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 (!<>) */ | |
48 | I32 length; /* length/repeat count */ | |
49 | howlen_t howlen; /* how length is given */ | |
50 | int level; /* () nesting level */ | |
51 | U32 flags; /* /=4, comma=2, pack=1 */ | |
52 | /* and group modifiers */ | |
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 | ||
1109a392 MHM |
115 | #if U16SIZE > SIZE16 || U32SIZE > SIZE32 |
116 | # if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678 /* little-endian */ | |
08ca2aa3 TH |
117 | # define OFF16(p) ((char*)(p)) |
118 | # define OFF32(p) ((char*)(p)) | |
a6ec74c1 | 119 | # else |
1109a392 | 120 | # if BYTEORDER == 0x4321 || BYTEORDER == 0x87654321 /* big-endian */ |
a6ec74c1 JH |
121 | # define OFF16(p) ((char*)(p) + (sizeof(U16) - SIZE16)) |
122 | # define OFF32(p) ((char*)(p) + (sizeof(U32) - SIZE32)) | |
123 | # else | |
08ca2aa3 | 124 | ++++ bad cray byte order |
a6ec74c1 JH |
125 | # endif |
126 | # endif | |
a6ec74c1 | 127 | #else |
08ca2aa3 TH |
128 | # define OFF16(p) ((char *) (p)) |
129 | # define OFF32(p) ((char *) (p)) | |
a6ec74c1 JH |
130 | #endif |
131 | ||
3a88beaa NC |
132 | #define PUSH16(utf8, cur, p, needs_swap) \ |
133 | PUSH_BYTES(utf8, cur, OFF16(p), SIZE16, needs_swap) | |
134 | #define PUSH32(utf8, cur, p, needs_swap) \ | |
135 | PUSH_BYTES(utf8, cur, OFF32(p), SIZE32, needs_swap) | |
08ca2aa3 | 136 | |
a1219b5e NC |
137 | #if BYTEORDER == 0x4321 || BYTEORDER == 0x87654321 /* big-endian */ |
138 | # define NEEDS_SWAP(d) (TYPE_ENDIANNESS(d) == TYPE_IS_LITTLE_ENDIAN) | |
139 | #elif BYTEORDER == 0x1234 || BYTEORDER == 0x12345678 /* little-endian */ | |
140 | # define NEEDS_SWAP(d) (TYPE_ENDIANNESS(d) == TYPE_IS_BIG_ENDIAN) | |
141 | #else | |
142 | # error "Unsupported byteorder" | |
20aa3a38 NC |
143 | /* Need to add code here to re-instate mixed endian support. |
144 | NEEDS_SWAP would need to hold a flag indicating which action to | |
145 | take, and S_reverse_copy and the code in uni_to_bytes would need | |
146 | logic adding to deal with any mixed-endian transformations needed. | |
147 | */ | |
a1219b5e NC |
148 | #endif |
149 | ||
08ca2aa3 | 150 | /* Only to be used inside a loop (see the break) */ |
aaec8192 | 151 | #define SHIFT_BYTES(utf8, s, strend, buf, len, datumtype, needs_swap) \ |
08ca2aa3 | 152 | STMT_START { \ |
228e69a7 | 153 | if (UNLIKELY(utf8)) { \ |
f337b084 | 154 | if (!uni_to_bytes(aTHX_ &s, strend, \ |
275663fa | 155 | (char *) (buf), len, datumtype)) break; \ |
08ca2aa3 | 156 | } else { \ |
228e69a7 | 157 | if (UNLIKELY(needs_swap)) \ |
20aa3a38 NC |
158 | S_reverse_copy(s, (char *) (buf), len); \ |
159 | else \ | |
160 | Copy(s, (char *) (buf), len, char); \ | |
275663fa | 161 | s += len; \ |
08ca2aa3 | 162 | } \ |
08ca2aa3 TH |
163 | } STMT_END |
164 | ||
aaec8192 NC |
165 | #define SHIFT16(utf8, s, strend, p, datumtype, needs_swap) \ |
166 | SHIFT_BYTES(utf8, s, strend, OFF16(p), SIZE16, datumtype, needs_swap) | |
7285e3f4 | 167 | |
aaec8192 NC |
168 | #define SHIFT32(utf8, s, strend, p, datumtype, needs_swap) \ |
169 | SHIFT_BYTES(utf8, s, strend, OFF32(p), SIZE32, datumtype, needs_swap) | |
7285e3f4 | 170 | |
aaec8192 NC |
171 | #define SHIFT_VAR(utf8, s, strend, var, datumtype, needs_swap) \ |
172 | SHIFT_BYTES(utf8, s, strend, &(var), sizeof(var), datumtype, needs_swap) | |
275663fa | 173 | |
3a88beaa NC |
174 | #define PUSH_VAR(utf8, aptr, var, needs_swap) \ |
175 | PUSH_BYTES(utf8, aptr, &(var), sizeof(var), needs_swap) | |
f337b084 | 176 | |
49704364 WL |
177 | /* Avoid stack overflow due to pathological templates. 100 should be plenty. */ |
178 | #define MAX_SUB_TEMPLATE_LEVEL 100 | |
179 | ||
66c611c5 | 180 | /* flags (note that type modifiers can also be used as flags!) */ |
f337b084 TH |
181 | #define FLAG_WAS_UTF8 0x40 |
182 | #define FLAG_PARSE_UTF8 0x20 /* Parse as utf8 */ | |
49704364 | 183 | #define FLAG_UNPACK_ONLY_ONE 0x10 |
f337b084 | 184 | #define FLAG_DO_UTF8 0x08 /* The underlying string is utf8 */ |
49704364 WL |
185 | #define FLAG_SLASH 0x04 |
186 | #define FLAG_COMMA 0x02 | |
187 | #define FLAG_PACK 0x01 | |
188 | ||
a6ec74c1 JH |
189 | STATIC SV * |
190 | S_mul128(pTHX_ SV *sv, U8 m) | |
191 | { | |
192 | STRLEN len; | |
193 | char *s = SvPV(sv, len); | |
194 | char *t; | |
a6ec74c1 | 195 | |
7918f24d NC |
196 | PERL_ARGS_ASSERT_MUL128; |
197 | ||
a6ec74c1 | 198 | if (!strnEQ(s, "0000", 4)) { /* need to grow sv */ |
396482e1 | 199 | SV * const tmpNew = newSVpvs("0000000000"); |
a6ec74c1 JH |
200 | |
201 | sv_catsv(tmpNew, sv); | |
202 | SvREFCNT_dec(sv); /* free old sv */ | |
203 | sv = tmpNew; | |
204 | s = SvPV(sv, len); | |
205 | } | |
206 | t = s + len - 1; | |
207 | while (!*t) /* trailing '\0'? */ | |
208 | t--; | |
209 | while (t > s) { | |
f7fe979e | 210 | const U32 i = ((*t - '0') << 7) + m; |
eb160463 GS |
211 | *(t--) = '0' + (char)(i % 10); |
212 | m = (char)(i / 10); | |
a6ec74c1 JH |
213 | } |
214 | return (sv); | |
215 | } | |
216 | ||
217 | /* Explosives and implosives. */ | |
218 | ||
219 | #if 'I' == 73 && 'J' == 74 | |
220 | /* On an ASCII/ISO kind of system */ | |
221 | #define ISUUCHAR(ch) ((ch) >= ' ' && (ch) < 'a') | |
222 | #else | |
223 | /* | |
224 | Some other sort of character set - use memchr() so we don't match | |
225 | the null byte. | |
226 | */ | |
227 | #define ISUUCHAR(ch) (memchr(PL_uuemap, (ch), sizeof(PL_uuemap)-1) || (ch) == ' ') | |
228 | #endif | |
229 | ||
66c611c5 | 230 | /* type modifiers */ |
62f95557 | 231 | #define TYPE_IS_SHRIEKING 0x100 |
1109a392 MHM |
232 | #define TYPE_IS_BIG_ENDIAN 0x200 |
233 | #define TYPE_IS_LITTLE_ENDIAN 0x400 | |
f337b084 | 234 | #define TYPE_IS_PACK 0x800 |
1109a392 | 235 | #define TYPE_ENDIANNESS_MASK (TYPE_IS_BIG_ENDIAN|TYPE_IS_LITTLE_ENDIAN) |
66c611c5 | 236 | #define TYPE_MODIFIERS(t) ((t) & ~0xFF) |
1109a392 MHM |
237 | #define TYPE_NO_MODIFIERS(t) ((t) & 0xFF) |
238 | ||
7212898e NC |
239 | # define TYPE_ENDIANNESS(t) ((t) & TYPE_ENDIANNESS_MASK) |
240 | # define TYPE_NO_ENDIANNESS(t) ((t) & ~TYPE_ENDIANNESS_MASK) | |
241 | ||
242 | # define ENDIANNESS_ALLOWED_TYPES "sSiIlLqQjJfFdDpP(" | |
243 | ||
78d46eaa | 244 | #define PACK_SIZE_CANNOT_CSUM 0x80 |
f337b084 | 245 | #define PACK_SIZE_UNPREDICTABLE 0x40 /* Not a fixed size element */ |
78d46eaa NC |
246 | #define PACK_SIZE_MASK 0x3F |
247 | ||
298bc19c | 248 | #include "packsizetables.c" |
78d46eaa | 249 | |
20aa3a38 NC |
250 | static void |
251 | S_reverse_copy(const char *src, char *dest, STRLEN len) | |
252 | { | |
253 | dest += len; | |
254 | while (len--) | |
255 | *--dest = *src++; | |
256 | } | |
257 | ||
08ca2aa3 | 258 | STATIC U8 |
f7fe979e | 259 | uni_to_byte(pTHX_ const char **s, const char *end, I32 datumtype) |
08ca2aa3 | 260 | { |
08ca2aa3 | 261 | STRLEN retlen; |
0bcc34c2 | 262 | UV val = utf8n_to_uvchr((U8 *) *s, end-*s, &retlen, |
f337b084 | 263 | ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY); |
486ec47a | 264 | /* We try to process malformed UTF-8 as much as possible (preferably with |
08ca2aa3 TH |
265 | warnings), but these two mean we make no progress in the string and |
266 | might enter an infinite loop */ | |
267 | if (retlen == (STRLEN) -1 || retlen == 0) | |
f337b084 TH |
268 | Perl_croak(aTHX_ "Malformed UTF-8 string in '%c' format in unpack", |
269 | (int) TYPE_NO_MODIFIERS(datumtype)); | |
08ca2aa3 | 270 | if (val >= 0x100) { |
a2a5de95 NC |
271 | Perl_ck_warner(aTHX_ packWARN(WARN_UNPACK), |
272 | "Character in '%c' format wrapped in unpack", | |
273 | (int) TYPE_NO_MODIFIERS(datumtype)); | |
08ca2aa3 TH |
274 | val &= 0xff; |
275 | } | |
276 | *s += retlen; | |
fe2774ed | 277 | return (U8)val; |
08ca2aa3 TH |
278 | } |
279 | ||
f337b084 TH |
280 | #define SHIFT_BYTE(utf8, s, strend, datumtype) ((utf8) ? \ |
281 | uni_to_byte(aTHX_ &(s), (strend), (datumtype)) : \ | |
08ca2aa3 TH |
282 | *(U8 *)(s)++) |
283 | ||
284 | STATIC bool | |
f7fe979e | 285 | uni_to_bytes(pTHX_ const char **s, const char *end, const char *buf, int buf_len, I32 datumtype) |
08ca2aa3 TH |
286 | { |
287 | UV val; | |
288 | STRLEN retlen; | |
f7fe979e | 289 | const char *from = *s; |
08ca2aa3 | 290 | int bad = 0; |
f7fe979e | 291 | const U32 flags = ckWARN(WARN_UTF8) ? |
08ca2aa3 | 292 | UTF8_CHECK_ONLY : (UTF8_CHECK_ONLY | UTF8_ALLOW_ANY); |
20aa3a38 NC |
293 | const bool needs_swap = NEEDS_SWAP(datumtype); |
294 | ||
228e69a7 | 295 | if (UNLIKELY(needs_swap)) |
20aa3a38 NC |
296 | buf += buf_len; |
297 | ||
08ca2aa3 TH |
298 | for (;buf_len > 0; buf_len--) { |
299 | if (from >= end) return FALSE; | |
f337b084 | 300 | val = utf8n_to_uvchr((U8 *) from, end-from, &retlen, flags); |
08ca2aa3 TH |
301 | if (retlen == (STRLEN) -1 || retlen == 0) { |
302 | from += UTF8SKIP(from); | |
303 | bad |= 1; | |
304 | } else from += retlen; | |
305 | if (val >= 0x100) { | |
306 | bad |= 2; | |
307 | val &= 0xff; | |
308 | } | |
228e69a7 | 309 | if (UNLIKELY(needs_swap)) |
20aa3a38 NC |
310 | *(U8 *)--buf = (U8)val; |
311 | else | |
312 | *(U8 *)buf++ = (U8)val; | |
08ca2aa3 TH |
313 | } |
314 | /* We have enough characters for the buffer. Did we have problems ? */ | |
315 | if (bad) { | |
316 | if (bad & 1) { | |
317 | /* Rewalk the string fragment while warning */ | |
f7fe979e | 318 | const char *ptr; |
9e27e96a | 319 | const int flags = ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY; |
08ca2aa3 TH |
320 | for (ptr = *s; ptr < from; ptr += UTF8SKIP(ptr)) { |
321 | if (ptr >= end) break; | |
c80e42f3 | 322 | utf8n_to_uvchr((U8 *) ptr, end-ptr, &retlen, flags); |
08ca2aa3 TH |
323 | } |
324 | if (from > end) from = end; | |
325 | } | |
a2a5de95 NC |
326 | if ((bad & 2)) |
327 | Perl_ck_warner(aTHX_ packWARN(datumtype & TYPE_IS_PACK ? | |
f337b084 | 328 | WARN_PACK : WARN_UNPACK), |
a2a5de95 NC |
329 | "Character(s) in '%c' format wrapped in %s", |
330 | (int) TYPE_NO_MODIFIERS(datumtype), | |
331 | datumtype & TYPE_IS_PACK ? "pack" : "unpack"); | |
08ca2aa3 TH |
332 | } |
333 | *s = from; | |
334 | return TRUE; | |
335 | } | |
336 | ||
337 | STATIC bool | |
f7fe979e | 338 | next_uni_uu(pTHX_ const char **s, const char *end, I32 *out) |
08ca2aa3 | 339 | { |
08ca2aa3 | 340 | STRLEN retlen; |
0bcc34c2 | 341 | const UV val = utf8n_to_uvchr((U8 *) *s, end-*s, &retlen, UTF8_CHECK_ONLY); |
08ca2aa3 TH |
342 | if (val >= 0x100 || !ISUUCHAR(val) || |
343 | retlen == (STRLEN) -1 || retlen == 0) { | |
344 | *out = 0; | |
345 | return FALSE; | |
346 | } | |
347 | *out = PL_uudmap[val] & 077; | |
f337b084 | 348 | *s += retlen; |
08ca2aa3 TH |
349 | return TRUE; |
350 | } | |
78d46eaa | 351 | |
64844641 | 352 | STATIC char * |
3a88beaa | 353 | S_bytes_to_uni(const U8 *start, STRLEN len, char *dest, const bool needs_swap) { |
7918f24d NC |
354 | PERL_ARGS_ASSERT_BYTES_TO_UNI; |
355 | ||
228e69a7 | 356 | if (UNLIKELY(needs_swap)) { |
3a88beaa NC |
357 | const U8 *p = start + len; |
358 | while (p-- > start) { | |
55d09dc8 | 359 | append_utf8_from_native_byte(*p, (U8 **) & dest); |
3a88beaa NC |
360 | } |
361 | } else { | |
362 | const U8 * const end = start + len; | |
363 | while (start < end) { | |
55d09dc8 | 364 | append_utf8_from_native_byte(*start, (U8 **) & dest); |
3a88beaa NC |
365 | start++; |
366 | } | |
f337b084 | 367 | } |
64844641 | 368 | return dest; |
f337b084 TH |
369 | } |
370 | ||
3a88beaa | 371 | #define PUSH_BYTES(utf8, cur, buf, len, needs_swap) \ |
230e1fce | 372 | STMT_START { \ |
228e69a7 | 373 | if (UNLIKELY(utf8)) \ |
3a88beaa | 374 | (cur) = S_bytes_to_uni((U8 *) buf, len, (cur), needs_swap); \ |
230e1fce | 375 | else { \ |
228e69a7 | 376 | if (UNLIKELY(needs_swap)) \ |
3a88beaa NC |
377 | S_reverse_copy((char *)(buf), cur, len); \ |
378 | else \ | |
379 | Copy(buf, cur, len, char); \ | |
230e1fce NC |
380 | (cur) += (len); \ |
381 | } \ | |
f337b084 TH |
382 | } STMT_END |
383 | ||
384 | #define GROWING(utf8, cat, start, cur, in_len) \ | |
385 | STMT_START { \ | |
386 | STRLEN glen = (in_len); \ | |
3473cf63 | 387 | if (utf8) glen *= UTF8_EXPAND; \ |
f337b084 | 388 | if ((cur) + glen >= (start) + SvLEN(cat)) { \ |
0bd48802 | 389 | (start) = sv_exp_grow(cat, glen); \ |
f337b084 TH |
390 | (cur) = (start) + SvCUR(cat); \ |
391 | } \ | |
392 | } STMT_END | |
393 | ||
394 | #define PUSH_GROWING_BYTES(utf8, cat, start, cur, buf, in_len) \ | |
395 | STMT_START { \ | |
f7fe979e | 396 | const STRLEN glen = (in_len); \ |
f337b084 | 397 | STRLEN gl = glen; \ |
3473cf63 | 398 | if (utf8) gl *= UTF8_EXPAND; \ |
f337b084 TH |
399 | if ((cur) + gl >= (start) + SvLEN(cat)) { \ |
400 | *cur = '\0'; \ | |
b162af07 | 401 | SvCUR_set((cat), (cur) - (start)); \ |
0bd48802 | 402 | (start) = sv_exp_grow(cat, gl); \ |
f337b084 TH |
403 | (cur) = (start) + SvCUR(cat); \ |
404 | } \ | |
3a88beaa | 405 | PUSH_BYTES(utf8, cur, buf, glen, 0); \ |
f337b084 TH |
406 | } STMT_END |
407 | ||
408 | #define PUSH_BYTE(utf8, s, byte) \ | |
409 | STMT_START { \ | |
410 | if (utf8) { \ | |
f7fe979e | 411 | const U8 au8 = (byte); \ |
3a88beaa | 412 | (s) = S_bytes_to_uni(&au8, 1, (s), 0); \ |
f337b084 TH |
413 | } else *(U8 *)(s)++ = (byte); \ |
414 | } STMT_END | |
415 | ||
416 | /* Only to be used inside a loop (see the break) */ | |
417 | #define NEXT_UNI_VAL(val, cur, str, end, utf8_flags) \ | |
418 | STMT_START { \ | |
419 | STRLEN retlen; \ | |
420 | if (str >= end) break; \ | |
421 | val = utf8n_to_uvchr((U8 *) str, end-str, &retlen, utf8_flags); \ | |
422 | if (retlen == (STRLEN) -1 || retlen == 0) { \ | |
423 | *cur = '\0'; \ | |
424 | Perl_croak(aTHX_ "Malformed UTF-8 string in pack"); \ | |
425 | } \ | |
426 | str += retlen; \ | |
427 | } STMT_END | |
428 | ||
f7fe979e AL |
429 | static const char *_action( const tempsym_t* symptr ) |
430 | { | |
10edeb5d | 431 | return (const char *)(( symptr->flags & FLAG_PACK ) ? "pack" : "unpack"); |
f7fe979e AL |
432 | } |
433 | ||
206947d2 | 434 | /* Returns the sizeof() struct described by pat */ |
028d1f6d | 435 | STATIC I32 |
f337b084 | 436 | S_measure_struct(pTHX_ tempsym_t* symptr) |
206947d2 | 437 | { |
f337b084 | 438 | I32 total = 0; |
206947d2 | 439 | |
7918f24d NC |
440 | PERL_ARGS_ASSERT_MEASURE_STRUCT; |
441 | ||
49704364 | 442 | while (next_symbol(symptr)) { |
f337b084 | 443 | I32 len; |
f7fe979e | 444 | int size; |
f337b084 TH |
445 | |
446 | switch (symptr->howlen) { | |
fc241834 | 447 | case e_star: |
49704364 | 448 | Perl_croak(aTHX_ "Within []-length '*' not allowed in %s", |
f7fe979e | 449 | _action( symptr ) ); |
81d52ecd | 450 | |
f337b084 TH |
451 | default: |
452 | /* e_no_len and e_number */ | |
453 | len = symptr->length; | |
454 | break; | |
49704364 WL |
