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; |
fa8ec7c1 |
162 | UV culong = 0; |
a6ec74c1 |
163 | NV cdouble = 0.0; |
fa8ec7c1 |
164 | const int bits_in_uv = 8 * sizeof(culong); |
a6ec74c1 |
165 | int commas = 0; |
166 | int star; |
167 | #ifdef PERL_NATINT_PACK |
168 | int natint; /* native integer */ |
169 | int unatint; /* unsigned native integer */ |
170 | #endif |
35bcd338 |
171 | bool do_utf8 = DO_UTF8(right); |
a6ec74c1 |
172 | |
173 | if (gimme != G_ARRAY) { /* arrange to do first one only */ |
174 | /*SUPPRESS 530*/ |
fa8ec7c1 |
175 | /* Skipping spaces will be useful later on. */ |
176 | while (isSPACE(*pat)) |
177 | pat++; |
178 | /* Give up on optimisation of only doing first if the pattern |
179 | is getting too complex to parse. */ |
180 | if (*pat != '#') { |
181 | /* This pre-parser will let through certain invalid patterns |
182 | such as rows of !s, but the nothing that would cause multiple |
183 | conversions to be attempted. */ |
184 | char *here = pat; |
185 | bool seen_percent = FALSE; |
186 | if (*here == '%') |
187 | seen_percent = TRUE; |
188 | while (!isALPHA(*here) || *here == 'x') |
189 | here++; |
190 | if (strchr("aAZbBhHP", *here) || seen_percent) { |
191 | here++; |
192 | while (isDIGIT(*here) || *here == '*' || *here == '!') |
193 | here++; |
194 | } |
195 | else |
196 | here++; |
197 | patend = here; |
198 | } |
a6ec74c1 |
199 | } |
200 | while (pat < patend) { |
201 | reparse: |
202 | datumtype = *pat++ & 0xFF; |
203 | #ifdef PERL_NATINT_PACK |
204 | natint = 0; |
205 | #endif |
206 | if (isSPACE(datumtype)) |
207 | continue; |
208 | if (datumtype == '#') { |
209 | while (pat < patend && *pat != '\n') |
210 | pat++; |
211 | continue; |
212 | } |
213 | if (*pat == '!') { |
214 | char *natstr = "sSiIlL"; |
215 | |
216 | if (strchr(natstr, datumtype)) { |
217 | #ifdef PERL_NATINT_PACK |
218 | natint = 1; |
219 | #endif |
220 | pat++; |
221 | } |
222 | else |
223 | DIE(aTHX_ "'!' allowed only after types %s", natstr); |
224 | } |
225 | star = 0; |
fa8ec7c1 |
226 | if (pat >= patend) |
a6ec74c1 |
227 | len = 1; |
228 | else if (*pat == '*') { |
229 | len = strend - strbeg; /* long enough */ |
230 | pat++; |
231 | star = 1; |
232 | } |
233 | else if (isDIGIT(*pat)) { |
234 | len = *pat++ - '0'; |
235 | while (isDIGIT(*pat)) { |
236 | len = (len * 10) + (*pat++ - '0'); |
237 | if (len < 0) |
238 | DIE(aTHX_ "Repeat count in unpack overflows"); |
239 | } |
240 | } |
241 | else |
242 | len = (datumtype != '@'); |
243 | redo_switch: |
244 | switch(datumtype) { |
245 | default: |
246 | DIE(aTHX_ "Invalid type in unpack: '%c'", (int)datumtype); |
247 | case ',': /* grandfather in commas but with a warning */ |
248 | if (commas++ == 0 && ckWARN(WARN_UNPACK)) |
249 | Perl_warner(aTHX_ WARN_UNPACK, |
250 | "Invalid type in unpack: '%c'", (int)datumtype); |
251 | break; |
252 | case '%': |
253 | if (len == 1 && pat[-1] != '1') |
254 | len = 16; |
255 | checksum = len; |
256 | culong = 0; |
257 | cdouble = 0; |
258 | if (pat < patend) |
259 | goto reparse; |
260 | break; |
261 | case '@': |
262 | if (len > strend - strbeg) |
263 | DIE(aTHX_ "@ outside of string"); |
264 | s = strbeg + len; |
265 | break; |
266 | case 'X': |
267 | if (len > s - strbeg) |
268 | DIE(aTHX_ "X outside of string"); |
269 | s -= len; |
270 | break; |
271 | case 'x': |
272 | if (len > strend - s) |
273 | DIE(aTHX_ "x outside of string"); |
274 | s += len; |
275 | break; |
276 | case '/': |
277 | if (start_sp_offset >= SP - PL_stack_base) |
278 | DIE(aTHX_ "/ must follow a numeric type"); |
279 | datumtype = *pat++; |
280 | if (*pat == '*') |
281 | pat++; /* ignore '*' for compatibility with pack */ |
282 | if (isDIGIT(*pat)) |
283 | DIE(aTHX_ "/ cannot take a count" ); |
284 | len = POPi; |
285 | star = 0; |
286 | goto redo_switch; |
287 | case 'A': |
288 | case 'Z': |
289 | case 'a': |
290 | if (len > strend - s) |
291 | len = strend - s; |
292 | if (checksum) |
293 | goto uchar_checksum; |
294 | sv = NEWSV(35, len); |
295 | sv_setpvn(sv, s, len); |
296 | s += len; |
297 | if (datumtype == 'A' || datumtype == 'Z') { |
298 | aptr = s; /* borrow register */ |
299 | if (datumtype == 'Z') { /* 'Z' strips stuff after first null */ |
300 | s = SvPVX(sv); |
301 | while (*s) |
302 | s++; |
303 | } |
304 | else { /* 'A' strips both nulls and spaces */ |
305 | s = SvPVX(sv) + len - 1; |
306 | while (s >= SvPVX(sv) && (!*s || isSPACE(*s))) |
307 | s--; |
308 | *++s = '\0'; |
309 | } |
310 | SvCUR_set(sv, s - SvPVX(sv)); |
311 | s = aptr; /* unborrow register */ |
312 | } |
313 | XPUSHs(sv_2mortal(sv)); |
314 | break; |
315 | case 'B': |
316 | case 'b': |
317 | if (star || len > (strend - s) * 8) |
318 | len = (strend - s) * 8; |
319 | if (checksum) { |
320 | if (!PL_bitcount) { |
321 | Newz(601, PL_bitcount, 256, char); |
322 | for (bits = 1; bits < 256; bits++) { |
323 | if (bits & 1) PL_bitcount[bits]++; |
324 | if (bits & 2) PL_bitcount[bits]++; |
325 | if (bits & 4) PL_bitcount[bits]++; |
326 | if (bits & 8) PL_bitcount[bits]++; |
327 | if (bits & 16) PL_bitcount[bits]++; |
328 | if (bits & 32) PL_bitcount[bits]++; |
329 | if (bits & 64) PL_bitcount[bits]++; |
330 | if (bits & 128) PL_bitcount[bits]++; |
331 | } |
332 | } |
333 | while (len >= 8) { |
334 | culong += PL_bitcount[*(unsigned char*)s++]; |
335 | len -= 8; |
336 | } |
337 | if (len) { |
338 | bits = *s; |
339 | if (datumtype == 'b') { |
340 | while (len-- > 0) { |
341 | if (bits & 1) culong++; |
342 | bits >>= 1; |
343 | } |
344 | } |
345 | else { |
346 | while (len-- > 0) { |
347 | if (bits & 128) culong++; |
348 | bits <<= 1; |
349 | } |
350 | } |
351 | } |
352 | break; |
353 | } |
354 | sv = NEWSV(35, len + 1); |
355 | SvCUR_set(sv, len); |
356 | SvPOK_on(sv); |
357 | str = SvPVX(sv); |
