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a6ec74c1 |
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 |
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 | |