Commit | Line | Data |
a6ec74c1 |
1 | /* pp_pack.c |
2 | * |
4c79ee7a |
3 | * Copyright (c) 1991-2003, Larry Wall |
a6ec74c1 |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. |
7 | * |
8 | */ |
9 | |
d31a8517 |
10 | /* |
11 | * He still hopefully carried some of his gear in his pack: a small tinder-box, |
12 | * two small shallow pans, the smaller fitting into the larger; inside them a |
13 | * wooden spoon, a short two-pronged fork and some skewers were stowed; and |
14 | * hidden at the bottom of the pack in a flat wooden box a dwindling treasure, |
15 | * some salt. |
16 | */ |
17 | |
a6ec74c1 |
18 | #include "EXTERN.h" |
19 | #define PERL_IN_PP_PACK_C |
20 | #include "perl.h" |
21 | |
22 | /* |
23 | * The compiler on Concurrent CX/UX systems has a subtle bug which only |
24 | * seems to show up when compiling pp.c - it generates the wrong double |
25 | * precision constant value for (double)UV_MAX when used inline in the body |
26 | * of the code below, so this makes a static variable up front (which the |
27 | * compiler seems to get correct) and uses it in place of UV_MAX below. |
28 | */ |
29 | #ifdef CXUX_BROKEN_CONSTANT_CONVERT |
30 | static double UV_MAX_cxux = ((double)UV_MAX); |
31 | #endif |
32 | |
33 | /* |
34 | * Offset for integer pack/unpack. |
35 | * |
36 | * On architectures where I16 and I32 aren't really 16 and 32 bits, |
37 | * which for now are all Crays, pack and unpack have to play games. |
38 | */ |
39 | |
40 | /* |
41 | * These values are required for portability of pack() output. |
42 | * If they're not right on your machine, then pack() and unpack() |
43 | * wouldn't work right anyway; you'll need to apply the Cray hack. |
44 | * (I'd like to check them with #if, but you can't use sizeof() in |
45 | * the preprocessor.) --??? |
46 | */ |
47 | /* |
48 | The appropriate SHORTSIZE, INTSIZE, LONGSIZE, and LONGLONGSIZE |
49 | defines are now in config.h. --Andy Dougherty April 1998 |
50 | */ |
51 | #define SIZE16 2 |
52 | #define SIZE32 4 |
53 | |
54 | /* CROSSCOMPILE and MULTIARCH are going to affect pp_pack() and pp_unpack(). |
55 | --jhi Feb 1999 */ |
56 | |
57 | #if SHORTSIZE != SIZE16 || LONGSIZE != SIZE32 |
58 | # define PERL_NATINT_PACK |
59 | #endif |
60 | |
61 | #if LONGSIZE > 4 && defined(_CRAY) |
62 | # if BYTEORDER == 0x12345678 |
63 | # define OFF16(p) (char*)(p) |
64 | # define OFF32(p) (char*)(p) |
65 | # else |
66 | # if BYTEORDER == 0x87654321 |
67 | # define OFF16(p) ((char*)(p) + (sizeof(U16) - SIZE16)) |
68 | # define OFF32(p) ((char*)(p) + (sizeof(U32) - SIZE32)) |
69 | # else |
70 | }}}} bad cray byte order |
71 | # endif |
72 | # endif |
73 | # define COPY16(s,p) (*(p) = 0, Copy(s, OFF16(p), SIZE16, char)) |
74 | # define COPY32(s,p) (*(p) = 0, Copy(s, OFF32(p), SIZE32, char)) |
75 | # define COPYNN(s,p,n) (*(p) = 0, Copy(s, (char *)(p), n, char)) |
76 | # define CAT16(sv,p) sv_catpvn(sv, OFF16(p), SIZE16) |
77 | # define CAT32(sv,p) sv_catpvn(sv, OFF32(p), SIZE32) |
78 | #else |
79 | # define COPY16(s,p) Copy(s, p, SIZE16, char) |
80 | # define COPY32(s,p) Copy(s, p, SIZE32, char) |
81 | # define COPYNN(s,p,n) Copy(s, (char *)(p), n, char) |
82 | # define CAT16(sv,p) sv_catpvn(sv, (char*)(p), SIZE16) |
83 | # define CAT32(sv,p) sv_catpvn(sv, (char*)(p), SIZE32) |
84 | #endif |
85 | |
49704364 |
86 | /* Avoid stack overflow due to pathological templates. 100 should be plenty. */ |
87 | #define MAX_SUB_TEMPLATE_LEVEL 100 |
88 | |
89 | /* flags */ |
90 | #define FLAG_UNPACK_ONLY_ONE 0x10 |
91 | #define FLAG_UNPACK_DO_UTF8 0x08 |
92 | #define FLAG_SLASH 0x04 |
93 | #define FLAG_COMMA 0x02 |
94 | #define FLAG_PACK 0x01 |
95 | |
a6ec74c1 |
96 | STATIC SV * |
97 | S_mul128(pTHX_ SV *sv, U8 m) |
98 | { |
99 | STRLEN len; |
100 | char *s = SvPV(sv, len); |
101 | char *t; |
102 | U32 i = 0; |
103 | |
104 | if (!strnEQ(s, "0000", 4)) { /* need to grow sv */ |
105 | SV *tmpNew = newSVpvn("0000000000", 10); |
106 | |
107 | sv_catsv(tmpNew, sv); |
108 | SvREFCNT_dec(sv); /* free old sv */ |
109 | sv = tmpNew; |
110 | s = SvPV(sv, len); |
111 | } |
112 | t = s + len - 1; |
113 | while (!*t) /* trailing '\0'? */ |
114 | t--; |
115 | while (t > s) { |
116 | i = ((*t - '0') << 7) + m; |
eb160463 |
117 | *(t--) = '0' + (char)(i % 10); |
118 | m = (char)(i / 10); |
a6ec74c1 |
119 | } |
120 | return (sv); |
121 | } |
122 | |
123 | /* Explosives and implosives. */ |
124 | |
125 | #if 'I' == 73 && 'J' == 74 |
126 | /* On an ASCII/ISO kind of system */ |
127 | #define ISUUCHAR(ch) ((ch) >= ' ' && (ch) < 'a') |
128 | #else |
129 | /* |
130 | Some other sort of character set - use memchr() so we don't match |
131 | the null byte. |
132 | */ |
133 | #define ISUUCHAR(ch) (memchr(PL_uuemap, (ch), sizeof(PL_uuemap)-1) || (ch) == ' ') |
134 | #endif |
135 | |
62f95557 |
136 | #define TYPE_IS_SHRIEKING 0x100 |
137 | |
206947d2 |
138 | /* Returns the sizeof() struct described by pat */ |
028d1f6d |
139 | STATIC I32 |
49704364 |
140 | S_measure_struct(pTHX_ register tempsym_t* symptr) |
206947d2 |
141 | { |
49704364 |
142 | register I32 len = 0; |
206947d2 |
143 | register I32 total = 0; |
49704364 |
144 | int star; |
145 | |
206947d2 |
146 | register int size; |
147 | |
49704364 |
148 | while (next_symbol(symptr)) { |
206947d2 |
149 | |
49704364 |
150 | switch( symptr->howlen ){ |
151 | case e_no_len: |
152 | case e_number: |
153 | len = symptr->length; |
154 | break; |
155 | case e_star: |
156 | Perl_croak(aTHX_ "Within []-length '*' not allowed in %s", |
157 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); |
158 | break; |
159 | } |
160 | |
161 | switch(symptr->code) { |
206947d2 |
162 | default: |
49704364 |
163 | Perl_croak(aTHX_ "Invalid type '%c' in %s", |
164 | (int)symptr->code, |
165 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); |
206947d2 |
166 | case '@': |
167 | case '/': |
168 | case 'U': /* XXXX Is it correct? */ |
169 | case 'w': |
170 | case 'u': |
49704364 |
171 | Perl_croak(aTHX_ "Within []-length '%c' not allowed in %s", |
172 | (int)symptr->code, |
173 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); |
206947d2 |
174 | case '%': |
175 | size = 0; |
176 | break; |
177 | case '(': |
178 | { |
49704364 |
179 | tempsym_t savsym = *symptr; |
180 | symptr->patptr = savsym.grpbeg; |
181 | symptr->patend = savsym.grpend; |
62f95557 |
182 | /* XXXX Theoretically, we need to measure many times at different |
183 | positions, since the subexpression may contain |
184 | alignment commands, but be not of aligned length. |
185 | Need to detect this and croak(). */ |
49704364 |
186 | size = measure_struct(symptr); |
187 | *symptr = savsym; |
206947d2 |
188 | break; |
189 | } |
62f95557 |
190 | case 'X' | TYPE_IS_SHRIEKING: |
191 | /* XXXX Is this useful? Then need to treat MEASURE_BACKWARDS. */ |
192 | if (!len) /* Avoid division by 0 */ |
193 | len = 1; |
194 | len = total % len; /* Assumed: the start is aligned. */ |
195 | /* FALL THROUGH */ |
206947d2 |
196 | case 'X': |
197 | size = -1; |
198 | if (total < len) |
49704364 |
199 | Perl_croak(aTHX_ "'X' outside of string in %s", |
200 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); |
206947d2 |
201 | break; |
62f95557 |
202 | case 'x' | TYPE_IS_SHRIEKING: |
203 | if (!len) /* Avoid division by 0 */ |
204 | len = 1; |
205 | star = total % len; /* Assumed: the start is aligned. */ |
206 | if (star) /* Other portable ways? */ |
207 | len = len - star; |
208 | else |
209 | len = 0; |
210 | /* FALL THROUGH */ |
206947d2 |
211 | case 'x': |
212 | case 'A': |
213 | case 'Z': |
214 | case 'a': |
215 | case 'c': |
216 | case 'C': |
217 | size = 1; |
218 | break; |
219 | case 'B': |
220 | case 'b': |
221 | len = (len + 7)/8; |
222 | size = 1; |
223 | break; |
224 | case 'H': |
225 | case 'h': |
226 | len = (len + 1)/2; |
227 | size = 1; |
228 | break; |
49704364 |
229 | case 's' | TYPE_IS_SHRIEKING: |
230 | #if SHORTSIZE != SIZE16 |
231 | size = sizeof(short); |
232 | break; |
233 | #else |
234 | /* FALL THROUGH */ |
235 | #endif |
206947d2 |
236 | case 's': |
206947d2 |
237 | size = SIZE16; |
49704364 |
238 | break; |
239 | case 'S' | TYPE_IS_SHRIEKING: |
240 | #if SHORTSIZE != SIZE16 |
241 | size = sizeof(unsigned short); |
242 | break; |
206947d2 |
243 | #else |
49704364 |
244 | /* FALL THROUGH */ |
206947d2 |
245 | #endif |
206947d2 |
246 | case 'v': |
247 | case 'n': |
248 | case 'S': |
206947d2 |
249 | size = SIZE16; |
206947d2 |
250 | break; |
49704364 |
251 | case 'i' | TYPE_IS_SHRIEKING: |
206947d2 |
252 | case 'i': |
253 | size = sizeof(int); |
254 | break; |
49704364 |
255 | case 'I' | TYPE_IS_SHRIEKING: |
206947d2 |
256 | case 'I': |
257 | size = sizeof(unsigned int); |
258 | break; |
92d41999 |
259 | case 'j': |
260 | size = IVSIZE; |
261 | break; |
262 | case 'J': |
263 | size = UVSIZE; |
264 | break; |
49704364 |
265 | case 'l' | TYPE_IS_SHRIEKING: |
266 | #if LONGSIZE != SIZE32 |
267 | size = sizeof(long); |
268 | break; |
269 | #else |
270 | /* FALL THROUGH */ |
271 | #endif |
206947d2 |
272 | case 'l': |
206947d2 |
273 | size = SIZE32; |
49704364 |
274 | break; |
275 | case 'L' | TYPE_IS_SHRIEKING: |
276 | #if LONGSIZE != SIZE32 |
277 | size = sizeof(unsigned long); |
278 | break; |
206947d2 |
279 | #else |
49704364 |
280 | /* FALL THROUGH */ |
206947d2 |
281 | #endif |
206947d2 |
282 | case 'V': |
283 | case 'N': |
284 | case 'L': |
206947d2 |
285 | size = SIZE32; |
206947d2 |
286 | break; |
287 | case 'P': |
288 | len = 1; |
289 | /* FALL THROUGH */ |
290 | case 'p': |
291 | size = sizeof(char*); |
292 | break; |
293 | #ifdef HAS_QUAD |
294 | case 'q': |
295 | size = sizeof(Quad_t); |
296 | break; |
297 | case 'Q': |
298 | size = sizeof(Uquad_t); |
299 | break; |
300 | #endif |
301 | case 'f': |
206947d2 |
302 | size = sizeof(float); |
303 | break; |
304 | case 'd': |
206947d2 |
305 | size = sizeof(double); |
306 | break; |
92d41999 |
307 | case 'F': |
308 | size = NVSIZE; |
