Commit | Line | Data |
a6ec74c1 |
1 | /* pp_pack.c |
2 | * |
4bb101f2 |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
b5f8cc5c |
4 | * 2000, 2001, 2002, 2003, 2004, by Larry Wall and others |
a6ec74c1 |
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 |
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 |
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 |
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 |
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 |
118 | *(t--) = '0' + (char)(i % 10); |
119 | m = (char)(i / 10); |
a6ec74c1 |
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 |
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 |
145 | int star; |
146 | |
206947d2 |
147 | register int size; |
148 | |
49704364 |
149 | while (next_symbol(symptr)) { |
206947d2 |
150 | |
49704364 |
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 |
164 | Perl_croak(aTHX_ "Invalid type '%c' in %s", |
165 | (int)symptr->code, |
166 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); |
206947d2 |
167 | case '@': |
168 | case '/': |
169 | case 'U': /* XXXX Is it correct? */ |
170 | case 'w': |
171 | case 'u': |
49704364 |
172 | Perl_croak(aTHX_ "Within []-length '%c' not allowed in %s", |
173 | (int)symptr->code, |
174 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); |
206947d2 |
175 | case '%': |
176 | size = 0; |
177 | break; |
178 | case '(': |
179 | { |
49704364 |
180 | tempsym_t savsym = *symptr; |
181 | symptr->patptr = savsym.grpbeg; |
182 | symptr->patend = savsym.grpend; |
62f95557 |
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 |
187 | size = measure_struct(symptr); |
188 | *symptr = savsym; |
206947d2 |
189 | break; |
190 | } |
62f95557 |
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 |
197 | case 'X': |
198 | size = -1; |
199 | if (total < len) |
49704364 |
200 | Perl_croak(aTHX_ "'X' outside of string in %s", |
201 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); |
206947d2 |
202 | break; |
62f95557 |
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 |
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 |
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 |
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 |
068bd2e7 |
247 | case 'v' | TYPE_IS_SHRIEKING: |
248 | case 'n' | TYPE_IS_SHRIEKING: |
206947d2 |
249 | case 'v': |
250 | case 'n': |
251 | case 'S': |
206947d2 |
252 | size = SIZE16; |
206947d2 |
253 | break; |
49704364 |
254 | case 'i' | TYPE_IS_SHRIEKING: |
206947d2 |
255 | case 'i': |
256 | size = sizeof(int); |
257 | break; |
49704364 |
258 | case 'I' | TYPE_IS_SHRIEKING: |
206947d2 |
259 | case 'I': |
260 | size = sizeof(unsigned int); |
261 | break; |
92d41999 |
262 | case 'j': |
263 | size = IVSIZE; |
264 | break; |
265 | case 'J': |
266 | size = UVSIZE; |
267 | break; |
49704364 |
268 | case 'l' | TYPE_IS_SHRIEKING: |
269 | #if LONGSIZE != SIZE32 |
270 | size = sizeof(long); |
271 | break; |
272 | #else |
273 | /* FALL THROUGH */ |
274 | #endif |
206947d2 |
275 | case 'l': |
206947d2 |
276 | size = SIZE32; |
49704364 |
277 | break; |
278 | case 'L' | TYPE_IS_SHRIEKING: |
279 | #if LONGSIZE != SIZE32 |
280 | size = sizeof(unsigned long); |
281 | break; |
206947d2 |
282 | #else |
49704364 |
283 | /* FALL THROUGH */ |
206947d2 |
284 | #endif |
068bd2e7 |
285 | case 'V' | TYPE_IS_SHRIEKING: |
286 | case 'N' | TYPE_IS_SHRIEKING: |
206947d2 |
287 | case 'V': |
288 | case 'N': |
289 | case 'L': |
206947d2 |
290 | size = SIZE32; |
206947d2 |
291 | break; |
292 | case 'P': |
293 | len = 1; |
294 | /* FALL THROUGH */ |
295 | case 'p': |
296 | size = sizeof(char*); |
297 | break; |
298 | #ifdef HAS_QUAD |
299 | case 'q': |
300 | size = sizeof(Quad_t); |
301 | break; |
302 | case 'Q': |
303 | size = sizeof(Uquad_t); |
304 | break; |
305 | #endif |
306 | case 'f': |
206947d2 |
307 | size = sizeof(float); |
308 | break; |
309 | case 'd': |
206947d2 |
310 | size = sizeof(double); |
311 | break; |
92d41999 |
312 | case 'F': |
313 | size = NVSIZE; |
314 | break; |
315 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) |
316 | case 'D': |
317 | size = LONG_DOUBLESIZE; |
318 | break; |
319 | #endif |
206947d2 |
320 | } |
321 | total += len * size; |
322 | } |
323 | return total; |
324 | } |
325 | |
49704364 |
326 | |
327 | /* locate matching closing parenthesis or bracket |
328 | * returns char pointer to char after match, or NULL |
329 | */ |
330 | STATIC char * |
331 | S_group_end(pTHX_ register char *patptr, register char *patend, char ender) |
18529408 |
332 | { |
49704364 |
333 | while (patptr < patend) { |
334 | char c = *patptr++; |
335 | |
336 | if (isSPACE(c)) |
337 | continue; |
338 | else if (c == ender) |
339 | return patptr-1; |
340 | else if (c == '#') { |
341 | while (patptr < patend && *patptr != '\n') |
342 | patptr++; |
343 | continue; |
344 | } else if (c == '(') |
345 | patptr = group_end(patptr, patend, ')') + 1; |
346 | else if (c == '[') |
347 | patptr = group_end(patptr, patend, ']') + 1; |
18529408 |
348 | } |
49704364 |
349 | Perl_croak(aTHX_ "No group ending character '%c' found in template", |
350 | ender); |
351 | return 0; |
18529408 |
352 | } |
353 | |
49704364 |
354 | |
355 | /* Convert unsigned decimal number to binary. |
356 | * Expects a pointer to the first digit and address of length variable |
357 | * Advances char pointer to 1st non-digit char and returns number |
358 | */ |
18529408 |
359 | STATIC char * |
49704364 |
360 | S_get_num(pTHX_ register char *patptr, I32 *lenptr ) |
361 | { |
362 | I32 len = *patptr++ - '0'; |
363 | while (isDIGIT(*patptr)) { |
364 | if (len >= 0x7FFFFFFF/10) |
365 | Perl_croak(aTHX_ "pack/unpack repeat count overflow"); |
366 | len = (len * 10) + (*patptr++ - '0'); |
367 | } |
368 | *lenptr = len; |
369 | return patptr; |
370 | } |
371 | |
372 | /* The marvellous template parsing routine: Using state stored in *symptr, |
373 | * locates next template code and count |
374 | */ |
375 | STATIC bool |
376 | S_next_symbol(pTHX_ register tempsym_t* symptr ) |
18529408 |
377 | { |
49704364 |
378 | register char* patptr = symptr->patptr; |
379 | register char* patend = symptr->patend; |
380 | |
381 | symptr->flags &= ~FLAG_SLASH; |
382 | |
383 | while (patptr < patend) { |
384 | if (isSPACE(*patptr)) |
385 | patptr++; |
386 | else if (*patptr == '#') { |
387 | patptr++; |
388 | while (patptr < patend && *patptr != '\n') |
389 | patptr++; |
390 | if (patptr < patend) |
391 | patptr++; |
392 | } else { |
393 | /* We should have found a template code */ |
394 | I32 code = *patptr++ & 0xFF; |
395 | |
396 | if (code == ','){ /* grandfather in commas but with a warning */ |
397 | if (((symptr->flags & FLAG_COMMA) == 0) && ckWARN(WARN_UNPACK)){ |
398 | symptr->flags |= FLAG_COMMA; |
399 | Perl_warner(aTHX_ packWARN(WARN_UNPACK), |
400 | "Invalid type ',' in %s", |
401 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); |
402 | } |
403 | continue; |
404 | } |
405 | |
406 | /* for '(', skip to ')' */ |
407 | if (code == '(') { |
408 | if( isDIGIT(*patptr) || *patptr == '*' || *patptr == '[' ) |
409 | Perl_croak(aTHX_ "()-group starts with a count in %s", |
410 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); |
411 | symptr->grpbeg = patptr; |
412 | patptr = 1 + ( symptr->grpend = group_end(patptr, patend, ')') ); |
413 | if( symptr->level >= MAX_SUB_TEMPLATE_LEVEL ) |
414 | Perl_croak(aTHX_ "Too deeply nested ()-groups in %s", |
415 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); |
416 | } |
417 | |
418 | /* test for '!' modifier */ |
419 | if (patptr < patend && *patptr == '!') { |
068bd2e7 |
420 | static const char natstr[] = "sSiIlLxXnNvV"; |
49704364 |
421 | patptr++; |
422 | if (strchr(natstr, code)) |
423 | code |= TYPE_IS_SHRIEKING; |
424 | else |
5e6396ae |
425 | Perl_croak(aTHX_ "'!' allowed only after types %s in %s", |
49704364 |
426 | natstr, symptr->flags & FLAG_PACK ? "pack" : "unpack" ); |
427 | } |
428 | |
429 | /* look for count and/or / */ |
430 | if (patptr < patend) { |
431 | if (isDIGIT(*patptr)) { |
432 | patptr = get_num( patptr, &symptr->length ); |
433 | symptr->howlen = e_number; |
434 | |
435 | } else if (*patptr == '*') { |
436 | patptr++; |
437 | symptr->howlen = e_star; |
438 | |
439 | } else if (*patptr == '[') { |
440 | char* lenptr = ++patptr; |
441 | symptr->howlen = e_number; |
442 | patptr = group_end( patptr, patend, ']' ) + 1; |
443 | /* what kind of [] is it? */ |
444 | if (isDIGIT(*lenptr)) { |
445 | lenptr = get_num( lenptr, &symptr->length ); |
446 | if( *lenptr != ']' ) |
447 | Perl_croak(aTHX_ "Malformed integer in [] in %s", |
448 | symptr->flags & FLAG_PACK ? "pack" : "unpack"); |
449 | } else { |
450 | tempsym_t savsym = *symptr; |
451 | symptr->patend = patptr-1; |
452 | symptr->patptr = lenptr; |
453 | savsym.length = measure_struct(symptr); |
454 | *symptr = savsym; |
455 | } |
456 | } else { |
457 | symptr->howlen = e_no_len; |
458 | symptr->length = 1; |
459 | } |
460 | |
461 | /* try to find / */ |
462 | while (patptr < patend) { |
463 | if (isSPACE(*patptr)) |
464 | patptr++; |
465 | else if (*patptr == '#') { |
466 | patptr++; |
467 | while (patptr < patend && *patptr != '\n') |
468 | patptr++; |
469 | if (patptr < patend) |
470 | patptr++; |
471 | } else { |
472 | if( *patptr == '/' ){ |
473 | symptr->flags |= FLAG_SLASH; |
474 | patptr++; |
475 | if( patptr < patend && |
476 | (isDIGIT(*patptr) || *patptr == '*' || *patptr == '[') ) |
477 | Perl_croak(aTHX_ "'/' does not take a repeat count in %s", |
478 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); |
479 | } |
480 | break; |
481 | } |
18529408 |
482 | } |
49704364 |
483 | } else { |
484 | /* at end - no count, no / */ |
485 | symptr->howlen = e_no_len; |
486 | symptr->length = 1; |
487 | } |
488 | |
489 | symptr->code = code; |
490 | symptr->patptr = patptr; |
491 | return TRUE; |
