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a6ec74c1 JH |
1 | /* pp_pack.c |
2 | * | |
4bb101f2 JH |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
4 | * 2000, 2001, 2002, 2003, by Larry Wall and others | |
a6ec74c1 JH |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
9 | */ | |
10 | ||
d31a8517 AT |
11 | /* |
12 | * He still hopefully carried some of his gear in his pack: a small tinder-box, | |
13 | * two small shallow pans, the smaller fitting into the larger; inside them a | |
14 | * wooden spoon, a short two-pronged fork and some skewers were stowed; and | |
15 | * hidden at the bottom of the pack in a flat wooden box a dwindling treasure, | |
16 | * some salt. | |
17 | */ | |
18 | ||
a6ec74c1 JH |
19 | #include "EXTERN.h" |
20 | #define PERL_IN_PP_PACK_C | |
21 | #include "perl.h" | |
22 | ||
23 | /* | |
24 | * The compiler on Concurrent CX/UX systems has a subtle bug which only | |
25 | * seems to show up when compiling pp.c - it generates the wrong double | |
26 | * precision constant value for (double)UV_MAX when used inline in the body | |
27 | * of the code below, so this makes a static variable up front (which the | |
28 | * compiler seems to get correct) and uses it in place of UV_MAX below. | |
29 | */ | |
30 | #ifdef CXUX_BROKEN_CONSTANT_CONVERT | |
31 | static double UV_MAX_cxux = ((double)UV_MAX); | |
32 | #endif | |
33 | ||
34 | /* | |
35 | * Offset for integer pack/unpack. | |
36 | * | |
37 | * On architectures where I16 and I32 aren't really 16 and 32 bits, | |
38 | * which for now are all Crays, pack and unpack have to play games. | |
39 | */ | |
40 | ||
41 | /* | |
42 | * These values are required for portability of pack() output. | |
43 | * If they're not right on your machine, then pack() and unpack() | |
44 | * wouldn't work right anyway; you'll need to apply the Cray hack. | |
45 | * (I'd like to check them with #if, but you can't use sizeof() in | |
46 | * the preprocessor.) --??? | |
47 | */ | |
48 | /* | |
49 | The appropriate SHORTSIZE, INTSIZE, LONGSIZE, and LONGLONGSIZE | |
50 | defines are now in config.h. --Andy Dougherty April 1998 | |
51 | */ | |
52 | #define SIZE16 2 | |
53 | #define SIZE32 4 | |
54 | ||
55 | /* CROSSCOMPILE and MULTIARCH are going to affect pp_pack() and pp_unpack(). | |
56 | --jhi Feb 1999 */ | |
57 | ||
58 | #if SHORTSIZE != SIZE16 || LONGSIZE != SIZE32 | |
59 | # define PERL_NATINT_PACK | |
60 | #endif | |
61 | ||
62 | #if LONGSIZE > 4 && defined(_CRAY) | |
63 | # if BYTEORDER == 0x12345678 | |
64 | # define OFF16(p) (char*)(p) | |
65 | # define OFF32(p) (char*)(p) | |
66 | # else | |
67 | # if BYTEORDER == 0x87654321 | |
68 | # define OFF16(p) ((char*)(p) + (sizeof(U16) - SIZE16)) | |
69 | # define OFF32(p) ((char*)(p) + (sizeof(U32) - SIZE32)) | |
70 | # else | |
71 | }}}} bad cray byte order | |
72 | # endif | |
73 | # endif | |
74 | # define COPY16(s,p) (*(p) = 0, Copy(s, OFF16(p), SIZE16, char)) | |
75 | # define COPY32(s,p) (*(p) = 0, Copy(s, OFF32(p), SIZE32, char)) | |
76 | # define COPYNN(s,p,n) (*(p) = 0, Copy(s, (char *)(p), n, char)) | |
77 | # define CAT16(sv,p) sv_catpvn(sv, OFF16(p), SIZE16) | |
78 | # define CAT32(sv,p) sv_catpvn(sv, OFF32(p), SIZE32) | |
79 | #else | |
80 | # define COPY16(s,p) Copy(s, p, SIZE16, char) | |
81 | # define COPY32(s,p) Copy(s, p, SIZE32, char) | |
82 | # define COPYNN(s,p,n) Copy(s, (char *)(p), n, char) | |
83 | # define CAT16(sv,p) sv_catpvn(sv, (char*)(p), SIZE16) | |
84 | # define CAT32(sv,p) sv_catpvn(sv, (char*)(p), SIZE32) | |
85 | #endif | |
86 | ||
49704364 WL |
87 | /* Avoid stack overflow due to pathological templates. 100 should be plenty. */ |
88 | #define MAX_SUB_TEMPLATE_LEVEL 100 | |
89 | ||
90 | /* flags */ | |
91 | #define FLAG_UNPACK_ONLY_ONE 0x10 | |
92 | #define FLAG_UNPACK_DO_UTF8 0x08 | |
93 | #define FLAG_SLASH 0x04 | |
94 | #define FLAG_COMMA 0x02 | |
95 | #define FLAG_PACK 0x01 | |
96 | ||
a6ec74c1 JH |
97 | STATIC SV * |
98 | S_mul128(pTHX_ SV *sv, U8 m) | |
99 | { | |
100 | STRLEN len; | |
101 | char *s = SvPV(sv, len); | |
102 | char *t; | |
103 | U32 i = 0; | |
104 | ||
105 | if (!strnEQ(s, "0000", 4)) { /* need to grow sv */ | |
106 | SV *tmpNew = newSVpvn("0000000000", 10); | |
107 | ||
108 | sv_catsv(tmpNew, sv); | |
109 | SvREFCNT_dec(sv); /* free old sv */ | |
110 | sv = tmpNew; | |
111 | s = SvPV(sv, len); | |
112 | } | |
113 | t = s + len - 1; | |
114 | while (!*t) /* trailing '\0'? */ | |
115 | t--; | |
116 | while (t > s) { | |
117 | i = ((*t - '0') << 7) + m; | |
eb160463 GS |
118 | *(t--) = '0' + (char)(i % 10); |
119 | m = (char)(i / 10); | |
a6ec74c1 JH |
120 | } |
121 | return (sv); | |
122 | } | |
123 | ||
124 | /* Explosives and implosives. */ | |
125 | ||
126 | #if 'I' == 73 && 'J' == 74 | |
127 | /* On an ASCII/ISO kind of system */ | |
128 | #define ISUUCHAR(ch) ((ch) >= ' ' && (ch) < 'a') | |
129 | #else | |
130 | /* | |
131 | Some other sort of character set - use memchr() so we don't match | |
132 | the null byte. | |
133 | */ | |
134 | #define ISUUCHAR(ch) (memchr(PL_uuemap, (ch), sizeof(PL_uuemap)-1) || (ch) == ' ') | |
135 | #endif | |
136 | ||
62f95557 IZ |
137 | #define TYPE_IS_SHRIEKING 0x100 |
138 | ||
206947d2 | 139 | /* Returns the sizeof() struct described by pat */ |
028d1f6d | 140 | STATIC I32 |
49704364 | 141 | S_measure_struct(pTHX_ register tempsym_t* symptr) |
206947d2 | 142 | { |
49704364 | 143 | register I32 len = 0; |
206947d2 | 144 | register I32 total = 0; |
49704364 WL |
145 | int star; |
146 | ||
206947d2 IZ |
147 | register int size; |
148 | ||
49704364 | 149 | while (next_symbol(symptr)) { |
206947d2 | 150 | |
49704364 WL |
151 | switch( symptr->howlen ){ |
152 | case e_no_len: | |
153 | case e_number: | |
154 | len = symptr->length; | |
155 | break; | |
156 | case e_star: | |
157 | Perl_croak(aTHX_ "Within []-length '*' not allowed in %s", | |
158 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); | |
159 | break; | |
160 | } | |
161 | ||
162 | switch(symptr->code) { | |
206947d2 | 163 | default: |
49704364 WL |
164 | Perl_croak(aTHX_ "Invalid type '%c' in %s", |
165 | (int)symptr->code, | |
166 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); | |
206947d2 IZ |
167 | case '@': |
168 | case '/': | |
169 | case 'U': /* XXXX Is it correct? */ | |
170 | case 'w': | |
171 | case 'u': | |
49704364 WL |
172 | Perl_croak(aTHX_ "Within []-length '%c' not allowed in %s", |
173 | (int)symptr->code, | |
174 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); | |
206947d2 IZ |
175 | case '%': |
176 | size = 0; | |
177 | break; | |
178 | case '(': | |
179 | { | |
49704364 WL |
180 | tempsym_t savsym = *symptr; |
181 | symptr->patptr = savsym.grpbeg; | |
182 | symptr->patend = savsym.grpend; | |
62f95557 IZ |
183 | /* XXXX Theoretically, we need to measure many times at different |
184 | positions, since the subexpression may contain | |
185 | alignment commands, but be not of aligned length. | |
186 | Need to detect this and croak(). */ | |
49704364 WL |
187 | size = measure_struct(symptr); |
188 | *symptr = savsym; | |
206947d2 IZ |
189 | break; |
190 | } | |
62f95557 IZ |
191 | case 'X' | TYPE_IS_SHRIEKING: |
192 | /* XXXX Is this useful? Then need to treat MEASURE_BACKWARDS. */ | |
193 | if (!len) /* Avoid division by 0 */ | |
194 | len = 1; | |
195 | len = total % len; /* Assumed: the start is aligned. */ | |
196 | /* FALL THROUGH */ | |
206947d2 IZ |
197 | case 'X': |
198 | size = -1; | |
199 | if (total < len) | |
49704364 WL |
200 | Perl_croak(aTHX_ "'X' outside of string in %s", |
201 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); | |
206947d2 | 202 | break; |
62f95557 IZ |
203 | case 'x' | TYPE_IS_SHRIEKING: |
204 | if (!len) /* Avoid division by 0 */ | |
205 | len = 1; | |
206 | star = total % len; /* Assumed: the start is aligned. */ | |
207 | if (star) /* Other portable ways? */ | |
208 | len = len - star; | |
209 | else | |
210 | len = 0; | |
211 | /* FALL THROUGH */ | |
206947d2 IZ |
212 | case 'x': |
213 | case 'A': | |
214 | case 'Z': | |
215 | case 'a': | |
216 | case 'c': | |
217 | case 'C': | |
218 | size = 1; | |
219 | break; | |
220 | case 'B': | |
221 | case 'b': | |
222 | len = (len + 7)/8; | |
223 | size = 1; | |
224 | break; | |
225 | case 'H': | |
226 | case 'h': | |
227 | len = (len + 1)/2; | |
228 | size = 1; | |
229 | break; | |
49704364 WL |
230 | case 's' | TYPE_IS_SHRIEKING: |
231 | #if SHORTSIZE != SIZE16 | |
232 | size = sizeof(short); | |
233 | break; | |
234 | #else | |
235 | /* FALL THROUGH */ | |
236 | #endif | |
206947d2 | 237 | case 's': |
206947d2 | 238 | size = SIZE16; |
49704364 WL |
239 | break; |
240 | case 'S' | TYPE_IS_SHRIEKING: | |
241 | #if SHORTSIZE != SIZE16 | |
242 | size = sizeof(unsigned short); | |
243 | break; | |
206947d2 | 244 | #else |
49704364 | 245 | /* FALL THROUGH */ |
206947d2 | 246 | #endif |
206947d2 IZ |
247 | case 'v': |
248 | case 'n': | |
249 | case 'S': | |
206947d2 | 250 | size = SIZE16; |
206947d2 | 251 | break; |
49704364 | 252 | case 'i' | TYPE_IS_SHRIEKING: |
206947d2 IZ |
253 | case 'i': |
254 | size = sizeof(int); | |
255 | break; | |
49704364 | 256 | case 'I' | TYPE_IS_SHRIEKING: |
206947d2 IZ |
257 | case 'I': |
258 | size = sizeof(unsigned int); | |
259 | break; | |
92d41999 JH |
260 | case 'j': |
261 | size = IVSIZE; | |
262 | break; | |
263 | case 'J': | |
264 | size = UVSIZE; | |
265 | break; | |
49704364 WL |
266 | case 'l' | TYPE_IS_SHRIEKING: |
267 | #if LONGSIZE != SIZE32 | |
268 | size = sizeof(long); | |
269 | break; | |
270 | #else | |
271 | /* FALL THROUGH */ | |
272 | #endif | |
206947d2 | 273 | case 'l': |
206947d2 | 274 | size = SIZE32; |
49704364 WL |
275 | break; |
276 | case 'L' | TYPE_IS_SHRIEKING: | |
277 | #if LONGSIZE != SIZE32 | |
278 | size = sizeof(unsigned long); | |
279 | break; | |
206947d2 | 280 | #else |
49704364 | 281 | /* FALL THROUGH */ |
206947d2 | 282 | #endif |
206947d2 IZ |
283 | case 'V': |
284 | case 'N': | |
285 | case 'L': | |
206947d2 | 286 | size = SIZE32; |
206947d2 IZ |
287 | break; |
288 | case 'P': | |
289 | len = 1; | |
290 | /* FALL THROUGH */ | |
291 | case 'p': | |
292 | size = sizeof(char*); | |
293 | break; | |
294 | #ifdef HAS_QUAD | |
295 | case 'q': | |
296 | size = sizeof(Quad_t); | |
297 | break; | |
298 | case 'Q': | |
299 | size = sizeof(Uquad_t); | |
300 | break; | |
301 | #endif | |
302 | case 'f': | |
206947d2 IZ |
303 | size = sizeof(float); |
304 | break; | |
305 | case 'd': | |
206947d2 IZ |
306 | size = sizeof(double); |
307 | break; | |
92d41999 JH |
308 | case 'F': |
309 | size = NVSIZE; | |
310 | break; | |
311 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) | |
312 | case 'D': | |
313 | size = LONG_DOUBLESIZE; | |
314 | break; | |
315 | #endif | |
206947d2 IZ |
