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: */
164 const int bits_in_uv = 8 * sizeof(culong);
167 #ifdef PERL_NATINT_PACK
168 int natint; /* native integer */
169 int unatint; /* unsigned native integer */
171 bool do_utf8 = DO_UTF8(right);
173 while (pat < patend) {
175 datumtype = *pat++ & 0xFF;
176 #ifdef PERL_NATINT_PACK
179 if (isSPACE(datumtype))
181 if (datumtype == '#') {
182 while (pat < patend && *pat != '\n')
187 char *natstr = "sSiIlL";
189 if (strchr(natstr, datumtype)) {
190 #ifdef PERL_NATINT_PACK
196 DIE(aTHX_ "'!' allowed only after types %s", natstr);
201 else if (*pat == '*') {
202 len = strend - strbeg; /* long enough */
206 else if (isDIGIT(*pat)) {
208 while (isDIGIT(*pat)) {
209 len = (len * 10) + (*pat++ - '0');
211 DIE(aTHX_ "Repeat count in unpack overflows");
215 len = (datumtype != '@');
219 DIE(aTHX_ "Invalid type in unpack: '%c'", (int)datumtype);
220 case ',': /* grandfather in commas but with a warning */
221 if (commas++ == 0 && ckWARN(WARN_UNPACK))
222 Perl_warner(aTHX_ WARN_UNPACK,
223 "Invalid type in unpack: '%c'", (int)datumtype);
226 if (len == 1 && pat[-1] != '1')
235 if (len > strend - strbeg)
236 DIE(aTHX_ "@ outside of string");
240 if (len > s - strbeg)
241 DIE(aTHX_ "X outside of string");
245 if (len > strend - s)
246 DIE(aTHX_ "x outside of string");
250 if (start_sp_offset >= SP - PL_stack_base)
251 DIE(aTHX_ "/ must follow a numeric type");
254 pat++; /* ignore '*' for compatibility with pack */
256 DIE(aTHX_ "/ cannot take a count" );
263 if (len > strend - s)
268 sv_setpvn(sv, s, len);
270 if (datumtype == 'A' || datumtype == 'Z') {
271 aptr = s; /* borrow register */
272 if (datumtype == 'Z') { /* 'Z' strips stuff after first null */
277 else { /* 'A' strips both nulls and spaces */
278 s = SvPVX(sv) + len - 1;
279 while (s >= SvPVX(sv) && (!*s || isSPACE(*s)))
283 SvCUR_set(sv, s - SvPVX(sv));
284 s = aptr; /* unborrow register */
286 XPUSHs(sv_2mortal(sv));
290 if (star || len > (strend - s) * 8)
291 len = (strend - s) * 8;
294 Newz(601, PL_bitcount, 256, char);
295 for (bits = 1; bits < 256; bits++) {
296 if (bits & 1) PL_bitcount[bits]++;
297 if (bits & 2) PL_bitcount[bits]++;
298 if (bits & 4) PL_bitcount[bits]++;
299 if (bits & 8) PL_bitcount[bits]++;
300 if (bits & 16) PL_bitcount[bits]++;
301 if (bits & 32) PL_bitcount[bits]++;
302 if (bits & 64) PL_bitcount[bits]++;
303 if (bits & 128) PL_bitcount[bits]++;
307 culong += PL_bitcount[*(unsigned char*)s++];
312 if (datumtype == 'b') {
314 if (bits & 1) culong++;
320 if (bits & 128) culong++;
327 sv = NEWSV(35, len + 1);
331 if (datumtype == 'b') {
333 for (len = 0; len < aint; len++) {
334 if (len & 7) /*SUPPRESS 595*/
338 *str++ = '0' + (bits & 1);
343 for (len = 0; len < aint; len++) {
348 *str++ = '0' + ((bits & 128) != 0);
352 XPUSHs(sv_2mortal(sv));
356 if (star || len > (strend - s) * 2)
357 len = (strend - s) * 2;
358 sv = NEWSV(35, len + 1);
362 if (datumtype == 'h') {
364 for (len = 0; len < aint; len++) {
369 *str++ = PL_hexdigit[bits & 15];
374 for (len = 0; len < aint; len++) {