358 | if (datumtype == 'b') { |
359 | aint = len; |
360 | for (len = 0; len < aint; len++) { |
361 | if (len & 7) /*SUPPRESS 595*/ |
362 | bits >>= 1; |
363 | else |
364 | bits = *s++; |
365 | *str++ = '0' + (bits & 1); |
366 | } |
367 | } |
368 | else { |
369 | aint = len; |
370 | for (len = 0; len < aint; len++) { |
371 | if (len & 7) |
372 | bits <<= 1; |
373 | else |
374 | bits = *s++; |
375 | *str++ = '0' + ((bits & 128) != 0); |
376 | } |
377 | } |
378 | *str = '\0'; |
379 | XPUSHs(sv_2mortal(sv)); |
380 | break; |
381 | case 'H': |
382 | case 'h': |
383 | if (star || len > (strend - s) * 2) |
384 | len = (strend - s) * 2; |
385 | sv = NEWSV(35, len + 1); |
386 | SvCUR_set(sv, len); |
387 | SvPOK_on(sv); |
388 | str = SvPVX(sv); |
389 | if (datumtype == 'h') { |
390 | aint = len; |
391 | for (len = 0; len < aint; len++) { |
392 | if (len & 1) |
393 | bits >>= 4; |
394 | else |
395 | bits = *s++; |
396 | *str++ = PL_hexdigit[bits & 15]; |
397 | } |
398 | } |
399 | else { |
400 | aint = len; |
401 | for (len = 0; len < aint; len++) { |
402 | if (len & 1) |
403 | bits <<= 4; |
404 | else |
405 | bits = *s++; |
406 | *str++ = PL_hexdigit[(bits >> 4) & 15]; |
407 | } |
408 | } |
409 | *str = '\0'; |
410 | XPUSHs(sv_2mortal(sv)); |
411 | break; |
412 | case 'c': |
413 | if (len > strend - s) |
414 | len = strend - s; |
415 | if (checksum) { |
416 | while (len-- > 0) { |
417 | aint = *s++; |
418 | if (aint >= 128) /* fake up signed chars */ |
419 | aint -= 256; |
fa8ec7c1 |
420 | if (checksum > bits_in_uv) |
421 | cdouble += (NV)aint; |
422 | else |
423 | culong += aint; |
a6ec74c1 |
424 | } |
425 | } |
426 | else { |
427 | EXTEND(SP, len); |
428 | EXTEND_MORTAL(len); |
429 | while (len-- > 0) { |
430 | aint = *s++; |
431 | if (aint >= 128) /* fake up signed chars */ |
432 | aint -= 256; |
433 | sv = NEWSV(36, 0); |
434 | sv_setiv(sv, (IV)aint); |
435 | PUSHs(sv_2mortal(sv)); |
436 | } |
437 | } |
438 | break; |
439 | case 'C': |
35bcd338 |
440 | unpack_C: /* unpack U will jump here if not UTF-8 */ |
441 | if (len == 0) { |
442 | do_utf8 = FALSE; |
443 | break; |
444 | } |
a6ec74c1 |
445 | if (len > strend - s) |
446 | len = strend - s; |
447 | if (checksum) { |
448 | uchar_checksum: |
449 | while (len-- > 0) { |
450 | auint = *s++ & 255; |
451 | culong += auint; |
452 | } |
453 | } |
454 | else { |
455 | EXTEND(SP, len); |
456 | EXTEND_MORTAL(len); |
457 | while (len-- > 0) { |
458 | auint = *s++ & 255; |
459 | sv = NEWSV(37, 0); |
460 | sv_setiv(sv, (IV)auint); |
461 | PUSHs(sv_2mortal(sv)); |
462 | } |
463 | } |
464 | break; |
465 | case 'U': |
35bcd338 |
466 | if (len == 0) { |
467 | do_utf8 = TRUE; |
468 | break; |
469 | } |
470 | if (!do_utf8) |
471 | goto unpack_C; |
a6ec74c1 |
472 | if (len > strend - s) |
473 | len = strend - s; |
474 | if (checksum) { |
475 | while (len-- > 0 && s < strend) { |
476 | STRLEN alen; |
477 | auint = utf8n_to_uvchr((U8*)s, strend - s, &alen, 0); |
478 | along = alen; |
479 | s += along; |
fa8ec7c1 |
480 | if (checksum > bits_in_uv) |
a6ec74c1 |
481 | cdouble += (NV)auint; |
482 | else |
483 | culong += auint; |
484 | } |
485 | } |
486 | else { |
487 | EXTEND(SP, len); |
488 | EXTEND_MORTAL(len); |
489 | while (len-- > 0 && s < strend) { |
490 | STRLEN alen; |
491 | auint = utf8n_to_uvchr((U8*)s, strend - s, &alen, 0); |
492 | along = alen; |
493 | s += along; |
494 | sv = NEWSV(37, 0); |
495 | sv_setuv(sv, (UV)auint); |
496 | PUSHs(sv_2mortal(sv)); |
497 | } |
498 | } |
499 | break; |
500 | case 's': |
501 | #if SHORTSIZE == SIZE16 |
502 | along = (strend - s) / SIZE16; |
503 | #else |
504 | along = (strend - s) / (natint ? sizeof(short) : SIZE16); |
505 | #endif |
506 | if (len > along) |
507 | len = along; |
508 | if (checksum) { |
509 | #if SHORTSIZE != SIZE16 |
510 | if (natint) { |
511 | short ashort; |
512 | while (len-- > 0) { |
513 | COPYNN(s, &ashort, sizeof(short)); |
514 | s += sizeof(short); |
fa8ec7c1 |
515 | if (checksum > bits_in_uv) |
516 | cdouble += (NV)ashort; |
517 | else |
518 | culong += ashort; |
a6ec74c1 |
519 | |
520 | } |
521 | } |
522 | else |
523 | #endif |
524 | { |
525 | while (len-- > 0) { |
526 | COPY16(s, &ashort); |
527 | #if SHORTSIZE > SIZE16 |
528 | if (ashort > 32767) |
529 | ashort -= 65536; |
530 | #endif |
531 | s += SIZE16; |
fa8ec7c1 |
532 | if (checksum > bits_in_uv) |
533 | cdouble += (NV)ashort; |
534 | else |
535 | culong += ashort; |
a6ec74c1 |
536 | } |
537 | } |
538 | } |
539 | else { |
540 | EXTEND(SP, len); |
541 | EXTEND_MORTAL(len); |
542 | #if SHORTSIZE != SIZE16 |
543 | if (natint) { |
544 | short ashort; |
545 | while (len-- > 0) { |
546 | COPYNN(s, &ashort, sizeof(short)); |
547 | s += sizeof(short); |
548 | sv = NEWSV(38, 0); |
549 | sv_setiv(sv, (IV)ashort); |
550 | PUSHs(sv_2mortal(sv)); |
551 | } |
552 | } |
553 | else |
554 | #endif |
555 | { |
556 | while (len-- > 0) { |
557 | COPY16(s, &ashort); |
558 | #if SHORTSIZE > SIZE16 |
559 | if (ashort > 32767) |
560 | ashort -= 65536; |
561 | #endif |
562 | s += SIZE16; |
563 | sv = NEWSV(38, 0); |
564 | sv_setiv(sv, (IV)ashort); |
565 | PUSHs(sv_2mortal(sv)); |
566 | } |
567 | } |
568 | } |
569 | break; |
570 | case 'v': |
571 | case 'n': |
572 | case 'S': |
573 | #if SHORTSIZE == SIZE16 |
574 | along = (strend - s) / SIZE16; |
575 | #else |
576 | unatint = natint && datumtype == 'S'; |
577 | along = (strend - s) / (unatint ? sizeof(unsigned short) : SIZE16); |
578 | #endif |
579 | if (len > along) |
580 | len = along; |
581 | if (checksum) { |
582 | #if SHORTSIZE != SIZE16 |
583 | if (unatint) { |
584 | unsigned short aushort; |
585 | while (len-- > 0) { |
586 | COPYNN(s, &aushort, sizeof(unsigned short)); |
587 | s += sizeof(unsigned short); |
fa8ec7c1 |
588 | if (checksum > bits_in_uv) |