316 | } |
317 | total += len * size; | |
318 | } | |
319 | return total; | |
320 | } | |
321 | ||
49704364 WL |
322 | |
323 | /* locate matching closing parenthesis or bracket | |
324 | * returns char pointer to char after match, or NULL | |
325 | */ | |
326 | STATIC char * | |
327 | S_group_end(pTHX_ register char *patptr, register char *patend, char ender) | |
18529408 | 328 | { |
49704364 WL |
329 | while (patptr < patend) { |
330 | char c = *patptr++; | |
331 | ||
332 | if (isSPACE(c)) | |
333 | continue; | |
334 | else if (c == ender) | |
335 | return patptr-1; | |
336 | else if (c == '#') { | |
337 | while (patptr < patend && *patptr != '\n') | |
338 | patptr++; | |
339 | continue; | |
340 | } else if (c == '(') | |
341 | patptr = group_end(patptr, patend, ')') + 1; | |
342 | else if (c == '[') | |
343 | patptr = group_end(patptr, patend, ']') + 1; | |
18529408 | 344 | } |
49704364 WL |
345 | Perl_croak(aTHX_ "No group ending character '%c' found in template", |
346 | ender); | |
347 | return 0; | |
18529408 IZ |
348 | } |
349 | ||
49704364 WL |
350 | |
351 | /* Convert unsigned decimal number to binary. | |
352 | * Expects a pointer to the first digit and address of length variable | |
353 | * Advances char pointer to 1st non-digit char and returns number | |
354 | */ | |
18529408 | 355 | STATIC char * |
49704364 WL |
356 | S_get_num(pTHX_ register char *patptr, I32 *lenptr ) |
357 | { | |
358 | I32 len = *patptr++ - '0'; | |
359 | while (isDIGIT(*patptr)) { | |
360 | if (len >= 0x7FFFFFFF/10) | |
361 | Perl_croak(aTHX_ "pack/unpack repeat count overflow"); | |
362 | len = (len * 10) + (*patptr++ - '0'); | |
363 | } | |
364 | *lenptr = len; | |
365 | return patptr; | |
366 | } | |
367 | ||
368 | /* The marvellous template parsing routine: Using state stored in *symptr, | |
369 | * locates next template code and count | |
370 | */ | |
371 | STATIC bool | |
372 | S_next_symbol(pTHX_ register tempsym_t* symptr ) | |
18529408 | 373 | { |
49704364 WL |
374 | register char* patptr = symptr->patptr; |
375 | register char* patend = symptr->patend; | |
376 | ||
377 | symptr->flags &= ~FLAG_SLASH; | |
378 | ||
379 | while (patptr < patend) { | |
380 | if (isSPACE(*patptr)) | |
381 | patptr++; | |
382 | else if (*patptr == '#') { | |
383 | patptr++; | |
384 | while (patptr < patend && *patptr != '\n') | |
385 | patptr++; | |
386 | if (patptr < patend) | |
387 | patptr++; | |
388 | } else { | |
389 | /* We should have found a template code */ | |
390 | I32 code = *patptr++ & 0xFF; | |
391 | ||
392 | if (code == ','){ /* grandfather in commas but with a warning */ | |
393 | if (((symptr->flags & FLAG_COMMA) == 0) && ckWARN(WARN_UNPACK)){ | |
394 | symptr->flags |= FLAG_COMMA; | |
395 | Perl_warner(aTHX_ packWARN(WARN_UNPACK), | |
396 | "Invalid type ',' in %s", | |
397 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); | |
398 | } | |
399 | continue; | |
400 | } | |
401 | ||
402 | /* for '(', skip to ')' */ | |
403 | if (code == '(') { | |
404 | if( isDIGIT(*patptr) || *patptr == '*' || *patptr == '[' ) | |
405 | Perl_croak(aTHX_ "()-group starts with a count in %s", | |
406 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); | |
407 | symptr->grpbeg = patptr; | |
408 | patptr = 1 + ( symptr->grpend = group_end(patptr, patend, ')') ); | |
409 | if( symptr->level >= MAX_SUB_TEMPLATE_LEVEL ) | |
410 | Perl_croak(aTHX_ "Too deeply nested ()-groups in %s", | |
411 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); | |
412 | } | |
413 | ||
414 | /* test for '!' modifier */ | |
415 | if (patptr < patend && *patptr == '!') { | |
416 | static const char natstr[] = "sSiIlLxX"; | |
417 | patptr++; | |
418 | if (strchr(natstr, code)) | |
419 | code |= TYPE_IS_SHRIEKING; | |
420 | else | |
5e6396ae | 421 | Perl_croak(aTHX_ "'!' allowed only after types %s in %s", |
49704364 WL |
422 | natstr, symptr->flags & FLAG_PACK ? "pack" : "unpack" ); |
423 | } | |
424 | ||
425 | /* look for count and/or / */ | |
426 | if (patptr < patend) { | |
427 | if (isDIGIT(*patptr)) { | |
428 | patptr = get_num( patptr, &symptr->length ); | |
429 | symptr->howlen = e_number; | |
430 | ||
431 | } else if (*patptr == '*') { | |
432 | patptr++; | |
433 | symptr->howlen = e_star; | |
434 | ||
435 | } else if (*patptr == '[') { | |
436 | char* lenptr = ++patptr; | |
437 | symptr->howlen = e_number; | |
438 | patptr = group_end( patptr, patend, ']' ) + 1; | |
439 | /* what kind of [] is it? */ | |
440 | if (isDIGIT(*lenptr)) { | |
441 | lenptr = get_num( lenptr, &symptr->length ); | |
442 | if( *lenptr != ']' ) | |
443 | Perl_croak(aTHX_ "Malformed integer in [] in %s", | |
444 | symptr->flags & FLAG_PACK ? "pack" : "unpack"); | |
445 | } else { | |
446 | tempsym_t savsym = *symptr; | |
447 | symptr->patend = patptr-1; | |
448 | symptr->patptr = lenptr; | |
449 | savsym.length = measure_struct(symptr); | |
450 | *symptr = savsym; | |
451 | } | |
452 | } else { | |
453 | symptr->howlen = e_no_len; | |
454 | symptr->length = 1; | |
455 | } | |
456 | ||
457 | /* try to find / */ | |
458 | while (patptr < patend) { | |
459 | if (isSPACE(*patptr)) | |
460 | patptr++; | |
461 | else if (*patptr == '#') { | |
462 | patptr++; | |
463 | while (patptr < patend && *patptr != '\n') | |
464 | patptr++; | |
465 | if (patptr < patend) | |
466 | patptr++; | |
467 | } else { | |
468 | if( *patptr == '/' ){ | |
469 | symptr->flags |= FLAG_SLASH; | |
470 | patptr++; | |
471 | if( patptr < patend && | |
472 | (isDIGIT(*patptr) || *patptr == '*' || *patptr == '[') ) | |
473 | Perl_croak(aTHX_ "'/' does not take a repeat count in %s", | |
474 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); | |
475 | } | |
476 | break; | |
477 | } | |
18529408 | 478 | } |
49704364 WL |
479 | } else { |
480 | /* at end - no count, no / */ | |
481 | symptr->howlen = e_no_len; | |
482 | symptr->length = 1; | |
483 | } | |
484 | ||
485 | symptr->code = code; | |
486 | symptr->patptr = patptr; | |
487 | return TRUE; | |
18529408 | 488 | } |
49704364 WL |
489 | } |
490 | symptr->patptr = patptr; | |
491 | return FALSE; | |
18529408 IZ |
492 | } |
493 | ||
18529408 IZ |
494 | /* |
495 | =for apidoc unpack_str | |
496 | ||
7accc089 JH |
497 | The engine implementing unpack() Perl function. Note: parameters strbeg, new_s |
498 | and ocnt are not used. This call should not be used, use unpackstring instead. | |
18529408 IZ |
499 | |
500 | =cut */ | |
501 | ||
502 | I32 | |
503 | Perl_unpack_str(pTHX_ char *pat, register char *patend, register char *s, char *strbeg, char *strend, char **new_s, I32 ocnt, U32 flags) | |
a6ec74c1 | 504 | { |
49704364 WL |
505 | tempsym_t sym = { 0 }; |
506 | sym.patptr = pat; | |
507 | sym.patend = patend; | |
508 | sym.flags = flags; | |
509 | ||
510 | return unpack_rec(&sym, s, s, strend, NULL ); | |
511 | } | |
512 | ||
7accc089 JH |
513 | /* |
514 | =for apidoc unpackstring | |
515 | ||
608d3aed WL |
516 | The engine implementing unpack() Perl function. C<unpackstring> puts the |
517 | extracted list items on the stack and returns the number of elements. | |
518 | Issue C<PUTBACK> before and C<SPAGAIN> after the call to this function. | |
7accc089 JH |
519 | |
520 | =cut */ | |
521 | ||
522 | I32 | |
523 | Perl_unpackstring(pTHX_ char *pat, register char *patend, register char *s, char *strend, U32 flags) | |
524 | { | |
525 | tempsym_t sym = { 0 }; | |
526 | sym.patptr = pat; | |
527 | sym.patend = patend; | |
528 | sym.flags = flags; | |
529 | ||
530 | return unpack_rec(&sym, s, s, strend, NULL ); | |
531 | } | |
532 | ||
49704364 WL |
533 | STATIC |
534 | I32 | |
535 | S_unpack_rec(pTHX_ register tempsym_t* symptr, register char *s, char *strbeg, char *strend, char **new_s ) | |
536 | { | |
a6ec74c1 | 537 | dSP; |
a6ec74c1 | 538 | I32 datumtype; |
49704364 | 539 | register I32 len = 0; |
a6ec74c1 JH |
540 | register I32 bits = 0; |
541 | register char *str; | |
18529408 IZ |
542 | SV *sv; |
543 | I32 start_sp_offset = SP - PL_stack_base; | |
49704364 | 544 | howlen_t howlen; |
a6ec74c1 JH |
545 | |
546 | /* These must not be in registers: */ | |
547 | short ashort; | |
548 | int aint; | |
549 | long along; | |
550 | #ifdef HAS_QUAD | |
551 | Quad_t aquad; | |
552 | #endif | |
553 | U16 aushort; | |
554 | unsigned int auint; | |
555 | U32 aulong; | |
556 | #ifdef HAS_QUAD | |
557 | Uquad_t auquad; | |
558 | #endif | |
559 | char *aptr; | |
560 | float afloat; | |
561 | double adouble; | |
562 | I32 checksum = 0; | |
92d41999 | 563 | UV cuv = 0; |
a6ec74c1 | 564 | NV cdouble = 0.0; |
92d41999 | 565 | const int bits_in_uv = 8 * sizeof(cuv); |
49704364 WL |
566 | char* strrelbeg = s; |
567 | bool beyond = FALSE; | |
568 | bool unpack_only_one = (symptr->flags & FLAG_UNPACK_ONLY_ONE) != 0; | |
569 | ||
92d41999 JH |
570 | IV aiv; |
571 | UV auv; | |
572 | NV anv; | |
573 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) | |
574 | long double aldouble; | |
575 | #endif | |
a6ec74c1 | 576 | |
49704364 WL |
577 | while (next_symbol(symptr)) { |
578 | datumtype = symptr->code; | |
206947d2 IZ |
579 | /* do first one only unless in list context |
580 | / is implemented by unpacking the count, then poping it from the | |
581 | stack, so must check that we're not in the middle of a / */ | |
49704364 | 582 | if ( unpack_only_one |
206947d2 | 583 | && (SP - PL_stack_base == start_sp_offset + 1) |
49704364 | 584 | && (datumtype != '/') ) /* XXX can this be omitted */ |
206947d2 | 585 | break; |
49704364 WL |
586 | |
587 | switch( howlen = symptr->howlen ){ | |
588 | case e_no_len: | |
589 | case e_number: | |
590 | len = symptr->length; | |
591 | break; | |
592 | case e_star: | |
593 | len = strend - strbeg; /* long enough */ | |
594 | break; | |
595 | } | |
18529408 | 596 | |
a6ec74c1 | 597 | redo_switch: |
49704364 | 598 | beyond = s >= strend; |
a6ec74c1 JH |
599 | switch(datumtype) { |
600 | default: | |
49704364 WL |
601 | Perl_croak(aTHX_ "Invalid type '%c' in unpack", (int)datumtype ); |
602 | ||
a6ec74c1 | 603 | case '%': |
49704364 | 604 | if (howlen == e_no_len) |
18529408 | 605 | len = 16; /* len is not specified */ |
a6ec74c1 | 606 | checksum = len; |
92d41999 | 607 | cuv = 0; |
a6ec74c1 | 608 | cdouble = 0; |
18529408 | 609 | continue; |
a6ec74c1 | 610 | break; |
18529408 IZ |
611 | case '(': |
612 | { | |
18529408 | 613 | char *ss = s; /* Move from register */ |
49704364 WL |
614 | tempsym_t savsym = *symptr; |
615 | symptr->patend = savsym.grpend; | |
616 | symptr->level++; | |
18529408 IZ |
617 | PUTBACK; |
618 | while (len--) { | |
49704364 WL |
619 | symptr->patptr = savsym.grpbeg; |
620 | unpack_rec(symptr, ss, strbeg, strend, &ss ); | |
621 | if (ss == strend && savsym.howlen == e_star) | |
622 | break; /* No way to continue */ | |
18529408 IZ |
623 | } |