309 | break; |
310 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) |
311 | case 'D': |
312 | size = LONG_DOUBLESIZE; |
313 | break; |
314 | #endif |
206947d2 |
315 | } |
316 | total += len * size; |
317 | } |
318 | return total; |
319 | } |
320 | |
49704364 |
321 | |
322 | /* locate matching closing parenthesis or bracket |
323 | * returns char pointer to char after match, or NULL |
324 | */ |
325 | STATIC char * |
326 | S_group_end(pTHX_ register char *patptr, register char *patend, char ender) |
18529408 |
327 | { |
49704364 |
328 | while (patptr < patend) { |
329 | char c = *patptr++; |
330 | |
331 | if (isSPACE(c)) |
332 | continue; |
333 | else if (c == ender) |
334 | return patptr-1; |
335 | else if (c == '#') { |
336 | while (patptr < patend && *patptr != '\n') |
337 | patptr++; |
338 | continue; |
339 | } else if (c == '(') |
340 | patptr = group_end(patptr, patend, ')') + 1; |
341 | else if (c == '[') |
342 | patptr = group_end(patptr, patend, ']') + 1; |
18529408 |
343 | } |
49704364 |
344 | Perl_croak(aTHX_ "No group ending character '%c' found in template", |
345 | ender); |
346 | return 0; |
18529408 |
347 | } |
348 | |
49704364 |
349 | |
350 | /* Convert unsigned decimal number to binary. |
351 | * Expects a pointer to the first digit and address of length variable |
352 | * Advances char pointer to 1st non-digit char and returns number |
353 | */ |
18529408 |
354 | STATIC char * |
49704364 |
355 | S_get_num(pTHX_ register char *patptr, I32 *lenptr ) |
356 | { |
357 | I32 len = *patptr++ - '0'; |
358 | while (isDIGIT(*patptr)) { |
359 | if (len >= 0x7FFFFFFF/10) |
360 | Perl_croak(aTHX_ "pack/unpack repeat count overflow"); |
361 | len = (len * 10) + (*patptr++ - '0'); |
362 | } |
363 | *lenptr = len; |
364 | return patptr; |
365 | } |
366 | |
367 | /* The marvellous template parsing routine: Using state stored in *symptr, |
368 | * locates next template code and count |
369 | */ |
370 | STATIC bool |
371 | S_next_symbol(pTHX_ register tempsym_t* symptr ) |
18529408 |
372 | { |
49704364 |
373 | register char* patptr = symptr->patptr; |
374 | register char* patend = symptr->patend; |
375 | |
376 | symptr->flags &= ~FLAG_SLASH; |
377 | |
378 | while (patptr < patend) { |
379 | if (isSPACE(*patptr)) |
380 | patptr++; |
381 | else if (*patptr == '#') { |
382 | patptr++; |
383 | while (patptr < patend && *patptr != '\n') |
384 | patptr++; |
385 | if (patptr < patend) |
386 | patptr++; |
387 | } else { |
388 | /* We should have found a template code */ |
389 | I32 code = *patptr++ & 0xFF; |
390 | |
391 | if (code == ','){ /* grandfather in commas but with a warning */ |
392 | if (((symptr->flags & FLAG_COMMA) == 0) && ckWARN(WARN_UNPACK)){ |
393 | symptr->flags |= FLAG_COMMA; |
394 | Perl_warner(aTHX_ packWARN(WARN_UNPACK), |
395 | "Invalid type ',' in %s", |
396 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); |
397 | } |
398 | continue; |
399 | } |
400 | |
401 | /* for '(', skip to ')' */ |
402 | if (code == '(') { |
403 | if( isDIGIT(*patptr) || *patptr == '*' || *patptr == '[' ) |
404 | Perl_croak(aTHX_ "()-group starts with a count in %s", |
405 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); |
406 | symptr->grpbeg = patptr; |
407 | patptr = 1 + ( symptr->grpend = group_end(patptr, patend, ')') ); |
408 | if( symptr->level >= MAX_SUB_TEMPLATE_LEVEL ) |
409 | Perl_croak(aTHX_ "Too deeply nested ()-groups in %s", |
410 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); |
411 | } |
412 | |
413 | /* test for '!' modifier */ |
414 | if (patptr < patend && *patptr == '!') { |
415 | static const char natstr[] = "sSiIlLxX"; |
416 | patptr++; |
417 | if (strchr(natstr, code)) |
418 | code |= TYPE_IS_SHRIEKING; |
419 | else |
420 | Perl_croak(aTHX_ "'!' allowed only after types %s in pack/unpack", |
421 | natstr, symptr->flags & FLAG_PACK ? "pack" : "unpack" ); |
422 | } |
423 | |
424 | /* look for count and/or / */ |
425 | if (patptr < patend) { |
426 | if (isDIGIT(*patptr)) { |
427 | patptr = get_num( patptr, &symptr->length ); |
428 | symptr->howlen = e_number; |
429 | |
430 | } else if (*patptr == '*') { |
431 | patptr++; |
432 | symptr->howlen = e_star; |
433 | |
434 | } else if (*patptr == '[') { |
435 | char* lenptr = ++patptr; |
436 | symptr->howlen = e_number; |
437 | patptr = group_end( patptr, patend, ']' ) + 1; |
438 | /* what kind of [] is it? */ |
439 | if (isDIGIT(*lenptr)) { |
440 | lenptr = get_num( lenptr, &symptr->length ); |
441 | if( *lenptr != ']' ) |
442 | Perl_croak(aTHX_ "Malformed integer in [] in %s", |
443 | symptr->flags & FLAG_PACK ? "pack" : "unpack"); |
444 | } else { |
445 | tempsym_t savsym = *symptr; |
446 | symptr->patend = patptr-1; |
447 | symptr->patptr = lenptr; |
448 | savsym.length = measure_struct(symptr); |
449 | *symptr = savsym; |
450 | } |
451 | } else { |
452 | symptr->howlen = e_no_len; |
453 | symptr->length = 1; |
454 | } |
455 | |
456 | /* try to find / */ |
457 | while (patptr < patend) { |
458 | if (isSPACE(*patptr)) |
459 | patptr++; |
460 | else if (*patptr == '#') { |
461 | patptr++; |
462 | while (patptr < patend && *patptr != '\n') |
463 | patptr++; |
464 | if (patptr < patend) |
465 | patptr++; |
466 | } else { |
467 | if( *patptr == '/' ){ |
468 | symptr->flags |= FLAG_SLASH; |
469 | patptr++; |
470 | if( patptr < patend && |
471 | (isDIGIT(*patptr) || *patptr == '*' || *patptr == '[') ) |
472 | Perl_croak(aTHX_ "'/' does not take a repeat count in %s", |
473 | symptr->flags & FLAG_PACK ? "pack" : "unpack" ); |
474 | } |
475 | break; |
476 | } |
18529408 |
477 | } |
49704364 |
478 | } else { |
479 | /* at end - no count, no / */ |
480 | symptr->howlen = e_no_len; |
481 | symptr->length = 1; |
482 | } |
483 | |
484 | symptr->code = code; |
485 | symptr->patptr = patptr; |
486 | return TRUE; |
18529408 |
487 | } |
49704364 |
488 | } |
489 | symptr->patptr = patptr; |
490 | return FALSE; |
18529408 |
491 | } |
492 | |
18529408 |
493 | /* |
494 | =for apidoc unpack_str |
495 | |
496 | The engine implementing unpack() Perl function. |
497 | |
498 | =cut */ |
499 | |
500 | I32 |
501 | Perl_unpack_str(pTHX_ char *pat, register char *patend, register char *s, char *strbeg, char *strend, char **new_s, I32 ocnt, U32 flags) |
a6ec74c1 |
502 | { |
49704364 |
503 | tempsym_t sym = { 0 }; |
504 | sym.patptr = pat; |
505 | sym.patend = patend; |
506 | sym.flags = flags; |
507 | |
508 | return unpack_rec(&sym, s, s, strend, NULL ); |
509 | } |
510 | |
511 | STATIC |
512 | I32 |
513 | S_unpack_rec(pTHX_ register tempsym_t* symptr, register char *s, char *strbeg, char *strend, char **new_s ) |
514 | { |
a6ec74c1 |
515 | dSP; |
a6ec74c1 |
516 | I32 datumtype; |
49704364 |
517 | register I32 len = 0; |
a6ec74c1 |
518 | register I32 bits = 0; |
519 | register char *str; |
18529408 |
520 | SV *sv; |
521 | I32 start_sp_offset = SP - PL_stack_base; |
49704364 |
522 | howlen_t howlen; |
a6ec74c1 |
523 | |
524 | /* These must not be in registers: */ |
525 | short ashort; |
526 | int aint; |
527 | long along; |
528 | #ifdef HAS_QUAD |
529 | Quad_t aquad; |
530 | #endif |
531 | U16 aushort; |
532 | unsigned int auint; |
533 | U32 aulong; |
534 | #ifdef HAS_QUAD |
535 | Uquad_t auquad; |
536 | #endif |
537 | char *aptr; |
538 | float afloat; |
539 | double adouble; |
540 | I32 checksum = 0; |
92d41999 |
541 | UV cuv = 0; |
a6ec74c1 |
542 | NV cdouble = 0.0; |
92d41999 |
543 | const int bits_in_uv = 8 * sizeof(cuv); |
49704364 |
544 | char* strrelbeg = s; |
545 | bool beyond = FALSE; |
546 | bool unpack_only_one = (symptr->flags & FLAG_UNPACK_ONLY_ONE) != 0; |
547 | |
92d41999 |
548 | IV aiv; |
549 | UV auv; |
550 | NV anv; |
551 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) |
552 | long double aldouble; |
553 | #endif |
a6ec74c1 |
554 | |
49704364 |
555 | while (next_symbol(symptr)) { |
556 | datumtype = symptr->code; |
206947d2 |
557 | /* do first one only unless in list context |
558 | / is implemented by unpacking the count, then poping it from the |
559 | stack, so must check that we're not in the middle of a / */ |
49704364 |
560 | if ( unpack_only_one |
206947d2 |
561 | && (SP - PL_stack_base == start_sp_offset + 1) |
49704364 |
562 | && (datumtype != '/') ) /* XXX can this be omitted */ |
206947d2 |
563 | break; |
49704364 |
564 | |
565 | switch( howlen = symptr->howlen ){ |
566 | case e_no_len: |
567 | case e_number: |
568 | len = symptr->length; |
569 | break; |
570 | case e_star: |
571 | len = strend - strbeg; /* long enough */ |
572 | break; |
573 | } |
18529408 |
574 | |
a6ec74c1 |
575 | redo_switch: |
49704364 |
576 | beyond = s >= strend; |
a6ec74c1 |
577 | switch(datumtype) { |
578 | default: |
49704364 |
579 | Perl_croak(aTHX_ "Invalid type '%c' in unpack", (int)datumtype ); |
580 | |
a6ec74c1 |
581 | case '%': |
49704364 |
582 | if (howlen == e_no_len) |
18529408 |
583 | len = 16; /* len is not specified */ |
a6ec74c1 |
584 | checksum = len; |
92d41999 |
585 | cuv = 0; |
a6ec74c1 |
586 | cdouble = 0; |
18529408 |
587 | continue; |
a6ec74c1 |
588 | break; |
18529408 |
589 | case '(': |
590 | { |
18529408 |
591 | char *ss = s; /* Move from register */ |
49704364 |
592 | tempsym_t savsym = *symptr; |
593 | symptr->patend = savsym.grpend; |
594 | symptr->level++; |
18529408 |
595 | PUTBACK; |
596 | while (len--) { |
49704364 |
597 | symptr->patptr = savsym.grpbeg; |
598 | unpack_rec(symptr, ss, strbeg, strend, &ss ); |
599 | if (ss == strend && savsym.howlen == e_star) |
600 | break; /* No way to continue */ |
18529408 |
601 | } |
602 | SPAGAIN; |
603 | s = ss; |
49704364 |
604 | savsym.flags = symptr->flags; |
605 | *symptr = savsym; |
18529408 |
606 | break; |
607 | } |
a6ec74c1 |
608 | case '@': |
49704364 |
609 | if (len > strend - strrelbeg) |
610 | Perl_croak(aTHX_ "'@' outside of string in unpack"); |
611 | s = strrelbeg + len; |
a6ec74c1 |
612 | break; |
62f95557 |
613 | case 'X' | TYPE_IS_SHRIEKING: |
