
652 | continue; | |
653 | } | |
654 | if (fold[*a++] == *b++) | |
655 | continue; | |
656 | return 1; | |
657 | } | |
658 | return 0; | |
659 | } | |
660 | ||
8d063cd8 LW |
661 | /* copy a string to a safe spot */ |
662 | ||
663 | char * | |
a0d0e21e | 664 | savepv(sv) |
79072805 | 665 | char *sv; |
8d063cd8 | 666 | { |
a687059c | 667 | register char *newaddr; |
8d063cd8 | 668 | |
79072805 LW |
669 | New(902,newaddr,strlen(sv)+1,char); |
670 | (void)strcpy(newaddr,sv); | |
8d063cd8 LW |
671 | return newaddr; |
672 | } | |
673 | ||
a687059c LW |
674 | /* same thing but with a known length */ |
675 | ||
676 | char * | |
a0d0e21e | 677 | savepvn(sv, len) |
79072805 LW |
678 | char *sv; |
679 | register I32 len; | |
a687059c LW |
680 | { |
681 | register char *newaddr; | |
682 | ||
683 | New(903,newaddr,len+1,char); | |
79072805 | 684 | Copy(sv,newaddr,len,char); /* might not be null terminated */ |
a687059c LW |
685 | newaddr[len] = '\0'; /* is now */ |
686 | return newaddr; | |
687 | } | |
688 | ||
a0d0e21e | 689 | #if !defined(I_STDARG) && !defined(I_VARARGS) |
8d063cd8 | 690 | |
8990e307 LW |
691 | /* |
692 | * Fallback on the old hackers way of doing varargs | |
693 | */ | |
8d063cd8 | 694 | |
378cc40b | 695 | /*VARARGS1*/ |
7c0587c8 | 696 | char * |
378cc40b LW |
697 | mess(pat,a1,a2,a3,a4) |
698 | char *pat; | |
a687059c | 699 | long a1, a2, a3, a4; |
378cc40b LW |
700 | { |
701 | char *s; | |
79072805 LW |
702 | I32 usermess = strEQ(pat,"%s"); |
703 | SV *tmpstr; | |
378cc40b | 704 | |
a687059c | 705 | s = buf; |
de3bb511 | 706 | if (usermess) { |
8990e307 | 707 | tmpstr = sv_newmortal(); |
79072805 | 708 | sv_setpv(tmpstr, (char*)a1); |
463ee0b2 | 709 | *s++ = SvPVX(tmpstr)[SvCUR(tmpstr)-1]; |
de3bb511 LW |
710 | } |
711 | else { | |
712 | (void)sprintf(s,pat,a1,a2,a3,a4); | |
713 | s += strlen(s); | |
714 | } | |
715 | ||
378cc40b | 716 | if (s[-1] != '\n') { |
2304df62 AD |
717 | if (dirty) |
718 | strcpy(s, " during global destruction.\n"); | |
719 | else { | |
720 | if (curcop->cop_line) { | |
721 | (void)sprintf(s," at %s line %ld", | |
722 | SvPVX(GvSV(curcop->cop_filegv)), (long)curcop->cop_line); | |
723 | s += strlen(s); | |
724 | } | |
a0d0e21e LW |
725 | if (GvIO(last_in_gv) && |
726 | IoLINES(GvIOp(last_in_gv)) ) { | |
2304df62 AD |
727 | (void)sprintf(s,", <%s> %s %ld", |
728 | last_in_gv == argvgv ? "" : GvENAME(last_in_gv), | |
729 | strEQ(rs,"\n") ? "line" : "chunk", | |
a0d0e21e | 730 | (long)IoLINES(GvIOp(last_in_gv))); |
2304df62 AD |
731 | s += strlen(s); |
732 | } | |
733 | (void)strcpy(s,".\n"); | |
378cc40b | 734 | } |
de3bb511 | 735 | if (usermess) |
79072805 | 736 | sv_catpv(tmpstr,buf+1); |
378cc40b | 737 | } |
de3bb511 | 738 | if (usermess) |
463ee0b2 | 739 | return SvPVX(tmpstr); |
de3bb511 LW |
740 | else |
741 | return buf; | |
378cc40b LW |
742 | } |
743 | ||
8d063cd8 | 744 | /*VARARGS1*/ |
463ee0b2 | 745 | void croak(pat,a1,a2,a3,a4) |
8d063cd8 | 746 | char *pat; |
a687059c | 747 | long a1, a2, a3, a4; |
8d063cd8 | 748 | { |
9f68db38 | 749 | char *tmps; |
de3bb511 | 750 | char *message; |
748a9306 LW |
751 | HV *stash; |
752 | GV *gv; | |
753 | CV *cv; | |
8d063cd8 | 754 | |
de3bb511 | 755 | message = mess(pat,a1,a2,a3,a4); |
748a9306 LW |
756 | if (diehook && (cv = sv_2cv(diehook, &stash, &gv, 0)) && !CvDEPTH(cv)) { |
757 | dSP; | |
758 | ||
759 | PUSHMARK(sp); | |
760 | EXTEND(sp, 1); | |
761 | PUSHs(sv_2mortal(newSVpv(message,0))); | |
762 | PUTBACK; | |
763 | perl_call_sv((SV*)cv, G_DISCARD); | |
764 | } | |
a0d0e21e LW |
765 | if (in_eval) { |
766 | restartop = die_where(message); | |
767 | longjmp(top_env, 3); | |
768 | } | |
de3bb511 | 769 | fputs(message,stderr); |
a687059c | 770 | (void)fflush(stderr); |
8d063cd8 | 771 | if (e_fp) |
a687059c | 772 | (void)UNLINK(e_tmpname); |
748a9306 LW |
773 | statusvalue = SHIFTSTATUS(statusvalue); |
774 | #ifdef VMS | |
775 | my_exit((U32)vaxc$errno?vaxc$errno:errno?errno:statusvalue?statusvalue:SS$_ABORT); | |
776 | #else | |
777 | my_exit((U32)((errno&255)?errno:((statusvalue&255)?statusvalue:255))); | |
778 | #endif | |
378cc40b LW |
779 | } |
780 | ||
781 | /*VARARGS1*/ | |
7c0587c8 | 782 | void warn(pat,a1,a2,a3,a4) |
378cc40b | 783 | char *pat; |