379 *str++ = PL_hexdigit[(bits >> 4) & 15];
383 XPUSHs(sv_2mortal(sv));
386 if (len > strend - s)
391 if (aint >= 128) /* fake up signed chars */
393 if (checksum > bits_in_uv)
404 if (aint >= 128) /* fake up signed chars */
407 sv_setiv(sv, (IV)aint);
408 PUSHs(sv_2mortal(sv));
413 unpack_C: /* unpack U will jump here if not UTF-8 */
418 if (len > strend - s)
433 sv_setiv(sv, (IV)auint);
434 PUSHs(sv_2mortal(sv));
445 if (len > strend - s)
448 while (len-- > 0 && s < strend) {
450 auint = utf8n_to_uvchr((U8*)s, strend - s, &alen, 0);
453 if (checksum > bits_in_uv)
454 cdouble += (NV)auint;
462 while (len-- > 0 && s < strend) {
464 auint = utf8n_to_uvchr((U8*)s, strend - s, &alen, 0);
468 sv_setuv(sv, (UV)auint);
469 PUSHs(sv_2mortal(sv));
474 #if SHORTSIZE == SIZE16
475 along = (strend - s) / SIZE16;
477 along = (strend - s) / (natint ? sizeof(short) : SIZE16);
482 #if SHORTSIZE != SIZE16
486 COPYNN(s, &ashort, sizeof(short));
488 if (checksum > bits_in_uv)
489 cdouble += (NV)ashort;
500 #if SHORTSIZE > SIZE16
505 if (checksum > bits_in_uv)
506 cdouble += (NV)ashort;
515 #if SHORTSIZE != SIZE16
519 COPYNN(s, &ashort, sizeof(short));
522 sv_setiv(sv, (IV)ashort);
523 PUSHs(sv_2mortal(sv));
531 #if SHORTSIZE > SIZE16
537 sv_setiv(sv, (IV)ashort);
538 PUSHs(sv_2mortal(sv));
546 #if SHORTSIZE == SIZE16
547 along = (strend - s) / SIZE16;
549 unatint = natint && datumtype == 'S';
550 along = (strend - s) / (unatint ? sizeof(unsigned short) : SIZE16);
555 #if SHORTSIZE != SIZE16
557 unsigned short aushort;
559 COPYNN(s, &aushort, sizeof(unsigned short));
560 s += sizeof(unsigned short);
561 if (checksum > bits_in_uv)
562 cdouble += (NV)aushort;
574 if (datumtype == 'n')
575 aushort = PerlSock_ntohs(aushort);
578 if (datumtype == 'v')
579 aushort = vtohs(aushort);
581 if (checksum > bits_in_uv)
582 cdouble += (NV)aushort;
591 #if SHORTSIZE != SIZE16
593 unsigned short aushort;
595 COPYNN(s, &aushort, sizeof(unsigned short));
596 s += sizeof(unsigned short);
598 sv_setiv(sv, (UV)aushort);
599 PUSHs(sv_2mortal(sv));
610 if (datumtype == 'n')
611 aushort = PerlSock_ntohs(aushort);
614 if (datumtype == 'v')
615 aushort = vtohs(aushort);
617 sv_setiv(sv, (UV)aushort);
618 PUSHs(sv_2mortal(sv));
624 along = (strend - s) / sizeof(int);
629 Copy(s, &aint, 1, int);
631 if (checksum > bits_in_uv)
641 Copy(s, &aint, 1, int);
645 /* Without the dummy below unpack("i", pack("i",-1))
646 * return 0xFFffFFff instead of -1 for Digital Unix V4.0
647 * cc with optimization turned on.
649 * The bug was detected in
650 * DEC C V5.8-009 on Digital UNIX V4.0 (Rev. 1091) (V4.0E)
651 * with optimization (-O4) turned on.
652 * DEC C V5.2-040 on Digital UNIX V4.0 (Rev. 564) (V4.0B)
653 * does not have this problem even with -O4.
655 * This bug was reported as DECC_BUGS 1431
656 * and tracked internally as GEM_BUGS 7775.
658 * The bug is fixed in
659 * Tru64 UNIX V5.0: Compaq C V6.1-006 or later
660 * UNIX V4.0F support: DEC C V5.9-006 or later
661 * UNIX V4.0E support: DEC C V5.8-011 or later
664 * See also few lines later for the same bug.
