/* pp_pack.c
*
- * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
+ * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+ * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
* wooden spoon, a short two-pronged fork and some skewers were stowed; and
* hidden at the bottom of the pack in a flat wooden box a dwindling treasure,
* some salt.
+ *
+ * [p.653 of _The Lord of the Rings_, IV/iv: "Of Herbs and Stewed Rabbit"]
*/
/* This file contains pp ("push/pop") functions that
* other pp*.c files for the rest of the pp_ functions.
*/
-
#include "EXTERN.h"
#define PERL_IN_PP_PACK_C
#include "perl.h"
(symptr)->grpend = NULL; \
(symptr)->code = 0; \
(symptr)->length = 0; \
- (symptr)->howlen = 0; \
+ (symptr)->howlen = e_no_len; \
(symptr)->level = 0; \
(symptr)->flags = (f); \
(symptr)->strbeg = 0; \
(symptr)->previous = NULL; \
} STMT_END
+typedef union {
+ NV nv;
+ U8 bytes[sizeof(NV)];
+} NV_bytes;
+
+#if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE)
+typedef union {
+ long double ld;
+ U8 bytes[sizeof(long double)];
+} ld_bytes;
+#endif
+
#if PERL_VERSION >= 9
# define PERL_PACK_CAN_BYTEORDER
# define PERL_PACK_CAN_SHRIEKSIGN
#define PUSH32(utf8, cur, p) PUSH_BYTES(utf8, cur, OFF32(p), SIZE32)
/* Only to be used inside a loop (see the break) */
-#define SHIFT_VAR(utf8, s, strend, var, datumtype) \
+#define SHIFT_BYTES(utf8, s, strend, buf, len, datumtype) \
STMT_START { \
if (utf8) { \
if (!uni_to_bytes(aTHX_ &s, strend, \
- (char *) &var, sizeof(var), datumtype)) break;\
+ (char *) (buf), len, datumtype)) break; \
} else { \
- Copy(s, (char *) &var, sizeof(var), char); \
- s += sizeof(var); \
+ Copy(s, (char *) (buf), len, char); \
+ s += len; \
} \
} STMT_END
+#define SHIFT_VAR(utf8, s, strend, var, datumtype) \
+ SHIFT_BYTES(utf8, s, strend, &(var), sizeof(var), datumtype)
+
#define PUSH_VAR(utf8, aptr, var) \
PUSH_BYTES(utf8, aptr, &(var), sizeof(var))
char *s = SvPV(sv, len);
char *t;
+ PERL_ARGS_ASSERT_MUL128;
+
if (!strnEQ(s, "0000", 4)) { /* need to grow sv */
SV * const tmpNew = newSVpvs("0000000000");
# define DO_BO_UNPACK_PC(var) DO_BO_UNPACK_PTR(var, i, int, char)
# define DO_BO_PACK_PC(var) DO_BO_PACK_PTR(var, i, int, char)
# elif PTRSIZE == LONGSIZE
-# define DO_BO_UNPACK_P(var) DO_BO_UNPACK_PTR(var, l, long, void)
-# define DO_BO_PACK_P(var) DO_BO_PACK_PTR(var, l, long, void)
-# define DO_BO_UNPACK_PC(var) DO_BO_UNPACK_PTR(var, l, long, char)
-# define DO_BO_PACK_PC(var) DO_BO_PACK_PTR(var, l, long, char)
+# if LONGSIZE < IVSIZE && IVSIZE == 8
+# define DO_BO_UNPACK_P(var) DO_BO_UNPACK_PTR(var, 64, IV, void)
+# define DO_BO_PACK_P(var) DO_BO_PACK_PTR(var, 64, IV, void)
+# define DO_BO_UNPACK_PC(var) DO_BO_UNPACK_PTR(var, 64, IV, char)
+# define DO_BO_PACK_PC(var) DO_BO_PACK_PTR(var, 64, IV, char)
+# else
+# define DO_BO_UNPACK_P(var) DO_BO_UNPACK_PTR(var, l, IV, void)
+# define DO_BO_PACK_P(var) DO_BO_PACK_PTR(var, l, IV, void)
+# define DO_BO_UNPACK_PC(var) DO_BO_UNPACK_PTR(var, l, IV, char)
+# define DO_BO_PACK_PC(var) DO_BO_PACK_PTR(var, l, IV, char)
+# endif
# elif PTRSIZE == IVSIZE
# define DO_BO_UNPACK_P(var) DO_BO_UNPACK_PTR(var, l, IV, void)
# define DO_BO_PACK_P(var) DO_BO_PACK_PTR(var, l, IV, void)
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0,
- /* C */ sizeof(unsigned char) | PACK_SIZE_UNPREDICTABLE,
+ /* C */ sizeof(unsigned char),
#if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE)
/* D */ LONG_DOUBLESIZE,
#else
/* w */ sizeof(char) | PACK_SIZE_UNPREDICTABLE | PACK_SIZE_CANNOT_CSUM,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- /* C */ sizeof(unsigned char) | PACK_SIZE_UNPREDICTABLE,
+ /* C */ sizeof(unsigned char),
#if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE)
/* D */ LONG_DOUBLESIZE,
#else
STRLEN retlen;
UV val = utf8n_to_uvchr((U8 *) *s, end-*s, &retlen,
ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY);
- /* We try to process malformed UTF-8 as much as possible (preferrably with
+ /* We try to process malformed UTF-8 as much as possible (preferably with
warnings), but these two mean we make no progress in the string and
might enter an infinite loop */
if (retlen == (STRLEN) -1 || retlen == 0)
Perl_croak(aTHX_ "Malformed UTF-8 string in '%c' format in unpack",
(int) TYPE_NO_MODIFIERS(datumtype));
if (val >= 0x100) {
- if (ckWARN(WARN_UNPACK))
- Perl_warner(aTHX_ packWARN(WARN_UNPACK),
- "Character in '%c' format wrapped in unpack",
- (int) TYPE_NO_MODIFIERS(datumtype));
+ Perl_ck_warner(aTHX_ packWARN(WARN_UNPACK),
+ "Character in '%c' format wrapped in unpack",
+ (int) TYPE_NO_MODIFIERS(datumtype));
val &= 0xff;
}
*s += retlen;
}
if (from > end) from = end;
}
- if ((bad & 2) && ckWARN(WARN_UNPACK))
- Perl_warner(aTHX_ packWARN(datumtype & TYPE_IS_PACK ?
