Commit | Line | Data |
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 |
35bcd338 |
170 | bool do_utf8 = DO_UTF8(right); |
a6ec74c1 |
171 | |
172 | if (gimme != G_ARRAY) { /* arrange to do first one only */ |
173 | /*SUPPRESS 530*/ |
174 | for (patend = pat; !isALPHA(*patend) || *patend == 'x'; patend++) ; |
175 | if (strchr("aAZbBhHP", *patend) || *pat == '%') { |
176 | patend++; |
177 | while (isDIGIT(*patend) || *patend == '*') |
178 | patend++; |
179 | } |
180 | else |
181 | patend++; |
182 | } |
183 | while (pat < patend) { |
184 | reparse: |
185 | datumtype = *pat++ & 0xFF; |
186 | #ifdef PERL_NATINT_PACK |
187 | natint = 0; |
188 | #endif |
189 | if (isSPACE(datumtype)) |
190 | continue; |
191 | if (datumtype == '#') { |
192 | while (pat < patend && *pat != '\n') |
193 | pat++; |
194 | continue; |
195 | } |
196 | if (*pat == '!') { |
197 | char *natstr = "sSiIlL"; |
198 | |
199 | if (strchr(natstr, datumtype)) { |
200 | #ifdef PERL_NATINT_PACK |
201 | natint = 1; |
202 | #endif |
203 | pat++; |
204 | } |
205 | else |
206 | DIE(aTHX_ "'!' allowed only after types %s", natstr); |
207 | } |
208 | star = 0; |
35bcd338 |
209 | if (pat > patend) |
a6ec74c1 |
210 | len = 1; |
211 | else if (*pat == '*') { |
212 | len = strend - strbeg; /* long enough */ |
213 | pat++; |
214 | star = 1; |
215 | } |
216 | else if (isDIGIT(*pat)) { |
217 | len = *pat++ - '0'; |
218 | while (isDIGIT(*pat)) { |
219 | len = (len * 10) + (*pat++ - '0'); |
220 | if (len < 0) |
221 | DIE(aTHX_ "Repeat count in unpack overflows"); |
222 | } |
223 | } |
224 | else |
225 | len = (datumtype != '@'); |
226 | redo_switch: |
227 | switch(datumtype) { |
228 | default: |
229 | DIE(aTHX_ "Invalid type in unpack: '%c'", (int)datumtype); |
230 | case ',': /* grandfather in commas but with a warning */ |
231 | if (commas++ == 0 && ckWARN(WARN_UNPACK)) |
232 | Perl_warner(aTHX_ WARN_UNPACK, |
233 | "Invalid type in unpack: '%c'", (int)datumtype); |
234 | break; |
235 | case '%': |
236 | if (len == 1 && pat[-1] != '1') |
237 | len = 16; |
238 | checksum = len; |
239 | culong = 0; |
240 | cdouble = 0; |
241 | if (pat < patend) |
242 | goto reparse; |
243 | break; |
244 | case '@': |
245 | if (len > strend - strbeg) |
246 | DIE(aTHX_ "@ outside of string"); |
247 | s = strbeg + len; |
248 | break; |
249 | case 'X': |
250 | if (len > s - strbeg) |
251 | DIE(aTHX_ "X outside of string"); |
252 | s -= len; |
253 | break; |
254 | case 'x': |
255 | if (len > strend - s) |
256 | DIE(aTHX_ "x outside of string"); |
257 | s += len; |
258 | break; |
259 | case '/': |
260 | if (start_sp_offset >= SP - PL_stack_base) |
261 | DIE(aTHX_ "/ must follow a numeric type"); |
262 | datumtype = *pat++; |
263 | if (*pat == '*') |
264 | pat++; /* ignore '*' for compatibility with pack */ |
265 | if (isDIGIT(*pat)) |
266 | DIE(aTHX_ "/ cannot take a count" ); |
267 | len = POPi; |
268 | star = 0; |
269 | goto redo_switch; |
270 | case 'A': |
271 | case 'Z': |
272 | case 'a': |
273 | if (len > strend - s) |
274 | len = strend - s; |
275 | if (checksum) |
276 | goto uchar_checksum; |
277 | sv = NEWSV(35, len); |
278 | sv_setpvn(sv, s, len); |
279 | s += len; |
280 | if (datumtype == 'A' || datumtype == 'Z') { |
281 | aptr = s; /* borrow register */ |
282 | if (datumtype == 'Z') { /* 'Z' strips stuff after first null */ |
283 | s = SvPVX(sv); |
284 | while (*s) |
285 | s++; |
286 | } |
287 | else { /* 'A' strips both nulls and spaces */ |
288 | s = SvPVX(sv) + len - 1; |
289 | while (s >= SvPVX(sv) && (!*s || isSPACE(*s))) |
290 | s--; |
291 | *++s = '\0'; |
292 | } |
293 | SvCUR_set(sv, s - SvPVX(sv)); |
294 | s = aptr; /* unborrow register */ |
295 | } |
296 | XPUSHs(sv_2mortal(sv)); |
297 | break; |
298 | case 'B': |
299 | case 'b': |
300 | if (star || len > (strend - s) * 8) |
301 | len = (strend - s) * 8; |
302 | if (checksum) { |
303 | if (!PL_bitcount) { |
304 | Newz(601, PL_bitcount, 256, char); |
305 | for (bits = 1; bits < 256; bits++) { |
306 | if (bits & 1) PL_bitcount[bits]++; |
307 | if (bits & 2) PL_bitcount[bits]++; |
308 | if (bits & 4) PL_bitcount[bits]++; |
309 | if (bits & 8) PL_bitcount[bits]++; |
310 | if (bits & 16) PL_bitcount[bits]++; |
311 | if (bits & 32) PL_bitcount[bits]++; |
312 | if (bits & 64) PL_bitcount[bits]++; |
313 | if (bits & 128) PL_bitcount[bits]++; |
314 | } |
315 | } |
316 | while (len >= 8) { |
317 | culong += PL_bitcount[*(unsigned char*)s++]; |
318 | len -= 8; |
319 | } |
320 | if (len) { |
321 | bits = *s; |
322 | if (datumtype == 'b') { |
323 | while (len-- > 0) { |
324 | if (bits & 1) culong++; |
325 | bits >>= 1; |
326 | } |
327 | } |
328 | else { |
329 | while (len-- > 0) { |
330 | if (bits & 128) culong++; |
331 | bits <<= 1; |
332 | } |
333 | } |
334 | } |
335 | break; |
336 | } |
337 | sv = NEWSV(35, len + 1); |
338 | SvCUR_set(sv, len); |
339 | SvPOK_on(sv); |
340 | str = SvPVX(sv); |
341 | if (datumtype == 'b') { |
342 | aint = len; |
343 | for (len = 0; len < aint; len++) { |
344 | if (len & 7) /*SUPPRESS 595*/ |
345 | bits >>= 1; |
346 | else |
347 | bits = *s++; |
348 | *str++ = '0' + (bits & 1); |
349 | } |
350 | } |
351 | else { |
352 | aint = len; |
353 | for (len = 0; len < aint; len++) { |
354 | if (len & 7) |
355 | bits <<= 1; |
356 | else |
357 | bits = *s++; |
358 | *str++ = '0' + ((bits & 128) != 0); |
359 | } |
360 | } |
361 | *str = '\0'; |
362 | XPUSHs(sv_2mortal(sv)); |
363 | break; |
364 | case 'H': |
365 | case 'h': |
366 | if (star || len > (strend - s) * 2) |