667 sv_setiv(sv, (IV)aint) :
669 sv_setiv(sv, (IV)aint);
670 PUSHs(sv_2mortal(sv));
675 along = (strend - s) / sizeof(unsigned int);
680 Copy(s, &auint, 1, unsigned int);
681 s += sizeof(unsigned int);
682 if (checksum > bits_in_uv)
683 cdouble += (NV)auint;
692 Copy(s, &auint, 1, unsigned int);
693 s += sizeof(unsigned int);
696 /* Without the dummy below unpack("I", pack("I",0xFFFFFFFF))
697 * returns 1.84467440737096e+19 instead of 0xFFFFFFFF.
698 * See details few lines earlier. */
700 sv_setuv(sv, (UV)auint) :
702 sv_setuv(sv, (UV)auint);
703 PUSHs(sv_2mortal(sv));
708 #if LONGSIZE == SIZE32
709 along = (strend - s) / SIZE32;
711 along = (strend - s) / (natint ? sizeof(long) : SIZE32);
716 #if LONGSIZE != SIZE32
719 COPYNN(s, &along, sizeof(long));
721 if (checksum > bits_in_uv)
722 cdouble += (NV)along;
731 #if LONGSIZE > SIZE32 && INTSIZE == SIZE32
735 #if LONGSIZE > SIZE32
736 if (along > 2147483647)
740 if (checksum > bits_in_uv)
741 cdouble += (NV)along;
750 #if LONGSIZE != SIZE32
753 COPYNN(s, &along, sizeof(long));
756 sv_setiv(sv, (IV)along);
757 PUSHs(sv_2mortal(sv));
764 #if LONGSIZE > SIZE32 && INTSIZE == SIZE32
768 #if LONGSIZE > SIZE32
769 if (along > 2147483647)
774 sv_setiv(sv, (IV)along);
775 PUSHs(sv_2mortal(sv));
783 #if LONGSIZE == SIZE32
784 along = (strend - s) / SIZE32;
786 unatint = natint && datumtype == 'L';
787 along = (strend - s) / (unatint ? sizeof(unsigned long) : SIZE32);
792 #if LONGSIZE != SIZE32
794 unsigned long aulong;
796 COPYNN(s, &aulong, sizeof(unsigned long));
797 s += sizeof(unsigned long);
798 if (checksum > bits_in_uv)
799 cdouble += (NV)aulong;
811 if (datumtype == 'N')
812 aulong = PerlSock_ntohl(aulong);
815 if (datumtype == 'V')
816 aulong = vtohl(aulong);
818 if (checksum > bits_in_uv)
819 cdouble += (NV)aulong;
828 #if LONGSIZE != SIZE32
830 unsigned long aulong;
832 COPYNN(s, &aulong, sizeof(unsigned long));
833 s += sizeof(unsigned long);
835 sv_setuv(sv, (UV)aulong);
836 PUSHs(sv_2mortal(sv));
846 if (datumtype == 'N')
847 aulong = PerlSock_ntohl(aulong);
850 if (datumtype == 'V')
851 aulong = vtohl(aulong);
854 sv_setuv(sv, (UV)aulong);
855 PUSHs(sv_2mortal(sv));
861 along = (strend - s) / sizeof(char*);
867 if (sizeof(char*) > strend - s)
870 Copy(s, &aptr, 1, char*);
876 PUSHs(sv_2mortal(sv));
886 while ((len > 0) && (s < strend)) {
887 auv = (auv << 7) | (*s & 0x7f);
888 /* UTF8_IS_XXXXX not right here - using constant 0x80 */
889 if ((U8)(*s++) < 0x80) {
893 PUSHs(sv_2mortal(sv));
897 else if (++bytes >= sizeof(UV)) { /* promote to string */
901 sv = Perl_newSVpvf(aTHX_ "%.*"UVf, (int)TYPE_DIGITS(UV), auv);
903 sv = mul128(sv, *s & 0x7f);
904 if (!(*s++ & 0x80)) {
913 PUSHs(sv_2mortal(sv));
918 if ((s >= strend) && bytes)
919 DIE(aTHX_ "Unterminated compressed integer");
924 if (sizeof(char*) > strend - s)
927 Copy(s, &aptr, 1, char*);
932 sv_setpvn(sv, aptr, len);
933 PUSHs(sv_2mortal(sv));
937 along = (strend - s) / sizeof(Quad_t);