18529408 |
492 | } |
49704364 |
493 | } |
494 | symptr->patptr = patptr; |
495 | return FALSE; |
18529408 |
496 | } |
497 | |
18529408 |
498 | /* |
499 | =for apidoc unpack_str |
500 | |
7accc089 |
501 | The engine implementing unpack() Perl function. Note: parameters strbeg, new_s |
502 | and ocnt are not used. This call should not be used, use unpackstring instead. |
18529408 |
503 | |
504 | =cut */ |
505 | |
506 | I32 |
507 | Perl_unpack_str(pTHX_ char *pat, register char *patend, register char *s, char *strbeg, char *strend, char **new_s, I32 ocnt, U32 flags) |
a6ec74c1 |
508 | { |
49704364 |
509 | tempsym_t sym = { 0 }; |
510 | sym.patptr = pat; |
511 | sym.patend = patend; |
512 | sym.flags = flags; |
513 | |
514 | return unpack_rec(&sym, s, s, strend, NULL ); |
515 | } |
516 | |
7accc089 |
517 | /* |
518 | =for apidoc unpackstring |
519 | |
608d3aed |
520 | The engine implementing unpack() Perl function. C<unpackstring> puts the |
521 | extracted list items on the stack and returns the number of elements. |
522 | Issue C<PUTBACK> before and C<SPAGAIN> after the call to this function. |
7accc089 |
523 | |
524 | =cut */ |
525 | |
526 | I32 |
527 | Perl_unpackstring(pTHX_ char *pat, register char *patend, register char *s, char *strend, U32 flags) |
528 | { |
529 | tempsym_t sym = { 0 }; |
530 | sym.patptr = pat; |
531 | sym.patend = patend; |
532 | sym.flags = flags; |
533 | |
534 | return unpack_rec(&sym, s, s, strend, NULL ); |
535 | } |
536 | |
49704364 |
537 | STATIC |
538 | I32 |
539 | S_unpack_rec(pTHX_ register tempsym_t* symptr, register char *s, char *strbeg, char *strend, char **new_s ) |
540 | { |
a6ec74c1 |
541 | dSP; |
a6ec74c1 |
542 | I32 datumtype; |
49704364 |
543 | register I32 len = 0; |
a6ec74c1 |
544 | register I32 bits = 0; |
545 | register char *str; |
18529408 |
546 | SV *sv; |
547 | I32 start_sp_offset = SP - PL_stack_base; |
49704364 |
548 | howlen_t howlen; |
a6ec74c1 |
549 | |
550 | /* These must not be in registers: */ |
551 | short ashort; |
552 | int aint; |
553 | long along; |
554 | #ifdef HAS_QUAD |
555 | Quad_t aquad; |
556 | #endif |
557 | U16 aushort; |
068bd2e7 |
558 | I16 asshort; |
a6ec74c1 |
559 | unsigned int auint; |
560 | U32 aulong; |
068bd2e7 |
561 | I32 aslong; |
a6ec74c1 |
562 | #ifdef HAS_QUAD |
563 | Uquad_t auquad; |
564 | #endif |
565 | char *aptr; |
566 | float afloat; |
567 | double adouble; |
568 | I32 checksum = 0; |
92d41999 |
569 | UV cuv = 0; |
a6ec74c1 |
570 | NV cdouble = 0.0; |
92d41999 |
571 | const int bits_in_uv = 8 * sizeof(cuv); |
49704364 |
572 | char* strrelbeg = s; |
573 | bool beyond = FALSE; |
574 | bool unpack_only_one = (symptr->flags & FLAG_UNPACK_ONLY_ONE) != 0; |
575 | |
92d41999 |
576 | IV aiv; |
577 | UV auv; |
578 | NV anv; |
579 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) |
580 | long double aldouble; |
581 | #endif |
a6ec74c1 |
582 | |
49704364 |
583 | while (next_symbol(symptr)) { |
584 | datumtype = symptr->code; |
206947d2 |
585 | /* do first one only unless in list context |
586 | / is implemented by unpacking the count, then poping it from the |
587 | stack, so must check that we're not in the middle of a / */ |
49704364 |
588 | if ( unpack_only_one |
206947d2 |
589 | && (SP - PL_stack_base == start_sp_offset + 1) |
49704364 |
590 | && (datumtype != '/') ) /* XXX can this be omitted */ |
206947d2 |
591 | break; |
49704364 |
592 | |
593 | switch( howlen = symptr->howlen ){ |
594 | case e_no_len: |
595 | case e_number: |
596 | len = symptr->length; |
597 | break; |
598 | case e_star: |
599 | len = strend - strbeg; /* long enough */ |
600 | break; |
601 | } |
18529408 |
602 | |
a6ec74c1 |
603 | redo_switch: |
49704364 |
604 | beyond = s >= strend; |
a6ec74c1 |
605 | switch(datumtype) { |
606 | default: |
49704364 |
607 | Perl_croak(aTHX_ "Invalid type '%c' in unpack", (int)datumtype ); |
608 | |
a6ec74c1 |
609 | case '%': |
49704364 |
610 | if (howlen == e_no_len) |
18529408 |
611 | len = 16; /* len is not specified */ |
a6ec74c1 |
612 | checksum = len; |
92d41999 |
613 | cuv = 0; |
a6ec74c1 |
614 | cdouble = 0; |
18529408 |
615 | continue; |
a6ec74c1 |
616 | break; |
18529408 |
617 | case '(': |
618 | { |
18529408 |
619 | char *ss = s; /* Move from register */ |
49704364 |
620 | tempsym_t savsym = *symptr; |
621 | symptr->patend = savsym.grpend; |
622 | symptr->level++; |
18529408 |
623 | PUTBACK; |
624 | while (len--) { |
49704364 |
625 | symptr->patptr = savsym.grpbeg; |
626 | unpack_rec(symptr, ss, strbeg, strend, &ss ); |
627 | if (ss == strend && savsym.howlen == e_star) |
628 | break; /* No way to continue */ |
18529408 |
629 | } |
630 | SPAGAIN; |
631 | s = ss; |
49704364 |
632 | savsym.flags = symptr->flags; |
633 | *symptr = savsym; |
18529408 |
634 | break; |
635 | } |
a6ec74c1 |
636 | case '@': |
49704364 |
637 | if (len > strend - strrelbeg) |
638 | Perl_croak(aTHX_ "'@' outside of string in unpack"); |
639 | s = strrelbeg + len; |
a6ec74c1 |
640 | break; |
62f95557 |
641 | case 'X' | TYPE_IS_SHRIEKING: |
642 | if (!len) /* Avoid division by 0 */ |
643 | len = 1; |
644 | len = (s - strbeg) % len; |
645 | /* FALL THROUGH */ |
a6ec74c1 |
646 | case 'X': |
647 | if (len > s - strbeg) |
49704364 |
648 | Perl_croak(aTHX_ "'X' outside of string in unpack" ); |
a6ec74c1 |
649 | s -= len; |
650 | break; |
62f95557 |
651 | case 'x' | TYPE_IS_SHRIEKING: |
652 | if (!len) /* Avoid division by 0 */ |
653 | len = 1; |
654 | aint = (s - strbeg) % len; |
655 | if (aint) /* Other portable ways? */ |
656 | len = len - aint; |
657 | else |
658 | len = 0; |
659 | /* FALL THROUGH */ |
a6ec74c1 |
660 | case 'x': |
661 | if (len > strend - s) |
49704364 |
662 | Perl_croak(aTHX_ "'x' outside of string in unpack"); |
a6ec74c1 |
663 | s += len; |
664 | break; |
665 | case '/': |
49704364 |
666 | Perl_croak(aTHX_ "'/' must follow a numeric type in unpack"); |
667 | break; |
a6ec74c1 |
668 | case 'A': |
669 | case 'Z': |
670 | case 'a': |
671 | if (len > strend - s) |
672 | len = strend - s; |
673 | if (checksum) |
674 | goto uchar_checksum; |
675 | sv = NEWSV(35, len); |
676 | sv_setpvn(sv, s, len); |
49704364 |
677 | if (len > 0 && (datumtype == 'A' || datumtype == 'Z')) { |
a6ec74c1 |
678 | aptr = s; /* borrow register */ |
679 | if (datumtype == 'Z') { /* 'Z' strips stuff after first null */ |
680 | s = SvPVX(sv); |
681 | while (*s) |
682 | s++; |
49704364 |
683 | if (howlen == e_star) /* exact for 'Z*' */ |
d50dd4e4 |
684 | len = s - SvPVX(sv) + 1; |
a6ec74c1 |
685 | } |
686 | else { /* 'A' strips both nulls and spaces */ |
687 | s = SvPVX(sv) + len - 1; |
688 | while (s >= SvPVX(sv) && (!*s || isSPACE(*s))) |
689 | s--; |
690 | *++s = '\0'; |
691 | } |
692 | SvCUR_set(sv, s - SvPVX(sv)); |
693 | s = aptr; /* unborrow register */ |
694 | } |
d50dd4e4 |
695 | s += len; |
a6ec74c1 |
696 | XPUSHs(sv_2mortal(sv)); |
697 | break; |
698 | case 'B': |
699 | case 'b': |
49704364 |
700 | if (howlen == e_star || len > (strend - s) * 8) |
a6ec74c1 |
701 | len = (strend - s) * 8; |
702 | if (checksum) { |
703 | if (!PL_bitcount) { |
704 | Newz(601, PL_bitcount, 256, char); |
705 | for (bits = 1; bits < 256; bits++) { |
706 | if (bits & 1) PL_bitcount[bits]++; |
707 | if (bits & 2) PL_bitcount[bits]++; |
708 | if (bits & 4) PL_bitcount[bits]++; |
709 | if (bits & 8) PL_bitcount[bits]++; |
710 | if (bits & 16) PL_bitcount[bits]++; |
711 | if (bits & 32) PL_bitcount[bits]++; |
712 | if (bits & 64) PL_bitcount[bits]++; |
713 | if (bits & 128) PL_bitcount[bits]++; |
714 | } |
715 | } |
716 | while (len >= 8) { |
92d41999 |
717 | cuv += PL_bitcount[*(unsigned char*)s++]; |
a6ec74c1 |
718 | len -= 8; |
719 | } |
720 | if (len) { |
721 | bits = *s; |
722 | if (datumtype == 'b') { |
723 | while (len-- > 0) { |
92d41999 |
724 | if (bits & 1) cuv++; |
a6ec74c1 |
725 | bits >>= 1; |
726 | } |
727 | } |
728 | else { |
729 | while (len-- > 0) { |
92d41999 |
730 | if (bits & 128) cuv++; |
a6ec74c1 |
731 | bits <<= 1; |
732 | } |
733 | } |
734 | } |
735 | break; |
736 | } |
737 | sv = NEWSV(35, len + 1); |
738 | SvCUR_set(sv, len); |
739 | SvPOK_on(sv); |
740 | str = SvPVX(sv); |
741 | if (datumtype == 'b') { |
742 | aint = len; |
743 | for (len = 0; len < aint; len++) { |
744 | if (len & 7) /*SUPPRESS 595*/ |
745 | bits >>= 1; |
746 | else |
747 | bits = *s++; |
748 | *str++ = '0' + (bits & 1); |
749 | } |
750 | } |
751 | else { |
752 | aint = len; |
753 | for (len = 0; len < aint; len++) { |
754 | if (len & 7) |
755 | bits <<= 1; |
756 | else |
757 | bits = *s++; |
758 | *str++ = '0' + ((bits & 128) != 0); |
759 | } |
760 | } |
761 | *str = '\0'; |
762 | XPUSHs(sv_2mortal(sv)); |
763 | break; |
764 | case 'H': |
765 | case 'h': |
49704364 |
766 | if (howlen == e_star || len > (strend - s) * 2) |
a6ec74c1 |
767 | len = (strend - s) * 2; |
768 | sv = NEWSV(35, len + 1); |
769 | SvCUR_set(sv, len); |
770 | SvPOK_on(sv); |
771 | str = SvPVX(sv); |
772 | if (datumtype == 'h') { |
773 | aint = len; |
774 | for (len = 0; len < aint; len++) { |
775 | if (len & 1) |
776 | bits >>= 4; |
777 | else |
778 | bits = *s++; |
779 | *str++ = PL_hexdigit[bits & 15]; |
780 | } |
781 | } |
782 | else { |
783 | aint = len; |
784 | for (len = 0; len < aint; len++) { |
785 | if (len & 1) |
786 | bits <<= 4; |
787 | else |
788 | bits = *s++; |
789 | *str++ = PL_hexdigit[(bits >> 4) & 15]; |
790 | } |
791 | } |
792 | *str = '\0'; |
793 | XPUSHs(sv_2mortal(sv)); |
794 | break; |
795 | case 'c': |
796 | if (len > strend - s) |
797 | len = strend - s; |
798 | if (checksum) { |
799 | while (len-- > 0) { |
800 | aint = *s++; |
801 | if (aint >= 128) /* fake up signed chars */ |
802 | aint -= 256; |
fa8ec7c1 |
803 | if (checksum > bits_in_uv) |
804 | cdouble += (NV)aint; |
805 | else |
92d41999 |
806 | cuv += aint; |
a6ec74c1 |
807 | } |
808 | } |
809 | else { |
49704364 |
810 | if (len && unpack_only_one) |
