*
*/
+/*
+ * He still hopefully carried some of his gear in his pack: a small tinder-box,
+ * two small shallow pans, the smaller fitting into the larger; inside them a
+ * 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.
+ */
+
#include "EXTERN.h"
#define PERL_IN_PP_PACK_C
#include "perl.h"
#define ISUUCHAR(ch) (memchr(PL_uuemap, (ch), sizeof(PL_uuemap)-1) || (ch) == ' ')
#endif
+#define UNPACK_ONLY_ONE 0x1
+#define UNPACK_DO_UTF8 0x2
-PP(pp_unpack)
+STATIC char *
+S_group_end(pTHX_ register char *pat, register char *patend, char ender)
{
- dSP;
- dPOPPOPssrl;
- I32 start_sp_offset = SP - PL_stack_base;
- I32 gimme = GIMME_V;
- SV *sv;
- STRLEN llen;
- STRLEN rlen;
- register char *pat = SvPV(left, llen);
-#ifdef PACKED_IS_OCTETS
- /* Packed side is assumed to be octets - so force downgrade if it
- has been UTF-8 encoded by accident
- */
- register char *s = SvPVbyte(right, rlen);
+ while (pat < patend) {
+ char c = *pat++;
+
+ if (isSPACE(c))
+ continue;
+ else if (c == ender)
+ return --pat;
+ else if (c == '#') {
+ while (pat < patend && *pat != '\n')
+ pat++;
+ continue;
+ } else if (c == '(')
+ pat = group_end(pat, patend, ')') + 1;
+ else if (c == '[')
+ pat = group_end(pat, patend, ']') + 1;
+ }
+ Perl_croak(aTHX_ "No group ending character `%c' found", ender);
+ return 0;
+}
+
+#define TYPE_IS_SHRIEKING 0x100
+
+/* Returns the sizeof() struct described by pat */
+STATIC I32
+S_measure_struct(pTHX_ char *pat, register char *patend)
+{
+ I32 datumtype;
+ register I32 len;
+ register I32 total = 0;
+ int commas = 0;
+ int star; /* 1 if count is *, -1 if no count given, -2 for / */
+#ifdef PERL_NATINT_PACK
+ int natint; /* native integer */
+ int unatint; /* unsigned native integer */
+#endif
+ char buf[2];
+ register int size;
+
+ while ((pat = next_symbol(pat, patend)) < patend) {
+ datumtype = *pat++ & 0xFF;
+#ifdef PERL_NATINT_PACK
+ natint = 0;
+#endif
+ if (*pat == '!') {
+ static const char *natstr = "sSiIlLxX";
+
+ if (strchr(natstr, datumtype)) {
+ if (datumtype == 'x' || datumtype == 'X') {
+ datumtype |= TYPE_IS_SHRIEKING;
+ } else { /* XXXX Should be redone similarly! */
+#ifdef PERL_NATINT_PACK
+ natint = 1;
+#endif
+ }
+ pat++;
+ }
+ else
+ Perl_croak(aTHX_ "'!' allowed only after types %s", natstr);
+ }
+ len = find_count(&pat, patend, &star);
+ if (star > 0) /* */
+ Perl_croak(aTHX_ "%s not allowed in length fields", "count *");
+ else if (star < 0) /* No explicit len */
+ len = datumtype != '@';
+
+ switch(datumtype) {
+ default:
+ Perl_croak(aTHX_ "Invalid type in unpack: '%c'", (int)datumtype);
+ case '@':
+ case '/':
+ case 'U': /* XXXX Is it correct? */
+ case 'w':
+ case 'u':
+ buf[0] = datumtype;
+ buf[1] = 0;
+ Perl_croak(aTHX_ "%s not allowed in length fields", buf);
+ case ',': /* grandfather in commas but with a warning */
+ if (commas++ == 0 && ckWARN(WARN_UNPACK))
+ Perl_warner(aTHX_ packWARN(WARN_UNPACK),
+ "Invalid type in unpack: '%c'", (int)datumtype);
+ /* FALL THROUGH */
+ case '%':
+ size = 0;
+ break;
+ case '(':
+ {
+ char *beg = pat, *end;
+
+ if (star >= 0)
+ Perl_croak(aTHX_ "()-group starts with a count");
+ end = group_end(beg, patend, ')');
+ pat = end + 1;
+ len = find_count(&pat, patend, &star);
+ if (star < 0) /* No count */
+ len = 1;
+ else if (star > 0) /* Star */
+ Perl_croak(aTHX_ "%s not allowed in length fields", "count *");
+ /* XXXX Theoretically, we need to measure many times at different
+ positions, since the subexpression may contain
+ alignment commands, but be not of aligned length.