455 | } |
456 | ||
a7a3cfaa | 457 | size = packprops[TYPE_NO_ENDIANNESS(symptr->code)] & PACK_SIZE_MASK; |
80a13697 | 458 | if (!size) { |
f7fe979e | 459 | int star; |
80a13697 NC |
460 | /* endianness doesn't influence the size of a type */ |
461 | switch(TYPE_NO_ENDIANNESS(symptr->code)) { | |
462 | default: | |
463 | Perl_croak(aTHX_ "Invalid type '%c' in %s", | |
464 | (int)TYPE_NO_MODIFIERS(symptr->code), | |
f7fe979e | 465 | _action( symptr ) ); |
28be1210 TH |
466 | case '.' | TYPE_IS_SHRIEKING: |
467 | case '@' | TYPE_IS_SHRIEKING: | |
80a13697 | 468 | case '@': |
28be1210 | 469 | case '.': |
80a13697 NC |
470 | case '/': |
471 | case 'U': /* XXXX Is it correct? */ | |
472 | case 'w': | |
473 | case 'u': | |
474 | Perl_croak(aTHX_ "Within []-length '%c' not allowed in %s", | |
28be1210 | 475 | (int) TYPE_NO_MODIFIERS(symptr->code), |
f7fe979e | 476 | _action( symptr ) ); |
80a13697 NC |
477 | case '%': |
478 | size = 0; | |
479 | break; | |
480 | case '(': | |
fc241834 RGS |
481 | { |
482 | tempsym_t savsym = *symptr; | |
483 | symptr->patptr = savsym.grpbeg; | |
484 | symptr->patend = savsym.grpend; | |
485 | /* XXXX Theoretically, we need to measure many times at | |
486 | different positions, since the subexpression may contain | |
487 | alignment commands, but be not of aligned length. | |
488 | Need to detect this and croak(). */ | |
489 | size = measure_struct(symptr); | |
490 | *symptr = savsym; | |
491 | break; | |
492 | } | |
80a13697 NC |
493 | case 'X' | TYPE_IS_SHRIEKING: |
494 | /* XXXX Is this useful? Then need to treat MEASURE_BACKWARDS. | |
495 | */ | |
496 | if (!len) /* Avoid division by 0 */ | |
497 | len = 1; | |
498 | len = total % len; /* Assumed: the start is aligned. */ | |
924ba076 | 499 | /* FALLTHROUGH */ |
80a13697 NC |
500 | case 'X': |
501 | size = -1; | |
502 | if (total < len) | |
f7fe979e | 503 | Perl_croak(aTHX_ "'X' outside of string in %s", _action( symptr ) ); |
80a13697 NC |
504 | break; |
505 | case 'x' | TYPE_IS_SHRIEKING: | |
506 | if (!len) /* Avoid division by 0 */ | |
507 | len = 1; | |
508 | star = total % len; /* Assumed: the start is aligned. */ | |
509 | if (star) /* Other portable ways? */ | |
510 | len = len - star; | |
511 | else | |
512 | len = 0; | |
924ba076 | 513 | /* FALLTHROUGH */ |
80a13697 NC |
514 | case 'x': |
515 | case 'A': | |
516 | case 'Z': | |
517 | case 'a': | |
80a13697 NC |
518 | size = 1; |
519 | break; | |
520 | case 'B': | |
521 | case 'b': | |
522 | len = (len + 7)/8; | |
523 | size = 1; | |
524 | break; | |
525 | case 'H': | |
526 | case 'h': | |
527 | len = (len + 1)/2; | |
528 | size = 1; | |
529 | break; | |
78d46eaa | 530 | |
80a13697 NC |
531 | case 'P': |
532 | len = 1; | |
533 | size = sizeof(char*); | |
78d46eaa NC |
534 | break; |
535 | } | |
206947d2 IZ |
536 | } |
537 | total += len * size; | |
538 | } | |
539 | return total; | |
540 | } | |
541 | ||
49704364 WL |
542 | |
543 | /* locate matching closing parenthesis or bracket | |
544 | * returns char pointer to char after match, or NULL | |
545 | */ | |
f7fe979e | 546 | STATIC const char * |
5aaab254 | 547 | S_group_end(pTHX_ const char *patptr, const char *patend, char ender) |
18529408 | 548 | { |
7918f24d NC |
549 | PERL_ARGS_ASSERT_GROUP_END; |
550 | ||
49704364 | 551 | while (patptr < patend) { |
f7fe979e | 552 | const char c = *patptr++; |
49704364 WL |
553 | |
554 | if (isSPACE(c)) | |
555 | continue; | |
556 | else if (c == ender) | |
557 | return patptr-1; | |
558 | else if (c == '#') { | |
559 | while (patptr < patend && *patptr != '\n') | |
560 | patptr++; | |
561 | continue; | |
562 | } else if (c == '(') | |
563 | patptr = group_end(patptr, patend, ')') + 1; | |
564 | else if (c == '[') | |
565 | patptr = group_end(patptr, patend, ']') + 1; | |
18529408 | 566 | } |
49704364 WL |
567 | Perl_croak(aTHX_ "No group ending character '%c' found in template", |
568 | ender); | |
a25b5927 | 569 | NOT_REACHED; /* NOTREACHED */ |
18529408 IZ |
570 | } |
571 | ||
49704364 WL |
572 | |
573 | /* Convert unsigned decimal number to binary. | |
574 | * Expects a pointer to the first digit and address of length variable | |
575 | * Advances char pointer to 1st non-digit char and returns number | |
fc241834 | 576 | */ |
f7fe979e | 577 | STATIC const char * |
5aaab254 | 578 | S_get_num(pTHX_ const char *patptr, I32 *lenptr ) |
49704364 WL |
579 | { |
580 | I32 len = *patptr++ - '0'; | |
7918f24d NC |
581 | |
582 | PERL_ARGS_ASSERT_GET_NUM; | |
583 | ||
49704364 WL |
584 | while (isDIGIT(*patptr)) { |
585 | if (len >= 0x7FFFFFFF/10) | |
586 | Perl_croak(aTHX_ "pack/unpack repeat count overflow"); | |
587 | len = (len * 10) + (*patptr++ - '0'); | |
588 | } | |
589 | *lenptr = len; | |
590 | return patptr; | |
591 | } | |
592 | ||
593 | /* The marvellous template parsing routine: Using state stored in *symptr, | |
594 | * locates next template code and count | |
595 | */ | |
596 | STATIC bool | |
f337b084 | 597 | S_next_symbol(pTHX_ tempsym_t* symptr ) |
18529408 | 598 | { |
f7fe979e | 599 | const char* patptr = symptr->patptr; |
0bcc34c2 | 600 | const char* const patend = symptr->patend; |
49704364 | 601 | |
7918f24d NC |
602 | PERL_ARGS_ASSERT_NEXT_SYMBOL; |
603 | ||
49704364 WL |
604 | symptr->flags &= ~FLAG_SLASH; |
605 | ||
606 | while (patptr < patend) { | |
607 | if (isSPACE(*patptr)) | |
608 | patptr++; | |
609 | else if (*patptr == '#') { | |
610 | patptr++; | |
611 | while (patptr < patend && *patptr != '\n') | |
612 | patptr++; | |
613 | if (patptr < patend) | |
614 | patptr++; | |
615 | } else { | |
fc241834 | 616 | /* We should have found a template code */ |
49704364 | 617 | I32 code = *patptr++ & 0xFF; |
66c611c5 | 618 | U32 inherited_modifiers = 0; |
49704364 WL |
619 | |
620 | if (code == ','){ /* grandfather in commas but with a warning */ | |
621 | if (((symptr->flags & FLAG_COMMA) == 0) && ckWARN(WARN_UNPACK)){ | |
622 | symptr->flags |= FLAG_COMMA; | |
623 | Perl_warner(aTHX_ packWARN(WARN_UNPACK), | |
f7fe979e | 624 | "Invalid type ',' in %s", _action( symptr ) ); |
49704364 WL |
625 | } |
626 | continue; | |
627 | } | |
fc241834 | 628 | |
49704364 | 629 | /* for '(', skip to ')' */ |
fc241834 | 630 | if (code == '(') { |
49704364 WL |
631 | if( isDIGIT(*patptr) || *patptr == '*' || *patptr == '[' ) |
632 | Perl_croak(aTHX_ "()-group starts with a count in %s", | |
f7fe979e | 633 | _action( symptr ) ); |
49704364 WL |
634 | symptr->grpbeg = patptr; |
635 | patptr = 1 + ( symptr->grpend = group_end(patptr, patend, ')') ); | |
636 | if( symptr->level >= MAX_SUB_TEMPLATE_LEVEL ) | |
637 | Perl_croak(aTHX_ "Too deeply nested ()-groups in %s", | |
f7fe979e | 638 | _action( symptr ) ); |
49704364 WL |
639 | } |
640 | ||
66c611c5 MHM |
641 | /* look for group modifiers to inherit */ |
642 | if (TYPE_ENDIANNESS(symptr->flags)) { | |
643 | if (strchr(ENDIANNESS_ALLOWED_TYPES, TYPE_NO_MODIFIERS(code))) | |
644 | inherited_modifiers |= TYPE_ENDIANNESS(symptr->flags); | |
645 | } | |
646 | ||
1109a392 MHM |
647 | /* look for modifiers */ |
648 | while (patptr < patend) { | |
b7787f18 AL |
649 | const char *allowed; |
650 | I32 modifier; | |
1109a392 MHM |
651 | switch (*patptr) { |
652 | case '!': | |
653 | modifier = TYPE_IS_SHRIEKING; | |
f8e5a5db | 654 | allowed = "sSiIlLxXnNvV@."; |
1109a392 MHM |
655 | break; |
656 | case '>': | |
657 | modifier = TYPE_IS_BIG_ENDIAN; | |
66c611c5 | 658 | allowed = ENDIANNESS_ALLOWED_TYPES; |
1109a392 MHM |
659 | break; |
660 | case '<': | |
661 | modifier = TYPE_IS_LITTLE_ENDIAN; | |
66c611c5 | 662 | allowed = ENDIANNESS_ALLOWED_TYPES; |
1109a392 MHM |
663 | break; |
664 | default: | |
b7787f18 AL |
665 | allowed = ""; |
666 | modifier = 0; | |
1109a392 MHM |
667 | break; |
668 | } | |
66c611c5 | 669 | |
1109a392 MHM |
670 | if (modifier == 0) |
671 | break; | |
66c611c5 | 672 | |
1109a392 MHM |
673 | if (!strchr(allowed, TYPE_NO_MODIFIERS(code))) |
674 | Perl_croak(aTHX_ "'%c' allowed only after types %s in %s", *patptr, | |
f7fe979e | 675 | allowed, _action( symptr ) ); |
66c611c5 MHM |
676 | |
677 | if (TYPE_ENDIANNESS(code | modifier) == TYPE_ENDIANNESS_MASK) | |
1109a392 | 678 | Perl_croak(aTHX_ "Can't use both '<' and '>' after type '%c' in %s", |
f7fe979e | 679 | (int) TYPE_NO_MODIFIERS(code), _action( symptr ) ); |
66c611c5 MHM |
680 | else if (TYPE_ENDIANNESS(code | modifier | inherited_modifiers) == |
681 | TYPE_ENDIANNESS_MASK) | |
682 | Perl_croak(aTHX_ "Can't use '%c' in a group with different byte-order in %s", | |
f7fe979e | 683 | *patptr, _action( symptr ) ); |
66c611c5 | 684 | |
a2a5de95 NC |
685 | if ((code & modifier)) { |
686 | Perl_ck_warner(aTHX_ packWARN(WARN_UNPACK), | |
687 | "Duplicate modifier '%c' after '%c' in %s", | |
688 | *patptr, (int) TYPE_NO_MODIFIERS(code), | |
689 | _action( symptr ) ); | |
1109a392 | 690 | } |
66c611c5 | 691 | |
1109a392 MHM |
692 | code |= modifier; |
693 | patptr++; | |
49704364 WL |
694 | } |
695 | ||
66c611c5 MHM |
696 | /* inherit modifiers */ |
697 | code |= inherited_modifiers; | |
698 | ||
fc241834 | 699 | /* look for count and/or / */ |
49704364 WL |
700 | if (patptr < patend) { |
701 | if (isDIGIT(*patptr)) { | |
702 | patptr = get_num( patptr, &symptr->length ); | |
703 | symptr->howlen = e_number; | |
704 | ||
705 | } else if (*patptr == '*') { | |
706 | patptr++; | |
707 | symptr->howlen = e_star; | |
708 | ||
709 | } else if (*patptr == '[') { | |
f7fe979e | 710 | const char* lenptr = ++patptr; |
49704364 WL |
711 | symptr->howlen = e_number; |
712 | patptr = group_end( patptr, patend, ']' ) + 1; | |
713 | /* what kind of [] is it? */ | |
714 | if (isDIGIT(*lenptr)) { | |
715 | lenptr = get_num( lenptr, &symptr->length ); | |
716 | if( *lenptr != ']' ) | |
717 | Perl_croak(aTHX_ "Malformed integer in [] in %s", | |
f7fe979e | 718 | _action( symptr ) ); |
49704364 WL |
719 | } else { |
720 | tempsym_t savsym = *symptr; | |
721 | symptr->patend = patptr-1; | |
722 | symptr->patptr = lenptr; | |
723 | savsym.length = measure_struct(symptr); | |
724 | *symptr = savsym; | |
725 | } | |
726 | } else { | |
727 | symptr->howlen = e_no_len; | |
728 | symptr->length = 1; | |
729 | } | |
730 | ||
731 | /* try to find / */ | |
732 | while (patptr < patend) { | |
733 | if (isSPACE(*patptr)) | |
734 | patptr++; | |
735 | else if (*patptr == '#') { | |
736 | patptr++; | |
737 | while (patptr < patend && *patptr != '\n') | |
738 | patptr++; | |
739 | if (patptr < patend) | |
740 | patptr++; | |
741 | } else { | |
66c611c5 | 742 | if (*patptr == '/') { |
49704364 WL |
743 | symptr->flags |= FLAG_SLASH; |
744 | patptr++; | |
66c611c5 MHM |
745 | if (patptr < patend && |
746 | (isDIGIT(*patptr) || *patptr == '*' || *patptr == '[')) | |
49704364 | 747 | Perl_croak(aTHX_ "'/' does not take a repeat count in %s", |
f7fe979e | 748 | _action( symptr ) ); |
49704364 WL |
749 | } |
750 | break; | |
751 | } | |
18529408 | 752 | } |
49704364 WL |
753 | } else { |
754 | /* at end - no count, no / */ | |
755 | symptr->howlen = e_no_len; | |
756 | symptr->length = 1; | |
757 | } | |
758 | ||
759 | symptr->code = code; | |
fc241834 | 760 | symptr->patptr = patptr; |
49704364 | 761 | return TRUE; |
18529408 | 762 | } |
49704364 | 763 | } |
fc241834 | 764 | symptr->patptr = patptr; |
49704364 | 765 | return FALSE; |
18529408 IZ |
766 | } |
767 | ||
18529408 | 768 | /* |
fc241834 | 769 | There is no way to cleanly handle the case where we should process the |
08ca2aa3 | 770 | string per byte in its upgraded form while it's really in downgraded form |
fc241834 RGS |
771 | (e.g. estimates like strend-s as an upper bound for the number of |
772 | characters left wouldn't work). So if we foresee the need of this | |
773 | (pattern starts with U or contains U0), we want to work on the encoded | |
774 | version of the string. Users are advised to upgrade their pack string | |
08ca2aa3 TH |
775 | themselves if they need to do a lot of unpacks like this on it |
776 | */ | |
fc241834 | 777 | STATIC bool |
08ca2aa3 TH |
778 | need_utf8(const char *pat, const char *patend) |
779 | { | |
780 | bool first = TRUE; | |
7918f24d NC |
781 | |
782 | PERL_ARGS_ASSERT_NEED_UTF8; | |
783 | ||
08ca2aa3 TH |
784 | while (pat < patend) { |
785 | if (pat[0] == '#') { | |
786 | pat++; | |
f7fe979e | 787 | pat = (const char *) memchr(pat, '\n', patend-pat); |
08ca2aa3 TH |
788 | if (!pat) return FALSE; |
789 | } else if (pat[0] == 'U') { | |
790 | if (first || pat[1] == '0') return TRUE; | |
791 | } else first = FALSE; | |
792 | pat++; | |
793 | } | |
794 | return FALSE; | |
795 | } | |
796 | ||
797 | STATIC char | |
798 | first_symbol(const char *pat, const char *patend) { | |
7918f24d NC |
799 | PERL_ARGS_ASSERT_FIRST_SYMBOL; |
800 | ||
08ca2aa3 TH |
801 | while (pat < patend) { |
802 | if (pat[0] != '#') return pat[0]; | |
803 | pat++; | |
f7fe979e | 804 | pat = (const char *) memchr(pat, '\n', patend-pat); |
08ca2aa3 TH |
805 | if (!pat) return 0; |
806 | pat++; | |
807 | } | |
808 | return 0; | |
809 | } | |
810 | ||
811 | /* | |
dcccc8ff KW |
812 | |
813 | =head1 Pack and Unpack | |
814 | ||
7accc089 JH |
815 | =for apidoc unpackstring |
816 | ||
21ebfc7a DM |
817 | The engine implementing the unpack() Perl function. |
818 | ||
819 | Using the template pat..patend, this function unpacks the string | |
820 | s..strend into a number of mortal SVs, which it pushes onto the perl | |
821 | argument (@_) stack (so you will need to issue a C<PUTBACK> before and | |
72d33970 | 822 | C<SPAGAIN> after the call to this function). It returns the number of |
21ebfc7a DM |
823 | pushed elements. |
824 | ||
825 | The strend and patend pointers should point to the byte following the last | |
826 | character of each string. | |
827 | ||
828 | Although this function returns its values on the perl argument stack, it | |
829 | doesn't take any parameters from that stack (and thus in particular | |
830 | there's no need to do a PUSHMARK before calling it, unlike L</call_pv> for | |
831 | example). | |
7accc089 JH |
832 | |
833 | =cut */ | |
834 | ||
835 | I32 | |
f7fe979e | 836 | Perl_unpackstring(pTHX_ const char *pat, const char *patend, const char *s, const char *strend, U32 flags) |
7accc089 | 837 | { |
f7fe979e | 838 | tempsym_t sym; |
08ca2aa3 | 839 | |
7918f24d NC |
840 | PERL_ARGS_ASSERT_UNPACKSTRING; |
841 | ||
f337b084 | 842 | if (flags & FLAG_DO_UTF8) flags |= FLAG_WAS_UTF8; |
08ca2aa3 TH |
843 | else if (need_utf8(pat, patend)) { |
844 | /* We probably should try to avoid this in case a scalar context call | |
845 | wouldn't get to the "U0" */ | |
