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a6ec74c1 JH |
1 | /* pp_pack.c |
2 | * | |
3 | * Copyright (c) 1991-2001, Larry Wall | |
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 | ||
10 | #include "EXTERN.h" | |
11 | #define PERL_IN_PP_PACK_C | |
12 | #include "perl.h" | |
13 | ||
14 | /* | |
15 | * The compiler on Concurrent CX/UX systems has a subtle bug which only | |
16 | * seems to show up when compiling pp.c - it generates the wrong double | |
17 | * precision constant value for (double)UV_MAX when used inline in the body | |
18 | * of the code below, so this makes a static variable up front (which the | |
19 | * compiler seems to get correct) and uses it in place of UV_MAX below. | |
20 | */ | |
21 | #ifdef CXUX_BROKEN_CONSTANT_CONVERT | |
22 | static double UV_MAX_cxux = ((double)UV_MAX); | |
23 | #endif | |
24 | ||
25 | /* | |
26 | * Offset for integer pack/unpack. | |
27 | * | |
28 | * On architectures where I16 and I32 aren't really 16 and 32 bits, | |
29 | * which for now are all Crays, pack and unpack have to play games. | |
30 | */ | |
31 | ||
32 | /* | |
33 | * These values are required for portability of pack() output. | |
34 | * If they're not right on your machine, then pack() and unpack() | |
35 | * wouldn't work right anyway; you'll need to apply the Cray hack. | |
36 | * (I'd like to check them with #if, but you can't use sizeof() in | |
37 | * the preprocessor.) --??? | |
38 | */ | |
39 | /* | |
40 | The appropriate SHORTSIZE, INTSIZE, LONGSIZE, and LONGLONGSIZE | |
41 | defines are now in config.h. --Andy Dougherty April 1998 | |
42 | */ | |
43 | #define SIZE16 2 | |
44 | #define SIZE32 4 | |
45 | ||
46 | /* CROSSCOMPILE and MULTIARCH are going to affect pp_pack() and pp_unpack(). | |
47 | --jhi Feb 1999 */ | |
48 | ||
49 | #if SHORTSIZE != SIZE16 || LONGSIZE != SIZE32 | |
50 | # define PERL_NATINT_PACK | |
51 | #endif | |
52 | ||
53 | #if LONGSIZE > 4 && defined(_CRAY) | |
54 | # if BYTEORDER == 0x12345678 | |
55 | # define OFF16(p) (char*)(p) | |
56 | # define OFF32(p) (char*)(p) | |
57 | # else | |
58 | # if BYTEORDER == 0x87654321 | |
59 | # define OFF16(p) ((char*)(p) + (sizeof(U16) - SIZE16)) | |
60 | # define OFF32(p) ((char*)(p) + (sizeof(U32) - SIZE32)) | |
61 | # else | |
62 | }}}} bad cray byte order | |
63 | # endif | |
64 | # endif | |
65 | # define COPY16(s,p) (*(p) = 0, Copy(s, OFF16(p), SIZE16, char)) | |
66 | # define COPY32(s,p) (*(p) = 0, Copy(s, OFF32(p), SIZE32, char)) | |
67 | # define COPYNN(s,p,n) (*(p) = 0, Copy(s, (char *)(p), n, char)) | |
68 | # define CAT16(sv,p) sv_catpvn(sv, OFF16(p), SIZE16) | |
69 | # define CAT32(sv,p) sv_catpvn(sv, OFF32(p), SIZE32) | |
70 | #else | |
71 | # define COPY16(s,p) Copy(s, p, SIZE16, char) | |
72 | # define COPY32(s,p) Copy(s, p, SIZE32, char) | |
73 | # define COPYNN(s,p,n) Copy(s, (char *)(p), n, char) | |
74 | # define CAT16(sv,p) sv_catpvn(sv, (char*)(p), SIZE16) | |
75 | # define CAT32(sv,p) sv_catpvn(sv, (char*)(p), SIZE32) | |
76 | #endif | |
77 | ||
78 | STATIC SV * | |
79 | S_mul128(pTHX_ SV *sv, U8 m) | |
80 | { | |
81 | STRLEN len; | |
82 | char *s = SvPV(sv, len); | |
83 | char *t; | |
84 | U32 i = 0; | |
85 | ||
86 | if (!strnEQ(s, "0000", 4)) { /* need to grow sv */ | |
87 | SV *tmpNew = newSVpvn("0000000000", 10); | |
88 | ||
89 | sv_catsv(tmpNew, sv); | |
90 | SvREFCNT_dec(sv); /* free old sv */ | |
91 | sv = tmpNew; | |
92 | s = SvPV(sv, len); | |
93 | } | |
94 | t = s + len - 1; | |
95 | while (!*t) /* trailing '\0'? */ | |
96 | t--; | |
97 | while (t > s) { | |
98 | i = ((*t - '0') << 7) + m; | |
99 | *(t--) = '0' + (i % 10); | |
100 | m = i / 10; | |
101 | } | |
102 | return (sv); | |
103 | } | |
104 | ||
105 | /* Explosives and implosives. */ | |
106 | ||
107 | #if 'I' == 73 && 'J' == 74 | |
108 | /* On an ASCII/ISO kind of system */ | |
109 | #define ISUUCHAR(ch) ((ch) >= ' ' && (ch) < 'a') | |
110 | #else | |
111 | /* | |
112 | Some other sort of character set - use memchr() so we don't match | |
113 | the null byte. | |
114 | */ | |
115 | #define ISUUCHAR(ch) (memchr(PL_uuemap, (ch), sizeof(PL_uuemap)-1) || (ch) == ' ') | |
116 | #endif | |
117 | ||
118 | ||
119 | PP(pp_unpack) | |
120 | { | |
121 | dSP; | |
122 | dPOPPOPssrl; | |
123 | I32 start_sp_offset = SP - PL_stack_base; | |
124 | I32 gimme = GIMME_V; | |
125 | SV *sv; | |
126 | STRLEN llen; | |
127 | STRLEN rlen; | |
128 | register char *pat = SvPV(left, llen); | |
129 | #ifdef PACKED_IS_OCTETS | |
130 | /* Packed side is assumed to be octets - so force downgrade if it | |
131 | has been UTF-8 encoded by accident | |
132 | */ | |
133 | register char *s = SvPVbyte(right, rlen); | |
134 | #else | |
135 | register char *s = SvPV(right, rlen); | |
136 | #endif | |
137 | char *strend = s + rlen; | |
138 | char *strbeg = s; | |
139 | register char *patend = pat + llen; | |
140 | I32 datumtype; | |
141 | register I32 len; | |
142 | register I32 bits = 0; | |
143 | register char *str; | |
144 | ||
145 | /* These must not be in registers: */ | |
146 | short ashort; | |
147 | int aint; | |
148 | long along; | |
149 | #ifdef HAS_QUAD | |
150 | Quad_t aquad; | |
151 | #endif | |
152 | U16 aushort; | |
153 | unsigned int auint; | |
154 | U32 aulong; | |
155 | #ifdef HAS_QUAD | |
156 | Uquad_t auquad; | |
157 | #endif | |
158 | char *aptr; | |
159 | float afloat; | |
160 | double adouble; | |
161 | I32 checksum = 0; | |
162 | register U32 culong = 0; | |
163 | NV cdouble = 0.0; | |
164 | int commas = 0; | |
165 | int star; | |
166 | #ifdef PERL_NATINT_PACK | |
167 | int natint; /* native integer */ | |
168 | int unatint; /* unsigned native integer */ | |
169 | #endif | |
170 | ||
171 | if (gimme != G_ARRAY) { /* arrange to do first one only */ | |
172 | /*SUPPRESS 530*/ | |
173 | for (patend = pat; !isALPHA(*patend) || *patend == 'x'; patend++) ; | |
174 | if (strchr("aAZbBhHP", *patend) || *pat == '%') { | |
175 | patend++; | |
176 | while (isDIGIT(*patend) || *patend == '*') | |
177 | patend++; | |
178 | } | |
179 | else | |
180 | patend++; | |
181 | } | |
182 | while (pat < patend) { | |
183 | reparse: | |
184 | datumtype = *pat++ & 0xFF; | |
185 | #ifdef PERL_NATINT_PACK | |
186 | natint = 0; | |
187 | #endif | |
188 | if (isSPACE(datumtype)) | |
189 | continue; | |
190 | if (datumtype == '#') { | |
191 | while (pat < patend && *pat != '\n') | |
192 | pat++; | |
193 | continue; | |
194 | } | |
195 | if (*pat == '!') { | |
196 | char *natstr = "sSiIlL"; | |
197 | ||
198 | if (strchr(natstr, datumtype)) { | |