942 Copy(s, &aquad, 1, Quad_t);
944 if (checksum > bits_in_uv)
945 cdouble += (NV)aquad;
954 if (s + sizeof(Quad_t) > strend)
957 Copy(s, &aquad, 1, Quad_t);
961 if (aquad >= IV_MIN && aquad <= IV_MAX)
962 sv_setiv(sv, (IV)aquad);
964 sv_setnv(sv, (NV)aquad);
965 PUSHs(sv_2mortal(sv));
970 along = (strend - s) / sizeof(Quad_t);
975 Copy(s, &auquad, 1, Uquad_t);
976 s += sizeof(Uquad_t);
977 if (checksum > bits_in_uv)
978 cdouble += (NV)auquad;
987 if (s + sizeof(Uquad_t) > strend)
990 Copy(s, &auquad, 1, Uquad_t);
991 s += sizeof(Uquad_t);
994 if (auquad <= UV_MAX)
995 sv_setuv(sv, (UV)auquad);
997 sv_setnv(sv, (NV)auquad);
998 PUSHs(sv_2mortal(sv));
1003 /* float and double added gnb@melba.bby.oz.au 22/11/89 */
1006 along = (strend - s) / sizeof(float);
1011 Copy(s, &afloat, 1, float);
1020 Copy(s, &afloat, 1, float);
1023 sv_setnv(sv, (NV)afloat);
1024 PUSHs(sv_2mortal(sv));
1030 along = (strend - s) / sizeof(double);
1035 Copy(s, &adouble, 1, double);
1036 s += sizeof(double);
1044 Copy(s, &adouble, 1, double);
1045 s += sizeof(double);
1047 sv_setnv(sv, (NV)adouble);
1048 PUSHs(sv_2mortal(sv));
1054 * Initialise the decode mapping. By using a table driven
1055 * algorithm, the code will be character-set independent
1056 * (and just as fast as doing character arithmetic)
1058 if (PL_uudmap['M'] == 0) {
1061 for (i = 0; i < sizeof(PL_uuemap); i += 1)
1062 PL_uudmap[(U8)PL_uuemap[i]] = i;
1064 * Because ' ' and '`' map to the same value,
1065 * we need to decode them both the same.
1070 along = (strend - s) * 3 / 4;
1071 sv = NEWSV(42, along);
1074 while (s < strend && *s > ' ' && ISUUCHAR(*s)) {
1079 len = PL_uudmap[*(U8*)s++] & 077;
1081 if (s < strend && ISUUCHAR(*s))
1082 a = PL_uudmap[*(U8*)s++] & 077;
1085 if (s < strend && ISUUCHAR(*s))
1086 b = PL_uudmap[*(U8*)s++] & 077;
1089 if (s < strend && ISUUCHAR(*s))
1090 c = PL_uudmap[*(U8*)s++] & 077;
1093 if (s < strend && ISUUCHAR(*s))
1094 d = PL_uudmap[*(U8*)s++] & 077;
1097 hunk[0] = (a << 2) | (b >> 4);
1098 hunk[1] = (b << 4) | (c >> 2);
1099 hunk[2] = (c << 6) | d;
1100 sv_catpvn(sv, hunk, (len > 3) ? 3 : len);
1105 else if (s[1] == '\n') /* possible checksum byte */
1108 XPUSHs(sv_2mortal(sv));
1113 if (strchr("fFdD", datumtype) ||
1114 (checksum > bits_in_uv && strchr("csSiIlLnNUvVqQ", datumtype)) ) {
1117 adouble = (NV) (1 << (checksum & 15));
1118 while (checksum >= 16) {
1122 while (cdouble < 0.0)
1124 cdouble = Perl_modf(cdouble / adouble, &trouble) * adouble;
1125 sv_setnv(sv, cdouble);
1128 if (checksum < bits_in_uv) {
1129 UV mask = ((UV)1 << checksum) - 1;
1132 sv_setuv(sv, (UV)culong);
1134 XPUSHs(sv_2mortal(sv));
1137 if (gimme != G_ARRAY &&
1138 SP - PL_stack_base == start_sp_offset + 1) {
1139 /* do first one only unless in list context
1140 / is implmented by unpacking the count, then poping it from the
1141 stack, so must check that we're not in the middle of a / */
1142 if ((pat >= patend) || *pat != '/')
