| 1 | /* sv.c |
| 2 | * |
| 3 | * Copyright (c) 1991-1997, Larry Wall |
| 4 | * |
| 5 | * You may distribute under the terms of either the GNU General Public |
| 6 | * License or the Artistic License, as specified in the README file. |
| 7 | * |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * "I wonder what the Entish is for 'yes' and 'no'," he thought. |
| 12 | */ |
| 13 | |
| 14 | #include "EXTERN.h" |
| 15 | #include "perl.h" |
| 16 | |
| 17 | #ifdef OVR_DBL_DIG |
| 18 | /* Use an overridden DBL_DIG */ |
| 19 | # ifdef DBL_DIG |
| 20 | # undef DBL_DIG |
| 21 | # endif |
| 22 | # define DBL_DIG OVR_DBL_DIG |
| 23 | #else |
| 24 | /* The following is all to get DBL_DIG, in order to pick a nice |
| 25 | default value for printing floating point numbers in Gconvert. |
| 26 | (see config.h) |
| 27 | */ |
| 28 | #ifdef I_LIMITS |
| 29 | #include <limits.h> |
| 30 | #endif |
| 31 | #ifdef I_FLOAT |
| 32 | #include <float.h> |
| 33 | #endif |
| 34 | #ifndef HAS_DBL_DIG |
| 35 | #define DBL_DIG 15 /* A guess that works lots of places */ |
| 36 | #endif |
| 37 | #endif |
| 38 | |
| 39 | #if defined(USE_STDIO_PTR) && defined(STDIO_PTR_LVALUE) && defined(STDIO_CNT_LVALUE) && !defined(__QNX__) |
| 40 | # define FAST_SV_GETS |
| 41 | #endif |
| 42 | |
| 43 | static IV asIV _((SV* sv)); |
| 44 | static UV asUV _((SV* sv)); |
| 45 | static SV *more_sv _((void)); |
| 46 | static XPVIV *more_xiv _((void)); |
| 47 | static XPVNV *more_xnv _((void)); |
| 48 | static XPV *more_xpv _((void)); |
| 49 | static XRV *more_xrv _((void)); |
| 50 | static XPVIV *new_xiv _((void)); |
| 51 | static XPVNV *new_xnv _((void)); |
| 52 | static XPV *new_xpv _((void)); |
| 53 | static XRV *new_xrv _((void)); |
| 54 | static void del_xiv _((XPVIV* p)); |
| 55 | static void del_xnv _((XPVNV* p)); |
| 56 | static void del_xpv _((XPV* p)); |
| 57 | static void del_xrv _((XRV* p)); |
| 58 | static void sv_mortalgrow _((void)); |
| 59 | static void sv_unglob _((SV* sv)); |
| 60 | static void sv_check_thinkfirst _((SV *sv)); |
| 61 | |
| 62 | typedef void (*SVFUNC) _((SV*)); |
| 63 | |
| 64 | #ifdef PURIFY |
| 65 | |
| 66 | #define new_SV(p) \ |
| 67 | do { \ |
| 68 | LOCK_SV_MUTEX; \ |
| 69 | (p) = (SV*)safemalloc(sizeof(SV)); \ |
| 70 | reg_add(p); \ |
| 71 | UNLOCK_SV_MUTEX; \ |
| 72 | } while (0) |
| 73 | |
| 74 | #define del_SV(p) \ |
| 75 | do { \ |
| 76 | LOCK_SV_MUTEX; \ |
| 77 | reg_remove(p); \ |
| 78 | Safefree((char*)(p)); \ |
| 79 | UNLOCK_SV_MUTEX; \ |
| 80 | } while (0) |
| 81 | |
| 82 | static SV **registry; |
| 83 | static I32 regsize; |
| 84 | |
| 85 | #define REGHASH(sv,size) ((((U32)(sv)) >> 2) % (size)) |
| 86 | |
| 87 | #define REG_REPLACE(sv,a,b) \ |
| 88 | do { \ |
| 89 | void* p = sv->sv_any; \ |
| 90 | I32 h = REGHASH(sv, regsize); \ |
| 91 | I32 i = h; \ |
| 92 | while (registry[i] != (a)) { \ |
| 93 | if (++i >= regsize) \ |
| 94 | i = 0; \ |
| 95 | if (i == h) \ |
| 96 | die("SV registry bug"); \ |
| 97 | } \ |
| 98 | registry[i] = (b); \ |
| 99 | } while (0) |
| 100 | |
| 101 | #define REG_ADD(sv) REG_REPLACE(sv,Nullsv,sv) |
| 102 | #define REG_REMOVE(sv) REG_REPLACE(sv,sv,Nullsv) |
| 103 | |
| 104 | static void |
| 105 | reg_add(sv) |
| 106 | SV* sv; |
| 107 | { |
| 108 | if (sv_count >= (regsize >> 1)) |
| 109 | { |
| 110 | SV **oldreg = registry; |
| 111 | I32 oldsize = regsize; |
| 112 | |
| 113 | regsize = regsize ? ((regsize << 2) + 1) : 2037; |
| 114 | registry = (SV**)safemalloc(regsize * sizeof(SV*)); |
| 115 | memzero(registry, regsize * sizeof(SV*)); |
| 116 | |
| 117 | if (oldreg) { |
| 118 | I32 i; |
| 119 | |
| 120 | for (i = 0; i < oldsize; ++i) { |
| 121 | SV* oldsv = oldreg[i]; |
| 122 | if (oldsv) |
| 123 | REG_ADD(oldsv); |
| 124 | } |
| 125 | Safefree(oldreg); |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | REG_ADD(sv); |
| 130 | ++sv_count; |
| 131 | } |
| 132 | |
| 133 | static void |
| 134 | reg_remove(sv) |
| 135 | SV* sv; |
| 136 | { |
| 137 | REG_REMOVE(sv); |
| 138 | --sv_count; |
| 139 | } |
| 140 | |
| 141 | static void |
| 142 | visit(f) |
| 143 | SVFUNC f; |
| 144 | { |
| 145 | I32 i; |
| 146 | |
| 147 | for (i = 0; i < regsize; ++i) { |
| 148 | SV* sv = registry[i]; |
| 149 | if (sv) |
| 150 | (*f)(sv); |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | void |
| 155 | sv_add_arena(ptr, size, flags) |
| 156 | char* ptr; |
| 157 | U32 size; |
| 158 | U32 flags; |
| 159 | { |
| 160 | if (!(flags & SVf_FAKE)) |
| 161 | Safefree(ptr); |
| 162 | } |
| 163 | |
| 164 | #else /* ! PURIFY */ |
| 165 | |
| 166 | /* |
| 167 | * "A time to plant, and a time to uproot what was planted..." |
| 168 | */ |
| 169 | |
| 170 | #define plant_SV(p) \ |
| 171 | do { \ |
| 172 | SvANY(p) = (void *)sv_root; \ |
| 173 | SvFLAGS(p) = SVTYPEMASK; \ |
| 174 | sv_root = (p); \ |
| 175 | --sv_count; \ |
| 176 | } while (0) |
| 177 | |
| 178 | /* sv_mutex must be held while calling uproot_SV() */ |
| 179 | #define uproot_SV(p) \ |
| 180 | do { \ |
| 181 | (p) = sv_root; \ |
| 182 | sv_root = (SV*)SvANY(p); \ |
| 183 | ++sv_count; \ |
| 184 | } while (0) |
| 185 | |
| 186 | #define new_SV(p) do { \ |
| 187 | LOCK_SV_MUTEX; \ |
| 188 | if (sv_root) \ |
| 189 | uproot_SV(p); \ |
| 190 | else \ |
| 191 | (p) = more_sv(); \ |
| 192 | UNLOCK_SV_MUTEX; \ |
| 193 | } while (0) |
| 194 | |
| 195 | #ifdef DEBUGGING |
| 196 | |
| 197 | #define del_SV(p) do { \ |
| 198 | LOCK_SV_MUTEX; \ |
| 199 | if (debug & 32768) \ |
| 200 | del_sv(p); \ |
| 201 | else \ |
| 202 | plant_SV(p); \ |
| 203 | UNLOCK_SV_MUTEX; \ |
| 204 | } while (0) |
| 205 | |
| 206 | static void |
| 207 | del_sv(SV *p) |
| 208 | { |
| 209 | if (debug & 32768) { |
| 210 | SV* sva; |
| 211 | SV* sv; |
| 212 | SV* svend; |
| 213 | int ok = 0; |
| 214 | for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) { |
| 215 | sv = sva + 1; |
| 216 | svend = &sva[SvREFCNT(sva)]; |
| 217 | if (p >= sv && p < svend) |
| 218 | ok = 1; |
| 219 | } |
| 220 | if (!ok) { |
| 221 | warn("Attempt to free non-arena SV: 0x%lx", (unsigned long)p); |
| 222 | return; |
| 223 | } |
| 224 | } |
| 225 | plant_SV(p); |
| 226 | } |
| 227 | |
| 228 | #else /* ! DEBUGGING */ |
| 229 | |
| 230 | #define del_SV(p) plant_SV(p) |
| 231 | |
| 232 | #endif /* DEBUGGING */ |
| 233 | |
| 234 | void |
| 235 | sv_add_arena(char *ptr, U32 size, U32 flags) |
| 236 | { |
| 237 | SV* sva = (SV*)ptr; |
| 238 | register SV* sv; |
| 239 | register SV* svend; |
| 240 | Zero(sva, size, char); |
| 241 | |
| 242 | /* The first SV in an arena isn't an SV. */ |
| 243 | SvANY(sva) = (void *) sv_arenaroot; /* ptr to next arena */ |
| 244 | SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */ |
| 245 | SvFLAGS(sva) = flags; /* FAKE if not to be freed */ |
| 246 | |
| 247 | sv_arenaroot = sva; |
| 248 | sv_root = sva + 1; |
| 249 | |
| 250 | svend = &sva[SvREFCNT(sva) - 1]; |
| 251 | sv = sva + 1; |
| 252 | while (sv < svend) { |
| 253 | SvANY(sv) = (void *)(SV*)(sv + 1); |
| 254 | SvFLAGS(sv) = SVTYPEMASK; |
| 255 | sv++; |
| 256 | } |
| 257 | SvANY(sv) = 0; |
| 258 | SvFLAGS(sv) = SVTYPEMASK; |
| 259 | } |
| 260 | |
| 261 | /* sv_mutex must be held while calling more_sv() */ |
| 262 | static SV* |
| 263 | more_sv(void) |
| 264 | { |
| 265 | register SV* sv; |
| 266 | |
| 267 | if (nice_chunk) { |
| 268 | sv_add_arena(nice_chunk, nice_chunk_size, 0); |
| 269 | nice_chunk = Nullch; |
| 270 | } |
| 271 | else { |
| 272 | char *chunk; /* must use New here to match call to */ |
| 273 | New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */ |
| 274 | sv_add_arena(chunk, 1008, 0); |
| 275 | } |
| 276 | uproot_SV(sv); |
| 277 | return sv; |
| 278 | } |
| 279 | |
| 280 | static void |
| 281 | visit(SVFUNC f) |
| 282 | { |
| 283 | SV* sva; |
| 284 | SV* sv; |
| 285 | register SV* svend; |
| 286 | |
| 287 | for (sva = sv_arenaroot; sva; sva = (SV*)SvANY(sva)) { |
| 288 | svend = &sva[SvREFCNT(sva)]; |
| 289 | for (sv = sva + 1; sv < svend; ++sv) { |
| 290 | if (SvTYPE(sv) != SVTYPEMASK) |
| 291 | (*f)(sv); |
| 292 | } |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | #endif /* PURIFY */ |
| 297 | |
| 298 | static void |
| 299 | do_report_used(SV *sv) |
| 300 | { |
| 301 | if (SvTYPE(sv) != SVTYPEMASK) { |
| 302 | /* XXX Perhaps this ought to go to Perl_debug_log, if DEBUGGING. */ |
| 303 | PerlIO_printf(PerlIO_stderr(), "****\n"); |
| 304 | sv_dump(sv); |
| 305 | } |
| 306 | } |
| 307 | |
| 308 | void |
| 309 | sv_report_used(void) |
| 310 | { |
| 311 | visit(do_report_used); |
| 312 | } |
| 313 | |
| 314 | static void |
| 315 | do_clean_objs(SV *sv) |
| 316 | { |
| 317 | SV* rv; |
| 318 | |
| 319 | if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) { |
| 320 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));) |
| 321 | SvROK_off(sv); |
| 322 | SvRV(sv) = 0; |
| 323 | SvREFCNT_dec(rv); |
| 324 | } |
| 325 | |
| 326 | /* XXX Might want to check arrays, etc. */ |
| 327 | } |
| 328 | |
| 329 | #ifndef DISABLE_DESTRUCTOR_KLUDGE |
| 330 | static void |
| 331 | do_clean_named_objs(SV *sv) |
| 332 | { |
| 333 | if (SvTYPE(sv) == SVt_PVGV && GvSV(sv)) |
| 334 | do_clean_objs(GvSV(sv)); |
| 335 | } |
| 336 | #endif |
| 337 | |
| 338 | static bool in_clean_objs = FALSE; |
| 339 | |
| 340 | void |
| 341 | sv_clean_objs(void) |
| 342 | { |
| 343 | in_clean_objs = TRUE; |
| 344 | #ifndef DISABLE_DESTRUCTOR_KLUDGE |
| 345 | visit(do_clean_named_objs); |
| 346 | #endif |
| 347 | visit(do_clean_objs); |
| 348 | in_clean_objs = FALSE; |
| 349 | } |
| 350 | |
| 351 | static void |
| 352 | do_clean_all(SV *sv) |
| 353 | { |
| 354 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops:\n "), sv_dump(sv));) |
| 355 | SvFLAGS(sv) |= SVf_BREAK; |
| 356 | SvREFCNT_dec(sv); |
| 357 | } |
| 358 | |
| 359 | static bool in_clean_all = FALSE; |
| 360 | |
| 361 | void |
| 362 | sv_clean_all(void) |
| 363 | { |
| 364 | in_clean_all = TRUE; |
| 365 | visit(do_clean_all); |
| 366 | in_clean_all = FALSE; |
| 367 | } |
| 368 | |
| 369 | void |
| 370 | sv_free_arenas(void) |
| 371 | { |
| 372 | SV* sva; |
| 373 | SV* svanext; |
| 374 | |
| 375 | /* Free arenas here, but be careful about fake ones. (We assume |
| 376 | contiguity of the fake ones with the corresponding real ones.) */ |
| 377 | |
| 378 | for (sva = sv_arenaroot; sva; sva = svanext) { |
| 379 | svanext = (SV*) SvANY(sva); |
| 380 | while (svanext && SvFAKE(svanext)) |
| 381 | svanext = (SV*) SvANY(svanext); |
| 382 | |
| 383 | if (!SvFAKE(sva)) |
| 384 | Safefree((void *)sva); |
| 385 | } |
| 386 | |
| 387 | sv_arenaroot = 0; |
| 388 | sv_root = 0; |
| 389 | } |
| 390 | |
| 391 | static XPVIV* |
| 392 | new_xiv(void) |
| 393 | { |
| 394 | IV** xiv; |
| 395 | if (xiv_root) { |
| 396 | xiv = xiv_root; |
| 397 | /* |
| 398 | * See comment in more_xiv() -- RAM. |
| 399 | */ |
| 400 | xiv_root = (IV**)*xiv; |
| 401 | return (XPVIV*)((char*)xiv - sizeof(XPV)); |
| 402 | } |
| 403 | return more_xiv(); |
| 404 | } |
| 405 | |
| 406 | static void |
| 407 | del_xiv(XPVIV *p) |
| 408 | { |
| 409 | IV** xiv = (IV**)((char*)(p) + sizeof(XPV)); |
| 410 | *xiv = (IV *)xiv_root; |
| 411 | xiv_root = xiv; |
| 412 | } |
| 413 | |
| 414 | static XPVIV* |
| 415 | more_xiv(void) |
| 416 | { |
| 417 | register IV** xiv; |
| 418 | register IV** xivend; |
| 419 | XPV* ptr = (XPV*)safemalloc(1008); |
| 420 | ptr->xpv_pv = (char*)xiv_arenaroot; /* linked list of xiv arenas */ |
| 421 | xiv_arenaroot = ptr; /* to keep Purify happy */ |
| 422 | |
| 423 | xiv = (IV**) ptr; |
| 424 | xivend = &xiv[1008 / sizeof(IV *) - 1]; |
| 425 | xiv += (sizeof(XPV) - 1) / sizeof(IV *) + 1; /* fudge by size of XPV */ |
| 426 | xiv_root = xiv; |
| 427 | while (xiv < xivend) { |
| 428 | *xiv = (IV *)(xiv + 1); |
| 429 | xiv++; |
| 430 | } |
| 431 | *xiv = 0; |
| 432 | return new_xiv(); |
| 433 | } |
| 434 | |
| 435 | static XPVNV* |
| 436 | new_xnv(void) |
| 437 | { |
| 438 | double* xnv; |
| 439 | if (xnv_root) { |
| 440 | xnv = xnv_root; |
| 441 | xnv_root = *(double**)xnv; |
| 442 | return (XPVNV*)((char*)xnv - sizeof(XPVIV)); |
| 443 | } |
| 444 | return more_xnv(); |
| 445 | } |
| 446 | |
| 447 | static void |
| 448 | del_xnv(XPVNV *p) |
| 449 | { |
| 450 | double* xnv = (double*)((char*)(p) + sizeof(XPVIV)); |
| 451 | *(double**)xnv = xnv_root; |
| 452 | xnv_root = xnv; |
| 453 | } |
| 454 | |
| 455 | static XPVNV* |
| 456 | more_xnv(void) |
| 457 | { |
| 458 | register double* xnv; |
| 459 | register double* xnvend; |
| 460 | xnv = (double*)safemalloc(1008); |
| 461 | xnvend = &xnv[1008 / sizeof(double) - 1]; |
| 462 | xnv += (sizeof(XPVIV) - 1) / sizeof(double) + 1; /* fudge by sizeof XPVIV */ |
| 463 | xnv_root = xnv; |
| 464 | while (xnv < xnvend) { |
| 465 | *(double**)xnv = (double*)(xnv + 1); |
| 466 | xnv++; |
| 467 | } |
| 468 | *(double**)xnv = 0; |
| 469 | return new_xnv(); |
| 470 | } |
| 471 | |
| 472 | static XRV* |
| 473 | new_xrv(void) |
| 474 | { |
| 475 | XRV* xrv; |
| 476 | if (xrv_root) { |
| 477 | xrv = xrv_root; |
| 478 | xrv_root = (XRV*)xrv->xrv_rv; |
| 479 | return xrv; |
| 480 | } |
| 481 | return more_xrv(); |
| 482 | } |
| 483 | |
| 484 | static void |
| 485 | del_xrv(XRV *p) |
| 486 | { |
| 487 | p->xrv_rv = (SV*)xrv_root; |
| 488 | xrv_root = p; |
| 489 | } |
| 490 | |
| 491 | static XRV* |
| 492 | more_xrv(void) |
| 493 | { |
| 494 | register XRV* xrv; |
| 495 | register XRV* xrvend; |
| 496 | xrv_root = (XRV*)safemalloc(1008); |
| 497 | xrv = xrv_root; |
| 498 | xrvend = &xrv[1008 / sizeof(XRV) - 1]; |
| 499 | while (xrv < xrvend) { |
| 500 | xrv->xrv_rv = (SV*)(xrv + 1); |
| 501 | xrv++; |
| 502 | } |
| 503 | xrv->xrv_rv = 0; |
| 504 | return new_xrv(); |
| 505 | } |
| 506 | |
| 507 | static XPV* |
| 508 | new_xpv(void) |
| 509 | { |
| 510 | XPV* xpv; |
| 511 | if (xpv_root) { |
| 512 | xpv = xpv_root; |
| 513 | xpv_root = (XPV*)xpv->xpv_pv; |
| 514 | return xpv; |
| 515 | } |
| 516 | return more_xpv(); |
| 517 | } |
| 518 | |
| 519 | static void |
| 520 | del_xpv(XPV *p) |
| 521 | { |
| 522 | p->xpv_pv = (char*)xpv_root; |
| 523 | xpv_root = p; |
| 524 | } |
| 525 | |
| 526 | static XPV* |
| 527 | more_xpv(void) |
| 528 | { |
| 529 | register XPV* xpv; |
| 530 | register XPV* xpvend; |
| 531 | xpv_root = (XPV*)safemalloc(1008); |
| 532 | xpv = xpv_root; |
| 533 | xpvend = &xpv[1008 / sizeof(XPV) - 1]; |
| 534 | while (xpv < xpvend) { |
| 535 | xpv->xpv_pv = (char*)(xpv + 1); |
| 536 | xpv++; |
| 537 | } |
| 538 | xpv->xpv_pv = 0; |
| 539 | return new_xpv(); |
| 540 | } |
| 541 | |
| 542 | #ifdef PURIFY |
| 543 | #define new_XIV() (void*)safemalloc(sizeof(XPVIV)) |
| 544 | #define del_XIV(p) Safefree((char*)p) |
| 545 | #else |
| 546 | #define new_XIV() (void*)new_xiv() |
| 547 | #define del_XIV(p) del_xiv((XPVIV*) p) |
| 548 | #endif |
| 549 | |
| 550 | #ifdef PURIFY |
| 551 | #define new_XNV() (void*)safemalloc(sizeof(XPVNV)) |
| 552 | #define del_XNV(p) Safefree((char*)p) |
| 553 | #else |
| 554 | #define new_XNV() (void*)new_xnv() |
| 555 | #define del_XNV(p) del_xnv((XPVNV*) p) |
| 556 | #endif |
| 557 | |
| 558 | #ifdef PURIFY |
| 559 | #define new_XRV() (void*)safemalloc(sizeof(XRV)) |
| 560 | #define del_XRV(p) Safefree((char*)p) |
| 561 | #else |
| 562 | #define new_XRV() (void*)new_xrv() |
| 563 | #define del_XRV(p) del_xrv((XRV*) p) |
| 564 | #endif |
| 565 | |
| 566 | #ifdef PURIFY |
| 567 | #define new_XPV() (void*)safemalloc(sizeof(XPV)) |
| 568 | #define del_XPV(p) Safefree((char*)p) |
| 569 | #else |
| 570 | #define new_XPV() (void*)new_xpv() |
| 571 | #define del_XPV(p) del_xpv((XPV *)p) |
| 572 | #endif |
| 573 | |
| 574 | #define new_XPVIV() (void*)safemalloc(sizeof(XPVIV)) |
| 575 | #define del_XPVIV(p) Safefree((char*)p) |
| 576 | |
| 577 | #define new_XPVNV() (void*)safemalloc(sizeof(XPVNV)) |
| 578 | #define del_XPVNV(p) Safefree((char*)p) |
| 579 | |
| 580 | #define new_XPVMG() (void*)safemalloc(sizeof(XPVMG)) |
| 581 | #define del_XPVMG(p) Safefree((char*)p) |
| 582 | |
| 583 | #define new_XPVLV() (void*)safemalloc(sizeof(XPVLV)) |
| 584 | #define del_XPVLV(p) Safefree((char*)p) |
| 585 | |
| 586 | #define new_XPVAV() (void*)safemalloc(sizeof(XPVAV)) |
| 587 | #define del_XPVAV(p) Safefree((char*)p) |
| 588 | |
| 589 | #define new_XPVHV() (void*)safemalloc(sizeof(XPVHV)) |
| 590 | #define del_XPVHV(p) Safefree((char*)p) |
| 591 | |
| 592 | #define new_XPVCV() (void*)safemalloc(sizeof(XPVCV)) |
| 593 | #define del_XPVCV(p) Safefree((char*)p) |
| 594 | |
| 595 | #define new_XPVGV() (void*)safemalloc(sizeof(XPVGV)) |
| 596 | #define del_XPVGV(p) Safefree((char*)p) |
| 597 | |
| 598 | #define new_XPVBM() (void*)safemalloc(sizeof(XPVBM)) |
| 599 | #define del_XPVBM(p) Safefree((char*)p) |
| 600 | |
| 601 | #define new_XPVFM() (void*)safemalloc(sizeof(XPVFM)) |
| 602 | #define del_XPVFM(p) Safefree((char*)p) |
| 603 | |
| 604 | #define new_XPVIO() (void*)safemalloc(sizeof(XPVIO)) |
| 605 | #define del_XPVIO(p) Safefree((char*)p) |
| 606 | |
| 607 | bool |
| 608 | sv_upgrade(register SV *sv, U32 mt) |
| 609 | { |
| 610 | char* pv; |
| 611 | U32 cur; |
| 612 | U32 len; |
| 613 | IV iv; |
| 614 | double nv; |
| 615 | MAGIC* magic; |
| 616 | HV* stash; |
| 617 | |
| 618 | if (SvTYPE(sv) == mt) |
| 619 | return TRUE; |
| 620 | |
| 621 | if (mt < SVt_PVIV) |
| 622 | (void)SvOOK_off(sv); |
| 623 | |
| 624 | switch (SvTYPE(sv)) { |
| 625 | case SVt_NULL: |
| 626 | pv = 0; |
| 627 | cur = 0; |
| 628 | len = 0; |
| 629 | iv = 0; |
| 630 | nv = 0.0; |
| 631 | magic = 0; |
| 632 | stash = 0; |
| 633 | break; |
| 634 | case SVt_IV: |
| 635 | pv = 0; |
| 636 | cur = 0; |
| 637 | len = 0; |
| 638 | iv = SvIVX(sv); |
| 639 | nv = (double)SvIVX(sv); |
| 640 | del_XIV(SvANY(sv)); |
| 641 | magic = 0; |
| 642 | stash = 0; |
| 643 | if (mt == SVt_NV) |
| 644 | mt = SVt_PVNV; |
| 645 | else if (mt < SVt_PVIV) |
| 646 | mt = SVt_PVIV; |
| 647 | break; |