624 | SPAGAIN; | |
625 | s = ss; | |
49704364 WL |
626 | savsym.flags = symptr->flags; |
627 | *symptr = savsym; | |
18529408 IZ |
628 | break; |
629 | } | |
a6ec74c1 | 630 | case '@': |
49704364 WL |
631 | if (len > strend - strrelbeg) |
632 | Perl_croak(aTHX_ "'@' outside of string in unpack"); | |
633 | s = strrelbeg + len; | |
a6ec74c1 | 634 | break; |
62f95557 IZ |
635 | case 'X' | TYPE_IS_SHRIEKING: |
636 | if (!len) /* Avoid division by 0 */ | |
637 | len = 1; | |
638 | len = (s - strbeg) % len; | |
639 | /* FALL THROUGH */ | |
a6ec74c1 JH |
640 | case 'X': |
641 | if (len > s - strbeg) | |
49704364 | 642 | Perl_croak(aTHX_ "'X' outside of string in unpack" ); |
a6ec74c1 JH |
643 | s -= len; |
644 | break; | |
62f95557 IZ |
645 | case 'x' | TYPE_IS_SHRIEKING: |
646 | if (!len) /* Avoid division by 0 */ | |
647 | len = 1; | |
648 | aint = (s - strbeg) % len; | |
649 | if (aint) /* Other portable ways? */ | |
650 | len = len - aint; | |
651 | else | |
652 | len = 0; | |
653 | /* FALL THROUGH */ | |
a6ec74c1 JH |
654 | case 'x': |
655 | if (len > strend - s) | |
49704364 | 656 | Perl_croak(aTHX_ "'x' outside of string in unpack"); |
a6ec74c1 JH |
657 | s += len; |
658 | break; | |
659 | case '/': | |
49704364 WL |
660 | Perl_croak(aTHX_ "'/' must follow a numeric type in unpack"); |
661 | break; | |
a6ec74c1 JH |
662 | case 'A': |
663 | case 'Z': | |
664 | case 'a': | |
665 | if (len > strend - s) | |
666 | len = strend - s; | |
667 | if (checksum) | |
668 | goto uchar_checksum; | |
669 | sv = NEWSV(35, len); | |
670 | sv_setpvn(sv, s, len); | |
49704364 | 671 | if (len > 0 && (datumtype == 'A' || datumtype == 'Z')) { |
a6ec74c1 JH |
672 | aptr = s; /* borrow register */ |
673 | if (datumtype == 'Z') { /* 'Z' strips stuff after first null */ | |
674 | s = SvPVX(sv); | |
675 | while (*s) | |
676 | s++; | |
49704364 | 677 | if (howlen == e_star) /* exact for 'Z*' */ |
d50dd4e4 | 678 | len = s - SvPVX(sv) + 1; |
a6ec74c1 JH |
679 | } |
680 | else { /* 'A' strips both nulls and spaces */ | |
681 | s = SvPVX(sv) + len - 1; | |
682 | while (s >= SvPVX(sv) && (!*s || isSPACE(*s))) | |
683 | s--; | |
684 | *++s = '\0'; | |
685 | } | |
686 | SvCUR_set(sv, s - SvPVX(sv)); | |
687 | s = aptr; /* unborrow register */ | |
688 | } | |
d50dd4e4 | 689 | s += len; |
a6ec74c1 JH |
690 | XPUSHs(sv_2mortal(sv)); |
691 | break; | |
692 | case 'B': | |
693 | case 'b': | |
49704364 | 694 | if (howlen == e_star || len > (strend - s) * 8) |
a6ec74c1 JH |
695 | len = (strend - s) * 8; |
696 | if (checksum) { | |
697 | if (!PL_bitcount) { | |
698 | Newz(601, PL_bitcount, 256, char); | |
699 | for (bits = 1; bits < 256; bits++) { | |
700 | if (bits & 1) PL_bitcount[bits]++; | |
701 | if (bits & 2) PL_bitcount[bits]++; | |
702 | if (bits & 4) PL_bitcount[bits]++; | |
703 | if (bits & 8) PL_bitcount[bits]++; | |
704 | if (bits & 16) PL_bitcount[bits]++; | |
705 | if (bits & 32) PL_bitcount[bits]++; | |
706 | if (bits & 64) PL_bitcount[bits]++; | |
707 | if (bits & 128) PL_bitcount[bits]++; | |
708 | } | |
709 | } | |
710 | while (len >= 8) { | |
92d41999 | 711 | cuv += PL_bitcount[*(unsigned char*)s++]; |
a6ec74c1 JH |
712 | len -= 8; |
713 | } | |
714 | if (len) { | |
715 | bits = *s; | |
716 | if (datumtype == 'b') { | |
717 | while (len-- > 0) { | |
92d41999 | 718 | if (bits & 1) cuv++; |
a6ec74c1 JH |
719 | bits >>= 1; |
720 | } | |
721 | } | |
722 | else { | |
723 | while (len-- > 0) { | |
92d41999 | 724 | if (bits & 128) cuv++; |
a6ec74c1 JH |
725 | bits <<= 1; |
726 | } | |
727 | } | |
728 | } | |
729 | break; | |
730 | } | |
731 | sv = NEWSV(35, len + 1); | |
732 | SvCUR_set(sv, len); | |
733 | SvPOK_on(sv); | |
734 | str = SvPVX(sv); | |
735 | if (datumtype == 'b') { | |
736 | aint = len; | |
737 | for (len = 0; len < aint; len++) { | |
738 | if (len & 7) /*SUPPRESS 595*/ | |
739 | bits >>= 1; | |
740 | else | |
741 | bits = *s++; | |
742 | *str++ = '0' + (bits & 1); | |
743 | } | |
744 | } | |
745 | else { | |
746 | aint = len; | |
747 | for (len = 0; len < aint; len++) { | |
748 | if (len & 7) | |
749 | bits <<= 1; | |
750 | else | |
751 | bits = *s++; | |
752 | *str++ = '0' + ((bits & 128) != 0); | |
753 | } | |
754 | } | |
755 | *str = '\0'; | |
756 | XPUSHs(sv_2mortal(sv)); | |
757 | break; | |
758 | case 'H': | |
759 | case 'h': | |
49704364 | 760 | if (howlen == e_star || len > (strend - s) * 2) |
a6ec74c1 JH |
761 | len = (strend - s) * 2; |
762 | sv = NEWSV(35, len + 1); | |
763 | SvCUR_set(sv, len); | |
764 | SvPOK_on(sv); | |
765 | str = SvPVX(sv); | |
766 | if (datumtype == 'h') { | |
767 | aint = len; | |
768 | for (len = 0; len < aint; len++) { | |
769 | if (len & 1) | |
770 | bits >>= 4; | |
771 | else | |
772 | bits = *s++; | |
773 | *str++ = PL_hexdigit[bits & 15]; | |
774 | } | |
775 | } | |
776 | else { | |
777 | aint = len; | |
778 | for (len = 0; len < aint; len++) { | |
779 | if (len & 1) | |
780 | bits <<= 4; | |
781 | else | |
782 | bits = *s++; | |
783 | *str++ = PL_hexdigit[(bits >> 4) & 15]; | |
784 | } | |
785 | } | |
786 | *str = '\0'; | |
787 | XPUSHs(sv_2mortal(sv)); | |
788 | break; | |
789 | case 'c': | |
790 | if (len > strend - s) | |
791 | len = strend - s; | |
792 | if (checksum) { | |
793 | while (len-- > 0) { | |
794 | aint = *s++; | |
795 | if (aint >= 128) /* fake up signed chars */ | |
796 | aint -= 256; | |
fa8ec7c1 NC |
797 | if (checksum > bits_in_uv) |
798 | cdouble += (NV)aint; | |
799 | else | |
92d41999 | 800 | cuv += aint; |
a6ec74c1 JH |
801 | } |
802 | } | |
803 | else { | |
49704364 | 804 | if (len && unpack_only_one) |
c8f824eb | 805 | len = 1; |
a6ec74c1 JH |
806 | EXTEND(SP, len); |
807 | EXTEND_MORTAL(len); | |
808 | while (len-- > 0) { | |
809 | aint = *s++; | |
810 | if (aint >= 128) /* fake up signed chars */ | |
811 | aint -= 256; | |
812 | sv = NEWSV(36, 0); | |
813 | sv_setiv(sv, (IV)aint); | |
814 | PUSHs(sv_2mortal(sv)); | |
815 | } | |
816 | } | |
817 | break; | |
818 | case 'C': | |
35bcd338 JH |
819 | unpack_C: /* unpack U will jump here if not UTF-8 */ |
820 | if (len == 0) { | |
49704364 | 821 | symptr->flags &= ~FLAG_UNPACK_DO_UTF8; |
35bcd338 JH |
822 | break; |
823 | } | |
a6ec74c1 JH |
824 | if (len > strend - s) |
825 | len = strend - s; | |
826 | if (checksum) { | |
827 | uchar_checksum: | |
828 | while (len-- > 0) { | |
829 | auint = *s++ & 255; | |
92d41999 | 830 | cuv += auint; |
a6ec74c1 JH |
831 | } |
832 | } | |
833 | else { | |
49704364 | 834 | if (len && unpack_only_one) |
c8f824eb | 835 | len = 1; |
a6ec74c1 JH |
836 | EXTEND(SP, len); |
837 | EXTEND_MORTAL(len); | |
838 | while (len-- > 0) { | |
839 | auint = *s++ & 255; | |
840 | sv = NEWSV(37, 0); | |
841 | sv_setiv(sv, (IV)auint); | |
842 | PUSHs(sv_2mortal(sv)); | |
843 | } | |
844 | } | |
845 | break; | |
846 | case 'U': | |
35bcd338 | 847 | if (len == 0) { |
49704364 | 848 | symptr->flags |= FLAG_UNPACK_DO_UTF8; |
35bcd338 JH |
849 | break; |
850 | } | |
49704364 | 851 | if ((symptr->flags & FLAG_UNPACK_DO_UTF8) == 0) |
35bcd338 | 852 | goto unpack_C; |
a6ec74c1 JH |
853 | if (len > strend - s) |
854 | len = strend - s; | |
855 | if (checksum) { | |
856 | while (len-- > 0 && s < strend) { | |
857 | STRLEN alen; | |
872c91ae | 858 | auint = NATIVE_TO_UNI(utf8n_to_uvchr((U8*)s, strend - s, &alen, ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANYUV)); |
a6ec74c1 JH |
859 | along = alen; |
860 | s += along; | |
fa8ec7c1 | 861 | if (checksum > bits_in_uv) |
a6ec74c1 JH |
862 | cdouble += (NV)auint; |
863 | else | |
92d41999 | 864 | cuv += auint; |
a6ec74c1 JH |
865 | } |
866 | } | |
867 | else { | |
49704364 | 868 | if (len && unpack_only_one) |
c8f824eb | 869 | len = 1; |
a6ec74c1 JH |
870 | EXTEND(SP, len); |
871 | EXTEND_MORTAL(len); | |
872 | while (len-- > 0 && s < strend) { | |
873 | STRLEN alen; | |
872c91ae | 874 | auint = NATIVE_TO_UNI(utf8n_to_uvchr((U8*)s, strend - s, &alen, ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANYUV)); |
a6ec74c1 JH |
875 | along = alen; |
876 | s += along; | |
877 | sv = NEWSV(37, 0); | |
878 | sv_setuv(sv, (UV)auint); | |
879 | PUSHs(sv_2mortal(sv)); | |
880 | } | |
881 | } | |
882 | break; | |
49704364 WL |
883 | case 's' | TYPE_IS_SHRIEKING: |
884 | #if SHORTSIZE != SIZE16 | |
885 | along = (strend - s) / sizeof(short); | |
a6ec74c1 JH |
886 | if (len > along) |
887 | len = along; | |
888 | if (checksum) { | |
49704364 WL |
889 | short ashort; |
890 | while (len-- > 0) { | |
891 | COPYNN(s, &ashort, sizeof(short)); | |
892 | s += sizeof(short); | |
893 | if (checksum > bits_in_uv) | |
894 | cdouble += (NV)ashort; | |
895 | else | |
896 | cuv += ashort; | |
a6ec74c1 | 897 | |
a6ec74c1 | 898 | } |
49704364 WL |
899 | } |
900 | else { | |
73b5735c | 901 | short ashort; |
49704364 WL |
902 | if (len && unpack_only_one) |
903 | len = 1; | |
904 | EXTEND(SP, len); | |
905 | EXTEND_MORTAL(len); | |
49704364 WL |
906 | while (len-- > 0) { |
907 | COPYNN(s, &ashort, sizeof(short)); | |
908 | s += sizeof(short); | |
909 | sv = NEWSV(38, 0); | |
910 | sv_setiv(sv, (IV)ashort); | |
911 | PUSHs(sv_2mortal(sv)); | |
912 | } | |
913 | } | |
914 | break; | |
915 | #else | |
916 | /* Fallthrough! */ | |
a6ec74c1 | 917 | #endif |
49704364 WL |
918 | case 's': |
919 | along = (strend - s) / SIZE16; | |
920 | if (len > along) | |
921 | len = along; | |
922 | if (checksum) { | |
923 | while (len-- > 0) { | |
924 | COPY16(s, &ashort); | |
a6ec74c1 | 925 | #if SHORTSIZE > SIZE16 |
49704364 WL |
926 | if (ashort > 32767) |
927 | ashort -= 65536; | |
a6ec74c1 | 928 | #endif |
49704364 WL |
929 | s += SIZE16; |
930 | if (checksum > bits_in_uv) | |
931 | cdouble += (NV)ashort; | |
932 | else | |
933 | cuv += ashort; | |
a6ec74c1 JH |
934 | } |
935 | } | |
936 | else { | |
49704364 | 937 | if (len && unpack_only_one) |
c8f824eb | 938 | len = 1; |
a6ec74c1 JH |
939 | EXTEND(SP, len); |
940 | EXTEND_MORTAL(len); | |
49704364 WL |
941 | |
942 | while (len-- > 0) { | |
943 | COPY16(s, &ashort); | |
a6ec74c1 | 944 | #if SHORTSIZE > SIZE16 |
49704364 WL |
945 | if (ashort > 32767) |
946 | ashort -= 65536; | |
a6ec74c1 | 947 | #endif |
49704364 WL |
948 | s += SIZE16; |
949 | sv = NEWSV(38, 0); | |
950 | sv_setiv(sv, (IV)ashort); | |
951 | PUSHs(sv_2mortal(sv)); | |
a6ec74c1 JH |
952 | } |
953 | } | |
954 | break; | |
49704364 WL |
955 | case 'S' | TYPE_IS_SHRIEKING: |
956 | #if SHORTSIZE != SIZE16 | |
7accc089 | 957 | along = (strend - s) / sizeof(unsigned short); |
49704364 WL |
958 | if (len > along) |
959 | len = along; | |
960 | if (checksum) { | |
961 | unsigned short aushort; | |
962 | while (len-- > 0) { | |
963 | COPYNN(s, &aushort, sizeof(unsigned short)); | |
964 | s += sizeof(unsigned short); | |
965 | if (checksum > bits_in_uv) | |
966 | cdouble += (NV)aushort; | |
967 | else | |