614 | if (!len) /* Avoid division by 0 */ |
615 | len = 1; |
616 | len = (s - strbeg) % len; |
617 | /* FALL THROUGH */ |
a6ec74c1 |
618 | case 'X': |
619 | if (len > s - strbeg) |
49704364 |
620 | Perl_croak(aTHX_ "'X' outside of string in unpack" ); |
a6ec74c1 |
621 | s -= len; |
622 | break; |
62f95557 |
623 | case 'x' | TYPE_IS_SHRIEKING: |
624 | if (!len) /* Avoid division by 0 */ |
625 | len = 1; |
626 | aint = (s - strbeg) % len; |
627 | if (aint) /* Other portable ways? */ |
628 | len = len - aint; |
629 | else |
630 | len = 0; |
631 | /* FALL THROUGH */ |
a6ec74c1 |
632 | case 'x': |
633 | if (len > strend - s) |
49704364 |
634 | Perl_croak(aTHX_ "'x' outside of string in unpack"); |
a6ec74c1 |
635 | s += len; |
636 | break; |
637 | case '/': |
49704364 |
638 | Perl_croak(aTHX_ "'/' must follow a numeric type in unpack"); |
639 | break; |
a6ec74c1 |
640 | case 'A': |
641 | case 'Z': |
642 | case 'a': |
643 | if (len > strend - s) |
644 | len = strend - s; |
645 | if (checksum) |
646 | goto uchar_checksum; |
647 | sv = NEWSV(35, len); |
648 | sv_setpvn(sv, s, len); |
49704364 |
649 | if (len > 0 && (datumtype == 'A' || datumtype == 'Z')) { |
a6ec74c1 |
650 | aptr = s; /* borrow register */ |
651 | if (datumtype == 'Z') { /* 'Z' strips stuff after first null */ |
652 | s = SvPVX(sv); |
653 | while (*s) |
654 | s++; |
49704364 |
655 | if (howlen == e_star) /* exact for 'Z*' */ |
d50dd4e4 |
656 | len = s - SvPVX(sv) + 1; |
a6ec74c1 |
657 | } |
658 | else { /* 'A' strips both nulls and spaces */ |
659 | s = SvPVX(sv) + len - 1; |
660 | while (s >= SvPVX(sv) && (!*s || isSPACE(*s))) |
661 | s--; |
662 | *++s = '\0'; |
663 | } |
664 | SvCUR_set(sv, s - SvPVX(sv)); |
665 | s = aptr; /* unborrow register */ |
666 | } |
d50dd4e4 |
667 | s += len; |
a6ec74c1 |
668 | XPUSHs(sv_2mortal(sv)); |
669 | break; |
670 | case 'B': |
671 | case 'b': |
49704364 |
672 | if (howlen == e_star || len > (strend - s) * 8) |
a6ec74c1 |
673 | len = (strend - s) * 8; |
674 | if (checksum) { |
675 | if (!PL_bitcount) { |
676 | Newz(601, PL_bitcount, 256, char); |
677 | for (bits = 1; bits < 256; bits++) { |
678 | if (bits & 1) PL_bitcount[bits]++; |
679 | if (bits & 2) PL_bitcount[bits]++; |
680 | if (bits & 4) PL_bitcount[bits]++; |
681 | if (bits & 8) PL_bitcount[bits]++; |
682 | if (bits & 16) PL_bitcount[bits]++; |
683 | if (bits & 32) PL_bitcount[bits]++; |
684 | if (bits & 64) PL_bitcount[bits]++; |
685 | if (bits & 128) PL_bitcount[bits]++; |
686 | } |
687 | } |
688 | while (len >= 8) { |
92d41999 |
689 | cuv += PL_bitcount[*(unsigned char*)s++]; |
a6ec74c1 |
690 | len -= 8; |
691 | } |
692 | if (len) { |
693 | bits = *s; |
694 | if (datumtype == 'b') { |
695 | while (len-- > 0) { |
92d41999 |
696 | if (bits & 1) cuv++; |
a6ec74c1 |
697 | bits >>= 1; |
698 | } |
699 | } |
700 | else { |
701 | while (len-- > 0) { |
92d41999 |
702 | if (bits & 128) cuv++; |
a6ec74c1 |
703 | bits <<= 1; |
704 | } |
705 | } |
706 | } |
707 | break; |
708 | } |
709 | sv = NEWSV(35, len + 1); |
710 | SvCUR_set(sv, len); |
711 | SvPOK_on(sv); |
712 | str = SvPVX(sv); |
713 | if (datumtype == 'b') { |
714 | aint = len; |
715 | for (len = 0; len < aint; len++) { |
716 | if (len & 7) /*SUPPRESS 595*/ |
717 | bits >>= 1; |
718 | else |
719 | bits = *s++; |
720 | *str++ = '0' + (bits & 1); |
721 | } |
722 | } |
723 | else { |
724 | aint = len; |
725 | for (len = 0; len < aint; len++) { |
726 | if (len & 7) |
727 | bits <<= 1; |
728 | else |
729 | bits = *s++; |
730 | *str++ = '0' + ((bits & 128) != 0); |
731 | } |
732 | } |
733 | *str = '\0'; |
734 | XPUSHs(sv_2mortal(sv)); |
735 | break; |
736 | case 'H': |
737 | case 'h': |
49704364 |
738 | if (howlen == e_star || len > (strend - s) * 2) |
a6ec74c1 |
739 | len = (strend - s) * 2; |
740 | sv = NEWSV(35, len + 1); |
741 | SvCUR_set(sv, len); |
742 | SvPOK_on(sv); |
743 | str = SvPVX(sv); |
744 | if (datumtype == 'h') { |
745 | aint = len; |
746 | for (len = 0; len < aint; len++) { |
747 | if (len & 1) |
748 | bits >>= 4; |
749 | else |
750 | bits = *s++; |
751 | *str++ = PL_hexdigit[bits & 15]; |
752 | } |
753 | } |
754 | else { |
755 | aint = len; |
756 | for (len = 0; len < aint; len++) { |
757 | if (len & 1) |
758 | bits <<= 4; |
759 | else |
760 | bits = *s++; |
761 | *str++ = PL_hexdigit[(bits >> 4) & 15]; |
762 | } |
763 | } |
764 | *str = '\0'; |
765 | XPUSHs(sv_2mortal(sv)); |
766 | break; |
767 | case 'c': |
768 | if (len > strend - s) |
769 | len = strend - s; |
770 | if (checksum) { |
771 | while (len-- > 0) { |
772 | aint = *s++; |
773 | if (aint >= 128) /* fake up signed chars */ |
774 | aint -= 256; |
fa8ec7c1 |
775 | if (checksum > bits_in_uv) |
776 | cdouble += (NV)aint; |
777 | else |
92d41999 |
778 | cuv += aint; |
a6ec74c1 |
779 | } |
780 | } |
781 | else { |
49704364 |
782 | if (len && unpack_only_one) |
c8f824eb |
783 | len = 1; |
a6ec74c1 |
784 | EXTEND(SP, len); |
785 | EXTEND_MORTAL(len); |
786 | while (len-- > 0) { |
787 | aint = *s++; |
788 | if (aint >= 128) /* fake up signed chars */ |
789 | aint -= 256; |
790 | sv = NEWSV(36, 0); |
791 | sv_setiv(sv, (IV)aint); |
792 | PUSHs(sv_2mortal(sv)); |
793 | } |
794 | } |
795 | break; |
796 | case 'C': |
35bcd338 |
797 | unpack_C: /* unpack U will jump here if not UTF-8 */ |
798 | if (len == 0) { |
49704364 |
799 | symptr->flags &= ~FLAG_UNPACK_DO_UTF8; |
35bcd338 |
800 | break; |
801 | } |
a6ec74c1 |
802 | if (len > strend - s) |
803 | len = strend - s; |
804 | if (checksum) { |
805 | uchar_checksum: |
806 | while (len-- > 0) { |
807 | auint = *s++ & 255; |
92d41999 |
808 | cuv += auint; |
a6ec74c1 |
809 | } |
810 | } |
811 | else { |
49704364 |
812 | if (len && unpack_only_one) |
c8f824eb |
813 | len = 1; |
a6ec74c1 |
814 | EXTEND(SP, len); |
815 | EXTEND_MORTAL(len); |
816 | while (len-- > 0) { |
817 | auint = *s++ & 255; |
818 | sv = NEWSV(37, 0); |
819 | sv_setiv(sv, (IV)auint); |
820 | PUSHs(sv_2mortal(sv)); |
821 | } |
822 | } |
823 | break; |
824 | case 'U': |
35bcd338 |
825 | if (len == 0) { |
49704364 |
826 | symptr->flags |= FLAG_UNPACK_DO_UTF8; |
35bcd338 |
827 | break; |
828 | } |
49704364 |
829 | if ((symptr->flags & FLAG_UNPACK_DO_UTF8) == 0) |
35bcd338 |
830 | goto unpack_C; |
a6ec74c1 |
831 | if (len > strend - s) |
832 | len = strend - s; |
833 | if (checksum) { |
834 | while (len-- > 0 && s < strend) { |
835 | STRLEN alen; |
872c91ae |
836 | auint = NATIVE_TO_UNI(utf8n_to_uvchr((U8*)s, strend - s, &alen, ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANYUV)); |
a6ec74c1 |
837 | along = alen; |
838 | s += along; |
fa8ec7c1 |
839 | if (checksum > bits_in_uv) |
a6ec74c1 |
840 | cdouble += (NV)auint; |
841 | else |
92d41999 |
842 | cuv += auint; |
a6ec74c1 |
843 | } |
844 | } |
845 | else { |
49704364 |
846 | if (len && unpack_only_one) |
c8f824eb |
847 | len = 1; |
a6ec74c1 |
848 | EXTEND(SP, len); |
849 | EXTEND_MORTAL(len); |
850 | while (len-- > 0 && s < strend) { |
851 | STRLEN alen; |
872c91ae |
852 | auint = NATIVE_TO_UNI(utf8n_to_uvchr((U8*)s, strend - s, &alen, ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANYUV)); |
a6ec74c1 |
853 | along = alen; |
854 | s += along; |
855 | sv = NEWSV(37, 0); |
856 | sv_setuv(sv, (UV)auint); |
857 | PUSHs(sv_2mortal(sv)); |
858 | } |
859 | } |
860 | break; |
49704364 |
861 | case 's' | TYPE_IS_SHRIEKING: |
862 | #if SHORTSIZE != SIZE16 |
863 | along = (strend - s) / sizeof(short); |
a6ec74c1 |
864 | if (len > along) |
865 | len = along; |
866 | if (checksum) { |
49704364 |
867 | short ashort; |
868 | while (len-- > 0) { |
869 | COPYNN(s, &ashort, sizeof(short)); |
870 | s += sizeof(short); |
871 | if (checksum > bits_in_uv) |
872 | cdouble += (NV)ashort; |
873 | else |
874 | cuv += ashort; |
a6ec74c1 |
875 | |
a6ec74c1 |
876 | } |
49704364 |
877 | } |
878 | else { |
879 | if (len && unpack_only_one) |
880 | len = 1; |
881 | EXTEND(SP, len); |
882 | EXTEND_MORTAL(len); |
883 | short ashort; |
884 | while (len-- > 0) { |
885 | COPYNN(s, &ashort, sizeof(short)); |
886 | s += sizeof(short); |
887 | sv = NEWSV(38, 0); |
888 | sv_setiv(sv, (IV)ashort); |
889 | PUSHs(sv_2mortal(sv)); |
890 | } |
891 | } |
892 | break; |
893 | #else |
894 | /* Fallthrough! */ |
a6ec74c1 |
895 | #endif |
49704364 |
896 | case 's': |
897 | along = (strend - s) / SIZE16; |
898 | if (len > along) |
899 | len = along; |
900 | if (checksum) { |
901 | while (len-- > 0) { |
902 | COPY16(s, &ashort); |
a6ec74c1 |
903 | #if SHORTSIZE > SIZE16 |
49704364 |
904 | if (ashort > 32767) |
905 | ashort -= 65536; |
a6ec74c1 |
906 | #endif |
49704364 |
907 | s += SIZE16; |
908 | if (checksum > bits_in_uv) |
909 | cdouble += (NV)ashort; |
910 | else |
911 | cuv += ashort; |
a6ec74c1 |
912 | } |
913 | } |
914 | else { |
49704364 |
915 | if (len && unpack_only_one) |
c8f824eb |
916 | len = 1; |
a6ec74c1 |
917 | EXTEND(SP, len); |
918 | EXTEND_MORTAL(len); |
49704364 |
919 | |
920 | while (len-- > 0) { |
921 | COPY16(s, &ashort); |
a6ec74c1 |
922 | #if SHORTSIZE > SIZE16 |
49704364 |
923 | if (ashort > 32767) |
924 | ashort -= 65536; |
a6ec74c1 |
925 | #endif |
49704364 |
926 | s += SIZE16; |
927 | sv = NEWSV(38, 0); |
928 | sv_setiv(sv, (IV)ashort); |
929 | PUSHs(sv_2mortal(sv)); |
a6ec74c1 |
930 | } |
931 | } |
932 | break; |
49704364 |
933 | case 'S' | TYPE_IS_SHRIEKING: |
934 | #if SHORTSIZE != SIZE16 |
935 | along = (strend - s) / SIZE16; |
936 | if (len > along) |
937 | len = along; |
938 | if (checksum) { |
939 | unsigned short aushort; |
940 | while (len-- > 0) { |
941 | COPYNN(s, &aushort, sizeof(unsigned short)); |
942 | s += sizeof(unsigned short); |
943 | if (checksum > bits_in_uv) |
944 | cdouble += (NV)aushort; |
945 | else |
946 | cuv += aushort; |
947 | } |
948 | } |
949 | else { |
950 | if (len && unpack_only_one) |
951 | len = 1; |
952 | EXTEND(SP, len); |
953 | EXTEND_MORTAL(len); |
954 | while (len-- > 0) { |
955 | unsigned short aushort; |
956 | COPYNN(s, &aushort, sizeof(unsigned short)); |
