ext/Data/Dumper/Dumper.xs

   1 #include "EXTERN.h"
   2 #include "perl.h"
   3 #include "XSUB.h"
   4
   5 #ifndef PERL_VERSION
   6 #include "patchlevel.h"
   7 #define PERL_VERSION PATCHLEVEL
   8 #endif
   9
  10 #if PERL_VERSION < 5
  11 #  ifndef PL_sv_undef
  12 #    define PL_sv_undef sv_undef
  13 #  endif
  14 #  ifndef ERRSV
  15 #    define ERRSV       GvSV(errgv)
  16 #  endif
  17 #  ifndef newSVpvn
  18 #    define newSVpvn    newSVpv
  19 #  endif
  20 #endif
  21
  22 static I32 num_q (char *s, STRLEN slen);
  23 static I32 esc_q (char *dest, char *src, STRLEN slen);
  24 static SV *sv_x (SV *sv, char *str, STRLEN len, I32 n);
  25 static I32 DD_dump (SV *val, char *name, STRLEN namelen, SV *retval,
  26                     HV *seenhv, AV *postav, I32 *levelp, I32 indent,
  27                     SV *pad, SV *xpad, SV *apad, SV *sep,
  28                     SV *freezer, SV *toaster,
  29                     I32 purity, I32 deepcopy, I32 quotekeys, SV *bless);
  30
  31 /* does a string need to be protected? */
  32 static I32
  33 needs_quote(register char *s)
  34 {
  35 TOP:
  36     if (s[0] == ':') {
  37         if (*++s) {
  38             if (*s++ != ':')
  39                 return 1;
  40         }
  41         else
  42             return 1;
  43     }
  44     if (isIDFIRST(*s)) {
  45         while (*++s)
  46             if (!isALNUM(*s))
  47                 if (*s == ':')
  48                     goto TOP;
  49                 else
  50                     return 1;
  51     }
  52     else
  53         return 1;
  54     return 0;
  55 }
  56
  57 /* count the number of "'"s and "\"s in string */
  58 static I32
  59 num_q(register char *s, register STRLEN slen)
  60 {
  61     register I32 ret = 0;
  62
  63     while (slen > 0) {
  64         if (*s == '\'' || *s == '\\')
  65             ++ret;
  66         ++s;
  67         --slen;
  68     }
  69     return ret;
  70 }
  71
  72
  73 /* returns number of chars added to escape "'"s and "\"s in s */
  74 /* slen number of characters in s will be escaped */
  75 /* destination must be long enough for additional chars */
  76 static I32
  77 esc_q(register char *d, register char *s, register STRLEN slen)
  78 {
  79     register I32 ret = 0;
  80
  81     while (slen > 0) {
  82         switch (*s) {
  83         case '\'':
  84         case '\\':
  85             *d = '\\';
  86             ++d; ++ret;
  87         default:
  88             *d = *s;
  89             ++d; ++s; --slen;
  90             break;
  91         }
  92     }
  93     return ret;
  94 }
  95
  96 /* append a repeated string to an SV */
  97 static SV *
  98 sv_x(SV *sv, register char *str, STRLEN len, I32 n)
  99 {
 100     if (sv == Nullsv)
 101         sv = newSVpvn("", 0);
 102     else
 103         assert(SvTYPE(sv) >= SVt_PV);
 104
 105     if (n > 0) {
 106         SvGROW(sv, len*n + SvCUR(sv) + 1);
 107         if (len == 1) {
 108             char *start = SvPVX(sv) + SvCUR(sv);
 109             SvCUR(sv) += n;
 110             start[n] = '\0';
 111             while (n > 0)
 112                 start[--n] = str[0];
 113         }
 114         else
 115             while (n > 0) {
 116                 sv_catpvn(sv, str, len);
 117                 --n;
 118             }
 119     }
 120     return sv;
 121 }
 122
 123 /*
 124  * This ought to be split into smaller functions. (it is one long function since
 125  * it exactly parallels the perl version, which was one long thing for
 126  * efficiency raisins.)  Ugggh!
