Commit | Line | Data |
---|---|---|
a6ec74c1 JH |
1 | /* pp_pack.c |
2 | * | |
1129b882 NC |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
4 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others | |
a6ec74c1 JH |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
9 | */ | |
10 | ||
d31a8517 AT |
11 | /* |
12 | * He still hopefully carried some of his gear in his pack: a small tinder-box, | |
13 | * two small shallow pans, the smaller fitting into the larger; inside them a | |
14 | * wooden spoon, a short two-pronged fork and some skewers were stowed; and | |
15 | * hidden at the bottom of the pack in a flat wooden box a dwindling treasure, | |
16 | * some salt. | |
4ac71550 TC |
17 | * |
18 | * [p.653 of _The Lord of the Rings_, IV/iv: "Of Herbs and Stewed Rabbit"] | |
d31a8517 AT |
19 | */ |
20 | ||
166f8a29 DM |
21 | /* This file contains pp ("push/pop") functions that |
22 | * execute the opcodes that make up a perl program. A typical pp function | |
23 | * expects to find its arguments on the stack, and usually pushes its | |
24 | * results onto the stack, hence the 'pp' terminology. Each OP structure | |
25 | * contains a pointer to the relevant pp_foo() function. | |
26 | * | |
27 | * This particular file just contains pp_pack() and pp_unpack(). See the | |
28 | * other pp*.c files for the rest of the pp_ functions. | |
29 | */ | |
30 | ||
a6ec74c1 JH |
31 | #include "EXTERN.h" |
32 | #define PERL_IN_PP_PACK_C | |
33 | #include "perl.h" | |
34 | ||
f7fe979e AL |
35 | /* Types used by pack/unpack */ |
36 | typedef enum { | |
37 | e_no_len, /* no length */ | |
38 | e_number, /* number, [] */ | |
39 | e_star /* asterisk */ | |
40 | } howlen_t; | |
41 | ||
42 | typedef struct tempsym { | |
43 | const char* patptr; /* current template char */ | |
44 | const char* patend; /* one after last char */ | |
45 | const char* grpbeg; /* 1st char of ()-group */ | |
46 | const char* grpend; /* end of ()-group */ | |
47 | I32 code; /* template code (!<>) */ | |
f7fe979e AL |
48 | U32 flags; /* /=4, comma=2, pack=1 */ |
49 | /* and group modifiers */ | |
e1b825c1 Z |
50 | SSize_t length; /* length/repeat count */ |
51 | howlen_t howlen; /* how length is given */ | |
52 | int level; /* () nesting level */ | |
f7fe979e AL |
53 | STRLEN strbeg; /* offset of group start */ |
54 | struct tempsym *previous; /* previous group */ | |
55 | } tempsym_t; | |
56 | ||
57 | #define TEMPSYM_INIT(symptr, p, e, f) \ | |
58 | STMT_START { \ | |
59 | (symptr)->patptr = (p); \ | |
60 | (symptr)->patend = (e); \ | |
61 | (symptr)->grpbeg = NULL; \ | |
62 | (symptr)->grpend = NULL; \ | |
63 | (symptr)->grpend = NULL; \ | |
64 | (symptr)->code = 0; \ | |
65 | (symptr)->length = 0; \ | |
10edeb5d | 66 | (symptr)->howlen = e_no_len; \ |
f7fe979e AL |
67 | (symptr)->level = 0; \ |
68 | (symptr)->flags = (f); \ | |
69 | (symptr)->strbeg = 0; \ | |
70 | (symptr)->previous = NULL; \ | |
71 | } STMT_END | |
72 | ||
275663fa TC |
73 | typedef union { |
74 | NV nv; | |
75 | U8 bytes[sizeof(NV)]; | |
76 | } NV_bytes; | |
77 | ||
78 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) | |
79 | typedef union { | |
80 | long double ld; | |
81 | U8 bytes[sizeof(long double)]; | |
82 | } ld_bytes; | |
83 | #endif | |
84 | ||
f337b084 TH |
85 | #ifndef CHAR_BIT |
86 | # define CHAR_BIT 8 | |
7212898e | 87 | #endif |
3473cf63 RGS |
88 | /* Maximum number of bytes to which a byte can grow due to upgrade */ |
89 | #define UTF8_EXPAND 2 | |
7212898e | 90 | |
a6ec74c1 | 91 | /* |
a6ec74c1 JH |
92 | * Offset for integer pack/unpack. |
93 | * | |
94 | * On architectures where I16 and I32 aren't really 16 and 32 bits, | |
95 | * which for now are all Crays, pack and unpack have to play games. | |
96 | */ | |
97 | ||
98 | /* | |
99 | * These values are required for portability of pack() output. | |
100 | * If they're not right on your machine, then pack() and unpack() | |
101 | * wouldn't work right anyway; you'll need to apply the Cray hack. | |
102 | * (I'd like to check them with #if, but you can't use sizeof() in | |
103 | * the preprocessor.) --??? | |
104 | */ | |
105 | /* | |
106 | The appropriate SHORTSIZE, INTSIZE, LONGSIZE, and LONGLONGSIZE | |
107 | defines are now in config.h. --Andy Dougherty April 1998 | |
108 | */ | |
109 | #define SIZE16 2 | |
110 | #define SIZE32 4 | |
111 | ||
112 | /* CROSSCOMPILE and MULTIARCH are going to affect pp_pack() and pp_unpack(). | |
113 | --jhi Feb 1999 */ | |
114 | ||
41f35ffd | 115 | #if U16SIZE <= SIZE16 && U32SIZE <= SIZE32 |
08ca2aa3 TH |
116 | # define OFF16(p) ((char *) (p)) |
117 | # define OFF32(p) ((char *) (p)) | |
41f35ffd AC |
118 | #elif BYTEORDER == 0x1234 || BYTEORDER == 0x12345678 /* little-endian */ |
119 | # define OFF16(p) ((char*)(p)) | |
120 | # define OFF32(p) ((char*)(p)) | |
121 | #elif BYTEORDER == 0x4321 || BYTEORDER == 0x87654321 /* big-endian */ | |
122 | # define OFF16(p) ((char*)(p) + (sizeof(U16) - SIZE16)) | |
123 | # define OFF32(p) ((char*)(p) + (sizeof(U32) - SIZE32)) | |
124 | #else | |
125 | # error "bad cray byte order" | |
a6ec74c1 JH |
126 | #endif |
127 | ||
3a88beaa NC |
128 | #define PUSH16(utf8, cur, p, needs_swap) \ |
129 | PUSH_BYTES(utf8, cur, OFF16(p), SIZE16, needs_swap) | |
130 | #define PUSH32(utf8, cur, p, needs_swap) \ | |
131 | PUSH_BYTES(utf8, cur, OFF32(p), SIZE32, needs_swap) | |
08ca2aa3 | 132 | |
a1219b5e NC |
133 | #if BYTEORDER == 0x4321 || BYTEORDER == 0x87654321 /* big-endian */ |
134 | # define NEEDS_SWAP(d) (TYPE_ENDIANNESS(d) == TYPE_IS_LITTLE_ENDIAN) | |
135 | #elif BYTEORDER == 0x1234 || BYTEORDER == 0x12345678 /* little-endian */ | |
136 | # define NEEDS_SWAP(d) (TYPE_ENDIANNESS(d) == TYPE_IS_BIG_ENDIAN) | |
137 | #else | |
138 | # error "Unsupported byteorder" | |
20aa3a38 NC |
139 | /* Need to add code here to re-instate mixed endian support. |
140 | NEEDS_SWAP would need to hold a flag indicating which action to | |
9df874cd | 141 | take, and S_reverse_copy and the code in S_utf8_to_bytes would need |
20aa3a38 NC |
142 | logic adding to deal with any mixed-endian transformations needed. |
143 | */ | |
a1219b5e NC |
144 | #endif |
145 | ||
08ca2aa3 | 146 | /* Only to be used inside a loop (see the break) */ |
aaec8192 | 147 | #define SHIFT_BYTES(utf8, s, strend, buf, len, datumtype, needs_swap) \ |
08ca2aa3 | 148 | STMT_START { \ |
228e69a7 | 149 | if (UNLIKELY(utf8)) { \ |
9df874cd | 150 | if (!S_utf8_to_bytes(aTHX_ &s, strend, \ |
275663fa | 151 | (char *) (buf), len, datumtype)) break; \ |
08ca2aa3 | 152 | } else { \ |
228e69a7 | 153 | if (UNLIKELY(needs_swap)) \ |
20aa3a38 NC |
154 | S_reverse_copy(s, (char *) (buf), len); \ |
155 | else \ | |
156 | Copy(s, (char *) (buf), len, char); \ | |
275663fa | 157 | s += len; \ |
08ca2aa3 | 158 | } \ |
08ca2aa3 TH |
159 | } STMT_END |
160 | ||
aaec8192 NC |
161 | #define SHIFT16(utf8, s, strend, p, datumtype, needs_swap) \ |
162 | SHIFT_BYTES(utf8, s, strend, OFF16(p), SIZE16, datumtype, needs_swap) | |
7285e3f4 | 163 | |
aaec8192 NC |
164 | #define SHIFT32(utf8, s, strend, p, datumtype, needs_swap) \ |
165 | SHIFT_BYTES(utf8, s, strend, OFF32(p), SIZE32, datumtype, needs_swap) | |
7285e3f4 | 166 | |
aaec8192 NC |
167 | #define SHIFT_VAR(utf8, s, strend, var, datumtype, needs_swap) \ |
168 | SHIFT_BYTES(utf8, s, strend, &(var), sizeof(var), datumtype, needs_swap) | |
275663fa | 169 | |
3a88beaa NC |
170 | #define PUSH_VAR(utf8, aptr, var, needs_swap) \ |
171 | PUSH_BYTES(utf8, aptr, &(var), sizeof(var), needs_swap) | |
f337b084 | 172 | |
49704364 WL |
173 | /* Avoid stack overflow due to pathological templates. 100 should be plenty. */ |
174 | #define MAX_SUB_TEMPLATE_LEVEL 100 | |
175 | ||
66c611c5 | 176 | /* flags (note that type modifiers can also be used as flags!) */ |
f337b084 TH |
177 | #define FLAG_WAS_UTF8 0x40 |
178 | #define FLAG_PARSE_UTF8 0x20 /* Parse as utf8 */ | |
49704364 | 179 | #define FLAG_UNPACK_ONLY_ONE 0x10 |
f337b084 | 180 | #define FLAG_DO_UTF8 0x08 /* The underlying string is utf8 */ |
49704364 WL |
181 | #define FLAG_SLASH 0x04 |
182 | #define FLAG_COMMA 0x02 | |
183 | #define FLAG_PACK 0x01 | |
184 | ||
a6ec74c1 JH |
185 | STATIC SV * |
186 | S_mul128(pTHX_ SV *sv, U8 m) | |
187 | { | |
188 | STRLEN len; | |
189 | char *s = SvPV(sv, len); | |
190 | char *t; | |
a6ec74c1 | 191 | |
7918f24d NC |
192 | PERL_ARGS_ASSERT_MUL128; |
193 | ||
0f12654f | 194 | if (! memBEGINs(s, len, "0000")) { /* need to grow sv */ |
396482e1 | 195 | SV * const tmpNew = newSVpvs("0000000000"); |
a6ec74c1 JH |
196 | |
197 | sv_catsv(tmpNew, sv); | |
198 | SvREFCNT_dec(sv); /* free old sv */ | |
199 | sv = tmpNew; | |
200 | s = SvPV(sv, len); | |
201 | } | |
202 | t = s + len - 1; | |
203 | while (!*t) /* trailing '\0'? */ | |
204 | t--; | |
205 | while (t > s) { | |
f7fe979e | 206 | const U32 i = ((*t - '0') << 7) + m; |
eb160463 GS |
207 | *(t--) = '0' + (char)(i % 10); |
208 | m = (char)(i / 10); | |
a6ec74c1 JH |
209 | } |
210 | return (sv); | |
211 | } | |
212 | ||
213 | /* Explosives and implosives. */ | |
214 | ||
0860e090 KW |
215 | #define ISUUCHAR(ch) inRANGE(NATIVE_TO_LATIN1(ch), \ |
216 | NATIVE_TO_LATIN1(' '), \ | |
217 | NATIVE_TO_LATIN1('a') - 1) | |
a6ec74c1 | 218 | |
66c611c5 | 219 | /* type modifiers */ |
62f95557 | 220 | #define TYPE_IS_SHRIEKING 0x100 |
1109a392 MHM |
221 | #define TYPE_IS_BIG_ENDIAN 0x200 |
222 | #define TYPE_IS_LITTLE_ENDIAN 0x400 | |
f337b084 | 223 | #define TYPE_IS_PACK 0x800 |
1109a392 | 224 | #define TYPE_ENDIANNESS_MASK (TYPE_IS_BIG_ENDIAN|TYPE_IS_LITTLE_ENDIAN) |
66c611c5 | 225 | #define TYPE_MODIFIERS(t) ((t) & ~0xFF) |
1109a392 MHM |
226 | #define TYPE_NO_MODIFIERS(t) ((t) & 0xFF) |
227 | ||
7212898e NC |
228 | # define TYPE_ENDIANNESS(t) ((t) & TYPE_ENDIANNESS_MASK) |
229 | # define TYPE_NO_ENDIANNESS(t) ((t) & ~TYPE_ENDIANNESS_MASK) | |
230 | ||
231 | # define ENDIANNESS_ALLOWED_TYPES "sSiIlLqQjJfFdDpP(" | |
232 | ||
78d46eaa | 233 | #define PACK_SIZE_CANNOT_CSUM 0x80 |
f337b084 | 234 | #define PACK_SIZE_UNPREDICTABLE 0x40 /* Not a fixed size element */ |
78d46eaa NC |
235 | #define PACK_SIZE_MASK 0x3F |
236 | ||
4ad176ef | 237 | #include "packsizetables.inc" |
78d46eaa | 238 | |
20aa3a38 NC |
239 | static void |
240 | S_reverse_copy(const char *src, char *dest, STRLEN len) | |
241 | { | |
242 | dest += len; | |
243 | while (len--) | |
244 | *--dest = *src++; | |
245 | } | |
246 | ||
08ca2aa3 | 247 | STATIC U8 |
9df874cd | 248 | utf8_to_byte(pTHX_ const char **s, const char *end, I32 datumtype) |
08ca2aa3 | 249 | { |
08ca2aa3 | 250 | STRLEN retlen; |
df337714 KW |
251 | UV val; |
252 | ||
253 | if (*s >= end) { | |
254 | goto croak; | |
255 | } | |
256 | val = utf8n_to_uvchr((U8 *) *s, end-*s, &retlen, | |
f337b084 | 257 | ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY); |
df337714 KW |
258 | if (retlen == (STRLEN) -1) |
259 | croak: | |
f337b084 TH |
260 | Perl_croak(aTHX_ "Malformed UTF-8 string in '%c' format in unpack", |
261 | (int) TYPE_NO_MODIFIERS(datumtype)); | |
08ca2aa3 | 262 | if (val >= 0x100) { |
a2a5de95 NC |
263 | Perl_ck_warner(aTHX_ packWARN(WARN_UNPACK), |
264 | "Character in '%c' format wrapped in unpack", | |
265 | (int) TYPE_NO_MODIFIERS(datumtype)); | |
08ca2aa3 TH |
266 | val &= 0xff; |
267 | } | |
268 | *s += retlen; | |
fe2774ed | 269 | return (U8)val; |
08ca2aa3 TH |
270 | } |
271 | ||
f337b084 | 272 | #define SHIFT_BYTE(utf8, s, strend, datumtype) ((utf8) ? \ |
9df874cd | 273 | utf8_to_byte(aTHX_ &(s), (strend), (datumtype)) : \ |
08ca2aa3 TH |
274 | *(U8 *)(s)++) |
275 | ||
276 | STATIC bool | |
e1b825c1 | 277 | S_utf8_to_bytes(pTHX_ const char **s, const char *end, const char *buf, SSize_t buf_len, I32 datumtype) |
08ca2aa3 TH |
278 | { |
279 | UV val; | |
280 | STRLEN retlen; | |
f7fe979e | 281 | const char *from = *s; |
08ca2aa3 | 282 | int bad = 0; |
f7fe979e | 283 | const U32 flags = ckWARN(WARN_UTF8) ? |
08ca2aa3 | 284 | UTF8_CHECK_ONLY : (UTF8_CHECK_ONLY | UTF8_ALLOW_ANY); |
20aa3a38 NC |
285 | const bool needs_swap = NEEDS_SWAP(datumtype); |
286 | ||
228e69a7 | 287 | if (UNLIKELY(needs_swap)) |
20aa3a38 NC |
288 | buf += buf_len; |
289 | ||
08ca2aa3 TH |
290 | for (;buf_len > 0; buf_len--) { |
291 | if (from >= end) return FALSE; | |
f337b084 | 292 | val = utf8n_to_uvchr((U8 *) from, end-from, &retlen, flags); |
df337714 | 293 | if (retlen == (STRLEN) -1) { |
18c47def | 294 | from += UTF8_SAFE_SKIP(from, end); |
08ca2aa3 TH |
295 | bad |= 1; |
296 | } else from += retlen; | |
297 | if (val >= 0x100) { | |
298 | bad |= 2; | |
299 | val &= 0xff; | |
300 | } | |
228e69a7 | 301 | if (UNLIKELY(needs_swap)) |
20aa3a38 NC |
302 | *(U8 *)--buf = (U8)val; |
303 | else | |
304 | *(U8 *)buf++ = (U8)val; | |
08ca2aa3 TH |
305 | } |
306 | /* We have enough characters for the buffer. Did we have problems ? */ | |
307 | if (bad) { | |
308 | if (bad & 1) { | |
309 | /* Rewalk the string fragment while warning */ | |
f7fe979e | 310 | const char *ptr; |
e1b825c1 | 311 | const U32 flags = ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY; |
08ca2aa3 TH |
312 | for (ptr = *s; ptr < from; ptr += UTF8SKIP(ptr)) { |
313 | if (ptr >= end) break; | |
c80e42f3 | 314 | utf8n_to_uvchr((U8 *) ptr, end-ptr, &retlen, flags); |
08ca2aa3 TH |
315 | } |
316 | if (from > end) from = end; | |
317 | } | |
a2a5de95 NC |
318 | if ((bad & 2)) |
319 | Perl_ck_warner(aTHX_ packWARN(datumtype & TYPE_IS_PACK ? | |
f337b084 | 320 | WARN_PACK : WARN_UNPACK), |
a2a5de95 NC |
321 | "Character(s) in '%c' format wrapped in %s", |
322 | (int) TYPE_NO_MODIFIERS(datumtype), | |
323 | datumtype & TYPE_IS_PACK ? "pack" : "unpack"); | |
08ca2aa3 TH |
324 | } |
325 | *s = from; | |
326 | return TRUE; | |
327 | } | |
328 | ||
64844641 | 329 | STATIC char * |
d21d7215 KW |
330 | S_my_bytes_to_utf8(const U8 *start, STRLEN len, char *dest, const bool needs_swap) { |
331 | PERL_ARGS_ASSERT_MY_BYTES_TO_UTF8; | |
7918f24d | 332 | |
228e69a7 | 333 | if (UNLIKELY(needs_swap)) { |
3a88beaa NC |
334 | const U8 *p = start + len; |
335 | while (p-- > start) { | |
55d09dc8 | 336 | append_utf8_from_native_byte(*p, (U8 **) & dest); |
3a88beaa NC |
337 | } |
338 | } else { | |
339 | const U8 * const end = start + len; | |
340 | while (start < end) { | |
55d09dc8 | 341 | append_utf8_from_native_byte(*start, (U8 **) & dest); |
3a88beaa NC |
342 | start++; |
343 | } | |
f337b084 | 344 | } |
64844641 | 345 | return dest; |
f337b084 TH |
346 | } |
347 | ||
3a88beaa | 348 | #define PUSH_BYTES(utf8, cur, buf, len, needs_swap) \ |
230e1fce | 349 | STMT_START { \ |
228e69a7 | 350 | if (UNLIKELY(utf8)) \ |
d21d7215 | 351 | (cur) = my_bytes_to_utf8((U8 *) buf, len, (cur), needs_swap); \ |
230e1fce | 352 | else { \ |
228e69a7 | 353 | if (UNLIKELY(needs_swap)) \ |
3a88beaa NC |
354 | S_reverse_copy((char *)(buf), cur, len); \ |
355 | else \ | |
356 | Copy(buf, cur, len, char); \ | |
230e1fce NC |
357 | (cur) += (len); \ |
358 | } \ | |
f337b084 TH |
359 | } STMT_END |
360 | ||
f17fed50 TC |
361 | #define SAFE_UTF8_EXPAND(var) \ |
362 | STMT_START { \ | |
363 | if ((var) > SSize_t_MAX / UTF8_EXPAND) \ | |
364 | Perl_croak(aTHX_ "%s", "Out of memory during pack()"); \ | |
365 | (var) = (var) * UTF8_EXPAND; \ | |
366 | } STMT_END | |
367 | ||
368 | #define GROWING2(utf8, cat, start, cur, item_size, item_count) \ | |
369 | STMT_START { \ | |