968 | cuv += aushort; | |
969 | } | |
970 | } | |
971 | else { | |
972 | if (len && unpack_only_one) | |
973 | len = 1; | |
974 | EXTEND(SP, len); | |
975 | EXTEND_MORTAL(len); | |
976 | while (len-- > 0) { | |
977 | unsigned short aushort; | |
978 | COPYNN(s, &aushort, sizeof(unsigned short)); | |
979 | s += sizeof(unsigned short); | |
980 | sv = NEWSV(39, 0); | |
981 | sv_setiv(sv, (UV)aushort); | |
982 | PUSHs(sv_2mortal(sv)); | |
983 | } | |
984 | } | |
985 | break; | |
986 | #else | |
987 | /* Fallhrough! */ | |
988 | #endif | |
a6ec74c1 JH |
989 | case 'v': |
990 | case 'n': | |
991 | case 'S': | |
a6ec74c1 | 992 | along = (strend - s) / SIZE16; |
a6ec74c1 JH |
993 | if (len > along) |
994 | len = along; | |
995 | if (checksum) { | |
49704364 WL |
996 | while (len-- > 0) { |
997 | COPY16(s, &aushort); | |
998 | s += SIZE16; | |
a6ec74c1 | 999 | #ifdef HAS_NTOHS |
49704364 WL |
1000 | if (datumtype == 'n') |
1001 | aushort = PerlSock_ntohs(aushort); | |
a6ec74c1 JH |
1002 | #endif |
1003 | #ifdef HAS_VTOHS | |
49704364 WL |
1004 | if (datumtype == 'v') |
1005 | aushort = vtohs(aushort); | |
a6ec74c1 | 1006 | #endif |
49704364 WL |
1007 | if (checksum > bits_in_uv) |
1008 | cdouble += (NV)aushort; | |
1009 | else | |
1010 | cuv += aushort; | |
a6ec74c1 JH |
1011 | } |
1012 | } | |
1013 | else { | |
49704364 | 1014 | if (len && unpack_only_one) |
c8f824eb | 1015 | len = 1; |
a6ec74c1 JH |
1016 | EXTEND(SP, len); |
1017 | EXTEND_MORTAL(len); | |
49704364 WL |
1018 | while (len-- > 0) { |
1019 | COPY16(s, &aushort); | |
1020 | s += SIZE16; | |
1021 | sv = NEWSV(39, 0); | |
a6ec74c1 | 1022 | #ifdef HAS_NTOHS |
49704364 WL |
1023 | if (datumtype == 'n') |
1024 | aushort = PerlSock_ntohs(aushort); | |
a6ec74c1 JH |
1025 | #endif |
1026 | #ifdef HAS_VTOHS | |
49704364 WL |
1027 | if (datumtype == 'v') |
1028 | aushort = vtohs(aushort); | |
a6ec74c1 | 1029 | #endif |
49704364 WL |
1030 | sv_setiv(sv, (UV)aushort); |
1031 | PUSHs(sv_2mortal(sv)); | |
a6ec74c1 JH |
1032 | } |
1033 | } | |
1034 | break; | |
1035 | case 'i': | |
49704364 | 1036 | case 'i' | TYPE_IS_SHRIEKING: |
a6ec74c1 JH |
1037 | along = (strend - s) / sizeof(int); |
1038 | if (len > along) | |
1039 | len = along; | |
1040 | if (checksum) { | |
1041 | while (len-- > 0) { | |
1042 | Copy(s, &aint, 1, int); | |
1043 | s += sizeof(int); | |
fa8ec7c1 | 1044 | if (checksum > bits_in_uv) |
a6ec74c1 JH |
1045 | cdouble += (NV)aint; |
1046 | else | |
92d41999 | 1047 | cuv += aint; |
a6ec74c1 JH |
1048 | } |
1049 | } | |
1050 | else { | |
49704364 | 1051 | if (len && unpack_only_one) |
c8f824eb | 1052 | len = 1; |
a6ec74c1 JH |
1053 | EXTEND(SP, len); |
1054 | EXTEND_MORTAL(len); | |
1055 | while (len-- > 0) { | |
1056 | Copy(s, &aint, 1, int); | |
1057 | s += sizeof(int); | |
1058 | sv = NEWSV(40, 0); | |
1059 | #ifdef __osf__ | |
1060 | /* Without the dummy below unpack("i", pack("i",-1)) | |
1061 | * return 0xFFffFFff instead of -1 for Digital Unix V4.0 | |
1062 | * cc with optimization turned on. | |
1063 | * | |
1064 | * The bug was detected in | |
1065 | * DEC C V5.8-009 on Digital UNIX V4.0 (Rev. 1091) (V4.0E) | |
1066 | * with optimization (-O4) turned on. | |
1067 | * DEC C V5.2-040 on Digital UNIX V4.0 (Rev. 564) (V4.0B) | |
1068 | * does not have this problem even with -O4. | |
1069 | * | |
1070 | * This bug was reported as DECC_BUGS 1431 | |
1071 | * and tracked internally as GEM_BUGS 7775. | |
1072 | * | |
1073 | * The bug is fixed in | |
1074 | * Tru64 UNIX V5.0: Compaq C V6.1-006 or later | |
1075 | * UNIX V4.0F support: DEC C V5.9-006 or later | |
1076 | * UNIX V4.0E support: DEC C V5.8-011 or later | |
1077 | * and also in DTK. | |
1078 | * | |
1079 | * See also few lines later for the same bug. | |
1080 | */ | |
1081 | (aint) ? | |
1082 | sv_setiv(sv, (IV)aint) : | |
1083 | #endif | |
1084 | sv_setiv(sv, (IV)aint); | |
1085 | PUSHs(sv_2mortal(sv)); | |
1086 | } | |
1087 | } | |
1088 | break; | |
1089 | case 'I': | |
49704364 | 1090 | case 'I' | TYPE_IS_SHRIEKING: |
a6ec74c1 JH |
1091 | along = (strend - s) / sizeof(unsigned int); |
1092 | if (len > along) | |
1093 | len = along; | |
1094 | if (checksum) { | |
1095 | while (len-- > 0) { | |
1096 | Copy(s, &auint, 1, unsigned int); | |
1097 | s += sizeof(unsigned int); | |
fa8ec7c1 | 1098 | if (checksum > bits_in_uv) |
a6ec74c1 JH |
1099 | cdouble += (NV)auint; |
1100 | else | |
92d41999 | 1101 | cuv += auint; |
a6ec74c1 JH |
1102 | } |
1103 | } | |
1104 | else { | |
49704364 | 1105 | if (len && unpack_only_one) |
c8f824eb | 1106 | len = 1; |
a6ec74c1 JH |
1107 | EXTEND(SP, len); |
1108 | EXTEND_MORTAL(len); | |
1109 | while (len-- > 0) { | |
1110 | Copy(s, &auint, 1, unsigned int); | |
1111 | s += sizeof(unsigned int); | |
1112 | sv = NEWSV(41, 0); | |
1113 | #ifdef __osf__ | |
1114 | /* Without the dummy below unpack("I", pack("I",0xFFFFFFFF)) | |
1115 | * returns 1.84467440737096e+19 instead of 0xFFFFFFFF. | |
1116 | * See details few lines earlier. */ | |
1117 | (auint) ? | |
1118 | sv_setuv(sv, (UV)auint) : | |
1119 | #endif | |
1120 | sv_setuv(sv, (UV)auint); | |
1121 | PUSHs(sv_2mortal(sv)); | |
1122 | } | |
1123 | } | |
1124 | break; | |
92d41999 JH |
1125 | case 'j': |
1126 | along = (strend - s) / IVSIZE; | |
1127 | if (len > along) | |
1128 | len = along; | |
1129 | if (checksum) { | |
1130 | while (len-- > 0) { | |
1131 | Copy(s, &aiv, 1, IV); | |
1132 | s += IVSIZE; | |
1133 | if (checksum > bits_in_uv) | |
1134 | cdouble += (NV)aiv; | |
1135 | else | |
1136 | cuv += aiv; | |
1137 | } | |
1138 | } | |
1139 | else { | |
49704364 | 1140 | if (len && unpack_only_one) |
c8f824eb | 1141 | len = 1; |
92d41999 JH |
1142 | EXTEND(SP, len); |
1143 | EXTEND_MORTAL(len); | |
1144 | while (len-- > 0) { | |
1145 | Copy(s, &aiv, 1, IV); | |
1146 | s += IVSIZE; | |
1147 | sv = NEWSV(40, 0); | |
1148 | sv_setiv(sv, aiv); | |
1149 | PUSHs(sv_2mortal(sv)); | |
1150 | } | |
1151 | } | |
1152 | break; | |
1153 | case 'J': | |
1154 | along = (strend - s) / UVSIZE; | |
1155 | if (len > along) | |
1156 | len = along; | |
1157 | if (checksum) { | |
1158 | while (len-- > 0) { | |
1159 | Copy(s, &auv, 1, UV); | |
1160 | s += UVSIZE; | |
1161 | if (checksum > bits_in_uv) | |
1162 | cdouble += (NV)auv; | |
1163 | else | |
1164 | cuv += auv; | |
1165 | } | |
1166 | } | |
1167 | else { | |
49704364 | 1168 | if (len && unpack_only_one) |
c8f824eb | 1169 | len = 1; |
92d41999 JH |
1170 | EXTEND(SP, len); |
1171 | EXTEND_MORTAL(len); | |
1172 | while (len-- > 0) { | |
1173 | Copy(s, &auv, 1, UV); | |
1174 | s += UVSIZE; | |
1175 | sv = NEWSV(41, 0); | |
1176 | sv_setuv(sv, auv); | |
1177 | PUSHs(sv_2mortal(sv)); | |
1178 | } | |
1179 | } | |
1180 | break; | |
49704364 WL |
1181 | case 'l' | TYPE_IS_SHRIEKING: |
1182 | #if LONGSIZE != SIZE32 | |
1183 | along = (strend - s) / sizeof(long); | |
a6ec74c1 JH |
1184 | if (len > along) |
1185 | len = along; | |
1186 | if (checksum) { | |
49704364 WL |
1187 | while (len-- > 0) { |
1188 | COPYNN(s, &along, sizeof(long)); | |
1189 | s += sizeof(long); | |
1190 | if (checksum > bits_in_uv) | |
1191 | cdouble += (NV)along; | |
1192 | else | |
1193 | cuv += along; | |
a6ec74c1 | 1194 | } |
49704364 WL |
1195 | } |
1196 | else { | |
1197 | if (len && unpack_only_one) | |
1198 | len = 1; | |
1199 | EXTEND(SP, len); | |
1200 | EXTEND_MORTAL(len); | |
1201 | while (len-- > 0) { | |
1202 | COPYNN(s, &along, sizeof(long)); | |
1203 | s += sizeof(long); | |
1204 | sv = NEWSV(42, 0); | |
1205 | sv_setiv(sv, (IV)along); | |
1206 | PUSHs(sv_2mortal(sv)); | |
1207 | } | |
1208 | } | |
1209 | break; | |
1210 | #else | |
1211 | /* Fallthrough! */ | |
a6ec74c1 | 1212 | #endif |
49704364 WL |
1213 | case 'l': |
1214 | along = (strend - s) / SIZE32; | |
1215 | if (len > along) | |
1216 | len = along; | |
1217 | if (checksum) { | |
1218 | while (len-- > 0) { | |
a6ec74c1 | 1219 | #if LONGSIZE > SIZE32 && INTSIZE == SIZE32 |
49704364 | 1220 | I32 along; |
a6ec74c1 | 1221 | #endif |
49704364 | 1222 | COPY32(s, &along); |
a6ec74c1 | 1223 | #if LONGSIZE > SIZE32 |
49704364 WL |
1224 | if (along > 2147483647) |
1225 | along -= 4294967296; | |
a6ec74c1 | 1226 | #endif |
49704364 WL |
1227 | s += SIZE32; |
1228 | if (checksum > bits_in_uv) | |
1229 | cdouble += (NV)along; | |
1230 | else | |
1231 | cuv += along; | |
a6ec74c1 JH |
1232 | } |
1233 | } | |
1234 | else { | |
49704364 | 1235 | if (len && unpack_only_one) |
c8f824eb | 1236 | len = 1; |
a6ec74c1 JH |
1237 | EXTEND(SP, len); |
1238 | EXTEND_MORTAL(len); | |
49704364 | 1239 | while (len-- > 0) { |
a6ec74c1 | 1240 | #if LONGSIZE > SIZE32 && INTSIZE == SIZE32 |
49704364 | 1241 | I32 along; |
a6ec74c1 | 1242 | #endif |
49704364 | 1243 | COPY32(s, &along); |
a6ec74c1 | 1244 | #if LONGSIZE > SIZE32 |
49704364 WL |
1245 | if (along > 2147483647) |
1246 | along -= 4294967296; | |
a6ec74c1 | 1247 | #endif |
49704364 WL |
1248 | s += SIZE32; |
1249 | sv = NEWSV(42, 0); | |
1250 | sv_setiv(sv, (IV)along); | |
1251 | PUSHs(sv_2mortal(sv)); | |
a6ec74c1 JH |
1252 | } |
1253 | } | |
1254 | break; | |
49704364 WL |
1255 | case 'L' | TYPE_IS_SHRIEKING: |
1256 | #if LONGSIZE != SIZE32 | |
1257 | along = (strend - s) / sizeof(unsigned long); | |
1258 | if (len > along) | |
1259 | len = along; | |
1260 | if (checksum) { | |
1261 | while (len-- > 0) { | |
1262 | unsigned long aulong; | |
1263 | COPYNN(s, &aulong, sizeof(unsigned long)); | |
1264 | s += sizeof(unsigned long); | |
1265 | if (checksum > bits_in_uv) | |
1266 | cdouble += (NV)aulong; | |
1267 | else | |
1268 | cuv += aulong; | |
1269 | } | |
1270 | } | |
1271 | else { | |
1272 | if (len && unpack_only_one) | |
1273 | len = 1; | |
1274 | EXTEND(SP, len); | |
1275 | EXTEND_MORTAL(len); | |
1276 | while (len-- > 0) { | |
1277 | unsigned long aulong; | |
1278 | COPYNN(s, &aulong, sizeof(unsigned long)); | |
1279 | s += sizeof(unsigned long); | |
1280 | sv = NEWSV(43, 0); | |
1281 | sv_setuv(sv, (UV)aulong); | |
1282 | PUSHs(sv_2mortal(sv)); | |
1283 | } | |
1284 | } | |
1285 | break; | |
1286 | #else | |
1287 | /* Fall through! */ | |
1288 | #endif | |
a6ec74c1 JH |
1289 | case 'V': |
1290 | case 'N': | |
1291 | case 'L': | |
a6ec74c1 | 1292 | along = (strend - s) / SIZE32; |
a6ec74c1 JH |
1293 | if (len > along) |
1294 | len = along; | |
1295 | if (checksum) { | |
49704364 WL |
1296 | while (len-- > 0) { |
1297 | COPY32(s, &aulong); | |
1298 | s += SIZE32; | |
a6ec74c1 | 1299 | #ifdef HAS_NTOHL |
49704364 WL |
1300 | if (datumtype == 'N') |
1301 | aulong = PerlSock_ntohl(aulong); | |
a6ec74c1 JH |
1302 | #endif |
1303 | #ifdef HAS_VTOHL | |
49704364 WL |
1304 | if (datumtype == 'V') |
1305 | aulong = vtohl(aulong); | |
a6ec74c1 | 1306 | #endif |
49704364 WL |
1307 | if (checksum > bits_in_uv) |
1308 | cdouble += (NV)aulong; | |