846 | STRLEN len = strend - s; | |
230e1fce | 847 | s = (char *) bytes_to_utf8((U8 *) s, &len); |
08ca2aa3 TH |
848 | SAVEFREEPV(s); |
849 | strend = s + len; | |
f337b084 | 850 | flags |= FLAG_DO_UTF8; |
08ca2aa3 TH |
851 | } |
852 | ||
f337b084 TH |
853 | if (first_symbol(pat, patend) != 'U' && (flags & FLAG_DO_UTF8)) |
854 | flags |= FLAG_PARSE_UTF8; | |
08ca2aa3 | 855 | |
f7fe979e | 856 | TEMPSYM_INIT(&sym, pat, patend, flags); |
7accc089 JH |
857 | |
858 | return unpack_rec(&sym, s, s, strend, NULL ); | |
859 | } | |
860 | ||
4136a0f7 | 861 | STATIC I32 |
f7fe979e | 862 | S_unpack_rec(pTHX_ tempsym_t* symptr, const char *s, const char *strbeg, const char *strend, const char **new_s ) |
49704364 | 863 | { |
20b7effb | 864 | dSP; |
3297d27d | 865 | SV *sv = NULL; |
f7fe979e | 866 | const I32 start_sp_offset = SP - PL_stack_base; |
49704364 | 867 | howlen_t howlen; |
a6ec74c1 | 868 | I32 checksum = 0; |
92d41999 | 869 | UV cuv = 0; |
a6ec74c1 | 870 | NV cdouble = 0.0; |
f337b084 | 871 | const int bits_in_uv = CHAR_BIT * sizeof(cuv); |
49704364 | 872 | bool beyond = FALSE; |
21c16052 | 873 | bool explicit_length; |
9e27e96a | 874 | const bool unpack_only_one = (symptr->flags & FLAG_UNPACK_ONLY_ONE) != 0; |
f337b084 | 875 | bool utf8 = (symptr->flags & FLAG_PARSE_UTF8) ? 1 : 0; |
7918f24d NC |
876 | |
877 | PERL_ARGS_ASSERT_UNPACK_REC; | |
878 | ||
28be1210 | 879 | symptr->strbeg = s - strbeg; |
49704364 | 880 | |
49704364 | 881 | while (next_symbol(symptr)) { |
a7a3cfaa | 882 | packprops_t props; |
9e27e96a | 883 | I32 len; |
f337b084 | 884 | I32 datumtype = symptr->code; |
a1219b5e | 885 | bool needs_swap; |
206947d2 | 886 | /* do first one only unless in list context |
08ca2aa3 | 887 | / is implemented by unpacking the count, then popping it from the |
206947d2 | 888 | stack, so must check that we're not in the middle of a / */ |
49704364 | 889 | if ( unpack_only_one |
206947d2 | 890 | && (SP - PL_stack_base == start_sp_offset + 1) |
49704364 | 891 | && (datumtype != '/') ) /* XXX can this be omitted */ |
206947d2 | 892 | break; |
49704364 | 893 | |
f337b084 | 894 | switch (howlen = symptr->howlen) { |
fc241834 RGS |
895 | case e_star: |
896 | len = strend - strbeg; /* long enough */ | |
49704364 | 897 | break; |
f337b084 TH |
898 | default: |
899 | /* e_no_len and e_number */ | |
900 | len = symptr->length; | |
901 | break; | |
49704364 | 902 | } |
18529408 | 903 | |
21c16052 | 904 | explicit_length = TRUE; |
a6ec74c1 | 905 | redo_switch: |
49704364 | 906 | beyond = s >= strend; |
a7a3cfaa TH |
907 | |
908 | props = packprops[TYPE_NO_ENDIANNESS(datumtype)]; | |
909 | if (props) { | |
910 | /* props nonzero means we can process this letter. */ | |
9e27e96a AL |
911 | const long size = props & PACK_SIZE_MASK; |
912 | const long howmany = (strend - s) / size; | |
a7a3cfaa TH |
913 | if (len > howmany) |
914 | len = howmany; | |
915 | ||
916 | if (!checksum || (props & PACK_SIZE_CANNOT_CSUM)) { | |
917 | if (len && unpack_only_one) len = 1; | |
918 | EXTEND(SP, len); | |
919 | EXTEND_MORTAL(len); | |
78d46eaa NC |
920 | } |
921 | } | |
a7a3cfaa | 922 | |
a1219b5e NC |
923 | needs_swap = NEEDS_SWAP(datumtype); |
924 | ||
1109a392 | 925 | switch(TYPE_NO_ENDIANNESS(datumtype)) { |
a6ec74c1 | 926 | default: |
1109a392 | 927 | Perl_croak(aTHX_ "Invalid type '%c' in unpack", (int)TYPE_NO_MODIFIERS(datumtype) ); |
49704364 | 928 | |
a6ec74c1 | 929 | case '%': |
49704364 | 930 | if (howlen == e_no_len) |
18529408 | 931 | len = 16; /* len is not specified */ |
a6ec74c1 | 932 | checksum = len; |
92d41999 | 933 | cuv = 0; |
a6ec74c1 | 934 | cdouble = 0; |
18529408 | 935 | continue; |
81d52ecd | 936 | |
18529408 IZ |
937 | case '(': |
938 | { | |
49704364 | 939 | tempsym_t savsym = *symptr; |
9e27e96a | 940 | const U32 group_modifiers = TYPE_MODIFIERS(datumtype & ~symptr->flags); |
66c611c5 | 941 | symptr->flags |= group_modifiers; |
49704364 | 942 | symptr->patend = savsym.grpend; |
28be1210 | 943 | symptr->previous = &savsym; |
49704364 | 944 | symptr->level++; |
18529408 | 945 | PUTBACK; |
c6f750d1 | 946 | if (len && unpack_only_one) len = 1; |
18529408 | 947 | while (len--) { |
49704364 | 948 | symptr->patptr = savsym.grpbeg; |
f337b084 TH |
949 | if (utf8) symptr->flags |= FLAG_PARSE_UTF8; |
950 | else symptr->flags &= ~FLAG_PARSE_UTF8; | |
08ca2aa3 TH |
951 | unpack_rec(symptr, s, strbeg, strend, &s); |
952 | if (s == strend && savsym.howlen == e_star) | |
49704364 | 953 | break; /* No way to continue */ |
18529408 IZ |
954 | } |
955 | SPAGAIN; | |
28be1210 | 956 | savsym.flags = symptr->flags & ~group_modifiers; |
49704364 | 957 | *symptr = savsym; |
18529408 IZ |
958 | break; |
959 | } | |
28be1210 | 960 | case '.' | TYPE_IS_SHRIEKING: |
28be1210 | 961 | case '.': { |
9e27e96a | 962 | const char *from; |
28be1210 | 963 | SV *sv; |
9e27e96a | 964 | const bool u8 = utf8 && !(datumtype & TYPE_IS_SHRIEKING); |
28be1210 TH |
965 | if (howlen == e_star) from = strbeg; |
966 | else if (len <= 0) from = s; | |
967 | else { | |
968 | tempsym_t *group = symptr; | |
969 | ||
970 | while (--len && group) group = group->previous; | |
971 | from = group ? strbeg + group->strbeg : strbeg; | |
972 | } | |
973 | sv = from <= s ? | |
00646304 CB |
974 | newSVuv( u8 ? (UV) utf8_length((const U8*)from, (const U8*)s) : (UV) (s-from)) : |
975 | newSViv(-(u8 ? (IV) utf8_length((const U8*)s, (const U8*)from) : (IV) (from-s))); | |
6e449a3a | 976 | mXPUSHs(sv); |
28be1210 TH |
977 | break; |
978 | } | |
28be1210 | 979 | case '@' | TYPE_IS_SHRIEKING: |
a6ec74c1 | 980 | case '@': |
28be1210 | 981 | s = strbeg + symptr->strbeg; |
28be1210 | 982 | if (utf8 && !(datumtype & TYPE_IS_SHRIEKING)) |
28be1210 | 983 | { |
08ca2aa3 TH |
984 | while (len > 0) { |
985 | if (s >= strend) | |
986 | Perl_croak(aTHX_ "'@' outside of string in unpack"); | |
987 | s += UTF8SKIP(s); | |
988 | len--; | |
989 | } | |
990 | if (s > strend) | |
991 | Perl_croak(aTHX_ "'@' outside of string with malformed UTF-8 in unpack"); | |
992 | } else { | |
28be1210 | 993 | if (strend-s < len) |
fc241834 | 994 | Perl_croak(aTHX_ "'@' outside of string in unpack"); |
28be1210 | 995 | s += len; |
08ca2aa3 | 996 | } |
a6ec74c1 | 997 | break; |
62f95557 IZ |
998 | case 'X' | TYPE_IS_SHRIEKING: |
999 | if (!len) /* Avoid division by 0 */ | |
1000 | len = 1; | |
08ca2aa3 | 1001 | if (utf8) { |
f7fe979e | 1002 | const char *hop, *last; |
f337b084 TH |
1003 | I32 l = len; |
1004 | hop = last = strbeg; | |
1005 | while (hop < s) { | |
1006 | hop += UTF8SKIP(hop); | |
1007 | if (--l == 0) { | |
08ca2aa3 | 1008 | last = hop; |
f337b084 TH |
1009 | l = len; |
1010 | } | |
fc241834 | 1011 | } |
f337b084 TH |
1012 | if (last > s) |
1013 | Perl_croak(aTHX_ "Malformed UTF-8 string in unpack"); | |
08ca2aa3 TH |
1014 | s = last; |
1015 | break; | |
f337b084 TH |
1016 | } |
1017 | len = (s - strbeg) % len; | |
924ba076 | 1018 | /* FALLTHROUGH */ |
a6ec74c1 | 1019 | case 'X': |
08ca2aa3 TH |
1020 | if (utf8) { |
1021 | while (len > 0) { | |
1022 | if (s <= strbeg) | |
1023 | Perl_croak(aTHX_ "'X' outside of string in unpack"); | |
f337b084 | 1024 | while (--s, UTF8_IS_CONTINUATION(*s)) { |
08ca2aa3 TH |
1025 | if (s <= strbeg) |
1026 | Perl_croak(aTHX_ "'X' outside of string in unpack"); | |
1027 | } | |
1028 | len--; | |
1029 | } | |
1030 | } else { | |
fc241834 RGS |
1031 | if (len > s - strbeg) |
1032 | Perl_croak(aTHX_ "'X' outside of string in unpack" ); | |
1033 | s -= len; | |
08ca2aa3 | 1034 | } |
a6ec74c1 | 1035 | break; |
9e27e96a AL |
1036 | case 'x' | TYPE_IS_SHRIEKING: { |
1037 | I32 ai32; | |
62f95557 IZ |
1038 | if (!len) /* Avoid division by 0 */ |
1039 | len = 1; | |
230e1fce NC |
1040 | if (utf8) ai32 = utf8_length((U8 *) strbeg, (U8 *) s) % len; |
1041 | else ai32 = (s - strbeg) % len; | |
08ca2aa3 TH |
1042 | if (ai32 == 0) break; |
1043 | len -= ai32; | |
9e27e96a | 1044 | } |
924ba076 | 1045 | /* FALLTHROUGH */ |
a6ec74c1 | 1046 | case 'x': |
08ca2aa3 TH |
1047 | if (utf8) { |
1048 | while (len>0) { | |
1049 | if (s >= strend) | |
1050 | Perl_croak(aTHX_ "'x' outside of string in unpack"); | |
1051 | s += UTF8SKIP(s); | |
1052 | len--; | |
1053 | } | |
1054 | } else { | |
fc241834 RGS |
1055 | if (len > strend - s) |
1056 | Perl_croak(aTHX_ "'x' outside of string in unpack"); | |
1057 | s += len; | |
f337b084 | 1058 | } |
a6ec74c1 JH |
1059 | break; |
1060 | case '/': | |
49704364 | 1061 | Perl_croak(aTHX_ "'/' must follow a numeric type in unpack"); |
81d52ecd | 1062 | |
a6ec74c1 JH |
1063 | case 'A': |
1064 | case 'Z': | |
1065 | case 'a': | |
08ca2aa3 TH |
1066 | if (checksum) { |
1067 | /* Preliminary length estimate is assumed done in 'W' */ | |
1068 | if (len > strend - s) len = strend - s; | |
1069 | goto W_checksum; | |
1070 | } | |
1071 | if (utf8) { | |
1072 | I32 l; | |
f7fe979e | 1073 | const char *hop; |
08ca2aa3 TH |
1074 | for (l=len, hop=s; l>0; l--, hop += UTF8SKIP(hop)) { |
1075 | if (hop >= strend) { | |
1076 | if (hop > strend) | |
1077 | Perl_croak(aTHX_ "Malformed UTF-8 string in unpack"); | |
1078 | break; | |
fc241834 | 1079 | } |
a6ec74c1 | 1080 | } |
08ca2aa3 TH |
1081 | if (hop > strend) |
1082 | Perl_croak(aTHX_ "Malformed UTF-8 string in unpack"); | |
1083 | len = hop - s; | |
1084 | } else if (len > strend - s) | |
1085 | len = strend - s; | |
1086 | ||
1087 | if (datumtype == 'Z') { | |
1088 | /* 'Z' strips stuff after first null */ | |
f7fe979e | 1089 | const char *ptr, *end; |
f337b084 TH |
1090 | end = s + len; |
1091 | for (ptr = s; ptr < end; ptr++) if (*ptr == 0) break; | |
08ca2aa3 TH |
1092 | sv = newSVpvn(s, ptr-s); |
1093 | if (howlen == e_star) /* exact for 'Z*' */ | |
1094 | len = ptr-s + (ptr != strend ? 1 : 0); | |
1095 | } else if (datumtype == 'A') { | |
1096 | /* 'A' strips both nulls and spaces */ | |
f7fe979e | 1097 | const char *ptr; |
18bdf90a TH |
1098 | if (utf8 && (symptr->flags & FLAG_WAS_UTF8)) { |
1099 | for (ptr = s+len-1; ptr >= s; ptr--) | |
1100 | if (*ptr != 0 && !UTF8_IS_CONTINUATION(*ptr) && | |
76a77b1b | 1101 | !isSPACE_utf8(ptr)) break; |
18bdf90a TH |
1102 | if (ptr >= s) ptr += UTF8SKIP(ptr); |
1103 | else ptr++; | |
28be1210 | 1104 | if (ptr > s+len) |
18bdf90a TH |
1105 | Perl_croak(aTHX_ "Malformed UTF-8 string in unpack"); |
1106 | } else { | |
1107 | for (ptr = s+len-1; ptr >= s; ptr--) | |
1108 | if (*ptr != 0 && !isSPACE(*ptr)) break; | |
1109 | ptr++; | |
1110 | } | |
08ca2aa3 TH |
1111 | sv = newSVpvn(s, ptr-s); |
1112 | } else sv = newSVpvn(s, len); | |
1113 | ||
1114 | if (utf8) { | |
1115 | SvUTF8_on(sv); | |
1116 | /* Undo any upgrade done due to need_utf8() */ | |
f337b084 | 1117 | if (!(symptr->flags & FLAG_WAS_UTF8)) |
08ca2aa3 | 1118 | sv_utf8_downgrade(sv, 0); |
a6ec74c1 | 1119 | } |
6e449a3a | 1120 | mXPUSHs(sv); |
08ca2aa3 | 1121 | s += len; |
a6ec74c1 JH |
1122 | break; |
1123 | case 'B': | |
08ca2aa3 TH |
1124 | case 'b': { |
1125 | char *str; | |
49704364 | 1126 | if (howlen == e_star || len > (strend - s) * 8) |
a6ec74c1 JH |
1127 | len = (strend - s) * 8; |
1128 | if (checksum) { | |
f337b084 | 1129 | if (utf8) |
08ca2aa3 | 1130 | while (len >= 8 && s < strend) { |
f337b084 | 1131 | cuv += PL_bitcount[uni_to_byte(aTHX_ &s, strend, datumtype)]; |
08ca2aa3 TH |
1132 | len -= 8; |
1133 | } | |
f337b084 | 1134 | else |
fc241834 | 1135 | while (len >= 8) { |
08ca2aa3 | 1136 | cuv += PL_bitcount[*(U8 *)s++]; |
fc241834 RGS |
1137 | len -= 8; |
1138 | } | |
08ca2aa3 TH |
1139 | if (len && s < strend) { |
1140 | U8 bits; | |
f337b084 TH |
1141 | bits = SHIFT_BYTE(utf8, s, strend, datumtype); |
1142 | if (datumtype == 'b') | |
a6ec74c1 | 1143 | while (len-- > 0) { |
92d41999 | 1144 | if (bits & 1) cuv++; |
a6ec74c1 JH |
1145 | bits >>= 1; |
1146 | } | |
f337b084 | 1147 | else |
a6ec74c1 | 1148 | while (len-- > 0) { |
08ca2aa3 | 1149 | if (bits & 0x80) cuv++; |
a6ec74c1 JH |
1150 | bits <<= 1; |
1151 | } | |
fc241834 | 1152 | } |
a6ec74c1 JH |
1153 | break; |
1154 | } | |
08ca2aa3 | 1155 | |
561b68a9 | 1156 | sv = sv_2mortal(newSV(len ? len : 1)); |
a6ec74c1 JH |
1157 | SvPOK_on(sv); |
1158 | str = SvPVX(sv); | |
1159 | if (datumtype == 'b') { | |
f337b084 | 1160 | U8 bits = 0; |
f7fe979e | 1161 | const I32 ai32 = len; |
08ca2aa3 TH |
1162 | for (len = 0; len < ai32; len++) { |
1163 | if (len & 7) bits >>= 1; | |
1164 | else if (utf8) { | |
1165 | if (s >= strend) break; | |
f337b084 | 1166 | bits = uni_to_byte(aTHX_ &s, strend, datumtype); |
08ca2aa3 TH |
1167 | } else bits = *(U8 *) s++; |
1168 | *str++ = bits & 1 ? '1' : '0'; | |
a6ec74c1 | 1169 | } |
08ca2aa3 | 1170 | } else { |
f337b084 | 1171 | U8 bits = 0; |
f7fe979e | 1172 | const I32 ai32 = len; |
08ca2aa3 TH |
1173 | for (len = 0; len < ai32; len++) { |
1174 | if (len & 7) bits <<= 1; | |
1175 | else if (utf8) { | |
1176 | if (s >= strend) break; | |
f337b084 | 1177 | bits = uni_to_byte(aTHX_ &s, strend, datumtype); |
08ca2aa3 TH |
1178 | } else bits = *(U8 *) s++; |
1179 | *str++ = bits & 0x80 ? '1' : '0'; | |
a6ec74c1 JH |
1180 | } |
1181 | } | |
1182 | *str = '\0'; | |
aa07b2f6 | 1183 | SvCUR_set(sv, str - SvPVX_const(sv)); |
08ca2aa3 | 1184 | XPUSHs(sv); |
a6ec74c1 | 1185 | break; |
08ca2aa3 | 1186 | } |
a6ec74c1 | 1187 | case 'H': |
08ca2aa3 | 1188 | case 'h': { |
3297d27d | 1189 | char *str = NULL; |
fc241834 | 1190 | /* Preliminary length estimate, acceptable for utf8 too */ |
49704364 | 1191 | if (howlen == e_star || len > (strend - s) * 2) |
a6ec74c1 | 1192 | len = (strend - s) * 2; |
858fe5e1 TC |
1193 | if (!checksum) { |
1194 | sv = sv_2mortal(newSV(len ? len : 1)); | |
1195 | SvPOK_on(sv); | |
1196 | str = SvPVX(sv); | |
1197 | } | |
a6ec74c1 | 1198 | if (datumtype == 'h') { |
f337b084 | 1199 | U8 bits = 0; |
9e27e96a | 1200 | I32 ai32 = len; |
fc241834 RGS |
1201 | for (len = 0; len < ai32; len++) { |
1202 | if (len & 1) bits >>= 4; | |
1203 | else if (utf8) { | |
1204 | if (s >= strend) break; | |
f337b084 | 1205 | bits = uni_to_byte(aTHX_ &s, strend, datumtype); |
fc241834 | 1206 | } else bits = * (U8 *) s++; |
858fe5e1 TC |
1207 | if (!checksum) |
1208 | *str++ = PL_hexdigit[bits & 15]; | |
a6ec74c1 | 1209 | } |
08ca2aa3 | 1210 | } else { |
f337b084 | 1211 | U8 bits = 0; |
f7fe979e | 1212 | const I32 ai32 = len; |
08ca2aa3 TH |
1213 | for (len = 0; len < ai32; len++) { |
1214 | if (len & 1) bits <<= 4; | |
1215 | else if (utf8) { | |
1216 | if (s >= strend) break; | |
f337b084 | 1217 | bits = uni_to_byte(aTHX_ &s, strend, datumtype); |
08ca2aa3 | 1218 | } else bits = *(U8 *) s++; |
858fe5e1 TC |
1219 | if (!checksum) |
1220 | *str++ = PL_hexdigit[(bits >> 4) & 15]; | |