1146 if (SP - PL_stack_base == start_sp_offset && gimme == G_SCALAR)
1147 PUSHs(&PL_sv_undef);
1152 S_doencodes(pTHX_ register SV *sv, register char *s, register I32 len)
1156 *hunk = PL_uuemap[len];
1157 sv_catpvn(sv, hunk, 1);
1160 hunk[0] = PL_uuemap[(077 & (*s >> 2))];
1161 hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((s[1] >> 4) & 017)))];
1162 hunk[2] = PL_uuemap[(077 & (((s[1] << 2) & 074) | ((s[2] >> 6) & 03)))];
1163 hunk[3] = PL_uuemap[(077 & (s[2] & 077))];
1164 sv_catpvn(sv, hunk, 4);
1169 char r = (len > 1 ? s[1] : '\0');
1170 hunk[0] = PL_uuemap[(077 & (*s >> 2))];
1171 hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((r >> 4) & 017)))];
1172 hunk[2] = PL_uuemap[(077 & ((r << 2) & 074))];
1173 hunk[3] = PL_uuemap[0];
1174 sv_catpvn(sv, hunk, 4);
1176 sv_catpvn(sv, "\n", 1);
1180 S_is_an_int(pTHX_ char *s, STRLEN l)
1183 SV *result = newSVpvn(s, l);
1184 char *result_c = SvPV(result, n_a); /* convenience */
1185 char *out = result_c;
1195 SvREFCNT_dec(result);
1218 SvREFCNT_dec(result);
1224 SvCUR_set(result, out - result_c);
1228 /* pnum must be '\0' terminated */
1230 S_div128(pTHX_ SV *pnum, bool *done)
1233 char *s = SvPV(pnum, len);
1242 i = m * 10 + (*t - '0');
1244 r = (i >> 7); /* r < 10 */
1251 SvCUR_set(pnum, (STRLEN) (t - s));
1258 dSP; dMARK; dORIGMARK; dTARGET;
1259 register SV *cat = TARG;
1262 register char *pat = SvPVx(*++MARK, fromlen);
1264 register char *patend = pat + fromlen;
1269 static char null10[] = {0,0,0,0,0,0,0,0,0,0};
1270 static char *space10 = " ";
1272 /* These must not be in registers: */
1287 #ifdef PERL_NATINT_PACK
1288 int natint; /* native integer */
1293 sv_setpvn(cat, "", 0);
1295 while (pat < patend) {
1296 SV *lengthcode = Nullsv;
1297 #define NEXTFROM ( lengthcode ? lengthcode : items-- > 0 ? *MARK++ : &PL_sv_no)
1298 datumtype = *pat++ & 0xFF;
1299 #ifdef PERL_NATINT_PACK
1302 if (isSPACE(datumtype)) {
1306 #ifndef PACKED_IS_OCTETS
1307 if (datumtype == 'U' && pat == patcopy+1)
1310 if (datumtype == '#') {
1311 while (pat < patend && *pat != '\n')
1316 char *natstr = "sSiIlL";
1318 if (strchr(natstr, datumtype)) {
1319 #ifdef PERL_NATINT_PACK
1325 DIE(aTHX_ "'!' allowed only after types %s", natstr);
1328 len = strchr("@Xxu", datumtype) ? 0 : items;
1331 else if (isDIGIT(*pat)) {
1333 while (isDIGIT(*pat)) {
1334 len = (len * 10) + (*pat++ - '0');
1336 DIE(aTHX_ "Repeat count in pack overflows");
1343 if ((*pat != 'a' && *pat != 'A' && *pat != 'Z') || pat[1] != '*')
1344 DIE(aTHX_ "/ must be followed by a*, A* or Z*");
1345 lengthcode = sv_2mortal(newSViv(sv_len(items > 0
1346 ? *MARK : &PL_sv_no)
1347 + (*pat == 'Z' ? 1 : 0)));
1351 DIE(aTHX_ "Invalid type in pack: '%c'", (int)datumtype);
1352 case ',': /* grandfather in commas but with a warning */
1353 if (commas++ == 0 && ckWARN(WARN_PACK))
1354 Perl_warner(aTHX_ WARN_PACK,
1355 "Invalid type in pack: '%c'", (int)datumtype);
1358 DIE(aTHX_ "%% may only be used in unpack");
1369 if (SvCUR(cat) < len)