957 | s += sizeof(unsigned short); |
958 | sv = NEWSV(39, 0); |
959 | sv_setiv(sv, (UV)aushort); |
960 | PUSHs(sv_2mortal(sv)); |
961 | } |
962 | } |
963 | break; |
964 | #else |
965 | /* Fallhrough! */ |
966 | #endif |
a6ec74c1 |
967 | case 'v': |
968 | case 'n': |
969 | case 'S': |
a6ec74c1 |
970 | along = (strend - s) / SIZE16; |
a6ec74c1 |
971 | if (len > along) |
972 | len = along; |
973 | if (checksum) { |
49704364 |
974 | while (len-- > 0) { |
975 | COPY16(s, &aushort); |
976 | s += SIZE16; |
a6ec74c1 |
977 | #ifdef HAS_NTOHS |
49704364 |
978 | if (datumtype == 'n') |
979 | aushort = PerlSock_ntohs(aushort); |
a6ec74c1 |
980 | #endif |
981 | #ifdef HAS_VTOHS |
49704364 |
982 | if (datumtype == 'v') |
983 | aushort = vtohs(aushort); |
a6ec74c1 |
984 | #endif |
49704364 |
985 | if (checksum > bits_in_uv) |
986 | cdouble += (NV)aushort; |
987 | else |
988 | cuv += aushort; |
a6ec74c1 |
989 | } |
990 | } |
991 | else { |
49704364 |
992 | if (len && unpack_only_one) |
c8f824eb |
993 | len = 1; |
a6ec74c1 |
994 | EXTEND(SP, len); |
995 | EXTEND_MORTAL(len); |
49704364 |
996 | while (len-- > 0) { |
997 | COPY16(s, &aushort); |
998 | s += SIZE16; |
999 | sv = NEWSV(39, 0); |
a6ec74c1 |
1000 | #ifdef HAS_NTOHS |
49704364 |
1001 | if (datumtype == 'n') |
1002 | aushort = PerlSock_ntohs(aushort); |
a6ec74c1 |
1003 | #endif |
1004 | #ifdef HAS_VTOHS |
49704364 |
1005 | if (datumtype == 'v') |
1006 | aushort = vtohs(aushort); |
a6ec74c1 |
1007 | #endif |
49704364 |
1008 | sv_setiv(sv, (UV)aushort); |
1009 | PUSHs(sv_2mortal(sv)); |
a6ec74c1 |
1010 | } |
1011 | } |
1012 | break; |
1013 | case 'i': |
49704364 |
1014 | case 'i' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
1015 | along = (strend - s) / sizeof(int); |
1016 | if (len > along) |
1017 | len = along; |
1018 | if (checksum) { |
1019 | while (len-- > 0) { |
1020 | Copy(s, &aint, 1, int); |
1021 | s += sizeof(int); |
fa8ec7c1 |
1022 | if (checksum > bits_in_uv) |
a6ec74c1 |
1023 | cdouble += (NV)aint; |
1024 | else |
92d41999 |
1025 | cuv += aint; |
a6ec74c1 |
1026 | } |
1027 | } |
1028 | else { |
49704364 |
1029 | if (len && unpack_only_one) |
c8f824eb |
1030 | len = 1; |
a6ec74c1 |
1031 | EXTEND(SP, len); |
1032 | EXTEND_MORTAL(len); |
1033 | while (len-- > 0) { |
1034 | Copy(s, &aint, 1, int); |
1035 | s += sizeof(int); |
1036 | sv = NEWSV(40, 0); |
1037 | #ifdef __osf__ |
1038 | /* Without the dummy below unpack("i", pack("i",-1)) |
1039 | * return 0xFFffFFff instead of -1 for Digital Unix V4.0 |
1040 | * cc with optimization turned on. |
1041 | * |
1042 | * The bug was detected in |
1043 | * DEC C V5.8-009 on Digital UNIX V4.0 (Rev. 1091) (V4.0E) |
1044 | * with optimization (-O4) turned on. |
1045 | * DEC C V5.2-040 on Digital UNIX V4.0 (Rev. 564) (V4.0B) |
1046 | * does not have this problem even with -O4. |
1047 | * |
1048 | * This bug was reported as DECC_BUGS 1431 |
1049 | * and tracked internally as GEM_BUGS 7775. |
1050 | * |
1051 | * The bug is fixed in |
1052 | * Tru64 UNIX V5.0: Compaq C V6.1-006 or later |
1053 | * UNIX V4.0F support: DEC C V5.9-006 or later |
1054 | * UNIX V4.0E support: DEC C V5.8-011 or later |
1055 | * and also in DTK. |
1056 | * |
1057 | * See also few lines later for the same bug. |
1058 | */ |
1059 | (aint) ? |
1060 | sv_setiv(sv, (IV)aint) : |
1061 | #endif |
1062 | sv_setiv(sv, (IV)aint); |
1063 | PUSHs(sv_2mortal(sv)); |
1064 | } |
1065 | } |
1066 | break; |
1067 | case 'I': |
49704364 |
1068 | case 'I' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
1069 | along = (strend - s) / sizeof(unsigned int); |
1070 | if (len > along) |
1071 | len = along; |
1072 | if (checksum) { |
1073 | while (len-- > 0) { |
1074 | Copy(s, &auint, 1, unsigned int); |
1075 | s += sizeof(unsigned int); |
fa8ec7c1 |
1076 | if (checksum > bits_in_uv) |
a6ec74c1 |
1077 | cdouble += (NV)auint; |
1078 | else |
92d41999 |
1079 | cuv += auint; |
a6ec74c1 |
1080 | } |
1081 | } |
1082 | else { |
49704364 |
1083 | if (len && unpack_only_one) |
c8f824eb |
1084 | len = 1; |
a6ec74c1 |
1085 | EXTEND(SP, len); |
1086 | EXTEND_MORTAL(len); |
1087 | while (len-- > 0) { |
1088 | Copy(s, &auint, 1, unsigned int); |
1089 | s += sizeof(unsigned int); |
1090 | sv = NEWSV(41, 0); |
1091 | #ifdef __osf__ |
1092 | /* Without the dummy below unpack("I", pack("I",0xFFFFFFFF)) |
1093 | * returns 1.84467440737096e+19 instead of 0xFFFFFFFF. |
1094 | * See details few lines earlier. */ |
1095 | (auint) ? |
1096 | sv_setuv(sv, (UV)auint) : |
1097 | #endif |
1098 | sv_setuv(sv, (UV)auint); |
1099 | PUSHs(sv_2mortal(sv)); |
1100 | } |
1101 | } |
1102 | break; |
92d41999 |
1103 | case 'j': |
1104 | along = (strend - s) / IVSIZE; |
1105 | if (len > along) |
1106 | len = along; |
1107 | if (checksum) { |
1108 | while (len-- > 0) { |
1109 | Copy(s, &aiv, 1, IV); |
1110 | s += IVSIZE; |
1111 | if (checksum > bits_in_uv) |
1112 | cdouble += (NV)aiv; |
1113 | else |
1114 | cuv += aiv; |
1115 | } |
1116 | } |
1117 | else { |
49704364 |
1118 | if (len && unpack_only_one) |
c8f824eb |
1119 | len = 1; |
92d41999 |
1120 | EXTEND(SP, len); |
1121 | EXTEND_MORTAL(len); |
1122 | while (len-- > 0) { |
1123 | Copy(s, &aiv, 1, IV); |
1124 | s += IVSIZE; |
1125 | sv = NEWSV(40, 0); |
1126 | sv_setiv(sv, aiv); |
1127 | PUSHs(sv_2mortal(sv)); |
1128 | } |
1129 | } |
1130 | break; |
1131 | case 'J': |
1132 | along = (strend - s) / UVSIZE; |
1133 | if (len > along) |
1134 | len = along; |
1135 | if (checksum) { |
1136 | while (len-- > 0) { |
1137 | Copy(s, &auv, 1, UV); |
1138 | s += UVSIZE; |
1139 | if (checksum > bits_in_uv) |
1140 | cdouble += (NV)auv; |
1141 | else |
1142 | cuv += auv; |
1143 | } |
1144 | } |
1145 | else { |
49704364 |
1146 | if (len && unpack_only_one) |
c8f824eb |
1147 | len = 1; |
92d41999 |
1148 | EXTEND(SP, len); |
1149 | EXTEND_MORTAL(len); |
1150 | while (len-- > 0) { |
1151 | Copy(s, &auv, 1, UV); |
1152 | s += UVSIZE; |
1153 | sv = NEWSV(41, 0); |
1154 | sv_setuv(sv, auv); |
1155 | PUSHs(sv_2mortal(sv)); |
1156 | } |
1157 | } |
1158 | break; |
49704364 |
1159 | case 'l' | TYPE_IS_SHRIEKING: |
1160 | #if LONGSIZE != SIZE32 |
1161 | along = (strend - s) / sizeof(long); |
a6ec74c1 |
1162 | if (len > along) |
1163 | len = along; |
1164 | if (checksum) { |
49704364 |
1165 | while (len-- > 0) { |
1166 | COPYNN(s, &along, sizeof(long)); |
1167 | s += sizeof(long); |
1168 | if (checksum > bits_in_uv) |
1169 | cdouble += (NV)along; |
1170 | else |
1171 | cuv += along; |
a6ec74c1 |
1172 | } |
49704364 |
1173 | } |
1174 | else { |
1175 | if (len && unpack_only_one) |
1176 | len = 1; |
1177 | EXTEND(SP, len); |
1178 | EXTEND_MORTAL(len); |
1179 | while (len-- > 0) { |
1180 | COPYNN(s, &along, sizeof(long)); |
1181 | s += sizeof(long); |
1182 | sv = NEWSV(42, 0); |
1183 | sv_setiv(sv, (IV)along); |
1184 | PUSHs(sv_2mortal(sv)); |
1185 | } |
1186 | } |
1187 | break; |
1188 | #else |
1189 | /* Fallthrough! */ |
a6ec74c1 |
1190 | #endif |
49704364 |
1191 | case 'l': |
1192 | along = (strend - s) / SIZE32; |
1193 | if (len > along) |
1194 | len = along; |
1195 | if (checksum) { |
1196 | while (len-- > 0) { |
a6ec74c1 |
1197 | #if LONGSIZE > SIZE32 && INTSIZE == SIZE32 |
49704364 |
1198 | I32 along; |
a6ec74c1 |
1199 | #endif |
49704364 |
1200 | COPY32(s, &along); |
a6ec74c1 |
1201 | #if LONGSIZE > SIZE32 |
49704364 |
1202 | if (along > 2147483647) |
1203 | along -= 4294967296; |
a6ec74c1 |
1204 | #endif |
49704364 |
1205 | s += SIZE32; |
1206 | if (checksum > bits_in_uv) |
1207 | cdouble += (NV)along; |
1208 | else |
1209 | cuv += along; |
a6ec74c1 |
1210 | } |
1211 | } |
1212 | else { |
49704364 |
1213 | if (len && unpack_only_one) |
c8f824eb |
1214 | len = 1; |
a6ec74c1 |
1215 | EXTEND(SP, len); |
1216 | EXTEND_MORTAL(len); |
49704364 |
1217 | while (len-- > 0) { |
a6ec74c1 |
1218 | #if LONGSIZE > SIZE32 && INTSIZE == SIZE32 |
49704364 |
1219 | I32 along; |
a6ec74c1 |
1220 | #endif |
49704364 |
1221 | COPY32(s, &along); |
a6ec74c1 |
1222 | #if LONGSIZE > SIZE32 |
49704364 |
1223 | if (along > 2147483647) |
1224 | along -= 4294967296; |
a6ec74c1 |
1225 | #endif |
49704364 |
1226 | s += SIZE32; |
1227 | sv = NEWSV(42, 0); |
1228 | sv_setiv(sv, (IV)along); |
1229 | PUSHs(sv_2mortal(sv)); |
a6ec74c1 |
1230 | } |
1231 | } |
1232 | break; |
49704364 |
1233 | case 'L' | TYPE_IS_SHRIEKING: |
1234 | #if LONGSIZE != SIZE32 |
1235 | along = (strend - s) / sizeof(unsigned long); |
1236 | if (len > along) |
1237 | len = along; |
1238 | if (checksum) { |
1239 | while (len-- > 0) { |
1240 | unsigned long aulong; |
1241 | COPYNN(s, &aulong, sizeof(unsigned long)); |
1242 | s += sizeof(unsigned long); |
1243 | if (checksum > bits_in_uv) |
1244 | cdouble += (NV)aulong; |
1245 | else |
1246 | cuv += aulong; |
1247 | } |
1248 | } |
1249 | else { |
1250 | if (len && unpack_only_one) |
1251 | len = 1; |
1252 | EXTEND(SP, len); |
1253 | EXTEND_MORTAL(len); |
1254 | while (len-- > 0) { |
1255 | unsigned long aulong; |
1256 | COPYNN(s, &aulong, sizeof(unsigned long)); |
1257 | s += sizeof(unsigned long); |
1258 | sv = NEWSV(43, 0); |
1259 | sv_setuv(sv, (UV)aulong); |
1260 | PUSHs(sv_2mortal(sv)); |
1261 | } |
1262 | } |
1263 | break; |
1264 | #else |
1265 | /* Fall through! */ |
1266 | #endif |
a6ec74c1 |
1267 | case 'V': |
1268 | case 'N': |
1269 | case 'L': |
a6ec74c1 |
1270 | along = (strend - s) / SIZE32; |
a6ec74c1 |
1271 | if (len > along) |
1272 | len = along; |
1273 | if (checksum) { |
49704364 |
1274 | while (len-- > 0) { |
1275 | COPY32(s, &aulong); |
1276 | s += SIZE32; |
a6ec74c1 |
1277 | #ifdef HAS_NTOHL |
49704364 |
1278 | if (datumtype == 'N') |
1279 | aulong = PerlSock_ntohl(aulong); |
a6ec74c1 |
1280 | #endif |
1281 | #ifdef HAS_VTOHL |
49704364 |
1282 | if (datumtype == 'V') |
1283 | aulong = vtohl(aulong); |
a6ec74c1 |
1284 | #endif |
49704364 |
1285 | if (checksum > bits_in_uv) |
1286 | cdouble += (NV)aulong; |
1287 | else |
1288 | cuv += aulong; |