a687059c | 784 | long a1, a2, a3, a4; |
378cc40b | 785 | { |
de3bb511 | 786 | char *message; |
748a9306 LW |
787 | SV *sv; |
788 | HV *stash; | |
789 | GV *gv; | |
790 | CV *cv; | |
de3bb511 LW |
791 | |
792 | message = mess(pat,a1,a2,a3,a4); | |
748a9306 LW |
793 | if (warnhook && (cv = sv_2cv(warnhook, &stash, &gv, 0)) && !CvDEPTH(cv)) { |
794 | dSP; | |
795 | ||
796 | PUSHMARK(sp); | |
797 | EXTEND(sp, 1); | |
798 | PUSHs(sv_2mortal(newSVpv(message,0))); | |
799 | PUTBACK; | |
800 | perl_call_sv((SV*)cv, G_DISCARD); | |
801 | } | |
802 | else { | |
803 | fputs(message,stderr); | |
a687059c | 804 | #ifdef LEAKTEST |
748a9306 | 805 | DEBUG_L(xstat()); |
a687059c | 806 | #endif |
748a9306 LW |
807 | (void)fflush(stderr); |
808 | } | |
8d063cd8 | 809 | } |
8990e307 | 810 | |
a0d0e21e | 811 | #else /* !defined(I_STDARG) && !defined(I_VARARGS) */ |
8990e307 | 812 | |
a0d0e21e | 813 | #ifdef I_STDARG |
8990e307 | 814 | char * |
2304df62 | 815 | mess(char *pat, va_list *args) |
a687059c LW |
816 | #else |
817 | /*VARARGS0*/ | |
de3bb511 | 818 | char * |
8990e307 | 819 | mess(pat, args) |
a687059c | 820 | char *pat; |
2304df62 | 821 | va_list *args; |
8990e307 LW |
822 | #endif |
823 | { | |
a687059c | 824 | char *s; |
79072805 LW |
825 | SV *tmpstr; |
826 | I32 usermess; | |
d48672a2 | 827 | #ifndef HAS_VPRINTF |
85e6fe83 | 828 | #ifdef USE_CHAR_VSPRINTF |
a687059c LW |
829 | char *vsprintf(); |
830 | #else | |
79072805 | 831 | I32 vsprintf(); |
a687059c | 832 | #endif |
d48672a2 | 833 | #endif |
a687059c | 834 | |
de3bb511 LW |
835 | s = buf; |
836 | usermess = strEQ(pat, "%s"); | |
837 | if (usermess) { | |
8990e307 | 838 | tmpstr = sv_newmortal(); |
2304df62 | 839 | sv_setpv(tmpstr, va_arg(*args, char *)); |
463ee0b2 | 840 | *s++ = SvPVX(tmpstr)[SvCUR(tmpstr)-1]; |
de3bb511 LW |
841 | } |
842 | else { | |
2304df62 | 843 | (void) vsprintf(s,pat,*args); |
de3bb511 LW |
844 | s += strlen(s); |
845 | } | |
2304df62 | 846 | va_end(*args); |
a687059c | 847 | |
a687059c | 848 | if (s[-1] != '\n') { |
2304df62 AD |
849 | if (dirty) |
850 | strcpy(s, " during global destruction.\n"); | |
851 | else { | |
852 | if (curcop->cop_line) { | |
853 | (void)sprintf(s," at %s line %ld", | |
854 | SvPVX(GvSV(curcop->cop_filegv)), (long)curcop->cop_line); | |
855 | s += strlen(s); | |
856 | } | |
a0d0e21e LW |
857 | if (GvIO(last_in_gv) && |
858 | IoLINES(GvIOp(last_in_gv)) ) { | |
2304df62 AD |
859 | (void)sprintf(s,", <%s> %s %ld", |
860 | last_in_gv == argvgv ? "" : GvNAME(last_in_gv), | |
861 | strEQ(rs,"\n") ? "line" : "chunk", | |
a0d0e21e | 862 | (long)IoLINES(GvIOp(last_in_gv))); |
2304df62 AD |
863 | s += strlen(s); |
864 | } | |
865 | (void)strcpy(s,".\n"); | |
a687059c | 866 | } |
de3bb511 | 867 | if (usermess) |
79072805 | 868 | sv_catpv(tmpstr,buf+1); |
a687059c | 869 | } |
de3bb511 LW |
870 | |
871 | if (usermess) | |
463ee0b2 | 872 | return SvPVX(tmpstr); |
de3bb511 LW |
873 | else |
874 | return buf; | |
a687059c LW |
875 | } |
876 | ||
ecfc5424 | 877 | #ifdef I_STDARG |
79072805 | 878 | void |
8990e307 | 879 | croak(char* pat, ...) |
463ee0b2 | 880 | #else |
8990e307 LW |
881 | /*VARARGS0*/ |
882 | void | |
883 | croak(pat, va_alist) | |
884 | char *pat; | |
885 | va_dcl | |
463ee0b2 | 886 | #endif |
a687059c LW |
887 | { |
888 | va_list args; | |
de3bb511 | 889 | char *message; |
748a9306 LW |
890 | HV *stash; |
891 | GV *gv; | |
892 | CV *cv; | |
a687059c | 893 | |
a0d0e21e | 894 | #ifdef I_STDARG |
8990e307 LW |
895 | va_start(args, pat); |
896 | #else | |
a687059c | 897 | va_start(args); |
8990e307 | 898 | #endif |
2304df62 | 899 | message = mess(pat, &args); |
a687059c | 900 | va_end(args); |
748a9306 LW |
901 | if (diehook && (cv = sv_2cv(diehook, &stash, &gv, 0)) && !CvDEPTH(cv)) { |
902 | dSP; | |
903 | ||
904 | PUSHMARK(sp); | |
905 | EXTEND(sp, 1); | |
906 | PUSHs(sv_2mortal(newSVpv(message,0))); | |
907 | PUTBACK; | |
908 | perl_call_sv((SV*)cv, G_DISCARD); | |
909 | } | |
a0d0e21e LW |
910 | if (in_eval) { |
911 | restartop = die_where(message); | |
79072805 | 912 | longjmp(top_env, 3); |
a0d0e21e | 913 | } |
de3bb511 | 914 | fputs(message,stderr); |
a687059c LW |
915 | (void)fflush(stderr); |
916 | if (e_fp) | |
917 | (void)UNLINK(e_tmpname); | |
