3 * Copyright (c) 1991-2001, Larry Wall
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.
11 #define PERL_IN_PP_PACK_C
15 * The compiler on Concurrent CX/UX systems has a subtle bug which only
16 * seems to show up when compiling pp.c - it generates the wrong double
17 * precision constant value for (double)UV_MAX when used inline in the body
18 * of the code below, so this makes a static variable up front (which the
19 * compiler seems to get correct) and uses it in place of UV_MAX below.
21 #ifdef CXUX_BROKEN_CONSTANT_CONVERT
22 static double UV_MAX_cxux = ((double)UV_MAX);
26 * Offset for integer pack/unpack.
28 * On architectures where I16 and I32 aren't really 16 and 32 bits,
29 * which for now are all Crays, pack and unpack have to play games.
33 * These values are required for portability of pack() output.
34 * If they're not right on your machine, then pack() and unpack()
35 * wouldn't work right anyway; you'll need to apply the Cray hack.
36 * (I'd like to check them with #if, but you can't use sizeof() in
37 * the preprocessor.) --???
40 The appropriate SHORTSIZE, INTSIZE, LONGSIZE, and LONGLONGSIZE
41 defines are now in config.h. --Andy Dougherty April 1998
46 /* CROSSCOMPILE and MULTIARCH are going to affect pp_pack() and pp_unpack().
49 #if SHORTSIZE != SIZE16 || LONGSIZE != SIZE32
50 # define PERL_NATINT_PACK
53 #if LONGSIZE > 4 && defined(_CRAY)
54 # if BYTEORDER == 0x12345678
55 # define OFF16(p) (char*)(p)
56 # define OFF32(p) (char*)(p)
58 # if BYTEORDER == 0x87654321
59 # define OFF16(p) ((char*)(p) + (sizeof(U16) - SIZE16))
60 # define OFF32(p) ((char*)(p) + (sizeof(U32) - SIZE32))
62 }}}} bad cray byte order
65 # define COPY16(s,p) (*(p) = 0, Copy(s, OFF16(p), SIZE16, char))
66 # define COPY32(s,p) (*(p) = 0, Copy(s, OFF32(p), SIZE32, char))
67 # define COPYNN(s,p,n) (*(p) = 0, Copy(s, (char *)(p), n, char))
68 # define CAT16(sv,p) sv_catpvn(sv, OFF16(p), SIZE16)
69 # define CAT32(sv,p) sv_catpvn(sv, OFF32(p), SIZE32)
71 # define COPY16(s,p) Copy(s, p, SIZE16, char)
72 # define COPY32(s,p) Copy(s, p, SIZE32, char)
73 # define COPYNN(s,p,n) Copy(s, (char *)(p), n, char)
74 # define CAT16(sv,p) sv_catpvn(sv, (char*)(p), SIZE16)
75 # define CAT32(sv,p) sv_catpvn(sv, (char*)(p), SIZE32)
79 S_mul128(pTHX_ SV *sv, U8 m)
82 char *s = SvPV(sv, len);
86 if (!strnEQ(s, "0000", 4)) { /* need to grow sv */
87 SV *tmpNew = newSVpvn("0000000000", 10);
90 SvREFCNT_dec(sv); /* free old sv */
95 while (!*t) /* trailing '\0'? */
98 i = ((*t - '0') << 7) + m;
99 *(t--) = '0' + (i % 10);
105 /* Explosives and implosives. */
107 #if 'I' == 73 && 'J' == 74
108 /* On an ASCII/ISO kind of system */
109 #define ISUUCHAR(ch) ((ch) >= ' ' && (ch) < 'a')
112 Some other sort of character set - use memchr() so we don't match
115 #define ISUUCHAR(ch) (memchr(PL_uuemap, (ch), sizeof(PL_uuemap)-1) || (ch) == ' ')
123 I32 start_sp_offset = SP - PL_stack_base;
128 register char *pat = SvPV(left, llen);
129 #ifdef PACKED_IS_OCTETS
130 /* Packed side is assumed to be octets - so force downgrade if it