1309 | else | |
1310 | cuv += aulong; | |
a6ec74c1 JH |
1311 | } |
1312 | } | |
1313 | else { | |
49704364 | 1314 | if (len && unpack_only_one) |
c8f824eb | 1315 | len = 1; |
a6ec74c1 JH |
1316 | EXTEND(SP, len); |
1317 | EXTEND_MORTAL(len); | |
49704364 WL |
1318 | while (len-- > 0) { |
1319 | COPY32(s, &aulong); | |
1320 | s += SIZE32; | |
a6ec74c1 | 1321 | #ifdef HAS_NTOHL |
49704364 WL |
1322 | if (datumtype == 'N') |
1323 | aulong = PerlSock_ntohl(aulong); | |
a6ec74c1 JH |
1324 | #endif |
1325 | #ifdef HAS_VTOHL | |
49704364 WL |
1326 | if (datumtype == 'V') |
1327 | aulong = vtohl(aulong); | |
a6ec74c1 | 1328 | #endif |
49704364 WL |
1329 | sv = NEWSV(43, 0); |
1330 | sv_setuv(sv, (UV)aulong); | |
1331 | PUSHs(sv_2mortal(sv)); | |
a6ec74c1 JH |
1332 | } |
1333 | } | |
1334 | break; | |
1335 | case 'p': | |
1336 | along = (strend - s) / sizeof(char*); | |
1337 | if (len > along) | |
1338 | len = along; | |
1339 | EXTEND(SP, len); | |
1340 | EXTEND_MORTAL(len); | |
1341 | while (len-- > 0) { | |
1342 | if (sizeof(char*) > strend - s) | |
1343 | break; | |
1344 | else { | |
1345 | Copy(s, &aptr, 1, char*); | |
1346 | s += sizeof(char*); | |
1347 | } | |
1348 | sv = NEWSV(44, 0); | |
1349 | if (aptr) | |
1350 | sv_setpv(sv, aptr); | |
1351 | PUSHs(sv_2mortal(sv)); | |
1352 | } | |
1353 | break; | |
1354 | case 'w': | |
49704364 | 1355 | if (len && unpack_only_one) |
c8f824eb | 1356 | len = 1; |
a6ec74c1 JH |
1357 | EXTEND(SP, len); |
1358 | EXTEND_MORTAL(len); | |
1359 | { | |
1360 | UV auv = 0; | |
1361 | U32 bytes = 0; | |
1362 | ||
1363 | while ((len > 0) && (s < strend)) { | |
1364 | auv = (auv << 7) | (*s & 0x7f); | |
1365 | /* UTF8_IS_XXXXX not right here - using constant 0x80 */ | |
1366 | if ((U8)(*s++) < 0x80) { | |
1367 | bytes = 0; | |
1368 | sv = NEWSV(40, 0); | |
1369 | sv_setuv(sv, auv); | |
1370 | PUSHs(sv_2mortal(sv)); | |
1371 | len--; | |
1372 | auv = 0; | |
1373 | } | |
1374 | else if (++bytes >= sizeof(UV)) { /* promote to string */ | |
1375 | char *t; | |
1376 | STRLEN n_a; | |
1377 | ||
1378 | sv = Perl_newSVpvf(aTHX_ "%.*"UVf, (int)TYPE_DIGITS(UV), auv); | |
1379 | while (s < strend) { | |
eb160463 | 1380 | sv = mul128(sv, (U8)(*s & 0x7f)); |
a6ec74c1 JH |
1381 | if (!(*s++ & 0x80)) { |
1382 | bytes = 0; | |
1383 | break; | |
1384 | } | |
1385 | } | |
1386 | t = SvPV(sv, n_a); | |
1387 | while (*t == '0') | |
1388 | t++; | |
1389 | sv_chop(sv, t); | |
1390 | PUSHs(sv_2mortal(sv)); | |
1391 | len--; | |
1392 | auv = 0; | |
1393 | } | |
1394 | } | |
1395 | if ((s >= strend) && bytes) | |
49704364 | 1396 | Perl_croak(aTHX_ "Unterminated compressed integer in unpack"); |
a6ec74c1 JH |
1397 | } |
1398 | break; | |
1399 | case 'P': | |
49704364 WL |
1400 | if (symptr->howlen == e_star) |
1401 | Perl_croak(aTHX_ "'P' must have an explicit size in unpack"); | |
a6ec74c1 JH |
1402 | EXTEND(SP, 1); |
1403 | if (sizeof(char*) > strend - s) | |
1404 | break; | |
1405 | else { | |
1406 | Copy(s, &aptr, 1, char*); | |
1407 | s += sizeof(char*); | |
1408 | } | |
1409 | sv = NEWSV(44, 0); | |
1410 | if (aptr) | |
1411 | sv_setpvn(sv, aptr, len); | |
1412 | PUSHs(sv_2mortal(sv)); | |
1413 | break; | |
1414 | #ifdef HAS_QUAD | |
1415 | case 'q': | |
1416 | along = (strend - s) / sizeof(Quad_t); | |
1417 | if (len > along) | |
1418 | len = along; | |
fa8ec7c1 NC |
1419 | if (checksum) { |
1420 | while (len-- > 0) { | |
a6ec74c1 JH |
1421 | Copy(s, &aquad, 1, Quad_t); |
1422 | s += sizeof(Quad_t); | |
fa8ec7c1 NC |
1423 | if (checksum > bits_in_uv) |
1424 | cdouble += (NV)aquad; | |
1425 | else | |
92d41999 | 1426 | cuv += aquad; |
a6ec74c1 | 1427 | } |
a6ec74c1 | 1428 | } |
fa8ec7c1 | 1429 | else { |
49704364 | 1430 | if (len && unpack_only_one) |
c8f824eb | 1431 | len = 1; |
fa8ec7c1 NC |
1432 | EXTEND(SP, len); |
1433 | EXTEND_MORTAL(len); | |
1434 | while (len-- > 0) { | |
1435 | if (s + sizeof(Quad_t) > strend) | |
1436 | aquad = 0; | |
1437 | else { | |
92d41999 JH |
1438 | Copy(s, &aquad, 1, Quad_t); |
1439 | s += sizeof(Quad_t); | |
fa8ec7c1 NC |
1440 | } |
1441 | sv = NEWSV(42, 0); | |
1442 | if (aquad >= IV_MIN && aquad <= IV_MAX) | |
92d41999 | 1443 | sv_setiv(sv, (IV)aquad); |
fa8ec7c1 NC |
1444 | else |
1445 | sv_setnv(sv, (NV)aquad); | |
1446 | PUSHs(sv_2mortal(sv)); | |
1447 | } | |
1448 | } | |
a6ec74c1 JH |
1449 | break; |
1450 | case 'Q': | |
206947d2 | 1451 | along = (strend - s) / sizeof(Uquad_t); |
a6ec74c1 JH |
1452 | if (len > along) |
1453 | len = along; | |
fa8ec7c1 NC |
1454 | if (checksum) { |
1455 | while (len-- > 0) { | |
a6ec74c1 JH |
1456 | Copy(s, &auquad, 1, Uquad_t); |
1457 | s += sizeof(Uquad_t); | |
fa8ec7c1 NC |
1458 | if (checksum > bits_in_uv) |
1459 | cdouble += (NV)auquad; | |
1460 | else | |
92d41999 | 1461 | cuv += auquad; |
a6ec74c1 | 1462 | } |
a6ec74c1 | 1463 | } |
fa8ec7c1 | 1464 | else { |
49704364 | 1465 | if (len && unpack_only_one) |
c8f824eb | 1466 | len = 1; |
fa8ec7c1 NC |
1467 | EXTEND(SP, len); |
1468 | EXTEND_MORTAL(len); | |
1469 | while (len-- > 0) { | |
1470 | if (s + sizeof(Uquad_t) > strend) | |
1471 | auquad = 0; | |
1472 | else { | |
1473 | Copy(s, &auquad, 1, Uquad_t); | |
1474 | s += sizeof(Uquad_t); | |
1475 | } | |
1476 | sv = NEWSV(43, 0); | |
1477 | if (auquad <= UV_MAX) | |
1478 | sv_setuv(sv, (UV)auquad); | |
1479 | else | |
1480 | sv_setnv(sv, (NV)auquad); | |
1481 | PUSHs(sv_2mortal(sv)); | |
1482 | } | |
1483 | } | |
a6ec74c1 JH |
1484 | break; |
1485 | #endif | |
1486 | /* float and double added gnb@melba.bby.oz.au 22/11/89 */ | |
1487 | case 'f': | |
a6ec74c1 JH |
1488 | along = (strend - s) / sizeof(float); |
1489 | if (len > along) | |
1490 | len = along; | |
1491 | if (checksum) { | |
1492 | while (len-- > 0) { | |
1493 | Copy(s, &afloat, 1, float); | |
1494 | s += sizeof(float); | |
1495 | cdouble += afloat; | |
1496 | } | |
1497 | } | |
1498 | else { | |
49704364 | 1499 | if (len && unpack_only_one) |
c8f824eb | 1500 | len = 1; |
a6ec74c1 JH |
1501 | EXTEND(SP, len); |
1502 | EXTEND_MORTAL(len); | |
1503 | while (len-- > 0) { | |
1504 | Copy(s, &afloat, 1, float); | |
1505 | s += sizeof(float); | |
1506 | sv = NEWSV(47, 0); | |
1507 | sv_setnv(sv, (NV)afloat); | |
1508 | PUSHs(sv_2mortal(sv)); | |
1509 | } | |
1510 | } | |
1511 | break; | |
1512 | case 'd': | |
a6ec74c1 JH |
1513 | along = (strend - s) / sizeof(double); |
1514 | if (len > along) | |
1515 | len = along; | |
1516 | if (checksum) { | |
1517 | while (len-- > 0) { | |
1518 | Copy(s, &adouble, 1, double); | |
1519 | s += sizeof(double); | |
1520 | cdouble += adouble; | |
1521 | } | |
1522 | } | |
1523 | else { | |
49704364 | 1524 | if (len && unpack_only_one) |
c8f824eb | 1525 | len = 1; |
a6ec74c1 JH |
1526 | EXTEND(SP, len); |
1527 | EXTEND_MORTAL(len); | |
1528 | while (len-- > 0) { | |
1529 | Copy(s, &adouble, 1, double); | |
1530 | s += sizeof(double); | |
1531 | sv = NEWSV(48, 0); | |
1532 | sv_setnv(sv, (NV)adouble); | |
1533 | PUSHs(sv_2mortal(sv)); | |
1534 | } | |
1535 | } | |
1536 | break; | |
92d41999 JH |
1537 | case 'F': |
1538 | along = (strend - s) / NVSIZE; | |
1539 | if (len > along) | |
1540 | len = along; | |
1541 | if (checksum) { | |
1542 | while (len-- > 0) { | |
1543 | Copy(s, &anv, 1, NV); | |
1544 | s += NVSIZE; | |
1545 | cdouble += anv; | |
1546 | } | |
1547 | } | |
1548 | else { | |
49704364 | 1549 | if (len && unpack_only_one) |
c8f824eb | 1550 | len = 1; |
92d41999 JH |
1551 | EXTEND(SP, len); |
1552 | EXTEND_MORTAL(len); | |
1553 | while (len-- > 0) { | |
1554 | Copy(s, &anv, 1, NV); | |
1555 | s += NVSIZE; | |
1556 | sv = NEWSV(48, 0); | |
1557 | sv_setnv(sv, anv); | |
1558 | PUSHs(sv_2mortal(sv)); | |
1559 | } | |
1560 | } | |
1561 | break; | |
1562 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) | |
1563 | case 'D': | |
1564 | along = (strend - s) / LONG_DOUBLESIZE; | |
1565 | if (len > along) | |
1566 | len = along; | |
1567 | if (checksum) { | |
1568 | while (len-- > 0) { | |
1569 | Copy(s, &aldouble, 1, long double); | |
1570 | s += LONG_DOUBLESIZE; | |
1571 | cdouble += aldouble; | |
1572 | } | |
1573 | } | |
1574 | else { | |
49704364 | 1575 | if (len && unpack_only_one) |
c8f824eb | 1576 | len = 1; |
92d41999 JH |
1577 | EXTEND(SP, len); |
1578 | EXTEND_MORTAL(len); | |
1579 | while (len-- > 0) { | |
1580 | Copy(s, &aldouble, 1, long double); | |
1581 | s += LONG_DOUBLESIZE; | |
1582 | sv = NEWSV(48, 0); | |
1583 | sv_setnv(sv, (NV)aldouble); | |
1584 | PUSHs(sv_2mortal(sv)); | |
1585 | } | |
1586 | } | |
1587 | break; | |
1588 | #endif | |
a6ec74c1 JH |
1589 | case 'u': |
1590 | /* MKS: | |
1591 | * Initialise the decode mapping. By using a table driven | |
1592 | * algorithm, the code will be character-set independent | |
1593 | * (and just as fast as doing character arithmetic) | |
1594 | */ | |
1595 | if (PL_uudmap['M'] == 0) { | |
1596 | int i; | |
1597 | ||
1598 | for (i = 0; i < sizeof(PL_uuemap); i += 1) | |
1599 | PL_uudmap[(U8)PL_uuemap[i]] = i; | |
1600 | /* | |
1601 | * Because ' ' and '`' map to the same value, | |
1602 | * we need to decode them both the same. | |
1603 | */ | |
1604 | PL_uudmap[' '] = 0; | |
1605 | } | |
1606 | ||
1607 | along = (strend - s) * 3 / 4; | |
1608 | sv = NEWSV(42, along); | |
1609 | if (along) | |
1610 | SvPOK_on(sv); | |
1611 | while (s < strend && *s > ' ' && ISUUCHAR(*s)) { | |
1612 | I32 a, b, c, d; | |
1613 | char hunk[4]; | |
1614 | ||
1615 | hunk[3] = '\0'; | |
1616 | len = PL_uudmap[*(U8*)s++] & 077; | |
1617 | while (len > 0) { | |
1618 | if (s < strend && ISUUCHAR(*s)) | |
1619 | a = PL_uudmap[*(U8*)s++] & 077; | |
1620 | else | |
1621 | a = 0; | |
1622 | if (s < strend && ISUUCHAR(*s)) | |
1623 | b = PL_uudmap[*(U8*)s++] & 077; | |
1624 | else | |
1625 | b = 0; | |
1626 | if (s < strend && ISUUCHAR(*s)) | |
1627 | c = PL_uudmap[*(U8*)s++] & 077; | |
1628 | else | |
1629 | c = 0; | |
1630 | if (s < strend && ISUUCHAR(*s)) | |
1631 | d = PL_uudmap[*(U8*)s++] & 077; | |
1632 | else | |
1633 | d = 0; | |
eb160463 GS |
1634 | hunk[0] = (char)((a << 2) | (b >> 4)); |
1635 | hunk[1] = (char)((b << 4) | (c >> 2)); | |
1636 | hunk[2] = (char)((c << 6) | d); | |
a6ec74c1 JH |
1637 | sv_catpvn(sv, hunk, (len > 3) ? 3 : len); |
1638 | len -= 3; | |
1639 | } | |
1640 | if (*s == '\n') | |
1641 | s++; | |
92aa5668 JH |
1642 | else /* possible checksum byte */ |
1643 | if (s + 1 < strend && s[1] == '\n') | |
1644 | s += 2; | |
a6ec74c1 JH |
1645 | } |
1646 | XPUSHs(sv_2mortal(sv)); | |
1647 | break; | |
1648 | } | |
49704364 | 1649 | |
a6ec74c1 JH |
1650 | if (checksum) { |
1651 | sv = NEWSV(42, 0); | |
1652 | if (strchr("fFdD", datumtype) || | |
92d41999 | 1653 | (checksum > bits_in_uv && |
49704364 | 1654 | strchr("csSiIlLnNUvVqQjJ", datumtype&0xFF)) ) { |
a6ec74c1 JH |
1655 | NV trouble; |
