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a6ec74c1 JH |
1 | /* pp_pack.c |
2 | * | |
be3c0a43 | 3 | * Copyright (c) 1991-2002, Larry Wall |
a6ec74c1 JH |
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 AT |
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 JH |
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 | ||
86 | STATIC SV * | |
87 | S_mul128(pTHX_ SV *sv, U8 m) | |
88 | { | |
89 | STRLEN len; | |
90 | char *s = SvPV(sv, len); | |
91 | char *t; | |
92 | U32 i = 0; | |
93 | ||
94 | if (!strnEQ(s, "0000", 4)) { /* need to grow sv */ | |
95 | SV *tmpNew = newSVpvn("0000000000", 10); | |
96 | ||
97 | sv_catsv(tmpNew, sv); | |
98 | SvREFCNT_dec(sv); /* free old sv */ | |
99 | sv = tmpNew; | |
100 | s = SvPV(sv, len); | |
101 | } | |
102 | t = s + len - 1; | |
103 | while (!*t) /* trailing '\0'? */ | |
104 | t--; | |
105 | while (t > s) { | |
106 | i = ((*t - '0') << 7) + m; | |
eb160463 GS |
107 | *(t--) = '0' + (char)(i % 10); |
108 | m = (char)(i / 10); | |
a6ec74c1 JH |
109 | } |
110 | return (sv); | |
111 | } | |
112 | ||
113 | /* Explosives and implosives. */ | |
114 | ||
115 | #if 'I' == 73 && 'J' == 74 | |
116 | /* On an ASCII/ISO kind of system */ | |
117 | #define ISUUCHAR(ch) ((ch) >= ' ' && (ch) < 'a') | |
118 | #else | |
119 | /* | |
120 | Some other sort of character set - use memchr() so we don't match | |
121 | the null byte. | |
122 | */ | |
123 | #define ISUUCHAR(ch) (memchr(PL_uuemap, (ch), sizeof(PL_uuemap)-1) || (ch) == ' ') | |
124 | #endif | |
125 | ||
18529408 IZ |
126 | #define UNPACK_ONLY_ONE 0x1 |
127 | #define UNPACK_DO_UTF8 0x2 | |
a6ec74c1 | 128 | |
18529408 IZ |
129 | STATIC char * |
130 | S_group_end(pTHX_ register char *pat, register char *patend, char ender) | |
131 | { | |
132 | while (pat < patend) { | |
133 | char c = *pat++; | |
134 | ||
135 | if (isSPACE(c)) | |
136 | continue; | |
137 | else if (c == ender) | |
138 | return --pat; | |
139 | else if (c == '#') { | |
140 | while (pat < patend && *pat != '\n') | |
141 | pat++; | |
142 | continue; | |
143 | } else if (c == '(') | |
144 | pat = group_end(pat, patend, ')') + 1; | |
206947d2 IZ |
145 | else if (c == '[') |
146 | pat = group_end(pat, patend, ']') + 1; | |
18529408 | 147 | } |
518eff30 | 148 | Perl_croak(aTHX_ "No group ending character `%c' found", ender); |
cb65cf36 | 149 | return 0; |
18529408 IZ |
150 | } |
151 | ||
62f95557 IZ |
152 | #define TYPE_IS_SHRIEKING 0x100 |
153 | ||
206947d2 | 154 | /* Returns the sizeof() struct described by pat */ |
028d1f6d | 155 | STATIC I32 |
206947d2 IZ |
156 | S_measure_struct(pTHX_ char *pat, register char *patend) |
157 | { | |
158 | I32 datumtype; | |
159 | register I32 len; | |
160 | register I32 total = 0; | |
161 | int commas = 0; | |
162 | int star; /* 1 if count is *, -1 if no count given, -2 for / */ | |
163 | #ifdef PERL_NATINT_PACK | |
164 | int natint; /* native integer */ | |
165 | int unatint; /* unsigned native integer */ | |
166 | #endif | |
167 | char buf[2]; | |
168 | register int size; | |
169 | ||
170 | while ((pat = next_symbol(pat, patend)) < patend) { | |
171 | datumtype = *pat++ & 0xFF; | |
172 | #ifdef PERL_NATINT_PACK | |
173 | natint = 0; | |
174 | #endif | |
175 | if (*pat == '!') { | |
62f95557 | 176 | static const char *natstr = "sSiIlLxX"; |
206947d2 IZ |
177 | |
178 | if (strchr(natstr, datumtype)) { | |
62f95557 IZ |
179 | if (datumtype == 'x' || datumtype == 'X') { |
180 | datumtype |= TYPE_IS_SHRIEKING; | |
181 | } else { /* XXXX Should be redone similarly! */ | |
206947d2 | 182 | #ifdef PERL_NATINT_PACK |
62f95557 | 183 | natint = 1; |
206947d2 | 184 | #endif |
62f95557 | 185 | } |
206947d2 IZ |
186 | pat++; |
187 | } | |
188 | else | |
518eff30 | 189 | Perl_croak(aTHX_ "'!' allowed only after types %s", natstr); |
206947d2 IZ |
190 | } |
191 | len = find_count(&pat, patend, &star); | |
192 | if (star > 0) /* */ | |
518eff30 | 193 | Perl_croak(aTHX_ "%s not allowed in length fields", "count *"); |
206947d2 IZ |
194 | else if (star < 0) /* No explicit len */ |
195 | len = datumtype != '@'; | |
196 | ||
197 | switch(datumtype) { | |
198 | default: | |
518eff30 | 199 | Perl_croak(aTHX_ "Invalid type in unpack: '%c'", (int)datumtype); |
206947d2 IZ |
200 | case '@': |
201 | case '/': | |
202 | case 'U': /* XXXX Is it correct? */ | |
203 | case 'w': | |
204 | case 'u': | |
eb160463 | 205 | buf[0] = (char)datumtype; |
206947d2 | 206 | buf[1] = 0; |
518eff30 | 207 | Perl_croak(aTHX_ "%s not allowed in length fields", buf); |
206947d2 IZ |
208 | case ',': /* grandfather in commas but with a warning */ |
209 | if (commas++ == 0 && ckWARN(WARN_UNPACK)) | |
9014280d | 210 | Perl_warner(aTHX_ packWARN(WARN_UNPACK), |
206947d2 IZ |
211 | "Invalid type in unpack: '%c'", (int)datumtype); |
212 | /* FALL THROUGH */ | |
213 | case '%': | |
214 | size = 0; | |
215 | break; | |
216 | case '(': | |
217 | { | |
218 | char *beg = pat, *end; | |
219 | ||
220 | if (star >= 0) | |
518eff30 | 221 | Perl_croak(aTHX_ "()-group starts with a count"); |
206947d2 IZ |
222 | end = group_end(beg, patend, ')'); |
223 | pat = end + 1; | |
224 | len = find_count(&pat, patend, &star); | |
225 | if (star < 0) /* No count */ | |
226 | len = 1; | |
227 | else if (star > 0) /* Star */ | |
518eff30 | 228 | Perl_croak(aTHX_ "%s not allowed in length fields", "count *"); |
62f95557 IZ |
229 | /* XXXX Theoretically, we need to measure many times at different |
230 | positions, since the subexpression may contain | |
231 | alignment commands, but be not of aligned length. | |
232 | Need to detect this and croak(). */ | |
206947d2 IZ |
233 | size = measure_struct(beg, end); |
234 | break; | |
235 | } | |
62f95557 IZ |
236 | case 'X' | TYPE_IS_SHRIEKING: |
237 | /* XXXX Is this useful? Then need to treat MEASURE_BACKWARDS. */ | |
238 | if (!len) /* Avoid division by 0 */ | |
239 | len = 1; | |
240 | len = total % len; /* Assumed: the start is aligned. */ | |
241 | /* FALL THROUGH */ | |
206947d2 IZ |
242 | case 'X': |
243 | size = -1; | |
244 | if (total < len) | |
518eff30 | 245 | Perl_croak(aTHX_ "X outside of string"); |
206947d2 | 246 | break; |
62f95557 IZ |
247 | case 'x' | TYPE_IS_SHRIEKING: |
248 | if (!len) /* Avoid division by 0 */ | |
249 | len = 1; | |
250 | star = total % len; /* Assumed: the start is aligned. */ | |
251 | if (star) /* Other portable ways? */ | |
252 | len = len - star; | |
253 | else | |
254 | len = 0; | |
255 | /* FALL THROUGH */ | |
206947d2 IZ |
256 | case 'x': |
257 | case 'A': | |
258 | case 'Z': | |
259 | case 'a': | |
260 | case 'c': | |
261 | case 'C': | |
262 | size = 1; | |
263 | break; | |
264 | case 'B': | |
265 | case 'b': | |
266 | len = (len + 7)/8; | |
267 | size = 1; | |
268 | break; | |
269 | case 'H': | |
270 | case 'h': | |
271 | len = (len + 1)/2; | |
272 | size = 1; | |
273 | break; | |
274 | case 's': | |
275 | #if SHORTSIZE == SIZE16 | |
276 | size = SIZE16; | |
277 | #else | |
278 | size = (natint ? sizeof(short) : SIZE16); | |
279 | #endif | |
280 | break; | |
281 | case 'v': | |
282 | case 'n': | |
283 | case 'S': | |
284 | #if SHORTSIZE == SIZE16 | |
285 | size = SIZE16; | |
286 | #else | |
287 | unatint = natint && datumtype == 'S'; | |
288 | size = (unatint ? sizeof(unsigned short) : SIZE16); | |
289 | #endif | |
290 | break; | |
291 | case 'i': | |
292 | size = sizeof(int); | |
293 | break; | |
294 | case 'I': | |
295 | size = sizeof(unsigned int); | |
296 | break; | |
92d41999 JH |
297 | case 'j': |
298 | size = IVSIZE; | |
299 | break; | |
300 | case 'J': | |
301 | size = UVSIZE; | |
302 | break; | |
206947d2 IZ |
303 | case 'l': |
304 | #if LONGSIZE == SIZE32 | |
305 | size = SIZE32; | |
306 | #else | |
307 | size = (natint ? sizeof(long) : SIZE32); | |
308 | #endif | |
309 | break; | |
310 | case 'V': | |
311 | case 'N': | |
312 | case 'L': | |
313 | #if LONGSIZE == SIZE32 | |
314 | size = SIZE32; | |
315 | #else | |
316 | unatint = natint && datumtype == 'L'; | |
317 | size = (unatint ? sizeof(unsigned long) : SIZE32); | |
318 | #endif | |
319 | break; | |
320 | case 'P': | |
321 | len = 1; | |
322 | /* FALL THROUGH */ | |
323 | case 'p': | |
324 | size = sizeof(char*); | |
325 | break; | |
326 | #ifdef HAS_QUAD | |
327 | case 'q': | |
328 | size = sizeof(Quad_t); | |
329 | break; | |
330 | case 'Q': | |
331 | size = sizeof(Uquad_t); | |
332 | break; | |
333 | #endif | |
334 | case 'f': | |
206947d2 IZ |
335 | size = sizeof(float); |
336 | break; | |
337 | case 'd': | |
206947d2 IZ |
338 | size = sizeof(double); |
339 | break; | |
92d41999 JH |
340 | case 'F': |
341 | size = NVSIZE; | |
342 | break; | |
343 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) | |
344 | case 'D': | |
345 | size = LONG_DOUBLESIZE; | |
346 | break; | |
347 | #endif | |
206947d2 IZ |
348 | } |
349 | total += len * size; | |
350 | } | |
351 | return total; | |
352 | } | |
353 | ||
18529408 IZ |
354 | /* Returns -1 on no count or on star */ |
355 | STATIC I32 | |
356 | S_find_count(pTHX_ char **ppat, register char *patend, int *star) | |
357 | { | |
62f95557 | 358 | char *pat = *ppat; |
18529408 IZ |
359 | I32 len; |
360 | ||
361 | *star = 0; | |
362 | if (pat >= patend) | |
363 | len = 1; | |
364 | else if (*pat == '*') { | |
365 | pat++; | |
366 | *star = 1; | |
367 | len = -1; | |
368 | } | |
62f95557 IZ |
369 | else if (isDIGIT(*pat)) { |
370 | len = *pat++ - '0'; | |
18529408 IZ |
371 | while (isDIGIT(*pat)) { |
372 | len = (len * 10) + (*pat++ - '0'); | |
62f95557 IZ |
373 | if (len < 0) /* 50% chance of catching... */ |