a6ec74c1 |
1289 | } |
1290 | } |
1291 | else { |
49704364 |
1292 | if (len && unpack_only_one) |
c8f824eb |
1293 | len = 1; |
a6ec74c1 |
1294 | EXTEND(SP, len); |
1295 | EXTEND_MORTAL(len); |
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 | sv = NEWSV(43, 0); |
1308 | sv_setuv(sv, (UV)aulong); |
1309 | PUSHs(sv_2mortal(sv)); |
a6ec74c1 |
1310 | } |
1311 | } |
1312 | break; |
1313 | case 'p': |
1314 | along = (strend - s) / sizeof(char*); |
1315 | if (len > along) |
1316 | len = along; |
1317 | EXTEND(SP, len); |
1318 | EXTEND_MORTAL(len); |
1319 | while (len-- > 0) { |
1320 | if (sizeof(char*) > strend - s) |
1321 | break; |
1322 | else { |
1323 | Copy(s, &aptr, 1, char*); |
1324 | s += sizeof(char*); |
1325 | } |
1326 | sv = NEWSV(44, 0); |
1327 | if (aptr) |
1328 | sv_setpv(sv, aptr); |
1329 | PUSHs(sv_2mortal(sv)); |
1330 | } |
1331 | break; |
1332 | case 'w': |
49704364 |
1333 | if (len && unpack_only_one) |
c8f824eb |
1334 | len = 1; |
a6ec74c1 |
1335 | EXTEND(SP, len); |
1336 | EXTEND_MORTAL(len); |
1337 | { |
1338 | UV auv = 0; |
1339 | U32 bytes = 0; |
1340 | |
1341 | while ((len > 0) && (s < strend)) { |
1342 | auv = (auv << 7) | (*s & 0x7f); |
1343 | /* UTF8_IS_XXXXX not right here - using constant 0x80 */ |
1344 | if ((U8)(*s++) < 0x80) { |
1345 | bytes = 0; |
1346 | sv = NEWSV(40, 0); |
1347 | sv_setuv(sv, auv); |
1348 | PUSHs(sv_2mortal(sv)); |
1349 | len--; |
1350 | auv = 0; |
1351 | } |
1352 | else if (++bytes >= sizeof(UV)) { /* promote to string */ |
1353 | char *t; |
1354 | STRLEN n_a; |
1355 | |
1356 | sv = Perl_newSVpvf(aTHX_ "%.*"UVf, (int)TYPE_DIGITS(UV), auv); |
1357 | while (s < strend) { |
eb160463 |
1358 | sv = mul128(sv, (U8)(*s & 0x7f)); |
a6ec74c1 |
1359 | if (!(*s++ & 0x80)) { |
1360 | bytes = 0; |
1361 | break; |
1362 | } |
1363 | } |
1364 | t = SvPV(sv, n_a); |
1365 | while (*t == '0') |
1366 | t++; |
1367 | sv_chop(sv, t); |
1368 | PUSHs(sv_2mortal(sv)); |
1369 | len--; |
1370 | auv = 0; |
1371 | } |
1372 | } |
1373 | if ((s >= strend) && bytes) |
49704364 |
1374 | Perl_croak(aTHX_ "Unterminated compressed integer in unpack"); |
a6ec74c1 |
1375 | } |
1376 | break; |
1377 | case 'P': |
49704364 |
1378 | if (symptr->howlen == e_star) |
1379 | Perl_croak(aTHX_ "'P' must have an explicit size in unpack"); |
a6ec74c1 |
1380 | EXTEND(SP, 1); |
1381 | if (sizeof(char*) > strend - s) |
1382 | break; |
1383 | else { |
1384 | Copy(s, &aptr, 1, char*); |
1385 | s += sizeof(char*); |
1386 | } |
1387 | sv = NEWSV(44, 0); |
1388 | if (aptr) |
1389 | sv_setpvn(sv, aptr, len); |
1390 | PUSHs(sv_2mortal(sv)); |
1391 | break; |
1392 | #ifdef HAS_QUAD |
1393 | case 'q': |
1394 | along = (strend - s) / sizeof(Quad_t); |
1395 | if (len > along) |
1396 | len = along; |
fa8ec7c1 |
1397 | if (checksum) { |
1398 | while (len-- > 0) { |
a6ec74c1 |
1399 | Copy(s, &aquad, 1, Quad_t); |
1400 | s += sizeof(Quad_t); |
fa8ec7c1 |
1401 | if (checksum > bits_in_uv) |
1402 | cdouble += (NV)aquad; |
1403 | else |
92d41999 |
1404 | cuv += aquad; |
a6ec74c1 |
1405 | } |
a6ec74c1 |
1406 | } |
fa8ec7c1 |
1407 | else { |
49704364 |
1408 | if (len && unpack_only_one) |
c8f824eb |
1409 | len = 1; |
fa8ec7c1 |
1410 | EXTEND(SP, len); |
1411 | EXTEND_MORTAL(len); |
1412 | while (len-- > 0) { |
1413 | if (s + sizeof(Quad_t) > strend) |
1414 | aquad = 0; |
1415 | else { |
92d41999 |
1416 | Copy(s, &aquad, 1, Quad_t); |
1417 | s += sizeof(Quad_t); |
fa8ec7c1 |
1418 | } |
1419 | sv = NEWSV(42, 0); |
1420 | if (aquad >= IV_MIN && aquad <= IV_MAX) |
92d41999 |
1421 | sv_setiv(sv, (IV)aquad); |
fa8ec7c1 |
1422 | else |
1423 | sv_setnv(sv, (NV)aquad); |
1424 | PUSHs(sv_2mortal(sv)); |
1425 | } |
1426 | } |
a6ec74c1 |
1427 | break; |
1428 | case 'Q': |
206947d2 |
1429 | along = (strend - s) / sizeof(Uquad_t); |
a6ec74c1 |
1430 | if (len > along) |
1431 | len = along; |
fa8ec7c1 |
1432 | if (checksum) { |
1433 | while (len-- > 0) { |
a6ec74c1 |
1434 | Copy(s, &auquad, 1, Uquad_t); |
1435 | s += sizeof(Uquad_t); |
fa8ec7c1 |
1436 | if (checksum > bits_in_uv) |
1437 | cdouble += (NV)auquad; |
1438 | else |
92d41999 |
1439 | cuv += auquad; |
a6ec74c1 |
1440 | } |
a6ec74c1 |
1441 | } |
fa8ec7c1 |
1442 | else { |
49704364 |
1443 | if (len && unpack_only_one) |
c8f824eb |
1444 | len = 1; |
fa8ec7c1 |
1445 | EXTEND(SP, len); |
1446 | EXTEND_MORTAL(len); |
1447 | while (len-- > 0) { |
1448 | if (s + sizeof(Uquad_t) > strend) |
1449 | auquad = 0; |
1450 | else { |
1451 | Copy(s, &auquad, 1, Uquad_t); |
1452 | s += sizeof(Uquad_t); |
1453 | } |
1454 | sv = NEWSV(43, 0); |
1455 | if (auquad <= UV_MAX) |
1456 | sv_setuv(sv, (UV)auquad); |
1457 | else |
1458 | sv_setnv(sv, (NV)auquad); |
1459 | PUSHs(sv_2mortal(sv)); |
1460 | } |
1461 | } |
a6ec74c1 |
1462 | break; |
1463 | #endif |
1464 | /* float and double added gnb@melba.bby.oz.au 22/11/89 */ |
1465 | case 'f': |
a6ec74c1 |
1466 | along = (strend - s) / sizeof(float); |
1467 | if (len > along) |
1468 | len = along; |
1469 | if (checksum) { |
1470 | while (len-- > 0) { |
1471 | Copy(s, &afloat, 1, float); |
1472 | s += sizeof(float); |
1473 | cdouble += afloat; |
1474 | } |
1475 | } |
1476 | else { |
49704364 |
1477 | if (len && unpack_only_one) |
c8f824eb |
1478 | len = 1; |
a6ec74c1 |
1479 | EXTEND(SP, len); |
1480 | EXTEND_MORTAL(len); |
1481 | while (len-- > 0) { |
1482 | Copy(s, &afloat, 1, float); |
1483 | s += sizeof(float); |
1484 | sv = NEWSV(47, 0); |
1485 | sv_setnv(sv, (NV)afloat); |
1486 | PUSHs(sv_2mortal(sv)); |
1487 | } |
1488 | } |
1489 | break; |
1490 | case 'd': |
a6ec74c1 |
1491 | along = (strend - s) / sizeof(double); |
1492 | if (len > along) |
1493 | len = along; |
1494 | if (checksum) { |
1495 | while (len-- > 0) { |
1496 | Copy(s, &adouble, 1, double); |
1497 | s += sizeof(double); |
1498 | cdouble += adouble; |
1499 | } |
1500 | } |
1501 | else { |
49704364 |
1502 | if (len && unpack_only_one) |
c8f824eb |
1503 | len = 1; |
a6ec74c1 |
1504 | EXTEND(SP, len); |
1505 | EXTEND_MORTAL(len); |
1506 | while (len-- > 0) { |
1507 | Copy(s, &adouble, 1, double); |
1508 | s += sizeof(double); |
1509 | sv = NEWSV(48, 0); |
1510 | sv_setnv(sv, (NV)adouble); |
1511 | PUSHs(sv_2mortal(sv)); |
1512 | } |
1513 | } |
1514 | break; |
92d41999 |
1515 | case 'F': |
1516 | along = (strend - s) / NVSIZE; |
1517 | if (len > along) |
1518 | len = along; |
1519 | if (checksum) { |
1520 | while (len-- > 0) { |
1521 | Copy(s, &anv, 1, NV); |
1522 | s += NVSIZE; |
1523 | cdouble += anv; |
1524 | } |
1525 | } |
1526 | else { |
49704364 |
1527 | if (len && unpack_only_one) |
c8f824eb |
1528 | len = 1; |
92d41999 |
1529 | EXTEND(SP, len); |
1530 | EXTEND_MORTAL(len); |
1531 | while (len-- > 0) { |
1532 | Copy(s, &anv, 1, NV); |
1533 | s += NVSIZE; |
1534 | sv = NEWSV(48, 0); |
1535 | sv_setnv(sv, anv); |
1536 | PUSHs(sv_2mortal(sv)); |
1537 | } |
1538 | } |
1539 | break; |
1540 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) |
1541 | case 'D': |
1542 | along = (strend - s) / LONG_DOUBLESIZE; |
1543 | if (len > along) |
1544 | len = along; |
1545 | if (checksum) { |
1546 | while (len-- > 0) { |
1547 | Copy(s, &aldouble, 1, long double); |
1548 | s += LONG_DOUBLESIZE; |
1549 | cdouble += aldouble; |
1550 | } |
1551 | } |
1552 | else { |
49704364 |
1553 | if (len && unpack_only_one) |
c8f824eb |
1554 | len = 1; |
92d41999 |
1555 | EXTEND(SP, len); |
1556 | EXTEND_MORTAL(len); |
1557 | while (len-- > 0) { |
1558 | Copy(s, &aldouble, 1, long double); |
1559 | s += LONG_DOUBLESIZE; |
1560 | sv = NEWSV(48, 0); |
1561 | sv_setnv(sv, (NV)aldouble); |
1562 | PUSHs(sv_2mortal(sv)); |
1563 | } |
1564 | } |
1565 | break; |
1566 | #endif |
a6ec74c1 |
1567 | case 'u': |
1568 | /* MKS: |
1569 | * Initialise the decode mapping. By using a table driven |
1570 | * algorithm, the code will be character-set independent |
1571 | * (and just as fast as doing character arithmetic) |
1572 | */ |
1573 | if (PL_uudmap['M'] == 0) { |
1574 | int i; |
1575 | |
1576 | for (i = 0; i < sizeof(PL_uuemap); i += 1) |
1577 | PL_uudmap[(U8)PL_uuemap[i]] = i; |
1578 | /* |
1579 | * Because ' ' and '`' map to the same value, |
1580 | * we need to decode them both the same. |
1581 | */ |
1582 | PL_uudmap[' '] = 0; |
1583 | } |
1584 | |
1585 | along = (strend - s) * 3 / 4; |
1586 | sv = NEWSV(42, along); |
1587 | if (along) |
1588 | SvPOK_on(sv); |
1589 | while (s < strend && *s > ' ' && ISUUCHAR(*s)) { |
1590 | I32 a, b, c, d; |
1591 | char hunk[4]; |
1592 | |
1593 | hunk[3] = '\0'; |
1594 | len = PL_uudmap[*(U8*)s++] & 077; |
1595 | while (len > 0) { |
1596 | if (s < strend && ISUUCHAR(*s)) |
1597 | a = PL_uudmap[*(U8*)s++] & 077; |
1598 | else |
1599 | a = 0; |
1600 | if (s < strend && ISUUCHAR(*s)) |
1601 | b = PL_uudmap[*(U8*)s++] & 077; |
1602 | else |
1603 | b = 0; |
1604 | if (s < strend && ISUUCHAR(*s)) |
1605 | c = PL_uudmap[*(U8*)s++] & 077; |
1606 | else |
1607 | c = 0; |
1608 | if (s < strend && ISUUCHAR(*s)) |
1609 | d = PL_uudmap[*(U8*)s++] & 077; |
1610 | else |
1611 | d = 0; |
eb160463 |
1612 | hunk[0] = (char)((a << 2) | (b >> 4)); |
1613 | hunk[1] = (char)((b << 4) | (c >> 2)); |
1614 | hunk[2] = (char)((c << 6) | d); |
a6ec74c1 |
1615 | sv_catpvn(sv, hunk, (len > 3) ? 3 : len); |
1616 | len -= 3; |
1617 | } |
1618 | if (*s == '\n') |
1619 | s++; |
92aa5668 |
1620 | else /* possible checksum byte */ |
1621 | if (s + 1 < strend && s[1] == '\n') |
1622 | s += 2; |
a6ec74c1 |
1623 | } |
1624 | XPUSHs(sv_2mortal(sv)); |
1625 | break; |
1626 | } |
49704364 |
1627 | |
a6ec74c1 |
1628 | if (checksum) { |
1629 | sv = NEWSV(42, 0); |
1630 | if (strchr("fFdD", datumtype) || |
92d41999 |
1631 | (checksum > bits_in_uv && |
49704364 |
1632 | strchr("csSiIlLnNUvVqQjJ", datumtype&0xFF)) ) { |
a6ec74c1 |
1633 | NV trouble; |
1634 | |
fa8ec7c1 |
1635 | adouble = (NV) (1 << (checksum & 15)); |
a6ec74c1 |
1636 | while (checksum >= 16) { |
1637 | checksum -= 16; |
1638 | adouble *= 65536.0; |
1639 | } |