+ Need to detect this and croak(). */
+ size = measure_struct(beg, end);
+ break;
+ }
+ case 'X' | TYPE_IS_SHRIEKING:
+ /* XXXX Is this useful? Then need to treat MEASURE_BACKWARDS. */
+ if (!len) /* Avoid division by 0 */
+ len = 1;
+ len = total % len; /* Assumed: the start is aligned. */
+ /* FALL THROUGH */
+ case 'X':
+ size = -1;
+ if (total < len)
+ Perl_croak(aTHX_ "X outside of string");
+ break;
+ case 'x' | TYPE_IS_SHRIEKING:
+ if (!len) /* Avoid division by 0 */
+ len = 1;
+ star = total % len; /* Assumed: the start is aligned. */
+ if (star) /* Other portable ways? */
+ len = len - star;
+ else
+ len = 0;
+ /* FALL THROUGH */
+ case 'x':
+ case 'A':
+ case 'Z':
+ case 'a':
+ case 'c':
+ case 'C':
+ size = 1;
+ break;
+ case 'B':
+ case 'b':
+ len = (len + 7)/8;
+ size = 1;
+ break;
+ case 'H':
+ case 'h':
+ len = (len + 1)/2;
+ size = 1;
+ break;
+ case 's':
+#if SHORTSIZE == SIZE16
+ size = SIZE16;
#else
- register char *s = SvPV(right, rlen);
+ size = (natint ? sizeof(short) : SIZE16);
#endif
- char *strend = s + rlen;
- char *strbeg = s;
- register char *patend = pat + llen;
+ break;
+ case 'v':
+ case 'n':
+ case 'S':
+#if SHORTSIZE == SIZE16
+ size = SIZE16;
+#else
+ unatint = natint && datumtype == 'S';
+ size = (unatint ? sizeof(unsigned short) : SIZE16);
+#endif
+ break;
+ case 'i':
+ size = sizeof(int);
+ break;
+ case 'I':
+ size = sizeof(unsigned int);
+ break;
+ case 'j':
+ size = IVSIZE;
+ break;
+ case 'J':
+ size = UVSIZE;
+ break;
+ case 'l':
+#if LONGSIZE == SIZE32
+ size = SIZE32;
+#else
+ size = (natint ? sizeof(long) : SIZE32);
+#endif
+ break;
+ case 'V':
+ case 'N':
+ case 'L':
+#if LONGSIZE == SIZE32
+ size = SIZE32;
+#else
+ unatint = natint && datumtype == 'L';
+ size = (unatint ? sizeof(unsigned long) : SIZE32);
+#endif
+ break;
+ case 'P':
+ len = 1;
+ /* FALL THROUGH */
+ case 'p':
+ size = sizeof(char*);
+ break;
+#ifdef HAS_QUAD
+ case 'q':
+ size = sizeof(Quad_t);
+ break;
+ case 'Q':
+ size = sizeof(Uquad_t);
+ break;
+#endif
+ case 'f':
+ size = sizeof(float);
+ break;
+ case 'd':
+ size = sizeof(double);
+ break;
+ case 'F':
+ size = NVSIZE;
+ break;
+#if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE)
+ case 'D':
+ size = LONG_DOUBLESIZE;
+ break;
+#endif
+ }
+ total += len * size;
+ }
+ return total;
+}
+
+/* Returns -1 on no count or on star */
+STATIC I32
+S_find_count(pTHX_ char **ppat, register char *patend, int *star)
+{
+ char *pat = *ppat;
+ I32 len;
+
+ *star = 0;
+ if (pat >= patend)
+ len = 1;
+ else if (*pat == '*') {
+ pat++;
+ *star = 1;
+ len = -1;
+ }
+ else if (isDIGIT(*pat)) {
+ len = *pat++ - '0';
+ while (isDIGIT(*pat)) {
+ len = (len * 10) + (*pat++ - '0');
+ if (len < 0) /* 50% chance of catching... */