131 has been UTF-8 encoded by accident
133 register char *s = SvPVbyte(right, rlen);
135 register char *s = SvPV(right, rlen);
137 char *strend = s + rlen;
139 register char *patend = pat + llen;
142 register I32 bits = 0;
145 /* These must not be in registers: */
162 register U32 culong = 0;
166 #ifdef PERL_NATINT_PACK
167 int natint; /* native integer */
168 int unatint; /* unsigned native integer */
171 if (gimme != G_ARRAY) { /* arrange to do first one only */
173 for (patend = pat; !isALPHA(*patend) || *patend == 'x'; patend++) ;
174 if (strchr("aAZbBhHP", *patend) || *pat == '%') {
176 while (isDIGIT(*patend) || *patend == '*')
182 while (pat < patend) {
184 datumtype = *pat++ & 0xFF;
185 #ifdef PERL_NATINT_PACK
188 if (isSPACE(datumtype))
190 if (datumtype == '#') {
191 while (pat < patend && *pat != '\n')
196 char *natstr = "sSiIlL";
198 if (strchr(natstr, datumtype)) {
199 #ifdef PERL_NATINT_PACK
205 DIE(aTHX_ "'!' allowed only after types %s", natstr);
210 else if (*pat == '*') {
211 len = strend - strbeg; /* long enough */
215 else if (isDIGIT(*pat)) {
217 while (isDIGIT(*pat)) {
218 len = (len * 10) + (*pat++ - '0');
220 DIE(aTHX_ "Repeat count in unpack overflows");
224 len = (datumtype != '@');
228 DIE(aTHX_ "Invalid type in unpack: '%c'", (int)datumtype);
229 case ',': /* grandfather in commas but with a warning */
230 if (commas++ == 0 && ckWARN(WARN_UNPACK))
231 Perl_warner(aTHX_ WARN_UNPACK,
232 "Invalid type in unpack: '%c'", (int)datumtype);
235 if (len == 1 && pat[-1] != '1')
244 if (len > strend - strbeg)
245 DIE(aTHX_ "@ outside of string");
249 if (len > s - strbeg)
250 DIE(aTHX_ "X outside of string");
254 if (len > strend - s)
255 DIE(aTHX_ "x outside of string");
259 if (start_sp_offset >= SP - PL_stack_base)
260 DIE(aTHX_ "/ must follow a numeric type");
263 pat++; /* ignore '*' for compatibility with pack */
265 DIE(aTHX_ "/ cannot take a count" );
272 if (len > strend - s)
277 sv_setpvn(sv, s, len);
279 if (datumtype == 'A' || datumtype == 'Z') {
280 aptr = s; /* borrow register */
281 if (datumtype == 'Z') { /* 'Z' strips stuff after first null */
286 else { /* 'A' strips both nulls and spaces */
287 s = SvPVX(sv) + len - 1;
288 while (s >= SvPVX(sv) && (!*s || isSPACE(*s)))
292 SvCUR_set(sv, s - SvPVX(sv));
293 s = aptr; /* unborrow register */
295 XPUSHs(sv_2mortal(sv));
299 if (star || len > (strend - s) * 8)
300 len = (strend - s) * 8;
303 Newz(601, PL_bitcount, 256, char);
304 for (bits = 1; bits < 256; bits++) {
305 if (bits & 1) PL_bitcount[bits]++;
306 if (bits & 2) PL_bitcount[bits]++;
307 if (bits & 4) PL_bitcount[bits]++;
308 if (bits & 8) PL_bitcount[bits]++;
309 if (bits & 16) PL_bitcount[bits]++;
310 if (bits & 32) PL_bitcount[bits]++;
311 if (bits & 64) PL_bitcount[bits]++;
312 if (bits & 128) PL_bitcount[bits]++;
316 culong += PL_bitcount[*(unsigned char*)s++];
321 if (datumtype == 'b') {
323 if (bits & 1) culong++;
329 if (bits & 128) culong++;
336 sv = NEWSV(35, len + 1);
340 if (datumtype == 'b') {
342 for (len = 0; len < aint; len++) {
343 if (len & 7) /*SUPPRESS 595*/