370 | if (SSize_t_MAX / (item_size) < (item_count)) \ | |
371 | Perl_croak(aTHX_ "%s", "Out of memory during pack()"); \ | |
372 | GROWING((utf8), (cat), (start), (cur), (item_size) * (item_count)); \ | |
373 | } STMT_END | |
374 | ||
f337b084 TH |
375 | #define GROWING(utf8, cat, start, cur, in_len) \ |
376 | STMT_START { \ | |
377 | STRLEN glen = (in_len); \ | |
f17fed50 TC |
378 | STRLEN catcur = (STRLEN)((cur) - (start)); \ |
379 | if (utf8) SAFE_UTF8_EXPAND(glen); \ | |
380 | if (SSize_t_MAX - glen < catcur) \ | |
381 | Perl_croak(aTHX_ "%s", "Out of memory during pack()"); \ | |
382 | if (catcur + glen >= SvLEN(cat)) { \ | |
0bd48802 | 383 | (start) = sv_exp_grow(cat, glen); \ |
f337b084 TH |
384 | (cur) = (start) + SvCUR(cat); \ |
385 | } \ | |
386 | } STMT_END | |
387 | ||
388 | #define PUSH_GROWING_BYTES(utf8, cat, start, cur, buf, in_len) \ | |
389 | STMT_START { \ | |
f7fe979e | 390 | const STRLEN glen = (in_len); \ |
f337b084 | 391 | STRLEN gl = glen; \ |
f17fed50 | 392 | if (utf8) SAFE_UTF8_EXPAND(gl); \ |
f337b084 TH |
393 | if ((cur) + gl >= (start) + SvLEN(cat)) { \ |
394 | *cur = '\0'; \ | |
b162af07 | 395 | SvCUR_set((cat), (cur) - (start)); \ |
0bd48802 | 396 | (start) = sv_exp_grow(cat, gl); \ |
f337b084 TH |
397 | (cur) = (start) + SvCUR(cat); \ |
398 | } \ | |
3a88beaa | 399 | PUSH_BYTES(utf8, cur, buf, glen, 0); \ |
f337b084 TH |
400 | } STMT_END |
401 | ||
402 | #define PUSH_BYTE(utf8, s, byte) \ | |
403 | STMT_START { \ | |
404 | if (utf8) { \ | |
f7fe979e | 405 | const U8 au8 = (byte); \ |
d21d7215 | 406 | (s) = my_bytes_to_utf8(&au8, 1, (s), 0);\ |
f337b084 TH |
407 | } else *(U8 *)(s)++ = (byte); \ |
408 | } STMT_END | |
409 | ||
410 | /* Only to be used inside a loop (see the break) */ | |
411 | #define NEXT_UNI_VAL(val, cur, str, end, utf8_flags) \ | |
412 | STMT_START { \ | |
413 | STRLEN retlen; \ | |
414 | if (str >= end) break; \ | |
415 | val = utf8n_to_uvchr((U8 *) str, end-str, &retlen, utf8_flags); \ | |
df337714 | 416 | if (retlen == (STRLEN) -1) { \ |
f337b084 TH |
417 | *cur = '\0'; \ |
418 | Perl_croak(aTHX_ "Malformed UTF-8 string in pack"); \ | |
419 | } \ | |
420 | str += retlen; \ | |
421 | } STMT_END | |
422 | ||
f7fe979e AL |
423 | static const char *_action( const tempsym_t* symptr ) |
424 | { | |
10edeb5d | 425 | return (const char *)(( symptr->flags & FLAG_PACK ) ? "pack" : "unpack"); |
f7fe979e AL |
426 | } |
427 | ||
206947d2 | 428 | /* Returns the sizeof() struct described by pat */ |
e1b825c1 | 429 | STATIC SSize_t |
f337b084 | 430 | S_measure_struct(pTHX_ tempsym_t* symptr) |
206947d2 | 431 | { |
e1b825c1 | 432 | SSize_t total = 0; |
206947d2 | 433 | |
7918f24d NC |
434 | PERL_ARGS_ASSERT_MEASURE_STRUCT; |
435 | ||
49704364 | 436 | while (next_symbol(symptr)) { |
e1b825c1 | 437 | SSize_t len, size; |
f337b084 TH |
438 | |
439 | switch (symptr->howlen) { | |
fc241834 | 440 | case e_star: |
49704364 | 441 | Perl_croak(aTHX_ "Within []-length '*' not allowed in %s", |
f7fe979e | 442 | _action( symptr ) ); |
81d52ecd | 443 | |
f337b084 TH |
444 | default: |
445 | /* e_no_len and e_number */ | |
446 | len = symptr->length; | |
447 | break; | |
49704364 WL |
448 | } |
449 | ||
a7a3cfaa | 450 | size = packprops[TYPE_NO_ENDIANNESS(symptr->code)] & PACK_SIZE_MASK; |
80a13697 | 451 | if (!size) { |
e1b825c1 | 452 | SSize_t star; |
80a13697 NC |
453 | /* endianness doesn't influence the size of a type */ |
454 | switch(TYPE_NO_ENDIANNESS(symptr->code)) { | |
455 | default: | |
456 | Perl_croak(aTHX_ "Invalid type '%c' in %s", | |
457 | (int)TYPE_NO_MODIFIERS(symptr->code), | |
f7fe979e | 458 | _action( symptr ) ); |
28be1210 TH |
459 | case '.' | TYPE_IS_SHRIEKING: |
460 | case '@' | TYPE_IS_SHRIEKING: | |
80a13697 | 461 | case '@': |
28be1210 | 462 | case '.': |
80a13697 NC |
463 | case '/': |
464 | case 'U': /* XXXX Is it correct? */ | |
465 | case 'w': | |
466 | case 'u': | |
467 | Perl_croak(aTHX_ "Within []-length '%c' not allowed in %s", | |
28be1210 | 468 | (int) TYPE_NO_MODIFIERS(symptr->code), |
f7fe979e | 469 | _action( symptr ) ); |
80a13697 NC |
470 | case '%': |
471 | size = 0; | |
472 | break; | |
473 | case '(': | |
fc241834 RGS |
474 | { |
475 | tempsym_t savsym = *symptr; | |
476 | symptr->patptr = savsym.grpbeg; | |
477 | symptr->patend = savsym.grpend; | |
478 | /* XXXX Theoretically, we need to measure many times at | |
479 | different positions, since the subexpression may contain | |
480 | alignment commands, but be not of aligned length. | |
481 | Need to detect this and croak(). */ | |
482 | size = measure_struct(symptr); | |
483 | *symptr = savsym; | |
484 | break; | |
485 | } | |
80a13697 NC |
486 | case 'X' | TYPE_IS_SHRIEKING: |
487 | /* XXXX Is this useful? Then need to treat MEASURE_BACKWARDS. | |
488 | */ | |
489 | if (!len) /* Avoid division by 0 */ | |
490 | len = 1; | |
491 | len = total % len; /* Assumed: the start is aligned. */ | |
924ba076 | 492 | /* FALLTHROUGH */ |
80a13697 NC |
493 | case 'X': |
494 | size = -1; | |
495 | if (total < len) | |
f7fe979e | 496 | Perl_croak(aTHX_ "'X' outside of string in %s", _action( symptr ) ); |
80a13697 NC |
497 | break; |
498 | case 'x' | TYPE_IS_SHRIEKING: | |
499 | if (!len) /* Avoid division by 0 */ | |
500 | len = 1; | |
501 | star = total % len; /* Assumed: the start is aligned. */ | |
502 | if (star) /* Other portable ways? */ | |
503 | len = len - star; | |
504 | else | |
505 | len = 0; | |
924ba076 | 506 | /* FALLTHROUGH */ |
80a13697 NC |
507 | case 'x': |
508 | case 'A': | |
509 | case 'Z': | |
510 | case 'a': | |
80a13697 NC |
511 | size = 1; |
512 | break; | |
513 | case 'B': | |
514 | case 'b': | |
515 | len = (len + 7)/8; | |
516 | size = 1; | |
517 | break; | |
518 | case 'H': | |
519 | case 'h': | |
520 | len = (len + 1)/2; | |
521 | size = 1; | |
522 | break; | |
78d46eaa | 523 | |
80a13697 NC |
524 | case 'P': |
525 | len = 1; | |
526 | size = sizeof(char*); | |
78d46eaa NC |
527 | break; |
528 | } | |
206947d2 IZ |
529 | } |
530 | total += len * size; | |
531 | } | |
532 | return total; | |
533 | } | |
534 | ||
49704364 WL |
535 | |
536 | /* locate matching closing parenthesis or bracket | |
537 | * returns char pointer to char after match, or NULL | |
538 | */ | |
f7fe979e | 539 | STATIC const char * |
5aaab254 | 540 | S_group_end(pTHX_ const char *patptr, const char *patend, char ender) |
18529408 | 541 | { |
7918f24d NC |
542 | PERL_ARGS_ASSERT_GROUP_END; |
543 | ||
49704364 | 544 | while (patptr < patend) { |
f7fe979e | 545 | const char c = *patptr++; |
49704364 WL |
546 | |
547 | if (isSPACE(c)) | |
548 | continue; | |
549 | else if (c == ender) | |
550 | return patptr-1; | |
551 | else if (c == '#') { | |
552 | while (patptr < patend && *patptr != '\n') | |
553 | patptr++; | |
554 | continue; | |
555 | } else if (c == '(') | |
556 | patptr = group_end(patptr, patend, ')') + 1; | |
557 | else if (c == '[') | |
558 | patptr = group_end(patptr, patend, ']') + 1; | |
18529408 | 559 | } |
49704364 WL |
560 | Perl_croak(aTHX_ "No group ending character '%c' found in template", |
561 | ender); | |
a25b5927 | 562 | NOT_REACHED; /* NOTREACHED */ |
18529408 IZ |
563 | } |
564 | ||
49704364 WL |
565 | |
566 | /* Convert unsigned decimal number to binary. | |
567 | * Expects a pointer to the first digit and address of length variable | |
568 | * Advances char pointer to 1st non-digit char and returns number | |
fc241834 | 569 | */ |
f7fe979e | 570 | STATIC const char * |
e1b825c1 | 571 | S_get_num(pTHX_ const char *patptr, SSize_t *lenptr ) |
49704364 | 572 | { |
e1b825c1 | 573 | SSize_t len = *patptr++ - '0'; |
7918f24d NC |
574 | |
575 | PERL_ARGS_ASSERT_GET_NUM; | |
576 | ||
49704364 | 577 | while (isDIGIT(*patptr)) { |
e1b825c1 Z |
578 | SSize_t nlen = (len * 10) + (*patptr++ - '0'); |
579 | if (nlen < 0 || nlen/10 != len) | |
49704364 | 580 | Perl_croak(aTHX_ "pack/unpack repeat count overflow"); |
e1b825c1 | 581 | len = nlen; |
49704364 WL |
582 | } |
583 | *lenptr = len; | |
584 | return patptr; | |
585 | } | |
586 | ||
587 | /* The marvellous template parsing routine: Using state stored in *symptr, | |
588 | * locates next template code and count | |
589 | */ | |
590 | STATIC bool | |
f337b084 | 591 | S_next_symbol(pTHX_ tempsym_t* symptr ) |
18529408 | 592 | { |
f7fe979e | 593 | const char* patptr = symptr->patptr; |
0bcc34c2 | 594 | const char* const patend = symptr->patend; |
49704364 | 595 | |
7918f24d NC |
596 | PERL_ARGS_ASSERT_NEXT_SYMBOL; |
597 | ||
49704364 WL |
598 | symptr->flags &= ~FLAG_SLASH; |
599 | ||
600 | while (patptr < patend) { | |
601 | if (isSPACE(*patptr)) | |
602 | patptr++; | |
603 | else if (*patptr == '#') { | |
604 | patptr++; | |
605 | while (patptr < patend && *patptr != '\n') | |
606 | patptr++; | |
607 | if (patptr < patend) | |
608 | patptr++; | |
609 | } else { | |
fc241834 | 610 | /* We should have found a template code */ |
49704364 | 611 | I32 code = *patptr++ & 0xFF; |
66c611c5 | 612 | U32 inherited_modifiers = 0; |
49704364 WL |
613 | |
614 | if (code == ','){ /* grandfather in commas but with a warning */ | |
615 | if (((symptr->flags & FLAG_COMMA) == 0) && ckWARN(WARN_UNPACK)){ | |
616 | symptr->flags |= FLAG_COMMA; | |
617 | Perl_warner(aTHX_ packWARN(WARN_UNPACK), | |
f7fe979e | 618 | "Invalid type ',' in %s", _action( symptr ) ); |
49704364 WL |
619 | } |
620 | continue; | |
621 | } | |
fc241834 | 622 | |
49704364 | 623 | /* for '(', skip to ')' */ |
fc241834 | 624 | if (code == '(') { |
49704364 WL |
625 | if( isDIGIT(*patptr) || *patptr == '*' || *patptr == '[' ) |
626 | Perl_croak(aTHX_ "()-group starts with a count in %s", | |
f7fe979e | 627 | _action( symptr ) ); |
49704364 WL |
628 | symptr->grpbeg = patptr; |
629 | patptr = 1 + ( symptr->grpend = group_end(patptr, patend, ')') ); | |
630 | if( symptr->level >= MAX_SUB_TEMPLATE_LEVEL ) | |
631 | Perl_croak(aTHX_ "Too deeply nested ()-groups in %s", | |
f7fe979e | 632 | _action( symptr ) ); |
49704364 WL |
633 | } |
634 | ||
66c611c5 MHM |
635 | /* look for group modifiers to inherit */ |
636 | if (TYPE_ENDIANNESS(symptr->flags)) { | |
637 | if (strchr(ENDIANNESS_ALLOWED_TYPES, TYPE_NO_MODIFIERS(code))) | |
638 | inherited_modifiers |= TYPE_ENDIANNESS(symptr->flags); | |
639 | } | |
640 | ||
1109a392 MHM |
641 | /* look for modifiers */ |
642 | while (patptr < patend) { | |
b7787f18 AL |
643 | const char *allowed; |
644 | I32 modifier; | |
1109a392 MHM |
645 | switch (*patptr) { |
646 | case '!': | |
647 | modifier = TYPE_IS_SHRIEKING; | |
f8e5a5db | 648 | allowed = "sSiIlLxXnNvV@."; |
1109a392 MHM |
649 | break; |
650 | case '>': | |
651 | modifier = TYPE_IS_BIG_ENDIAN; | |
66c611c5 | 652 | allowed = ENDIANNESS_ALLOWED_TYPES; |
1109a392 MHM |
653 | break; |
654 | case '<': | |
655 | modifier = TYPE_IS_LITTLE_ENDIAN; | |
66c611c5 | 656 | allowed = ENDIANNESS_ALLOWED_TYPES; |
1109a392 MHM |
657 | break; |
658 | default: | |
b7787f18 AL |
659 | allowed = ""; |
660 | modifier = 0; | |
1109a392 MHM |
661 | break; |
662 | } | |
66c611c5 | 663 | |
1109a392 MHM |
664 | if (modifier == 0) |
665 | break; | |
66c611c5 | 666 | |
1109a392 MHM |
667 | if (!strchr(allowed, TYPE_NO_MODIFIERS(code))) |
668 | Perl_croak(aTHX_ "'%c' allowed only after types %s in %s", *patptr, | |
f7fe979e | 669 | allowed, _action( symptr ) ); |
66c611c5 MHM |
670 | |
671 | if (TYPE_ENDIANNESS(code | modifier) == TYPE_ENDIANNESS_MASK) | |
1109a392 | 672 | Perl_croak(aTHX_ "Can't use both '<' and '>' after type '%c' in %s", |
f7fe979e | 673 | (int) TYPE_NO_MODIFIERS(code), _action( symptr ) ); |
66c611c5 MHM |
674 | else if (TYPE_ENDIANNESS(code | modifier | inherited_modifiers) == |
675 | TYPE_ENDIANNESS_MASK) | |
676 | Perl_croak(aTHX_ "Can't use '%c' in a group with different byte-order in %s", | |
f7fe979e | 677 | *patptr, _action( symptr ) ); |
66c611c5 | 678 | |
a2a5de95 NC |
679 | if ((code & modifier)) { |
680 | Perl_ck_warner(aTHX_ packWARN(WARN_UNPACK), | |
681 | "Duplicate modifier '%c' after '%c' in %s", | |
682 | *patptr, (int) TYPE_NO_MODIFIERS(code), | |
683 | _action( symptr ) ); | |
1109a392 | 684 | } |
66c611c5 | 685 | |
1109a392 MHM |
686 | code |= modifier; |
687 | patptr++; | |
49704364 WL |
688 | } |
689 | ||
66c611c5 MHM |
690 | /* inherit modifiers */ |
691 | code |= inherited_modifiers; | |
692 | ||
fc241834 | 693 | /* look for count and/or / */ |
49704364 WL |
694 | if (patptr < patend) { |
695 | if (isDIGIT(*patptr)) { | |
696 | patptr = get_num( patptr, &symptr->length ); | |
697 | symptr->howlen = e_number; | |
698 | ||
699 | } else if (*patptr == '*') { | |
700 | patptr++; | |
701 | symptr->howlen = e_star; | |
702 | ||
703 | } else if (*patptr == '[') { | |
f7fe979e | 704 | const char* lenptr = ++patptr; |
49704364 WL |
705 | symptr->howlen = e_number; |
706 | patptr = group_end( patptr, patend, ']' ) + 1; | |
707 | /* what kind of [] is it? */ | |
708 | if (isDIGIT(*lenptr)) { | |
709 | lenptr = get_num( lenptr, &symptr->length ); | |
710 | if( *lenptr != ']' ) | |
711 | Perl_croak(aTHX_ "Malformed integer in [] in %s", | |
f7fe979e | 712 | _action( symptr ) ); |
49704364 WL |
713 | } else { |
714 | tempsym_t savsym = *symptr; | |
715 | symptr->patend = patptr-1; | |
716 | symptr->patptr = lenptr; | |
717 | savsym.length = measure_struct(symptr); | |
718 | *symptr = savsym; | |
719 | } | |
720 | } else { | |
721 | symptr->howlen = e_no_len; | |
722 | symptr->length = 1; | |
723 | } | |
724 | ||
725 | /* try to find / */ | |
726 | while (patptr < patend) { | |
727 | if (isSPACE(*patptr)) | |
728 | patptr++; | |
729 | else if (*patptr == '#') { | |
730 | patptr++; | |
731 | while (patptr < patend && *patptr != '\n') | |
732 | patptr++; | |
733 | if (patptr < patend) | |
734 | patptr++; | |
735 | } else { | |
66c611c5 | 736 | if (*patptr == '/') { |
49704364 WL |
737 | symptr->flags |= FLAG_SLASH; |
738 | patptr++; | |
66c611c5 MHM |
739 | if (patptr < patend && |
740 | (isDIGIT(*patptr) || *patptr == '*' || *patptr == '[')) | |
49704364 | 741 | Perl_croak(aTHX_ "'/' does not take a repeat count in %s", |
f7fe979e | 742 | _action( symptr ) ); |
49704364 WL |
743 | } |
744 | break; | |
745 | } | |
18529408 | 746 | } |
49704364 WL |
747 | } else { |
748 | /* at end - no count, no / */ | |
749 | symptr->howlen = e_no_len; | |
750 | symptr->length = 1; | |
751 | } | |
752 | ||
753 | symptr->code = code; | |
fc241834 | 754 | symptr->patptr = patptr; |
49704364 | 755 | return TRUE; |
18529408 | 756 | } |
49704364 | 757 | } |
fc241834 | 758 | symptr->patptr = patptr; |
49704364 | 759 | return FALSE; |
18529408 IZ |
760 | } |
761 | ||
18529408 | 762 | /* |
fc241834 | 763 | There is no way to cleanly handle the case where we should process the |
08ca2aa3 | 764 | string per byte in its upgraded form while it's really in downgraded form |
fc241834 RGS |
765 | (e.g. estimates like strend-s as an upper bound for the number of |
766 | characters left wouldn't work). So if we foresee the need of this | |
767 | (pattern starts with U or contains U0), we want to work on the encoded | |
768 | version of the string. Users are advised to upgrade their pack string | |
08ca2aa3 TH |
769 | themselves if they need to do a lot of unpacks like this on it |
770 | */ | |
fc241834 | 771 | STATIC bool |
08ca2aa3 TH |
772 | need_utf8(const char *pat, const char *patend) |
773 | { | |
774 | bool first = TRUE; | |