367 | len = (strend - s) * 2; |
368 | sv = NEWSV(35, len + 1); |
369 | SvCUR_set(sv, len); |
370 | SvPOK_on(sv); |
371 | str = SvPVX(sv); |
372 | if (datumtype == 'h') { |
373 | aint = len; |
374 | for (len = 0; len < aint; len++) { |
375 | if (len & 1) |
376 | bits >>= 4; |
377 | else |
378 | bits = *s++; |
379 | *str++ = PL_hexdigit[bits & 15]; |
380 | } |
381 | } |
382 | else { |
383 | aint = len; |
384 | for (len = 0; len < aint; len++) { |
385 | if (len & 1) |
386 | bits <<= 4; |
387 | else |
388 | bits = *s++; |
389 | *str++ = PL_hexdigit[(bits >> 4) & 15]; |
390 | } |
391 | } |
392 | *str = '\0'; |
393 | XPUSHs(sv_2mortal(sv)); |
394 | break; |
395 | case 'c': |
396 | if (len > strend - s) |
397 | len = strend - s; |
398 | if (checksum) { |
399 | while (len-- > 0) { |
400 | aint = *s++; |
401 | if (aint >= 128) /* fake up signed chars */ |
402 | aint -= 256; |
403 | culong += aint; |
404 | } |
405 | } |
406 | else { |
407 | EXTEND(SP, len); |
408 | EXTEND_MORTAL(len); |
409 | while (len-- > 0) { |
410 | aint = *s++; |
411 | if (aint >= 128) /* fake up signed chars */ |
412 | aint -= 256; |
413 | sv = NEWSV(36, 0); |
414 | sv_setiv(sv, (IV)aint); |
415 | PUSHs(sv_2mortal(sv)); |
416 | } |
417 | } |
418 | break; |
419 | case 'C': |
35bcd338 |
420 | unpack_C: /* unpack U will jump here if not UTF-8 */ |
421 | if (len == 0) { |
422 | do_utf8 = FALSE; |
423 | break; |
424 | } |
a6ec74c1 |
425 | if (len > strend - s) |
426 | len = strend - s; |
427 | if (checksum) { |
428 | uchar_checksum: |
429 | while (len-- > 0) { |
430 | auint = *s++ & 255; |
431 | culong += auint; |
432 | } |
433 | } |
434 | else { |
435 | EXTEND(SP, len); |
436 | EXTEND_MORTAL(len); |
437 | while (len-- > 0) { |
438 | auint = *s++ & 255; |
439 | sv = NEWSV(37, 0); |
440 | sv_setiv(sv, (IV)auint); |
441 | PUSHs(sv_2mortal(sv)); |
442 | } |
443 | } |
444 | break; |
445 | case 'U': |
35bcd338 |
446 | if (len == 0) { |
447 | do_utf8 = TRUE; |
448 | break; |
449 | } |
450 | if (!do_utf8) |
451 | goto unpack_C; |
a6ec74c1 |
452 | if (len > strend - s) |
453 | len = strend - s; |
454 | if (checksum) { |
455 | while (len-- > 0 && s < strend) { |
456 | STRLEN alen; |
457 | auint = utf8n_to_uvchr((U8*)s, strend - s, &alen, 0); |
458 | along = alen; |
459 | s += along; |
460 | if (checksum > 32) |
461 | cdouble += (NV)auint; |
462 | else |
463 | culong += auint; |
464 | } |
465 | } |
466 | else { |
467 | EXTEND(SP, len); |
468 | EXTEND_MORTAL(len); |
469 | while (len-- > 0 && s < strend) { |
470 | STRLEN alen; |
471 | auint = utf8n_to_uvchr((U8*)s, strend - s, &alen, 0); |
472 | along = alen; |
473 | s += along; |
474 | sv = NEWSV(37, 0); |
475 | sv_setuv(sv, (UV)auint); |
476 | PUSHs(sv_2mortal(sv)); |
477 | } |
478 | } |
479 | break; |
480 | case 's': |
481 | #if SHORTSIZE == SIZE16 |
482 | along = (strend - s) / SIZE16; |
483 | #else |
484 | along = (strend - s) / (natint ? sizeof(short) : SIZE16); |
485 | #endif |
486 | if (len > along) |
487 | len = along; |
488 | if (checksum) { |
489 | #if SHORTSIZE != SIZE16 |
490 | if (natint) { |
491 | short ashort; |
492 | while (len-- > 0) { |
493 | COPYNN(s, &ashort, sizeof(short)); |
494 | s += sizeof(short); |
495 | culong += ashort; |
496 | |
497 | } |
498 | } |
499 | else |
500 | #endif |
501 | { |
502 | while (len-- > 0) { |
503 | COPY16(s, &ashort); |
504 | #if SHORTSIZE > SIZE16 |
505 | if (ashort > 32767) |
506 | ashort -= 65536; |
507 | #endif |
508 | s += SIZE16; |
509 | culong += ashort; |
510 | } |
511 | } |
512 | } |
513 | else { |
514 | EXTEND(SP, len); |
515 | EXTEND_MORTAL(len); |
516 | #if SHORTSIZE != SIZE16 |
517 | if (natint) { |
518 | short ashort; |
519 | while (len-- > 0) { |
520 | COPYNN(s, &ashort, sizeof(short)); |
521 | s += sizeof(short); |
522 | sv = NEWSV(38, 0); |
523 | sv_setiv(sv, (IV)ashort); |
524 | PUSHs(sv_2mortal(sv)); |
525 | } |
526 | } |
527 | else |
528 | #endif |
529 | { |
530 | while (len-- > 0) { |
531 | COPY16(s, &ashort); |
532 | #if SHORTSIZE > SIZE16 |
533 | if (ashort > 32767) |
534 | ashort -= 65536; |
535 | #endif |
536 | s += SIZE16; |
537 | sv = NEWSV(38, 0); |
538 | sv_setiv(sv, (IV)ashort); |
539 | PUSHs(sv_2mortal(sv)); |
540 | } |
541 | } |
542 | } |
543 | break; |
544 | case 'v': |
545 | case 'n': |
546 | case 'S': |
547 | #if SHORTSIZE == SIZE16 |
548 | along = (strend - s) / SIZE16; |
549 | #else |
550 | unatint = natint && datumtype == 'S'; |
551 | along = (strend - s) / (unatint ? sizeof(unsigned short) : SIZE16); |
552 | #endif |
553 | if (len > along) |
554 | len = along; |
555 | if (checksum) { |
556 | #if SHORTSIZE != SIZE16 |
557 | if (unatint) { |
558 | unsigned short aushort; |
559 | while (len-- > 0) { |
560 | COPYNN(s, &aushort, sizeof(unsigned short)); |
561 | s += sizeof(unsigned short); |
562 | culong += aushort; |
563 | } |
564 | } |
565 | else |
566 | #endif |
567 | { |
568 | while (len-- > 0) { |
569 | COPY16(s, &aushort); |
570 | s += SIZE16; |
571 | #ifdef HAS_NTOHS |
572 | if (datumtype == 'n') |
573 | aushort = PerlSock_ntohs(aushort); |
574 | #endif |
575 | #ifdef HAS_VTOHS |
576 | if (datumtype == 'v') |
577 | aushort = vtohs(aushort); |
578 | #endif |
579 | culong += aushort; |
580 | } |
581 | } |
582 | } |
583 | else { |
584 | EXTEND(SP, len); |
585 | EXTEND_MORTAL(len); |
586 | #if SHORTSIZE != SIZE16 |
587 | if (unatint) { |
588 | unsigned short aushort; |
589 | while (len-- > 0) { |
590 | COPYNN(s, &aushort, sizeof(unsigned short)); |
