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 |
206947d2 |
247 | case 'v': |
248 | case 'n': |
249 | case 'S': |
206947d2 |
250 | size = SIZE16; |
206947d2 |
251 | break; |
49704364 |
252 | case 'i' | TYPE_IS_SHRIEKING: |
206947d2 |
253 | case 'i': |
254 | size = sizeof(int); |
255 | break; |
49704364 |
256 | case 'I' | TYPE_IS_SHRIEKING: |
206947d2 |
257 | case 'I': |
258 | size = sizeof(unsigned int); |
259 | break; |
92d41999 |
260 | case 'j': |
261 | size = IVSIZE; |
262 | break; |
263 | case 'J': |
264 | size = UVSIZE; |
265 | break; |
49704364 |
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 |
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 |
283 | case 'V': |
284 | case 'N': |
285 | case 'L': |
206947d2 |
286 | size = SIZE32; |
206947d2 |
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 |
303 | size = sizeof(float); |
304 | break; |
305 | case 'd': |
206947d2 |
306 | size = sizeof(double); |
307 | break; |
92d41999 |
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 |
316 | } |
317 | total += len * size; |
318 | } |
319 | return total; |
320 | } |
321 | |
49704364 |
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 |
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 |
345 | Perl_croak(aTHX_ "No group ending character '%c' found in template", |
346 | ender); |
347 | return 0; |
18529408 |
348 | } |
349 | |
49704364 |
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 |
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 |
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 |
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 |
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 |
489 | } |
490 | symptr->patptr = patptr; |
491 | return FALSE; |
18529408 |
492 | } |
493 | |
18529408 |
494 | /* |
495 | =for apidoc unpack_str |
496 | |
7accc089 |
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 |
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 |
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 |
513 | /* |
514 | =for apidoc unpackstring |
515 | |
608d3aed |
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 |
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 |
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 |
540 | register I32 bits = 0; |
541 | register char *str; |
18529408 |
542 | SV *sv; |
543 | I32 start_sp_offset = SP - PL_stack_base; |
49704364 |
544 | howlen_t howlen; |
a6ec74c1 |
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 |
566 | char* strrelbeg = s; |
567 | bool beyond = FALSE; |
568 | bool unpack_only_one = (symptr->flags & FLAG_UNPACK_ONLY_ONE) != 0; |
569 | |
92d41999 |
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 |
577 | while (next_symbol(symptr)) { |
578 | datumtype = symptr->code; |
206947d2 |
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 |
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 |
599 | switch(datumtype) { |
600 | default: |
49704364 |
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 |
611 | case '(': |
612 | { |
18529408 |
613 | char *ss = s; /* Move from register */ |
49704364 |
614 | tempsym_t savsym = *symptr; |
615 | symptr->patend = savsym.grpend; |
616 | symptr->level++; |
18529408 |
617 | PUTBACK; |
618 | while (len--) { |
49704364 |
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 |
623 | } |
624 | SPAGAIN; |
625 | s = ss; |
49704364 |
626 | savsym.flags = symptr->flags; |
627 | *symptr = savsym; |
18529408 |
628 | break; |
629 | } |
a6ec74c1 |
630 | case '@': |
49704364 |
631 | if (len > strend - strrelbeg) |
632 | Perl_croak(aTHX_ "'@' outside of string in unpack"); |
633 | s = strrelbeg + len; |
a6ec74c1 |
634 | break; |
62f95557 |
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 |
640 | case 'X': |
641 | if (len > s - strbeg) |
49704364 |
642 | Perl_croak(aTHX_ "'X' outside of string in unpack" ); |
a6ec74c1 |
643 | s -= len; |
644 | break; |
62f95557 |
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 |
654 | case 'x': |
655 | if (len > strend - s) |
49704364 |
656 | Perl_croak(aTHX_ "'x' outside of string in unpack"); |
a6ec74c1 |
657 | s += len; |
658 | break; |
659 | case '/': |
49704364 |
660 | Perl_croak(aTHX_ "'/' must follow a numeric type in unpack"); |
661 | break; |
a6ec74c1 |
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 |
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 |
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 |
690 | XPUSHs(sv_2mortal(sv)); |
691 | break; |
692 | case 'B': |
693 | case 'b': |
49704364 |
694 | if (howlen == e_star || len > (strend - s) * 8) |
a6ec74c1 |
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 |
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 |
719 | bits >>= 1; |
720 | } |
721 | } |
722 | else { |
723 | while (len-- > 0) { |
92d41999 |
724 | if (bits & 128) cuv++; |
a6ec74c1 |
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 |
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 |
797 | if (checksum > bits_in_uv) |
798 | cdouble += (NV)aint; |
799 | else |
92d41999 |
800 | cuv += aint; |
a6ec74c1 |
801 | } |
802 | } |
803 | else { |
49704364 |
804 | if (len && unpack_only_one) |
c8f824eb |
805 | len = 1; |
a6ec74c1 |
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 |
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 |
822 | break; |
823 | } |
a6ec74c1 |
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 |
831 | } |
832 | } |
833 | else { |
49704364 |
834 | if (len && unpack_only_one) |
c8f824eb |
835 | len = 1; |
a6ec74c1 |
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 |