748a9306 LW |
918 | statusvalue = SHIFTSTATUS(statusvalue); |
919 | #ifdef VMS | |
920 | my_exit((U32)(vaxc$errno?vaxc$errno:(statusvalue?statusvalue:44))); | |
921 | #else | |
922 | my_exit((U32)((errno&255)?errno:((statusvalue&255)?statusvalue:255))); | |
923 | #endif | |
a687059c LW |
924 | } |
925 | ||
8990e307 | 926 | void |
ecfc5424 | 927 | #ifdef I_STDARG |
8990e307 | 928 | warn(char* pat,...) |
463ee0b2 | 929 | #else |
8990e307 LW |
930 | /*VARARGS0*/ |
931 | warn(pat,va_alist) | |
932 | char *pat; | |
933 | va_dcl | |
463ee0b2 | 934 | #endif |
a687059c LW |
935 | { |
936 | va_list args; | |
de3bb511 | 937 | char *message; |
748a9306 LW |
938 | HV *stash; |
939 | GV *gv; | |
940 | CV *cv; | |
a687059c | 941 | |
a0d0e21e | 942 | #ifdef I_STDARG |
8990e307 LW |
943 | va_start(args, pat); |
944 | #else | |
a687059c | 945 | va_start(args); |
8990e307 | 946 | #endif |
2304df62 | 947 | message = mess(pat, &args); |
a687059c LW |
948 | va_end(args); |
949 | ||
748a9306 LW |
950 | if (warnhook && (cv = sv_2cv(warnhook, &stash, &gv, 0)) && !CvDEPTH(cv)) { |
951 | dSP; | |
952 | ||
953 | PUSHMARK(sp); | |
954 | EXTEND(sp, 1); | |
955 | PUSHs(sv_2mortal(newSVpv(message,0))); | |
956 | PUTBACK; | |
957 | perl_call_sv((SV*)cv, G_DISCARD); | |
958 | } | |
959 | else { | |
960 | fputs(message,stderr); | |
a687059c | 961 | #ifdef LEAKTEST |
748a9306 | 962 | DEBUG_L(xstat()); |
a687059c | 963 | #endif |
748a9306 LW |
964 | (void)fflush(stderr); |
965 | } | |
a687059c | 966 | } |
a0d0e21e | 967 | #endif /* !defined(I_STDARG) && !defined(I_VARARGS) */ |
8d063cd8 | 968 | |
a0d0e21e | 969 | #ifndef VMS /* VMS' my_setenv() is in VMS.c */ |
8d063cd8 | 970 | void |
7c0587c8 | 971 | my_setenv(nam,val) |
8d063cd8 LW |
972 | char *nam, *val; |
973 | { | |
79072805 | 974 | register I32 i=setenv_getix(nam); /* where does it go? */ |
8d063cd8 | 975 | |
fe14fcc3 | 976 | if (environ == origenviron) { /* need we copy environment? */ |
79072805 LW |
977 | I32 j; |
978 | I32 max; | |
fe14fcc3 LW |
979 | char **tmpenv; |
980 | ||
de3bb511 | 981 | /*SUPPRESS 530*/ |
fe14fcc3 LW |
982 | for (max = i; environ[max]; max++) ; |
983 | New(901,tmpenv, max+2, char*); | |
984 | for (j=0; j<max; j++) /* copy environment */ | |
a0d0e21e | 985 | tmpenv[j] = savepv(environ[j]); |
fe14fcc3 LW |
986 | tmpenv[max] = Nullch; |
987 | environ = tmpenv; /* tell exec where it is now */ | |
988 | } | |
a687059c LW |
989 | if (!val) { |
990 | while (environ[i]) { | |
991 | environ[i] = environ[i+1]; | |
992 | i++; | |
993 | } | |
994 | return; | |
995 | } | |
8d063cd8 | 996 | if (!environ[i]) { /* does not exist yet */ |
fe14fcc3 | 997 | Renew(environ, i+2, char*); /* just expand it a bit */ |
8d063cd8 LW |
998 | environ[i+1] = Nullch; /* make sure it's null terminated */ |
999 | } | |
fe14fcc3 LW |
1000 | else |
1001 | Safefree(environ[i]); | |
a687059c | 1002 | New(904, environ[i], strlen(nam) + strlen(val) + 2, char); |
62b28dd9 | 1003 | #ifndef MSDOS |
a687059c | 1004 | (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */ |
62b28dd9 LW |
1005 | #else |
1006 | /* MS-DOS requires environment variable names to be in uppercase */ | |
fe14fcc3 LW |
1007 | /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but |
1008 | * some utilities and applications may break because they only look | |
1009 | * for upper case strings. (Fixed strupr() bug here.)] | |
1010 | */ | |
1011 | strcpy(environ[i],nam); strupr(environ[i]); | |
62b28dd9 LW |
1012 | (void)sprintf(environ[i] + strlen(nam),"=%s",val); |
1013 | #endif /* MSDOS */ | |
8d063cd8 LW |
1014 | } |
1015 | ||
79072805 LW |
1016 | I32 |
1017 | setenv_getix(nam) | |
8d063cd8 LW |
1018 | char *nam; |
1019 | { | |
79072805 | 1020 | register I32 i, len = strlen(nam); |
8d063cd8 LW |
1021 | |
1022 | for (i = 0; environ[i]; i++) { | |
1023 | if (strnEQ(environ[i],nam,len) && environ[i][len] == '=') | |
1024 | break; /* strnEQ must come first to avoid */ | |
1025 | } /* potential SEGV's */ | |
1026 | return i; | |
1027 | } | |
a0d0e21e | 1028 | #endif /* !VMS */ |
378cc40b LW |
1029 | |
1030 | #ifdef EUNICE | |
79072805 | 1031 | I32 |
378cc40b LW |
1032 | unlnk(f) /* unlink all versions of a file */ |
1033 | char *f; | |
1034 | { | |
79072805 | 1035 | I32 i; |