| 648 | case SVt_NV: |
| 649 | pv = 0; |
| 650 | cur = 0; |
| 651 | len = 0; |
| 652 | nv = SvNVX(sv); |
| 653 | iv = I_32(nv); |
| 654 | magic = 0; |
| 655 | stash = 0; |
| 656 | del_XNV(SvANY(sv)); |
| 657 | SvANY(sv) = 0; |
| 658 | if (mt < SVt_PVNV) |
| 659 | mt = SVt_PVNV; |
| 660 | break; |
| 661 | case SVt_RV: |
| 662 | pv = (char*)SvRV(sv); |
| 663 | cur = 0; |
| 664 | len = 0; |
| 665 | iv = (IV)pv; |
| 666 | nv = (double)(unsigned long)pv; |
| 667 | del_XRV(SvANY(sv)); |
| 668 | magic = 0; |
| 669 | stash = 0; |
| 670 | break; |
| 671 | case SVt_PV: |
| 672 | pv = SvPVX(sv); |
| 673 | cur = SvCUR(sv); |
| 674 | len = SvLEN(sv); |
| 675 | iv = 0; |
| 676 | nv = 0.0; |
| 677 | magic = 0; |
| 678 | stash = 0; |
| 679 | del_XPV(SvANY(sv)); |
| 680 | if (mt <= SVt_IV) |
| 681 | mt = SVt_PVIV; |
| 682 | else if (mt == SVt_NV) |
| 683 | mt = SVt_PVNV; |
| 684 | break; |
| 685 | case SVt_PVIV: |
| 686 | pv = SvPVX(sv); |
| 687 | cur = SvCUR(sv); |
| 688 | len = SvLEN(sv); |
| 689 | iv = SvIVX(sv); |
| 690 | nv = 0.0; |
| 691 | magic = 0; |
| 692 | stash = 0; |
| 693 | del_XPVIV(SvANY(sv)); |
| 694 | break; |
| 695 | case SVt_PVNV: |
| 696 | pv = SvPVX(sv); |
| 697 | cur = SvCUR(sv); |
| 698 | len = SvLEN(sv); |
| 699 | iv = SvIVX(sv); |
| 700 | nv = SvNVX(sv); |
| 701 | magic = 0; |
| 702 | stash = 0; |
| 703 | del_XPVNV(SvANY(sv)); |
| 704 | break; |
| 705 | case SVt_PVMG: |
| 706 | pv = SvPVX(sv); |
| 707 | cur = SvCUR(sv); |
| 708 | len = SvLEN(sv); |
| 709 | iv = SvIVX(sv); |
| 710 | nv = SvNVX(sv); |
| 711 | magic = SvMAGIC(sv); |
| 712 | stash = SvSTASH(sv); |
| 713 | del_XPVMG(SvANY(sv)); |
| 714 | break; |
| 715 | default: |
| 716 | croak("Can't upgrade that kind of scalar"); |
| 717 | } |
| 718 | |
| 719 | switch (mt) { |
| 720 | case SVt_NULL: |
| 721 | croak("Can't upgrade to undef"); |
| 722 | case SVt_IV: |
| 723 | SvANY(sv) = new_XIV(); |
| 724 | SvIVX(sv) = iv; |
| 725 | break; |
| 726 | case SVt_NV: |
| 727 | SvANY(sv) = new_XNV(); |
| 728 | SvNVX(sv) = nv; |
| 729 | break; |
| 730 | case SVt_RV: |
| 731 | SvANY(sv) = new_XRV(); |
| 732 | SvRV(sv) = (SV*)pv; |
| 733 | break; |
| 734 | case SVt_PV: |
| 735 | SvANY(sv) = new_XPV(); |
| 736 | SvPVX(sv) = pv; |
| 737 | SvCUR(sv) = cur; |
| 738 | SvLEN(sv) = len; |
| 739 | break; |
| 740 | case SVt_PVIV: |
| 741 | SvANY(sv) = new_XPVIV(); |
| 742 | SvPVX(sv) = pv; |
| 743 | SvCUR(sv) = cur; |
| 744 | SvLEN(sv) = len; |
| 745 | SvIVX(sv) = iv; |
| 746 | if (SvNIOK(sv)) |
| 747 | (void)SvIOK_on(sv); |
| 748 | SvNOK_off(sv); |
| 749 | break; |
| 750 | case SVt_PVNV: |
| 751 | SvANY(sv) = new_XPVNV(); |
| 752 | SvPVX(sv) = pv; |
| 753 | SvCUR(sv) = cur; |
| 754 | SvLEN(sv) = len; |
| 755 | SvIVX(sv) = iv; |
| 756 | SvNVX(sv) = nv; |
| 757 | break; |
| 758 | case SVt_PVMG: |
| 759 | SvANY(sv) = new_XPVMG(); |
| 760 | SvPVX(sv) = pv; |
| 761 | SvCUR(sv) = cur; |
| 762 | SvLEN(sv) = len; |
| 763 | SvIVX(sv) = iv; |
| 764 | SvNVX(sv) = nv; |
| 765 | SvMAGIC(sv) = magic; |
| 766 | SvSTASH(sv) = stash; |
| 767 | break; |
| 768 | case SVt_PVLV: |
| 769 | SvANY(sv) = new_XPVLV(); |
| 770 | SvPVX(sv) = pv; |
| 771 | SvCUR(sv) = cur; |
| 772 | SvLEN(sv) = len; |
| 773 | SvIVX(sv) = iv; |
| 774 | SvNVX(sv) = nv; |
| 775 | SvMAGIC(sv) = magic; |
| 776 | SvSTASH(sv) = stash; |
| 777 | LvTARGOFF(sv) = 0; |
| 778 | LvTARGLEN(sv) = 0; |
| 779 | LvTARG(sv) = 0; |
| 780 | LvTYPE(sv) = 0; |
| 781 | break; |
| 782 | case SVt_PVAV: |
| 783 | SvANY(sv) = new_XPVAV(); |
| 784 | if (pv) |
| 785 | Safefree(pv); |
| 786 | SvPVX(sv) = 0; |
| 787 | AvMAX(sv) = -1; |
| 788 | AvFILLp(sv) = -1; |
| 789 | SvIVX(sv) = 0; |
| 790 | SvNVX(sv) = 0.0; |
| 791 | SvMAGIC(sv) = magic; |
| 792 | SvSTASH(sv) = stash; |
| 793 | AvALLOC(sv) = 0; |
| 794 | AvARYLEN(sv) = 0; |
| 795 | AvFLAGS(sv) = 0; |
| 796 | break; |
| 797 | case SVt_PVHV: |
| 798 | SvANY(sv) = new_XPVHV(); |
| 799 | if (pv) |
| 800 | Safefree(pv); |
| 801 | SvPVX(sv) = 0; |
| 802 | HvFILL(sv) = 0; |
| 803 | HvMAX(sv) = 0; |
| 804 | HvKEYS(sv) = 0; |
| 805 | SvNVX(sv) = 0.0; |
| 806 | SvMAGIC(sv) = magic; |
| 807 | SvSTASH(sv) = stash; |
| 808 | HvRITER(sv) = 0; |
| 809 | HvEITER(sv) = 0; |
| 810 | HvPMROOT(sv) = 0; |
| 811 | HvNAME(sv) = 0; |
| 812 | break; |
| 813 | case SVt_PVCV: |
| 814 | SvANY(sv) = new_XPVCV(); |
| 815 | Zero(SvANY(sv), 1, XPVCV); |
| 816 | SvPVX(sv) = pv; |
| 817 | SvCUR(sv) = cur; |
| 818 | SvLEN(sv) = len; |
| 819 | SvIVX(sv) = iv; |
| 820 | SvNVX(sv) = nv; |
| 821 | SvMAGIC(sv) = magic; |
| 822 | SvSTASH(sv) = stash; |
| 823 | break; |
| 824 | case SVt_PVGV: |
| 825 | SvANY(sv) = new_XPVGV(); |
| 826 | SvPVX(sv) = pv; |
| 827 | SvCUR(sv) = cur; |
| 828 | SvLEN(sv) = len; |
| 829 | SvIVX(sv) = iv; |
| 830 | SvNVX(sv) = nv; |
| 831 | SvMAGIC(sv) = magic; |
| 832 | SvSTASH(sv) = stash; |
| 833 | GvGP(sv) = 0; |
| 834 | GvNAME(sv) = 0; |
| 835 | GvNAMELEN(sv) = 0; |
| 836 | GvSTASH(sv) = 0; |
| 837 | GvFLAGS(sv) = 0; |
| 838 | break; |
| 839 | case SVt_PVBM: |
| 840 | SvANY(sv) = new_XPVBM(); |
| 841 | SvPVX(sv) = pv; |
| 842 | SvCUR(sv) = cur; |
| 843 | SvLEN(sv) = len; |
| 844 | SvIVX(sv) = iv; |
| 845 | SvNVX(sv) = nv; |
| 846 | SvMAGIC(sv) = magic; |
| 847 | SvSTASH(sv) = stash; |
| 848 | BmRARE(sv) = 0; |
| 849 | BmUSEFUL(sv) = 0; |
| 850 | BmPREVIOUS(sv) = 0; |
| 851 | break; |
| 852 | case SVt_PVFM: |
| 853 | SvANY(sv) = new_XPVFM(); |
| 854 | Zero(SvANY(sv), 1, XPVFM); |
| 855 | SvPVX(sv) = pv; |
| 856 | SvCUR(sv) = cur; |
| 857 | SvLEN(sv) = len; |
| 858 | SvIVX(sv) = iv; |
| 859 | SvNVX(sv) = nv; |
| 860 | SvMAGIC(sv) = magic; |
| 861 | SvSTASH(sv) = stash; |
| 862 | break; |
| 863 | case SVt_PVIO: |
| 864 | SvANY(sv) = new_XPVIO(); |
| 865 | Zero(SvANY(sv), 1, XPVIO); |
| 866 | SvPVX(sv) = pv; |
| 867 | SvCUR(sv) = cur; |
| 868 | SvLEN(sv) = len; |
| 869 | SvIVX(sv) = iv; |
| 870 | SvNVX(sv) = nv; |
| 871 | SvMAGIC(sv) = magic; |
| 872 | SvSTASH(sv) = stash; |
| 873 | IoPAGE_LEN(sv) = 60; |
| 874 | break; |
| 875 | } |
| 876 | SvFLAGS(sv) &= ~SVTYPEMASK; |
| 877 | SvFLAGS(sv) |= mt; |
| 878 | return TRUE; |
| 879 | } |
| 880 | |
| 881 | #ifdef DEBUGGING |
| 882 | char * |
| 883 | sv_peek(SV *sv) |
| 884 | { |
| 885 | SV *t = sv_newmortal(); |
| 886 | STRLEN prevlen; |
| 887 | int unref = 0; |
| 888 | |
| 889 | sv_setpvn(t, "", 0); |
| 890 | retry: |
| 891 | if (!sv) { |
| 892 | sv_catpv(t, "VOID"); |
| 893 | goto finish; |
| 894 | } |
| 895 | else if (sv == (SV*)0x55555555 || SvTYPE(sv) == 'U') { |
| 896 | sv_catpv(t, "WILD"); |
| 897 | goto finish; |
| 898 | } |
| 899 | else if (sv == &sv_undef || sv == &sv_no || sv == &sv_yes) { |
| 900 | if (sv == &sv_undef) { |
| 901 | sv_catpv(t, "SV_UNDEF"); |
| 902 | if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT| |
| 903 | SVs_GMG|SVs_SMG|SVs_RMG)) && |
| 904 | SvREADONLY(sv)) |
| 905 | goto finish; |
| 906 | } |
| 907 | else if (sv == &sv_no) { |
| 908 | sv_catpv(t, "SV_NO"); |
| 909 | if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT| |
| 910 | SVs_GMG|SVs_SMG|SVs_RMG)) && |
| 911 | !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY| |
| 912 | SVp_POK|SVp_NOK)) && |
| 913 | SvCUR(sv) == 0 && |
| 914 | SvNVX(sv) == 0.0) |
| 915 | goto finish; |
| 916 | } |
| 917 | else { |
| 918 | sv_catpv(t, "SV_YES"); |
| 919 | if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT| |
| 920 | SVs_GMG|SVs_SMG|SVs_RMG)) && |
| 921 | !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY| |
| 922 | SVp_POK|SVp_NOK)) && |
| 923 | SvCUR(sv) == 1 && |
| 924 | SvPVX(sv) && *SvPVX(sv) == '1' && |
| 925 | SvNVX(sv) == 1.0) |
| 926 | goto finish; |
| 927 | } |
| 928 | sv_catpv(t, ":"); |
| 929 | } |
| 930 | else if (SvREFCNT(sv) == 0) { |
| 931 | sv_catpv(t, "("); |
| 932 | unref++; |
| 933 | } |
| 934 | if (SvROK(sv)) { |
| 935 | sv_catpv(t, "\\"); |
| 936 | if (SvCUR(t) + unref > 10) { |
| 937 | SvCUR(t) = unref + 3; |
| 938 | *SvEND(t) = '\0'; |
| 939 | sv_catpv(t, "..."); |
| 940 | goto finish; |
| 941 | } |
| 942 | sv = (SV*)SvRV(sv); |
| 943 | goto retry; |
| 944 | } |
| 945 | switch (SvTYPE(sv)) { |
| 946 | default: |
| 947 | sv_catpv(t, "FREED"); |
| 948 | goto finish; |
| 949 | |
| 950 | case SVt_NULL: |
| 951 | sv_catpv(t, "UNDEF"); |
| 952 | goto finish; |
| 953 | case SVt_IV: |
| 954 | sv_catpv(t, "IV"); |
| 955 | break; |
| 956 | case SVt_NV: |
| 957 | sv_catpv(t, "NV"); |
| 958 | break; |
| 959 | case SVt_RV: |
| 960 | sv_catpv(t, "RV"); |
| 961 | break; |
| 962 | case SVt_PV: |
| 963 | sv_catpv(t, "PV"); |
| 964 | break; |
| 965 | case SVt_PVIV: |
| 966 | sv_catpv(t, "PVIV"); |
| 967 | break; |
| 968 | case SVt_PVNV: |
| 969 | sv_catpv(t, "PVNV"); |
| 970 | break; |
| 971 | case SVt_PVMG: |
| 972 | sv_catpv(t, "PVMG"); |
| 973 | break; |
| 974 | case SVt_PVLV: |
| 975 | sv_catpv(t, "PVLV"); |
| 976 | break; |
| 977 | case SVt_PVAV: |
| 978 | sv_catpv(t, "AV"); |
| 979 | break; |
| 980 | case SVt_PVHV: |
| 981 | sv_catpv(t, "HV"); |
| 982 | break; |
| 983 | case SVt_PVCV: |
| 984 | if (CvGV(sv)) |
| 985 | sv_catpvf(t, "CV(%s)", GvNAME(CvGV(sv))); |
| 986 | else |
| 987 | sv_catpv(t, "CV()"); |
| 988 | goto finish; |
| 989 | case SVt_PVGV: |
| 990 | sv_catpv(t, "GV"); |
| 991 | break; |
| 992 | case SVt_PVBM: |
| 993 | sv_catpv(t, "BM"); |
| 994 | break; |
| 995 | case SVt_PVFM: |
| 996 | sv_catpv(t, "FM"); |
| 997 | break; |
| 998 | case SVt_PVIO: |
| 999 | sv_catpv(t, "IO"); |
| 1000 | break; |
| 1001 | } |
| 1002 | |
| 1003 | if (SvPOKp(sv)) { |
| 1004 | if (!SvPVX(sv)) |
| 1005 | sv_catpv(t, "(null)"); |
| 1006 | if (SvOOK(sv)) |
| 1007 | sv_catpvf(t, "(%ld+\"%.127s\")",(long)SvIVX(sv),SvPVX(sv)); |
| 1008 | else |
| 1009 | sv_catpvf(t, "(\"%.127s\")",SvPVX(sv)); |
| 1010 | } |
| 1011 | else if (SvNOKp(sv)) { |
| 1012 | SET_NUMERIC_STANDARD(); |
| 1013 | sv_catpvf(t, "(%g)",SvNVX(sv)); |
| 1014 | } |
| 1015 | else if (SvIOKp(sv)) |
| 1016 | sv_catpvf(t, "(%ld)",(long)SvIVX(sv)); |
| 1017 | else |
| 1018 | sv_catpv(t, "()"); |
| 1019 | |
| 1020 | finish: |
| 1021 | if (unref) { |
| 1022 | while (unref--) |
| 1023 | sv_catpv(t, ")"); |
| 1024 | } |
| 1025 | return SvPV(t, na); |
| 1026 | } |
| 1027 | #endif |
| 1028 | |
| 1029 | int |
| 1030 | sv_backoff(register SV *sv) |
| 1031 | { |
| 1032 | assert(SvOOK(sv)); |
| 1033 | if (SvIVX(sv)) { |
| 1034 | char *s = SvPVX(sv); |
| 1035 | SvLEN(sv) += SvIVX(sv); |
| 1036 | SvPVX(sv) -= SvIVX(sv); |
| 1037 | SvIV_set(sv, 0); |
| 1038 | Move(s, SvPVX(sv), SvCUR(sv)+1, char); |
| 1039 | } |
| 1040 | SvFLAGS(sv) &= ~SVf_OOK; |
| 1041 | return 0; |
| 1042 | } |
| 1043 | |
| 1044 | char * |
| 1045 | #ifndef DOSISH |
| 1046 | sv_grow(register SV *sv, register I32 newlen) |
| 1047 | #else |
| 1048 | sv_grow(SV* sv, unsigned long newlen) |
| 1049 | #endif |
| 1050 | { |
| 1051 | register char *s; |
| 1052 | |
| 1053 | #ifdef HAS_64K_LIMIT |
| 1054 | if (newlen >= 0x10000) { |
| 1055 | PerlIO_printf(Perl_debug_log, "Allocation too large: %lx\n", newlen); |
| 1056 | my_exit(1); |
| 1057 | } |
| 1058 | #endif /* HAS_64K_LIMIT */ |
| 1059 | if (SvROK(sv)) |
| 1060 | sv_unref(sv); |
| 1061 | if (SvTYPE(sv) < SVt_PV) { |
| 1062 | sv_upgrade(sv, SVt_PV); |
| 1063 | s = SvPVX(sv); |
| 1064 | } |
| 1065 | else if (SvOOK(sv)) { /* pv is offset? */ |
| 1066 | sv_backoff(sv); |
| 1067 | s = SvPVX(sv); |
| 1068 | if (newlen > SvLEN(sv)) |
| 1069 | newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */ |
| 1070 | } |
| 1071 | else |
| 1072 | s = SvPVX(sv); |
| 1073 | if (newlen > SvLEN(sv)) { /* need more room? */ |
| 1074 | if (SvLEN(sv) && s) |
| 1075 | Renew(s,newlen,char); |
| 1076 | else |
| 1077 | New(703,s,newlen,char); |
| 1078 | SvPV_set(sv, s); |
| 1079 | SvLEN_set(sv, newlen); |
| 1080 | } |
| 1081 | return s; |
| 1082 | } |
| 1083 | |
| 1084 | void |
| 1085 | sv_setiv(register SV *sv, IV i) |
| 1086 | { |
| 1087 | sv_check_thinkfirst(sv); |
| 1088 | switch (SvTYPE(sv)) { |
| 1089 | case SVt_NULL: |
| 1090 | sv_upgrade(sv, SVt_IV); |
| 1091 | break; |
| 1092 | case SVt_NV: |
| 1093 | sv_upgrade(sv, SVt_PVNV); |
| 1094 | break; |
| 1095 | case SVt_RV: |
| 1096 | case SVt_PV: |
| 1097 | sv_upgrade(sv, SVt_PVIV); |
| 1098 | break; |
| 1099 | |
| 1100 | case SVt_PVGV: |
| 1101 | if (SvFAKE(sv)) { |
| 1102 | sv_unglob(sv); |
| 1103 | break; |
| 1104 | } |
| 1105 | /* FALL THROUGH */ |
| 1106 | case SVt_PVAV: |
| 1107 | case SVt_PVHV: |
| 1108 | case SVt_PVCV: |
| 1109 | case SVt_PVFM: |
| 1110 | case SVt_PVIO: |
| 1111 | { |
| 1112 | dTHR; |
| 1113 | croak("Can't coerce %s to integer in %s", sv_reftype(sv,0), |
| 1114 | op_desc[op->op_type]); |
| 1115 | } |
| 1116 | } |
| 1117 | (void)SvIOK_only(sv); /* validate number */ |
| 1118 | SvIVX(sv) = i; |
| 1119 | SvTAINT(sv); |
| 1120 | } |
| 1121 | |
| 1122 | void |
| 1123 | sv_setuv(register SV *sv, UV u) |
| 1124 | { |
| 1125 | if (u <= IV_MAX) |
| 1126 | sv_setiv(sv, u); |
| 1127 | else |
| 1128 | sv_setnv(sv, (double)u); |
| 1129 | } |
| 1130 | |
| 1131 | void |
| 1132 | sv_setnv(register SV *sv, double num) |
| 1133 | { |
| 1134 | sv_check_thinkfirst(sv); |
| 1135 | switch (SvTYPE(sv)) { |
| 1136 | case SVt_NULL: |
| 1137 | case SVt_IV: |
| 1138 | sv_upgrade(sv, SVt_NV); |
| 1139 | break; |
| 1140 | case SVt_NV: |
| 1141 | case SVt_RV: |
| 1142 | case SVt_PV: |
| 1143 | case SVt_PVIV: |
| 1144 | sv_upgrade(sv, SVt_PVNV); |
| 1145 | /* FALL THROUGH */ |
| 1146 | case SVt_PVNV: |
| 1147 | case SVt_PVMG: |
| 1148 | case SVt_PVBM: |
| 1149 | case SVt_PVLV: |
| 1150 | if (SvOOK(sv)) |
| 1151 | (void)SvOOK_off(sv); |
| 1152 | break; |
| 1153 | case SVt_PVGV: |
| 1154 | if (SvFAKE(sv)) { |
| 1155 | sv_unglob(sv); |
| 1156 | break; |
| 1157 | } |
| 1158 | /* FALL THROUGH */ |
| 1159 | case SVt_PVAV: |
| 1160 | case SVt_PVHV: |
| 1161 | case SVt_PVCV: |
| 1162 | case SVt_PVFM: |
| 1163 | case SVt_PVIO: |
| 1164 | { |
| 1165 | dTHR; |
| 1166 | croak("Can't coerce %s to number in %s", sv_reftype(sv,0), |
| 1167 | op_name[op->op_type]); |
| 1168 | } |
| 1169 | } |
| 1170 | SvNVX(sv) = num; |
| 1171 | (void)SvNOK_only(sv); /* validate number */ |
| 1172 | SvTAINT(sv); |
| 1173 | } |
| 1174 | |
| 1175 | static void |
| 1176 | not_a_number(SV *sv) |
| 1177 | { |
| 1178 | dTHR; |
| 1179 | char tmpbuf[64]; |
| 1180 | char *d = tmpbuf; |
| 1181 | char *s; |
| 1182 | char *limit = tmpbuf + sizeof(tmpbuf) - 8; |
| 1183 | /* each *s can expand to 4 chars + "...\0", |
| 1184 | i.e. need room for 8 chars */ |
| 1185 | |
| 1186 | for (s = SvPVX(sv); *s && d < limit; s++) { |
| 1187 | int ch = *s & 0xFF; |
| 1188 | if (ch & 128 && !isPRINT_LC(ch)) { |
| 1189 | *d++ = 'M'; |
| 1190 | *d++ = '-'; |
| 1191 | ch &= 127; |
| 1192 | } |
| 1193 | if (ch == '\n') { |
| 1194 | *d++ = '\\'; |
| 1195 | *d++ = 'n'; |
| 1196 | } |
| 1197 | else if (ch == '\r') { |
| 1198 | *d++ = '\\'; |
| 1199 | *d++ = 'r'; |
| 1200 | } |
| 1201 | else if (ch == '\f') { |
| 1202 | *d++ = '\\'; |
| 1203 | *d++ = 'f'; |
| 1204 | } |
| 1205 | else if (ch == '\\') { |
| 1206 | *d++ = '\\'; |
| 1207 | *d++ = '\\'; |
| 1208 | } |
| 1209 | else if (isPRINT_LC(ch)) |
| 1210 | *d++ = ch; |
| 1211 | else { |
| 1212 | *d++ = '^'; |
| 1213 | *d++ = toCTRL(ch); |
| 1214 | } |
| 1215 | } |
| 1216 | if (*s) { |
| 1217 | *d++ = '.'; |
| 1218 | *d++ = '.'; |
| 1219 | *d++ = '.'; |
| 1220 | } |
| 1221 | *d = '\0'; |
| 1222 | |
| 1223 | if (op) |
| 1224 | warn("Argument \"%s\" isn't numeric in %s", tmpbuf, |
| 1225 | op_name[op->op_type]); |
| 1226 | else |
| 1227 | warn("Argument \"%s\" isn't numeric", tmpbuf); |
| 1228 | } |
| 1229 | |
| 1230 | IV |
| 1231 | sv_2iv(register SV *sv) |
| 1232 | { |
| 1233 | if (!sv) |
| 1234 | return 0; |
| 1235 | if (SvGMAGICAL(sv)) { |
| 1236 | mg_get(sv); |
| 1237 | if (SvIOKp(sv)) |
| 1238 | return SvIVX(sv); |
| 1239 | if (SvNOKp(sv)) { |
| 1240 | if (SvNVX(sv) < 0.0) |
| 1241 | return I_V(SvNVX(sv)); |
| 1242 | else |
| 1243 | return (IV) U_V(SvNVX(sv)); |
| 1244 | } |
| 1245 | if (SvPOKp(sv) && SvLEN(sv)) |
| 1246 | return asIV(sv); |
| 1247 | if (!SvROK(sv)) { |
| 1248 | if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) { |
| 1249 | dTHR; |
| 1250 | if (!localizing) |
| 1251 | warn(warn_uninit); |
| 1252 | } |
| 1253 | return 0; |
| 1254 | } |
| 1255 | } |
| 1256 | if (SvTHINKFIRST(sv)) { |
| 1257 | if (SvROK(sv)) { |
| 1258 | #ifdef OVERLOAD |
| 1259 | SV* tmpstr; |
| 1260 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer))) |
| 1261 | return SvIV(tmpstr); |
| 1262 | #endif /* OVERLOAD */ |
| 1263 | return (IV)SvRV(sv); |
| 1264 | } |
| 1265 | if (SvREADONLY(sv)) { |
| 1266 | if (SvNOKp(sv)) { |
| 1267 | if (SvNVX(sv) < 0.0) |
| 1268 | return I_V(SvNVX(sv)); |
| 1269 | else |
| 1270 | return (IV) U_V(SvNVX(sv)); |
| 1271 | } |
| 1272 | if (SvPOKp(sv) && SvLEN(sv)) |
| 1273 | return asIV(sv); |
| 1274 | if (dowarn) |
| 1275 | warn(warn_uninit); |
| 1276 | return 0; |
| 1277 | } |
| 1278 | } |
| 1279 | switch (SvTYPE(sv)) { |
| 1280 | case SVt_NULL: |
| 1281 | sv_upgrade(sv, SVt_IV); |
| 1282 | break; |
| 1283 | case SVt_PV: |
| 1284 | sv_upgrade(sv, SVt_PVIV); |
| 1285 | break; |
| 1286 | case SVt_NV: |
| 1287 | sv_upgrade(sv, SVt_PVNV); |
| 1288 | break; |
| 1289 | } |
| 1290 | if (SvNOKp(sv)) { |
| 1291 | (void)SvIOK_on(sv); |
| 1292 | if (SvNVX(sv) < 0.0) |
| 1293 | SvIVX(sv) = I_V(SvNVX(sv)); |
| 1294 | else |
| 1295 | SvUVX(sv) = U_V(SvNVX(sv)); |
| 1296 | } |
| 1297 | else if (SvPOKp(sv) && SvLEN(sv)) { |
| 1298 | (void)SvIOK_on(sv); |
| 1299 | SvIVX(sv) = asIV(sv); |
| 1300 | } |
| 1301 | else { |
| 1302 | dTHR; |
| 1303 | if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
| 1304 | warn(warn_uninit); |
| 1305 | return 0; |
| 1306 | } |
| 1307 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2iv(%ld)\n", |
| 1308 | (unsigned long)sv,(long)SvIVX(sv))); |
| 1309 | return SvIVX(sv); |
| 1310 | } |
| 1311 | |
| 1312 | UV |