a6ec74c1 |
1640 | while (cdouble < 0.0) |
1641 | cdouble += adouble; |
1642 | cdouble = Perl_modf(cdouble / adouble, &trouble) * adouble; |
1643 | sv_setnv(sv, cdouble); |
1644 | } |
1645 | else { |
fa8ec7c1 |
1646 | if (checksum < bits_in_uv) { |
1647 | UV mask = ((UV)1 << checksum) - 1; |
92d41999 |
1648 | cuv &= mask; |
a6ec74c1 |
1649 | } |
92d41999 |
1650 | sv_setuv(sv, cuv); |
a6ec74c1 |
1651 | } |
1652 | XPUSHs(sv_2mortal(sv)); |
1653 | checksum = 0; |
1654 | } |
49704364 |
1655 | |
1656 | if (symptr->flags & FLAG_SLASH){ |
1657 | if (SP - PL_stack_base - start_sp_offset <= 0) |
1658 | Perl_croak(aTHX_ "'/' must follow a numeric type in unpack"); |
1659 | if( next_symbol(symptr) ){ |
1660 | if( symptr->howlen == e_number ) |
1661 | Perl_croak(aTHX_ "Count after length/code in unpack" ); |
1662 | if( beyond ){ |
1663 | /* ...end of char buffer then no decent length available */ |
1664 | Perl_croak(aTHX_ "length/code after end of string in unpack" ); |
1665 | } else { |
1666 | /* take top of stack (hope it's numeric) */ |
1667 | len = POPi; |
1668 | if( len < 0 ) |
1669 | Perl_croak(aTHX_ "Negative '/' count in unpack" ); |
1670 | } |
1671 | } else { |
1672 | Perl_croak(aTHX_ "Code missing after '/' in unpack" ); |
1673 | } |
1674 | datumtype = symptr->code; |
1675 | goto redo_switch; |
1676 | } |
a6ec74c1 |
1677 | } |
49704364 |
1678 | |
18529408 |
1679 | if (new_s) |
1680 | *new_s = s; |
1681 | PUTBACK; |
1682 | return SP - PL_stack_base - start_sp_offset; |
1683 | } |
1684 | |
1685 | PP(pp_unpack) |
1686 | { |
1687 | dSP; |
13dcffc6 |
1688 | SV *right = (MAXARG > 1) ? POPs : GvSV(PL_defgv); |
1689 | SV *left = POPs; |
18529408 |
1690 | I32 gimme = GIMME_V; |
1691 | STRLEN llen; |
1692 | STRLEN rlen; |
1693 | register char *pat = SvPV(left, llen); |
1694 | #ifdef PACKED_IS_OCTETS |
1695 | /* Packed side is assumed to be octets - so force downgrade if it |
1696 | has been UTF-8 encoded by accident |
1697 | */ |
1698 | register char *s = SvPVbyte(right, rlen); |
1699 | #else |
1700 | register char *s = SvPV(right, rlen); |
1701 | #endif |
1702 | char *strend = s + rlen; |
1703 | register char *patend = pat + llen; |
1704 | register I32 cnt; |
1705 | |
1706 | PUTBACK; |
1707 | cnt = unpack_str(pat, patend, s, s, strend, NULL, 0, |
49704364 |
1708 | ((gimme == G_SCALAR) ? FLAG_UNPACK_ONLY_ONE : 0) |
1709 | | (DO_UTF8(right) ? FLAG_UNPACK_DO_UTF8 : 0)); |
1710 | |
18529408 |
1711 | SPAGAIN; |
1712 | if ( !cnt && gimme == G_SCALAR ) |
1713 | PUSHs(&PL_sv_undef); |
a6ec74c1 |
1714 | RETURN; |
1715 | } |
1716 | |
1717 | STATIC void |
1718 | S_doencodes(pTHX_ register SV *sv, register char *s, register I32 len) |
1719 | { |
1720 | char hunk[5]; |
1721 | |
1722 | *hunk = PL_uuemap[len]; |
1723 | sv_catpvn(sv, hunk, 1); |
1724 | hunk[4] = '\0'; |
1725 | while (len > 2) { |
1726 | hunk[0] = PL_uuemap[(077 & (*s >> 2))]; |
1727 | hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((s[1] >> 4) & 017)))]; |
1728 | hunk[2] = PL_uuemap[(077 & (((s[1] << 2) & 074) | ((s[2] >> 6) & 03)))]; |
1729 | hunk[3] = PL_uuemap[(077 & (s[2] & 077))]; |
1730 | sv_catpvn(sv, hunk, 4); |
1731 | s += 3; |
1732 | len -= 3; |
1733 | } |
1734 | if (len > 0) { |
1735 | char r = (len > 1 ? s[1] : '\0'); |
1736 | hunk[0] = PL_uuemap[(077 & (*s >> 2))]; |
1737 | hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((r >> 4) & 017)))]; |
1738 | hunk[2] = PL_uuemap[(077 & ((r << 2) & 074))]; |
1739 | hunk[3] = PL_uuemap[0]; |
1740 | sv_catpvn(sv, hunk, 4); |
1741 | } |
1742 | sv_catpvn(sv, "\n", 1); |
1743 | } |
1744 | |
1745 | STATIC SV * |
1746 | S_is_an_int(pTHX_ char *s, STRLEN l) |
1747 | { |
1748 | STRLEN n_a; |
1749 | SV *result = newSVpvn(s, l); |
1750 | char *result_c = SvPV(result, n_a); /* convenience */ |
1751 | char *out = result_c; |
1752 | bool skip = 1; |
1753 | bool ignore = 0; |
1754 | |
1755 | while (*s) { |
1756 | switch (*s) { |
1757 | case ' ': |
1758 | break; |
1759 | case '+': |
1760 | if (!skip) { |
1761 | SvREFCNT_dec(result); |
1762 | return (NULL); |
1763 | } |
1764 | break; |
1765 | case '0': |
1766 | case '1': |
1767 | case '2': |
1768 | case '3': |
1769 | case '4': |
1770 | case '5': |
1771 | case '6': |
1772 | case '7': |
1773 | case '8': |
1774 | case '9': |
1775 | skip = 0; |
1776 | if (!ignore) { |
1777 | *(out++) = *s; |
1778 | } |
1779 | break; |
1780 | case '.': |
1781 | ignore = 1; |
1782 | break; |
1783 | default: |
1784 | SvREFCNT_dec(result); |
1785 | return (NULL); |
1786 | } |
1787 | s++; |
1788 | } |
1789 | *(out++) = '\0'; |
1790 | SvCUR_set(result, out - result_c); |
1791 | return (result); |
1792 | } |
1793 | |
1794 | /* pnum must be '\0' terminated */ |
1795 | STATIC int |
1796 | S_div128(pTHX_ SV *pnum, bool *done) |
1797 | { |
1798 | STRLEN len; |
1799 | char *s = SvPV(pnum, len); |
1800 | int m = 0; |
1801 | int r = 0; |
1802 | char *t = s; |
1803 | |
1804 | *done = 1; |
1805 | while (*t) { |
1806 | int i; |
1807 | |
1808 | i = m * 10 + (*t - '0'); |
1809 | m = i & 0x7F; |
1810 | r = (i >> 7); /* r < 10 */ |
1811 | if (r) { |
1812 | *done = 0; |
1813 | } |
1814 | *(t++) = '0' + r; |
1815 | } |
1816 | *(t++) = '\0'; |
1817 | SvCUR_set(pnum, (STRLEN) (t - s)); |
1818 | return (m); |
1819 | } |
1820 | |
49704364 |
1821 | |
a6ec74c1 |
1822 | |
18529408 |
1823 | /* |
1824 | =for apidoc pack_cat |
1825 | |
1826 | The engine implementing pack() Perl function. |
1827 | |
1828 | =cut */ |
1829 | |
49704364 |
1830 | |
18529408 |
1831 | void |
1832 | Perl_pack_cat(pTHX_ SV *cat, char *pat, register char *patend, register SV **beglist, SV **endlist, SV ***next_in_list, U32 flags) |
a6ec74c1 |
1833 | { |
49704364 |
1834 | tempsym_t sym = { 0 }; |
1835 | sym.patptr = pat; |
1836 | sym.patend = patend; |
1837 | sym.flags = flags; |
1838 | |
1839 | (void)pack_rec( cat, &sym, beglist, endlist ); |
1840 | } |
1841 | |
1842 | |
1843 | STATIC |
1844 | SV ** |
1845 | S_pack_rec(pTHX_ SV *cat, register tempsym_t* symptr, register SV **beglist, SV **endlist ) |
1846 | { |
a6ec74c1 |
1847 | register I32 items; |
1848 | STRLEN fromlen; |
49704364 |
1849 | register I32 len = 0; |
a6ec74c1 |
1850 | SV *fromstr; |
1851 | /*SUPPRESS 442*/ |
1852 | static char null10[] = {0,0,0,0,0,0,0,0,0,0}; |
1853 | static char *space10 = " "; |
49704364 |
1854 | bool found; |
a6ec74c1 |
1855 | |
1856 | /* These must not be in registers: */ |
1857 | char achar; |
1858 | I16 ashort; |
1859 | int aint; |
1860 | unsigned int auint; |
1861 | I32 along; |
1862 | U32 aulong; |
92d41999 |
1863 | IV aiv; |
1864 | UV auv; |
1865 | NV anv; |
1866 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) |
1867 | long double aldouble; |
1868 | #endif |
a6ec74c1 |
1869 | #ifdef HAS_QUAD |
1870 | Quad_t aquad; |
1871 | Uquad_t auquad; |
1872 | #endif |
1873 | char *aptr; |
1874 | float afloat; |
1875 | double adouble; |
49704364 |
1876 | int strrelbeg = SvCUR(cat); |
1877 | tempsym_t lookahead; |
a6ec74c1 |
1878 | |
18529408 |
1879 | items = endlist - beglist; |
49704364 |
1880 | found = next_symbol( symptr ); |
1881 | |
18529408 |
1882 | #ifndef PACKED_IS_OCTETS |
49704364 |
1883 | if (symptr->level == 0 && found && symptr->code == 'U' ){ |
18529408 |
1884 | SvUTF8_on(cat); |
49704364 |
1885 | } |
18529408 |
1886 | #endif |
49704364 |
1887 | |
1888 | while (found) { |
a6ec74c1 |
1889 | SV *lengthcode = Nullsv; |
18529408 |
1890 | #define NEXTFROM ( lengthcode ? lengthcode : items-- > 0 ? *beglist++ : &PL_sv_no) |
49704364 |
1891 | |
1892 | I32 datumtype = symptr->code; |
1893 | howlen_t howlen; |
1894 | |
1895 | switch( howlen = symptr->howlen ){ |
1896 | case e_no_len: |
1897 | case e_number: |
1898 | len = symptr->length; |
1899 | break; |
1900 | case e_star: |
1901 | len = strchr("@Xxu", datumtype) ? 0 : items; |
1902 | break; |
1903 | } |
1904 | |
1905 | /* Look ahead for next symbol. Do we have code/code? */ |
1906 | lookahead = *symptr; |
1907 | found = next_symbol(&lookahead); |
1908 | if ( symptr->flags & FLAG_SLASH ) { |
1909 | if (found){ |
1910 | if ( 0 == strchr( "aAZ", lookahead.code ) || |
1911 | e_star != lookahead.howlen ) |
1912 | Perl_croak(aTHX_ "'/' must be followed by 'a*', 'A*' or 'Z*' in pack"); |
1913 | lengthcode = sv_2mortal(newSViv(sv_len(items > 0 |
18529408 |
1914 | ? *beglist : &PL_sv_no) |
49704364 |
1915 | + (lookahead.code == 'Z' ? 1 : 0))); |
1916 | } else { |
1917 | Perl_croak(aTHX_ "Code missing after '/' in pack"); |
1918 | } |
a6ec74c1 |
1919 | } |
49704364 |
1920 | |
a6ec74c1 |
1921 | switch(datumtype) { |
1922 | default: |
49704364 |
1923 | Perl_croak(aTHX_ "Invalid type '%c' in pack", (int)datumtype); |
a6ec74c1 |
1924 | case '%': |
49704364 |
1925 | Perl_croak(aTHX_ "'%%' may not be used in pack"); |
a6ec74c1 |
1926 | case '@': |
49704364 |
1927 | len += strrelbeg - SvCUR(cat); |
a6ec74c1 |
1928 | if (len > 0) |
1929 | goto grow; |
1930 | len = -len; |
1931 | if (len > 0) |
1932 | goto shrink; |
1933 | break; |
18529408 |
1934 | case '(': |
1935 | { |
49704364 |
1936 | tempsym_t savsym = *symptr; |
1937 | symptr->patend = savsym.grpend; |
1938 | symptr->level++; |
18529408 |
1939 | while (len--) { |
49704364 |
1940 | symptr->patptr = savsym.grpbeg; |
1941 | beglist = pack_rec(cat, symptr, beglist, endlist ); |
1942 | if (savsym.howlen == e_star && beglist == endlist) |
18529408 |
1943 | break; /* No way to continue */ |
1944 | } |
49704364 |
1945 | lookahead.flags = symptr->flags; |
1946 | *symptr = savsym; |
18529408 |
1947 | break; |
1948 | } |
62f95557 |
1949 | case 'X' | TYPE_IS_SHRIEKING: |
1950 | if (!len) /* Avoid division by 0 */ |
1951 | len = 1; |
1952 | len = (SvCUR(cat)) % len; |
1953 | /* FALL THROUGH */ |
a6ec74c1 |
1954 | case 'X': |
1955 | shrink: |
eb160463 |
1956 | if ((I32)SvCUR(cat) < len) |
49704364 |
1957 | Perl_croak(aTHX_ "'X' outside of string in pack"); |
a6ec74c1 |
1958 | SvCUR(cat) -= len; |
1959 | *SvEND(cat) = '\0'; |
1960 | break; |
62f95557 |