7918f24d NC |
775 | |
776 | PERL_ARGS_ASSERT_NEED_UTF8; | |
777 | ||
08ca2aa3 TH |
778 | while (pat < patend) { |
779 | if (pat[0] == '#') { | |
780 | pat++; | |
f7fe979e | 781 | pat = (const char *) memchr(pat, '\n', patend-pat); |
08ca2aa3 TH |
782 | if (!pat) return FALSE; |
783 | } else if (pat[0] == 'U') { | |
784 | if (first || pat[1] == '0') return TRUE; | |
785 | } else first = FALSE; | |
786 | pat++; | |
787 | } | |
788 | return FALSE; | |
789 | } | |
790 | ||
791 | STATIC char | |
792 | first_symbol(const char *pat, const char *patend) { | |
7918f24d NC |
793 | PERL_ARGS_ASSERT_FIRST_SYMBOL; |
794 | ||
08ca2aa3 TH |
795 | while (pat < patend) { |
796 | if (pat[0] != '#') return pat[0]; | |
797 | pat++; | |
f7fe979e | 798 | pat = (const char *) memchr(pat, '\n', patend-pat); |
08ca2aa3 TH |
799 | if (!pat) return 0; |
800 | pat++; | |
801 | } | |
802 | return 0; | |
803 | } | |
804 | ||
805 | /* | |
dcccc8ff | 806 | |
7accc089 JH |
807 | =for apidoc unpackstring |
808 | ||
796b6530 | 809 | The engine implementing the C<unpack()> Perl function. |
21ebfc7a | 810 | |
796b6530 KW |
811 | Using the template C<pat..patend>, this function unpacks the string |
812 | C<s..strend> into a number of mortal SVs, which it pushes onto the perl | |
813 | argument (C<@_>) stack (so you will need to issue a C<PUTBACK> before and | |
72d33970 | 814 | C<SPAGAIN> after the call to this function). It returns the number of |
21ebfc7a DM |
815 | pushed elements. |
816 | ||
796b6530 KW |
817 | The C<strend> and C<patend> pointers should point to the byte following the |
818 | last character of each string. | |
21ebfc7a DM |
819 | |
820 | Although this function returns its values on the perl argument stack, it | |
821 | doesn't take any parameters from that stack (and thus in particular | |
796b6530 | 822 | there's no need to do a C<PUSHMARK> before calling it, unlike L</call_pv> for |
21ebfc7a | 823 | example). |
7accc089 JH |
824 | |
825 | =cut */ | |
826 | ||
e1b825c1 | 827 | SSize_t |
f7fe979e | 828 | Perl_unpackstring(pTHX_ const char *pat, const char *patend, const char *s, const char *strend, U32 flags) |
7accc089 | 829 | { |
f7fe979e | 830 | tempsym_t sym; |
08ca2aa3 | 831 | |
7918f24d NC |
832 | PERL_ARGS_ASSERT_UNPACKSTRING; |
833 | ||
f337b084 | 834 | if (flags & FLAG_DO_UTF8) flags |= FLAG_WAS_UTF8; |
08ca2aa3 TH |
835 | else if (need_utf8(pat, patend)) { |
836 | /* We probably should try to avoid this in case a scalar context call | |
837 | wouldn't get to the "U0" */ | |
838 | STRLEN len = strend - s; | |
230e1fce | 839 | s = (char *) bytes_to_utf8((U8 *) s, &len); |
08ca2aa3 TH |
840 | SAVEFREEPV(s); |
841 | strend = s + len; | |
f337b084 | 842 | flags |= FLAG_DO_UTF8; |
08ca2aa3 TH |
843 | } |
844 | ||
f337b084 TH |
845 | if (first_symbol(pat, patend) != 'U' && (flags & FLAG_DO_UTF8)) |
846 | flags |= FLAG_PARSE_UTF8; | |
08ca2aa3 | 847 | |
f7fe979e | 848 | TEMPSYM_INIT(&sym, pat, patend, flags); |
7accc089 JH |
849 | |
850 | return unpack_rec(&sym, s, s, strend, NULL ); | |
851 | } | |
852 | ||
e1b825c1 | 853 | STATIC SSize_t |
f7fe979e | 854 | S_unpack_rec(pTHX_ tempsym_t* symptr, const char *s, const char *strbeg, const char *strend, const char **new_s ) |
49704364 | 855 | { |
20b7effb | 856 | dSP; |
3297d27d | 857 | SV *sv = NULL; |
e1b825c1 | 858 | const SSize_t start_sp_offset = SP - PL_stack_base; |
49704364 | 859 | howlen_t howlen; |
e1b825c1 | 860 | SSize_t checksum = 0; |
92d41999 | 861 | UV cuv = 0; |
a6ec74c1 | 862 | NV cdouble = 0.0; |
e1b825c1 | 863 | const SSize_t bits_in_uv = CHAR_BIT * sizeof(cuv); |
49704364 | 864 | bool beyond = FALSE; |
21c16052 | 865 | bool explicit_length; |
9e27e96a | 866 | const bool unpack_only_one = (symptr->flags & FLAG_UNPACK_ONLY_ONE) != 0; |
f337b084 | 867 | bool utf8 = (symptr->flags & FLAG_PARSE_UTF8) ? 1 : 0; |
7918f24d NC |
868 | |
869 | PERL_ARGS_ASSERT_UNPACK_REC; | |
870 | ||
28be1210 | 871 | symptr->strbeg = s - strbeg; |
49704364 | 872 | |
49704364 | 873 | while (next_symbol(symptr)) { |
a7a3cfaa | 874 | packprops_t props; |
e1b825c1 | 875 | SSize_t len; |
f337b084 | 876 | I32 datumtype = symptr->code; |
a1219b5e | 877 | bool needs_swap; |
206947d2 | 878 | /* do first one only unless in list context |
08ca2aa3 | 879 | / is implemented by unpacking the count, then popping it from the |
206947d2 | 880 | stack, so must check that we're not in the middle of a / */ |
49704364 | 881 | if ( unpack_only_one |
206947d2 | 882 | && (SP - PL_stack_base == start_sp_offset + 1) |
49704364 | 883 | && (datumtype != '/') ) /* XXX can this be omitted */ |
206947d2 | 884 | break; |
49704364 | 885 | |
f337b084 | 886 | switch (howlen = symptr->howlen) { |
fc241834 RGS |
887 | case e_star: |
888 | len = strend - strbeg; /* long enough */ | |
49704364 | 889 | break; |
f337b084 TH |
890 | default: |
891 | /* e_no_len and e_number */ | |
892 | len = symptr->length; | |
893 | break; | |
49704364 | 894 | } |
18529408 | 895 | |
21c16052 | 896 | explicit_length = TRUE; |
a6ec74c1 | 897 | redo_switch: |
49704364 | 898 | beyond = s >= strend; |
a7a3cfaa TH |
899 | |
900 | props = packprops[TYPE_NO_ENDIANNESS(datumtype)]; | |
901 | if (props) { | |
902 | /* props nonzero means we can process this letter. */ | |
e1b825c1 Z |
903 | const SSize_t size = props & PACK_SIZE_MASK; |
904 | const SSize_t howmany = (strend - s) / size; | |
a7a3cfaa TH |
905 | if (len > howmany) |
906 | len = howmany; | |
907 | ||
908 | if (!checksum || (props & PACK_SIZE_CANNOT_CSUM)) { | |
909 | if (len && unpack_only_one) len = 1; | |
910 | EXTEND(SP, len); | |
911 | EXTEND_MORTAL(len); | |
78d46eaa NC |
912 | } |
913 | } | |
a7a3cfaa | 914 | |
a1219b5e NC |
915 | needs_swap = NEEDS_SWAP(datumtype); |
916 | ||
1109a392 | 917 | switch(TYPE_NO_ENDIANNESS(datumtype)) { |
a6ec74c1 | 918 | default: |
1109a392 | 919 | Perl_croak(aTHX_ "Invalid type '%c' in unpack", (int)TYPE_NO_MODIFIERS(datumtype) ); |
49704364 | 920 | |
a6ec74c1 | 921 | case '%': |
49704364 | 922 | if (howlen == e_no_len) |
18529408 | 923 | len = 16; /* len is not specified */ |
a6ec74c1 | 924 | checksum = len; |
92d41999 | 925 | cuv = 0; |
a6ec74c1 | 926 | cdouble = 0; |
18529408 | 927 | continue; |
81d52ecd | 928 | |
18529408 IZ |
929 | case '(': |
930 | { | |
49704364 | 931 | tempsym_t savsym = *symptr; |
9e27e96a | 932 | const U32 group_modifiers = TYPE_MODIFIERS(datumtype & ~symptr->flags); |
66c611c5 | 933 | symptr->flags |= group_modifiers; |
49704364 | 934 | symptr->patend = savsym.grpend; |
28be1210 | 935 | symptr->previous = &savsym; |
49704364 | 936 | symptr->level++; |
18529408 | 937 | PUTBACK; |
c6f750d1 | 938 | if (len && unpack_only_one) len = 1; |
18529408 | 939 | while (len--) { |
49704364 | 940 | symptr->patptr = savsym.grpbeg; |
f337b084 TH |
941 | if (utf8) symptr->flags |= FLAG_PARSE_UTF8; |
942 | else symptr->flags &= ~FLAG_PARSE_UTF8; | |
08ca2aa3 TH |
943 | unpack_rec(symptr, s, strbeg, strend, &s); |
944 | if (s == strend && savsym.howlen == e_star) | |
49704364 | 945 | break; /* No way to continue */ |
18529408 IZ |
946 | } |
947 | SPAGAIN; | |
28be1210 | 948 | savsym.flags = symptr->flags & ~group_modifiers; |
49704364 | 949 | *symptr = savsym; |
18529408 IZ |
950 | break; |
951 | } | |
28be1210 | 952 | case '.' | TYPE_IS_SHRIEKING: |
28be1210 | 953 | case '.': { |
9e27e96a | 954 | const char *from; |
28be1210 | 955 | SV *sv; |
9e27e96a | 956 | const bool u8 = utf8 && !(datumtype & TYPE_IS_SHRIEKING); |
28be1210 TH |
957 | if (howlen == e_star) from = strbeg; |
958 | else if (len <= 0) from = s; | |
959 | else { | |
960 | tempsym_t *group = symptr; | |
961 | ||
962 | while (--len && group) group = group->previous; | |
963 | from = group ? strbeg + group->strbeg : strbeg; | |
964 | } | |
965 | sv = from <= s ? | |
00646304 CB |
966 | newSVuv( u8 ? (UV) utf8_length((const U8*)from, (const U8*)s) : (UV) (s-from)) : |
967 | newSViv(-(u8 ? (IV) utf8_length((const U8*)s, (const U8*)from) : (IV) (from-s))); | |
6e449a3a | 968 | mXPUSHs(sv); |
28be1210 TH |
969 | break; |
970 | } | |
28be1210 | 971 | case '@' | TYPE_IS_SHRIEKING: |
a6ec74c1 | 972 | case '@': |
28be1210 | 973 | s = strbeg + symptr->strbeg; |
28be1210 | 974 | if (utf8 && !(datumtype & TYPE_IS_SHRIEKING)) |
28be1210 | 975 | { |
08ca2aa3 TH |
976 | while (len > 0) { |
977 | if (s >= strend) | |
978 | Perl_croak(aTHX_ "'@' outside of string in unpack"); | |
979 | s += UTF8SKIP(s); | |
980 | len--; | |
981 | } | |
982 | if (s > strend) | |
983 | Perl_croak(aTHX_ "'@' outside of string with malformed UTF-8 in unpack"); | |
984 | } else { | |
28be1210 | 985 | if (strend-s < len) |
fc241834 | 986 | Perl_croak(aTHX_ "'@' outside of string in unpack"); |
28be1210 | 987 | s += len; |
08ca2aa3 | 988 | } |
a6ec74c1 | 989 | break; |
62f95557 IZ |
990 | case 'X' | TYPE_IS_SHRIEKING: |
991 | if (!len) /* Avoid division by 0 */ | |
992 | len = 1; | |
08ca2aa3 | 993 | if (utf8) { |
f7fe979e | 994 | const char *hop, *last; |
e1b825c1 | 995 | SSize_t l = len; |
f337b084 TH |
996 | hop = last = strbeg; |
997 | while (hop < s) { | |
998 | hop += UTF8SKIP(hop); | |
999 | if (--l == 0) { | |
08ca2aa3 | 1000 | last = hop; |
f337b084 TH |
1001 | l = len; |
1002 | } | |
fc241834 | 1003 | } |
f337b084 TH |
1004 | if (last > s) |
1005 | Perl_croak(aTHX_ "Malformed UTF-8 string in unpack"); | |
08ca2aa3 TH |
1006 | s = last; |
1007 | break; | |
f337b084 TH |
1008 | } |
1009 | len = (s - strbeg) % len; | |
924ba076 | 1010 | /* FALLTHROUGH */ |
a6ec74c1 | 1011 | case 'X': |
08ca2aa3 TH |
1012 | if (utf8) { |
1013 | while (len > 0) { | |
1014 | if (s <= strbeg) | |
1015 | Perl_croak(aTHX_ "'X' outside of string in unpack"); | |
f337b084 | 1016 | while (--s, UTF8_IS_CONTINUATION(*s)) { |
08ca2aa3 TH |
1017 | if (s <= strbeg) |
1018 | Perl_croak(aTHX_ "'X' outside of string in unpack"); | |
1019 | } | |
1020 | len--; | |
1021 | } | |
1022 | } else { | |
fc241834 RGS |
1023 | if (len > s - strbeg) |
1024 | Perl_croak(aTHX_ "'X' outside of string in unpack" ); | |
1025 | s -= len; | |
08ca2aa3 | 1026 | } |
a6ec74c1 | 1027 | break; |
9e27e96a | 1028 | case 'x' | TYPE_IS_SHRIEKING: { |
e1b825c1 | 1029 | SSize_t ai32; |
62f95557 IZ |
1030 | if (!len) /* Avoid division by 0 */ |
1031 | len = 1; | |
230e1fce NC |
1032 | if (utf8) ai32 = utf8_length((U8 *) strbeg, (U8 *) s) % len; |
1033 | else ai32 = (s - strbeg) % len; | |
08ca2aa3 TH |
1034 | if (ai32 == 0) break; |
1035 | len -= ai32; | |
9e27e96a | 1036 | } |
924ba076 | 1037 | /* FALLTHROUGH */ |
a6ec74c1 | 1038 | case 'x': |
08ca2aa3 TH |
1039 | if (utf8) { |
1040 | while (len>0) { | |
1041 | if (s >= strend) | |
1042 | Perl_croak(aTHX_ "'x' outside of string in unpack"); | |
1043 | s += UTF8SKIP(s); | |
1044 | len--; | |
1045 | } | |
1046 | } else { | |
fc241834 RGS |
1047 | if (len > strend - s) |
1048 | Perl_croak(aTHX_ "'x' outside of string in unpack"); | |
1049 | s += len; | |
f337b084 | 1050 | } |
a6ec74c1 JH |
1051 | break; |
1052 | case '/': | |
49704364 | 1053 | Perl_croak(aTHX_ "'/' must follow a numeric type in unpack"); |
81d52ecd | 1054 | |
a6ec74c1 JH |
1055 | case 'A': |
1056 | case 'Z': | |
1057 | case 'a': | |
08ca2aa3 TH |
1058 | if (checksum) { |
1059 | /* Preliminary length estimate is assumed done in 'W' */ | |
1060 | if (len > strend - s) len = strend - s; | |
1061 | goto W_checksum; | |
1062 | } | |
1063 | if (utf8) { | |
e1b825c1 | 1064 | SSize_t l; |
f7fe979e | 1065 | const char *hop; |
08ca2aa3 TH |
1066 | for (l=len, hop=s; l>0; l--, hop += UTF8SKIP(hop)) { |
1067 | if (hop >= strend) { | |
1068 | if (hop > strend) | |
1069 | Perl_croak(aTHX_ "Malformed UTF-8 string in unpack"); | |
1070 | break; | |
fc241834 | 1071 | } |
a6ec74c1 | 1072 | } |
08ca2aa3 TH |
1073 | if (hop > strend) |
1074 | Perl_croak(aTHX_ "Malformed UTF-8 string in unpack"); | |
1075 | len = hop - s; | |
1076 | } else if (len > strend - s) | |
1077 | len = strend - s; | |
1078 | ||
1079 | if (datumtype == 'Z') { | |
1080 | /* 'Z' strips stuff after first null */ | |
f7fe979e | 1081 | const char *ptr, *end; |
f337b084 TH |
1082 | end = s + len; |
1083 | for (ptr = s; ptr < end; ptr++) if (*ptr == 0) break; | |
08ca2aa3 TH |
1084 | sv = newSVpvn(s, ptr-s); |
1085 | if (howlen == e_star) /* exact for 'Z*' */ | |
1086 | len = ptr-s + (ptr != strend ? 1 : 0); | |
1087 | } else if (datumtype == 'A') { | |
1088 | /* 'A' strips both nulls and spaces */ | |
f7fe979e | 1089 | const char *ptr; |
18bdf90a | 1090 | if (utf8 && (symptr->flags & FLAG_WAS_UTF8)) { |
7a207065 KW |
1091 | for (ptr = s+len-1; ptr >= s; ptr--) { |
1092 | if ( *ptr != 0 | |
1093 | && !UTF8_IS_CONTINUATION(*ptr) | |
1094 | && !isSPACE_utf8_safe(ptr, strend)) | |
1095 | { | |
1096 | break; | |
1097 | } | |
1098 | } | |
18bdf90a TH |
1099 | if (ptr >= s) ptr += UTF8SKIP(ptr); |
1100 | else ptr++; | |
28be1210 | 1101 | if (ptr > s+len) |
18bdf90a TH |
1102 | Perl_croak(aTHX_ "Malformed UTF-8 string in unpack"); |
1103 | } else { | |
1104 | for (ptr = s+len-1; ptr >= s; ptr--) | |
1105 | if (*ptr != 0 && !isSPACE(*ptr)) break; | |
1106 | ptr++; | |
1107 | } | |
08ca2aa3 TH |
1108 | sv = newSVpvn(s, ptr-s); |
1109 | } else sv = newSVpvn(s, len); | |
1110 | ||
1111 | if (utf8) { | |
1112 | SvUTF8_on(sv); | |
1113 | /* Undo any upgrade done due to need_utf8() */ | |
f337b084 | 1114 | if (!(symptr->flags & FLAG_WAS_UTF8)) |
08ca2aa3 | 1115 | sv_utf8_downgrade(sv, 0); |
a6ec74c1 | 1116 | } |
6e449a3a | 1117 | mXPUSHs(sv); |
08ca2aa3 | 1118 | s += len; |
a6ec74c1 JH |
1119 | break; |
1120 | case 'B': | |
08ca2aa3 TH |
1121 | case 'b': { |
1122 | char *str; | |
49704364 | 1123 | if (howlen == e_star || len > (strend - s) * 8) |
a6ec74c1 JH |
1124 | len = (strend - s) * 8; |
1125 | if (checksum) { | |
f337b084 | 1126 | if (utf8) |
08ca2aa3 | 1127 | while (len >= 8 && s < strend) { |
9df874cd | 1128 | cuv += PL_bitcount[utf8_to_byte(aTHX_ &s, strend, datumtype)]; |
08ca2aa3 TH |
1129 | len -= 8; |
1130 | } | |
f337b084 | 1131 | else |
fc241834 | 1132 | while (len >= 8) { |
08ca2aa3 | 1133 | cuv += PL_bitcount[*(U8 *)s++]; |
fc241834 RGS |
1134 | len -= 8; |
1135 | } | |
08ca2aa3 TH |
1136 | if (len && s < strend) { |
1137 | U8 bits; | |
f337b084 TH |
1138 | bits = SHIFT_BYTE(utf8, s, strend, datumtype); |
1139 | if (datumtype == 'b') | |
a6ec74c1 | 1140 | while (len-- > 0) { |
92d41999 | 1141 | if (bits & 1) cuv++; |
a6ec74c1 JH |
1142 | bits >>= 1; |
1143 | } | |
f337b084 | 1144 | else |
a6ec74c1 | 1145 | while (len-- > 0) { |
08ca2aa3 | 1146 | if (bits & 0x80) cuv++; |
a6ec74c1 JH |
1147 | bits <<= 1; |
1148 | } | |
fc241834 | 1149 | } |
a6ec74c1 JH |
1150 | break; |
1151 | } | |
08ca2aa3 | 1152 | |
561b68a9 | 1153 | sv = sv_2mortal(newSV(len ? len : 1)); |
a6ec74c1 JH |
1154 | SvPOK_on(sv); |
1155 | str = SvPVX(sv); | |
1156 | if (datumtype == 'b') { | |
f337b084 | 1157 | U8 bits = 0; |
e1b825c1 | 1158 | const SSize_t ai32 = len; |
08ca2aa3 TH |
1159 | for (len = 0; len < ai32; len++) { |
1160 | if (len & 7) bits >>= 1; | |
1161 | else if (utf8) { | |
1162 | if (s >= strend) break; | |
9df874cd | 1163 | bits = utf8_to_byte(aTHX_ &s, strend, datumtype); |
08ca2aa3 TH |
1164 | } else bits = *(U8 *) s++; |
1165 | *str++ = bits & 1 ? '1' : '0'; | |
a6ec74c1 | 1166 | } |
08ca2aa3 | 1167 | } else { |
f337b084 | 1168 | U8 bits = 0; |
e1b825c1 | 1169 | const SSize_t ai32 = len; |