| 1313 | sv_2uv(register SV *sv) |
| 1314 | { |
| 1315 | if (!sv) |
| 1316 | return 0; |
| 1317 | if (SvGMAGICAL(sv)) { |
| 1318 | mg_get(sv); |
| 1319 | if (SvIOKp(sv)) |
| 1320 | return SvUVX(sv); |
| 1321 | if (SvNOKp(sv)) |
| 1322 | return U_V(SvNVX(sv)); |
| 1323 | if (SvPOKp(sv) && SvLEN(sv)) |
| 1324 | return asUV(sv); |
| 1325 | if (!SvROK(sv)) { |
| 1326 | if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) { |
| 1327 | dTHR; |
| 1328 | if (!localizing) |
| 1329 | warn(warn_uninit); |
| 1330 | } |
| 1331 | return 0; |
| 1332 | } |
| 1333 | } |
| 1334 | if (SvTHINKFIRST(sv)) { |
| 1335 | if (SvROK(sv)) { |
| 1336 | #ifdef OVERLOAD |
| 1337 | SV* tmpstr; |
| 1338 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer))) |
| 1339 | return SvUV(tmpstr); |
| 1340 | #endif /* OVERLOAD */ |
| 1341 | return (UV)SvRV(sv); |
| 1342 | } |
| 1343 | if (SvREADONLY(sv)) { |
| 1344 | if (SvNOKp(sv)) { |
| 1345 | return U_V(SvNVX(sv)); |
| 1346 | } |
| 1347 | if (SvPOKp(sv) && SvLEN(sv)) |
| 1348 | return asUV(sv); |
| 1349 | if (dowarn) |
| 1350 | warn(warn_uninit); |
| 1351 | return 0; |
| 1352 | } |
| 1353 | } |
| 1354 | switch (SvTYPE(sv)) { |
| 1355 | case SVt_NULL: |
| 1356 | sv_upgrade(sv, SVt_IV); |
| 1357 | break; |
| 1358 | case SVt_PV: |
| 1359 | sv_upgrade(sv, SVt_PVIV); |
| 1360 | break; |
| 1361 | case SVt_NV: |
| 1362 | sv_upgrade(sv, SVt_PVNV); |
| 1363 | break; |
| 1364 | } |
| 1365 | if (SvNOKp(sv)) { |
| 1366 | (void)SvIOK_on(sv); |
| 1367 | SvUVX(sv) = U_V(SvNVX(sv)); |
| 1368 | } |
| 1369 | else if (SvPOKp(sv) && SvLEN(sv)) { |
| 1370 | (void)SvIOK_on(sv); |
| 1371 | SvUVX(sv) = asUV(sv); |
| 1372 | } |
| 1373 | else { |
| 1374 | if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) { |
| 1375 | dTHR; |
| 1376 | if (!localizing) |
| 1377 | warn(warn_uninit); |
| 1378 | } |
| 1379 | return 0; |
| 1380 | } |
| 1381 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2uv(%lu)\n", |
| 1382 | (unsigned long)sv,SvUVX(sv))); |
| 1383 | return SvUVX(sv); |
| 1384 | } |
| 1385 | |
| 1386 | double |
| 1387 | sv_2nv(register SV *sv) |
| 1388 | { |
| 1389 | if (!sv) |
| 1390 | return 0.0; |
| 1391 | if (SvGMAGICAL(sv)) { |
| 1392 | mg_get(sv); |
| 1393 | if (SvNOKp(sv)) |
| 1394 | return SvNVX(sv); |
| 1395 | if (SvPOKp(sv) && SvLEN(sv)) { |
| 1396 | if (dowarn && !SvIOKp(sv) && !looks_like_number(sv)) |
| 1397 | not_a_number(sv); |
| 1398 | SET_NUMERIC_STANDARD(); |
| 1399 | return atof(SvPVX(sv)); |
| 1400 | } |
| 1401 | if (SvIOKp(sv)) |
| 1402 | return (double)SvIVX(sv); |
| 1403 | if (!SvROK(sv)) { |
| 1404 | if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) { |
| 1405 | dTHR; |
| 1406 | if (!localizing) |
| 1407 | warn(warn_uninit); |
| 1408 | } |
| 1409 | return 0; |
| 1410 | } |
| 1411 | } |
| 1412 | if (SvTHINKFIRST(sv)) { |
| 1413 | if (SvROK(sv)) { |
| 1414 | #ifdef OVERLOAD |
| 1415 | SV* tmpstr; |
| 1416 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer))) |
| 1417 | return SvNV(tmpstr); |
| 1418 | #endif /* OVERLOAD */ |
| 1419 | return (double)(unsigned long)SvRV(sv); |
| 1420 | } |
| 1421 | if (SvREADONLY(sv)) { |
| 1422 | if (SvPOKp(sv) && SvLEN(sv)) { |
| 1423 | if (dowarn && !SvIOKp(sv) && !looks_like_number(sv)) |
| 1424 | not_a_number(sv); |
| 1425 | SET_NUMERIC_STANDARD(); |
| 1426 | return atof(SvPVX(sv)); |
| 1427 | } |
| 1428 | if (SvIOKp(sv)) |
| 1429 | return (double)SvIVX(sv); |
| 1430 | if (dowarn) |
| 1431 | warn(warn_uninit); |
| 1432 | return 0.0; |
| 1433 | } |
| 1434 | } |
| 1435 | if (SvTYPE(sv) < SVt_NV) { |
| 1436 | if (SvTYPE(sv) == SVt_IV) |
| 1437 | sv_upgrade(sv, SVt_PVNV); |
| 1438 | else |
| 1439 | sv_upgrade(sv, SVt_NV); |
| 1440 | DEBUG_c(SET_NUMERIC_STANDARD()); |
| 1441 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
| 1442 | "0x%lx num(%g)\n",(unsigned long)sv,SvNVX(sv))); |
| 1443 | } |
| 1444 | else if (SvTYPE(sv) < SVt_PVNV) |
| 1445 | sv_upgrade(sv, SVt_PVNV); |
| 1446 | if (SvIOKp(sv) && |
| 1447 | (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv))) |
| 1448 | { |
| 1449 | SvNVX(sv) = (double)SvIVX(sv); |
| 1450 | } |
| 1451 | else if (SvPOKp(sv) && SvLEN(sv)) { |
| 1452 | if (dowarn && !SvIOKp(sv) && !looks_like_number(sv)) |
| 1453 | not_a_number(sv); |
| 1454 | SET_NUMERIC_STANDARD(); |
| 1455 | SvNVX(sv) = atof(SvPVX(sv)); |
| 1456 | } |
| 1457 | else { |
| 1458 | dTHR; |
| 1459 | if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
| 1460 | warn(warn_uninit); |
| 1461 | return 0.0; |
| 1462 | } |
| 1463 | SvNOK_on(sv); |
| 1464 | DEBUG_c(SET_NUMERIC_STANDARD()); |
| 1465 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
| 1466 | "0x%lx 2nv(%g)\n",(unsigned long)sv,SvNVX(sv))); |
| 1467 | return SvNVX(sv); |
| 1468 | } |
| 1469 | |
| 1470 | static IV |
| 1471 | asIV(SV *sv) |
| 1472 | { |
| 1473 | I32 numtype = looks_like_number(sv); |
| 1474 | double d; |
| 1475 | |
| 1476 | if (numtype == 1) |
| 1477 | return atol(SvPVX(sv)); |
| 1478 | if (!numtype && dowarn) |
| 1479 | not_a_number(sv); |
| 1480 | SET_NUMERIC_STANDARD(); |
| 1481 | d = atof(SvPVX(sv)); |
| 1482 | if (d < 0.0) |
| 1483 | return I_V(d); |
| 1484 | else |
| 1485 | return (IV) U_V(d); |
| 1486 | } |
| 1487 | |
| 1488 | static UV |
| 1489 | asUV(SV *sv) |
| 1490 | { |
| 1491 | I32 numtype = looks_like_number(sv); |
| 1492 | |
| 1493 | #ifdef HAS_STRTOUL |
| 1494 | if (numtype == 1) |
| 1495 | return strtoul(SvPVX(sv), Null(char**), 10); |
| 1496 | #endif |
| 1497 | if (!numtype && dowarn) |
| 1498 | not_a_number(sv); |
| 1499 | SET_NUMERIC_STANDARD(); |
| 1500 | return U_V(atof(SvPVX(sv))); |
| 1501 | } |
| 1502 | |
| 1503 | I32 |
| 1504 | looks_like_number(SV *sv) |
| 1505 | { |
| 1506 | register char *s; |
| 1507 | register char *send; |
| 1508 | register char *sbegin; |
| 1509 | I32 numtype; |
| 1510 | STRLEN len; |
| 1511 | |
| 1512 | if (SvPOK(sv)) { |
| 1513 | sbegin = SvPVX(sv); |
| 1514 | len = SvCUR(sv); |
| 1515 | } |
| 1516 | else if (SvPOKp(sv)) |
| 1517 | sbegin = SvPV(sv, len); |
| 1518 | else |
| 1519 | return 1; |
| 1520 | send = sbegin + len; |
| 1521 | |
| 1522 | s = sbegin; |
| 1523 | while (isSPACE(*s)) |
| 1524 | s++; |
| 1525 | if (*s == '+' || *s == '-') |
| 1526 | s++; |
| 1527 | |
| 1528 | /* next must be digit or '.' */ |
| 1529 | if (isDIGIT(*s)) { |
| 1530 | do { |
| 1531 | s++; |
| 1532 | } while (isDIGIT(*s)); |
| 1533 | if (*s == '.') { |
| 1534 | s++; |
| 1535 | while (isDIGIT(*s)) /* optional digits after "." */ |
| 1536 | s++; |
| 1537 | } |
| 1538 | } |
| 1539 | else if (*s == '.') { |
| 1540 | s++; |
| 1541 | /* no digits before '.' means we need digits after it */ |
| 1542 | if (isDIGIT(*s)) { |
| 1543 | do { |
| 1544 | s++; |
| 1545 | } while (isDIGIT(*s)); |
| 1546 | } |
| 1547 | else |
| 1548 | return 0; |
| 1549 | } |
| 1550 | else |
| 1551 | return 0; |
| 1552 | |
| 1553 | /* |
| 1554 | * we return 1 if the number can be converted to _integer_ with atol() |
| 1555 | * and 2 if you need (int)atof(). |
| 1556 | */ |
| 1557 | numtype = 1; |
| 1558 | |
| 1559 | /* we can have an optional exponent part */ |
| 1560 | if (*s == 'e' || *s == 'E') { |
| 1561 | numtype = 2; |
| 1562 | s++; |
| 1563 | if (*s == '+' || *s == '-') |
| 1564 | s++; |
| 1565 | if (isDIGIT(*s)) { |
| 1566 | do { |
| 1567 | s++; |
| 1568 | } while (isDIGIT(*s)); |
| 1569 | } |
| 1570 | else |
| 1571 | return 0; |
| 1572 | } |
| 1573 | while (isSPACE(*s)) |
| 1574 | s++; |
| 1575 | if (s >= send) |
| 1576 | return numtype; |
| 1577 | if (len == 10 && memEQ(sbegin, "0 but true", 10)) |
| 1578 | return 1; |
| 1579 | return 0; |
| 1580 | } |
| 1581 | |
| 1582 | char * |
| 1583 | sv_2pv(register SV *sv, STRLEN *lp) |
| 1584 | { |
| 1585 | register char *s; |
| 1586 | int olderrno; |
| 1587 | SV *tsv; |
| 1588 | char tmpbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */ |
| 1589 | |
| 1590 | if (!sv) { |
| 1591 | *lp = 0; |
| 1592 | return ""; |
| 1593 | } |
| 1594 | if (SvGMAGICAL(sv)) { |
| 1595 | mg_get(sv); |
| 1596 | if (SvPOKp(sv)) { |
| 1597 | *lp = SvCUR(sv); |
| 1598 | return SvPVX(sv); |
| 1599 | } |
| 1600 | if (SvIOKp(sv)) { |
| 1601 | (void)sprintf(tmpbuf,"%ld",(long)SvIVX(sv)); |
| 1602 | tsv = Nullsv; |
| 1603 | goto tokensave; |
| 1604 | } |
| 1605 | if (SvNOKp(sv)) { |
| 1606 | SET_NUMERIC_STANDARD(); |
| 1607 | Gconvert(SvNVX(sv), DBL_DIG, 0, tmpbuf); |
| 1608 | tsv = Nullsv; |
| 1609 | goto tokensave; |
| 1610 | } |
| 1611 | if (!SvROK(sv)) { |
| 1612 | if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) { |
| 1613 | dTHR; |
| 1614 | if (!localizing) |
| 1615 | warn(warn_uninit); |
| 1616 | } |
| 1617 | *lp = 0; |
| 1618 | return ""; |
| 1619 | } |
| 1620 | } |
| 1621 | if (SvTHINKFIRST(sv)) { |
| 1622 | if (SvROK(sv)) { |
| 1623 | #ifdef OVERLOAD |
| 1624 | SV* tmpstr; |
| 1625 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string))) |
| 1626 | return SvPV(tmpstr,*lp); |
| 1627 | #endif /* OVERLOAD */ |
| 1628 | sv = (SV*)SvRV(sv); |
| 1629 | if (!sv) |
| 1630 | s = "NULLREF"; |
| 1631 | else { |
| 1632 | switch (SvTYPE(sv)) { |
| 1633 | case SVt_NULL: |
| 1634 | case SVt_IV: |
| 1635 | case SVt_NV: |
| 1636 | case SVt_RV: |
| 1637 | case SVt_PV: |
| 1638 | case SVt_PVIV: |
| 1639 | case SVt_PVNV: |
| 1640 | case SVt_PVBM: |
| 1641 | case SVt_PVMG: s = "SCALAR"; break; |
| 1642 | case SVt_PVLV: s = "LVALUE"; break; |
| 1643 | case SVt_PVAV: s = "ARRAY"; break; |
| 1644 | case SVt_PVHV: s = "HASH"; break; |
| 1645 | case SVt_PVCV: s = "CODE"; break; |
| 1646 | case SVt_PVGV: s = "GLOB"; break; |
| 1647 | case SVt_PVFM: s = "FORMLINE"; break; |
| 1648 | case SVt_PVIO: s = "IO"; break; |
| 1649 | default: s = "UNKNOWN"; break; |
| 1650 | } |
| 1651 | tsv = NEWSV(0,0); |
| 1652 | if (SvOBJECT(sv)) |
| 1653 | sv_setpvf(tsv, "%s=%s", HvNAME(SvSTASH(sv)), s); |
| 1654 | else |
| 1655 | sv_setpv(tsv, s); |
| 1656 | sv_catpvf(tsv, "(0x%lx)", (unsigned long)sv); |
| 1657 | goto tokensaveref; |
| 1658 | } |
| 1659 | *lp = strlen(s); |
| 1660 | return s; |
| 1661 | } |
| 1662 | if (SvREADONLY(sv)) { |
| 1663 | if (SvNOKp(sv)) { |
| 1664 | SET_NUMERIC_STANDARD(); |
| 1665 | Gconvert(SvNVX(sv), DBL_DIG, 0, tmpbuf); |
| 1666 | tsv = Nullsv; |
| 1667 | goto tokensave; |
| 1668 | } |
| 1669 | if (SvIOKp(sv)) { |
| 1670 | (void)sprintf(tmpbuf,"%ld",(long)SvIVX(sv)); |
| 1671 | tsv = Nullsv; |
| 1672 | goto tokensave; |
| 1673 | } |
| 1674 | if (dowarn) |
| 1675 | warn(warn_uninit); |
| 1676 | *lp = 0; |
| 1677 | return ""; |
| 1678 | } |
| 1679 | } |
| 1680 | if (!SvUPGRADE(sv, SVt_PV)) |
| 1681 | return 0; |
| 1682 | if (SvNOKp(sv)) { |
| 1683 | if (SvTYPE(sv) < SVt_PVNV) |
| 1684 | sv_upgrade(sv, SVt_PVNV); |
| 1685 | SvGROW(sv, 28); |
| 1686 | s = SvPVX(sv); |
| 1687 | olderrno = errno; /* some Xenix systems wipe out errno here */ |
| 1688 | #ifdef apollo |
| 1689 | if (SvNVX(sv) == 0.0) |
| 1690 | (void)strcpy(s,"0"); |
| 1691 | else |
| 1692 | #endif /*apollo*/ |
| 1693 | { |
| 1694 | SET_NUMERIC_STANDARD(); |
| 1695 | Gconvert(SvNVX(sv), DBL_DIG, 0, s); |
| 1696 | } |
| 1697 | errno = olderrno; |
| 1698 | #ifdef FIXNEGATIVEZERO |
| 1699 | if (*s == '-' && s[1] == '0' && !s[2]) |
| 1700 | strcpy(s,"0"); |
| 1701 | #endif |
| 1702 | while (*s) s++; |
| 1703 | #ifdef hcx |
| 1704 | if (s[-1] == '.') |
| 1705 | *--s = '\0'; |
| 1706 | #endif |
| 1707 | } |
| 1708 | else if (SvIOKp(sv)) { |
| 1709 | U32 oldIOK = SvIOK(sv); |
| 1710 | if (SvTYPE(sv) < SVt_PVIV) |
| 1711 | sv_upgrade(sv, SVt_PVIV); |
| 1712 | olderrno = errno; /* some Xenix systems wipe out errno here */ |
| 1713 | sv_setpviv(sv, SvIVX(sv)); |
| 1714 | errno = olderrno; |
| 1715 | s = SvEND(sv); |
| 1716 | if (oldIOK) |
| 1717 | SvIOK_on(sv); |
| 1718 | else |
| 1719 | SvIOKp_on(sv); |
| 1720 | } |
| 1721 | else { |
| 1722 | dTHR; |
| 1723 | if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
| 1724 | warn(warn_uninit); |
| 1725 | *lp = 0; |
| 1726 | return ""; |
| 1727 | } |
| 1728 | *lp = s - SvPVX(sv); |
| 1729 | SvCUR_set(sv, *lp); |
| 1730 | SvPOK_on(sv); |
| 1731 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2pv(%s)\n",(unsigned long)sv,SvPVX(sv))); |
| 1732 | return SvPVX(sv); |
| 1733 | |
| 1734 | tokensave: |
| 1735 | if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */ |
| 1736 | /* Sneaky stuff here */ |
| 1737 | |
| 1738 | tokensaveref: |
| 1739 | if (!tsv) |
| 1740 | tsv = newSVpv(tmpbuf, 0); |
| 1741 | sv_2mortal(tsv); |
| 1742 | *lp = SvCUR(tsv); |
| 1743 | return SvPVX(tsv); |
| 1744 | } |
| 1745 | else { |
| 1746 | STRLEN len; |
| 1747 | char *t; |
| 1748 | |
| 1749 | if (tsv) { |
| 1750 | sv_2mortal(tsv); |
| 1751 | t = SvPVX(tsv); |
| 1752 | len = SvCUR(tsv); |
| 1753 | } |
| 1754 | else { |
| 1755 | t = tmpbuf; |
| 1756 | len = strlen(tmpbuf); |
| 1757 | } |
| 1758 | #ifdef FIXNEGATIVEZERO |
| 1759 | if (len == 2 && t[0] == '-' && t[1] == '0') { |
| 1760 | t = "0"; |
| 1761 | len = 1; |
| 1762 | } |
| 1763 | #endif |
| 1764 | (void)SvUPGRADE(sv, SVt_PV); |
| 1765 | *lp = len; |
| 1766 | s = SvGROW(sv, len + 1); |
| 1767 | SvCUR_set(sv, len); |
| 1768 | (void)strcpy(s, t); |
| 1769 | SvPOKp_on(sv); |
| 1770 | return s; |
| 1771 | } |
| 1772 | } |
| 1773 | |
| 1774 | /* This function is only called on magical items */ |
| 1775 | bool |
| 1776 | sv_2bool(register SV *sv) |
| 1777 | { |
| 1778 | if (SvGMAGICAL(sv)) |
| 1779 | mg_get(sv); |
| 1780 | |
| 1781 | if (!SvOK(sv)) |
| 1782 | return 0; |
| 1783 | if (SvROK(sv)) { |
| 1784 | #ifdef OVERLOAD |
| 1785 | { |
| 1786 | dTHR; |
| 1787 | SV* tmpsv; |
| 1788 | if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_))) |
| 1789 | return SvTRUE(tmpsv); |
| 1790 | } |
| 1791 | #endif /* OVERLOAD */ |
| 1792 | return SvRV(sv) != 0; |
| 1793 | } |
| 1794 | if (SvPOKp(sv)) { |
| 1795 | register XPV* Xpvtmp; |
| 1796 | if ((Xpvtmp = (XPV*)SvANY(sv)) && |
| 1797 | (*Xpvtmp->xpv_pv > '0' || |
| 1798 | Xpvtmp->xpv_cur > 1 || |
| 1799 | (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0'))) |
| 1800 | return 1; |
| 1801 | else |
| 1802 | return 0; |
| 1803 | } |
| 1804 | else { |
| 1805 | if (SvIOKp(sv)) |
| 1806 | return SvIVX(sv) != 0; |
| 1807 | else { |
| 1808 | if (SvNOKp(sv)) |
| 1809 | return SvNVX(sv) != 0.0; |
| 1810 | else |
| 1811 | return FALSE; |
| 1812 | } |
| 1813 | } |
| 1814 | } |
| 1815 | |
| 1816 | /* Note: sv_setsv() should not be called with a source string that needs |
| 1817 | * to be reused, since it may destroy the source string if it is marked |
| 1818 | * as temporary. |
| 1819 | */ |
| 1820 | |
| 1821 | void |
| 1822 | sv_setsv(SV *dstr, register SV *sstr) |
| 1823 | { |
| 1824 | dTHR; |
| 1825 | register U32 sflags; |
| 1826 | register int dtype; |
| 1827 | register int stype; |
| 1828 | |
| 1829 | if (sstr == dstr) |
| 1830 | return; |
| 1831 | sv_check_thinkfirst(dstr); |
| 1832 | if (!sstr) |
| 1833 | sstr = &sv_undef; |
| 1834 | stype = SvTYPE(sstr); |
| 1835 | dtype = SvTYPE(dstr); |
| 1836 | |
| 1837 | if (dtype == SVt_PVGV && (SvFLAGS(dstr) & SVf_FAKE)) { |
| 1838 | sv_unglob(dstr); /* so fake GLOB won't perpetuate */ |
| 1839 | sv_setpvn(dstr, "", 0); |
| 1840 | (void)SvPOK_only(dstr); |
| 1841 | dtype = SvTYPE(dstr); |
| 1842 | } |
| 1843 | |
| 1844 | #ifdef OVERLOAD |
| 1845 | SvAMAGIC_off(dstr); |
| 1846 | #endif /* OVERLOAD */ |
| 1847 | /* There's a lot of redundancy below but we're going for speed here */ |
| 1848 | |
| 1849 | switch (stype) { |
| 1850 | case SVt_NULL: |
| 1851 | (void)SvOK_off(dstr); |
| 1852 | return; |
| 1853 | case SVt_IV: |
| 1854 | if (dtype != SVt_IV && dtype < SVt_PVIV) { |
| 1855 | if (dtype < SVt_IV) |
| 1856 | sv_upgrade(dstr, SVt_IV); |
| 1857 | else if (dtype == SVt_NV) |
| 1858 | sv_upgrade(dstr, SVt_PVNV); |
| 1859 | else |
| 1860 | sv_upgrade(dstr, SVt_PVIV); |
| 1861 | } |
| 1862 | break; |
| 1863 | case SVt_NV: |
| 1864 | if (dtype != SVt_NV && dtype < SVt_PVNV) { |
| 1865 | if (dtype < SVt_NV) |
| 1866 | sv_upgrade(dstr, SVt_NV); |
| 1867 | else |
| 1868 | sv_upgrade(dstr, SVt_PVNV); |
| 1869 | } |
| 1870 | break; |
| 1871 | case SVt_RV: |
| 1872 | if (dtype < SVt_RV) |
| 1873 | sv_upgrade(dstr, SVt_RV); |
| 1874 | else if (dtype == SVt_PVGV && |
| 1875 | SvTYPE(SvRV(sstr)) == SVt_PVGV) { |
| 1876 | sstr = SvRV(sstr); |
| 1877 | if (sstr == dstr) { |
| 1878 | if (curcop->cop_stash != GvSTASH(dstr)) |
| 1879 | GvIMPORTED_on(dstr); |
| 1880 | GvMULTI_on(dstr); |
| 1881 | return; |
| 1882 | } |
| 1883 | goto glob_assign; |
| 1884 | } |
| 1885 | break; |
| 1886 | case SVt_PV: |
| 1887 | case SVt_PVFM: |
| 1888 | if (dtype < SVt_PV) |
| 1889 | sv_upgrade(dstr, SVt_PV); |
| 1890 | break; |
| 1891 | case SVt_PVIV: |
| 1892 | if (dtype < SVt_PVIV) |
| 1893 | sv_upgrade(dstr, SVt_PVIV); |
| 1894 | break; |
| 1895 | case SVt_PVNV: |
| 1896 | if (dtype < SVt_PVNV) |
| 1897 | sv_upgrade(dstr, SVt_PVNV); |
| 1898 | break; |
| 1899 | |
| 1900 | case SVt_PVAV: |
| 1901 | case SVt_PVHV: |
| 1902 | case SVt_PVCV: |
| 1903 | case SVt_PVIO: |
| 1904 | if (op) |
| 1905 | croak("Bizarre copy of %s in %s", sv_reftype(sstr, 0), |
| 1906 | op_name[op->op_type]); |
| 1907 | else |
| 1908 | croak("Bizarre copy of %s", sv_reftype(sstr, 0)); |
| 1909 | break; |
| 1910 | |
| 1911 | case SVt_PVGV: |
| 1912 | if (dtype <= SVt_PVGV) { |
| 1913 | glob_assign: |
| 1914 | if (dtype != SVt_PVGV) { |
| 1915 | char *name = GvNAME(sstr); |
| 1916 | STRLEN len = GvNAMELEN(sstr); |
| 1917 | sv_upgrade(dstr, SVt_PVGV); |
| 1918 | sv_magic(dstr, dstr, '*', name, len); |
| 1919 | GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr)); |
| 1920 | GvNAME(dstr) = savepvn(name, len); |
| 1921 | GvNAMELEN(dstr) = len; |
| 1922 | SvFAKE_on(dstr); /* can coerce to non-glob */ |
| 1923 | } |
| 1924 | /* ahem, death to those who redefine active sort subs */ |
| 1925 | else if (curstack == sortstack |
| 1926 | && GvCV(dstr) && sortcop == CvSTART(GvCV(dstr))) |