+ if ((bad & 2))
+ Perl_ck_warner(aTHX_ packWARN(datumtype & TYPE_IS_PACK ?
WARN_PACK : WARN_UNPACK),
- "Character(s) in '%c' format wrapped in %s",
- (int) TYPE_NO_MODIFIERS(datumtype),
- datumtype & TYPE_IS_PACK ? "pack" : "unpack");
+ "Character(s) in '%c' format wrapped in %s",
+ (int) TYPE_NO_MODIFIERS(datumtype),
+ datumtype & TYPE_IS_PACK ? "pack" : "unpack");
}
*s = from;
return TRUE;
STATIC bool
next_uni_uu(pTHX_ const char **s, const char *end, I32 *out)
{
+ dVAR;
STRLEN retlen;
const UV val = utf8n_to_uvchr((U8 *) *s, end-*s, &retlen, UTF8_CHECK_ONLY);
if (val >= 0x100 || !ISUUCHAR(val) ||
return TRUE;
}
-STATIC void
-bytes_to_uni(pTHX_ const U8 *start, STRLEN len, char **dest) {
- U8 buffer[UTF8_MAXLEN];
+STATIC char *
+S_bytes_to_uni(const U8 *start, STRLEN len, char *dest) {
const U8 * const end = start + len;
- char *d = *dest;
+
+ PERL_ARGS_ASSERT_BYTES_TO_UNI;
+
while (start < end) {
- const int length =
- uvuni_to_utf8_flags(buffer, NATIVE_TO_UNI(*start), 0) - buffer;
- switch(length) {
- case 1:
- *d++ = buffer[0];
- break;
- case 2:
- *d++ = buffer[0];
- *d++ = buffer[1];
- break;
- default:
- Perl_croak(aTHX_ "Perl bug: value %d UTF-8 expands to %d bytes",
- *start, length);
+ const UV uv = NATIVE_TO_ASCII(*start);
+ if (UNI_IS_INVARIANT(uv))
+ *dest++ = (char)(U8)UTF_TO_NATIVE(uv);
+ else {
+ *dest++ = (char)(U8)UTF8_EIGHT_BIT_HI(uv);
+ *dest++ = (char)(U8)UTF8_EIGHT_BIT_LO(uv);
}
start++;
}
- *dest = d;
+ return dest;
}
#define PUSH_BYTES(utf8, cur, buf, len) \
STMT_START { \
- if (utf8) bytes_to_uni(aTHX_ (U8 *) buf, len, &(cur)); \
+ if (utf8) \
+ (cur) = bytes_to_uni((U8 *) buf, len, (cur)); \
else { \
Copy(buf, cur, len, char); \
(cur) += (len); \
STMT_START { \
if (utf8) { \
const U8 au8 = (byte); \
- bytes_to_uni(aTHX_ &au8, 1, &(s)); \
+ (s) = bytes_to_uni(&au8, 1, (s)); \
} else *(U8 *)(s)++ = (byte); \
} STMT_END
static const char *_action( const tempsym_t* symptr )
{
- return ( symptr->flags & FLAG_PACK ) ? "pack" : "unpack";
+ return (const char *)(( symptr->flags & FLAG_PACK ) ? "pack" : "unpack");
}
/* Returns the sizeof() struct described by pat */
{
I32 total = 0;
+ PERL_ARGS_ASSERT_MEASURE_STRUCT;
+
while (next_symbol(symptr)) {
I32 len;
int size;
STATIC const char *
S_group_end(pTHX_ register const char *patptr, register const char *patend, char ender)
{
+ PERL_ARGS_ASSERT_GROUP_END;
+
while (patptr < patend) {
const char c = *patptr++;
S_get_num(pTHX_ register const char *patptr, I32 *lenptr )
{
I32 len = *patptr++ - '0';
+
+ PERL_ARGS_ASSERT_GET_NUM;
+
while (isDIGIT(*patptr)) {
if (len >= 0x7FFFFFFF/10)
Perl_croak(aTHX_ "pack/unpack repeat count overflow");
const char* patptr = symptr->patptr;
const char* const patend = symptr->patend;
+ PERL_ARGS_ASSERT_NEXT_SYMBOL;
+
symptr->flags &= ~FLAG_SLASH;
while (patptr < patend) {
Perl_croak(aTHX_ "Can't use '%c' in a group with different byte-order in %s",
*patptr, _action( symptr ) );
- if ((code & modifier) && ckWARN(WARN_UNPACK)) {
- Perl_warner(aTHX_ packWARN(WARN_UNPACK),
- "Duplicate modifier '%c' after '%c' in %s",
- *patptr, (int) TYPE_NO_MODIFIERS(code),
- _action( symptr ) );
+ if ((code & modifier)) {
+ Perl_ck_warner(aTHX_ packWARN(WARN_UNPACK),
+ "Duplicate modifier '%c' after '%c' in %s",
+ *patptr, (int) TYPE_NO_MODIFIERS(code),
+ _action( symptr ) );
}
code |= modifier;
need_utf8(const char *pat, const char *patend)
{
bool first = TRUE;
+
+ PERL_ARGS_ASSERT_NEED_UTF8;
+
while (pat < patend) {
if (pat[0] == '#') {
pat++;
STATIC char
first_symbol(const char *pat, const char *patend) {
+ PERL_ARGS_ASSERT_FIRST_SYMBOL;
+
while (pat < patend) {
if (pat[0] != '#') return pat[0];
pat++;
}
/*
-=for apidoc unpack_str
-
-The engine implementing unpack() Perl function. Note: parameters strbeg, new_s
-and ocnt are not used. This call should not be used, use unpackstring instead.