849 | break; |
850 | } |
49704364 |
851 | if ((symptr->flags & FLAG_UNPACK_DO_UTF8) == 0) |
35bcd338 |
852 | goto unpack_C; |
a6ec74c1 |
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 |
859 | along = alen; |
860 | s += along; |
fa8ec7c1 |
861 | if (checksum > bits_in_uv) |
a6ec74c1 |
862 | cdouble += (NV)auint; |
863 | else |
92d41999 |
864 | cuv += auint; |
a6ec74c1 |
865 | } |
866 | } |
867 | else { |
49704364 |
868 | if (len && unpack_only_one) |
c8f824eb |
869 | len = 1; |
a6ec74c1 |
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 |
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 |
883 | case 's' | TYPE_IS_SHRIEKING: |
884 | #if SHORTSIZE != SIZE16 |
885 | along = (strend - s) / sizeof(short); |
a6ec74c1 |
886 | if (len > along) |
887 | len = along; |
888 | if (checksum) { |
49704364 |
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 |
899 | } |
900 | else { |
73b5735c |
901 | short ashort; |
49704364 |
902 | if (len && unpack_only_one) |
903 | len = 1; |
904 | EXTEND(SP, len); |
905 | EXTEND_MORTAL(len); |
49704364 |
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 |
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 |
926 | if (ashort > 32767) |
927 | ashort -= 65536; |
a6ec74c1 |
928 | #endif |
49704364 |
929 | s += SIZE16; |
930 | if (checksum > bits_in_uv) |
931 | cdouble += (NV)ashort; |
932 | else |
933 | cuv += ashort; |
a6ec74c1 |
934 | } |
935 | } |
936 | else { |
49704364 |
937 | if (len && unpack_only_one) |
c8f824eb |
938 | len = 1; |
a6ec74c1 |
939 | EXTEND(SP, len); |
940 | EXTEND_MORTAL(len); |
49704364 |
941 | |
942 | while (len-- > 0) { |
943 | COPY16(s, &ashort); |
a6ec74c1 |
944 | #if SHORTSIZE > SIZE16 |
49704364 |
945 | if (ashort > 32767) |
946 | ashort -= 65536; |
a6ec74c1 |
947 | #endif |
49704364 |
948 | s += SIZE16; |
949 | sv = NEWSV(38, 0); |
950 | sv_setiv(sv, (IV)ashort); |
951 | PUSHs(sv_2mortal(sv)); |
a6ec74c1 |
952 | } |
953 | } |
954 | break; |
49704364 |
955 | case 'S' | TYPE_IS_SHRIEKING: |
956 | #if SHORTSIZE != SIZE16 |
7accc089 |
957 | along = (strend - s) / sizeof(unsigned short); |
49704364 |
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 |
989 | case 'v': |
990 | case 'n': |
991 | case 'S': |
a6ec74c1 |
992 | along = (strend - s) / SIZE16; |
a6ec74c1 |
993 | if (len > along) |
994 | len = along; |
995 | if (checksum) { |
49704364 |
996 | while (len-- > 0) { |
997 | COPY16(s, &aushort); |
998 | s += SIZE16; |
a6ec74c1 |
999 | #ifdef HAS_NTOHS |
49704364 |
1000 | if (datumtype == 'n') |
1001 | aushort = PerlSock_ntohs(aushort); |
a6ec74c1 |
1002 | #endif |
1003 | #ifdef HAS_VTOHS |
49704364 |
1004 | if (datumtype == 'v') |
1005 | aushort = vtohs(aushort); |
a6ec74c1 |
1006 | #endif |
49704364 |
1007 | if (checksum > bits_in_uv) |
1008 | cdouble += (NV)aushort; |
1009 | else |
1010 | cuv += aushort; |
a6ec74c1 |
1011 | } |
1012 | } |
1013 | else { |
49704364 |
1014 | if (len && unpack_only_one) |
c8f824eb |
1015 | len = 1; |
a6ec74c1 |
1016 | EXTEND(SP, len); |
1017 | EXTEND_MORTAL(len); |
49704364 |
1018 | while (len-- > 0) { |
1019 | COPY16(s, &aushort); |
1020 | s += SIZE16; |
1021 | sv = NEWSV(39, 0); |
a6ec74c1 |
1022 | #ifdef HAS_NTOHS |
49704364 |
1023 | if (datumtype == 'n') |
1024 | aushort = PerlSock_ntohs(aushort); |
a6ec74c1 |
1025 | #endif |
1026 | #ifdef HAS_VTOHS |
49704364 |
1027 | if (datumtype == 'v') |
1028 | aushort = vtohs(aushort); |
a6ec74c1 |
1029 | #endif |
49704364 |
1030 | sv_setiv(sv, (UV)aushort); |
1031 | PUSHs(sv_2mortal(sv)); |
a6ec74c1 |
1032 | } |
1033 | } |
1034 | break; |
1035 | case 'i': |
49704364 |
1036 | case 'i' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
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 |
1045 | cdouble += (NV)aint; |
1046 | else |
92d41999 |
1047 | cuv += aint; |
a6ec74c1 |
1048 | } |
1049 | } |
1050 | else { |
49704364 |
1051 | if (len && unpack_only_one) |
c8f824eb |
1052 | len = 1; |
a6ec74c1 |
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 |
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 |
1099 | cdouble += (NV)auint; |
1100 | else |
92d41999 |
1101 | cuv += auint; |
a6ec74c1 |
1102 | } |
1103 | } |
1104 | else { |
49704364 |
1105 | if (len && unpack_only_one) |
c8f824eb |
1106 | len = 1; |
a6ec74c1 |
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 |
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 |
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 |
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 |
1181 | case 'l' | TYPE_IS_SHRIEKING: |
1182 | #if LONGSIZE != SIZE32 |
1183 | along = (strend - s) / sizeof(long); |
a6ec74c1 |
1184 | if (len > along) |
1185 | len = along; |
1186 | if (checksum) { |
49704364 |
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 |
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 |
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 |
1224 | if (along > 2147483647) |
1225 | along -= 4294967296; |
a6ec74c1 |
1226 | #endif |
49704364 |
1227 | s += SIZE32; |
1228 | if (checksum > bits_in_uv) |
1229 | cdouble += (NV)along; |
1230 | else |
1231 | cuv += along; |
a6ec74c1 |
1232 | } |
1233 | } |
1234 | else { |
49704364 |
1235 | if (len && unpack_only_one) |
c8f824eb |
1236 | len = 1; |
a6ec74c1 |
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 |
1245 | if (along > 2147483647) |
1246 | along -= 4294967296; |
a6ec74c1 |
1247 | #endif |
49704364 |
1248 | s += SIZE32; |
1249 | sv = NEWSV(42, 0); |
1250 | sv_setiv(sv, (IV)along); |
1251 | PUSHs(sv_2mortal(sv)); |
a6ec74c1 |
1252 | } |
1253 | } |