589 | cdouble += (NV)aushort; |
590 | else |
591 | culong += aushort; |
a6ec74c1 |
592 | } |
593 | } |
594 | else |
595 | #endif |
596 | { |
597 | while (len-- > 0) { |
598 | COPY16(s, &aushort); |
599 | s += SIZE16; |
600 | #ifdef HAS_NTOHS |
601 | if (datumtype == 'n') |
602 | aushort = PerlSock_ntohs(aushort); |
603 | #endif |
604 | #ifdef HAS_VTOHS |
605 | if (datumtype == 'v') |
606 | aushort = vtohs(aushort); |
607 | #endif |
fa8ec7c1 |
608 | if (checksum > bits_in_uv) |
609 | cdouble += (NV)aushort; |
610 | else |
611 | culong += aushort; |
a6ec74c1 |
612 | } |
613 | } |
614 | } |
615 | else { |
616 | EXTEND(SP, len); |
617 | EXTEND_MORTAL(len); |
618 | #if SHORTSIZE != SIZE16 |
619 | if (unatint) { |
620 | unsigned short aushort; |
621 | while (len-- > 0) { |
622 | COPYNN(s, &aushort, sizeof(unsigned short)); |
623 | s += sizeof(unsigned short); |
624 | sv = NEWSV(39, 0); |
625 | sv_setiv(sv, (UV)aushort); |
626 | PUSHs(sv_2mortal(sv)); |
627 | } |
628 | } |
629 | else |
630 | #endif |
631 | { |
632 | while (len-- > 0) { |
633 | COPY16(s, &aushort); |
634 | s += SIZE16; |
635 | sv = NEWSV(39, 0); |
636 | #ifdef HAS_NTOHS |
637 | if (datumtype == 'n') |
638 | aushort = PerlSock_ntohs(aushort); |
639 | #endif |
640 | #ifdef HAS_VTOHS |
641 | if (datumtype == 'v') |
642 | aushort = vtohs(aushort); |
643 | #endif |
644 | sv_setiv(sv, (UV)aushort); |
645 | PUSHs(sv_2mortal(sv)); |
646 | } |
647 | } |
648 | } |
649 | break; |
650 | case 'i': |
651 | along = (strend - s) / sizeof(int); |
652 | if (len > along) |
653 | len = along; |
654 | if (checksum) { |
655 | while (len-- > 0) { |
656 | Copy(s, &aint, 1, int); |
657 | s += sizeof(int); |
fa8ec7c1 |
658 | if (checksum > bits_in_uv) |
a6ec74c1 |
659 | cdouble += (NV)aint; |
660 | else |
661 | culong += aint; |
662 | } |
663 | } |
664 | else { |
665 | EXTEND(SP, len); |
666 | EXTEND_MORTAL(len); |
667 | while (len-- > 0) { |
668 | Copy(s, &aint, 1, int); |
669 | s += sizeof(int); |
670 | sv = NEWSV(40, 0); |
671 | #ifdef __osf__ |
672 | /* Without the dummy below unpack("i", pack("i",-1)) |
673 | * return 0xFFffFFff instead of -1 for Digital Unix V4.0 |
674 | * cc with optimization turned on. |
675 | * |
676 | * The bug was detected in |
677 | * DEC C V5.8-009 on Digital UNIX V4.0 (Rev. 1091) (V4.0E) |
678 | * with optimization (-O4) turned on. |
679 | * DEC C V5.2-040 on Digital UNIX V4.0 (Rev. 564) (V4.0B) |
680 | * does not have this problem even with -O4. |
681 | * |
682 | * This bug was reported as DECC_BUGS 1431 |
683 | * and tracked internally as GEM_BUGS 7775. |
684 | * |
685 | * The bug is fixed in |
686 | * Tru64 UNIX V5.0: Compaq C V6.1-006 or later |
687 | * UNIX V4.0F support: DEC C V5.9-006 or later |
688 | * UNIX V4.0E support: DEC C V5.8-011 or later |
689 | * and also in DTK. |
690 | * |
691 | * See also few lines later for the same bug. |
692 | */ |
693 | (aint) ? |
694 | sv_setiv(sv, (IV)aint) : |
695 | #endif |
696 | sv_setiv(sv, (IV)aint); |
697 | PUSHs(sv_2mortal(sv)); |
698 | } |
699 | } |
700 | break; |
701 | case 'I': |
702 | along = (strend - s) / sizeof(unsigned int); |
703 | if (len > along) |
704 | len = along; |
705 | if (checksum) { |
706 | while (len-- > 0) { |
707 | Copy(s, &auint, 1, unsigned int); |
708 | s += sizeof(unsigned int); |
fa8ec7c1 |
709 | if (checksum > bits_in_uv) |
a6ec74c1 |
710 | cdouble += (NV)auint; |
711 | else |
712 | culong += auint; |
713 | } |
714 | } |
715 | else { |
716 | EXTEND(SP, len); |
717 | EXTEND_MORTAL(len); |
718 | while (len-- > 0) { |
719 | Copy(s, &auint, 1, unsigned int); |
720 | s += sizeof(unsigned int); |
721 | sv = NEWSV(41, 0); |
722 | #ifdef __osf__ |
723 | /* Without the dummy below unpack("I", pack("I",0xFFFFFFFF)) |
724 | * returns 1.84467440737096e+19 instead of 0xFFFFFFFF. |
725 | * See details few lines earlier. */ |
726 | (auint) ? |
727 | sv_setuv(sv, (UV)auint) : |
728 | #endif |
729 | sv_setuv(sv, (UV)auint); |
730 | PUSHs(sv_2mortal(sv)); |
731 | } |
732 | } |
733 | break; |
734 | case 'l': |
735 | #if LONGSIZE == SIZE32 |
736 | along = (strend - s) / SIZE32; |
737 | #else |
738 | along = (strend - s) / (natint ? sizeof(long) : SIZE32); |
739 | #endif |
740 | if (len > along) |
741 | len = along; |
742 | if (checksum) { |
743 | #if LONGSIZE != SIZE32 |
744 | if (natint) { |
745 | while (len-- > 0) { |
746 | COPYNN(s, &along, sizeof(long)); |
747 | s += sizeof(long); |
fa8ec7c1 |
748 | if (checksum > bits_in_uv) |
a6ec74c1 |
749 | cdouble += (NV)along; |
750 | else |
751 | culong += along; |
752 | } |
753 | } |
754 | else |
755 | #endif |
756 | { |
757 | while (len-- > 0) { |
758 | #if LONGSIZE > SIZE32 && INTSIZE == SIZE32 |
759 | I32 along; |
760 | #endif |
761 | COPY32(s, &along); |
762 | #if LONGSIZE > SIZE32 |
763 | if (along > 2147483647) |
764 | along -= 4294967296; |
765 | #endif |
766 | s += SIZE32; |
fa8ec7c1 |
767 | if (checksum > bits_in_uv) |
a6ec74c1 |
768 | cdouble += (NV)along; |
769 | else |
770 | culong += along; |
771 | } |
772 | } |
773 | } |
774 | else { |
775 | EXTEND(SP, len); |
776 | EXTEND_MORTAL(len); |
777 | #if LONGSIZE != SIZE32 |
778 | if (natint) { |
779 | while (len-- > 0) { |
780 | COPYNN(s, &along, sizeof(long)); |
781 | s += sizeof(long); |
782 | sv = NEWSV(42, 0); |
783 | sv_setiv(sv, (IV)along); |
784 | PUSHs(sv_2mortal(sv)); |
785 | } |
786 | } |
787 | else |
788 | #endif |
789 | { |
790 | while (len-- > 0) { |
791 | #if LONGSIZE > SIZE32 && INTSIZE == SIZE32 |
792 | I32 along; |
793 | #endif |
794 | COPY32(s, &along); |
795 | #if LONGSIZE > SIZE32 |
796 | if (along > 2147483647) |
797 | along -= 4294967296; |
798 | #endif |
799 | s += SIZE32; |
800 | sv = NEWSV(42, 0); |
801 | sv_setiv(sv, (IV)along); |
802 | PUSHs(sv_2mortal(sv)); |
803 | } |
804 | } |