347 *str++ = '0' + (bits & 1);
352 for (len = 0; len < aint; len++) {
357 *str++ = '0' + ((bits & 128) != 0);
361 XPUSHs(sv_2mortal(sv));
365 if (star || len > (strend - s) * 2)
366 len = (strend - s) * 2;
367 sv = NEWSV(35, len + 1);
371 if (datumtype == 'h') {
373 for (len = 0; len < aint; len++) {
378 *str++ = PL_hexdigit[bits & 15];
383 for (len = 0; len < aint; len++) {
388 *str++ = PL_hexdigit[(bits >> 4) & 15];
392 XPUSHs(sv_2mortal(sv));
395 if (len > strend - s)
400 if (aint >= 128) /* fake up signed chars */
410 if (aint >= 128) /* fake up signed chars */
413 sv_setiv(sv, (IV)aint);
414 PUSHs(sv_2mortal(sv));
419 if (len > strend - s)
434 sv_setiv(sv, (IV)auint);
435 PUSHs(sv_2mortal(sv));
440 if (len > strend - s)
443 while (len-- > 0 && s < strend) {
445 auint = utf8n_to_uvchr((U8*)s, strend - s, &alen, 0);
449 cdouble += (NV)auint;
457 while (len-- > 0 && s < strend) {
459 auint = utf8n_to_uvchr((U8*)s, strend - s, &alen, 0);
463 sv_setuv(sv, (UV)auint);
464 PUSHs(sv_2mortal(sv));
469 #if SHORTSIZE == SIZE16
470 along = (strend - s) / SIZE16;
472 along = (strend - s) / (natint ? sizeof(short) : SIZE16);
477 #if SHORTSIZE != SIZE16
481 COPYNN(s, &ashort, sizeof(short));
492 #if SHORTSIZE > SIZE16
504 #if SHORTSIZE != SIZE16
508 COPYNN(s, &ashort, sizeof(short));
511 sv_setiv(sv, (IV)ashort);
512 PUSHs(sv_2mortal(sv));
520 #if SHORTSIZE > SIZE16
526 sv_setiv(sv, (IV)ashort);
527 PUSHs(sv_2mortal(sv));
535 #if SHORTSIZE == SIZE16
536 along = (strend - s) / SIZE16;
538 unatint = natint && datumtype == 'S';
539 along = (strend - s) / (unatint ? sizeof(unsigned short) : SIZE16);
544 #if SHORTSIZE != SIZE16
546 unsigned short aushort;
548 COPYNN(s, &aushort, sizeof(unsigned short));
549 s += sizeof(unsigned short);
560 if (datumtype == 'n')
561 aushort = PerlSock_ntohs(aushort);
564 if (datumtype == 'v')
565 aushort = vtohs(aushort);
574 #if SHORTSIZE != SIZE16
576 unsigned short aushort;
578 COPYNN(s, &aushort, sizeof(unsigned short));
579 s += sizeof(unsigned short);
581 sv_setiv(sv, (UV)aushort);
582 PUSHs(sv_2mortal(sv));
593 if (datumtype == 'n')
594 aushort = PerlSock_ntohs(aushort);
597 if (datumtype == 'v')
598 aushort = vtohs(aushort);
600 sv_setiv(sv, (UV)aushort);
601 PUSHs(sv_2mortal(sv));
607 along = (strend - s) / sizeof(int);
612 Copy(s, &aint, 1, int);
624 Copy(s, &aint, 1, int);
628 /* Without the dummy below unpack("i", pack("i",-1))
629 * return 0xFFffFFff instead of -1 for Digital Unix V4.0
630 * cc with optimization turned on.
632 * The bug was detected in
633 * DEC C V5.8-009 on Digital UNIX V4.0 (Rev. 1091) (V4.0E)
634 * with optimization (-O4) turned on.
635 * DEC C V5.2-040 on Digital UNIX V4.0 (Rev. 564) (V4.0B)
636 * does not have this problem even with -O4.
638 * This bug was reported as DECC_BUGS 1431
639 * and tracked internally as GEM_BUGS 7775.
641 * The bug is fixed in
642 * Tru64 UNIX V5.0: Compaq C V6.1-006 or later
643 * UNIX V4.0F support: DEC C V5.9-006 or later
644 * UNIX V4.0E support: DEC C V5.8-011 or later
647 * See also few lines later for the same bug.