1254 | break; |
49704364 |
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 |
1289 | case 'V': |
1290 | case 'N': |
1291 | case 'L': |
a6ec74c1 |
1292 | along = (strend - s) / SIZE32; |
a6ec74c1 |
1293 | if (len > along) |
1294 | len = along; |
1295 | if (checksum) { |
49704364 |
1296 | while (len-- > 0) { |
1297 | COPY32(s, &aulong); |
1298 | s += SIZE32; |
a6ec74c1 |
1299 | #ifdef HAS_NTOHL |
49704364 |
1300 | if (datumtype == 'N') |
1301 | aulong = PerlSock_ntohl(aulong); |
a6ec74c1 |
1302 | #endif |
1303 | #ifdef HAS_VTOHL |
49704364 |
1304 | if (datumtype == 'V') |
1305 | aulong = vtohl(aulong); |
a6ec74c1 |
1306 | #endif |
49704364 |
1307 | if (checksum > bits_in_uv) |
1308 | cdouble += (NV)aulong; |
1309 | else |
1310 | cuv += aulong; |
a6ec74c1 |
1311 | } |
1312 | } |
1313 | else { |
49704364 |
1314 | if (len && unpack_only_one) |
c8f824eb |
1315 | len = 1; |
a6ec74c1 |
1316 | EXTEND(SP, len); |
1317 | EXTEND_MORTAL(len); |
49704364 |
1318 | while (len-- > 0) { |
1319 | COPY32(s, &aulong); |
1320 | s += SIZE32; |
a6ec74c1 |
1321 | #ifdef HAS_NTOHL |
49704364 |
1322 | if (datumtype == 'N') |
1323 | aulong = PerlSock_ntohl(aulong); |
a6ec74c1 |
1324 | #endif |
1325 | #ifdef HAS_VTOHL |
49704364 |
1326 | if (datumtype == 'V') |
1327 | aulong = vtohl(aulong); |
a6ec74c1 |
1328 | #endif |
49704364 |
1329 | sv = NEWSV(43, 0); |
1330 | sv_setuv(sv, (UV)aulong); |
1331 | PUSHs(sv_2mortal(sv)); |
a6ec74c1 |
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 |
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 |
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 |
1397 | } |
1398 | break; |
1399 | case 'P': |
49704364 |
1400 | if (symptr->howlen == e_star) |
1401 | Perl_croak(aTHX_ "'P' must have an explicit size in unpack"); |
a6ec74c1 |
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 |
1419 | if (checksum) { |
1420 | while (len-- > 0) { |
a6ec74c1 |
1421 | Copy(s, &aquad, 1, Quad_t); |
1422 | s += sizeof(Quad_t); |
fa8ec7c1 |
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 |
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 |
1438 | Copy(s, &aquad, 1, Quad_t); |
1439 | s += sizeof(Quad_t); |
fa8ec7c1 |
1440 | } |
1441 | sv = NEWSV(42, 0); |
1442 | if (aquad >= IV_MIN && aquad <= IV_MAX) |
92d41999 |
1443 | sv_setiv(sv, (IV)aquad); |
fa8ec7c1 |
1444 | else |
1445 | sv_setnv(sv, (NV)aquad); |
1446 | PUSHs(sv_2mortal(sv)); |
1447 | } |
1448 | } |
a6ec74c1 |
1449 | break; |
1450 | case 'Q': |
206947d2 |
1451 | along = (strend - s) / sizeof(Uquad_t); |
a6ec74c1 |
1452 | if (len > along) |
1453 | len = along; |
fa8ec7c1 |
1454 | if (checksum) { |
1455 | while (len-- > 0) { |
a6ec74c1 |
1456 | Copy(s, &auquad, 1, Uquad_t); |
1457 | s += sizeof(Uquad_t); |
fa8ec7c1 |
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 |
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 |
1484 | break; |
1485 | #endif |
1486 | /* float and double added gnb@melba.bby.oz.au 22/11/89 */ |
1487 | case 'f': |
a6ec74c1 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
1634 | hunk[0] = (char)((a << 2) | (b >> 4)); |
1635 | hunk[1] = (char)((b << 4) | (c >> 2)); |
1636 | hunk[2] = (char)((c << 6) | d); |
a6ec74c1 |
1637 | sv_catpvn(sv, hunk, (len > 3) ? 3 : len); |
1638 | len -= 3; |
1639 | } |
1640 | if (*s == '\n') |
1641 | s++; |
92aa5668 |
1642 | else /* possible checksum byte */ |
1643 | if (s + 1 < strend && s[1] == '\n') |
1644 | s += 2; |
a6ec74c1 |
1645 | } |
1646 | XPUSHs(sv_2mortal(sv)); |
1647 | break; |
1648 | } |
49704364 |
1649 | |
a6ec74c1 |
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 |
1655 | NV trouble; |
1656 | |
fa8ec7c1 |
1657 | adouble = (NV) (1 << (checksum & 15)); |
a6ec74c1 |
1658 | while (checksum >= 16) { |
1659 | checksum -= 16; |
1660 | adouble *= 65536.0; |
1661 | } |
a6ec74c1 |
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 |
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 |
1673 | } |
1674 | XPUSHs(sv_2mortal(sv)); |
1675 | checksum = 0; |
1676 | } |
49704364 |
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 |
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; |
bab9c0ac |
1710 | dPOPPOPssrl; |
18529408 |
1711 | I32 gimme = GIMME_V; |
1712 | STRLEN llen; |
1713 | STRLEN rlen; |
1714 | register char *pat = SvPV(left, llen); |
1715 | #ifdef PACKED_IS_OCTETS |
1716 | /* Packed side is assumed to be octets - so force downgrade if it |
1717 | has been UTF-8 encoded by accident |
1718 | */ |
1719 | register char *s = SvPVbyte(right, rlen); |
1720 | #else |
1721 | register char *s = SvPV(right, rlen); |
1722 | #endif |
1723 | char *strend = s + rlen; |
1724 | register char *patend = pat + llen; |
1725 | register I32 cnt; |
1726 | |
1727 | PUTBACK; |
7accc089 |
1728 | cnt = unpackstring(pat, patend, s, strend, |
49704364 |
1729 | ((gimme == G_SCALAR) ? FLAG_UNPACK_ONLY_ONE : 0) |
1730 | | (DO_UTF8(right) ? FLAG_UNPACK_DO_UTF8 : 0)); |
1731 | |
18529408 |
1732 | SPAGAIN; |
1733 | if ( !cnt && gimme == G_SCALAR ) |
1734 | PUSHs(&PL_sv_undef); |
a6ec74c1 |
1735 | RETURN; |
1736 | } |
1737 | |
1738 | STATIC void |
1739 | S_doencodes(pTHX_ register SV *sv, register char *s, register I32 len) |
1740 | { |
1741 | char hunk[5]; |
1742 | |
1743 | *hunk = PL_uuemap[len]; |
1744 | sv_catpvn(sv, hunk, 1); |
1745 | hunk[4] = '\0'; |
1746 | while (len > 2) { |
1747 | hunk[0] = PL_uuemap[(077 & (*s >> 2))]; |
1748 | hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((s[1] >> 4) & 017)))]; |
1749 | hunk[2] = PL_uuemap[(077 & (((s[1] << 2) & 074) | ((s[2] >> 6) & 03)))]; |