378cc40b LW |
1036 | |
1037 | for (i = 0; unlink(f) >= 0; i++) ; | |
1038 | return i ? 0 : -1; | |
1039 | } | |
1040 | #endif | |
1041 | ||
85e6fe83 | 1042 | #if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY) |
378cc40b | 1043 | char * |
7c0587c8 | 1044 | my_bcopy(from,to,len) |
378cc40b LW |
1045 | register char *from; |
1046 | register char *to; | |
79072805 | 1047 | register I32 len; |
378cc40b LW |
1048 | { |
1049 | char *retval = to; | |
1050 | ||
7c0587c8 LW |
1051 | if (from - to >= 0) { |
1052 | while (len--) | |
1053 | *to++ = *from++; | |
1054 | } | |
1055 | else { | |
1056 | to += len; | |
1057 | from += len; | |
1058 | while (len--) | |
faf8582f | 1059 | *(--to) = *(--from); |
7c0587c8 | 1060 | } |
378cc40b LW |
1061 | return retval; |
1062 | } | |
ffed7fef | 1063 | #endif |
378cc40b | 1064 | |
7c0587c8 | 1065 | #if !defined(HAS_BZERO) && !defined(HAS_MEMSET) |
378cc40b | 1066 | char * |
7c0587c8 | 1067 | my_bzero(loc,len) |
378cc40b | 1068 | register char *loc; |
79072805 | 1069 | register I32 len; |
378cc40b LW |
1070 | { |
1071 | char *retval = loc; | |
1072 | ||
1073 | while (len--) | |
1074 | *loc++ = 0; | |
1075 | return retval; | |
1076 | } | |
1077 | #endif | |
7c0587c8 LW |
1078 | |
1079 | #ifndef HAS_MEMCMP | |
79072805 | 1080 | I32 |
7c0587c8 LW |
1081 | my_memcmp(s1,s2,len) |
1082 | register unsigned char *s1; | |
1083 | register unsigned char *s2; | |
79072805 | 1084 | register I32 len; |
7c0587c8 | 1085 | { |
79072805 | 1086 | register I32 tmp; |
7c0587c8 LW |
1087 | |
1088 | while (len--) { | |
1089 | if (tmp = *s1++ - *s2++) | |
1090 | return tmp; | |
1091 | } | |
1092 | return 0; | |
1093 | } | |
1094 | #endif /* HAS_MEMCMP */ | |
a687059c | 1095 | |
35c8bce7 | 1096 | #ifdef I_VARARGS |
fe14fcc3 | 1097 | #ifndef HAS_VPRINTF |
a687059c | 1098 | |
85e6fe83 | 1099 | #ifdef USE_CHAR_VSPRINTF |
a687059c LW |
1100 | char * |
1101 | #else | |
1102 | int | |
1103 | #endif | |
1104 | vsprintf(dest, pat, args) | |
1105 | char *dest, *pat, *args; | |
1106 | { | |
1107 | FILE fakebuf; | |
1108 | ||
1109 | fakebuf._ptr = dest; | |
1110 | fakebuf._cnt = 32767; | |
35c8bce7 LW |
1111 | #ifndef _IOSTRG |
1112 | #define _IOSTRG 0 | |
1113 | #endif | |
a687059c LW |
1114 | fakebuf._flag = _IOWRT|_IOSTRG; |
1115 | _doprnt(pat, args, &fakebuf); /* what a kludge */ | |
1116 | (void)putc('\0', &fakebuf); | |
85e6fe83 | 1117 | #ifdef USE_CHAR_VSPRINTF |
a687059c LW |
1118 | return(dest); |
1119 | #else | |
1120 | return 0; /* perl doesn't use return value */ | |
1121 | #endif | |
1122 | } | |
1123 | ||
a687059c LW |
1124 | int |
1125 | vfprintf(fd, pat, args) | |
1126 | FILE *fd; | |
1127 | char *pat, *args; | |
1128 | { | |
1129 | _doprnt(pat, args, fd); | |
1130 | return 0; /* wrong, but perl doesn't use the return value */ | |
1131 | } | |
fe14fcc3 | 1132 | #endif /* HAS_VPRINTF */ |
35c8bce7 | 1133 | #endif /* I_VARARGS */ |
a687059c LW |
1134 | |
1135 | #ifdef MYSWAP | |
ffed7fef | 1136 | #if BYTEORDER != 0x4321 |
a687059c | 1137 | short |
748a9306 | 1138 | #ifndef CAN_PROTOTYPE |
a687059c LW |
1139 | my_swap(s) |
1140 | short s; | |
748a9306 LW |
1141 | #else |
1142 | my_swap(short s) | |
1143 | #endif | |
a687059c LW |
1144 | { |
1145 | #if (BYTEORDER & 1) == 0 | |
1146 | short result; | |
1147 | ||
1148 | result = ((s & 255) << 8) + ((s >> 8) & 255); | |
1149 | return result; | |
1150 | #else | |
1151 | return s; | |
1152 | #endif | |
1153 | } | |
1154 | ||
1155 | long | |
748a9306 LW |
1156 | #ifndef CAN_PROTOTYPE |
1157 | my_htonl(l) | |
a687059c | 1158 | register long l; |
748a9306 LW |
1159 | #else |
1160 | my_htonl(long l) | |
1161 | #endif | |
a687059c LW |
1162 | { |
1163 | union { | |
1164 | long result; | |
ffed7fef | 1165 | char c[sizeof(long)]; |
a687059c LW |
1166 | } u; |
1167 | ||
ffed7fef | 1168 | #if BYTEORDER == 0x1234 |
a687059c LW |
1169 | u.c[0] = (l >> 24) & 255; |
1170 | u.c[1] = (l >> 16) & 255; | |
1171 | u.c[2] = (l >> 8) & 255; | |
1172 | u.c[3] = l & 255; | |
1173 | return u.result; | |
1174 | #else | |
ffed7fef | 1175 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
463ee0b2 | 1176 | croak("Unknown BYTEORDER\n"); |
a687059c | 1177 | #else |
79072805 LW |
1178 | register I32 o; |