650 sv_setiv(sv, (IV)aint) :
652 sv_setiv(sv, (IV)aint);
653 PUSHs(sv_2mortal(sv));
658 along = (strend - s) / sizeof(unsigned int);
663 Copy(s, &auint, 1, unsigned int);
664 s += sizeof(unsigned int);
666 cdouble += (NV)auint;
675 Copy(s, &auint, 1, unsigned int);
676 s += sizeof(unsigned int);
679 /* Without the dummy below unpack("I", pack("I",0xFFFFFFFF))
680 * returns 1.84467440737096e+19 instead of 0xFFFFFFFF.
681 * See details few lines earlier. */
683 sv_setuv(sv, (UV)auint) :
685 sv_setuv(sv, (UV)auint);
686 PUSHs(sv_2mortal(sv));
691 #if LONGSIZE == SIZE32
692 along = (strend - s) / SIZE32;
694 along = (strend - s) / (natint ? sizeof(long) : SIZE32);
699 #if LONGSIZE != SIZE32
702 COPYNN(s, &along, sizeof(long));
705 cdouble += (NV)along;
714 #if LONGSIZE > SIZE32 && INTSIZE == SIZE32
718 #if LONGSIZE > SIZE32
719 if (along > 2147483647)
724 cdouble += (NV)along;
733 #if LONGSIZE != SIZE32
736 COPYNN(s, &along, sizeof(long));
739 sv_setiv(sv, (IV)along);
740 PUSHs(sv_2mortal(sv));
747 #if LONGSIZE > SIZE32 && INTSIZE == SIZE32
751 #if LONGSIZE > SIZE32
752 if (along > 2147483647)
757 sv_setiv(sv, (IV)along);
758 PUSHs(sv_2mortal(sv));
766 #if LONGSIZE == SIZE32
767 along = (strend - s) / SIZE32;
769 unatint = natint && datumtype == 'L';
770 along = (strend - s) / (unatint ? sizeof(unsigned long) : SIZE32);
775 #if LONGSIZE != SIZE32
777 unsigned long aulong;
779 COPYNN(s, &aulong, sizeof(unsigned long));
780 s += sizeof(unsigned long);
782 cdouble += (NV)aulong;
794 if (datumtype == 'N')
795 aulong = PerlSock_ntohl(aulong);
798 if (datumtype == 'V')
799 aulong = vtohl(aulong);
802 cdouble += (NV)aulong;
811 #if LONGSIZE != SIZE32
813 unsigned long aulong;
815 COPYNN(s, &aulong, sizeof(unsigned long));
816 s += sizeof(unsigned long);
818 sv_setuv(sv, (UV)aulong);
819 PUSHs(sv_2mortal(sv));
829 if (datumtype == 'N')
830 aulong = PerlSock_ntohl(aulong);
833 if (datumtype == 'V')
834 aulong = vtohl(aulong);
837 sv_setuv(sv, (UV)aulong);
838 PUSHs(sv_2mortal(sv));
844 along = (strend - s) / sizeof(char*);
850 if (sizeof(char*) > strend - s)
853 Copy(s, &aptr, 1, char*);
859 PUSHs(sv_2mortal(sv));
869 while ((len > 0) && (s < strend)) {
870 auv = (auv << 7) | (*s & 0x7f);
871 /* UTF8_IS_XXXXX not right here - using constant 0x80 */
872 if ((U8)(*s++) < 0x80) {
876 PUSHs(sv_2mortal(sv));
880 else if (++bytes >= sizeof(UV)) { /* promote to string */
884 sv = Perl_newSVpvf(aTHX_ "%.*"UVf, (int)TYPE_DIGITS(UV), auv);
886 sv = mul128(sv, *s & 0x7f);
887 if (!(*s++ & 0x80)) {
896 PUSHs(sv_2mortal(sv));
901 if ((s >= strend) && bytes)
902 DIE(aTHX_ "Unterminated compressed integer");
907 if (sizeof(char*) > strend - s)
910 Copy(s, &aptr, 1, char*);
915 sv_setpvn(sv, aptr, len);
916 PUSHs(sv_2mortal(sv));
920 along = (strend - s) / sizeof(Quad_t);