1656 | ||
fa8ec7c1 | 1657 | adouble = (NV) (1 << (checksum & 15)); |
a6ec74c1 JH |
1658 | while (checksum >= 16) { |
1659 | checksum -= 16; | |
1660 | adouble *= 65536.0; | |
1661 | } | |
a6ec74c1 JH |
1662 | while (cdouble < 0.0) |
1663 | cdouble += adouble; | |
1664 | cdouble = Perl_modf(cdouble / adouble, &trouble) * adouble; | |
1665 | sv_setnv(sv, cdouble); | |
1666 | } | |
1667 | else { | |
fa8ec7c1 NC |
1668 | if (checksum < bits_in_uv) { |
1669 | UV mask = ((UV)1 << checksum) - 1; | |
92d41999 | 1670 | cuv &= mask; |
a6ec74c1 | 1671 | } |
92d41999 | 1672 | sv_setuv(sv, cuv); |
a6ec74c1 JH |
1673 | } |
1674 | XPUSHs(sv_2mortal(sv)); | |
1675 | checksum = 0; | |
1676 | } | |
49704364 WL |
1677 | |
1678 | if (symptr->flags & FLAG_SLASH){ | |
1679 | if (SP - PL_stack_base - start_sp_offset <= 0) | |
1680 | Perl_croak(aTHX_ "'/' must follow a numeric type in unpack"); | |
1681 | if( next_symbol(symptr) ){ | |
1682 | if( symptr->howlen == e_number ) | |
1683 | Perl_croak(aTHX_ "Count after length/code in unpack" ); | |
1684 | if( beyond ){ | |
1685 | /* ...end of char buffer then no decent length available */ | |
1686 | Perl_croak(aTHX_ "length/code after end of string in unpack" ); | |
1687 | } else { | |
1688 | /* take top of stack (hope it's numeric) */ | |
1689 | len = POPi; | |
1690 | if( len < 0 ) | |
1691 | Perl_croak(aTHX_ "Negative '/' count in unpack" ); | |
1692 | } | |
1693 | } else { | |
1694 | Perl_croak(aTHX_ "Code missing after '/' in unpack" ); | |
1695 | } | |
1696 | datumtype = symptr->code; | |
1697 | goto redo_switch; | |
1698 | } | |
a6ec74c1 | 1699 | } |
49704364 | 1700 | |
18529408 IZ |
1701 | if (new_s) |
1702 | *new_s = s; | |
1703 | PUTBACK; | |
1704 | return SP - PL_stack_base - start_sp_offset; | |
1705 | } | |
1706 | ||
1707 | PP(pp_unpack) | |
1708 | { | |
1709 | dSP; | |
13dcffc6 CS |
1710 | SV *right = (MAXARG > 1) ? POPs : GvSV(PL_defgv); |
1711 | SV *left = POPs; | |
18529408 IZ |
1712 | I32 gimme = GIMME_V; |
1713 | STRLEN llen; | |
1714 | STRLEN rlen; | |
1715 | register char *pat = SvPV(left, llen); | |
1716 | #ifdef PACKED_IS_OCTETS | |
1717 | /* Packed side is assumed to be octets - so force downgrade if it | |
1718 | has been UTF-8 encoded by accident | |
1719 | */ | |
1720 | register char *s = SvPVbyte(right, rlen); | |
1721 | #else | |
1722 | register char *s = SvPV(right, rlen); | |
1723 | #endif | |
1724 | char *strend = s + rlen; | |
1725 | register char *patend = pat + llen; | |
1726 | register I32 cnt; | |
1727 | ||
1728 | PUTBACK; | |
7accc089 | 1729 | cnt = unpackstring(pat, patend, s, strend, |
49704364 WL |
1730 | ((gimme == G_SCALAR) ? FLAG_UNPACK_ONLY_ONE : 0) |
1731 | | (DO_UTF8(right) ? FLAG_UNPACK_DO_UTF8 : 0)); | |
1732 | ||
18529408 IZ |
1733 | SPAGAIN; |
1734 | if ( !cnt && gimme == G_SCALAR ) | |
1735 | PUSHs(&PL_sv_undef); | |
a6ec74c1 JH |
1736 | RETURN; |
1737 | } | |
1738 | ||
1739 | STATIC void | |
1740 | S_doencodes(pTHX_ register SV *sv, register char *s, register I32 len) | |
1741 | { | |
1742 | char hunk[5]; | |
1743 | ||
1744 | *hunk = PL_uuemap[len]; | |
1745 | sv_catpvn(sv, hunk, 1); | |
1746 | hunk[4] = '\0'; | |
1747 | while (len > 2) { | |
1748 | hunk[0] = PL_uuemap[(077 & (*s >> 2))]; | |
1749 | hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((s[1] >> 4) & 017)))]; | |
1750 | hunk[2] = PL_uuemap[(077 & (((s[1] << 2) & 074) | ((s[2] >> 6) & 03)))]; | |
1751 | hunk[3] = PL_uuemap[(077 & (s[2] & 077))]; | |
1752 | sv_catpvn(sv, hunk, 4); | |
1753 | s += 3; | |
1754 | len -= 3; | |
1755 | } | |
1756 | if (len > 0) { | |
1757 | char r = (len > 1 ? s[1] : '\0'); | |
1758 | hunk[0] = PL_uuemap[(077 & (*s >> 2))]; | |
1759 | hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((r >> 4) & 017)))]; | |
1760 | hunk[2] = PL_uuemap[(077 & ((r << 2) & 074))]; | |
1761 | hunk[3] = PL_uuemap[0]; | |
1762 | sv_catpvn(sv, hunk, 4); | |
1763 | } | |
1764 | sv_catpvn(sv, "\n", 1); | |
1765 | } | |
1766 | ||
1767 | STATIC SV * | |
1768 | S_is_an_int(pTHX_ char *s, STRLEN l) | |
1769 | { | |
1770 | STRLEN n_a; | |
1771 | SV *result = newSVpvn(s, l); | |
1772 | char *result_c = SvPV(result, n_a); /* convenience */ | |
1773 | char *out = result_c; | |
1774 | bool skip = 1; | |
1775 | bool ignore = 0; | |
1776 | ||
1777 | while (*s) { | |
1778 | switch (*s) { | |
1779 | case ' ': | |
1780 | break; | |
1781 | case '+': | |
1782 | if (!skip) { | |
1783 | SvREFCNT_dec(result); | |
1784 | return (NULL); | |
1785 | } | |
1786 | break; | |
1787 | case '0': | |
1788 | case '1': | |
1789 | case '2': | |
1790 | case '3': | |
1791 | case '4': | |
1792 | case '5': | |
1793 | case '6': | |
1794 | case '7': | |
1795 | case '8': | |
1796 | case '9': | |
1797 | skip = 0; | |
1798 | if (!ignore) { | |
1799 | *(out++) = *s; | |
1800 | } | |
1801 | break; | |
1802 | case '.': | |
1803 | ignore = 1; | |
1804 | break; | |
1805 | default: | |
1806 | SvREFCNT_dec(result); | |
1807 | return (NULL); | |
1808 | } | |
1809 | s++; | |
1810 | } | |
1811 | *(out++) = '\0'; | |
1812 | SvCUR_set(result, out - result_c); | |
1813 | return (result); | |
1814 | } | |
1815 | ||
1816 | /* pnum must be '\0' terminated */ | |
1817 | STATIC int | |
1818 | S_div128(pTHX_ SV *pnum, bool *done) | |
1819 | { | |
1820 | STRLEN len; | |
1821 | char *s = SvPV(pnum, len); | |
1822 | int m = 0; | |
1823 | int r = 0; | |
1824 | char *t = s; | |
1825 | ||
1826 | *done = 1; | |
1827 | while (*t) { | |
1828 | int i; | |
1829 | ||
1830 | i = m * 10 + (*t - '0'); | |
1831 | m = i & 0x7F; | |
1832 | r = (i >> 7); /* r < 10 */ | |
1833 | if (r) { | |
1834 | *done = 0; | |
1835 | } | |
1836 | *(t++) = '0' + r; | |
1837 | } | |
1838 | *(t++) = '\0'; | |
1839 | SvCUR_set(pnum, (STRLEN) (t - s)); | |
1840 | return (m); | |
1841 | } | |
1842 | ||
49704364 | 1843 | |
a6ec74c1 | 1844 | |
18529408 IZ |
1845 | /* |
1846 | =for apidoc pack_cat | |
1847 | ||
7accc089 JH |
1848 | The engine implementing pack() Perl function. Note: parameters next_in_list and |
1849 | flags are not used. This call should not be used; use packlist instead. | |
18529408 IZ |
1850 | |
1851 | =cut */ | |
1852 | ||
49704364 | 1853 | |
18529408 IZ |
1854 | void |
1855 | Perl_pack_cat(pTHX_ SV *cat, char *pat, register char *patend, register SV **beglist, SV **endlist, SV ***next_in_list, U32 flags) | |
a6ec74c1 | 1856 | { |
49704364 WL |
1857 | tempsym_t sym = { 0 }; |
1858 | sym.patptr = pat; | |
1859 | sym.patend = patend; | |
7accc089 JH |
1860 | sym.flags = FLAG_PACK; |
1861 | ||
1862 | (void)pack_rec( cat, &sym, beglist, endlist ); | |
1863 | } | |
1864 | ||
1865 | ||
1866 | /* | |
1867 | =for apidoc packlist | |
1868 | ||
1869 | The engine implementing pack() Perl function. | |
1870 | ||
1871 | =cut */ | |
1872 | ||
1873 | ||
1874 | void | |
1875 | Perl_packlist(pTHX_ SV *cat, char *pat, register char *patend, register SV **beglist, SV **endlist ) | |
1876 | { | |
1877 | tempsym_t sym = { 0 }; | |
1878 | sym.patptr = pat; | |
1879 | sym.patend = patend; | |
1880 | sym.flags = FLAG_PACK; | |
49704364 WL |
1881 | |
1882 | (void)pack_rec( cat, &sym, beglist, endlist ); | |
1883 | } | |
1884 | ||
1885 | ||
1886 | STATIC | |
1887 | SV ** | |
1888 | S_pack_rec(pTHX_ SV *cat, register tempsym_t* symptr, register SV **beglist, SV **endlist ) | |
1889 | { | |
a6ec74c1 JH |
1890 | register I32 items; |
1891 | STRLEN fromlen; | |
49704364 | 1892 | register I32 len = 0; |
a6ec74c1 JH |
1893 | SV *fromstr; |
1894 | /*SUPPRESS 442*/ | |
1895 | static char null10[] = {0,0,0,0,0,0,0,0,0,0}; | |
1896 | static char *space10 = " "; | |
49704364 | 1897 | bool found; |
a6ec74c1 JH |
1898 | |
1899 | /* These must not be in registers: */ | |
1900 | char achar; | |
1901 | I16 ashort; | |
1902 | int aint; | |
1903 | unsigned int auint; | |
1904 | I32 along; | |
1905 | U32 aulong; | |
92d41999 JH |
1906 | IV aiv; |
1907 | UV auv; | |
1908 | NV anv; | |
1909 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) | |
1910 | long double aldouble; | |
1911 | #endif | |
a6ec74c1 JH |
1912 | #ifdef HAS_QUAD |
1913 | Quad_t aquad; | |
1914 | Uquad_t auquad; | |
1915 | #endif | |
1916 | char *aptr; | |
1917 | float afloat; | |
1918 | double adouble; | |
49704364 WL |
1919 | int strrelbeg = SvCUR(cat); |
1920 | tempsym_t lookahead; | |
a6ec74c1 | 1921 | |
18529408 | 1922 | items = endlist - beglist; |
49704364 WL |
1923 | found = next_symbol( symptr ); |
1924 | ||
18529408 | 1925 | #ifndef PACKED_IS_OCTETS |
49704364 | 1926 | if (symptr->level == 0 && found && symptr->code == 'U' ){ |
18529408 | 1927 | SvUTF8_on(cat); |
49704364 | 1928 | } |
18529408 | 1929 | #endif |
49704364 WL |
1930 | |
1931 | while (found) { | |
a6ec74c1 | 1932 | SV *lengthcode = Nullsv; |
18529408 | 1933 | #define NEXTFROM ( lengthcode ? lengthcode : items-- > 0 ? *beglist++ : &PL_sv_no) |
49704364 WL |
1934 | |
1935 | I32 datumtype = symptr->code; | |
1936 | howlen_t howlen; | |
1937 | ||
1938 | switch( howlen = symptr->howlen ){ | |
1939 | case e_no_len: | |
1940 | case e_number: | |
1941 | len = symptr->length; | |
1942 | break; | |
1943 | case e_star: | |
1944 | len = strchr("@Xxu", datumtype) ? 0 : items; | |
1945 | break; | |
1946 | } | |
1947 | ||
1948 | /* Look ahead for next symbol. Do we have code/code? */ | |
1949 | lookahead = *symptr; | |
1950 | found = next_symbol(&lookahead); | |
1951 | if ( symptr->flags & FLAG_SLASH ) { | |
1952 | if (found){ | |
1953 | if ( 0 == strchr( "aAZ", lookahead.code ) || | |
1954 | e_star != lookahead.howlen ) | |
1955 | Perl_croak(aTHX_ "'/' must be followed by 'a*', 'A*' or 'Z*' in pack"); | |
1956 | lengthcode = sv_2mortal(newSViv(sv_len(items > 0 | |
18529408 | 1957 | ? *beglist : &PL_sv_no) |
49704364 WL |
1958 | + (lookahead.code == 'Z' ? 1 : 0))); |
1959 | } else { | |
1960 | Perl_croak(aTHX_ "Code missing after '/' in pack"); | |
1961 | } | |
a6ec74c1 | 1962 | } |
49704364 | 1963 | |
a6ec74c1 JH |
1964 | switch(datumtype) { |
1965 | default: | |
49704364 | 1966 | Perl_croak(aTHX_ "Invalid type '%c' in pack", (int)datumtype); |
a6ec74c1 | 1967 | case '%': |
49704364 | 1968 | Perl_croak(aTHX_ "'%%' may not be used in pack"); |
a6ec74c1 | 1969 | case '@': |
49704364 | 1970 | len += strrelbeg - SvCUR(cat); |
a6ec74c1 JH |
1971 | if (len > 0) |
1972 | goto grow; | |
1973 | len = -len; | |
1974 | if (len > 0) | |
1975 | goto shrink; | |
1976 | break; | |
18529408 IZ |
1977 | case '(': |
1978 | { | |
49704364 WL |
1979 | tempsym_t savsym = *symptr; |
1980 | symptr->patend = savsym.grpend; | |
1981 | symptr->level++; | |
18529408 | 1982 | while (len--) { |
49704364 WL |
1983 | symptr->patptr = savsym.grpbeg; |
1984 | beglist = pack_rec(cat, symptr, beglist, endlist ); | |
1985 | if (savsym.howlen == e_star && beglist == endlist) | |
18529408 IZ |
1986 | break; /* No way to continue */ |