-
-=cut */
-
-I32
-Perl_unpack_str(pTHX_ const char *pat, const char *patend, const char *s, const char *strbeg, const char *strend, char **new_s, I32 ocnt, U32 flags)
-{
- tempsym_t sym;
- PERL_UNUSED_ARG(strbeg);
- PERL_UNUSED_ARG(new_s);
- PERL_UNUSED_ARG(ocnt);
-
- if (flags & FLAG_DO_UTF8) flags |= FLAG_WAS_UTF8;
- else if (need_utf8(pat, patend)) {
- /* We probably should try to avoid this in case a scalar context call
- wouldn't get to the "U0" */
- STRLEN len = strend - s;
- s = (char *) bytes_to_utf8((U8 *) s, &len);
- SAVEFREEPV(s);
- strend = s + len;
- flags |= FLAG_DO_UTF8;
- }
-
- if (first_symbol(pat, patend) != 'U' && (flags & FLAG_DO_UTF8))
- flags |= FLAG_PARSE_UTF8;
-
- TEMPSYM_INIT(&sym, pat, patend, flags);
-
- return unpack_rec(&sym, s, s, strend, NULL );
-}
-
-/*
=for apidoc unpackstring
The engine implementing unpack() Perl function. C<unpackstring> puts the
{
tempsym_t sym;
+ PERL_ARGS_ASSERT_UNPACKSTRING;
+
if (flags & FLAG_DO_UTF8) flags |= FLAG_WAS_UTF8;
else if (need_utf8(pat, patend)) {
/* We probably should try to avoid this in case a scalar context call
return unpack_rec(&sym, s, s, strend, NULL );
}
-STATIC
-I32
+STATIC I32
S_unpack_rec(pTHX_ tempsym_t* symptr, const char *s, const char *strbeg, const char *strend, const char **new_s )
{
dVAR; dSP;
- SV *sv;
+ SV *sv = NULL;
const I32 start_sp_offset = SP - PL_stack_base;
howlen_t howlen;
-
I32 checksum = 0;
UV cuv = 0;
NV cdouble = 0.0;
bool explicit_length;
const bool unpack_only_one = (symptr->flags & FLAG_UNPACK_ONLY_ONE) != 0;
bool utf8 = (symptr->flags & FLAG_PARSE_UTF8) ? 1 : 0;
+
+ PERL_ARGS_ASSERT_UNPACK_REC;
+
symptr->strbeg = s - strbeg;
while (next_symbol(symptr)) {
symptr->previous = &savsym;
symptr->level++;
PUTBACK;
+ if (len && unpack_only_one) len = 1;
while (len--) {
symptr->patptr = savsym.grpbeg;
if (utf8) symptr->flags |= FLAG_PARSE_UTF8;
sv = from <= s ?
newSVuv( u8 ? (UV) utf8_length((const U8*)from, (const U8*)s) : (UV) (s-from)) :
newSViv(-(u8 ? (IV) utf8_length((const U8*)s, (const U8*)from) : (IV) (from-s)));
- XPUSHs(sv_2mortal(sv));
+ mXPUSHs(sv);
break;
}
#ifdef PERL_PACK_CAN_SHRIEKSIGN
if (!(symptr->flags & FLAG_WAS_UTF8))
sv_utf8_downgrade(sv, 0);
}
- XPUSHs(sv_2mortal(sv));
+ mXPUSHs(sv);
s += len;
break;
case 'B':
if (howlen == e_star || len > (strend - s) * 8)
len = (strend - s) * 8;
if (checksum) {
- if (!PL_bitcount) {
- int bits;
- Newxz(PL_bitcount, 256, char);
- for (bits = 1; bits < 256; bits++) {
- if (bits & 1) PL_bitcount[bits]++;
- if (bits & 2) PL_bitcount[bits]++;
- if (bits & 4) PL_bitcount[bits]++;
- if (bits & 8) PL_bitcount[bits]++;
- if (bits & 16) PL_bitcount[bits]++;
- if (bits & 32) PL_bitcount[bits]++;
- if (bits & 64) PL_bitcount[bits]++;
- if (bits & 128) PL_bitcount[bits]++;
- }
- }
if (utf8)
while (len >= 8 && s < strend) {
cuv += PL_bitcount[uni_to_byte(aTHX_ &s, strend, datumtype)];
break;
}
- sv = sv_2mortal(NEWSV(35, len ? len : 1));
+ sv = sv_2mortal(newSV(len ? len : 1));
SvPOK_on(sv);
str = SvPVX(sv);
if (datumtype == 'b') {
}
case 'H':
case 'h': {
- char *str;
+ char *str = NULL;
/* Preliminary length estimate, acceptable for utf8 too */
if (howlen == e_star || len > (strend - s) * 2)
len = (strend - s) * 2;
- sv = sv_2mortal(NEWSV(35, len ? len : 1));
- SvPOK_on(sv);
- str = SvPVX(sv);
+ if (!checksum) {
+ sv = sv_2mortal(newSV(len ? len : 1));
+ SvPOK_on(sv);
+ str = SvPVX(sv);
+ }
if (datumtype == 'h') {