591 | s += sizeof(unsigned short); |
592 | sv = NEWSV(39, 0); |
593 | sv_setiv(sv, (UV)aushort); |
594 | PUSHs(sv_2mortal(sv)); |
595 | } |
596 | } |
597 | else |
598 | #endif |
599 | { |
600 | while (len-- > 0) { |
601 | COPY16(s, &aushort); |
602 | s += SIZE16; |
603 | sv = NEWSV(39, 0); |
604 | #ifdef HAS_NTOHS |
605 | if (datumtype == 'n') |
606 | aushort = PerlSock_ntohs(aushort); |
607 | #endif |
608 | #ifdef HAS_VTOHS |
609 | if (datumtype == 'v') |
610 | aushort = vtohs(aushort); |
611 | #endif |
612 | sv_setiv(sv, (UV)aushort); |
613 | PUSHs(sv_2mortal(sv)); |
614 | } |
615 | } |
616 | } |
617 | break; |
618 | case 'i': |
619 | along = (strend - s) / sizeof(int); |
620 | if (len > along) |
621 | len = along; |
622 | if (checksum) { |
623 | while (len-- > 0) { |
624 | Copy(s, &aint, 1, int); |
625 | s += sizeof(int); |
626 | if (checksum > 32) |
627 | cdouble += (NV)aint; |
628 | else |
629 | culong += aint; |
630 | } |
631 | } |
632 | else { |
633 | EXTEND(SP, len); |
634 | EXTEND_MORTAL(len); |
635 | while (len-- > 0) { |
636 | Copy(s, &aint, 1, int); |
637 | s += sizeof(int); |
638 | sv = NEWSV(40, 0); |
639 | #ifdef __osf__ |
640 | /* Without the dummy below unpack("i", pack("i",-1)) |
641 | * return 0xFFffFFff instead of -1 for Digital Unix V4.0 |
642 | * cc with optimization turned on. |
643 | * |
644 | * The bug was detected in |
645 | * DEC C V5.8-009 on Digital UNIX V4.0 (Rev. 1091) (V4.0E) |
646 | * with optimization (-O4) turned on. |
647 | * DEC C V5.2-040 on Digital UNIX V4.0 (Rev. 564) (V4.0B) |
648 | * does not have this problem even with -O4. |
649 | * |
650 | * This bug was reported as DECC_BUGS 1431 |
651 | * and tracked internally as GEM_BUGS 7775. |
652 | * |
653 | * The bug is fixed in |
654 | * Tru64 UNIX V5.0: Compaq C V6.1-006 or later |
655 | * UNIX V4.0F support: DEC C V5.9-006 or later |
656 | * UNIX V4.0E support: DEC C V5.8-011 or later |
657 | * and also in DTK. |
658 | * |
659 | * See also few lines later for the same bug. |
660 | */ |
661 | (aint) ? |
662 | sv_setiv(sv, (IV)aint) : |
663 | #endif |
664 | sv_setiv(sv, (IV)aint); |
665 | PUSHs(sv_2mortal(sv)); |
666 | } |
667 | } |
668 | break; |
669 | case 'I': |
670 | along = (strend - s) / sizeof(unsigned int); |
671 | if (len > along) |
672 | len = along; |
673 | if (checksum) { |
674 | while (len-- > 0) { |
675 | Copy(s, &auint, 1, unsigned int); |
676 | s += sizeof(unsigned int); |
677 | if (checksum > 32) |
678 | cdouble += (NV)auint; |
679 | else |
680 | culong += auint; |
681 | } |
682 | } |
683 | else { |
684 | EXTEND(SP, len); |
685 | EXTEND_MORTAL(len); |
686 | while (len-- > 0) { |
687 | Copy(s, &auint, 1, unsigned int); |
688 | s += sizeof(unsigned int); |
689 | sv = NEWSV(41, 0); |
690 | #ifdef __osf__ |
691 | /* Without the dummy below unpack("I", pack("I",0xFFFFFFFF)) |
692 | * returns 1.84467440737096e+19 instead of 0xFFFFFFFF. |
693 | * See details few lines earlier. */ |
694 | (auint) ? |
695 | sv_setuv(sv, (UV)auint) : |
696 | #endif |
697 | sv_setuv(sv, (UV)auint); |
698 | PUSHs(sv_2mortal(sv)); |
699 | } |
700 | } |
701 | break; |
702 | case 'l': |
703 | #if LONGSIZE == SIZE32 |
704 | along = (strend - s) / SIZE32; |
705 | #else |
706 | along = (strend - s) / (natint ? sizeof(long) : SIZE32); |
707 | #endif |
708 | if (len > along) |
709 | len = along; |
710 | if (checksum) { |
711 | #if LONGSIZE != SIZE32 |
712 | if (natint) { |
713 | while (len-- > 0) { |
714 | COPYNN(s, &along, sizeof(long)); |
715 | s += sizeof(long); |
716 | if (checksum > 32) |
717 | cdouble += (NV)along; |
718 | else |
719 | culong += along; |
720 | } |
721 | } |
722 | else |
723 | #endif |
724 | { |
725 | while (len-- > 0) { |
726 | #if LONGSIZE > SIZE32 && INTSIZE == SIZE32 |
727 | I32 along; |
728 | #endif |
729 | COPY32(s, &along); |
730 | #if LONGSIZE > SIZE32 |
731 | if (along > 2147483647) |
732 | along -= 4294967296; |
733 | #endif |
734 | s += SIZE32; |
735 | if (checksum > 32) |
736 | cdouble += (NV)along; |
737 | else |
738 | culong += along; |
739 | } |
740 | } |
741 | } |
742 | else { |
743 | EXTEND(SP, len); |
744 | EXTEND_MORTAL(len); |
745 | #if LONGSIZE != SIZE32 |
746 | if (natint) { |
747 | while (len-- > 0) { |
748 | COPYNN(s, &along, sizeof(long)); |
749 | s += sizeof(long); |
750 | sv = NEWSV(42, 0); |
751 | sv_setiv(sv, (IV)along); |
752 | PUSHs(sv_2mortal(sv)); |
753 | } |
754 | } |
755 | else |
756 | #endif |
757 | { |
758 | while (len-- > 0) { |
759 | #if LONGSIZE > SIZE32 && INTSIZE == SIZE32 |
760 | I32 along; |
761 | #endif |
762 | COPY32(s, &along); |
763 | #if LONGSIZE > SIZE32 |
764 | if (along > 2147483647) |
765 | along -= 4294967296; |
766 | #endif |
767 | s += SIZE32; |
768 | sv = NEWSV(42, 0); |
769 | sv_setiv(sv, (IV)along); |
770 | PUSHs(sv_2mortal(sv)); |
771 | } |
772 | } |
773 | } |
774 | break; |
775 | case 'V': |
776 | case 'N': |
777 | case 'L': |
778 | #if LONGSIZE == SIZE32 |
779 | along = (strend - s) / SIZE32; |
780 | #else |
781 | unatint = natint && datumtype == 'L'; |
782 | along = (strend - s) / (unatint ? sizeof(unsigned long) : SIZE32); |
783 | #endif |
784 | if (len > along) |
785 | len = along; |
786 | if (checksum) { |
787 | #if LONGSIZE != SIZE32 |
788 | if (unatint) { |
789 | unsigned long aulong; |
790 | while (len-- > 0) { |
791 | COPYNN(s, &aulong, sizeof(unsigned long)); |
792 | s += sizeof(unsigned long); |
793 | if (checksum > 32) |
794 | cdouble += (NV)aulong; |
795 | else |
796 | culong += aulong; |
797 | } |
798 | } |