c8f824eb |
811 | len = 1; |
a6ec74c1 |
812 | EXTEND(SP, len); |
813 | EXTEND_MORTAL(len); |
814 | while (len-- > 0) { |
815 | aint = *s++; |
816 | if (aint >= 128) /* fake up signed chars */ |
817 | aint -= 256; |
818 | sv = NEWSV(36, 0); |
819 | sv_setiv(sv, (IV)aint); |
820 | PUSHs(sv_2mortal(sv)); |
821 | } |
822 | } |
823 | break; |
824 | case 'C': |
35bcd338 |
825 | unpack_C: /* unpack U will jump here if not UTF-8 */ |
826 | if (len == 0) { |
49704364 |
827 | symptr->flags &= ~FLAG_UNPACK_DO_UTF8; |
35bcd338 |
828 | break; |
829 | } |
a6ec74c1 |
830 | if (len > strend - s) |
831 | len = strend - s; |
832 | if (checksum) { |
833 | uchar_checksum: |
834 | while (len-- > 0) { |
835 | auint = *s++ & 255; |
92d41999 |
836 | cuv += auint; |
a6ec74c1 |
837 | } |
838 | } |
839 | else { |
49704364 |
840 | if (len && unpack_only_one) |
c8f824eb |
841 | len = 1; |
a6ec74c1 |
842 | EXTEND(SP, len); |
843 | EXTEND_MORTAL(len); |
844 | while (len-- > 0) { |
845 | auint = *s++ & 255; |
846 | sv = NEWSV(37, 0); |
847 | sv_setiv(sv, (IV)auint); |
848 | PUSHs(sv_2mortal(sv)); |
849 | } |
850 | } |
851 | break; |
852 | case 'U': |
35bcd338 |
853 | if (len == 0) { |
49704364 |
854 | symptr->flags |= FLAG_UNPACK_DO_UTF8; |
35bcd338 |
855 | break; |
856 | } |
49704364 |
857 | if ((symptr->flags & FLAG_UNPACK_DO_UTF8) == 0) |
35bcd338 |
858 | goto unpack_C; |
a6ec74c1 |
859 | if (len > strend - s) |
860 | len = strend - s; |
861 | if (checksum) { |
862 | while (len-- > 0 && s < strend) { |
863 | STRLEN alen; |
872c91ae |
864 | auint = NATIVE_TO_UNI(utf8n_to_uvchr((U8*)s, strend - s, &alen, ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANYUV)); |
a6ec74c1 |
865 | along = alen; |
866 | s += along; |
fa8ec7c1 |
867 | if (checksum > bits_in_uv) |
a6ec74c1 |
868 | cdouble += (NV)auint; |
869 | else |
92d41999 |
870 | cuv += auint; |
a6ec74c1 |
871 | } |
872 | } |
873 | else { |
49704364 |
874 | if (len && unpack_only_one) |
c8f824eb |
875 | len = 1; |
a6ec74c1 |
876 | EXTEND(SP, len); |
877 | EXTEND_MORTAL(len); |
878 | while (len-- > 0 && s < strend) { |
879 | STRLEN alen; |
872c91ae |
880 | auint = NATIVE_TO_UNI(utf8n_to_uvchr((U8*)s, strend - s, &alen, ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANYUV)); |
a6ec74c1 |
881 | along = alen; |
882 | s += along; |
883 | sv = NEWSV(37, 0); |
884 | sv_setuv(sv, (UV)auint); |
885 | PUSHs(sv_2mortal(sv)); |
886 | } |
887 | } |
888 | break; |
49704364 |
889 | case 's' | TYPE_IS_SHRIEKING: |
890 | #if SHORTSIZE != SIZE16 |
891 | along = (strend - s) / sizeof(short); |
a6ec74c1 |
892 | if (len > along) |
893 | len = along; |
894 | if (checksum) { |
49704364 |
895 | short ashort; |
896 | while (len-- > 0) { |
897 | COPYNN(s, &ashort, sizeof(short)); |
898 | s += sizeof(short); |
899 | if (checksum > bits_in_uv) |
900 | cdouble += (NV)ashort; |
901 | else |
902 | cuv += ashort; |
a6ec74c1 |
903 | |
a6ec74c1 |
904 | } |
49704364 |
905 | } |
906 | else { |
73b5735c |
907 | short ashort; |
49704364 |
908 | if (len && unpack_only_one) |
909 | len = 1; |
910 | EXTEND(SP, len); |
911 | EXTEND_MORTAL(len); |
49704364 |
912 | while (len-- > 0) { |
913 | COPYNN(s, &ashort, sizeof(short)); |
914 | s += sizeof(short); |
915 | sv = NEWSV(38, 0); |
916 | sv_setiv(sv, (IV)ashort); |
917 | PUSHs(sv_2mortal(sv)); |
918 | } |
919 | } |
920 | break; |
921 | #else |
922 | /* Fallthrough! */ |
a6ec74c1 |
923 | #endif |
49704364 |
924 | case 's': |
925 | along = (strend - s) / SIZE16; |
926 | if (len > along) |
927 | len = along; |
928 | if (checksum) { |
929 | while (len-- > 0) { |
930 | COPY16(s, &ashort); |
a6ec74c1 |
931 | #if SHORTSIZE > SIZE16 |
49704364 |
932 | if (ashort > 32767) |
933 | ashort -= 65536; |
a6ec74c1 |
934 | #endif |
49704364 |
935 | s += SIZE16; |
936 | if (checksum > bits_in_uv) |
937 | cdouble += (NV)ashort; |
938 | else |
939 | cuv += ashort; |
a6ec74c1 |
940 | } |
941 | } |
942 | else { |
49704364 |
943 | if (len && unpack_only_one) |
c8f824eb |
944 | len = 1; |
a6ec74c1 |
945 | EXTEND(SP, len); |
946 | EXTEND_MORTAL(len); |
49704364 |
947 | |
948 | while (len-- > 0) { |
949 | COPY16(s, &ashort); |
a6ec74c1 |
950 | #if SHORTSIZE > SIZE16 |
49704364 |
951 | if (ashort > 32767) |
952 | ashort -= 65536; |
a6ec74c1 |
953 | #endif |
49704364 |
954 | s += SIZE16; |
955 | sv = NEWSV(38, 0); |
956 | sv_setiv(sv, (IV)ashort); |
957 | PUSHs(sv_2mortal(sv)); |
a6ec74c1 |
958 | } |
959 | } |
960 | break; |
49704364 |
961 | case 'S' | TYPE_IS_SHRIEKING: |
962 | #if SHORTSIZE != SIZE16 |
7accc089 |
963 | along = (strend - s) / sizeof(unsigned short); |
49704364 |
964 | if (len > along) |
965 | len = along; |
966 | if (checksum) { |
967 | unsigned short aushort; |
968 | while (len-- > 0) { |
969 | COPYNN(s, &aushort, sizeof(unsigned short)); |
970 | s += sizeof(unsigned short); |
971 | if (checksum > bits_in_uv) |
972 | cdouble += (NV)aushort; |
973 | else |
974 | cuv += aushort; |
975 | } |
976 | } |
977 | else { |
978 | if (len && unpack_only_one) |
979 | len = 1; |
980 | EXTEND(SP, len); |
981 | EXTEND_MORTAL(len); |
982 | while (len-- > 0) { |
983 | unsigned short aushort; |
984 | COPYNN(s, &aushort, sizeof(unsigned short)); |
985 | s += sizeof(unsigned short); |
986 | sv = NEWSV(39, 0); |
987 | sv_setiv(sv, (UV)aushort); |
988 | PUSHs(sv_2mortal(sv)); |
989 | } |
990 | } |
991 | break; |
992 | #else |
993 | /* Fallhrough! */ |
994 | #endif |
a6ec74c1 |
995 | case 'v': |
996 | case 'n': |
997 | case 'S': |
a6ec74c1 |
998 | along = (strend - s) / SIZE16; |
a6ec74c1 |
999 | if (len > along) |
1000 | len = along; |
1001 | if (checksum) { |
49704364 |
1002 | while (len-- > 0) { |
1003 | COPY16(s, &aushort); |
1004 | s += SIZE16; |
a6ec74c1 |
1005 | #ifdef HAS_NTOHS |
49704364 |
1006 | if (datumtype == 'n') |
1007 | aushort = PerlSock_ntohs(aushort); |
a6ec74c1 |
1008 | #endif |
1009 | #ifdef HAS_VTOHS |
49704364 |
1010 | if (datumtype == 'v') |
1011 | aushort = vtohs(aushort); |
a6ec74c1 |
1012 | #endif |
49704364 |
1013 | if (checksum > bits_in_uv) |
1014 | cdouble += (NV)aushort; |
1015 | else |
068bd2e7 |
1016 | cuv += aushort; |
a6ec74c1 |
1017 | } |
1018 | } |
1019 | else { |
49704364 |
1020 | if (len && unpack_only_one) |
c8f824eb |
1021 | len = 1; |
a6ec74c1 |
1022 | EXTEND(SP, len); |
1023 | EXTEND_MORTAL(len); |
49704364 |
1024 | while (len-- > 0) { |
1025 | COPY16(s, &aushort); |
1026 | s += SIZE16; |
1027 | sv = NEWSV(39, 0); |
a6ec74c1 |
1028 | #ifdef HAS_NTOHS |
49704364 |
1029 | if (datumtype == 'n') |
1030 | aushort = PerlSock_ntohs(aushort); |
a6ec74c1 |
1031 | #endif |
1032 | #ifdef HAS_VTOHS |
49704364 |
1033 | if (datumtype == 'v') |
1034 | aushort = vtohs(aushort); |
a6ec74c1 |
1035 | #endif |
49704364 |
1036 | sv_setiv(sv, (UV)aushort); |
1037 | PUSHs(sv_2mortal(sv)); |
a6ec74c1 |
1038 | } |
1039 | } |
1040 | break; |
068bd2e7 |
1041 | case 'v' | TYPE_IS_SHRIEKING: |
1042 | case 'n' | TYPE_IS_SHRIEKING: |
1043 | along = (strend - s) / SIZE16; |
1044 | if (len > along) |
1045 | len = along; |
1046 | if (checksum) { |
1047 | while (len-- > 0) { |
1048 | COPY16(s, &asshort); |
1049 | s += SIZE16; |
1050 | #ifdef HAS_NTOHS |
1051 | if (datumtype == ('n' | TYPE_IS_SHRIEKING)) |
1052 | asshort = (I16)PerlSock_ntohs((U16)asshort); |
1053 | #endif |
1054 | #ifdef HAS_VTOHS |
1055 | if (datumtype == ('v' | TYPE_IS_SHRIEKING)) |
1056 | asshort = (I16)vtohs((U16)asshort); |
1057 | #endif |
1058 | if (checksum > bits_in_uv) |
1059 | cdouble += (NV)asshort; |
1060 | else |
1061 | cuv += asshort; |
1062 | } |
1063 | } |
1064 | else { |
1065 | if (len && unpack_only_one) |
1066 | len = 1; |
1067 | EXTEND(SP, len); |
1068 | EXTEND_MORTAL(len); |
1069 | while (len-- > 0) { |
1070 | COPY16(s, &asshort); |
1071 | s += SIZE16; |
1072 | #ifdef HAS_NTOHS |
1073 | if (datumtype == ('n' | TYPE_IS_SHRIEKING)) |
1074 | asshort = (I16)PerlSock_ntohs((U16)asshort); |
1075 | #endif |
1076 | #ifdef HAS_VTOHS |
1077 | if (datumtype == ('v' | TYPE_IS_SHRIEKING)) |
1078 | asshort = (I16)vtohs((U16)asshort); |
1079 | #endif |
1080 | sv = NEWSV(39, 0); |
1081 | sv_setiv(sv, (IV)asshort); |
1082 | PUSHs(sv_2mortal(sv)); |
1083 | } |
1084 | } |
1085 | break; |
a6ec74c1 |
1086 | case 'i': |
49704364 |
1087 | case 'i' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
1088 | along = (strend - s) / sizeof(int); |
1089 | if (len > along) |
1090 | len = along; |
1091 | if (checksum) { |
1092 | while (len-- > 0) { |
1093 | Copy(s, &aint, 1, int); |
1094 | s += sizeof(int); |
fa8ec7c1 |
1095 | if (checksum > bits_in_uv) |
a6ec74c1 |
1096 | cdouble += (NV)aint; |
1097 | else |
92d41999 |
1098 | cuv += aint; |
a6ec74c1 |
1099 | } |
1100 | } |
1101 | else { |
49704364 |
1102 | if (len && unpack_only_one) |
c8f824eb |
1103 | len = 1; |
a6ec74c1 |
1104 | EXTEND(SP, len); |
1105 | EXTEND_MORTAL(len); |
1106 | while (len-- > 0) { |
1107 | Copy(s, &aint, 1, int); |
1108 | s += sizeof(int); |
1109 | sv = NEWSV(40, 0); |
1110 | #ifdef __osf__ |
1111 | /* Without the dummy below unpack("i", pack("i",-1)) |
1112 | * return 0xFFffFFff instead of -1 for Digital Unix V4.0 |
1113 | * cc with optimization turned on. |
1114 | * |
1115 | * The bug was detected in |
1116 | * DEC C V5.8-009 on Digital UNIX V4.0 (Rev. 1091) (V4.0E) |
1117 | * with optimization (-O4) turned on. |
1118 | * DEC C V5.2-040 on Digital UNIX V4.0 (Rev. 564) (V4.0B) |
1119 | * does not have this problem even with -O4. |
1120 | * |
1121 | * This bug was reported as DECC_BUGS 1431 |
1122 | * and tracked internally as GEM_BUGS 7775. |
1123 | * |
1124 | * The bug is fixed in |
1125 | * Tru64 UNIX V5.0: Compaq C V6.1-006 or later |
1126 | * UNIX V4.0F support: DEC C V5.9-006 or later |
1127 | * UNIX V4.0E support: DEC C V5.8-011 or later |
1128 | * and also in DTK. |
1129 | * |
1130 | * See also few lines later for the same bug. |
1131 | */ |
1132 | (aint) ? |