374 | Perl_croak(aTHX_ "Repeat count in pack/unpack overflows"); | |
18529408 | 375 | } |
62f95557 IZ |
376 | } |
377 | else if (*pat == '[') { | |
378 | char *end = group_end(++pat, patend, ']'); | |
379 | ||
380 | len = 0; | |
381 | *ppat = end + 1; | |
382 | if (isDIGIT(*pat)) | |
383 | return find_count(&pat, end, star); | |
384 | return measure_struct(pat, end); | |
18529408 IZ |
385 | } |
386 | else | |
387 | len = *star = -1; | |
388 | *ppat = pat; | |
389 | return len; | |
390 | } | |
391 | ||
392 | STATIC char * | |
393 | S_next_symbol(pTHX_ register char *pat, register char *patend) | |
394 | { | |
395 | while (pat < patend) { | |
396 | if (isSPACE(*pat)) | |
397 | pat++; | |
398 | else if (*pat == '#') { | |
399 | pat++; | |
400 | while (pat < patend && *pat != '\n') | |
401 | pat++; | |
402 | if (pat < patend) | |
403 | pat++; | |
404 | } | |
405 | else | |
406 | return pat; | |
407 | } | |
408 | return pat; | |
409 | } | |
410 | ||
18529408 IZ |
411 | /* |
412 | =for apidoc unpack_str | |
413 | ||
414 | The engine implementing unpack() Perl function. | |
415 | ||
416 | =cut */ | |
417 | ||
418 | I32 | |
419 | Perl_unpack_str(pTHX_ char *pat, register char *patend, register char *s, char *strbeg, char *strend, char **new_s, I32 ocnt, U32 flags) | |
a6ec74c1 JH |
420 | { |
421 | dSP; | |
a6ec74c1 JH |
422 | I32 datumtype; |
423 | register I32 len; | |
424 | register I32 bits = 0; | |
425 | register char *str; | |
18529408 IZ |
426 | SV *sv; |
427 | I32 start_sp_offset = SP - PL_stack_base; | |
a6ec74c1 JH |
428 | |
429 | /* These must not be in registers: */ | |
430 | short ashort; | |
431 | int aint; | |
432 | long along; | |
433 | #ifdef HAS_QUAD | |
434 | Quad_t aquad; | |
435 | #endif | |
436 | U16 aushort; | |
437 | unsigned int auint; | |
438 | U32 aulong; | |
439 | #ifdef HAS_QUAD | |
440 | Uquad_t auquad; | |
441 | #endif | |
442 | char *aptr; | |
443 | float afloat; | |
444 | double adouble; | |
445 | I32 checksum = 0; | |
92d41999 | 446 | UV cuv = 0; |
a6ec74c1 | 447 | NV cdouble = 0.0; |
92d41999 | 448 | const int bits_in_uv = 8 * sizeof(cuv); |
a6ec74c1 | 449 | int commas = 0; |
18529408 | 450 | int star; /* 1 if count is *, -1 if no count given, -2 for / */ |
a6ec74c1 JH |
451 | #ifdef PERL_NATINT_PACK |
452 | int natint; /* native integer */ | |
453 | int unatint; /* unsigned native integer */ | |
454 | #endif | |
92d41999 JH |
455 | IV aiv; |
456 | UV auv; | |
457 | NV anv; | |
458 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) | |
459 | long double aldouble; | |
460 | #endif | |
eb160463 | 461 | bool do_utf8 = (flags & UNPACK_DO_UTF8) != 0; |
a6ec74c1 | 462 | |
18529408 | 463 | while ((pat = next_symbol(pat, patend)) < patend) { |
a6ec74c1 JH |
464 | datumtype = *pat++ & 0xFF; |
465 | #ifdef PERL_NATINT_PACK | |
466 | natint = 0; | |
467 | #endif | |
206947d2 IZ |
468 | /* do first one only unless in list context |
469 | / is implemented by unpacking the count, then poping it from the | |
470 | stack, so must check that we're not in the middle of a / */ | |
471 | if ( (flags & UNPACK_ONLY_ONE) | |
472 | && (SP - PL_stack_base == start_sp_offset + 1) | |
473 | && (datumtype != '/') ) | |
474 | break; | |
a6ec74c1 | 475 | if (*pat == '!') { |
62f95557 | 476 | static const char natstr[] = "sSiIlLxX"; |
a6ec74c1 JH |
477 | |
478 | if (strchr(natstr, datumtype)) { | |
62f95557 IZ |
479 | if (datumtype == 'x' || datumtype == 'X') { |
480 | datumtype |= TYPE_IS_SHRIEKING; | |
481 | } else { /* XXXX Should be redone similarly! */ | |
a6ec74c1 | 482 | #ifdef PERL_NATINT_PACK |
62f95557 | 483 | natint = 1; |
a6ec74c1 | 484 | #endif |
62f95557 | 485 | } |
a6ec74c1 JH |
486 | pat++; |
487 | } | |
488 | else | |
518eff30 | 489 | Perl_croak(aTHX_ "'!' allowed only after types %s", natstr); |
a6ec74c1 | 490 | } |
18529408 IZ |
491 | len = find_count(&pat, patend, &star); |
492 | if (star > 0) | |
493 | len = strend - strbeg; /* long enough */ | |
494 | else if (star < 0) /* No explicit len */ | |
206947d2 | 495 | len = datumtype != '@'; |
18529408 | 496 | |
a6ec74c1 JH |
497 | redo_switch: |
498 | switch(datumtype) { | |
499 | default: | |
518eff30 | 500 | Perl_croak(aTHX_ "Invalid type in unpack: '%c'", (int)datumtype); |
a6ec74c1 JH |
501 | case ',': /* grandfather in commas but with a warning */ |
502 | if (commas++ == 0 && ckWARN(WARN_UNPACK)) | |
9014280d | 503 | Perl_warner(aTHX_ packWARN(WARN_UNPACK), |
a6ec74c1 JH |
504 | "Invalid type in unpack: '%c'", (int)datumtype); |
505 | break; | |
506 | case '%': | |
18529408 IZ |
507 | if (len == 1 && pat[-1] != '1' && pat[-1] != ']') |
508 | len = 16; /* len is not specified */ | |
a6ec74c1 | 509 | checksum = len; |
92d41999 | 510 | cuv = 0; |
a6ec74c1 | 511 | cdouble = 0; |
18529408 | 512 | continue; |
a6ec74c1 | 513 | break; |
18529408 IZ |
514 | case '(': |
515 | { | |
516 | char *beg = pat; | |
517 | char *ss = s; /* Move from register */ | |
518 | ||
519 | if (star >= 0) | |
518eff30 | 520 | Perl_croak(aTHX_ "()-group starts with a count"); |
18529408 IZ |
521 | aptr = group_end(beg, patend, ')'); |
522 | pat = aptr + 1; | |
523 | if (star != -2) { | |
524 | len = find_count(&pat, patend, &star); | |
525 | if (star < 0) /* No count */ | |
526 | len = 1; | |
527 | else if (star > 0) /* Star */ | |
528 | len = strend - strbeg; /* long enough? */ | |
529 | } | |
530 | PUTBACK; | |
531 | while (len--) { | |
532 | unpack_str(beg, aptr, ss, strbeg, strend, &ss, | |
533 | ocnt + SP - PL_stack_base - start_sp_offset, flags); | |
534 | if (star > 0 && ss == strend) | |
535 | break; /* No way to continue */ | |
536 | } | |
537 | SPAGAIN; | |
538 | s = ss; | |
539 | break; | |
540 | } | |
a6ec74c1 JH |
541 | case '@': |
542 | if (len > strend - strbeg) | |
518eff30 | 543 | Perl_croak(aTHX_ "@ outside of string"); |
a6ec74c1 JH |
544 | s = strbeg + len; |
545 | break; | |
62f95557 IZ |
546 | case 'X' | TYPE_IS_SHRIEKING: |
547 | if (!len) /* Avoid division by 0 */ | |
548 | len = 1; | |
549 | len = (s - strbeg) % len; | |
550 | /* FALL THROUGH */ | |
a6ec74c1 JH |
551 | case 'X': |
552 | if (len > s - strbeg) | |
518eff30 | 553 | Perl_croak(aTHX_ "X outside of string"); |
a6ec74c1 JH |
554 | s -= len; |
555 | break; | |
62f95557 IZ |
556 | case 'x' | TYPE_IS_SHRIEKING: |
557 | if (!len) /* Avoid division by 0 */ | |
558 | len = 1; | |
559 | aint = (s - strbeg) % len; | |
560 | if (aint) /* Other portable ways? */ | |
561 | len = len - aint; | |
562 | else | |
563 | len = 0; | |
564 | /* FALL THROUGH */ | |
a6ec74c1 JH |
565 | case 'x': |
566 | if (len > strend - s) | |
518eff30 | 567 | Perl_croak(aTHX_ "x outside of string"); |
a6ec74c1 JH |
568 | s += len; |
569 | break; | |
570 | case '/': | |
18529408 | 571 | if (ocnt + SP - PL_stack_base - start_sp_offset <= 0) |
518eff30 | 572 | Perl_croak(aTHX_ "/ must follow a numeric type"); |
a6ec74c1 JH |
573 | datumtype = *pat++; |
574 | if (*pat == '*') | |
575 | pat++; /* ignore '*' for compatibility with pack */ | |
576 | if (isDIGIT(*pat)) | |
518eff30 | 577 | Perl_croak(aTHX_ "/ cannot take a count" ); |
a6ec74c1 | 578 | len = POPi; |
18529408 | 579 | star = -2; |
a6ec74c1 JH |
580 | goto redo_switch; |
581 | case 'A': | |
582 | case 'Z': | |
583 | case 'a': | |
584 | if (len > strend - s) | |
585 | len = strend - s; | |
586 | if (checksum) | |
587 | goto uchar_checksum; | |
588 | sv = NEWSV(35, len); | |
589 | sv_setpvn(sv, s, len); | |
a6ec74c1 JH |
590 | if (datumtype == 'A' || datumtype == 'Z') { |
591 | aptr = s; /* borrow register */ | |
592 | if (datumtype == 'Z') { /* 'Z' strips stuff after first null */ | |
593 | s = SvPVX(sv); | |
594 | while (*s) | |
595 | s++; | |
18529408 | 596 | if (star > 0) /* exact for 'Z*' */ |
d50dd4e4 | 597 | len = s - SvPVX(sv) + 1; |
a6ec74c1 JH |
598 | } |
599 | else { /* 'A' strips both nulls and spaces */ | |
600 | s = SvPVX(sv) + len - 1; | |
601 | while (s >= SvPVX(sv) && (!*s || isSPACE(*s))) | |
602 | s--; | |
603 | *++s = '\0'; | |
604 | } | |
605 | SvCUR_set(sv, s - SvPVX(sv)); | |
606 | s = aptr; /* unborrow register */ | |
607 | } | |
d50dd4e4 | 608 | s += len; |
a6ec74c1 JH |
609 | XPUSHs(sv_2mortal(sv)); |
610 | break; | |
611 | case 'B': | |
612 | case 'b': | |
18529408 | 613 | if (star > 0 || len > (strend - s) * 8) |
a6ec74c1 JH |
614 | len = (strend - s) * 8; |
615 | if (checksum) { | |
616 | if (!PL_bitcount) { | |
617 | Newz(601, PL_bitcount, 256, char); | |
618 | for (bits = 1; bits < 256; bits++) { | |
619 | if (bits & 1) PL_bitcount[bits]++; | |
620 | if (bits & 2) PL_bitcount[bits]++; | |
621 | if (bits & 4) PL_bitcount[bits]++; | |
622 | if (bits & 8) PL_bitcount[bits]++; | |
623 | if (bits & 16) PL_bitcount[bits]++; | |
624 | if (bits & 32) PL_bitcount[bits]++; | |
625 | if (bits & 64) PL_bitcount[bits]++; | |
626 | if (bits & 128) PL_bitcount[bits]++; | |
627 | } | |
628 | } | |
629 | while (len >= 8) { | |
92d41999 | 630 | cuv += PL_bitcount[*(unsigned char*)s++]; |
a6ec74c1 JH |
631 | len -= 8; |
632 | } | |
633 | if (len) { | |
634 | bits = *s; | |
635 | if (datumtype == 'b') { | |
636 | while (len-- > 0) { | |
92d41999 | 637 | if (bits & 1) cuv++; |
a6ec74c1 JH |
638 | bits >>= 1; |
639 | } | |
640 | } | |
641 | else { | |
642 | while (len-- > 0) { | |
92d41999 | 643 | if (bits & 128) cuv++; |
a6ec74c1 JH |
644 | bits <<= 1; |
645 | } | |
646 | } | |
647 | } | |
648 | break; | |
649 | } | |
650 | sv = NEWSV(35, len + 1); | |
651 | SvCUR_set(sv, len); | |
652 | SvPOK_on(sv); | |
653 | str = SvPVX(sv); | |
654 | if (datumtype == 'b') { | |