1987 | } | |
49704364 WL |
1988 | lookahead.flags = symptr->flags; |
1989 | *symptr = savsym; | |
18529408 IZ |
1990 | break; |
1991 | } | |
62f95557 IZ |
1992 | case 'X' | TYPE_IS_SHRIEKING: |
1993 | if (!len) /* Avoid division by 0 */ | |
1994 | len = 1; | |
1995 | len = (SvCUR(cat)) % len; | |
1996 | /* FALL THROUGH */ | |
a6ec74c1 JH |
1997 | case 'X': |
1998 | shrink: | |
eb160463 | 1999 | if ((I32)SvCUR(cat) < len) |
49704364 | 2000 | Perl_croak(aTHX_ "'X' outside of string in pack"); |
a6ec74c1 JH |
2001 | SvCUR(cat) -= len; |
2002 | *SvEND(cat) = '\0'; | |
2003 | break; | |
62f95557 IZ |
2004 | case 'x' | TYPE_IS_SHRIEKING: |
2005 | if (!len) /* Avoid division by 0 */ | |
2006 | len = 1; | |
2007 | aint = (SvCUR(cat)) % len; | |
2008 | if (aint) /* Other portable ways? */ | |
2009 | len = len - aint; | |
2010 | else | |
2011 | len = 0; | |
2012 | /* FALL THROUGH */ | |
49704364 | 2013 | |
a6ec74c1 JH |
2014 | case 'x': |
2015 | grow: | |
2016 | while (len >= 10) { | |
2017 | sv_catpvn(cat, null10, 10); | |
2018 | len -= 10; | |
2019 | } | |
2020 | sv_catpvn(cat, null10, len); | |
2021 | break; | |
2022 | case 'A': | |
2023 | case 'Z': | |
2024 | case 'a': | |
2025 | fromstr = NEXTFROM; | |
2026 | aptr = SvPV(fromstr, fromlen); | |
49704364 | 2027 | if (howlen == e_star) { |
a6ec74c1 JH |
2028 | len = fromlen; |
2029 | if (datumtype == 'Z') | |
2030 | ++len; | |
2031 | } | |
eb160463 | 2032 | if ((I32)fromlen >= len) { |
a6ec74c1 JH |
2033 | sv_catpvn(cat, aptr, len); |
2034 | if (datumtype == 'Z') | |
2035 | *(SvEND(cat)-1) = '\0'; | |
2036 | } | |
2037 | else { | |
2038 | sv_catpvn(cat, aptr, fromlen); | |
2039 | len -= fromlen; | |
2040 | if (datumtype == 'A') { | |
2041 | while (len >= 10) { | |
2042 | sv_catpvn(cat, space10, 10); | |
2043 | len -= 10; | |
2044 | } | |
2045 | sv_catpvn(cat, space10, len); | |
2046 | } | |
2047 | else { | |
2048 | while (len >= 10) { | |
2049 | sv_catpvn(cat, null10, 10); | |
2050 | len -= 10; | |
2051 | } | |
2052 | sv_catpvn(cat, null10, len); | |
2053 | } | |
2054 | } | |
2055 | break; | |
2056 | case 'B': | |
2057 | case 'b': | |
2058 | { | |
2059 | register char *str; | |
2060 | I32 saveitems; | |
2061 | ||
2062 | fromstr = NEXTFROM; | |
2063 | saveitems = items; | |
2064 | str = SvPV(fromstr, fromlen); | |
49704364 | 2065 | if (howlen == e_star) |
a6ec74c1 JH |
2066 | len = fromlen; |
2067 | aint = SvCUR(cat); | |
2068 | SvCUR(cat) += (len+7)/8; | |
2069 | SvGROW(cat, SvCUR(cat) + 1); | |
2070 | aptr = SvPVX(cat) + aint; | |
eb160463 | 2071 | if (len > (I32)fromlen) |
a6ec74c1 JH |
2072 | len = fromlen; |
2073 | aint = len; | |
2074 | items = 0; | |
2075 | if (datumtype == 'B') { | |
2076 | for (len = 0; len++ < aint;) { | |
2077 | items |= *str++ & 1; | |
2078 | if (len & 7) | |
2079 | items <<= 1; | |
2080 | else { | |
2081 | *aptr++ = items & 0xff; | |
2082 | items = 0; | |
2083 | } | |
2084 | } | |
2085 | } | |
2086 | else { | |
2087 | for (len = 0; len++ < aint;) { | |
2088 | if (*str++ & 1) | |
2089 | items |= 128; | |
2090 | if (len & 7) | |
2091 | items >>= 1; | |
2092 | else { | |
2093 | *aptr++ = items & 0xff; | |
2094 | items = 0; | |
2095 | } | |
2096 | } | |
2097 | } | |
2098 | if (aint & 7) { | |
2099 | if (datumtype == 'B') | |
2100 | items <<= 7 - (aint & 7); | |
2101 | else | |
2102 | items >>= 7 - (aint & 7); | |
2103 | *aptr++ = items & 0xff; | |
2104 | } | |
2105 | str = SvPVX(cat) + SvCUR(cat); | |
2106 | while (aptr <= str) | |
2107 | *aptr++ = '\0'; | |
2108 | ||
2109 | items = saveitems; | |
2110 | } | |
2111 | break; | |
2112 | case 'H': | |
2113 | case 'h': | |
2114 | { | |
2115 | register char *str; | |
2116 | I32 saveitems; | |
2117 | ||
2118 | fromstr = NEXTFROM; | |
2119 | saveitems = items; | |
2120 | str = SvPV(fromstr, fromlen); | |
49704364 | 2121 | if (howlen == e_star) |
a6ec74c1 JH |
2122 | len = fromlen; |
2123 | aint = SvCUR(cat); | |
2124 | SvCUR(cat) += (len+1)/2; | |
2125 | SvGROW(cat, SvCUR(cat) + 1); | |
2126 | aptr = SvPVX(cat) + aint; | |
eb160463 | 2127 | if (len > (I32)fromlen) |
a6ec74c1 JH |
2128 | len = fromlen; |
2129 | aint = len; | |
2130 | items = 0; | |
2131 | if (datumtype == 'H') { | |
2132 | for (len = 0; len++ < aint;) { | |
2133 | if (isALPHA(*str)) | |
2134 | items |= ((*str++ & 15) + 9) & 15; | |
2135 | else | |
2136 | items |= *str++ & 15; | |
2137 | if (len & 1) | |
2138 | items <<= 4; | |
2139 | else { | |
2140 | *aptr++ = items & 0xff; | |
2141 | items = 0; | |
2142 | } | |
2143 | } | |
2144 | } | |
2145 | else { | |
2146 | for (len = 0; len++ < aint;) { | |
2147 | if (isALPHA(*str)) | |
2148 | items |= (((*str++ & 15) + 9) & 15) << 4; | |
2149 | else | |
2150 | items |= (*str++ & 15) << 4; | |
2151 | if (len & 1) | |
2152 | items >>= 4; | |
2153 | else { | |
2154 | *aptr++ = items & 0xff; | |
2155 | items = 0; | |
2156 | } | |
2157 | } | |
2158 | } | |
2159 | if (aint & 1) | |
2160 | *aptr++ = items & 0xff; | |
2161 | str = SvPVX(cat) + SvCUR(cat); | |
2162 | while (aptr <= str) | |
2163 | *aptr++ = '\0'; | |
2164 | ||
2165 | items = saveitems; | |
2166 | } | |
2167 | break; | |
2168 | case 'C': | |
2169 | case 'c': | |
2170 | while (len-- > 0) { | |
2171 | fromstr = NEXTFROM; | |
2172 | switch (datumtype) { | |
2173 | case 'C': | |
2174 | aint = SvIV(fromstr); | |
2175 | if ((aint < 0 || aint > 255) && | |
2176 | ckWARN(WARN_PACK)) | |
9014280d | 2177 | Perl_warner(aTHX_ packWARN(WARN_PACK), |
49704364 | 2178 | "Character in 'C' format wrapped in pack"); |
a6ec74c1 JH |
2179 | achar = aint & 255; |
2180 | sv_catpvn(cat, &achar, sizeof(char)); | |
2181 | break; | |
2182 | case 'c': | |
2183 | aint = SvIV(fromstr); | |
2184 | if ((aint < -128 || aint > 127) && | |
2185 | ckWARN(WARN_PACK)) | |
9014280d | 2186 | Perl_warner(aTHX_ packWARN(WARN_PACK), |
49704364 | 2187 | "Character in 'c' format wrapped in pack" ); |
a6ec74c1 JH |
2188 | achar = aint & 255; |
2189 | sv_catpvn(cat, &achar, sizeof(char)); | |
2190 | break; | |
2191 | } | |
2192 | } | |
2193 | break; | |
2194 | case 'U': | |
2195 | while (len-- > 0) { | |
2196 | fromstr = NEXTFROM; | |
e87322b2 | 2197 | auint = UNI_TO_NATIVE(SvUV(fromstr)); |
a6ec74c1 | 2198 | SvGROW(cat, SvCUR(cat) + UTF8_MAXLEN + 1); |
52ea3e69 JH |
2199 | SvCUR_set(cat, |
2200 | (char*)uvchr_to_utf8_flags((U8*)SvEND(cat), | |
2201 | auint, | |
2202 | ckWARN(WARN_UTF8) ? | |
2203 | 0 : UNICODE_ALLOW_ANY) | |
2204 | - SvPVX(cat)); | |
a6ec74c1 JH |
2205 | } |
2206 | *SvEND(cat) = '\0'; | |
2207 | break; | |
2208 | /* Float and double added by gnb@melba.bby.oz.au 22/11/89 */ | |
2209 | case 'f': | |
a6ec74c1 JH |
2210 | while (len-- > 0) { |
2211 | fromstr = NEXTFROM; | |
5cdb9e01 PG |
2212 | #ifdef __VOS__ |
2213 | /* VOS does not automatically map a floating-point overflow | |
2214 | during conversion from double to float into infinity, so we | |
2215 | do it by hand. This code should either be generalized for | |
2216 | any OS that needs it, or removed if and when VOS implements | |
2217 | posix-976 (suggestion to support mapping to infinity). | |
2218 | Paul.Green@stratus.com 02-04-02. */ | |
2219 | if (SvNV(fromstr) > FLT_MAX) | |
2220 | afloat = _float_constants[0]; /* single prec. inf. */ | |
2221 | else if (SvNV(fromstr) < -FLT_MAX) | |
2222 | afloat = _float_constants[0]; /* single prec. inf. */ | |
2223 | else afloat = (float)SvNV(fromstr); | |
2224 | #else | |
baf3cf9c CB |
2225 | # if defined(VMS) && !defined(__IEEE_FP) |
2226 | /* IEEE fp overflow shenanigans are unavailable on VAX and optional | |
2227 | * on Alpha; fake it if we don't have them. | |
2228 | */ | |
2229 | if (SvNV(fromstr) > FLT_MAX) | |
2230 | afloat = FLT_MAX; | |
2231 | else if (SvNV(fromstr) < -FLT_MAX) | |
2232 | afloat = -FLT_MAX; | |
2233 | else afloat = (float)SvNV(fromstr); | |
2234 | # else | |
a6ec74c1 | 2235 | afloat = (float)SvNV(fromstr); |
baf3cf9c | 2236 | # endif |
5cdb9e01 | 2237 | #endif |
a6ec74c1 JH |
2238 | sv_catpvn(cat, (char *)&afloat, sizeof (float)); |
2239 | } | |
2240 | break; | |
2241 | case 'd': | |
a6ec74c1 JH |
2242 | while (len-- > 0) { |
2243 | fromstr = NEXTFROM; | |
5cdb9e01 PG |
2244 | #ifdef __VOS__ |
2245 | /* VOS does not automatically map a floating-point overflow | |
2246 | during conversion from long double to double into infinity, | |
2247 | so we do it by hand. This code should either be generalized | |
2248 | for any OS that needs it, or removed if and when VOS | |
2249 | implements posix-976 (suggestion to support mapping to | |
2250 | infinity). Paul.Green@stratus.com 02-04-02. */ | |
2251 | if (SvNV(fromstr) > DBL_MAX) | |
2252 | adouble = _double_constants[0]; /* double prec. inf. */ | |
2253 | else if (SvNV(fromstr) < -DBL_MAX) | |
2254 | adouble = _double_constants[0]; /* double prec. inf. */ | |
2255 | else adouble = (double)SvNV(fromstr); | |
2256 | #else | |
baf3cf9c CB |
2257 | # if defined(VMS) && !defined(__IEEE_FP) |
2258 | /* IEEE fp overflow shenanigans are unavailable on VAX and optional | |
2259 | * on Alpha; fake it if we don't have them. | |
2260 | */ | |
2261 | if (SvNV(fromstr) > DBL_MAX) | |
2262 | adouble = DBL_MAX; | |
2263 | else if (SvNV(fromstr) < -DBL_MAX) | |
2264 | adouble = -DBL_MAX; | |
2265 | else adouble = (double)SvNV(fromstr); | |
2266 | # else | |
a6ec74c1 | 2267 | adouble = (double)SvNV(fromstr); |
baf3cf9c | 2268 | # endif |
5cdb9e01 | 2269 | #endif |
a6ec74c1 JH |
2270 | sv_catpvn(cat, (char *)&adouble, sizeof (double)); |
2271 | } | |
2272 | break; | |
92d41999 JH |
2273 | case 'F': |
2274 | while (len-- > 0) { | |
2275 | fromstr = NEXTFROM; | |
2276 | anv = SvNV(fromstr); | |
2277 | sv_catpvn(cat, (char *)&anv, NVSIZE); | |
2278 | } | |
2279 | break; | |
2280 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) | |
2281 | case 'D': | |
2282 | while (len-- > 0) { | |
2283 | fromstr = NEXTFROM; | |
2284 | aldouble = (long double)SvNV(fromstr); | |
2285 | sv_catpvn(cat, (char *)&aldouble, LONG_DOUBLESIZE); | |
2286 | } | |
2287 | break; | |
2288 | #endif | |
a6ec74c1 JH |
2289 | case 'n': |
2290 | while (len-- > 0) { | |
2291 | fromstr = NEXTFROM; | |
2292 | ashort = (I16)SvIV(fromstr); | |
2293 | #ifdef HAS_HTONS | |
2294 | ashort = PerlSock_htons(ashort); | |
2295 | #endif | |
2296 | CAT16(cat, &ashort); | |
2297 | } | |
2298 | break; | |
2299 | case 'v': | |
2300 | while (len-- > 0) { | |
2301 | fromstr = NEXTFROM; | |
2302 | ashort = (I16)SvIV(fromstr); | |
2303 | #ifdef HAS_HTOVS | |
2304 | ashort = htovs(ashort); | |
2305 | #endif | |
2306 | CAT16(cat, &ashort); | |
2307 | } | |
2308 | break; | |
49704364 | 2309 | case 'S' | TYPE_IS_SHRIEKING: |
a6ec74c1 | 2310 | #if SHORTSIZE != SIZE16 |
49704364 | 2311 | { |
a6ec74c1 JH |
2312 | unsigned short aushort; |
2313 | ||
2314 | while (len-- > 0) { | |