805 | } |
806 | break; |
807 | case 'V': |
808 | case 'N': |
809 | case 'L': |
810 | #if LONGSIZE == SIZE32 |
811 | along = (strend - s) / SIZE32; |
812 | #else |
813 | unatint = natint && datumtype == 'L'; |
814 | along = (strend - s) / (unatint ? sizeof(unsigned long) : SIZE32); |
815 | #endif |
816 | if (len > along) |
817 | len = along; |
818 | if (checksum) { |
819 | #if LONGSIZE != SIZE32 |
820 | if (unatint) { |
821 | unsigned long aulong; |
822 | while (len-- > 0) { |
823 | COPYNN(s, &aulong, sizeof(unsigned long)); |
824 | s += sizeof(unsigned long); |
fa8ec7c1 |
825 | if (checksum > bits_in_uv) |
a6ec74c1 |
826 | cdouble += (NV)aulong; |
827 | else |
828 | culong += aulong; |
829 | } |
830 | } |
831 | else |
832 | #endif |
833 | { |
834 | while (len-- > 0) { |
835 | COPY32(s, &aulong); |
836 | s += SIZE32; |
837 | #ifdef HAS_NTOHL |
838 | if (datumtype == 'N') |
839 | aulong = PerlSock_ntohl(aulong); |
840 | #endif |
841 | #ifdef HAS_VTOHL |
842 | if (datumtype == 'V') |
843 | aulong = vtohl(aulong); |
844 | #endif |
fa8ec7c1 |
845 | if (checksum > bits_in_uv) |
a6ec74c1 |
846 | cdouble += (NV)aulong; |
847 | else |
848 | culong += aulong; |
849 | } |
850 | } |
851 | } |
852 | else { |
853 | EXTEND(SP, len); |
854 | EXTEND_MORTAL(len); |
855 | #if LONGSIZE != SIZE32 |
856 | if (unatint) { |
857 | unsigned long aulong; |
858 | while (len-- > 0) { |
859 | COPYNN(s, &aulong, sizeof(unsigned long)); |
860 | s += sizeof(unsigned long); |
861 | sv = NEWSV(43, 0); |
862 | sv_setuv(sv, (UV)aulong); |
863 | PUSHs(sv_2mortal(sv)); |
864 | } |
865 | } |
866 | else |
867 | #endif |
868 | { |
869 | while (len-- > 0) { |
870 | COPY32(s, &aulong); |
871 | s += SIZE32; |
872 | #ifdef HAS_NTOHL |
873 | if (datumtype == 'N') |
874 | aulong = PerlSock_ntohl(aulong); |
875 | #endif |
876 | #ifdef HAS_VTOHL |
877 | if (datumtype == 'V') |
878 | aulong = vtohl(aulong); |
879 | #endif |
880 | sv = NEWSV(43, 0); |
881 | sv_setuv(sv, (UV)aulong); |
882 | PUSHs(sv_2mortal(sv)); |
883 | } |
884 | } |
885 | } |
886 | break; |
887 | case 'p': |
888 | along = (strend - s) / sizeof(char*); |
889 | if (len > along) |
890 | len = along; |
891 | EXTEND(SP, len); |
892 | EXTEND_MORTAL(len); |
893 | while (len-- > 0) { |
894 | if (sizeof(char*) > strend - s) |
895 | break; |
896 | else { |
897 | Copy(s, &aptr, 1, char*); |
898 | s += sizeof(char*); |
899 | } |
900 | sv = NEWSV(44, 0); |
901 | if (aptr) |
902 | sv_setpv(sv, aptr); |
903 | PUSHs(sv_2mortal(sv)); |
904 | } |
905 | break; |
906 | case 'w': |
907 | EXTEND(SP, len); |
908 | EXTEND_MORTAL(len); |
909 | { |
910 | UV auv = 0; |
911 | U32 bytes = 0; |
912 | |
913 | while ((len > 0) && (s < strend)) { |
914 | auv = (auv << 7) | (*s & 0x7f); |
915 | /* UTF8_IS_XXXXX not right here - using constant 0x80 */ |
916 | if ((U8)(*s++) < 0x80) { |
917 | bytes = 0; |
918 | sv = NEWSV(40, 0); |
919 | sv_setuv(sv, auv); |
920 | PUSHs(sv_2mortal(sv)); |
921 | len--; |
922 | auv = 0; |
923 | } |
924 | else if (++bytes >= sizeof(UV)) { /* promote to string */ |
925 | char *t; |
926 | STRLEN n_a; |
927 | |
928 | sv = Perl_newSVpvf(aTHX_ "%.*"UVf, (int)TYPE_DIGITS(UV), auv); |
929 | while (s < strend) { |
930 | sv = mul128(sv, *s & 0x7f); |
931 | if (!(*s++ & 0x80)) { |
932 | bytes = 0; |
933 | break; |
934 | } |
935 | } |
936 | t = SvPV(sv, n_a); |
937 | while (*t == '0') |
938 | t++; |
939 | sv_chop(sv, t); |
940 | PUSHs(sv_2mortal(sv)); |
941 | len--; |
942 | auv = 0; |
943 | } |
944 | } |
945 | if ((s >= strend) && bytes) |
946 | DIE(aTHX_ "Unterminated compressed integer"); |
947 | } |
948 | break; |
949 | case 'P': |
950 | EXTEND(SP, 1); |
951 | if (sizeof(char*) > strend - s) |
952 | break; |
953 | else { |
954 | Copy(s, &aptr, 1, char*); |
955 | s += sizeof(char*); |
956 | } |
957 | sv = NEWSV(44, 0); |
958 | if (aptr) |
959 | sv_setpvn(sv, aptr, len); |
960 | PUSHs(sv_2mortal(sv)); |
961 | break; |
962 | #ifdef HAS_QUAD |
963 | case 'q': |
964 | along = (strend - s) / sizeof(Quad_t); |
965 | if (len > along) |
966 | len = along; |
fa8ec7c1 |
967 | if (checksum) { |
968 | while (len-- > 0) { |
a6ec74c1 |
969 | Copy(s, &aquad, 1, Quad_t); |
970 | s += sizeof(Quad_t); |
fa8ec7c1 |
971 | if (checksum > bits_in_uv) |
972 | cdouble += (NV)aquad; |
973 | else |
974 | culong += aquad; |
a6ec74c1 |
975 | } |
a6ec74c1 |
976 | } |
fa8ec7c1 |
977 | else { |
978 | EXTEND(SP, len); |
979 | EXTEND_MORTAL(len); |
980 | while (len-- > 0) { |
981 | if (s + sizeof(Quad_t) > strend) |
982 | aquad = 0; |
983 | else { |
984 | Copy(s, &aquad, 1, Quad_t); |
985 | s += sizeof(Quad_t); |
986 | } |
987 | sv = NEWSV(42, 0); |
988 | if (aquad >= IV_MIN && aquad <= IV_MAX) |
989 | sv_setiv(sv, (IV)aquad); |
990 | else |
991 | sv_setnv(sv, (NV)aquad); |
992 | PUSHs(sv_2mortal(sv)); |
993 | } |
994 | } |
a6ec74c1 |
995 | break; |
996 | case 'Q': |
997 | along = (strend - s) / sizeof(Quad_t); |
998 | if (len > along) |
999 | len = along; |
fa8ec7c1 |
1000 | if (checksum) { |
1001 | while (len-- > 0) { |
a6ec74c1 |
1002 | Copy(s, &auquad, 1, Uquad_t); |
1003 | s += sizeof(Uquad_t); |
fa8ec7c1 |
1004 | if (checksum > bits_in_uv) |
1005 | cdouble += (NV)auquad; |
1006 | else |
1007 | culong += auquad; |
a6ec74c1 |
1008 | } |
a6ec74c1 |
1009 | } |
fa8ec7c1 |
1010 | else { |
1011 | EXTEND(SP, len); |
1012 | EXTEND_MORTAL(len); |
1013 | while (len-- > 0) { |
1014 | if (s + sizeof(Uquad_t) > strend) |
1015 | auquad = 0; |
1016 | else { |
1017 | Copy(s, &auquad, 1, Uquad_t); |
1018 | s += sizeof(Uquad_t); |
1019 | } |
1020 | sv = NEWSV(43, 0); |
1021 | if (auquad <= UV_MAX) |
1022 | sv_setuv(sv, (UV)auquad); |
1023 | else |
1024 | sv_setnv(sv, (NV)auquad); |
1025 | PUSHs(sv_2mortal(sv)); |
1026 | } |
1027 | } |
a6ec74c1 |
1028 | break; |
1029 | #endif |