1133 | sv_setiv(sv, (IV)aint) : |
1134 | #endif |
1135 | sv_setiv(sv, (IV)aint); |
1136 | PUSHs(sv_2mortal(sv)); |
1137 | } |
1138 | } |
1139 | break; |
1140 | case 'I': |
49704364 |
1141 | case 'I' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
1142 | along = (strend - s) / sizeof(unsigned int); |
1143 | if (len > along) |
1144 | len = along; |
1145 | if (checksum) { |
1146 | while (len-- > 0) { |
1147 | Copy(s, &auint, 1, unsigned int); |
1148 | s += sizeof(unsigned int); |
fa8ec7c1 |
1149 | if (checksum > bits_in_uv) |
a6ec74c1 |
1150 | cdouble += (NV)auint; |
1151 | else |
92d41999 |
1152 | cuv += auint; |
a6ec74c1 |
1153 | } |
1154 | } |
1155 | else { |
49704364 |
1156 | if (len && unpack_only_one) |
c8f824eb |
1157 | len = 1; |
a6ec74c1 |
1158 | EXTEND(SP, len); |
1159 | EXTEND_MORTAL(len); |
1160 | while (len-- > 0) { |
1161 | Copy(s, &auint, 1, unsigned int); |
1162 | s += sizeof(unsigned int); |
1163 | sv = NEWSV(41, 0); |
1164 | #ifdef __osf__ |
1165 | /* Without the dummy below unpack("I", pack("I",0xFFFFFFFF)) |
1166 | * returns 1.84467440737096e+19 instead of 0xFFFFFFFF. |
1167 | * See details few lines earlier. */ |
1168 | (auint) ? |
1169 | sv_setuv(sv, (UV)auint) : |
1170 | #endif |
1171 | sv_setuv(sv, (UV)auint); |
1172 | PUSHs(sv_2mortal(sv)); |
1173 | } |
1174 | } |
1175 | break; |
92d41999 |
1176 | case 'j': |
1177 | along = (strend - s) / IVSIZE; |
1178 | if (len > along) |
1179 | len = along; |
1180 | if (checksum) { |
1181 | while (len-- > 0) { |
1182 | Copy(s, &aiv, 1, IV); |
1183 | s += IVSIZE; |
1184 | if (checksum > bits_in_uv) |
1185 | cdouble += (NV)aiv; |
1186 | else |
1187 | cuv += aiv; |
1188 | } |
1189 | } |
1190 | else { |
49704364 |
1191 | if (len && unpack_only_one) |
c8f824eb |
1192 | len = 1; |
92d41999 |
1193 | EXTEND(SP, len); |
1194 | EXTEND_MORTAL(len); |
1195 | while (len-- > 0) { |
1196 | Copy(s, &aiv, 1, IV); |
1197 | s += IVSIZE; |
1198 | sv = NEWSV(40, 0); |
1199 | sv_setiv(sv, aiv); |
1200 | PUSHs(sv_2mortal(sv)); |
1201 | } |
1202 | } |
1203 | break; |
1204 | case 'J': |
1205 | along = (strend - s) / UVSIZE; |
1206 | if (len > along) |
1207 | len = along; |
1208 | if (checksum) { |
1209 | while (len-- > 0) { |
1210 | Copy(s, &auv, 1, UV); |
1211 | s += UVSIZE; |
1212 | if (checksum > bits_in_uv) |
1213 | cdouble += (NV)auv; |
1214 | else |
1215 | cuv += auv; |
1216 | } |
1217 | } |
1218 | else { |
49704364 |
1219 | if (len && unpack_only_one) |
c8f824eb |
1220 | len = 1; |
92d41999 |
1221 | EXTEND(SP, len); |
1222 | EXTEND_MORTAL(len); |
1223 | while (len-- > 0) { |
1224 | Copy(s, &auv, 1, UV); |
1225 | s += UVSIZE; |
1226 | sv = NEWSV(41, 0); |
1227 | sv_setuv(sv, auv); |
1228 | PUSHs(sv_2mortal(sv)); |
1229 | } |
1230 | } |
1231 | break; |
49704364 |
1232 | case 'l' | TYPE_IS_SHRIEKING: |
1233 | #if LONGSIZE != SIZE32 |
1234 | along = (strend - s) / sizeof(long); |
a6ec74c1 |
1235 | if (len > along) |
1236 | len = along; |
1237 | if (checksum) { |
49704364 |
1238 | while (len-- > 0) { |
1239 | COPYNN(s, &along, sizeof(long)); |
1240 | s += sizeof(long); |
1241 | if (checksum > bits_in_uv) |
1242 | cdouble += (NV)along; |
1243 | else |
1244 | cuv += along; |
a6ec74c1 |
1245 | } |
49704364 |
1246 | } |
1247 | else { |
1248 | if (len && unpack_only_one) |
1249 | len = 1; |
1250 | EXTEND(SP, len); |
1251 | EXTEND_MORTAL(len); |
1252 | while (len-- > 0) { |
1253 | COPYNN(s, &along, sizeof(long)); |
1254 | s += sizeof(long); |
1255 | sv = NEWSV(42, 0); |
1256 | sv_setiv(sv, (IV)along); |
1257 | PUSHs(sv_2mortal(sv)); |
1258 | } |
1259 | } |
1260 | break; |
1261 | #else |
1262 | /* Fallthrough! */ |
a6ec74c1 |
1263 | #endif |
49704364 |
1264 | case 'l': |
1265 | along = (strend - s) / SIZE32; |
1266 | if (len > along) |
1267 | len = along; |
1268 | if (checksum) { |
1269 | while (len-- > 0) { |
a6ec74c1 |
1270 | #if LONGSIZE > SIZE32 && INTSIZE == SIZE32 |
49704364 |
1271 | I32 along; |
a6ec74c1 |
1272 | #endif |
49704364 |
1273 | COPY32(s, &along); |
a6ec74c1 |
1274 | #if LONGSIZE > SIZE32 |
49704364 |
1275 | if (along > 2147483647) |
1276 | along -= 4294967296; |
a6ec74c1 |
1277 | #endif |
49704364 |
1278 | s += SIZE32; |
1279 | if (checksum > bits_in_uv) |
1280 | cdouble += (NV)along; |
1281 | else |
1282 | cuv += along; |
a6ec74c1 |
1283 | } |
1284 | } |
1285 | else { |
49704364 |
1286 | if (len && unpack_only_one) |
c8f824eb |
1287 | len = 1; |
a6ec74c1 |
1288 | EXTEND(SP, len); |
1289 | EXTEND_MORTAL(len); |
49704364 |
1290 | while (len-- > 0) { |
a6ec74c1 |
1291 | #if LONGSIZE > SIZE32 && INTSIZE == SIZE32 |
49704364 |
1292 | I32 along; |
a6ec74c1 |
1293 | #endif |
49704364 |
1294 | COPY32(s, &along); |
a6ec74c1 |
1295 | #if LONGSIZE > SIZE32 |
49704364 |
1296 | if (along > 2147483647) |
1297 | along -= 4294967296; |
a6ec74c1 |
1298 | #endif |
49704364 |
1299 | s += SIZE32; |
1300 | sv = NEWSV(42, 0); |
1301 | sv_setiv(sv, (IV)along); |
1302 | PUSHs(sv_2mortal(sv)); |
a6ec74c1 |
1303 | } |
1304 | } |
1305 | break; |
49704364 |
1306 | case 'L' | TYPE_IS_SHRIEKING: |
1307 | #if LONGSIZE != SIZE32 |
1308 | along = (strend - s) / sizeof(unsigned long); |
1309 | if (len > along) |
1310 | len = along; |
1311 | if (checksum) { |
1312 | while (len-- > 0) { |
1313 | unsigned long aulong; |
1314 | COPYNN(s, &aulong, sizeof(unsigned long)); |
1315 | s += sizeof(unsigned long); |
1316 | if (checksum > bits_in_uv) |
1317 | cdouble += (NV)aulong; |
1318 | else |
1319 | cuv += aulong; |
1320 | } |
1321 | } |
1322 | else { |
1323 | if (len && unpack_only_one) |
1324 | len = 1; |
1325 | EXTEND(SP, len); |
1326 | EXTEND_MORTAL(len); |
1327 | while (len-- > 0) { |
1328 | unsigned long aulong; |
1329 | COPYNN(s, &aulong, sizeof(unsigned long)); |
1330 | s += sizeof(unsigned long); |
1331 | sv = NEWSV(43, 0); |
1332 | sv_setuv(sv, (UV)aulong); |
1333 | PUSHs(sv_2mortal(sv)); |
1334 | } |
1335 | } |
1336 | break; |
1337 | #else |
1338 | /* Fall through! */ |
1339 | #endif |
a6ec74c1 |
1340 | case 'V': |
1341 | case 'N': |
1342 | case 'L': |
a6ec74c1 |
1343 | along = (strend - s) / SIZE32; |
a6ec74c1 |
1344 | if (len > along) |
1345 | len = along; |
1346 | if (checksum) { |
49704364 |
1347 | while (len-- > 0) { |
1348 | COPY32(s, &aulong); |
1349 | s += SIZE32; |
a6ec74c1 |
1350 | #ifdef HAS_NTOHL |
49704364 |
1351 | if (datumtype == 'N') |
1352 | aulong = PerlSock_ntohl(aulong); |
a6ec74c1 |
1353 | #endif |
1354 | #ifdef HAS_VTOHL |
49704364 |
1355 | if (datumtype == 'V') |
1356 | aulong = vtohl(aulong); |
a6ec74c1 |
1357 | #endif |
49704364 |
1358 | if (checksum > bits_in_uv) |
1359 | cdouble += (NV)aulong; |
1360 | else |
1361 | cuv += aulong; |
a6ec74c1 |
1362 | } |
1363 | } |
1364 | else { |
49704364 |
1365 | if (len && unpack_only_one) |
c8f824eb |
1366 | len = 1; |
a6ec74c1 |
1367 | EXTEND(SP, len); |
1368 | EXTEND_MORTAL(len); |
49704364 |
1369 | while (len-- > 0) { |
1370 | COPY32(s, &aulong); |
1371 | s += SIZE32; |
a6ec74c1 |
1372 | #ifdef HAS_NTOHL |
49704364 |
1373 | if (datumtype == 'N') |
1374 | aulong = PerlSock_ntohl(aulong); |
a6ec74c1 |
1375 | #endif |
1376 | #ifdef HAS_VTOHL |
49704364 |
1377 | if (datumtype == 'V') |
1378 | aulong = vtohl(aulong); |
a6ec74c1 |
1379 | #endif |
49704364 |
1380 | sv = NEWSV(43, 0); |
1381 | sv_setuv(sv, (UV)aulong); |
1382 | PUSHs(sv_2mortal(sv)); |
a6ec74c1 |
1383 | } |
1384 | } |
1385 | break; |
068bd2e7 |
1386 | case 'V' | TYPE_IS_SHRIEKING: |
1387 | case 'N' | TYPE_IS_SHRIEKING: |
1388 | along = (strend - s) / SIZE32; |
1389 | if (len > along) |
1390 | len = along; |
1391 | if (checksum) { |
1392 | while (len-- > 0) { |
1393 | COPY32(s, &aslong); |
1394 | s += SIZE32; |
1395 | #ifdef HAS_NTOHL |
1396 | if (datumtype == ('N' | TYPE_IS_SHRIEKING)) |
1397 | aslong = (I32)PerlSock_ntohl((U32)aslong); |
1398 | #endif |
1399 | #ifdef HAS_VTOHL |
1400 | if (datumtype == ('V' | TYPE_IS_SHRIEKING)) |
1401 | aslong = (I32)vtohl((U32)aslong); |
1402 | #endif |
1403 | if (checksum > bits_in_uv) |
1404 | cdouble += (NV)aslong; |
1405 | else |
1406 | cuv += aslong; |
1407 | } |
1408 | } |
1409 | else { |
1410 | if (len && unpack_only_one) |
1411 | len = 1; |
1412 | EXTEND(SP, len); |
1413 | EXTEND_MORTAL(len); |
1414 | while (len-- > 0) { |
1415 | COPY32(s, &aslong); |
1416 | s += SIZE32; |
1417 | #ifdef HAS_NTOHL |
1418 | if (datumtype == ('N' | TYPE_IS_SHRIEKING)) |
1419 | aslong = (I32)PerlSock_ntohl((U32)aslong); |
1420 | #endif |
1421 | #ifdef HAS_VTOHL |
1422 | if (datumtype == ('V' | TYPE_IS_SHRIEKING)) |
1423 | aslong = (I32)vtohl((U32)aslong); |
1424 | #endif |
1425 | sv = NEWSV(43, 0); |
1426 | sv_setiv(sv, (IV)aslong); |
1427 | PUSHs(sv_2mortal(sv)); |
1428 | } |
1429 | } |
1430 | break; |
a6ec74c1 |
1431 | case 'p': |
1432 | along = (strend - s) / sizeof(char*); |
1433 | if (len > along) |
1434 | len = along; |
1435 | EXTEND(SP, len); |
1436 | EXTEND_MORTAL(len); |
1437 | while (len-- > 0) { |
1438 | if (sizeof(char*) > strend - s) |
1439 | break; |
1440 | else { |
1441 | Copy(s, &aptr, 1, char*); |
1442 | s += sizeof(char*); |
1443 | } |
1444 | sv = NEWSV(44, 0); |
1445 | if (aptr) |
1446 | sv_setpv(sv, aptr); |
1447 | PUSHs(sv_2mortal(sv)); |
1448 | } |
1449 | break; |
1450 | case 'w': |
49704364 |
1451 | if (len && unpack_only_one) |
c8f824eb |
1452 | len = 1; |
a6ec74c1 |
1453 | EXTEND(SP, len); |
1454 | EXTEND_MORTAL(len); |
1455 | { |
1456 | UV auv = 0; |
1457 | U32 bytes = 0; |
1458 | |
1459 | while ((len > 0) && (s < strend)) { |
1460 | auv = (auv << 7) | (*s & 0x7f); |
1461 | /* UTF8_IS_XXXXX not right here - using constant 0x80 */ |
1462 | if ((U8)(*s++) < 0x80) { |
1463 | bytes = 0; |
1464 | sv = NEWSV(40, 0); |
1465 | sv_setuv(sv, auv); |
1466 | PUSHs(sv_2mortal(sv)); |
1467 | len--; |
1468 | auv = 0; |
1469 | } |
1470 | else if (++bytes >= sizeof(UV)) { /* promote to string */ |
1471 | char *t; |
1472 | STRLEN n_a; |
1473 | |