1179 | register I32 s; | |
a687059c | 1180 | |
ffed7fef LW |
1181 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1182 | u.c[o & 0xf] = (l >> s) & 255; | |
a687059c LW |
1183 | } |
1184 | return u.result; | |
1185 | #endif | |
1186 | #endif | |
1187 | } | |
1188 | ||
1189 | long | |
748a9306 LW |
1190 | #ifndef CAN_PROTOTYPE |
1191 | my_ntohl(l) | |
a687059c | 1192 | register long l; |
748a9306 LW |
1193 | #else |
1194 | my_ntohl(long l) | |
1195 | #endif | |
a687059c LW |
1196 | { |
1197 | union { | |
1198 | long l; | |
ffed7fef | 1199 | char c[sizeof(long)]; |
a687059c LW |
1200 | } u; |
1201 | ||
ffed7fef | 1202 | #if BYTEORDER == 0x1234 |
a687059c LW |
1203 | u.c[0] = (l >> 24) & 255; |
1204 | u.c[1] = (l >> 16) & 255; | |
1205 | u.c[2] = (l >> 8) & 255; | |
1206 | u.c[3] = l & 255; | |
1207 | return u.l; | |
1208 | #else | |
ffed7fef | 1209 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
463ee0b2 | 1210 | croak("Unknown BYTEORDER\n"); |
a687059c | 1211 | #else |
79072805 LW |
1212 | register I32 o; |
1213 | register I32 s; | |
a687059c LW |
1214 | |
1215 | u.l = l; | |
1216 | l = 0; | |
ffed7fef LW |
1217 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1218 | l |= (u.c[o & 0xf] & 255) << s; | |
a687059c LW |
1219 | } |
1220 | return l; | |
1221 | #endif | |
1222 | #endif | |
1223 | } | |
1224 | ||
ffed7fef | 1225 | #endif /* BYTEORDER != 0x4321 */ |
988174c1 LW |
1226 | #endif /* MYSWAP */ |
1227 | ||
1228 | /* | |
1229 | * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'. | |
1230 | * If these functions are defined, | |
1231 | * the BYTEORDER is neither 0x1234 nor 0x4321. | |
1232 | * However, this is not assumed. | |
1233 | * -DWS | |
1234 | */ | |
1235 | ||
1236 | #define HTOV(name,type) \ | |
1237 | type \ | |
1238 | name (n) \ | |
1239 | register type n; \ | |
1240 | { \ | |
1241 | union { \ | |
1242 | type value; \ | |
1243 | char c[sizeof(type)]; \ | |
1244 | } u; \ | |
79072805 LW |
1245 | register I32 i; \ |
1246 | register I32 s; \ | |
988174c1 LW |
1247 | for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \ |
1248 | u.c[i] = (n >> s) & 0xFF; \ | |
1249 | } \ | |
1250 | return u.value; \ | |
1251 | } | |
1252 | ||
1253 | #define VTOH(name,type) \ | |
1254 | type \ | |
1255 | name (n) \ | |
1256 | register type n; \ | |
1257 | { \ | |
1258 | union { \ | |
1259 | type value; \ | |
1260 | char c[sizeof(type)]; \ | |
1261 | } u; \ | |
79072805 LW |
1262 | register I32 i; \ |
1263 | register I32 s; \ | |
988174c1 LW |
1264 | u.value = n; \ |
1265 | n = 0; \ | |
1266 | for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \ | |
1267 | n += (u.c[i] & 0xFF) << s; \ | |
1268 | } \ | |
1269 | return n; \ | |
1270 | } | |
1271 | ||
1272 | #if defined(HAS_HTOVS) && !defined(htovs) | |
1273 | HTOV(htovs,short) | |
1274 | #endif | |
1275 | #if defined(HAS_HTOVL) && !defined(htovl) | |
1276 | HTOV(htovl,long) | |
1277 | #endif | |
1278 | #if defined(HAS_VTOHS) && !defined(vtohs) | |
1279 | VTOH(vtohs,short) | |
1280 | #endif | |
1281 | #if defined(HAS_VTOHL) && !defined(vtohl) | |
1282 | VTOH(vtohl,long) | |
1283 | #endif | |
a687059c | 1284 | |
a0d0e21e | 1285 | #if !defined(DOSISH) && !defined(VMS) /* VMS' my_popen() is in VMS.c */ |
a687059c | 1286 | FILE * |
79072805 | 1287 | my_popen(cmd,mode) |
a687059c LW |
1288 | char *cmd; |
1289 | char *mode; | |
1290 | { | |
1291 | int p[2]; | |
79072805 LW |
1292 | register I32 this, that; |
1293 | register I32 pid; | |
1294 | SV *sv; | |
1295 | I32 doexec = strNE(cmd,"-"); | |
a687059c LW |
1296 | |
1297 | if (pipe(p) < 0) | |
1298 | return Nullfp; | |
1299 | this = (*mode == 'w'); | |
1300 | that = !this; | |
463ee0b2 LW |
1301 | if (tainting) { |
1302 | if (doexec) { | |
1303 | taint_env(); | |
1304 | taint_proper("Insecure %s%s", "EXEC"); | |
1305 | } | |
d48672a2 | 1306 | } |
a687059c LW |
1307 | while ((pid = (doexec?vfork():fork())) < 0) { |
1308 | if (errno != EAGAIN) { | |
1309 | close(p[this]); | |
1310 | if (!doexec) | |
463ee0b2 | 1311 | croak("Can't fork"); |
a687059c LW |
1312 | return Nullfp; |
1313 | } | |
1314 | sleep(5); | |
1315 | } | |
1316 | if (pid == 0) { | |
79072805 LW |
1317 | GV* tmpgv; |
1318 | ||
a687059c LW |
1319 | #define THIS that |
1320 | #define THAT this | |