799 | else |
800 | #endif |
801 | { |
802 | while (len-- > 0) { |
803 | COPY32(s, &aulong); |
804 | s += SIZE32; |
805 | #ifdef HAS_NTOHL |
806 | if (datumtype == 'N') |
807 | aulong = PerlSock_ntohl(aulong); |
808 | #endif |
809 | #ifdef HAS_VTOHL |
810 | if (datumtype == 'V') |
811 | aulong = vtohl(aulong); |
812 | #endif |
813 | if (checksum > 32) |
814 | cdouble += (NV)aulong; |
815 | else |
816 | culong += aulong; |
817 | } |
818 | } |
819 | } |
820 | else { |
821 | EXTEND(SP, len); |
822 | EXTEND_MORTAL(len); |
823 | #if LONGSIZE != SIZE32 |
824 | if (unatint) { |
825 | unsigned long aulong; |
826 | while (len-- > 0) { |
827 | COPYNN(s, &aulong, sizeof(unsigned long)); |
828 | s += sizeof(unsigned long); |
829 | sv = NEWSV(43, 0); |
830 | sv_setuv(sv, (UV)aulong); |
831 | PUSHs(sv_2mortal(sv)); |
832 | } |
833 | } |
834 | else |
835 | #endif |
836 | { |
837 | while (len-- > 0) { |
838 | COPY32(s, &aulong); |
839 | s += SIZE32; |
840 | #ifdef HAS_NTOHL |
841 | if (datumtype == 'N') |
842 | aulong = PerlSock_ntohl(aulong); |
843 | #endif |
844 | #ifdef HAS_VTOHL |
845 | if (datumtype == 'V') |
846 | aulong = vtohl(aulong); |
847 | #endif |
848 | sv = NEWSV(43, 0); |
849 | sv_setuv(sv, (UV)aulong); |
850 | PUSHs(sv_2mortal(sv)); |
851 | } |
852 | } |
853 | } |
854 | break; |
855 | case 'p': |
856 | along = (strend - s) / sizeof(char*); |
857 | if (len > along) |
858 | len = along; |
859 | EXTEND(SP, len); |
860 | EXTEND_MORTAL(len); |
861 | while (len-- > 0) { |
862 | if (sizeof(char*) > strend - s) |
863 | break; |
864 | else { |
865 | Copy(s, &aptr, 1, char*); |
866 | s += sizeof(char*); |
867 | } |
868 | sv = NEWSV(44, 0); |
869 | if (aptr) |
870 | sv_setpv(sv, aptr); |
871 | PUSHs(sv_2mortal(sv)); |
872 | } |
873 | break; |
874 | case 'w': |
875 | EXTEND(SP, len); |
876 | EXTEND_MORTAL(len); |
877 | { |
878 | UV auv = 0; |
879 | U32 bytes = 0; |
880 | |
881 | while ((len > 0) && (s < strend)) { |
882 | auv = (auv << 7) | (*s & 0x7f); |
883 | /* UTF8_IS_XXXXX not right here - using constant 0x80 */ |
884 | if ((U8)(*s++) < 0x80) { |
885 | bytes = 0; |
886 | sv = NEWSV(40, 0); |
887 | sv_setuv(sv, auv); |
888 | PUSHs(sv_2mortal(sv)); |
889 | len--; |
890 | auv = 0; |
891 | } |
892 | else if (++bytes >= sizeof(UV)) { /* promote to string */ |
893 | char *t; |
894 | STRLEN n_a; |
895 | |
896 | sv = Perl_newSVpvf(aTHX_ "%.*"UVf, (int)TYPE_DIGITS(UV), auv); |
897 | while (s < strend) { |
898 | sv = mul128(sv, *s & 0x7f); |
899 | if (!(*s++ & 0x80)) { |
900 | bytes = 0; |
901 | break; |
902 | } |
903 | } |
904 | t = SvPV(sv, n_a); |
905 | while (*t == '0') |
906 | t++; |
907 | sv_chop(sv, t); |
908 | PUSHs(sv_2mortal(sv)); |
909 | len--; |
910 | auv = 0; |
911 | } |
912 | } |
913 | if ((s >= strend) && bytes) |
914 | DIE(aTHX_ "Unterminated compressed integer"); |
915 | } |
916 | break; |
917 | case 'P': |
918 | EXTEND(SP, 1); |
919 | if (sizeof(char*) > strend - s) |
920 | break; |
921 | else { |
922 | Copy(s, &aptr, 1, char*); |
923 | s += sizeof(char*); |
924 | } |
925 | sv = NEWSV(44, 0); |
926 | if (aptr) |
927 | sv_setpvn(sv, aptr, len); |
928 | PUSHs(sv_2mortal(sv)); |
929 | break; |
930 | #ifdef HAS_QUAD |
931 | case 'q': |
932 | along = (strend - s) / sizeof(Quad_t); |
933 | if (len > along) |
934 | len = along; |
935 | EXTEND(SP, len); |
936 | EXTEND_MORTAL(len); |
937 | while (len-- > 0) { |
938 | if (s + sizeof(Quad_t) > strend) |
939 | aquad = 0; |
940 | else { |
941 | Copy(s, &aquad, 1, Quad_t); |
942 | s += sizeof(Quad_t); |
943 | } |
944 | sv = NEWSV(42, 0); |
945 | if (aquad >= IV_MIN && aquad <= IV_MAX) |
946 | sv_setiv(sv, (IV)aquad); |
947 | else |
948 | sv_setnv(sv, (NV)aquad); |
949 | PUSHs(sv_2mortal(sv)); |
950 | } |
951 | break; |
952 | case 'Q': |
953 | along = (strend - s) / sizeof(Quad_t); |
954 | if (len > along) |
955 | len = along; |
956 | EXTEND(SP, len); |
957 | EXTEND_MORTAL(len); |
958 | while (len-- > 0) { |
959 | if (s + sizeof(Uquad_t) > strend) |
960 | auquad = 0; |
961 | else { |
962 | Copy(s, &auquad, 1, Uquad_t); |
963 | s += sizeof(Uquad_t); |
964 | } |
965 | sv = NEWSV(43, 0); |
966 | if (auquad <= UV_MAX) |
967 | sv_setuv(sv, (UV)auquad); |
968 | else |
969 | sv_setnv(sv, (NV)auquad); |
970 | PUSHs(sv_2mortal(sv)); |
971 | } |
972 | break; |
973 | #endif |
974 | /* float and double added gnb@melba.bby.oz.au 22/11/89 */ |
975 | case 'f': |
976 | case 'F': |
977 | along = (strend - s) / sizeof(float); |
978 | if (len > along) |
979 | len = along; |
980 | if (checksum) { |
981 | while (len-- > 0) { |
982 | Copy(s, &afloat, 1, float); |
983 | s += sizeof(float); |
984 | cdouble += afloat; |
985 | } |
986 | } |
987 | else { |
988 | EXTEND(SP, len); |
989 | EXTEND_MORTAL(len); |
990 | while (len-- > 0) { |
991 | Copy(s, &afloat, 1, float); |
992 | s += sizeof(float); |
993 | sv = NEWSV(47, 0); |
994 | sv_setnv(sv, (NV)afloat); |
995 | PUSHs(sv_2mortal(sv)); |
996 | } |
997 | } |
998 | break; |
999 | case 'd': |
1000 | case 'D': |
1001 | along = (strend - s) / sizeof(double); |
1002 | if (len > along) |
1003 | len = along; |
1004 | if (checksum) { |
1005 | while (len-- > 0) { |
1006 | Copy(s, &adouble, 1, double); |
1007 | s += sizeof(double); |
1008 | cdouble += adouble; |
1009 | } |
1010 | } |
1011 | else { |
1012 | EXTEND(SP, len); |
1013 | EXTEND_MORTAL(len); |
1014 | while (len-- > 0) { |
1015 | Copy(s, &adouble, 1, double); |
1016 | s += sizeof(double); |
1017 | sv = NEWSV(48, 0); |
1018 | sv_setnv(sv, (NV)adouble); |