U8 bits = 0;
I32 ai32 = len;
if (s >= strend) break;
bits = uni_to_byte(aTHX_ &s, strend, datumtype);
} else bits = * (U8 *) s++;
- *str++ = PL_hexdigit[bits & 15];
+ if (!checksum)
+ *str++ = PL_hexdigit[bits & 15];
}
} else {
U8 bits = 0;
if (s >= strend) break;
bits = uni_to_byte(aTHX_ &s, strend, datumtype);
} else bits = *(U8 *) s++;
- *str++ = PL_hexdigit[(bits >> 4) & 15];
+ if (!checksum)
+ *str++ = PL_hexdigit[(bits >> 4) & 15];
}
}
- *str = '\0';
- SvCUR_set(sv, str - SvPVX_const(sv));
- XPUSHs(sv);
+ if (!checksum) {
+ *str = '\0';
+ SvCUR_set(sv, str - SvPVX_const(sv));
+ XPUSHs(sv);
+ }
break;
}
+ case 'C':
+ if (len == 0) {
+ if (explicit_length)
+ /* Switch to "character" mode */
+ utf8 = (symptr->flags & FLAG_DO_UTF8) ? 1 : 0;
+ break;
+ }
+ /* FALL THROUGH */
case 'c':
- while (len-- > 0) {
- int aint = SHIFT_BYTE(utf8, s, strend, datumtype);
- if (aint >= 128) /* fake up signed chars */
+ while (len-- > 0 && s < strend) {
+ int aint;
+ if (utf8)
+ {
+ STRLEN retlen;
+ aint = utf8n_to_uvchr((U8 *) s, strend-s, &retlen,
+ ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY);
+ if (retlen == (STRLEN) -1 || retlen == 0)
+ Perl_croak(aTHX_ "Malformed UTF-8 string in unpack");
+ s += retlen;
+ }
+ else
+ aint = *(U8 *)(s)++;
+ if (aint >= 128 && datumtype != 'C') /* fake up signed chars */
aint -= 256;
if (!checksum)
- PUSHs(sv_2mortal(newSViv((IV)aint)));
+ mPUSHi(aint);
else if (checksum > bits_in_uv)
cdouble += (NV)aint;
else
cuv += aint;
}
break;
- case 'C':
case 'W':
W_checksum:
- if (len == 0) {
- if (explicit_length && datumtype == 'C')
- /* Switch to "character" mode */
- utf8 = (symptr->flags & FLAG_DO_UTF8) ? 1 : 0;
- break;
- }
- if (datumtype == 'C' ?
- (symptr->flags & FLAG_DO_UTF8) &&
- !(symptr->flags & FLAG_WAS_UTF8) : utf8) {
+ if (utf8) {
while (len-- > 0 && s < strend) {
STRLEN retlen;
const UV val = utf8n_to_uvchr((U8 *) s, strend-s, &retlen,
Perl_croak(aTHX_ "Malformed UTF-8 string in unpack");
s += retlen;
if (!checksum)
- PUSHs(sv_2mortal(newSVuv((UV) val)));
+ mPUSHu(val);
else if (checksum > bits_in_uv)
cdouble += (NV) val;
else
} else if (!checksum)
while (len-- > 0) {
const U8 ch = *(U8 *) s++;
- PUSHs(sv_2mortal(newSVuv((UV) ch)));
+ mPUSHu(ch);
}
else if (checksum > bits_in_uv)
while (len-- > 0) cdouble += (NV) *(U8 *) s++;
break;
case 'U':
if (len == 0) {
- if (explicit_length) {
+ if (explicit_length && howlen != e_star) {
/* Switch to "bytes in UTF-8" mode */
if (symptr->flags & FLAG_DO_UTF8) utf8 = 0;
else
s += retlen;
}
if (!checksum)
- PUSHs(sv_2mortal(newSVuv((UV) auv)));
+ mPUSHu(auv);
else if (checksum > bits_in_uv)
cdouble += (NV) auv;
else
SHIFT_VAR(utf8, s, strend, ashort, datumtype);
DO_BO_UNPACK(ashort, s);
if (!checksum)
- PUSHs(sv_2mortal(newSViv((IV)ashort)));
+ mPUSHi(ashort);
else if (checksum > bits_in_uv)
cdouble += (NV)ashort;
else
ai16 -= 65536;
#endif
if (!checksum)
- PUSHs(sv_2mortal(newSViv((IV)ai16)));
+ mPUSHi(ai16);
else if (checksum > bits_in_uv)
cdouble += (NV)ai16;
else
SHIFT_VAR(utf8, s, strend, aushort, datumtype);
DO_BO_UNPACK(aushort, s);
if (!checksum)
- PUSHs(sv_2mortal(newSVuv((UV) aushort)));
+ mPUSHu(aushort);
else if (checksum > bits_in_uv)
cdouble += (NV)aushort;
else
}
break;
#else
- /* Fallhrough! */
+ /* Fallthrough! */
#endif
case 'v':
case 'n':
au16 = vtohs(au16);
#endif
if (!checksum)
- PUSHs(sv_2mortal(newSVuv((UV)au16)));
+ mPUSHu(au16);
else if (checksum > bits_in_uv)