 127  */
 128 static I32
 129 DD_dump(SV *val, char *name, STRLEN namelen, SV *retval, HV *seenhv,
 130         AV *postav, I32 *levelp, I32 indent, SV *pad, SV *xpad,
 131         SV *apad, SV *sep, SV *freezer, SV *toaster, I32 purity,
 132         I32 deepcopy, I32 quotekeys, SV *bless)
 133 {
 134     char tmpbuf[128];
 135     U32 i;
 136     char *c, *r, *realpack, id[128];
 137     SV **svp;
 138     SV *sv, *ipad, *ival;
 139     SV *blesspad = Nullsv;
 140     AV *seenentry = Nullav;
 141     char *iname;
 142     STRLEN inamelen, idlen = 0;
 143     U32 flags;
 144     U32 realtype;
 145
 146     if (!val)
 147         return 0;
 148
 149     flags = SvFLAGS(val);
 150     realtype = SvTYPE(val);
 151
 152     if (SvGMAGICAL(val))
 153         mg_get(val);
 154     if (SvROK(val)) {
 155
 156         if (SvOBJECT(SvRV(val)) && freezer &&
 157             SvPOK(freezer) && SvCUR(freezer))
 158         {
 159             dSP; ENTER; SAVETMPS; PUSHMARK(sp);
 160             XPUSHs(val); PUTBACK;
 161             i = perl_call_method(SvPVX(freezer), G_EVAL|G_SCALAR);
 162             SPAGAIN;
 163             if (SvTRUE(ERRSV))
 164                 warn("WARNING(Freezer method call failed): %s",
 165                      SvPVX(ERRSV));
 166             else if (i)
 167                 val = newSVsv(POPs);
 168             PUTBACK; FREETMPS; LEAVE;
 169             if (i)
 170                 (void)sv_2mortal(val);
 171         }
 172
 173         ival = SvRV(val);
 174         flags = SvFLAGS(ival);
 175         realtype = SvTYPE(ival);
 176         (void) sprintf(id, "0x%lx", (unsigned long)ival);
 177         idlen = strlen(id);
 178         if (SvOBJECT(ival))
 179             realpack = HvNAME(SvSTASH(ival));
 180         else
 181             realpack = Nullch;
 182
 183         /* if it has a name, we need to either look it up, or keep a tab
 184          * on it so we know when we hit it later
 185          */
 186         if (namelen) {
 187             if ((svp = hv_fetch(seenhv, id, idlen, FALSE))
 188                 && (sv = *svp) && SvROK(sv) && (seenentry = (AV*)SvRV(sv)))
 189             {
 190                 SV *othername;
 191                 if ((svp = av_fetch(seenentry, 0, FALSE))
 192                     && (othername = *svp))
 193                 {
 194                     if (purity && *levelp > 0) {
 195                         SV *postentry;
 196
 197                         if (realtype == SVt_PVHV)
 198                             sv_catpvn(retval, "{}", 2);
 199                         else if (realtype == SVt_PVAV)
 200                             sv_catpvn(retval, "[]", 2);
 201                         else
 202                             sv_catpvn(retval, "''", 2);
 203                         postentry = newSVpvn(name, namelen);
 204                         sv_catpvn(postentry, " = ", 3);
 205                         sv_catsv(postentry, othername);
 206                         av_push(postav, postentry);
 207                     }
 208                     else {
 209                         if (name[0] == '@' || name[0] == '%') {
 210                             if ((SvPVX(othername))[0] == '\\' &&
 211                                 (SvPVX(othername))[1] == name[0]) {
 212                                 sv_catpvn(retval, SvPVX(othername)+1,
 213                                           SvCUR(othername)-1);
 214                             }
 215                             else {
 216                                 sv_catpvn(retval, name, 1);
 217                                 sv_catpvn(retval, "{", 1);
 218                                 sv_catsv(retval, othername);
 219                                 sv_catpvn(retval, "}", 1);
 220                             }
 221                         }
 222                         else
 223                             sv_catsv(retval, othername);
 224                     }
 225                     return 1;
 226                 }
 227                 else {
 228                     warn("ref name not found for %s", id);
 229                     return 0;
 230                 }
 231             }
 232             else {   /* store our name and continue */
 233                 SV *namesv;
 234                 if (name[0] == '@' || name[0] == '%') {
 235                     namesv = newSVpvn("\\", 1);
 236                     sv_catpvn(namesv, name, namelen);