1030 | /* float and double added gnb@melba.bby.oz.au 22/11/89 */ |
1031 | case 'f': |
1032 | case 'F': |
1033 | along = (strend - s) / sizeof(float); |
1034 | if (len > along) |
1035 | len = along; |
1036 | if (checksum) { |
1037 | while (len-- > 0) { |
1038 | Copy(s, &afloat, 1, float); |
1039 | s += sizeof(float); |
1040 | cdouble += afloat; |
1041 | } |
1042 | } |
1043 | else { |
1044 | EXTEND(SP, len); |
1045 | EXTEND_MORTAL(len); |
1046 | while (len-- > 0) { |
1047 | Copy(s, &afloat, 1, float); |
1048 | s += sizeof(float); |
1049 | sv = NEWSV(47, 0); |
1050 | sv_setnv(sv, (NV)afloat); |
1051 | PUSHs(sv_2mortal(sv)); |
1052 | } |
1053 | } |
1054 | break; |
1055 | case 'd': |
1056 | case 'D': |
1057 | along = (strend - s) / sizeof(double); |
1058 | if (len > along) |
1059 | len = along; |
1060 | if (checksum) { |
1061 | while (len-- > 0) { |
1062 | Copy(s, &adouble, 1, double); |
1063 | s += sizeof(double); |
1064 | cdouble += adouble; |
1065 | } |
1066 | } |
1067 | else { |
1068 | EXTEND(SP, len); |
1069 | EXTEND_MORTAL(len); |
1070 | while (len-- > 0) { |
1071 | Copy(s, &adouble, 1, double); |
1072 | s += sizeof(double); |
1073 | sv = NEWSV(48, 0); |
1074 | sv_setnv(sv, (NV)adouble); |
1075 | PUSHs(sv_2mortal(sv)); |
1076 | } |
1077 | } |
1078 | break; |
1079 | case 'u': |
1080 | /* MKS: |
1081 | * Initialise the decode mapping. By using a table driven |
1082 | * algorithm, the code will be character-set independent |
1083 | * (and just as fast as doing character arithmetic) |
1084 | */ |
1085 | if (PL_uudmap['M'] == 0) { |
1086 | int i; |
1087 | |
1088 | for (i = 0; i < sizeof(PL_uuemap); i += 1) |
1089 | PL_uudmap[(U8)PL_uuemap[i]] = i; |
1090 | /* |
1091 | * Because ' ' and '`' map to the same value, |
1092 | * we need to decode them both the same. |
1093 | */ |
1094 | PL_uudmap[' '] = 0; |
1095 | } |
1096 | |
1097 | along = (strend - s) * 3 / 4; |
1098 | sv = NEWSV(42, along); |
1099 | if (along) |
1100 | SvPOK_on(sv); |
1101 | while (s < strend && *s > ' ' && ISUUCHAR(*s)) { |
1102 | I32 a, b, c, d; |
1103 | char hunk[4]; |
1104 | |
1105 | hunk[3] = '\0'; |
1106 | len = PL_uudmap[*(U8*)s++] & 077; |
1107 | while (len > 0) { |
1108 | if (s < strend && ISUUCHAR(*s)) |
1109 | a = PL_uudmap[*(U8*)s++] & 077; |
1110 | else |
1111 | a = 0; |
1112 | if (s < strend && ISUUCHAR(*s)) |
1113 | b = PL_uudmap[*(U8*)s++] & 077; |
1114 | else |
1115 | b = 0; |
1116 | if (s < strend && ISUUCHAR(*s)) |
1117 | c = PL_uudmap[*(U8*)s++] & 077; |
1118 | else |
1119 | c = 0; |
1120 | if (s < strend && ISUUCHAR(*s)) |
1121 | d = PL_uudmap[*(U8*)s++] & 077; |
1122 | else |
1123 | d = 0; |
1124 | hunk[0] = (a << 2) | (b >> 4); |
1125 | hunk[1] = (b << 4) | (c >> 2); |
1126 | hunk[2] = (c << 6) | d; |
1127 | sv_catpvn(sv, hunk, (len > 3) ? 3 : len); |
1128 | len -= 3; |
1129 | } |
1130 | if (*s == '\n') |
1131 | s++; |
1132 | else if (s[1] == '\n') /* possible checksum byte */ |
1133 | s += 2; |
1134 | } |
1135 | XPUSHs(sv_2mortal(sv)); |
1136 | break; |
1137 | } |
1138 | if (checksum) { |
1139 | sv = NEWSV(42, 0); |
1140 | if (strchr("fFdD", datumtype) || |
fa8ec7c1 |
1141 | (checksum > bits_in_uv && strchr("csSiIlLnNUvVqQ", datumtype)) ) { |
a6ec74c1 |
1142 | NV trouble; |
1143 | |
fa8ec7c1 |
1144 | adouble = (NV) (1 << (checksum & 15)); |
a6ec74c1 |
1145 | while (checksum >= 16) { |
1146 | checksum -= 16; |
1147 | adouble *= 65536.0; |
1148 | } |
a6ec74c1 |
1149 | while (cdouble < 0.0) |
1150 | cdouble += adouble; |
1151 | cdouble = Perl_modf(cdouble / adouble, &trouble) * adouble; |
1152 | sv_setnv(sv, cdouble); |
1153 | } |
1154 | else { |
fa8ec7c1 |
1155 | if (checksum < bits_in_uv) { |
1156 | UV mask = ((UV)1 << checksum) - 1; |
1157 | culong &= mask; |
a6ec74c1 |
1158 | } |
1159 | sv_setuv(sv, (UV)culong); |
1160 | } |
1161 | XPUSHs(sv_2mortal(sv)); |
1162 | checksum = 0; |
1163 | } |
1164 | } |
1165 | if (SP - PL_stack_base == start_sp_offset && gimme == G_SCALAR) |
1166 | PUSHs(&PL_sv_undef); |
1167 | RETURN; |
1168 | } |
1169 | |
1170 | STATIC void |
1171 | S_doencodes(pTHX_ register SV *sv, register char *s, register I32 len) |
1172 | { |
1173 | char hunk[5]; |
1174 | |
1175 | *hunk = PL_uuemap[len]; |
1176 | sv_catpvn(sv, hunk, 1); |
1177 | hunk[4] = '\0'; |
1178 | while (len > 2) { |
1179 | hunk[0] = PL_uuemap[(077 & (*s >> 2))]; |
1180 | hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((s[1] >> 4) & 017)))]; |
1181 | hunk[2] = PL_uuemap[(077 & (((s[1] << 2) & 074) | ((s[2] >> 6) & 03)))]; |
1182 | hunk[3] = PL_uuemap[(077 & (s[2] & 077))]; |
1183 | sv_catpvn(sv, hunk, 4); |
1184 | s += 3; |
1185 | len -= 3; |
1186 | } |
1187 | if (len > 0) { |
1188 | char r = (len > 1 ? s[1] : '\0'); |
1189 | hunk[0] = PL_uuemap[(077 & (*s >> 2))]; |
1190 | hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((r >> 4) & 017)))]; |
1191 | hunk[2] = PL_uuemap[(077 & ((r << 2) & 074))]; |
1192 | hunk[3] = PL_uuemap[0]; |
1193 | sv_catpvn(sv, hunk, 4); |
1194 | } |
1195 | sv_catpvn(sv, "\n", 1); |
1196 | } |
1197 | |
1198 | STATIC SV * |
1199 | S_is_an_int(pTHX_ char *s, STRLEN l) |
1200 | { |
1201 | STRLEN n_a; |
1202 | SV *result = newSVpvn(s, l); |
1203 | char *result_c = SvPV(result, n_a); /* convenience */ |
1204 | char *out = result_c; |
1205 | bool skip = 1; |
1206 | bool ignore = 0; |
1207 | |
1208 | while (*s) { |
1209 | switch (*s) { |
1210 | case ' ': |
1211 | break; |
1212 | case '+': |
1213 | if (!skip) { |
1214 | SvREFCNT_dec(result); |
1215 | return (NULL); |
1216 | } |
1217 | break; |
1218 | case '0': |
1219 | case '1': |
1220 | case '2': |
1221 | case '3': |
1222 | case '4': |
1223 | case '5': |
1224 | case '6': |
1225 | case '7': |
1226 | case '8': |
1227 | case '9': |
1228 | skip = 0; |
1229 | if (!ignore) { |
1230 | *(out++) = *s; |