1474 | sv = Perl_newSVpvf(aTHX_ "%.*"UVf, (int)TYPE_DIGITS(UV), auv); |
1475 | while (s < strend) { |
eb160463 |
1476 | sv = mul128(sv, (U8)(*s & 0x7f)); |
a6ec74c1 |
1477 | if (!(*s++ & 0x80)) { |
1478 | bytes = 0; |
1479 | break; |
1480 | } |
1481 | } |
1482 | t = SvPV(sv, n_a); |
1483 | while (*t == '0') |
1484 | t++; |
1485 | sv_chop(sv, t); |
1486 | PUSHs(sv_2mortal(sv)); |
1487 | len--; |
1488 | auv = 0; |
1489 | } |
1490 | } |
1491 | if ((s >= strend) && bytes) |
49704364 |
1492 | Perl_croak(aTHX_ "Unterminated compressed integer in unpack"); |
a6ec74c1 |
1493 | } |
1494 | break; |
1495 | case 'P': |
49704364 |
1496 | if (symptr->howlen == e_star) |
1497 | Perl_croak(aTHX_ "'P' must have an explicit size in unpack"); |
a6ec74c1 |
1498 | EXTEND(SP, 1); |
1499 | if (sizeof(char*) > strend - s) |
1500 | break; |
1501 | else { |
1502 | Copy(s, &aptr, 1, char*); |
1503 | s += sizeof(char*); |
1504 | } |
1505 | sv = NEWSV(44, 0); |
1506 | if (aptr) |
1507 | sv_setpvn(sv, aptr, len); |
1508 | PUSHs(sv_2mortal(sv)); |
1509 | break; |
1510 | #ifdef HAS_QUAD |
1511 | case 'q': |
1512 | along = (strend - s) / sizeof(Quad_t); |
1513 | if (len > along) |
1514 | len = along; |
fa8ec7c1 |
1515 | if (checksum) { |
1516 | while (len-- > 0) { |
a6ec74c1 |
1517 | Copy(s, &aquad, 1, Quad_t); |
1518 | s += sizeof(Quad_t); |
fa8ec7c1 |
1519 | if (checksum > bits_in_uv) |
1520 | cdouble += (NV)aquad; |
1521 | else |
92d41999 |
1522 | cuv += aquad; |
a6ec74c1 |
1523 | } |
a6ec74c1 |
1524 | } |
fa8ec7c1 |
1525 | else { |
49704364 |
1526 | if (len && unpack_only_one) |
c8f824eb |
1527 | len = 1; |
fa8ec7c1 |
1528 | EXTEND(SP, len); |
1529 | EXTEND_MORTAL(len); |
1530 | while (len-- > 0) { |
1531 | if (s + sizeof(Quad_t) > strend) |
1532 | aquad = 0; |
1533 | else { |
92d41999 |
1534 | Copy(s, &aquad, 1, Quad_t); |
1535 | s += sizeof(Quad_t); |
fa8ec7c1 |
1536 | } |
1537 | sv = NEWSV(42, 0); |
1538 | if (aquad >= IV_MIN && aquad <= IV_MAX) |
92d41999 |
1539 | sv_setiv(sv, (IV)aquad); |
fa8ec7c1 |
1540 | else |
1541 | sv_setnv(sv, (NV)aquad); |
1542 | PUSHs(sv_2mortal(sv)); |
1543 | } |
1544 | } |
a6ec74c1 |
1545 | break; |
1546 | case 'Q': |
206947d2 |
1547 | along = (strend - s) / sizeof(Uquad_t); |
a6ec74c1 |
1548 | if (len > along) |
1549 | len = along; |
fa8ec7c1 |
1550 | if (checksum) { |
1551 | while (len-- > 0) { |
a6ec74c1 |
1552 | Copy(s, &auquad, 1, Uquad_t); |
1553 | s += sizeof(Uquad_t); |
fa8ec7c1 |
1554 | if (checksum > bits_in_uv) |
1555 | cdouble += (NV)auquad; |
1556 | else |
92d41999 |
1557 | cuv += auquad; |
a6ec74c1 |
1558 | } |
a6ec74c1 |
1559 | } |
fa8ec7c1 |
1560 | else { |
49704364 |
1561 | if (len && unpack_only_one) |
c8f824eb |
1562 | len = 1; |
fa8ec7c1 |
1563 | EXTEND(SP, len); |
1564 | EXTEND_MORTAL(len); |
1565 | while (len-- > 0) { |
1566 | if (s + sizeof(Uquad_t) > strend) |
1567 | auquad = 0; |
1568 | else { |
1569 | Copy(s, &auquad, 1, Uquad_t); |
1570 | s += sizeof(Uquad_t); |
1571 | } |
1572 | sv = NEWSV(43, 0); |
1573 | if (auquad <= UV_MAX) |
1574 | sv_setuv(sv, (UV)auquad); |
1575 | else |
1576 | sv_setnv(sv, (NV)auquad); |
1577 | PUSHs(sv_2mortal(sv)); |
1578 | } |
1579 | } |
a6ec74c1 |
1580 | break; |
1581 | #endif |
1582 | /* float and double added gnb@melba.bby.oz.au 22/11/89 */ |
1583 | case 'f': |
a6ec74c1 |
1584 | along = (strend - s) / sizeof(float); |
1585 | if (len > along) |
1586 | len = along; |
1587 | if (checksum) { |
1588 | while (len-- > 0) { |
1589 | Copy(s, &afloat, 1, float); |
1590 | s += sizeof(float); |
1591 | cdouble += afloat; |
1592 | } |
1593 | } |
1594 | else { |
49704364 |
1595 | if (len && unpack_only_one) |
c8f824eb |
1596 | len = 1; |
a6ec74c1 |
1597 | EXTEND(SP, len); |
1598 | EXTEND_MORTAL(len); |
1599 | while (len-- > 0) { |
1600 | Copy(s, &afloat, 1, float); |
1601 | s += sizeof(float); |
1602 | sv = NEWSV(47, 0); |
1603 | sv_setnv(sv, (NV)afloat); |
1604 | PUSHs(sv_2mortal(sv)); |
1605 | } |
1606 | } |
1607 | break; |
1608 | case 'd': |
a6ec74c1 |
1609 | along = (strend - s) / sizeof(double); |
1610 | if (len > along) |
1611 | len = along; |
1612 | if (checksum) { |
1613 | while (len-- > 0) { |
1614 | Copy(s, &adouble, 1, double); |
1615 | s += sizeof(double); |
1616 | cdouble += adouble; |
1617 | } |
1618 | } |
1619 | else { |
49704364 |
1620 | if (len && unpack_only_one) |
c8f824eb |
1621 | len = 1; |
a6ec74c1 |
1622 | EXTEND(SP, len); |
1623 | EXTEND_MORTAL(len); |
1624 | while (len-- > 0) { |
1625 | Copy(s, &adouble, 1, double); |
1626 | s += sizeof(double); |
1627 | sv = NEWSV(48, 0); |
1628 | sv_setnv(sv, (NV)adouble); |
1629 | PUSHs(sv_2mortal(sv)); |
1630 | } |
1631 | } |
1632 | break; |
92d41999 |
1633 | case 'F': |
1634 | along = (strend - s) / NVSIZE; |
1635 | if (len > along) |
1636 | len = along; |
1637 | if (checksum) { |
1638 | while (len-- > 0) { |
1639 | Copy(s, &anv, 1, NV); |
1640 | s += NVSIZE; |
1641 | cdouble += anv; |
1642 | } |
1643 | } |
1644 | else { |
49704364 |
1645 | if (len && unpack_only_one) |
c8f824eb |
1646 | len = 1; |
92d41999 |
1647 | EXTEND(SP, len); |
1648 | EXTEND_MORTAL(len); |
1649 | while (len-- > 0) { |
1650 | Copy(s, &anv, 1, NV); |
1651 | s += NVSIZE; |
1652 | sv = NEWSV(48, 0); |
1653 | sv_setnv(sv, anv); |
1654 | PUSHs(sv_2mortal(sv)); |
1655 | } |
1656 | } |
1657 | break; |
1658 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) |
1659 | case 'D': |
1660 | along = (strend - s) / LONG_DOUBLESIZE; |
1661 | if (len > along) |
1662 | len = along; |
1663 | if (checksum) { |
1664 | while (len-- > 0) { |
1665 | Copy(s, &aldouble, 1, long double); |
1666 | s += LONG_DOUBLESIZE; |
1667 | cdouble += aldouble; |
1668 | } |
1669 | } |
1670 | else { |
49704364 |
1671 | if (len && unpack_only_one) |
c8f824eb |
1672 | len = 1; |
92d41999 |
1673 | EXTEND(SP, len); |
1674 | EXTEND_MORTAL(len); |
1675 | while (len-- > 0) { |
1676 | Copy(s, &aldouble, 1, long double); |
1677 | s += LONG_DOUBLESIZE; |
1678 | sv = NEWSV(48, 0); |
1679 | sv_setnv(sv, (NV)aldouble); |
1680 | PUSHs(sv_2mortal(sv)); |
1681 | } |
1682 | } |
1683 | break; |
1684 | #endif |
a6ec74c1 |
1685 | case 'u': |
1686 | /* MKS: |
1687 | * Initialise the decode mapping. By using a table driven |
1688 | * algorithm, the code will be character-set independent |
1689 | * (and just as fast as doing character arithmetic) |
1690 | */ |
1691 | if (PL_uudmap['M'] == 0) { |
1692 | int i; |
1693 | |
1694 | for (i = 0; i < sizeof(PL_uuemap); i += 1) |
1695 | PL_uudmap[(U8)PL_uuemap[i]] = i; |
1696 | /* |
1697 | * Because ' ' and '`' map to the same value, |
1698 | * we need to decode them both the same. |
1699 | */ |
1700 | PL_uudmap[' '] = 0; |
1701 | } |
1702 | |
1703 | along = (strend - s) * 3 / 4; |
1704 | sv = NEWSV(42, along); |
1705 | if (along) |
1706 | SvPOK_on(sv); |
1707 | while (s < strend && *s > ' ' && ISUUCHAR(*s)) { |
1708 | I32 a, b, c, d; |
1709 | char hunk[4]; |
1710 | |
1711 | hunk[3] = '\0'; |
1712 | len = PL_uudmap[*(U8*)s++] & 077; |
1713 | while (len > 0) { |
1714 | if (s < strend && ISUUCHAR(*s)) |
1715 | a = PL_uudmap[*(U8*)s++] & 077; |
1716 | else |
1717 | a = 0; |
1718 | if (s < strend && ISUUCHAR(*s)) |
1719 | b = PL_uudmap[*(U8*)s++] & 077; |
1720 | else |
1721 | b = 0; |
1722 | if (s < strend && ISUUCHAR(*s)) |
1723 | c = PL_uudmap[*(U8*)s++] & 077; |
1724 | else |
1725 | c = 0; |
1726 | if (s < strend && ISUUCHAR(*s)) |
1727 | d = PL_uudmap[*(U8*)s++] & 077; |
1728 | else |
1729 | d = 0; |
eb160463 |
1730 | hunk[0] = (char)((a << 2) | (b >> 4)); |
1731 | hunk[1] = (char)((b << 4) | (c >> 2)); |
1732 | hunk[2] = (char)((c << 6) | d); |
a6ec74c1 |
1733 | sv_catpvn(sv, hunk, (len > 3) ? 3 : len); |
1734 | len -= 3; |
1735 | } |
1736 | if (*s == '\n') |
1737 | s++; |
92aa5668 |
1738 | else /* possible checksum byte */ |
1739 | if (s + 1 < strend && s[1] == '\n') |
1740 | s += 2; |
a6ec74c1 |
1741 | } |
1742 | XPUSHs(sv_2mortal(sv)); |
1743 | break; |
1744 | } |
49704364 |
1745 | |
a6ec74c1 |
1746 | if (checksum) { |
1747 | sv = NEWSV(42, 0); |
1748 | if (strchr("fFdD", datumtype) || |
92d41999 |
1749 | (checksum > bits_in_uv && |
49704364 |
1750 | strchr("csSiIlLnNUvVqQjJ", datumtype&0xFF)) ) { |
a6ec74c1 |
1751 | NV trouble; |
1752 | |
fa8ec7c1 |
1753 | adouble = (NV) (1 << (checksum & 15)); |
a6ec74c1 |
1754 | while (checksum >= 16) { |
1755 | checksum -= 16; |
1756 | adouble *= 65536.0; |
1757 | } |
a6ec74c1 |
1758 | while (cdouble < 0.0) |
1759 | cdouble += adouble; |
1760 | cdouble = Perl_modf(cdouble / adouble, &trouble) * adouble; |
1761 | sv_setnv(sv, cdouble); |
1762 | } |
1763 | else { |
fa8ec7c1 |
1764 | if (checksum < bits_in_uv) { |
1765 | UV mask = ((UV)1 << checksum) - 1; |
92d41999 |
1766 | cuv &= mask; |
a6ec74c1 |
1767 | } |
92d41999 |
1768 | sv_setuv(sv, cuv); |
a6ec74c1 |
1769 | } |
1770 | XPUSHs(sv_2mortal(sv)); |
1771 | checksum = 0; |
1772 | } |
49704364 |
1773 | |
1774 | if (symptr->flags & FLAG_SLASH){ |
1775 | if (SP - PL_stack_base - start_sp_offset <= 0) |
1776 | Perl_croak(aTHX_ "'/' must follow a numeric type in unpack"); |
1777 | if( next_symbol(symptr) ){ |
1778 | if( symptr->howlen == e_number ) |
1779 | Perl_croak(aTHX_ "Count after length/code in unpack" ); |
1780 | if( beyond ){ |
1781 | /* ...end of char buffer then no decent length available */ |
1782 | Perl_croak(aTHX_ "length/code after end of string in unpack" ); |
1783 | } else { |
1784 | /* take top of stack (hope it's numeric) */ |
1785 | len = POPi; |
1786 | if( len < 0 ) |
1787 | Perl_croak(aTHX_ "Negative '/' count in unpack" ); |
1788 | } |
1789 | } else { |
1790 | Perl_croak(aTHX_ "Code missing after '/' in unpack" ); |
1791 | } |
1792 | datumtype = symptr->code; |
1793 | goto redo_switch; |
1794 | } |
a6ec74c1 |
1795 | } |
49704364 |
1796 | |
18529408 |
1797 | if (new_s) |
1798 | *new_s = s; |
1799 | PUTBACK; |
1800 | return SP - PL_stack_base - start_sp_offset; |
1801 | } |
1802 | |
1803 | PP(pp_unpack) |