2315 | fromstr = NEXTFROM; | |
2316 | aushort = SvUV(fromstr); | |
2317 | sv_catpvn(cat, (char *)&aushort, sizeof(unsigned short)); | |
2318 | } | |
49704364 WL |
2319 | } |
2320 | break; | |
2321 | #else | |
2322 | /* Fall through! */ | |
a6ec74c1 | 2323 | #endif |
49704364 | 2324 | case 'S': |
a6ec74c1 JH |
2325 | { |
2326 | U16 aushort; | |
2327 | ||
2328 | while (len-- > 0) { | |
2329 | fromstr = NEXTFROM; | |
2330 | aushort = (U16)SvUV(fromstr); | |
2331 | CAT16(cat, &aushort); | |
2332 | } | |
2333 | ||
2334 | } | |
2335 | break; | |
49704364 | 2336 | case 's' | TYPE_IS_SHRIEKING: |
a6ec74c1 | 2337 | #if SHORTSIZE != SIZE16 |
49704364 | 2338 | { |
a6ec74c1 JH |
2339 | short ashort; |
2340 | ||
2341 | while (len-- > 0) { | |
2342 | fromstr = NEXTFROM; | |
2343 | ashort = SvIV(fromstr); | |
2344 | sv_catpvn(cat, (char *)&ashort, sizeof(short)); | |
2345 | } | |
2346 | } | |
49704364 WL |
2347 | break; |
2348 | #else | |
2349 | /* Fall through! */ | |
a6ec74c1 | 2350 | #endif |
49704364 WL |
2351 | case 's': |
2352 | while (len-- > 0) { | |
2353 | fromstr = NEXTFROM; | |
2354 | ashort = (I16)SvIV(fromstr); | |
2355 | CAT16(cat, &ashort); | |
a6ec74c1 JH |
2356 | } |
2357 | break; | |
2358 | case 'I': | |
49704364 | 2359 | case 'I' | TYPE_IS_SHRIEKING: |
a6ec74c1 JH |
2360 | while (len-- > 0) { |
2361 | fromstr = NEXTFROM; | |
2362 | auint = SvUV(fromstr); | |
2363 | sv_catpvn(cat, (char*)&auint, sizeof(unsigned int)); | |
2364 | } | |
2365 | break; | |
92d41999 JH |
2366 | case 'j': |
2367 | while (len-- > 0) { | |
2368 | fromstr = NEXTFROM; | |
2369 | aiv = SvIV(fromstr); | |
2370 | sv_catpvn(cat, (char*)&aiv, IVSIZE); | |
2371 | } | |
2372 | break; | |
2373 | case 'J': | |
2374 | while (len-- > 0) { | |
2375 | fromstr = NEXTFROM; | |
2376 | auv = SvUV(fromstr); | |
2377 | sv_catpvn(cat, (char*)&auv, UVSIZE); | |
2378 | } | |
2379 | break; | |
a6ec74c1 JH |
2380 | case 'w': |
2381 | while (len-- > 0) { | |
2382 | fromstr = NEXTFROM; | |
15e9f109 | 2383 | anv = SvNV(fromstr); |
a6ec74c1 | 2384 | |
15e9f109 | 2385 | if (anv < 0) |
49704364 | 2386 | Perl_croak(aTHX_ "Cannot compress negative numbers in pack"); |
a6ec74c1 | 2387 | |
196b62db NC |
2388 | /* 0xFFFFFFFFFFFFFFFF may cast to 18446744073709551616.0, |
2389 | which is == UV_MAX_P1. IOK is fine (instead of UV_only), as | |
2390 | any negative IVs will have already been got by the croak() | |
2391 | above. IOK is untrue for fractions, so we test them | |
2392 | against UV_MAX_P1. */ | |
15e9f109 | 2393 | if (SvIOK(fromstr) || anv < UV_MAX_P1) |
a6ec74c1 | 2394 | { |
7c1b502b | 2395 | char buf[(sizeof(UV)*8)/7+1]; |
a6ec74c1 | 2396 | char *in = buf + sizeof(buf); |
196b62db | 2397 | UV auv = SvUV(fromstr); |
a6ec74c1 JH |
2398 | |
2399 | do { | |
eb160463 | 2400 | *--in = (char)((auv & 0x7f) | 0x80); |
a6ec74c1 JH |
2401 | auv >>= 7; |
2402 | } while (auv); | |
2403 | buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */ | |
2404 | sv_catpvn(cat, in, (buf + sizeof(buf)) - in); | |
2405 | } | |
2406 | else if (SvPOKp(fromstr)) { /* decimal string arithmetics */ | |
2407 | char *from, *result, *in; | |
2408 | SV *norm; | |
2409 | STRLEN len; | |
2410 | bool done; | |
2411 | ||
2412 | /* Copy string and check for compliance */ | |
2413 | from = SvPV(fromstr, len); | |
2414 | if ((norm = is_an_int(from, len)) == NULL) | |
49704364 | 2415 | Perl_croak(aTHX_ "Can only compress unsigned integers in pack"); |
a6ec74c1 JH |
2416 | |
2417 | New('w', result, len, char); | |
2418 | in = result + len; | |
2419 | done = FALSE; | |
2420 | while (!done) | |
2421 | *--in = div128(norm, &done) | 0x80; | |
2422 | result[len - 1] &= 0x7F; /* clear continue bit */ | |
2423 | sv_catpvn(cat, in, (result + len) - in); | |
2424 | Safefree(result); | |
2425 | SvREFCNT_dec(norm); /* free norm */ | |
2426 | } | |
2427 | else if (SvNOKp(fromstr)) { | |
0258719b NC |
2428 | /* 10**NV_MAX_10_EXP is the largest power of 10 |
2429 | so 10**(NV_MAX_10_EXP+1) is definately unrepresentable | |
2430 | given 10**(NV_MAX_10_EXP+1) == 128 ** x solve for x: | |
2431 | x = (NV_MAX_10_EXP+1) * log (10) / log (128) | |
2432 | And with that many bytes only Inf can overflow. | |
2433 | */ | |
2434 | #ifdef NV_MAX_10_EXP | |
2435 | char buf[1 + (int)((NV_MAX_10_EXP + 1) * 0.47456)]; | |
2436 | #else | |
2437 | char buf[1 + (int)((308 + 1) * 0.47456)]; | |
2438 | #endif | |
a6ec74c1 JH |
2439 | char *in = buf + sizeof(buf); |
2440 | ||
15e9f109 | 2441 | anv = Perl_floor(anv); |
a6ec74c1 | 2442 | do { |
15e9f109 | 2443 | NV next = Perl_floor(anv / 128); |
a6ec74c1 | 2444 | if (in <= buf) /* this cannot happen ;-) */ |
49704364 | 2445 | Perl_croak(aTHX_ "Cannot compress integer in pack"); |
0258719b | 2446 | *--in = (unsigned char)(anv - (next * 128)) | 0x80; |
15e9f109 NC |
2447 | anv = next; |
2448 | } while (anv > 0); | |
a6ec74c1 JH |
2449 | buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */ |
2450 | sv_catpvn(cat, in, (buf + sizeof(buf)) - in); | |
2451 | } | |
735b914b JH |
2452 | else { |
2453 | char *from, *result, *in; | |
2454 | SV *norm; | |
2455 | STRLEN len; | |
2456 | bool done; | |
2457 | ||
2458 | /* Copy string and check for compliance */ | |
2459 | from = SvPV(fromstr, len); | |
2460 | if ((norm = is_an_int(from, len)) == NULL) | |
49704364 | 2461 | Perl_croak(aTHX_ "Can only compress unsigned integers in pack"); |
735b914b JH |
2462 | |
2463 | New('w', result, len, char); | |
2464 | in = result + len; | |
2465 | done = FALSE; | |
2466 | while (!done) | |
2467 | *--in = div128(norm, &done) | 0x80; | |
2468 | result[len - 1] &= 0x7F; /* clear continue bit */ | |
2469 | sv_catpvn(cat, in, (result + len) - in); | |
2470 | Safefree(result); | |
2471 | SvREFCNT_dec(norm); /* free norm */ | |
2472 | } | |
a6ec74c1 JH |
2473 | } |
2474 | break; | |
2475 | case 'i': | |
49704364 | 2476 | case 'i' | TYPE_IS_SHRIEKING: |
a6ec74c1 JH |
2477 | while (len-- > 0) { |
2478 | fromstr = NEXTFROM; | |
2479 | aint = SvIV(fromstr); | |
2480 | sv_catpvn(cat, (char*)&aint, sizeof(int)); | |
2481 | } | |
2482 | break; | |
2483 | case 'N': | |
2484 | while (len-- > 0) { | |
2485 | fromstr = NEXTFROM; | |
2486 | aulong = SvUV(fromstr); | |
2487 | #ifdef HAS_HTONL | |
2488 | aulong = PerlSock_htonl(aulong); | |
2489 | #endif | |
2490 | CAT32(cat, &aulong); | |
2491 | } | |
2492 | break; | |
2493 | case 'V': | |
2494 | while (len-- > 0) { | |
2495 | fromstr = NEXTFROM; | |
2496 | aulong = SvUV(fromstr); | |
2497 | #ifdef HAS_HTOVL | |
2498 | aulong = htovl(aulong); | |
2499 | #endif | |
2500 | CAT32(cat, &aulong); | |
2501 | } | |
2502 | break; | |
49704364 | 2503 | case 'L' | TYPE_IS_SHRIEKING: |
a6ec74c1 | 2504 | #if LONGSIZE != SIZE32 |
49704364 | 2505 | { |
a6ec74c1 JH |
2506 | unsigned long aulong; |
2507 | ||
2508 | while (len-- > 0) { | |
2509 | fromstr = NEXTFROM; | |
2510 | aulong = SvUV(fromstr); | |
2511 | sv_catpvn(cat, (char *)&aulong, sizeof(unsigned long)); | |
2512 | } | |
2513 | } | |
49704364 WL |
2514 | break; |
2515 | #else | |
2516 | /* Fall though! */ | |
a6ec74c1 | 2517 | #endif |
49704364 | 2518 | case 'L': |
a6ec74c1 JH |
2519 | { |
2520 | while (len-- > 0) { | |
2521 | fromstr = NEXTFROM; | |
2522 | aulong = SvUV(fromstr); | |
2523 | CAT32(cat, &aulong); | |
2524 | } | |
2525 | } | |
2526 | break; | |
49704364 | 2527 | case 'l' | TYPE_IS_SHRIEKING: |
a6ec74c1 | 2528 | #if LONGSIZE != SIZE32 |
49704364 | 2529 | { |
a6ec74c1 JH |
2530 | long along; |
2531 | ||
2532 | while (len-- > 0) { | |
2533 | fromstr = NEXTFROM; | |
2534 | along = SvIV(fromstr); | |
2535 | sv_catpvn(cat, (char *)&along, sizeof(long)); | |
2536 | } | |
2537 | } | |
49704364 WL |
2538 | break; |
2539 | #else | |
2540 | /* Fall though! */ | |
a6ec74c1 | 2541 | #endif |
49704364 WL |
2542 | case 'l': |
2543 | while (len-- > 0) { | |
2544 | fromstr = NEXTFROM; | |
2545 | along = SvIV(fromstr); | |
2546 | CAT32(cat, &along); | |
a6ec74c1 JH |
2547 | } |
2548 | break; | |
2549 | #ifdef HAS_QUAD | |
2550 | case 'Q': | |
2551 | while (len-- > 0) { | |
2552 | fromstr = NEXTFROM; | |
2553 | auquad = (Uquad_t)SvUV(fromstr); | |
2554 | sv_catpvn(cat, (char*)&auquad, sizeof(Uquad_t)); | |
2555 | } | |
2556 | break; | |
2557 | case 'q': | |
2558 | while (len-- > 0) { | |
2559 | fromstr = NEXTFROM; | |
2560 | aquad = (Quad_t)SvIV(fromstr); | |
2561 | sv_catpvn(cat, (char*)&aquad, sizeof(Quad_t)); | |
2562 | } | |
2563 | break; | |
2564 | #endif | |
2565 | case 'P': | |
2566 | len = 1; /* assume SV is correct length */ | |
49704364 | 2567 | /* Fall through! */ |
a6ec74c1 JH |
2568 | case 'p': |
2569 | while (len-- > 0) { | |
2570 | fromstr = NEXTFROM; | |
2571 | if (fromstr == &PL_sv_undef) | |
2572 | aptr = NULL; | |
2573 | else { | |
2574 | STRLEN n_a; | |
2575 | /* XXX better yet, could spirit away the string to | |
2576 | * a safe spot and hang on to it until the result | |
2577 | * of pack() (and all copies of the result) are | |
2578 | * gone. | |
2579 | */ | |
2580 | if (ckWARN(WARN_PACK) && (SvTEMP(fromstr) | |
2581 | || (SvPADTMP(fromstr) | |
2582 | && !SvREADONLY(fromstr)))) | |
2583 | { | |
9014280d | 2584 | Perl_warner(aTHX_ packWARN(WARN_PACK), |
a6ec74c1 JH |
2585 | "Attempt to pack pointer to temporary value"); |
2586 | } | |
2587 | if (SvPOK(fromstr) || SvNIOK(fromstr)) | |
2588 | aptr = SvPV(fromstr,n_a); | |
2589 | else | |
2590 | aptr = SvPV_force(fromstr,n_a); | |
2591 | } | |
2592 | sv_catpvn(cat, (char*)&aptr, sizeof(char*)); | |
2593 | } | |
2594 | break; | |
2595 | case 'u': | |
2596 | fromstr = NEXTFROM; | |
2597 | aptr = SvPV(fromstr, fromlen); | |
2598 | SvGROW(cat, fromlen * 4 / 3); | |
19c9db5e | 2599 | if (len <= 2) |
a6ec74c1 JH |
2600 | len = 45; |
2601 | else | |
2602 | len = len / 3 * 3; | |
2603 | while (fromlen > 0) { | |
2604 | I32 todo; | |
2605 | ||
eb160463 | 2606 | if ((I32)fromlen > len) |
a6ec74c1 JH |
2607 | todo = len; |
2608 | else | |
2609 | todo = fromlen; | |
2610 | doencodes(cat, aptr, todo); | |
2611 | fromlen -= todo; | |
2612 | aptr += todo; | |
2613 | } | |
2614 | break; | |
2615 | } | |
49704364 | 2616 | *symptr = lookahead; |
a6ec74c1 | 2617 | } |
49704364 | 2618 | return beglist; |
18529408 IZ |
2619 | } |
2620 | #undef NEXTFROM | |
2621 | ||
2622 | ||
2623 | PP(pp_pack) | |
2624 | { | |
2625 | dSP; dMARK; dORIGMARK; dTARGET; | |
2626 | register SV *cat = TARG; | |
2627 | STRLEN fromlen; | |
2628 | register char *pat = SvPVx(*++MARK, fromlen); | |
2629 | register char *patend = pat + fromlen; | |
2630 | ||
2631 | MARK++; | |
2632 | sv_setpvn(cat, "", 0); | |
2633 | ||
7accc089 | 2634 | packlist(cat, pat, patend, MARK, SP + 1); |
18529408 | 2635 | |
a6ec74c1 JH |
2636 | SvSETMAGIC(cat); |
2637 | SP = ORIGMARK; | |
2638 | PUSHs(cat); | |
2639 | RETURN; | |
2640 | } | |
a6ec74c1 | 2641 |