| 1927 | croak("Can't redefine active sort subroutine %s", |
| 1928 | GvNAME(dstr)); |
| 1929 | (void)SvOK_off(dstr); |
| 1930 | GvINTRO_off(dstr); /* one-shot flag */ |
| 1931 | gp_free((GV*)dstr); |
| 1932 | GvGP(dstr) = gp_ref(GvGP(sstr)); |
| 1933 | SvTAINT(dstr); |
| 1934 | if (curcop->cop_stash != GvSTASH(dstr)) |
| 1935 | GvIMPORTED_on(dstr); |
| 1936 | GvMULTI_on(dstr); |
| 1937 | return; |
| 1938 | } |
| 1939 | /* FALL THROUGH */ |
| 1940 | |
| 1941 | default: |
| 1942 | if (SvGMAGICAL(sstr)) { |
| 1943 | mg_get(sstr); |
| 1944 | if (SvTYPE(sstr) != stype) { |
| 1945 | stype = SvTYPE(sstr); |
| 1946 | if (stype == SVt_PVGV && dtype <= SVt_PVGV) |
| 1947 | goto glob_assign; |
| 1948 | } |
| 1949 | } |
| 1950 | if (dtype < stype) |
| 1951 | sv_upgrade(dstr, stype); |
| 1952 | } |
| 1953 | |
| 1954 | sflags = SvFLAGS(sstr); |
| 1955 | |
| 1956 | if (sflags & SVf_ROK) { |
| 1957 | if (dtype >= SVt_PV) { |
| 1958 | if (dtype == SVt_PVGV) { |
| 1959 | dTHR; |
| 1960 | SV *sref = SvREFCNT_inc(SvRV(sstr)); |
| 1961 | SV *dref = 0; |
| 1962 | int intro = GvINTRO(dstr); |
| 1963 | |
| 1964 | if (intro) { |
| 1965 | GP *gp; |
| 1966 | GvGP(dstr)->gp_refcnt--; |
| 1967 | GvINTRO_off(dstr); /* one-shot flag */ |
| 1968 | Newz(602,gp, 1, GP); |
| 1969 | GvGP(dstr) = gp_ref(gp); |
| 1970 | GvSV(dstr) = NEWSV(72,0); |
| 1971 | GvLINE(dstr) = curcop->cop_line; |
| 1972 | GvEGV(dstr) = (GV*)dstr; |
| 1973 | } |
| 1974 | GvMULTI_on(dstr); |
| 1975 | switch (SvTYPE(sref)) { |
| 1976 | case SVt_PVAV: |
| 1977 | if (intro) |
| 1978 | SAVESPTR(GvAV(dstr)); |
| 1979 | else |
| 1980 | dref = (SV*)GvAV(dstr); |
| 1981 | GvAV(dstr) = (AV*)sref; |
| 1982 | if (curcop->cop_stash != GvSTASH(dstr)) |
| 1983 | GvIMPORTED_AV_on(dstr); |
| 1984 | break; |
| 1985 | case SVt_PVHV: |
| 1986 | if (intro) |
| 1987 | SAVESPTR(GvHV(dstr)); |
| 1988 | else |
| 1989 | dref = (SV*)GvHV(dstr); |
| 1990 | GvHV(dstr) = (HV*)sref; |
| 1991 | if (curcop->cop_stash != GvSTASH(dstr)) |
| 1992 | GvIMPORTED_HV_on(dstr); |
| 1993 | break; |
| 1994 | case SVt_PVCV: |
| 1995 | if (intro) { |
| 1996 | if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) { |
| 1997 | SvREFCNT_dec(GvCV(dstr)); |
| 1998 | GvCV(dstr) = Nullcv; |
| 1999 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
| 2000 | sub_generation++; |
| 2001 | } |
| 2002 | SAVESPTR(GvCV(dstr)); |
| 2003 | } |
| 2004 | else |
| 2005 | dref = (SV*)GvCV(dstr); |
| 2006 | if (GvCV(dstr) != (CV*)sref) { |
| 2007 | CV* cv = GvCV(dstr); |
| 2008 | if (cv) { |
| 2009 | if (!GvCVGEN((GV*)dstr) && |
| 2010 | (CvROOT(cv) || CvXSUB(cv))) |
| 2011 | { |
| 2012 | /* ahem, death to those who redefine |
| 2013 | * active sort subs */ |
| 2014 | if (curstack == sortstack && |
| 2015 | sortcop == CvSTART(cv)) |
| 2016 | croak( |
| 2017 | "Can't redefine active sort subroutine %s", |
| 2018 | GvENAME((GV*)dstr)); |
| 2019 | if (cv_const_sv(cv)) |
| 2020 | warn("Constant subroutine %s redefined", |
| 2021 | GvENAME((GV*)dstr)); |
| 2022 | else if (dowarn) |
| 2023 | warn("Subroutine %s redefined", |
| 2024 | GvENAME((GV*)dstr)); |
| 2025 | } |
| 2026 | cv_ckproto(cv, (GV*)dstr, |
| 2027 | SvPOK(sref) ? SvPVX(sref) : Nullch); |
| 2028 | } |
| 2029 | GvCV(dstr) = (CV*)sref; |
| 2030 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
| 2031 | GvASSUMECV_on(dstr); |
| 2032 | sub_generation++; |
| 2033 | } |
| 2034 | if (curcop->cop_stash != GvSTASH(dstr)) |
| 2035 | GvIMPORTED_CV_on(dstr); |
| 2036 | break; |
| 2037 | case SVt_PVIO: |
| 2038 | if (intro) |
| 2039 | SAVESPTR(GvIOp(dstr)); |
| 2040 | else |
| 2041 | dref = (SV*)GvIOp(dstr); |
| 2042 | GvIOp(dstr) = (IO*)sref; |
| 2043 | break; |
| 2044 | default: |
| 2045 | if (intro) |
| 2046 | SAVESPTR(GvSV(dstr)); |
| 2047 | else |
| 2048 | dref = (SV*)GvSV(dstr); |
| 2049 | GvSV(dstr) = sref; |
| 2050 | if (curcop->cop_stash != GvSTASH(dstr)) |
| 2051 | GvIMPORTED_SV_on(dstr); |
| 2052 | break; |
| 2053 | } |
| 2054 | if (dref) |
| 2055 | SvREFCNT_dec(dref); |
| 2056 | if (intro) |
| 2057 | SAVEFREESV(sref); |
| 2058 | SvTAINT(dstr); |
| 2059 | return; |
| 2060 | } |
| 2061 | if (SvPVX(dstr)) { |
| 2062 | (void)SvOOK_off(dstr); /* backoff */ |
| 2063 | Safefree(SvPVX(dstr)); |
| 2064 | SvLEN(dstr)=SvCUR(dstr)=0; |
| 2065 | } |
| 2066 | } |
| 2067 | (void)SvOK_off(dstr); |
| 2068 | SvRV(dstr) = SvREFCNT_inc(SvRV(sstr)); |
| 2069 | SvROK_on(dstr); |
| 2070 | if (sflags & SVp_NOK) { |
| 2071 | SvNOK_on(dstr); |
| 2072 | SvNVX(dstr) = SvNVX(sstr); |
| 2073 | } |
| 2074 | if (sflags & SVp_IOK) { |
| 2075 | (void)SvIOK_on(dstr); |
| 2076 | SvIVX(dstr) = SvIVX(sstr); |
| 2077 | } |
| 2078 | #ifdef OVERLOAD |
| 2079 | if (SvAMAGIC(sstr)) { |
| 2080 | SvAMAGIC_on(dstr); |
| 2081 | } |
| 2082 | #endif /* OVERLOAD */ |
| 2083 | } |
| 2084 | else if (sflags & SVp_POK) { |
| 2085 | |
| 2086 | /* |
| 2087 | * Check to see if we can just swipe the string. If so, it's a |
| 2088 | * possible small lose on short strings, but a big win on long ones. |
| 2089 | * It might even be a win on short strings if SvPVX(dstr) |
| 2090 | * has to be allocated and SvPVX(sstr) has to be freed. |
| 2091 | */ |
| 2092 | |
| 2093 | if (SvTEMP(sstr) && /* slated for free anyway? */ |
| 2094 | SvREFCNT(sstr) == 1 && /* and no other references to it? */ |
| 2095 | !(sflags & SVf_OOK)) /* and not involved in OOK hack? */ |
| 2096 | { |
| 2097 | if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */ |
| 2098 | if (SvOOK(dstr)) { |
| 2099 | SvFLAGS(dstr) &= ~SVf_OOK; |
| 2100 | Safefree(SvPVX(dstr) - SvIVX(dstr)); |
| 2101 | } |
| 2102 | else |
| 2103 | Safefree(SvPVX(dstr)); |
| 2104 | } |
| 2105 | (void)SvPOK_only(dstr); |
| 2106 | SvPV_set(dstr, SvPVX(sstr)); |
| 2107 | SvLEN_set(dstr, SvLEN(sstr)); |
| 2108 | SvCUR_set(dstr, SvCUR(sstr)); |
| 2109 | SvTEMP_off(dstr); |
| 2110 | (void)SvOK_off(sstr); |
| 2111 | SvPV_set(sstr, Nullch); |
| 2112 | SvLEN_set(sstr, 0); |
| 2113 | SvCUR_set(sstr, 0); |
| 2114 | SvTEMP_off(sstr); |
| 2115 | } |
| 2116 | else { /* have to copy actual string */ |
| 2117 | STRLEN len = SvCUR(sstr); |
| 2118 | |
| 2119 | SvGROW(dstr, len + 1); /* inlined from sv_setpvn */ |
| 2120 | Move(SvPVX(sstr),SvPVX(dstr),len,char); |
| 2121 | SvCUR_set(dstr, len); |
| 2122 | *SvEND(dstr) = '\0'; |
| 2123 | (void)SvPOK_only(dstr); |
| 2124 | } |
| 2125 | /*SUPPRESS 560*/ |
| 2126 | if (sflags & SVp_NOK) { |
| 2127 | SvNOK_on(dstr); |
| 2128 | SvNVX(dstr) = SvNVX(sstr); |
| 2129 | } |
| 2130 | if (sflags & SVp_IOK) { |
| 2131 | (void)SvIOK_on(dstr); |
| 2132 | SvIVX(dstr) = SvIVX(sstr); |
| 2133 | } |
| 2134 | } |
| 2135 | else if (sflags & SVp_NOK) { |
| 2136 | SvNVX(dstr) = SvNVX(sstr); |
| 2137 | (void)SvNOK_only(dstr); |
| 2138 | if (SvIOK(sstr)) { |
| 2139 | (void)SvIOK_on(dstr); |
| 2140 | SvIVX(dstr) = SvIVX(sstr); |
| 2141 | } |
| 2142 | } |
| 2143 | else if (sflags & SVp_IOK) { |
| 2144 | (void)SvIOK_only(dstr); |
| 2145 | SvIVX(dstr) = SvIVX(sstr); |
| 2146 | } |
| 2147 | else { |
| 2148 | (void)SvOK_off(dstr); |
| 2149 | } |
| 2150 | SvTAINT(dstr); |
| 2151 | } |
| 2152 | |
| 2153 | void |
| 2154 | sv_setpvn(register SV *sv, register const char *ptr, register STRLEN len) |
| 2155 | { |
| 2156 | assert(len >= 0); /* STRLEN is probably unsigned, so this may |
| 2157 | elicit a warning, but it won't hurt. */ |
| 2158 | sv_check_thinkfirst(sv); |
| 2159 | if (!ptr) { |
| 2160 | (void)SvOK_off(sv); |
| 2161 | return; |
| 2162 | } |
| 2163 | if (SvTYPE(sv) >= SVt_PV) { |
| 2164 | if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) |
| 2165 | sv_unglob(sv); |
| 2166 | } |
| 2167 | else if (!sv_upgrade(sv, SVt_PV)) |
| 2168 | return; |
| 2169 | SvGROW(sv, len + 1); |
| 2170 | Move(ptr,SvPVX(sv),len,char); |
| 2171 | SvCUR_set(sv, len); |
| 2172 | *SvEND(sv) = '\0'; |
| 2173 | (void)SvPOK_only(sv); /* validate pointer */ |
| 2174 | SvTAINT(sv); |
| 2175 | } |
| 2176 | |
| 2177 | void |
| 2178 | sv_setpv(register SV *sv, register const char *ptr) |
| 2179 | { |
| 2180 | register STRLEN len; |
| 2181 | |
| 2182 | sv_check_thinkfirst(sv); |
| 2183 | if (!ptr) { |
| 2184 | (void)SvOK_off(sv); |
| 2185 | return; |
| 2186 | } |
| 2187 | len = strlen(ptr); |
| 2188 | if (SvTYPE(sv) >= SVt_PV) { |
| 2189 | if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) |
| 2190 | sv_unglob(sv); |
| 2191 | } |
| 2192 | else if (!sv_upgrade(sv, SVt_PV)) |
| 2193 | return; |
| 2194 | SvGROW(sv, len + 1); |
| 2195 | Move(ptr,SvPVX(sv),len+1,char); |
| 2196 | SvCUR_set(sv, len); |
| 2197 | (void)SvPOK_only(sv); /* validate pointer */ |
| 2198 | SvTAINT(sv); |
| 2199 | } |
| 2200 | |
| 2201 | void |
| 2202 | sv_usepvn(register SV *sv, register char *ptr, register STRLEN len) |
| 2203 | { |
| 2204 | sv_check_thinkfirst(sv); |
| 2205 | if (!SvUPGRADE(sv, SVt_PV)) |
| 2206 | return; |
| 2207 | if (!ptr) { |
| 2208 | (void)SvOK_off(sv); |
| 2209 | return; |
| 2210 | } |
| 2211 | if (SvPVX(sv)) |
| 2212 | Safefree(SvPVX(sv)); |
| 2213 | Renew(ptr, len+1, char); |
| 2214 | SvPVX(sv) = ptr; |
| 2215 | SvCUR_set(sv, len); |
| 2216 | SvLEN_set(sv, len+1); |
| 2217 | *SvEND(sv) = '\0'; |
| 2218 | (void)SvPOK_only(sv); /* validate pointer */ |
| 2219 | SvTAINT(sv); |
| 2220 | } |
| 2221 | |
| 2222 | static void |
| 2223 | sv_check_thinkfirst(register SV *sv) |
| 2224 | { |
| 2225 | if (SvTHINKFIRST(sv)) { |
| 2226 | if (SvREADONLY(sv)) { |
| 2227 | dTHR; |
| 2228 | if (curcop != &compiling) |
| 2229 | croak(no_modify); |
| 2230 | } |
| 2231 | if (SvROK(sv)) |
| 2232 | sv_unref(sv); |
| 2233 | } |
| 2234 | } |
| 2235 | |
| 2236 | void |
| 2237 | sv_chop(register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */ |
| 2238 | |
| 2239 | |
| 2240 | { |
| 2241 | register STRLEN delta; |
| 2242 | |
| 2243 | if (!ptr || !SvPOKp(sv)) |
| 2244 | return; |
| 2245 | sv_check_thinkfirst(sv); |
| 2246 | if (SvTYPE(sv) < SVt_PVIV) |
| 2247 | sv_upgrade(sv,SVt_PVIV); |
| 2248 | |
| 2249 | if (!SvOOK(sv)) { |
| 2250 | SvIVX(sv) = 0; |
| 2251 | SvFLAGS(sv) |= SVf_OOK; |
| 2252 | } |
| 2253 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK); |
| 2254 | delta = ptr - SvPVX(sv); |
| 2255 | SvLEN(sv) -= delta; |
| 2256 | SvCUR(sv) -= delta; |
| 2257 | SvPVX(sv) += delta; |
| 2258 | SvIVX(sv) += delta; |
| 2259 | } |
| 2260 | |
| 2261 | void |
| 2262 | sv_catpvn(register SV *sv, register char *ptr, register STRLEN len) |
| 2263 | { |
| 2264 | STRLEN tlen; |
| 2265 | char *junk; |
| 2266 | |
| 2267 | junk = SvPV_force(sv, tlen); |
| 2268 | SvGROW(sv, tlen + len + 1); |
| 2269 | if (ptr == junk) |
| 2270 | ptr = SvPVX(sv); |
| 2271 | Move(ptr,SvPVX(sv)+tlen,len,char); |
| 2272 | SvCUR(sv) += len; |
| 2273 | *SvEND(sv) = '\0'; |
| 2274 | (void)SvPOK_only(sv); /* validate pointer */ |
| 2275 | SvTAINT(sv); |
| 2276 | } |
| 2277 | |
| 2278 | void |
| 2279 | sv_catsv(SV *dstr, register SV *sstr) |
| 2280 | { |
| 2281 | char *s; |
| 2282 | STRLEN len; |
| 2283 | if (!sstr) |
| 2284 | return; |
| 2285 | if (s = SvPV(sstr, len)) |
| 2286 | sv_catpvn(dstr,s,len); |
| 2287 | } |
| 2288 | |
| 2289 | void |
| 2290 | sv_catpv(register SV *sv, register char *ptr) |
| 2291 | { |
| 2292 | register STRLEN len; |
| 2293 | STRLEN tlen; |
| 2294 | char *junk; |
| 2295 | |
| 2296 | if (!ptr) |
| 2297 | return; |
| 2298 | junk = SvPV_force(sv, tlen); |
| 2299 | len = strlen(ptr); |
| 2300 | SvGROW(sv, tlen + len + 1); |
| 2301 | if (ptr == junk) |
| 2302 | ptr = SvPVX(sv); |
| 2303 | Move(ptr,SvPVX(sv)+tlen,len+1,char); |
| 2304 | SvCUR(sv) += len; |
| 2305 | (void)SvPOK_only(sv); /* validate pointer */ |
| 2306 | SvTAINT(sv); |
| 2307 | } |
| 2308 | |
| 2309 | SV * |
| 2310 | #ifdef LEAKTEST |
| 2311 | newSV(x,len) |
| 2312 | I32 x; |
| 2313 | #else |
| 2314 | newSV(STRLEN len) |
| 2315 | #endif |
| 2316 | |
| 2317 | { |
| 2318 | register SV *sv; |
| 2319 | |
| 2320 | new_SV(sv); |
| 2321 | SvANY(sv) = 0; |
| 2322 | SvREFCNT(sv) = 1; |
| 2323 | SvFLAGS(sv) = 0; |
| 2324 | if (len) { |
| 2325 | sv_upgrade(sv, SVt_PV); |
| 2326 | SvGROW(sv, len + 1); |
| 2327 | } |
| 2328 | return sv; |
| 2329 | } |
| 2330 | |
| 2331 | /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */ |
| 2332 | |
| 2333 | void |
| 2334 | sv_magic(register SV *sv, SV *obj, int how, char *name, I32 namlen) |
| 2335 | { |
| 2336 | MAGIC* mg; |
| 2337 | |
| 2338 | if (SvREADONLY(sv)) { |
| 2339 | dTHR; |
| 2340 | if (curcop != &compiling && !strchr("gBf", how)) |
| 2341 | croak(no_modify); |
| 2342 | } |
| 2343 | if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) { |
| 2344 | if (SvMAGIC(sv) && (mg = mg_find(sv, how))) { |
| 2345 | if (how == 't') |
| 2346 | mg->mg_len |= 1; |
| 2347 | return; |
| 2348 | } |
| 2349 | } |
| 2350 | else { |
| 2351 | if (!SvUPGRADE(sv, SVt_PVMG)) |
| 2352 | return; |
| 2353 | } |
| 2354 | Newz(702,mg, 1, MAGIC); |
| 2355 | mg->mg_moremagic = SvMAGIC(sv); |
| 2356 | |
| 2357 | SvMAGIC(sv) = mg; |
| 2358 | if (!obj || obj == sv || how == '#' || how == 'r') |
| 2359 | mg->mg_obj = obj; |
| 2360 | else { |
| 2361 | dTHR; |
| 2362 | mg->mg_obj = SvREFCNT_inc(obj); |
| 2363 | mg->mg_flags |= MGf_REFCOUNTED; |
| 2364 | } |
| 2365 | mg->mg_type = how; |
| 2366 | mg->mg_len = namlen; |
| 2367 | if (name) |
| 2368 | if (namlen >= 0) |
| 2369 | mg->mg_ptr = savepvn(name, namlen); |
| 2370 | else if (namlen == HEf_SVKEY) |
| 2371 | mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name); |
| 2372 | |
| 2373 | switch (how) { |
| 2374 | case 0: |
| 2375 | mg->mg_virtual = &vtbl_sv; |
| 2376 | break; |
| 2377 | #ifdef OVERLOAD |
| 2378 | case 'A': |
| 2379 | mg->mg_virtual = &vtbl_amagic; |
| 2380 | break; |
| 2381 | case 'a': |
| 2382 | mg->mg_virtual = &vtbl_amagicelem; |
| 2383 | break; |
| 2384 | case 'c': |
| 2385 | mg->mg_virtual = 0; |
| 2386 | break; |
| 2387 | #endif /* OVERLOAD */ |
| 2388 | case 'B': |
| 2389 | mg->mg_virtual = &vtbl_bm; |
| 2390 | break; |
| 2391 | case 'E': |
| 2392 | mg->mg_virtual = &vtbl_env; |
| 2393 | break; |
| 2394 | case 'f': |
| 2395 | mg->mg_virtual = &vtbl_fm; |
| 2396 | break; |
| 2397 | case 'e': |
| 2398 | mg->mg_virtual = &vtbl_envelem; |
| 2399 | break; |
| 2400 | case 'g': |
| 2401 | mg->mg_virtual = &vtbl_mglob; |
| 2402 | break; |
| 2403 | case 'I': |
| 2404 | mg->mg_virtual = &vtbl_isa; |
| 2405 | break; |
| 2406 | case 'i': |
| 2407 | mg->mg_virtual = &vtbl_isaelem; |
| 2408 | break; |
| 2409 | case 'k': |
| 2410 | mg->mg_virtual = &vtbl_nkeys; |
| 2411 | break; |
| 2412 | case 'L': |
| 2413 | SvRMAGICAL_on(sv); |
| 2414 | mg->mg_virtual = 0; |
| 2415 | break; |
| 2416 | case 'l': |
| 2417 | mg->mg_virtual = &vtbl_dbline; |
| 2418 | break; |
| 2419 | #ifdef USE_THREADS |
| 2420 | case 'm': |
| 2421 | mg->mg_virtual = &vtbl_mutex; |
| 2422 | break; |
| 2423 | #endif /* USE_THREADS */ |
| 2424 | #ifdef USE_LOCALE_COLLATE |
| 2425 | case 'o': |
| 2426 | mg->mg_virtual = &vtbl_collxfrm; |
| 2427 | break; |
| 2428 | #endif /* USE_LOCALE_COLLATE */ |
| 2429 | case 'P': |
| 2430 | mg->mg_virtual = &vtbl_pack; |
| 2431 | break; |
| 2432 | case 'p': |
| 2433 | case 'q': |
| 2434 | mg->mg_virtual = &vtbl_packelem; |
| 2435 | break; |
| 2436 | case 'r': |
| 2437 | mg->mg_virtual = &vtbl_regexp; |
| 2438 | break; |
| 2439 | case 'S': |
| 2440 | mg->mg_virtual = &vtbl_sig; |
| 2441 | break; |
| 2442 | case 's': |
| 2443 | mg->mg_virtual = &vtbl_sigelem; |
| 2444 | break; |
| 2445 | case 't': |
| 2446 | mg->mg_virtual = &vtbl_taint; |
| 2447 | mg->mg_len = 1; |
| 2448 | break; |
| 2449 | case 'U': |
| 2450 | mg->mg_virtual = &vtbl_uvar; |
| 2451 | break; |
| 2452 | case 'v': |
| 2453 | mg->mg_virtual = &vtbl_vec; |
| 2454 | break; |
| 2455 | case 'x': |
| 2456 | mg->mg_virtual = &vtbl_substr; |
| 2457 | break; |
| 2458 | case 'y': |
| 2459 | mg->mg_virtual = &vtbl_defelem; |
| 2460 | break; |
| 2461 | case '*': |
| 2462 | mg->mg_virtual = &vtbl_glob; |
| 2463 | break; |
| 2464 | case '#': |
| 2465 | mg->mg_virtual = &vtbl_arylen; |
| 2466 | break; |
| 2467 | case '.': |
| 2468 | mg->mg_virtual = &vtbl_pos; |
| 2469 | break; |
| 2470 | case '~': /* Reserved for use by extensions not perl internals. */ |
| 2471 | /* Useful for attaching extension internal data to perl vars. */ |
| 2472 | /* Note that multiple extensions may clash if magical scalars */ |
| 2473 | /* etc holding private data from one are passed to another. */ |
| 2474 | SvRMAGICAL_on(sv); |
| 2475 | break; |
| 2476 | default: |
| 2477 | croak("Don't know how to handle magic of type '%c'", how); |
| 2478 | } |
| 2479 | mg_magical(sv); |
| 2480 | if (SvGMAGICAL(sv)) |
| 2481 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); |
| 2482 | } |
| 2483 | |
| 2484 | int |
| 2485 | sv_unmagic(SV *sv, int type) |
| 2486 | { |
| 2487 | MAGIC* mg; |
| 2488 | MAGIC** mgp; |
| 2489 | if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv)) |
| 2490 | return 0; |
| 2491 | mgp = &SvMAGIC(sv); |
| 2492 | for (mg = *mgp; mg; mg = *mgp) { |
| 2493 | if (mg->mg_type == type) { |
| 2494 | MGVTBL* vtbl = mg->mg_virtual; |
| 2495 | *mgp = mg->mg_moremagic; |
| 2496 | if (vtbl && vtbl->svt_free) |
| 2497 | (*vtbl->svt_free)(sv, mg); |
| 2498 | if (mg->mg_ptr && mg->mg_type != 'g') |
| 2499 | if (mg->mg_len >= 0) |
| 2500 | Safefree(mg->mg_ptr); |
| 2501 | else if (mg->mg_len == HEf_SVKEY) |
| 2502 | SvREFCNT_dec((SV*)mg->mg_ptr); |
| 2503 | if (mg->mg_flags & MGf_REFCOUNTED) |
| 2504 | SvREFCNT_dec(mg->mg_obj); |
| 2505 | Safefree(mg); |
| 2506 | } |
| 2507 | else |
| 2508 | mgp = &mg->mg_moremagic; |
| 2509 | } |
| 2510 | if (!SvMAGIC(sv)) { |
| 2511 | SvMAGICAL_off(sv); |
| 2512 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
| 2513 | } |
| 2514 | |
| 2515 | return 0; |
| 2516 | } |
| 2517 | |
| 2518 | void |
| 2519 | sv_insert(SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen) |
| 2520 | { |
| 2521 | register char *big; |