+ Perl_croak(aTHX_ "Repeat count in pack/unpack overflows");
+ }
+ }
+ else if (*pat == '[') {
+ char *end = group_end(++pat, patend, ']');
+
+ len = 0;
+ *ppat = end + 1;
+ if (isDIGIT(*pat))
+ return find_count(&pat, end, star);
+ return measure_struct(pat, end);
+ }
+ else
+ len = *star = -1;
+ *ppat = pat;
+ return len;
+}
+
+STATIC char *
+S_next_symbol(pTHX_ register char *pat, register char *patend)
+{
+ while (pat < patend) {
+ if (isSPACE(*pat))
+ pat++;
+ else if (*pat == '#') {
+ pat++;
+ while (pat < patend && *pat != '\n')
+ pat++;
+ if (pat < patend)
+ pat++;
+ }
+ else
+ return pat;
+ }
+ return pat;
+}
+
+/*
+=for apidoc unpack_str
+
+The engine implementing unpack() Perl function.
+
+=cut */
+
+I32
+Perl_unpack_str(pTHX_ char *pat, register char *patend, register char *s, char *strbeg, char *strend, char **new_s, I32 ocnt, U32 flags)
+{
+ dSP;
I32 datumtype;
register I32 len;
register I32 bits = 0;
register char *str;
+ SV *sv;
+ I32 start_sp_offset = SP - PL_stack_base;
/* These must not be in registers: */
short ashort;
float afloat;
double adouble;
I32 checksum = 0;
- UV culong = 0;
+ UV cuv = 0;
NV cdouble = 0.0;
- const int bits_in_uv = 8 * sizeof(culong);
+ const int bits_in_uv = 8 * sizeof(cuv);
int commas = 0;
- int star;
+ int star; /* 1 if count is *, -1 if no count given, -2 for / */
#ifdef PERL_NATINT_PACK
int natint; /* native integer */
int unatint; /* unsigned native integer */
#endif
- bool do_utf8 = DO_UTF8(right);
+ IV aiv;
+ UV auv;
+ NV anv;
+#if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE)
+ long double aldouble;
+#endif
+ bool do_utf8 = flags & UNPACK_DO_UTF8;
- while (pat < patend) {
- reparse:
+ while ((pat = next_symbol(pat, patend)) < patend) {
datumtype = *pat++ & 0xFF;
#ifdef PERL_NATINT_PACK
natint = 0;
#endif
- if (isSPACE(datumtype))
- continue;
- if (datumtype == '#') {
- while (pat < patend && *pat != '\n')
- pat++;
- continue;
- }
+ /* do first one only unless in list context
+ / is implemented by unpacking the count, then poping it from the
+ stack, so must check that we're not in the middle of a / */
+ if ( (flags & UNPACK_ONLY_ONE)
+ && (SP - PL_stack_base == start_sp_offset + 1)
+ && (datumtype != '/') )
+ break;
if (*pat == '!') {
- char *natstr = "sSiIlL";
+ static const char natstr[] = "sSiIlLxX";
if (strchr(natstr, datumtype)) {
+ if (datumtype == 'x' || datumtype == 'X') {
+ datumtype |= TYPE_IS_SHRIEKING;
+ } else { /* XXXX Should be redone similarly! */
#ifdef PERL_NATINT_PACK
- natint = 1;
+ natint = 1;
#endif
+ }
pat++;
}
else
- DIE(aTHX_ "'!' allowed only after types %s", natstr);
+ Perl_croak(aTHX_ "'!' allowed only after types %s", natstr);
}
- star = 0;
- if (pat >= patend)