cdouble += (NV) au16;
else
ai16 = (I16) vtohs((U16) ai16);
# endif /* HAS_VTOHS */
if (!checksum)
- PUSHs(sv_2mortal(newSViv((IV)ai16)));
+ mPUSHi(ai16);
else if (checksum > bits_in_uv)
cdouble += (NV) ai16;
else
SHIFT_VAR(utf8, s, strend, aint, datumtype);
DO_BO_UNPACK(aint, i);
if (!checksum)
- PUSHs(sv_2mortal(newSViv((IV)aint)));
+ mPUSHi(aint);
else if (checksum > bits_in_uv)
cdouble += (NV)aint;
else
SHIFT_VAR(utf8, s, strend, auint, datumtype);
DO_BO_UNPACK(auint, i);
if (!checksum)
- PUSHs(sv_2mortal(newSVuv((UV)auint)));
+ mPUSHu(auint);
else if (checksum > bits_in_uv)
cdouble += (NV)auint;
else
Perl_croak(aTHX_ "'j' not supported on this platform");
#endif
if (!checksum)
- PUSHs(sv_2mortal(newSViv(aiv)));
+ mPUSHi(aiv);
else if (checksum > bits_in_uv)
cdouble += (NV)aiv;
else
Perl_croak(aTHX_ "'J' not supported on this platform");
#endif
if (!checksum)
- PUSHs(sv_2mortal(newSVuv(auv)));
+ mPUSHu(auv);
else if (checksum > bits_in_uv)
cdouble += (NV)auv;
else
SHIFT_VAR(utf8, s, strend, along, datumtype);
DO_BO_UNPACK(along, l);
if (!checksum)
- PUSHs(sv_2mortal(newSViv((IV)along)));
+ mPUSHi(along);
else if (checksum > bits_in_uv)
cdouble += (NV)along;
else
if (ai32 > 2147483647) ai32 -= 4294967296;
#endif
if (!checksum)
- PUSHs(sv_2mortal(newSViv((IV)ai32)));
+ mPUSHi(ai32);
else if (checksum > bits_in_uv)
cdouble += (NV)ai32;
else
SHIFT_VAR(utf8, s, strend, aulong, datumtype);
DO_BO_UNPACK(aulong, l);
if (!checksum)
- PUSHs(sv_2mortal(newSVuv((UV)aulong)));
+ mPUSHu(aulong);
else if (checksum > bits_in_uv)
cdouble += (NV)aulong;
else
au32 = vtohl(au32);
#endif
if (!checksum)
- PUSHs(sv_2mortal(newSVuv((UV)au32)));
+ mPUSHu(au32);
else if (checksum > bits_in_uv)
cdouble += (NV)au32;
else
ai32 = (I32)vtohl((U32)ai32);
# endif
if (!checksum)
- PUSHs(sv_2mortal(newSViv((IV)ai32)));
+ mPUSHi(ai32);
else if (checksum > bits_in_uv)
cdouble += (NV)ai32;
else
SHIFT_VAR(utf8, s, strend, aptr, datumtype);
DO_BO_UNPACK_PC(aptr);
/* newSVpv generates undef if aptr is NULL */
- PUSHs(sv_2mortal(newSVpv(aptr, 0)));
+ mPUSHs(newSVpv(aptr, 0));
}
break;
case 'w':
/* UTF8_IS_XXXXX not right here - using constant 0x80 */
if (ch < 0x80) {
bytes = 0;
- PUSHs(sv_2mortal(newSVuv(auv)));
+ mPUSHu(auv);
len--;
auv = 0;
continue;
if (++bytes >= sizeof(UV)) { /* promote to string */
const char *t;
- sv = Perl_newSVpvf(aTHX_ "%.*"UVf, (int)TYPE_DIGITS(UV), auv);
+ sv = Perl_newSVpvf(aTHX_ "%.*"UVuf, (int)TYPE_DIGITS(UV), auv);
while (s < strend) {
ch = SHIFT_BYTE(utf8, s, strend, datumtype);
sv = mul128(sv, (U8)(ch & 0x7f));
while (*t == '0')
t++;
sv_chop(sv, t);
- PUSHs(sv_2mortal(sv));
+ mPUSHs(sv);
len--;
auv = 0;
}
SHIFT_VAR(utf8, s, strend, aptr, datumtype);
DO_BO_UNPACK_PC(aptr);
/* newSVpvn generates undef if aptr is NULL */
- PUSHs(sv_2mortal(newSVpvn(aptr, len)));
+ PUSHs(newSVpvn_flags(aptr, len, SVs_TEMP));
}
break;
#ifdef HAS_QUAD
SHIFT_VAR(utf8, s, strend, aquad, datumtype);
DO_BO_UNPACK(aquad, 64);
if (!checksum)
- PUSHs(sv_2mortal(aquad >= IV_MIN && aquad <= IV_MAX ?
- newSViv((IV)aquad) : newSVnv((NV)aquad)));
+ mPUSHs(aquad >= IV_MIN && aquad <= IV_MAX ?
+ newSViv((IV)aquad) : newSVnv((NV)aquad));
else if (checksum > bits_in_uv)
cdouble += (NV)aquad;
else
SHIFT_VAR(utf8, s, strend, auquad, datumtype);
DO_BO_UNPACK(auquad, 64);
if (!checksum)
- PUSHs(sv_2mortal(auquad <= UV_MAX ?
- newSVuv((UV)auquad):newSVnv((NV)auquad)));
+ mPUSHs(auquad <= UV_MAX ?