199 | #ifdef PERL_NATINT_PACK | |
200 | natint = 1; | |
201 | #endif | |
202 | pat++; | |
203 | } | |
204 | else | |
205 | DIE(aTHX_ "'!' allowed only after types %s", natstr); | |
206 | } | |
207 | star = 0; | |
208 | if (pat >= patend) | |
209 | len = 1; | |
210 | else if (*pat == '*') { | |
211 | len = strend - strbeg; /* long enough */ | |
212 | pat++; | |
213 | star = 1; | |
214 | } | |
215 | else if (isDIGIT(*pat)) { | |
216 | len = *pat++ - '0'; | |
217 | while (isDIGIT(*pat)) { | |
218 | len = (len * 10) + (*pat++ - '0'); | |
219 | if (len < 0) | |
220 | DIE(aTHX_ "Repeat count in unpack overflows"); | |
221 | } | |
222 | } | |
223 | else | |
224 | len = (datumtype != '@'); | |
225 | redo_switch: | |
226 | switch(datumtype) { | |
227 | default: | |
228 | DIE(aTHX_ "Invalid type in unpack: '%c'", (int)datumtype); | |
229 | case ',': /* grandfather in commas but with a warning */ | |
230 | if (commas++ == 0 && ckWARN(WARN_UNPACK)) | |
231 | Perl_warner(aTHX_ WARN_UNPACK, | |
232 | "Invalid type in unpack: '%c'", (int)datumtype); | |
233 | break; | |
234 | case '%': | |
235 | if (len == 1 && pat[-1] != '1') | |
236 | len = 16; | |
237 | checksum = len; | |
238 | culong = 0; | |
239 | cdouble = 0; | |
240 | if (pat < patend) | |
241 | goto reparse; | |
242 | break; | |
243 | case '@': | |
244 | if (len > strend - strbeg) | |
245 | DIE(aTHX_ "@ outside of string"); | |
246 | s = strbeg + len; | |
247 | break; | |
248 | case 'X': | |
249 | if (len > s - strbeg) | |
250 | DIE(aTHX_ "X outside of string"); | |
251 | s -= len; | |
252 | break; | |
253 | case 'x': | |
254 | if (len > strend - s) | |
255 | DIE(aTHX_ "x outside of string"); | |
256 | s += len; | |
257 | break; | |
258 | case '/': | |
259 | if (start_sp_offset >= SP - PL_stack_base) | |
260 | DIE(aTHX_ "/ must follow a numeric type"); | |
261 | datumtype = *pat++; | |
262 | if (*pat == '*') | |
263 | pat++; /* ignore '*' for compatibility with pack */ | |
264 | if (isDIGIT(*pat)) | |
265 | DIE(aTHX_ "/ cannot take a count" ); | |
266 | len = POPi; | |
267 | star = 0; | |
268 | goto redo_switch; | |
269 | case 'A': | |
270 | case 'Z': | |
271 | case 'a': | |
272 | if (len > strend - s) | |
273 | len = strend - s; | |
274 | if (checksum) | |
275 | goto uchar_checksum; | |
276 | sv = NEWSV(35, len); | |
277 | sv_setpvn(sv, s, len); | |
278 | s += len; | |
279 | if (datumtype == 'A' || datumtype == 'Z') { | |
280 | aptr = s; /* borrow register */ | |
281 | if (datumtype == 'Z') { /* 'Z' strips stuff after first null */ | |
282 | s = SvPVX(sv); | |
283 | while (*s) | |
284 | s++; | |
285 | } | |
286 | else { /* 'A' strips both nulls and spaces */ | |
287 | s = SvPVX(sv) + len - 1; | |
288 | while (s >= SvPVX(sv) && (!*s || isSPACE(*s))) | |
289 | s--; | |
290 | *++s = '\0'; | |
291 | } | |
292 | SvCUR_set(sv, s - SvPVX(sv)); | |
293 | s = aptr; /* unborrow register */ | |
294 | } | |
295 | XPUSHs(sv_2mortal(sv)); | |
296 | break; | |
297 | case 'B': | |
298 | case 'b': | |
299 | if (star || len > (strend - s) * 8) | |
300 | len = (strend - s) * 8; | |
301 | if (checksum) { | |
302 | if (!PL_bitcount) { | |
303 | Newz(601, PL_bitcount, 256, char); | |
304 | for (bits = 1; bits < 256; bits++) { | |
305 | if (bits & 1) PL_bitcount[bits]++; | |
306 | if (bits & 2) PL_bitcount[bits]++; | |
307 | if (bits & 4) PL_bitcount[bits]++; | |
308 | if (bits & 8) PL_bitcount[bits]++; | |
309 | if (bits & 16) PL_bitcount[bits]++; | |
310 | if (bits & 32) PL_bitcount[bits]++; | |
311 | if (bits & 64) PL_bitcount[bits]++; | |
312 | if (bits & 128) PL_bitcount[bits]++; | |
313 | } | |
314 | } | |
315 | while (len >= 8) { | |
316 | culong += PL_bitcount[*(unsigned char*)s++]; | |
317 | len -= 8; | |
318 | } | |
319 | if (len) { | |
320 | bits = *s; | |
321 | if (datumtype == 'b') { | |
322 | while (len-- > 0) { | |
323 | if (bits & 1) culong++; | |
324 | bits >>= 1; | |
325 | } | |
326 | } | |
327 | else { | |
328 | while (len-- > 0) { | |
329 | if (bits & 128) culong++; | |
330 | bits <<= 1; | |
331 | } | |
332 | } | |
333 | } | |
334 | break; | |
335 | } | |
336 | sv = NEWSV(35, len + 1); | |
337 | SvCUR_set(sv, len); | |
338 | SvPOK_on(sv); | |
339 | str = SvPVX(sv); | |
340 | if (datumtype == 'b') { | |
341 | aint = len; | |
342 | for (len = 0; len < aint; len++) { | |
343 | if (len & 7) /*SUPPRESS 595*/ | |
344 | bits >>= 1; | |
345 | else | |
346 | bits = *s++; | |
347 | *str++ = '0' + (bits & 1); | |
348 | } | |
349 | } | |
350 | else { | |
351 | aint = len; | |
352 | for (len = 0; len < aint; len++) { | |
353 | if (len & 7) | |
354 | bits <<= 1; | |
355 | else | |
356 | bits = *s++; | |
357 | *str++ = '0' + ((bits & 128) != 0); | |
358 | } | |
359 | } | |
360 | *str = '\0'; | |
361 | XPUSHs(sv_2mortal(sv)); | |
362 | break; | |
363 | case 'H': | |
364 | case 'h': | |
365 | if (star || len > (strend - s) * 2) | |
366 | len = (strend - s) * 2; | |
367 | sv = NEWSV(35, len + 1); | |
368 | SvCUR_set(sv, len); | |
369 | SvPOK_on(sv); | |
370 | str = SvPVX(sv); | |
371 | if (datumtype == 'h') { | |
372 | aint = len; | |
373 | for (len = 0; len < aint; len++) { | |
374 | if (len & 1) | |
375 | bits >>= 4; | |
376 | else | |
377 | bits = *s++; | |
378 | *str++ = PL_hexdigit[bits & 15]; | |
379 | } | |
380 | } | |
381 | else { | |
382 | aint = len; | |
383 | for (len = 0; len < aint; len++) { | |
384 | if (len & 1) | |
385 | bits <<= 4; | |
386 | else | |
387 | bits = *s++; | |
388 | *str++ = PL_hexdigit[(bits >> 4) & 15]; | |
389 | } | |
390 | } | |
391 | *str = '\0'; | |
392 | XPUSHs(sv_2mortal(sv)); | |
393 | break; | |
394 | case 'c': | |
395 | if (len > strend - s) | |
396 | len = strend - s; | |
397 | if (checksum) { | |
398 | while (len-- > 0) { | |
399 | aint = *s++; | |
400 | if (aint >= 128) /* fake up signed chars */ | |
401 | aint -= 256; | |
402 | culong += aint; | |
403 | } | |
404 | } | |
405 | else { | |
406 | EXTEND(SP, len); | |
407 | EXTEND_MORTAL(len); | |
408 | while (len-- > 0) { | |
409 | aint = *s++; | |
410 | if (aint >= 128) /* fake up signed chars */ | |
411 | aint -= 256; | |
412 | sv = NEWSV(36, 0); | |
413 | sv_setiv(sv, (IV)aint); | |
414 | PUSHs(sv_2mortal(sv)); | |
415 | } | |
416 | } | |
417 | break; | |
418 | case 'C': | |
419 | if (len > strend - s) | |
420 | len = strend - s; | |
421 | if (checksum) { | |
422 | uchar_checksum: | |
423 | while (len-- > 0) { | |
424 | auint = *s++ & 255; | |
425 | culong += auint; | |
426 | } | |
427 | } | |
428 | else { | |
429 | EXTEND(SP, len); | |
430 | EXTEND_MORTAL(len); | |
431 | while (len-- > 0) { | |