655 | aint = len; | |
656 | for (len = 0; len < aint; len++) { | |
657 | if (len & 7) /*SUPPRESS 595*/ | |
658 | bits >>= 1; | |
659 | else | |
660 | bits = *s++; | |
661 | *str++ = '0' + (bits & 1); | |
662 | } | |
663 | } | |
664 | else { | |
665 | aint = len; | |
666 | for (len = 0; len < aint; len++) { | |
667 | if (len & 7) | |
668 | bits <<= 1; | |
669 | else | |
670 | bits = *s++; | |
671 | *str++ = '0' + ((bits & 128) != 0); | |
672 | } | |
673 | } | |
674 | *str = '\0'; | |
675 | XPUSHs(sv_2mortal(sv)); | |
676 | break; | |
677 | case 'H': | |
678 | case 'h': | |
18529408 | 679 | if (star > 0 || len > (strend - s) * 2) |
a6ec74c1 JH |
680 | len = (strend - s) * 2; |
681 | sv = NEWSV(35, len + 1); | |
682 | SvCUR_set(sv, len); | |
683 | SvPOK_on(sv); | |
684 | str = SvPVX(sv); | |
685 | if (datumtype == 'h') { | |
686 | aint = len; | |
687 | for (len = 0; len < aint; len++) { | |
688 | if (len & 1) | |
689 | bits >>= 4; | |
690 | else | |
691 | bits = *s++; | |
692 | *str++ = PL_hexdigit[bits & 15]; | |
693 | } | |
694 | } | |
695 | else { | |
696 | aint = len; | |
697 | for (len = 0; len < aint; len++) { | |
698 | if (len & 1) | |
699 | bits <<= 4; | |
700 | else | |
701 | bits = *s++; | |
702 | *str++ = PL_hexdigit[(bits >> 4) & 15]; | |
703 | } | |
704 | } | |
705 | *str = '\0'; | |
706 | XPUSHs(sv_2mortal(sv)); | |
707 | break; | |
708 | case 'c': | |
709 | if (len > strend - s) | |
710 | len = strend - s; | |
711 | if (checksum) { | |
712 | while (len-- > 0) { | |
713 | aint = *s++; | |
714 | if (aint >= 128) /* fake up signed chars */ | |
715 | aint -= 256; | |
fa8ec7c1 NC |
716 | if (checksum > bits_in_uv) |
717 | cdouble += (NV)aint; | |
718 | else | |
92d41999 | 719 | cuv += aint; |
a6ec74c1 JH |
720 | } |
721 | } | |
722 | else { | |
c8f824eb NC |
723 | if (len && (flags & UNPACK_ONLY_ONE)) |
724 | len = 1; | |
a6ec74c1 JH |
725 | EXTEND(SP, len); |
726 | EXTEND_MORTAL(len); | |
727 | while (len-- > 0) { | |
728 | aint = *s++; | |
729 | if (aint >= 128) /* fake up signed chars */ | |
730 | aint -= 256; | |
731 | sv = NEWSV(36, 0); | |
732 | sv_setiv(sv, (IV)aint); | |
733 | PUSHs(sv_2mortal(sv)); | |
734 | } | |
735 | } | |
736 | break; | |
737 | case 'C': | |
35bcd338 JH |
738 | unpack_C: /* unpack U will jump here if not UTF-8 */ |
739 | if (len == 0) { | |
740 | do_utf8 = FALSE; | |
741 | break; | |
742 | } | |
a6ec74c1 JH |
743 | if (len > strend - s) |
744 | len = strend - s; | |
745 | if (checksum) { | |
746 | uchar_checksum: | |
747 | while (len-- > 0) { | |
748 | auint = *s++ & 255; | |
92d41999 | 749 | cuv += auint; |
a6ec74c1 JH |
750 | } |
751 | } | |
752 | else { | |
c8f824eb NC |
753 | if (len && (flags & UNPACK_ONLY_ONE)) |
754 | len = 1; | |
a6ec74c1 JH |
755 | EXTEND(SP, len); |
756 | EXTEND_MORTAL(len); | |
757 | while (len-- > 0) { | |
758 | auint = *s++ & 255; | |
759 | sv = NEWSV(37, 0); | |
760 | sv_setiv(sv, (IV)auint); | |
761 | PUSHs(sv_2mortal(sv)); | |
762 | } | |
763 | } | |
764 | break; | |
765 | case 'U': | |
35bcd338 JH |
766 | if (len == 0) { |
767 | do_utf8 = TRUE; | |
768 | break; | |
769 | } | |
770 | if (!do_utf8) | |
771 | goto unpack_C; | |
a6ec74c1 JH |
772 | if (len > strend - s) |
773 | len = strend - s; | |
774 | if (checksum) { | |
775 | while (len-- > 0 && s < strend) { | |
776 | STRLEN alen; | |
872c91ae | 777 | auint = NATIVE_TO_UNI(utf8n_to_uvchr((U8*)s, strend - s, &alen, ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANYUV)); |
a6ec74c1 JH |
778 | along = alen; |
779 | s += along; | |
fa8ec7c1 | 780 | if (checksum > bits_in_uv) |
a6ec74c1 JH |
781 | cdouble += (NV)auint; |
782 | else | |
92d41999 | 783 | cuv += auint; |
a6ec74c1 JH |
784 | } |
785 | } | |
786 | else { | |
c8f824eb NC |
787 | if (len && (flags & UNPACK_ONLY_ONE)) |
788 | len = 1; | |
a6ec74c1 JH |
789 | EXTEND(SP, len); |
790 | EXTEND_MORTAL(len); | |
791 | while (len-- > 0 && s < strend) { | |
792 | STRLEN alen; | |
872c91ae | 793 | auint = NATIVE_TO_UNI(utf8n_to_uvchr((U8*)s, strend - s, &alen, ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANYUV)); |
a6ec74c1 JH |
794 | along = alen; |
795 | s += along; | |
796 | sv = NEWSV(37, 0); | |
797 | sv_setuv(sv, (UV)auint); | |
798 | PUSHs(sv_2mortal(sv)); | |
799 | } | |
800 | } | |
801 | break; | |
802 | case 's': | |
803 | #if SHORTSIZE == SIZE16 | |
804 | along = (strend - s) / SIZE16; | |
805 | #else | |
806 | along = (strend - s) / (natint ? sizeof(short) : SIZE16); | |
807 | #endif | |
808 | if (len > along) | |
809 | len = along; | |
810 | if (checksum) { | |
811 | #if SHORTSIZE != SIZE16 | |
812 | if (natint) { | |
813 | short ashort; | |
814 | while (len-- > 0) { | |
815 | COPYNN(s, &ashort, sizeof(short)); | |
816 | s += sizeof(short); | |
fa8ec7c1 NC |
817 | if (checksum > bits_in_uv) |
818 | cdouble += (NV)ashort; | |
819 | else | |
92d41999 | 820 | cuv += ashort; |
a6ec74c1 JH |
821 | |
822 | } | |
823 | } | |
824 | else | |
825 | #endif | |
826 | { | |
827 | while (len-- > 0) { | |
828 | COPY16(s, &ashort); | |
829 | #if SHORTSIZE > SIZE16 | |
830 | if (ashort > 32767) | |
831 | ashort -= 65536; | |
832 | #endif | |
833 | s += SIZE16; | |
fa8ec7c1 NC |
834 | if (checksum > bits_in_uv) |
835 | cdouble += (NV)ashort; | |
836 | else | |
92d41999 | 837 | cuv += ashort; |
a6ec74c1 JH |
838 | } |
839 | } | |
840 | } | |
841 | else { | |
c8f824eb NC |
842 | if (len && (flags & UNPACK_ONLY_ONE)) |
843 | len = 1; | |
a6ec74c1 JH |
844 | EXTEND(SP, len); |
845 | EXTEND_MORTAL(len); | |
846 | #if SHORTSIZE != SIZE16 | |
847 | if (natint) { | |
848 | short ashort; | |
849 | while (len-- > 0) { | |
850 | COPYNN(s, &ashort, sizeof(short)); | |
851 | s += sizeof(short); | |
852 | sv = NEWSV(38, 0); | |
853 | sv_setiv(sv, (IV)ashort); | |
854 | PUSHs(sv_2mortal(sv)); | |
855 | } | |
856 | } | |
857 | else | |
858 | #endif | |
859 | { | |
860 | while (len-- > 0) { | |
861 | COPY16(s, &ashort); | |
862 | #if SHORTSIZE > SIZE16 | |
863 | if (ashort > 32767) | |
864 | ashort -= 65536; | |
865 | #endif | |
866 | s += SIZE16; | |
867 | sv = NEWSV(38, 0); | |
868 | sv_setiv(sv, (IV)ashort); | |
869 | PUSHs(sv_2mortal(sv)); | |
870 | } | |
871 | } | |
872 | } | |
873 | break; | |
874 | case 'v': | |
875 | case 'n': | |
876 | case 'S': | |
877 | #if SHORTSIZE == SIZE16 | |
878 | along = (strend - s) / SIZE16; | |
879 | #else | |
880 | unatint = natint && datumtype == 'S'; | |
881 | along = (strend - s) / (unatint ? sizeof(unsigned short) : SIZE16); | |
882 | #endif | |
883 | if (len > along) | |
884 | len = along; | |
885 | if (checksum) { | |
886 | #if SHORTSIZE != SIZE16 | |
887 | if (unatint) { | |
888 | unsigned short aushort; | |
889 | while (len-- > 0) { | |
890 | COPYNN(s, &aushort, sizeof(unsigned short)); | |
891 | s += sizeof(unsigned short); | |
fa8ec7c1 NC |
892 | if (checksum > bits_in_uv) |
893 | cdouble += (NV)aushort; | |
894 | else | |
92d41999 | 895 | cuv += aushort; |
a6ec74c1 JH |
896 | } |
897 | } | |
898 | else | |
899 | #endif | |
900 | { | |
901 | while (len-- > 0) { | |
902 | COPY16(s, &aushort); | |
903 | s += SIZE16; | |
904 | #ifdef HAS_NTOHS | |
905 | if (datumtype == 'n') | |
906 | aushort = PerlSock_ntohs(aushort); | |
907 | #endif | |
908 | #ifdef HAS_VTOHS | |
909 | if (datumtype == 'v') | |
910 | aushort = vtohs(aushort); | |
911 | #endif | |
fa8ec7c1 NC |
912 | if (checksum > bits_in_uv) |
913 | cdouble += (NV)aushort; | |
914 | else | |
92d41999 | 915 | cuv += aushort; |
a6ec74c1 JH |
916 | } |
917 | } | |
918 | } | |
919 | else { | |
c8f824eb NC |
920 | if (len && (flags & UNPACK_ONLY_ONE)) |
921 | len = 1; | |
a6ec74c1 JH |
922 | EXTEND(SP, len); |
923 | EXTEND_MORTAL(len); | |
924 | #if SHORTSIZE != SIZE16 | |
925 | if (unatint) { | |
926 | unsigned short aushort; | |
927 | while (len-- > 0) { | |
928 | COPYNN(s, &aushort, sizeof(unsigned short)); | |
929 | s += sizeof(unsigned short); | |
930 | sv = NEWSV(39, 0); | |
931 | sv_setiv(sv, (UV)aushort); | |
932 | PUSHs(sv_2mortal(sv)); | |
933 | } | |
934 | } | |
935 | else | |
936 | #endif | |
937 | { | |
938 | while (len-- > 0) { | |
939 | COPY16(s, &aushort); | |
940 | s += SIZE16; | |
941 | sv = NEWSV(39, 0); | |
942 | #ifdef HAS_NTOHS | |
943 | if (datumtype == 'n') | |
944 | aushort = PerlSock_ntohs(aushort); | |
945 | #endif | |
946 | #ifdef HAS_VTOHS | |
947 | if (datumtype == 'v') | |
948 | aushort = vtohs(aushort); | |
949 | #endif | |
950 | sv_setiv(sv, (UV)aushort); | |
951 | PUSHs(sv_2mortal(sv)); | |
952 | } | |
953 | } | |
954 | } | |
955 | break; | |
956 | case 'i': | |
957 | along = (strend - s) / sizeof(int); | |
958 | if (len > along) | |
959 | len = along; | |
960 | if (checksum) { | |
961 | while (len-- > 0) { | |
962 | Copy(s, &aint, 1, int); | |
963 | s += sizeof(int); | |
fa8ec7c1 | 964 | if (checksum > bits_in_uv) |
a6ec74c1 JH |
965 | cdouble += (NV)aint; |
966 | else | |
92d41999 | 967 | cuv += aint; |
a6ec74c1 JH |
968 | } |
969 | } | |
970 | else { | |
c8f824eb NC |
971 | if (len && (flags & UNPACK_ONLY_ONE)) |
972 | len = 1; | |
a6ec74c1 JH |
973 | EXTEND(SP, len); |
974 | EXTEND_MORTAL(len); | |
975 | while (len-- > 0) { | |
976 | Copy(s, &aint, 1, int); | |
977 | s += sizeof(int); | |
978 | sv = NEWSV(40, 0); | |
979 | #ifdef __osf__ | |
980 | /* Without the dummy below unpack("i", pack("i",-1)) | |
981 | * return 0xFFffFFff instead of -1 for Digital Unix V4.0 | |
982 | * cc with optimization turned on. | |
983 | * | |
984 | * The bug was detected in | |
985 | * DEC C V5.8-009 on Digital UNIX V4.0 (Rev. 1091) (V4.0E) | |