1961 | case 'x' | TYPE_IS_SHRIEKING: |
1962 | if (!len) /* Avoid division by 0 */ |
1963 | len = 1; |
1964 | aint = (SvCUR(cat)) % len; |
1965 | if (aint) /* Other portable ways? */ |
1966 | len = len - aint; |
1967 | else |
1968 | len = 0; |
1969 | /* FALL THROUGH */ |
49704364 |
1970 | |
a6ec74c1 |
1971 | case 'x': |
1972 | grow: |
1973 | while (len >= 10) { |
1974 | sv_catpvn(cat, null10, 10); |
1975 | len -= 10; |
1976 | } |
1977 | sv_catpvn(cat, null10, len); |
1978 | break; |
1979 | case 'A': |
1980 | case 'Z': |
1981 | case 'a': |
1982 | fromstr = NEXTFROM; |
1983 | aptr = SvPV(fromstr, fromlen); |
49704364 |
1984 | if (howlen == e_star) { |
a6ec74c1 |
1985 | len = fromlen; |
1986 | if (datumtype == 'Z') |
1987 | ++len; |
1988 | } |
eb160463 |
1989 | if ((I32)fromlen >= len) { |
a6ec74c1 |
1990 | sv_catpvn(cat, aptr, len); |
1991 | if (datumtype == 'Z') |
1992 | *(SvEND(cat)-1) = '\0'; |
1993 | } |
1994 | else { |
1995 | sv_catpvn(cat, aptr, fromlen); |
1996 | len -= fromlen; |
1997 | if (datumtype == 'A') { |
1998 | while (len >= 10) { |
1999 | sv_catpvn(cat, space10, 10); |
2000 | len -= 10; |
2001 | } |
2002 | sv_catpvn(cat, space10, len); |
2003 | } |
2004 | else { |
2005 | while (len >= 10) { |
2006 | sv_catpvn(cat, null10, 10); |
2007 | len -= 10; |
2008 | } |
2009 | sv_catpvn(cat, null10, len); |
2010 | } |
2011 | } |
2012 | break; |
2013 | case 'B': |
2014 | case 'b': |
2015 | { |
2016 | register char *str; |
2017 | I32 saveitems; |
2018 | |
2019 | fromstr = NEXTFROM; |
2020 | saveitems = items; |
2021 | str = SvPV(fromstr, fromlen); |
49704364 |
2022 | if (howlen == e_star) |
a6ec74c1 |
2023 | len = fromlen; |
2024 | aint = SvCUR(cat); |
2025 | SvCUR(cat) += (len+7)/8; |
2026 | SvGROW(cat, SvCUR(cat) + 1); |
2027 | aptr = SvPVX(cat) + aint; |
eb160463 |
2028 | if (len > (I32)fromlen) |
a6ec74c1 |
2029 | len = fromlen; |
2030 | aint = len; |
2031 | items = 0; |
2032 | if (datumtype == 'B') { |
2033 | for (len = 0; len++ < aint;) { |
2034 | items |= *str++ & 1; |
2035 | if (len & 7) |
2036 | items <<= 1; |
2037 | else { |
2038 | *aptr++ = items & 0xff; |
2039 | items = 0; |
2040 | } |
2041 | } |
2042 | } |
2043 | else { |
2044 | for (len = 0; len++ < aint;) { |
2045 | if (*str++ & 1) |
2046 | items |= 128; |
2047 | if (len & 7) |
2048 | items >>= 1; |
2049 | else { |
2050 | *aptr++ = items & 0xff; |
2051 | items = 0; |
2052 | } |
2053 | } |
2054 | } |
2055 | if (aint & 7) { |
2056 | if (datumtype == 'B') |
2057 | items <<= 7 - (aint & 7); |
2058 | else |
2059 | items >>= 7 - (aint & 7); |
2060 | *aptr++ = items & 0xff; |
2061 | } |
2062 | str = SvPVX(cat) + SvCUR(cat); |
2063 | while (aptr <= str) |
2064 | *aptr++ = '\0'; |
2065 | |
2066 | items = saveitems; |
2067 | } |
2068 | break; |
2069 | case 'H': |
2070 | case 'h': |
2071 | { |
2072 | register char *str; |
2073 | I32 saveitems; |
2074 | |
2075 | fromstr = NEXTFROM; |
2076 | saveitems = items; |
2077 | str = SvPV(fromstr, fromlen); |
49704364 |
2078 | if (howlen == e_star) |
a6ec74c1 |
2079 | len = fromlen; |
2080 | aint = SvCUR(cat); |
2081 | SvCUR(cat) += (len+1)/2; |
2082 | SvGROW(cat, SvCUR(cat) + 1); |
2083 | aptr = SvPVX(cat) + aint; |
eb160463 |
2084 | if (len > (I32)fromlen) |
a6ec74c1 |
2085 | len = fromlen; |
2086 | aint = len; |
2087 | items = 0; |
2088 | if (datumtype == 'H') { |
2089 | for (len = 0; len++ < aint;) { |
2090 | if (isALPHA(*str)) |
2091 | items |= ((*str++ & 15) + 9) & 15; |
2092 | else |
2093 | items |= *str++ & 15; |
2094 | if (len & 1) |
2095 | items <<= 4; |
2096 | else { |
2097 | *aptr++ = items & 0xff; |
2098 | items = 0; |
2099 | } |
2100 | } |
2101 | } |
2102 | else { |
2103 | for (len = 0; len++ < aint;) { |
2104 | if (isALPHA(*str)) |
2105 | items |= (((*str++ & 15) + 9) & 15) << 4; |
2106 | else |
2107 | items |= (*str++ & 15) << 4; |
2108 | if (len & 1) |
2109 | items >>= 4; |
2110 | else { |
2111 | *aptr++ = items & 0xff; |
2112 | items = 0; |
2113 | } |
2114 | } |
2115 | } |
2116 | if (aint & 1) |
2117 | *aptr++ = items & 0xff; |
2118 | str = SvPVX(cat) + SvCUR(cat); |
2119 | while (aptr <= str) |
2120 | *aptr++ = '\0'; |
2121 | |
2122 | items = saveitems; |
2123 | } |
2124 | break; |
2125 | case 'C': |
2126 | case 'c': |
2127 | while (len-- > 0) { |
2128 | fromstr = NEXTFROM; |
2129 | switch (datumtype) { |
2130 | case 'C': |
2131 | aint = SvIV(fromstr); |
2132 | if ((aint < 0 || aint > 255) && |
2133 | ckWARN(WARN_PACK)) |
9014280d |
2134 | Perl_warner(aTHX_ packWARN(WARN_PACK), |
49704364 |
2135 | "Character in 'C' format wrapped in pack"); |
a6ec74c1 |
2136 | achar = aint & 255; |
2137 | sv_catpvn(cat, &achar, sizeof(char)); |
2138 | break; |
2139 | case 'c': |
2140 | aint = SvIV(fromstr); |
2141 | if ((aint < -128 || aint > 127) && |
2142 | ckWARN(WARN_PACK)) |
9014280d |
2143 | Perl_warner(aTHX_ packWARN(WARN_PACK), |
49704364 |
2144 | "Character in 'c' format wrapped in pack" ); |
a6ec74c1 |
2145 | achar = aint & 255; |
2146 | sv_catpvn(cat, &achar, sizeof(char)); |
2147 | break; |
2148 | } |
2149 | } |
2150 | break; |
2151 | case 'U': |
2152 | while (len-- > 0) { |
2153 | fromstr = NEXTFROM; |
e87322b2 |
2154 | auint = UNI_TO_NATIVE(SvUV(fromstr)); |
a6ec74c1 |
2155 | SvGROW(cat, SvCUR(cat) + UTF8_MAXLEN + 1); |
52ea3e69 |
2156 | SvCUR_set(cat, |
2157 | (char*)uvchr_to_utf8_flags((U8*)SvEND(cat), |
2158 | auint, |
2159 | ckWARN(WARN_UTF8) ? |
2160 | 0 : UNICODE_ALLOW_ANY) |
2161 | - SvPVX(cat)); |
a6ec74c1 |
2162 | } |
2163 | *SvEND(cat) = '\0'; |
2164 | break; |
2165 | /* Float and double added by gnb@melba.bby.oz.au 22/11/89 */ |
2166 | case 'f': |
a6ec74c1 |
2167 | while (len-- > 0) { |
2168 | fromstr = NEXTFROM; |
5cdb9e01 |
2169 | #ifdef __VOS__ |
2170 | /* VOS does not automatically map a floating-point overflow |
2171 | during conversion from double to float into infinity, so we |
2172 | do it by hand. This code should either be generalized for |
2173 | any OS that needs it, or removed if and when VOS implements |
2174 | posix-976 (suggestion to support mapping to infinity). |
2175 | Paul.Green@stratus.com 02-04-02. */ |
2176 | if (SvNV(fromstr) > FLT_MAX) |
2177 | afloat = _float_constants[0]; /* single prec. inf. */ |
2178 | else if (SvNV(fromstr) < -FLT_MAX) |
2179 | afloat = _float_constants[0]; /* single prec. inf. */ |
2180 | else afloat = (float)SvNV(fromstr); |
2181 | #else |
baf3cf9c |
2182 | # if defined(VMS) && !defined(__IEEE_FP) |
2183 | /* IEEE fp overflow shenanigans are unavailable on VAX and optional |
2184 | * on Alpha; fake it if we don't have them. |
2185 | */ |
2186 | if (SvNV(fromstr) > FLT_MAX) |
2187 | afloat = FLT_MAX; |
2188 | else if (SvNV(fromstr) < -FLT_MAX) |
2189 | afloat = -FLT_MAX; |
2190 | else afloat = (float)SvNV(fromstr); |
2191 | # else |
a6ec74c1 |
2192 | afloat = (float)SvNV(fromstr); |
baf3cf9c |
2193 | # endif |
5cdb9e01 |
2194 | #endif |
a6ec74c1 |
2195 | sv_catpvn(cat, (char *)&afloat, sizeof (float)); |
2196 | } |
2197 | break; |
2198 | case 'd': |
a6ec74c1 |
2199 | while (len-- > 0) { |
2200 | fromstr = NEXTFROM; |
5cdb9e01 |
2201 | #ifdef __VOS__ |
2202 | /* VOS does not automatically map a floating-point overflow |
2203 | during conversion from long double to double into infinity, |
2204 | so we do it by hand. This code should either be generalized |
2205 | for any OS that needs it, or removed if and when VOS |
2206 | implements posix-976 (suggestion to support mapping to |
2207 | infinity). Paul.Green@stratus.com 02-04-02. */ |
2208 | if (SvNV(fromstr) > DBL_MAX) |
2209 | adouble = _double_constants[0]; /* double prec. inf. */ |
2210 | else if (SvNV(fromstr) < -DBL_MAX) |
2211 | adouble = _double_constants[0]; /* double prec. inf. */ |
2212 | else adouble = (double)SvNV(fromstr); |
2213 | #else |
baf3cf9c |
2214 | # if defined(VMS) && !defined(__IEEE_FP) |
2215 | /* IEEE fp overflow shenanigans are unavailable on VAX and optional |
2216 | * on Alpha; fake it if we don't have them. |
2217 | */ |
2218 | if (SvNV(fromstr) > DBL_MAX) |
2219 | adouble = DBL_MAX; |
2220 | else if (SvNV(fromstr) < -DBL_MAX) |
2221 | adouble = -DBL_MAX; |
2222 | else adouble = (double)SvNV(fromstr); |
2223 | # else |
a6ec74c1 |
2224 | adouble = (double)SvNV(fromstr); |
baf3cf9c |
2225 | # endif |
5cdb9e01 |
2226 | #endif |
a6ec74c1 |
2227 | sv_catpvn(cat, (char *)&adouble, sizeof (double)); |
2228 | } |
2229 | break; |
92d41999 |
2230 | case 'F': |
2231 | while (len-- > 0) { |
2232 | fromstr = NEXTFROM; |
2233 | anv = SvNV(fromstr); |
2234 | sv_catpvn(cat, (char *)&anv, NVSIZE); |
2235 | } |
2236 | break; |
2237 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) |
2238 | case 'D': |
2239 | while (len-- > 0) { |
2240 | fromstr = NEXTFROM; |
2241 | aldouble = (long double)SvNV(fromstr); |
2242 | sv_catpvn(cat, (char *)&aldouble, LONG_DOUBLESIZE); |
2243 | } |
2244 | break; |
2245 | #endif |
a6ec74c1 |
2246 | case 'n': |
2247 | while (len-- > 0) { |
2248 | fromstr = NEXTFROM; |
2249 | ashort = (I16)SvIV(fromstr); |
2250 | #ifdef HAS_HTONS |
2251 | ashort = PerlSock_htons(ashort); |
2252 | #endif |
2253 | CAT16(cat, &ashort); |
2254 | } |
2255 | break; |
2256 | case 'v': |
2257 | while (len-- > 0) { |
2258 | fromstr = NEXTFROM; |
2259 | ashort = (I16)SvIV(fromstr); |
2260 | #ifdef HAS_HTOVS |
2261 | ashort = htovs(ashort); |
2262 | #endif |
2263 | CAT16(cat, &ashort); |
2264 | } |
2265 | break; |
49704364 |
2266 | case 'S' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2267 | #if SHORTSIZE != SIZE16 |
49704364 |
2268 | { |
a6ec74c1 |
2269 | unsigned short aushort; |
2270 | |
2271 | while (len-- > 0) { |
2272 | fromstr = NEXTFROM; |
2273 | aushort = SvUV(fromstr); |
2274 | sv_catpvn(cat, (char *)&aushort, sizeof(unsigned short)); |
2275 | } |
49704364 |
2276 | } |
2277 | break; |
2278 | #else |
2279 | /* Fall through! */ |
a6ec74c1 |
2280 | #endif |
49704364 |
2281 | case 'S': |
a6ec74c1 |
2282 | { |
2283 | U16 aushort; |
2284 | |
2285 | while (len-- > 0) { |