432 | auint = *s++ & 255; | |
433 | sv = NEWSV(37, 0); | |
434 | sv_setiv(sv, (IV)auint); | |
435 | PUSHs(sv_2mortal(sv)); | |
436 | } | |
437 | } | |
438 | break; | |
439 | case 'U': | |
440 | if (len > strend - s) | |
441 | len = strend - s; | |
442 | if (checksum) { | |
443 | while (len-- > 0 && s < strend) { | |
444 | STRLEN alen; | |
445 | auint = utf8n_to_uvchr((U8*)s, strend - s, &alen, 0); | |
446 | along = alen; | |
447 | s += along; | |
448 | if (checksum > 32) | |
449 | cdouble += (NV)auint; | |
450 | else | |
451 | culong += auint; | |
452 | } | |
453 | } | |
454 | else { | |
455 | EXTEND(SP, len); | |
456 | EXTEND_MORTAL(len); | |
457 | while (len-- > 0 && s < strend) { | |
458 | STRLEN alen; | |
459 | auint = utf8n_to_uvchr((U8*)s, strend - s, &alen, 0); | |
460 | along = alen; | |
461 | s += along; | |
462 | sv = NEWSV(37, 0); | |
463 | sv_setuv(sv, (UV)auint); | |
464 | PUSHs(sv_2mortal(sv)); | |
465 | } | |
466 | } | |
467 | break; | |
468 | case 's': | |
469 | #if SHORTSIZE == SIZE16 | |
470 | along = (strend - s) / SIZE16; | |
471 | #else | |
472 | along = (strend - s) / (natint ? sizeof(short) : SIZE16); | |
473 | #endif | |
474 | if (len > along) | |
475 | len = along; | |
476 | if (checksum) { | |
477 | #if SHORTSIZE != SIZE16 | |
478 | if (natint) { | |
479 | short ashort; | |
480 | while (len-- > 0) { | |
481 | COPYNN(s, &ashort, sizeof(short)); | |
482 | s += sizeof(short); | |
483 | culong += ashort; | |
484 | ||
485 | } | |
486 | } | |
487 | else | |
488 | #endif | |
489 | { | |
490 | while (len-- > 0) { | |
491 | COPY16(s, &ashort); | |
492 | #if SHORTSIZE > SIZE16 | |
493 | if (ashort > 32767) | |
494 | ashort -= 65536; | |
495 | #endif | |
496 | s += SIZE16; | |
497 | culong += ashort; | |
498 | } | |
499 | } | |
500 | } | |
501 | else { | |
502 | EXTEND(SP, len); | |
503 | EXTEND_MORTAL(len); | |
504 | #if SHORTSIZE != SIZE16 | |
505 | if (natint) { | |
506 | short ashort; | |
507 | while (len-- > 0) { | |
508 | COPYNN(s, &ashort, sizeof(short)); | |
509 | s += sizeof(short); | |
510 | sv = NEWSV(38, 0); | |
511 | sv_setiv(sv, (IV)ashort); | |
512 | PUSHs(sv_2mortal(sv)); | |
513 | } | |
514 | } | |
515 | else | |
516 | #endif | |
517 | { | |
518 | while (len-- > 0) { | |
519 | COPY16(s, &ashort); | |
520 | #if SHORTSIZE > SIZE16 | |
521 | if (ashort > 32767) | |
522 | ashort -= 65536; | |
523 | #endif | |
524 | s += SIZE16; | |
525 | sv = NEWSV(38, 0); | |
526 | sv_setiv(sv, (IV)ashort); | |
527 | PUSHs(sv_2mortal(sv)); | |
528 | } | |
529 | } | |
530 | } | |
531 | break; | |
532 | case 'v': | |
533 | case 'n': | |
534 | case 'S': | |
535 | #if SHORTSIZE == SIZE16 | |
536 | along = (strend - s) / SIZE16; | |
537 | #else | |
538 | unatint = natint && datumtype == 'S'; | |
539 | along = (strend - s) / (unatint ? sizeof(unsigned short) : SIZE16); | |
540 | #endif | |
541 | if (len > along) | |
542 | len = along; | |
543 | if (checksum) { | |
544 | #if SHORTSIZE != SIZE16 | |
545 | if (unatint) { | |
546 | unsigned short aushort; | |
547 | while (len-- > 0) { | |
548 | COPYNN(s, &aushort, sizeof(unsigned short)); | |
549 | s += sizeof(unsigned short); | |
550 | culong += aushort; | |
551 | } | |
552 | } | |
553 | else | |
554 | #endif | |
555 | { | |
556 | while (len-- > 0) { | |
557 | COPY16(s, &aushort); | |
558 | s += SIZE16; | |
559 | #ifdef HAS_NTOHS | |
560 | if (datumtype == 'n') | |
561 | aushort = PerlSock_ntohs(aushort); | |
562 | #endif | |
563 | #ifdef HAS_VTOHS | |
564 | if (datumtype == 'v') | |
565 | aushort = vtohs(aushort); | |
566 | #endif | |
567 | culong += aushort; | |
568 | } | |
569 | } | |
570 | } | |
571 | else { | |
572 | EXTEND(SP, len); | |
573 | EXTEND_MORTAL(len); | |
574 | #if SHORTSIZE != SIZE16 | |
575 | if (unatint) { | |
576 | unsigned short aushort; | |
577 | while (len-- > 0) { | |
578 | COPYNN(s, &aushort, sizeof(unsigned short)); | |
579 | s += sizeof(unsigned short); | |
580 | sv = NEWSV(39, 0); | |
581 | sv_setiv(sv, (UV)aushort); | |
582 | PUSHs(sv_2mortal(sv)); | |
583 | } | |
584 | } | |
585 | else | |
586 | #endif | |
587 | { | |
588 | while (len-- > 0) { | |
589 | COPY16(s, &aushort); | |
590 | s += SIZE16; | |
591 | sv = NEWSV(39, 0); | |
592 | #ifdef HAS_NTOHS | |
593 | if (datumtype == 'n') | |
594 | aushort = PerlSock_ntohs(aushort); | |
595 | #endif | |
596 | #ifdef HAS_VTOHS | |
597 | if (datumtype == 'v') | |
598 | aushort = vtohs(aushort); | |
599 | #endif | |
600 | sv_setiv(sv, (UV)aushort); | |
601 | PUSHs(sv_2mortal(sv)); | |
602 | } | |
603 | } | |
604 | } | |
605 | break; | |
606 | case 'i': | |
607 | along = (strend - s) / sizeof(int); | |
608 | if (len > along) | |
609 | len = along; | |
610 | if (checksum) { | |
611 | while (len-- > 0) { | |
612 | Copy(s, &aint, 1, int); | |
613 | s += sizeof(int); | |
614 | if (checksum > 32) | |
615 | cdouble += (NV)aint; | |
616 | else | |
617 | culong += aint; | |
618 | } | |
619 | } | |
620 | else { | |
621 | EXTEND(SP, len); | |
622 | EXTEND_MORTAL(len); | |
623 | while (len-- > 0) { | |
624 | Copy(s, &aint, 1, int); | |
625 | s += sizeof(int); | |
626 | sv = NEWSV(40, 0); | |
627 | #ifdef __osf__ | |
628 | /* Without the dummy below unpack("i", pack("i",-1)) | |
629 | * return 0xFFffFFff instead of -1 for Digital Unix V4.0 | |
630 | * cc with optimization turned on. | |
631 | * | |
632 | * The bug was detected in | |
633 | * DEC C V5.8-009 on Digital UNIX V4.0 (Rev. 1091) (V4.0E) | |
634 | * with optimization (-O4) turned on. | |
635 | * DEC C V5.2-040 on Digital UNIX V4.0 (Rev. 564) (V4.0B) | |
636 | * does not have this problem even with -O4. | |
637 | * | |
638 | * This bug was reported as DECC_BUGS 1431 | |
639 | * and tracked internally as GEM_BUGS 7775. | |
640 | * | |
641 | * The bug is fixed in | |
642 | * Tru64 UNIX V5.0: Compaq C V6.1-006 or later | |
643 | * UNIX V4.0F support: DEC C V5.9-006 or later | |
644 | * UNIX V4.0E support: DEC C V5.8-011 or later | |
645 | * and also in DTK. | |
646 | * | |
647 | * See also few lines later for the same bug. | |
648 | */ | |
649 | (aint) ? | |
650 | sv_setiv(sv, (IV)aint) : | |
651 | #endif | |
652 | sv_setiv(sv, (IV)aint); | |
653 | PUSHs(sv_2mortal(sv)); | |
654 | } | |
655 | } | |
656 | break; | |
657 | case 'I': | |
658 | along = (strend - s) / sizeof(unsigned int); | |
659 | if (len > along) | |
660 | len = along; | |
661 | if (checksum) { | |
662 | while (len-- > 0) { | |
663 | Copy(s, &auint, 1, unsigned int); | |
664 | s += sizeof(unsigned int); | |
665 | if (checksum > 32) | |