986 | * with optimization (-O4) turned on. | |
987 | * DEC C V5.2-040 on Digital UNIX V4.0 (Rev. 564) (V4.0B) | |
988 | * does not have this problem even with -O4. | |
989 | * | |
990 | * This bug was reported as DECC_BUGS 1431 | |
991 | * and tracked internally as GEM_BUGS 7775. | |
992 | * | |
993 | * The bug is fixed in | |
994 | * Tru64 UNIX V5.0: Compaq C V6.1-006 or later | |
995 | * UNIX V4.0F support: DEC C V5.9-006 or later | |
996 | * UNIX V4.0E support: DEC C V5.8-011 or later | |
997 | * and also in DTK. | |
998 | * | |
999 | * See also few lines later for the same bug. | |
1000 | */ | |
1001 | (aint) ? | |
1002 | sv_setiv(sv, (IV)aint) : | |
1003 | #endif | |
1004 | sv_setiv(sv, (IV)aint); | |
1005 | PUSHs(sv_2mortal(sv)); | |
1006 | } | |
1007 | } | |
1008 | break; | |
1009 | case 'I': | |
1010 | along = (strend - s) / sizeof(unsigned int); | |
1011 | if (len > along) | |
1012 | len = along; | |
1013 | if (checksum) { | |
1014 | while (len-- > 0) { | |
1015 | Copy(s, &auint, 1, unsigned int); | |
1016 | s += sizeof(unsigned int); | |
fa8ec7c1 | 1017 | if (checksum > bits_in_uv) |
a6ec74c1 JH |
1018 | cdouble += (NV)auint; |
1019 | else | |
92d41999 | 1020 | cuv += auint; |
a6ec74c1 JH |
1021 | } |
1022 | } | |
1023 | else { | |
c8f824eb NC |
1024 | if (len && (flags & UNPACK_ONLY_ONE)) |
1025 | len = 1; | |
a6ec74c1 JH |
1026 | EXTEND(SP, len); |
1027 | EXTEND_MORTAL(len); | |
1028 | while (len-- > 0) { | |
1029 | Copy(s, &auint, 1, unsigned int); | |
1030 | s += sizeof(unsigned int); | |
1031 | sv = NEWSV(41, 0); | |
1032 | #ifdef __osf__ | |
1033 | /* Without the dummy below unpack("I", pack("I",0xFFFFFFFF)) | |
1034 | * returns 1.84467440737096e+19 instead of 0xFFFFFFFF. | |
1035 | * See details few lines earlier. */ | |
1036 | (auint) ? | |
1037 | sv_setuv(sv, (UV)auint) : | |
1038 | #endif | |
1039 | sv_setuv(sv, (UV)auint); | |
1040 | PUSHs(sv_2mortal(sv)); | |
1041 | } | |
1042 | } | |
1043 | break; | |
92d41999 JH |
1044 | case 'j': |
1045 | along = (strend - s) / IVSIZE; | |
1046 | if (len > along) | |
1047 | len = along; | |
1048 | if (checksum) { | |
1049 | while (len-- > 0) { | |
1050 | Copy(s, &aiv, 1, IV); | |
1051 | s += IVSIZE; | |
1052 | if (checksum > bits_in_uv) | |
1053 | cdouble += (NV)aiv; | |
1054 | else | |
1055 | cuv += aiv; | |
1056 | } | |
1057 | } | |
1058 | else { | |
c8f824eb NC |
1059 | if (len && (flags & UNPACK_ONLY_ONE)) |
1060 | len = 1; | |
92d41999 JH |
1061 | EXTEND(SP, len); |
1062 | EXTEND_MORTAL(len); | |
1063 | while (len-- > 0) { | |
1064 | Copy(s, &aiv, 1, IV); | |
1065 | s += IVSIZE; | |
1066 | sv = NEWSV(40, 0); | |
1067 | sv_setiv(sv, aiv); | |
1068 | PUSHs(sv_2mortal(sv)); | |
1069 | } | |
1070 | } | |
1071 | break; | |
1072 | case 'J': | |
1073 | along = (strend - s) / UVSIZE; | |
1074 | if (len > along) | |
1075 | len = along; | |
1076 | if (checksum) { | |
1077 | while (len-- > 0) { | |
1078 | Copy(s, &auv, 1, UV); | |
1079 | s += UVSIZE; | |
1080 | if (checksum > bits_in_uv) | |
1081 | cdouble += (NV)auv; | |
1082 | else | |
1083 | cuv += auv; | |
1084 | } | |
1085 | } | |
1086 | else { | |
c8f824eb NC |
1087 | if (len && (flags & UNPACK_ONLY_ONE)) |
1088 | len = 1; | |
92d41999 JH |
1089 | EXTEND(SP, len); |
1090 | EXTEND_MORTAL(len); | |
1091 | while (len-- > 0) { | |
1092 | Copy(s, &auv, 1, UV); | |
1093 | s += UVSIZE; | |
1094 | sv = NEWSV(41, 0); | |
1095 | sv_setuv(sv, auv); | |
1096 | PUSHs(sv_2mortal(sv)); | |
1097 | } | |
1098 | } | |
1099 | break; | |
a6ec74c1 JH |
1100 | case 'l': |
1101 | #if LONGSIZE == SIZE32 | |
1102 | along = (strend - s) / SIZE32; | |
1103 | #else | |
1104 | along = (strend - s) / (natint ? sizeof(long) : SIZE32); | |
1105 | #endif | |
1106 | if (len > along) | |
1107 | len = along; | |
1108 | if (checksum) { | |
1109 | #if LONGSIZE != SIZE32 | |
1110 | if (natint) { | |
1111 | while (len-- > 0) { | |
1112 | COPYNN(s, &along, sizeof(long)); | |
1113 | s += sizeof(long); | |
fa8ec7c1 | 1114 | if (checksum > bits_in_uv) |
a6ec74c1 JH |
1115 | cdouble += (NV)along; |
1116 | else | |
92d41999 | 1117 | cuv += along; |
a6ec74c1 JH |
1118 | } |
1119 | } | |
1120 | else | |
1121 | #endif | |
1122 | { | |
1123 | while (len-- > 0) { | |
1124 | #if LONGSIZE > SIZE32 && INTSIZE == SIZE32 | |
1125 | I32 along; | |
1126 | #endif | |
1127 | COPY32(s, &along); | |
1128 | #if LONGSIZE > SIZE32 | |
1129 | if (along > 2147483647) | |
1130 | along -= 4294967296; | |
1131 | #endif | |
1132 | s += SIZE32; | |
fa8ec7c1 | 1133 | if (checksum > bits_in_uv) |
a6ec74c1 JH |
1134 | cdouble += (NV)along; |
1135 | else | |
92d41999 | 1136 | cuv += along; |
a6ec74c1 JH |
1137 | } |
1138 | } | |
1139 | } | |
1140 | else { | |
c8f824eb NC |
1141 | if (len && (flags & UNPACK_ONLY_ONE)) |
1142 | len = 1; | |
a6ec74c1 JH |
1143 | EXTEND(SP, len); |
1144 | EXTEND_MORTAL(len); | |
1145 | #if LONGSIZE != SIZE32 | |
1146 | if (natint) { | |
1147 | while (len-- > 0) { | |
1148 | COPYNN(s, &along, sizeof(long)); | |
1149 | s += sizeof(long); | |
1150 | sv = NEWSV(42, 0); | |
1151 | sv_setiv(sv, (IV)along); | |
1152 | PUSHs(sv_2mortal(sv)); | |
1153 | } | |
1154 | } | |
1155 | else | |
1156 | #endif | |
1157 | { | |
1158 | while (len-- > 0) { | |
1159 | #if LONGSIZE > SIZE32 && INTSIZE == SIZE32 | |
1160 | I32 along; | |
1161 | #endif | |
1162 | COPY32(s, &along); | |
1163 | #if LONGSIZE > SIZE32 | |
1164 | if (along > 2147483647) | |
1165 | along -= 4294967296; | |
1166 | #endif | |
1167 | s += SIZE32; | |
1168 | sv = NEWSV(42, 0); | |
1169 | sv_setiv(sv, (IV)along); | |
1170 | PUSHs(sv_2mortal(sv)); | |
1171 | } | |
1172 | } | |
1173 | } | |
1174 | break; | |
1175 | case 'V': | |
1176 | case 'N': | |
1177 | case 'L': | |
1178 | #if LONGSIZE == SIZE32 | |
1179 | along = (strend - s) / SIZE32; | |
1180 | #else | |
1181 | unatint = natint && datumtype == 'L'; | |
1182 | along = (strend - s) / (unatint ? sizeof(unsigned long) : SIZE32); | |
1183 | #endif | |
1184 | if (len > along) | |
1185 | len = along; | |
1186 | if (checksum) { | |
1187 | #if LONGSIZE != SIZE32 | |
1188 | if (unatint) { | |
1189 | unsigned long aulong; | |
1190 | while (len-- > 0) { | |
1191 | COPYNN(s, &aulong, sizeof(unsigned long)); | |
1192 | s += sizeof(unsigned long); | |
fa8ec7c1 | 1193 | if (checksum > bits_in_uv) |
a6ec74c1 JH |
1194 | cdouble += (NV)aulong; |
1195 | else | |
92d41999 | 1196 | cuv += aulong; |
a6ec74c1 JH |
1197 | } |
1198 | } | |
1199 | else | |
1200 | #endif | |
1201 | { | |
1202 | while (len-- > 0) { | |
1203 | COPY32(s, &aulong); | |
1204 | s += SIZE32; | |
1205 | #ifdef HAS_NTOHL | |
1206 | if (datumtype == 'N') | |
1207 | aulong = PerlSock_ntohl(aulong); | |
1208 | #endif | |
1209 | #ifdef HAS_VTOHL | |
1210 | if (datumtype == 'V') | |
1211 | aulong = vtohl(aulong); | |
1212 | #endif | |
fa8ec7c1 | 1213 | if (checksum > bits_in_uv) |
a6ec74c1 JH |
1214 | cdouble += (NV)aulong; |
1215 | else | |
92d41999 | 1216 | cuv += aulong; |
a6ec74c1 JH |
1217 | } |
1218 | } | |
1219 | } | |
1220 | else { | |
c8f824eb NC |
1221 | if (len && (flags & UNPACK_ONLY_ONE)) |
1222 | len = 1; | |
a6ec74c1 JH |
1223 | EXTEND(SP, len); |
1224 | EXTEND_MORTAL(len); | |
1225 | #if LONGSIZE != SIZE32 | |
1226 | if (unatint) { | |
1227 | unsigned long aulong; | |
1228 | while (len-- > 0) { | |
1229 | COPYNN(s, &aulong, sizeof(unsigned long)); | |
1230 | s += sizeof(unsigned long); | |
1231 | sv = NEWSV(43, 0); | |
1232 | sv_setuv(sv, (UV)aulong); | |
1233 | PUSHs(sv_2mortal(sv)); | |
1234 | } | |
1235 | } | |
1236 | else | |
1237 | #endif | |
1238 | { | |
1239 | while (len-- > 0) { | |
1240 | COPY32(s, &aulong); | |
1241 | s += SIZE32; | |
1242 | #ifdef HAS_NTOHL | |
1243 | if (datumtype == 'N') | |
1244 | aulong = PerlSock_ntohl(aulong); | |
1245 | #endif | |
1246 | #ifdef HAS_VTOHL | |
1247 | if (datumtype == 'V') | |
1248 | aulong = vtohl(aulong); | |
1249 | #endif | |
1250 | sv = NEWSV(43, 0); | |
1251 | sv_setuv(sv, (UV)aulong); | |
1252 | PUSHs(sv_2mortal(sv)); | |
1253 | } | |
1254 | } | |
1255 | } | |
1256 | break; | |
1257 | case 'p': | |
1258 | along = (strend - s) / sizeof(char*); | |
1259 | if (len > along) | |
1260 | len = along; | |
1261 | EXTEND(SP, len); | |
1262 | EXTEND_MORTAL(len); | |
1263 | while (len-- > 0) { | |
1264 | if (sizeof(char*) > strend - s) | |
1265 | break; | |
1266 | else { | |
1267 | Copy(s, &aptr, 1, char*); | |
1268 | s += sizeof(char*); | |
1269 | } | |
1270 | sv = NEWSV(44, 0); | |
1271 | if (aptr) | |
1272 | sv_setpv(sv, aptr); | |
1273 | PUSHs(sv_2mortal(sv)); | |
1274 | } | |
1275 | break; | |
1276 | case 'w': | |
c8f824eb NC |
1277 | if (len && (flags & UNPACK_ONLY_ONE)) |
1278 | len = 1; | |
a6ec74c1 JH |
1279 | EXTEND(SP, len); |
1280 | EXTEND_MORTAL(len); | |
1281 | { | |
1282 | UV auv = 0; | |
1283 | U32 bytes = 0; | |
1284 | ||
1285 | while ((len > 0) && (s < strend)) { | |
1286 | auv = (auv << 7) | (*s & 0x7f); | |
1287 | /* UTF8_IS_XXXXX not right here - using constant 0x80 */ | |
1288 | if ((U8)(*s++) < 0x80) { | |
1289 | bytes = 0; | |
1290 | sv = NEWSV(40, 0); | |
1291 | sv_setuv(sv, auv); | |
1292 | PUSHs(sv_2mortal(sv)); | |
1293 | len--; | |
1294 | auv = 0; | |
1295 | } | |
1296 | else if (++bytes >= sizeof(UV)) { /* promote to string */ | |
1297 | char *t; | |
1298 | STRLEN n_a; | |
1299 | ||
1300 | sv = Perl_newSVpvf(aTHX_ "%.*"UVf, (int)TYPE_DIGITS(UV), auv); | |
1301 | while (s < strend) { | |
eb160463 | 1302 | sv = mul128(sv, (U8)(*s & 0x7f)); |
a6ec74c1 JH |
1303 | if (!(*s++ & 0x80)) { |
1304 | bytes = 0; | |