2286 | fromstr = NEXTFROM; |
2287 | aushort = (U16)SvUV(fromstr); |
2288 | CAT16(cat, &aushort); |
2289 | } |
2290 | |
2291 | } |
2292 | break; |
49704364 |
2293 | case 's' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2294 | #if SHORTSIZE != SIZE16 |
49704364 |
2295 | { |
a6ec74c1 |
2296 | short ashort; |
2297 | |
2298 | while (len-- > 0) { |
2299 | fromstr = NEXTFROM; |
2300 | ashort = SvIV(fromstr); |
2301 | sv_catpvn(cat, (char *)&ashort, sizeof(short)); |
2302 | } |
2303 | } |
49704364 |
2304 | break; |
2305 | #else |
2306 | /* Fall through! */ |
a6ec74c1 |
2307 | #endif |
49704364 |
2308 | case 's': |
2309 | while (len-- > 0) { |
2310 | fromstr = NEXTFROM; |
2311 | ashort = (I16)SvIV(fromstr); |
2312 | CAT16(cat, &ashort); |
a6ec74c1 |
2313 | } |
2314 | break; |
2315 | case 'I': |
49704364 |
2316 | case 'I' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2317 | while (len-- > 0) { |
2318 | fromstr = NEXTFROM; |
2319 | auint = SvUV(fromstr); |
2320 | sv_catpvn(cat, (char*)&auint, sizeof(unsigned int)); |
2321 | } |
2322 | break; |
92d41999 |
2323 | case 'j': |
2324 | while (len-- > 0) { |
2325 | fromstr = NEXTFROM; |
2326 | aiv = SvIV(fromstr); |
2327 | sv_catpvn(cat, (char*)&aiv, IVSIZE); |
2328 | } |
2329 | break; |
2330 | case 'J': |
2331 | while (len-- > 0) { |
2332 | fromstr = NEXTFROM; |
2333 | auv = SvUV(fromstr); |
2334 | sv_catpvn(cat, (char*)&auv, UVSIZE); |
2335 | } |
2336 | break; |
a6ec74c1 |
2337 | case 'w': |
2338 | while (len-- > 0) { |
2339 | fromstr = NEXTFROM; |
15e9f109 |
2340 | anv = SvNV(fromstr); |
a6ec74c1 |
2341 | |
15e9f109 |
2342 | if (anv < 0) |
49704364 |
2343 | Perl_croak(aTHX_ "Cannot compress negative numbers in pack"); |
a6ec74c1 |
2344 | |
196b62db |
2345 | /* 0xFFFFFFFFFFFFFFFF may cast to 18446744073709551616.0, |
2346 | which is == UV_MAX_P1. IOK is fine (instead of UV_only), as |
2347 | any negative IVs will have already been got by the croak() |
2348 | above. IOK is untrue for fractions, so we test them |
2349 | against UV_MAX_P1. */ |
15e9f109 |
2350 | if (SvIOK(fromstr) || anv < UV_MAX_P1) |
a6ec74c1 |
2351 | { |
7c1b502b |
2352 | char buf[(sizeof(UV)*8)/7+1]; |
a6ec74c1 |
2353 | char *in = buf + sizeof(buf); |
196b62db |
2354 | UV auv = SvUV(fromstr); |
a6ec74c1 |
2355 | |
2356 | do { |
eb160463 |
2357 | *--in = (char)((auv & 0x7f) | 0x80); |
a6ec74c1 |
2358 | auv >>= 7; |
2359 | } while (auv); |
2360 | buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */ |
2361 | sv_catpvn(cat, in, (buf + sizeof(buf)) - in); |
2362 | } |
2363 | else if (SvPOKp(fromstr)) { /* decimal string arithmetics */ |
2364 | char *from, *result, *in; |
2365 | SV *norm; |
2366 | STRLEN len; |
2367 | bool done; |
2368 | |
2369 | /* Copy string and check for compliance */ |
2370 | from = SvPV(fromstr, len); |
2371 | if ((norm = is_an_int(from, len)) == NULL) |
49704364 |
2372 | Perl_croak(aTHX_ "Can only compress unsigned integers in pack"); |
a6ec74c1 |
2373 | |
2374 | New('w', result, len, char); |
2375 | in = result + len; |
2376 | done = FALSE; |
2377 | while (!done) |
2378 | *--in = div128(norm, &done) | 0x80; |
2379 | result[len - 1] &= 0x7F; /* clear continue bit */ |
2380 | sv_catpvn(cat, in, (result + len) - in); |
2381 | Safefree(result); |
2382 | SvREFCNT_dec(norm); /* free norm */ |
2383 | } |
2384 | else if (SvNOKp(fromstr)) { |
0258719b |
2385 | /* 10**NV_MAX_10_EXP is the largest power of 10 |
2386 | so 10**(NV_MAX_10_EXP+1) is definately unrepresentable |
2387 | given 10**(NV_MAX_10_EXP+1) == 128 ** x solve for x: |
2388 | x = (NV_MAX_10_EXP+1) * log (10) / log (128) |
2389 | And with that many bytes only Inf can overflow. |
2390 | */ |
2391 | #ifdef NV_MAX_10_EXP |
2392 | char buf[1 + (int)((NV_MAX_10_EXP + 1) * 0.47456)]; |
2393 | #else |
2394 | char buf[1 + (int)((308 + 1) * 0.47456)]; |
2395 | #endif |
a6ec74c1 |
2396 | char *in = buf + sizeof(buf); |
2397 | |
15e9f109 |
2398 | anv = Perl_floor(anv); |
a6ec74c1 |
2399 | do { |
15e9f109 |
2400 | NV next = Perl_floor(anv / 128); |
a6ec74c1 |
2401 | if (in <= buf) /* this cannot happen ;-) */ |
49704364 |
2402 | Perl_croak(aTHX_ "Cannot compress integer in pack"); |
0258719b |
2403 | *--in = (unsigned char)(anv - (next * 128)) | 0x80; |
15e9f109 |
2404 | anv = next; |
2405 | } while (anv > 0); |
a6ec74c1 |
2406 | buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */ |
2407 | sv_catpvn(cat, in, (buf + sizeof(buf)) - in); |
2408 | } |
735b914b |
2409 | else { |
2410 | char *from, *result, *in; |
2411 | SV *norm; |
2412 | STRLEN len; |
2413 | bool done; |
2414 | |
2415 | /* Copy string and check for compliance */ |
2416 | from = SvPV(fromstr, len); |
2417 | if ((norm = is_an_int(from, len)) == NULL) |
49704364 |
2418 | Perl_croak(aTHX_ "Can only compress unsigned integers in pack"); |
735b914b |
2419 | |
2420 | New('w', result, len, char); |
2421 | in = result + len; |
2422 | done = FALSE; |
2423 | while (!done) |
2424 | *--in = div128(norm, &done) | 0x80; |
2425 | result[len - 1] &= 0x7F; /* clear continue bit */ |
2426 | sv_catpvn(cat, in, (result + len) - in); |
2427 | Safefree(result); |
2428 | SvREFCNT_dec(norm); /* free norm */ |
2429 | } |
a6ec74c1 |
2430 | } |
2431 | break; |
2432 | case 'i': |
49704364 |
2433 | case 'i' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2434 | while (len-- > 0) { |
2435 | fromstr = NEXTFROM; |
2436 | aint = SvIV(fromstr); |
2437 | sv_catpvn(cat, (char*)&aint, sizeof(int)); |
2438 | } |
2439 | break; |
2440 | case 'N': |
2441 | while (len-- > 0) { |
2442 | fromstr = NEXTFROM; |
2443 | aulong = SvUV(fromstr); |
2444 | #ifdef HAS_HTONL |
2445 | aulong = PerlSock_htonl(aulong); |
2446 | #endif |
2447 | CAT32(cat, &aulong); |
2448 | } |
2449 | break; |
2450 | case 'V': |
2451 | while (len-- > 0) { |
2452 | fromstr = NEXTFROM; |
2453 | aulong = SvUV(fromstr); |
2454 | #ifdef HAS_HTOVL |
2455 | aulong = htovl(aulong); |
2456 | #endif |
2457 | CAT32(cat, &aulong); |
2458 | } |
2459 | break; |
49704364 |
2460 | case 'L' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2461 | #if LONGSIZE != SIZE32 |
49704364 |
2462 | { |
a6ec74c1 |
2463 | unsigned long aulong; |
2464 | |
2465 | while (len-- > 0) { |
2466 | fromstr = NEXTFROM; |
2467 | aulong = SvUV(fromstr); |
2468 | sv_catpvn(cat, (char *)&aulong, sizeof(unsigned long)); |
2469 | } |
2470 | } |
49704364 |
2471 | break; |
2472 | #else |
2473 | /* Fall though! */ |
a6ec74c1 |
2474 | #endif |
49704364 |
2475 | case 'L': |
a6ec74c1 |
2476 | { |
2477 | while (len-- > 0) { |
2478 | fromstr = NEXTFROM; |
2479 | aulong = SvUV(fromstr); |
2480 | CAT32(cat, &aulong); |
2481 | } |
2482 | } |
2483 | break; |
49704364 |
2484 | case 'l' | TYPE_IS_SHRIEKING: |
a6ec74c1 |
2485 | #if LONGSIZE != SIZE32 |
49704364 |
2486 | { |
a6ec74c1 |
2487 | long along; |
2488 | |
2489 | while (len-- > 0) { |
2490 | fromstr = NEXTFROM; |
2491 | along = SvIV(fromstr); |
2492 | sv_catpvn(cat, (char *)&along, sizeof(long)); |
2493 | } |
2494 | } |
49704364 |
2495 | break; |
2496 | #else |
2497 | /* Fall though! */ |
a6ec74c1 |
2498 | #endif |
49704364 |
2499 | case 'l': |
2500 | while (len-- > 0) { |
2501 | fromstr = NEXTFROM; |
2502 | along = SvIV(fromstr); |
2503 | CAT32(cat, &along); |
a6ec74c1 |
2504 | } |
2505 | break; |
2506 | #ifdef HAS_QUAD |
2507 | case 'Q': |
2508 | while (len-- > 0) { |
2509 | fromstr = NEXTFROM; |
2510 | auquad = (Uquad_t)SvUV(fromstr); |
2511 | sv_catpvn(cat, (char*)&auquad, sizeof(Uquad_t)); |
2512 | } |
2513 | break; |
2514 | case 'q': |
2515 | while (len-- > 0) { |
2516 | fromstr = NEXTFROM; |
2517 | aquad = (Quad_t)SvIV(fromstr); |
2518 | sv_catpvn(cat, (char*)&aquad, sizeof(Quad_t)); |
2519 | } |
2520 | break; |
2521 | #endif |
2522 | case 'P': |
2523 | len = 1; /* assume SV is correct length */ |
49704364 |
2524 | /* Fall through! */ |
a6ec74c1 |
2525 | case 'p': |
2526 | while (len-- > 0) { |
2527 | fromstr = NEXTFROM; |
2528 | if (fromstr == &PL_sv_undef) |
2529 | aptr = NULL; |
2530 | else { |
2531 | STRLEN n_a; |
2532 | /* XXX better yet, could spirit away the string to |
2533 | * a safe spot and hang on to it until the result |
2534 | * of pack() (and all copies of the result) are |
2535 | * gone. |
2536 | */ |
2537 | if (ckWARN(WARN_PACK) && (SvTEMP(fromstr) |
2538 | || (SvPADTMP(fromstr) |
2539 | && !SvREADONLY(fromstr)))) |
2540 | { |
9014280d |
2541 | Perl_warner(aTHX_ packWARN(WARN_PACK), |
a6ec74c1 |
2542 | "Attempt to pack pointer to temporary value"); |
2543 | } |
2544 | if (SvPOK(fromstr) || SvNIOK(fromstr)) |
2545 | aptr = SvPV(fromstr,n_a); |
2546 | else |
2547 | aptr = SvPV_force(fromstr,n_a); |
2548 | } |
2549 | sv_catpvn(cat, (char*)&aptr, sizeof(char*)); |
2550 | } |
2551 | break; |
2552 | case 'u': |
2553 | fromstr = NEXTFROM; |
2554 | aptr = SvPV(fromstr, fromlen); |
2555 | SvGROW(cat, fromlen * 4 / 3); |
19c9db5e |
2556 | if (len <= 2) |
a6ec74c1 |
2557 | len = 45; |
2558 | else |
2559 | len = len / 3 * 3; |
2560 | while (fromlen > 0) { |
2561 | I32 todo; |
2562 | |
eb160463 |
2563 | if ((I32)fromlen > len) |
a6ec74c1 |
2564 | todo = len; |
2565 | else |
2566 | todo = fromlen; |
2567 | doencodes(cat, aptr, todo); |
2568 | fromlen -= todo; |
2569 | aptr += todo; |
2570 | } |
2571 | break; |
2572 | } |
49704364 |
2573 | *symptr = lookahead; |
a6ec74c1 |
2574 | } |
49704364 |
2575 | return beglist; |
18529408 |
2576 | } |
2577 | #undef NEXTFROM |
2578 | |
2579 | |
2580 | PP(pp_pack) |
2581 | { |
2582 | dSP; dMARK; dORIGMARK; dTARGET; |
2583 | register SV *cat = TARG; |
2584 | STRLEN fromlen; |
2585 | register char *pat = SvPVx(*++MARK, fromlen); |
2586 | register char *patend = pat + fromlen; |
2587 | |
2588 | MARK++; |
2589 | sv_setpvn(cat, "", 0); |
2590 | |
49704364 |
2591 | pack_cat(cat, pat, patend, MARK, SP + 1, NULL, FLAG_PACK); |
18529408 |
2592 | |
a6ec74c1 |
2593 | SvSETMAGIC(cat); |
2594 | SP = ORIGMARK; |
2595 | PUSHs(cat); |
2596 | RETURN; |
2597 | } |
a6ec74c1 |
2598 | |