666 | cdouble += (NV)auint; | |
667 | else | |
668 | culong += auint; | |
669 | } | |
670 | } | |
671 | else { | |
672 | EXTEND(SP, len); | |
673 | EXTEND_MORTAL(len); | |
674 | while (len-- > 0) { | |
675 | Copy(s, &auint, 1, unsigned int); | |
676 | s += sizeof(unsigned int); | |
677 | sv = NEWSV(41, 0); | |
678 | #ifdef __osf__ | |
679 | /* Without the dummy below unpack("I", pack("I",0xFFFFFFFF)) | |
680 | * returns 1.84467440737096e+19 instead of 0xFFFFFFFF. | |
681 | * See details few lines earlier. */ | |
682 | (auint) ? | |
683 | sv_setuv(sv, (UV)auint) : | |
684 | #endif | |
685 | sv_setuv(sv, (UV)auint); | |
686 | PUSHs(sv_2mortal(sv)); | |
687 | } | |
688 | } | |
689 | break; | |
690 | case 'l': | |
691 | #if LONGSIZE == SIZE32 | |
692 | along = (strend - s) / SIZE32; | |
693 | #else | |
694 | along = (strend - s) / (natint ? sizeof(long) : SIZE32); | |
695 | #endif | |
696 | if (len > along) | |
697 | len = along; | |
698 | if (checksum) { | |
699 | #if LONGSIZE != SIZE32 | |
700 | if (natint) { | |
701 | while (len-- > 0) { | |
702 | COPYNN(s, &along, sizeof(long)); | |
703 | s += sizeof(long); | |
704 | if (checksum > 32) | |
705 | cdouble += (NV)along; | |
706 | else | |
707 | culong += along; | |
708 | } | |
709 | } | |
710 | else | |
711 | #endif | |
712 | { | |
713 | while (len-- > 0) { | |
714 | #if LONGSIZE > SIZE32 && INTSIZE == SIZE32 | |
715 | I32 along; | |
716 | #endif | |
717 | COPY32(s, &along); | |
718 | #if LONGSIZE > SIZE32 | |
719 | if (along > 2147483647) | |
720 | along -= 4294967296; | |
721 | #endif | |
722 | s += SIZE32; | |
723 | if (checksum > 32) | |
724 | cdouble += (NV)along; | |
725 | else | |
726 | culong += along; | |
727 | } | |
728 | } | |
729 | } | |
730 | else { | |
731 | EXTEND(SP, len); | |
732 | EXTEND_MORTAL(len); | |
733 | #if LONGSIZE != SIZE32 | |
734 | if (natint) { | |
735 | while (len-- > 0) { | |
736 | COPYNN(s, &along, sizeof(long)); | |
737 | s += sizeof(long); | |
738 | sv = NEWSV(42, 0); | |
739 | sv_setiv(sv, (IV)along); | |
740 | PUSHs(sv_2mortal(sv)); | |
741 | } | |
742 | } | |
743 | else | |
744 | #endif | |
745 | { | |
746 | while (len-- > 0) { | |
747 | #if LONGSIZE > SIZE32 && INTSIZE == SIZE32 | |
748 | I32 along; | |
749 | #endif | |
750 | COPY32(s, &along); | |
751 | #if LONGSIZE > SIZE32 | |
752 | if (along > 2147483647) | |
753 | along -= 4294967296; | |
754 | #endif | |
755 | s += SIZE32; | |
756 | sv = NEWSV(42, 0); | |
757 | sv_setiv(sv, (IV)along); | |
758 | PUSHs(sv_2mortal(sv)); | |
759 | } | |
760 | } | |
761 | } | |
762 | break; | |
763 | case 'V': | |
764 | case 'N': | |
765 | case 'L': | |
766 | #if LONGSIZE == SIZE32 | |
767 | along = (strend - s) / SIZE32; | |
768 | #else | |
769 | unatint = natint && datumtype == 'L'; | |
770 | along = (strend - s) / (unatint ? sizeof(unsigned long) : SIZE32); | |
771 | #endif | |
772 | if (len > along) | |
773 | len = along; | |
774 | if (checksum) { | |
775 | #if LONGSIZE != SIZE32 | |
776 | if (unatint) { | |
777 | unsigned long aulong; | |
778 | while (len-- > 0) { | |
779 | COPYNN(s, &aulong, sizeof(unsigned long)); | |
780 | s += sizeof(unsigned long); | |
781 | if (checksum > 32) | |
782 | cdouble += (NV)aulong; | |
783 | else | |
784 | culong += aulong; | |
785 | } | |
786 | } | |
787 | else | |
788 | #endif | |
789 | { | |
790 | while (len-- > 0) { | |
791 | COPY32(s, &aulong); | |
792 | s += SIZE32; | |
793 | #ifdef HAS_NTOHL | |
794 | if (datumtype == 'N') | |
795 | aulong = PerlSock_ntohl(aulong); | |
796 | #endif | |
797 | #ifdef HAS_VTOHL | |
798 | if (datumtype == 'V') | |
799 | aulong = vtohl(aulong); | |
800 | #endif | |
801 | if (checksum > 32) | |
802 | cdouble += (NV)aulong; | |
803 | else | |
804 | culong += aulong; | |
805 | } | |
806 | } | |
807 | } | |
808 | else { | |
809 | EXTEND(SP, len); | |
810 | EXTEND_MORTAL(len); | |
811 | #if LONGSIZE != SIZE32 | |
812 | if (unatint) { | |
813 | unsigned long aulong; | |
814 | while (len-- > 0) { | |
815 | COPYNN(s, &aulong, sizeof(unsigned long)); | |
816 | s += sizeof(unsigned long); | |
817 | sv = NEWSV(43, 0); | |
818 | sv_setuv(sv, (UV)aulong); | |
819 | PUSHs(sv_2mortal(sv)); | |
820 | } | |
821 | } | |
822 | else | |
823 | #endif | |
824 | { | |
825 | while (len-- > 0) { | |
826 | COPY32(s, &aulong); | |
827 | s += SIZE32; | |
828 | #ifdef HAS_NTOHL | |
829 | if (datumtype == 'N') | |
830 | aulong = PerlSock_ntohl(aulong); | |
831 | #endif | |
832 | #ifdef HAS_VTOHL | |
833 | if (datumtype == 'V') | |
834 | aulong = vtohl(aulong); | |
835 | #endif | |
836 | sv = NEWSV(43, 0); | |
837 | sv_setuv(sv, (UV)aulong); | |
838 | PUSHs(sv_2mortal(sv)); | |
839 | } | |
840 | } | |
841 | } | |
842 | break; | |
843 | case 'p': | |
844 | along = (strend - s) / sizeof(char*); | |
845 | if (len > along) | |
846 | len = along; | |
847 | EXTEND(SP, len); | |
848 | EXTEND_MORTAL(len); | |
849 | while (len-- > 0) { | |
850 | if (sizeof(char*) > strend - s) | |
851 | break; | |
852 | else { | |
853 | Copy(s, &aptr, 1, char*); | |
854 | s += sizeof(char*); | |
855 | } | |
856 | sv = NEWSV(44, 0); | |
857 | if (aptr) | |
858 | sv_setpv(sv, aptr); | |
859 | PUSHs(sv_2mortal(sv)); | |
860 | } | |
861 | break; | |
862 | case 'w': | |
863 | EXTEND(SP, len); | |
864 | EXTEND_MORTAL(len); | |
865 | { | |
866 | UV auv = 0; | |
867 | U32 bytes = 0; | |
868 | ||
869 | while ((len > 0) && (s < strend)) { | |
870 | auv = (auv << 7) | (*s & 0x7f); | |
871 | /* UTF8_IS_XXXXX not right here - using constant 0x80 */ | |
872 | if ((U8)(*s++) < 0x80) { | |
873 | bytes = 0; | |
874 | sv = NEWSV(40, 0); | |
875 | sv_setuv(sv, auv); | |
876 | PUSHs(sv_2mortal(sv)); | |
877 | len--; | |
878 | auv = 0; | |
879 | } | |
880 | else if (++bytes >= sizeof(UV)) { /* promote to string */ | |
881 | char *t; | |
882 | STRLEN n_a; | |
883 | ||
884 | sv = Perl_newSVpvf(aTHX_ "%.*"UVf, (int)TYPE_DIGITS(UV), auv); | |
885 | while (s < strend) { | |
886 | sv = mul128(sv, *s & 0x7f); | |
887 | if (!(*s++ & 0x80)) { | |
888 | bytes = 0; | |
889 | break; | |
890 | } | |
891 | } | |
892 | t = SvPV(sv, n_a); | |
893 | while (*t == '0') | |
894 | t++; | |
895 | sv_chop(sv, t); | |
896 | PUSHs(sv_2mortal(sv)); | |
897 | len--; | |
898 | auv = 0; | |
899 | } | |
900 | } | |
901 | if ((s >= strend) && bytes) | |
902 | DIE(aTHX_ "Unterminated compressed integer"); | |
903 | } | |
904 | break; | |
905 | case 'P': | |
906 | EXTEND(SP, 1); | |
907 | if (sizeof(char*) > strend - s) | |
908 | break; | |
909 | else { | |
910 | Copy(s, &aptr, 1, char*); | |
911 | s += sizeof(char*); | |