1019 | PUSHs(sv_2mortal(sv)); |
1020 | } |
1021 | } |
1022 | break; |
1023 | case 'u': |
1024 | /* MKS: |
1025 | * Initialise the decode mapping. By using a table driven |
1026 | * algorithm, the code will be character-set independent |
1027 | * (and just as fast as doing character arithmetic) |
1028 | */ |
1029 | if (PL_uudmap['M'] == 0) { |
1030 | int i; |
1031 | |
1032 | for (i = 0; i < sizeof(PL_uuemap); i += 1) |
1033 | PL_uudmap[(U8)PL_uuemap[i]] = i; |
1034 | /* |
1035 | * Because ' ' and '`' map to the same value, |
1036 | * we need to decode them both the same. |
1037 | */ |
1038 | PL_uudmap[' '] = 0; |
1039 | } |
1040 | |
1041 | along = (strend - s) * 3 / 4; |
1042 | sv = NEWSV(42, along); |
1043 | if (along) |
1044 | SvPOK_on(sv); |
1045 | while (s < strend && *s > ' ' && ISUUCHAR(*s)) { |
1046 | I32 a, b, c, d; |
1047 | char hunk[4]; |
1048 | |
1049 | hunk[3] = '\0'; |
1050 | len = PL_uudmap[*(U8*)s++] & 077; |
1051 | while (len > 0) { |
1052 | if (s < strend && ISUUCHAR(*s)) |
1053 | a = PL_uudmap[*(U8*)s++] & 077; |
1054 | else |
1055 | a = 0; |
1056 | if (s < strend && ISUUCHAR(*s)) |
1057 | b = PL_uudmap[*(U8*)s++] & 077; |
1058 | else |
1059 | b = 0; |
1060 | if (s < strend && ISUUCHAR(*s)) |
1061 | c = PL_uudmap[*(U8*)s++] & 077; |
1062 | else |
1063 | c = 0; |
1064 | if (s < strend && ISUUCHAR(*s)) |
1065 | d = PL_uudmap[*(U8*)s++] & 077; |
1066 | else |
1067 | d = 0; |
1068 | hunk[0] = (a << 2) | (b >> 4); |
1069 | hunk[1] = (b << 4) | (c >> 2); |
1070 | hunk[2] = (c << 6) | d; |
1071 | sv_catpvn(sv, hunk, (len > 3) ? 3 : len); |
1072 | len -= 3; |
1073 | } |
1074 | if (*s == '\n') |
1075 | s++; |
1076 | else if (s[1] == '\n') /* possible checksum byte */ |
1077 | s += 2; |
1078 | } |
1079 | XPUSHs(sv_2mortal(sv)); |
1080 | break; |
1081 | } |
1082 | if (checksum) { |
1083 | sv = NEWSV(42, 0); |
1084 | if (strchr("fFdD", datumtype) || |
1085 | (checksum > 32 && strchr("iIlLNU", datumtype)) ) { |
1086 | NV trouble; |
1087 | |
1088 | adouble = 1.0; |
1089 | while (checksum >= 16) { |
1090 | checksum -= 16; |
1091 | adouble *= 65536.0; |
1092 | } |
1093 | while (checksum >= 4) { |
1094 | checksum -= 4; |
1095 | adouble *= 16.0; |
1096 | } |
1097 | while (checksum--) |
1098 | adouble *= 2.0; |
1099 | along = (1 << checksum) - 1; |
1100 | while (cdouble < 0.0) |
1101 | cdouble += adouble; |
1102 | cdouble = Perl_modf(cdouble / adouble, &trouble) * adouble; |
1103 | sv_setnv(sv, cdouble); |
1104 | } |
1105 | else { |
1106 | if (checksum < 32) { |
1107 | aulong = (1 << checksum) - 1; |
1108 | culong &= aulong; |
1109 | } |
1110 | sv_setuv(sv, (UV)culong); |
1111 | } |
1112 | XPUSHs(sv_2mortal(sv)); |
1113 | checksum = 0; |
1114 | } |
1115 | } |
1116 | if (SP - PL_stack_base == start_sp_offset && gimme == G_SCALAR) |
1117 | PUSHs(&PL_sv_undef); |
1118 | RETURN; |
1119 | } |
1120 | |
1121 | STATIC void |
1122 | S_doencodes(pTHX_ register SV *sv, register char *s, register I32 len) |
1123 | { |
1124 | char hunk[5]; |
1125 | |
1126 | *hunk = PL_uuemap[len]; |
1127 | sv_catpvn(sv, hunk, 1); |
1128 | hunk[4] = '\0'; |
1129 | while (len > 2) { |
1130 | hunk[0] = PL_uuemap[(077 & (*s >> 2))]; |
1131 | hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((s[1] >> 4) & 017)))]; |
1132 | hunk[2] = PL_uuemap[(077 & (((s[1] << 2) & 074) | ((s[2] >> 6) & 03)))]; |
1133 | hunk[3] = PL_uuemap[(077 & (s[2] & 077))]; |
1134 | sv_catpvn(sv, hunk, 4); |
1135 | s += 3; |
1136 | len -= 3; |
1137 | } |
1138 | if (len > 0) { |
1139 | char r = (len > 1 ? s[1] : '\0'); |
1140 | hunk[0] = PL_uuemap[(077 & (*s >> 2))]; |
1141 | hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((r >> 4) & 017)))]; |
1142 | hunk[2] = PL_uuemap[(077 & ((r << 2) & 074))]; |
1143 | hunk[3] = PL_uuemap[0]; |
1144 | sv_catpvn(sv, hunk, 4); |
1145 | } |
1146 | sv_catpvn(sv, "\n", 1); |
1147 | } |
1148 | |
1149 | STATIC SV * |
1150 | S_is_an_int(pTHX_ char *s, STRLEN l) |
1151 | { |
1152 | STRLEN n_a; |
1153 | SV *result = newSVpvn(s, l); |
1154 | char *result_c = SvPV(result, n_a); /* convenience */ |
1155 | char *out = result_c; |
1156 | bool skip = 1; |
1157 | bool ignore = 0; |
1158 | |
1159 | while (*s) { |
1160 | switch (*s) { |
1161 | case ' ': |
1162 | break; |
1163 | case '+': |
1164 | if (!skip) { |
1165 | SvREFCNT_dec(result); |
1166 | return (NULL); |
1167 | } |
1168 | break; |
1169 | case '0': |
1170 | case '1': |
1171 | case '2': |
1172 | case '3': |
1173 | case '4': |
1174 | case '5': |
1175 | case '6': |
1176 | case '7': |
1177 | case '8': |
1178 | case '9': |
1179 | skip = 0; |
1180 | if (!ignore) { |
1181 | *(out++) = *s; |
1182 | } |
1183 | break; |
1184 | case '.': |
1185 | ignore = 1; |
1186 | break; |
1187 | default: |
1188 | SvREFCNT_dec(result); |
1189 | return (NULL); |
1190 | } |
1191 | s++; |
1192 | } |
1193 | *(out++) = '\0'; |
1194 | SvCUR_set(result, out - result_c); |
1195 | return (result); |
1196 | } |
1197 | |
1198 | /* pnum must be '\0' terminated */ |
1199 | STATIC int |
1200 | S_div128(pTHX_ SV *pnum, bool *done) |
1201 | { |
1202 | STRLEN len; |
1203 | char *s = SvPV(pnum, len); |
1204 | int m = 0; |
1205 | int r = 0; |
1206 | char *t = s; |
1207 | |
1208 | *done = 1; |
1209 | while (*t) { |
1210 | int i; |
1211 | |
1212 | i = m * 10 + (*t - '0'); |
1213 | m = i & 0x7F; |
1214 | r = (i >> 7); /* r < 10 */ |
1215 | if (r) { |
1216 | *done = 0; |
1217 | } |
1218 | *(t++) = '0' + r; |
1219 | } |
1220 | *(t++) = '\0'; |
1221 | SvCUR_set(pnum, (STRLEN) (t - s)); |