 237                 }
 238                 else if (realtype == SVt_PVCV && name[0] == '*') {
 239                     namesv = newSVpvn("\\", 2);
 240                     sv_catpvn(namesv, name, namelen);
 241                     (SvPVX(namesv))[1] = '&';
 242                 }
 243                 else
 244                     namesv = newSVpvn(name, namelen);
 245                 seenentry = newAV();
 246                 av_push(seenentry, namesv);
 247                 (void)SvREFCNT_inc(val);
 248                 av_push(seenentry, val);
 249                 (void)hv_store(seenhv, id, strlen(id),
 250                                newRV((SV*)seenentry), 0);
 251                 SvREFCNT_dec(seenentry);
 252             }
 253         }
 254
 255         (*levelp)++;
 256         ipad = sv_x(Nullsv, SvPVX(xpad), SvCUR(xpad), *levelp);
 257
 258         if (realpack) {   /* we have a blessed ref */
 259             STRLEN blesslen;
 260             char *blessstr = SvPV(bless, blesslen);
 261             sv_catpvn(retval, blessstr, blesslen);
 262             sv_catpvn(retval, "( ", 2);
 263             if (indent >= 2) {
 264                 blesspad = apad;
 265                 apad = newSVsv(apad);
 266                 sv_x(apad, " ", 1, blesslen+2);
 267             }
 268         }
 269
 270         if (realtype <= SVt_PVBM) {                          /* scalar ref */
 271             SV *namesv = newSVpvn("${", 2);
 272             sv_catpvn(namesv, name, namelen);
 273             sv_catpvn(namesv, "}", 1);
 274             if (realpack) {                                  /* blessed */
 275                 sv_catpvn(retval, "do{\\(my $o = ", 13);
 276                 DD_dump(ival, SvPVX(namesv), SvCUR(namesv), retval, seenhv,
 277                         postav, levelp, indent, pad, xpad, apad, sep,
 278                         freezer, toaster, purity, deepcopy, quotekeys, bless);
 279                 sv_catpvn(retval, ")}", 2);
 280             }                                                /* plain */
 281             else {
 282                 sv_catpvn(retval, "\\", 1);
 283                 DD_dump(ival, SvPVX(namesv), SvCUR(namesv), retval, seenhv,
 284                         postav, levelp, indent, pad, xpad, apad, sep,
 285                         freezer, toaster, purity, deepcopy, quotekeys, bless);
 286             }
 287             SvREFCNT_dec(namesv);
 288         }
 289         else if (realtype == SVt_PVGV) {                     /* glob ref */
 290             SV *namesv = newSVpvn("*{", 2);
 291             sv_catpvn(namesv, name, namelen);
 292             sv_catpvn(namesv, "}", 1);
 293             sv_catpvn(retval, "\\", 1);
 294             DD_dump(ival, SvPVX(namesv), SvCUR(namesv), retval, seenhv,
 295                     postav, levelp,     indent, pad, xpad, apad, sep,
 296                     freezer, toaster, purity, deepcopy, quotekeys, bless);
 297             SvREFCNT_dec(namesv);
 298         }
 299         else if (realtype == SVt_PVAV) {
 300             SV *totpad;
 301             I32 ix = 0;
 302             I32 ixmax = av_len((AV *)ival);
 303
 304             SV *ixsv = newSViv(0);
 305             /* allowing for a 24 char wide array index */
 306             New(0, iname, namelen+28, char);
 307             (void)strcpy(iname, name);
 308             inamelen = namelen;
 309             if (name[0] == '@') {
 310                 sv_catpvn(retval, "(", 1);
 311                 iname[0] = '$';
 312             }
 313             else {
 314                 sv_catpvn(retval, "[", 1);
 315                 /* omit "->" in $foo{bar}->[0], but not in ${$foo}->[0] */
 316                 /*if (namelen > 0
 317                     && name[namelen-1] != ']' && name[namelen-1] != '}'
 318                     && (namelen < 4 || (name[1] != '{' && name[2] != '{')))*/
 319                 if ((namelen > 0
 320                      && name[namelen-1] != ']' && name[namelen-1] != '}')
 321                     || (namelen > 4
 322                         && (name[1] == '{'
 323                             || (name[0] == '\\' && name[2] == '{'))))
 324                 {
 325                     iname[inamelen++] = '-'; iname[inamelen++] = '>';
 326                     iname[inamelen] = '\0';
 327                 }
 328             }