- len = 1;
- else if (*pat == '*') {
- len = strend - strbeg; /* long enough */
- pat++;
- star = 1;
- }
- else if (isDIGIT(*pat)) {
- len = *pat++ - '0';
- while (isDIGIT(*pat)) {
- len = (len * 10) + (*pat++ - '0');
- if (len < 0)
- DIE(aTHX_ "Repeat count in unpack overflows");
- }
- }
- else
- len = (datumtype != '@');
+ len = find_count(&pat, patend, &star);
+ if (star > 0)
+ len = strend - strbeg; /* long enough */
+ else if (star < 0) /* No explicit len */
+ len = datumtype != '@';
+
redo_switch:
switch(datumtype) {
default:
- DIE(aTHX_ "Invalid type in unpack: '%c'", (int)datumtype);
+ Perl_croak(aTHX_ "Invalid type in unpack: '%c'", (int)datumtype);
case ',': /* grandfather in commas but with a warning */
if (commas++ == 0 && ckWARN(WARN_UNPACK))
- Perl_warner(aTHX_ WARN_UNPACK,
+ Perl_warner(aTHX_ packWARN(WARN_UNPACK),
"Invalid type in unpack: '%c'", (int)datumtype);
break;
case '%':
- if (len == 1 && pat[-1] != '1')
- len = 16;
+ if (len == 1 && pat[-1] != '1' && pat[-1] != ']')
+ len = 16; /* len is not specified */
checksum = len;
- culong = 0;
+ cuv = 0;
cdouble = 0;
- if (pat < patend)
- goto reparse;
+ continue;
break;
+ case '(':
+ {
+ char *beg = pat;
+ char *ss = s; /* Move from register */
+
+ if (star >= 0)
+ Perl_croak(aTHX_ "()-group starts with a count");
+ aptr = group_end(beg, patend, ')');
+ pat = aptr + 1;
+ if (star != -2) {
+ len = find_count(&pat, patend, &star);
+ if (star < 0) /* No count */
+ len = 1;
+ else if (star > 0) /* Star */
+ len = strend - strbeg; /* long enough? */
+ }
+ PUTBACK;
+ while (len--) {
+ unpack_str(beg, aptr, ss, strbeg, strend, &ss,
+ ocnt + SP - PL_stack_base - start_sp_offset, flags);
+ if (star > 0 && ss == strend)
+ break; /* No way to continue */
+ }
+ SPAGAIN;
+ s = ss;
+ break;
+ }
case '@':
if (len > strend - strbeg)
- DIE(aTHX_ "@ outside of string");
+ Perl_croak(aTHX_ "@ outside of string");
s = strbeg + len;
break;
+ case 'X' | TYPE_IS_SHRIEKING:
+ if (!len) /* Avoid division by 0 */
+ len = 1;
+ len = (s - strbeg) % len;
+ /* FALL THROUGH */
case 'X':
if (len > s - strbeg)
- DIE(aTHX_ "X outside of string");
+ Perl_croak(aTHX_ "X outside of string");
s -= len;
break;
+ case 'x' | TYPE_IS_SHRIEKING:
+ if (!len) /* Avoid division by 0 */
+ len = 1;
+ aint = (s - strbeg) % len;
+ if (aint) /* Other portable ways? */
+ len = len - aint;
+ else
+ len = 0;
+ /* FALL THROUGH */
case 'x':
if (len > strend - s)
- DIE(aTHX_ "x outside of string");
+ Perl_croak(aTHX_ "x outside of string");
s += len;
break;
case '/':
- if (start_sp_offset >= SP - PL_stack_base)
- DIE(aTHX_ "/ must follow a numeric type");
+ if (ocnt + SP - PL_stack_base - start_sp_offset <= 0)
+ Perl_croak(aTHX_ "/ must follow a numeric type");