1750 | hunk[3] = PL_uuemap[(077 & (s[2] & 077))]; |
1751 | sv_catpvn(sv, hunk, 4); |
1752 | s += 3; |
1753 | len -= 3; |
1754 | } |
1755 | if (len > 0) { |
1756 | char r = (len > 1 ? s[1] : '\0'); |
1757 | hunk[0] = PL_uuemap[(077 & (*s >> 2))]; |
1758 | hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((r >> 4) & 017)))]; |
1759 | hunk[2] = PL_uuemap[(077 & ((r << 2) & 074))]; |
1760 | hunk[3] = PL_uuemap[0]; |
1761 | sv_catpvn(sv, hunk, 4); |
1762 | } |
1763 | sv_catpvn(sv, "\n", 1); |
1764 | } |
1765 | |
1766 | STATIC SV * |
1767 | S_is_an_int(pTHX_ char *s, STRLEN l) |
1768 | { |
1769 | STRLEN n_a; |
1770 | SV *result = newSVpvn(s, l); |
1771 | char *result_c = SvPV(result, n_a); /* convenience */ |
1772 | char *out = result_c; |
1773 | bool skip = 1; |
1774 | bool ignore = 0; |
1775 | |
1776 | while (*s) { |
1777 | switch (*s) { |
1778 | case ' ': |
1779 | break; |
1780 | case '+': |
1781 | if (!skip) { |
1782 | SvREFCNT_dec(result); |
1783 | return (NULL); |
1784 | } |
1785 | break; |
1786 | case '0': |
1787 | case '1': |
1788 | case '2': |
1789 | case '3': |
1790 | case '4': |
1791 | case '5': |
1792 | case '6': |
1793 | case '7': |
1794 | case '8': |
1795 | case '9': |
1796 | skip = 0; |
1797 | if (!ignore) { |
1798 | *(out++) = *s; |
1799 | } |
1800 | break; |
1801 | case '.': |
1802 | ignore = 1; |
1803 | break; |
1804 | default: |
1805 | SvREFCNT_dec(result); |
1806 | return (NULL); |
1807 | } |
1808 | s++; |
1809 | } |
1810 | *(out++) = '\0'; |
1811 | SvCUR_set(result, out - result_c); |
1812 | return (result); |
1813 | } |
1814 | |
1815 | /* pnum must be '\0' terminated */ |
1816 | STATIC int |
1817 | S_div128(pTHX_ SV *pnum, bool *done) |
1818 | { |
1819 | STRLEN len; |
1820 | char *s = SvPV(pnum, len); |
1821 | int m = 0; |
1822 | int r = 0; |
1823 | char *t = s; |
1824 | |
1825 | *done = 1; |
1826 | while (*t) { |
1827 | int i; |
1828 | |
1829 | i = m * 10 + (*t - '0'); |
1830 | m = i & 0x7F; |
1831 | r = (i >> 7); /* r < 10 */ |
1832 | if (r) { |
1833 | *done = 0; |
1834 | } |
1835 | *(t++) = '0' + r; |
1836 | } |
1837 | *(t++) = '\0'; |
1838 | SvCUR_set(pnum, (STRLEN) (t - s)); |
1839 | return (m); |
1840 | } |
1841 | |
49704364 |
1842 | |
a6ec74c1 |
1843 | |
18529408 |
1844 | /* |
1845 | =for apidoc pack_cat |
1846 | |
7accc089 |
1847 | The engine implementing pack() Perl function. Note: parameters next_in_list and |
1848 | flags are not used. This call should not be used; use packlist instead. |
18529408 |
1849 | |
1850 | =cut */ |
1851 | |
49704364 |
1852 | |
18529408 |
1853 | void |
1854 | Perl_pack_cat(pTHX_ SV *cat, char *pat, register char *patend, register SV **beglist, SV **endlist, SV ***next_in_list, U32 flags) |
a6ec74c1 |
1855 | { |
49704364 |
1856 | tempsym_t sym = { 0 }; |
1857 | sym.patptr = pat; |
1858 | sym.patend = patend; |
7accc089 |
1859 | sym.flags = FLAG_PACK; |
1860 | |
1861 | (void)pack_rec( cat, &sym, beglist, endlist ); |
1862 | } |
1863 | |
1864 | |
1865 | /* |
1866 | =for apidoc packlist |
1867 | |
1868 | The engine implementing pack() Perl function. |
1869 | |
1870 | =cut */ |
1871 | |
1872 | |
1873 | void |
1874 | Perl_packlist(pTHX_ SV *cat, char *pat, register char *patend, register SV **beglist, SV **endlist ) |
1875 | { |
1876 | tempsym_t sym = { 0 }; |
1877 | sym.patptr = pat; |
1878 | sym.patend = patend; |
1879 | sym.flags = FLAG_PACK; |
49704364 |
1880 | |
1881 | (void)pack_rec( cat, &sym, beglist, endlist ); |
1882 | } |
1883 | |
1884 | |
1885 | STATIC |
1886 | SV ** |
1887 | S_pack_rec(pTHX_ SV *cat, register tempsym_t* symptr, register SV **beglist, SV **endlist ) |
1888 | { |
a6ec74c1 |
1889 | register I32 items; |
1890 | STRLEN fromlen; |
49704364 |
1891 | register I32 len = 0; |
a6ec74c1 |
1892 | SV *fromstr; |
1893 | /*SUPPRESS 442*/ |
1894 | static char null10[] = {0,0,0,0,0,0,0,0,0,0}; |
1895 | static char *space10 = " "; |
49704364 |
1896 | bool found; |
a6ec74c1 |
1897 | |
1898 | /* These must not be in registers: */ |
1899 | char achar; |
1900 | I16 ashort; |
1901 | int aint; |
1902 | unsigned int auint; |
1903 | I32 along; |
1904 | U32 aulong; |
92d41999 |
1905 | IV aiv; |
1906 | UV auv; |
1907 | NV anv; |
1908 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) |
1909 | long double aldouble; |
1910 | #endif |
a6ec74c1 |
1911 | #ifdef HAS_QUAD |
1912 | Quad_t aquad; |
1913 | Uquad_t auquad; |
1914 | #endif |
1915 | char *aptr; |
1916 | float afloat; |
1917 | double adouble; |
49704364 |
1918 | int strrelbeg = SvCUR(cat); |
1919 | tempsym_t lookahead; |
a6ec74c1 |
1920 | |
18529408 |
1921 | items = endlist - beglist; |
49704364 |
1922 | found = next_symbol( symptr ); |
1923 | |
18529408 |
1924 | #ifndef PACKED_IS_OCTETS |
49704364 |
1925 | if (symptr->level == 0 && found && symptr->code == 'U' ){ |
18529408 |
1926 | SvUTF8_on(cat); |
49704364 |
1927 | } |
18529408 |
1928 | #endif |
49704364 |
1929 | |
1930 | while (found) { |
a6ec74c1 |
1931 | SV *lengthcode = Nullsv; |
18529408 |
1932 | #define NEXTFROM ( lengthcode ? lengthcode : items-- > 0 ? *beglist++ : &PL_sv_no) |
49704364 |
1933 | |
1934 | I32 datumtype = symptr->code; |
1935 | howlen_t howlen; |
1936 | |
1937 | switch( howlen = symptr->howlen ){ |
1938 | case e_no_len: |
1939 | case e_number: |
1940 | len = symptr->length; |
1941 | break; |
1942 | case e_star: |
1943 | len = strchr("@Xxu", datumtype) ? 0 : items; |
1944 | break; |
1945 | } |
1946 | |
1947 | /* Look ahead for next symbol. Do we have code/code? */ |
1948 | lookahead = *symptr; |
1949 | found = next_symbol(&lookahead); |
1950 | if ( symptr->flags & FLAG_SLASH ) { |