1222 | return (m); |
1223 | } |
1224 | |
1225 | |
1226 | PP(pp_pack) |
1227 | { |
1228 | dSP; dMARK; dORIGMARK; dTARGET; |
1229 | register SV *cat = TARG; |
1230 | register I32 items; |
1231 | STRLEN fromlen; |
1232 | register char *pat = SvPVx(*++MARK, fromlen); |
1233 | char *patcopy; |
1234 | register char *patend = pat + fromlen; |
1235 | register I32 len; |
1236 | I32 datumtype; |
1237 | SV *fromstr; |
1238 | /*SUPPRESS 442*/ |
1239 | static char null10[] = {0,0,0,0,0,0,0,0,0,0}; |
1240 | static char *space10 = " "; |
1241 | |
1242 | /* These must not be in registers: */ |
1243 | char achar; |
1244 | I16 ashort; |
1245 | int aint; |
1246 | unsigned int auint; |
1247 | I32 along; |
1248 | U32 aulong; |
1249 | #ifdef HAS_QUAD |
1250 | Quad_t aquad; |
1251 | Uquad_t auquad; |
1252 | #endif |
1253 | char *aptr; |
1254 | float afloat; |
1255 | double adouble; |
1256 | int commas = 0; |
1257 | #ifdef PERL_NATINT_PACK |
1258 | int natint; /* native integer */ |
1259 | #endif |
1260 | |
1261 | items = SP - MARK; |
1262 | MARK++; |
1263 | sv_setpvn(cat, "", 0); |
1264 | patcopy = pat; |
1265 | while (pat < patend) { |
1266 | SV *lengthcode = Nullsv; |
1267 | #define NEXTFROM ( lengthcode ? lengthcode : items-- > 0 ? *MARK++ : &PL_sv_no) |
1268 | datumtype = *pat++ & 0xFF; |
1269 | #ifdef PERL_NATINT_PACK |
1270 | natint = 0; |
1271 | #endif |
1272 | if (isSPACE(datumtype)) { |
1273 | patcopy++; |
1274 | continue; |
1275 | } |
1276 | #ifndef PACKED_IS_OCTETS |
1277 | if (datumtype == 'U' && pat == patcopy+1) |
1278 | SvUTF8_on(cat); |
1279 | #endif |
1280 | if (datumtype == '#') { |
1281 | while (pat < patend && *pat != '\n') |
1282 | pat++; |
1283 | continue; |
1284 | } |
1285 | if (*pat == '!') { |
1286 | char *natstr = "sSiIlL"; |
1287 | |
1288 | if (strchr(natstr, datumtype)) { |
1289 | #ifdef PERL_NATINT_PACK |
1290 | natint = 1; |
1291 | #endif |
1292 | pat++; |
1293 | } |
1294 | else |
1295 | DIE(aTHX_ "'!' allowed only after types %s", natstr); |
1296 | } |
1297 | if (*pat == '*') { |
1298 | len = strchr("@Xxu", datumtype) ? 0 : items; |
1299 | pat++; |
1300 | } |
1301 | else if (isDIGIT(*pat)) { |
1302 | len = *pat++ - '0'; |
1303 | while (isDIGIT(*pat)) { |
1304 | len = (len * 10) + (*pat++ - '0'); |
1305 | if (len < 0) |
1306 | DIE(aTHX_ "Repeat count in pack overflows"); |
1307 | } |
1308 | } |
1309 | else |
1310 | len = 1; |
1311 | if (*pat == '/') { |
1312 | ++pat; |
1313 | if ((*pat != 'a' && *pat != 'A' && *pat != 'Z') || pat[1] != '*') |
1314 | DIE(aTHX_ "/ must be followed by a*, A* or Z*"); |
1315 | lengthcode = sv_2mortal(newSViv(sv_len(items > 0 |
1316 | ? *MARK : &PL_sv_no) |
1317 | + (*pat == 'Z' ? 1 : 0))); |
1318 | } |
1319 | switch(datumtype) { |
1320 | default: |
1321 | DIE(aTHX_ "Invalid type in pack: '%c'", (int)datumtype); |
1322 | case ',': /* grandfather in commas but with a warning */ |
1323 | if (commas++ == 0 && ckWARN(WARN_PACK)) |
1324 | Perl_warner(aTHX_ WARN_PACK, |
1325 | "Invalid type in pack: '%c'", (int)datumtype); |
1326 | break; |
1327 | case '%': |
1328 | DIE(aTHX_ "%% may only be used in unpack"); |
1329 | case '@': |
1330 | len -= SvCUR(cat); |
1331 | if (len > 0) |
1332 | goto grow; |
1333 | len = -len; |
1334 | if (len > 0) |
1335 | goto shrink; |
1336 | break; |
1337 | case 'X': |
1338 | shrink: |
1339 | if (SvCUR(cat) < len) |
1340 | DIE(aTHX_ "X outside of string"); |
1341 | SvCUR(cat) -= len; |
1342 | *SvEND(cat) = '\0'; |
1343 | break; |
1344 | case 'x': |
1345 | grow: |
1346 | while (len >= 10) { |
1347 | sv_catpvn(cat, null10, 10); |
1348 | len -= 10; |
1349 | } |
1350 | sv_catpvn(cat, null10, len); |
1351 | break; |
1352 | case 'A': |
1353 | case 'Z': |
1354 | case 'a': |
1355 | fromstr = NEXTFROM; |
1356 | aptr = SvPV(fromstr, fromlen); |
1357 | if (pat[-1] == '*') { |
1358 | len = fromlen; |
1359 | if (datumtype == 'Z') |
1360 | ++len; |
1361 | } |
1362 | if (fromlen >= len) { |
1363 | sv_catpvn(cat, aptr, len); |
1364 | if (datumtype == 'Z') |
1365 | *(SvEND(cat)-1) = '\0'; |
1366 | } |
1367 | else { |
1368 | sv_catpvn(cat, aptr, fromlen); |
1369 | len -= fromlen; |
1370 | if (datumtype == 'A') { |
1371 | while (len >= 10) { |
1372 | sv_catpvn(cat, space10, 10); |
1373 | len -= 10; |
1374 | } |
1375 | sv_catpvn(cat, space10, len); |
1376 | } |
1377 | else { |
1378 | while (len >= 10) { |
1379 | sv_catpvn(cat, null10, 10); |
1380 | len -= 10; |
1381 | } |
1382 | sv_catpvn(cat, null10, len); |
1383 | } |
1384 | } |
1385 | break; |
1386 | case 'B': |
1387 | case 'b': |
1388 | { |
1389 | register char *str; |
1390 | I32 saveitems; |
1391 | |
1392 | fromstr = NEXTFROM; |
1393 | saveitems = items; |
1394 | str = SvPV(fromstr, fromlen); |
1395 | if (pat[-1] == '*') |
1396 | len = fromlen; |
1397 | aint = SvCUR(cat); |
1398 | SvCUR(cat) += (len+7)/8; |
1399 | SvGROW(cat, SvCUR(cat) + 1); |
1400 | aptr = SvPVX(cat) + aint; |
1401 | if (len > fromlen) |
1402 | len = fromlen; |
1403 | aint = len; |
1404 | items = 0; |
1405 | if (datumtype == 'B') { |
1406 | for (len = 0; len++ < aint;) { |
1407 | items |= *str++ & 1; |
1408 | if (len & 7) |
1409 | items <<= 1; |
1410 | else { |
1411 | *aptr++ = items & 0xff; |
1412 | items = 0; |
1413 | } |
1414 | } |
1415 | } |
1416 | else { |
1417 | for (len = 0; len++ < aint;) { |
1418 | if (*str++ & 1) |
1419 | items |= 128; |
1420 | if (len & 7) |
1421 | items >>= 1; |
1422 | else { |
1423 | *aptr++ = items & 0xff; |
1424 | items = 0; |
1425 | } |
1426 | } |