926 if (s + sizeof(Quad_t) > strend)
929 Copy(s, &aquad, 1, Quad_t);
933 if (aquad >= IV_MIN && aquad <= IV_MAX)
934 sv_setiv(sv, (IV)aquad);
936 sv_setnv(sv, (NV)aquad);
937 PUSHs(sv_2mortal(sv));
941 along = (strend - s) / sizeof(Quad_t);
947 if (s + sizeof(Uquad_t) > strend)
950 Copy(s, &auquad, 1, Uquad_t);
951 s += sizeof(Uquad_t);
954 if (auquad <= UV_MAX)
955 sv_setuv(sv, (UV)auquad);
957 sv_setnv(sv, (NV)auquad);
958 PUSHs(sv_2mortal(sv));
962 /* float and double added gnb@melba.bby.oz.au 22/11/89 */
965 along = (strend - s) / sizeof(float);
970 Copy(s, &afloat, 1, float);
979 Copy(s, &afloat, 1, float);
982 sv_setnv(sv, (NV)afloat);
983 PUSHs(sv_2mortal(sv));
989 along = (strend - s) / sizeof(double);
994 Copy(s, &adouble, 1, double);
1003 Copy(s, &adouble, 1, double);
1004 s += sizeof(double);
1006 sv_setnv(sv, (NV)adouble);
1007 PUSHs(sv_2mortal(sv));
1013 * Initialise the decode mapping. By using a table driven
1014 * algorithm, the code will be character-set independent
1015 * (and just as fast as doing character arithmetic)
1017 if (PL_uudmap['M'] == 0) {
1020 for (i = 0; i < sizeof(PL_uuemap); i += 1)
1021 PL_uudmap[(U8)PL_uuemap[i]] = i;
1023 * Because ' ' and '`' map to the same value,
1024 * we need to decode them both the same.
1029 along = (strend - s) * 3 / 4;
1030 sv = NEWSV(42, along);
1033 while (s < strend && *s > ' ' && ISUUCHAR(*s)) {
1038 len = PL_uudmap[*(U8*)s++] & 077;
1040 if (s < strend && ISUUCHAR(*s))
1041 a = PL_uudmap[*(U8*)s++] & 077;
1044 if (s < strend && ISUUCHAR(*s))
1045 b = PL_uudmap[*(U8*)s++] & 077;
1048 if (s < strend && ISUUCHAR(*s))
1049 c = PL_uudmap[*(U8*)s++] & 077;
1052 if (s < strend && ISUUCHAR(*s))
1053 d = PL_uudmap[*(U8*)s++] & 077;
1056 hunk[0] = (a << 2) | (b >> 4);
1057 hunk[1] = (b << 4) | (c >> 2);
1058 hunk[2] = (c << 6) | d;
1059 sv_catpvn(sv, hunk, (len > 3) ? 3 : len);
1064 else if (s[1] == '\n') /* possible checksum byte */
1067 XPUSHs(sv_2mortal(sv));
1072 if (strchr("fFdD", datumtype) ||
1073 (checksum > 32 && strchr("iIlLNU", datumtype)) ) {
1077 while (checksum >= 16) {
1081 while (checksum >= 4) {
1087 along = (1 << checksum) - 1;
1088 while (cdouble < 0.0)
1090 cdouble = Perl_modf(cdouble / adouble, &trouble) * adouble;
1091 sv_setnv(sv, cdouble);
1094 if (checksum < 32) {
1095 aulong = (1 << checksum) - 1;
1098 sv_setuv(sv, (UV)culong);
1100 XPUSHs(sv_2mortal(sv));
1104 if (SP - PL_stack_base == start_sp_offset && gimme == G_SCALAR)
1105 PUSHs(&PL_sv_undef);
1110 S_doencodes(pTHX_ register SV *sv, register char *s, register I32 len)
1114 *hunk = PL_uuemap[len];
1115 sv_catpvn(sv, hunk, 1);
1118 hunk[0] = PL_uuemap[(077 & (*s >> 2))];
1119 hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((s[1] >> 4) & 017)))];
1120 hunk[2] = PL_uuemap[(077 & (((s[1] << 2) & 074) | ((s[2] >> 6) & 03)))];