1951 | if (found){ |
1952 | if ( 0 == strchr( "aAZ", lookahead.code ) || |
1953 | e_star != lookahead.howlen ) |
1954 | Perl_croak(aTHX_ "'/' must be followed by 'a*', 'A*' or 'Z*' in pack"); |
1955 | lengthcode = sv_2mortal(newSViv(sv_len(items > 0 |
18529408 |
1956 | ? *beglist : &PL_sv_no) |
49704364 |
1957 | + (lookahead.code == 'Z' ? 1 : 0))); |
1958 | } else { |
1959 | Perl_croak(aTHX_ "Code missing after '/' in pack"); |
1960 | } |
a6ec74c1 |
1961 | } |
49704364 |
1962 | |
a6ec74c1 |
1963 | switch(datumtype) { |
1964 | default: |
49704364 |
1965 | Perl_croak(aTHX_ "Invalid type '%c' in pack", (int)datumtype); |
a6ec74c1 |
1966 | case '%': |
49704364 |
1967 | Perl_croak(aTHX_ "'%%' may not be used in pack"); |
a6ec74c1 |
1968 | case '@': |
49704364 |
1969 | len += strrelbeg - SvCUR(cat); |
a6ec74c1 |
1970 | if (len > 0) |
1971 | goto grow; |
1972 | len = -len; |
1973 | if (len > 0) |
1974 | goto shrink; |
1975 | break; |
18529408 |
1976 | case '(': |
1977 | { |
49704364 |
1978 | tempsym_t savsym = *symptr; |
1979 | symptr->patend = savsym.grpend; |
1980 | symptr->level++; |
18529408 |
1981 | while (len--) { |
49704364 |
1982 | symptr->patptr = savsym.grpbeg; |
1983 | beglist = pack_rec(cat, symptr, beglist, endlist ); |
1984 | if (savsym.howlen == e_star && beglist == endlist) |
18529408 |
1985 | break; /* No way to continue */ |
1986 | } |
49704364 |
1987 | lookahead.flags = symptr->flags; |
1988 | *symptr = savsym; |
18529408 |
1989 | break; |
1990 | } |
62f95557 |
1991 | case 'X' | TYPE_IS_SHRIEKING: |
1992 | if (!len) /* Avoid division by 0 */ |
1993 | len = 1; |
1994 | len = (SvCUR(cat)) % len; |
1995 | /* FALL THROUGH */ |
a6ec74c1 |
1996 | case 'X': |
1997 | shrink: |
eb160463 |
1998 | if ((I32)SvCUR(cat) < len) |
49704364 |
1999 | Perl_croak(aTHX_ "'X' outside of string in pack"); |
a6ec74c1 |
2000 | SvCUR(cat) -= len; |
2001 | *SvEND(cat) = '\0'; |
2002 | break; |
62f95557 |
2003 | case 'x' | TYPE_IS_SHRIEKING: |
2004 | if (!len) /* Avoid division by 0 */ |
2005 | len = 1; |
2006 | aint = (SvCUR(cat)) % len; |
2007 | if (aint) /* Other portable ways? */ |
2008 | len = len - aint; |
2009 | else |
2010 | len = 0; |
2011 | /* FALL THROUGH */ |
49704364 |
2012 | |
a6ec74c1 |
2013 | case 'x': |
2014 | grow: |
2015 | while (len >= 10) { |
2016 | sv_catpvn(cat, null10, 10); |
2017 | len -= 10; |
2018 | } |
2019 | sv_catpvn(cat, null10, len); |
2020 | break; |
2021 | case 'A': |
2022 | case 'Z': |
2023 | case 'a': |
2024 | fromstr = NEXTFROM; |
2025 | aptr = SvPV(fromstr, fromlen); |
49704364 |
2026 | if (howlen == e_star) { |
a6ec74c1 |
2027 | len = fromlen; |
2028 | if (datumtype == 'Z') |
2029 | ++len; |
2030 | } |
eb160463 |
2031 | if ((I32)fromlen >= len) { |
a6ec74c1 |
2032 | sv_catpvn(cat, aptr, len); |
2033 | if (datumtype == 'Z') |
2034 | *(SvEND(cat)-1) = '\0'; |
2035 | } |
2036 | else { |
2037 | sv_catpvn(cat, aptr, fromlen); |
2038 | len -= fromlen; |
2039 | if (datumtype == 'A') { |
2040 | while (len >= 10) { |
2041 | sv_catpvn(cat, space10, 10); |
2042 | len -= 10; |
2043 | } |
2044 | sv_catpvn(cat, space10, len); |
2045 | } |
2046 | else { |
2047 | while (len >= 10) { |
2048 | sv_catpvn(cat, null10, 10); |
2049 | len -= 10; |
2050 | } |
2051 | sv_catpvn(cat, null10, len); |
2052 | } |
2053 | } |
2054 | break; |
2055 | case 'B': |
2056 | case 'b': |
2057 | { |
2058 | register char *str; |
2059 | I32 saveitems; |
2060 | |
2061 | fromstr = NEXTFROM; |
2062 | saveitems = items; |
2063 | str = SvPV(fromstr, fromlen); |
49704364 |
2064 | if (howlen == e_star) |
a6ec74c1 |
2065 | len = fromlen; |
2066 | aint = SvCUR(cat); |
2067 | SvCUR(cat) += (len+7)/8; |
2068 | SvGROW(cat, SvCUR(cat) + 1); |
2069 | aptr = SvPVX(cat) + aint; |
eb160463 |
2070 | if (len > (I32)fromlen) |
a6ec74c1 |
2071 | len = fromlen; |
2072 | aint = len; |
2073 | items = 0; |
2074 | if (datumtype == 'B') { |
2075 | for (len = 0; len++ < aint;) { |
2076 | items |= *str++ & 1; |
2077 | if (len & 7) |
2078 | items <<= 1; |
2079 | else { |
2080 | *aptr++ = items & 0xff; |
2081 | items = 0; |
2082 | } |
2083 | } |
2084 | } |
2085 | else { |
2086 | for (len = 0; len++ < aint;) { |
2087 | if (*str++ & 1) |
2088 | items |= 128; |
2089 | if (len & 7) |
2090 | items >>= 1; |
2091 | else { |
2092 | *aptr++ = items & 0xff; |
2093 | items = 0; |
2094 | } |
2095 | } |
2096 | } |
2097 | if (aint & 7) { |
2098 | if (datumtype == 'B') |
2099 | items <<= 7 - (aint & 7); |
2100 | else |
2101 | items >>= 7 - (aint & 7); |
2102 | *aptr++ = items & 0xff; |
2103 | } |
2104 | str = SvPVX(cat) + SvCUR(cat); |
2105 | while (aptr <= str) |
2106 | *aptr++ = '\0'; |
2107 | |
2108 | items = saveitems; |
2109 | } |
2110 | break; |
2111 | case 'H': |
2112 | case 'h': |
2113 | { |
2114 | register char *str; |
2115 | I32 saveitems; |
2116 | |
2117 | fromstr = NEXTFROM; |
2118 | saveitems = items; |
2119 | str = SvPV(fromstr, fromlen); |
49704364 |
2120 | if (howlen == e_star) |
a6ec74c1 |
2121 | len = fromlen; |
2122 | aint = SvCUR(cat); |
2123 | SvCUR(cat) += (len+1)/2; |
2124 | SvGROW(cat, SvCUR(cat) + 1); |
2125 | aptr = SvPVX(cat) + aint; |
eb160463 |
2126 | if (len > (I32)fromlen) |
a6ec74c1 |
2127 | len = fromlen; |
2128 | aint = len; |
2129 | items = 0; |
2130 | if (datumtype == 'H') { |
2131 | for (len = 0; len++ < aint;) { |
2132 | if (isALPHA(*str)) |
2133 | items |= ((*str++ & 15) + 9) & 15; |
2134 | else |
2135 | items |= *str++ & 15; |
2136 | if (len & 1) |
2137 | items <<= 4; |
2138 | else { |
2139 | *aptr++ = items & 0xff; |
2140 | items = 0; |
2141 | } |
2142 | } |