1370 DIE(aTHX_ "X outside of string");
1377 sv_catpvn(cat, null10, 10);
1380 sv_catpvn(cat, null10, len);
1386 aptr = SvPV(fromstr, fromlen);
1387 if (pat[-1] == '*') {
1389 if (datumtype == 'Z')
1392 if (fromlen >= len) {
1393 sv_catpvn(cat, aptr, len);
1394 if (datumtype == 'Z')
1395 *(SvEND(cat)-1) = '\0';
1398 sv_catpvn(cat, aptr, fromlen);
1400 if (datumtype == 'A') {
1402 sv_catpvn(cat, space10, 10);
1405 sv_catpvn(cat, space10, len);
1409 sv_catpvn(cat, null10, 10);
1412 sv_catpvn(cat, null10, len);
1424 str = SvPV(fromstr, fromlen);
1428 SvCUR(cat) += (len+7)/8;
1429 SvGROW(cat, SvCUR(cat) + 1);
1430 aptr = SvPVX(cat) + aint;
1435 if (datumtype == 'B') {
1436 for (len = 0; len++ < aint;) {
1437 items |= *str++ & 1;
1441 *aptr++ = items & 0xff;
1447 for (len = 0; len++ < aint;) {
1453 *aptr++ = items & 0xff;
1459 if (datumtype == 'B')
1460 items <<= 7 - (aint & 7);
1462 items >>= 7 - (aint & 7);
1463 *aptr++ = items & 0xff;
1465 str = SvPVX(cat) + SvCUR(cat);
1480 str = SvPV(fromstr, fromlen);
1484 SvCUR(cat) += (len+1)/2;
1485 SvGROW(cat, SvCUR(cat) + 1);
1486 aptr = SvPVX(cat) + aint;
1491 if (datumtype == 'H') {
1492 for (len = 0; len++ < aint;) {
1494 items |= ((*str++ & 15) + 9) & 15;
1496 items |= *str++ & 15;
1500 *aptr++ = items & 0xff;
1506 for (len = 0; len++ < aint;) {
1508 items |= (((*str++ & 15) + 9) & 15) << 4;
1510 items |= (*str++ & 15) << 4;
1514 *aptr++ = items & 0xff;
1520 *aptr++ = items & 0xff;
1521 str = SvPVX(cat) + SvCUR(cat);
1532 switch (datumtype) {
1534 aint = SvIV(fromstr);
1535 if ((aint < 0 || aint > 255) &&
1537 Perl_warner(aTHX_ WARN_PACK,
1538 "Character in \"C\" format wrapped");
1540 sv_catpvn(cat, &achar, sizeof(char));
1543 aint = SvIV(fromstr);
1544 if ((aint < -128 || aint > 127) &&
1546 Perl_warner(aTHX_ WARN_PACK,
1547 "Character in \"c\" format wrapped");
1549 sv_catpvn(cat, &achar, sizeof(char));
1557 auint = SvUV(fromstr);
1558 SvGROW(cat, SvCUR(cat) + UTF8_MAXLEN + 1);
1559 SvCUR_set(cat, (char*)uvchr_to_utf8((U8*)SvEND(cat),auint)
1564 /* Float and double added by gnb@melba.bby.oz.au 22/11/89 */
1569 afloat = (float)SvNV(fromstr);
1570 sv_catpvn(cat, (char *)&afloat, sizeof (float));
1577 adouble = (double)SvNV(fromstr);
1578 sv_catpvn(cat, (char *)&adouble, sizeof (double));
1584 ashort = (I16)SvIV(fromstr);
1586 ashort = PerlSock_htons(ashort);
1588 CAT16(cat, &ashort);
1594 ashort = (I16)SvIV(fromstr);
1596 ashort = htovs(ashort);
1598 CAT16(cat, &ashort);
1602 #if SHORTSIZE != SIZE16
1604 unsigned short aushort;
1608 aushort = SvUV(fromstr);
1609 sv_catpvn(cat, (char *)&aushort, sizeof(unsigned short));
1619 aushort = (U16)SvUV(fromstr);
1620 CAT16(cat, &aushort);
1626 #if SHORTSIZE != SIZE16
1632 ashort = SvIV(fromstr);
1633 sv_catpvn(cat, (char *)&ashort, sizeof(short));
1641 ashort = (I16)SvIV(fromstr);
1642 CAT16(cat, &ashort);
1649 auint = SvUV(fromstr);
1650 sv_catpvn(cat, (char*)&auint, sizeof(unsigned int));