912 | } | |
913 | sv = NEWSV(44, 0); | |
914 | if (aptr) | |
915 | sv_setpvn(sv, aptr, len); | |
916 | PUSHs(sv_2mortal(sv)); | |
917 | break; | |
918 | #ifdef HAS_QUAD | |
919 | case 'q': | |
920 | along = (strend - s) / sizeof(Quad_t); | |
921 | if (len > along) | |
922 | len = along; | |
923 | EXTEND(SP, len); | |
924 | EXTEND_MORTAL(len); | |
925 | while (len-- > 0) { | |
926 | if (s + sizeof(Quad_t) > strend) | |
927 | aquad = 0; | |
928 | else { | |
929 | Copy(s, &aquad, 1, Quad_t); | |
930 | s += sizeof(Quad_t); | |
931 | } | |
932 | sv = NEWSV(42, 0); | |
933 | if (aquad >= IV_MIN && aquad <= IV_MAX) | |
934 | sv_setiv(sv, (IV)aquad); | |
935 | else | |
936 | sv_setnv(sv, (NV)aquad); | |
937 | PUSHs(sv_2mortal(sv)); | |
938 | } | |
939 | break; | |
940 | case 'Q': | |
941 | along = (strend - s) / sizeof(Quad_t); | |
942 | if (len > along) | |
943 | len = along; | |
944 | EXTEND(SP, len); | |
945 | EXTEND_MORTAL(len); | |
946 | while (len-- > 0) { | |
947 | if (s + sizeof(Uquad_t) > strend) | |
948 | auquad = 0; | |
949 | else { | |
950 | Copy(s, &auquad, 1, Uquad_t); | |
951 | s += sizeof(Uquad_t); | |
952 | } | |
953 | sv = NEWSV(43, 0); | |
954 | if (auquad <= UV_MAX) | |
955 | sv_setuv(sv, (UV)auquad); | |
956 | else | |
957 | sv_setnv(sv, (NV)auquad); | |
958 | PUSHs(sv_2mortal(sv)); | |
959 | } | |
960 | break; | |
961 | #endif | |
962 | /* float and double added gnb@melba.bby.oz.au 22/11/89 */ | |
963 | case 'f': | |
964 | case 'F': | |
965 | along = (strend - s) / sizeof(float); | |
966 | if (len > along) | |
967 | len = along; | |
968 | if (checksum) { | |
969 | while (len-- > 0) { | |
970 | Copy(s, &afloat, 1, float); | |
971 | s += sizeof(float); | |
972 | cdouble += afloat; | |
973 | } | |
974 | } | |
975 | else { | |
976 | EXTEND(SP, len); | |
977 | EXTEND_MORTAL(len); | |
978 | while (len-- > 0) { | |
979 | Copy(s, &afloat, 1, float); | |
980 | s += sizeof(float); | |
981 | sv = NEWSV(47, 0); | |
982 | sv_setnv(sv, (NV)afloat); | |
983 | PUSHs(sv_2mortal(sv)); | |
984 | } | |
985 | } | |
986 | break; | |
987 | case 'd': | |
988 | case 'D': | |
989 | along = (strend - s) / sizeof(double); | |
990 | if (len > along) | |
991 | len = along; | |
992 | if (checksum) { | |
993 | while (len-- > 0) { | |
994 | Copy(s, &adouble, 1, double); | |
995 | s += sizeof(double); | |
996 | cdouble += adouble; | |
997 | } | |
998 | } | |
999 | else { | |
1000 | EXTEND(SP, len); | |
1001 | EXTEND_MORTAL(len); | |
1002 | while (len-- > 0) { | |
1003 | Copy(s, &adouble, 1, double); | |
1004 | s += sizeof(double); | |
1005 | sv = NEWSV(48, 0); | |
1006 | sv_setnv(sv, (NV)adouble); | |
1007 | PUSHs(sv_2mortal(sv)); | |
1008 | } | |
1009 | } | |
1010 | break; | |
1011 | case 'u': | |
1012 | /* MKS: | |
1013 | * Initialise the decode mapping. By using a table driven | |
1014 | * algorithm, the code will be character-set independent | |
1015 | * (and just as fast as doing character arithmetic) | |
1016 | */ | |
1017 | if (PL_uudmap['M'] == 0) { | |
1018 | int i; | |
1019 | ||
1020 | for (i = 0; i < sizeof(PL_uuemap); i += 1) | |
1021 | PL_uudmap[(U8)PL_uuemap[i]] = i; | |
1022 | /* | |
1023 | * Because ' ' and '`' map to the same value, | |
1024 | * we need to decode them both the same. | |
1025 | */ | |
1026 | PL_uudmap[' '] = 0; | |
1027 | } | |
1028 | ||
1029 | along = (strend - s) * 3 / 4; | |
1030 | sv = NEWSV(42, along); | |
1031 | if (along) | |
1032 | SvPOK_on(sv); | |
1033 | while (s < strend && *s > ' ' && ISUUCHAR(*s)) { | |
1034 | I32 a, b, c, d; | |
1035 | char hunk[4]; | |
1036 | ||
1037 | hunk[3] = '\0'; | |
1038 | len = PL_uudmap[*(U8*)s++] & 077; | |
1039 | while (len > 0) { | |
1040 | if (s < strend && ISUUCHAR(*s)) | |
1041 | a = PL_uudmap[*(U8*)s++] & 077; | |
1042 | else | |
1043 | a = 0; | |
1044 | if (s < strend && ISUUCHAR(*s)) | |
1045 | b = PL_uudmap[*(U8*)s++] & 077; | |
1046 | else | |
1047 | b = 0; | |
1048 | if (s < strend && ISUUCHAR(*s)) | |
1049 | c = PL_uudmap[*(U8*)s++] & 077; | |
1050 | else | |
1051 | c = 0; | |
1052 | if (s < strend && ISUUCHAR(*s)) | |
1053 | d = PL_uudmap[*(U8*)s++] & 077; | |
1054 | else | |
1055 | d = 0; | |
1056 | hunk[0] = (a << 2) | (b >> 4); | |
1057 | hunk[1] = (b << 4) | (c >> 2); | |
1058 | hunk[2] = (c << 6) | d; | |
1059 | sv_catpvn(sv, hunk, (len > 3) ? 3 : len); | |
1060 | len -= 3; | |
1061 | } | |
1062 | if (*s == '\n') | |
1063 | s++; | |
1064 | else if (s[1] == '\n') /* possible checksum byte */ | |
1065 | s += 2; | |
1066 | } | |
1067 | XPUSHs(sv_2mortal(sv)); | |
1068 | break; | |
1069 | } | |
1070 | if (checksum) { | |
1071 | sv = NEWSV(42, 0); | |
1072 | if (strchr("fFdD", datumtype) || | |
1073 | (checksum > 32 && strchr("iIlLNU", datumtype)) ) { | |
1074 | NV trouble; | |
1075 | ||
1076 | adouble = 1.0; | |
1077 | while (checksum >= 16) { | |
1078 | checksum -= 16; | |
1079 | adouble *= 65536.0; | |
1080 | } | |
1081 | while (checksum >= 4) { | |
1082 | checksum -= 4; | |
1083 | adouble *= 16.0; | |
1084 | } | |
1085 | while (checksum--) | |
1086 | adouble *= 2.0; | |
1087 | along = (1 << checksum) - 1; | |
1088 | while (cdouble < 0.0) | |
1089 | cdouble += adouble; | |
1090 | cdouble = Perl_modf(cdouble / adouble, &trouble) * adouble; | |
1091 | sv_setnv(sv, cdouble); | |
1092 | } | |
1093 | else { | |
1094 | if (checksum < 32) { | |
1095 | aulong = (1 << checksum) - 1; | |
1096 | culong &= aulong; | |
1097 | } | |
1098 | sv_setuv(sv, (UV)culong); | |
1099 | } | |
1100 | XPUSHs(sv_2mortal(sv)); | |
1101 | checksum = 0; | |
1102 | } | |
1103 | } | |
1104 | if (SP - PL_stack_base == start_sp_offset && gimme == G_SCALAR) | |
1105 | PUSHs(&PL_sv_undef); | |
1106 | RETURN; | |
1107 | } | |
1108 | ||
1109 | STATIC void | |
1110 | S_doencodes(pTHX_ register SV *sv, register char *s, register I32 len) | |
1111 | { | |
1112 | char hunk[5]; | |
1113 | ||
1114 | *hunk = PL_uuemap[len]; | |
1115 | sv_catpvn(sv, hunk, 1); | |
1116 | hunk[4] = '\0'; | |
1117 | while (len > 2) { | |
1118 | hunk[0] = PL_uuemap[(077 & (*s >> 2))]; | |
1119 | hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((s[1] >> 4) & 017)))]; | |
1120 | hunk[2] = PL_uuemap[(077 & (((s[1] << 2) & 074) | ((s[2] >> 6) & 03)))]; | |
1121 | hunk[3] = PL_uuemap[(077 & (s[2] & 077))]; | |
1122 | sv_catpvn(sv, hunk, 4); | |
1123 | s += 3; | |
1124 | len -= 3; | |
1125 | } | |
1126 | if (len > 0) { | |
1127 | char r = (len > 1 ? s[1] : '\0'); | |
1128 | hunk[0] = PL_uuemap[(077 & (*s >> 2))]; | |
1129 | hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((r >> 4) & 017)))]; | |