08ca2aa3 TH |
1170 | for (len = 0; len < ai32; len++) { |
1171 | if (len & 7) bits <<= 1; | |
1172 | else if (utf8) { | |
1173 | if (s >= strend) break; | |
9df874cd | 1174 | bits = utf8_to_byte(aTHX_ &s, strend, datumtype); |
08ca2aa3 TH |
1175 | } else bits = *(U8 *) s++; |
1176 | *str++ = bits & 0x80 ? '1' : '0'; | |
a6ec74c1 JH |
1177 | } |
1178 | } | |
1179 | *str = '\0'; | |
aa07b2f6 | 1180 | SvCUR_set(sv, str - SvPVX_const(sv)); |
08ca2aa3 | 1181 | XPUSHs(sv); |
a6ec74c1 | 1182 | break; |
08ca2aa3 | 1183 | } |
a6ec74c1 | 1184 | case 'H': |
08ca2aa3 | 1185 | case 'h': { |
3297d27d | 1186 | char *str = NULL; |
fc241834 | 1187 | /* Preliminary length estimate, acceptable for utf8 too */ |
49704364 | 1188 | if (howlen == e_star || len > (strend - s) * 2) |
a6ec74c1 | 1189 | len = (strend - s) * 2; |
858fe5e1 TC |
1190 | if (!checksum) { |
1191 | sv = sv_2mortal(newSV(len ? len : 1)); | |
1192 | SvPOK_on(sv); | |
1193 | str = SvPVX(sv); | |
1194 | } | |
a6ec74c1 | 1195 | if (datumtype == 'h') { |
f337b084 | 1196 | U8 bits = 0; |
e1b825c1 | 1197 | SSize_t ai32 = len; |
fc241834 RGS |
1198 | for (len = 0; len < ai32; len++) { |
1199 | if (len & 1) bits >>= 4; | |
1200 | else if (utf8) { | |
1201 | if (s >= strend) break; | |
9df874cd | 1202 | bits = utf8_to_byte(aTHX_ &s, strend, datumtype); |
fc241834 | 1203 | } else bits = * (U8 *) s++; |
858fe5e1 TC |
1204 | if (!checksum) |
1205 | *str++ = PL_hexdigit[bits & 15]; | |
a6ec74c1 | 1206 | } |
08ca2aa3 | 1207 | } else { |
f337b084 | 1208 | U8 bits = 0; |
e1b825c1 | 1209 | const SSize_t ai32 = len; |
08ca2aa3 TH |
1210 | for (len = 0; len < ai32; len++) { |
1211 | if (len & 1) bits <<= 4; | |
1212 | else if (utf8) { | |
1213 | if (s >= strend) break; | |
9df874cd | 1214 | bits = utf8_to_byte(aTHX_ &s, strend, datumtype); |
08ca2aa3 | 1215 | } else bits = *(U8 *) s++; |
858fe5e1 TC |
1216 | if (!checksum) |
1217 | *str++ = PL_hexdigit[(bits >> 4) & 15]; | |
a6ec74c1 JH |
1218 | } |
1219 | } | |
858fe5e1 TC |
1220 | if (!checksum) { |
1221 | *str = '\0'; | |
1222 | SvCUR_set(sv, str - SvPVX_const(sv)); | |
1223 | XPUSHs(sv); | |
1224 | } | |
a6ec74c1 | 1225 | break; |
08ca2aa3 | 1226 | } |
1651fc44 ML |
1227 | case 'C': |
1228 | if (len == 0) { | |
1229 | if (explicit_length) | |
1230 | /* Switch to "character" mode */ | |
1231 | utf8 = (symptr->flags & FLAG_DO_UTF8) ? 1 : 0; | |
1232 | break; | |
1233 | } | |
924ba076 | 1234 | /* FALLTHROUGH */ |
a6ec74c1 | 1235 | case 'c': |
1651fc44 ML |
1236 | while (len-- > 0 && s < strend) { |
1237 | int aint; | |
1238 | if (utf8) | |
1239 | { | |
1240 | STRLEN retlen; | |
1241 | aint = utf8n_to_uvchr((U8 *) s, strend-s, &retlen, | |
1242 | ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY); | |
df337714 | 1243 | if (retlen == (STRLEN) -1) |
1651fc44 ML |
1244 | Perl_croak(aTHX_ "Malformed UTF-8 string in unpack"); |
1245 | s += retlen; | |
1246 | } | |
1247 | else | |
1248 | aint = *(U8 *)(s)++; | |
1249 | if (aint >= 128 && datumtype != 'C') /* fake up signed chars */ | |
73cb7263 | 1250 | aint -= 256; |
08ca2aa3 | 1251 | if (!checksum) |
6e449a3a | 1252 | mPUSHi(aint); |
73cb7263 NC |
1253 | else if (checksum > bits_in_uv) |
1254 | cdouble += (NV)aint; | |
1255 | else | |
1256 | cuv += aint; | |
a6ec74c1 JH |
1257 | } |
1258 | break; | |
08ca2aa3 TH |
1259 | case 'W': |
1260 | W_checksum: | |
1651fc44 | 1261 | if (utf8) { |
08ca2aa3 | 1262 | while (len-- > 0 && s < strend) { |
08ca2aa3 | 1263 | STRLEN retlen; |
f7fe979e | 1264 | const UV val = utf8n_to_uvchr((U8 *) s, strend-s, &retlen, |
f337b084 | 1265 | ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY); |
df337714 | 1266 | if (retlen == (STRLEN) -1) |
08ca2aa3 TH |
1267 | Perl_croak(aTHX_ "Malformed UTF-8 string in unpack"); |
1268 | s += retlen; | |
1269 | if (!checksum) | |
6e449a3a | 1270 | mPUSHu(val); |
08ca2aa3 TH |
1271 | else if (checksum > bits_in_uv) |
1272 | cdouble += (NV) val; | |
d6d3e8bd | 1273 | else |
08ca2aa3 | 1274 | cuv += val; |
fc241834 | 1275 | } |
08ca2aa3 | 1276 | } else if (!checksum) |
a6ec74c1 | 1277 | while (len-- > 0) { |
f7fe979e | 1278 | const U8 ch = *(U8 *) s++; |
6e449a3a | 1279 | mPUSHu(ch); |
a6ec74c1 | 1280 | } |
08ca2aa3 TH |
1281 | else if (checksum > bits_in_uv) |
1282 | while (len-- > 0) cdouble += (NV) *(U8 *) s++; | |
1283 | else | |
1284 | while (len-- > 0) cuv += *(U8 *) s++; | |
a6ec74c1 JH |
1285 | break; |
1286 | case 'U': | |
35bcd338 | 1287 | if (len == 0) { |
c5333953 | 1288 | if (explicit_length && howlen != e_star) { |
08ca2aa3 | 1289 | /* Switch to "bytes in UTF-8" mode */ |
f337b084 | 1290 | if (symptr->flags & FLAG_DO_UTF8) utf8 = 0; |
08ca2aa3 TH |
1291 | else |
1292 | /* Should be impossible due to the need_utf8() test */ | |
1293 | Perl_croak(aTHX_ "U0 mode on a byte string"); | |
1294 | } | |
35bcd338 JH |
1295 | break; |
1296 | } | |
08ca2aa3 | 1297 | if (len > strend - s) len = strend - s; |
fc241834 | 1298 | if (!checksum) { |
08ca2aa3 TH |
1299 | if (len && unpack_only_one) len = 1; |
1300 | EXTEND(SP, len); | |
1301 | EXTEND_MORTAL(len); | |
fc241834 | 1302 | } |
08ca2aa3 TH |
1303 | while (len-- > 0 && s < strend) { |
1304 | STRLEN retlen; | |
1305 | UV auv; | |
1306 | if (utf8) { | |
81b3f640 | 1307 | U8 result[UTF8_MAXLEN+1]; |
f7fe979e | 1308 | const char *ptr = s; |
08ca2aa3 | 1309 | STRLEN len; |
08ca2aa3 TH |
1310 | /* Bug: warns about bad utf8 even if we are short on bytes |
1311 | and will break out of the loop */ | |
9df874cd | 1312 | if (!S_utf8_to_bytes(aTHX_ &ptr, strend, (char *) result, 1, |
230e1fce | 1313 | 'U')) |
08ca2aa3 TH |
1314 | break; |
1315 | len = UTF8SKIP(result); | |
9df874cd | 1316 | if (!S_utf8_to_bytes(aTHX_ &ptr, strend, |
230e1fce | 1317 | (char *) &result[1], len-1, 'U')) break; |
3ece276e KW |
1318 | auv = NATIVE_TO_UNI(utf8n_to_uvchr(result, |
1319 | len, | |
1320 | &retlen, | |
1321 | UTF8_ALLOW_DEFAULT)); | |
08ca2aa3 TH |
1322 | s = ptr; |
1323 | } else { | |
3ece276e KW |
1324 | auv = NATIVE_TO_UNI(utf8n_to_uvchr((U8*)s, |
1325 | strend - s, | |
1326 | &retlen, | |
1327 | UTF8_ALLOW_DEFAULT)); | |
df337714 | 1328 | if (retlen == (STRLEN) -1) |
08ca2aa3 TH |
1329 | Perl_croak(aTHX_ "Malformed UTF-8 string in unpack"); |
1330 | s += retlen; | |
1331 | } | |
1332 | if (!checksum) | |
6e449a3a | 1333 | mPUSHu(auv); |
73cb7263 | 1334 | else if (checksum > bits_in_uv) |
08ca2aa3 | 1335 | cdouble += (NV) auv; |
73cb7263 | 1336 | else |
08ca2aa3 | 1337 | cuv += auv; |
a6ec74c1 JH |
1338 | } |
1339 | break; | |
49704364 WL |
1340 | case 's' | TYPE_IS_SHRIEKING: |
1341 | #if SHORTSIZE != SIZE16 | |
73cb7263 | 1342 | while (len-- > 0) { |
08ca2aa3 | 1343 | short ashort; |
aaec8192 | 1344 | SHIFT_VAR(utf8, s, strend, ashort, datumtype, needs_swap); |
08ca2aa3 | 1345 | if (!checksum) |
6e449a3a | 1346 | mPUSHi(ashort); |
73cb7263 NC |
1347 | else if (checksum > bits_in_uv) |
1348 | cdouble += (NV)ashort; | |
1349 | else | |
1350 | cuv += ashort; | |
49704364 WL |
1351 | } |
1352 | break; | |
1353 | #else | |
924ba076 | 1354 | /* FALLTHROUGH */ |
a6ec74c1 | 1355 | #endif |
49704364 | 1356 | case 's': |
73cb7263 | 1357 | while (len-- > 0) { |
08ca2aa3 TH |
1358 | I16 ai16; |
1359 | ||
1360 | #if U16SIZE > SIZE16 | |
1361 | ai16 = 0; | |
1362 | #endif | |
aaec8192 | 1363 | SHIFT16(utf8, s, strend, &ai16, datumtype, needs_swap); |
1109a392 | 1364 | #if U16SIZE > SIZE16 |
73cb7263 NC |
1365 | if (ai16 > 32767) |
1366 | ai16 -= 65536; | |
a6ec74c1 | 1367 | #endif |
08ca2aa3 | 1368 | if (!checksum) |
6e449a3a | 1369 | mPUSHi(ai16); |
73cb7263 NC |
1370 | else if (checksum > bits_in_uv) |
1371 | cdouble += (NV)ai16; | |
1372 | else | |
1373 | cuv += ai16; | |
a6ec74c1 JH |
1374 | } |
1375 | break; | |
49704364 WL |
1376 | case 'S' | TYPE_IS_SHRIEKING: |
1377 | #if SHORTSIZE != SIZE16 | |
73cb7263 | 1378 | while (len-- > 0) { |
08ca2aa3 | 1379 | unsigned short aushort; |
c0f2b636 | 1380 | SHIFT_VAR(utf8, s, strend, aushort, datumtype, needs_swap); |
08ca2aa3 | 1381 | if (!checksum) |
6e449a3a | 1382 | mPUSHu(aushort); |
73cb7263 NC |
1383 | else if (checksum > bits_in_uv) |
1384 | cdouble += (NV)aushort; | |
1385 | else | |
1386 | cuv += aushort; | |
49704364 WL |
1387 | } |
1388 | break; | |
1389 | #else | |
924ba076 | 1390 | /* FALLTHROUGH */ |
49704364 | 1391 | #endif |
a6ec74c1 JH |
1392 | case 'v': |
1393 | case 'n': | |
1394 | case 'S': | |
73cb7263 | 1395 | while (len-- > 0) { |
08ca2aa3 TH |
1396 | U16 au16; |
1397 | #if U16SIZE > SIZE16 | |
1398 | au16 = 0; | |
1399 | #endif | |
aaec8192 | 1400 | SHIFT16(utf8, s, strend, &au16, datumtype, needs_swap); |
73cb7263 NC |
1401 | if (datumtype == 'n') |
1402 | au16 = PerlSock_ntohs(au16); | |
73cb7263 NC |
1403 | if (datumtype == 'v') |
1404 | au16 = vtohs(au16); | |
08ca2aa3 | 1405 | if (!checksum) |
6e449a3a | 1406 | mPUSHu(au16); |
73cb7263 | 1407 | else if (checksum > bits_in_uv) |
f337b084 | 1408 | cdouble += (NV) au16; |
73cb7263 NC |
1409 | else |
1410 | cuv += au16; | |
a6ec74c1 JH |
1411 | } |
1412 | break; | |
068bd2e7 MHM |
1413 | case 'v' | TYPE_IS_SHRIEKING: |
1414 | case 'n' | TYPE_IS_SHRIEKING: | |
73cb7263 | 1415 | while (len-- > 0) { |
08ca2aa3 TH |
1416 | I16 ai16; |
1417 | # if U16SIZE > SIZE16 | |
1418 | ai16 = 0; | |
1419 | # endif | |
aaec8192 | 1420 | SHIFT16(utf8, s, strend, &ai16, datumtype, needs_swap); |
e396d235 NC |
1421 | /* There should never be any byte-swapping here. */ |
1422 | assert(!TYPE_ENDIANNESS(datumtype)); | |
73cb7263 | 1423 | if (datumtype == ('n' | TYPE_IS_SHRIEKING)) |
08ca2aa3 | 1424 | ai16 = (I16) PerlSock_ntohs((U16) ai16); |
73cb7263 | 1425 | if (datumtype == ('v' | TYPE_IS_SHRIEKING)) |
08ca2aa3 | 1426 | ai16 = (I16) vtohs((U16) ai16); |
08ca2aa3 | 1427 | if (!checksum) |
6e449a3a | 1428 | mPUSHi(ai16); |
73cb7263 | 1429 | else if (checksum > bits_in_uv) |
08ca2aa3 | 1430 | cdouble += (NV) ai16; |
73cb7263 NC |
1431 | else |
1432 | cuv += ai16; | |
068bd2e7 MHM |
1433 | } |
1434 | break; | |
a6ec74c1 | 1435 | case 'i': |
49704364 | 1436 | case 'i' | TYPE_IS_SHRIEKING: |
73cb7263 | 1437 | while (len-- > 0) { |
08ca2aa3 | 1438 | int aint; |
aaec8192 | 1439 | SHIFT_VAR(utf8, s, strend, aint, datumtype, needs_swap); |
08ca2aa3 | 1440 | if (!checksum) |
6e449a3a | 1441 | mPUSHi(aint); |
73cb7263 NC |
1442 | else if (checksum > bits_in_uv) |
1443 | cdouble += (NV)aint; | |
1444 | else | |
1445 | cuv += aint; | |
a6ec74c1 JH |
1446 | } |
1447 | break; | |
1448 | case 'I': | |
49704364 | 1449 | case 'I' | TYPE_IS_SHRIEKING: |
73cb7263 | 1450 | while (len-- > 0) { |
08ca2aa3 | 1451 | unsigned int auint; |
aaec8192 | 1452 | SHIFT_VAR(utf8, s, strend, auint, datumtype, needs_swap); |
08ca2aa3 | 1453 | if (!checksum) |
6e449a3a | 1454 | mPUSHu(auint); |
73cb7263 NC |
1455 | else if (checksum > bits_in_uv) |
1456 | cdouble += (NV)auint; | |
1457 | else | |
1458 | cuv += auint; | |
a6ec74c1 JH |
1459 | } |
1460 | break; | |
92d41999 | 1461 | case 'j': |
73cb7263 | 1462 | while (len-- > 0) { |
08ca2aa3 | 1463 | IV aiv; |
aaec8192 | 1464 | SHIFT_VAR(utf8, s, strend, aiv, datumtype, needs_swap); |
08ca2aa3 | 1465 | if (!checksum) |
6e449a3a | 1466 | mPUSHi(aiv); |
73cb7263 NC |
1467 | else if (checksum > bits_in_uv) |
1468 | cdouble += (NV)aiv; | |
1469 | else | |
1470 | cuv += aiv; | |
92d41999 JH |
1471 | } |
1472 | break; | |
1473 | case 'J': | |
73cb7263 | 1474 | while (len-- > 0) { |
08ca2aa3 | 1475 | UV auv; |
aaec8192 | 1476 | SHIFT_VAR(utf8, s, strend, auv, datumtype, needs_swap); |
08ca2aa3 | 1477 | if (!checksum) |
6e449a3a | 1478 | mPUSHu(auv); |
73cb7263 NC |
1479 | else if (checksum > bits_in_uv) |
1480 | cdouble += (NV)auv; | |
1481 | else | |
1482 | cuv += auv; | |
92d41999 JH |
1483 | } |
1484 | break; | |
49704364 WL |
1485 | case 'l' | TYPE_IS_SHRIEKING: |
1486 | #if LONGSIZE != SIZE32 | |
73cb7263 | 1487 | while (len-- > 0) { |
08ca2aa3 | 1488 | long along; |
aaec8192 | 1489 | SHIFT_VAR(utf8, s, strend, along, datumtype, needs_swap); |
08ca2aa3 | 1490 | if (!checksum) |
6e449a3a | 1491 | mPUSHi(along); |
73cb7263 NC |
1492 | else if (checksum > bits_in_uv) |
1493 | cdouble += (NV)along; | |
1494 | else | |
1495 | cuv += along; | |
49704364 WL |
1496 | } |
1497 | break; | |
1498 | #else | |
924ba076 | 1499 | /* FALLTHROUGH */ |
a6ec74c1 | 1500 | #endif |
49704364 | 1501 | case 'l': |
73cb7263 | 1502 | while (len-- > 0) { |
08ca2aa3 TH |
1503 | I32 ai32; |
1504 | #if U32SIZE > SIZE32 | |
1505 | ai32 = 0; | |
1506 | #endif | |
aaec8192 | 1507 | SHIFT32(utf8, s, strend, &ai32, datumtype, needs_swap); |
25a9bd2a | 1508 | #if U32SIZE > SIZE32 |
08ca2aa3 | 1509 | if (ai32 > 2147483647) ai32 -= 4294967296; |
a6ec74c1 | 1510 | #endif |
08ca2aa3 | 1511 | if (!checksum) |
6e449a3a | 1512 | mPUSHi(ai32); |
73cb7263 NC |
1513 | else if (checksum > bits_in_uv) |
1514 | cdouble += (NV)ai32; | |
1515 | else | |
1516 | cuv += ai32; | |
a6ec74c1 JH |
1517 | } |
1518 | break; | |
49704364 WL |
1519 | case 'L' | TYPE_IS_SHRIEKING: |
1520 | #if LONGSIZE != SIZE32 | |
73cb7263 | 1521 | while (len-- > 0) { |
08ca2aa3 | 1522 | unsigned long aulong; |
aaec8192 | 1523 | SHIFT_VAR(utf8, s, strend, aulong, datumtype, needs_swap); |
08ca2aa3 | 1524 | if (!checksum) |
6e449a3a | 1525 | mPUSHu(aulong); |
73cb7263 NC |
1526 | else if (checksum > bits_in_uv) |
1527 | cdouble += (NV)aulong; | |
1528 | else | |
1529 | cuv += aulong; | |
49704364 WL |
1530 | } |
1531 | break; | |
1532 | #else | |
924ba076 | 1533 | /* FALLTHROUGH */ |
49704364 | 1534 | #endif |
a6ec74c1 JH |
1535 | case 'V': |
1536 | case 'N': | |
1537 | case 'L': | |
73cb7263 | 1538 | while (len-- > 0) { |
08ca2aa3 TH |
1539 | U32 au32; |
1540 | #if U32SIZE > SIZE32 | |
1541 | au32 = 0; | |
1542 | #endif | |
aaec8192 | 1543 | SHIFT32(utf8, s, strend, &au32, datumtype, needs_swap); |
73cb7263 NC |
1544 | if (datumtype == 'N') |
1545 | au32 = PerlSock_ntohl(au32); | |
73cb7263 NC |
1546 | if (datumtype == 'V') |
1547 | au32 = vtohl(au32); | |
08ca2aa3 | 1548 | if (!checksum) |
6e449a3a | 1549 | mPUSHu(au32); |
fc241834 RGS |
1550 | else if (checksum > bits_in_uv) |
1551 | cdouble += (NV)au32; | |
1552 | else | |
1553 | cuv += au32; | |
a6ec74c1 JH |
1554 | } |
1555 | break; | |
068bd2e7 MHM |
1556 | case 'V' | TYPE_IS_SHRIEKING: |
1557 | case 'N' | TYPE_IS_SHRIEKING: | |
73cb7263 | 1558 | while (len-- > 0) { |
08ca2aa3 | 1559 | I32 ai32; |
f8e5a5db | 1560 | #if U32SIZE > SIZE32 |
08ca2aa3 | 1561 | ai32 = 0; |
f8e5a5db | 1562 | #endif |
aaec8192 | 1563 | SHIFT32(utf8, s, strend, &ai32, datumtype, needs_swap); |
e396d235 NC |
1564 | /* There should never be any byte swapping here. */ |
1565 | assert(!TYPE_ENDIANNESS(datumtype)); | |
73cb7263 NC |
1566 | if (datumtype == ('N' | TYPE_IS_SHRIEKING)) |
1567 | ai32 = (I32)PerlSock_ntohl((U32)ai32); | |
73cb7263 NC |
1568 | if (datumtype == ('V' | TYPE_IS_SHRIEKING)) |
1569 | ai32 = (I32)vtohl((U32)ai32); | |
08ca2aa3 | 1570 | if (!checksum) |
6e449a3a | 1571 | mPUSHi(ai32); |
73cb7263 NC |
1572 | else if (checksum > bits_in_uv) |
1573 | cdouble += (NV)ai32; | |
1574 | else | |
1575 | cuv += ai32; | |
068bd2e7 MHM |
1576 | } |
1577 | break; | |
a6ec74c1 | 1578 | case 'p': |
a6ec74c1 | 1579 | while (len-- > 0) { |
f7fe979e | 1580 | const char *aptr; |
aaec8192 | 1581 | SHIFT_VAR(utf8, s, strend, aptr, datumtype, needs_swap); |
c4c5f44a | 1582 | /* newSVpv generates undef if aptr is NULL */ |