a6ec74c1 JH |
1221 | } |
1222 | } | |
858fe5e1 TC |
1223 | if (!checksum) { |
1224 | *str = '\0'; | |
1225 | SvCUR_set(sv, str - SvPVX_const(sv)); | |
1226 | XPUSHs(sv); | |
1227 | } | |
a6ec74c1 | 1228 | break; |
08ca2aa3 | 1229 | } |
1651fc44 ML |
1230 | case 'C': |
1231 | if (len == 0) { | |
1232 | if (explicit_length) | |
1233 | /* Switch to "character" mode */ | |
1234 | utf8 = (symptr->flags & FLAG_DO_UTF8) ? 1 : 0; | |
1235 | break; | |
1236 | } | |
924ba076 | 1237 | /* FALLTHROUGH */ |
a6ec74c1 | 1238 | case 'c': |
1651fc44 ML |
1239 | while (len-- > 0 && s < strend) { |
1240 | int aint; | |
1241 | if (utf8) | |
1242 | { | |
1243 | STRLEN retlen; | |
1244 | aint = utf8n_to_uvchr((U8 *) s, strend-s, &retlen, | |
1245 | ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY); | |
1246 | if (retlen == (STRLEN) -1 || retlen == 0) | |
1247 | Perl_croak(aTHX_ "Malformed UTF-8 string in unpack"); | |
1248 | s += retlen; | |
1249 | } | |
1250 | else | |
1251 | aint = *(U8 *)(s)++; | |
1252 | if (aint >= 128 && datumtype != 'C') /* fake up signed chars */ | |
73cb7263 | 1253 | aint -= 256; |
08ca2aa3 | 1254 | if (!checksum) |
6e449a3a | 1255 | mPUSHi(aint); |
73cb7263 NC |
1256 | else if (checksum > bits_in_uv) |
1257 | cdouble += (NV)aint; | |
1258 | else | |
1259 | cuv += aint; | |
a6ec74c1 JH |
1260 | } |
1261 | break; | |
08ca2aa3 TH |
1262 | case 'W': |
1263 | W_checksum: | |
1651fc44 | 1264 | if (utf8) { |
08ca2aa3 | 1265 | while (len-- > 0 && s < strend) { |
08ca2aa3 | 1266 | STRLEN retlen; |
f7fe979e | 1267 | const UV val = utf8n_to_uvchr((U8 *) s, strend-s, &retlen, |
f337b084 | 1268 | ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY); |
08ca2aa3 TH |
1269 | if (retlen == (STRLEN) -1 || retlen == 0) |
1270 | Perl_croak(aTHX_ "Malformed UTF-8 string in unpack"); | |
1271 | s += retlen; | |
1272 | if (!checksum) | |
6e449a3a | 1273 | mPUSHu(val); |
08ca2aa3 TH |
1274 | else if (checksum > bits_in_uv) |
1275 | cdouble += (NV) val; | |
d6d3e8bd | 1276 | else |
08ca2aa3 | 1277 | cuv += val; |
fc241834 | 1278 | } |
08ca2aa3 | 1279 | } else if (!checksum) |
a6ec74c1 | 1280 | while (len-- > 0) { |
f7fe979e | 1281 | const U8 ch = *(U8 *) s++; |
6e449a3a | 1282 | mPUSHu(ch); |
a6ec74c1 | 1283 | } |
08ca2aa3 TH |
1284 | else if (checksum > bits_in_uv) |
1285 | while (len-- > 0) cdouble += (NV) *(U8 *) s++; | |
1286 | else | |
1287 | while (len-- > 0) cuv += *(U8 *) s++; | |
a6ec74c1 JH |
1288 | break; |
1289 | case 'U': | |
35bcd338 | 1290 | if (len == 0) { |
c5333953 | 1291 | if (explicit_length && howlen != e_star) { |
08ca2aa3 | 1292 | /* Switch to "bytes in UTF-8" mode */ |
f337b084 | 1293 | if (symptr->flags & FLAG_DO_UTF8) utf8 = 0; |
08ca2aa3 TH |
1294 | else |
1295 | /* Should be impossible due to the need_utf8() test */ | |
1296 | Perl_croak(aTHX_ "U0 mode on a byte string"); | |
1297 | } | |
35bcd338 JH |
1298 | break; |
1299 | } | |
08ca2aa3 | 1300 | if (len > strend - s) len = strend - s; |
fc241834 | 1301 | if (!checksum) { |
08ca2aa3 TH |
1302 | if (len && unpack_only_one) len = 1; |
1303 | EXTEND(SP, len); | |
1304 | EXTEND_MORTAL(len); | |
fc241834 | 1305 | } |
08ca2aa3 TH |
1306 | while (len-- > 0 && s < strend) { |
1307 | STRLEN retlen; | |
1308 | UV auv; | |
1309 | if (utf8) { | |
1310 | U8 result[UTF8_MAXLEN]; | |
f7fe979e | 1311 | const char *ptr = s; |
08ca2aa3 | 1312 | STRLEN len; |
08ca2aa3 TH |
1313 | /* Bug: warns about bad utf8 even if we are short on bytes |
1314 | and will break out of the loop */ | |
230e1fce NC |
1315 | if (!uni_to_bytes(aTHX_ &ptr, strend, (char *) result, 1, |
1316 | 'U')) | |
08ca2aa3 TH |
1317 | break; |
1318 | len = UTF8SKIP(result); | |
fc241834 | 1319 | if (!uni_to_bytes(aTHX_ &ptr, strend, |
230e1fce | 1320 | (char *) &result[1], len-1, 'U')) break; |
c80e42f3 | 1321 | auv = utf8n_to_uvchr(result, len, &retlen, UTF8_ALLOW_DEFAULT); |
08ca2aa3 TH |
1322 | s = ptr; |
1323 | } else { | |
c80e42f3 | 1324 | auv = utf8n_to_uvchr((U8*)s, strend - s, &retlen, UTF8_ALLOW_DEFAULT); |
08ca2aa3 TH |
1325 | if (retlen == (STRLEN) -1 || retlen == 0) |
1326 | Perl_croak(aTHX_ "Malformed UTF-8 string in unpack"); | |
1327 | s += retlen; | |
1328 | } | |
1329 | if (!checksum) | |
6e449a3a | 1330 | mPUSHu(auv); |
73cb7263 | 1331 | else if (checksum > bits_in_uv) |
08ca2aa3 | 1332 | cdouble += (NV) auv; |
73cb7263 | 1333 | else |
08ca2aa3 | 1334 | cuv += auv; |
a6ec74c1 JH |
1335 | } |
1336 | break; | |
49704364 WL |
1337 | case 's' | TYPE_IS_SHRIEKING: |
1338 | #if SHORTSIZE != SIZE16 | |
73cb7263 | 1339 | while (len-- > 0) { |
08ca2aa3 | 1340 | short ashort; |
aaec8192 | 1341 | SHIFT_VAR(utf8, s, strend, ashort, datumtype, needs_swap); |
08ca2aa3 | 1342 | if (!checksum) |
6e449a3a | 1343 | mPUSHi(ashort); |
73cb7263 NC |
1344 | else if (checksum > bits_in_uv) |
1345 | cdouble += (NV)ashort; | |
1346 | else | |
1347 | cuv += ashort; | |
49704364 WL |
1348 | } |
1349 | break; | |
1350 | #else | |
924ba076 | 1351 | /* FALLTHROUGH */ |
a6ec74c1 | 1352 | #endif |
49704364 | 1353 | case 's': |
73cb7263 | 1354 | while (len-- > 0) { |
08ca2aa3 TH |
1355 | I16 ai16; |
1356 | ||
1357 | #if U16SIZE > SIZE16 | |
1358 | ai16 = 0; | |
1359 | #endif | |
aaec8192 | 1360 | SHIFT16(utf8, s, strend, &ai16, datumtype, needs_swap); |
1109a392 | 1361 | #if U16SIZE > SIZE16 |
73cb7263 NC |
1362 | if (ai16 > 32767) |
1363 | ai16 -= 65536; | |
a6ec74c1 | 1364 | #endif |
08ca2aa3 | 1365 | if (!checksum) |
6e449a3a | 1366 | mPUSHi(ai16); |
73cb7263 NC |
1367 | else if (checksum > bits_in_uv) |
1368 | cdouble += (NV)ai16; | |
1369 | else | |
1370 | cuv += ai16; | |
a6ec74c1 JH |
1371 | } |
1372 | break; | |
49704364 WL |
1373 | case 'S' | TYPE_IS_SHRIEKING: |
1374 | #if SHORTSIZE != SIZE16 | |
73cb7263 | 1375 | while (len-- > 0) { |
08ca2aa3 | 1376 | unsigned short aushort; |
aaec8192 NC |
1377 | SHIFT_VAR(utf8, s, strend, aushort, datumtype, needs_swap, |
1378 | needs_swap); | |
08ca2aa3 | 1379 | if (!checksum) |
6e449a3a | 1380 | mPUSHu(aushort); |
73cb7263 NC |
1381 | else if (checksum > bits_in_uv) |
1382 | cdouble += (NV)aushort; | |
1383 | else | |
1384 | cuv += aushort; | |
49704364 WL |
1385 | } |
1386 | break; | |
1387 | #else | |
924ba076 | 1388 | /* FALLTHROUGH */ |
49704364 | 1389 | #endif |
a6ec74c1 JH |
1390 | case 'v': |
1391 | case 'n': | |
1392 | case 'S': | |
73cb7263 | 1393 | while (len-- > 0) { |
08ca2aa3 TH |
1394 | U16 au16; |
1395 | #if U16SIZE > SIZE16 | |
1396 | au16 = 0; | |
1397 | #endif | |
aaec8192 | 1398 | SHIFT16(utf8, s, strend, &au16, datumtype, needs_swap); |
73cb7263 NC |
1399 | if (datumtype == 'n') |
1400 | au16 = PerlSock_ntohs(au16); | |
73cb7263 NC |
1401 | if (datumtype == 'v') |
1402 | au16 = vtohs(au16); | |
08ca2aa3 | 1403 | if (!checksum) |
6e449a3a | 1404 | mPUSHu(au16); |
73cb7263 | 1405 | else if (checksum > bits_in_uv) |
f337b084 | 1406 | cdouble += (NV) au16; |
73cb7263 NC |
1407 | else |
1408 | cuv += au16; | |
a6ec74c1 JH |
1409 | } |
1410 | break; | |
068bd2e7 MHM |
1411 | case 'v' | TYPE_IS_SHRIEKING: |
1412 | case 'n' | TYPE_IS_SHRIEKING: | |
73cb7263 | 1413 | while (len-- > 0) { |
08ca2aa3 TH |
1414 | I16 ai16; |
1415 | # if U16SIZE > SIZE16 | |
1416 | ai16 = 0; | |
1417 | # endif | |
aaec8192 | 1418 | SHIFT16(utf8, s, strend, &ai16, datumtype, needs_swap); |
e396d235 NC |
1419 | /* There should never be any byte-swapping here. */ |
1420 | assert(!TYPE_ENDIANNESS(datumtype)); | |
73cb7263 | 1421 | if (datumtype == ('n' | TYPE_IS_SHRIEKING)) |
08ca2aa3 | 1422 | ai16 = (I16) PerlSock_ntohs((U16) ai16); |
73cb7263 | 1423 | if (datumtype == ('v' | TYPE_IS_SHRIEKING)) |
08ca2aa3 | 1424 | ai16 = (I16) vtohs((U16) ai16); |
08ca2aa3 | 1425 | if (!checksum) |
6e449a3a | 1426 | mPUSHi(ai16); |
73cb7263 | 1427 | else if (checksum > bits_in_uv) |
08ca2aa3 | 1428 | cdouble += (NV) ai16; |
73cb7263 NC |
1429 | else |
1430 | cuv += ai16; | |
068bd2e7 MHM |
1431 | } |
1432 | break; | |
a6ec74c1 | 1433 | case 'i': |
49704364 | 1434 | case 'i' | TYPE_IS_SHRIEKING: |
73cb7263 | 1435 | while (len-- > 0) { |
08ca2aa3 | 1436 | int aint; |
aaec8192 | 1437 | SHIFT_VAR(utf8, s, strend, aint, datumtype, needs_swap); |
08ca2aa3 | 1438 | if (!checksum) |
6e449a3a | 1439 | mPUSHi(aint); |
73cb7263 NC |
1440 | else if (checksum > bits_in_uv) |
1441 | cdouble += (NV)aint; | |
1442 | else | |
1443 | cuv += aint; | |
a6ec74c1 JH |
1444 | } |
1445 | break; | |
1446 | case 'I': | |
49704364 | 1447 | case 'I' | TYPE_IS_SHRIEKING: |
73cb7263 | 1448 | while (len-- > 0) { |
08ca2aa3 | 1449 | unsigned int auint; |
aaec8192 | 1450 | SHIFT_VAR(utf8, s, strend, auint, datumtype, needs_swap); |
08ca2aa3 | 1451 | if (!checksum) |
6e449a3a | 1452 | mPUSHu(auint); |
73cb7263 NC |
1453 | else if (checksum > bits_in_uv) |
1454 | cdouble += (NV)auint; | |
1455 | else | |
1456 | cuv += auint; | |
a6ec74c1 JH |
1457 | } |
1458 | break; | |
92d41999 | 1459 | case 'j': |
73cb7263 | 1460 | while (len-- > 0) { |
08ca2aa3 | 1461 | IV aiv; |
aaec8192 | 1462 | SHIFT_VAR(utf8, s, strend, aiv, datumtype, needs_swap); |
08ca2aa3 | 1463 | if (!checksum) |
6e449a3a | 1464 | mPUSHi(aiv); |
73cb7263 NC |
1465 | else if (checksum > bits_in_uv) |
1466 | cdouble += (NV)aiv; | |
1467 | else | |
1468 | cuv += aiv; | |
92d41999 JH |
1469 | } |
1470 | break; | |
1471 | case 'J': | |
73cb7263 | 1472 | while (len-- > 0) { |
08ca2aa3 | 1473 | UV auv; |
aaec8192 | 1474 | SHIFT_VAR(utf8, s, strend, auv, datumtype, needs_swap); |
08ca2aa3 | 1475 | if (!checksum) |
6e449a3a | 1476 | mPUSHu(auv); |
73cb7263 NC |
1477 | else if (checksum > bits_in_uv) |
1478 | cdouble += (NV)auv; | |
1479 | else | |
1480 | cuv += auv; | |
92d41999 JH |
1481 | } |
1482 | break; | |
49704364 WL |
1483 | case 'l' | TYPE_IS_SHRIEKING: |
1484 | #if LONGSIZE != SIZE32 | |
73cb7263 | 1485 | while (len-- > 0) { |
08ca2aa3 | 1486 | long along; |
aaec8192 | 1487 | SHIFT_VAR(utf8, s, strend, along, datumtype, needs_swap); |
08ca2aa3 | 1488 | if (!checksum) |
6e449a3a | 1489 | mPUSHi(along); |
73cb7263 NC |
1490 | else if (checksum > bits_in_uv) |
1491 | cdouble += (NV)along; | |
1492 | else | |
1493 | cuv += along; | |
49704364 WL |
1494 | } |
1495 | break; | |
1496 | #else | |
924ba076 | 1497 | /* FALLTHROUGH */ |
a6ec74c1 | 1498 | #endif |
49704364 | 1499 | case 'l': |
73cb7263 | 1500 | while (len-- > 0) { |
08ca2aa3 TH |
1501 | I32 ai32; |
1502 | #if U32SIZE > SIZE32 | |
1503 | ai32 = 0; | |
1504 | #endif | |
aaec8192 | 1505 | SHIFT32(utf8, s, strend, &ai32, datumtype, needs_swap); |
25a9bd2a | 1506 | #if U32SIZE > SIZE32 |
08ca2aa3 | 1507 | if (ai32 > 2147483647) ai32 -= 4294967296; |
a6ec74c1 | 1508 | #endif |
08ca2aa3 | 1509 | if (!checksum) |
6e449a3a | 1510 | mPUSHi(ai32); |
73cb7263 NC |
1511 | else if (checksum > bits_in_uv) |
1512 | cdouble += (NV)ai32; | |
1513 | else | |
1514 | cuv += ai32; | |
a6ec74c1 JH |
1515 | } |
1516 | break; | |
49704364 WL |
1517 | case 'L' | TYPE_IS_SHRIEKING: |
1518 | #if LONGSIZE != SIZE32 | |
73cb7263 | 1519 | while (len-- > 0) { |
08ca2aa3 | 1520 | unsigned long aulong; |
aaec8192 | 1521 | SHIFT_VAR(utf8, s, strend, aulong, datumtype, needs_swap); |
08ca2aa3 | 1522 | if (!checksum) |
6e449a3a | 1523 | mPUSHu(aulong); |
73cb7263 NC |
1524 | else if (checksum > bits_in_uv) |
1525 | cdouble += (NV)aulong; | |
1526 | else | |
1527 | cuv += aulong; | |
49704364 WL |
1528 | } |
1529 | break; | |
1530 | #else | |
924ba076 | 1531 | /* FALLTHROUGH */ |
49704364 | 1532 | #endif |
a6ec74c1 JH |
1533 | case 'V': |
1534 | case 'N': | |
1535 | case 'L': | |
73cb7263 | 1536 | while (len-- > 0) { |
08ca2aa3 TH |
1537 | U32 au32; |
1538 | #if U32SIZE > SIZE32 | |
1539 | au32 = 0; | |
1540 | #endif | |
aaec8192 | 1541 | SHIFT32(utf8, s, strend, &au32, datumtype, needs_swap); |
73cb7263 NC |
1542 | if (datumtype == 'N') |
1543 | au32 = PerlSock_ntohl(au32); | |
73cb7263 NC |
1544 | if (datumtype == 'V') |
1545 | au32 = vtohl(au32); | |
08ca2aa3 | 1546 | if (!checksum) |
6e449a3a | 1547 | mPUSHu(au32); |
fc241834 RGS |
1548 | else if (checksum > bits_in_uv) |
1549 | cdouble += (NV)au32; | |
1550 | else | |
1551 | cuv += au32; | |
a6ec74c1 JH |
1552 | } |
1553 | break; | |
068bd2e7 MHM |
1554 | case 'V' | TYPE_IS_SHRIEKING: |
1555 | case 'N' | TYPE_IS_SHRIEKING: | |
73cb7263 | 1556 | while (len-- > 0) { |
08ca2aa3 | 1557 | I32 ai32; |
f8e5a5db | 1558 | #if U32SIZE > SIZE32 |
08ca2aa3 | 1559 | ai32 = 0; |
f8e5a5db | 1560 | #endif |
aaec8192 | 1561 | SHIFT32(utf8, s, strend, &ai32, datumtype, needs_swap); |
e396d235 NC |
1562 | /* There should never be any byte swapping here. */ |
1563 | assert(!TYPE_ENDIANNESS(datumtype)); | |
73cb7263 NC |
1564 | if (datumtype == ('N' | TYPE_IS_SHRIEKING)) |
1565 | ai32 = (I32)PerlSock_ntohl((U32)ai32); | |
73cb7263 NC |
1566 | if (datumtype == ('V' | TYPE_IS_SHRIEKING)) |
1567 | ai32 = (I32)vtohl((U32)ai32); | |
08ca2aa3 | 1568 | if (!checksum) |
6e449a3a | 1569 | mPUSHi(ai32); |
73cb7263 NC |
1570 | else if (checksum > bits_in_uv) |
1571 | cdouble += (NV)ai32; | |
1572 | else | |
1573 | cuv += ai32; | |
068bd2e7 MHM |
1574 | } |
1575 | break; | |
a6ec74c1 | 1576 | case 'p': |
a6ec74c1 | 1577 | while (len-- > 0) { |
f7fe979e | 1578 | const char *aptr; |
aaec8192 | 1579 | SHIFT_VAR(utf8, s, strend, aptr, datumtype, needs_swap); |
c4c5f44a | 1580 | /* newSVpv generates undef if aptr is NULL */ |
6e449a3a | 1581 | mPUSHs(newSVpv(aptr, 0)); |
a6ec74c1 JH |
1582 | } |
1583 | break; | |
1584 | case 'w': | |
a6ec74c1 JH |
1585 | { |
1586 | UV auv = 0; | |
1587 | U32 bytes = 0; | |
fc241834 | 1588 | |
08ca2aa3 TH |
1589 | while (len > 0 && s < strend) { |
1590 | U8 ch; | |
f337b084 | 1591 | ch = SHIFT_BYTE(utf8, s, strend, datumtype); |
08ca2aa3 | 1592 | auv = (auv << 7) | (ch & 0x7f); |
a6ec74c1 | 1593 | /* UTF8_IS_XXXXX not right here - using constant 0x80 */ |
08ca2aa3 | 1594 | if (ch < 0x80) { |
a6ec74c1 | 1595 | bytes = 0; |
6e449a3a | 1596 | mPUSHu(auv); |
a6ec74c1 JH |
1597 | len--; |
1598 | auv = 0; | |
08ca2aa3 | 1599 | continue; |
a6ec74c1 | 1600 | } |
08ca2aa3 | 1601 | if (++bytes >= sizeof(UV)) { /* promote to string */ |
10516c54 | 1602 | const char *t; |
a6ec74c1 | 1603 | |
f5992bc4 | 1604 | sv = Perl_newSVpvf(aTHX_ "%.*"UVuf, (int)TYPE_DIGITS(UV), auv); |
a6ec74c1 | 1605 | while (s < strend) { |
f337b084 | 1606 | ch = SHIFT_BYTE(utf8, s, strend, datumtype); |
08ca2aa3 TH |
1607 | sv = mul128(sv, (U8)(ch & 0x7f)); |
1608 | if (!(ch & 0x80)) { | |
a6ec74c1 JH |
1609 | bytes = 0; |
1610 | break; | |
1611 | } | |
1612 | } | |
10516c54 | 1613 | t = SvPV_nolen_const(sv); |
a6ec74c1 JH |
1614 | while (*t == '0') |
1615 | t++; | |