1121 hunk[3] = PL_uuemap[(077 & (s[2] & 077))];
1122 sv_catpvn(sv, hunk, 4);
1127 char r = (len > 1 ? s[1] : '\0');
1128 hunk[0] = PL_uuemap[(077 & (*s >> 2))];
1129 hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((r >> 4) & 017)))];
1130 hunk[2] = PL_uuemap[(077 & ((r << 2) & 074))];
1131 hunk[3] = PL_uuemap[0];
1132 sv_catpvn(sv, hunk, 4);
1134 sv_catpvn(sv, "\n", 1);
1138 S_is_an_int(pTHX_ char *s, STRLEN l)
1141 SV *result = newSVpvn(s, l);
1142 char *result_c = SvPV(result, n_a); /* convenience */
1143 char *out = result_c;
1153 SvREFCNT_dec(result);
1176 SvREFCNT_dec(result);
1182 SvCUR_set(result, out - result_c);
1186 /* pnum must be '\0' terminated */
1188 S_div128(pTHX_ SV *pnum, bool *done)
1191 char *s = SvPV(pnum, len);
1200 i = m * 10 + (*t - '0');
1202 r = (i >> 7); /* r < 10 */
1209 SvCUR_set(pnum, (STRLEN) (t - s));
1216 dSP; dMARK; dORIGMARK; dTARGET;
1217 register SV *cat = TARG;
1220 register char *pat = SvPVx(*++MARK, fromlen);
1222 register char *patend = pat + fromlen;
1227 static char null10[] = {0,0,0,0,0,0,0,0,0,0};
1228 static char *space10 = " ";
1230 /* These must not be in registers: */
1245 #ifdef PERL_NATINT_PACK
1246 int natint; /* native integer */
1251 sv_setpvn(cat, "", 0);
1253 while (pat < patend) {
1254 SV *lengthcode = Nullsv;
1255 #define NEXTFROM ( lengthcode ? lengthcode : items-- > 0 ? *MARK++ : &PL_sv_no)
1256 datumtype = *pat++ & 0xFF;
1257 #ifdef PERL_NATINT_PACK
1260 if (isSPACE(datumtype)) {
1264 #ifndef PACKED_IS_OCTETS
1265 if (datumtype == 'U' && pat == patcopy+1)
1268 if (datumtype == '#') {
1269 while (pat < patend && *pat != '\n')
1274 char *natstr = "sSiIlL";
1276 if (strchr(natstr, datumtype)) {
1277 #ifdef PERL_NATINT_PACK
1283 DIE(aTHX_ "'!' allowed only after types %s", natstr);
1286 len = strchr("@Xxu", datumtype) ? 0 : items;
1289 else if (isDIGIT(*pat)) {
1291 while (isDIGIT(*pat)) {
1292 len = (len * 10) + (*pat++ - '0');
1294 DIE(aTHX_ "Repeat count in pack overflows");
1301 if ((*pat != 'a' && *pat != 'A' && *pat != 'Z') || pat[1] != '*')
1302 DIE(aTHX_ "/ must be followed by a*, A* or Z*");
1303 lengthcode = sv_2mortal(newSViv(sv_len(items > 0
1304 ? *MARK : &PL_sv_no)
1305 + (*pat == 'Z' ? 1 : 0)));
1309 DIE(aTHX_ "Invalid type in pack: '%c'", (int)datumtype);
1310 case ',': /* grandfather in commas but with a warning */
1311 if (commas++ == 0 && ckWARN(WARN_PACK))
1312 Perl_warner(aTHX_ WARN_PACK,
1313 "Invalid type in pack: '%c'", (int)datumtype);
1316 DIE(aTHX_ "%% may only be used in unpack");
1327 if (SvCUR(cat) < len)
1328 DIE(aTHX_ "X outside of string");
1335 sv_catpvn(cat, null10, 10);
1338 sv_catpvn(cat, null10, len);
1344 aptr = SvPV(fromstr, fromlen);
1345 if (pat[-1] == '*') {
1347 if (datumtype == 'Z')
1350 if (fromlen >= len) {
1351 sv_catpvn(cat, aptr, len);
1352 if (datumtype == 'Z')