6e449a3a | 1583 | mPUSHs(newSVpv(aptr, 0)); |
a6ec74c1 JH |
1584 | } |
1585 | break; | |
1586 | case 'w': | |
a6ec74c1 JH |
1587 | { |
1588 | UV auv = 0; | |
e1b825c1 | 1589 | size_t bytes = 0; |
fc241834 | 1590 | |
08ca2aa3 TH |
1591 | while (len > 0 && s < strend) { |
1592 | U8 ch; | |
f337b084 | 1593 | ch = SHIFT_BYTE(utf8, s, strend, datumtype); |
08ca2aa3 | 1594 | auv = (auv << 7) | (ch & 0x7f); |
47b08251 KW |
1595 | /* UTF8_IS_XXXXX not right here because this is a BER, not |
1596 | * UTF-8 format - using constant 0x80 */ | |
08ca2aa3 | 1597 | if (ch < 0x80) { |
a6ec74c1 | 1598 | bytes = 0; |
6e449a3a | 1599 | mPUSHu(auv); |
a6ec74c1 JH |
1600 | len--; |
1601 | auv = 0; | |
08ca2aa3 | 1602 | continue; |
a6ec74c1 | 1603 | } |
08ca2aa3 | 1604 | if (++bytes >= sizeof(UV)) { /* promote to string */ |
10516c54 | 1605 | const char *t; |
a6ec74c1 | 1606 | |
147e3846 KW |
1607 | sv = Perl_newSVpvf(aTHX_ "%.*" UVuf, |
1608 | (int)TYPE_DIGITS(UV), auv); | |
a6ec74c1 | 1609 | while (s < strend) { |
f337b084 | 1610 | ch = SHIFT_BYTE(utf8, s, strend, datumtype); |
08ca2aa3 TH |
1611 | sv = mul128(sv, (U8)(ch & 0x7f)); |
1612 | if (!(ch & 0x80)) { | |
a6ec74c1 JH |
1613 | bytes = 0; |
1614 | break; | |
1615 | } | |
1616 | } | |
10516c54 | 1617 | t = SvPV_nolen_const(sv); |
a6ec74c1 JH |
1618 | while (*t == '0') |
1619 | t++; | |
1620 | sv_chop(sv, t); | |
6e449a3a | 1621 | mPUSHs(sv); |
a6ec74c1 JH |
1622 | len--; |
1623 | auv = 0; | |
1624 | } | |
1625 | } | |
1626 | if ((s >= strend) && bytes) | |
49704364 | 1627 | Perl_croak(aTHX_ "Unterminated compressed integer in unpack"); |
a6ec74c1 JH |
1628 | } |
1629 | break; | |
1630 | case 'P': | |
49704364 WL |
1631 | if (symptr->howlen == e_star) |
1632 | Perl_croak(aTHX_ "'P' must have an explicit size in unpack"); | |
a6ec74c1 | 1633 | EXTEND(SP, 1); |
2d3e0934 | 1634 | if (s + sizeof(char*) <= strend) { |
08ca2aa3 | 1635 | char *aptr; |
aaec8192 | 1636 | SHIFT_VAR(utf8, s, strend, aptr, datumtype, needs_swap); |
fc241834 | 1637 | /* newSVpvn generates undef if aptr is NULL */ |
59cd0e26 | 1638 | PUSHs(newSVpvn_flags(aptr, len, SVs_TEMP)); |
08ca2aa3 | 1639 | } |
a6ec74c1 | 1640 | break; |
c174bf3b | 1641 | #if defined(HAS_QUAD) && IVSIZE >= 8 |
a6ec74c1 | 1642 | case 'q': |
73cb7263 | 1643 | while (len-- > 0) { |
08ca2aa3 | 1644 | Quad_t aquad; |
aaec8192 | 1645 | SHIFT_VAR(utf8, s, strend, aquad, datumtype, needs_swap); |
08ca2aa3 | 1646 | if (!checksum) |
c174bf3b | 1647 | mPUSHs(newSViv((IV)aquad)); |
73cb7263 NC |
1648 | else if (checksum > bits_in_uv) |
1649 | cdouble += (NV)aquad; | |
1650 | else | |
1651 | cuv += aquad; | |
1652 | } | |
a6ec74c1 JH |
1653 | break; |
1654 | case 'Q': | |
73cb7263 | 1655 | while (len-- > 0) { |
08ca2aa3 | 1656 | Uquad_t auquad; |
aaec8192 | 1657 | SHIFT_VAR(utf8, s, strend, auquad, datumtype, needs_swap); |
08ca2aa3 | 1658 | if (!checksum) |
c174bf3b | 1659 | mPUSHs(newSVuv((UV)auquad)); |
73cb7263 NC |
1660 | else if (checksum > bits_in_uv) |
1661 | cdouble += (NV)auquad; | |
1662 | else | |
1663 | cuv += auquad; | |
a6ec74c1 JH |
1664 | } |
1665 | break; | |
1640b983 | 1666 | #endif |
a6ec74c1 JH |
1667 | /* float and double added gnb@melba.bby.oz.au 22/11/89 */ |
1668 | case 'f': | |
73cb7263 | 1669 | while (len-- > 0) { |
08ca2aa3 | 1670 | float afloat; |
aaec8192 | 1671 | SHIFT_VAR(utf8, s, strend, afloat, datumtype, needs_swap); |
08ca2aa3 | 1672 | if (!checksum) |
6e449a3a | 1673 | mPUSHn(afloat); |
08ca2aa3 | 1674 | else |
73cb7263 | 1675 | cdouble += afloat; |
fc241834 | 1676 | } |
a6ec74c1 JH |
1677 | break; |
1678 | case 'd': | |
73cb7263 | 1679 | while (len-- > 0) { |
08ca2aa3 | 1680 | double adouble; |
aaec8192 | 1681 | SHIFT_VAR(utf8, s, strend, adouble, datumtype, needs_swap); |
08ca2aa3 | 1682 | if (!checksum) |
6e449a3a | 1683 | mPUSHn(adouble); |
08ca2aa3 | 1684 | else |
73cb7263 | 1685 | cdouble += adouble; |
fc241834 | 1686 | } |
a6ec74c1 | 1687 | break; |
92d41999 | 1688 | case 'F': |
73cb7263 | 1689 | while (len-- > 0) { |
275663fa | 1690 | NV_bytes anv; |
aaec8192 NC |
1691 | SHIFT_BYTES(utf8, s, strend, anv.bytes, sizeof(anv.bytes), |
1692 | datumtype, needs_swap); | |
08ca2aa3 | 1693 | if (!checksum) |
275663fa | 1694 | mPUSHn(anv.nv); |
08ca2aa3 | 1695 | else |
275663fa | 1696 | cdouble += anv.nv; |
fc241834 | 1697 | } |
92d41999 JH |
1698 | break; |
1699 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) | |
1700 | case 'D': | |
73cb7263 | 1701 | while (len-- > 0) { |
275663fa | 1702 | ld_bytes aldouble; |
aaec8192 NC |
1703 | SHIFT_BYTES(utf8, s, strend, aldouble.bytes, |
1704 | sizeof(aldouble.bytes), datumtype, needs_swap); | |
42262fd3 JH |
1705 | /* The most common long double format, the x86 80-bit |
1706 | * extended precision, has either 2 or 6 unused bytes, | |
1707 | * which may contain garbage, which may contain | |
1708 | * unintentional data. While we do zero the bytes of | |
1709 | * the long double data in pack(), here in unpack() we | |
1710 | * don't, because it's really hard to envision that | |
1711 | * reading the long double off aldouble would be | |
e075ae47 | 1712 | * affected by the unused bytes. |
42262fd3 JH |
1713 | * |
1714 | * Note that trying to unpack 'long doubles' of 'long | |
1715 | * doubles' packed in another system is in the general | |
1716 | * case doomed without having more detail. */ | |
08ca2aa3 | 1717 | if (!checksum) |
275663fa | 1718 | mPUSHn(aldouble.ld); |
08ca2aa3 | 1719 | else |
275663fa | 1720 | cdouble += aldouble.ld; |
92d41999 JH |
1721 | } |
1722 | break; | |
1723 | #endif | |
a6ec74c1 | 1724 | case 'u': |
858fe5e1 | 1725 | if (!checksum) { |
f7fe979e | 1726 | const STRLEN l = (STRLEN) (strend - s) * 3 / 4; |
561b68a9 | 1727 | sv = sv_2mortal(newSV(l)); |
12cad9bd TC |
1728 | if (l) { |
1729 | SvPOK_on(sv); | |
1730 | *SvEND(sv) = '\0'; | |
1731 | } | |
08ca2aa3 | 1732 | } |
08ca2aa3 | 1733 | |
bee81d36 KW |
1734 | /* Note that all legal uuencoded strings are ASCII printables, so |
1735 | * have the same representation under UTF-8 vs not. This means we | |
1736 | * can ignore UTF8ness on legal input. For illegal we stop at the | |
1737 | * first failure, and don't report where/what that is, so again we | |
1738 | * can ignore UTF8ness */ | |
1739 | ||
9233b56b KW |
1740 | while (s < strend && *s != ' ' && ISUUCHAR(*s)) { |
1741 | I32 a, b, c, d; | |
1742 | char hunk[3]; | |
1743 | ||
1744 | len = PL_uudmap[*(U8*)s++] & 077; | |
1745 | while (len > 0) { | |
1746 | if (s < strend && ISUUCHAR(*s)) | |
1747 | a = PL_uudmap[*(U8*)s++] & 077; | |
1748 | else | |
1749 | a = 0; | |
1750 | if (s < strend && ISUUCHAR(*s)) | |
1751 | b = PL_uudmap[*(U8*)s++] & 077; | |
1752 | else | |
1753 | b = 0; | |
1754 | if (s < strend && ISUUCHAR(*s)) | |
1755 | c = PL_uudmap[*(U8*)s++] & 077; | |
1756 | else | |
1757 | c = 0; | |
1758 | if (s < strend && ISUUCHAR(*s)) | |
1759 | d = PL_uudmap[*(U8*)s++] & 077; | |
1760 | else | |
1761 | d = 0; | |
1762 | hunk[0] = (char)((a << 2) | (b >> 4)); | |
1763 | hunk[1] = (char)((b << 4) | (c >> 2)); | |
1764 | hunk[2] = (char)((c << 6) | d); | |
1765 | if (!checksum) | |
1766 | sv_catpvn(sv, hunk, (len > 3) ? 3 : len); | |
1767 | len -= 3; | |
1768 | } | |
1769 | if (*s == '\n') | |
1770 | s++; | |
1771 | else /* possible checksum byte */ | |
1772 | if (s + 1 < strend && s[1] == '\n') | |
1773 | s += 2; | |
1774 | } | |
858fe5e1 TC |
1775 | if (!checksum) |
1776 | XPUSHs(sv); | |
a6ec74c1 | 1777 | break; |
99f862a1 | 1778 | } /* End of switch */ |
49704364 | 1779 | |
a6ec74c1 | 1780 | if (checksum) { |
4aada8b9 | 1781 | if (memCHRs("fFdD", TYPE_NO_MODIFIERS(datumtype)) || |
92d41999 | 1782 | (checksum > bits_in_uv && |
4aada8b9 | 1783 | memCHRs("cCsSiIlLnNUWvVqQjJ", TYPE_NO_MODIFIERS(datumtype))) ) { |
08ca2aa3 | 1784 | NV trouble, anv; |
a6ec74c1 | 1785 | |
08ca2aa3 | 1786 | anv = (NV) (1 << (checksum & 15)); |
a6ec74c1 JH |
1787 | while (checksum >= 16) { |
1788 | checksum -= 16; | |
08ca2aa3 | 1789 | anv *= 65536.0; |
a6ec74c1 | 1790 | } |
a6ec74c1 | 1791 | while (cdouble < 0.0) |
08ca2aa3 | 1792 | cdouble += anv; |
09b94b1f S |
1793 | cdouble = Perl_modf(cdouble / anv, &trouble); |
1794 | #ifdef LONGDOUBLE_DOUBLEDOUBLE | |
1795 | /* Workaround for powerpc doubledouble modfl bug: | |
1796 | * close to 1.0L and -1.0L cdouble is 0, and trouble | |
1797 | * is cdouble / anv. */ | |
1798 | if (trouble != Perl_ceil(trouble)) { | |
1799 | cdouble = trouble; | |
1800 | if (cdouble > 1.0L) cdouble -= 1.0L; | |
1801 | if (cdouble < -1.0L) cdouble += 1.0L; | |
1802 | } | |
1803 | #endif | |
1804 | cdouble *= anv; | |
c4c5f44a | 1805 | sv = newSVnv(cdouble); |
a6ec74c1 JH |
1806 | } |
1807 | else { | |
fa8ec7c1 | 1808 | if (checksum < bits_in_uv) { |
d223e1ea | 1809 | UV mask = nBIT_MASK(checksum); |
92d41999 | 1810 | cuv &= mask; |
a6ec74c1 | 1811 | } |
c4c5f44a | 1812 | sv = newSVuv(cuv); |
a6ec74c1 | 1813 | } |
6e449a3a | 1814 | mXPUSHs(sv); |
a6ec74c1 JH |
1815 | checksum = 0; |
1816 | } | |
fc241834 | 1817 | |
49704364 WL |
1818 | if (symptr->flags & FLAG_SLASH){ |
1819 | if (SP - PL_stack_base - start_sp_offset <= 0) | |
21361d07 | 1820 | break; |
49704364 WL |
1821 | if( next_symbol(symptr) ){ |
1822 | if( symptr->howlen == e_number ) | |
1823 | Perl_croak(aTHX_ "Count after length/code in unpack" ); | |
1824 | if( beyond ){ | |
1825 | /* ...end of char buffer then no decent length available */ | |
1826 | Perl_croak(aTHX_ "length/code after end of string in unpack" ); | |
1827 | } else { | |
1828 | /* take top of stack (hope it's numeric) */ | |
1829 | len = POPi; | |
1830 | if( len < 0 ) | |
1831 | Perl_croak(aTHX_ "Negative '/' count in unpack" ); | |
1832 | } | |
1833 | } else { | |
1834 | Perl_croak(aTHX_ "Code missing after '/' in unpack" ); | |
1835 | } | |
1836 | datumtype = symptr->code; | |
21c16052 | 1837 | explicit_length = FALSE; |
49704364 WL |
1838 | goto redo_switch; |
1839 | } | |
a6ec74c1 | 1840 | } |
49704364 | 1841 | |
18529408 IZ |
1842 | if (new_s) |
1843 | *new_s = s; | |
1844 | PUTBACK; | |
1845 | return SP - PL_stack_base - start_sp_offset; | |
1846 | } | |
1847 | ||
1848 | PP(pp_unpack) | |
1849 | { | |
1850 | dSP; | |
bab9c0ac | 1851 | dPOPPOPssrl; |
1c23e2bd | 1852 | U8 gimme = GIMME_V; |
18529408 IZ |
1853 | STRLEN llen; |
1854 | STRLEN rlen; | |
5c144d81 NC |
1855 | const char *pat = SvPV_const(left, llen); |
1856 | const char *s = SvPV_const(right, rlen); | |
f7fe979e AL |
1857 | const char *strend = s + rlen; |
1858 | const char *patend = pat + llen; | |
e1b825c1 | 1859 | SSize_t cnt; |
18529408 IZ |
1860 | |
1861 | PUTBACK; | |
7accc089 | 1862 | cnt = unpackstring(pat, patend, s, strend, |
49704364 | 1863 | ((gimme == G_SCALAR) ? FLAG_UNPACK_ONLY_ONE : 0) |
f337b084 | 1864 | | (DO_UTF8(right) ? FLAG_DO_UTF8 : 0)); |
49704364 | 1865 | |
18529408 IZ |
1866 | SPAGAIN; |
1867 | if ( !cnt && gimme == G_SCALAR ) | |
1868 | PUSHs(&PL_sv_undef); | |
a6ec74c1 JH |
1869 | RETURN; |
1870 | } | |
1871 | ||
f337b084 | 1872 | STATIC U8 * |
e1b825c1 | 1873 | doencodes(U8 *h, const U8 *s, SSize_t len) |
a6ec74c1 | 1874 | { |
f337b084 | 1875 | *h++ = PL_uuemap[len]; |
a6ec74c1 | 1876 | while (len > 2) { |
f337b084 TH |
1877 | *h++ = PL_uuemap[(077 & (s[0] >> 2))]; |
1878 | *h++ = PL_uuemap[(077 & (((s[0] << 4) & 060) | ((s[1] >> 4) & 017)))]; | |
1879 | *h++ = PL_uuemap[(077 & (((s[1] << 2) & 074) | ((s[2] >> 6) & 03)))]; | |
1880 | *h++ = PL_uuemap[(077 & (s[2] & 077))]; | |
a6ec74c1 JH |
1881 | s += 3; |
1882 | len -= 3; | |
1883 | } | |
1884 | if (len > 0) { | |
e68aed92 | 1885 | const U8 r = (len > 1 ? s[1] : '\0'); |
f337b084 TH |
1886 | *h++ = PL_uuemap[(077 & (s[0] >> 2))]; |
1887 | *h++ = PL_uuemap[(077 & (((s[0] << 4) & 060) | ((r >> 4) & 017)))]; | |
1888 | *h++ = PL_uuemap[(077 & ((r << 2) & 074))]; | |
1889 | *h++ = PL_uuemap[0]; | |
a6ec74c1 | 1890 | } |
f337b084 TH |
1891 | *h++ = '\n'; |
1892 | return h; | |
a6ec74c1 JH |
1893 | } |
1894 | ||
1895 | STATIC SV * | |
f7fe979e | 1896 | S_is_an_int(pTHX_ const char *s, STRLEN l) |
a6ec74c1 | 1897 | { |
8b6e33c7 AL |
1898 | SV *result = newSVpvn(s, l); |
1899 | char *const result_c = SvPV_nolen(result); /* convenience */ | |
1900 | char *out = result_c; | |
1901 | bool skip = 1; | |
1902 | bool ignore = 0; | |
a6ec74c1 | 1903 | |
7918f24d NC |
1904 | PERL_ARGS_ASSERT_IS_AN_INT; |
1905 | ||
a6ec74c1 JH |
1906 | while (*s) { |
1907 | switch (*s) { | |
1908 | case ' ': | |
1909 | break; | |
1910 | case '+': | |
1911 | if (!skip) { | |
1912 | SvREFCNT_dec(result); | |
1913 | return (NULL); | |
1914 | } | |
1915 | break; | |
1916 | case '0': | |
1917 | case '1': | |
1918 | case '2': | |
1919 | case '3': | |
1920 | case '4': | |
1921 | case '5': | |
1922 | case '6': | |
1923 | case '7': | |
1924 | case '8': | |
1925 | case '9': | |
1926 | skip = 0; | |
1927 | if (!ignore) { | |
1928 | *(out++) = *s; | |
1929 | } | |
1930 | break; | |
1931 | case '.': | |
1932 | ignore = 1; | |
1933 | break; | |
1934 | default: | |
1935 | SvREFCNT_dec(result); | |
1936 | return (NULL); | |
1937 | } | |
1938 | s++; | |
1939 | } | |
1940 | *(out++) = '\0'; | |
1941 | SvCUR_set(result, out - result_c); | |
1942 | return (result); | |
1943 | } | |
1944 | ||
1945 | /* pnum must be '\0' terminated */ | |
1946 | STATIC int | |
1947 | S_div128(pTHX_ SV *pnum, bool *done) | |
1948 | { | |
8b6e33c7 AL |
1949 | STRLEN len; |
1950 | char * const s = SvPV(pnum, len); | |
1951 | char *t = s; | |
1952 | int m = 0; | |
1953 | ||
7918f24d NC |
1954 | PERL_ARGS_ASSERT_DIV128; |
1955 | ||
8b6e33c7 AL |
1956 | *done = 1; |
1957 | while (*t) { | |
1958 | const int i = m * 10 + (*t - '0'); | |
1959 | const int r = (i >> 7); /* r < 10 */ | |
1960 | m = i & 0x7F; | |
1961 | if (r) { | |
1962 | *done = 0; | |
1963 | } | |
1964 | *(t++) = '0' + r; | |
a6ec74c1 | 1965 | } |
8b6e33c7 AL |
1966 | *(t++) = '\0'; |
1967 | SvCUR_set(pnum, (STRLEN) (t - s)); | |
1968 | return (m); | |
a6ec74c1 JH |
1969 | } |
1970 | ||
18529408 | 1971 | /* |
7accc089 JH |
1972 | =for apidoc packlist |
1973 | ||
796b6530 | 1974 | The engine implementing C<pack()> Perl function. |
7accc089 | 1975 | |
bfce84ec AL |
1976 | =cut |
1977 | */ | |
7accc089 JH |
1978 | |
1979 | void | |
5aaab254 | 1980 | Perl_packlist(pTHX_ SV *cat, const char *pat, const char *patend, SV **beglist, SV **endlist ) |
7accc089 | 1981 | { |
aadb217d JH |
1982 | tempsym_t sym; |
1983 | ||
7918f24d NC |
1984 | PERL_ARGS_ASSERT_PACKLIST; |
1985 | ||
f7fe979e | 1986 | TEMPSYM_INIT(&sym, pat, patend, FLAG_PACK); |
49704364 | 1987 | |
f337b084 TH |
1988 | /* We're going to do changes through SvPVX(cat). Make sure it's valid. |
1989 | Also make sure any UTF8 flag is loaded */ | |
56eb0262 | 1990 | SvPV_force_nolen(cat); |
bfce84ec AL |
1991 | if (DO_UTF8(cat)) |
1992 | sym.flags |= FLAG_PARSE_UTF8 | FLAG_DO_UTF8; | |
f337b084 | 1993 | |
49704364 WL |
1994 | (void)pack_rec( cat, &sym, beglist, endlist ); |
1995 | } | |
1996 | ||
f337b084 TH |
1997 | /* like sv_utf8_upgrade, but also repoint the group start markers */ |
1998 | STATIC void | |
1999 | marked_upgrade(pTHX_ SV *sv, tempsym_t *sym_ptr) { | |
2000 | STRLEN len; | |
2001 | tempsym_t *group; | |
f7fe979e AL |
2002 | const char *from_ptr, *from_start, *from_end, **marks, **m; |
2003 | char *to_start, *to_ptr; | |
f337b084 TH |
2004 | |
2005 | if (SvUTF8(sv)) return; | |