 329             if (iname[0] == '*' && iname[inamelen-1] == '}' && inamelen >= 8 &&
 330                 (instr(iname+inamelen-8, "{SCALAR}") ||
 331                  instr(iname+inamelen-7, "{ARRAY}") ||
 332                  instr(iname+inamelen-6, "{HASH}"))) {
 333                 iname[inamelen++] = '-'; iname[inamelen++] = '>';
 334             }
 335             iname[inamelen++] = '['; iname[inamelen] = '\0';
 336             totpad = newSVsv(sep);
 337             sv_catsv(totpad, pad);
 338             sv_catsv(totpad, apad);
 339
 340             for (ix = 0; ix <= ixmax; ++ix) {
 341                 STRLEN ilen;
 342                 SV *elem;
 343                 svp = av_fetch((AV*)ival, ix, FALSE);
 344                 if (svp)
 345                     elem = *svp;
 346                 else
 347                     elem = &PL_sv_undef;
 348
 349                 ilen = inamelen;
 350                 sv_setiv(ixsv, ix);
 351                 (void) sprintf(iname+ilen, "%ld", ix);
 352                 ilen = strlen(iname);
 353                 iname[ilen++] = ']'; iname[ilen] = '\0';
 354                 if (indent >= 3) {
 355                     sv_catsv(retval, totpad);
 356                     sv_catsv(retval, ipad);
 357                     sv_catpvn(retval, "#", 1);
 358                     sv_catsv(retval, ixsv);
 359                 }
 360                 sv_catsv(retval, totpad);
 361                 sv_catsv(retval, ipad);
 362                 DD_dump(elem, iname, ilen, retval, seenhv, postav,
 363                         levelp, indent, pad, xpad, apad, sep,
 364                         freezer, toaster, purity, deepcopy, quotekeys, bless);
 365                 if (ix < ixmax)
 366                     sv_catpvn(retval, ",", 1);
 367             }
 368             if (ixmax >= 0) {
 369                 SV *opad = sv_x(Nullsv, SvPVX(xpad), SvCUR(xpad), (*levelp)-1);
 370                 sv_catsv(retval, totpad);
 371                 sv_catsv(retval, opad);
 372                 SvREFCNT_dec(opad);
 373             }
 374             if (name[0] == '@')
 375                 sv_catpvn(retval, ")", 1);
 376             else
 377                 sv_catpvn(retval, "]", 1);
 378             SvREFCNT_dec(ixsv);
 379             SvREFCNT_dec(totpad);
 380             Safefree(iname);
 381         }
 382         else if (realtype == SVt_PVHV) {
 383             SV *totpad, *newapad;
 384             SV *iname, *sname;
 385             HE *entry;
 386             char *key;
 387             I32 klen;
 388             SV *hval;
 389
 390             iname = newSVpvn(name, namelen);
 391             if (name[0] == '%') {
 392                 sv_catpvn(retval, "(", 1);
 393                 (SvPVX(iname))[0] = '$';
 394             }
 395             else {
 396                 sv_catpvn(retval, "{", 1);
 397                 /* omit "->" in $foo[0]->{bar}, but not in ${$foo}->{bar} */
 398                 if ((namelen > 0
 399                      && name[namelen-1] != ']' && name[namelen-1] != '}')
 400                     || (namelen > 4
 401                         && (name[1] == '{'
 402                             || (name[0] == '\\' && name[2] == '{'))))
 403                 {
 404                     sv_catpvn(iname, "->", 2);
 405                 }
 406             }
 407             if (name[0] == '*' && name[namelen-1] == '}' && namelen >= 8 &&
 408                 (instr(name+namelen-8, "{SCALAR}") ||
 409                  instr(name+namelen-7, "{ARRAY}") ||
 410                  instr(name+namelen-6, "{HASH}"))) {
 411                 sv_catpvn(iname, "->", 2);
 412             }
 413             sv_catpvn(iname, "{", 1);
 414             totpad = newSVsv(sep);
 415             sv_catsv(totpad, pad);
 416             sv_catsv(totpad, apad);
 417
 418             (void)hv_iterinit((HV*)ival);
 419             i = 0;
 420             while ((entry = hv_iternext((HV*)ival)))  {
 421                 char *nkey;
 422                 I32 nticks = 0;
 423
 424                 if (i)
 425                     sv_catpvn(retval, ",", 1);
 426                 i++;
 427                 key = hv_iterkey(entry, &klen);
 428                 hval = hv_iterval((HV*)ival, entry);
 429
 430                 if (quotekeys || needs_quote(key)) {
 431                     nticks = num_q(key, klen);
 432                     New(0, nkey, klen+nticks+3, char);