datumtype = *pat++;
if (*pat == '*')
pat++; /* ignore '*' for compatibility with pack */
if (isDIGIT(*pat))
- DIE(aTHX_ "/ cannot take a count" );
+ Perl_croak(aTHX_ "/ cannot take a count" );
len = POPi;
- star = 0;
+ star = -2;
goto redo_switch;
case 'A':
case 'Z':
s = SvPVX(sv);
while (*s)
s++;
- if (star) /* exact for 'Z*' */
+ if (star > 0) /* exact for 'Z*' */
len = s - SvPVX(sv) + 1;
}
else { /* 'A' strips both nulls and spaces */
break;
case 'B':
case 'b':
- if (star || len > (strend - s) * 8)
+ if (star > 0 || len > (strend - s) * 8)
len = (strend - s) * 8;
if (checksum) {
if (!PL_bitcount) {
}
}
while (len >= 8) {
- culong += PL_bitcount[*(unsigned char*)s++];
+ cuv += PL_bitcount[*(unsigned char*)s++];
len -= 8;
}
if (len) {
bits = *s;
if (datumtype == 'b') {
while (len-- > 0) {
- if (bits & 1) culong++;
+ if (bits & 1) cuv++;
bits >>= 1;
}
}
else {
while (len-- > 0) {
- if (bits & 128) culong++;
+ if (bits & 128) cuv++;
bits <<= 1;
}
}
break;
case 'H':
case 'h':
- if (star || len > (strend - s) * 2)
+ if (star > 0 || len > (strend - s) * 2)
len = (strend - s) * 2;
sv = NEWSV(35, len + 1);
SvCUR_set(sv, len);
if (checksum > bits_in_uv)
cdouble += (NV)aint;
else
- culong += aint;
+ cuv += aint;
}
}
else {
uchar_checksum:
while (len-- > 0) {
auint = *s++ & 255;
- culong += auint;
+ cuv += auint;
}
}
else {
if (checksum) {
while (len-- > 0 && s < strend) {
STRLEN alen;
- auint = utf8n_to_uvchr((U8*)s, strend - s, &alen, 0);
+ auint = NATIVE_TO_UNI(utf8n_to_uvchr((U8*)s, strend - s, &alen, ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANYUV));
along = alen;
s += along;
if (checksum > bits_in_uv)
cdouble += (NV)auint;
else
- culong += auint;
+ cuv += auint;
}
}
else {
EXTEND_MORTAL(len);
while (len-- > 0 && s < strend) {
STRLEN alen;
- auint = utf8n_to_uvchr((U8*)s, strend - s, &alen, 0);
+ auint = NATIVE_TO_UNI(utf8n_to_uvchr((U8*)s, strend - s, &alen, ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANYUV));
along = alen;
s += along;
sv = NEWSV(37, 0);
if (checksum > bits_in_uv)
cdouble += (NV)ashort;
else
- culong += ashort;
+ cuv += ashort;
}
}
if (checksum > bits_in_uv)
cdouble += (NV)ashort;
else
- culong += ashort;
+ cuv += ashort;
}
}
}
if (checksum > bits_in_uv)
cdouble += (NV)aushort;
else
- culong += aushort;
+ cuv += aushort;
}
}
else
if (checksum > bits_in_uv)
cdouble += (NV)aushort;
else
- culong += aushort;
+ cuv += aushort;
}
}
}
if (checksum > bits_in_uv)
cdouble += (NV)aint;
else
- culong += aint;
+ cuv += aint;
}
}
else {
if (checksum > bits_in_uv)
cdouble += (NV)auint;
else
- culong += auint;
+ cuv += auint;
}
}
else {
}
}
break;
+ case 'j':
+ along = (strend - s) / IVSIZE;
+ if (len > along)
+ len = along;
+ if (checksum) {