1616 | sv_chop(sv, t); | |
6e449a3a | 1617 | mPUSHs(sv); |
a6ec74c1 JH |
1618 | len--; |
1619 | auv = 0; | |
1620 | } | |
1621 | } | |
1622 | if ((s >= strend) && bytes) | |
49704364 | 1623 | Perl_croak(aTHX_ "Unterminated compressed integer in unpack"); |
a6ec74c1 JH |
1624 | } |
1625 | break; | |
1626 | case 'P': | |
49704364 WL |
1627 | if (symptr->howlen == e_star) |
1628 | Perl_croak(aTHX_ "'P' must have an explicit size in unpack"); | |
a6ec74c1 | 1629 | EXTEND(SP, 1); |
2d3e0934 | 1630 | if (s + sizeof(char*) <= strend) { |
08ca2aa3 | 1631 | char *aptr; |
aaec8192 | 1632 | SHIFT_VAR(utf8, s, strend, aptr, datumtype, needs_swap); |
fc241834 | 1633 | /* newSVpvn generates undef if aptr is NULL */ |
59cd0e26 | 1634 | PUSHs(newSVpvn_flags(aptr, len, SVs_TEMP)); |
08ca2aa3 | 1635 | } |
a6ec74c1 | 1636 | break; |
c174bf3b | 1637 | #if defined(HAS_QUAD) && IVSIZE >= 8 |
a6ec74c1 | 1638 | case 'q': |
73cb7263 | 1639 | while (len-- > 0) { |
08ca2aa3 | 1640 | Quad_t aquad; |
aaec8192 | 1641 | SHIFT_VAR(utf8, s, strend, aquad, datumtype, needs_swap); |
08ca2aa3 | 1642 | if (!checksum) |
c174bf3b | 1643 | mPUSHs(newSViv((IV)aquad)); |
73cb7263 NC |
1644 | else if (checksum > bits_in_uv) |
1645 | cdouble += (NV)aquad; | |
1646 | else | |
1647 | cuv += aquad; | |
1648 | } | |
a6ec74c1 JH |
1649 | break; |
1650 | case 'Q': | |
73cb7263 | 1651 | while (len-- > 0) { |
08ca2aa3 | 1652 | Uquad_t auquad; |
aaec8192 | 1653 | SHIFT_VAR(utf8, s, strend, auquad, datumtype, needs_swap); |
08ca2aa3 | 1654 | if (!checksum) |
c174bf3b | 1655 | mPUSHs(newSVuv((UV)auquad)); |
73cb7263 NC |
1656 | else if (checksum > bits_in_uv) |
1657 | cdouble += (NV)auquad; | |
1658 | else | |
1659 | cuv += auquad; | |
a6ec74c1 JH |
1660 | } |
1661 | break; | |
1640b983 | 1662 | #endif |
a6ec74c1 JH |
1663 | /* float and double added gnb@melba.bby.oz.au 22/11/89 */ |
1664 | case 'f': | |
73cb7263 | 1665 | while (len-- > 0) { |
08ca2aa3 | 1666 | float afloat; |
aaec8192 | 1667 | SHIFT_VAR(utf8, s, strend, afloat, datumtype, needs_swap); |
08ca2aa3 | 1668 | if (!checksum) |
6e449a3a | 1669 | mPUSHn(afloat); |
08ca2aa3 | 1670 | else |
73cb7263 | 1671 | cdouble += afloat; |
fc241834 | 1672 | } |
a6ec74c1 JH |
1673 | break; |
1674 | case 'd': | |
73cb7263 | 1675 | while (len-- > 0) { |
08ca2aa3 | 1676 | double adouble; |
aaec8192 | 1677 | SHIFT_VAR(utf8, s, strend, adouble, datumtype, needs_swap); |
08ca2aa3 | 1678 | if (!checksum) |
6e449a3a | 1679 | mPUSHn(adouble); |
08ca2aa3 | 1680 | else |
73cb7263 | 1681 | cdouble += adouble; |
fc241834 | 1682 | } |
a6ec74c1 | 1683 | break; |
92d41999 | 1684 | case 'F': |
73cb7263 | 1685 | while (len-- > 0) { |
275663fa | 1686 | NV_bytes anv; |
aaec8192 NC |
1687 | SHIFT_BYTES(utf8, s, strend, anv.bytes, sizeof(anv.bytes), |
1688 | datumtype, needs_swap); | |
08ca2aa3 | 1689 | if (!checksum) |
275663fa | 1690 | mPUSHn(anv.nv); |
08ca2aa3 | 1691 | else |
275663fa | 1692 | cdouble += anv.nv; |
fc241834 | 1693 | } |
92d41999 JH |
1694 | break; |
1695 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) | |
1696 | case 'D': | |
73cb7263 | 1697 | while (len-- > 0) { |
275663fa | 1698 | ld_bytes aldouble; |
aaec8192 NC |
1699 | SHIFT_BYTES(utf8, s, strend, aldouble.bytes, |
1700 | sizeof(aldouble.bytes), datumtype, needs_swap); | |
42262fd3 JH |
1701 | /* The most common long double format, the x86 80-bit |
1702 | * extended precision, has either 2 or 6 unused bytes, | |
1703 | * which may contain garbage, which may contain | |
1704 | * unintentional data. While we do zero the bytes of | |
1705 | * the long double data in pack(), here in unpack() we | |
1706 | * don't, because it's really hard to envision that | |
1707 | * reading the long double off aldouble would be | |
e075ae47 | 1708 | * affected by the unused bytes. |
42262fd3 JH |
1709 | * |
1710 | * Note that trying to unpack 'long doubles' of 'long | |
1711 | * doubles' packed in another system is in the general | |
1712 | * case doomed without having more detail. */ | |
08ca2aa3 | 1713 | if (!checksum) |
275663fa | 1714 | mPUSHn(aldouble.ld); |
08ca2aa3 | 1715 | else |
275663fa | 1716 | cdouble += aldouble.ld; |
92d41999 JH |
1717 | } |
1718 | break; | |
1719 | #endif | |
a6ec74c1 | 1720 | case 'u': |
858fe5e1 | 1721 | if (!checksum) { |
f7fe979e | 1722 | const STRLEN l = (STRLEN) (strend - s) * 3 / 4; |
561b68a9 | 1723 | sv = sv_2mortal(newSV(l)); |
08ca2aa3 TH |
1724 | if (l) SvPOK_on(sv); |
1725 | } | |
1726 | if (utf8) { | |
1727 | while (next_uni_uu(aTHX_ &s, strend, &len)) { | |
1728 | I32 a, b, c, d; | |
db187877 | 1729 | char hunk[3]; |
08ca2aa3 | 1730 | |
08ca2aa3 TH |
1731 | while (len > 0) { |
1732 | next_uni_uu(aTHX_ &s, strend, &a); | |
1733 | next_uni_uu(aTHX_ &s, strend, &b); | |
1734 | next_uni_uu(aTHX_ &s, strend, &c); | |
1735 | next_uni_uu(aTHX_ &s, strend, &d); | |
1736 | hunk[0] = (char)((a << 2) | (b >> 4)); | |
1737 | hunk[1] = (char)((b << 4) | (c >> 2)); | |
1738 | hunk[2] = (char)((c << 6) | d); | |
858fe5e1 TC |
1739 | if (!checksum) |
1740 | sv_catpvn(sv, hunk, (len > 3) ? 3 : len); | |
08ca2aa3 TH |
1741 | len -= 3; |
1742 | } | |
1743 | if (s < strend) { | |
f7fe979e AL |
1744 | if (*s == '\n') { |
1745 | s++; | |
1746 | } | |
08ca2aa3 TH |
1747 | else { |
1748 | /* possible checksum byte */ | |
f7fe979e AL |
1749 | const char *skip = s+UTF8SKIP(s); |
1750 | if (skip < strend && *skip == '\n') | |
1751 | s = skip+1; | |
08ca2aa3 TH |
1752 | } |
1753 | } | |
1754 | } | |
1755 | } else { | |
fc241834 RGS |
1756 | while (s < strend && *s > ' ' && ISUUCHAR(*s)) { |
1757 | I32 a, b, c, d; | |
db187877 | 1758 | char hunk[3]; |
a6ec74c1 | 1759 | |
fc241834 RGS |
1760 | len = PL_uudmap[*(U8*)s++] & 077; |
1761 | while (len > 0) { | |
1762 | if (s < strend && ISUUCHAR(*s)) | |
1763 | a = PL_uudmap[*(U8*)s++] & 077; | |
1764 | else | |
1765 | a = 0; | |
1766 | if (s < strend && ISUUCHAR(*s)) | |
1767 | b = PL_uudmap[*(U8*)s++] & 077; | |
1768 | else | |
1769 | b = 0; | |
1770 | if (s < strend && ISUUCHAR(*s)) | |
1771 | c = PL_uudmap[*(U8*)s++] & 077; | |
1772 | else | |
1773 | c = 0; | |
1774 | if (s < strend && ISUUCHAR(*s)) | |
1775 | d = PL_uudmap[*(U8*)s++] & 077; | |
1776 | else | |
1777 | d = 0; | |
1778 | hunk[0] = (char)((a << 2) | (b >> 4)); | |
1779 | hunk[1] = (char)((b << 4) | (c >> 2)); | |
1780 | hunk[2] = (char)((c << 6) | d); | |
858fe5e1 TC |
1781 | if (!checksum) |
1782 | sv_catpvn(sv, hunk, (len > 3) ? 3 : len); | |
fc241834 RGS |
1783 | len -= 3; |
1784 | } | |
1785 | if (*s == '\n') | |
1786 | s++; | |
1787 | else /* possible checksum byte */ | |
1788 | if (s + 1 < strend && s[1] == '\n') | |
1789 | s += 2; | |
a6ec74c1 | 1790 | } |
08ca2aa3 | 1791 | } |
858fe5e1 TC |
1792 | if (!checksum) |
1793 | XPUSHs(sv); | |
a6ec74c1 JH |
1794 | break; |
1795 | } | |
49704364 | 1796 | |
a6ec74c1 | 1797 | if (checksum) { |
1109a392 | 1798 | if (strchr("fFdD", TYPE_NO_MODIFIERS(datumtype)) || |
92d41999 | 1799 | (checksum > bits_in_uv && |
08ca2aa3 TH |
1800 | strchr("cCsSiIlLnNUWvVqQjJ", TYPE_NO_MODIFIERS(datumtype))) ) { |
1801 | NV trouble, anv; | |
a6ec74c1 | 1802 | |
08ca2aa3 | 1803 | anv = (NV) (1 << (checksum & 15)); |
a6ec74c1 JH |
1804 | while (checksum >= 16) { |
1805 | checksum -= 16; | |
08ca2aa3 | 1806 | anv *= 65536.0; |
a6ec74c1 | 1807 | } |
a6ec74c1 | 1808 | while (cdouble < 0.0) |
08ca2aa3 TH |
1809 | cdouble += anv; |
1810 | cdouble = Perl_modf(cdouble / anv, &trouble) * anv; | |
c4c5f44a | 1811 | sv = newSVnv(cdouble); |
a6ec74c1 JH |
1812 | } |
1813 | else { | |
fa8ec7c1 NC |
1814 | if (checksum < bits_in_uv) { |
1815 | UV mask = ((UV)1 << checksum) - 1; | |
92d41999 | 1816 | cuv &= mask; |
a6ec74c1 | 1817 | } |
c4c5f44a | 1818 | sv = newSVuv(cuv); |
a6ec74c1 | 1819 | } |
6e449a3a | 1820 | mXPUSHs(sv); |
a6ec74c1 JH |
1821 | checksum = 0; |
1822 | } | |
fc241834 | 1823 | |
49704364 WL |
1824 | if (symptr->flags & FLAG_SLASH){ |
1825 | if (SP - PL_stack_base - start_sp_offset <= 0) | |
21361d07 | 1826 | break; |
49704364 WL |
1827 | if( next_symbol(symptr) ){ |
1828 | if( symptr->howlen == e_number ) | |
1829 | Perl_croak(aTHX_ "Count after length/code in unpack" ); | |
1830 | if( beyond ){ | |
1831 | /* ...end of char buffer then no decent length available */ | |
1832 | Perl_croak(aTHX_ "length/code after end of string in unpack" ); | |
1833 | } else { | |
1834 | /* take top of stack (hope it's numeric) */ | |
1835 | len = POPi; | |
1836 | if( len < 0 ) | |
1837 | Perl_croak(aTHX_ "Negative '/' count in unpack" ); | |
1838 | } | |
1839 | } else { | |
1840 | Perl_croak(aTHX_ "Code missing after '/' in unpack" ); | |
1841 | } | |
1842 | datumtype = symptr->code; | |
21c16052 | 1843 | explicit_length = FALSE; |
49704364 WL |
1844 | goto redo_switch; |
1845 | } | |
a6ec74c1 | 1846 | } |
49704364 | 1847 | |
18529408 IZ |
1848 | if (new_s) |
1849 | *new_s = s; | |
1850 | PUTBACK; | |
1851 | return SP - PL_stack_base - start_sp_offset; | |
1852 | } | |
1853 | ||
1854 | PP(pp_unpack) | |
1855 | { | |
1856 | dSP; | |
bab9c0ac | 1857 | dPOPPOPssrl; |
18529408 IZ |
1858 | I32 gimme = GIMME_V; |
1859 | STRLEN llen; | |
1860 | STRLEN rlen; | |
5c144d81 NC |
1861 | const char *pat = SvPV_const(left, llen); |
1862 | const char *s = SvPV_const(right, rlen); | |
f7fe979e AL |
1863 | const char *strend = s + rlen; |
1864 | const char *patend = pat + llen; | |
08ca2aa3 | 1865 | I32 cnt; |
18529408 IZ |
1866 | |
1867 | PUTBACK; | |
7accc089 | 1868 | cnt = unpackstring(pat, patend, s, strend, |
49704364 | 1869 | ((gimme == G_SCALAR) ? FLAG_UNPACK_ONLY_ONE : 0) |
f337b084 | 1870 | | (DO_UTF8(right) ? FLAG_DO_UTF8 : 0)); |
49704364 | 1871 | |
18529408 IZ |
1872 | SPAGAIN; |
1873 | if ( !cnt && gimme == G_SCALAR ) | |
1874 | PUSHs(&PL_sv_undef); | |
a6ec74c1 JH |
1875 | RETURN; |
1876 | } | |
1877 | ||
f337b084 | 1878 | STATIC U8 * |
f7fe979e | 1879 | doencodes(U8 *h, const char *s, I32 len) |
a6ec74c1 | 1880 | { |
f337b084 | 1881 | *h++ = PL_uuemap[len]; |
a6ec74c1 | 1882 | while (len > 2) { |
f337b084 TH |
1883 | *h++ = PL_uuemap[(077 & (s[0] >> 2))]; |
1884 | *h++ = PL_uuemap[(077 & (((s[0] << 4) & 060) | ((s[1] >> 4) & 017)))]; | |
1885 | *h++ = PL_uuemap[(077 & (((s[1] << 2) & 074) | ((s[2] >> 6) & 03)))]; | |
1886 | *h++ = PL_uuemap[(077 & (s[2] & 077))]; | |
a6ec74c1 JH |
1887 | s += 3; |
1888 | len -= 3; | |
1889 | } | |
1890 | if (len > 0) { | |
f7fe979e | 1891 | const char r = (len > 1 ? s[1] : '\0'); |
f337b084 TH |
1892 | *h++ = PL_uuemap[(077 & (s[0] >> 2))]; |
1893 | *h++ = PL_uuemap[(077 & (((s[0] << 4) & 060) | ((r >> 4) & 017)))]; | |
1894 | *h++ = PL_uuemap[(077 & ((r << 2) & 074))]; | |
1895 | *h++ = PL_uuemap[0]; | |
a6ec74c1 | 1896 | } |
f337b084 TH |
1897 | *h++ = '\n'; |
1898 | return h; | |
a6ec74c1 JH |
1899 | } |
1900 | ||
1901 | STATIC SV * | |
f7fe979e | 1902 | S_is_an_int(pTHX_ const char *s, STRLEN l) |
a6ec74c1 | 1903 | { |
8b6e33c7 AL |
1904 | SV *result = newSVpvn(s, l); |
1905 | char *const result_c = SvPV_nolen(result); /* convenience */ | |
1906 | char *out = result_c; | |
1907 | bool skip = 1; | |
1908 | bool ignore = 0; | |
a6ec74c1 | 1909 | |
7918f24d NC |
1910 | PERL_ARGS_ASSERT_IS_AN_INT; |
1911 | ||
a6ec74c1 JH |
1912 | while (*s) { |
1913 | switch (*s) { | |
1914 | case ' ': | |
1915 | break; | |
1916 | case '+': | |
1917 | if (!skip) { | |
1918 | SvREFCNT_dec(result); | |
1919 | return (NULL); | |
1920 | } | |
1921 | break; | |
1922 | case '0': | |
1923 | case '1': | |
1924 | case '2': | |
1925 | case '3': | |
1926 | case '4': | |
1927 | case '5': | |
1928 | case '6': | |
1929 | case '7': | |
1930 | case '8': | |
1931 | case '9': | |
1932 | skip = 0; | |
1933 | if (!ignore) { | |
1934 | *(out++) = *s; | |
1935 | } | |
1936 | break; | |
1937 | case '.': | |
1938 | ignore = 1; | |
1939 | break; | |
1940 | default: | |
1941 | SvREFCNT_dec(result); | |
1942 | return (NULL); | |
1943 | } | |
1944 | s++; | |
1945 | } | |
1946 | *(out++) = '\0'; | |
1947 | SvCUR_set(result, out - result_c); | |
1948 | return (result); | |
1949 | } | |
1950 | ||
1951 | /* pnum must be '\0' terminated */ | |
1952 | STATIC int | |
1953 | S_div128(pTHX_ SV *pnum, bool *done) | |
1954 | { | |
8b6e33c7 AL |
1955 | STRLEN len; |
1956 | char * const s = SvPV(pnum, len); | |
1957 | char *t = s; | |
1958 | int m = 0; | |
1959 | ||
7918f24d NC |
1960 | PERL_ARGS_ASSERT_DIV128; |
1961 | ||
8b6e33c7 AL |
1962 | *done = 1; |
1963 | while (*t) { | |
1964 | const int i = m * 10 + (*t - '0'); | |
1965 | const int r = (i >> 7); /* r < 10 */ | |
1966 | m = i & 0x7F; | |
1967 | if (r) { | |
1968 | *done = 0; | |
1969 | } | |
1970 | *(t++) = '0' + r; | |
a6ec74c1 | 1971 | } |
8b6e33c7 AL |
1972 | *(t++) = '\0'; |
1973 | SvCUR_set(pnum, (STRLEN) (t - s)); | |
1974 | return (m); | |
a6ec74c1 JH |
1975 | } |
1976 | ||
18529408 | 1977 | /* |
7accc089 JH |
1978 | =for apidoc packlist |
1979 | ||
1980 | The engine implementing pack() Perl function. | |
1981 | ||
bfce84ec AL |
1982 | =cut |
1983 | */ | |
7accc089 JH |
1984 | |
1985 | void | |
5aaab254 | 1986 | Perl_packlist(pTHX_ SV *cat, const char *pat, const char *patend, SV **beglist, SV **endlist ) |
7accc089 | 1987 | { |
aadb217d JH |
1988 | tempsym_t sym; |
1989 | ||
7918f24d NC |
1990 | PERL_ARGS_ASSERT_PACKLIST; |
1991 | ||
f7fe979e | 1992 | TEMPSYM_INIT(&sym, pat, patend, FLAG_PACK); |
49704364 | 1993 | |
f337b084 TH |
1994 | /* We're going to do changes through SvPVX(cat). Make sure it's valid. |
1995 | Also make sure any UTF8 flag is loaded */ | |
56eb0262 | 1996 | SvPV_force_nolen(cat); |
bfce84ec AL |
1997 | if (DO_UTF8(cat)) |
1998 | sym.flags |= FLAG_PARSE_UTF8 | FLAG_DO_UTF8; | |
f337b084 | 1999 | |
49704364 WL |
2000 | (void)pack_rec( cat, &sym, beglist, endlist ); |
2001 | } | |
2002 | ||
f337b084 TH |
2003 | /* like sv_utf8_upgrade, but also repoint the group start markers */ |
2004 | STATIC void | |
2005 | marked_upgrade(pTHX_ SV *sv, tempsym_t *sym_ptr) { | |
2006 | STRLEN len; | |
2007 | tempsym_t *group; | |
f7fe979e AL |
2008 | const char *from_ptr, *from_start, *from_end, **marks, **m; |
2009 | char *to_start, *to_ptr; | |
f337b084 TH |
2010 | |
2011 | if (SvUTF8(sv)) return; | |
2012 | ||
aa07b2f6 | 2013 | from_start = SvPVX_const(sv); |
f337b084 TH |
2014 | from_end = from_start + SvCUR(sv); |
2015 | for (from_ptr = from_start; from_ptr < from_end; from_ptr++) | |
6f2d5cbc | 2016 | if (!NATIVE_BYTE_IS_INVARIANT(*from_ptr)) break; |
f337b084 TH |
2017 | if (from_ptr == from_end) { |
2018 | /* Simple case: no character needs to be changed */ | |
2019 | SvUTF8_on(sv); | |
2020 | return; | |
2021 | } | |