+ newSVuv((UV)auquad) : newSVnv((NV)auquad));
else if (checksum > bits_in_uv)
cdouble += (NV)auquad;
else
SHIFT_VAR(utf8, s, strend, afloat, datumtype);
DO_BO_UNPACK_N(afloat, float);
if (!checksum)
- PUSHs(sv_2mortal(newSVnv((NV)afloat)));
+ mPUSHn(afloat);
else
cdouble += afloat;
}
SHIFT_VAR(utf8, s, strend, adouble, datumtype);
DO_BO_UNPACK_N(adouble, double);
if (!checksum)
- PUSHs(sv_2mortal(newSVnv((NV)adouble)));
+ mPUSHn(adouble);
else
cdouble += adouble;
}
break;
case 'F':
while (len-- > 0) {
- NV anv;
- SHIFT_VAR(utf8, s, strend, anv, datumtype);
- DO_BO_UNPACK_N(anv, NV);
+ NV_bytes anv;
+ SHIFT_BYTES(utf8, s, strend, anv.bytes, sizeof(anv.bytes), datumtype);
+ DO_BO_UNPACK_N(anv.nv, NV);
if (!checksum)
- PUSHs(sv_2mortal(newSVnv(anv)));
+ mPUSHn(anv.nv);
else
- cdouble += anv;
+ cdouble += anv.nv;
}
break;
#if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE)
case 'D':
while (len-- > 0) {
- long double aldouble;
- SHIFT_VAR(utf8, s, strend, aldouble, datumtype);
- DO_BO_UNPACK_N(aldouble, long double);
+ ld_bytes aldouble;
+ SHIFT_BYTES(utf8, s, strend, aldouble.bytes, sizeof(aldouble.bytes), datumtype);
+ DO_BO_UNPACK_N(aldouble.ld, long double);
if (!checksum)
- PUSHs(sv_2mortal(newSVnv((NV)aldouble)));
+ mPUSHn(aldouble.ld);
else
- cdouble += aldouble;
+ cdouble += aldouble.ld;
}
break;
#endif
case 'u':
- /* MKS:
- * Initialise the decode mapping. By using a table driven
- * algorithm, the code will be character-set independent
- * (and just as fast as doing character arithmetic)
- */
- if (PL_uudmap['M'] == 0) {
- size_t i;
-
- for (i = 0; i < sizeof(PL_uuemap); ++i)
- PL_uudmap[(U8)PL_uuemap[i]] = i;
- /*
- * Because ' ' and '`' map to the same value,
- * we need to decode them both the same.
- */
- PL_uudmap[' '] = 0;
- }
- {
+ if (!checksum) {
const STRLEN l = (STRLEN) (strend - s) * 3 / 4;
- sv = sv_2mortal(NEWSV(42, l));
+ sv = sv_2mortal(newSV(l));
if (l) SvPOK_on(sv);
}
if (utf8) {
while (next_uni_uu(aTHX_ &s, strend, &len)) {
I32 a, b, c, d;
- char hunk[4];
+ char hunk[3];
- hunk[3] = '\0';
while (len > 0) {
next_uni_uu(aTHX_ &s, strend, &a);
next_uni_uu(aTHX_ &s, strend, &b);
hunk[0] = (char)((a << 2) | (b >> 4));
hunk[1] = (char)((b << 4) | (c >> 2));
hunk[2] = (char)((c << 6) | d);
- sv_catpvn(sv, hunk, (len > 3) ? 3 : len);
+ if (!checksum)
+ sv_catpvn(sv, hunk, (len > 3) ? 3 : len);
len -= 3;
}
if (s < strend) {
} else {
while (s < strend && *s > ' ' && ISUUCHAR(*s)) {
I32 a, b, c, d;
- char hunk[4];
+ char hunk[3];
- hunk[3] = '\0';
len = PL_uudmap[*(U8*)s++] & 077;
while (len > 0) {
if (s < strend && ISUUCHAR(*s))
hunk[0] = (char)((a << 2) | (b >> 4));
hunk[1] = (char)((b << 4) | (c >> 2));
hunk[2] = (char)((c << 6) | d);
- sv_catpvn(sv, hunk, (len > 3) ? 3 : len);
+ if (!checksum)
+ sv_catpvn(sv, hunk, (len > 3) ? 3 : len);
len -= 3;
}
if (*s == '\n')
s += 2;
}
}
- XPUSHs(sv);
+ if (!checksum)
+ XPUSHs(sv);
break;
}
}
sv = newSVuv(cuv);
}
- XPUSHs(sv_2mortal(sv));
+ mXPUSHs(sv);
checksum = 0;
}
PP(pp_unpack)
{
+ dVAR;
dSP;
dPOPPOPssrl;
I32 gimme = GIMME_V;
bool skip = 1;
bool ignore = 0;
+ PERL_ARGS_ASSERT_IS_AN_INT;
+
while (*s) {
switch (*s) {
case ' ':
char *t = s;
int m = 0;
+ PERL_ARGS_ASSERT_DIV128;
+
*done = 1;
while (*t) {
const int i = m * 10 + (*t - '0');
}
/*
-=for apidoc pack_cat
-
-The engine implementing pack() Perl function. Note: parameters next_in_list and
-flags are not used. This call should not be used; use packlist instead.
-
-=cut
-*/
-
-void
-Perl_pack_cat(pTHX_ SV *cat, const char *pat, const char *patend, register SV **beglist, SV **endlist, SV ***next_in_list, U32 flags)
-{
- tempsym_t sym;
- PERL_UNUSED_ARG(next_in_list);
- PERL_UNUSED_ARG(flags);
-
- TEMPSYM_INIT(&sym, pat, patend, FLAG_PACK);
-
- (void)pack_rec( cat, &sym, beglist, endlist );
-}
-
-
-/*
=for apidoc packlist
The engine implementing pack() Perl function.
void
Perl_packlist(pTHX_ SV *cat, const char *pat, const char *patend, register SV **beglist, SV **endlist )
{
- STRLEN no_len;
+ dVAR;
tempsym_t sym;
+ PERL_ARGS_ASSERT_PACKLIST;
+
TEMPSYM_INIT(&sym, pat, patend, FLAG_PACK);
/* We're going to do changes through SvPVX(cat). Make sure it's valid.