1231 | } |
1232 | break; |
1233 | case '.': |
1234 | ignore = 1; |
1235 | break; |
1236 | default: |
1237 | SvREFCNT_dec(result); |
1238 | return (NULL); |
1239 | } |
1240 | s++; |
1241 | } |
1242 | *(out++) = '\0'; |
1243 | SvCUR_set(result, out - result_c); |
1244 | return (result); |
1245 | } |
1246 | |
1247 | /* pnum must be '\0' terminated */ |
1248 | STATIC int |
1249 | S_div128(pTHX_ SV *pnum, bool *done) |
1250 | { |
1251 | STRLEN len; |
1252 | char *s = SvPV(pnum, len); |
1253 | int m = 0; |
1254 | int r = 0; |
1255 | char *t = s; |
1256 | |
1257 | *done = 1; |
1258 | while (*t) { |
1259 | int i; |
1260 | |
1261 | i = m * 10 + (*t - '0'); |
1262 | m = i & 0x7F; |
1263 | r = (i >> 7); /* r < 10 */ |
1264 | if (r) { |
1265 | *done = 0; |
1266 | } |
1267 | *(t++) = '0' + r; |
1268 | } |
1269 | *(t++) = '\0'; |
1270 | SvCUR_set(pnum, (STRLEN) (t - s)); |
1271 | return (m); |
1272 | } |
1273 | |
1274 | |
1275 | PP(pp_pack) |
1276 | { |
1277 | dSP; dMARK; dORIGMARK; dTARGET; |
1278 | register SV *cat = TARG; |
1279 | register I32 items; |
1280 | STRLEN fromlen; |
1281 | register char *pat = SvPVx(*++MARK, fromlen); |
1282 | char *patcopy; |
1283 | register char *patend = pat + fromlen; |
1284 | register I32 len; |
1285 | I32 datumtype; |
1286 | SV *fromstr; |
1287 | /*SUPPRESS 442*/ |
1288 | static char null10[] = {0,0,0,0,0,0,0,0,0,0}; |
1289 | static char *space10 = " "; |
1290 | |
1291 | /* These must not be in registers: */ |
1292 | char achar; |
1293 | I16 ashort; |
1294 | int aint; |
1295 | unsigned int auint; |
1296 | I32 along; |
1297 | U32 aulong; |
1298 | #ifdef HAS_QUAD |
1299 | Quad_t aquad; |
1300 | Uquad_t auquad; |
1301 | #endif |
1302 | char *aptr; |
1303 | float afloat; |
1304 | double adouble; |
1305 | int commas = 0; |
1306 | #ifdef PERL_NATINT_PACK |
1307 | int natint; /* native integer */ |
1308 | #endif |
1309 | |
1310 | items = SP - MARK; |
1311 | MARK++; |
1312 | sv_setpvn(cat, "", 0); |
1313 | patcopy = pat; |
1314 | while (pat < patend) { |
1315 | SV *lengthcode = Nullsv; |
1316 | #define NEXTFROM ( lengthcode ? lengthcode : items-- > 0 ? *MARK++ : &PL_sv_no) |
1317 | datumtype = *pat++ & 0xFF; |
1318 | #ifdef PERL_NATINT_PACK |
1319 | natint = 0; |
1320 | #endif |
1321 | if (isSPACE(datumtype)) { |
1322 | patcopy++; |
1323 | continue; |
1324 | } |
1325 | #ifndef PACKED_IS_OCTETS |
1326 | if (datumtype == 'U' && pat == patcopy+1) |
1327 | SvUTF8_on(cat); |
1328 | #endif |
1329 | if (datumtype == '#') { |
1330 | while (pat < patend && *pat != '\n') |
1331 | pat++; |
1332 | continue; |
1333 | } |
1334 | if (*pat == '!') { |
1335 | char *natstr = "sSiIlL"; |
1336 | |
1337 | if (strchr(natstr, datumtype)) { |
1338 | #ifdef PERL_NATINT_PACK |
1339 | natint = 1; |
1340 | #endif |
1341 | pat++; |
1342 | } |
1343 | else |
1344 | DIE(aTHX_ "'!' allowed only after types %s", natstr); |
1345 | } |
1346 | if (*pat == '*') { |
1347 | len = strchr("@Xxu", datumtype) ? 0 : items; |
1348 | pat++; |
1349 | } |
1350 | else if (isDIGIT(*pat)) { |
1351 | len = *pat++ - '0'; |
1352 | while (isDIGIT(*pat)) { |
1353 | len = (len * 10) + (*pat++ - '0'); |
1354 | if (len < 0) |
1355 | DIE(aTHX_ "Repeat count in pack overflows"); |
1356 | } |
1357 | } |
1358 | else |
1359 | len = 1; |
1360 | if (*pat == '/') { |
1361 | ++pat; |
1362 | if ((*pat != 'a' && *pat != 'A' && *pat != 'Z') || pat[1] != '*') |
1363 | DIE(aTHX_ "/ must be followed by a*, A* or Z*"); |
1364 | lengthcode = sv_2mortal(newSViv(sv_len(items > 0 |
1365 | ? *MARK : &PL_sv_no) |
1366 | + (*pat == 'Z' ? 1 : 0))); |
1367 | } |
1368 | switch(datumtype) { |
1369 | default: |
1370 | DIE(aTHX_ "Invalid type in pack: '%c'", (int)datumtype); |
1371 | case ',': /* grandfather in commas but with a warning */ |
1372 | if (commas++ == 0 && ckWARN(WARN_PACK)) |
1373 | Perl_warner(aTHX_ WARN_PACK, |
1374 | "Invalid type in pack: '%c'", (int)datumtype); |
1375 | break; |
1376 | case '%': |
1377 | DIE(aTHX_ "%% may only be used in unpack"); |
1378 | case '@': |
1379 | len -= SvCUR(cat); |
1380 | if (len > 0) |
1381 | goto grow; |
1382 | len = -len; |
1383 | if (len > 0) |
1384 | goto shrink; |
1385 | break; |
1386 | case 'X': |
1387 | shrink: |
1388 | if (SvCUR(cat) < len) |
1389 | DIE(aTHX_ "X outside of string"); |
1390 | SvCUR(cat) -= len; |
1391 | *SvEND(cat) = '\0'; |
1392 | break; |
1393 | case 'x': |
1394 | grow: |
1395 | while (len >= 10) { |
1396 | sv_catpvn(cat, null10, 10); |
1397 | len -= 10; |
1398 | } |
1399 | sv_catpvn(cat, null10, len); |
1400 | break; |
1401 | case 'A': |
1402 | case 'Z': |
1403 | case 'a': |
1404 | fromstr = NEXTFROM; |
1405 | aptr = SvPV(fromstr, fromlen); |
1406 | if (pat[-1] == '*') { |
1407 | len = fromlen; |
1408 | if (datumtype == 'Z') |
1409 | ++len; |
1410 | } |
1411 | if (fromlen >= len) { |
1412 | sv_catpvn(cat, aptr, len); |
1413 | if (datumtype == 'Z') |
1414 | *(SvEND(cat)-1) = '\0'; |
1415 | } |
1416 | else { |
1417 | sv_catpvn(cat, aptr, fromlen); |
1418 | len -= fromlen; |
1419 | if (datumtype == 'A') { |
1420 | while (len >= 10) { |
1421 | sv_catpvn(cat, space10, 10); |
1422 | len -= 10; |
1423 | } |
1424 | sv_catpvn(cat, space10, len); |
1425 | } |
1426 | else { |
1427 | while (len >= 10) { |
1428 | sv_catpvn(cat, null10, 10); |
1429 | len -= 10; |
1430 | } |
1431 | sv_catpvn(cat, null10, len); |
1432 | } |
1433 | } |
1434 | break; |
1435 | case 'B': |
1436 | case 'b': |
1437 | { |
1438 | register char *str; |
1439 | I32 saveitems; |
1440 | |
1441 | fromstr = NEXTFROM; |
1442 | saveitems = items; |
1443 | str = SvPV(fromstr, fromlen); |
1444 | if (pat[-1] == '*') |
1445 | len = fromlen; |
1446 | aint = SvCUR(cat); |
1447 | SvCUR(cat) += (len+7)/8; |
1448 | SvGROW(cat, SvCUR(cat) + 1); |
1449 | aptr = SvPVX(cat) + aint; |