+ while (len-- > 0) {
+ Copy(s, &aiv, 1, IV);
+ s += IVSIZE;
+ if (checksum > bits_in_uv)
+ cdouble += (NV)aiv;
+ else
+ cuv += aiv;
+ }
+ }
+ else {
+ EXTEND(SP, len);
+ EXTEND_MORTAL(len);
+ while (len-- > 0) {
+ Copy(s, &aiv, 1, IV);
+ s += IVSIZE;
+ sv = NEWSV(40, 0);
+ sv_setiv(sv, aiv);
+ PUSHs(sv_2mortal(sv));
+ }
+ }
+ break;
+ case 'J':
+ along = (strend - s) / UVSIZE;
+ if (len > along)
+ len = along;
+ if (checksum) {
+ while (len-- > 0) {
+ Copy(s, &auv, 1, UV);
+ s += UVSIZE;
+ if (checksum > bits_in_uv)
+ cdouble += (NV)auv;
+ else
+ cuv += auv;
+ }
+ }
+ else {
+ EXTEND(SP, len);
+ EXTEND_MORTAL(len);
+ while (len-- > 0) {
+ Copy(s, &auv, 1, UV);
+ s += UVSIZE;
+ sv = NEWSV(41, 0);
+ sv_setuv(sv, auv);
+ PUSHs(sv_2mortal(sv));
+ }
+ }
+ break;
case 'l':
#if LONGSIZE == SIZE32
along = (strend - s) / SIZE32;
if (checksum > bits_in_uv)
cdouble += (NV)along;
else
- culong += along;
+ cuv += along;
}
}
else
if (checksum > bits_in_uv)
cdouble += (NV)along;
else
- culong += along;
+ cuv += along;
}
}
}
if (checksum > bits_in_uv)
cdouble += (NV)aulong;
else
- culong += aulong;
+ cuv += aulong;
}
}
else
if (checksum > bits_in_uv)
cdouble += (NV)aulong;
else
- culong += aulong;
+ cuv += aulong;
}
}
}
}
}
if ((s >= strend) && bytes)
- DIE(aTHX_ "Unterminated compressed integer");
+ Perl_croak(aTHX_ "Unterminated compressed integer");
}
break;
case 'P':
- if (star)
- DIE(aTHX_ "P must have an explicit size");
+ if (star > 0)
+ Perl_croak(aTHX_ "P must have an explicit size");
EXTEND(SP, 1);
if (sizeof(char*) > strend - s)
break;
if (checksum > bits_in_uv)
cdouble += (NV)aquad;
else
- culong += aquad;
+ cuv += aquad;
}
}
else {
if (s + sizeof(Quad_t) > strend)
aquad = 0;
else {
- Copy(s, &aquad, 1, Quad_t);
- s += sizeof(Quad_t);
+ Copy(s, &aquad, 1, Quad_t);
+ s += sizeof(Quad_t);
}
sv = NEWSV(42, 0);
if (aquad >= IV_MIN && aquad <= IV_MAX)
- sv_setiv(sv, (IV)aquad);
+ sv_setiv(sv, (IV)aquad);
else
sv_setnv(sv, (NV)aquad);
PUSHs(sv_2mortal(sv));
}
break;
case 'Q':
- along = (strend - s) / sizeof(Quad_t);
+ along = (strend - s) / sizeof(Uquad_t);
if (len > along)
len = along;
if (checksum) {
if (checksum > bits_in_uv)
cdouble += (NV)auquad;
else
- culong += auquad;
+ cuv += auquad;
}
}
else {
#endif
/* float and double added gnb@melba.bby.oz.au 22/11/89 */
case 'f':
- case 'F':
along = (strend - s) / sizeof(float);
if (len > along)
len = along;
}
break;
case 'd':
- case 'D':
along = (strend - s) / sizeof(double);
if (len > along)
len = along;
}
}
break;
+ case 'F':
+ along = (strend - s) / NVSIZE;
+ if (len > along)
+ len = along;
+ if (checksum) {
+ while (len-- > 0) {
+ Copy(s, &anv, 1, NV);
+ s += NVSIZE;
+ cdouble += anv;
+ }
+ }
+ else {
+ EXTEND(SP, len);