1656 adouble = Perl_floor(SvNV(fromstr));
1659 DIE(aTHX_ "Cannot compress negative numbers");
1662 #if UVSIZE > 4 && UVSIZE >= NVSIZE
1663 adouble <= 0xffffffff
1665 # ifdef CXUX_BROKEN_CONSTANT_CONVERT
1666 adouble <= UV_MAX_cxux
1673 char buf[1 + sizeof(UV)];
1674 char *in = buf + sizeof(buf);
1675 UV auv = U_V(adouble);
1678 *--in = (auv & 0x7f) | 0x80;
1681 buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */
1682 sv_catpvn(cat, in, (buf + sizeof(buf)) - in);
1684 else if (SvPOKp(fromstr)) { /* decimal string arithmetics */
1685 char *from, *result, *in;
1690 /* Copy string and check for compliance */
1691 from = SvPV(fromstr, len);
1692 if ((norm = is_an_int(from, len)) == NULL)
1693 DIE(aTHX_ "can compress only unsigned integer");
1695 New('w', result, len, char);
1699 *--in = div128(norm, &done) | 0x80;
1700 result[len - 1] &= 0x7F; /* clear continue bit */
1701 sv_catpvn(cat, in, (result + len) - in);
1703 SvREFCNT_dec(norm); /* free norm */
1705 else if (SvNOKp(fromstr)) {
1706 char buf[sizeof(double) * 2]; /* 8/7 <= 2 */
1707 char *in = buf + sizeof(buf);
1710 double next = floor(adouble / 128);
1711 *--in = (unsigned char)(adouble - (next * 128)) | 0x80;
1712 if (in <= buf) /* this cannot happen ;-) */
1713 DIE(aTHX_ "Cannot compress integer");
1715 } while (adouble > 0);
1716 buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */
1717 sv_catpvn(cat, in, (buf + sizeof(buf)) - in);
1720 DIE(aTHX_ "Cannot compress non integer");
1726 aint = SvIV(fromstr);
1727 sv_catpvn(cat, (char*)&aint, sizeof(int));
1733 aulong = SvUV(fromstr);
1735 aulong = PerlSock_htonl(aulong);
1737 CAT32(cat, &aulong);
1743 aulong = SvUV(fromstr);
1745 aulong = htovl(aulong);
1747 CAT32(cat, &aulong);
1751 #if LONGSIZE != SIZE32
1753 unsigned long aulong;
1757 aulong = SvUV(fromstr);
1758 sv_catpvn(cat, (char *)&aulong, sizeof(unsigned long));
1766 aulong = SvUV(fromstr);
1767 CAT32(cat, &aulong);
1772 #if LONGSIZE != SIZE32
1778 along = SvIV(fromstr);
1779 sv_catpvn(cat, (char *)&along, sizeof(long));
1787 along = SvIV(fromstr);
1796 auquad = (Uquad_t)SvUV(fromstr);
1797 sv_catpvn(cat, (char*)&auquad, sizeof(Uquad_t));
1803 aquad = (Quad_t)SvIV(fromstr);
1804 sv_catpvn(cat, (char*)&aquad, sizeof(Quad_t));
1809 len = 1; /* assume SV is correct length */
1814 if (fromstr == &PL_sv_undef)
1818 /* XXX better yet, could spirit away the string to
1819 * a safe spot and hang on to it until the result
1820 * of pack() (and all copies of the result) are
1823 if (ckWARN(WARN_PACK) && (SvTEMP(fromstr)
1824 || (SvPADTMP(fromstr)
1825 && !SvREADONLY(fromstr))))
1827 Perl_warner(aTHX_ WARN_PACK,
1828 "Attempt to pack pointer to temporary value");
1830 if (SvPOK(fromstr) || SvNIOK(fromstr))
1831 aptr = SvPV(fromstr,n_a);
1833 aptr = SvPV_force(fromstr,n_a);
1835 sv_catpvn(cat, (char*)&aptr, sizeof(char*));
1840 aptr = SvPV(fromstr, fromlen);
1841 SvGROW(cat, fromlen * 4 / 3);
1846 while (fromlen > 0) {
1853 doencodes(cat, aptr, todo);