2006 | ||
aa07b2f6 | 2007 | from_start = SvPVX_const(sv); |
f337b084 TH |
2008 | from_end = from_start + SvCUR(sv); |
2009 | for (from_ptr = from_start; from_ptr < from_end; from_ptr++) | |
6f2d5cbc | 2010 | if (!NATIVE_BYTE_IS_INVARIANT(*from_ptr)) break; |
f337b084 TH |
2011 | if (from_ptr == from_end) { |
2012 | /* Simple case: no character needs to be changed */ | |
2013 | SvUTF8_on(sv); | |
2014 | return; | |
2015 | } | |
2016 | ||
3473cf63 | 2017 | len = (from_end-from_ptr)*UTF8_EXPAND+(from_ptr-from_start)+1; |
a02a5408 | 2018 | Newx(to_start, len, char); |
f337b084 TH |
2019 | Copy(from_start, to_start, from_ptr-from_start, char); |
2020 | to_ptr = to_start + (from_ptr-from_start); | |
2021 | ||
a02a5408 | 2022 | Newx(marks, sym_ptr->level+2, const char *); |
f337b084 TH |
2023 | for (group=sym_ptr; group; group = group->previous) |
2024 | marks[group->level] = from_start + group->strbeg; | |
2025 | marks[sym_ptr->level+1] = from_end+1; | |
2026 | for (m = marks; *m < from_ptr; m++) | |
2027 | *m = to_start + (*m-from_start); | |
2028 | ||
2029 | for (;from_ptr < from_end; from_ptr++) { | |
2030 | while (*m == from_ptr) *m++ = to_ptr; | |
230e1fce | 2031 | to_ptr = (char *) uvchr_to_utf8((U8 *) to_ptr, *(U8 *) from_ptr); |
f337b084 TH |
2032 | } |
2033 | *to_ptr = 0; | |
2034 | ||
2035 | while (*m == from_ptr) *m++ = to_ptr; | |
2036 | if (m != marks + sym_ptr->level+1) { | |
2037 | Safefree(marks); | |
2038 | Safefree(to_start); | |
5637ef5b NC |
2039 | Perl_croak(aTHX_ "panic: marks beyond string end, m=%p, marks=%p, " |
2040 | "level=%d", m, marks, sym_ptr->level); | |
f337b084 TH |
2041 | } |
2042 | for (group=sym_ptr; group; group = group->previous) | |
2043 | group->strbeg = marks[group->level] - to_start; | |
2044 | Safefree(marks); | |
2045 | ||
2046 | if (SvOOK(sv)) { | |
2047 | if (SvIVX(sv)) { | |
b162af07 | 2048 | SvLEN_set(sv, SvLEN(sv) + SvIVX(sv)); |
f337b084 TH |
2049 | from_start -= SvIVX(sv); |
2050 | SvIV_set(sv, 0); | |
2051 | } | |
2052 | SvFLAGS(sv) &= ~SVf_OOK; | |
2053 | } | |
2054 | if (SvLEN(sv) != 0) | |
2055 | Safefree(from_start); | |
f880fe2f | 2056 | SvPV_set(sv, to_start); |
b162af07 SP |
2057 | SvCUR_set(sv, to_ptr - to_start); |
2058 | SvLEN_set(sv, len); | |
f337b084 TH |
2059 | SvUTF8_on(sv); |
2060 | } | |
2061 | ||
2062 | /* Exponential string grower. Makes string extension effectively O(n) | |
2063 | needed says how many extra bytes we need (not counting the final '\0') | |
2064 | Only grows the string if there is an actual lack of space | |
2065 | */ | |
2066 | STATIC char * | |
0bd48802 | 2067 | S_sv_exp_grow(pTHX_ SV *sv, STRLEN needed) { |
f7fe979e AL |
2068 | const STRLEN cur = SvCUR(sv); |
2069 | const STRLEN len = SvLEN(sv); | |
f337b084 | 2070 | STRLEN extend; |
7918f24d NC |
2071 | |
2072 | PERL_ARGS_ASSERT_SV_EXP_GROW; | |
2073 | ||
f337b084 TH |
2074 | if (len - cur > needed) return SvPVX(sv); |
2075 | extend = needed > len ? needed : len; | |
2076 | return SvGROW(sv, len+extend+1); | |
2077 | } | |
49704364 | 2078 | |
93f6e112 | 2079 | static SV * |
b197e565 | 2080 | S_sv_check_infnan(pTHX_ SV *sv, I32 datumtype) |
354b74ae FC |
2081 | { |
2082 | SvGETMAGIC(sv); | |
93f6e112 FC |
2083 | if (UNLIKELY(SvAMAGIC(sv))) |
2084 | sv = sv_2num(sv); | |
99f450cc | 2085 | if (UNLIKELY(isinfnansv(sv))) { |
354b74ae FC |
2086 | const I32 c = TYPE_NO_MODIFIERS(datumtype); |
2087 | const NV nv = SvNV_nomg(sv); | |
2088 | if (c == 'w') | |
147e3846 | 2089 | Perl_croak(aTHX_ "Cannot compress %" NVgf " in pack", nv); |
354b74ae | 2090 | else |
147e3846 | 2091 | Perl_croak(aTHX_ "Cannot pack %" NVgf " with '%c'", nv, (int) c); |
354b74ae | 2092 | } |
93f6e112 | 2093 | return sv; |
354b74ae FC |
2094 | } |
2095 | ||
93f6e112 FC |
2096 | #define SvIV_no_inf(sv,d) \ |
2097 | ((sv) = S_sv_check_infnan(aTHX_ sv,d), SvIV_nomg(sv)) | |
2098 | #define SvUV_no_inf(sv,d) \ | |
2099 | ((sv) = S_sv_check_infnan(aTHX_ sv,d), SvUV_nomg(sv)) | |
354b74ae | 2100 | |
49704364 WL |
2101 | STATIC |
2102 | SV ** | |
f337b084 | 2103 | S_pack_rec(pTHX_ SV *cat, tempsym_t* symptr, SV **beglist, SV **endlist ) |
49704364 | 2104 | { |
49704364 | 2105 | tempsym_t lookahead; |
e1b825c1 | 2106 | SSize_t items = endlist - beglist; |
f337b084 TH |
2107 | bool found = next_symbol(symptr); |
2108 | bool utf8 = (symptr->flags & FLAG_PARSE_UTF8) ? 1 : 0; | |
041457d9 | 2109 | bool warn_utf8 = ckWARN(WARN_UTF8); |
81d52ecd | 2110 | char* from; |
f337b084 | 2111 | |
7918f24d NC |
2112 | PERL_ARGS_ASSERT_PACK_REC; |
2113 | ||
f337b084 TH |
2114 | if (symptr->level == 0 && found && symptr->code == 'U') { |
2115 | marked_upgrade(aTHX_ cat, symptr); | |
2116 | symptr->flags |= FLAG_DO_UTF8; | |
2117 | utf8 = 0; | |
49704364 | 2118 | } |
f337b084 | 2119 | symptr->strbeg = SvCUR(cat); |
49704364 WL |
2120 | |
2121 | while (found) { | |
f337b084 TH |
2122 | SV *fromstr; |
2123 | STRLEN fromlen; | |
e1b825c1 | 2124 | SSize_t len; |
a0714e2c | 2125 | SV *lengthcode = NULL; |
49704364 | 2126 | I32 datumtype = symptr->code; |
f337b084 TH |
2127 | howlen_t howlen = symptr->howlen; |
2128 | char *start = SvPVX(cat); | |
2129 | char *cur = start + SvCUR(cat); | |
a1219b5e | 2130 | bool needs_swap; |
49704364 | 2131 | |
fc1bb3f2 | 2132 | #define NEXTFROM (lengthcode ? lengthcode : items > 0 ? (--items, *beglist++) : &PL_sv_no) |
0c7df902 | 2133 | #define PEEKFROM (lengthcode ? lengthcode : items > 0 ? *beglist : &PL_sv_no) |
f337b084 TH |
2134 | |
2135 | switch (howlen) { | |
fc241834 | 2136 | case e_star: |
4aada8b9 | 2137 | len = memCHRs("@Xxu", TYPE_NO_MODIFIERS(datumtype)) ? |
f337b084 TH |
2138 | 0 : items; |
2139 | break; | |
2140 | default: | |
2141 | /* e_no_len and e_number */ | |
2142 | len = symptr->length; | |
49704364 WL |
2143 | break; |
2144 | } | |
2145 | ||
f337b084 | 2146 | if (len) { |
a7a3cfaa | 2147 | packprops_t props = packprops[TYPE_NO_ENDIANNESS(datumtype)]; |
f337b084 | 2148 | |
a7a3cfaa TH |
2149 | if (props && !(props & PACK_SIZE_UNPREDICTABLE)) { |
2150 | /* We can process this letter. */ | |
2151 | STRLEN size = props & PACK_SIZE_MASK; | |
f17fed50 | 2152 | GROWING2(utf8, cat, start, cur, size, (STRLEN)len); |
a7a3cfaa | 2153 | } |
f337b084 TH |
2154 | } |
2155 | ||
49704364 WL |
2156 | /* Look ahead for next symbol. Do we have code/code? */ |
2157 | lookahead = *symptr; | |
2158 | found = next_symbol(&lookahead); | |
246f24af TH |
2159 | if (symptr->flags & FLAG_SLASH) { |
2160 | IV count; | |
f337b084 | 2161 | if (!found) Perl_croak(aTHX_ "Code missing after '/' in pack"); |
4aada8b9 | 2162 | if (memCHRs("aAZ", lookahead.code)) { |
246f24af TH |
2163 | if (lookahead.howlen == e_number) count = lookahead.length; |
2164 | else { | |
ce399ba6 | 2165 | if (items > 0) { |
48a5da33 | 2166 | count = sv_len_utf8(*beglist); |
ce399ba6 | 2167 | } |
246f24af TH |
2168 | else count = 0; |
2169 | if (lookahead.code == 'Z') count++; | |
2170 | } | |
2171 | } else { | |
2172 | if (lookahead.howlen == e_number && lookahead.length < items) | |
2173 | count = lookahead.length; | |
2174 | else count = items; | |
2175 | } | |
2176 | lookahead.howlen = e_number; | |
2177 | lookahead.length = count; | |
2178 | lengthcode = sv_2mortal(newSViv(count)); | |
a6ec74c1 | 2179 | } |
49704364 | 2180 | |
a1219b5e NC |
2181 | needs_swap = NEEDS_SWAP(datumtype); |
2182 | ||
fc241834 RGS |
2183 | /* Code inside the switch must take care to properly update |
2184 | cat (CUR length and '\0' termination) if it updated *cur and | |
f337b084 | 2185 | doesn't simply leave using break */ |
0c7df902 | 2186 | switch (TYPE_NO_ENDIANNESS(datumtype)) { |
a6ec74c1 | 2187 | default: |
f337b084 TH |
2188 | Perl_croak(aTHX_ "Invalid type '%c' in pack", |
2189 | (int) TYPE_NO_MODIFIERS(datumtype)); | |
a6ec74c1 | 2190 | case '%': |
49704364 | 2191 | Perl_croak(aTHX_ "'%%' may not be used in pack"); |
81d52ecd | 2192 | |
28be1210 | 2193 | case '.' | TYPE_IS_SHRIEKING: |
28be1210 TH |
2194 | case '.': |
2195 | if (howlen == e_star) from = start; | |
2196 | else if (len == 0) from = cur; | |
2197 | else { | |
2198 | tempsym_t *group = symptr; | |
2199 | ||
2200 | while (--len && group) group = group->previous; | |
2201 | from = group ? start + group->strbeg : start; | |
2202 | } | |
2203 | fromstr = NEXTFROM; | |
354b74ae | 2204 | len = SvIV_no_inf(fromstr, datumtype); |
28be1210 | 2205 | goto resize; |
28be1210 | 2206 | case '@' | TYPE_IS_SHRIEKING: |
a6ec74c1 | 2207 | case '@': |
28be1210 TH |
2208 | from = start + symptr->strbeg; |
2209 | resize: | |
28be1210 | 2210 | if (utf8 && !(datumtype & TYPE_IS_SHRIEKING)) |
28be1210 TH |
2211 | if (len >= 0) { |
2212 | while (len && from < cur) { | |
2213 | from += UTF8SKIP(from); | |
2214 | len--; | |
2215 | } | |
2216 | if (from > cur) | |
2217 | Perl_croak(aTHX_ "Malformed UTF-8 string in pack"); | |
2218 | if (len) { | |
2219 | /* Here we know from == cur */ | |
2220 | grow: | |
2221 | GROWING(0, cat, start, cur, len); | |
2222 | Zero(cur, len, char); | |
2223 | cur += len; | |
2224 | } else if (from < cur) { | |
2225 | len = cur - from; | |
2226 | goto shrink; | |
2227 | } else goto no_change; | |
2228 | } else { | |
2229 | cur = from; | |
2230 | len = -len; | |
2231 | goto utf8_shrink; | |
f337b084 | 2232 | } |
28be1210 TH |
2233 | else { |
2234 | len -= cur - from; | |
f337b084 | 2235 | if (len > 0) goto grow; |
28be1210 | 2236 | if (len == 0) goto no_change; |
fc241834 | 2237 | len = -len; |
28be1210 | 2238 | goto shrink; |
f337b084 | 2239 | } |
a6ec74c1 | 2240 | break; |
81d52ecd | 2241 | |
fc241834 | 2242 | case '(': { |
49704364 | 2243 | tempsym_t savsym = *symptr; |
66c611c5 MHM |
2244 | U32 group_modifiers = TYPE_MODIFIERS(datumtype & ~symptr->flags); |
2245 | symptr->flags |= group_modifiers; | |
49704364 WL |
2246 | symptr->patend = savsym.grpend; |
2247 | symptr->level++; | |
f337b084 | 2248 | symptr->previous = &lookahead; |
18529408 | 2249 | while (len--) { |
f337b084 TH |
2250 | U32 was_utf8; |
2251 | if (utf8) symptr->flags |= FLAG_PARSE_UTF8; | |
2252 | else symptr->flags &= ~FLAG_PARSE_UTF8; | |
2253 | was_utf8 = SvUTF8(cat); | |
49704364 | 2254 | symptr->patptr = savsym.grpbeg; |
f337b084 TH |
2255 | beglist = pack_rec(cat, symptr, beglist, endlist); |
2256 | if (SvUTF8(cat) != was_utf8) | |
2257 | /* This had better be an upgrade while in utf8==0 mode */ | |
2258 | utf8 = 1; | |
2259 | ||
49704364 | 2260 | if (savsym.howlen == e_star && beglist == endlist) |
18529408 IZ |
2261 | break; /* No way to continue */ |
2262 | } | |
ee790063 | 2263 | items = endlist - beglist; |
f337b084 TH |
2264 | lookahead.flags = symptr->flags & ~group_modifiers; |
2265 | goto no_change; | |
18529408 | 2266 | } |
62f95557 IZ |
2267 | case 'X' | TYPE_IS_SHRIEKING: |
2268 | if (!len) /* Avoid division by 0 */ | |
2269 | len = 1; | |
f337b084 TH |
2270 | if (utf8) { |
2271 | char *hop, *last; | |
e1b825c1 | 2272 | SSize_t l = len; |
f337b084 TH |
2273 | hop = last = start; |
2274 | while (hop < cur) { | |
2275 | hop += UTF8SKIP(hop); | |
2276 | if (--l == 0) { | |
2277 | last = hop; | |
2278 | l = len; | |
2279 | } | |
2280 | } | |
2281 | if (last > cur) | |
2282 | Perl_croak(aTHX_ "Malformed UTF-8 string in pack"); | |
2283 | cur = last; | |
2284 | break; | |
2285 | } | |
2286 | len = (cur-start) % len; | |
924ba076 | 2287 | /* FALLTHROUGH */ |
a6ec74c1 | 2288 | case 'X': |
f337b084 TH |
2289 | if (utf8) { |
2290 | if (len < 1) goto no_change; | |
28be1210 | 2291 | utf8_shrink: |
f337b084 TH |
2292 | while (len > 0) { |
2293 | if (cur <= start) | |
28be1210 TH |
2294 | Perl_croak(aTHX_ "'%c' outside of string in pack", |
2295 | (int) TYPE_NO_MODIFIERS(datumtype)); | |
f337b084 TH |
2296 | while (--cur, UTF8_IS_CONTINUATION(*cur)) { |
2297 | if (cur <= start) | |
28be1210 TH |
2298 | Perl_croak(aTHX_ "'%c' outside of string in pack", |
2299 | (int) TYPE_NO_MODIFIERS(datumtype)); | |
f337b084 TH |
2300 | } |
2301 | len--; | |
2302 | } | |
2303 | } else { | |
fc241834 | 2304 | shrink: |
f337b084 | 2305 | if (cur - start < len) |
28be1210 TH |
2306 | Perl_croak(aTHX_ "'%c' outside of string in pack", |
2307 | (int) TYPE_NO_MODIFIERS(datumtype)); | |
f337b084 TH |
2308 | cur -= len; |
2309 | } | |
2310 | if (cur < start+symptr->strbeg) { | |
2311 | /* Make sure group starts don't point into the void */ | |
2312 | tempsym_t *group; | |
9e27e96a | 2313 | const STRLEN length = cur-start; |
f337b084 TH |
2314 | for (group = symptr; |
2315 | group && length < group->strbeg; | |
2316 | group = group->previous) group->strbeg = length; | |
2317 | lookahead.strbeg = length; | |
2318 | } | |
a6ec74c1 | 2319 | break; |
fc241834 | 2320 | case 'x' | TYPE_IS_SHRIEKING: { |
e1b825c1 | 2321 | SSize_t ai32; |
62f95557 IZ |
2322 | if (!len) /* Avoid division by 0 */ |
2323 | len = 1; | |
230e1fce | 2324 | if (utf8) ai32 = utf8_length((U8 *) start, (U8 *) cur) % len; |
fc241834 RGS |
2325 | else ai32 = (cur - start) % len; |
2326 | if (ai32 == 0) goto no_change; | |
2327 | len -= ai32; | |
2328 | } | |
924ba076 | 2329 | /* FALLTHROUGH */ |
a6ec74c1 | 2330 | case 'x': |
f337b084 | 2331 | goto grow; |
a6ec74c1 JH |
2332 | case 'A': |
2333 | case 'Z': | |
f337b084 | 2334 | case 'a': { |
f7fe979e | 2335 | const char *aptr; |
f337b084 | 2336 | |
a6ec74c1 | 2337 | fromstr = NEXTFROM; |
e62f0680 | 2338 | aptr = SvPV_const(fromstr, fromlen); |
f337b084 | 2339 | if (DO_UTF8(fromstr)) { |
f7fe979e | 2340 | const char *end, *s; |
f337b084 TH |
2341 | |
2342 | if (!utf8 && !SvUTF8(cat)) { | |
2343 | marked_upgrade(aTHX_ cat, symptr); | |
2344 | lookahead.flags |= FLAG_DO_UTF8; | |
2345 | lookahead.strbeg = symptr->strbeg; | |
2346 | utf8 = 1; | |
2347 | start = SvPVX(cat); | |
2348 | cur = start + SvCUR(cat); | |
2349 | } | |
fc241834 | 2350 | if (howlen == e_star) { |
f337b084 TH |
2351 | if (utf8) goto string_copy; |
2352 | len = fromlen+1; | |
2353 | } | |
2354 | s = aptr; | |
2355 | end = aptr + fromlen; | |
2356 | fromlen = datumtype == 'Z' ? len-1 : len; | |
e1b825c1 | 2357 | while ((SSize_t) fromlen > 0 && s < end) { |
f337b084 TH |
2358 | s += UTF8SKIP(s); |
2359 | fromlen--; | |
2360 | } | |
2361 | if (s > end) | |
2362 | Perl_croak(aTHX_ "Malformed UTF-8 string in pack"); | |
2363 | if (utf8) { | |
fc241834 | 2364 | len = fromlen; |
f337b084 TH |
2365 | if (datumtype == 'Z') len++; |
2366 | fromlen = s-aptr; | |
2367 | len += fromlen; | |
fc241834 | 2368 | |
f337b084 | 2369 | goto string_copy; |
fc241834 | 2370 | } |
f337b084 TH |
2371 | fromlen = len - fromlen; |
2372 | if (datumtype == 'Z') fromlen--; | |
2373 | if (howlen == e_star) { | |
2374 | len = fromlen; | |
2375 | if (datumtype == 'Z') len++; | |
fc241834 | 2376 | } |
f337b084 | 2377 | GROWING(0, cat, start, cur, len); |
9df874cd | 2378 | if (!S_utf8_to_bytes(aTHX_ &aptr, end, cur, fromlen, |
f337b084 | 2379 | datumtype | TYPE_IS_PACK)) |
5637ef5b | 2380 | Perl_croak(aTHX_ "panic: predicted utf8 length not available, " |
e1b825c1 Z |
2381 | "for '%c', aptr=%p end=%p cur=%p, fromlen=%zu", |
2382 | (int)datumtype, aptr, end, cur, fromlen); | |
f337b084 | 2383 | cur += fromlen; |
a6ec74c1 | 2384 | len -= fromlen; |
f337b084 TH |
2385 | } else if (utf8) { |
2386 | if (howlen == e_star) { | |
2387 | len = fromlen; | |
2388 | if (datumtype == 'Z') len++; | |
a6ec74c1 | 2389 | } |
e1b825c1 | 2390 | if (len <= (SSize_t) fromlen) { |