2143 | } |
2144 | else { |
2145 | for (len = 0; len++ < aint;) { |
2146 | if (isALPHA(*str)) |
2147 | items |= (((*str++ & 15) + 9) & 15) << 4; |
2148 | else |
2149 | items |= (*str++ & 15) << 4; |
2150 | if (len & 1) |
2151 | items >>= 4; |
2152 | else { |
2153 | *aptr++ = items & 0xff; |
2154 | items = 0; |
2155 | } |
2156 | } |
2157 | } |
2158 | if (aint & 1) |
2159 | *aptr++ = items & 0xff; |
2160 | str = SvPVX(cat) + SvCUR(cat); |
2161 | while (aptr <= str) |
2162 | *aptr++ = '\0'; |
2163 | |
2164 | items = saveitems; |
2165 | } |
2166 | break; |
2167 | case 'C': |
2168 | case 'c': |
2169 | while (len-- > 0) { |
2170 | fromstr = NEXTFROM; |
2171 | switch (datumtype) { |
2172 | case 'C': |
2173 | aint = SvIV(fromstr); |
2174 | if ((aint < 0 || aint > 255) && |
2175 | ckWARN(WARN_PACK)) |
9014280d |
2176 | Perl_warner(aTHX_ packWARN(WARN_PACK), |
49704364 |
2177 | "Character in 'C' format wrapped in pack"); |
a6ec74c1 |
2178 | achar = aint & 255; |
2179 | sv_catpvn(cat, &achar, sizeof(char)); |
2180 | break; |
2181 | case 'c': |
2182 | aint = SvIV(fromstr); |
2183 | if ((aint < -128 || aint > 127) && |
2184 | ckWARN(WARN_PACK)) |
9014280d |
2185 | Perl_warner(aTHX_ packWARN(WARN_PACK), |
49704364 |
2186 | "Character in 'c' format wrapped in pack" ); |
a6ec74c1 |
2187 | achar = aint & 255; |
2188 | sv_catpvn(cat, &achar, sizeof(char)); |
2189 | break; |
2190 | } |
2191 | } |
2192 | break; |
2193 | case 'U': |
2194 | while (len-- > 0) { |
2195 | fromstr = NEXTFROM; |
e87322b2 |
2196 | auint = UNI_TO_NATIVE(SvUV(fromstr)); |
a6ec74c1 |
2197 | SvGROW(cat, SvCUR(cat) + UTF8_MAXLEN + 1); |
52ea3e69 |
2198 | SvCUR_set(cat, |
2199 | (char*)uvchr_to_utf8_flags((U8*)SvEND(cat), |
2200 | auint, |
2201 | ckWARN(WARN_UTF8) ? |
2202 | 0 : UNICODE_ALLOW_ANY) |
2203 | - SvPVX(cat)); |
a6ec74c1 |
2204 | } |
2205 | *SvEND(cat) = '\0'; |
2206 | break; |
2207 | /* Float and double added by gnb@melba.bby.oz.au 22/11/89 */ |
2208 | case 'f': |
a6ec74c1 |
2209 | while (len-- > 0) { |
2210 | fromstr = NEXTFROM; |
5cdb9e01 |
2211 | #ifdef __VOS__ |
2212 | /* VOS does not automatically map a floating-point overflow |
2213 | during conversion from double to float into infinity, so we |
2214 | do it by hand. This code should either be generalized for |
2215 | any OS that needs it, or removed if and when VOS implements |
2216 | posix-976 (suggestion to support mapping to infinity). |
2217 | Paul.Green@stratus.com 02-04-02. */ |
2218 | if (SvNV(fromstr) > FLT_MAX) |
2219 | afloat = _float_constants[0]; /* single prec. inf. */ |
2220 | else if (SvNV(fromstr) < -FLT_MAX) |
2221 | afloat = _float_constants[0]; /* single prec. inf. */ |
2222 | else afloat = (float)SvNV(fromstr); |
2223 | #else |
baf3cf9c |
2224 | # if defined(VMS) && !defined(__IEEE_FP) |
2225 | /* IEEE fp overflow shenanigans are unavailable on VAX and optional |
2226 | * on Alpha; fake it if we don't have them. |
2227 | */ |
2228 | if (SvNV(fromstr) > FLT_MAX) |
2229 | afloat = FLT_MAX; |
2230 | else if (SvNV(fromstr) < -FLT_MAX) |
2231 | afloat = -FLT_MAX; |
2232 | else afloat = (float)SvNV(fromstr); |
2233 | # else |
a6ec74c1 |
2234 | afloat = (float)SvNV(fromstr); |
baf3cf9c |
2235 | # endif |
5cdb9e01 |
2236 | #endif |
a6ec74c1 |
2237 | sv_catpvn(cat, (char *)&afloat, sizeof (float)); |
2238 | } |
2239 | break; |
2240 | case 'd': |
a6ec74c1 |
2241 | while (len-- > 0) { |
2242 | fromstr = NEXTFROM; |
5cdb9e01 |
2243 | #ifdef __VOS__ |
2244 | /* VOS does not automatically map a floating-point overflow |
2245 | during conversion from long double to double into infinity, |
2246 | so we do it by hand. This code should either be generalized |
2247 | for any OS that needs it, or removed if and when VOS |
2248 | implements posix-976 (suggestion to support mapping to |
2249 | infinity). Paul.Green@stratus.com 02-04-02. */ |
2250 | if (SvNV(fromstr) > DBL_MAX) |
2251 | adouble = _double_constants[0]; /* double prec. inf. */ |
2252 | else if (SvNV(fromstr) < -DBL_MAX) |
2253 | adouble = _double_constants[0]; /* double prec. inf. */ |
2254 | else adouble = (double)SvNV(fromstr); |
2255 | #else |
baf3cf9c |
2256 | # if defined(VMS) && !defined(__IEEE_FP) |
2257 | /* IEEE fp overflow shenanigans are unavailable on VAX and optional |
2258 | * on Alpha; fake it if we don't have them. |
2259 | */ |
2260 | if (SvNV(fromstr) > DBL_MAX) |
2261 | adouble = DBL_MAX; |
2262 | else if (SvNV(fromstr) < -DBL_MAX) |
2263 | adouble = -DBL_MAX; |
2264 | else adouble = (double)SvNV(fromstr); |
2265 | # else |
a6ec74c1 |
2266 | adouble = (double)SvNV(fromstr); |
baf3cf9c |
2267 | # endif |
5cdb9e01 |
2268 | #endif |
a6ec74c1 |
2269 | sv_catpvn(cat, (char *)&adouble, sizeof (double)); |
2270 | } |
2271 | break; |
92d41999 |
2272 | case 'F': |
2273 | while (len-- > 0) { |
2274 | fromstr = NEXTFROM; |
2275 | anv = SvNV(fromstr); |
2276 | sv_catpvn(cat, (char *)&anv, NVSIZE); |
2277 | } |
2278 | break; |
2279 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) |
2280 | case 'D': |
2281 | while (len-- > 0) { |
2282 | fromstr = NEXTFROM; |
2283 | aldouble = (long double)SvNV(fromstr); |
2284 | sv_catpvn(cat, (char *)&aldouble, LONG_DOUBLESIZE); |
2285 | } |
2286 | break; |
2287 | #endif |
a6ec74c1 |
2288 | case 'n': |
2289 | while (len-- > 0) { |
2290 | fromstr = NEXTFROM; |
2291 | ashort = (I16)SvIV(fromstr); |
2292 | #ifdef HAS_HTONS |
2293 | ashort = PerlSock_htons(ashort); |
2294 | #endif |
2295 | CAT16(cat, &ashort); |
2296 | } |
2297 | break; |
2298 | case 'v': |
2299 | while (len-- > 0) { |
2300 | fromstr = NEXTFROM; |