 433                     nkey[0] = '\'';
 434                     if (nticks)
 435                         klen += esc_q(nkey+1, key, klen);
 436                     else
 437                         (void)Copy(key, nkey+1, klen, char);
 438                     nkey[++klen] = '\'';
 439                     nkey[++klen] = '\0';
 440                 }
 441                 else {
 442                     New(0, nkey, klen, char);
 443                     (void)Copy(key, nkey, klen, char);
 444                 }
 445
 446                 sname = newSVsv(iname);
 447                 sv_catpvn(sname, nkey, klen);
 448                 sv_catpvn(sname, "}", 1);
 449
 450                 sv_catsv(retval, totpad);
 451                 sv_catsv(retval, ipad);
 452                 sv_catpvn(retval, nkey, klen);
 453                 sv_catpvn(retval, " => ", 4);
 454                 if (indent >= 2) {
 455                     char *extra;
 456                     I32 elen = 0;
 457                     newapad = newSVsv(apad);
 458                     New(0, extra, klen+4+1, char);
 459                     while (elen < (klen+4))
 460                         extra[elen++] = ' ';
 461                     extra[elen] = '\0';
 462                     sv_catpvn(newapad, extra, elen);
 463                     Safefree(extra);
 464                 }
 465                 else
 466                     newapad = apad;
 467
 468                 DD_dump(hval, SvPVX(sname), SvCUR(sname), retval, seenhv,
 469                         postav, levelp, indent, pad, xpad, newapad, sep,
 470                         freezer, toaster, purity, deepcopy, quotekeys, bless);
 471                 SvREFCNT_dec(sname);
 472                 Safefree(nkey);
 473                 if (indent >= 2)
 474                     SvREFCNT_dec(newapad);
 475             }
 476             if (i) {
 477                 SV *opad = sv_x(Nullsv, SvPVX(xpad), SvCUR(xpad), *levelp-1);
 478                 sv_catsv(retval, totpad);
 479                 sv_catsv(retval, opad);
 480                 SvREFCNT_dec(opad);
 481             }
 482             if (name[0] == '%')
 483                 sv_catpvn(retval, ")", 1);
 484             else
 485                 sv_catpvn(retval, "}", 1);
 486             SvREFCNT_dec(iname);
 487             SvREFCNT_dec(totpad);
 488         }
 489         else if (realtype == SVt_PVCV) {
 490             sv_catpvn(retval, "sub { \"DUMMY\" }", 15);
 491             if (purity)
 492                 warn("Encountered CODE ref, using dummy placeholder");
 493         }
 494         else {
 495             warn("cannot handle ref type %ld", realtype);
 496         }
 497
 498         if (realpack) {  /* free blessed allocs */
 499             if (indent >= 2) {
 500                 SvREFCNT_dec(apad);
 501                 apad = blesspad;
 502             }
 503             sv_catpvn(retval, ", '", 3);
 504             sv_catpvn(retval, realpack, strlen(realpack));
 505             sv_catpvn(retval, "' )", 3);
 506             if (toaster && SvPOK(toaster) && SvCUR(toaster)) {
 507                 sv_catpvn(retval, "->", 2);
 508                 sv_catsv(retval, toaster);
 509                 sv_catpvn(retval, "()", 2);
 510             }
 511         }
 512         SvREFCNT_dec(ipad);
 513         (*levelp)--;
 514     }
 515     else {
 516         STRLEN i;
 517
 518         if (namelen) {
 519             (void) sprintf(id, "0x%lx", (unsigned long)val);
 520             if ((svp = hv_fetch(seenhv, id, (idlen = strlen(id)), FALSE)) &&
 521                 (sv = *svp) && SvROK(sv) &&
 522                 (seenentry = (AV*)SvRV(sv)))
 523             {
 524                 SV *othername;
 525                 if ((svp = av_fetch(seenentry, 0, FALSE)) && (othername = *svp)
 526                     && (svp = av_fetch(seenentry, 2, FALSE)) && *svp && SvIV(*svp) > 0)
 527                 {
 528                     sv_catpvn(retval, "${", 2);
 529                     sv_catsv(retval, othername);
 530                     sv_catpvn(retval, "}", 1);
 531                     return 1;
 532                 }
 533             }
 534             else {
 535                 SV *namesv;
 536                 namesv = newSVpvn("\\", 1);
 537                 sv_catpvn(namesv, name, namelen);
 538                 seenentry = newAV();
 539                 av_push(seenentry, namesv);