2022 | ||
3473cf63 | 2023 | len = (from_end-from_ptr)*UTF8_EXPAND+(from_ptr-from_start)+1; |
a02a5408 | 2024 | Newx(to_start, len, char); |
f337b084 TH |
2025 | Copy(from_start, to_start, from_ptr-from_start, char); |
2026 | to_ptr = to_start + (from_ptr-from_start); | |
2027 | ||
a02a5408 | 2028 | Newx(marks, sym_ptr->level+2, const char *); |
f337b084 TH |
2029 | for (group=sym_ptr; group; group = group->previous) |
2030 | marks[group->level] = from_start + group->strbeg; | |
2031 | marks[sym_ptr->level+1] = from_end+1; | |
2032 | for (m = marks; *m < from_ptr; m++) | |
2033 | *m = to_start + (*m-from_start); | |
2034 | ||
2035 | for (;from_ptr < from_end; from_ptr++) { | |
2036 | while (*m == from_ptr) *m++ = to_ptr; | |
230e1fce | 2037 | to_ptr = (char *) uvchr_to_utf8((U8 *) to_ptr, *(U8 *) from_ptr); |
f337b084 TH |
2038 | } |
2039 | *to_ptr = 0; | |
2040 | ||
2041 | while (*m == from_ptr) *m++ = to_ptr; | |
2042 | if (m != marks + sym_ptr->level+1) { | |
2043 | Safefree(marks); | |
2044 | Safefree(to_start); | |
5637ef5b NC |
2045 | Perl_croak(aTHX_ "panic: marks beyond string end, m=%p, marks=%p, " |
2046 | "level=%d", m, marks, sym_ptr->level); | |
f337b084 TH |
2047 | } |
2048 | for (group=sym_ptr; group; group = group->previous) | |
2049 | group->strbeg = marks[group->level] - to_start; | |
2050 | Safefree(marks); | |
2051 | ||
2052 | if (SvOOK(sv)) { | |
2053 | if (SvIVX(sv)) { | |
b162af07 | 2054 | SvLEN_set(sv, SvLEN(sv) + SvIVX(sv)); |
f337b084 TH |
2055 | from_start -= SvIVX(sv); |
2056 | SvIV_set(sv, 0); | |
2057 | } | |
2058 | SvFLAGS(sv) &= ~SVf_OOK; | |
2059 | } | |
2060 | if (SvLEN(sv) != 0) | |
2061 | Safefree(from_start); | |
f880fe2f | 2062 | SvPV_set(sv, to_start); |
b162af07 SP |
2063 | SvCUR_set(sv, to_ptr - to_start); |
2064 | SvLEN_set(sv, len); | |
f337b084 TH |
2065 | SvUTF8_on(sv); |
2066 | } | |
2067 | ||
2068 | /* Exponential string grower. Makes string extension effectively O(n) | |
2069 | needed says how many extra bytes we need (not counting the final '\0') | |
2070 | Only grows the string if there is an actual lack of space | |
2071 | */ | |
2072 | STATIC char * | |
0bd48802 | 2073 | S_sv_exp_grow(pTHX_ SV *sv, STRLEN needed) { |
f7fe979e AL |
2074 | const STRLEN cur = SvCUR(sv); |
2075 | const STRLEN len = SvLEN(sv); | |
f337b084 | 2076 | STRLEN extend; |
7918f24d NC |
2077 | |
2078 | PERL_ARGS_ASSERT_SV_EXP_GROW; | |
2079 | ||
f337b084 TH |
2080 | if (len - cur > needed) return SvPVX(sv); |
2081 | extend = needed > len ? needed : len; | |
2082 | return SvGROW(sv, len+extend+1); | |
2083 | } | |
49704364 | 2084 | |
354b74ae | 2085 | static void |
b197e565 | 2086 | S_sv_check_infnan(pTHX_ SV *sv, I32 datumtype) |
354b74ae FC |
2087 | { |
2088 | SvGETMAGIC(sv); | |
99f450cc | 2089 | if (UNLIKELY(isinfnansv(sv))) { |
354b74ae FC |
2090 | const I32 c = TYPE_NO_MODIFIERS(datumtype); |
2091 | const NV nv = SvNV_nomg(sv); | |
2092 | if (c == 'w') | |
2093 | Perl_croak(aTHX_ "Cannot compress %"NVgf" in pack", nv); | |
2094 | else | |
2095 | Perl_croak(aTHX_ "Cannot pack %"NVgf" with '%c'", nv, (int) c); | |
2096 | } | |
2097 | } | |
2098 | ||
b197e565 FC |
2099 | #define SvIV_no_inf(sv,d) (S_sv_check_infnan(aTHX_ sv,d), SvIV_nomg(sv)) |
2100 | #define SvUV_no_inf(sv,d) (S_sv_check_infnan(aTHX_ sv,d), SvUV_nomg(sv)) | |
354b74ae | 2101 | |
49704364 WL |
2102 | STATIC |
2103 | SV ** | |
f337b084 | 2104 | S_pack_rec(pTHX_ SV *cat, tempsym_t* symptr, SV **beglist, SV **endlist ) |
49704364 | 2105 | { |
49704364 | 2106 | tempsym_t lookahead; |
f337b084 TH |
2107 | I32 items = endlist - beglist; |
2108 | bool found = next_symbol(symptr); | |
2109 | bool utf8 = (symptr->flags & FLAG_PARSE_UTF8) ? 1 : 0; | |
041457d9 | 2110 | bool warn_utf8 = ckWARN(WARN_UTF8); |
81d52ecd | 2111 | char* from; |
f337b084 | 2112 | |
7918f24d NC |
2113 | PERL_ARGS_ASSERT_PACK_REC; |
2114 | ||
f337b084 TH |
2115 | if (symptr->level == 0 && found && symptr->code == 'U') { |
2116 | marked_upgrade(aTHX_ cat, symptr); | |
2117 | symptr->flags |= FLAG_DO_UTF8; | |
2118 | utf8 = 0; | |
49704364 | 2119 | } |
f337b084 | 2120 | symptr->strbeg = SvCUR(cat); |
49704364 WL |
2121 | |
2122 | while (found) { | |
f337b084 TH |
2123 | SV *fromstr; |
2124 | STRLEN fromlen; | |
2125 | I32 len; | |
a0714e2c | 2126 | SV *lengthcode = NULL; |
49704364 | 2127 | I32 datumtype = symptr->code; |
f337b084 TH |
2128 | howlen_t howlen = symptr->howlen; |
2129 | char *start = SvPVX(cat); | |
2130 | char *cur = start + SvCUR(cat); | |
a1219b5e | 2131 | bool needs_swap; |
49704364 | 2132 | |
f337b084 | 2133 | #define NEXTFROM (lengthcode ? lengthcode : items-- > 0 ? *beglist++ : &PL_sv_no) |
0c7df902 | 2134 | #define PEEKFROM (lengthcode ? lengthcode : items > 0 ? *beglist : &PL_sv_no) |
f337b084 TH |
2135 | |
2136 | switch (howlen) { | |
fc241834 | 2137 | case e_star: |
f337b084 TH |
2138 | len = strchr("@Xxu", TYPE_NO_MODIFIERS(datumtype)) ? |
2139 | 0 : items; | |
2140 | break; | |
2141 | default: | |
2142 | /* e_no_len and e_number */ | |
2143 | len = symptr->length; | |
49704364 WL |
2144 | break; |
2145 | } | |
2146 | ||
f337b084 | 2147 | if (len) { |
a7a3cfaa | 2148 | packprops_t props = packprops[TYPE_NO_ENDIANNESS(datumtype)]; |
f337b084 | 2149 | |
a7a3cfaa TH |
2150 | if (props && !(props & PACK_SIZE_UNPREDICTABLE)) { |
2151 | /* We can process this letter. */ | |
2152 | STRLEN size = props & PACK_SIZE_MASK; | |
2153 | GROWING(utf8, cat, start, cur, (STRLEN) len * size); | |
2154 | } | |
f337b084 TH |
2155 | } |
2156 | ||
49704364 WL |
2157 | /* Look ahead for next symbol. Do we have code/code? */ |
2158 | lookahead = *symptr; | |
2159 | found = next_symbol(&lookahead); | |
246f24af TH |
2160 | if (symptr->flags & FLAG_SLASH) { |
2161 | IV count; | |
f337b084 | 2162 | if (!found) Perl_croak(aTHX_ "Code missing after '/' in pack"); |
246f24af TH |
2163 | if (strchr("aAZ", lookahead.code)) { |
2164 | if (lookahead.howlen == e_number) count = lookahead.length; | |
2165 | else { | |
ce399ba6 | 2166 | if (items > 0) { |
48a5da33 | 2167 | count = sv_len_utf8(*beglist); |
ce399ba6 | 2168 | } |
246f24af TH |
2169 | else count = 0; |
2170 | if (lookahead.code == 'Z') count++; | |
2171 | } | |
2172 | } else { | |
2173 | if (lookahead.howlen == e_number && lookahead.length < items) | |
2174 | count = lookahead.length; | |
2175 | else count = items; | |
2176 | } | |
2177 | lookahead.howlen = e_number; | |
2178 | lookahead.length = count; | |
2179 | lengthcode = sv_2mortal(newSViv(count)); | |
a6ec74c1 | 2180 | } |
49704364 | 2181 | |
a1219b5e NC |
2182 | needs_swap = NEEDS_SWAP(datumtype); |
2183 | ||
fc241834 RGS |
2184 | /* Code inside the switch must take care to properly update |
2185 | cat (CUR length and '\0' termination) if it updated *cur and | |
f337b084 | 2186 | doesn't simply leave using break */ |
0c7df902 | 2187 | switch (TYPE_NO_ENDIANNESS(datumtype)) { |
a6ec74c1 | 2188 | default: |
f337b084 TH |
2189 | Perl_croak(aTHX_ "Invalid type '%c' in pack", |
2190 | (int) TYPE_NO_MODIFIERS(datumtype)); | |
a6ec74c1 | 2191 | case '%': |
49704364 | 2192 | Perl_croak(aTHX_ "'%%' may not be used in pack"); |
81d52ecd | 2193 | |
28be1210 | 2194 | case '.' | TYPE_IS_SHRIEKING: |
28be1210 TH |
2195 | case '.': |
2196 | if (howlen == e_star) from = start; | |
2197 | else if (len == 0) from = cur; | |
2198 | else { | |
2199 | tempsym_t *group = symptr; | |
2200 | ||
2201 | while (--len && group) group = group->previous; | |
2202 | from = group ? start + group->strbeg : start; | |
2203 | } | |
2204 | fromstr = NEXTFROM; | |
354b74ae | 2205 | len = SvIV_no_inf(fromstr, datumtype); |
28be1210 | 2206 | goto resize; |
28be1210 | 2207 | case '@' | TYPE_IS_SHRIEKING: |
a6ec74c1 | 2208 | case '@': |
28be1210 TH |
2209 | from = start + symptr->strbeg; |
2210 | resize: | |
28be1210 | 2211 | if (utf8 && !(datumtype & TYPE_IS_SHRIEKING)) |
28be1210 TH |
2212 | if (len >= 0) { |
2213 | while (len && from < cur) { | |
2214 | from += UTF8SKIP(from); | |
2215 | len--; | |
2216 | } | |
2217 | if (from > cur) | |
2218 | Perl_croak(aTHX_ "Malformed UTF-8 string in pack"); | |
2219 | if (len) { | |
2220 | /* Here we know from == cur */ | |
2221 | grow: | |
2222 | GROWING(0, cat, start, cur, len); | |
2223 | Zero(cur, len, char); | |
2224 | cur += len; | |
2225 | } else if (from < cur) { | |
2226 | len = cur - from; | |
2227 | goto shrink; | |
2228 | } else goto no_change; | |
2229 | } else { | |
2230 | cur = from; | |
2231 | len = -len; | |
2232 | goto utf8_shrink; | |
f337b084 | 2233 | } |
28be1210 TH |
2234 | else { |
2235 | len -= cur - from; | |
f337b084 | 2236 | if (len > 0) goto grow; |
28be1210 | 2237 | if (len == 0) goto no_change; |
fc241834 | 2238 | len = -len; |
28be1210 | 2239 | goto shrink; |
f337b084 | 2240 | } |
a6ec74c1 | 2241 | break; |
81d52ecd | 2242 | |
fc241834 | 2243 | case '(': { |
49704364 | 2244 | tempsym_t savsym = *symptr; |
66c611c5 MHM |
2245 | U32 group_modifiers = TYPE_MODIFIERS(datumtype & ~symptr->flags); |
2246 | symptr->flags |= group_modifiers; | |
49704364 WL |
2247 | symptr->patend = savsym.grpend; |
2248 | symptr->level++; | |
f337b084 | 2249 | symptr->previous = &lookahead; |
18529408 | 2250 | while (len--) { |
f337b084 TH |
2251 | U32 was_utf8; |
2252 | if (utf8) symptr->flags |= FLAG_PARSE_UTF8; | |
2253 | else symptr->flags &= ~FLAG_PARSE_UTF8; | |
2254 | was_utf8 = SvUTF8(cat); | |
49704364 | 2255 | symptr->patptr = savsym.grpbeg; |
f337b084 TH |
2256 | beglist = pack_rec(cat, symptr, beglist, endlist); |
2257 | if (SvUTF8(cat) != was_utf8) | |
2258 | /* This had better be an upgrade while in utf8==0 mode */ | |
2259 | utf8 = 1; | |
2260 | ||
49704364 | 2261 | if (savsym.howlen == e_star && beglist == endlist) |
18529408 IZ |
2262 | break; /* No way to continue */ |
2263 | } | |
ee790063 | 2264 | items = endlist - beglist; |
f337b084 TH |
2265 | lookahead.flags = symptr->flags & ~group_modifiers; |
2266 | goto no_change; | |
18529408 | 2267 | } |
62f95557 IZ |
2268 | case 'X' | TYPE_IS_SHRIEKING: |
2269 | if (!len) /* Avoid division by 0 */ | |
2270 | len = 1; | |
f337b084 TH |
2271 | if (utf8) { |
2272 | char *hop, *last; | |
2273 | I32 l = len; | |
2274 | hop = last = start; | |
2275 | while (hop < cur) { | |
2276 | hop += UTF8SKIP(hop); | |
2277 | if (--l == 0) { | |
2278 | last = hop; | |
2279 | l = len; | |
2280 | } | |
2281 | } | |
2282 | if (last > cur) | |
2283 | Perl_croak(aTHX_ "Malformed UTF-8 string in pack"); | |
2284 | cur = last; | |
2285 | break; | |
2286 | } | |
2287 | len = (cur-start) % len; | |
924ba076 | 2288 | /* FALLTHROUGH */ |
a6ec74c1 | 2289 | case 'X': |
f337b084 TH |
2290 | if (utf8) { |
2291 | if (len < 1) goto no_change; | |
28be1210 | 2292 | utf8_shrink: |
f337b084 TH |
2293 | while (len > 0) { |
2294 | if (cur <= start) | |
28be1210 TH |
2295 | Perl_croak(aTHX_ "'%c' outside of string in pack", |
2296 | (int) TYPE_NO_MODIFIERS(datumtype)); | |
f337b084 TH |
2297 | while (--cur, UTF8_IS_CONTINUATION(*cur)) { |
2298 | if (cur <= start) | |
28be1210 TH |
2299 | Perl_croak(aTHX_ "'%c' outside of string in pack", |
2300 | (int) TYPE_NO_MODIFIERS(datumtype)); | |
f337b084 TH |
2301 | } |
2302 | len--; | |
2303 | } | |
2304 | } else { | |
fc241834 | 2305 | shrink: |
f337b084 | 2306 | if (cur - start < len) |
28be1210 TH |
2307 | Perl_croak(aTHX_ "'%c' outside of string in pack", |
2308 | (int) TYPE_NO_MODIFIERS(datumtype)); | |
f337b084 TH |
2309 | cur -= len; |
2310 | } | |
2311 | if (cur < start+symptr->strbeg) { | |
2312 | /* Make sure group starts don't point into the void */ | |
2313 | tempsym_t *group; | |
9e27e96a | 2314 | const STRLEN length = cur-start; |
f337b084 TH |
2315 | for (group = symptr; |
2316 | group && length < group->strbeg; | |
2317 | group = group->previous) group->strbeg = length; | |
2318 | lookahead.strbeg = length; | |
2319 | } | |
a6ec74c1 | 2320 | break; |
fc241834 RGS |
2321 | case 'x' | TYPE_IS_SHRIEKING: { |
2322 | I32 ai32; | |
62f95557 IZ |
2323 | if (!len) /* Avoid division by 0 */ |
2324 | len = 1; | |
230e1fce | 2325 | if (utf8) ai32 = utf8_length((U8 *) start, (U8 *) cur) % len; |
fc241834 RGS |
2326 | else ai32 = (cur - start) % len; |
2327 | if (ai32 == 0) goto no_change; | |
2328 | len -= ai32; | |
2329 | } | |
924ba076 | 2330 | /* FALLTHROUGH */ |
a6ec74c1 | 2331 | case 'x': |
f337b084 | 2332 | goto grow; |
a6ec74c1 JH |
2333 | case 'A': |
2334 | case 'Z': | |
f337b084 | 2335 | case 'a': { |
f7fe979e | 2336 | const char *aptr; |
f337b084 | 2337 | |
a6ec74c1 | 2338 | fromstr = NEXTFROM; |
e62f0680 | 2339 | aptr = SvPV_const(fromstr, fromlen); |
f337b084 | 2340 | if (DO_UTF8(fromstr)) { |
f7fe979e | 2341 | const char *end, *s; |
f337b084 TH |
2342 | |
2343 | if (!utf8 && !SvUTF8(cat)) { | |
2344 | marked_upgrade(aTHX_ cat, symptr); | |
2345 | lookahead.flags |= FLAG_DO_UTF8; | |
2346 | lookahead.strbeg = symptr->strbeg; | |
2347 | utf8 = 1; | |
2348 | start = SvPVX(cat); | |
2349 | cur = start + SvCUR(cat); | |
2350 | } | |
fc241834 | 2351 | if (howlen == e_star) { |
f337b084 TH |
2352 | if (utf8) goto string_copy; |
2353 | len = fromlen+1; | |
2354 | } | |
2355 | s = aptr; | |
2356 | end = aptr + fromlen; | |
2357 | fromlen = datumtype == 'Z' ? len-1 : len; | |
2358 | while ((I32) fromlen > 0 && s < end) { | |
2359 | s += UTF8SKIP(s); | |
2360 | fromlen--; | |
2361 | } | |
2362 | if (s > end) | |
2363 | Perl_croak(aTHX_ "Malformed UTF-8 string in pack"); | |
2364 | if (utf8) { | |
fc241834 | 2365 | len = fromlen; |
f337b084 TH |
2366 | if (datumtype == 'Z') len++; |
2367 | fromlen = s-aptr; | |
2368 | len += fromlen; | |
fc241834 | 2369 | |
f337b084 | 2370 | goto string_copy; |
fc241834 | 2371 | } |
f337b084 TH |
2372 | fromlen = len - fromlen; |
2373 | if (datumtype == 'Z') fromlen--; | |
2374 | if (howlen == e_star) { | |
2375 | len = fromlen; | |
2376 | if (datumtype == 'Z') len++; | |
fc241834 | 2377 | } |
f337b084 | 2378 | GROWING(0, cat, start, cur, len); |
fc241834 | 2379 | if (!uni_to_bytes(aTHX_ &aptr, end, cur, fromlen, |
f337b084 | 2380 | datumtype | TYPE_IS_PACK)) |
5637ef5b NC |
2381 | Perl_croak(aTHX_ "panic: predicted utf8 length not available, " |
2382 | "for '%c', aptr=%p end=%p cur=%p, fromlen=%"UVuf, | |
2383 | (int)datumtype, aptr, end, cur, (UV)fromlen); | |
f337b084 | 2384 | cur += fromlen; |
a6ec74c1 | 2385 | len -= fromlen; |
f337b084 TH |
2386 | } else if (utf8) { |
2387 | if (howlen == e_star) { | |
2388 | len = fromlen; | |
2389 | if (datumtype == 'Z') len++; | |
a6ec74c1 | 2390 | } |
f337b084 TH |
2391 | if (len <= (I32) fromlen) { |
2392 | fromlen = len; | |