1130 | hunk[2] = PL_uuemap[(077 & ((r << 2) & 074))]; | |
1131 | hunk[3] = PL_uuemap[0]; | |
1132 | sv_catpvn(sv, hunk, 4); | |
1133 | } | |
1134 | sv_catpvn(sv, "\n", 1); | |
1135 | } | |
1136 | ||
1137 | STATIC SV * | |
1138 | S_is_an_int(pTHX_ char *s, STRLEN l) | |
1139 | { | |
1140 | STRLEN n_a; | |
1141 | SV *result = newSVpvn(s, l); | |
1142 | char *result_c = SvPV(result, n_a); /* convenience */ | |
1143 | char *out = result_c; | |
1144 | bool skip = 1; | |
1145 | bool ignore = 0; | |
1146 | ||
1147 | while (*s) { | |
1148 | switch (*s) { | |
1149 | case ' ': | |
1150 | break; | |
1151 | case '+': | |
1152 | if (!skip) { | |
1153 | SvREFCNT_dec(result); | |
1154 | return (NULL); | |
1155 | } | |
1156 | break; | |
1157 | case '0': | |
1158 | case '1': | |
1159 | case '2': | |
1160 | case '3': | |
1161 | case '4': | |
1162 | case '5': | |
1163 | case '6': | |
1164 | case '7': | |
1165 | case '8': | |
1166 | case '9': | |
1167 | skip = 0; | |
1168 | if (!ignore) { | |
1169 | *(out++) = *s; | |
1170 | } | |
1171 | break; | |
1172 | case '.': | |
1173 | ignore = 1; | |
1174 | break; | |
1175 | default: | |
1176 | SvREFCNT_dec(result); | |
1177 | return (NULL); | |
1178 | } | |
1179 | s++; | |
1180 | } | |
1181 | *(out++) = '\0'; | |
1182 | SvCUR_set(result, out - result_c); | |
1183 | return (result); | |
1184 | } | |
1185 | ||
1186 | /* pnum must be '\0' terminated */ | |
1187 | STATIC int | |
1188 | S_div128(pTHX_ SV *pnum, bool *done) | |
1189 | { | |
1190 | STRLEN len; | |
1191 | char *s = SvPV(pnum, len); | |
1192 | int m = 0; | |
1193 | int r = 0; | |
1194 | char *t = s; | |
1195 | ||
1196 | *done = 1; | |
1197 | while (*t) { | |
1198 | int i; | |
1199 | ||
1200 | i = m * 10 + (*t - '0'); | |
1201 | m = i & 0x7F; | |
1202 | r = (i >> 7); /* r < 10 */ | |
1203 | if (r) { | |
1204 | *done = 0; | |
1205 | } | |
1206 | *(t++) = '0' + r; | |
1207 | } | |
1208 | *(t++) = '\0'; | |
1209 | SvCUR_set(pnum, (STRLEN) (t - s)); | |
1210 | return (m); | |
1211 | } | |
1212 | ||
1213 | ||
1214 | PP(pp_pack) | |
1215 | { | |
1216 | dSP; dMARK; dORIGMARK; dTARGET; | |
1217 | register SV *cat = TARG; | |
1218 | register I32 items; | |
1219 | STRLEN fromlen; | |
1220 | register char *pat = SvPVx(*++MARK, fromlen); | |
1221 | char *patcopy; | |
1222 | register char *patend = pat + fromlen; | |
1223 | register I32 len; | |
1224 | I32 datumtype; | |
1225 | SV *fromstr; | |
1226 | /*SUPPRESS 442*/ | |
1227 | static char null10[] = {0,0,0,0,0,0,0,0,0,0}; | |
1228 | static char *space10 = " "; | |
1229 | ||
1230 | /* These must not be in registers: */ | |
1231 | char achar; | |
1232 | I16 ashort; | |
1233 | int aint; | |
1234 | unsigned int auint; | |
1235 | I32 along; | |
1236 | U32 aulong; | |
1237 | #ifdef HAS_QUAD | |
1238 | Quad_t aquad; | |
1239 | Uquad_t auquad; | |
1240 | #endif | |
1241 | char *aptr; | |
1242 | float afloat; | |
1243 | double adouble; | |
1244 | int commas = 0; | |
1245 | #ifdef PERL_NATINT_PACK | |
1246 | int natint; /* native integer */ | |
1247 | #endif | |
1248 | ||
1249 | items = SP - MARK; | |
1250 | MARK++; | |
1251 | sv_setpvn(cat, "", 0); | |
1252 | patcopy = pat; | |
1253 | while (pat < patend) { | |
1254 | SV *lengthcode = Nullsv; | |
1255 | #define NEXTFROM ( lengthcode ? lengthcode : items-- > 0 ? *MARK++ : &PL_sv_no) | |
1256 | datumtype = *pat++ & 0xFF; | |
1257 | #ifdef PERL_NATINT_PACK | |
1258 | natint = 0; | |
1259 | #endif | |
1260 | if (isSPACE(datumtype)) { | |
1261 | patcopy++; | |
1262 | continue; | |
1263 | } | |
1264 | #ifndef PACKED_IS_OCTETS | |
1265 | if (datumtype == 'U' && pat == patcopy+1) | |
1266 | SvUTF8_on(cat); | |
1267 | #endif | |
1268 | if (datumtype == '#') { | |
1269 | while (pat < patend && *pat != '\n') | |
1270 | pat++; | |
1271 | continue; | |
1272 | } | |
1273 | if (*pat == '!') { | |
1274 | char *natstr = "sSiIlL"; | |
1275 | ||
1276 | if (strchr(natstr, datumtype)) { | |
1277 | #ifdef PERL_NATINT_PACK | |
1278 | natint = 1; | |
1279 | #endif | |
1280 | pat++; | |
1281 | } | |
1282 | else | |
1283 | DIE(aTHX_ "'!' allowed only after types %s", natstr); | |
1284 | } | |
1285 | if (*pat == '*') { | |
1286 | len = strchr("@Xxu", datumtype) ? 0 : items; | |
1287 | pat++; | |
1288 | } | |
1289 | else if (isDIGIT(*pat)) { | |
1290 | len = *pat++ - '0'; | |
1291 | while (isDIGIT(*pat)) { | |
1292 | len = (len * 10) + (*pat++ - '0'); | |
1293 | if (len < 0) | |
1294 | DIE(aTHX_ "Repeat count in pack overflows"); | |
1295 | } | |
1296 | } | |
1297 | else | |
1298 | len = 1; | |
1299 | if (*pat == '/') { | |
1300 | ++pat; | |
1301 | if ((*pat != 'a' && *pat != 'A' && *pat != 'Z') || pat[1] != '*') | |
1302 | DIE(aTHX_ "/ must be followed by a*, A* or Z*"); | |
1303 | lengthcode = sv_2mortal(newSViv(sv_len(items > 0 | |
1304 | ? *MARK : &PL_sv_no) | |
1305 | + (*pat == 'Z' ? 1 : 0))); | |
1306 | } | |
1307 | switch(datumtype) { | |
1308 | default: | |
1309 | DIE(aTHX_ "Invalid type in pack: '%c'", (int)datumtype); | |
1310 | case ',': /* grandfather in commas but with a warning */ | |
1311 | if (commas++ == 0 && ckWARN(WARN_PACK)) | |
1312 | Perl_warner(aTHX_ WARN_PACK, | |
1313 | "Invalid type in pack: '%c'", (int)datumtype); | |
1314 | break; | |
1315 | case '%': | |
1316 | DIE(aTHX_ "%% may only be used in unpack"); | |
1317 | case '@': | |
1318 | len -= SvCUR(cat); | |
1319 | if (len > 0) | |
1320 | goto grow; | |
1321 | len = -len; | |
1322 | if (len > 0) | |
1323 | goto shrink; | |
1324 | break; | |
1325 | case 'X': | |
1326 | shrink: | |
1327 | if (SvCUR(cat) < len) | |
1328 | DIE(aTHX_ "X outside of string"); | |
1329 | SvCUR(cat) -= len; | |
1330 | *SvEND(cat) = '\0'; | |
1331 | break; | |
1332 | case 'x': | |
1333 | grow: | |
1334 | while (len >= 10) { | |
1335 | sv_catpvn(cat, null10, 10); | |
1336 | len -= 10; | |
1337 | } | |
1338 | sv_catpvn(cat, null10, len); | |
1339 | break; | |
1340 | case 'A': | |
1341 | case 'Z': | |
1342 | case 'a': | |
1343 | fromstr = NEXTFROM; | |
1344 | aptr = SvPV(fromstr, fromlen); | |
1345 | if (pat[-1] == '*') { | |
1346 | len = fromlen; | |
1347 | if (datumtype == 'Z') | |
1348 | ++len; | |
1349 | } | |
1350 | if (fromlen >= len) { | |
1351 | sv_catpvn(cat, aptr, len); | |
1352 | if (datumtype == 'Z') | |
1353 | *(SvEND(cat)-1) = '\0'; | |
1354 | } | |
1355 | else { | |
1356 | sv_catpvn(cat, aptr, fromlen); | |
1357 | len -= fromlen; | |
1358 | if (datumtype == 'A') { | |
1359 | while (len >= 10) { | |
1360 | sv_catpvn(cat, space10, 10); | |
1361 | len -= 10; | |
1362 | } | |