 540                 av_push(seenentry, newRV(val));
 541                 (void)hv_store(seenhv, id, strlen(id), newRV((SV*)seenentry), 0);
 542                 SvREFCNT_dec(seenentry);
 543             }
 544         }
 545
 546         if (SvIOK(val)) {
 547             STRLEN len;
 548             i = SvIV(val);
 549             (void) sprintf(tmpbuf, "%d", i);
 550             len = strlen(tmpbuf);
 551             sv_catpvn(retval, tmpbuf, len);
 552         }
 553         else if (realtype == SVt_PVGV) {/* GLOBs can end up with scribbly names */
 554             c = SvPV(val, i);
 555             ++c; --i;                   /* just get the name */
 556             if (i >= 6 && strncmp(c, "main::", 6) == 0) {
 557                 c += 4;
 558                 i -= 4;
 559             }
 560             if (needs_quote(c)) {
 561                 sv_grow(retval, SvCUR(retval)+6+2*i);
 562                 r = SvPVX(retval)+SvCUR(retval);
 563                 r[0] = '*'; r[1] = '{'; r[2] = '\'';
 564                 i += esc_q(r+3, c, i);
 565                 i += 3;
 566                 r[i++] = '\''; r[i++] = '}';
 567                 r[i] = '\0';
 568             }
 569             else {
 570                 sv_grow(retval, SvCUR(retval)+i+2);
 571                 r = SvPVX(retval)+SvCUR(retval);
 572                 r[0] = '*'; strcpy(r+1, c);
 573                 i++;
 574             }
 575             SvCUR_set(retval, SvCUR(retval)+i);
 576
 577             if (purity) {
 578                 static char *entries[] = { "{SCALAR}", "{ARRAY}", "{HASH}" };
 579                 static STRLEN sizes[] = { 8, 7, 6 };
 580                 SV *e;
 581                 SV *nname = newSVpvn("", 0);
 582                 SV *newapad = newSVpvn("", 0);
 583                 GV *gv = (GV*)val;
 584                 I32 j;
 585
 586                 for (j=0; j<3; j++) {
 587                     e = ((j == 0) ? GvSV(gv) : (j == 1) ? (SV*)GvAV(gv) : (SV*)GvHV(gv));
 588                     if (!e)
 589                         continue;
 590                     if (j == 0 && !SvOK(e))
 591                         continue;
 592
 593                     {
 594                         I32 nlevel = 0;
 595                         SV *postentry = newSVpvn(r,i);
 596
 597                         sv_setsv(nname, postentry);
 598                         sv_catpvn(nname, entries[j], sizes[j]);
 599                         sv_catpvn(postentry, " = ", 3);
 600                         av_push(postav, postentry);
 601                         e = newRV(e);
 602
 603                         SvCUR(newapad) = 0;
 604                         if (indent >= 2)
 605                             (void)sv_x(newapad, " ", 1, SvCUR(postentry));
 606
 607                         DD_dump(e, SvPVX(nname), SvCUR(nname), postentry,
 608                                 seenhv, postav, &nlevel, indent, pad, xpad,
 609                                 newapad, sep, freezer, toaster, purity,
 610                                 deepcopy, quotekeys, bless);
 611                         SvREFCNT_dec(e);
 612                     }
 613                 }
 614
 615                 SvREFCNT_dec(newapad);
 616                 SvREFCNT_dec(nname);
 617             }
 618         }
 619         else if (val == &PL_sv_undef || !SvOK(val)) {
 620             sv_catpvn(retval, "undef", 5);
 621         }
 622         else {
 623             c = SvPV(val, i);
 624             sv_grow(retval, SvCUR(retval)+3+2*i);
 625             r = SvPVX(retval)+SvCUR(retval);
 626             r[0] = '\'';
 627             i += esc_q(r+1, c, i);
 628             ++i;
 629             r[i++] = '\'';
 630             r[i] = '\0';
 631             SvCUR_set(retval, SvCUR(retval)+i);
 632         }
 633     }
 634
 635     if (idlen) {
 636         if (deepcopy)
 637             (void)hv_delete(seenhv, id, idlen, G_DISCARD);
 638         else if (namelen && seenentry) {
 639             SV *mark = *av_fetch(seenentry, 2, TRUE);
 640             sv_setiv(mark,1);
 641         }
 642     }
 643     return 1;
 644 }
 645
 646
 647 MODULE = Data::Dumper           PACKAGE = Data::Dumper         PREFIX = Data_Dumper_
 648
 649 #
 650 # This is the exact equivalent of Dump.  Well, almost. The things that are
 651 # different as of now (due to Laziness):
 652 #   * doesnt do double-quotes yet.