2393 | if (datumtype == 'Z' && fromlen > 0) fromlen--; | |
2394 | } | |
fc241834 | 2395 | /* assumes a byte expands to at most UTF8_EXPAND bytes on |
3473cf63 RGS |
2396 | upgrade, so: |
2397 | expected_length <= from_len*UTF8_EXPAND + (len-from_len) */ | |
2398 | GROWING(0, cat, start, cur, fromlen*(UTF8_EXPAND-1)+len); | |
f337b084 TH |
2399 | len -= fromlen; |
2400 | while (fromlen > 0) { | |
230e1fce | 2401 | cur = (char *) uvchr_to_utf8((U8 *) cur, * (U8 *) aptr); |
f337b084 TH |
2402 | aptr++; |
2403 | fromlen--; | |
fc241834 | 2404 | } |
f337b084 TH |
2405 | } else { |
2406 | string_copy: | |
2407 | if (howlen == e_star) { | |
2408 | len = fromlen; | |
2409 | if (datumtype == 'Z') len++; | |
2410 | } | |
2411 | if (len <= (I32) fromlen) { | |
2412 | fromlen = len; | |
2413 | if (datumtype == 'Z' && fromlen > 0) fromlen--; | |
a6ec74c1 | 2414 | } |
f337b084 TH |
2415 | GROWING(0, cat, start, cur, len); |
2416 | Copy(aptr, cur, fromlen, char); | |
2417 | cur += fromlen; | |
2418 | len -= fromlen; | |
a6ec74c1 | 2419 | } |
f337b084 TH |
2420 | memset(cur, datumtype == 'A' ? ' ' : '\0', len); |
2421 | cur += len; | |
3c4fb04a | 2422 | SvTAINT(cat); |
a6ec74c1 | 2423 | break; |
f337b084 | 2424 | } |
a6ec74c1 | 2425 | case 'B': |
f337b084 | 2426 | case 'b': { |
b83604b4 | 2427 | const char *str, *end; |
f337b084 TH |
2428 | I32 l, field_len; |
2429 | U8 bits; | |
2430 | bool utf8_source; | |
2431 | U32 utf8_flags; | |
a6ec74c1 | 2432 | |
fc241834 | 2433 | fromstr = NEXTFROM; |
b83604b4 | 2434 | str = SvPV_const(fromstr, fromlen); |
f337b084 TH |
2435 | end = str + fromlen; |
2436 | if (DO_UTF8(fromstr)) { | |
2437 | utf8_source = TRUE; | |
041457d9 | 2438 | utf8_flags = warn_utf8 ? 0 : UTF8_ALLOW_ANY; |
f337b084 TH |
2439 | } else { |
2440 | utf8_source = FALSE; | |
2441 | utf8_flags = 0; /* Unused, but keep compilers happy */ | |
2442 | } | |
2443 | if (howlen == e_star) len = fromlen; | |
2444 | field_len = (len+7)/8; | |
2445 | GROWING(utf8, cat, start, cur, field_len); | |
2446 | if (len > (I32)fromlen) len = fromlen; | |
2447 | bits = 0; | |
2448 | l = 0; | |
2449 | if (datumtype == 'B') | |
2450 | while (l++ < len) { | |
2451 | if (utf8_source) { | |
95b63a38 | 2452 | UV val = 0; |
f337b084 TH |
2453 | NEXT_UNI_VAL(val, cur, str, end, utf8_flags); |
2454 | bits |= val & 1; | |
2455 | } else bits |= *str++ & 1; | |
2456 | if (l & 7) bits <<= 1; | |
fc241834 | 2457 | else { |
f337b084 TH |
2458 | PUSH_BYTE(utf8, cur, bits); |
2459 | bits = 0; | |
a6ec74c1 JH |
2460 | } |
2461 | } | |
f337b084 TH |
2462 | else |
2463 | /* datumtype == 'b' */ | |
2464 | while (l++ < len) { | |
2465 | if (utf8_source) { | |
95b63a38 | 2466 | UV val = 0; |
f337b084 TH |
2467 | NEXT_UNI_VAL(val, cur, str, end, utf8_flags); |
2468 | if (val & 1) bits |= 0x80; | |
2469 | } else if (*str++ & 1) | |
2470 | bits |= 0x80; | |
2471 | if (l & 7) bits >>= 1; | |
fc241834 | 2472 | else { |
f337b084 TH |
2473 | PUSH_BYTE(utf8, cur, bits); |
2474 | bits = 0; | |
a6ec74c1 JH |
2475 | } |
2476 | } | |
f337b084 TH |
2477 | l--; |
2478 | if (l & 7) { | |
fc241834 | 2479 | if (datumtype == 'B') |
f337b084 | 2480 | bits <<= 7 - (l & 7); |
fc241834 | 2481 | else |
f337b084 TH |
2482 | bits >>= 7 - (l & 7); |
2483 | PUSH_BYTE(utf8, cur, bits); | |
2484 | l += 7; | |
a6ec74c1 | 2485 | } |
f337b084 TH |
2486 | /* Determine how many chars are left in the requested field */ |
2487 | l /= 8; | |
2488 | if (howlen == e_star) field_len = 0; | |
2489 | else field_len -= l; | |
2490 | Zero(cur, field_len, char); | |
2491 | cur += field_len; | |
a6ec74c1 | 2492 | break; |
f337b084 | 2493 | } |
a6ec74c1 | 2494 | case 'H': |
f337b084 | 2495 | case 'h': { |
10516c54 | 2496 | const char *str, *end; |
f337b084 TH |
2497 | I32 l, field_len; |
2498 | U8 bits; | |
2499 | bool utf8_source; | |
2500 | U32 utf8_flags; | |
a6ec74c1 | 2501 | |
fc241834 | 2502 | fromstr = NEXTFROM; |
10516c54 | 2503 | str = SvPV_const(fromstr, fromlen); |
f337b084 TH |
2504 | end = str + fromlen; |
2505 | if (DO_UTF8(fromstr)) { | |
2506 | utf8_source = TRUE; | |
041457d9 | 2507 | utf8_flags = warn_utf8 ? 0 : UTF8_ALLOW_ANY; |
f337b084 TH |
2508 | } else { |
2509 | utf8_source = FALSE; | |
2510 | utf8_flags = 0; /* Unused, but keep compilers happy */ | |
2511 | } | |
2512 | if (howlen == e_star) len = fromlen; | |
2513 | field_len = (len+1)/2; | |
2514 | GROWING(utf8, cat, start, cur, field_len); | |
2515 | if (!utf8 && len > (I32)fromlen) len = fromlen; | |
2516 | bits = 0; | |
2517 | l = 0; | |
2518 | if (datumtype == 'H') | |
2519 | while (l++ < len) { | |
2520 | if (utf8_source) { | |
95b63a38 | 2521 | UV val = 0; |
f337b084 TH |
2522 | NEXT_UNI_VAL(val, cur, str, end, utf8_flags); |
2523 | if (val < 256 && isALPHA(val)) | |
2524 | bits |= (val + 9) & 0xf; | |
a6ec74c1 | 2525 | else |
f337b084 TH |
2526 | bits |= val & 0xf; |
2527 | } else if (isALPHA(*str)) | |
2528 | bits |= (*str++ + 9) & 0xf; | |
2529 | else | |
2530 | bits |= *str++ & 0xf; | |
2531 | if (l & 1) bits <<= 4; | |
fc241834 | 2532 | else { |
f337b084 TH |
2533 | PUSH_BYTE(utf8, cur, bits); |
2534 | bits = 0; | |
a6ec74c1 JH |
2535 | } |
2536 | } | |
f337b084 TH |
2537 | else |
2538 | while (l++ < len) { | |
2539 | if (utf8_source) { | |
95b63a38 | 2540 | UV val = 0; |
f337b084 TH |
2541 | NEXT_UNI_VAL(val, cur, str, end, utf8_flags); |
2542 | if (val < 256 && isALPHA(val)) | |
2543 | bits |= ((val + 9) & 0xf) << 4; | |
a6ec74c1 | 2544 | else |
f337b084 TH |
2545 | bits |= (val & 0xf) << 4; |
2546 | } else if (isALPHA(*str)) | |
2547 | bits |= ((*str++ + 9) & 0xf) << 4; | |
2548 | else | |
2549 | bits |= (*str++ & 0xf) << 4; | |
2550 | if (l & 1) bits >>= 4; | |
fc241834 | 2551 | else { |
f337b084 TH |
2552 | PUSH_BYTE(utf8, cur, bits); |
2553 | bits = 0; | |
a6ec74c1 | 2554 | } |
fc241834 | 2555 | } |
f337b084 TH |
2556 | l--; |
2557 | if (l & 1) { | |
2558 | PUSH_BYTE(utf8, cur, bits); | |
2559 | l++; | |
2560 | } | |
2561 | /* Determine how many chars are left in the requested field */ | |
2562 | l /= 2; | |
2563 | if (howlen == e_star) field_len = 0; | |
2564 | else field_len -= l; | |
2565 | Zero(cur, field_len, char); | |
2566 | cur += field_len; | |
2567 | break; | |
fc241834 RGS |
2568 | } |
2569 | case 'c': | |
f337b084 TH |
2570 | while (len-- > 0) { |
2571 | IV aiv; | |
2572 | fromstr = NEXTFROM; | |
354b74ae | 2573 | aiv = SvIV_no_inf(fromstr, datumtype); |
a2a5de95 NC |
2574 | if ((-128 > aiv || aiv > 127)) |
2575 | Perl_ck_warner(aTHX_ packWARN(WARN_PACK), | |
2576 | "Character in 'c' format wrapped in pack"); | |
585ec06d | 2577 | PUSH_BYTE(utf8, cur, (U8)(aiv & 0xff)); |
a6ec74c1 JH |
2578 | } |
2579 | break; | |
2580 | case 'C': | |
f337b084 TH |
2581 | if (len == 0) { |
2582 | utf8 = (symptr->flags & FLAG_DO_UTF8) ? 1 : 0; | |
2583 | break; | |
2584 | } | |
a6ec74c1 | 2585 | while (len-- > 0) { |
f337b084 | 2586 | IV aiv; |
a6ec74c1 | 2587 | fromstr = NEXTFROM; |
354b74ae | 2588 | aiv = SvIV_no_inf(fromstr, datumtype); |
a2a5de95 NC |
2589 | if ((0 > aiv || aiv > 0xff)) |
2590 | Perl_ck_warner(aTHX_ packWARN(WARN_PACK), | |
2591 | "Character in 'C' format wrapped in pack"); | |
1651fc44 | 2592 | PUSH_BYTE(utf8, cur, (U8)(aiv & 0xff)); |
f337b084 | 2593 | } |
fc241834 RGS |
2594 | break; |
2595 | case 'W': { | |
2596 | char *end; | |
670f1322 | 2597 | U8 in_bytes = (U8)IN_BYTES; |
fc241834 RGS |
2598 | |
2599 | end = start+SvLEN(cat)-1; | |
2600 | if (utf8) end -= UTF8_MAXLEN-1; | |
2601 | while (len-- > 0) { | |
2602 | UV auv; | |
2603 | fromstr = NEXTFROM; | |
354b74ae | 2604 | auv = SvUV_no_inf(fromstr, datumtype); |
fc241834 RGS |
2605 | if (in_bytes) auv = auv % 0x100; |
2606 | if (utf8) { | |
2607 | W_utf8: | |
2608 | if (cur > end) { | |
2609 | *cur = '\0'; | |
b162af07 | 2610 | SvCUR_set(cat, cur - start); |
fc241834 RGS |
2611 | |
2612 | GROWING(0, cat, start, cur, len+UTF8_MAXLEN); | |
2613 | end = start+SvLEN(cat)-UTF8_MAXLEN; | |
2614 | } | |
c80e42f3 KW |
2615 | cur = (char *) uvchr_to_utf8_flags((U8 *) cur, |
2616 | auv, | |
041457d9 | 2617 | warn_utf8 ? |
230e1fce | 2618 | 0 : UNICODE_ALLOW_ANY); |
fc241834 RGS |
2619 | } else { |
2620 | if (auv >= 0x100) { | |
2621 | if (!SvUTF8(cat)) { | |
2622 | *cur = '\0'; | |
b162af07 | 2623 | SvCUR_set(cat, cur - start); |
fc241834 RGS |
2624 | marked_upgrade(aTHX_ cat, symptr); |
2625 | lookahead.flags |= FLAG_DO_UTF8; | |
2626 | lookahead.strbeg = symptr->strbeg; | |
2627 | utf8 = 1; | |
2628 | start = SvPVX(cat); | |
2629 | cur = start + SvCUR(cat); | |
2630 | end = start+SvLEN(cat)-UTF8_MAXLEN; | |
2631 | goto W_utf8; | |
2632 | } | |
a2a5de95 NC |
2633 | Perl_ck_warner(aTHX_ packWARN(WARN_PACK), |
2634 | "Character in 'W' format wrapped in pack"); | |
fc241834 RGS |
2635 | auv &= 0xff; |
2636 | } | |
2637 | if (cur >= end) { | |
2638 | *cur = '\0'; | |
b162af07 | 2639 | SvCUR_set(cat, cur - start); |
fc241834 RGS |
2640 | GROWING(0, cat, start, cur, len+1); |
2641 | end = start+SvLEN(cat)-1; | |
2642 | } | |
fe2774ed | 2643 | *(U8 *) cur++ = (U8)auv; |
a6ec74c1 JH |
2644 | } |
2645 | } | |
2646 | break; | |
fc241834 RGS |
2647 | } |
2648 | case 'U': { | |
2649 | char *end; | |
2650 | ||
2651 | if (len == 0) { | |
2652 | if (!(symptr->flags & FLAG_DO_UTF8)) { | |
2653 | marked_upgrade(aTHX_ cat, symptr); | |
2654 | lookahead.flags |= FLAG_DO_UTF8; | |
2655 | lookahead.strbeg = symptr->strbeg; | |
2656 | } | |
2657 | utf8 = 0; | |
2658 | goto no_change; | |
2659 | } | |
2660 | ||
2661 | end = start+SvLEN(cat); | |
2662 | if (!utf8) end -= UTF8_MAXLEN; | |
a6ec74c1 | 2663 | while (len-- > 0) { |
fc241834 | 2664 | UV auv; |
a6ec74c1 | 2665 | fromstr = NEXTFROM; |
354b74ae | 2666 | auv = SvUV_no_inf(fromstr, datumtype); |
fc241834 | 2667 | if (utf8) { |
230e1fce | 2668 | U8 buffer[UTF8_MAXLEN], *endb; |
c80e42f3 | 2669 | endb = uvchr_to_utf8_flags(buffer, auv, |
041457d9 | 2670 | warn_utf8 ? |
fc241834 RGS |
2671 | 0 : UNICODE_ALLOW_ANY); |
2672 | if (cur+(endb-buffer)*UTF8_EXPAND >= end) { | |
2673 | *cur = '\0'; | |
b162af07 | 2674 | SvCUR_set(cat, cur - start); |
fc241834 RGS |
2675 | GROWING(0, cat, start, cur, |
2676 | len+(endb-buffer)*UTF8_EXPAND); | |
2677 | end = start+SvLEN(cat); | |
2678 | } | |
3a88beaa | 2679 | cur = S_bytes_to_uni(buffer, endb-buffer, cur, 0); |
fc241834 RGS |
2680 | } else { |
2681 | if (cur >= end) { | |
2682 | *cur = '\0'; | |
b162af07 | 2683 | SvCUR_set(cat, cur - start); |
fc241834 RGS |
2684 | GROWING(0, cat, start, cur, len+UTF8_MAXLEN); |
2685 | end = start+SvLEN(cat)-UTF8_MAXLEN; | |
2686 | } | |
c80e42f3 | 2687 | cur = (char *) uvchr_to_utf8_flags((U8 *) cur, auv, |
041457d9 | 2688 | warn_utf8 ? |
230e1fce | 2689 | 0 : UNICODE_ALLOW_ANY); |
fc241834 | 2690 | } |
a6ec74c1 | 2691 | } |
a6ec74c1 | 2692 | break; |
fc241834 | 2693 | } |
a6ec74c1 JH |
2694 | /* Float and double added by gnb@melba.bby.oz.au 22/11/89 */ |
2695 | case 'f': | |
a6ec74c1 | 2696 | while (len-- > 0) { |
f337b084 TH |
2697 | float afloat; |
2698 | NV anv; | |
a6ec74c1 | 2699 | fromstr = NEXTFROM; |
f337b084 | 2700 | anv = SvNV(fromstr); |
85bba25f | 2701 | # if defined(VMS) && !defined(_IEEE_FP) |
f337b084 | 2702 | /* IEEE fp overflow shenanigans are unavailable on VAX and optional |
fc241834 RGS |
2703 | * on Alpha; fake it if we don't have them. |
2704 | */ | |
f337b084 | 2705 | if (anv > FLT_MAX) |
fc241834 | 2706 | afloat = FLT_MAX; |
f337b084 | 2707 | else if (anv < -FLT_MAX) |
fc241834 | 2708 | afloat = -FLT_MAX; |
f337b084 | 2709 | else afloat = (float)anv; |
baf3cf9c | 2710 | # else |
f337b084 | 2711 | afloat = (float)anv; |
baf3cf9c | 2712 | # endif |
3a88beaa | 2713 | PUSH_VAR(utf8, cur, afloat, needs_swap); |
a6ec74c1 JH |
2714 | } |
2715 | break; | |
2716 | case 'd': | |
a6ec74c1 | 2717 | while (len-- > 0) { |
f337b084 TH |
2718 | double adouble; |
2719 | NV anv; | |
a6ec74c1 | 2720 | fromstr = NEXTFROM; |
f337b084 | 2721 | anv = SvNV(fromstr); |
85bba25f | 2722 | # if defined(VMS) && !defined(_IEEE_FP) |
f337b084 | 2723 | /* IEEE fp overflow shenanigans are unavailable on VAX and optional |
fc241834 RGS |
2724 | * on Alpha; fake it if we don't have them. |
2725 | */ | |
f337b084 | 2726 | if (anv > DBL_MAX) |
fc241834 | 2727 | adouble = DBL_MAX; |
f337b084 | 2728 | else if (anv < -DBL_MAX) |
fc241834 | 2729 | adouble = -DBL_MAX; |
f337b084 | 2730 | else adouble = (double)anv; |
baf3cf9c | 2731 | # else |
f337b084 | 2732 | adouble = (double)anv; |
baf3cf9c | 2733 | # endif |
3a88beaa | 2734 | PUSH_VAR(utf8, cur, adouble, needs_swap); |
a6ec74c1 JH |
2735 | } |
2736 | break; | |
fc241834 | 2737 | case 'F': { |
275663fa | 2738 | NV_bytes anv; |
1109a392 | 2739 | Zero(&anv, 1, NV); /* can be long double with unused bits */ |
92d41999 JH |
2740 | while (len-- > 0) { |
2741 | fromstr = NEXTFROM; | |
cd07c537 DM |
2742 | #ifdef __GNUC__ |
2743 | /* to work round a gcc/x86 bug; don't use SvNV */ | |
2744 | anv.nv = sv_2nv(fromstr); | |
2745 | #else | |
275663fa | 2746 | anv.nv = SvNV(fromstr); |
cd07c537 | 2747 | #endif |
3a88beaa | 2748 | PUSH_BYTES(utf8, cur, anv.bytes, sizeof(anv.bytes), needs_swap); |
92d41999 JH |
2749 | } |
2750 | break; | |
fc241834 | 2751 | } |
92d41999 | 2752 | #if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE) |
fc241834 | 2753 | case 'D': { |
275663fa | 2754 | ld_bytes aldouble; |
1109a392 MHM |
2755 | /* long doubles can have unused bits, which may be nonzero */ |
2756 | Zero(&aldouble, 1, long double); | |
92d41999 JH |
2757 | while (len-- > 0) { |
2758 | fromstr = NEXTFROM; | |
cd07c537 DM |
2759 | # ifdef __GNUC__ |
2760 | /* to work round a gcc/x86 bug; don't use SvNV */ | |
2761 | aldouble.ld = (long double)sv_2nv(fromstr); | |
2762 | # else | |
275663fa | 2763 | aldouble.ld = (long double)SvNV(fromstr); |
cd07c537 | 2764 | # endif |
3a88beaa NC |
2765 | PUSH_BYTES(utf8, cur, aldouble.bytes, sizeof(aldouble.bytes), |
2766 | needs_swap); | |
92d41999 JH |
2767 | } |
2768 | break; | |
fc241834 | 2769 | } |
92d41999 | 2770 | #endif |
068bd2e7 | 2771 | case 'n' | TYPE_IS_SHRIEKING: |
a6ec74c1 JH |
2772 | case 'n': |
2773 | while (len-- > 0) { | |
f337b084 | 2774 | I16 ai16; |
a6ec74c1 | 2775 | fromstr = NEXTFROM; |
354b74ae | 2776 | ai16 = (I16)SvIV_no_inf(fromstr, datumtype); |
ef108786 | 2777 | ai16 = PerlSock_htons(ai16); |
3a88beaa | 2778 | PUSH16(utf8, cur, &ai16, FALSE); |
a6ec74c1 JH |
2779 | } |
2780 | break; | |
068bd2e7 | 2781 | case 'v' | TYPE_IS_SHRIEKING: |
a6ec74c1 JH |
2782 | case 'v': |
2783 | while (len-- > 0) { | |
f337b084 | 2784 | I16 ai16; |
a6ec74c1 | 2785 | fromstr = NEXTFROM; |