| 2522 | register char *mid; |
| 2523 | register char *midend; |
| 2524 | register char *bigend; |
| 2525 | register I32 i; |
| 2526 | |
| 2527 | if (!bigstr) |
| 2528 | croak("Can't modify non-existent substring"); |
| 2529 | SvPV_force(bigstr, na); |
| 2530 | |
| 2531 | i = littlelen - len; |
| 2532 | if (i > 0) { /* string might grow */ |
| 2533 | big = SvGROW(bigstr, SvCUR(bigstr) + i + 1); |
| 2534 | mid = big + offset + len; |
| 2535 | midend = bigend = big + SvCUR(bigstr); |
| 2536 | bigend += i; |
| 2537 | *bigend = '\0'; |
| 2538 | while (midend > mid) /* shove everything down */ |
| 2539 | *--bigend = *--midend; |
| 2540 | Move(little,big+offset,littlelen,char); |
| 2541 | SvCUR(bigstr) += i; |
| 2542 | SvSETMAGIC(bigstr); |
| 2543 | return; |
| 2544 | } |
| 2545 | else if (i == 0) { |
| 2546 | Move(little,SvPVX(bigstr)+offset,len,char); |
| 2547 | SvSETMAGIC(bigstr); |
| 2548 | return; |
| 2549 | } |
| 2550 | |
| 2551 | big = SvPVX(bigstr); |
| 2552 | mid = big + offset; |
| 2553 | midend = mid + len; |
| 2554 | bigend = big + SvCUR(bigstr); |
| 2555 | |
| 2556 | if (midend > bigend) |
| 2557 | croak("panic: sv_insert"); |
| 2558 | |
| 2559 | if (mid - big > bigend - midend) { /* faster to shorten from end */ |
| 2560 | if (littlelen) { |
| 2561 | Move(little, mid, littlelen,char); |
| 2562 | mid += littlelen; |
| 2563 | } |
| 2564 | i = bigend - midend; |
| 2565 | if (i > 0) { |
| 2566 | Move(midend, mid, i,char); |
| 2567 | mid += i; |
| 2568 | } |
| 2569 | *mid = '\0'; |
| 2570 | SvCUR_set(bigstr, mid - big); |
| 2571 | } |
| 2572 | /*SUPPRESS 560*/ |
| 2573 | else if (i = mid - big) { /* faster from front */ |
| 2574 | midend -= littlelen; |
| 2575 | mid = midend; |
| 2576 | sv_chop(bigstr,midend-i); |
| 2577 | big += i; |
| 2578 | while (i--) |
| 2579 | *--midend = *--big; |
| 2580 | if (littlelen) |
| 2581 | Move(little, mid, littlelen,char); |
| 2582 | } |
| 2583 | else if (littlelen) { |
| 2584 | midend -= littlelen; |
| 2585 | sv_chop(bigstr,midend); |
| 2586 | Move(little,midend,littlelen,char); |
| 2587 | } |
| 2588 | else { |
| 2589 | sv_chop(bigstr,midend); |
| 2590 | } |
| 2591 | SvSETMAGIC(bigstr); |
| 2592 | } |
| 2593 | |
| 2594 | /* make sv point to what nstr did */ |
| 2595 | |
| 2596 | void |
| 2597 | sv_replace(register SV *sv, register SV *nsv) |
| 2598 | { |
| 2599 | U32 refcnt = SvREFCNT(sv); |
| 2600 | sv_check_thinkfirst(sv); |
| 2601 | if (SvREFCNT(nsv) != 1) |
| 2602 | warn("Reference miscount in sv_replace()"); |
| 2603 | if (SvMAGICAL(sv)) { |
| 2604 | if (SvMAGICAL(nsv)) |
| 2605 | mg_free(nsv); |
| 2606 | else |
| 2607 | sv_upgrade(nsv, SVt_PVMG); |
| 2608 | SvMAGIC(nsv) = SvMAGIC(sv); |
| 2609 | SvFLAGS(nsv) |= SvMAGICAL(sv); |
| 2610 | SvMAGICAL_off(sv); |
| 2611 | SvMAGIC(sv) = 0; |
| 2612 | } |
| 2613 | SvREFCNT(sv) = 0; |
| 2614 | sv_clear(sv); |
| 2615 | assert(!SvREFCNT(sv)); |
| 2616 | StructCopy(nsv,sv,SV); |
| 2617 | SvREFCNT(sv) = refcnt; |
| 2618 | SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */ |
| 2619 | del_SV(nsv); |
| 2620 | } |
| 2621 | |
| 2622 | void |
| 2623 | sv_clear(register SV *sv) |
| 2624 | { |
| 2625 | assert(sv); |
| 2626 | assert(SvREFCNT(sv) == 0); |
| 2627 | |
| 2628 | if (SvOBJECT(sv)) { |
| 2629 | dTHR; |
| 2630 | if (defstash) { /* Still have a symbol table? */ |
| 2631 | djSP; |
| 2632 | GV* destructor; |
| 2633 | |
| 2634 | ENTER; |
| 2635 | SAVEFREESV(SvSTASH(sv)); |
| 2636 | |
| 2637 | destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY"); |
| 2638 | if (destructor) { |
| 2639 | SV ref; |
| 2640 | |
| 2641 | Zero(&ref, 1, SV); |
| 2642 | sv_upgrade(&ref, SVt_RV); |
| 2643 | SvRV(&ref) = SvREFCNT_inc(sv); |
| 2644 | SvROK_on(&ref); |
| 2645 | SvREFCNT(&ref) = 1; /* Fake, but otherwise |
| 2646 | creating+destructing a ref |
| 2647 | leads to disaster. */ |
| 2648 | |
| 2649 | EXTEND(SP, 2); |
| 2650 | PUSHMARK(SP); |
| 2651 | PUSHs(&ref); |
| 2652 | PUTBACK; |
| 2653 | perl_call_sv((SV*)GvCV(destructor), |
| 2654 | G_DISCARD|G_EVAL|G_KEEPERR); |
| 2655 | del_XRV(SvANY(&ref)); |
| 2656 | SvREFCNT(sv)--; |
| 2657 | } |
| 2658 | |
| 2659 | LEAVE; |
| 2660 | } |
| 2661 | else |
| 2662 | SvREFCNT_dec(SvSTASH(sv)); |
| 2663 | if (SvOBJECT(sv)) { |
| 2664 | SvOBJECT_off(sv); /* Curse the object. */ |
| 2665 | if (SvTYPE(sv) != SVt_PVIO) |
| 2666 | --sv_objcount; /* XXX Might want something more general */ |
| 2667 | } |
| 2668 | if (SvREFCNT(sv)) { |
| 2669 | if (in_clean_objs) |
| 2670 | croak("DESTROY created new reference to dead object"); |
| 2671 | /* DESTROY gave object new lease on life */ |
| 2672 | return; |
| 2673 | } |
| 2674 | } |
| 2675 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) |
| 2676 | mg_free(sv); |
| 2677 | switch (SvTYPE(sv)) { |
| 2678 | case SVt_PVIO: |
| 2679 | if (IoIFP(sv) != PerlIO_stdin() && |
| 2680 | IoIFP(sv) != PerlIO_stdout() && |
| 2681 | IoIFP(sv) != PerlIO_stderr()) |
| 2682 | io_close((IO*)sv); |
| 2683 | Safefree(IoTOP_NAME(sv)); |
| 2684 | Safefree(IoFMT_NAME(sv)); |
| 2685 | Safefree(IoBOTTOM_NAME(sv)); |
| 2686 | /* FALL THROUGH */ |
| 2687 | case SVt_PVBM: |
| 2688 | goto freescalar; |
| 2689 | case SVt_PVCV: |
| 2690 | case SVt_PVFM: |
| 2691 | cv_undef((CV*)sv); |
| 2692 | goto freescalar; |
| 2693 | case SVt_PVHV: |
| 2694 | hv_undef((HV*)sv); |
| 2695 | break; |
| 2696 | case SVt_PVAV: |
| 2697 | av_undef((AV*)sv); |
| 2698 | break; |
| 2699 | case SVt_PVGV: |
| 2700 | gp_free((GV*)sv); |
| 2701 | Safefree(GvNAME(sv)); |
| 2702 | SvREFCNT_dec(GvSTASH(sv)); |
| 2703 | /* FALL THROUGH */ |
| 2704 | case SVt_PVLV: |
| 2705 | case SVt_PVMG: |
| 2706 | case SVt_PVNV: |
| 2707 | case SVt_PVIV: |
| 2708 | freescalar: |
| 2709 | (void)SvOOK_off(sv); |
| 2710 | /* FALL THROUGH */ |
| 2711 | case SVt_PV: |
| 2712 | case SVt_RV: |
| 2713 | if (SvROK(sv)) |
| 2714 | SvREFCNT_dec(SvRV(sv)); |
| 2715 | else if (SvPVX(sv) && SvLEN(sv)) |
| 2716 | Safefree(SvPVX(sv)); |
| 2717 | break; |
| 2718 | /* |
| 2719 | case SVt_NV: |
| 2720 | case SVt_IV: |
| 2721 | case SVt_NULL: |
| 2722 | break; |
| 2723 | */ |
| 2724 | } |
| 2725 | |
| 2726 | switch (SvTYPE(sv)) { |
| 2727 | case SVt_NULL: |
| 2728 | break; |
| 2729 | case SVt_IV: |
| 2730 | del_XIV(SvANY(sv)); |
| 2731 | break; |
| 2732 | case SVt_NV: |
| 2733 | del_XNV(SvANY(sv)); |
| 2734 | break; |
| 2735 | case SVt_RV: |
| 2736 | del_XRV(SvANY(sv)); |
| 2737 | break; |
| 2738 | case SVt_PV: |
| 2739 | del_XPV(SvANY(sv)); |
| 2740 | break; |
| 2741 | case SVt_PVIV: |
| 2742 | del_XPVIV(SvANY(sv)); |
| 2743 | break; |
| 2744 | case SVt_PVNV: |
| 2745 | del_XPVNV(SvANY(sv)); |
| 2746 | break; |
| 2747 | case SVt_PVMG: |
| 2748 | del_XPVMG(SvANY(sv)); |
| 2749 | break; |
| 2750 | case SVt_PVLV: |
| 2751 | del_XPVLV(SvANY(sv)); |
| 2752 | break; |
| 2753 | case SVt_PVAV: |
| 2754 | del_XPVAV(SvANY(sv)); |
| 2755 | break; |
| 2756 | case SVt_PVHV: |
| 2757 | del_XPVHV(SvANY(sv)); |
| 2758 | break; |
| 2759 | case SVt_PVCV: |
| 2760 | del_XPVCV(SvANY(sv)); |
| 2761 | break; |
| 2762 | case SVt_PVGV: |
| 2763 | del_XPVGV(SvANY(sv)); |
| 2764 | break; |
| 2765 | case SVt_PVBM: |
| 2766 | del_XPVBM(SvANY(sv)); |
| 2767 | break; |
| 2768 | case SVt_PVFM: |
| 2769 | del_XPVFM(SvANY(sv)); |
| 2770 | break; |
| 2771 | case SVt_PVIO: |
| 2772 | del_XPVIO(SvANY(sv)); |
| 2773 | break; |
| 2774 | } |
| 2775 | SvFLAGS(sv) &= SVf_BREAK; |
| 2776 | SvFLAGS(sv) |= SVTYPEMASK; |
| 2777 | } |
| 2778 | |
| 2779 | SV * |
| 2780 | sv_newref(SV *sv) |
| 2781 | { |
| 2782 | if (sv) |
| 2783 | SvREFCNT(sv)++; |
| 2784 | return sv; |
| 2785 | } |
| 2786 | |
| 2787 | void |
| 2788 | sv_free(SV *sv) |
| 2789 | { |
| 2790 | if (!sv) |
| 2791 | return; |
| 2792 | if (SvREADONLY(sv)) { |
| 2793 | if (sv == &sv_undef || sv == &sv_yes || sv == &sv_no) |
| 2794 | return; |
| 2795 | } |
| 2796 | if (SvREFCNT(sv) == 0) { |
| 2797 | if (SvFLAGS(sv) & SVf_BREAK) |
| 2798 | return; |
| 2799 | if (in_clean_all) /* All is fair */ |
| 2800 | return; |
| 2801 | warn("Attempt to free unreferenced scalar"); |
| 2802 | return; |
| 2803 | } |
| 2804 | if (--SvREFCNT(sv) > 0) |
| 2805 | return; |
| 2806 | #ifdef DEBUGGING |
| 2807 | if (SvTEMP(sv)) { |
| 2808 | warn("Attempt to free temp prematurely: %s", SvPEEK(sv)); |
| 2809 | return; |
| 2810 | } |
| 2811 | #endif |
| 2812 | sv_clear(sv); |
| 2813 | if (! SvREFCNT(sv)) |
| 2814 | del_SV(sv); |
| 2815 | } |
| 2816 | |
| 2817 | STRLEN |
| 2818 | sv_len(register SV *sv) |
| 2819 | { |
| 2820 | char *junk; |
| 2821 | STRLEN len; |
| 2822 | |
| 2823 | if (!sv) |
| 2824 | return 0; |
| 2825 | |
| 2826 | if (SvGMAGICAL(sv)) |
| 2827 | len = mg_len(sv); |
| 2828 | else |
| 2829 | junk = SvPV(sv, len); |
| 2830 | return len; |
| 2831 | } |
| 2832 | |
| 2833 | I32 |
| 2834 | sv_eq(register SV *str1, register SV *str2) |
| 2835 | { |
| 2836 | char *pv1; |
| 2837 | STRLEN cur1; |
| 2838 | char *pv2; |
| 2839 | STRLEN cur2; |
| 2840 | |
| 2841 | if (!str1) { |
| 2842 | pv1 = ""; |
| 2843 | cur1 = 0; |
| 2844 | } |
| 2845 | else |
| 2846 | pv1 = SvPV(str1, cur1); |
| 2847 | |
| 2848 | if (!str2) |
| 2849 | return !cur1; |
| 2850 | else |
| 2851 | pv2 = SvPV(str2, cur2); |
| 2852 | |
| 2853 | if (cur1 != cur2) |
| 2854 | return 0; |
| 2855 | |
| 2856 | return memEQ(pv1, pv2, cur1); |
| 2857 | } |
| 2858 | |
| 2859 | I32 |
| 2860 | sv_cmp(register SV *str1, register SV *str2) |
| 2861 | { |
| 2862 | STRLEN cur1 = 0; |
| 2863 | char *pv1 = str1 ? SvPV(str1, cur1) : (char *) NULL; |
| 2864 | STRLEN cur2 = 0; |
| 2865 | char *pv2 = str2 ? SvPV(str2, cur2) : (char *) NULL; |
| 2866 | I32 retval; |
| 2867 | |
| 2868 | if (!cur1) |
| 2869 | return cur2 ? -1 : 0; |
| 2870 | |
| 2871 | if (!cur2) |
| 2872 | return 1; |
| 2873 | |
| 2874 | retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2); |
| 2875 | |
| 2876 | if (retval) |
| 2877 | return retval < 0 ? -1 : 1; |
| 2878 | |
| 2879 | if (cur1 == cur2) |
| 2880 | return 0; |
| 2881 | else |
| 2882 | return cur1 < cur2 ? -1 : 1; |
| 2883 | } |
| 2884 | |
| 2885 | I32 |
| 2886 | sv_cmp_locale(register SV *sv1, register SV *sv2) |
| 2887 | { |
| 2888 | #ifdef USE_LOCALE_COLLATE |
| 2889 | |
| 2890 | char *pv1, *pv2; |
| 2891 | STRLEN len1, len2; |
| 2892 | I32 retval; |
| 2893 | |
| 2894 | if (collation_standard) |
| 2895 | goto raw_compare; |
| 2896 | |
| 2897 | len1 = 0; |
| 2898 | pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL; |
| 2899 | len2 = 0; |
| 2900 | pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL; |
| 2901 | |
| 2902 | if (!pv1 || !len1) { |
| 2903 | if (pv2 && len2) |
| 2904 | return -1; |
| 2905 | else |
| 2906 | goto raw_compare; |
| 2907 | } |
| 2908 | else { |
| 2909 | if (!pv2 || !len2) |
| 2910 | return 1; |
| 2911 | } |
| 2912 | |
| 2913 | retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2); |
| 2914 | |
| 2915 | if (retval) |
| 2916 | return retval < 0 ? -1 : 1; |
| 2917 | |
| 2918 | /* |
| 2919 | * When the result of collation is equality, that doesn't mean |
| 2920 | * that there are no differences -- some locales exclude some |
| 2921 | * characters from consideration. So to avoid false equalities, |
| 2922 | * we use the raw string as a tiebreaker. |
| 2923 | */ |
| 2924 | |
| 2925 | raw_compare: |
| 2926 | /* FALL THROUGH */ |
| 2927 | |
| 2928 | #endif /* USE_LOCALE_COLLATE */ |
| 2929 | |
| 2930 | return sv_cmp(sv1, sv2); |
| 2931 | } |
| 2932 | |
| 2933 | #ifdef USE_LOCALE_COLLATE |
| 2934 | /* |
| 2935 | * Any scalar variable may carry an 'o' magic that contains the |
| 2936 | * scalar data of the variable transformed to such a format that |
| 2937 | * a normal memory comparison can be used to compare the data |
| 2938 | * according to the locale settings. |
| 2939 | */ |
| 2940 | char * |
| 2941 | sv_collxfrm(SV *sv, STRLEN *nxp) |
| 2942 | { |
| 2943 | MAGIC *mg; |
| 2944 | |
| 2945 | mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL; |
| 2946 | if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != collation_ix) { |
| 2947 | char *s, *xf; |
| 2948 | STRLEN len, xlen; |
| 2949 | |
| 2950 | if (mg) |
| 2951 | Safefree(mg->mg_ptr); |
| 2952 | s = SvPV(sv, len); |
| 2953 | if ((xf = mem_collxfrm(s, len, &xlen))) { |
| 2954 | if (SvREADONLY(sv)) { |
| 2955 | SAVEFREEPV(xf); |
| 2956 | *nxp = xlen; |
| 2957 | return xf + sizeof(collation_ix); |
| 2958 | } |
| 2959 | if (! mg) { |
| 2960 | sv_magic(sv, 0, 'o', 0, 0); |
| 2961 | mg = mg_find(sv, 'o'); |
| 2962 | assert(mg); |
| 2963 | } |
| 2964 | mg->mg_ptr = xf; |
| 2965 | mg->mg_len = xlen; |
| 2966 | } |
| 2967 | else { |
| 2968 | if (mg) { |
| 2969 | mg->mg_ptr = NULL; |
| 2970 | mg->mg_len = -1; |
| 2971 | } |
| 2972 | } |
| 2973 | } |
| 2974 | if (mg && mg->mg_ptr) { |
| 2975 | *nxp = mg->mg_len; |
| 2976 | return mg->mg_ptr + sizeof(collation_ix); |
| 2977 | } |
| 2978 | else { |
| 2979 | *nxp = 0; |
| 2980 | return NULL; |
| 2981 | } |
| 2982 | } |
| 2983 | |
| 2984 | #endif /* USE_LOCALE_COLLATE */ |
| 2985 | |
| 2986 | char * |
| 2987 | sv_gets(register SV *sv, register PerlIO *fp, I32 append) |
| 2988 | { |
| 2989 | dTHR; |
| 2990 | char *rsptr; |
| 2991 | STRLEN rslen; |
| 2992 | register STDCHAR rslast; |
| 2993 | register STDCHAR *bp; |
| 2994 | register I32 cnt; |
| 2995 | I32 i; |
| 2996 | |
| 2997 | sv_check_thinkfirst(sv); |
| 2998 | if (!SvUPGRADE(sv, SVt_PV)) |
| 2999 | return 0; |
| 3000 | SvSCREAM_off(sv); |
| 3001 | |
| 3002 | if (RsSNARF(rs)) { |
| 3003 | rsptr = NULL; |
| 3004 | rslen = 0; |
| 3005 | } |
| 3006 | else if (RsPARA(rs)) { |
| 3007 | rsptr = "\n\n"; |
| 3008 | rslen = 2; |
| 3009 | } |
| 3010 | else |
| 3011 | rsptr = SvPV(rs, rslen); |
| 3012 | rslast = rslen ? rsptr[rslen - 1] : '\0'; |
| 3013 | |
| 3014 | if (RsPARA(rs)) { /* have to do this both before and after */ |
| 3015 | do { /* to make sure file boundaries work right */ |
| 3016 | if (PerlIO_eof(fp)) |
| 3017 | return 0; |
| 3018 | i = PerlIO_getc(fp); |
| 3019 | if (i != '\n') { |
| 3020 | if (i == -1) |
| 3021 | return 0; |
| 3022 | PerlIO_ungetc(fp,i); |
| 3023 | break; |
| 3024 | } |
| 3025 | } while (i != EOF); |
| 3026 | } |
| 3027 | |
| 3028 | /* See if we know enough about I/O mechanism to cheat it ! */ |
| 3029 | |
| 3030 | /* This used to be #ifdef test - it is made run-time test for ease |
| 3031 | of abstracting out stdio interface. One call should be cheap |
| 3032 | enough here - and may even be a macro allowing compile |
| 3033 | time optimization. |
| 3034 | */ |
| 3035 | |
| 3036 | if (PerlIO_fast_gets(fp)) { |
| 3037 | |
| 3038 | /* |
| 3039 | * We're going to steal some values from the stdio struct |
| 3040 | * and put EVERYTHING in the innermost loop into registers. |
| 3041 | */ |
| 3042 | register STDCHAR *ptr; |
| 3043 | STRLEN bpx; |
| 3044 | I32 shortbuffered; |
| 3045 | |
| 3046 | #if defined(VMS) && defined(PERLIO_IS_STDIO) |
| 3047 | /* An ungetc()d char is handled separately from the regular |
| 3048 | * buffer, so we getc() it back out and stuff it in the buffer. |
| 3049 | */ |
| 3050 | i = PerlIO_getc(fp); |
| 3051 | if (i == EOF) return 0; |
| 3052 | *(--((*fp)->_ptr)) = (unsigned char) i; |
| 3053 | (*fp)->_cnt++; |
| 3054 | #endif |
| 3055 | |
| 3056 | /* Here is some breathtakingly efficient cheating */ |
| 3057 | |
| 3058 | cnt = PerlIO_get_cnt(fp); /* get count into register */ |
| 3059 | (void)SvPOK_only(sv); /* validate pointer */ |
| 3060 | if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */ |
| 3061 | if (cnt > 80 && SvLEN(sv) > append) { |
| 3062 | shortbuffered = cnt - SvLEN(sv) + append + 1; |
| 3063 | cnt -= shortbuffered; |
| 3064 | } |
| 3065 | else { |
| 3066 | shortbuffered = 0; |
| 3067 | /* remember that cnt can be negative */ |
| 3068 | SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1))); |
| 3069 | } |
| 3070 | } |
| 3071 | else |
| 3072 | shortbuffered = 0; |
| 3073 | bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */ |
| 3074 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); |
| 3075 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
| 3076 | "Screamer: entering, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt)); |
| 3077 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
| 3078 | "Screamer: entering: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n", |
| 3079 | (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp), |
| 3080 | (long)(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0))); |
| 3081 | for (;;) { |
| 3082 | screamer: |
| 3083 | if (cnt > 0) { |
| 3084 | if (rslen) { |
| 3085 | while (cnt > 0) { /* this | eat */ |
| 3086 | cnt--; |
| 3087 | if ((*bp++ = *ptr++) == rslast) /* really | dust */ |
| 3088 | goto thats_all_folks; /* screams | sed :-) */ |
| 3089 | } |
| 3090 | } |
| 3091 | else { |
| 3092 | Copy(ptr, bp, cnt, char); /* this | eat */ |
| 3093 | bp += cnt; /* screams | dust */ |
| 3094 | ptr += cnt; /* louder | sed :-) */ |
| 3095 | cnt = 0; |
| 3096 | } |
| 3097 | } |
| 3098 | |
| 3099 | if (shortbuffered) { /* oh well, must extend */ |
| 3100 | cnt = shortbuffered; |
| 3101 | shortbuffered = 0; |
| 3102 | bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */ |
| 3103 | SvCUR_set(sv, bpx); |
| 3104 | SvGROW(sv, SvLEN(sv) + append + cnt + 2); |
| 3105 | bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */ |
| 3106 | continue; |
| 3107 | } |
| 3108 | |
| 3109 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
| 3110 | "Screamer: going to getc, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt)); |
| 3111 | PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */ |
| 3112 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
| 3113 | "Screamer: pre: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n", |
| 3114 | (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp), |
| 3115 | (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