f337b084 TH |
2391 | fromlen = len; |
2392 | if (datumtype == 'Z' && fromlen > 0) fromlen--; | |
2393 | } | |
fc241834 | 2394 | /* assumes a byte expands to at most UTF8_EXPAND bytes on |
3473cf63 RGS |
2395 | upgrade, so: |
2396 | expected_length <= from_len*UTF8_EXPAND + (len-from_len) */ | |
2397 | GROWING(0, cat, start, cur, fromlen*(UTF8_EXPAND-1)+len); | |
f337b084 TH |
2398 | len -= fromlen; |
2399 | while (fromlen > 0) { | |
230e1fce | 2400 | cur = (char *) uvchr_to_utf8((U8 *) cur, * (U8 *) aptr); |
f337b084 TH |
2401 | aptr++; |
2402 | fromlen--; | |
fc241834 | 2403 | } |
f337b084 TH |
2404 | } else { |
2405 | string_copy: | |
2406 | if (howlen == e_star) { | |
2407 | len = fromlen; | |
2408 | if (datumtype == 'Z') len++; | |
2409 | } | |
e1b825c1 | 2410 | if (len <= (SSize_t) fromlen) { |
f337b084 TH |
2411 | fromlen = len; |
2412 | if (datumtype == 'Z' && fromlen > 0) fromlen--; | |
a6ec74c1 | 2413 | } |
f337b084 TH |
2414 | GROWING(0, cat, start, cur, len); |
2415 | Copy(aptr, cur, fromlen, char); | |
2416 | cur += fromlen; | |
2417 | len -= fromlen; | |
a6ec74c1 | 2418 | } |
f337b084 TH |
2419 | memset(cur, datumtype == 'A' ? ' ' : '\0', len); |
2420 | cur += len; | |
3c4fb04a | 2421 | SvTAINT(cat); |
a6ec74c1 | 2422 | break; |
f337b084 | 2423 | } |
a6ec74c1 | 2424 | case 'B': |
f337b084 | 2425 | case 'b': { |
b83604b4 | 2426 | const char *str, *end; |
e1b825c1 | 2427 | SSize_t l, field_len; |
f337b084 TH |
2428 | U8 bits; |
2429 | bool utf8_source; | |
2430 | U32 utf8_flags; | |
a6ec74c1 | 2431 | |
fc241834 | 2432 | fromstr = NEXTFROM; |
b83604b4 | 2433 | str = SvPV_const(fromstr, fromlen); |
f337b084 TH |
2434 | end = str + fromlen; |
2435 | if (DO_UTF8(fromstr)) { | |
2436 | utf8_source = TRUE; | |
041457d9 | 2437 | utf8_flags = warn_utf8 ? 0 : UTF8_ALLOW_ANY; |
f337b084 TH |
2438 | } else { |
2439 | utf8_source = FALSE; | |
2440 | utf8_flags = 0; /* Unused, but keep compilers happy */ | |
2441 | } | |
2442 | if (howlen == e_star) len = fromlen; | |
2443 | field_len = (len+7)/8; | |
2444 | GROWING(utf8, cat, start, cur, field_len); | |
e1b825c1 | 2445 | if (len > (SSize_t)fromlen) len = fromlen; |
f337b084 TH |
2446 | bits = 0; |
2447 | l = 0; | |
2448 | if (datumtype == 'B') | |
2449 | while (l++ < len) { | |
2450 | if (utf8_source) { | |
95b63a38 | 2451 | UV val = 0; |
f337b084 TH |
2452 | NEXT_UNI_VAL(val, cur, str, end, utf8_flags); |
2453 | bits |= val & 1; | |
2454 | } else bits |= *str++ & 1; | |
2455 | if (l & 7) bits <<= 1; | |
fc241834 | 2456 | else { |
f337b084 TH |
2457 | PUSH_BYTE(utf8, cur, bits); |
2458 | bits = 0; | |
a6ec74c1 JH |
2459 | } |
2460 | } | |
f337b084 TH |
2461 | else |
2462 | /* datumtype == 'b' */ | |
2463 | while (l++ < len) { | |
2464 | if (utf8_source) { | |
95b63a38 | 2465 | UV val = 0; |
f337b084 TH |
2466 | NEXT_UNI_VAL(val, cur, str, end, utf8_flags); |
2467 | if (val & 1) bits |= 0x80; | |
2468 | } else if (*str++ & 1) | |
2469 | bits |= 0x80; | |
2470 | if (l & 7) bits >>= 1; | |
fc241834 | 2471 | else { |
f337b084 TH |
2472 | PUSH_BYTE(utf8, cur, bits); |
2473 | bits = 0; | |
a6ec74c1 JH |
2474 | } |
2475 | } | |
f337b084 TH |
2476 | l--; |
2477 | if (l & 7) { | |
fc241834 | 2478 | if (datumtype == 'B') |
f337b084 | 2479 | bits <<= 7 - (l & 7); |
fc241834 | 2480 | else |
f337b084 TH |
2481 | bits >>= 7 - (l & 7); |
2482 | PUSH_BYTE(utf8, cur, bits); | |
2483 | l += 7; | |
a6ec74c1 | 2484 | } |
f337b084 TH |
2485 | /* Determine how many chars are left in the requested field */ |
2486 | l /= 8; | |
2487 | if (howlen == e_star) field_len = 0; | |
2488 | else field_len -= l; | |
2489 | Zero(cur, field_len, char); | |
2490 | cur += field_len; | |
a6ec74c1 | 2491 | break; |
f337b084 | 2492 | } |
a6ec74c1 | 2493 | case 'H': |
f337b084 | 2494 | case 'h': { |
10516c54 | 2495 | const char *str, *end; |
e1b825c1 | 2496 | SSize_t l, field_len; |
f337b084 TH |
2497 | U8 bits; |
2498 | bool utf8_source; | |
2499 | U32 utf8_flags; | |
a6ec74c1 | 2500 | |
fc241834 | 2501 | fromstr = NEXTFROM; |
10516c54 | 2502 | str = SvPV_const(fromstr, fromlen); |
f337b084 TH |
2503 | end = str + fromlen; |
2504 | if (DO_UTF8(fromstr)) { | |
2505 | utf8_source = TRUE; | |
041457d9 | 2506 | utf8_flags = warn_utf8 ? 0 : UTF8_ALLOW_ANY; |
f337b084 TH |
2507 | } else { |
2508 | utf8_source = FALSE; | |
2509 | utf8_flags = 0; /* Unused, but keep compilers happy */ | |
2510 | } | |
2511 | if (howlen == e_star) len = fromlen; | |
2512 | field_len = (len+1)/2; | |
2513 | GROWING(utf8, cat, start, cur, field_len); | |
e1b825c1 | 2514 | if (!utf8_source && len > (SSize_t)fromlen) len = fromlen; |
f337b084 TH |
2515 | bits = 0; |
2516 | l = 0; | |
2517 | if (datumtype == 'H') | |
2518 | while (l++ < len) { | |
2519 | if (utf8_source) { | |
95b63a38 | 2520 | UV val = 0; |
f337b084 TH |
2521 | NEXT_UNI_VAL(val, cur, str, end, utf8_flags); |
2522 | if (val < 256 && isALPHA(val)) | |
2523 | bits |= (val + 9) & 0xf; | |
a6ec74c1 | 2524 | else |
f337b084 TH |
2525 | bits |= val & 0xf; |
2526 | } else if (isALPHA(*str)) | |
2527 | bits |= (*str++ + 9) & 0xf; | |
2528 | else | |
2529 | bits |= *str++ & 0xf; | |
2530 | if (l & 1) bits <<= 4; | |
fc241834 | 2531 | else { |
f337b084 TH |
2532 | PUSH_BYTE(utf8, cur, bits); |
2533 | bits = 0; | |
a6ec74c1 JH |
2534 | } |
2535 | } | |
f337b084 TH |
2536 | else |
2537 | while (l++ < len) { | |
2538 | if (utf8_source) { | |
95b63a38 | 2539 | UV val = 0; |
f337b084 TH |
2540 | NEXT_UNI_VAL(val, cur, str, end, utf8_flags); |
2541 | if (val < 256 && isALPHA(val)) | |
2542 | bits |= ((val + 9) & 0xf) << 4; | |
a6ec74c1 | 2543 | else |
f337b084 TH |
2544 | bits |= (val & 0xf) << 4; |
2545 | } else if (isALPHA(*str)) | |
2546 | bits |= ((*str++ + 9) & 0xf) << 4; | |
2547 | else | |
2548 | bits |= (*str++ & 0xf) << 4; | |
2549 | if (l & 1) bits >>= 4; | |
fc241834 | 2550 | else { |
f337b084 TH |
2551 | PUSH_BYTE(utf8, cur, bits); |
2552 | bits = 0; | |
a6ec74c1 | 2553 | } |
fc241834 | 2554 | } |
f337b084 TH |
2555 | l--; |
2556 | if (l & 1) { | |
2557 | PUSH_BYTE(utf8, cur, bits); | |
2558 | l++; | |
2559 | } | |
2560 | /* Determine how many chars are left in the requested field */ | |
2561 | l /= 2; | |
2562 | if (howlen == e_star) field_len = 0; | |
2563 | else field_len -= l; | |
2564 | Zero(cur, field_len, char); | |
2565 | cur += field_len; | |
2566 | break; | |
fc241834 RGS |
2567 | } |
2568 | case 'c': | |
f337b084 TH |
2569 | while (len-- > 0) { |
2570 | IV aiv; | |
2571 | fromstr = NEXTFROM; | |
354b74ae | 2572 | aiv = SvIV_no_inf(fromstr, datumtype); |
a2a5de95 NC |
2573 | if ((-128 > aiv || aiv > 127)) |
2574 | Perl_ck_warner(aTHX_ packWARN(WARN_PACK), | |
2575 | "Character in 'c' format wrapped in pack"); | |
585ec06d | 2576 | PUSH_BYTE(utf8, cur, (U8)(aiv & 0xff)); |
a6ec74c1 JH |
2577 | } |
2578 | break; | |
2579 | case 'C': | |
f337b084 TH |
2580 | if (len == 0) { |
2581 | utf8 = (symptr->flags & FLAG_DO_UTF8) ? 1 : 0; | |
2582 | break; | |
2583 | } | |
a6ec74c1 | 2584 | while (len-- > 0) { |
f337b084 | 2585 | IV aiv; |
a6ec74c1 | 2586 | fromstr = NEXTFROM; |
354b74ae | 2587 | aiv = SvIV_no_inf(fromstr, datumtype); |
a2a5de95 NC |
2588 | if ((0 > aiv || aiv > 0xff)) |
2589 | Perl_ck_warner(aTHX_ packWARN(WARN_PACK), | |
2590 | "Character in 'C' format wrapped in pack"); | |
1651fc44 | 2591 | PUSH_BYTE(utf8, cur, (U8)(aiv & 0xff)); |
f337b084 | 2592 | } |
fc241834 RGS |
2593 | break; |
2594 | case 'W': { | |
2595 | char *end; | |
670f1322 | 2596 | U8 in_bytes = (U8)IN_BYTES; |
fc241834 RGS |
2597 | |
2598 | end = start+SvLEN(cat)-1; | |
2599 | if (utf8) end -= UTF8_MAXLEN-1; | |
2600 | while (len-- > 0) { | |
2601 | UV auv; | |
2602 | fromstr = NEXTFROM; | |
354b74ae | 2603 | auv = SvUV_no_inf(fromstr, datumtype); |
fc241834 RGS |
2604 | if (in_bytes) auv = auv % 0x100; |
2605 | if (utf8) { | |
2606 | W_utf8: | |
bf4a926a | 2607 | if (cur >= end) { |
fc241834 | 2608 | *cur = '\0'; |
b162af07 | 2609 | SvCUR_set(cat, cur - start); |
fc241834 RGS |
2610 | |
2611 | GROWING(0, cat, start, cur, len+UTF8_MAXLEN); | |
2612 | end = start+SvLEN(cat)-UTF8_MAXLEN; | |
2613 | } | |
05fefba9 | 2614 | cur = (char *) uvchr_to_utf8_flags((U8 *) cur, auv, 0); |
fc241834 RGS |
2615 | } else { |
2616 | if (auv >= 0x100) { | |
2617 | if (!SvUTF8(cat)) { | |
2618 | *cur = '\0'; | |
b162af07 | 2619 | SvCUR_set(cat, cur - start); |
fc241834 RGS |
2620 | marked_upgrade(aTHX_ cat, symptr); |
2621 | lookahead.flags |= FLAG_DO_UTF8; | |
2622 | lookahead.strbeg = symptr->strbeg; | |
2623 | utf8 = 1; | |
2624 | start = SvPVX(cat); | |
2625 | cur = start + SvCUR(cat); | |
2626 | end = start+SvLEN(cat)-UTF8_MAXLEN; | |
2627 | goto W_utf8; | |
2628 | } | |
a2a5de95 NC |
2629 | Perl_ck_warner(aTHX_ packWARN(WARN_PACK), |
2630 | "Character in 'W' format wrapped in pack"); | |
fc241834 RGS |
2631 | auv &= 0xff; |
2632 | } | |
2633 | if (cur >= end) { | |
2634 | *cur = '\0'; | |
b162af07 | 2635 | SvCUR_set(cat, cur - start); |
fc241834 RGS |
2636 | GROWING(0, cat, start, cur, len+1); |
2637 | end = start+SvLEN(cat)-1; | |
2638 | } | |
fe2774ed | 2639 | *(U8 *) cur++ = (U8)auv; |
a6ec74c1 JH |
2640 | } |
2641 | } | |
2642 | break; | |
fc241834 RGS |
2643 | } |
2644 | case 'U': { | |
2645 | char *end; | |
2646 | ||
2647 | if (len == 0) { | |
2648 | if (!(symptr->flags & FLAG_DO_UTF8)) { | |
2649 | marked_upgrade(aTHX_ cat, symptr); | |
2650 | lookahead.flags |= FLAG_DO_UTF8; | |
2651 | lookahead.strbeg = symptr->strbeg; | |
2652 | } | |
2653 | utf8 = 0; | |
2654 | goto no_change; | |
2655 | } | |
2656 | ||
2657 | end = start+SvLEN(cat); | |
2658 | if (!utf8) end -= UTF8_MAXLEN; | |
a6ec74c1 | 2659 | while (len-- > 0) { |
fc241834 | 2660 | UV auv; |
a6ec74c1 | 2661 | fromstr = NEXTFROM; |
354b74ae | 2662 | auv = SvUV_no_inf(fromstr, datumtype); |
fc241834 | 2663 | if (utf8) { |
81b3f640 | 2664 | U8 buffer[UTF8_MAXLEN+1], *endb; |
05fefba9 | 2665 | endb = uvchr_to_utf8_flags(buffer, UNI_TO_NATIVE(auv), 0); |
fc241834 RGS |
2666 | if (cur+(endb-buffer)*UTF8_EXPAND >= end) { |
2667 | *cur = '\0'; | |
b162af07 | 2668 | SvCUR_set(cat, cur - start); |
fc241834 RGS |
2669 | GROWING(0, cat, start, cur, |
2670 | len+(endb-buffer)*UTF8_EXPAND); | |
2671 | end = start+SvLEN(cat); | |
2672 | } | |
d21d7215 | 2673 | cur = my_bytes_to_utf8(buffer, endb-buffer, cur, 0); |
fc241834 RGS |
2674 | } else { |
2675 | if (cur >= end) { | |
2676 | *cur = '\0'; | |
b162af07 | 2677 | SvCUR_set(cat, cur - start); |
fc241834 RGS |
2678 | GROWING(0, cat, start, cur, len+UTF8_MAXLEN); |
2679 | end = start+SvLEN(cat)-UTF8_MAXLEN; | |
2680 | } | |
05fefba9 KW |
2681 | cur = (char *) uvchr_to_utf8_flags((U8 *) cur, |
2682 | UNI_TO_NATIVE(auv), | |
2683 | 0); | |
fc241834 | 2684 | } |
a6ec74c1 | 2685 | } |
a6ec74c1 | 2686 | break; |
fc241834 | 2687 | } |
a6ec74c1 JH |
2688 | /* Float and double added by gnb@melba.bby.oz.au 22/11/89 */ |
2689 | case 'f': | |
a6ec74c1 | 2690 | while (len-- > 0) { |
f337b084 TH |
2691 | float afloat; |
2692 | NV anv; | |
a6ec74c1 | 2693 | fromstr = NEXTFROM; |
f337b084 | 2694 | anv = SvNV(fromstr); |
a7157111 | 2695 | # if (defined(VMS) && !defined(_IEEE_FP)) || defined(DOUBLE_IS_VAX_FLOAT) |
f337b084 | 2696 | /* IEEE fp overflow shenanigans are unavailable on VAX and optional |
fc241834 RGS |
2697 | * on Alpha; fake it if we don't have them. |
2698 | */ | |
f337b084 | 2699 | if (anv > FLT_MAX) |
fc241834 | 2700 | afloat = FLT_MAX; |
f337b084 | 2701 | else if (anv < -FLT_MAX) |
fc241834 | 2702 | afloat = -FLT_MAX; |
f337b084 | 2703 | else afloat = (float)anv; |
baf3cf9c | 2704 | # else |
a7157111 | 2705 | # if defined(NAN_COMPARE_BROKEN) && defined(Perl_isnan) |
d22fb6ca DD |
2706 | if(Perl_isnan(anv)) |
2707 | afloat = (float)NV_NAN; | |
2708 | else | |
a7157111 JH |
2709 | # endif |
2710 | # ifdef NV_INF | |
919894b7 DM |
2711 | /* a simple cast to float is undefined if outside |
2712 | * the range of values that can be represented */ | |
2713 | afloat = (float)(anv > FLT_MAX ? NV_INF : | |
2714 | anv < -FLT_MAX ? -NV_INF : anv); | |
a7157111 | 2715 | # endif |
baf3cf9c | 2716 | # endif |
3a88beaa | 2717 | PUSH_VAR(utf8, cur, afloat, needs_swap); |
a6ec74c1 JH |
2718 | } |
2719 | break; | |
2720 | case 'd': | |
a6ec74c1 | 2721 | while (len-- > 0) { |
f337b084 TH |
2722 | double adouble; |
2723 | NV anv; | |
a6ec74c1 | 2724 | fromstr = NEXTFROM; |
f337b084 | 2725 | anv = SvNV(fromstr); |
a7157111 | 2726 | # if (defined(VMS) && !defined(_IEEE_FP)) || defined(DOUBLE_IS_VAX_FLOAT) |
f337b084 | 2727 | /* IEEE fp overflow shenanigans are unavailable on VAX and optional |
fc241834 RGS |
2728 | * on Alpha; fake it if we don't have them. |
2729 | */ | |
f337b084 | 2730 | if (anv > DBL_MAX) |
fc241834 | 2731 | adouble = DBL_MAX; |
f337b084 | 2732 | else if (anv < -DBL_MAX) |
fc241834 | 2733 | adouble = -DBL_MAX; |
f337b084 | 2734 | else adouble = (double)anv; |
baf3cf9c | 2735 | # else |
f337b084 | 2736 | adouble = (double)anv; |
baf3cf9c | 2737 | # endif |
3a88beaa | 2738 | PUSH_VAR(utf8, cur, adouble, needs_swap); |
a6ec74c1 JH |
2739 | } |
2740 | break; | |
fc241834 | 2741 | case 'F': { |
275663fa | 2742 | NV_bytes anv; |
1109a392 | 2743 | Zero(&anv, 1, NV); /* can be long double with unused bits */ |
92d41999 JH |
2744 | while (len-- > 0) { |
2745 | fromstr = NEXTFROM; | |
cd07c537 DM |
2746 | #ifdef __GNUC__ |
2747 | /* to work round a gcc/x86 bug; don't use SvNV */ | |
2748 | anv.nv = sv_2nv(fromstr); | |
070e2677 TC |
2749 | # if defined(LONGDOUBLE_X86_80_BIT) && defined(USE_LONG_DOUBLE) \ |
2750 | && LONG_DOUBLESIZE > 10 | |
2751 | /* GCC sometimes overwrites the padding in the | |
2752 | assignment above */ | |
2753 | Zero(anv.bytes+10, sizeof(anv.bytes) - 10, U8); | |
2754 | # endif | |
cd07c537 | 2755 | #else |
275663fa | 2756 | anv.nv = SvNV(fromstr); |
cd07c537 | 2757 | #endif |
3a88beaa | 2758 | PUSH_BYTES(utf8, cur, anv.bytes, sizeof(anv.bytes), needs_swap); |
92d41999 JH |
2759 | } |
2760 | break; | |
fc241834 | 2761 | } |
92d41999 | 2762 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) |
fc241834 | 2763 | case 'D': { |
275663fa | 2764 | ld_bytes aldouble; |
1109a392 MHM |
2765 | /* long doubles can have unused bits, which may be nonzero */ |
2766 | Zero(&aldouble, 1, long double); | |
92d41999 JH |
2767 | while (len-- > 0) { |
2768 | fromstr = NEXTFROM; | |
cd07c537 DM |
2769 | # ifdef __GNUC__ |
2770 | /* to work round a gcc/x86 bug; don't use SvNV */ | |
2771 | aldouble.ld = (long double)sv_2nv(fromstr); | |
070e2677 TC |
2772 | # if defined(LONGDOUBLE_X86_80_BIT) && LONG_DOUBLESIZE > 10 |
2773 | /* GCC sometimes overwrites the padding in the | |
2774 | assignment above */ | |
2775 | Zero(aldouble.bytes+10, sizeof(aldouble.bytes) - 10, U8); | |
2776 | # endif | |
cd07c537 | 2777 | # else |
275663fa | 2778 | aldouble.ld = (long double)SvNV(fromstr); |
cd07c537 | 2779 | # endif |
3a88beaa NC |
2780 | PUSH_BYTES(utf8, cur, aldouble.bytes, sizeof(aldouble.bytes), |
2781 | needs_swap); | |
92d41999 JH |
2782 | } |
2783 | break; | |
fc241834 | 2784 | } |
92d41999 | 2785 | #endif |
068bd2e7 | 2786 | case 'n' | TYPE_IS_SHRIEKING: |
a6ec74c1 JH |
2787 | case 'n': |
2788 | while (len-- > 0) { | |
f337b084 | 2789 | I16 ai16; |
a6ec74c1 | 2790 | fromstr = NEXTFROM; |
354b74ae | 2791 | ai16 = (I16)SvIV_no_inf(fromstr, datumtype); |
ef108786 | 2792 | ai16 = PerlSock_htons(ai16); |