1363 | sv_catpvn(cat, space10, len); | |
1364 | } | |
1365 | else { | |
1366 | while (len >= 10) { | |
1367 | sv_catpvn(cat, null10, 10); | |
1368 | len -= 10; | |
1369 | } | |
1370 | sv_catpvn(cat, null10, len); | |
1371 | } | |
1372 | } | |
1373 | break; | |
1374 | case 'B': | |
1375 | case 'b': | |
1376 | { | |
1377 | register char *str; | |
1378 | I32 saveitems; | |
1379 | ||
1380 | fromstr = NEXTFROM; | |
1381 | saveitems = items; | |
1382 | str = SvPV(fromstr, fromlen); | |
1383 | if (pat[-1] == '*') | |
1384 | len = fromlen; | |
1385 | aint = SvCUR(cat); | |
1386 | SvCUR(cat) += (len+7)/8; | |
1387 | SvGROW(cat, SvCUR(cat) + 1); | |
1388 | aptr = SvPVX(cat) + aint; | |
1389 | if (len > fromlen) | |
1390 | len = fromlen; | |
1391 | aint = len; | |
1392 | items = 0; | |
1393 | if (datumtype == 'B') { | |
1394 | for (len = 0; len++ < aint;) { | |
1395 | items |= *str++ & 1; | |
1396 | if (len & 7) | |
1397 | items <<= 1; | |
1398 | else { | |
1399 | *aptr++ = items & 0xff; | |
1400 | items = 0; | |
1401 | } | |
1402 | } | |
1403 | } | |
1404 | else { | |
1405 | for (len = 0; len++ < aint;) { | |
1406 | if (*str++ & 1) | |
1407 | items |= 128; | |
1408 | if (len & 7) | |
1409 | items >>= 1; | |
1410 | else { | |
1411 | *aptr++ = items & 0xff; | |
1412 | items = 0; | |
1413 | } | |
1414 | } | |
1415 | } | |
1416 | if (aint & 7) { | |
1417 | if (datumtype == 'B') | |
1418 | items <<= 7 - (aint & 7); | |
1419 | else | |
1420 | items >>= 7 - (aint & 7); | |
1421 | *aptr++ = items & 0xff; | |
1422 | } | |
1423 | str = SvPVX(cat) + SvCUR(cat); | |
1424 | while (aptr <= str) | |
1425 | *aptr++ = '\0'; | |
1426 | ||
1427 | items = saveitems; | |
1428 | } | |
1429 | break; | |
1430 | case 'H': | |
1431 | case 'h': | |
1432 | { | |
1433 | register char *str; | |
1434 | I32 saveitems; | |
1435 | ||
1436 | fromstr = NEXTFROM; | |
1437 | saveitems = items; | |
1438 | str = SvPV(fromstr, fromlen); | |
1439 | if (pat[-1] == '*') | |
1440 | len = fromlen; | |
1441 | aint = SvCUR(cat); | |
1442 | SvCUR(cat) += (len+1)/2; | |
1443 | SvGROW(cat, SvCUR(cat) + 1); | |
1444 | aptr = SvPVX(cat) + aint; | |
1445 | if (len > fromlen) | |
1446 | len = fromlen; | |
1447 | aint = len; | |
1448 | items = 0; | |
1449 | if (datumtype == 'H') { | |
1450 | for (len = 0; len++ < aint;) { | |
1451 | if (isALPHA(*str)) | |
1452 | items |= ((*str++ & 15) + 9) & 15; | |
1453 | else | |
1454 | items |= *str++ & 15; | |
1455 | if (len & 1) | |
1456 | items <<= 4; | |
1457 | else { | |
1458 | *aptr++ = items & 0xff; | |
1459 | items = 0; | |
1460 | } | |
1461 | } | |
1462 | } | |
1463 | else { | |
1464 | for (len = 0; len++ < aint;) { | |
1465 | if (isALPHA(*str)) | |
1466 | items |= (((*str++ & 15) + 9) & 15) << 4; | |
1467 | else | |
1468 | items |= (*str++ & 15) << 4; | |
1469 | if (len & 1) | |
1470 | items >>= 4; | |
1471 | else { | |
1472 | *aptr++ = items & 0xff; | |
1473 | items = 0; | |
1474 | } | |
1475 | } | |
1476 | } | |
1477 | if (aint & 1) | |
1478 | *aptr++ = items & 0xff; | |
1479 | str = SvPVX(cat) + SvCUR(cat); | |
1480 | while (aptr <= str) | |
1481 | *aptr++ = '\0'; | |
1482 | ||
1483 | items = saveitems; | |
1484 | } | |
1485 | break; | |
1486 | case 'C': | |
1487 | case 'c': | |
1488 | while (len-- > 0) { | |
1489 | fromstr = NEXTFROM; | |
1490 | switch (datumtype) { | |
1491 | case 'C': | |
1492 | aint = SvIV(fromstr); | |
1493 | if ((aint < 0 || aint > 255) && | |
1494 | ckWARN(WARN_PACK)) | |
1495 | Perl_warner(aTHX_ WARN_PACK, | |
1496 | "Character in \"C\" format wrapped"); | |
1497 | achar = aint & 255; | |
1498 | sv_catpvn(cat, &achar, sizeof(char)); | |
1499 | break; | |
1500 | case 'c': | |
1501 | aint = SvIV(fromstr); | |
1502 | if ((aint < -128 || aint > 127) && | |
1503 | ckWARN(WARN_PACK)) | |
1504 | Perl_warner(aTHX_ WARN_PACK, | |
1505 | "Character in \"c\" format wrapped"); | |
1506 | achar = aint & 255; | |
1507 | sv_catpvn(cat, &achar, sizeof(char)); | |
1508 | break; | |
1509 | } | |
1510 | } | |
1511 | break; | |
1512 | case 'U': | |
1513 | while (len-- > 0) { | |
1514 | fromstr = NEXTFROM; | |
1515 | auint = SvUV(fromstr); | |
1516 | SvGROW(cat, SvCUR(cat) + UTF8_MAXLEN + 1); | |
1517 | SvCUR_set(cat, (char*)uvchr_to_utf8((U8*)SvEND(cat),auint) | |
1518 | - SvPVX(cat)); | |
1519 | } | |
1520 | *SvEND(cat) = '\0'; | |
1521 | break; | |
1522 | /* Float and double added by gnb@melba.bby.oz.au 22/11/89 */ | |
1523 | case 'f': | |
1524 | case 'F': | |
1525 | while (len-- > 0) { | |
1526 | fromstr = NEXTFROM; | |
1527 | afloat = (float)SvNV(fromstr); | |
1528 | sv_catpvn(cat, (char *)&afloat, sizeof (float)); | |
1529 | } | |
1530 | break; | |
1531 | case 'd': | |
1532 | case 'D': | |
1533 | while (len-- > 0) { | |
1534 | fromstr = NEXTFROM; | |
1535 | adouble = (double)SvNV(fromstr); | |
1536 | sv_catpvn(cat, (char *)&adouble, sizeof (double)); | |
1537 | } | |
1538 | break; | |
1539 | case 'n': | |
1540 | while (len-- > 0) { | |
1541 | fromstr = NEXTFROM; | |
1542 | ashort = (I16)SvIV(fromstr); | |
1543 | #ifdef HAS_HTONS | |
1544 | ashort = PerlSock_htons(ashort); | |
1545 | #endif | |
1546 | CAT16(cat, &ashort); | |
1547 | } | |
1548 | break; | |
1549 | case 'v': | |
1550 | while (len-- > 0) { | |
1551 | fromstr = NEXTFROM; | |
1552 | ashort = (I16)SvIV(fromstr); | |
1553 | #ifdef HAS_HTOVS | |
1554 | ashort = htovs(ashort); | |
1555 | #endif | |
1556 | CAT16(cat, &ashort); | |
1557 | } | |
1558 | break; | |
1559 | case 'S': | |
1560 | #if SHORTSIZE != SIZE16 | |
1561 | if (natint) { | |
1562 | unsigned short aushort; | |
1563 | ||
1564 | while (len-- > 0) { | |
1565 | fromstr = NEXTFROM; | |
1566 | aushort = SvUV(fromstr); | |
1567 | sv_catpvn(cat, (char *)&aushort, sizeof(unsigned short)); | |
1568 | } | |
1569 | } | |
1570 | else | |
1571 | #endif | |
1572 | { | |
1573 | U16 aushort; | |
1574 | ||
1575 | while (len-- > 0) { | |
1576 | fromstr = NEXTFROM; | |
1577 | aushort = (U16)SvUV(fromstr); | |
1578 | CAT16(cat, &aushort); | |
1579 | } | |
1580 | ||
1581 | } | |
1582 | break; | |
1583 | case 's': | |
1584 | #if SHORTSIZE != SIZE16 | |
1585 | if (natint) { | |
1586 | short ashort; | |
1587 | ||
1588 | while (len-- > 0) { | |
1589 | fromstr = NEXTFROM; | |
1590 | ashort = SvIV(fromstr); | |
1591 | sv_catpvn(cat, (char *)&ashort, sizeof(short)); | |
1592 | } | |
1593 | } | |
1594 | else | |
1595 | #endif | |
1596 | { | |
1597 | while (len-- > 0) { | |
1598 | fromstr = NEXTFROM; | |
1599 | ashort = (I16)SvIV(fromstr); | |
1600 | CAT16(cat, &ashort); | |
1601 | } | |
1602 | } | |
1603 | break; | |