Also make sure any UTF8 flag is loaded */
- SvPV_force(cat, no_len);
+ SvPV_force_nolen(cat);
if (DO_UTF8(cat))
sym.flags |= FLAG_PARSE_UTF8 | FLAG_DO_UTF8;
if (m != marks + sym_ptr->level+1) {
Safefree(marks);
Safefree(to_start);
- Perl_croak(aTHX_ "Assertion: marks beyond string end");
+ Perl_croak(aTHX_ "panic: marks beyond string end");
}
for (group=sym_ptr; group; group = group->previous)
group->strbeg = marks[group->level] - to_start;
const STRLEN cur = SvCUR(sv);
const STRLEN len = SvLEN(sv);
STRLEN extend;
+
+ PERL_ARGS_ASSERT_SV_EXP_GROW;
+
if (len - cur > needed) return SvPVX(sv);
extend = needed > len ? needed : len;
return SvGROW(sv, len+extend+1);
SV **
S_pack_rec(pTHX_ SV *cat, tempsym_t* symptr, SV **beglist, SV **endlist )
{
+ dVAR;
tempsym_t lookahead;
I32 items = endlist - beglist;
bool found = next_symbol(symptr);
bool utf8 = (symptr->flags & FLAG_PARSE_UTF8) ? 1 : 0;
bool warn_utf8 = ckWARN(WARN_UTF8);
+ PERL_ARGS_ASSERT_PACK_REC;
+
if (symptr->level == 0 && found && symptr->code == 'U') {
marked_upgrade(aTHX_ cat, symptr);
symptr->flags |= FLAG_DO_UTF8;
SV *fromstr;
STRLEN fromlen;
I32 len;
- SV *lengthcode = Nullsv;
+ SV *lengthcode = NULL;
I32 datumtype = symptr->code;
howlen_t howlen = symptr->howlen;
char *start = SvPVX(cat);
if (strchr("aAZ", lookahead.code)) {
if (lookahead.howlen == e_number) count = lookahead.length;
else {
- if (items > 0)
+ if (items > 0) {
+ if (SvGAMAGIC(*beglist)) {
+ /* Avoid reading the active data more than once
+ by copying it to a temporary. */
+ STRLEN len;
+ const char *const pv = SvPV_const(*beglist, len);
+ SV *const temp
+ = newSVpvn_flags(pv, len,
+ SVs_TEMP | SvUTF8(*beglist));
+ *beglist = temp;
+ }
count = DO_UTF8(*beglist) ?
sv_len_utf8(*beglist) : sv_len(*beglist);
+ }
else count = 0;
if (lookahead.code == 'Z') count++;
}
if (savsym.howlen == e_star && beglist == endlist)
break; /* No way to continue */
}
+ items = endlist - beglist;
lookahead.flags = symptr->flags & ~group_modifiers;
goto no_change;
}
GROWING(0, cat, start, cur, len);
if (!uni_to_bytes(aTHX_ &aptr, end, cur, fromlen,
datumtype | TYPE_IS_PACK))
- Perl_croak(aTHX_ "Perl bug: predicted utf8 length not available");
+ Perl_croak(aTHX_ "panic: predicted utf8 length not available");
cur += fromlen;
len -= fromlen;
} else if (utf8) {
}
memset(cur, datumtype == 'A' ? ' ' : '\0', len);
cur += len;
+ SvTAINT(cat);
break;
}
case 'B':
if (datumtype == 'B')
while (l++ < len) {
if (utf8_source) {
- UV val;
+ UV val = 0;
NEXT_UNI_VAL(val, cur, str, end, utf8_flags);
bits |= val & 1;
} else bits |= *str++ & 1;
/* datumtype == 'b' */
while (l++ < len) {
if (utf8_source) {
- UV val;
+ UV val = 0;
NEXT_UNI_VAL(val, cur, str, end, utf8_flags);
if (val & 1) bits |= 0x80;
} else if (*str++ & 1)
if (datumtype == 'H')
while (l++ < len) {
if (utf8_source) {
- UV val;
+ UV val = 0;
NEXT_UNI_VAL(val, cur, str, end, utf8_flags);
if (val < 256 && isALPHA(val))
bits |= (val + 9) & 0xf;
else
while (l++ < len) {
if (utf8_source) {
- UV val;
+ UV val = 0;
NEXT_UNI_VAL(val, cur, str, end, utf8_flags);
if (val < 256 && isALPHA(val))
bits |= ((val + 9) & 0xf) << 4;
IV aiv;
fromstr = NEXTFROM;
aiv = SvIV(fromstr);
- if ((-128 > aiv || aiv > 127) &&
- ckWARN(WARN_PACK))
- Perl_warner(aTHX_ packWARN(WARN_PACK),
- "Character in 'c' format wrapped in pack");
+ if ((-128 > aiv || aiv > 127))
+ Perl_ck_warner(aTHX_ packWARN(WARN_PACK),
+ "Character in 'c' format wrapped in pack");
PUSH_BYTE(utf8, cur, (U8)(aiv & 0xff));
}
break;
utf8 = (symptr->flags & FLAG_DO_UTF8) ? 1 : 0;
break;
}
- GROWING(0, cat, start, cur, len);
while (len-- > 0) {
IV aiv;
fromstr = NEXTFROM;
aiv = SvIV(fromstr);
- if ((0 > aiv || aiv > 0xff) &&
- ckWARN(WARN_PACK))
- Perl_warner(aTHX_ packWARN(WARN_PACK),
- "Character in 'C' format wrapped in pack");
- *cur++ = (char)(aiv & 0xff);
+ if ((0 > aiv || aiv > 0xff))
+ Perl_ck_warner(aTHX_ packWARN(WARN_PACK),
+ "Character in 'C' format wrapped in pack");
+ PUSH_BYTE(utf8, cur, (U8)(aiv & 0xff));
}
break;
case 'W': {
char *end;
- U8 in_bytes = IN_BYTES;
+ U8 in_bytes = (U8)IN_BYTES;
end = start+SvLEN(cat)-1;
if (utf8) end -= UTF8_MAXLEN-1;
end = start+SvLEN(cat)-UTF8_MAXLEN;
goto W_utf8;
}
- if (ckWARN(WARN_PACK))
- Perl_warner(aTHX_ packWARN(WARN_PACK),
- "Character in 'W' format wrapped in pack");
+ Perl_ck_warner(aTHX_ packWARN(WARN_PACK),
+ "Character in 'W' format wrapped in pack");
auv &= 0xff;
}
if (cur >= end) {
len+(endb-buffer)*UTF8_EXPAND);
end = start+SvLEN(cat);
}
- bytes_to_uni(aTHX_ buffer, endb-buffer, &cur);
+ cur = bytes_to_uni(buffer, endb-buffer, cur);
} else {
if (cur >= end) {
*cur = '\0';
any OS that needs it, or removed if and when VOS implements
posix-976 (suggestion to support mapping to infinity).