3a88beaa | 2793 | PUSH16(utf8, cur, &ai16, FALSE); |
a6ec74c1 JH |
2794 | } |
2795 | break; | |
068bd2e7 | 2796 | case 'v' | TYPE_IS_SHRIEKING: |
a6ec74c1 JH |
2797 | case 'v': |
2798 | while (len-- > 0) { | |
f337b084 | 2799 | I16 ai16; |
a6ec74c1 | 2800 | fromstr = NEXTFROM; |
354b74ae | 2801 | ai16 = (I16)SvIV_no_inf(fromstr, datumtype); |
ef108786 | 2802 | ai16 = htovs(ai16); |
3a88beaa | 2803 | PUSH16(utf8, cur, &ai16, FALSE); |
a6ec74c1 JH |
2804 | } |
2805 | break; | |
49704364 | 2806 | case 'S' | TYPE_IS_SHRIEKING: |
a6ec74c1 | 2807 | #if SHORTSIZE != SIZE16 |
fc241834 | 2808 | while (len-- > 0) { |
f337b084 | 2809 | unsigned short aushort; |
fc241834 | 2810 | fromstr = NEXTFROM; |
354b74ae | 2811 | aushort = SvUV_no_inf(fromstr, datumtype); |
3a88beaa | 2812 | PUSH_VAR(utf8, cur, aushort, needs_swap); |
fc241834 | 2813 | } |
49704364 WL |
2814 | break; |
2815 | #else | |
924ba076 | 2816 | /* FALLTHROUGH */ |
a6ec74c1 | 2817 | #endif |
49704364 | 2818 | case 'S': |
fc241834 | 2819 | while (len-- > 0) { |
f337b084 | 2820 | U16 au16; |
fc241834 | 2821 | fromstr = NEXTFROM; |
354b74ae | 2822 | au16 = (U16)SvUV_no_inf(fromstr, datumtype); |
3a88beaa | 2823 | PUSH16(utf8, cur, &au16, needs_swap); |
a6ec74c1 JH |
2824 | } |
2825 | break; | |
49704364 | 2826 | case 's' | TYPE_IS_SHRIEKING: |
a6ec74c1 | 2827 | #if SHORTSIZE != SIZE16 |
fc241834 | 2828 | while (len-- > 0) { |
f337b084 | 2829 | short ashort; |
fc241834 | 2830 | fromstr = NEXTFROM; |
354b74ae | 2831 | ashort = SvIV_no_inf(fromstr, datumtype); |
3a88beaa | 2832 | PUSH_VAR(utf8, cur, ashort, needs_swap); |
a6ec74c1 | 2833 | } |
49704364 WL |
2834 | break; |
2835 | #else | |
924ba076 | 2836 | /* FALLTHROUGH */ |
a6ec74c1 | 2837 | #endif |
49704364 WL |
2838 | case 's': |
2839 | while (len-- > 0) { | |
f337b084 | 2840 | I16 ai16; |
49704364 | 2841 | fromstr = NEXTFROM; |
354b74ae | 2842 | ai16 = (I16)SvIV_no_inf(fromstr, datumtype); |
3a88beaa | 2843 | PUSH16(utf8, cur, &ai16, needs_swap); |
a6ec74c1 JH |
2844 | } |
2845 | break; | |
2846 | case 'I': | |
49704364 | 2847 | case 'I' | TYPE_IS_SHRIEKING: |
a6ec74c1 | 2848 | while (len-- > 0) { |
f337b084 | 2849 | unsigned int auint; |
a6ec74c1 | 2850 | fromstr = NEXTFROM; |
354b74ae | 2851 | auint = SvUV_no_inf(fromstr, datumtype); |
3a88beaa | 2852 | PUSH_VAR(utf8, cur, auint, needs_swap); |
a6ec74c1 JH |
2853 | } |
2854 | break; | |
92d41999 JH |
2855 | case 'j': |
2856 | while (len-- > 0) { | |
f337b084 | 2857 | IV aiv; |
92d41999 | 2858 | fromstr = NEXTFROM; |
354b74ae | 2859 | aiv = SvIV_no_inf(fromstr, datumtype); |
3a88beaa | 2860 | PUSH_VAR(utf8, cur, aiv, needs_swap); |
92d41999 JH |
2861 | } |
2862 | break; | |
2863 | case 'J': | |
2864 | while (len-- > 0) { | |
f337b084 | 2865 | UV auv; |
92d41999 | 2866 | fromstr = NEXTFROM; |
354b74ae | 2867 | auv = SvUV_no_inf(fromstr, datumtype); |
3a88beaa | 2868 | PUSH_VAR(utf8, cur, auv, needs_swap); |
92d41999 JH |
2869 | } |
2870 | break; | |
a6ec74c1 JH |
2871 | case 'w': |
2872 | while (len-- > 0) { | |
f337b084 | 2873 | NV anv; |
a6ec74c1 | 2874 | fromstr = NEXTFROM; |
83388ae2 | 2875 | S_sv_check_infnan(aTHX_ fromstr, datumtype); |
354b74ae | 2876 | anv = SvNV_nomg(fromstr); |
a6ec74c1 | 2877 | |
f337b084 TH |
2878 | if (anv < 0) { |
2879 | *cur = '\0'; | |
b162af07 | 2880 | SvCUR_set(cat, cur - start); |
49704364 | 2881 | Perl_croak(aTHX_ "Cannot compress negative numbers in pack"); |
f337b084 | 2882 | } |
a6ec74c1 | 2883 | |
196b62db NC |
2884 | /* 0xFFFFFFFFFFFFFFFF may cast to 18446744073709551616.0, |
2885 | which is == UV_MAX_P1. IOK is fine (instead of UV_only), as | |
2886 | any negative IVs will have already been got by the croak() | |
2887 | above. IOK is untrue for fractions, so we test them | |
2888 | against UV_MAX_P1. */ | |
f337b084 TH |
2889 | if (SvIOK(fromstr) || anv < UV_MAX_P1) { |
2890 | char buf[(sizeof(UV)*CHAR_BIT)/7+1]; | |
a6ec74c1 | 2891 | char *in = buf + sizeof(buf); |
1e9a122e | 2892 | UV auv = SvUV_nomg(fromstr); |
a6ec74c1 JH |
2893 | |
2894 | do { | |
eb160463 | 2895 | *--in = (char)((auv & 0x7f) | 0x80); |
a6ec74c1 JH |
2896 | auv >>= 7; |
2897 | } while (auv); | |
2898 | buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */ | |
f337b084 TH |
2899 | PUSH_GROWING_BYTES(utf8, cat, start, cur, |
2900 | in, (buf + sizeof(buf)) - in); | |
2901 | } else if (SvPOKp(fromstr)) | |
2902 | goto w_string; | |
a6ec74c1 | 2903 | else if (SvNOKp(fromstr)) { |
0258719b | 2904 | /* 10**NV_MAX_10_EXP is the largest power of 10 |
486ec47a | 2905 | so 10**(NV_MAX_10_EXP+1) is definitely unrepresentable |
0258719b NC |
2906 | given 10**(NV_MAX_10_EXP+1) == 128 ** x solve for x: |
2907 | x = (NV_MAX_10_EXP+1) * log (10) / log (128) | |
2908 | And with that many bytes only Inf can overflow. | |
8f8d40ab PG |
2909 | Some C compilers are strict about integral constant |
2910 | expressions so we conservatively divide by a slightly | |
2911 | smaller integer instead of multiplying by the exact | |
2912 | floating-point value. | |
0258719b NC |
2913 | */ |
2914 | #ifdef NV_MAX_10_EXP | |
f337b084 | 2915 | /* char buf[1 + (int)((NV_MAX_10_EXP + 1) * 0.47456)]; -- invalid C */ |
8f8d40ab | 2916 | char buf[1 + (int)((NV_MAX_10_EXP + 1) / 2)]; /* valid C */ |
0258719b | 2917 | #else |
f337b084 | 2918 | /* char buf[1 + (int)((308 + 1) * 0.47456)]; -- invalid C */ |
8f8d40ab | 2919 | char buf[1 + (int)((308 + 1) / 2)]; /* valid C */ |
0258719b | 2920 | #endif |
a6ec74c1 JH |
2921 | char *in = buf + sizeof(buf); |
2922 | ||
8b6e33c7 | 2923 | anv = Perl_floor(anv); |
a6ec74c1 | 2924 | do { |
8b6e33c7 | 2925 | const NV next = Perl_floor(anv / 128); |
a6ec74c1 | 2926 | if (in <= buf) /* this cannot happen ;-) */ |
0c7df902 | 2927 | Perl_croak(aTHX_ "Cannot compress integer in pack"); |
0258719b | 2928 | *--in = (unsigned char)(anv - (next * 128)) | 0x80; |
15e9f109 NC |
2929 | anv = next; |
2930 | } while (anv > 0); | |
a6ec74c1 | 2931 | buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */ |
f337b084 TH |
2932 | PUSH_GROWING_BYTES(utf8, cat, start, cur, |
2933 | in, (buf + sizeof(buf)) - in); | |
2934 | } else { | |
8b6e33c7 AL |
2935 | const char *from; |
2936 | char *result, *in; | |
735b914b JH |
2937 | SV *norm; |
2938 | STRLEN len; | |
2939 | bool done; | |
2940 | ||
f337b084 | 2941 | w_string: |
735b914b | 2942 | /* Copy string and check for compliance */ |
1e9a122e | 2943 | from = SvPV_nomg_const(fromstr, len); |
735b914b | 2944 | if ((norm = is_an_int(from, len)) == NULL) |
49704364 | 2945 | Perl_croak(aTHX_ "Can only compress unsigned integers in pack"); |
735b914b | 2946 | |
a02a5408 | 2947 | Newx(result, len, char); |
735b914b JH |
2948 | in = result + len; |
2949 | done = FALSE; | |
f337b084 | 2950 | while (!done) *--in = div128(norm, &done) | 0x80; |
735b914b | 2951 | result[len - 1] &= 0x7F; /* clear continue bit */ |
f337b084 TH |
2952 | PUSH_GROWING_BYTES(utf8, cat, start, cur, |
2953 | in, (result + len) - in); | |
735b914b JH |
2954 | Safefree(result); |
2955 | SvREFCNT_dec(norm); /* free norm */ | |
fc241834 | 2956 | } |
a6ec74c1 JH |
2957 | } |
2958 | break; | |
2959 | case 'i': | |
49704364 | 2960 | case 'i' | TYPE_IS_SHRIEKING: |
a6ec74c1 | 2961 | while (len-- > 0) { |
f337b084 | 2962 | int aint; |
a6ec74c1 | 2963 | fromstr = NEXTFROM; |
354b74ae | 2964 | aint = SvIV_no_inf(fromstr, datumtype); |
3a88beaa | 2965 | PUSH_VAR(utf8, cur, aint, needs_swap); |
a6ec74c1 JH |
2966 | } |
2967 | break; | |
068bd2e7 | 2968 | case 'N' | TYPE_IS_SHRIEKING: |
a6ec74c1 JH |
2969 | case 'N': |
2970 | while (len-- > 0) { | |
f337b084 | 2971 | U32 au32; |
a6ec74c1 | 2972 | fromstr = NEXTFROM; |
354b74ae | 2973 | au32 = SvUV_no_inf(fromstr, datumtype); |
ef108786 | 2974 | au32 = PerlSock_htonl(au32); |
3a88beaa | 2975 | PUSH32(utf8, cur, &au32, FALSE); |
a6ec74c1 JH |
2976 | } |
2977 | break; | |
068bd2e7 | 2978 | case 'V' | TYPE_IS_SHRIEKING: |
a6ec74c1 JH |
2979 | case 'V': |
2980 | while (len-- > 0) { | |
f337b084 | 2981 | U32 au32; |
a6ec74c1 | 2982 | fromstr = NEXTFROM; |
354b74ae | 2983 | au32 = SvUV_no_inf(fromstr, datumtype); |
ef108786 | 2984 | au32 = htovl(au32); |
3a88beaa | 2985 | PUSH32(utf8, cur, &au32, FALSE); |
a6ec74c1 JH |
2986 | } |
2987 | break; | |
49704364 | 2988 | case 'L' | TYPE_IS_SHRIEKING: |
a6ec74c1 | 2989 | #if LONGSIZE != SIZE32 |
fc241834 | 2990 | while (len-- > 0) { |
f337b084 | 2991 | unsigned long aulong; |
fc241834 | 2992 | fromstr = NEXTFROM; |
354b74ae | 2993 | aulong = SvUV_no_inf(fromstr, datumtype); |
3a88beaa | 2994 | PUSH_VAR(utf8, cur, aulong, needs_swap); |
a6ec74c1 | 2995 | } |
49704364 WL |
2996 | break; |
2997 | #else | |
2998 | /* Fall though! */ | |
a6ec74c1 | 2999 | #endif |
49704364 | 3000 | case 'L': |
fc241834 | 3001 | while (len-- > 0) { |
f337b084 | 3002 | U32 au32; |
fc241834 | 3003 | fromstr = NEXTFROM; |
354b74ae | 3004 | au32 = SvUV_no_inf(fromstr, datumtype); |
3a88beaa | 3005 | PUSH32(utf8, cur, &au32, needs_swap); |
a6ec74c1 JH |
3006 | } |
3007 | break; | |
49704364 | 3008 | case 'l' | TYPE_IS_SHRIEKING: |
a6ec74c1 | 3009 | #if LONGSIZE != SIZE32 |
fc241834 | 3010 | while (len-- > 0) { |
f337b084 | 3011 | long along; |
fc241834 | 3012 | fromstr = NEXTFROM; |
354b74ae | 3013 | along = SvIV_no_inf(fromstr, datumtype); |
3a88beaa | 3014 | PUSH_VAR(utf8, cur, along, needs_swap); |
a6ec74c1 | 3015 | } |
49704364 WL |
3016 | break; |
3017 | #else | |
3018 | /* Fall though! */ | |
a6ec74c1 | 3019 | #endif |
49704364 WL |
3020 | case 'l': |
3021 | while (len-- > 0) { | |
f337b084 | 3022 | I32 ai32; |
49704364 | 3023 | fromstr = NEXTFROM; |
354b74ae | 3024 | ai32 = SvIV_no_inf(fromstr, datumtype); |
3a88beaa | 3025 | PUSH32(utf8, cur, &ai32, needs_swap); |
a6ec74c1 JH |
3026 | } |
3027 | break; | |
c174bf3b | 3028 | #if defined(HAS_QUAD) && IVSIZE >= 8 |
a6ec74c1 JH |
3029 | case 'Q': |
3030 | while (len-- > 0) { | |
f337b084 | 3031 | Uquad_t auquad; |
a6ec74c1 | 3032 | fromstr = NEXTFROM; |
354b74ae | 3033 | auquad = (Uquad_t) SvUV_no_inf(fromstr, datumtype); |
3a88beaa | 3034 | PUSH_VAR(utf8, cur, auquad, needs_swap); |
a6ec74c1 JH |
3035 | } |
3036 | break; | |
3037 | case 'q': | |
3038 | while (len-- > 0) { | |
f337b084 | 3039 | Quad_t aquad; |
a6ec74c1 | 3040 | fromstr = NEXTFROM; |
354b74ae | 3041 | aquad = (Quad_t)SvIV_no_inf(fromstr, datumtype); |
3a88beaa | 3042 | PUSH_VAR(utf8, cur, aquad, needs_swap); |
a6ec74c1 JH |
3043 | } |
3044 | break; | |
1640b983 | 3045 | #endif |
a6ec74c1 JH |
3046 | case 'P': |
3047 | len = 1; /* assume SV is correct length */ | |
f337b084 | 3048 | GROWING(utf8, cat, start, cur, sizeof(char *)); |
924ba076 | 3049 | /* FALLTHROUGH */ |
a6ec74c1 JH |
3050 | case 'p': |
3051 | while (len-- > 0) { | |
83003860 | 3052 | const char *aptr; |
f337b084 | 3053 | |
a6ec74c1 | 3054 | fromstr = NEXTFROM; |
28a4f200 TH |
3055 | SvGETMAGIC(fromstr); |
3056 | if (!SvOK(fromstr)) aptr = NULL; | |
a6ec74c1 | 3057 | else { |
a6ec74c1 JH |
3058 | /* XXX better yet, could spirit away the string to |
3059 | * a safe spot and hang on to it until the result | |
3060 | * of pack() (and all copies of the result) are | |
3061 | * gone. | |
3062 | */ | |
b199a398 FC |
3063 | if (((SvTEMP(fromstr) && SvREFCNT(fromstr) == 1) |
3064 | || (SvPADTMP(fromstr) && | |
a2a5de95 NC |
3065 | !SvREADONLY(fromstr)))) { |
3066 | Perl_ck_warner(aTHX_ packWARN(WARN_PACK), | |
3067 | "Attempt to pack pointer to temporary value"); | |
a6ec74c1 JH |
3068 | } |
3069 | if (SvPOK(fromstr) || SvNIOK(fromstr)) | |
2596d9fe | 3070 | aptr = SvPV_nomg_const_nolen(fromstr); |
a6ec74c1 | 3071 | else |
2596d9fe | 3072 | aptr = SvPV_force_flags_nolen(fromstr, 0); |
a6ec74c1 | 3073 | } |
3a88beaa | 3074 | PUSH_VAR(utf8, cur, aptr, needs_swap); |
a6ec74c1 JH |
3075 | } |
3076 | break; | |
fc241834 | 3077 | case 'u': { |
f7fe979e | 3078 | const char *aptr, *aend; |
fc241834 | 3079 | bool from_utf8; |
f337b084 | 3080 | |
a6ec74c1 | 3081 | fromstr = NEXTFROM; |
fc241834 RGS |
3082 | if (len <= 2) len = 45; |
3083 | else len = len / 3 * 3; | |
3084 | if (len >= 64) { | |
a2a5de95 NC |
3085 | Perl_ck_warner(aTHX_ packWARN(WARN_PACK), |
3086 | "Field too wide in 'u' format in pack"); | |
fc241834 RGS |
3087 | len = 63; |
3088 | } | |
83003860 | 3089 | aptr = SvPV_const(fromstr, fromlen); |
fc241834 RGS |
3090 | from_utf8 = DO_UTF8(fromstr); |
3091 | if (from_utf8) { | |
3092 | aend = aptr + fromlen; | |
3f63b0e5 | 3093 | fromlen = sv_len_utf8_nomg(fromstr); |
fc241834 RGS |
3094 | } else aend = NULL; /* Unused, but keep compilers happy */ |
3095 | GROWING(utf8, cat, start, cur, (fromlen+2) / 3 * 4 + (fromlen+len-1)/len * 2); | |
a6ec74c1 | 3096 | while (fromlen > 0) { |
fc241834 | 3097 | U8 *end; |
e1b825c1 | 3098 | SSize_t todo; |
fc241834 | 3099 | U8 hunk[1+63/3*4+1]; |
a6ec74c1 | 3100 | |
e1b825c1 | 3101 | if ((SSize_t)fromlen > len) |
a6ec74c1 JH |
3102 | todo = len; |
3103 | else | |
3104 | todo = fromlen; | |
fc241834 RGS |
3105 | if (from_utf8) { |
3106 | char buffer[64]; | |
9df874cd | 3107 | if (!S_utf8_to_bytes(aTHX_ &aptr, aend, buffer, todo, |
fc241834 RGS |
3108 | 'u' | TYPE_IS_PACK)) { |
3109 | *cur = '\0'; | |
b162af07 | 3110 | SvCUR_set(cat, cur - start); |
5637ef5b | 3111 | Perl_croak(aTHX_ "panic: string is shorter than advertised, " |
e1b825c1 Z |
3112 | "aptr=%p, aend=%p, buffer=%p, todo=%zd", |
3113 | aptr, aend, buffer, todo); | |
fc241834 | 3114 | } |
e68aed92 | 3115 | end = doencodes(hunk, (const U8 *)buffer, todo); |
fc241834 | 3116 | } else { |
e68aed92 | 3117 | end = doencodes(hunk, (const U8 *)aptr, todo); |
fc241834 RGS |
3118 | aptr += todo; |
3119 | } | |
3a88beaa | 3120 | PUSH_BYTES(utf8, cur, hunk, end-hunk, 0); |
fc241834 RGS |
3121 | fromlen -= todo; |
3122 | } | |
a6ec74c1 JH |
3123 | break; |
3124 | } | |
f337b084 TH |
3125 | } |
3126 | *cur = '\0'; | |
b162af07 | 3127 | SvCUR_set(cat, cur - start); |
f337b084 | 3128 | no_change: |
49704364 | 3129 | *symptr = lookahead; |
a6ec74c1 | 3130 | } |
49704364 | 3131 | return beglist; |
18529408 IZ |
3132 | } |
3133 | #undef NEXTFROM | |
3134 | ||
3135 | ||
3136 | PP(pp_pack) | |
3137 | { | |
20b7effb | 3138 | dSP; dMARK; dORIGMARK; dTARGET; |
eb578fdb | 3139 | SV *cat = TARG; |
18529408 | 3140 | STRLEN fromlen; |
349d4f2f | 3141 | SV *pat_sv = *++MARK; |
eb578fdb KW |
3142 | const char *pat = SvPV_const(pat_sv, fromlen); |
3143 | const char *patend = pat + fromlen; | |
18529408 IZ |
3144 | |
3145 | MARK++; | |
e8f7c79f | 3146 | SvPVCLEAR(cat); |
f337b084 | 3147 | SvUTF8_off(cat); |
18529408 | 3148 | |
7accc089 | 3149 | packlist(cat, pat, patend, MARK, SP + 1); |
18529408 | 3150 | |
fd879d93 KW |
3151 | if (SvUTF8(cat)) { |
3152 | STRLEN result_len; | |
3153 | const char * result = SvPV_nomg(cat, result_len); | |
3154 | const U8 * error_pos; | |
3155 | ||
3156 | if (! is_utf8_string_loc((U8 *) result, result_len, &error_pos)) { | |
3157 | _force_out_malformed_utf8_message(error_pos, | |
3158 | (U8 *) result + result_len, | |
3159 | 0, /* no flags */ | |
3160 | 1 /* Die */ | |
3161 | ); | |
3162 | NOT_REACHED; /* NOTREACHED */ | |
3163 | } | |
3164 | } | |
3165 | ||
a6ec74c1 JH |
3166 | SvSETMAGIC(cat); |
3167 | SP = ORIGMARK; | |
3168 | PUSHs(cat); | |
3169 | RETURN; | |
3170 | } | |
a6ec74c1 | 3171 | |
73cb7263 | 3172 | /* |
14d04a33 | 3173 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 3174 | */ |