 653 #
 654
 655 void
 656 Data_Dumper_Dumpxs(href, ...)
 657         SV      *href;
 658         PROTOTYPE: $;$$
 659         PPCODE:
 660         {
 661             HV *hv;
 662             SV *retval, *valstr;
 663             HV *seenhv = Nullhv;
 664             AV *postav, *todumpav, *namesav;
 665             I32 level = 0;
 666             I32 indent, terse, useqq, i, imax, postlen;
 667             SV **svp;
 668             SV *val, *name, *pad, *xpad, *apad, *sep, *tmp, *varname;
 669             SV *freezer, *toaster, *bless;
 670             I32 purity, deepcopy, quotekeys;
 671             char tmpbuf[1024];
 672             I32 gimme = GIMME;
 673
 674             if (!SvROK(href)) {         /* call new to get an object first */
 675                 SV *valarray;
 676                 SV *namearray;
 677
 678                 if (items == 3) {
 679                     valarray = ST(1);
 680                     namearray = ST(2);
 681                 }
 682                 else
 683                     croak("Usage: Data::Dumper::Dumpxs(PACKAGE, VAL_ARY_REF, NAME_ARY_REF)");
 684
 685                 ENTER;
 686                 SAVETMPS;
 687
 688                 PUSHMARK(sp);
 689                 XPUSHs(href);
 690                 XPUSHs(sv_2mortal(newSVsv(valarray)));
 691                 XPUSHs(sv_2mortal(newSVsv(namearray)));
 692                 PUTBACK;
 693                 i = perl_call_method("new", G_SCALAR);
 694                 SPAGAIN;
 695                 if (i)
 696                     href = newSVsv(POPs);
 697
 698                 PUTBACK;
 699                 FREETMPS;
 700                 LEAVE;
 701                 if (i)
 702                     (void)sv_2mortal(href);
 703             }
 704
 705             todumpav = namesav = Nullav;
 706             seenhv = Nullhv;
 707             val = pad = xpad = apad = sep = tmp = varname
 708                 = freezer = toaster = bless = &PL_sv_undef;
 709             name = sv_newmortal();
 710             indent = 2;
 711             terse = useqq = purity = deepcopy = 0;
 712             quotekeys = 1;
 713
 714             retval = newSVpvn("", 0);
 715             if (SvROK(href)
 716                 && (hv = (HV*)SvRV((SV*)href))
 717                 && SvTYPE(hv) == SVt_PVHV)              {
 718
 719                 if ((svp = hv_fetch(hv, "seen", 4, FALSE)) && SvROK(*svp))
 720                     seenhv = (HV*)SvRV(*svp);
 721                 if ((svp = hv_fetch(hv, "todump", 6, FALSE)) && SvROK(*svp))
 722                     todumpav = (AV*)SvRV(*svp);
 723                 if ((svp = hv_fetch(hv, "names", 5, FALSE)) && SvROK(*svp))
 724                     namesav = (AV*)SvRV(*svp);
 725                 if ((svp = hv_fetch(hv, "indent", 6, FALSE)))
 726                     indent = SvIV(*svp);
 727                 if ((svp = hv_fetch(hv, "purity", 6, FALSE)))
 728                     purity = SvIV(*svp);
 729                 if ((svp = hv_fetch(hv, "terse", 5, FALSE)))
 730                     terse = SvTRUE(*svp);
 731                 if ((svp = hv_fetch(hv, "useqq", 5, FALSE)))
 732                     useqq = SvTRUE(*svp);
 733                 if ((svp = hv_fetch(hv, "pad", 3, FALSE)))
 734                     pad = *svp;
 735                 if ((svp = hv_fetch(hv, "xpad", 4, FALSE)))
 736                     xpad = *svp;
 737                 if ((svp = hv_fetch(hv, "apad", 4, FALSE)))
 738                     apad = *svp;
 739                 if ((svp = hv_fetch(hv, "sep", 3, FALSE)))
 740                     sep = *svp;
 741                 if ((svp = hv_fetch(hv, "varname", 7, FALSE)))
 742                     varname = *svp;
 743                 if ((svp = hv_fetch(hv, "freezer", 7, FALSE)))
 744                     freezer = *svp;
 745                 if ((svp = hv_fetch(hv, "toaster", 7, FALSE)))
 746                     toaster = *svp;
 747                 if ((svp = hv_fetch(hv, "deepcopy", 8, FALSE)))
 748                     deepcopy = SvTRUE(*svp);
 749                 if ((svp = hv_fetch(hv, "quotekeys", 9, FALSE)))
 750                     quotekeys = SvTRUE(*svp);
 751                 if ((svp = hv_fetch(hv, "bless", 5, FALSE)))
 752                     bless = *svp;
 753                 postav = newAV();
 754
 755                 if (todumpav)
 756                     imax = av_len(todumpav);
 757                 else
 758                     imax = -1;
 759                 valstr = newSVpvn("",0);
 760                 for (i = 0; i <= imax; ++i) {
 761                     SV *newapad;
 762
 763                     av_clear(postav);
 764                     if ((svp = av_fetch(todumpav, i, FALSE)))
 765                         val = *svp;