1353 *(SvEND(cat)-1) = '\0';
1356 sv_catpvn(cat, aptr, fromlen);
1358 if (datumtype == 'A') {
1360 sv_catpvn(cat, space10, 10);
1363 sv_catpvn(cat, space10, len);
1367 sv_catpvn(cat, null10, 10);
1370 sv_catpvn(cat, null10, len);
1382 str = SvPV(fromstr, fromlen);
1386 SvCUR(cat) += (len+7)/8;
1387 SvGROW(cat, SvCUR(cat) + 1);
1388 aptr = SvPVX(cat) + aint;
1393 if (datumtype == 'B') {
1394 for (len = 0; len++ < aint;) {
1395 items |= *str++ & 1;
1399 *aptr++ = items & 0xff;
1405 for (len = 0; len++ < aint;) {
1411 *aptr++ = items & 0xff;
1417 if (datumtype == 'B')
1418 items <<= 7 - (aint & 7);
1420 items >>= 7 - (aint & 7);
1421 *aptr++ = items & 0xff;
1423 str = SvPVX(cat) + SvCUR(cat);
1438 str = SvPV(fromstr, fromlen);
1442 SvCUR(cat) += (len+1)/2;
1443 SvGROW(cat, SvCUR(cat) + 1);
1444 aptr = SvPVX(cat) + aint;
1449 if (datumtype == 'H') {
1450 for (len = 0; len++ < aint;) {
1452 items |= ((*str++ & 15) + 9) & 15;
1454 items |= *str++ & 15;
1458 *aptr++ = items & 0xff;
1464 for (len = 0; len++ < aint;) {
1466 items |= (((*str++ & 15) + 9) & 15) << 4;
1468 items |= (*str++ & 15) << 4;
1472 *aptr++ = items & 0xff;
1478 *aptr++ = items & 0xff;
1479 str = SvPVX(cat) + SvCUR(cat);
1490 switch (datumtype) {
1492 aint = SvIV(fromstr);
1493 if ((aint < 0 || aint > 255) &&
1495 Perl_warner(aTHX_ WARN_PACK,
1496 "Character in \"C\" format wrapped");
1498 sv_catpvn(cat, &achar, sizeof(char));
1501 aint = SvIV(fromstr);
1502 if ((aint < -128 || aint > 127) &&
1504 Perl_warner(aTHX_ WARN_PACK,
1505 "Character in \"c\" format wrapped");
1507 sv_catpvn(cat, &achar, sizeof(char));
1515 auint = SvUV(fromstr);
1516 SvGROW(cat, SvCUR(cat) + UTF8_MAXLEN + 1);
1517 SvCUR_set(cat, (char*)uvchr_to_utf8((U8*)SvEND(cat),auint)
1522 /* Float and double added by gnb@melba.bby.oz.au 22/11/89 */
1527 afloat = (float)SvNV(fromstr);
1528 sv_catpvn(cat, (char *)&afloat, sizeof (float));
1535 adouble = (double)SvNV(fromstr);
1536 sv_catpvn(cat, (char *)&adouble, sizeof (double));
1542 ashort = (I16)SvIV(fromstr);
1544 ashort = PerlSock_htons(ashort);
1546 CAT16(cat, &ashort);
1552 ashort = (I16)SvIV(fromstr);
1554 ashort = htovs(ashort);
1556 CAT16(cat, &ashort);
1560 #if SHORTSIZE != SIZE16
1562 unsigned short aushort;
1566 aushort = SvUV(fromstr);
1567 sv_catpvn(cat, (char *)&aushort, sizeof(unsigned short));
1577 aushort = (U16)SvUV(fromstr);
1578 CAT16(cat, &aushort);
1584 #if SHORTSIZE != SIZE16
1590 ashort = SvIV(fromstr);
1591 sv_catpvn(cat, (char *)&ashort, sizeof(short));
1599 ashort = (I16)SvIV(fromstr);
1600 CAT16(cat, &ashort);
1607 auint = SvUV(fromstr);
1608 sv_catpvn(cat, (char*)&auint, sizeof(unsigned int));
1614 adouble = Perl_floor(SvNV(fromstr));
1617 DIE(aTHX_ "Cannot compress negative numbers");
1620 #if UVSIZE > 4 && UVSIZE >= NVSIZE
1621 adouble <= 0xffffffff