| 3116 | /* This used to call 'filbuf' in stdio form, but as that behaves like |
| 3117 | getc when cnt <= 0 we use PerlIO_getc here to avoid introducing |
| 3118 | another abstraction. */ |
| 3119 | i = PerlIO_getc(fp); /* get more characters */ |
| 3120 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
| 3121 | "Screamer: post: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n", |
| 3122 | (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp), |
| 3123 | (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
| 3124 | cnt = PerlIO_get_cnt(fp); |
| 3125 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */ |
| 3126 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
| 3127 | "Screamer: after getc, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt)); |
| 3128 | |
| 3129 | if (i == EOF) /* all done for ever? */ |
| 3130 | goto thats_really_all_folks; |
| 3131 | |
| 3132 | bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */ |
| 3133 | SvCUR_set(sv, bpx); |
| 3134 | SvGROW(sv, bpx + cnt + 2); |
| 3135 | bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */ |
| 3136 | |
| 3137 | *bp++ = i; /* store character from PerlIO_getc */ |
| 3138 | |
| 3139 | if (rslen && (STDCHAR)i == rslast) /* all done for now? */ |
| 3140 | goto thats_all_folks; |
| 3141 | } |
| 3142 | |
| 3143 | thats_all_folks: |
| 3144 | if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) || |
| 3145 | memNE((char*)bp - rslen, rsptr, rslen)) |
| 3146 | goto screamer; /* go back to the fray */ |
| 3147 | thats_really_all_folks: |
| 3148 | if (shortbuffered) |
| 3149 | cnt += shortbuffered; |
| 3150 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
| 3151 | "Screamer: quitting, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt)); |
| 3152 | PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */ |
| 3153 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
| 3154 | "Screamer: end: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n", |
| 3155 | (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp), |
| 3156 | (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
| 3157 | *bp = '\0'; |
| 3158 | SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */ |
| 3159 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
| 3160 | "Screamer: done, len=%ld, string=|%.*s|\n", |
| 3161 | (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv))); |
| 3162 | } |
| 3163 | else |
| 3164 | { |
| 3165 | /*The big, slow, and stupid way */ |
| 3166 | STDCHAR buf[8192]; |
| 3167 | |
| 3168 | screamer2: |
| 3169 | if (rslen) { |
| 3170 | register STDCHAR *bpe = buf + sizeof(buf); |
| 3171 | bp = buf; |
| 3172 | while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe) |
| 3173 | ; /* keep reading */ |
| 3174 | cnt = bp - buf; |
| 3175 | } |
| 3176 | else { |
| 3177 | cnt = PerlIO_read(fp,(char*)buf, sizeof(buf)); |
| 3178 | /* Accomodate broken VAXC compiler, which applies U8 cast to |
| 3179 | * both args of ?: operator, causing EOF to change into 255 |
| 3180 | */ |
| 3181 | if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; } |
| 3182 | } |
| 3183 | |
| 3184 | if (append) |
| 3185 | sv_catpvn(sv, (char *) buf, cnt); |
| 3186 | else |
| 3187 | sv_setpvn(sv, (char *) buf, cnt); |
| 3188 | |
| 3189 | if (i != EOF && /* joy */ |
| 3190 | (!rslen || |
| 3191 | SvCUR(sv) < rslen || |
| 3192 | memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen))) |
| 3193 | { |
| 3194 | append = -1; |
| 3195 | /* |
| 3196 | * If we're reading from a TTY and we get a short read, |
| 3197 | * indicating that the user hit his EOF character, we need |
| 3198 | * to notice it now, because if we try to read from the TTY |
| 3199 | * again, the EOF condition will disappear. |
| 3200 | * |
| 3201 | * The comparison of cnt to sizeof(buf) is an optimization |
| 3202 | * that prevents unnecessary calls to feof(). |
| 3203 | * |
| 3204 | * - jik 9/25/96 |
| 3205 | */ |
| 3206 | if (!(cnt < sizeof(buf) && PerlIO_eof(fp))) |
| 3207 | goto screamer2; |
| 3208 | } |
| 3209 | } |
| 3210 | |
| 3211 | if (RsPARA(rs)) { /* have to do this both before and after */ |
| 3212 | while (i != EOF) { /* to make sure file boundaries work right */ |
| 3213 | i = PerlIO_getc(fp); |
| 3214 | if (i != '\n') { |
| 3215 | PerlIO_ungetc(fp,i); |
| 3216 | break; |
| 3217 | } |
| 3218 | } |
| 3219 | } |
| 3220 | |
| 3221 | #ifdef WIN32 |
| 3222 | win32_strip_return(sv); |
| 3223 | #endif |
| 3224 | |
| 3225 | return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch; |
| 3226 | } |
| 3227 | |
| 3228 | |
| 3229 | void |
| 3230 | sv_inc(register SV *sv) |
| 3231 | { |
| 3232 | register char *d; |
| 3233 | int flags; |
| 3234 | |
| 3235 | if (!sv) |
| 3236 | return; |
| 3237 | if (SvTHINKFIRST(sv)) { |
| 3238 | if (SvREADONLY(sv)) { |
| 3239 | dTHR; |
| 3240 | if (curcop != &compiling) |
| 3241 | croak(no_modify); |
| 3242 | } |
| 3243 | if (SvROK(sv)) { |
| 3244 | #ifdef OVERLOAD |
| 3245 | if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) return; |
| 3246 | #endif /* OVERLOAD */ |
| 3247 | sv_unref(sv); |
| 3248 | } |
| 3249 | } |
| 3250 | if (SvGMAGICAL(sv)) |
| 3251 | mg_get(sv); |
| 3252 | flags = SvFLAGS(sv); |
| 3253 | if (flags & SVp_NOK) { |
| 3254 | (void)SvNOK_only(sv); |
| 3255 | SvNVX(sv) += 1.0; |
| 3256 | return; |
| 3257 | } |
| 3258 | if (flags & SVp_IOK) { |
| 3259 | if (SvIVX(sv) == IV_MAX) |
| 3260 | sv_setnv(sv, (double)IV_MAX + 1.0); |
| 3261 | else { |
| 3262 | (void)SvIOK_only(sv); |
| 3263 | ++SvIVX(sv); |
| 3264 | } |
| 3265 | return; |
| 3266 | } |
| 3267 | if (!(flags & SVp_POK) || !*SvPVX(sv)) { |
| 3268 | if ((flags & SVTYPEMASK) < SVt_PVNV) |
| 3269 | sv_upgrade(sv, SVt_NV); |
| 3270 | SvNVX(sv) = 1.0; |
| 3271 | (void)SvNOK_only(sv); |
| 3272 | return; |
| 3273 | } |
| 3274 | d = SvPVX(sv); |
| 3275 | while (isALPHA(*d)) d++; |
| 3276 | while (isDIGIT(*d)) d++; |
| 3277 | if (*d) { |
| 3278 | SET_NUMERIC_STANDARD(); |
| 3279 | sv_setnv(sv,atof(SvPVX(sv)) + 1.0); /* punt */ |
| 3280 | return; |
| 3281 | } |
| 3282 | d--; |
| 3283 | while (d >= SvPVX(sv)) { |
| 3284 | if (isDIGIT(*d)) { |
| 3285 | if (++*d <= '9') |
| 3286 | return; |
| 3287 | *(d--) = '0'; |
| 3288 | } |
| 3289 | else { |
| 3290 | ++*d; |
| 3291 | if (isALPHA(*d)) |
| 3292 | return; |
| 3293 | *(d--) -= 'z' - 'a' + 1; |
| 3294 | } |
| 3295 | } |
| 3296 | /* oh,oh, the number grew */ |
| 3297 | SvGROW(sv, SvCUR(sv) + 2); |
| 3298 | SvCUR(sv)++; |
| 3299 | for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--) |
| 3300 | *d = d[-1]; |
| 3301 | if (isDIGIT(d[1])) |
| 3302 | *d = '1'; |
| 3303 | else |
| 3304 | *d = d[1]; |
| 3305 | } |
| 3306 | |
| 3307 | void |
| 3308 | sv_dec(register SV *sv) |
| 3309 | { |
| 3310 | int flags; |
| 3311 | |
| 3312 | if (!sv) |
| 3313 | return; |
| 3314 | if (SvTHINKFIRST(sv)) { |
| 3315 | if (SvREADONLY(sv)) { |
| 3316 | dTHR; |
| 3317 | if (curcop != &compiling) |
| 3318 | croak(no_modify); |
| 3319 | } |
| 3320 | if (SvROK(sv)) { |
| 3321 | #ifdef OVERLOAD |
| 3322 | if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) return; |
| 3323 | #endif /* OVERLOAD */ |
| 3324 | sv_unref(sv); |
| 3325 | } |
| 3326 | } |
| 3327 | if (SvGMAGICAL(sv)) |
| 3328 | mg_get(sv); |
| 3329 | flags = SvFLAGS(sv); |
| 3330 | if (flags & SVp_NOK) { |
| 3331 | SvNVX(sv) -= 1.0; |
| 3332 | (void)SvNOK_only(sv); |
| 3333 | return; |
| 3334 | } |
| 3335 | if (flags & SVp_IOK) { |
| 3336 | if (SvIVX(sv) == IV_MIN) |
| 3337 | sv_setnv(sv, (double)IV_MIN - 1.0); |
| 3338 | else { |
| 3339 | (void)SvIOK_only(sv); |
| 3340 | --SvIVX(sv); |
| 3341 | } |
| 3342 | return; |
| 3343 | } |
| 3344 | if (!(flags & SVp_POK)) { |
| 3345 | if ((flags & SVTYPEMASK) < SVt_PVNV) |
| 3346 | sv_upgrade(sv, SVt_NV); |
| 3347 | SvNVX(sv) = -1.0; |
| 3348 | (void)SvNOK_only(sv); |
| 3349 | return; |
| 3350 | } |
| 3351 | SET_NUMERIC_STANDARD(); |
| 3352 | sv_setnv(sv,atof(SvPVX(sv)) - 1.0); /* punt */ |
| 3353 | } |
| 3354 | |
| 3355 | /* Make a string that will exist for the duration of the expression |
| 3356 | * evaluation. Actually, it may have to last longer than that, but |
| 3357 | * hopefully we won't free it until it has been assigned to a |
| 3358 | * permanent location. */ |
| 3359 | |
| 3360 | static void |
| 3361 | sv_mortalgrow(void) |
| 3362 | { |
| 3363 | dTHR; |
| 3364 | tmps_max += (tmps_max < 512) ? 128 : 512; |
| 3365 | Renew(tmps_stack, tmps_max, SV*); |
| 3366 | } |
| 3367 | |
| 3368 | SV * |
| 3369 | sv_mortalcopy(SV *oldstr) |
| 3370 | { |
| 3371 | dTHR; |
| 3372 | register SV *sv; |
| 3373 | |
| 3374 | new_SV(sv); |
| 3375 | SvANY(sv) = 0; |
| 3376 | SvREFCNT(sv) = 1; |
| 3377 | SvFLAGS(sv) = 0; |
| 3378 | sv_setsv(sv,oldstr); |
| 3379 | if (++tmps_ix >= tmps_max) |
| 3380 | sv_mortalgrow(); |
| 3381 | tmps_stack[tmps_ix] = sv; |
| 3382 | SvTEMP_on(sv); |
| 3383 | return sv; |
| 3384 | } |
| 3385 | |
| 3386 | SV * |
| 3387 | sv_newmortal(void) |
| 3388 | { |
| 3389 | dTHR; |
| 3390 | register SV *sv; |
| 3391 | |
| 3392 | new_SV(sv); |
| 3393 | SvANY(sv) = 0; |
| 3394 | SvREFCNT(sv) = 1; |
| 3395 | SvFLAGS(sv) = SVs_TEMP; |
| 3396 | if (++tmps_ix >= tmps_max) |
| 3397 | sv_mortalgrow(); |
| 3398 | tmps_stack[tmps_ix] = sv; |
| 3399 | return sv; |
| 3400 | } |
| 3401 | |
| 3402 | /* same thing without the copying */ |
| 3403 | |
| 3404 | SV * |
| 3405 | sv_2mortal(register SV *sv) |
| 3406 | { |
| 3407 | dTHR; |
| 3408 | if (!sv) |
| 3409 | return sv; |
| 3410 | if (SvREADONLY(sv) && curcop != &compiling) |
| 3411 | croak(no_modify); |
| 3412 | if (++tmps_ix >= tmps_max) |
| 3413 | sv_mortalgrow(); |
| 3414 | tmps_stack[tmps_ix] = sv; |
| 3415 | SvTEMP_on(sv); |
| 3416 | return sv; |
| 3417 | } |
| 3418 | |
| 3419 | SV * |
| 3420 | newSVpv(char *s, STRLEN len) |
| 3421 | { |
| 3422 | register SV *sv; |
| 3423 | |
| 3424 | new_SV(sv); |
| 3425 | SvANY(sv) = 0; |
| 3426 | SvREFCNT(sv) = 1; |
| 3427 | SvFLAGS(sv) = 0; |
| 3428 | if (!len) |
| 3429 | len = strlen(s); |
| 3430 | sv_setpvn(sv,s,len); |
| 3431 | return sv; |
| 3432 | } |
| 3433 | |
| 3434 | #ifdef I_STDARG |
| 3435 | SV * |
| 3436 | newSVpvf(const char* pat, ...) |
| 3437 | #else |
| 3438 | /*VARARGS0*/ |
| 3439 | SV * |
| 3440 | newSVpvf(pat, va_alist) |
| 3441 | const char *pat; |
| 3442 | va_dcl |
| 3443 | #endif |
| 3444 | { |
| 3445 | register SV *sv; |
| 3446 | va_list args; |
| 3447 | |
| 3448 | new_SV(sv); |
| 3449 | SvANY(sv) = 0; |
| 3450 | SvREFCNT(sv) = 1; |
| 3451 | SvFLAGS(sv) = 0; |
| 3452 | #ifdef I_STDARG |
| 3453 | va_start(args, pat); |
| 3454 | #else |
| 3455 | va_start(args); |
| 3456 | #endif |
| 3457 | sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*)); |
| 3458 | va_end(args); |
| 3459 | return sv; |
| 3460 | } |
| 3461 | |
| 3462 | |
| 3463 | SV * |
| 3464 | newSVnv(double n) |
| 3465 | { |
| 3466 | register SV *sv; |
| 3467 | |
| 3468 | new_SV(sv); |
| 3469 | SvANY(sv) = 0; |
| 3470 | SvREFCNT(sv) = 1; |
| 3471 | SvFLAGS(sv) = 0; |
| 3472 | sv_setnv(sv,n); |
| 3473 | return sv; |
| 3474 | } |
| 3475 | |
| 3476 | SV * |
| 3477 | newSViv(IV i) |
| 3478 | { |
| 3479 | register SV *sv; |
| 3480 | |
| 3481 | new_SV(sv); |
| 3482 | SvANY(sv) = 0; |
| 3483 | SvREFCNT(sv) = 1; |
| 3484 | SvFLAGS(sv) = 0; |
| 3485 | sv_setiv(sv,i); |
| 3486 | return sv; |
| 3487 | } |
| 3488 | |
| 3489 | SV * |
| 3490 | newRV(SV *ref) |
| 3491 | { |
| 3492 | dTHR; |
| 3493 | register SV *sv; |
| 3494 | |
| 3495 | new_SV(sv); |
| 3496 | SvANY(sv) = 0; |
| 3497 | SvREFCNT(sv) = 1; |
| 3498 | SvFLAGS(sv) = 0; |
| 3499 | sv_upgrade(sv, SVt_RV); |
| 3500 | SvTEMP_off(ref); |
| 3501 | SvRV(sv) = SvREFCNT_inc(ref); |
| 3502 | SvROK_on(sv); |
| 3503 | return sv; |
| 3504 | } |
| 3505 | |
| 3506 | |
| 3507 | |
| 3508 | SV * |
| 3509 | Perl_newRV_noinc(SV *ref) |
| 3510 | { |
| 3511 | register SV *sv; |
| 3512 | |
| 3513 | sv = newRV(ref); |
| 3514 | SvREFCNT_dec(ref); |
| 3515 | return sv; |
| 3516 | } |
| 3517 | |
| 3518 | /* make an exact duplicate of old */ |
| 3519 | |
| 3520 | SV * |
| 3521 | newSVsv(register SV *old) |
| 3522 | { |
| 3523 | register SV *sv; |
| 3524 | |
| 3525 | if (!old) |
| 3526 | return Nullsv; |
| 3527 | if (SvTYPE(old) == SVTYPEMASK) { |
| 3528 | warn("semi-panic: attempt to dup freed string"); |
| 3529 | return Nullsv; |
| 3530 | } |
| 3531 | new_SV(sv); |
| 3532 | SvANY(sv) = 0; |
| 3533 | SvREFCNT(sv) = 1; |
| 3534 | SvFLAGS(sv) = 0; |
| 3535 | if (SvTEMP(old)) { |
| 3536 | SvTEMP_off(old); |
| 3537 | sv_setsv(sv,old); |
| 3538 | SvTEMP_on(old); |
| 3539 | } |
| 3540 | else |
| 3541 | sv_setsv(sv,old); |
| 3542 | return sv; |
| 3543 | } |
| 3544 | |
| 3545 | void |
| 3546 | sv_reset(register char *s, HV *stash) |
| 3547 | { |
| 3548 | register HE *entry; |
| 3549 | register GV *gv; |
| 3550 | register SV *sv; |
| 3551 | register I32 i; |
| 3552 | register PMOP *pm; |
| 3553 | register I32 max; |
| 3554 | char todo[256]; |
| 3555 | |
| 3556 | if (!stash) |
| 3557 | return; |
| 3558 | |
| 3559 | if (!*s) { /* reset ?? searches */ |
| 3560 | for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) { |
| 3561 | pm->op_pmflags &= ~PMf_USED; |
| 3562 | } |
| 3563 | return; |
| 3564 | } |
| 3565 | |
| 3566 | /* reset variables */ |
| 3567 | |
| 3568 | if (!HvARRAY(stash)) |
| 3569 | return; |
| 3570 | |
| 3571 | Zero(todo, 256, char); |
| 3572 | while (*s) { |
| 3573 | i = *s; |
| 3574 | if (s[1] == '-') { |
| 3575 | s += 2; |
| 3576 | } |
| 3577 | max = *s++; |
| 3578 | for ( ; i <= max; i++) { |
| 3579 | todo[i] = 1; |
| 3580 | } |
| 3581 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
| 3582 | for (entry = HvARRAY(stash)[i]; |
| 3583 | entry; |
| 3584 | entry = HeNEXT(entry)) { |
| 3585 | if (!todo[(U8)*HeKEY(entry)]) |
| 3586 | continue; |
| 3587 | gv = (GV*)HeVAL(entry); |
| 3588 | sv = GvSV(gv); |
| 3589 | (void)SvOK_off(sv); |
| 3590 | if (SvTYPE(sv) >= SVt_PV) { |
| 3591 | SvCUR_set(sv, 0); |
| 3592 | if (SvPVX(sv) != Nullch) |
| 3593 | *SvPVX(sv) = '\0'; |
| 3594 | SvTAINT(sv); |
| 3595 | } |
| 3596 | if (GvAV(gv)) { |
| 3597 | av_clear(GvAV(gv)); |
| 3598 | } |
| 3599 | if (GvHV(gv) && !HvNAME(GvHV(gv))) { |
| 3600 | hv_clear(GvHV(gv)); |
| 3601 | #ifndef VMS /* VMS has no environ array */ |
| 3602 | if (gv == envgv) |
| 3603 | environ[0] = Nullch; |
| 3604 | #endif |
| 3605 | } |
| 3606 | } |
| 3607 | } |
| 3608 | } |
| 3609 | } |
| 3610 | |
| 3611 | IO* |
| 3612 | sv_2io(SV *sv) |
| 3613 | { |
| 3614 | IO* io; |
| 3615 | GV* gv; |
| 3616 | |
| 3617 | switch (SvTYPE(sv)) { |
| 3618 | case SVt_PVIO: |
| 3619 | io = (IO*)sv; |
| 3620 | break; |
| 3621 | case SVt_PVGV: |
| 3622 | gv = (GV*)sv; |
| 3623 | io = GvIO(gv); |
| 3624 | if (!io) |
| 3625 | croak("Bad filehandle: %s", GvNAME(gv)); |
| 3626 | break; |
| 3627 | default: |
| 3628 | if (!SvOK(sv)) |
| 3629 | croak(no_usym, "filehandle"); |
| 3630 | if (SvROK(sv)) |
| 3631 | return sv_2io(SvRV(sv)); |
| 3632 | gv = gv_fetchpv(SvPV(sv,na), FALSE, SVt_PVIO); |
| 3633 | if (gv) |
| 3634 | io = GvIO(gv); |
| 3635 | else |
| 3636 | io = 0; |
| 3637 | if (!io) |
| 3638 | croak("Bad filehandle: %s", SvPV(sv,na)); |
| 3639 | break; |
| 3640 | } |
| 3641 | return io; |
| 3642 | } |
| 3643 | |
| 3644 | CV * |
| 3645 | sv_2cv(SV *sv, HV **st, GV **gvp, I32 lref) |
| 3646 | { |
| 3647 | GV *gv; |
| 3648 | CV *cv; |
| 3649 | |
| 3650 | if (!sv) |
| 3651 | return *gvp = Nullgv, Nullcv; |
| 3652 | switch (SvTYPE(sv)) { |
| 3653 | case SVt_PVCV: |
| 3654 | *st = CvSTASH(sv); |
| 3655 | *gvp = Nullgv; |
| 3656 | return (CV*)sv; |
| 3657 | case SVt_PVHV: |
| 3658 | case SVt_PVAV: |
| 3659 | *gvp = Nullgv; |
| 3660 | return Nullcv; |
| 3661 | case SVt_PVGV: |
| 3662 | gv = (GV*)sv; |
| 3663 | *gvp = gv; |
| 3664 | *st = GvESTASH(gv); |
| 3665 | goto fix_gv; |
| 3666 | |
| 3667 | default: |
| 3668 | if (SvGMAGICAL(sv)) |
| 3669 | mg_get(sv); |
| 3670 | if (SvROK(sv)) { |
| 3671 | cv = (CV*)SvRV(sv); |
| 3672 | if (SvTYPE(cv) != SVt_PVCV) |
| 3673 | croak("Not a subroutine reference"); |
| 3674 | *gvp = Nullgv; |
| 3675 | *st = CvSTASH(cv); |
| 3676 | return cv; |
| 3677 | } |
| 3678 | if (isGV(sv)) |
| 3679 | gv = (GV*)sv; |
| 3680 | else |
| 3681 | gv = gv_fetchpv(SvPV(sv, na), lref, SVt_PVCV); |
| 3682 | *gvp = gv; |
| 3683 | if (!gv) |
| 3684 | return Nullcv; |
| 3685 | *st = GvESTASH(gv); |
| 3686 | fix_gv: |
| 3687 | if (lref && !GvCVu(gv)) { |
| 3688 | SV *tmpsv; |
| 3689 | ENTER; |
| 3690 | tmpsv = NEWSV(704,0); |
| 3691 | gv_efullname3(tmpsv, gv, Nullch); |
| 3692 | newSUB(start_subparse(FALSE, 0), |
| 3693 | newSVOP(OP_CONST, 0, tmpsv), |
| 3694 | Nullop, |
| 3695 | Nullop); |
| 3696 | LEAVE; |
| 3697 | if (!GvCVu(gv)) |
| 3698 | croak("Unable to create sub named \"%s\"", SvPV(sv,na)); |
| 3699 | } |
| 3700 | return GvCVu(gv); |
| 3701 | } |
| 3702 | } |
| 3703 | |
| 3704 | I32 |
| 3705 | sv_true(register SV *sv) |
| 3706 | { |
| 3707 | dTHR; |
| 3708 | if (!sv) |
| 3709 | return 0; |
| 3710 | if (SvPOK(sv)) { |
| 3711 | register XPV* tXpv; |
| 3712 | if ((tXpv = (XPV*)SvANY(sv)) && |
| 3713 | (*tXpv->xpv_pv > '0' || |
| 3714 | tXpv->xpv_cur > 1 || |
| 3715 | (tXpv->xpv_cur && *tXpv->xpv_pv != '0'))) |
| 3716 | return 1; |
| 3717 | else |
| 3718 | return 0; |
| 3719 | } |
| 3720 | else { |
| 3721 | if (SvIOK(sv)) |
| 3722 | return SvIVX(sv) != 0; |
| 3723 | else { |
| 3724 | if (SvNOK(sv)) |
| 3725 | return SvNVX(sv) != 0.0; |
| 3726 | else |
| 3727 | return sv_2bool(sv); |
| 3728 | } |
| 3729 | } |
| 3730 | } |
| 3731 | |
| 3732 | IV |
| 3733 | sv_iv(register SV *sv) |
| 3734 | { |
| 3735 | if (SvIOK(sv)) |
| 3736 | return SvIVX(sv); |
| 3737 | return sv_2iv(sv); |
| 3738 | } |
| 3739 | |
| 3740 | UV |
| 3741 | sv_uv(register SV *sv) |
| 3742 | { |
| 3743 | if (SvIOK(sv)) |
| 3744 | return SvUVX(sv); |
| 3745 | return sv_2uv(sv); |
| 3746 | } |
| 3747 | |
| 3748 | double |
| 3749 | sv_nv(register SV *sv) |