 766                     else
 767                         val = &PL_sv_undef;
 768                     if ((svp = av_fetch(namesav, i, TRUE)))
 769                         sv_setsv(name, *svp);
 770                     else
 771                         SvOK_off(name);
 772
 773                     if (SvOK(name)) {
 774                         if ((SvPVX(name))[0] == '*') {
 775                             if (SvROK(val)) {
 776                                 switch (SvTYPE(SvRV(val))) {
 777                                 case SVt_PVAV:
 778                                     (SvPVX(name))[0] = '@';
 779                                     break;
 780                                 case SVt_PVHV:
 781                                     (SvPVX(name))[0] = '%';
 782                                     break;
 783                                 case SVt_PVCV:
 784                                     (SvPVX(name))[0] = '*';
 785                                     break;
 786                                 default:
 787                                     (SvPVX(name))[0] = '$';
 788                                     break;
 789                                 }
 790                             }
 791                             else
 792                                 (SvPVX(name))[0] = '$';
 793                         }
 794                         else if ((SvPVX(name))[0] != '$')
 795                             sv_insert(name, 0, 0, "$", 1);
 796                     }
 797                     else {
 798                         STRLEN nchars = 0;
 799                         sv_setpvn(name, "$", 1);
 800                         sv_catsv(name, varname);
 801                         (void) sprintf(tmpbuf, "%ld", i+1);
 802                         nchars = strlen(tmpbuf);
 803                         sv_catpvn(name, tmpbuf, nchars);
 804                     }
 805
 806                     if (indent >= 2) {
 807                         SV *tmpsv = sv_x(Nullsv, " ", 1, SvCUR(name)+3);
 808                         newapad = newSVsv(apad);
 809                         sv_catsv(newapad, tmpsv);
 810                         SvREFCNT_dec(tmpsv);
 811                     }
 812                     else
 813                         newapad = apad;
 814
 815                     DD_dump(val, SvPVX(name), SvCUR(name), valstr, seenhv,
 816                             postav, &level, indent, pad, xpad, newapad, sep,
 817                             freezer, toaster, purity, deepcopy, quotekeys,
 818                             bless);
 819
 820                     if (indent >= 2)
 821                         SvREFCNT_dec(newapad);
 822
 823                     postlen = av_len(postav);
 824                     if (postlen >= 0 || !terse) {
 825                         sv_insert(valstr, 0, 0, " = ", 3);
 826                         sv_insert(valstr, 0, 0, SvPVX(name), SvCUR(name));
 827                         sv_catpvn(valstr, ";", 1);
 828                     }
 829                     sv_catsv(retval, pad);
 830                     sv_catsv(retval, valstr);
 831                     sv_catsv(retval, sep);
 832                     if (postlen >= 0) {
 833                         I32 i;
 834                         sv_catsv(retval, pad);
 835                         for (i = 0; i <= postlen; ++i) {
 836                             SV *elem;
 837                             svp = av_fetch(postav, i, FALSE);
 838                             if (svp && (elem = *svp)) {
 839                                 sv_catsv(retval, elem);
 840                                 if (i < postlen) {
 841                                     sv_catpvn(retval, ";", 1);
 842                                     sv_catsv(retval, sep);
 843                                     sv_catsv(retval, pad);
 844                                 }
 845                             }
 846                         }
 847                         sv_catpvn(retval, ";", 1);
 848                             sv_catsv(retval, sep);
 849                     }
 850                     sv_setpvn(valstr, "", 0);
 851                     if (gimme == G_ARRAY) {
 852                         XPUSHs(sv_2mortal(retval));
 853                         if (i < imax)   /* not the last time thro ? */
 854                             retval = newSVpvn("",0);
 855                     }
 856                 }
 857                 SvREFCNT_dec(postav);
 858                 SvREFCNT_dec(valstr);
 859             }
 860             else
 861                 croak("Call to new() method failed to return HASH ref");
 862             if (gimme == G_SCALAR)
 863                 XPUSHs(sv_2mortal(retval));
 864         }