1450 | if (len > fromlen) |
1451 | len = fromlen; |
1452 | aint = len; |
1453 | items = 0; |
1454 | if (datumtype == 'B') { |
1455 | for (len = 0; len++ < aint;) { |
1456 | items |= *str++ & 1; |
1457 | if (len & 7) |
1458 | items <<= 1; |
1459 | else { |
1460 | *aptr++ = items & 0xff; |
1461 | items = 0; |
1462 | } |
1463 | } |
1464 | } |
1465 | else { |
1466 | for (len = 0; len++ < aint;) { |
1467 | if (*str++ & 1) |
1468 | items |= 128; |
1469 | if (len & 7) |
1470 | items >>= 1; |
1471 | else { |
1472 | *aptr++ = items & 0xff; |
1473 | items = 0; |
1474 | } |
1475 | } |
1476 | } |
1477 | if (aint & 7) { |
1478 | if (datumtype == 'B') |
1479 | items <<= 7 - (aint & 7); |
1480 | else |
1481 | items >>= 7 - (aint & 7); |
1482 | *aptr++ = items & 0xff; |
1483 | } |
1484 | str = SvPVX(cat) + SvCUR(cat); |
1485 | while (aptr <= str) |
1486 | *aptr++ = '\0'; |
1487 | |
1488 | items = saveitems; |
1489 | } |
1490 | break; |
1491 | case 'H': |
1492 | case 'h': |
1493 | { |
1494 | register char *str; |
1495 | I32 saveitems; |
1496 | |
1497 | fromstr = NEXTFROM; |
1498 | saveitems = items; |
1499 | str = SvPV(fromstr, fromlen); |
1500 | if (pat[-1] == '*') |
1501 | len = fromlen; |
1502 | aint = SvCUR(cat); |
1503 | SvCUR(cat) += (len+1)/2; |
1504 | SvGROW(cat, SvCUR(cat) + 1); |
1505 | aptr = SvPVX(cat) + aint; |
1506 | if (len > fromlen) |
1507 | len = fromlen; |
1508 | aint = len; |
1509 | items = 0; |
1510 | if (datumtype == 'H') { |
1511 | for (len = 0; len++ < aint;) { |
1512 | if (isALPHA(*str)) |
1513 | items |= ((*str++ & 15) + 9) & 15; |
1514 | else |
1515 | items |= *str++ & 15; |
1516 | if (len & 1) |
1517 | items <<= 4; |
1518 | else { |
1519 | *aptr++ = items & 0xff; |
1520 | items = 0; |
1521 | } |
1522 | } |
1523 | } |
1524 | else { |
1525 | for (len = 0; len++ < aint;) { |
1526 | if (isALPHA(*str)) |
1527 | items |= (((*str++ & 15) + 9) & 15) << 4; |
1528 | else |
1529 | items |= (*str++ & 15) << 4; |
1530 | if (len & 1) |
1531 | items >>= 4; |
1532 | else { |
1533 | *aptr++ = items & 0xff; |
1534 | items = 0; |
1535 | } |
1536 | } |
1537 | } |
1538 | if (aint & 1) |
1539 | *aptr++ = items & 0xff; |
1540 | str = SvPVX(cat) + SvCUR(cat); |
1541 | while (aptr <= str) |
1542 | *aptr++ = '\0'; |
1543 | |
1544 | items = saveitems; |
1545 | } |
1546 | break; |
1547 | case 'C': |
1548 | case 'c': |
1549 | while (len-- > 0) { |
1550 | fromstr = NEXTFROM; |
1551 | switch (datumtype) { |
1552 | case 'C': |
1553 | aint = SvIV(fromstr); |
1554 | if ((aint < 0 || aint > 255) && |
1555 | ckWARN(WARN_PACK)) |
1556 | Perl_warner(aTHX_ WARN_PACK, |
1557 | "Character in \"C\" format wrapped"); |
1558 | achar = aint & 255; |
1559 | sv_catpvn(cat, &achar, sizeof(char)); |
1560 | break; |
1561 | case 'c': |
1562 | aint = SvIV(fromstr); |
1563 | if ((aint < -128 || aint > 127) && |
1564 | ckWARN(WARN_PACK)) |
1565 | Perl_warner(aTHX_ WARN_PACK, |
1566 | "Character in \"c\" format wrapped"); |
1567 | achar = aint & 255; |
1568 | sv_catpvn(cat, &achar, sizeof(char)); |
1569 | break; |
1570 | } |
1571 | } |
1572 | break; |
1573 | case 'U': |
1574 | while (len-- > 0) { |
1575 | fromstr = NEXTFROM; |
1576 | auint = SvUV(fromstr); |
1577 | SvGROW(cat, SvCUR(cat) + UTF8_MAXLEN + 1); |
1578 | SvCUR_set(cat, (char*)uvchr_to_utf8((U8*)SvEND(cat),auint) |
1579 | - SvPVX(cat)); |
1580 | } |
1581 | *SvEND(cat) = '\0'; |
1582 | break; |
1583 | /* Float and double added by gnb@melba.bby.oz.au 22/11/89 */ |
1584 | case 'f': |
1585 | case 'F': |
1586 | while (len-- > 0) { |
1587 | fromstr = NEXTFROM; |
1588 | afloat = (float)SvNV(fromstr); |
1589 | sv_catpvn(cat, (char *)&afloat, sizeof (float)); |
1590 | } |
1591 | break; |
1592 | case 'd': |
1593 | case 'D': |
1594 | while (len-- > 0) { |
1595 | fromstr = NEXTFROM; |
1596 | adouble = (double)SvNV(fromstr); |
1597 | sv_catpvn(cat, (char *)&adouble, sizeof (double)); |
1598 | } |
1599 | break; |
1600 | case 'n': |
1601 | while (len-- > 0) { |
1602 | fromstr = NEXTFROM; |
1603 | ashort = (I16)SvIV(fromstr); |
1604 | #ifdef HAS_HTONS |
1605 | ashort = PerlSock_htons(ashort); |
1606 | #endif |
1607 | CAT16(cat, &ashort); |
1608 | } |
1609 | break; |
1610 | case 'v': |
1611 | while (len-- > 0) { |
1612 | fromstr = NEXTFROM; |
1613 | ashort = (I16)SvIV(fromstr); |
1614 | #ifdef HAS_HTOVS |
1615 | ashort = htovs(ashort); |
1616 | #endif |
1617 | CAT16(cat, &ashort); |
1618 | } |
1619 | break; |
1620 | case 'S': |
1621 | #if SHORTSIZE != SIZE16 |
1622 | if (natint) { |
1623 | unsigned short aushort; |
1624 | |
1625 | while (len-- > 0) { |
1626 | fromstr = NEXTFROM; |
1627 | aushort = SvUV(fromstr); |
1628 | sv_catpvn(cat, (char *)&aushort, sizeof(unsigned short)); |
1629 | } |
1630 | } |
1631 | else |
1632 | #endif |
1633 | { |
1634 | U16 aushort; |
1635 | |
1636 | while (len-- > 0) { |
1637 | fromstr = NEXTFROM; |
1638 | aushort = (U16)SvUV(fromstr); |
1639 | CAT16(cat, &aushort); |
1640 | } |
1641 | |
1642 | } |
1643 | break; |
1644 | case 's': |
1645 | #if SHORTSIZE != SIZE16 |
1646 | if (natint) { |
1647 | short ashort; |
1648 | |
1649 | while (len-- > 0) { |
1650 | fromstr = NEXTFROM; |
1651 | ashort = SvIV(fromstr); |
1652 | sv_catpvn(cat, (char *)&ashort, sizeof(short)); |
1653 | } |
1654 | } |
1655 | else |
1656 | #endif |
1657 | { |
1658 | while (len-- > 0) { |
1659 | fromstr = NEXTFROM; |
1660 | ashort = (I16)SvIV(fromstr); |
1661 | CAT16(cat, &ashort); |
1662 | } |
1663 | } |
1664 | break; |
1665 | case 'I': |
1666 | while (len-- > 0) { |
1667 | fromstr = NEXTFROM; |
1668 | auint = SvUV(fromstr); |
1669 | sv_catpvn(cat, (char*)&auint, sizeof(unsigned int)); |
1670 | } |
1671 | break; |
1672 | case 'w': |
1673 | while (len-- > 0) { |
1674 | fromstr = NEXTFROM; |
1675 | adouble = Perl_floor(SvNV(fromstr)); |
1676 | |