Paul.Green@stratus.com 02-04-02. */
+{
+extern const float _float_constants[];
if (anv > FLT_MAX)
afloat = _float_constants[0]; /* single prec. inf. */
else if (anv < -FLT_MAX)
afloat = _float_constants[0]; /* single prec. inf. */
else afloat = (float) anv;
+}
#else /* __VOS__ */
# if defined(VMS) && !defined(__IEEE_FP)
/* IEEE fp overflow shenanigans are unavailable on VAX and optional
for any OS that needs it, or removed if and when VOS
implements posix-976 (suggestion to support mapping to
infinity). Paul.Green@stratus.com 02-04-02. */
+{
+extern const double _double_constants[];
if (anv > DBL_MAX)
adouble = _double_constants[0]; /* double prec. inf. */
else if (anv < -DBL_MAX)
adouble = _double_constants[0]; /* double prec. inf. */
else adouble = (double) anv;
+}
#else /* __VOS__ */
# if defined(VMS) && !defined(__IEEE_FP)
/* IEEE fp overflow shenanigans are unavailable on VAX and optional
}
break;
case 'F': {
- NV anv;
+ NV_bytes anv;
Zero(&anv, 1, NV); /* can be long double with unused bits */
while (len-- > 0) {
fromstr = NEXTFROM;
- anv = SvNV(fromstr);
+#ifdef __GNUC__
+ /* to work round a gcc/x86 bug; don't use SvNV */
+ anv.nv = sv_2nv(fromstr);
+#else
+ anv.nv = SvNV(fromstr);
+#endif
DO_BO_PACK_N(anv, NV);
- PUSH_VAR(utf8, cur, anv);
+ PUSH_BYTES(utf8, cur, anv.bytes, sizeof(anv.bytes));
}
break;
}
#if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE)
case 'D': {
- long double aldouble;
+ ld_bytes aldouble;
/* long doubles can have unused bits, which may be nonzero */
Zero(&aldouble, 1, long double);
while (len-- > 0) {
fromstr = NEXTFROM;
- aldouble = (long double)SvNV(fromstr);
+# ifdef __GNUC__
+ /* to work round a gcc/x86 bug; don't use SvNV */
+ aldouble.ld = (long double)sv_2nv(fromstr);
+# else
+ aldouble.ld = (long double)SvNV(fromstr);
+# endif
DO_BO_PACK_N(aldouble, long double);
- PUSH_VAR(utf8, cur, aldouble);
+ PUSH_BYTES(utf8, cur, aldouble.bytes, sizeof(aldouble.bytes));
}
break;
}
goto w_string;
else if (SvNOKp(fromstr)) {
/* 10**NV_MAX_10_EXP is the largest power of 10
- so 10**(NV_MAX_10_EXP+1) is definately unrepresentable
+ so 10**(NV_MAX_10_EXP+1) is definitely unrepresentable
given 10**(NV_MAX_10_EXP+1) == 128 ** x solve for x:
x = (NV_MAX_10_EXP+1) * log (10) / log (128)
And with that many bytes only Inf can overflow.
* gone.
*/
if ((SvTEMP(fromstr) || (SvPADTMP(fromstr) &&
- !SvREADONLY(fromstr))) && ckWARN(WARN_PACK)) {
- Perl_warner(aTHX_ packWARN(WARN_PACK),
- "Attempt to pack pointer to temporary value");
+ !SvREADONLY(fromstr)))) {
+ Perl_ck_warner(aTHX_ packWARN(WARN_PACK),
+ "Attempt to pack pointer to temporary value");
}
if (SvPOK(fromstr) || SvNIOK(fromstr))
aptr = SvPV_nomg_const_nolen(fromstr);
if (len <= 2) len = 45;
else len = len / 3 * 3;
if (len >= 64) {
- if (ckWARN(WARN_PACK))
- Perl_warner(aTHX_ packWARN(WARN_PACK),
- "Field too wide in 'u' format in pack");
+ Perl_ck_warner(aTHX_ packWARN(WARN_PACK),
+ "Field too wide in 'u' format in pack");
len = 63;
}
aptr = SvPV_const(fromstr, fromlen);
'u' | TYPE_IS_PACK)) {
*cur = '\0';
SvCUR_set(cat, cur - start);
- Perl_croak(aTHX_ "Assertion: string is shorter than advertised");
+ Perl_croak(aTHX_ "panic: string is shorter than advertised");
}
end = doencodes(hunk, buffer, todo);
} else {
PP(pp_pack)
{
- dSP; dMARK; dORIGMARK; dTARGET;
+ dVAR; dSP; dMARK; dORIGMARK; dTARGET;
register SV *cat = TARG;
STRLEN fromlen;
SV *pat_sv = *++MARK;
register const char *patend = pat + fromlen;
MARK++;
- sv_setpvn(cat, "", 0);
+ sv_setpvs(cat, "");
SvUTF8_off(cat);
packlist(cat, pat, patend, MARK, SP + 1);
https://perl5.git.perl.org / perl5.git / blobdiff