1305 | break; | |
1306 | } | |
1307 | } | |
1308 | t = SvPV(sv, n_a); | |
1309 | while (*t == '0') | |
1310 | t++; | |
1311 | sv_chop(sv, t); | |
1312 | PUSHs(sv_2mortal(sv)); | |
1313 | len--; | |
1314 | auv = 0; | |
1315 | } | |
1316 | } | |
1317 | if ((s >= strend) && bytes) | |
518eff30 | 1318 | Perl_croak(aTHX_ "Unterminated compressed integer"); |
a6ec74c1 JH |
1319 | } |
1320 | break; | |
1321 | case 'P': | |
18529408 | 1322 | if (star > 0) |
518eff30 | 1323 | Perl_croak(aTHX_ "P must have an explicit size"); |
a6ec74c1 JH |
1324 | EXTEND(SP, 1); |
1325 | if (sizeof(char*) > strend - s) | |
1326 | break; | |
1327 | else { | |
1328 | Copy(s, &aptr, 1, char*); | |
1329 | s += sizeof(char*); | |
1330 | } | |
1331 | sv = NEWSV(44, 0); | |
1332 | if (aptr) | |
1333 | sv_setpvn(sv, aptr, len); | |
1334 | PUSHs(sv_2mortal(sv)); | |
1335 | break; | |
1336 | #ifdef HAS_QUAD | |
1337 | case 'q': | |
1338 | along = (strend - s) / sizeof(Quad_t); | |
1339 | if (len > along) | |
1340 | len = along; | |
fa8ec7c1 NC |
1341 | if (checksum) { |
1342 | while (len-- > 0) { | |
a6ec74c1 JH |
1343 | Copy(s, &aquad, 1, Quad_t); |
1344 | s += sizeof(Quad_t); | |
fa8ec7c1 NC |
1345 | if (checksum > bits_in_uv) |
1346 | cdouble += (NV)aquad; | |
1347 | else | |
92d41999 | 1348 | cuv += aquad; |
a6ec74c1 | 1349 | } |
a6ec74c1 | 1350 | } |
fa8ec7c1 | 1351 | else { |
c8f824eb NC |
1352 | if (len && (flags & UNPACK_ONLY_ONE)) |
1353 | len = 1; | |
fa8ec7c1 NC |
1354 | EXTEND(SP, len); |
1355 | EXTEND_MORTAL(len); | |
1356 | while (len-- > 0) { | |
1357 | if (s + sizeof(Quad_t) > strend) | |
1358 | aquad = 0; | |
1359 | else { | |
92d41999 JH |
1360 | Copy(s, &aquad, 1, Quad_t); |
1361 | s += sizeof(Quad_t); | |
fa8ec7c1 NC |
1362 | } |
1363 | sv = NEWSV(42, 0); | |
1364 | if (aquad >= IV_MIN && aquad <= IV_MAX) | |
92d41999 | 1365 | sv_setiv(sv, (IV)aquad); |
fa8ec7c1 NC |
1366 | else |
1367 | sv_setnv(sv, (NV)aquad); | |
1368 | PUSHs(sv_2mortal(sv)); | |
1369 | } | |
1370 | } | |
a6ec74c1 JH |
1371 | break; |
1372 | case 'Q': | |
206947d2 | 1373 | along = (strend - s) / sizeof(Uquad_t); |
a6ec74c1 JH |
1374 | if (len > along) |
1375 | len = along; | |
fa8ec7c1 NC |
1376 | if (checksum) { |
1377 | while (len-- > 0) { | |
a6ec74c1 JH |
1378 | Copy(s, &auquad, 1, Uquad_t); |
1379 | s += sizeof(Uquad_t); | |
fa8ec7c1 NC |
1380 | if (checksum > bits_in_uv) |
1381 | cdouble += (NV)auquad; | |
1382 | else | |
92d41999 | 1383 | cuv += auquad; |
a6ec74c1 | 1384 | } |
a6ec74c1 | 1385 | } |
fa8ec7c1 | 1386 | else { |
c8f824eb NC |
1387 | if (len && (flags & UNPACK_ONLY_ONE)) |
1388 | len = 1; | |
fa8ec7c1 NC |
1389 | EXTEND(SP, len); |
1390 | EXTEND_MORTAL(len); | |
1391 | while (len-- > 0) { | |
1392 | if (s + sizeof(Uquad_t) > strend) | |
1393 | auquad = 0; | |
1394 | else { | |
1395 | Copy(s, &auquad, 1, Uquad_t); | |
1396 | s += sizeof(Uquad_t); | |
1397 | } | |
1398 | sv = NEWSV(43, 0); | |
1399 | if (auquad <= UV_MAX) | |
1400 | sv_setuv(sv, (UV)auquad); | |
1401 | else | |
1402 | sv_setnv(sv, (NV)auquad); | |
1403 | PUSHs(sv_2mortal(sv)); | |
1404 | } | |
1405 | } | |
a6ec74c1 JH |
1406 | break; |
1407 | #endif | |
1408 | /* float and double added gnb@melba.bby.oz.au 22/11/89 */ | |
1409 | case 'f': | |
a6ec74c1 JH |
1410 | along = (strend - s) / sizeof(float); |
1411 | if (len > along) | |
1412 | len = along; | |
1413 | if (checksum) { | |
1414 | while (len-- > 0) { | |
1415 | Copy(s, &afloat, 1, float); | |
1416 | s += sizeof(float); | |
1417 | cdouble += afloat; | |
1418 | } | |
1419 | } | |
1420 | else { | |
c8f824eb NC |
1421 | if (len && (flags & UNPACK_ONLY_ONE)) |
1422 | len = 1; | |
a6ec74c1 JH |
1423 | EXTEND(SP, len); |
1424 | EXTEND_MORTAL(len); | |
1425 | while (len-- > 0) { | |
1426 | Copy(s, &afloat, 1, float); | |
1427 | s += sizeof(float); | |
1428 | sv = NEWSV(47, 0); | |
1429 | sv_setnv(sv, (NV)afloat); | |
1430 | PUSHs(sv_2mortal(sv)); | |
1431 | } | |
1432 | } | |
1433 | break; | |
1434 | case 'd': | |
a6ec74c1 JH |
1435 | along = (strend - s) / sizeof(double); |
1436 | if (len > along) | |
1437 | len = along; | |
1438 | if (checksum) { | |
1439 | while (len-- > 0) { | |
1440 | Copy(s, &adouble, 1, double); | |
1441 | s += sizeof(double); | |
1442 | cdouble += adouble; | |
1443 | } | |
1444 | } | |
1445 | else { | |
c8f824eb NC |
1446 | if (len && (flags & UNPACK_ONLY_ONE)) |
1447 | len = 1; | |
a6ec74c1 JH |
1448 | EXTEND(SP, len); |
1449 | EXTEND_MORTAL(len); | |
1450 | while (len-- > 0) { | |
1451 | Copy(s, &adouble, 1, double); | |
1452 | s += sizeof(double); | |
1453 | sv = NEWSV(48, 0); | |
1454 | sv_setnv(sv, (NV)adouble); | |
1455 | PUSHs(sv_2mortal(sv)); | |
1456 | } | |
1457 | } | |
1458 | break; | |
92d41999 JH |
1459 | case 'F': |
1460 | along = (strend - s) / NVSIZE; | |
1461 | if (len > along) | |
1462 | len = along; | |
1463 | if (checksum) { | |
1464 | while (len-- > 0) { | |
1465 | Copy(s, &anv, 1, NV); | |
1466 | s += NVSIZE; | |
1467 | cdouble += anv; | |
1468 | } | |
1469 | } | |
1470 | else { | |
c8f824eb NC |
1471 | if (len && (flags & UNPACK_ONLY_ONE)) |
1472 | len = 1; | |
92d41999 JH |
1473 | EXTEND(SP, len); |
1474 | EXTEND_MORTAL(len); | |
1475 | while (len-- > 0) { | |
1476 | Copy(s, &anv, 1, NV); | |
1477 | s += NVSIZE; | |
1478 | sv = NEWSV(48, 0); | |
1479 | sv_setnv(sv, anv); | |
1480 | PUSHs(sv_2mortal(sv)); | |
1481 | } | |
1482 | } | |
1483 | break; | |
1484 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) | |
1485 | case 'D': | |
1486 | along = (strend - s) / LONG_DOUBLESIZE; | |
1487 | if (len > along) | |
1488 | len = along; | |
1489 | if (checksum) { | |
1490 | while (len-- > 0) { | |
1491 | Copy(s, &aldouble, 1, long double); | |
1492 | s += LONG_DOUBLESIZE; | |
1493 | cdouble += aldouble; | |
1494 | } | |
1495 | } | |
1496 | else { | |
c8f824eb NC |
1497 | if (len && (flags & UNPACK_ONLY_ONE)) |
1498 | len = 1; | |
92d41999 JH |
1499 | EXTEND(SP, len); |
1500 | EXTEND_MORTAL(len); | |
1501 | while (len-- > 0) { | |
1502 | Copy(s, &aldouble, 1, long double); | |
1503 | s += LONG_DOUBLESIZE; | |
1504 | sv = NEWSV(48, 0); | |
1505 | sv_setnv(sv, (NV)aldouble); | |
1506 | PUSHs(sv_2mortal(sv)); | |
1507 | } | |
1508 | } | |
1509 | break; | |
1510 | #endif | |
a6ec74c1 JH |
1511 | case 'u': |
1512 | /* MKS: | |
1513 | * Initialise the decode mapping. By using a table driven | |
1514 | * algorithm, the code will be character-set independent | |
1515 | * (and just as fast as doing character arithmetic) | |
1516 | */ | |
1517 | if (PL_uudmap['M'] == 0) { | |
1518 | int i; | |
1519 | ||
1520 | for (i = 0; i < sizeof(PL_uuemap); i += 1) | |
1521 | PL_uudmap[(U8)PL_uuemap[i]] = i; | |
1522 | /* | |
1523 | * Because ' ' and '`' map to the same value, | |
1524 | * we need to decode them both the same. | |
1525 | */ | |
1526 | PL_uudmap[' '] = 0; | |
1527 | } | |
1528 | ||
1529 | along = (strend - s) * 3 / 4; | |
1530 | sv = NEWSV(42, along); | |
1531 | if (along) | |
1532 | SvPOK_on(sv); | |
1533 | while (s < strend && *s > ' ' && ISUUCHAR(*s)) { | |
1534 | I32 a, b, c, d; | |
1535 | char hunk[4]; | |
1536 | ||
1537 | hunk[3] = '\0'; | |
1538 | len = PL_uudmap[*(U8*)s++] & 077; | |
1539 | while (len > 0) { | |
1540 | if (s < strend && ISUUCHAR(*s)) | |
1541 | a = PL_uudmap[*(U8*)s++] & 077; | |
1542 | else | |
1543 | a = 0; | |
1544 | if (s < strend && ISUUCHAR(*s)) | |
1545 | b = PL_uudmap[*(U8*)s++] & 077; | |
1546 | else | |
1547 | b = 0; | |
1548 | if (s < strend && ISUUCHAR(*s)) | |
1549 | c = PL_uudmap[*(U8*)s++] & 077; | |
1550 | else | |
1551 | c = 0; | |
1552 | if (s < strend && ISUUCHAR(*s)) | |
1553 | d = PL_uudmap[*(U8*)s++] & 077; | |
1554 | else | |
1555 | d = 0; | |
eb160463 GS |
1556 | hunk[0] = (char)((a << 2) | (b >> 4)); |
1557 | hunk[1] = (char)((b << 4) | (c >> 2)); | |
1558 | hunk[2] = (char)((c << 6) | d); | |
a6ec74c1 JH |
1559 | sv_catpvn(sv, hunk, (len > 3) ? 3 : len); |
1560 | len -= 3; | |
1561 | } | |
1562 | if (*s == '\n') | |
1563 | s++; | |
92aa5668 JH |
1564 | else /* possible checksum byte */ |
1565 | if (s + 1 < strend && s[1] == '\n') | |
1566 | s += 2; | |
a6ec74c1 JH |
1567 | } |
1568 | XPUSHs(sv_2mortal(sv)); | |
1569 | break; | |
1570 | } | |
1571 | if (checksum) { | |
1572 | sv = NEWSV(42, 0); | |
1573 | if (strchr("fFdD", datumtype) || | |
92d41999 JH |
1574 | (checksum > bits_in_uv && |
1575 | strchr("csSiIlLnNUvVqQjJ", datumtype)) ) { | |
a6ec74c1 JH |
1576 | NV trouble; |
1577 | ||
fa8ec7c1 | 1578 | adouble = (NV) (1 << (checksum & 15)); |
a6ec74c1 JH |
1579 | while (checksum >= 16) { |
1580 | checksum -= 16; | |
1581 | adouble *= 65536.0; | |
1582 | } | |
a6ec74c1 JH |
1583 | while (cdouble < 0.0) |
1584 | cdouble += adouble; | |
1585 | cdouble = Perl_modf(cdouble / adouble, &trouble) * adouble; | |
1586 | sv_setnv(sv, cdouble); | |
1587 | } | |
1588 | else { | |
fa8ec7c1 NC |
1589 | if (checksum < bits_in_uv) { |
1590 | UV mask = ((UV)1 << checksum) - 1; | |
92d41999 JH |
1591 | |
1592 | cuv &= mask; | |
a6ec74c1 | 1593 | } |
92d41999 | 1594 | sv_setuv(sv, cuv); |
a6ec74c1 JH |
1595 | } |
1596 | XPUSHs(sv_2mortal(sv)); | |
1597 | checksum = 0; | |
1598 | } | |
1599 | } | |
18529408 IZ |
1600 | if (new_s) |
1601 | *new_s = s; | |
1602 | PUTBACK; | |
1603 | return SP - PL_stack_base - start_sp_offset; | |
1604 | } | |
1605 | ||
1606 | PP(pp_unpack) | |
1607 | { | |
1608 | dSP; | |
1609 | dPOPPOPssrl; | |
1610 | I32 gimme = GIMME_V; | |
1611 | STRLEN llen; | |
1612 | STRLEN rlen; | |
1613 | register char *pat = SvPV(left, llen); | |