| 3750 | { |
| 3751 | if (SvNOK(sv)) |
| 3752 | return SvNVX(sv); |
| 3753 | return sv_2nv(sv); |
| 3754 | } |
| 3755 | |
| 3756 | char * |
| 3757 | sv_pvn(SV *sv, STRLEN *lp) |
| 3758 | { |
| 3759 | if (SvPOK(sv)) { |
| 3760 | *lp = SvCUR(sv); |
| 3761 | return SvPVX(sv); |
| 3762 | } |
| 3763 | return sv_2pv(sv, lp); |
| 3764 | } |
| 3765 | |
| 3766 | char * |
| 3767 | sv_pvn_force(SV *sv, STRLEN *lp) |
| 3768 | { |
| 3769 | char *s; |
| 3770 | |
| 3771 | if (SvREADONLY(sv)) { |
| 3772 | dTHR; |
| 3773 | if (curcop != &compiling) |
| 3774 | croak(no_modify); |
| 3775 | } |
| 3776 | |
| 3777 | if (SvPOK(sv)) { |
| 3778 | *lp = SvCUR(sv); |
| 3779 | } |
| 3780 | else { |
| 3781 | if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) { |
| 3782 | if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) { |
| 3783 | sv_unglob(sv); |
| 3784 | s = SvPVX(sv); |
| 3785 | *lp = SvCUR(sv); |
| 3786 | } |
| 3787 | else { |
| 3788 | dTHR; |
| 3789 | croak("Can't coerce %s to string in %s", sv_reftype(sv,0), |
| 3790 | op_name[op->op_type]); |
| 3791 | } |
| 3792 | } |
| 3793 | else |
| 3794 | s = sv_2pv(sv, lp); |
| 3795 | if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */ |
| 3796 | STRLEN len = *lp; |
| 3797 | |
| 3798 | if (SvROK(sv)) |
| 3799 | sv_unref(sv); |
| 3800 | (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */ |
| 3801 | SvGROW(sv, len + 1); |
| 3802 | Move(s,SvPVX(sv),len,char); |
| 3803 | SvCUR_set(sv, len); |
| 3804 | *SvEND(sv) = '\0'; |
| 3805 | } |
| 3806 | if (!SvPOK(sv)) { |
| 3807 | SvPOK_on(sv); /* validate pointer */ |
| 3808 | SvTAINT(sv); |
| 3809 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2pv(%s)\n", |
| 3810 | (unsigned long)sv,SvPVX(sv))); |
| 3811 | } |
| 3812 | } |
| 3813 | return SvPVX(sv); |
| 3814 | } |
| 3815 | |
| 3816 | char * |
| 3817 | sv_reftype(SV *sv, int ob) |
| 3818 | { |
| 3819 | if (ob && SvOBJECT(sv)) |
| 3820 | return HvNAME(SvSTASH(sv)); |
| 3821 | else { |
| 3822 | switch (SvTYPE(sv)) { |
| 3823 | case SVt_NULL: |
| 3824 | case SVt_IV: |
| 3825 | case SVt_NV: |
| 3826 | case SVt_RV: |
| 3827 | case SVt_PV: |
| 3828 | case SVt_PVIV: |
| 3829 | case SVt_PVNV: |
| 3830 | case SVt_PVMG: |
| 3831 | case SVt_PVBM: |
| 3832 | if (SvROK(sv)) |
| 3833 | return "REF"; |
| 3834 | else |
| 3835 | return "SCALAR"; |
| 3836 | case SVt_PVLV: return "LVALUE"; |
| 3837 | case SVt_PVAV: return "ARRAY"; |
| 3838 | case SVt_PVHV: return "HASH"; |
| 3839 | case SVt_PVCV: return "CODE"; |
| 3840 | case SVt_PVGV: return "GLOB"; |
| 3841 | case SVt_PVFM: return "FORMLINE"; |
| 3842 | default: return "UNKNOWN"; |
| 3843 | } |
| 3844 | } |
| 3845 | } |
| 3846 | |
| 3847 | int |
| 3848 | sv_isobject(SV *sv) |
| 3849 | { |
| 3850 | if (!sv) |
| 3851 | return 0; |
| 3852 | if (SvGMAGICAL(sv)) |
| 3853 | mg_get(sv); |
| 3854 | if (!SvROK(sv)) |
| 3855 | return 0; |
| 3856 | sv = (SV*)SvRV(sv); |
| 3857 | if (!SvOBJECT(sv)) |
| 3858 | return 0; |
| 3859 | return 1; |
| 3860 | } |
| 3861 | |
| 3862 | int |
| 3863 | sv_isa(SV *sv, char *name) |
| 3864 | { |
| 3865 | if (!sv) |
| 3866 | return 0; |
| 3867 | if (SvGMAGICAL(sv)) |
| 3868 | mg_get(sv); |
| 3869 | if (!SvROK(sv)) |
| 3870 | return 0; |
| 3871 | sv = (SV*)SvRV(sv); |
| 3872 | if (!SvOBJECT(sv)) |
| 3873 | return 0; |
| 3874 | |
| 3875 | return strEQ(HvNAME(SvSTASH(sv)), name); |
| 3876 | } |
| 3877 | |
| 3878 | SV* |
| 3879 | newSVrv(SV *rv, char *classname) |
| 3880 | { |
| 3881 | dTHR; |
| 3882 | SV *sv; |
| 3883 | |
| 3884 | new_SV(sv); |
| 3885 | SvANY(sv) = 0; |
| 3886 | SvREFCNT(sv) = 0; |
| 3887 | SvFLAGS(sv) = 0; |
| 3888 | |
| 3889 | sv_check_thinkfirst(rv); |
| 3890 | #ifdef OVERLOAD |
| 3891 | SvAMAGIC_off(rv); |
| 3892 | #endif /* OVERLOAD */ |
| 3893 | |
| 3894 | if (SvTYPE(rv) < SVt_RV) |
| 3895 | sv_upgrade(rv, SVt_RV); |
| 3896 | |
| 3897 | (void)SvOK_off(rv); |
| 3898 | SvRV(rv) = SvREFCNT_inc(sv); |
| 3899 | SvROK_on(rv); |
| 3900 | |
| 3901 | if (classname) { |
| 3902 | HV* stash = gv_stashpv(classname, TRUE); |
| 3903 | (void)sv_bless(rv, stash); |
| 3904 | } |
| 3905 | return sv; |
| 3906 | } |
| 3907 | |
| 3908 | SV* |
| 3909 | sv_setref_pv(SV *rv, char *classname, void *pv) |
| 3910 | { |
| 3911 | if (!pv) { |
| 3912 | sv_setsv(rv, &sv_undef); |
| 3913 | SvSETMAGIC(rv); |
| 3914 | } |
| 3915 | else |
| 3916 | sv_setiv(newSVrv(rv,classname), (IV)pv); |
| 3917 | return rv; |
| 3918 | } |
| 3919 | |
| 3920 | SV* |
| 3921 | sv_setref_iv(SV *rv, char *classname, IV iv) |
| 3922 | { |
| 3923 | sv_setiv(newSVrv(rv,classname), iv); |
| 3924 | return rv; |
| 3925 | } |
| 3926 | |
| 3927 | SV* |
| 3928 | sv_setref_nv(SV *rv, char *classname, double nv) |
| 3929 | { |
| 3930 | sv_setnv(newSVrv(rv,classname), nv); |
| 3931 | return rv; |
| 3932 | } |
| 3933 | |
| 3934 | SV* |
| 3935 | sv_setref_pvn(SV *rv, char *classname, char *pv, I32 n) |
| 3936 | { |
| 3937 | sv_setpvn(newSVrv(rv,classname), pv, n); |
| 3938 | return rv; |
| 3939 | } |
| 3940 | |
| 3941 | SV* |
| 3942 | sv_bless(SV *sv, HV *stash) |
| 3943 | { |
| 3944 | dTHR; |
| 3945 | SV *ref; |
| 3946 | if (!SvROK(sv)) |
| 3947 | croak("Can't bless non-reference value"); |
| 3948 | ref = SvRV(sv); |
| 3949 | if (SvFLAGS(ref) & (SVs_OBJECT|SVf_READONLY)) { |
| 3950 | if (SvREADONLY(ref)) |
| 3951 | croak(no_modify); |
| 3952 | if (SvOBJECT(ref)) { |
| 3953 | if (SvTYPE(ref) != SVt_PVIO) |
| 3954 | --sv_objcount; |
| 3955 | SvREFCNT_dec(SvSTASH(ref)); |
| 3956 | } |
| 3957 | } |
| 3958 | SvOBJECT_on(ref); |
| 3959 | if (SvTYPE(ref) != SVt_PVIO) |
| 3960 | ++sv_objcount; |
| 3961 | (void)SvUPGRADE(ref, SVt_PVMG); |
| 3962 | SvSTASH(ref) = (HV*)SvREFCNT_inc(stash); |
| 3963 | |
| 3964 | #ifdef OVERLOAD |
| 3965 | if (Gv_AMG(stash)) |
| 3966 | SvAMAGIC_on(sv); |
| 3967 | else |
| 3968 | SvAMAGIC_off(sv); |
| 3969 | #endif /* OVERLOAD */ |
| 3970 | |
| 3971 | return sv; |
| 3972 | } |
| 3973 | |
| 3974 | static void |
| 3975 | sv_unglob(SV *sv) |
| 3976 | { |
| 3977 | assert(SvTYPE(sv) == SVt_PVGV); |
| 3978 | SvFAKE_off(sv); |
| 3979 | if (GvGP(sv)) |
| 3980 | gp_free((GV*)sv); |
| 3981 | sv_unmagic(sv, '*'); |
| 3982 | Safefree(GvNAME(sv)); |
| 3983 | GvMULTI_off(sv); |
| 3984 | SvFLAGS(sv) &= ~SVTYPEMASK; |
| 3985 | SvFLAGS(sv) |= SVt_PVMG; |
| 3986 | } |
| 3987 | |
| 3988 | void |
| 3989 | sv_unref(SV *sv) |
| 3990 | { |
| 3991 | SV* rv = SvRV(sv); |
| 3992 | |
| 3993 | SvRV(sv) = 0; |
| 3994 | SvROK_off(sv); |
| 3995 | if (SvREFCNT(rv) != 1 || SvREADONLY(rv)) |
| 3996 | SvREFCNT_dec(rv); |
| 3997 | else |
| 3998 | sv_2mortal(rv); /* Schedule for freeing later */ |
| 3999 | } |
| 4000 | |
| 4001 | void |
| 4002 | sv_taint(SV *sv) |
| 4003 | { |
| 4004 | sv_magic((sv), Nullsv, 't', Nullch, 0); |
| 4005 | } |
| 4006 | |
| 4007 | void |
| 4008 | sv_untaint(SV *sv) |
| 4009 | { |
| 4010 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
| 4011 | MAGIC *mg = mg_find(sv, 't'); |
| 4012 | if (mg) |
| 4013 | mg->mg_len &= ~1; |
| 4014 | } |
| 4015 | } |
| 4016 | |
| 4017 | bool |
| 4018 | sv_tainted(SV *sv) |
| 4019 | { |
| 4020 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
| 4021 | MAGIC *mg = mg_find(sv, 't'); |
| 4022 | if (mg && ((mg->mg_len & 1) || (mg->mg_len & 2) && mg->mg_obj == sv)) |
| 4023 | return TRUE; |
| 4024 | } |
| 4025 | return FALSE; |
| 4026 | } |
| 4027 | |
| 4028 | void |
| 4029 | sv_setpviv(SV *sv, IV iv) |
| 4030 | { |
| 4031 | STRLEN len; |
| 4032 | char buf[TYPE_DIGITS(UV)]; |
| 4033 | char *ptr = buf + sizeof(buf); |
| 4034 | int sign; |
| 4035 | UV uv; |
| 4036 | char *p; |
| 4037 | |
| 4038 | sv_setpvn(sv, "", 0); |
| 4039 | if (iv >= 0) { |
| 4040 | uv = iv; |
| 4041 | sign = 0; |
| 4042 | } else { |
| 4043 | uv = -iv; |
| 4044 | sign = 1; |
| 4045 | } |
| 4046 | do { |
| 4047 | *--ptr = '0' + (uv % 10); |
| 4048 | } while (uv /= 10); |
| 4049 | len = (buf + sizeof(buf)) - ptr; |
| 4050 | /* taking advantage of SvCUR(sv) == 0 */ |
| 4051 | SvGROW(sv, sign + len + 1); |
| 4052 | p = SvPVX(sv); |
| 4053 | if (sign) |
| 4054 | *p++ = '-'; |
| 4055 | memcpy(p, ptr, len); |
| 4056 | p += len; |
| 4057 | *p = '\0'; |
| 4058 | SvCUR(sv) = p - SvPVX(sv); |
| 4059 | } |
| 4060 | |
| 4061 | #ifdef I_STDARG |
| 4062 | void |
| 4063 | sv_setpvf(SV *sv, const char* pat, ...) |
| 4064 | #else |
| 4065 | /*VARARGS0*/ |
| 4066 | void |
| 4067 | sv_setpvf(sv, pat, va_alist) |
| 4068 | SV *sv; |
| 4069 | const char *pat; |
| 4070 | va_dcl |
| 4071 | #endif |
| 4072 | { |
| 4073 | va_list args; |
| 4074 | #ifdef I_STDARG |
| 4075 | va_start(args, pat); |
| 4076 | #else |
| 4077 | va_start(args); |
| 4078 | #endif |
| 4079 | sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*)); |
| 4080 | va_end(args); |
| 4081 | } |
| 4082 | |
| 4083 | #ifdef I_STDARG |
| 4084 | void |
| 4085 | sv_catpvf(SV *sv, const char* pat, ...) |
| 4086 | #else |
| 4087 | /*VARARGS0*/ |
| 4088 | void |
| 4089 | sv_catpvf(sv, pat, va_alist) |
| 4090 | SV *sv; |
| 4091 | const char *pat; |
| 4092 | va_dcl |
| 4093 | #endif |
| 4094 | { |
| 4095 | va_list args; |
| 4096 | #ifdef I_STDARG |
| 4097 | va_start(args, pat); |
| 4098 | #else |
| 4099 | va_start(args); |
| 4100 | #endif |
| 4101 | sv_vcatpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*)); |
| 4102 | va_end(args); |
| 4103 | } |
| 4104 | |
| 4105 | void |
| 4106 | sv_vsetpvfn(SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *used_locale) |
| 4107 | { |
| 4108 | sv_setpvn(sv, "", 0); |
| 4109 | sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, used_locale); |
| 4110 | } |
| 4111 | |
| 4112 | void |
| 4113 | sv_vcatpvfn(SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *used_locale) |
| 4114 | { |
| 4115 | dTHR; |
| 4116 | char *p; |
| 4117 | char *q; |
| 4118 | char *patend; |
| 4119 | STRLEN origlen; |
| 4120 | I32 svix = 0; |
| 4121 | static char nullstr[] = "(null)"; |
| 4122 | |
| 4123 | /* no matter what, this is a string now */ |
| 4124 | (void)SvPV_force(sv, origlen); |
| 4125 | |
| 4126 | /* special-case "", "%s", and "%_" */ |
| 4127 | if (patlen == 0) |
| 4128 | return; |
| 4129 | if (patlen == 2 && pat[0] == '%') { |
| 4130 | switch (pat[1]) { |
| 4131 | case 's': |
| 4132 | if (args) { |
| 4133 | char *s = va_arg(*args, char*); |
| 4134 | sv_catpv(sv, s ? s : nullstr); |
| 4135 | } |
| 4136 | else if (svix < svmax) |
| 4137 | sv_catsv(sv, *svargs); |
| 4138 | return; |
| 4139 | case '_': |
| 4140 | if (args) { |
| 4141 | sv_catsv(sv, va_arg(*args, SV*)); |
| 4142 | return; |
| 4143 | } |
| 4144 | /* See comment on '_' below */ |
| 4145 | break; |
| 4146 | } |
| 4147 | } |
| 4148 | |
| 4149 | patend = (char*)pat + patlen; |
| 4150 | for (p = (char*)pat; p < patend; p = q) { |
| 4151 | bool alt = FALSE; |
| 4152 | bool left = FALSE; |
| 4153 | char fill = ' '; |
| 4154 | char plus = 0; |
| 4155 | char intsize = 0; |
| 4156 | STRLEN width = 0; |
| 4157 | STRLEN zeros = 0; |
| 4158 | bool has_precis = FALSE; |
| 4159 | STRLEN precis = 0; |
| 4160 | |
| 4161 | char esignbuf[4]; |
| 4162 | STRLEN esignlen = 0; |
| 4163 | |
| 4164 | char *eptr = Nullch; |
| 4165 | STRLEN elen = 0; |
| 4166 | char ebuf[TYPE_DIGITS(int) * 2 + 16]; /* large enough for "%#.#f" */ |
| 4167 | |
| 4168 | static char *efloatbuf = Nullch; |
| 4169 | static STRLEN efloatsize = 0; |
| 4170 | |
| 4171 | char c; |
| 4172 | int i; |
| 4173 | unsigned base; |
| 4174 | IV iv; |
| 4175 | UV uv; |
| 4176 | double nv; |
| 4177 | STRLEN have; |
| 4178 | STRLEN need; |
| 4179 | STRLEN gap; |
| 4180 | |
| 4181 | for (q = p; q < patend && *q != '%'; ++q) ; |
| 4182 | if (q > p) { |
| 4183 | sv_catpvn(sv, p, q - p); |
| 4184 | p = q; |
| 4185 | } |
| 4186 | if (q++ >= patend) |
| 4187 | break; |
| 4188 | |
| 4189 | /* FLAGS */ |
| 4190 | |
| 4191 | while (*q) { |
| 4192 | switch (*q) { |
| 4193 | case ' ': |
| 4194 | case '+': |
| 4195 | plus = *q++; |
| 4196 | continue; |
| 4197 | |
| 4198 | case '-': |
| 4199 | left = TRUE; |
| 4200 | q++; |
| 4201 | continue; |
| 4202 | |
| 4203 | case '0': |
| 4204 | fill = *q++; |
| 4205 | continue; |
| 4206 | |
| 4207 | case '#': |
| 4208 | alt = TRUE; |
| 4209 | q++; |
| 4210 | continue; |
| 4211 | |
| 4212 | default: |
| 4213 | break; |
| 4214 | } |
| 4215 | break; |
| 4216 | } |
| 4217 | |
| 4218 | /* WIDTH */ |
| 4219 | |
| 4220 | switch (*q) { |
| 4221 | case '1': case '2': case '3': |
| 4222 | case '4': case '5': case '6': |
| 4223 | case '7': case '8': case '9': |
| 4224 | width = 0; |
| 4225 | while (isDIGIT(*q)) |
| 4226 | width = width * 10 + (*q++ - '0'); |
| 4227 | break; |
| 4228 | |
| 4229 | case '*': |
| 4230 | if (args) |
| 4231 | i = va_arg(*args, int); |
| 4232 | else |
| 4233 | i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0; |
| 4234 | left |= (i < 0); |
| 4235 | width = (i < 0) ? -i : i; |
| 4236 | q++; |
| 4237 | break; |
| 4238 | } |
| 4239 | |
| 4240 | /* PRECISION */ |
| 4241 | |
| 4242 | if (*q == '.') { |
| 4243 | q++; |
| 4244 | if (*q == '*') { |
| 4245 | if (args) |
| 4246 | i = va_arg(*args, int); |
| 4247 | else |
| 4248 | i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0; |
| 4249 | precis = (i < 0) ? 0 : i; |
| 4250 | q++; |
| 4251 | } |
| 4252 | else { |
| 4253 | precis = 0; |
| 4254 | while (isDIGIT(*q)) |
| 4255 | precis = precis * 10 + (*q++ - '0'); |
| 4256 | } |
| 4257 | has_precis = TRUE; |
| 4258 | } |
| 4259 | |
| 4260 | /* SIZE */ |
| 4261 | |
| 4262 | switch (*q) { |
| 4263 | case 'l': |
| 4264 | #if 0 /* when quads have better support within Perl */ |
| 4265 | if (*(q + 1) == 'l') { |
| 4266 | intsize = 'q'; |
| 4267 | q += 2; |
| 4268 | break; |
| 4269 | } |
| 4270 | #endif |
| 4271 | /* FALL THROUGH */ |
| 4272 | case 'h': |
| 4273 | case 'V': |
| 4274 | intsize = *q++; |
| 4275 | break; |
| 4276 | } |
| 4277 | |
| 4278 | /* CONVERSION */ |
| 4279 | |
| 4280 | switch (c = *q++) { |
| 4281 | |
| 4282 | /* STRINGS */ |
| 4283 | |
| 4284 | case '%': |
| 4285 | eptr = q - 1; |
| 4286 | elen = 1; |
| 4287 | goto string; |
| 4288 | |
| 4289 | case 'c': |
| 4290 | if (args) |
| 4291 | c = va_arg(*args, int); |
| 4292 | else |
| 4293 | c = (svix < svmax) ? SvIVx(svargs[svix++]) : 0; |
| 4294 | eptr = &c; |
| 4295 | elen = 1; |
| 4296 | goto string; |
| 4297 | |
| 4298 | case 's': |
| 4299 | if (args) { |
| 4300 | eptr = va_arg(*args, char*); |
| 4301 | if (eptr) |
| 4302 | elen = strlen(eptr); |
| 4303 | else { |
| 4304 | eptr = nullstr; |
| 4305 | elen = sizeof nullstr - 1; |
| 4306 | } |
| 4307 | } |
| 4308 | else if (svix < svmax) |
| 4309 | eptr = SvPVx(svargs[svix++], elen); |
| 4310 | goto string; |
| 4311 | |
| 4312 | case '_': |
| 4313 | /* |
| 4314 | * The "%_" hack might have to be changed someday, |
| 4315 | * if ISO or ANSI decide to use '_' for something. |
| 4316 | * So we keep it hidden from users' code. |
| 4317 | */ |
| 4318 | if (!args) |
| 4319 | goto unknown; |
| 4320 | eptr = SvPVx(va_arg(*args, SV*), elen); |
| 4321 | |
| 4322 | string: |
| 4323 | if (has_precis && elen > precis) |
| 4324 | elen = precis; |
| 4325 | break; |
| 4326 | |
| 4327 | /* INTEGERS */ |
| 4328 | |
| 4329 | case 'p': |
| 4330 | if (args) |
| 4331 | uv = (UV)va_arg(*args, void*); |
| 4332 | else |
| 4333 | uv = (svix < svmax) ? (UV)svargs[svix++] : 0; |
| 4334 | base = 16; |
| 4335 | goto integer; |
| 4336 | |
| 4337 | case 'D': |
| 4338 | intsize = 'l'; |
| 4339 | /* FALL THROUGH */ |
| 4340 | case 'd': |
| 4341 | case 'i': |
| 4342 | if (args) { |
| 4343 | switch (intsize) { |
| 4344 | case 'h': iv = (short)va_arg(*args, int); break; |
| 4345 | default: iv = va_arg(*args, int); break; |
| 4346 | case 'l': iv = va_arg(*args, long); break; |
| 4347 | case 'V': iv = va_arg(*args, IV); break; |
| 4348 | } |
| 4349 | } |
| 4350 | else { |
| 4351 | iv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0; |
| 4352 | switch (intsize) { |
| 4353 | case 'h': iv = (short)iv; break; |
| 4354 | default: iv = (int)iv; break; |
| 4355 | case 'l': iv = (long)iv; break; |
| 4356 | case 'V': break; |
| 4357 | } |
| 4358 | } |
| 4359 | if (iv >= 0) { |
| 4360 | uv = iv; |
| 4361 | if (plus) |
| 4362 | esignbuf[esignlen++] = plus; |
| 4363 | } |
| 4364 | else { |
| 4365 | uv = -iv; |
| 4366 | esignbuf[esignlen++] = '-'; |
| 4367 | } |
| 4368 | base = 10; |
| 4369 | goto integer; |
| 4370 | |
| 4371 | case 'U': |
| 4372 | intsize = 'l'; |
| 4373 | /* FALL THROUGH */ |
| 4374 | case 'u': |
| 4375 | base = 10; |
| 4376 | goto uns_integer; |
| 4377 | |
| 4378 | case 'O': |
| 4379 | intsize = 'l'; |
| 4380 | /* FALL THROUGH */ |
| 4381 | case 'o': |
| 4382 | base = 8; |
| 4383 | goto uns_integer; |
| 4384 | |
| 4385 | case 'X': |
| 4386 | case 'x': |
| 4387 | base = 16; |
| 4388 | |
| 4389 | uns_integer: |
| 4390 | if (args) { |
| 4391 | switch (intsize) { |
| 4392 | case 'h': uv = (unsigned short)va_arg(*args, unsigned); break; |
| 4393 | default: uv = va_arg(*args, unsigned); break; |
| 4394 | case 'l': uv = va_arg(*args, unsigned long); break; |
| 4395 | case 'V': uv = va_arg(*args, UV); break; |
| 4396 | } |
| 4397 | } |
| 4398 | else { |
| 4399 | uv = (svix < svmax) ? SvUVx(svargs[svix++]) : 0; |
| 4400 | switch (intsize) { |
| 4401 | case 'h': uv = (unsigned short)uv; break; |
| 4402 | default: uv = (unsigned)uv; break; |
| 4403 | case 'l': uv = (unsigned long)uv; break; |
| 4404 | case 'V': break; |
| 4405 | } |
| 4406 | } |
| 4407 | |
| 4408 | integer: |
| 4409 | eptr = ebuf + sizeof ebuf; |
| 4410 | switch (base) { |
| 4411 | unsigned dig; |
| 4412 | case 16: |
| 4413 | p = (c == 'X') ? "0123456789ABCDEF" : "0123456789abcdef"; |
| 4414 | do { |
| 4415 | dig = uv & 15; |
| 4416 | *--eptr = p[dig]; |
| 4417 | } while (uv >>= 4); |
| 4418 | if (alt) { |
| 4419 | esignbuf[esignlen++] = '0'; |
| 4420 | esignbuf[esignlen++] = c; /* 'x' or 'X' */ |
| 4421 | } |
| 4422 | break; |
| 4423 | case 8: |
| 4424 | do { |
| 4425 | dig = uv & 7; |