+ EXTEND_MORTAL(len);
+ while (len-- > 0) {
+ Copy(s, &anv, 1, NV);
+ s += NVSIZE;
+ sv = NEWSV(48, 0);
+ sv_setnv(sv, anv);
+ PUSHs(sv_2mortal(sv));
+ }
+ }
+ break;
+#if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE)
+ case 'D':
+ along = (strend - s) / LONG_DOUBLESIZE;
+ if (len > along)
+ len = along;
+ if (checksum) {
+ while (len-- > 0) {
+ Copy(s, &aldouble, 1, long double);
+ s += LONG_DOUBLESIZE;
+ cdouble += aldouble;
+ }
+ }
+ else {
+ EXTEND(SP, len);
+ EXTEND_MORTAL(len);
+ while (len-- > 0) {
+ Copy(s, &aldouble, 1, long double);
+ s += LONG_DOUBLESIZE;
+ sv = NEWSV(48, 0);
+ sv_setnv(sv, (NV)aldouble);
+ PUSHs(sv_2mortal(sv));
+ }
+ }
+ break;
+#endif
case 'u':
/* MKS:
* Initialise the decode mapping. By using a table driven
}
if (*s == '\n')
s++;
- else if (s[1] == '\n') /* possible checksum byte */
- s += 2;
+ else /* possible checksum byte */
+ if (s + 1 < strend && s[1] == '\n')
+ s += 2;
}
XPUSHs(sv_2mortal(sv));
break;
if (checksum) {
sv = NEWSV(42, 0);
if (strchr("fFdD", datumtype) ||
- (checksum > bits_in_uv && strchr("csSiIlLnNUvVqQ", datumtype)) ) {
+ (checksum > bits_in_uv &&
+ strchr("csSiIlLnNUvVqQjJ", datumtype)) ) {
NV trouble;
adouble = (NV) (1 << (checksum & 15));
else {
if (checksum < bits_in_uv) {
UV mask = ((UV)1 << checksum) - 1;
- culong &= mask;
+
+ cuv &= mask;
}
- sv_setuv(sv, (UV)culong);
+ sv_setuv(sv, cuv);
}
XPUSHs(sv_2mortal(sv));
checksum = 0;
}
- if (gimme != G_ARRAY &&
- SP - PL_stack_base == start_sp_offset + 1) {
- /* do first one only unless in list context
- / is implmented by unpacking the count, then poping it from the
- stack, so must check that we're not in the middle of a / */
- if ((pat >= patend) || *pat != '/')
- RETURN;
- }
}
- if (SP - PL_stack_base == start_sp_offset && gimme == G_SCALAR)
- PUSHs(&PL_sv_undef);
+ if (new_s)
+ *new_s = s;
+ PUTBACK;
+ return SP - PL_stack_base - start_sp_offset;
+}
+
+PP(pp_unpack)
+{
+ dSP;
+ dPOPPOPssrl;
+ I32 gimme = GIMME_V;
+ STRLEN llen;
+ STRLEN rlen;
+ register char *pat = SvPV(left, llen);
+#ifdef PACKED_IS_OCTETS
+ /* Packed side is assumed to be octets - so force downgrade if it
+ has been UTF-8 encoded by accident
+ */
+ register char *s = SvPVbyte(right, rlen);
+#else
+ register char *s = SvPV(right, rlen);
+#endif
+ char *strend = s + rlen;
+ register char *patend = pat + llen;
+ register I32 cnt;
+
+ PUTBACK;
+ cnt = unpack_str(pat, patend, s, s, strend, NULL, 0,
+ ((gimme == G_SCALAR) ? UNPACK_ONLY_ONE : 0)
+ | (DO_UTF8(right) ? UNPACK_DO_UTF8 : 0));
+ SPAGAIN;
+ if ( !cnt && gimme == G_SCALAR )
+ PUSHs(&PL_sv_undef);
RETURN;
}
return (m);
}
+#define PACK_CHILD 0x1
-PP(pp_pack)
+/*
+=for apidoc pack_cat
+
+The engine implementing pack() Perl function.