1321 | close(p[THAT]); | |
1322 | if (p[THIS] != (*mode == 'r')) { | |
1323 | dup2(p[THIS], *mode == 'r'); | |
1324 | close(p[THIS]); | |
1325 | } | |
1326 | if (doexec) { | |
a0d0e21e | 1327 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) |
ae986130 LW |
1328 | int fd; |
1329 | ||
1330 | #ifndef NOFILE | |
1331 | #define NOFILE 20 | |
1332 | #endif | |
d48672a2 | 1333 | for (fd = maxsysfd + 1; fd < NOFILE; fd++) |
ae986130 LW |
1334 | close(fd); |
1335 | #endif | |
a687059c LW |
1336 | do_exec(cmd); /* may or may not use the shell */ |
1337 | _exit(1); | |
1338 | } | |
de3bb511 | 1339 | /*SUPPRESS 560*/ |
85e6fe83 | 1340 | if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV)) |
79072805 | 1341 | sv_setiv(GvSV(tmpgv),(I32)getpid()); |
9f68db38 | 1342 | forkprocess = 0; |
463ee0b2 | 1343 | hv_clear(pidstatus); /* we have no children */ |
a687059c LW |
1344 | return Nullfp; |
1345 | #undef THIS | |
1346 | #undef THAT | |
1347 | } | |
62b28dd9 | 1348 | do_execfree(); /* free any memory malloced by child on vfork */ |
a687059c | 1349 | close(p[that]); |
62b28dd9 LW |
1350 | if (p[that] < p[this]) { |
1351 | dup2(p[this], p[that]); | |
1352 | close(p[this]); | |
1353 | p[this] = p[that]; | |
1354 | } | |
79072805 | 1355 | sv = *av_fetch(fdpid,p[this],TRUE); |
a0d0e21e | 1356 | (void)SvUPGRADE(sv,SVt_IV); |
463ee0b2 | 1357 | SvIVX(sv) = pid; |
a687059c LW |
1358 | forkprocess = pid; |
1359 | return fdopen(p[this], mode); | |
1360 | } | |
7c0587c8 LW |
1361 | #else |
1362 | #ifdef atarist | |
1363 | FILE *popen(); | |
1364 | FILE * | |
79072805 | 1365 | my_popen(cmd,mode) |
7c0587c8 LW |
1366 | char *cmd; |
1367 | char *mode; | |
1368 | { | |
1369 | return popen(cmd, mode); | |
1370 | } | |
1371 | #endif | |
1372 | ||
1373 | #endif /* !DOSISH */ | |
a687059c | 1374 | |
748a9306 | 1375 | #ifdef DUMP_FDS |
79072805 | 1376 | dump_fds(s) |
ae986130 LW |
1377 | char *s; |
1378 | { | |
1379 | int fd; | |
1380 | struct stat tmpstatbuf; | |
1381 | ||
1382 | fprintf(stderr,"%s", s); | |
1383 | for (fd = 0; fd < 32; fd++) { | |
a0d0e21e | 1384 | if (Fstat(fd,&tmpstatbuf) >= 0) |
ae986130 LW |
1385 | fprintf(stderr," %d",fd); |
1386 | } | |
1387 | fprintf(stderr,"\n"); | |
1388 | } | |
1389 | #endif | |
1390 | ||
fe14fcc3 | 1391 | #ifndef HAS_DUP2 |
fec02dd3 | 1392 | int |
a687059c LW |
1393 | dup2(oldfd,newfd) |
1394 | int oldfd; | |
1395 | int newfd; | |
1396 | { | |
a0d0e21e | 1397 | #if defined(HAS_FCNTL) && defined(F_DUPFD) |
fec02dd3 AD |
1398 | if (oldfd == newfd) |
1399 | return oldfd; | |
62b28dd9 | 1400 | close(newfd); |
fec02dd3 | 1401 | return fcntl(oldfd, F_DUPFD, newfd); |
62b28dd9 | 1402 | #else |
d48672a2 | 1403 | int fdtmp[256]; |
79072805 | 1404 | I32 fdx = 0; |
ae986130 LW |
1405 | int fd; |
1406 | ||
fe14fcc3 | 1407 | if (oldfd == newfd) |
fec02dd3 | 1408 | return oldfd; |
a687059c | 1409 | close(newfd); |
fec02dd3 | 1410 | while ((fd = dup(oldfd)) != newfd && fd >= 0) /* good enough for low fd's */ |
ae986130 LW |
1411 | fdtmp[fdx++] = fd; |
1412 | while (fdx > 0) | |
1413 | close(fdtmp[--fdx]); | |
fec02dd3 | 1414 | return fd; |
62b28dd9 | 1415 | #endif |
a687059c LW |
1416 | } |
1417 | #endif | |
1418 | ||
7c0587c8 | 1419 | #ifndef DOSISH |
a0d0e21e | 1420 | #ifndef VMS /* VMS' my_pclose() is in VMS.c */ |
79072805 LW |
1421 | I32 |
1422 | my_pclose(ptr) | |
a687059c LW |
1423 | FILE *ptr; |
1424 | { | |
ecfc5424 | 1425 | Signal_t (*hstat)(), (*istat)(), (*qstat)(); |
a687059c | 1426 | int status; |
a0d0e21e | 1427 | SV **svp; |
20188a90 | 1428 | int pid; |
a687059c | 1429 | |
a0d0e21e | 1430 | svp = av_fetch(fdpid,fileno(ptr),TRUE); |
748a9306 | 1431 | pid = (int)SvIVX(*svp); |
a0d0e21e LW |
1432 | SvREFCNT_dec(*svp); |
1433 | *svp = &sv_undef; | |
a687059c | 1434 | fclose(ptr); |
7c0587c8 LW |
1435 | #ifdef UTS |
1436 | if(kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */ | |
1437 | #endif | |
a687059c LW |
1438 | hstat = signal(SIGHUP, SIG_IGN); |
1439 | istat = signal(SIGINT, SIG_IGN); | |
1440 | qstat = signal(SIGQUIT, SIG_IGN); | |
748a9306 LW |
1441 | do { |
1442 | pid = wait4pid(pid, &status, 0); | |
1443 | } while (pid == -1 && errno == EINTR); | |
20188a90 LW |
1444 | signal(SIGHUP, hstat); |