1604 | case 'I': | |
1605 | while (len-- > 0) { | |
1606 | fromstr = NEXTFROM; | |
1607 | auint = SvUV(fromstr); | |
1608 | sv_catpvn(cat, (char*)&auint, sizeof(unsigned int)); | |
1609 | } | |
1610 | break; | |
1611 | case 'w': | |
1612 | while (len-- > 0) { | |
1613 | fromstr = NEXTFROM; | |
1614 | adouble = Perl_floor(SvNV(fromstr)); | |
1615 | ||
1616 | if (adouble < 0) | |
1617 | DIE(aTHX_ "Cannot compress negative numbers"); | |
1618 | ||
1619 | if ( | |
1620 | #if UVSIZE > 4 && UVSIZE >= NVSIZE | |
1621 | adouble <= 0xffffffff | |
1622 | #else | |
1623 | # ifdef CXUX_BROKEN_CONSTANT_CONVERT | |
1624 | adouble <= UV_MAX_cxux | |
1625 | # else | |
1626 | adouble <= UV_MAX | |
1627 | # endif | |
1628 | #endif | |
1629 | ) | |
1630 | { | |
1631 | char buf[1 + sizeof(UV)]; | |
1632 | char *in = buf + sizeof(buf); | |
1633 | UV auv = U_V(adouble); | |
1634 | ||
1635 | do { | |
1636 | *--in = (auv & 0x7f) | 0x80; | |
1637 | auv >>= 7; | |
1638 | } while (auv); | |
1639 | buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */ | |
1640 | sv_catpvn(cat, in, (buf + sizeof(buf)) - in); | |
1641 | } | |
1642 | else if (SvPOKp(fromstr)) { /* decimal string arithmetics */ | |
1643 | char *from, *result, *in; | |
1644 | SV *norm; | |
1645 | STRLEN len; | |
1646 | bool done; | |
1647 | ||
1648 | /* Copy string and check for compliance */ | |
1649 | from = SvPV(fromstr, len); | |
1650 | if ((norm = is_an_int(from, len)) == NULL) | |
1651 | DIE(aTHX_ "can compress only unsigned integer"); | |
1652 | ||
1653 | New('w', result, len, char); | |
1654 | in = result + len; | |
1655 | done = FALSE; | |
1656 | while (!done) | |
1657 | *--in = div128(norm, &done) | 0x80; | |
1658 | result[len - 1] &= 0x7F; /* clear continue bit */ | |
1659 | sv_catpvn(cat, in, (result + len) - in); | |
1660 | Safefree(result); | |
1661 | SvREFCNT_dec(norm); /* free norm */ | |
1662 | } | |
1663 | else if (SvNOKp(fromstr)) { | |
1664 | char buf[sizeof(double) * 2]; /* 8/7 <= 2 */ | |
1665 | char *in = buf + sizeof(buf); | |
1666 | ||
1667 | do { | |
1668 | double next = floor(adouble / 128); | |
1669 | *--in = (unsigned char)(adouble - (next * 128)) | 0x80; | |
1670 | if (in <= buf) /* this cannot happen ;-) */ | |
1671 | DIE(aTHX_ "Cannot compress integer"); | |
a6ec74c1 JH |
1672 | adouble = next; |
1673 | } while (adouble > 0); | |
1674 | buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */ | |
1675 | sv_catpvn(cat, in, (buf + sizeof(buf)) - in); | |
1676 | } | |
1677 | else | |
1678 | DIE(aTHX_ "Cannot compress non integer"); | |
1679 | } | |
1680 | break; | |
1681 | case 'i': | |
1682 | while (len-- > 0) { | |
1683 | fromstr = NEXTFROM; | |
1684 | aint = SvIV(fromstr); | |
1685 | sv_catpvn(cat, (char*)&aint, sizeof(int)); | |
1686 | } | |
1687 | break; | |
1688 | case 'N': | |
1689 | while (len-- > 0) { | |
1690 | fromstr = NEXTFROM; | |
1691 | aulong = SvUV(fromstr); | |
1692 | #ifdef HAS_HTONL | |
1693 | aulong = PerlSock_htonl(aulong); | |
1694 | #endif | |
1695 | CAT32(cat, &aulong); | |
1696 | } | |
1697 | break; | |
1698 | case 'V': | |
1699 | while (len-- > 0) { | |
1700 | fromstr = NEXTFROM; | |
1701 | aulong = SvUV(fromstr); | |
1702 | #ifdef HAS_HTOVL | |
1703 | aulong = htovl(aulong); | |
1704 | #endif | |
1705 | CAT32(cat, &aulong); | |
1706 | } | |
1707 | break; | |
1708 | case 'L': | |
1709 | #if LONGSIZE != SIZE32 | |
1710 | if (natint) { | |
1711 | unsigned long aulong; | |
1712 | ||
1713 | while (len-- > 0) { | |
1714 | fromstr = NEXTFROM; | |
1715 | aulong = SvUV(fromstr); | |
1716 | sv_catpvn(cat, (char *)&aulong, sizeof(unsigned long)); | |
1717 | } | |
1718 | } | |
1719 | else | |
1720 | #endif | |
1721 | { | |
1722 | while (len-- > 0) { | |
1723 | fromstr = NEXTFROM; | |
1724 | aulong = SvUV(fromstr); | |
1725 | CAT32(cat, &aulong); | |
1726 | } | |
1727 | } | |
1728 | break; | |
1729 | case 'l': | |
1730 | #if LONGSIZE != SIZE32 | |
1731 | if (natint) { | |
1732 | long along; | |
1733 | ||
1734 | while (len-- > 0) { | |
1735 | fromstr = NEXTFROM; | |
1736 | along = SvIV(fromstr); | |
1737 | sv_catpvn(cat, (char *)&along, sizeof(long)); | |
1738 | } | |
1739 | } | |
1740 | else | |
1741 | #endif | |
1742 | { | |
1743 | while (len-- > 0) { | |
1744 | fromstr = NEXTFROM; | |
1745 | along = SvIV(fromstr); | |
1746 | CAT32(cat, &along); | |
1747 | } | |
1748 | } | |
1749 | break; | |
1750 | #ifdef HAS_QUAD | |
1751 | case 'Q': | |
1752 | while (len-- > 0) { | |
1753 | fromstr = NEXTFROM; | |
1754 | auquad = (Uquad_t)SvUV(fromstr); | |
1755 | sv_catpvn(cat, (char*)&auquad, sizeof(Uquad_t)); | |
1756 | } | |
1757 | break; | |
1758 | case 'q': | |
1759 | while (len-- > 0) { | |
1760 | fromstr = NEXTFROM; | |
1761 | aquad = (Quad_t)SvIV(fromstr); | |
1762 | sv_catpvn(cat, (char*)&aquad, sizeof(Quad_t)); | |
1763 | } | |
1764 | break; | |
1765 | #endif | |
1766 | case 'P': | |
1767 | len = 1; /* assume SV is correct length */ | |
1768 | /* FALL THROUGH */ | |
1769 | case 'p': | |
1770 | while (len-- > 0) { | |
1771 | fromstr = NEXTFROM; | |
1772 | if (fromstr == &PL_sv_undef) | |
1773 | aptr = NULL; | |
1774 | else { | |
1775 | STRLEN n_a; | |
1776 | /* XXX better yet, could spirit away the string to | |
1777 | * a safe spot and hang on to it until the result | |
1778 | * of pack() (and all copies of the result) are | |
1779 | * gone. | |
1780 | */ | |
1781 | if (ckWARN(WARN_PACK) && (SvTEMP(fromstr) | |
1782 | || (SvPADTMP(fromstr) | |
1783 | && !SvREADONLY(fromstr)))) | |
1784 | { | |
1785 | Perl_warner(aTHX_ WARN_PACK, | |
1786 | "Attempt to pack pointer to temporary value"); | |
1787 | } | |
1788 | if (SvPOK(fromstr) || SvNIOK(fromstr)) | |
1789 | aptr = SvPV(fromstr,n_a); | |
1790 | else | |
1791 | aptr = SvPV_force(fromstr,n_a); | |
1792 | } | |
1793 | sv_catpvn(cat, (char*)&aptr, sizeof(char*)); | |
1794 | } | |
1795 | break; | |
1796 | case 'u': | |
1797 | fromstr = NEXTFROM; | |
1798 | aptr = SvPV(fromstr, fromlen); | |
1799 | SvGROW(cat, fromlen * 4 / 3); | |
1800 | if (len <= 1) | |
1801 | len = 45; | |
1802 | else | |
1803 | len = len / 3 * 3; | |
1804 | while (fromlen > 0) { | |
1805 | I32 todo; | |
1806 | ||
1807 | if (fromlen > len) | |
1808 | todo = len; | |
1809 | else | |
1810 | todo = fromlen; | |
1811 | doencodes(cat, aptr, todo); | |
1812 | fromlen -= todo; | |
1813 | aptr += todo; | |
1814 | } | |
1815 | break; | |
1816 | } | |
1817 | } | |
1818 | SvSETMAGIC(cat); | |
1819 | SP = ORIGMARK; | |
1820 | PUSHs(cat); | |
1821 | RETURN; | |
1822 | } | |
1823 | #undef NEXTFROM | |
1824 |