1623 # ifdef CXUX_BROKEN_CONSTANT_CONVERT
1624 adouble <= UV_MAX_cxux
1631 char buf[1 + sizeof(UV)];
1632 char *in = buf + sizeof(buf);
1633 UV auv = U_V(adouble);
1636 *--in = (auv & 0x7f) | 0x80;
1639 buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */
1640 sv_catpvn(cat, in, (buf + sizeof(buf)) - in);
1642 else if (SvPOKp(fromstr)) { /* decimal string arithmetics */
1643 char *from, *result, *in;
1648 /* Copy string and check for compliance */
1649 from = SvPV(fromstr, len);
1650 if ((norm = is_an_int(from, len)) == NULL)
1651 DIE(aTHX_ "can compress only unsigned integer");
1653 New('w', result, len, char);
1657 *--in = div128(norm, &done) | 0x80;
1658 result[len - 1] &= 0x7F; /* clear continue bit */
1659 sv_catpvn(cat, in, (result + len) - in);
1661 SvREFCNT_dec(norm); /* free norm */
1663 else if (SvNOKp(fromstr)) {
1664 char buf[sizeof(double) * 2]; /* 8/7 <= 2 */
1665 char *in = buf + sizeof(buf);
1668 double next = floor(adouble / 128);
1669 *--in = (unsigned char)(adouble - (next * 128)) | 0x80;
1670 if (in <= buf) /* this cannot happen ;-) */
1671 DIE(aTHX_ "Cannot compress integer");
1673 } while (adouble > 0);
1674 buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */
1675 sv_catpvn(cat, in, (buf + sizeof(buf)) - in);
1678 DIE(aTHX_ "Cannot compress non integer");
1684 aint = SvIV(fromstr);
1685 sv_catpvn(cat, (char*)&aint, sizeof(int));
1691 aulong = SvUV(fromstr);
1693 aulong = PerlSock_htonl(aulong);
1695 CAT32(cat, &aulong);
1701 aulong = SvUV(fromstr);
1703 aulong = htovl(aulong);
1705 CAT32(cat, &aulong);
1709 #if LONGSIZE != SIZE32
1711 unsigned long aulong;
1715 aulong = SvUV(fromstr);
1716 sv_catpvn(cat, (char *)&aulong, sizeof(unsigned long));
1724 aulong = SvUV(fromstr);
1725 CAT32(cat, &aulong);
1730 #if LONGSIZE != SIZE32
1736 along = SvIV(fromstr);
1737 sv_catpvn(cat, (char *)&along, sizeof(long));
1745 along = SvIV(fromstr);
1754 auquad = (Uquad_t)SvUV(fromstr);
1755 sv_catpvn(cat, (char*)&auquad, sizeof(Uquad_t));
1761 aquad = (Quad_t)SvIV(fromstr);
1762 sv_catpvn(cat, (char*)&aquad, sizeof(Quad_t));
1767 len = 1; /* assume SV is correct length */
1772 if (fromstr == &PL_sv_undef)
1776 /* XXX better yet, could spirit away the string to
1777 * a safe spot and hang on to it until the result
1778 * of pack() (and all copies of the result) are
1781 if (ckWARN(WARN_PACK) && (SvTEMP(fromstr)
1782 || (SvPADTMP(fromstr)
1783 && !SvREADONLY(fromstr))))
1785 Perl_warner(aTHX_ WARN_PACK,
1786 "Attempt to pack pointer to temporary value");
1788 if (SvPOK(fromstr) || SvNIOK(fromstr))
1789 aptr = SvPV(fromstr,n_a);
1791 aptr = SvPV_force(fromstr,n_a);
1793 sv_catpvn(cat, (char*)&aptr, sizeof(char*));
1798 aptr = SvPV(fromstr, fromlen);
1799 SvGROW(cat, fromlen * 4 / 3);
1804 while (fromlen > 0) {
1811 doencodes(cat, aptr, todo);