1614 | #ifdef PACKED_IS_OCTETS | |
1615 | /* Packed side is assumed to be octets - so force downgrade if it | |
1616 | has been UTF-8 encoded by accident | |
1617 | */ | |
1618 | register char *s = SvPVbyte(right, rlen); | |
1619 | #else | |
1620 | register char *s = SvPV(right, rlen); | |
1621 | #endif | |
1622 | char *strend = s + rlen; | |
1623 | register char *patend = pat + llen; | |
1624 | register I32 cnt; | |
1625 | ||
1626 | PUTBACK; | |
1627 | cnt = unpack_str(pat, patend, s, s, strend, NULL, 0, | |
1628 | ((gimme == G_SCALAR) ? UNPACK_ONLY_ONE : 0) | |
1629 | | (DO_UTF8(right) ? UNPACK_DO_UTF8 : 0)); | |
1630 | SPAGAIN; | |
1631 | if ( !cnt && gimme == G_SCALAR ) | |
1632 | PUSHs(&PL_sv_undef); | |
a6ec74c1 JH |
1633 | RETURN; |
1634 | } | |
1635 | ||
1636 | STATIC void | |
1637 | S_doencodes(pTHX_ register SV *sv, register char *s, register I32 len) | |
1638 | { | |
1639 | char hunk[5]; | |
1640 | ||
1641 | *hunk = PL_uuemap[len]; | |
1642 | sv_catpvn(sv, hunk, 1); | |
1643 | hunk[4] = '\0'; | |
1644 | while (len > 2) { | |
1645 | hunk[0] = PL_uuemap[(077 & (*s >> 2))]; | |
1646 | hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((s[1] >> 4) & 017)))]; | |
1647 | hunk[2] = PL_uuemap[(077 & (((s[1] << 2) & 074) | ((s[2] >> 6) & 03)))]; | |
1648 | hunk[3] = PL_uuemap[(077 & (s[2] & 077))]; | |
1649 | sv_catpvn(sv, hunk, 4); | |
1650 | s += 3; | |
1651 | len -= 3; | |
1652 | } | |
1653 | if (len > 0) { | |
1654 | char r = (len > 1 ? s[1] : '\0'); | |
1655 | hunk[0] = PL_uuemap[(077 & (*s >> 2))]; | |
1656 | hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((r >> 4) & 017)))]; | |
1657 | hunk[2] = PL_uuemap[(077 & ((r << 2) & 074))]; | |
1658 | hunk[3] = PL_uuemap[0]; | |
1659 | sv_catpvn(sv, hunk, 4); | |
1660 | } | |
1661 | sv_catpvn(sv, "\n", 1); | |
1662 | } | |
1663 | ||
1664 | STATIC SV * | |
1665 | S_is_an_int(pTHX_ char *s, STRLEN l) | |
1666 | { | |
1667 | STRLEN n_a; | |
1668 | SV *result = newSVpvn(s, l); | |
1669 | char *result_c = SvPV(result, n_a); /* convenience */ | |
1670 | char *out = result_c; | |
1671 | bool skip = 1; | |
1672 | bool ignore = 0; | |
1673 | ||
1674 | while (*s) { | |
1675 | switch (*s) { | |
1676 | case ' ': | |
1677 | break; | |
1678 | case '+': | |
1679 | if (!skip) { | |
1680 | SvREFCNT_dec(result); | |
1681 | return (NULL); | |
1682 | } | |
1683 | break; | |
1684 | case '0': | |
1685 | case '1': | |
1686 | case '2': | |
1687 | case '3': | |
1688 | case '4': | |
1689 | case '5': | |
1690 | case '6': | |
1691 | case '7': | |
1692 | case '8': | |
1693 | case '9': | |
1694 | skip = 0; | |
1695 | if (!ignore) { | |
1696 | *(out++) = *s; | |
1697 | } | |
1698 | break; | |
1699 | case '.': | |
1700 | ignore = 1; | |
1701 | break; | |
1702 | default: | |
1703 | SvREFCNT_dec(result); | |
1704 | return (NULL); | |
1705 | } | |
1706 | s++; | |
1707 | } | |
1708 | *(out++) = '\0'; | |
1709 | SvCUR_set(result, out - result_c); | |
1710 | return (result); | |
1711 | } | |
1712 | ||
1713 | /* pnum must be '\0' terminated */ | |
1714 | STATIC int | |
1715 | S_div128(pTHX_ SV *pnum, bool *done) | |
1716 | { | |
1717 | STRLEN len; | |
1718 | char *s = SvPV(pnum, len); | |
1719 | int m = 0; | |
1720 | int r = 0; | |
1721 | char *t = s; | |
1722 | ||
1723 | *done = 1; | |
1724 | while (*t) { | |
1725 | int i; | |
1726 | ||
1727 | i = m * 10 + (*t - '0'); | |
1728 | m = i & 0x7F; | |
1729 | r = (i >> 7); /* r < 10 */ | |
1730 | if (r) { | |
1731 | *done = 0; | |
1732 | } | |
1733 | *(t++) = '0' + r; | |
1734 | } | |
1735 | *(t++) = '\0'; | |
1736 | SvCUR_set(pnum, (STRLEN) (t - s)); | |
1737 | return (m); | |
1738 | } | |
1739 | ||
18529408 | 1740 | #define PACK_CHILD 0x1 |
a6ec74c1 | 1741 | |
18529408 IZ |
1742 | /* |
1743 | =for apidoc pack_cat | |
1744 | ||
1745 | The engine implementing pack() Perl function. | |
1746 | ||
1747 | =cut */ | |
1748 | ||
1749 | void | |
1750 | Perl_pack_cat(pTHX_ SV *cat, char *pat, register char *patend, register SV **beglist, SV **endlist, SV ***next_in_list, U32 flags) | |
a6ec74c1 | 1751 | { |
a6ec74c1 JH |
1752 | register I32 items; |
1753 | STRLEN fromlen; | |
a6ec74c1 JH |
1754 | register I32 len; |
1755 | I32 datumtype; | |
1756 | SV *fromstr; | |
1757 | /*SUPPRESS 442*/ | |
1758 | static char null10[] = {0,0,0,0,0,0,0,0,0,0}; | |
1759 | static char *space10 = " "; | |
18529408 | 1760 | int star; |
a6ec74c1 JH |
1761 | |
1762 | /* These must not be in registers: */ | |
1763 | char achar; | |
1764 | I16 ashort; | |
1765 | int aint; | |
1766 | unsigned int auint; | |
1767 | I32 along; | |
1768 | U32 aulong; | |
92d41999 JH |
1769 | IV aiv; |
1770 | UV auv; | |
1771 | NV anv; | |
1772 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) | |
1773 | long double aldouble; | |
1774 | #endif | |
a6ec74c1 JH |
1775 | #ifdef HAS_QUAD |
1776 | Quad_t aquad; | |
1777 | Uquad_t auquad; | |
1778 | #endif | |
1779 | char *aptr; | |
1780 | float afloat; | |
1781 | double adouble; | |
1782 | int commas = 0; | |
1783 | #ifdef PERL_NATINT_PACK | |
1784 | int natint; /* native integer */ | |
1785 | #endif | |
1786 | ||
18529408 IZ |
1787 | items = endlist - beglist; |
1788 | #ifndef PACKED_IS_OCTETS | |
1789 | pat = next_symbol(pat, patend); | |
1790 | if (pat < patend && *pat == 'U' && !flags) | |
1791 | SvUTF8_on(cat); | |
1792 | #endif | |
1793 | while ((pat = next_symbol(pat, patend)) < patend) { | |
a6ec74c1 | 1794 | SV *lengthcode = Nullsv; |
18529408 | 1795 | #define NEXTFROM ( lengthcode ? lengthcode : items-- > 0 ? *beglist++ : &PL_sv_no) |
a6ec74c1 JH |
1796 | datumtype = *pat++ & 0xFF; |
1797 | #ifdef PERL_NATINT_PACK | |
1798 | natint = 0; | |
1799 | #endif | |
a6ec74c1 | 1800 | if (*pat == '!') { |
62f95557 | 1801 | static const char natstr[] = "sSiIlLxX"; |
a6ec74c1 JH |
1802 | |
1803 | if (strchr(natstr, datumtype)) { | |
62f95557 IZ |
1804 | if (datumtype == 'x' || datumtype == 'X') { |
1805 | datumtype |= TYPE_IS_SHRIEKING; | |
1806 | } else { /* XXXX Should be redone similarly! */ | |
a6ec74c1 | 1807 | #ifdef PERL_NATINT_PACK |
62f95557 | 1808 | natint = 1; |
a6ec74c1 | 1809 | #endif |
62f95557 | 1810 | } |
a6ec74c1 JH |
1811 | pat++; |
1812 | } | |
1813 | else | |
518eff30 | 1814 | Perl_croak(aTHX_ "'!' allowed only after types %s", natstr); |
a6ec74c1 | 1815 | } |
18529408 IZ |
1816 | len = find_count(&pat, patend, &star); |
1817 | if (star > 0) /* Count is '*' */ | |
a6ec74c1 | 1818 | len = strchr("@Xxu", datumtype) ? 0 : items; |
18529408 | 1819 | else if (star < 0) /* Default len */ |
a6ec74c1 | 1820 | len = 1; |
18529408 | 1821 | if (*pat == '/') { /* doing lookahead how... */ |
a6ec74c1 JH |
1822 | ++pat; |
1823 | if ((*pat != 'a' && *pat != 'A' && *pat != 'Z') || pat[1] != '*') | |
518eff30 | 1824 | Perl_croak(aTHX_ "/ must be followed by a*, A* or Z*"); |
a6ec74c1 | 1825 | lengthcode = sv_2mortal(newSViv(sv_len(items > 0 |
18529408 | 1826 | ? *beglist : &PL_sv_no) |
a6ec74c1 JH |
1827 | + (*pat == 'Z' ? 1 : 0))); |
1828 | } | |
1829 | switch(datumtype) { | |
1830 | default: | |
518eff30 | 1831 | Perl_croak(aTHX_ "Invalid type in pack: '%c'", (int)datumtype); |
a6ec74c1 JH |
1832 | case ',': /* grandfather in commas but with a warning */ |
1833 | if (commas++ == 0 && ckWARN(WARN_PACK)) | |
9014280d | 1834 | Perl_warner(aTHX_ packWARN(WARN_PACK), |
a6ec74c1 JH |
1835 | "Invalid type in pack: '%c'", (int)datumtype); |
1836 | break; | |
1837 | case '%': | |
518eff30 | 1838 | Perl_croak(aTHX_ "%% may only be used in unpack"); |
a6ec74c1 JH |
1839 | case '@': |
1840 | len -= SvCUR(cat); | |
1841 | if (len > 0) | |
1842 | goto grow; | |
1843 | len = -len; | |
1844 | if (len > 0) | |
1845 | goto shrink; | |
1846 | break; | |
18529408 IZ |
1847 | case '(': |
1848 | { | |
1849 | char *beg = pat; | |
1850 | SV **savebeglist = beglist; /* beglist de-register-ed */ | |
1851 | ||
1852 | if (star >= 0) | |
518eff30 | 1853 | Perl_croak(aTHX_ "()-group starts with a count"); |
18529408 IZ |
1854 | aptr = group_end(beg, patend, ')'); |
1855 | pat = aptr + 1; | |
1856 | if (star != -2) { | |
1857 | len = find_count(&pat, patend, &star); | |
1858 | if (star < 0) /* No count */ | |
1859 | len = 1; | |
1860 | else if (star > 0) /* Star */ | |
1861 | len = items; /* long enough? */ | |
1862 | } | |
1863 | while (len--) { | |
1864 | pack_cat(cat, beg, aptr, savebeglist, endlist, | |
1865 | &savebeglist, PACK_CHILD); | |
1866 | if (star > 0 && savebeglist == endlist) | |
1867 | break; /* No way to continue */ | |
1868 | } | |
1869 | beglist = savebeglist; | |
1870 | break; | |
1871 | } | |
62f95557 IZ |
1872 | case 'X' | TYPE_IS_SHRIEKING: |
1873 | if (!len) /* Avoid division by 0 */ | |
1874 | len = 1; | |
1875 | len = (SvCUR(cat)) % len; | |
1876 | /* FALL THROUGH */ | |
a6ec74c1 JH |
1877 | case 'X': |
1878 | shrink: | |
eb160463 | 1879 | if ((I32)SvCUR(cat) < len) |
518eff30 | 1880 | Perl_croak(aTHX_ "X outside of string"); |
a6ec74c1 JH |
1881 | SvCUR(cat) -= len; |
1882 | *SvEND(cat) = '\0'; | |
1883 | break; | |
62f95557 IZ |
1884 | case 'x' | TYPE_IS_SHRIEKING: |
1885 | if (!len) /* Avoid division by 0 */ | |
1886 | len = 1; | |
1887 | aint = (SvCUR(cat)) % len; | |
1888 | if (aint) /* Other portable ways? */ | |
1889 | len = len - aint; | |
1890 | else | |
1891 | len = 0; | |
1892 | /* FALL THROUGH */ | |
a6ec74c1 JH |
1893 | case 'x': |
1894 | grow: | |
1895 | while (len >= 10) { | |
1896 | sv_catpvn(cat, null10, 10); | |
1897 | len -= 10; | |
1898 | } | |
1899 | sv_catpvn(cat, null10, len); | |
1900 | break; | |
1901 | case 'A': | |
1902 | case 'Z': | |