1804 | { |
1805 | dSP; |
bab9c0ac |
1806 | dPOPPOPssrl; |
18529408 |
1807 | I32 gimme = GIMME_V; |
1808 | STRLEN llen; |
1809 | STRLEN rlen; |
1810 | register char *pat = SvPV(left, llen); |
1811 | #ifdef PACKED_IS_OCTETS |
1812 | /* Packed side is assumed to be octets - so force downgrade if it |
1813 | has been UTF-8 encoded by accident |
1814 | */ |
1815 | register char *s = SvPVbyte(right, rlen); |
1816 | #else |
1817 | register char *s = SvPV(right, rlen); |
1818 | #endif |
1819 | char *strend = s + rlen; |
1820 | register char *patend = pat + llen; |
1821 | register I32 cnt; |
1822 | |
1823 | PUTBACK; |
7accc089 |
1824 | cnt = unpackstring(pat, patend, s, strend, |
49704364 |
1825 | ((gimme == G_SCALAR) ? FLAG_UNPACK_ONLY_ONE : 0) |
1826 | | (DO_UTF8(right) ? FLAG_UNPACK_DO_UTF8 : 0)); |
1827 | |
18529408 |
1828 | SPAGAIN; |
1829 | if ( !cnt && gimme == G_SCALAR ) |
1830 | PUSHs(&PL_sv_undef); |
a6ec74c1 |
1831 | RETURN; |
1832 | } |
1833 | |
1834 | STATIC void |
1835 | S_doencodes(pTHX_ register SV *sv, register char *s, register I32 len) |
1836 | { |
1837 | char hunk[5]; |
1838 | |
1839 | *hunk = PL_uuemap[len]; |
1840 | sv_catpvn(sv, hunk, 1); |
1841 | hunk[4] = '\0'; |
1842 | while (len > 2) { |
1843 | hunk[0] = PL_uuemap[(077 & (*s >> 2))]; |
1844 | hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((s[1] >> 4) & 017)))]; |
1845 | hunk[2] = PL_uuemap[(077 & (((s[1] << 2) & 074) | ((s[2] >> 6) & 03)))]; |
1846 | hunk[3] = PL_uuemap[(077 & (s[2] & 077))]; |
1847 | sv_catpvn(sv, hunk, 4); |
1848 | s += 3; |
1849 | len -= 3; |
1850 | } |
1851 | if (len > 0) { |
1852 | char r = (len > 1 ? s[1] : '\0'); |
1853 | hunk[0] = PL_uuemap[(077 & (*s >> 2))]; |
1854 | hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((r >> 4) & 017)))]; |
1855 | hunk[2] = PL_uuemap[(077 & ((r << 2) & 074))]; |
1856 | hunk[3] = PL_uuemap[0]; |
1857 | sv_catpvn(sv, hunk, 4); |
1858 | } |
1859 | sv_catpvn(sv, "\n", 1); |
1860 | } |
1861 | |
1862 | STATIC SV * |
1863 | S_is_an_int(pTHX_ char *s, STRLEN l) |
1864 | { |
1865 | STRLEN n_a; |
1866 | SV *result = newSVpvn(s, l); |
1867 | char *result_c = SvPV(result, n_a); /* convenience */ |
1868 | char *out = result_c; |
1869 | bool skip = 1; |
1870 | bool ignore = 0; |
1871 | |
1872 | while (*s) { |
1873 | switch (*s) { |
1874 | case ' ': |
1875 | break; |
1876 | case '+': |
1877 | if (!skip) { |
1878 | SvREFCNT_dec(result); |
1879 | return (NULL); |
1880 | } |
1881 | break; |
1882 | case '0': |
1883 | case '1': |
1884 | case '2': |
1885 | case '3': |
1886 | case '4': |
1887 | case '5': |
1888 | case '6': |
1889 | case '7': |
1890 | case '8': |
1891 | case '9': |
1892 | skip = 0; |
1893 | if (!ignore) { |
1894 | *(out++) = *s; |
1895 | } |
1896 | break; |
1897 | case '.': |
1898 | ignore = 1; |
1899 | break; |
1900 | default: |
1901 | SvREFCNT_dec(result); |
1902 | return (NULL); |
1903 | } |
1904 | s++; |
1905 | } |
1906 | *(out++) = '\0'; |
1907 | SvCUR_set(result, out - result_c); |
1908 | return (result); |
1909 | } |
1910 | |
1911 | /* pnum must be '\0' terminated */ |
1912 | STATIC int |
1913 | S_div128(pTHX_ SV *pnum, bool *done) |
1914 | { |
1915 | STRLEN len; |
1916 | char *s = SvPV(pnum, len); |
1917 | int m = 0; |
1918 | int r = 0; |
1919 | char *t = s; |
1920 | |
1921 | *done = 1; |
1922 | while (*t) { |
1923 | int i; |
1924 | |
1925 | i = m * 10 + (*t - '0'); |
1926 | m = i & 0x7F; |
1927 | r = (i >> 7); /* r < 10 */ |
1928 | if (r) { |
1929 | *done = 0; |
1930 | } |
1931 | *(t++) = '0' + r; |
1932 | } |
1933 | *(t++) = '\0'; |
1934 | SvCUR_set(pnum, (STRLEN) (t - s)); |
1935 | return (m); |
1936 | } |
1937 | |
49704364 |
1938 | |
a6ec74c1 |
1939 | |
18529408 |
1940 | /* |
1941 | =for apidoc pack_cat |
1942 | |
7accc089 |
1943 | The engine implementing pack() Perl function. Note: parameters next_in_list and |
1944 | flags are not used. This call should not be used; use packlist instead. |
18529408 |
1945 | |
1946 | =cut */ |
1947 | |
49704364 |
1948 | |
18529408 |
1949 | void |
1950 | Perl_pack_cat(pTHX_ SV *cat, char *pat, register char *patend, register SV **beglist, SV **endlist, SV ***next_in_list, U32 flags) |
a6ec74c1 |
1951 | { |
49704364 |
1952 | tempsym_t sym = { 0 }; |
1953 | sym.patptr = pat; |
1954 | sym.patend = patend; |
7accc089 |
1955 | sym.flags = FLAG_PACK; |
1956 | |
1957 | (void)pack_rec( cat, &sym, beglist, endlist ); |
1958 | } |
1959 | |
1960 | |
1961 | /* |
1962 | =for apidoc packlist |
1963 | |
1964 | The engine implementing pack() Perl function. |
1965 | |
1966 | =cut */ |
1967 | |
1968 | |
1969 | void |
1970 | Perl_packlist(pTHX_ SV *cat, char *pat, register char *patend, register SV **beglist, SV **endlist ) |
1971 | { |
1972 | tempsym_t sym = { 0 }; |
1973 | sym.patptr = pat; |
1974 | sym.patend = patend; |
1975 | sym.flags = FLAG_PACK; |
49704364 |
1976 | |
1977 | (void)pack_rec( cat, &sym, beglist, endlist ); |
1978 | } |
1979 | |
1980 | |
1981 | STATIC |
1982 | SV ** |
1983 | S_pack_rec(pTHX_ SV *cat, register tempsym_t* symptr, register SV **beglist, SV **endlist ) |
1984 | { |
a6ec74c1 |
1985 | register I32 items; |
1986 | STRLEN fromlen; |
49704364 |
1987 | register I32 len = 0; |
a6ec74c1 |
1988 | SV *fromstr; |
1989 | /*SUPPRESS 442*/ |
1990 | static char null10[] = {0,0,0,0,0,0,0,0,0,0}; |
1991 | static char *space10 = " "; |
49704364 |
1992 | bool found; |
a6ec74c1 |
1993 | |
1994 | /* These must not be in registers: */ |
1995 | char achar; |
1996 | I16 ashort; |
1997 | int aint; |
1998 | unsigned int auint; |
1999 | I32 along; |
2000 | U32 aulong; |
92d41999 |
2001 | IV aiv; |
2002 | UV auv; |
2003 | NV anv; |
2004 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) |
2005 | long double aldouble; |
2006 | #endif |
a6ec74c1 |
2007 | #ifdef HAS_QUAD |
2008 | Quad_t aquad; |
2009 | Uquad_t auquad; |
2010 | #endif |
2011 | char *aptr; |
2012 | float afloat; |
2013 | double adouble; |
49704364 |
2014 | int strrelbeg = SvCUR(cat); |
2015 | tempsym_t lookahead; |
a6ec74c1 |
2016 | |
18529408 |
2017 | items = endlist - beglist; |
49704364 |
2018 | found = next_symbol( symptr ); |
2019 | |
18529408 |
2020 | #ifndef PACKED_IS_OCTETS |
49704364 |
2021 | if (symptr->level == 0 && found && symptr->code == 'U' ){ |
18529408 |
2022 | SvUTF8_on(cat); |
49704364 |
2023 | } |
18529408 |
2024 | #endif |
49704364 |
2025 | |
2026 | while (found) { |
a6ec74c1 |
2027 | SV *lengthcode = Nullsv; |
18529408 |
2028 | #define NEXTFROM ( lengthcode ? lengthcode : items-- > 0 ? *beglist++ : &PL_sv_no) |
49704364 |
2029 | |
2030 | I32 datumtype = symptr->code; |
2031 | howlen_t howlen; |
2032 | |
2033 | switch( howlen = symptr->howlen ){ |
2034 | case e_no_len: |
2035 | case e_number: |
2036 | len = symptr->length; |
2037 | break; |
2038 | case e_star: |
2039 | len = strchr("@Xxu", datumtype) ? 0 : items; |
2040 | break; |
2041 | } |
2042 | |
2043 | /* Look ahead for next symbol. Do we have code/code? */ |
2044 | lookahead = *symptr; |
2045 | found = next_symbol(&lookahead); |
2046 | if ( symptr->flags & FLAG_SLASH ) { |
2047 | if (found){ |
2048 | if ( 0 == strchr( "aAZ", lookahead.code ) || |
2049 | e_star != lookahead.howlen ) |
2050 | Perl_croak(aTHX_ "'/' must be followed by 'a*', 'A*' or 'Z*' in pack"); |
2051 | lengthcode = sv_2mortal(newSViv(sv_len(items > 0 |
18529408 |
2052 | ? *beglist : &PL_sv_no) |
49704364 |
2053 | + (lookahead.code == 'Z' ? 1 : 0))); |
2054 | } else { |
2055 | Perl_croak(aTHX_ "Code missing after '/' in pack"); |
2056 | } |
a6ec74c1 |
2057 | } |
49704364 |
2058 | |
a6ec74c1 |
2059 | switch(datumtype) { |
2060 | default: |
49704364 |
2061 | Perl_croak(aTHX_ "Invalid type '%c' in pack", (int)datumtype); |
a6ec74c1 |
2062 | case '%': |
49704364 |
2063 | Perl_croak(aTHX_ "'%%' may not be used in pack"); |
a6ec74c1 |
2064 | case '@': |
49704364 |
2065 | len += strrelbeg - SvCUR(cat); |
a6ec74c1 |
2066 | if (len > 0) |
2067 | goto grow; |
2068 | len = -len; |
2069 | if (len > 0) |
2070 | goto shrink; |
2071 | break; |
18529408 |
2072 | case '(': |
2073 | { |
49704364 |
2074 | tempsym_t savsym = *symptr; |
2075 | symptr->patend = savsym.grpend; |
2076 | symptr->level++; |
18529408 |
2077 | while (len--) { |
49704364 |
2078 | symptr->patptr = savsym.grpbeg; |
2079 | beglist = pack_rec(cat, symptr, beglist, endlist ); |
2080 | if (savsym.howlen == e_star && beglist == endlist) |
18529408 |
2081 | break; /* No way to continue */ |
2082 | } |
49704364 |
2083 | lookahead.flags = symptr->flags; |
2084 | *symptr = savsym; |
18529408 |
2085 | break; |
2086 | } |
62f95557 |
2087 | case 'X' | TYPE_IS_SHRIEKING: |
2088 | if (!len) /* Avoid division by 0 */ |
2089 | len = 1; |
2090 | len = (SvCUR(cat)) % len; |
2091 | /* FALL THROUGH */ |
a6ec74c1 |
2092 | case 'X': |
2093 | shrink: |
eb160463 |
2094 | if ((I32)SvCUR(cat) < len) |
49704364 |
2095 | Perl_croak(aTHX_ "'X' outside of string in pack"); |
a6ec74c1 |
2096 | SvCUR(cat) -= len; |
2097 | *SvEND(cat) = '\0'; |
2098 | break; |
62f95557 |
2099 | case 'x' | TYPE_IS_SHRIEKING: |
2100 | if (!len) /* Avoid division by 0 */ |
2101 | len = 1; |
2102 | aint = (SvCUR(cat)) % len; |
2103 | if (aint) /* Other portable ways? */ |
2104 | len = len - aint; |
2105 | else |
2106 | len = 0; |
2107 | /* FALL THROUGH */ |
49704364 |
2108 | |
a6ec74c1 |
2109 | case 'x': |
2110 | grow: |
2111 | while (len >= 10) { |
2112 | sv_catpvn(cat, null10, 10); |
2113 | len -= 10; |
2114 | } |
2115 | sv_catpvn(cat, null10, len); |
2116 | break; |
2117 | case 'A': |
2118 | case 'Z': |
2119 | case 'a': |
2120 | fromstr = NEXTFROM; |
2121 | aptr = SvPV(fromstr, fromlen); |
49704364 |
2122 | if (howlen == e_star) { |
a6ec74c1 |
2123 | len = fromlen; |
2124 | if (datumtype == 'Z') |
2125 | ++len; |
2126 | } |
eb160463 |
2127 | if ((I32)fromlen >= len) { |
a6ec74c1 |
2128 | sv_catpvn(cat, aptr, len); |
2129 | if (datumtype == 'Z') |