2301 | ashort = (I16)SvIV(fromstr); |
2302 | #ifdef HAS_HTOVS |
2303 | ashort = htovs(ashort); |
2304 | #endif |
2305 | CAT16(cat, &ashort); |
2306 | } |
2307 | break; |
49704364 |
2308 | case 'S' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2309 | #if SHORTSIZE != SIZE16 |
49704364 |
2310 | { |
a6ec74c1 |
2311 | unsigned short aushort; |
2312 | |
2313 | while (len-- > 0) { |
2314 | fromstr = NEXTFROM; |
2315 | aushort = SvUV(fromstr); |
2316 | sv_catpvn(cat, (char *)&aushort, sizeof(unsigned short)); |
2317 | } |
49704364 |
2318 | } |
2319 | break; |
2320 | #else |
2321 | /* Fall through! */ |
a6ec74c1 |
2322 | #endif |
49704364 |
2323 | case 'S': |
a6ec74c1 |
2324 | { |
2325 | U16 aushort; |
2326 | |
2327 | while (len-- > 0) { |
2328 | fromstr = NEXTFROM; |
2329 | aushort = (U16)SvUV(fromstr); |
2330 | CAT16(cat, &aushort); |
2331 | } |
2332 | |
2333 | } |
2334 | break; |
49704364 |
2335 | case 's' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2336 | #if SHORTSIZE != SIZE16 |
49704364 |
2337 | { |
a6ec74c1 |
2338 | short ashort; |
2339 | |
2340 | while (len-- > 0) { |
2341 | fromstr = NEXTFROM; |
2342 | ashort = SvIV(fromstr); |
2343 | sv_catpvn(cat, (char *)&ashort, sizeof(short)); |
2344 | } |
2345 | } |
49704364 |
2346 | break; |
2347 | #else |
2348 | /* Fall through! */ |
a6ec74c1 |
2349 | #endif |
49704364 |
2350 | case 's': |
2351 | while (len-- > 0) { |
2352 | fromstr = NEXTFROM; |
2353 | ashort = (I16)SvIV(fromstr); |
2354 | CAT16(cat, &ashort); |
a6ec74c1 |
2355 | } |
2356 | break; |
2357 | case 'I': |
49704364 |
2358 | case 'I' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2359 | while (len-- > 0) { |
2360 | fromstr = NEXTFROM; |
2361 | auint = SvUV(fromstr); |
2362 | sv_catpvn(cat, (char*)&auint, sizeof(unsigned int)); |
2363 | } |
2364 | break; |
92d41999 |
2365 | case 'j': |
2366 | while (len-- > 0) { |
2367 | fromstr = NEXTFROM; |
2368 | aiv = SvIV(fromstr); |
2369 | sv_catpvn(cat, (char*)&aiv, IVSIZE); |
2370 | } |
2371 | break; |
2372 | case 'J': |
2373 | while (len-- > 0) { |
2374 | fromstr = NEXTFROM; |
2375 | auv = SvUV(fromstr); |
2376 | sv_catpvn(cat, (char*)&auv, UVSIZE); |
2377 | } |
2378 | break; |
a6ec74c1 |
2379 | case 'w': |
2380 | while (len-- > 0) { |
2381 | fromstr = NEXTFROM; |
15e9f109 |
2382 | anv = SvNV(fromstr); |
a6ec74c1 |
2383 | |
15e9f109 |
2384 | if (anv < 0) |
49704364 |
2385 | Perl_croak(aTHX_ "Cannot compress negative numbers in pack"); |
a6ec74c1 |
2386 | |
196b62db |
2387 | /* 0xFFFFFFFFFFFFFFFF may cast to 18446744073709551616.0, |
2388 | which is == UV_MAX_P1. IOK is fine (instead of UV_only), as |
2389 | any negative IVs will have already been got by the croak() |
2390 | above. IOK is untrue for fractions, so we test them |
2391 | against UV_MAX_P1. */ |
15e9f109 |
2392 | if (SvIOK(fromstr) || anv < UV_MAX_P1) |
a6ec74c1 |
2393 | { |
7c1b502b |
2394 | char buf[(sizeof(UV)*8)/7+1]; |
a6ec74c1 |
2395 | char *in = buf + sizeof(buf); |
196b62db |
2396 | UV auv = SvUV(fromstr); |
a6ec74c1 |
2397 | |
2398 | do { |
eb160463 |
2399 | *--in = (char)((auv & 0x7f) | 0x80); |
a6ec74c1 |
2400 | auv >>= 7; |
2401 | } while (auv); |
2402 | buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */ |
2403 | sv_catpvn(cat, in, (buf + sizeof(buf)) - in); |
2404 | } |
2405 | else if (SvPOKp(fromstr)) { /* decimal string arithmetics */ |
2406 | char *from, *result, *in; |
2407 | SV *norm; |
2408 | STRLEN len; |
2409 | bool done; |
2410 | |
2411 | /* Copy string and check for compliance */ |
2412 | from = SvPV(fromstr, len); |
2413 | if ((norm = is_an_int(from, len)) == NULL) |
49704364 |
2414 | Perl_croak(aTHX_ "Can only compress unsigned integers in pack"); |
a6ec74c1 |
2415 | |
2416 | New('w', result, len, char); |
2417 | in = result + len; |
2418 | done = FALSE; |
2419 | while (!done) |
2420 | *--in = div128(norm, &done) | 0x80; |
2421 | result[len - 1] &= 0x7F; /* clear continue bit */ |
2422 | sv_catpvn(cat, in, (result + len) - in); |
2423 | Safefree(result); |
2424 | SvREFCNT_dec(norm); /* free norm */ |
2425 | } |
2426 | else if (SvNOKp(fromstr)) { |
0258719b |
2427 | /* 10**NV_MAX_10_EXP is the largest power of 10 |
2428 | so 10**(NV_MAX_10_EXP+1) is definately unrepresentable |
2429 | given 10**(NV_MAX_10_EXP+1) == 128 ** x solve for x: |
2430 | x = (NV_MAX_10_EXP+1) * log (10) / log (128) |
2431 | And with that many bytes only Inf can overflow. |
8f8d40ab |
2432 | Some C compilers are strict about integral constant |
2433 | expressions so we conservatively divide by a slightly |
2434 | smaller integer instead of multiplying by the exact |
2435 | floating-point value. |
0258719b |
2436 | */ |
2437 | #ifdef NV_MAX_10_EXP |
8f8d40ab |
2438 | /* char buf[1 + (int)((NV_MAX_10_EXP + 1) * 0.47456)]; -- invalid C */ |
2439 | char buf[1 + (int)((NV_MAX_10_EXP + 1) / 2)]; /* valid C */ |
0258719b |
2440 | #else |
8f8d40ab |
2441 | /* char buf[1 + (int)((308 + 1) * 0.47456)]; -- invalid C */ |
2442 | char buf[1 + (int)((308 + 1) / 2)]; /* valid C */ |
0258719b |
2443 | #endif |
a6ec74c1 |
2444 | char *in = buf + sizeof(buf); |
2445 | |
15e9f109 |
2446 | anv = Perl_floor(anv); |
a6ec74c1 |
2447 | do { |
15e9f109 |
2448 | NV next = Perl_floor(anv / 128); |
a6ec74c1 |
2449 | if (in <= buf) /* this cannot happen ;-) */ |
49704364 |
2450 | Perl_croak(aTHX_ "Cannot compress integer in pack"); |
0258719b |
2451 | *--in = (unsigned char)(anv - (next * 128)) | 0x80; |
15e9f109 |
2452 | anv = next; |
2453 | } while (anv > 0); |
a6ec74c1 |
2454 | buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */ |
2455 | sv_catpvn(cat, in, (buf + sizeof(buf)) - in); |
2456 | } |
735b914b |
2457 | else { |
2458 | char *from, *result, *in; |
2459 | SV *norm; |
2460 | STRLEN len; |
2461 | bool done; |
2462 | |
2463 | /* Copy string and check for compliance */ |
2464 | from = SvPV(fromstr, len); |
2465 | if ((norm = is_an_int(from, len)) == NULL) |
49704364 |
2466 | Perl_croak(aTHX_ "Can only compress unsigned integers in pack"); |
735b914b |
2467 | |
2468 | New('w', result, len, char); |
2469 | in = result + len; |
2470 | done = FALSE; |
2471 | while (!done) |
2472 | *--in = div128(norm, &done) | 0x80; |
2473 | result[len - 1] &= 0x7F; /* clear continue bit */ |
2474 | sv_catpvn(cat, in, (result + len) - in); |
2475 | Safefree(result); |
2476 | SvREFCNT_dec(norm); /* free norm */ |
2477 | } |
a6ec74c1 |
2478 | } |
2479 | break; |
2480 | case 'i': |
49704364 |
2481 | case 'i' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2482 | while (len-- > 0) { |
2483 | fromstr = NEXTFROM; |
2484 | aint = SvIV(fromstr); |
2485 | sv_catpvn(cat, (char*)&aint, sizeof(int)); |
2486 | } |
2487 | break; |
2488 | case 'N': |
2489 | while (len-- > 0) { |
2490 | fromstr = NEXTFROM; |
2491 | aulong = SvUV(fromstr); |
2492 | #ifdef HAS_HTONL |
2493 | aulong = PerlSock_htonl(aulong); |
2494 | #endif |
2495 | CAT32(cat, &aulong); |
2496 | } |
2497 | break; |
2498 | case 'V': |
2499 | while (len-- > 0) { |
2500 | fromstr = NEXTFROM; |
2501 | aulong = SvUV(fromstr); |
2502 | #ifdef HAS_HTOVL |
2503 | aulong = htovl(aulong); |
2504 | #endif |
2505 | CAT32(cat, &aulong); |
2506 | } |
2507 | break; |
49704364 |
2508 | case 'L' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2509 | #if LONGSIZE != SIZE32 |
49704364 |
2510 | { |
a6ec74c1 |
2511 | unsigned long aulong; |
2512 | |
2513 | while (len-- > 0) { |
2514 | fromstr = NEXTFROM; |
2515 | aulong = SvUV(fromstr); |
2516 | sv_catpvn(cat, (char *)&aulong, sizeof(unsigned long)); |
2517 | } |
2518 | } |
49704364 |
2519 | break; |
2520 | #else |
2521 | /* Fall though! */ |
a6ec74c1 |
2522 | #endif |
49704364 |
2523 | case 'L': |
a6ec74c1 |
2524 | { |
2525 | while (len-- > 0) { |
2526 | fromstr = NEXTFROM; |
2527 | aulong = SvUV(fromstr); |
2528 | CAT32(cat, &aulong); |
2529 | } |
2530 | } |
2531 | break; |
49704364 |
2532 | case 'l' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2533 | #if LONGSIZE != SIZE32 |
49704364 |
2534 | { |
a6ec74c1 |
2535 | long along; |
2536 | |
2537 | while (len-- > 0) { |
2538 | fromstr = NEXTFROM; |
2539 | along = SvIV(fromstr); |
2540 | sv_catpvn(cat, (char *)&along, sizeof(long)); |
2541 | } |
2542 | } |
49704364 |
2543 | break; |
2544 | #else |
2545 | /* Fall though! */ |
a6ec74c1 |
2546 | #endif |
49704364 |
2547 | case 'l': |
2548 | while (len-- > 0) { |
2549 | fromstr = NEXTFROM; |
2550 | along = SvIV(fromstr); |
2551 | CAT32(cat, &along); |
a6ec74c1 |
2552 | } |
2553 | break; |
2554 | #ifdef HAS_QUAD |
2555 | case 'Q': |
2556 | while (len-- > 0) { |
2557 | fromstr = NEXTFROM; |
2558 | auquad = (Uquad_t)SvUV(fromstr); |
2559 | sv_catpvn(cat, (char*)&auquad, sizeof(Uquad_t)); |
2560 | } |
2561 | break; |
2562 | case 'q': |
2563 | while (len-- > 0) { |
2564 | fromstr = NEXTFROM; |
2565 | aquad = (Quad_t)SvIV(fromstr); |
2566 | sv_catpvn(cat, (char*)&aquad, sizeof(Quad_t)); |
2567 | } |
2568 | break; |
2569 | #endif |
2570 | case 'P': |
2571 | len = 1; /* assume SV is correct length */ |
49704364 |
2572 | /* Fall through! */ |
a6ec74c1 |
2573 | case 'p': |
2574 | while (len-- > 0) { |
2575 | fromstr = NEXTFROM; |
2576 | if (fromstr == &PL_sv_undef) |
2577 | aptr = NULL; |
2578 | else { |
2579 | STRLEN n_a; |
2580 | /* XXX better yet, could spirit away the string to |
2581 | * a safe spot and hang on to it until the result |
2582 | * of pack() (and all copies of the result) are |
2583 | * gone. |
2584 | */ |
2585 | if (ckWARN(WARN_PACK) && (SvTEMP(fromstr) |
2586 | || (SvPADTMP(fromstr) |
2587 | && !SvREADONLY(fromstr)))) |
2588 | { |
9014280d |
2589 | Perl_warner(aTHX_ packWARN(WARN_PACK), |
a6ec74c1 |
2590 | "Attempt to pack pointer to temporary value"); |
2591 | } |
2592 | if (SvPOK(fromstr) || SvNIOK(fromstr)) |
2593 | aptr = SvPV(fromstr,n_a); |
2594 | else |
2595 | aptr = SvPV_force(fromstr,n_a); |
2596 | } |
2597 | sv_catpvn(cat, (char*)&aptr, sizeof(char*)); |
2598 | } |
2599 | break; |
2600 | case 'u': |
2601 | fromstr = NEXTFROM; |
2602 | aptr = SvPV(fromstr, fromlen); |
2603 | SvGROW(cat, fromlen * 4 / 3); |
19c9db5e |
2604 | if (len <= 2) |
a6ec74c1 |
2605 | len = 45; |
2606 | else |
2607 | len = len / 3 * 3; |
2608 | while (fromlen > 0) { |
2609 | I32 todo; |
2610 | |
eb160463 |
2611 | if ((I32)fromlen > len) |
a6ec74c1 |
2612 | todo = len; |
2613 | else |
2614 | todo = fromlen; |
2615 | doencodes(cat, aptr, todo); |
2616 | fromlen -= todo; |
2617 | aptr += todo; |
2618 | } |
2619 | break; |
2620 | } |
49704364 |
2621 | *symptr = lookahead; |
a6ec74c1 |
2622 | } |
49704364 |
2623 | return beglist; |
18529408 |
2624 | } |
2625 | #undef NEXTFROM |
2626 | |
2627 | |
2628 | PP(pp_pack) |
2629 | { |
2630 | dSP; dMARK; dORIGMARK; dTARGET; |
2631 | register SV *cat = TARG; |
2632 | STRLEN fromlen; |
2633 | register char *pat = SvPVx(*++MARK, fromlen); |
2634 | register char *patend = pat + fromlen; |
2635 | |
2636 | MARK++; |
2637 | sv_setpvn(cat, "", 0); |
2638 | |
7accc089 |
2639 | packlist(cat, pat, patend, MARK, SP + 1); |
18529408 |
2640 | |
a6ec74c1 |
2641 | SvSETMAGIC(cat); |
2642 | SP = ORIGMARK; |
2643 | PUSHs(cat); |
2644 | RETURN; |
2645 | } |
a6ec74c1 |
2646 | |