1903 | case 'a': | |
1904 | fromstr = NEXTFROM; | |
1905 | aptr = SvPV(fromstr, fromlen); | |
18529408 | 1906 | if (star > 0) { /* -2 after '/' */ |
a6ec74c1 JH |
1907 | len = fromlen; |
1908 | if (datumtype == 'Z') | |
1909 | ++len; | |
1910 | } | |
eb160463 | 1911 | if ((I32)fromlen >= len) { |
a6ec74c1 JH |
1912 | sv_catpvn(cat, aptr, len); |
1913 | if (datumtype == 'Z') | |
1914 | *(SvEND(cat)-1) = '\0'; | |
1915 | } | |
1916 | else { | |
1917 | sv_catpvn(cat, aptr, fromlen); | |
1918 | len -= fromlen; | |
1919 | if (datumtype == 'A') { | |
1920 | while (len >= 10) { | |
1921 | sv_catpvn(cat, space10, 10); | |
1922 | len -= 10; | |
1923 | } | |
1924 | sv_catpvn(cat, space10, len); | |
1925 | } | |
1926 | else { | |
1927 | while (len >= 10) { | |
1928 | sv_catpvn(cat, null10, 10); | |
1929 | len -= 10; | |
1930 | } | |
1931 | sv_catpvn(cat, null10, len); | |
1932 | } | |
1933 | } | |
1934 | break; | |
1935 | case 'B': | |
1936 | case 'b': | |
1937 | { | |
1938 | register char *str; | |
1939 | I32 saveitems; | |
1940 | ||
1941 | fromstr = NEXTFROM; | |
1942 | saveitems = items; | |
1943 | str = SvPV(fromstr, fromlen); | |
18529408 | 1944 | if (star > 0) |
a6ec74c1 JH |
1945 | len = fromlen; |
1946 | aint = SvCUR(cat); | |
1947 | SvCUR(cat) += (len+7)/8; | |
1948 | SvGROW(cat, SvCUR(cat) + 1); | |
1949 | aptr = SvPVX(cat) + aint; | |
eb160463 | 1950 | if (len > (I32)fromlen) |
a6ec74c1 JH |
1951 | len = fromlen; |
1952 | aint = len; | |
1953 | items = 0; | |
1954 | if (datumtype == 'B') { | |
1955 | for (len = 0; len++ < aint;) { | |
1956 | items |= *str++ & 1; | |
1957 | if (len & 7) | |
1958 | items <<= 1; | |
1959 | else { | |
1960 | *aptr++ = items & 0xff; | |
1961 | items = 0; | |
1962 | } | |
1963 | } | |
1964 | } | |
1965 | else { | |
1966 | for (len = 0; len++ < aint;) { | |
1967 | if (*str++ & 1) | |
1968 | items |= 128; | |
1969 | if (len & 7) | |
1970 | items >>= 1; | |
1971 | else { | |
1972 | *aptr++ = items & 0xff; | |
1973 | items = 0; | |
1974 | } | |
1975 | } | |
1976 | } | |
1977 | if (aint & 7) { | |
1978 | if (datumtype == 'B') | |
1979 | items <<= 7 - (aint & 7); | |
1980 | else | |
1981 | items >>= 7 - (aint & 7); | |
1982 | *aptr++ = items & 0xff; | |
1983 | } | |
1984 | str = SvPVX(cat) + SvCUR(cat); | |
1985 | while (aptr <= str) | |
1986 | *aptr++ = '\0'; | |
1987 | ||
1988 | items = saveitems; | |
1989 | } | |
1990 | break; | |
1991 | case 'H': | |
1992 | case 'h': | |
1993 | { | |
1994 | register char *str; | |
1995 | I32 saveitems; | |
1996 | ||
1997 | fromstr = NEXTFROM; | |
1998 | saveitems = items; | |
1999 | str = SvPV(fromstr, fromlen); | |
18529408 | 2000 | if (star > 0) |
a6ec74c1 JH |
2001 | len = fromlen; |
2002 | aint = SvCUR(cat); | |
2003 | SvCUR(cat) += (len+1)/2; | |
2004 | SvGROW(cat, SvCUR(cat) + 1); | |
2005 | aptr = SvPVX(cat) + aint; | |
eb160463 | 2006 | if (len > (I32)fromlen) |
a6ec74c1 JH |
2007 | len = fromlen; |
2008 | aint = len; | |
2009 | items = 0; | |
2010 | if (datumtype == 'H') { | |
2011 | for (len = 0; len++ < aint;) { | |
2012 | if (isALPHA(*str)) | |
2013 | items |= ((*str++ & 15) + 9) & 15; | |
2014 | else | |
2015 | items |= *str++ & 15; | |
2016 | if (len & 1) | |
2017 | items <<= 4; | |
2018 | else { | |
2019 | *aptr++ = items & 0xff; | |
2020 | items = 0; | |
2021 | } | |
2022 | } | |
2023 | } | |
2024 | else { | |
2025 | for (len = 0; len++ < aint;) { | |
2026 | if (isALPHA(*str)) | |
2027 | items |= (((*str++ & 15) + 9) & 15) << 4; | |
2028 | else | |
2029 | items |= (*str++ & 15) << 4; | |
2030 | if (len & 1) | |
2031 | items >>= 4; | |
2032 | else { | |
2033 | *aptr++ = items & 0xff; | |
2034 | items = 0; | |
2035 | } | |
2036 | } | |
2037 | } | |
2038 | if (aint & 1) | |
2039 | *aptr++ = items & 0xff; | |
2040 | str = SvPVX(cat) + SvCUR(cat); | |
2041 | while (aptr <= str) | |
2042 | *aptr++ = '\0'; | |
2043 | ||
2044 | items = saveitems; | |
2045 | } | |
2046 | break; | |
2047 | case 'C': | |
2048 | case 'c': | |
2049 | while (len-- > 0) { | |
2050 | fromstr = NEXTFROM; | |
2051 | switch (datumtype) { | |
2052 | case 'C': | |
2053 | aint = SvIV(fromstr); | |
2054 | if ((aint < 0 || aint > 255) && | |
2055 | ckWARN(WARN_PACK)) | |
9014280d | 2056 | Perl_warner(aTHX_ packWARN(WARN_PACK), |
a6ec74c1 JH |
2057 | "Character in \"C\" format wrapped"); |
2058 | achar = aint & 255; | |
2059 | sv_catpvn(cat, &achar, sizeof(char)); | |
2060 | break; | |
2061 | case 'c': | |
2062 | aint = SvIV(fromstr); | |
2063 | if ((aint < -128 || aint > 127) && | |
2064 | ckWARN(WARN_PACK)) | |
9014280d | 2065 | Perl_warner(aTHX_ packWARN(WARN_PACK), |
a6ec74c1 JH |
2066 | "Character in \"c\" format wrapped"); |
2067 | achar = aint & 255; | |
2068 | sv_catpvn(cat, &achar, sizeof(char)); | |
2069 | break; | |
2070 | } | |
2071 | } | |
2072 | break; | |
2073 | case 'U': | |
2074 | while (len-- > 0) { | |
2075 | fromstr = NEXTFROM; | |
e87322b2 | 2076 | auint = UNI_TO_NATIVE(SvUV(fromstr)); |
a6ec74c1 | 2077 | SvGROW(cat, SvCUR(cat) + UTF8_MAXLEN + 1); |
52ea3e69 JH |
2078 | SvCUR_set(cat, |
2079 | (char*)uvchr_to_utf8_flags((U8*)SvEND(cat), | |
2080 | auint, | |
2081 | ckWARN(WARN_UTF8) ? | |
2082 | 0 : UNICODE_ALLOW_ANY) | |
2083 | - SvPVX(cat)); | |
a6ec74c1 JH |
2084 | } |
2085 | *SvEND(cat) = '\0'; | |
2086 | break; | |
2087 | /* Float and double added by gnb@melba.bby.oz.au 22/11/89 */ | |
2088 | case 'f': | |
a6ec74c1 JH |
2089 | while (len-- > 0) { |
2090 | fromstr = NEXTFROM; | |
5cdb9e01 PG |
2091 | #ifdef __VOS__ |
2092 | /* VOS does not automatically map a floating-point overflow | |
2093 | during conversion from double to float into infinity, so we | |
2094 | do it by hand. This code should either be generalized for | |
2095 | any OS that needs it, or removed if and when VOS implements | |
2096 | posix-976 (suggestion to support mapping to infinity). | |
2097 | Paul.Green@stratus.com 02-04-02. */ | |
2098 | if (SvNV(fromstr) > FLT_MAX) | |
2099 | afloat = _float_constants[0]; /* single prec. inf. */ | |
2100 | else if (SvNV(fromstr) < -FLT_MAX) | |
2101 | afloat = _float_constants[0]; /* single prec. inf. */ | |
2102 | else afloat = (float)SvNV(fromstr); | |
2103 | #else | |
baf3cf9c CB |
2104 | # if defined(VMS) && !defined(__IEEE_FP) |
2105 | /* IEEE fp overflow shenanigans are unavailable on VAX and optional | |
2106 | * on Alpha; fake it if we don't have them. | |
2107 | */ | |
2108 | if (SvNV(fromstr) > FLT_MAX) | |
2109 | afloat = FLT_MAX; | |
2110 | else if (SvNV(fromstr) < -FLT_MAX) | |
2111 | afloat = -FLT_MAX; | |
2112 | else afloat = (float)SvNV(fromstr); | |
2113 | # else | |
a6ec74c1 | 2114 | afloat = (float)SvNV(fromstr); |
baf3cf9c | 2115 | # endif |
5cdb9e01 | 2116 | #endif |
a6ec74c1 JH |
2117 | sv_catpvn(cat, (char *)&afloat, sizeof (float)); |
2118 | } | |
2119 | break; | |
2120 | case 'd': | |
a6ec74c1 JH |
2121 | while (len-- > 0) { |
2122 | fromstr = NEXTFROM; | |
5cdb9e01 PG |
2123 | #ifdef __VOS__ |
2124 | /* VOS does not automatically map a floating-point overflow | |
2125 | during conversion from long double to double into infinity, | |
2126 | so we do it by hand. This code should either be generalized | |
2127 | for any OS that needs it, or removed if and when VOS | |
2128 | implements posix-976 (suggestion to support mapping to | |
2129 | infinity). Paul.Green@stratus.com 02-04-02. */ | |
2130 | if (SvNV(fromstr) > DBL_MAX) | |
2131 | adouble = _double_constants[0]; /* double prec. inf. */ | |
2132 | else if (SvNV(fromstr) < -DBL_MAX) | |
2133 | adouble = _double_constants[0]; /* double prec. inf. */ | |
2134 | else adouble = (double)SvNV(fromstr); | |
2135 | #else | |
baf3cf9c CB |
2136 | # if defined(VMS) && !defined(__IEEE_FP) |
2137 | /* IEEE fp overflow shenanigans are unavailable on VAX and optional | |
2138 | * on Alpha; fake it if we don't have them. | |
2139 | */ | |
2140 | if (SvNV(fromstr) > DBL_MAX) | |
2141 | adouble = DBL_MAX; | |
2142 | else if (SvNV(fromstr) < -DBL_MAX) | |
2143 | adouble = -DBL_MAX; | |
2144 | else adouble = (double)SvNV(fromstr); | |
2145 | # else | |
a6ec74c1 | 2146 | adouble = (double)SvNV(fromstr); |
baf3cf9c | 2147 | # endif |
5cdb9e01 | 2148 | #endif |
a6ec74c1 JH |
2149 | sv_catpvn(cat, (char *)&adouble, sizeof (double)); |
2150 | } | |
2151 | break; | |
92d41999 JH |
2152 | case 'F': |
2153 | while (len-- > 0) { | |
2154 | fromstr = NEXTFROM; | |
2155 | anv = SvNV(fromstr); | |
2156 | sv_catpvn(cat, (char *)&anv, NVSIZE); | |
2157 | } | |
2158 | break; | |
2159 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) | |
2160 | case 'D': | |
2161 | while (len-- > 0) { | |
2162 | fromstr = NEXTFROM; | |
2163 | aldouble = (long double)SvNV(fromstr); | |
2164 | sv_catpvn(cat, (char *)&aldouble, LONG_DOUBLESIZE); | |
2165 | } | |
2166 | break; | |
2167 | #endif | |
a6ec74c1 JH |
2168 | case 'n': |
2169 | while (len-- > 0) { | |
2170 | fromstr = NEXTFROM; | |
2171 | ashort = (I16)SvIV(fromstr); | |
2172 | #ifdef HAS_HTONS | |
2173 | ashort = PerlSock_htons(ashort); | |
2174 | #endif | |
2175 | CAT16(cat, &ashort); | |
2176 | } | |
2177 | break; | |
2178 | case 'v': | |
2179 | while (len-- > 0) { | |
2180 | fromstr = NEXTFROM; | |
2181 | ashort = (I16)SvIV(fromstr); | |
2182 | #ifdef HAS_HTOVS | |
2183 | ashort = htovs(ashort); | |
2184 | #endif | |
2185 | CAT16(cat, &ashort); | |
2186 | } | |
2187 | break; | |
2188 | case 'S': | |
2189 | #if SHORTSIZE != SIZE16 | |
2190 | if (natint) { | |
2191 | unsigned short aushort; | |
2192 | ||
2193 | while (len-- > 0) { | |
2194 | fromstr = NEXTFROM; | |