1427 | } |
1428 | if (aint & 7) { |
1429 | if (datumtype == 'B') |
1430 | items <<= 7 - (aint & 7); |
1431 | else |
1432 | items >>= 7 - (aint & 7); |
1433 | *aptr++ = items & 0xff; |
1434 | } |
1435 | str = SvPVX(cat) + SvCUR(cat); |
1436 | while (aptr <= str) |
1437 | *aptr++ = '\0'; |
1438 | |
1439 | items = saveitems; |
1440 | } |
1441 | break; |
1442 | case 'H': |
1443 | case 'h': |
1444 | { |
1445 | register char *str; |
1446 | I32 saveitems; |
1447 | |
1448 | fromstr = NEXTFROM; |
1449 | saveitems = items; |
1450 | str = SvPV(fromstr, fromlen); |
1451 | if (pat[-1] == '*') |
1452 | len = fromlen; |
1453 | aint = SvCUR(cat); |
1454 | SvCUR(cat) += (len+1)/2; |
1455 | SvGROW(cat, SvCUR(cat) + 1); |
1456 | aptr = SvPVX(cat) + aint; |
1457 | if (len > fromlen) |
1458 | len = fromlen; |
1459 | aint = len; |
1460 | items = 0; |
1461 | if (datumtype == 'H') { |
1462 | for (len = 0; len++ < aint;) { |
1463 | if (isALPHA(*str)) |
1464 | items |= ((*str++ & 15) + 9) & 15; |
1465 | else |
1466 | items |= *str++ & 15; |
1467 | if (len & 1) |
1468 | items <<= 4; |
1469 | else { |
1470 | *aptr++ = items & 0xff; |
1471 | items = 0; |
1472 | } |
1473 | } |
1474 | } |
1475 | else { |
1476 | for (len = 0; len++ < aint;) { |
1477 | if (isALPHA(*str)) |
1478 | items |= (((*str++ & 15) + 9) & 15) << 4; |
1479 | else |
1480 | items |= (*str++ & 15) << 4; |
1481 | if (len & 1) |
1482 | items >>= 4; |
1483 | else { |
1484 | *aptr++ = items & 0xff; |
1485 | items = 0; |
1486 | } |
1487 | } |
1488 | } |
1489 | if (aint & 1) |
1490 | *aptr++ = items & 0xff; |
1491 | str = SvPVX(cat) + SvCUR(cat); |
1492 | while (aptr <= str) |
1493 | *aptr++ = '\0'; |
1494 | |
1495 | items = saveitems; |
1496 | } |
1497 | break; |
1498 | case 'C': |
1499 | case 'c': |
1500 | while (len-- > 0) { |
1501 | fromstr = NEXTFROM; |
1502 | switch (datumtype) { |
1503 | case 'C': |
1504 | aint = SvIV(fromstr); |
1505 | if ((aint < 0 || aint > 255) && |
1506 | ckWARN(WARN_PACK)) |
1507 | Perl_warner(aTHX_ WARN_PACK, |
1508 | "Character in \"C\" format wrapped"); |
1509 | achar = aint & 255; |
1510 | sv_catpvn(cat, &achar, sizeof(char)); |
1511 | break; |
1512 | case 'c': |
1513 | aint = SvIV(fromstr); |
1514 | if ((aint < -128 || aint > 127) && |
1515 | ckWARN(WARN_PACK)) |
1516 | Perl_warner(aTHX_ WARN_PACK, |
1517 | "Character in \"c\" format wrapped"); |
1518 | achar = aint & 255; |
1519 | sv_catpvn(cat, &achar, sizeof(char)); |
1520 | break; |
1521 | } |
1522 | } |
1523 | break; |
1524 | case 'U': |
1525 | while (len-- > 0) { |
1526 | fromstr = NEXTFROM; |
1527 | auint = SvUV(fromstr); |
1528 | SvGROW(cat, SvCUR(cat) + UTF8_MAXLEN + 1); |
1529 | SvCUR_set(cat, (char*)uvchr_to_utf8((U8*)SvEND(cat),auint) |
1530 | - SvPVX(cat)); |
1531 | } |
1532 | *SvEND(cat) = '\0'; |
1533 | break; |
1534 | /* Float and double added by gnb@melba.bby.oz.au 22/11/89 */ |
1535 | case 'f': |
1536 | case 'F': |
1537 | while (len-- > 0) { |
1538 | fromstr = NEXTFROM; |
1539 | afloat = (float)SvNV(fromstr); |
1540 | sv_catpvn(cat, (char *)&afloat, sizeof (float)); |
1541 | } |
1542 | break; |
1543 | case 'd': |
1544 | case 'D': |
1545 | while (len-- > 0) { |
1546 | fromstr = NEXTFROM; |
1547 | adouble = (double)SvNV(fromstr); |
1548 | sv_catpvn(cat, (char *)&adouble, sizeof (double)); |
1549 | } |
1550 | break; |
1551 | case 'n': |
1552 | while (len-- > 0) { |
1553 | fromstr = NEXTFROM; |
1554 | ashort = (I16)SvIV(fromstr); |
1555 | #ifdef HAS_HTONS |
1556 | ashort = PerlSock_htons(ashort); |
1557 | #endif |
1558 | CAT16(cat, &ashort); |
1559 | } |
1560 | break; |
1561 | case 'v': |
1562 | while (len-- > 0) { |
1563 | fromstr = NEXTFROM; |
1564 | ashort = (I16)SvIV(fromstr); |
1565 | #ifdef HAS_HTOVS |
1566 | ashort = htovs(ashort); |
1567 | #endif |
1568 | CAT16(cat, &ashort); |
1569 | } |
1570 | break; |
1571 | case 'S': |
1572 | #if SHORTSIZE != SIZE16 |
1573 | if (natint) { |
1574 | unsigned short aushort; |
1575 | |
1576 | while (len-- > 0) { |
1577 | fromstr = NEXTFROM; |
1578 | aushort = SvUV(fromstr); |
1579 | sv_catpvn(cat, (char *)&aushort, sizeof(unsigned short)); |
1580 | } |
1581 | } |
1582 | else |
1583 | #endif |
1584 | { |
1585 | U16 aushort; |
1586 | |
1587 | while (len-- > 0) { |
1588 | fromstr = NEXTFROM; |
1589 | aushort = (U16)SvUV(fromstr); |
1590 | CAT16(cat, &aushort); |
1591 | } |
1592 | |
1593 | } |
1594 | break; |
1595 | case 's': |
1596 | #if SHORTSIZE != SIZE16 |
1597 | if (natint) { |
1598 | short ashort; |
1599 | |
1600 | while (len-- > 0) { |
1601 | fromstr = NEXTFROM; |
1602 | ashort = SvIV(fromstr); |
1603 | sv_catpvn(cat, (char *)&ashort, sizeof(short)); |
1604 | } |
1605 | } |
1606 | else |
1607 | #endif |
1608 | { |
1609 | while (len-- > 0) { |
1610 | fromstr = NEXTFROM; |
1611 | ashort = (I16)SvIV(fromstr); |
1612 | CAT16(cat, &ashort); |
1613 | } |
1614 | } |
1615 | break; |
1616 | case 'I': |
1617 | while (len-- > 0) { |
1618 | fromstr = NEXTFROM; |
1619 | auint = SvUV(fromstr); |
1620 | sv_catpvn(cat, (char*)&auint, sizeof(unsigned int)); |
1621 | } |
1622 | break; |
1623 | case 'w': |
1624 | while (len-- > 0) { |
1625 | fromstr = NEXTFROM; |
1626 | adouble = Perl_floor(SvNV(fromstr)); |
1627 | |
1628 | if (adouble < 0) |
1629 | DIE(aTHX_ "Cannot compress negative numbers"); |
1630 | |
1631 | if ( |
1632 | #if UVSIZE > 4 && UVSIZE >= NVSIZE |
1633 | adouble <= 0xffffffff |
1634 | #else |
1635 | # ifdef CXUX_BROKEN_CONSTANT_CONVERT |
1636 | adouble <= UV_MAX_cxux |
1637 | # else |