1445 | signal(SIGINT, istat); | |
1446 | signal(SIGQUIT, qstat); | |
1447 | return(pid < 0 ? pid : status); | |
1448 | } | |
a0d0e21e | 1449 | #endif /* !VMS */ |
79072805 | 1450 | I32 |
20188a90 LW |
1451 | wait4pid(pid,statusp,flags) |
1452 | int pid; | |
1453 | int *statusp; | |
1454 | int flags; | |
1455 | { | |
79072805 LW |
1456 | SV *sv; |
1457 | SV** svp; | |
20188a90 LW |
1458 | char spid[16]; |
1459 | ||
1460 | if (!pid) | |
1461 | return -1; | |
20188a90 LW |
1462 | if (pid > 0) { |
1463 | sprintf(spid, "%d", pid); | |
79072805 LW |
1464 | svp = hv_fetch(pidstatus,spid,strlen(spid),FALSE); |
1465 | if (svp && *svp != &sv_undef) { | |
463ee0b2 | 1466 | *statusp = SvIVX(*svp); |
748a9306 | 1467 | (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD); |
20188a90 LW |
1468 | return pid; |
1469 | } | |
1470 | } | |
1471 | else { | |
79072805 | 1472 | HE *entry; |
20188a90 | 1473 | |
79072805 LW |
1474 | hv_iterinit(pidstatus); |
1475 | if (entry = hv_iternext(pidstatus)) { | |
a0d0e21e | 1476 | pid = atoi(hv_iterkey(entry,(I32*)statusp)); |
79072805 | 1477 | sv = hv_iterval(pidstatus,entry); |
463ee0b2 | 1478 | *statusp = SvIVX(sv); |
20188a90 | 1479 | sprintf(spid, "%d", pid); |
748a9306 | 1480 | (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD); |
20188a90 LW |
1481 | return pid; |
1482 | } | |
1483 | } | |
79072805 LW |
1484 | #ifdef HAS_WAITPID |
1485 | return waitpid(pid,statusp,flags); | |
1486 | #else | |
a0d0e21e LW |
1487 | #ifdef HAS_WAIT4 |
1488 | return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *)); | |
1489 | #else | |
1490 | { | |
1491 | I32 result; | |
1492 | if (flags) | |
1493 | croak("Can't do waitpid with flags"); | |
1494 | else { | |
1495 | while ((result = wait(statusp)) != pid && pid > 0 && result >= 0) | |
1496 | pidgone(result,*statusp); | |
1497 | if (result < 0) | |
1498 | *statusp = -1; | |
1499 | } | |
1500 | return result; | |
a687059c LW |
1501 | } |
1502 | #endif | |
20188a90 | 1503 | #endif |
a687059c | 1504 | } |
7c0587c8 | 1505 | #endif /* !DOSISH */ |
a687059c | 1506 | |
7c0587c8 | 1507 | void |
de3bb511 | 1508 | /*SUPPRESS 590*/ |
a687059c LW |
1509 | pidgone(pid,status) |
1510 | int pid; | |
1511 | int status; | |
1512 | { | |
79072805 | 1513 | register SV *sv; |
20188a90 | 1514 | char spid[16]; |
a687059c | 1515 | |
20188a90 | 1516 | sprintf(spid, "%d", pid); |
79072805 | 1517 | sv = *hv_fetch(pidstatus,spid,strlen(spid),TRUE); |
a0d0e21e | 1518 | (void)SvUPGRADE(sv,SVt_IV); |
463ee0b2 | 1519 | SvIVX(sv) = status; |
20188a90 | 1520 | return; |
a687059c LW |
1521 | } |
1522 | ||
7c0587c8 LW |
1523 | #ifdef atarist |
1524 | int pclose(); | |
79072805 LW |
1525 | I32 |
1526 | my_pclose(ptr) | |
7c0587c8 | 1527 | FILE *ptr; |
a687059c | 1528 | { |
7c0587c8 | 1529 | return pclose(ptr); |
a687059c | 1530 | } |
7c0587c8 | 1531 | #endif |
9f68db38 LW |
1532 | |
1533 | void | |
1534 | repeatcpy(to,from,len,count) | |
1535 | register char *to; | |
1536 | register char *from; | |
79072805 LW |
1537 | I32 len; |
1538 | register I32 count; | |
9f68db38 | 1539 | { |
79072805 | 1540 | register I32 todo; |
9f68db38 LW |
1541 | register char *frombase = from; |
1542 | ||
1543 | if (len == 1) { | |
1544 | todo = *from; | |
1545 | while (count-- > 0) | |
1546 | *to++ = todo; | |
1547 | return; | |
1548 | } | |
1549 | while (count-- > 0) { | |
1550 | for (todo = len; todo > 0; todo--) { | |
1551 | *to++ = *from++; | |
1552 | } | |
1553 | from = frombase; | |
1554 | } | |
1555 | } | |
0f85fab0 LW |
1556 | |
1557 | #ifndef CASTNEGFLOAT | |
463ee0b2 | 1558 | U32 |
79072805 | 1559 | cast_ulong(f) |
0f85fab0 LW |
1560 | double f; |
1561 | { | |
1562 | long along; | |
1563 | ||
27e2fb84 | 1564 | #if CASTFLAGS & 2 |
34de22dd LW |
1565 | # define BIGDOUBLE 2147483648.0 |
1566 | if (f >= BIGDOUBLE) | |
1567 | return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000; | |
1568 | #endif | |
0f85fab0 LW |
1569 | if (f >= 0.0) |
1570 | return (unsigned long)f; | |
1571 | along = (long)f; | |
1572 | return (unsigned long)along; | |
1573 | } | |
ed6116ce LW |
1574 | # undef BIGDOUBLE |
1575 | #endif | |
1576 | ||
1577 | #ifndef CASTI32 | |
1578 | I32 | |
1579 | cast_i32(f) | |
1580 | double f; | |
1581 | { | |