2130 | *(SvEND(cat)-1) = '\0'; |
2131 | } |
2132 | else { |
2133 | sv_catpvn(cat, aptr, fromlen); |
2134 | len -= fromlen; |
2135 | if (datumtype == 'A') { |
2136 | while (len >= 10) { |
2137 | sv_catpvn(cat, space10, 10); |
2138 | len -= 10; |
2139 | } |
2140 | sv_catpvn(cat, space10, len); |
2141 | } |
2142 | else { |
2143 | while (len >= 10) { |
2144 | sv_catpvn(cat, null10, 10); |
2145 | len -= 10; |
2146 | } |
2147 | sv_catpvn(cat, null10, len); |
2148 | } |
2149 | } |
2150 | break; |
2151 | case 'B': |
2152 | case 'b': |
2153 | { |
2154 | register char *str; |
2155 | I32 saveitems; |
2156 | |
2157 | fromstr = NEXTFROM; |
2158 | saveitems = items; |
2159 | str = SvPV(fromstr, fromlen); |
49704364 |
2160 | if (howlen == e_star) |
a6ec74c1 |
2161 | len = fromlen; |
2162 | aint = SvCUR(cat); |
2163 | SvCUR(cat) += (len+7)/8; |
2164 | SvGROW(cat, SvCUR(cat) + 1); |
2165 | aptr = SvPVX(cat) + aint; |
eb160463 |
2166 | if (len > (I32)fromlen) |
a6ec74c1 |
2167 | len = fromlen; |
2168 | aint = len; |
2169 | items = 0; |
2170 | if (datumtype == 'B') { |
2171 | for (len = 0; len++ < aint;) { |
2172 | items |= *str++ & 1; |
2173 | if (len & 7) |
2174 | items <<= 1; |
2175 | else { |
2176 | *aptr++ = items & 0xff; |
2177 | items = 0; |
2178 | } |
2179 | } |
2180 | } |
2181 | else { |
2182 | for (len = 0; len++ < aint;) { |
2183 | if (*str++ & 1) |
2184 | items |= 128; |
2185 | if (len & 7) |
2186 | items >>= 1; |
2187 | else { |
2188 | *aptr++ = items & 0xff; |
2189 | items = 0; |
2190 | } |
2191 | } |
2192 | } |
2193 | if (aint & 7) { |
2194 | if (datumtype == 'B') |
2195 | items <<= 7 - (aint & 7); |
2196 | else |
2197 | items >>= 7 - (aint & 7); |
2198 | *aptr++ = items & 0xff; |
2199 | } |
2200 | str = SvPVX(cat) + SvCUR(cat); |
2201 | while (aptr <= str) |
2202 | *aptr++ = '\0'; |
2203 | |
2204 | items = saveitems; |
2205 | } |
2206 | break; |
2207 | case 'H': |
2208 | case 'h': |
2209 | { |
2210 | register char *str; |
2211 | I32 saveitems; |
2212 | |
2213 | fromstr = NEXTFROM; |
2214 | saveitems = items; |
2215 | str = SvPV(fromstr, fromlen); |
49704364 |
2216 | if (howlen == e_star) |
a6ec74c1 |
2217 | len = fromlen; |
2218 | aint = SvCUR(cat); |
2219 | SvCUR(cat) += (len+1)/2; |
2220 | SvGROW(cat, SvCUR(cat) + 1); |
2221 | aptr = SvPVX(cat) + aint; |
eb160463 |
2222 | if (len > (I32)fromlen) |
a6ec74c1 |
2223 | len = fromlen; |
2224 | aint = len; |
2225 | items = 0; |
2226 | if (datumtype == 'H') { |
2227 | for (len = 0; len++ < aint;) { |
2228 | if (isALPHA(*str)) |
2229 | items |= ((*str++ & 15) + 9) & 15; |
2230 | else |
2231 | items |= *str++ & 15; |
2232 | if (len & 1) |
2233 | items <<= 4; |
2234 | else { |
2235 | *aptr++ = items & 0xff; |
2236 | items = 0; |
2237 | } |
2238 | } |
2239 | } |
2240 | else { |
2241 | for (len = 0; len++ < aint;) { |
2242 | if (isALPHA(*str)) |
2243 | items |= (((*str++ & 15) + 9) & 15) << 4; |
2244 | else |
2245 | items |= (*str++ & 15) << 4; |
2246 | if (len & 1) |
2247 | items >>= 4; |
2248 | else { |
2249 | *aptr++ = items & 0xff; |
2250 | items = 0; |
2251 | } |
2252 | } |
2253 | } |
2254 | if (aint & 1) |
2255 | *aptr++ = items & 0xff; |
2256 | str = SvPVX(cat) + SvCUR(cat); |
2257 | while (aptr <= str) |
2258 | *aptr++ = '\0'; |
2259 | |
2260 | items = saveitems; |
2261 | } |
2262 | break; |
2263 | case 'C': |
2264 | case 'c': |
2265 | while (len-- > 0) { |
2266 | fromstr = NEXTFROM; |
2267 | switch (datumtype) { |
2268 | case 'C': |
2269 | aint = SvIV(fromstr); |
2270 | if ((aint < 0 || aint > 255) && |
2271 | ckWARN(WARN_PACK)) |
9014280d |
2272 | Perl_warner(aTHX_ packWARN(WARN_PACK), |
49704364 |
2273 | "Character in 'C' format wrapped in pack"); |
a6ec74c1 |
2274 | achar = aint & 255; |
2275 | sv_catpvn(cat, &achar, sizeof(char)); |
2276 | break; |
2277 | case 'c': |
2278 | aint = SvIV(fromstr); |
2279 | if ((aint < -128 || aint > 127) && |
2280 | ckWARN(WARN_PACK)) |
9014280d |
2281 | Perl_warner(aTHX_ packWARN(WARN_PACK), |
49704364 |
2282 | "Character in 'c' format wrapped in pack" ); |
a6ec74c1 |
2283 | achar = aint & 255; |
2284 | sv_catpvn(cat, &achar, sizeof(char)); |
2285 | break; |
2286 | } |
2287 | } |
2288 | break; |
2289 | case 'U': |
2290 | while (len-- > 0) { |
2291 | fromstr = NEXTFROM; |
e87322b2 |
2292 | auint = UNI_TO_NATIVE(SvUV(fromstr)); |
a6ec74c1 |
2293 | SvGROW(cat, SvCUR(cat) + UTF8_MAXLEN + 1); |
52ea3e69 |
2294 | SvCUR_set(cat, |
2295 | (char*)uvchr_to_utf8_flags((U8*)SvEND(cat), |
2296 | auint, |
2297 | ckWARN(WARN_UTF8) ? |
2298 | 0 : UNICODE_ALLOW_ANY) |
2299 | - SvPVX(cat)); |
a6ec74c1 |
2300 | } |
2301 | *SvEND(cat) = '\0'; |
2302 | break; |
2303 | /* Float and double added by gnb@melba.bby.oz.au 22/11/89 */ |
2304 | case 'f': |
a6ec74c1 |
2305 | while (len-- > 0) { |
2306 | fromstr = NEXTFROM; |
5cdb9e01 |
2307 | #ifdef __VOS__ |
2308 | /* VOS does not automatically map a floating-point overflow |
2309 | during conversion from double to float into infinity, so we |
2310 | do it by hand. This code should either be generalized for |
2311 | any OS that needs it, or removed if and when VOS implements |
2312 | posix-976 (suggestion to support mapping to infinity). |
2313 | Paul.Green@stratus.com 02-04-02. */ |
2314 | if (SvNV(fromstr) > FLT_MAX) |
2315 | afloat = _float_constants[0]; /* single prec. inf. */ |
2316 | else if (SvNV(fromstr) < -FLT_MAX) |
2317 | afloat = _float_constants[0]; /* single prec. inf. */ |
2318 | else afloat = (float)SvNV(fromstr); |
2319 | #else |
baf3cf9c |
2320 | # if defined(VMS) && !defined(__IEEE_FP) |
2321 | /* IEEE fp overflow shenanigans are unavailable on VAX and optional |
2322 | * on Alpha; fake it if we don't have them. |
2323 | */ |
2324 | if (SvNV(fromstr) > FLT_MAX) |
2325 | afloat = FLT_MAX; |
2326 | else if (SvNV(fromstr) < -FLT_MAX) |
2327 | afloat = -FLT_MAX; |
2328 | else afloat = (float)SvNV(fromstr); |
2329 | # else |
a6ec74c1 |
2330 | afloat = (float)SvNV(fromstr); |
baf3cf9c |
2331 | # endif |
5cdb9e01 |
2332 | #endif |
a6ec74c1 |
2333 | sv_catpvn(cat, (char *)&afloat, sizeof (float)); |
2334 | } |
2335 | break; |
2336 | case 'd': |
a6ec74c1 |
2337 | while (len-- > 0) { |
2338 | fromstr = NEXTFROM; |
5cdb9e01 |
2339 | #ifdef __VOS__ |
2340 | /* VOS does not automatically map a floating-point overflow |
2341 | during conversion from long double to double into infinity, |
2342 | so we do it by hand. This code should either be generalized |
2343 | for any OS that needs it, or removed if and when VOS |
2344 | implements posix-976 (suggestion to support mapping to |
2345 | infinity). Paul.Green@stratus.com 02-04-02. */ |
2346 | if (SvNV(fromstr) > DBL_MAX) |
2347 | adouble = _double_constants[0]; /* double prec. inf. */ |
2348 | else if (SvNV(fromstr) < -DBL_MAX) |
2349 | adouble = _double_constants[0]; /* double prec. inf. */ |
2350 | else adouble = (double)SvNV(fromstr); |
2351 | #else |
baf3cf9c |
2352 | # if defined(VMS) && !defined(__IEEE_FP) |
2353 | /* IEEE fp overflow shenanigans are unavailable on VAX and optional |
2354 | * on Alpha; fake it if we don't have them. |
2355 | */ |
2356 | if (SvNV(fromstr) > DBL_MAX) |
2357 | adouble = DBL_MAX; |
2358 | else if (SvNV(fromstr) < -DBL_MAX) |
2359 | adouble = -DBL_MAX; |
2360 | else adouble = (double)SvNV(fromstr); |
2361 | # else |
a6ec74c1 |
2362 | adouble = (double)SvNV(fromstr); |
baf3cf9c |
2363 | # endif |
5cdb9e01 |
2364 | #endif |
a6ec74c1 |
2365 | sv_catpvn(cat, (char *)&adouble, sizeof (double)); |
2366 | } |
2367 | break; |
92d41999 |
2368 | case 'F': |
2369 | while (len-- > 0) { |
2370 | fromstr = NEXTFROM; |
2371 | anv = SvNV(fromstr); |
2372 | sv_catpvn(cat, (char *)&anv, NVSIZE); |
2373 | } |
2374 | break; |
2375 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) |
2376 | case 'D': |
2377 | while (len-- > 0) { |
2378 | fromstr = NEXTFROM; |
2379 | aldouble = (long double)SvNV(fromstr); |
2380 | sv_catpvn(cat, (char *)&aldouble, LONG_DOUBLESIZE); |
2381 | } |
2382 | break; |
2383 | #endif |
068bd2e7 |
2384 | case 'n' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2385 | case 'n': |
2386 | while (len-- > 0) { |
2387 | fromstr = NEXTFROM; |
2388 | ashort = (I16)SvIV(fromstr); |
2389 | #ifdef HAS_HTONS |
2390 | ashort = PerlSock_htons(ashort); |
2391 | #endif |
2392 | CAT16(cat, &ashort); |
2393 | } |
2394 | break; |
068bd2e7 |
2395 | case 'v' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2396 | case 'v': |
2397 | while (len-- > 0) { |
2398 | fromstr = NEXTFROM; |
2399 | ashort = (I16)SvIV(fromstr); |
2400 | #ifdef HAS_HTOVS |
2401 | ashort = htovs(ashort); |
2402 | #endif |
2403 | CAT16(cat, &ashort); |
2404 | } |
2405 | break; |
49704364 |
2406 | case 'S' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2407 | #if SHORTSIZE != SIZE16 |
49704364 |
2408 | { |
a6ec74c1 |
2409 | unsigned short aushort; |
2410 | |
2411 | while (len-- > 0) { |
2412 | fromstr = NEXTFROM; |
2413 | aushort = SvUV(fromstr); |
2414 | sv_catpvn(cat, (char *)&aushort, sizeof(unsigned short)); |
2415 | } |
49704364 |
2416 | } |
2417 | break; |
2418 | #else |
2419 | /* Fall through! */ |
a6ec74c1 |
2420 | #endif |
49704364 |
2421 | case 'S': |
a6ec74c1 |
2422 | { |
2423 | U16 aushort; |
2424 | |
2425 | while (len-- > 0) { |
2426 | fromstr = NEXTFROM; |
2427 | aushort = (U16)SvUV(fromstr); |
2428 | CAT16(cat, &aushort); |
2429 | } |
2430 | |
2431 | } |
2432 | break; |
49704364 |
2433 | case 's' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2434 | #if SHORTSIZE != SIZE16 |
49704364 |
2435 | { |
a6ec74c1 |
2436 | short ashort; |
2437 | |
2438 | while (len-- > 0) { |
2439 | fromstr = NEXTFROM; |
2440 | ashort = SvIV(fromstr); |
2441 | sv_catpvn(cat, (char *)&ashort, sizeof(short)); |
2442 | } |
2443 | } |
49704364 |
2444 | break; |
2445 | #else |
2446 | /* Fall through! */ |
a6ec74c1 |
2447 | #endif |
49704364 |
2448 | case 's': |
2449 | while (len-- > 0) { |