1638 | adouble <= UV_MAX |
1639 | # endif |
1640 | #endif |
1641 | ) |
1642 | { |
1643 | char buf[1 + sizeof(UV)]; |
1644 | char *in = buf + sizeof(buf); |
1645 | UV auv = U_V(adouble); |
1646 | |
1647 | do { |
1648 | *--in = (auv & 0x7f) | 0x80; |
1649 | auv >>= 7; |
1650 | } while (auv); |
1651 | buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */ |
1652 | sv_catpvn(cat, in, (buf + sizeof(buf)) - in); |
1653 | } |
1654 | else if (SvPOKp(fromstr)) { /* decimal string arithmetics */ |
1655 | char *from, *result, *in; |
1656 | SV *norm; |
1657 | STRLEN len; |
1658 | bool done; |
1659 | |
1660 | /* Copy string and check for compliance */ |
1661 | from = SvPV(fromstr, len); |
1662 | if ((norm = is_an_int(from, len)) == NULL) |
1663 | DIE(aTHX_ "can compress only unsigned integer"); |
1664 | |
1665 | New('w', result, len, char); |
1666 | in = result + len; |
1667 | done = FALSE; |
1668 | while (!done) |
1669 | *--in = div128(norm, &done) | 0x80; |
1670 | result[len - 1] &= 0x7F; /* clear continue bit */ |
1671 | sv_catpvn(cat, in, (result + len) - in); |
1672 | Safefree(result); |
1673 | SvREFCNT_dec(norm); /* free norm */ |
1674 | } |
1675 | else if (SvNOKp(fromstr)) { |
1676 | char buf[sizeof(double) * 2]; /* 8/7 <= 2 */ |
1677 | char *in = buf + sizeof(buf); |
1678 | |
1679 | do { |
1680 | double next = floor(adouble / 128); |
1681 | *--in = (unsigned char)(adouble - (next * 128)) | 0x80; |
1682 | if (in <= buf) /* this cannot happen ;-) */ |
1683 | DIE(aTHX_ "Cannot compress integer"); |
a6ec74c1 |
1684 | adouble = next; |
1685 | } while (adouble > 0); |
1686 | buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */ |
1687 | sv_catpvn(cat, in, (buf + sizeof(buf)) - in); |
1688 | } |
1689 | else |
1690 | DIE(aTHX_ "Cannot compress non integer"); |
1691 | } |
1692 | break; |
1693 | case 'i': |
1694 | while (len-- > 0) { |
1695 | fromstr = NEXTFROM; |
1696 | aint = SvIV(fromstr); |
1697 | sv_catpvn(cat, (char*)&aint, sizeof(int)); |
1698 | } |
1699 | break; |
1700 | case 'N': |
1701 | while (len-- > 0) { |
1702 | fromstr = NEXTFROM; |
1703 | aulong = SvUV(fromstr); |
1704 | #ifdef HAS_HTONL |
1705 | aulong = PerlSock_htonl(aulong); |
1706 | #endif |
1707 | CAT32(cat, &aulong); |
1708 | } |
1709 | break; |
1710 | case 'V': |
1711 | while (len-- > 0) { |
1712 | fromstr = NEXTFROM; |
1713 | aulong = SvUV(fromstr); |
1714 | #ifdef HAS_HTOVL |
1715 | aulong = htovl(aulong); |
1716 | #endif |
1717 | CAT32(cat, &aulong); |
1718 | } |
1719 | break; |
1720 | case 'L': |
1721 | #if LONGSIZE != SIZE32 |
1722 | if (natint) { |
1723 | unsigned long aulong; |
1724 | |
1725 | while (len-- > 0) { |
1726 | fromstr = NEXTFROM; |
1727 | aulong = SvUV(fromstr); |
1728 | sv_catpvn(cat, (char *)&aulong, sizeof(unsigned long)); |
1729 | } |
1730 | } |
1731 | else |
1732 | #endif |
1733 | { |
1734 | while (len-- > 0) { |
1735 | fromstr = NEXTFROM; |
1736 | aulong = SvUV(fromstr); |
1737 | CAT32(cat, &aulong); |
1738 | } |
1739 | } |
1740 | break; |
1741 | case 'l': |
1742 | #if LONGSIZE != SIZE32 |
1743 | if (natint) { |
1744 | long along; |
1745 | |
1746 | while (len-- > 0) { |
1747 | fromstr = NEXTFROM; |
1748 | along = SvIV(fromstr); |
1749 | sv_catpvn(cat, (char *)&along, sizeof(long)); |
1750 | } |
1751 | } |
1752 | else |
1753 | #endif |
1754 | { |
1755 | while (len-- > 0) { |
1756 | fromstr = NEXTFROM; |
1757 | along = SvIV(fromstr); |
1758 | CAT32(cat, &along); |
1759 | } |
1760 | } |
1761 | break; |
1762 | #ifdef HAS_QUAD |
1763 | case 'Q': |
1764 | while (len-- > 0) { |
1765 | fromstr = NEXTFROM; |
1766 | auquad = (Uquad_t)SvUV(fromstr); |
1767 | sv_catpvn(cat, (char*)&auquad, sizeof(Uquad_t)); |
1768 | } |
1769 | break; |
1770 | case 'q': |
1771 | while (len-- > 0) { |
1772 | fromstr = NEXTFROM; |
1773 | aquad = (Quad_t)SvIV(fromstr); |
1774 | sv_catpvn(cat, (char*)&aquad, sizeof(Quad_t)); |
1775 | } |
1776 | break; |
1777 | #endif |
1778 | case 'P': |
1779 | len = 1; /* assume SV is correct length */ |
1780 | /* FALL THROUGH */ |
1781 | case 'p': |
1782 | while (len-- > 0) { |
1783 | fromstr = NEXTFROM; |
1784 | if (fromstr == &PL_sv_undef) |
1785 | aptr = NULL; |
1786 | else { |
1787 | STRLEN n_a; |
1788 | /* XXX better yet, could spirit away the string to |
1789 | * a safe spot and hang on to it until the result |
1790 | * of pack() (and all copies of the result) are |
1791 | * gone. |
1792 | */ |
1793 | if (ckWARN(WARN_PACK) && (SvTEMP(fromstr) |
1794 | || (SvPADTMP(fromstr) |
1795 | && !SvREADONLY(fromstr)))) |
1796 | { |
1797 | Perl_warner(aTHX_ WARN_PACK, |
1798 | "Attempt to pack pointer to temporary value"); |
1799 | } |
1800 | if (SvPOK(fromstr) || SvNIOK(fromstr)) |
1801 | aptr = SvPV(fromstr,n_a); |
1802 | else |
1803 | aptr = SvPV_force(fromstr,n_a); |
1804 | } |
1805 | sv_catpvn(cat, (char*)&aptr, sizeof(char*)); |
1806 | } |
1807 | break; |
1808 | case 'u': |
1809 | fromstr = NEXTFROM; |
1810 | aptr = SvPV(fromstr, fromlen); |
1811 | SvGROW(cat, fromlen * 4 / 3); |
1812 | if (len <= 1) |
1813 | len = 45; |
1814 | else |
1815 | len = len / 3 * 3; |
1816 | while (fromlen > 0) { |
1817 | I32 todo; |
1818 | |
1819 | if (fromlen > len) |
1820 | todo = len; |
1821 | else |
1822 | todo = fromlen; |
1823 | doencodes(cat, aptr, todo); |
1824 | fromlen -= todo; |
1825 | aptr += todo; |
1826 | } |
1827 | break; |
1828 | } |
1829 | } |
1830 | SvSETMAGIC(cat); |
1831 | SP = ORIGMARK; |
1832 | PUSHs(cat); |
1833 | RETURN; |
1834 | } |
1835 | #undef NEXTFROM |
1836 | |