2195 | aushort = SvUV(fromstr); | |
2196 | sv_catpvn(cat, (char *)&aushort, sizeof(unsigned short)); | |
2197 | } | |
2198 | } | |
2199 | else | |
2200 | #endif | |
2201 | { | |
2202 | U16 aushort; | |
2203 | ||
2204 | while (len-- > 0) { | |
2205 | fromstr = NEXTFROM; | |
2206 | aushort = (U16)SvUV(fromstr); | |
2207 | CAT16(cat, &aushort); | |
2208 | } | |
2209 | ||
2210 | } | |
2211 | break; | |
2212 | case 's': | |
2213 | #if SHORTSIZE != SIZE16 | |
2214 | if (natint) { | |
2215 | short ashort; | |
2216 | ||
2217 | while (len-- > 0) { | |
2218 | fromstr = NEXTFROM; | |
2219 | ashort = SvIV(fromstr); | |
2220 | sv_catpvn(cat, (char *)&ashort, sizeof(short)); | |
2221 | } | |
2222 | } | |
2223 | else | |
2224 | #endif | |
2225 | { | |
2226 | while (len-- > 0) { | |
2227 | fromstr = NEXTFROM; | |
2228 | ashort = (I16)SvIV(fromstr); | |
2229 | CAT16(cat, &ashort); | |
2230 | } | |
2231 | } | |
2232 | break; | |
2233 | case 'I': | |
2234 | while (len-- > 0) { | |
2235 | fromstr = NEXTFROM; | |
2236 | auint = SvUV(fromstr); | |
2237 | sv_catpvn(cat, (char*)&auint, sizeof(unsigned int)); | |
2238 | } | |
2239 | break; | |
92d41999 JH |
2240 | case 'j': |
2241 | while (len-- > 0) { | |
2242 | fromstr = NEXTFROM; | |
2243 | aiv = SvIV(fromstr); | |
2244 | sv_catpvn(cat, (char*)&aiv, IVSIZE); | |
2245 | } | |
2246 | break; | |
2247 | case 'J': | |
2248 | while (len-- > 0) { | |
2249 | fromstr = NEXTFROM; | |
2250 | auv = SvUV(fromstr); | |
2251 | sv_catpvn(cat, (char*)&auv, UVSIZE); | |
2252 | } | |
2253 | break; | |
a6ec74c1 JH |
2254 | case 'w': |
2255 | while (len-- > 0) { | |
2256 | fromstr = NEXTFROM; | |
15e9f109 | 2257 | anv = SvNV(fromstr); |
a6ec74c1 | 2258 | |
15e9f109 | 2259 | if (anv < 0) |
518eff30 | 2260 | Perl_croak(aTHX_ "Cannot compress negative numbers"); |
a6ec74c1 | 2261 | |
196b62db NC |
2262 | /* 0xFFFFFFFFFFFFFFFF may cast to 18446744073709551616.0, |
2263 | which is == UV_MAX_P1. IOK is fine (instead of UV_only), as | |
2264 | any negative IVs will have already been got by the croak() | |
2265 | above. IOK is untrue for fractions, so we test them | |
2266 | against UV_MAX_P1. */ | |
15e9f109 | 2267 | if (SvIOK(fromstr) || anv < UV_MAX_P1) |
a6ec74c1 | 2268 | { |
7c1b502b | 2269 | char buf[(sizeof(UV)*8)/7+1]; |
a6ec74c1 | 2270 | char *in = buf + sizeof(buf); |
196b62db | 2271 | UV auv = SvUV(fromstr); |
a6ec74c1 JH |
2272 | |
2273 | do { | |
eb160463 | 2274 | *--in = (char)((auv & 0x7f) | 0x80); |
a6ec74c1 JH |
2275 | auv >>= 7; |
2276 | } while (auv); | |
2277 | buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */ | |
2278 | sv_catpvn(cat, in, (buf + sizeof(buf)) - in); | |
2279 | } | |
2280 | else if (SvPOKp(fromstr)) { /* decimal string arithmetics */ | |
2281 | char *from, *result, *in; | |
2282 | SV *norm; | |
2283 | STRLEN len; | |
2284 | bool done; | |
2285 | ||
2286 | /* Copy string and check for compliance */ | |
2287 | from = SvPV(fromstr, len); | |
2288 | if ((norm = is_an_int(from, len)) == NULL) | |
518eff30 | 2289 | Perl_croak(aTHX_ "can compress only unsigned integer"); |
a6ec74c1 JH |
2290 | |
2291 | New('w', result, len, char); | |
2292 | in = result + len; | |
2293 | done = FALSE; | |
2294 | while (!done) | |
2295 | *--in = div128(norm, &done) | 0x80; | |
2296 | result[len - 1] &= 0x7F; /* clear continue bit */ | |
2297 | sv_catpvn(cat, in, (result + len) - in); | |
2298 | Safefree(result); | |
2299 | SvREFCNT_dec(norm); /* free norm */ | |
2300 | } | |
2301 | else if (SvNOKp(fromstr)) { | |
15e9f109 | 2302 | char buf[sizeof(NV) * 2]; /* 8/7 <= 2 */ |
a6ec74c1 JH |
2303 | char *in = buf + sizeof(buf); |
2304 | ||
15e9f109 | 2305 | anv = Perl_floor(anv); |
a6ec74c1 | 2306 | do { |
15e9f109 NC |
2307 | NV next = Perl_floor(anv / 128); |
2308 | *--in = (unsigned char)(anv - (next * 128)) | 0x80; | |
a6ec74c1 | 2309 | if (in <= buf) /* this cannot happen ;-) */ |
518eff30 | 2310 | Perl_croak(aTHX_ "Cannot compress integer"); |
15e9f109 NC |
2311 | anv = next; |
2312 | } while (anv > 0); | |
a6ec74c1 JH |
2313 | buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */ |
2314 | sv_catpvn(cat, in, (buf + sizeof(buf)) - in); | |
2315 | } | |
735b914b JH |
2316 | else { |
2317 | char *from, *result, *in; | |
2318 | SV *norm; | |
2319 | STRLEN len; | |
2320 | bool done; | |
2321 | ||
2322 | /* Copy string and check for compliance */ | |
2323 | from = SvPV(fromstr, len); | |
2324 | if ((norm = is_an_int(from, len)) == NULL) | |
518eff30 | 2325 | Perl_croak(aTHX_ "can compress only unsigned integer"); |
735b914b JH |
2326 | |
2327 | New('w', result, len, char); | |
2328 | in = result + len; | |
2329 | done = FALSE; | |
2330 | while (!done) | |
2331 | *--in = div128(norm, &done) | 0x80; | |
2332 | result[len - 1] &= 0x7F; /* clear continue bit */ | |
2333 | sv_catpvn(cat, in, (result + len) - in); | |
2334 | Safefree(result); | |
2335 | SvREFCNT_dec(norm); /* free norm */ | |
2336 | } | |
a6ec74c1 JH |
2337 | } |
2338 | break; | |
2339 | case 'i': | |
2340 | while (len-- > 0) { | |
2341 | fromstr = NEXTFROM; | |
2342 | aint = SvIV(fromstr); | |
2343 | sv_catpvn(cat, (char*)&aint, sizeof(int)); | |
2344 | } | |
2345 | break; | |
2346 | case 'N': | |
2347 | while (len-- > 0) { | |
2348 | fromstr = NEXTFROM; | |
2349 | aulong = SvUV(fromstr); | |
2350 | #ifdef HAS_HTONL | |
2351 | aulong = PerlSock_htonl(aulong); | |
2352 | #endif | |
2353 | CAT32(cat, &aulong); | |
2354 | } | |
2355 | break; | |
2356 | case 'V': | |
2357 | while (len-- > 0) { | |
2358 | fromstr = NEXTFROM; | |
2359 | aulong = SvUV(fromstr); | |
2360 | #ifdef HAS_HTOVL | |
2361 | aulong = htovl(aulong); | |
2362 | #endif | |
2363 | CAT32(cat, &aulong); | |
2364 | } | |
2365 | break; | |
2366 | case 'L': | |
2367 | #if LONGSIZE != SIZE32 | |
2368 | if (natint) { | |
2369 | unsigned long aulong; | |
2370 | ||
2371 | while (len-- > 0) { | |
2372 | fromstr = NEXTFROM; | |
2373 | aulong = SvUV(fromstr); | |
2374 | sv_catpvn(cat, (char *)&aulong, sizeof(unsigned long)); | |
2375 | } | |
2376 | } | |
2377 | else | |
2378 | #endif | |
2379 | { | |
2380 | while (len-- > 0) { | |
2381 | fromstr = NEXTFROM; | |
2382 | aulong = SvUV(fromstr); | |
2383 | CAT32(cat, &aulong); | |
2384 | } | |
2385 | } | |
2386 | break; | |
2387 | case 'l': | |
2388 | #if LONGSIZE != SIZE32 | |
2389 | if (natint) { | |
2390 | long along; | |
2391 | ||
2392 | while (len-- > 0) { | |
2393 | fromstr = NEXTFROM; | |
2394 | along = SvIV(fromstr); | |
2395 | sv_catpvn(cat, (char *)&along, sizeof(long)); | |
2396 | } | |
2397 | } | |
2398 | else | |
2399 | #endif | |
2400 | { | |
2401 | while (len-- > 0) { | |
2402 | fromstr = NEXTFROM; | |
2403 | along = SvIV(fromstr); | |
2404 | CAT32(cat, &along); | |
2405 | } | |
2406 | } | |
2407 | break; | |
2408 | #ifdef HAS_QUAD | |
2409 | case 'Q': | |
2410 | while (len-- > 0) { | |
2411 | fromstr = NEXTFROM; | |
2412 | auquad = (Uquad_t)SvUV(fromstr); | |
2413 | sv_catpvn(cat, (char*)&auquad, sizeof(Uquad_t)); | |
2414 | } | |
2415 | break; | |
2416 | case 'q': | |
2417 | while (len-- > 0) { | |
2418 | fromstr = NEXTFROM; | |
2419 | aquad = (Quad_t)SvIV(fromstr); | |
2420 | sv_catpvn(cat, (char*)&aquad, sizeof(Quad_t)); | |
2421 | } | |
2422 | break; | |
2423 | #endif | |
2424 | case 'P': | |
2425 | len = 1; /* assume SV is correct length */ | |
2426 | /* FALL THROUGH */ | |
2427 | case 'p': | |
2428 | while (len-- > 0) { | |
2429 | fromstr = NEXTFROM; | |
2430 | if (fromstr == &PL_sv_undef) | |
2431 | aptr = NULL; | |
2432 | else { | |
2433 | STRLEN n_a; | |
2434 | /* XXX better yet, could spirit away the string to | |
2435 | * a safe spot and hang on to it until the result | |
2436 | * of pack() (and all copies of the result) are | |
2437 | * gone. | |
2438 | */ | |
2439 | if (ckWARN(WARN_PACK) && (SvTEMP(fromstr) | |
2440 | || (SvPADTMP(fromstr) | |
2441 | && !SvREADONLY(fromstr)))) | |
2442 | { | |
9014280d | 2443 | Perl_warner(aTHX_ packWARN(WARN_PACK), |
a6ec74c1 JH |
2444 | "Attempt to pack pointer to temporary value"); |
2445 | } | |
2446 | if (SvPOK(fromstr) || SvNIOK(fromstr)) | |
2447 | aptr = SvPV(fromstr,n_a); | |
2448 | else | |
2449 | aptr = SvPV_force(fromstr,n_a); | |
2450 | } | |
2451 | sv_catpvn(cat, (char*)&aptr, sizeof(char*)); | |
2452 | } | |
2453 | break; | |
2454 | case 'u': | |
2455 | fromstr = NEXTFROM; | |
2456 | aptr = SvPV(fromstr, fromlen); | |
2457 | SvGROW(cat, fromlen * 4 / 3); | |
19c9db5e | 2458 | if (len <= 2) |
a6ec74c1 JH |
2459 | len = 45; |
2460 | else | |
2461 | len = len / 3 * 3; | |
2462 | while (fromlen > 0) { | |
2463 | I32 todo; | |
2464 | ||
eb160463 | 2465 | if ((I32)fromlen > len) |
a6ec74c1 JH |
2466 | todo = len; |
2467 | else | |
2468 | todo = fromlen; | |
2469 | doencodes(cat, aptr, todo); | |
2470 | fromlen -= todo; | |
2471 | aptr += todo; | |
2472 | } | |
2473 | break; | |
2474 | } | |
2475 | } | |
18529408 IZ |
2476 | if (next_in_list) |
2477 | *next_in_list = beglist; | |
2478 | } | |
2479 | #undef NEXTFROM | |
2480 | ||
2481 | ||
2482 | PP(pp_pack) | |
2483 | { | |
2484 | dSP; dMARK; dORIGMARK; dTARGET; | |
2485 | register SV *cat = TARG; | |
2486 | STRLEN fromlen; | |
2487 | register char *pat = SvPVx(*++MARK, fromlen); | |
2488 | register char *patend = pat + fromlen; | |
2489 | ||
2490 | MARK++; | |
2491 | sv_setpvn(cat, "", 0); | |
2492 | ||
2493 | pack_cat(cat, pat, patend, MARK, SP + 1, NULL, 0); | |
2494 | ||
a6ec74c1 JH |
2495 | SvSETMAGIC(cat); |
2496 | SP = ORIGMARK; | |
2497 | PUSHs(cat); | |
2498 | RETURN; | |
2499 | } | |
a6ec74c1 | 2500 |