1582 | # define BIGDOUBLE 2147483648.0 /* Assume 32 bit int's ! */ | |
1583 | # define BIGNEGDOUBLE (-2147483648.0) | |
1584 | if (f >= BIGDOUBLE) | |
1585 | return (I32)fmod(f, BIGDOUBLE); | |
1586 | if (f <= BIGNEGDOUBLE) | |
1587 | return (I32)fmod(f, BIGNEGDOUBLE); | |
1588 | return (I32) f; | |
1589 | } | |
1590 | # undef BIGDOUBLE | |
1591 | # undef BIGNEGDOUBLE | |
a0d0e21e LW |
1592 | |
1593 | IV | |
1594 | cast_iv(f) | |
1595 | double f; | |
1596 | { | |
1597 | /* XXX This should be fixed. It assumes 32 bit IV's. */ | |
1598 | # define BIGDOUBLE 2147483648.0 /* Assume 32 bit IV's ! */ | |
1599 | # define BIGNEGDOUBLE (-2147483648.0) | |
1600 | if (f >= BIGDOUBLE) | |
1601 | return (IV)fmod(f, BIGDOUBLE); | |
1602 | if (f <= BIGNEGDOUBLE) | |
1603 | return (IV)fmod(f, BIGNEGDOUBLE); | |
1604 | return (IV) f; | |
1605 | } | |
1606 | # undef BIGDOUBLE | |
1607 | # undef BIGNEGDOUBLE | |
0f85fab0 | 1608 | #endif |
62b28dd9 | 1609 | |
fe14fcc3 | 1610 | #ifndef HAS_RENAME |
79072805 | 1611 | I32 |
62b28dd9 LW |
1612 | same_dirent(a,b) |
1613 | char *a; | |
1614 | char *b; | |
1615 | { | |
93a17b20 LW |
1616 | char *fa = strrchr(a,'/'); |
1617 | char *fb = strrchr(b,'/'); | |
62b28dd9 LW |
1618 | struct stat tmpstatbuf1; |
1619 | struct stat tmpstatbuf2; | |
1620 | #ifndef MAXPATHLEN | |
1621 | #define MAXPATHLEN 1024 | |
1622 | #endif | |
1623 | char tmpbuf[MAXPATHLEN+1]; | |
1624 | ||
1625 | if (fa) | |
1626 | fa++; | |
1627 | else | |
1628 | fa = a; | |
1629 | if (fb) | |
1630 | fb++; | |
1631 | else | |
1632 | fb = b; | |
1633 | if (strNE(a,b)) | |
1634 | return FALSE; | |
1635 | if (fa == a) | |
6eb13c3b | 1636 | strcpy(tmpbuf,"."); |
62b28dd9 LW |
1637 | else |
1638 | strncpy(tmpbuf, a, fa - a); | |
a0d0e21e | 1639 | if (Stat(tmpbuf, &tmpstatbuf1) < 0) |
62b28dd9 LW |
1640 | return FALSE; |
1641 | if (fb == b) | |
6eb13c3b | 1642 | strcpy(tmpbuf,"."); |
62b28dd9 LW |
1643 | else |
1644 | strncpy(tmpbuf, b, fb - b); | |
a0d0e21e | 1645 | if (Stat(tmpbuf, &tmpstatbuf2) < 0) |
62b28dd9 LW |
1646 | return FALSE; |
1647 | return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev && | |
1648 | tmpstatbuf1.st_ino == tmpstatbuf2.st_ino; | |
1649 | } | |
fe14fcc3 LW |
1650 | #endif /* !HAS_RENAME */ |
1651 | ||
1652 | unsigned long | |
79072805 | 1653 | scan_oct(start, len, retlen) |
fe14fcc3 | 1654 | char *start; |
79072805 LW |
1655 | I32 len; |
1656 | I32 *retlen; | |
fe14fcc3 LW |
1657 | { |
1658 | register char *s = start; | |
1659 | register unsigned long retval = 0; | |
1660 | ||
748a9306 | 1661 | while (len && *s >= '0' && *s <= '7') { |
fe14fcc3 LW |
1662 | retval <<= 3; |
1663 | retval |= *s++ - '0'; | |
748a9306 | 1664 | len--; |
fe14fcc3 | 1665 | } |
748a9306 LW |
1666 | if (dowarn && len && (*s == '8' || *s == '9')) |
1667 | warn("Illegal octal digit ignored"); | |
fe14fcc3 LW |
1668 | *retlen = s - start; |
1669 | return retval; | |
1670 | } | |
1671 | ||
1672 | unsigned long | |
79072805 | 1673 | scan_hex(start, len, retlen) |
fe14fcc3 | 1674 | char *start; |
79072805 LW |
1675 | I32 len; |
1676 | I32 *retlen; | |
fe14fcc3 LW |
1677 | { |
1678 | register char *s = start; | |
1679 | register unsigned long retval = 0; | |
1680 | char *tmp; | |
1681 | ||
93a17b20 | 1682 | while (len-- && *s && (tmp = strchr(hexdigit, *s))) { |
fe14fcc3 LW |
1683 | retval <<= 4; |
1684 | retval |= (tmp - hexdigit) & 15; | |
1685 | s++; | |
1686 | } | |
1687 | *retlen = s - start; | |
1688 | return retval; | |
1689 | } | |
ecfc5424 AD |
1690 | |
1691 | /* Amazingly enough, some systems (e.g. Dynix 3) don't have fmod. | |
1692 | This is a slow, stupid, but working emulation. (AD) | |
1693 | */ | |
1694 | #ifdef USE_MY_FMOD | |
1695 | double | |
1696 | my_fmod(x, y) | |
1697 | double x, y; | |
1698 | { | |
1699 | double i = 0.0; /* Can't use int because it can overflow */ | |
1700 | if ((x == 0) || (y == 0)) | |
1701 | return 0; | |
1702 | /* The sign of fmod is the same as the sign of x. */ | |
1703 | if ( (x < 0 && y > 0) || (x > 0 && y < 0) ) | |
1704 | y = -y; | |
1705 | if (x > 0) { | |
1706 | while (x - i*y > y) | |
1707 | i++; | |
1708 | } else { | |
1709 | while (x - i*y < y) | |
1710 | i++; | |
1711 | } | |
1712 | return x - i * y; | |
1713 | } | |
1714 | #endif |