1677 | if (adouble < 0) |
1678 | DIE(aTHX_ "Cannot compress negative numbers"); |
1679 | |
1680 | if ( |
1681 | #if UVSIZE > 4 && UVSIZE >= NVSIZE |
1682 | adouble <= 0xffffffff |
1683 | #else |
1684 | # ifdef CXUX_BROKEN_CONSTANT_CONVERT |
1685 | adouble <= UV_MAX_cxux |
1686 | # else |
1687 | adouble <= UV_MAX |
1688 | # endif |
1689 | #endif |
1690 | ) |
1691 | { |
1692 | char buf[1 + sizeof(UV)]; |
1693 | char *in = buf + sizeof(buf); |
1694 | UV auv = U_V(adouble); |
1695 | |
1696 | do { |
1697 | *--in = (auv & 0x7f) | 0x80; |
1698 | auv >>= 7; |
1699 | } while (auv); |
1700 | buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */ |
1701 | sv_catpvn(cat, in, (buf + sizeof(buf)) - in); |
1702 | } |
1703 | else if (SvPOKp(fromstr)) { /* decimal string arithmetics */ |
1704 | char *from, *result, *in; |
1705 | SV *norm; |
1706 | STRLEN len; |
1707 | bool done; |
1708 | |
1709 | /* Copy string and check for compliance */ |
1710 | from = SvPV(fromstr, len); |
1711 | if ((norm = is_an_int(from, len)) == NULL) |
1712 | DIE(aTHX_ "can compress only unsigned integer"); |
1713 | |
1714 | New('w', result, len, char); |
1715 | in = result + len; |
1716 | done = FALSE; |
1717 | while (!done) |
1718 | *--in = div128(norm, &done) | 0x80; |
1719 | result[len - 1] &= 0x7F; /* clear continue bit */ |
1720 | sv_catpvn(cat, in, (result + len) - in); |
1721 | Safefree(result); |
1722 | SvREFCNT_dec(norm); /* free norm */ |
1723 | } |
1724 | else if (SvNOKp(fromstr)) { |
1725 | char buf[sizeof(double) * 2]; /* 8/7 <= 2 */ |
1726 | char *in = buf + sizeof(buf); |
1727 | |
1728 | do { |
1729 | double next = floor(adouble / 128); |
1730 | *--in = (unsigned char)(adouble - (next * 128)) | 0x80; |
1731 | if (in <= buf) /* this cannot happen ;-) */ |
1732 | DIE(aTHX_ "Cannot compress integer"); |
a6ec74c1 |
1733 | adouble = next; |
1734 | } while (adouble > 0); |
1735 | buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */ |
1736 | sv_catpvn(cat, in, (buf + sizeof(buf)) - in); |
1737 | } |
1738 | else |
1739 | DIE(aTHX_ "Cannot compress non integer"); |
1740 | } |
1741 | break; |
1742 | case 'i': |
1743 | while (len-- > 0) { |
1744 | fromstr = NEXTFROM; |
1745 | aint = SvIV(fromstr); |
1746 | sv_catpvn(cat, (char*)&aint, sizeof(int)); |
1747 | } |
1748 | break; |
1749 | case 'N': |
1750 | while (len-- > 0) { |
1751 | fromstr = NEXTFROM; |
1752 | aulong = SvUV(fromstr); |
1753 | #ifdef HAS_HTONL |
1754 | aulong = PerlSock_htonl(aulong); |
1755 | #endif |
1756 | CAT32(cat, &aulong); |
1757 | } |
1758 | break; |
1759 | case 'V': |
1760 | while (len-- > 0) { |
1761 | fromstr = NEXTFROM; |
1762 | aulong = SvUV(fromstr); |
1763 | #ifdef HAS_HTOVL |
1764 | aulong = htovl(aulong); |
1765 | #endif |
1766 | CAT32(cat, &aulong); |
1767 | } |
1768 | break; |
1769 | case 'L': |
1770 | #if LONGSIZE != SIZE32 |
1771 | if (natint) { |
1772 | unsigned long aulong; |
1773 | |
1774 | while (len-- > 0) { |
1775 | fromstr = NEXTFROM; |
1776 | aulong = SvUV(fromstr); |
1777 | sv_catpvn(cat, (char *)&aulong, sizeof(unsigned long)); |
1778 | } |
1779 | } |
1780 | else |
1781 | #endif |
1782 | { |
1783 | while (len-- > 0) { |
1784 | fromstr = NEXTFROM; |
1785 | aulong = SvUV(fromstr); |
1786 | CAT32(cat, &aulong); |
1787 | } |
1788 | } |
1789 | break; |
1790 | case 'l': |
1791 | #if LONGSIZE != SIZE32 |
1792 | if (natint) { |
1793 | long along; |
1794 | |
1795 | while (len-- > 0) { |
1796 | fromstr = NEXTFROM; |
1797 | along = SvIV(fromstr); |
1798 | sv_catpvn(cat, (char *)&along, sizeof(long)); |
1799 | } |
1800 | } |
1801 | else |
1802 | #endif |
1803 | { |
1804 | while (len-- > 0) { |
1805 | fromstr = NEXTFROM; |
1806 | along = SvIV(fromstr); |
1807 | CAT32(cat, &along); |
1808 | } |
1809 | } |
1810 | break; |
1811 | #ifdef HAS_QUAD |
1812 | case 'Q': |
1813 | while (len-- > 0) { |
1814 | fromstr = NEXTFROM; |
1815 | auquad = (Uquad_t)SvUV(fromstr); |
1816 | sv_catpvn(cat, (char*)&auquad, sizeof(Uquad_t)); |
1817 | } |
1818 | break; |
1819 | case 'q': |
1820 | while (len-- > 0) { |
1821 | fromstr = NEXTFROM; |
1822 | aquad = (Quad_t)SvIV(fromstr); |
1823 | sv_catpvn(cat, (char*)&aquad, sizeof(Quad_t)); |
1824 | } |
1825 | break; |
1826 | #endif |
1827 | case 'P': |
1828 | len = 1; /* assume SV is correct length */ |
1829 | /* FALL THROUGH */ |
1830 | case 'p': |
1831 | while (len-- > 0) { |
1832 | fromstr = NEXTFROM; |
1833 | if (fromstr == &PL_sv_undef) |
1834 | aptr = NULL; |
1835 | else { |
1836 | STRLEN n_a; |
1837 | /* XXX better yet, could spirit away the string to |
1838 | * a safe spot and hang on to it until the result |
1839 | * of pack() (and all copies of the result) are |
1840 | * gone. |
1841 | */ |
1842 | if (ckWARN(WARN_PACK) && (SvTEMP(fromstr) |
1843 | || (SvPADTMP(fromstr) |
1844 | && !SvREADONLY(fromstr)))) |
1845 | { |
1846 | Perl_warner(aTHX_ WARN_PACK, |
1847 | "Attempt to pack pointer to temporary value"); |
1848 | } |
1849 | if (SvPOK(fromstr) || SvNIOK(fromstr)) |
1850 | aptr = SvPV(fromstr,n_a); |
1851 | else |
1852 | aptr = SvPV_force(fromstr,n_a); |
1853 | } |
1854 | sv_catpvn(cat, (char*)&aptr, sizeof(char*)); |
1855 | } |
1856 | break; |
1857 | case 'u': |
1858 | fromstr = NEXTFROM; |
1859 | aptr = SvPV(fromstr, fromlen); |
1860 | SvGROW(cat, fromlen * 4 / 3); |
1861 | if (len <= 1) |
1862 | len = 45; |
1863 | else |
1864 | len = len / 3 * 3; |
1865 | while (fromlen > 0) { |
1866 | I32 todo; |
1867 | |
1868 | if (fromlen > len) |
1869 | todo = len; |
1870 | else |
1871 | todo = fromlen; |
1872 | doencodes(cat, aptr, todo); |
1873 | fromlen -= todo; |
1874 | aptr += todo; |
1875 | } |
1876 | break; |
1877 | } |
1878 | } |
1879 | SvSETMAGIC(cat); |
1880 | SP = ORIGMARK; |
1881 | PUSHs(cat); |
1882 | RETURN; |
1883 | } |
1884 | #undef NEXTFROM |
1885 | |