354b74ae | 2786 | ai16 = (I16)SvIV_no_inf(fromstr, datumtype); |
ef108786 | 2787 | ai16 = htovs(ai16); |
3a88beaa | 2788 | PUSH16(utf8, cur, &ai16, FALSE); |
a6ec74c1 JH |
2789 | } |
2790 | break; | |
49704364 | 2791 | case 'S' | TYPE_IS_SHRIEKING: |
a6ec74c1 | 2792 | #if SHORTSIZE != SIZE16 |
fc241834 | 2793 | while (len-- > 0) { |
f337b084 | 2794 | unsigned short aushort; |
fc241834 | 2795 | fromstr = NEXTFROM; |
354b74ae | 2796 | aushort = SvUV_no_inf(fromstr, datumtype); |
3a88beaa | 2797 | PUSH_VAR(utf8, cur, aushort, needs_swap); |
fc241834 | 2798 | } |
49704364 WL |
2799 | break; |
2800 | #else | |
924ba076 | 2801 | /* FALLTHROUGH */ |
a6ec74c1 | 2802 | #endif |
49704364 | 2803 | case 'S': |
fc241834 | 2804 | while (len-- > 0) { |
f337b084 | 2805 | U16 au16; |
fc241834 | 2806 | fromstr = NEXTFROM; |
354b74ae | 2807 | au16 = (U16)SvUV_no_inf(fromstr, datumtype); |
3a88beaa | 2808 | PUSH16(utf8, cur, &au16, needs_swap); |
a6ec74c1 JH |
2809 | } |
2810 | break; | |
49704364 | 2811 | case 's' | TYPE_IS_SHRIEKING: |
a6ec74c1 | 2812 | #if SHORTSIZE != SIZE16 |
fc241834 | 2813 | while (len-- > 0) { |
f337b084 | 2814 | short ashort; |
fc241834 | 2815 | fromstr = NEXTFROM; |
354b74ae | 2816 | ashort = SvIV_no_inf(fromstr, datumtype); |
3a88beaa | 2817 | PUSH_VAR(utf8, cur, ashort, needs_swap); |
a6ec74c1 | 2818 | } |
49704364 WL |
2819 | break; |
2820 | #else | |
924ba076 | 2821 | /* FALLTHROUGH */ |
a6ec74c1 | 2822 | #endif |
49704364 WL |
2823 | case 's': |
2824 | while (len-- > 0) { | |
f337b084 | 2825 | I16 ai16; |
49704364 | 2826 | fromstr = NEXTFROM; |
354b74ae | 2827 | ai16 = (I16)SvIV_no_inf(fromstr, datumtype); |
3a88beaa | 2828 | PUSH16(utf8, cur, &ai16, needs_swap); |
a6ec74c1 JH |
2829 | } |
2830 | break; | |
2831 | case 'I': | |
49704364 | 2832 | case 'I' | TYPE_IS_SHRIEKING: |
a6ec74c1 | 2833 | while (len-- > 0) { |
f337b084 | 2834 | unsigned int auint; |
a6ec74c1 | 2835 | fromstr = NEXTFROM; |
354b74ae | 2836 | auint = SvUV_no_inf(fromstr, datumtype); |
3a88beaa | 2837 | PUSH_VAR(utf8, cur, auint, needs_swap); |
a6ec74c1 JH |
2838 | } |
2839 | break; | |
92d41999 JH |
2840 | case 'j': |
2841 | while (len-- > 0) { | |
f337b084 | 2842 | IV aiv; |
92d41999 | 2843 | fromstr = NEXTFROM; |
354b74ae | 2844 | aiv = SvIV_no_inf(fromstr, datumtype); |
3a88beaa | 2845 | PUSH_VAR(utf8, cur, aiv, needs_swap); |
92d41999 JH |
2846 | } |
2847 | break; | |
2848 | case 'J': | |
2849 | while (len-- > 0) { | |
f337b084 | 2850 | UV auv; |
92d41999 | 2851 | fromstr = NEXTFROM; |
354b74ae | 2852 | auv = SvUV_no_inf(fromstr, datumtype); |
3a88beaa | 2853 | PUSH_VAR(utf8, cur, auv, needs_swap); |
92d41999 JH |
2854 | } |
2855 | break; | |
a6ec74c1 JH |
2856 | case 'w': |
2857 | while (len-- > 0) { | |
f337b084 | 2858 | NV anv; |
a6ec74c1 | 2859 | fromstr = NEXTFROM; |
83388ae2 | 2860 | S_sv_check_infnan(aTHX_ fromstr, datumtype); |
354b74ae | 2861 | anv = SvNV_nomg(fromstr); |
a6ec74c1 | 2862 | |
f337b084 TH |
2863 | if (anv < 0) { |
2864 | *cur = '\0'; | |
b162af07 | 2865 | SvCUR_set(cat, cur - start); |
49704364 | 2866 | Perl_croak(aTHX_ "Cannot compress negative numbers in pack"); |
f337b084 | 2867 | } |
a6ec74c1 | 2868 | |
196b62db NC |
2869 | /* 0xFFFFFFFFFFFFFFFF may cast to 18446744073709551616.0, |
2870 | which is == UV_MAX_P1. IOK is fine (instead of UV_only), as | |
2871 | any negative IVs will have already been got by the croak() | |
2872 | above. IOK is untrue for fractions, so we test them | |
2873 | against UV_MAX_P1. */ | |
f337b084 TH |
2874 | if (SvIOK(fromstr) || anv < UV_MAX_P1) { |
2875 | char buf[(sizeof(UV)*CHAR_BIT)/7+1]; | |
a6ec74c1 | 2876 | char *in = buf + sizeof(buf); |
1e9a122e | 2877 | UV auv = SvUV_nomg(fromstr); |
a6ec74c1 JH |
2878 | |
2879 | do { | |
eb160463 | 2880 | *--in = (char)((auv & 0x7f) | 0x80); |
a6ec74c1 JH |
2881 | auv >>= 7; |
2882 | } while (auv); | |
2883 | buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */ | |
f337b084 TH |
2884 | PUSH_GROWING_BYTES(utf8, cat, start, cur, |
2885 | in, (buf + sizeof(buf)) - in); | |
2886 | } else if (SvPOKp(fromstr)) | |
2887 | goto w_string; | |
a6ec74c1 | 2888 | else if (SvNOKp(fromstr)) { |
0258719b | 2889 | /* 10**NV_MAX_10_EXP is the largest power of 10 |
486ec47a | 2890 | so 10**(NV_MAX_10_EXP+1) is definitely unrepresentable |
0258719b NC |
2891 | given 10**(NV_MAX_10_EXP+1) == 128 ** x solve for x: |
2892 | x = (NV_MAX_10_EXP+1) * log (10) / log (128) | |
2893 | And with that many bytes only Inf can overflow. | |
8f8d40ab PG |
2894 | Some C compilers are strict about integral constant |
2895 | expressions so we conservatively divide by a slightly | |
2896 | smaller integer instead of multiplying by the exact | |
2897 | floating-point value. | |
0258719b NC |
2898 | */ |
2899 | #ifdef NV_MAX_10_EXP | |
f337b084 | 2900 | /* char buf[1 + (int)((NV_MAX_10_EXP + 1) * 0.47456)]; -- invalid C */ |
8f8d40ab | 2901 | char buf[1 + (int)((NV_MAX_10_EXP + 1) / 2)]; /* valid C */ |
0258719b | 2902 | #else |
f337b084 | 2903 | /* char buf[1 + (int)((308 + 1) * 0.47456)]; -- invalid C */ |
8f8d40ab | 2904 | char buf[1 + (int)((308 + 1) / 2)]; /* valid C */ |
0258719b | 2905 | #endif |
a6ec74c1 JH |
2906 | char *in = buf + sizeof(buf); |
2907 | ||
8b6e33c7 | 2908 | anv = Perl_floor(anv); |
a6ec74c1 | 2909 | do { |
8b6e33c7 | 2910 | const NV next = Perl_floor(anv / 128); |
a6ec74c1 | 2911 | if (in <= buf) /* this cannot happen ;-) */ |
0c7df902 | 2912 | Perl_croak(aTHX_ "Cannot compress integer in pack"); |
0258719b | 2913 | *--in = (unsigned char)(anv - (next * 128)) | 0x80; |
15e9f109 NC |
2914 | anv = next; |
2915 | } while (anv > 0); | |
a6ec74c1 | 2916 | buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */ |
f337b084 TH |
2917 | PUSH_GROWING_BYTES(utf8, cat, start, cur, |
2918 | in, (buf + sizeof(buf)) - in); | |
2919 | } else { | |
8b6e33c7 AL |
2920 | const char *from; |
2921 | char *result, *in; | |
735b914b JH |
2922 | SV *norm; |
2923 | STRLEN len; | |
2924 | bool done; | |
2925 | ||
f337b084 | 2926 | w_string: |
735b914b | 2927 | /* Copy string and check for compliance */ |
1e9a122e | 2928 | from = SvPV_nomg_const(fromstr, len); |
735b914b | 2929 | if ((norm = is_an_int(from, len)) == NULL) |
49704364 | 2930 | Perl_croak(aTHX_ "Can only compress unsigned integers in pack"); |
735b914b | 2931 | |
a02a5408 | 2932 | Newx(result, len, char); |
735b914b JH |
2933 | in = result + len; |
2934 | done = FALSE; | |
f337b084 | 2935 | while (!done) *--in = div128(norm, &done) | 0x80; |
735b914b | 2936 | result[len - 1] &= 0x7F; /* clear continue bit */ |
f337b084 TH |
2937 | PUSH_GROWING_BYTES(utf8, cat, start, cur, |
2938 | in, (result + len) - in); | |
735b914b JH |
2939 | Safefree(result); |
2940 | SvREFCNT_dec(norm); /* free norm */ | |
fc241834 | 2941 | } |
a6ec74c1 JH |
2942 | } |
2943 | break; | |
2944 | case 'i': | |
49704364 | 2945 | case 'i' | TYPE_IS_SHRIEKING: |
a6ec74c1 | 2946 | while (len-- > 0) { |
f337b084 | 2947 | int aint; |
a6ec74c1 | 2948 | fromstr = NEXTFROM; |
354b74ae | 2949 | aint = SvIV_no_inf(fromstr, datumtype); |
3a88beaa | 2950 | PUSH_VAR(utf8, cur, aint, needs_swap); |
a6ec74c1 JH |
2951 | } |
2952 | break; | |
068bd2e7 | 2953 | case 'N' | TYPE_IS_SHRIEKING: |
a6ec74c1 JH |
2954 | case 'N': |
2955 | while (len-- > 0) { | |
f337b084 | 2956 | U32 au32; |
a6ec74c1 | 2957 | fromstr = NEXTFROM; |
354b74ae | 2958 | au32 = SvUV_no_inf(fromstr, datumtype); |
ef108786 | 2959 | au32 = PerlSock_htonl(au32); |
3a88beaa | 2960 | PUSH32(utf8, cur, &au32, FALSE); |
a6ec74c1 JH |
2961 | } |
2962 | break; | |
068bd2e7 | 2963 | case 'V' | TYPE_IS_SHRIEKING: |
a6ec74c1 JH |
2964 | case 'V': |
2965 | while (len-- > 0) { | |
f337b084 | 2966 | U32 au32; |
a6ec74c1 | 2967 | fromstr = NEXTFROM; |
354b74ae | 2968 | au32 = SvUV_no_inf(fromstr, datumtype); |
ef108786 | 2969 | au32 = htovl(au32); |
3a88beaa | 2970 | PUSH32(utf8, cur, &au32, FALSE); |
a6ec74c1 JH |
2971 | } |
2972 | break; | |
49704364 | 2973 | case 'L' | TYPE_IS_SHRIEKING: |
a6ec74c1 | 2974 | #if LONGSIZE != SIZE32 |
fc241834 | 2975 | while (len-- > 0) { |
f337b084 | 2976 | unsigned long aulong; |
fc241834 | 2977 | fromstr = NEXTFROM; |
354b74ae | 2978 | aulong = SvUV_no_inf(fromstr, datumtype); |
3a88beaa | 2979 | PUSH_VAR(utf8, cur, aulong, needs_swap); |
a6ec74c1 | 2980 | } |
49704364 WL |
2981 | break; |
2982 | #else | |
2983 | /* Fall though! */ | |
a6ec74c1 | 2984 | #endif |
49704364 | 2985 | case 'L': |
fc241834 | 2986 | while (len-- > 0) { |
f337b084 | 2987 | U32 au32; |
fc241834 | 2988 | fromstr = NEXTFROM; |
354b74ae | 2989 | au32 = SvUV_no_inf(fromstr, datumtype); |
3a88beaa | 2990 | PUSH32(utf8, cur, &au32, needs_swap); |
a6ec74c1 JH |
2991 | } |
2992 | break; | |
49704364 | 2993 | case 'l' | TYPE_IS_SHRIEKING: |
a6ec74c1 | 2994 | #if LONGSIZE != SIZE32 |
fc241834 | 2995 | while (len-- > 0) { |
f337b084 | 2996 | long along; |
fc241834 | 2997 | fromstr = NEXTFROM; |
354b74ae | 2998 | along = SvIV_no_inf(fromstr, datumtype); |
3a88beaa | 2999 | PUSH_VAR(utf8, cur, along, needs_swap); |
a6ec74c1 | 3000 | } |
49704364 WL |
3001 | break; |
3002 | #else | |
3003 | /* Fall though! */ | |
a6ec74c1 | 3004 | #endif |
49704364 WL |
3005 | case 'l': |
3006 | while (len-- > 0) { | |
f337b084 | 3007 | I32 ai32; |
49704364 | 3008 | fromstr = NEXTFROM; |
354b74ae | 3009 | ai32 = SvIV_no_inf(fromstr, datumtype); |
3a88beaa | 3010 | PUSH32(utf8, cur, &ai32, needs_swap); |
a6ec74c1 JH |
3011 | } |
3012 | break; | |
c174bf3b | 3013 | #if defined(HAS_QUAD) && IVSIZE >= 8 |
a6ec74c1 JH |
3014 | case 'Q': |
3015 | while (len-- > 0) { | |
f337b084 | 3016 | Uquad_t auquad; |
a6ec74c1 | 3017 | fromstr = NEXTFROM; |
354b74ae | 3018 | auquad = (Uquad_t) SvUV_no_inf(fromstr, datumtype); |
3a88beaa | 3019 | PUSH_VAR(utf8, cur, auquad, needs_swap); |
a6ec74c1 JH |
3020 | } |
3021 | break; | |
3022 | case 'q': | |
3023 | while (len-- > 0) { | |
f337b084 | 3024 | Quad_t aquad; |
a6ec74c1 | 3025 | fromstr = NEXTFROM; |
354b74ae | 3026 | aquad = (Quad_t)SvIV_no_inf(fromstr, datumtype); |
3a88beaa | 3027 | PUSH_VAR(utf8, cur, aquad, needs_swap); |
a6ec74c1 JH |
3028 | } |
3029 | break; | |
1640b983 | 3030 | #endif |
a6ec74c1 JH |
3031 | case 'P': |
3032 | len = 1; /* assume SV is correct length */ | |
f337b084 | 3033 | GROWING(utf8, cat, start, cur, sizeof(char *)); |
924ba076 | 3034 | /* FALLTHROUGH */ |
a6ec74c1 JH |
3035 | case 'p': |
3036 | while (len-- > 0) { | |
83003860 | 3037 | const char *aptr; |
f337b084 | 3038 | |
a6ec74c1 | 3039 | fromstr = NEXTFROM; |
28a4f200 TH |
3040 | SvGETMAGIC(fromstr); |
3041 | if (!SvOK(fromstr)) aptr = NULL; | |
a6ec74c1 | 3042 | else { |
a6ec74c1 JH |
3043 | /* XXX better yet, could spirit away the string to |
3044 | * a safe spot and hang on to it until the result | |
3045 | * of pack() (and all copies of the result) are | |
3046 | * gone. | |
3047 | */ | |
041457d9 | 3048 | if ((SvTEMP(fromstr) || (SvPADTMP(fromstr) && |
a2a5de95 NC |
3049 | !SvREADONLY(fromstr)))) { |
3050 | Perl_ck_warner(aTHX_ packWARN(WARN_PACK), | |
3051 | "Attempt to pack pointer to temporary value"); | |
a6ec74c1 JH |
3052 | } |
3053 | if (SvPOK(fromstr) || SvNIOK(fromstr)) | |
2596d9fe | 3054 | aptr = SvPV_nomg_const_nolen(fromstr); |
a6ec74c1 | 3055 | else |
2596d9fe | 3056 | aptr = SvPV_force_flags_nolen(fromstr, 0); |
a6ec74c1 | 3057 | } |
3a88beaa | 3058 | PUSH_VAR(utf8, cur, aptr, needs_swap); |
a6ec74c1 JH |
3059 | } |
3060 | break; | |
fc241834 | 3061 | case 'u': { |
f7fe979e | 3062 | const char *aptr, *aend; |
fc241834 | 3063 | bool from_utf8; |
f337b084 | 3064 | |
a6ec74c1 | 3065 | fromstr = NEXTFROM; |
fc241834 RGS |
3066 | if (len <= 2) len = 45; |
3067 | else len = len / 3 * 3; | |
3068 | if (len >= 64) { | |
a2a5de95 NC |
3069 | Perl_ck_warner(aTHX_ packWARN(WARN_PACK), |
3070 | "Field too wide in 'u' format in pack"); | |
fc241834 RGS |
3071 | len = 63; |
3072 | } | |
83003860 | 3073 | aptr = SvPV_const(fromstr, fromlen); |
fc241834 RGS |
3074 | from_utf8 = DO_UTF8(fromstr); |
3075 | if (from_utf8) { | |
3076 | aend = aptr + fromlen; | |
3f63b0e5 | 3077 | fromlen = sv_len_utf8_nomg(fromstr); |
fc241834 RGS |
3078 | } else aend = NULL; /* Unused, but keep compilers happy */ |
3079 | GROWING(utf8, cat, start, cur, (fromlen+2) / 3 * 4 + (fromlen+len-1)/len * 2); | |
a6ec74c1 | 3080 | while (fromlen > 0) { |
fc241834 | 3081 | U8 *end; |
a6ec74c1 | 3082 | I32 todo; |
fc241834 | 3083 | U8 hunk[1+63/3*4+1]; |
a6ec74c1 | 3084 | |
eb160463 | 3085 | if ((I32)fromlen > len) |
a6ec74c1 JH |
3086 | todo = len; |
3087 | else | |
3088 | todo = fromlen; | |
fc241834 RGS |
3089 | if (from_utf8) { |
3090 | char buffer[64]; | |
3091 | if (!uni_to_bytes(aTHX_ &aptr, aend, buffer, todo, | |
3092 | 'u' | TYPE_IS_PACK)) { | |
3093 | *cur = '\0'; | |
b162af07 | 3094 | SvCUR_set(cat, cur - start); |
5637ef5b NC |
3095 | Perl_croak(aTHX_ "panic: string is shorter than advertised, " |
3096 | "aptr=%p, aend=%p, buffer=%p, todo=%ld", | |
3097 | aptr, aend, buffer, (long) todo); | |
fc241834 RGS |
3098 | } |
3099 | end = doencodes(hunk, buffer, todo); | |
3100 | } else { | |
3101 | end = doencodes(hunk, aptr, todo); | |
3102 | aptr += todo; | |
3103 | } | |
3a88beaa | 3104 | PUSH_BYTES(utf8, cur, hunk, end-hunk, 0); |
fc241834 RGS |
3105 | fromlen -= todo; |
3106 | } | |
a6ec74c1 JH |
3107 | break; |
3108 | } | |
f337b084 TH |
3109 | } |
3110 | *cur = '\0'; | |
b162af07 | 3111 | SvCUR_set(cat, cur - start); |
f337b084 | 3112 | no_change: |
49704364 | 3113 | *symptr = lookahead; |
a6ec74c1 | 3114 | } |
49704364 | 3115 | return beglist; |
18529408 IZ |
3116 | } |
3117 | #undef NEXTFROM | |
3118 | ||
3119 | ||
3120 | PP(pp_pack) | |
3121 | { | |
20b7effb | 3122 | dSP; dMARK; dORIGMARK; dTARGET; |
eb578fdb | 3123 | SV *cat = TARG; |
18529408 | 3124 | STRLEN fromlen; |
349d4f2f | 3125 | SV *pat_sv = *++MARK; |
eb578fdb KW |
3126 | const char *pat = SvPV_const(pat_sv, fromlen); |
3127 | const char *patend = pat + fromlen; | |
18529408 IZ |
3128 | |
3129 | MARK++; | |
76f68e9b | 3130 | sv_setpvs(cat, ""); |
f337b084 | 3131 | SvUTF8_off(cat); |
18529408 | 3132 | |
7accc089 | 3133 | packlist(cat, pat, patend, MARK, SP + 1); |
18529408 | 3134 | |
a6ec74c1 JH |
3135 | SvSETMAGIC(cat); |
3136 | SP = ORIGMARK; | |
3137 | PUSHs(cat); | |
3138 | RETURN; | |
3139 | } | |
a6ec74c1 | 3140 | |
73cb7263 NC |
3141 | /* |
3142 | * Local variables: | |
3143 | * c-indentation-style: bsd | |
3144 | * c-basic-offset: 4 | |
14d04a33 | 3145 | * indent-tabs-mode: nil |
73cb7263 NC |
3146 | * End: |
3147 | * | |
14d04a33 | 3148 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 3149 | */ |