| 4426 | *--eptr = '0' + dig; |
| 4427 | } while (uv >>= 3); |
| 4428 | if (alt && *eptr != '0') |
| 4429 | *--eptr = '0'; |
| 4430 | break; |
| 4431 | default: /* it had better be ten or less */ |
| 4432 | do { |
| 4433 | dig = uv % base; |
| 4434 | *--eptr = '0' + dig; |
| 4435 | } while (uv /= base); |
| 4436 | break; |
| 4437 | } |
| 4438 | elen = (ebuf + sizeof ebuf) - eptr; |
| 4439 | if (has_precis && precis > elen) |
| 4440 | zeros = precis - elen; |
| 4441 | break; |
| 4442 | |
| 4443 | /* FLOATING POINT */ |
| 4444 | |
| 4445 | case 'F': |
| 4446 | c = 'f'; /* maybe %F isn't supported here */ |
| 4447 | /* FALL THROUGH */ |
| 4448 | case 'e': case 'E': |
| 4449 | case 'f': |
| 4450 | case 'g': case 'G': |
| 4451 | |
| 4452 | /* This is evil, but floating point is even more evil */ |
| 4453 | |
| 4454 | if (args) |
| 4455 | nv = va_arg(*args, double); |
| 4456 | else |
| 4457 | nv = (svix < svmax) ? SvNVx(svargs[svix++]) : 0.0; |
| 4458 | |
| 4459 | need = 0; |
| 4460 | if (c != 'e' && c != 'E') { |
| 4461 | i = PERL_INT_MIN; |
| 4462 | (void)frexp(nv, &i); |
| 4463 | if (i == PERL_INT_MIN) |
| 4464 | die("panic: frexp"); |
| 4465 | if (i > 0) |
| 4466 | need = BIT_DIGITS(i); |
| 4467 | } |
| 4468 | need += has_precis ? precis : 6; /* known default */ |
| 4469 | if (need < width) |
| 4470 | need = width; |
| 4471 | |
| 4472 | need += 20; /* fudge factor */ |
| 4473 | if (efloatsize < need) { |
| 4474 | Safefree(efloatbuf); |
| 4475 | efloatsize = need + 20; /* more fudge */ |
| 4476 | New(906, efloatbuf, efloatsize, char); |
| 4477 | } |
| 4478 | |
| 4479 | eptr = ebuf + sizeof ebuf; |
| 4480 | *--eptr = '\0'; |
| 4481 | *--eptr = c; |
| 4482 | if (has_precis) { |
| 4483 | base = precis; |
| 4484 | do { *--eptr = '0' + (base % 10); } while (base /= 10); |
| 4485 | *--eptr = '.'; |
| 4486 | } |
| 4487 | if (width) { |
| 4488 | base = width; |
| 4489 | do { *--eptr = '0' + (base % 10); } while (base /= 10); |
| 4490 | } |
| 4491 | if (fill == '0') |
| 4492 | *--eptr = fill; |
| 4493 | if (left) |
| 4494 | *--eptr = '-'; |
| 4495 | if (plus) |
| 4496 | *--eptr = plus; |
| 4497 | if (alt) |
| 4498 | *--eptr = '#'; |
| 4499 | *--eptr = '%'; |
| 4500 | |
| 4501 | (void)sprintf(efloatbuf, eptr, nv); |
| 4502 | |
| 4503 | eptr = efloatbuf; |
| 4504 | elen = strlen(efloatbuf); |
| 4505 | |
| 4506 | #ifdef LC_NUMERIC |
| 4507 | /* |
| 4508 | * User-defined locales may include arbitrary characters. |
| 4509 | * And, unfortunately, some system may alloc the "C" locale |
| 4510 | * to be overridden by a malicious user. |
| 4511 | */ |
| 4512 | if (used_locale) |
| 4513 | *used_locale = TRUE; |
| 4514 | #endif /* LC_NUMERIC */ |
| 4515 | |
| 4516 | break; |
| 4517 | |
| 4518 | /* SPECIAL */ |
| 4519 | |
| 4520 | case 'n': |
| 4521 | i = SvCUR(sv) - origlen; |
| 4522 | if (args) { |
| 4523 | switch (intsize) { |
| 4524 | case 'h': *(va_arg(*args, short*)) = i; break; |
| 4525 | default: *(va_arg(*args, int*)) = i; break; |
| 4526 | case 'l': *(va_arg(*args, long*)) = i; break; |
| 4527 | case 'V': *(va_arg(*args, IV*)) = i; break; |
| 4528 | } |
| 4529 | } |
| 4530 | else if (svix < svmax) |
| 4531 | sv_setuv(svargs[svix++], (UV)i); |
| 4532 | continue; /* not "break" */ |
| 4533 | |
| 4534 | /* UNKNOWN */ |
| 4535 | |
| 4536 | default: |
| 4537 | unknown: |
| 4538 | if (!args && dowarn && |
| 4539 | (op->op_type == OP_PRTF || op->op_type == OP_SPRINTF)) { |
| 4540 | SV *msg = sv_newmortal(); |
| 4541 | sv_setpvf(msg, "Invalid conversion in %s: ", |
| 4542 | (op->op_type == OP_PRTF) ? "printf" : "sprintf"); |
| 4543 | if (c) |
| 4544 | sv_catpvf(msg, isPRINT(c) ? "\"%%%c\"" : "\"%%\\%03o\"", |
| 4545 | c & 0xFF); |
| 4546 | else |
| 4547 | sv_catpv(msg, "end of string"); |
| 4548 | warn("%_", msg); /* yes, this is reentrant */ |
| 4549 | } |
| 4550 | |
| 4551 | /* output mangled stuff ... */ |
| 4552 | if (c == '\0') |
| 4553 | --q; |
| 4554 | eptr = p; |
| 4555 | elen = q - p; |
| 4556 | |
| 4557 | /* ... right here, because formatting flags should not apply */ |
| 4558 | SvGROW(sv, SvCUR(sv) + elen + 1); |
| 4559 | p = SvEND(sv); |
| 4560 | memcpy(p, eptr, elen); |
| 4561 | p += elen; |
| 4562 | *p = '\0'; |
| 4563 | SvCUR(sv) = p - SvPVX(sv); |
| 4564 | continue; /* not "break" */ |
| 4565 | } |
| 4566 | |
| 4567 | have = esignlen + zeros + elen; |
| 4568 | need = (have > width ? have : width); |
| 4569 | gap = need - have; |
| 4570 | |
| 4571 | SvGROW(sv, SvCUR(sv) + need + 1); |
| 4572 | p = SvEND(sv); |
| 4573 | if (esignlen && fill == '0') { |
| 4574 | for (i = 0; i < esignlen; i++) |
| 4575 | *p++ = esignbuf[i]; |
| 4576 | } |
| 4577 | if (gap && !left) { |
| 4578 | memset(p, fill, gap); |
| 4579 | p += gap; |
| 4580 | } |
| 4581 | if (esignlen && fill != '0') { |
| 4582 | for (i = 0; i < esignlen; i++) |
| 4583 | *p++ = esignbuf[i]; |
| 4584 | } |
| 4585 | if (zeros) { |
| 4586 | for (i = zeros; i; i--) |
| 4587 | *p++ = '0'; |
| 4588 | } |
| 4589 | if (elen) { |
| 4590 | memcpy(p, eptr, elen); |
| 4591 | p += elen; |
| 4592 | } |
| 4593 | if (gap && left) { |
| 4594 | memset(p, ' ', gap); |
| 4595 | p += gap; |
| 4596 | } |
| 4597 | *p = '\0'; |
| 4598 | SvCUR(sv) = p - SvPVX(sv); |
| 4599 | } |
| 4600 | } |
| 4601 | |
| 4602 | #ifdef DEBUGGING |
| 4603 | void |
| 4604 | sv_dump(SV *sv) |
| 4605 | { |
| 4606 | SV *d = sv_newmortal(); |
| 4607 | char *s; |
| 4608 | U32 flags; |
| 4609 | U32 type; |
| 4610 | |
| 4611 | if (!sv) { |
| 4612 | PerlIO_printf(Perl_debug_log, "SV = 0\n"); |
| 4613 | return; |
| 4614 | } |
| 4615 | |
| 4616 | flags = SvFLAGS(sv); |
| 4617 | type = SvTYPE(sv); |
| 4618 | |
| 4619 | sv_setpvf(d, "(0x%lx)\n REFCNT = %ld\n FLAGS = (", |
| 4620 | (unsigned long)SvANY(sv), (long)SvREFCNT(sv)); |
| 4621 | if (flags & SVs_PADBUSY) sv_catpv(d, "PADBUSY,"); |
| 4622 | if (flags & SVs_PADTMP) sv_catpv(d, "PADTMP,"); |
| 4623 | if (flags & SVs_PADMY) sv_catpv(d, "PADMY,"); |
| 4624 | if (flags & SVs_TEMP) sv_catpv(d, "TEMP,"); |
| 4625 | if (flags & SVs_OBJECT) sv_catpv(d, "OBJECT,"); |
| 4626 | if (flags & SVs_GMG) sv_catpv(d, "GMG,"); |
| 4627 | if (flags & SVs_SMG) sv_catpv(d, "SMG,"); |
| 4628 | if (flags & SVs_RMG) sv_catpv(d, "RMG,"); |
| 4629 | |
| 4630 | if (flags & SVf_IOK) sv_catpv(d, "IOK,"); |
| 4631 | if (flags & SVf_NOK) sv_catpv(d, "NOK,"); |
| 4632 | if (flags & SVf_POK) sv_catpv(d, "POK,"); |
| 4633 | if (flags & SVf_ROK) sv_catpv(d, "ROK,"); |
| 4634 | if (flags & SVf_OOK) sv_catpv(d, "OOK,"); |
| 4635 | if (flags & SVf_FAKE) sv_catpv(d, "FAKE,"); |
| 4636 | if (flags & SVf_READONLY) sv_catpv(d, "READONLY,"); |
| 4637 | |
| 4638 | #ifdef OVERLOAD |
| 4639 | if (flags & SVf_AMAGIC) sv_catpv(d, "OVERLOAD,"); |
| 4640 | #endif /* OVERLOAD */ |
| 4641 | if (flags & SVp_IOK) sv_catpv(d, "pIOK,"); |
| 4642 | if (flags & SVp_NOK) sv_catpv(d, "pNOK,"); |
| 4643 | if (flags & SVp_POK) sv_catpv(d, "pPOK,"); |
| 4644 | if (flags & SVp_SCREAM) sv_catpv(d, "SCREAM,"); |
| 4645 | |
| 4646 | switch (type) { |
| 4647 | case SVt_PVCV: |
| 4648 | case SVt_PVFM: |
| 4649 | if (CvANON(sv)) sv_catpv(d, "ANON,"); |
| 4650 | if (CvUNIQUE(sv)) sv_catpv(d, "UNIQUE,"); |
| 4651 | if (CvCLONE(sv)) sv_catpv(d, "CLONE,"); |
| 4652 | if (CvCLONED(sv)) sv_catpv(d, "CLONED,"); |
| 4653 | if (CvNODEBUG(sv)) sv_catpv(d, "NODEBUG,"); |
| 4654 | break; |
| 4655 | case SVt_PVHV: |
| 4656 | if (HvSHAREKEYS(sv)) sv_catpv(d, "SHAREKEYS,"); |
| 4657 | if (HvLAZYDEL(sv)) sv_catpv(d, "LAZYDEL,"); |
| 4658 | break; |
| 4659 | case SVt_PVGV: |
| 4660 | if (GvINTRO(sv)) sv_catpv(d, "INTRO,"); |
| 4661 | if (GvMULTI(sv)) sv_catpv(d, "MULTI,"); |
| 4662 | if (GvASSUMECV(sv)) sv_catpv(d, "ASSUMECV,"); |
| 4663 | if (GvIMPORTED(sv)) { |
| 4664 | sv_catpv(d, "IMPORT"); |
| 4665 | if (GvIMPORTED(sv) == GVf_IMPORTED) |
| 4666 | sv_catpv(d, "ALL,"); |
| 4667 | else { |
| 4668 | sv_catpv(d, "("); |
| 4669 | if (GvIMPORTED_SV(sv)) sv_catpv(d, " SV"); |
| 4670 | if (GvIMPORTED_AV(sv)) sv_catpv(d, " AV"); |
| 4671 | if (GvIMPORTED_HV(sv)) sv_catpv(d, " HV"); |
| 4672 | if (GvIMPORTED_CV(sv)) sv_catpv(d, " CV"); |
| 4673 | sv_catpv(d, " ),"); |
| 4674 | } |
| 4675 | } |
| 4676 | case SVt_PVBM: |
| 4677 | if (SvTAIL(sv)) sv_catpv(d, "TAIL,"); |
| 4678 | if (SvCOMPILED(sv)) sv_catpv(d, "COMPILED,"); |
| 4679 | break; |
| 4680 | } |
| 4681 | |
| 4682 | if (*(SvEND(d) - 1) == ',') |
| 4683 | SvPVX(d)[--SvCUR(d)] = '\0'; |
| 4684 | sv_catpv(d, ")"); |
| 4685 | s = SvPVX(d); |
| 4686 | |
| 4687 | PerlIO_printf(Perl_debug_log, "SV = "); |
| 4688 | switch (type) { |
| 4689 | case SVt_NULL: |
| 4690 | PerlIO_printf(Perl_debug_log, "NULL%s\n", s); |
| 4691 | return; |
| 4692 | case SVt_IV: |
| 4693 | PerlIO_printf(Perl_debug_log, "IV%s\n", s); |
| 4694 | break; |
| 4695 | case SVt_NV: |
| 4696 | PerlIO_printf(Perl_debug_log, "NV%s\n", s); |
| 4697 | break; |
| 4698 | case SVt_RV: |
| 4699 | PerlIO_printf(Perl_debug_log, "RV%s\n", s); |
| 4700 | break; |
| 4701 | case SVt_PV: |
| 4702 | PerlIO_printf(Perl_debug_log, "PV%s\n", s); |
| 4703 | break; |
| 4704 | case SVt_PVIV: |
| 4705 | PerlIO_printf(Perl_debug_log, "PVIV%s\n", s); |
| 4706 | break; |
| 4707 | case SVt_PVNV: |
| 4708 | PerlIO_printf(Perl_debug_log, "PVNV%s\n", s); |
| 4709 | break; |
| 4710 | case SVt_PVBM: |
| 4711 | PerlIO_printf(Perl_debug_log, "PVBM%s\n", s); |
| 4712 | break; |
| 4713 | case SVt_PVMG: |
| 4714 | PerlIO_printf(Perl_debug_log, "PVMG%s\n", s); |
| 4715 | break; |
| 4716 | case SVt_PVLV: |
| 4717 | PerlIO_printf(Perl_debug_log, "PVLV%s\n", s); |
| 4718 | break; |
| 4719 | case SVt_PVAV: |
| 4720 | PerlIO_printf(Perl_debug_log, "PVAV%s\n", s); |
| 4721 | break; |
| 4722 | case SVt_PVHV: |
| 4723 | PerlIO_printf(Perl_debug_log, "PVHV%s\n", s); |
| 4724 | break; |
| 4725 | case SVt_PVCV: |
| 4726 | PerlIO_printf(Perl_debug_log, "PVCV%s\n", s); |
| 4727 | break; |
| 4728 | case SVt_PVGV: |
| 4729 | PerlIO_printf(Perl_debug_log, "PVGV%s\n", s); |
| 4730 | break; |
| 4731 | case SVt_PVFM: |
| 4732 | PerlIO_printf(Perl_debug_log, "PVFM%s\n", s); |
| 4733 | break; |
| 4734 | case SVt_PVIO: |
| 4735 | PerlIO_printf(Perl_debug_log, "PVIO%s\n", s); |
| 4736 | break; |
| 4737 | default: |
| 4738 | PerlIO_printf(Perl_debug_log, "UNKNOWN%s\n", s); |
| 4739 | return; |
| 4740 | } |
| 4741 | if (type >= SVt_PVIV || type == SVt_IV) |
| 4742 | PerlIO_printf(Perl_debug_log, " IV = %ld\n", (long)SvIVX(sv)); |
| 4743 | if (type >= SVt_PVNV || type == SVt_NV) { |
| 4744 | SET_NUMERIC_STANDARD(); |
| 4745 | PerlIO_printf(Perl_debug_log, " NV = %.*g\n", DBL_DIG, SvNVX(sv)); |
| 4746 | } |
| 4747 | if (SvROK(sv)) { |
| 4748 | PerlIO_printf(Perl_debug_log, " RV = 0x%lx\n", (long)SvRV(sv)); |
| 4749 | sv_dump(SvRV(sv)); |
| 4750 | return; |
| 4751 | } |
| 4752 | if (type < SVt_PV) |
| 4753 | return; |
| 4754 | if (type <= SVt_PVLV) { |
| 4755 | if (SvPVX(sv)) |
| 4756 | PerlIO_printf(Perl_debug_log, " PV = 0x%lx \"%s\"\n CUR = %ld\n LEN = %ld\n", |
| 4757 | (long)SvPVX(sv), SvPVX(sv), (long)SvCUR(sv), (long)SvLEN(sv)); |
| 4758 | else |
| 4759 | PerlIO_printf(Perl_debug_log, " PV = 0\n"); |
| 4760 | } |
| 4761 | if (type >= SVt_PVMG) { |
| 4762 | if (SvMAGIC(sv)) { |
| 4763 | PerlIO_printf(Perl_debug_log, " MAGIC = 0x%lx\n", (long)SvMAGIC(sv)); |
| 4764 | } |
| 4765 | if (SvSTASH(sv)) |
| 4766 | PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(SvSTASH(sv))); |
| 4767 | } |
| 4768 | switch (type) { |
| 4769 | case SVt_PVLV: |
| 4770 | PerlIO_printf(Perl_debug_log, " TYPE = %c\n", LvTYPE(sv)); |
| 4771 | PerlIO_printf(Perl_debug_log, " TARGOFF = %ld\n", (long)LvTARGOFF(sv)); |
| 4772 | PerlIO_printf(Perl_debug_log, " TARGLEN = %ld\n", (long)LvTARGLEN(sv)); |
| 4773 | PerlIO_printf(Perl_debug_log, " TARG = 0x%lx\n", (long)LvTARG(sv)); |
| 4774 | sv_dump(LvTARG(sv)); |
| 4775 | break; |
| 4776 | case SVt_PVAV: |
| 4777 | PerlIO_printf(Perl_debug_log, " ARRAY = 0x%lx\n", (long)AvARRAY(sv)); |
| 4778 | PerlIO_printf(Perl_debug_log, " ALLOC = 0x%lx\n", (long)AvALLOC(sv)); |
| 4779 | PerlIO_printf(Perl_debug_log, " FILL = %ld\n", (long)AvFILLp(sv)); |
| 4780 | PerlIO_printf(Perl_debug_log, " MAX = %ld\n", (long)AvMAX(sv)); |
| 4781 | PerlIO_printf(Perl_debug_log, " ARYLEN = 0x%lx\n", (long)AvARYLEN(sv)); |
| 4782 | flags = AvFLAGS(sv); |
| 4783 | sv_setpv(d, ""); |
| 4784 | if (flags & AVf_REAL) sv_catpv(d, ",REAL"); |
| 4785 | if (flags & AVf_REIFY) sv_catpv(d, ",REIFY"); |
| 4786 | if (flags & AVf_REUSED) sv_catpv(d, ",REUSED"); |
| 4787 | PerlIO_printf(Perl_debug_log, " FLAGS = (%s)\n", |
| 4788 | SvCUR(d) ? SvPVX(d) + 1 : ""); |
| 4789 | break; |
| 4790 | case SVt_PVHV: |
| 4791 | PerlIO_printf(Perl_debug_log, " ARRAY = 0x%lx\n",(long)HvARRAY(sv)); |
| 4792 | PerlIO_printf(Perl_debug_log, " KEYS = %ld\n", (long)HvKEYS(sv)); |
| 4793 | PerlIO_printf(Perl_debug_log, " FILL = %ld\n", (long)HvFILL(sv)); |
| 4794 | PerlIO_printf(Perl_debug_log, " MAX = %ld\n", (long)HvMAX(sv)); |
| 4795 | PerlIO_printf(Perl_debug_log, " RITER = %ld\n", (long)HvRITER(sv)); |
| 4796 | PerlIO_printf(Perl_debug_log, " EITER = 0x%lx\n",(long) HvEITER(sv)); |
| 4797 | if (HvPMROOT(sv)) |
| 4798 | PerlIO_printf(Perl_debug_log, " PMROOT = 0x%lx\n",(long)HvPMROOT(sv)); |
| 4799 | if (HvNAME(sv)) |
| 4800 | PerlIO_printf(Perl_debug_log, " NAME = \"%s\"\n", HvNAME(sv)); |
| 4801 | break; |
| 4802 | case SVt_PVCV: |
| 4803 | if (SvPOK(sv)) |
| 4804 | PerlIO_printf(Perl_debug_log, " PROTOTYPE = \"%s\"\n", SvPV(sv,na)); |
| 4805 | /* FALL THROUGH */ |
| 4806 | case SVt_PVFM: |
| 4807 | PerlIO_printf(Perl_debug_log, " STASH = 0x%lx\n", (long)CvSTASH(sv)); |
| 4808 | PerlIO_printf(Perl_debug_log, " START = 0x%lx\n", (long)CvSTART(sv)); |
| 4809 | PerlIO_printf(Perl_debug_log, " ROOT = 0x%lx\n", (long)CvROOT(sv)); |
| 4810 | PerlIO_printf(Perl_debug_log, " XSUB = 0x%lx\n", (long)CvXSUB(sv)); |
| 4811 | PerlIO_printf(Perl_debug_log, " XSUBANY = %ld\n", (long)CvXSUBANY(sv).any_i32); |
| 4812 | PerlIO_printf(Perl_debug_log, " GV = 0x%lx", (long)CvGV(sv)); |
| 4813 | if (CvGV(sv) && GvNAME(CvGV(sv))) { |
| 4814 | PerlIO_printf(Perl_debug_log, " \"%s\"\n", GvNAME(CvGV(sv))); |
| 4815 | } else { |
| 4816 | PerlIO_printf(Perl_debug_log, "\n"); |
| 4817 | } |
| 4818 | PerlIO_printf(Perl_debug_log, " FILEGV = 0x%lx\n", (long)CvFILEGV(sv)); |
| 4819 | PerlIO_printf(Perl_debug_log, " DEPTH = %ld\n", (long)CvDEPTH(sv)); |
| 4820 | PerlIO_printf(Perl_debug_log, " PADLIST = 0x%lx\n", (long)CvPADLIST(sv)); |
| 4821 | PerlIO_printf(Perl_debug_log, " OUTSIDE = 0x%lx\n", (long)CvOUTSIDE(sv)); |
| 4822 | #ifdef USE_THREADS |
| 4823 | PerlIO_printf(Perl_debug_log, " MUTEXP = 0x%lx\n", (long)CvMUTEXP(sv)); |
| 4824 | PerlIO_printf(Perl_debug_log, " OWNER = 0x%lx\n", (long)CvOWNER(sv)); |
| 4825 | #endif /* USE_THREADS */ |
| 4826 | PerlIO_printf(Perl_debug_log, " FLAGS = 0x%lx\n", |
| 4827 | (unsigned long)CvFLAGS(sv)); |
| 4828 | if (type == SVt_PVFM) |
| 4829 | PerlIO_printf(Perl_debug_log, " LINES = %ld\n", (long)FmLINES(sv)); |
| 4830 | break; |
| 4831 | case SVt_PVGV: |
| 4832 | PerlIO_printf(Perl_debug_log, " NAME = \"%s\"\n", GvNAME(sv)); |
| 4833 | PerlIO_printf(Perl_debug_log, " NAMELEN = %ld\n", (long)GvNAMELEN(sv)); |
| 4834 | PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(GvSTASH(sv))); |
| 4835 | PerlIO_printf(Perl_debug_log, " GP = 0x%lx\n", (long)GvGP(sv)); |
| 4836 | PerlIO_printf(Perl_debug_log, " SV = 0x%lx\n", (long)GvSV(sv)); |
| 4837 | PerlIO_printf(Perl_debug_log, " REFCNT = %ld\n", (long)GvREFCNT(sv)); |
| 4838 | PerlIO_printf(Perl_debug_log, " IO = 0x%lx\n", (long)GvIOp(sv)); |
| 4839 | PerlIO_printf(Perl_debug_log, " FORM = 0x%lx\n", (long)GvFORM(sv)); |
| 4840 | PerlIO_printf(Perl_debug_log, " AV = 0x%lx\n", (long)GvAV(sv)); |
| 4841 | PerlIO_printf(Perl_debug_log, " HV = 0x%lx\n", (long)GvHV(sv)); |
| 4842 | PerlIO_printf(Perl_debug_log, " CV = 0x%lx\n", (long)GvCV(sv)); |
| 4843 | PerlIO_printf(Perl_debug_log, " CVGEN = 0x%lx\n", (long)GvCVGEN(sv)); |
| 4844 | PerlIO_printf(Perl_debug_log, " LASTEXPR = %ld\n", (long)GvLASTEXPR(sv)); |
| 4845 | PerlIO_printf(Perl_debug_log, " LINE = %ld\n", (long)GvLINE(sv)); |
| 4846 | PerlIO_printf(Perl_debug_log, " FILEGV = 0x%lx\n", (long)GvFILEGV(sv)); |
| 4847 | PerlIO_printf(Perl_debug_log, " EGV = 0x%lx\n", (long)GvEGV(sv)); |
| 4848 | break; |
| 4849 | case SVt_PVIO: |
| 4850 | PerlIO_printf(Perl_debug_log, " IFP = 0x%lx\n", (long)IoIFP(sv)); |
| 4851 | PerlIO_printf(Perl_debug_log, " OFP = 0x%lx\n", (long)IoOFP(sv)); |
| 4852 | PerlIO_printf(Perl_debug_log, " DIRP = 0x%lx\n", (long)IoDIRP(sv)); |
| 4853 | PerlIO_printf(Perl_debug_log, " LINES = %ld\n", (long)IoLINES(sv)); |
| 4854 | PerlIO_printf(Perl_debug_log, " PAGE = %ld\n", (long)IoPAGE(sv)); |
| 4855 | PerlIO_printf(Perl_debug_log, " PAGE_LEN = %ld\n", (long)IoPAGE_LEN(sv)); |
| 4856 | PerlIO_printf(Perl_debug_log, " LINES_LEFT = %ld\n", (long)IoLINES_LEFT(sv)); |
| 4857 | PerlIO_printf(Perl_debug_log, " TOP_NAME = \"%s\"\n", IoTOP_NAME(sv)); |
| 4858 | PerlIO_printf(Perl_debug_log, " TOP_GV = 0x%lx\n", (long)IoTOP_GV(sv)); |
| 4859 | PerlIO_printf(Perl_debug_log, " FMT_NAME = \"%s\"\n", IoFMT_NAME(sv)); |
| 4860 | PerlIO_printf(Perl_debug_log, " FMT_GV = 0x%lx\n", (long)IoFMT_GV(sv)); |
| 4861 | PerlIO_printf(Perl_debug_log, " BOTTOM_NAME = \"%s\"\n", IoBOTTOM_NAME(sv)); |
| 4862 | PerlIO_printf(Perl_debug_log, " BOTTOM_GV = 0x%lx\n", (long)IoBOTTOM_GV(sv)); |
| 4863 | PerlIO_printf(Perl_debug_log, " SUBPROCESS = %ld\n", (long)IoSUBPROCESS(sv)); |
| 4864 | PerlIO_printf(Perl_debug_log, " TYPE = %c\n", IoTYPE(sv)); |
| 4865 | PerlIO_printf(Perl_debug_log, " FLAGS = 0x%lx\n", (long)IoFLAGS(sv)); |
| 4866 | break; |
| 4867 | } |
| 4868 | } |
| 4869 | #else |
| 4870 | void |
| 4871 | sv_dump(SV *sv) |
| 4872 | { |
| 4873 | } |
| 4874 | #endif |
| 4875 | |
| 4876 | |
| 4877 | |
| 4878 | |