2450 | fromstr = NEXTFROM; |
2451 | ashort = (I16)SvIV(fromstr); |
2452 | CAT16(cat, &ashort); |
a6ec74c1 |
2453 | } |
2454 | break; |
2455 | case 'I': |
49704364 |
2456 | case 'I' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2457 | while (len-- > 0) { |
2458 | fromstr = NEXTFROM; |
2459 | auint = SvUV(fromstr); |
2460 | sv_catpvn(cat, (char*)&auint, sizeof(unsigned int)); |
2461 | } |
2462 | break; |
92d41999 |
2463 | case 'j': |
2464 | while (len-- > 0) { |
2465 | fromstr = NEXTFROM; |
2466 | aiv = SvIV(fromstr); |
2467 | sv_catpvn(cat, (char*)&aiv, IVSIZE); |
2468 | } |
2469 | break; |
2470 | case 'J': |
2471 | while (len-- > 0) { |
2472 | fromstr = NEXTFROM; |
2473 | auv = SvUV(fromstr); |
2474 | sv_catpvn(cat, (char*)&auv, UVSIZE); |
2475 | } |
2476 | break; |
a6ec74c1 |
2477 | case 'w': |
2478 | while (len-- > 0) { |
2479 | fromstr = NEXTFROM; |
15e9f109 |
2480 | anv = SvNV(fromstr); |
a6ec74c1 |
2481 | |
15e9f109 |
2482 | if (anv < 0) |
49704364 |
2483 | Perl_croak(aTHX_ "Cannot compress negative numbers in pack"); |
a6ec74c1 |
2484 | |
196b62db |
2485 | /* 0xFFFFFFFFFFFFFFFF may cast to 18446744073709551616.0, |
2486 | which is == UV_MAX_P1. IOK is fine (instead of UV_only), as |
2487 | any negative IVs will have already been got by the croak() |
2488 | above. IOK is untrue for fractions, so we test them |
2489 | against UV_MAX_P1. */ |
15e9f109 |
2490 | if (SvIOK(fromstr) || anv < UV_MAX_P1) |
a6ec74c1 |
2491 | { |
7c1b502b |
2492 | char buf[(sizeof(UV)*8)/7+1]; |
a6ec74c1 |
2493 | char *in = buf + sizeof(buf); |
196b62db |
2494 | UV auv = SvUV(fromstr); |
a6ec74c1 |
2495 | |
2496 | do { |
eb160463 |
2497 | *--in = (char)((auv & 0x7f) | 0x80); |
a6ec74c1 |
2498 | auv >>= 7; |
2499 | } while (auv); |
2500 | buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */ |
2501 | sv_catpvn(cat, in, (buf + sizeof(buf)) - in); |
2502 | } |
2503 | else if (SvPOKp(fromstr)) { /* decimal string arithmetics */ |
2504 | char *from, *result, *in; |
2505 | SV *norm; |
2506 | STRLEN len; |
2507 | bool done; |
2508 | |
2509 | /* Copy string and check for compliance */ |
2510 | from = SvPV(fromstr, len); |
2511 | if ((norm = is_an_int(from, len)) == NULL) |
49704364 |
2512 | Perl_croak(aTHX_ "Can only compress unsigned integers in pack"); |
a6ec74c1 |
2513 | |
2514 | New('w', result, len, char); |
2515 | in = result + len; |
2516 | done = FALSE; |
2517 | while (!done) |
2518 | *--in = div128(norm, &done) | 0x80; |
2519 | result[len - 1] &= 0x7F; /* clear continue bit */ |
2520 | sv_catpvn(cat, in, (result + len) - in); |
2521 | Safefree(result); |
2522 | SvREFCNT_dec(norm); /* free norm */ |
2523 | } |
2524 | else if (SvNOKp(fromstr)) { |
0258719b |
2525 | /* 10**NV_MAX_10_EXP is the largest power of 10 |
2526 | so 10**(NV_MAX_10_EXP+1) is definately unrepresentable |
2527 | given 10**(NV_MAX_10_EXP+1) == 128 ** x solve for x: |
2528 | x = (NV_MAX_10_EXP+1) * log (10) / log (128) |
2529 | And with that many bytes only Inf can overflow. |
8f8d40ab |
2530 | Some C compilers are strict about integral constant |
2531 | expressions so we conservatively divide by a slightly |
2532 | smaller integer instead of multiplying by the exact |
2533 | floating-point value. |
0258719b |
2534 | */ |
2535 | #ifdef NV_MAX_10_EXP |
8f8d40ab |
2536 | /* char buf[1 + (int)((NV_MAX_10_EXP + 1) * 0.47456)]; -- invalid C */ |
2537 | char buf[1 + (int)((NV_MAX_10_EXP + 1) / 2)]; /* valid C */ |
0258719b |
2538 | #else |
8f8d40ab |
2539 | /* char buf[1 + (int)((308 + 1) * 0.47456)]; -- invalid C */ |
2540 | char buf[1 + (int)((308 + 1) / 2)]; /* valid C */ |
0258719b |
2541 | #endif |
a6ec74c1 |
2542 | char *in = buf + sizeof(buf); |
2543 | |
15e9f109 |
2544 | anv = Perl_floor(anv); |
a6ec74c1 |
2545 | do { |
15e9f109 |
2546 | NV next = Perl_floor(anv / 128); |
a6ec74c1 |
2547 | if (in <= buf) /* this cannot happen ;-) */ |
49704364 |
2548 | Perl_croak(aTHX_ "Cannot compress integer in pack"); |
0258719b |
2549 | *--in = (unsigned char)(anv - (next * 128)) | 0x80; |
15e9f109 |
2550 | anv = next; |
2551 | } while (anv > 0); |
a6ec74c1 |
2552 | buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */ |
2553 | sv_catpvn(cat, in, (buf + sizeof(buf)) - in); |
2554 | } |
735b914b |
2555 | else { |
2556 | char *from, *result, *in; |
2557 | SV *norm; |
2558 | STRLEN len; |
2559 | bool done; |
2560 | |
2561 | /* Copy string and check for compliance */ |
2562 | from = SvPV(fromstr, len); |
2563 | if ((norm = is_an_int(from, len)) == NULL) |
49704364 |
2564 | Perl_croak(aTHX_ "Can only compress unsigned integers in pack"); |
735b914b |
2565 | |
2566 | New('w', result, len, char); |
2567 | in = result + len; |
2568 | done = FALSE; |
2569 | while (!done) |
2570 | *--in = div128(norm, &done) | 0x80; |
2571 | result[len - 1] &= 0x7F; /* clear continue bit */ |
2572 | sv_catpvn(cat, in, (result + len) - in); |
2573 | Safefree(result); |
2574 | SvREFCNT_dec(norm); /* free norm */ |
2575 | } |
a6ec74c1 |
2576 | } |
2577 | break; |
2578 | case 'i': |
49704364 |
2579 | case 'i' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2580 | while (len-- > 0) { |
2581 | fromstr = NEXTFROM; |
2582 | aint = SvIV(fromstr); |
2583 | sv_catpvn(cat, (char*)&aint, sizeof(int)); |
2584 | } |
2585 | break; |
068bd2e7 |
2586 | case 'N' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2587 | case 'N': |
2588 | while (len-- > 0) { |
2589 | fromstr = NEXTFROM; |
2590 | aulong = SvUV(fromstr); |
2591 | #ifdef HAS_HTONL |
2592 | aulong = PerlSock_htonl(aulong); |
2593 | #endif |
2594 | CAT32(cat, &aulong); |
2595 | } |
2596 | break; |
068bd2e7 |
2597 | case 'V' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2598 | case 'V': |
2599 | while (len-- > 0) { |
2600 | fromstr = NEXTFROM; |
2601 | aulong = SvUV(fromstr); |
2602 | #ifdef HAS_HTOVL |
2603 | aulong = htovl(aulong); |
2604 | #endif |
2605 | CAT32(cat, &aulong); |
2606 | } |
2607 | break; |
49704364 |
2608 | case 'L' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2609 | #if LONGSIZE != SIZE32 |
49704364 |
2610 | { |
a6ec74c1 |
2611 | unsigned long aulong; |
2612 | |
2613 | while (len-- > 0) { |
2614 | fromstr = NEXTFROM; |
2615 | aulong = SvUV(fromstr); |
2616 | sv_catpvn(cat, (char *)&aulong, sizeof(unsigned long)); |
2617 | } |
2618 | } |
49704364 |
2619 | break; |
2620 | #else |
2621 | /* Fall though! */ |
a6ec74c1 |
2622 | #endif |
49704364 |
2623 | case 'L': |
a6ec74c1 |
2624 | { |
2625 | while (len-- > 0) { |
2626 | fromstr = NEXTFROM; |
2627 | aulong = SvUV(fromstr); |
2628 | CAT32(cat, &aulong); |
2629 | } |
2630 | } |
2631 | break; |
49704364 |
2632 | case 'l' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2633 | #if LONGSIZE != SIZE32 |
49704364 |
2634 | { |
a6ec74c1 |
2635 | long along; |
2636 | |
2637 | while (len-- > 0) { |
2638 | fromstr = NEXTFROM; |
2639 | along = SvIV(fromstr); |
2640 | sv_catpvn(cat, (char *)&along, sizeof(long)); |
2641 | } |
2642 | } |
49704364 |
2643 | break; |
2644 | #else |
2645 | /* Fall though! */ |
a6ec74c1 |
2646 | #endif |
49704364 |
2647 | case 'l': |
2648 | while (len-- > 0) { |
2649 | fromstr = NEXTFROM; |
2650 | along = SvIV(fromstr); |
2651 | CAT32(cat, &along); |
a6ec74c1 |
2652 | } |
2653 | break; |
2654 | #ifdef HAS_QUAD |
2655 | case 'Q': |
2656 | while (len-- > 0) { |
2657 | fromstr = NEXTFROM; |
2658 | auquad = (Uquad_t)SvUV(fromstr); |
2659 | sv_catpvn(cat, (char*)&auquad, sizeof(Uquad_t)); |
2660 | } |
2661 | break; |
2662 | case 'q': |
2663 | while (len-- > 0) { |
2664 | fromstr = NEXTFROM; |
2665 | aquad = (Quad_t)SvIV(fromstr); |
2666 | sv_catpvn(cat, (char*)&aquad, sizeof(Quad_t)); |
2667 | } |
2668 | break; |
2669 | #endif |
2670 | case 'P': |
2671 | len = 1; /* assume SV is correct length */ |
49704364 |
2672 | /* Fall through! */ |
a6ec74c1 |
2673 | case 'p': |
2674 | while (len-- > 0) { |
2675 | fromstr = NEXTFROM; |
2676 | if (fromstr == &PL_sv_undef) |
2677 | aptr = NULL; |
2678 | else { |
2679 | STRLEN n_a; |
2680 | /* XXX better yet, could spirit away the string to |
2681 | * a safe spot and hang on to it until the result |
2682 | * of pack() (and all copies of the result) are |
2683 | * gone. |
2684 | */ |
2685 | if (ckWARN(WARN_PACK) && (SvTEMP(fromstr) |
2686 | || (SvPADTMP(fromstr) |
2687 | && !SvREADONLY(fromstr)))) |
2688 | { |
9014280d |
2689 | Perl_warner(aTHX_ packWARN(WARN_PACK), |
a6ec74c1 |
2690 | "Attempt to pack pointer to temporary value"); |
2691 | } |
2692 | if (SvPOK(fromstr) || SvNIOK(fromstr)) |
2693 | aptr = SvPV(fromstr,n_a); |
2694 | else |
2695 | aptr = SvPV_force(fromstr,n_a); |
2696 | } |
2697 | sv_catpvn(cat, (char*)&aptr, sizeof(char*)); |
2698 | } |
2699 | break; |
2700 | case 'u': |
2701 | fromstr = NEXTFROM; |
2702 | aptr = SvPV(fromstr, fromlen); |
2703 | SvGROW(cat, fromlen * 4 / 3); |
19c9db5e |
2704 | if (len <= 2) |
a6ec74c1 |
2705 | len = 45; |
2706 | else |
2707 | len = len / 3 * 3; |
2708 | while (fromlen > 0) { |
2709 | I32 todo; |
2710 | |
eb160463 |
2711 | if ((I32)fromlen > len) |
a6ec74c1 |
2712 | todo = len; |
2713 | else |
2714 | todo = fromlen; |
2715 | doencodes(cat, aptr, todo); |
2716 | fromlen -= todo; |
2717 | aptr += todo; |
2718 | } |
2719 | break; |
2720 | } |
49704364 |
2721 | *symptr = lookahead; |
a6ec74c1 |
2722 | } |
49704364 |
2723 | return beglist; |
18529408 |
2724 | } |
2725 | #undef NEXTFROM |
2726 | |
2727 | |
2728 | PP(pp_pack) |
2729 | { |
2730 | dSP; dMARK; dORIGMARK; dTARGET; |
2731 | register SV *cat = TARG; |
2732 | STRLEN fromlen; |
2733 | register char *pat = SvPVx(*++MARK, fromlen); |
2734 | register char *patend = pat + fromlen; |
2735 | |
2736 | MARK++; |
2737 | sv_setpvn(cat, "", 0); |
2738 | |
7accc089 |
2739 | packlist(cat, pat, patend, MARK, SP + 1); |
18529408 |
2740 | |
a6ec74c1 |
2741 | SvSETMAGIC(cat); |
2742 | SP = ORIGMARK; |
2743 | PUSHs(cat); |
2744 | RETURN; |
2745 | } |
a6ec74c1 |
2746 | |