+
+=cut */
+
+void
+Perl_pack_cat(pTHX_ SV *cat, char *pat, register char *patend, register SV **beglist, SV **endlist, SV ***next_in_list, U32 flags)
{
- dSP; dMARK; dORIGMARK; dTARGET;
- register SV *cat = TARG;
register I32 items;
STRLEN fromlen;
- register char *pat = SvPVx(*++MARK, fromlen);
- char *patcopy;
- register char *patend = pat + fromlen;
register I32 len;
I32 datumtype;
SV *fromstr;
/*SUPPRESS 442*/
static char null10[] = {0,0,0,0,0,0,0,0,0,0};
static char *space10 = " ";
+ int star;
/* These must not be in registers: */
char achar;
unsigned int auint;
I32 along;
U32 aulong;
+ IV aiv;
+ UV auv;
+ NV anv;
+#if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE)
+ long double aldouble;
+#endif
#ifdef HAS_QUAD
Quad_t aquad;
Uquad_t auquad;
int natint; /* native integer */
#endif
- items = SP - MARK;
- MARK++;
- sv_setpvn(cat, "", 0);
- patcopy = pat;
- while (pat < patend) {
+ items = endlist - beglist;
+#ifndef PACKED_IS_OCTETS
+ pat = next_symbol(pat, patend);
+ if (pat < patend && *pat == 'U' && !flags)
+ SvUTF8_on(cat);
+#endif
+ while ((pat = next_symbol(pat, patend)) < patend) {
SV *lengthcode = Nullsv;
-#define NEXTFROM ( lengthcode ? lengthcode : items-- > 0 ? *MARK++ : &PL_sv_no)
+#define NEXTFROM ( lengthcode ? lengthcode : items-- > 0 ? *beglist++ : &PL_sv_no)
datumtype = *pat++ & 0xFF;
#ifdef PERL_NATINT_PACK
natint = 0;
#endif
- if (isSPACE(datumtype)) {
- patcopy++;
- continue;
- }
-#ifndef PACKED_IS_OCTETS
- if (datumtype == 'U' && pat == patcopy+1)
- SvUTF8_on(cat);
-#endif
- if (datumtype == '#') {
- while (pat < patend && *pat != '\n')
- pat++;
- continue;
- }
if (*pat == '!') {
- char *natstr = "sSiIlL";
+ static const char natstr[] = "sSiIlLxX";
if (strchr(natstr, datumtype)) {
+ if (datumtype == 'x' || datumtype == 'X') {
+ datumtype |= TYPE_IS_SHRIEKING;
+ } else { /* XXXX Should be redone similarly! */
#ifdef PERL_NATINT_PACK
- natint = 1;
+ natint = 1;
#endif
+ }
pat++;
}
else
- DIE(aTHX_ "'!' allowed only after types %s", natstr);
+ Perl_croak(aTHX_ "'!' allowed only after types %s", natstr);
}
- if (*pat == '*') {
+ len = find_count(&pat, patend, &star);
+ if (star > 0) /* Count is '*' */
len = strchr("@Xxu", datumtype) ? 0 : items;
- pat++;
- }
- else if (isDIGIT(*pat)) {
- len = *pat++ - '0';
- while (isDIGIT(*pat)) {
- len = (len * 10) + (*pat++ - '0');
- if (len < 0)
- DIE(aTHX_ "Repeat count in pack overflows");
- }
- }
- else
+ else if (star < 0) /* Default len */
len = 1;
- if (*pat == '/') {
+ if (*pat == '/') { /* doing lookahead how... */
++pat;
if ((*pat != 'a' && *pat != 'A' && *pat != 'Z') || pat[1] != '*')
- DIE(aTHX_ "/ must be followed by a*, A* or Z*");
+ Perl_croak(aTHX_ "/ must be followed by a*, A* or Z*");
lengthcode = sv_2mortal(newSViv(sv_len(items > 0
- ? *MARK : &PL_sv_no)
+ ? *beglist : &PL_sv_no)
+ (*pat == 'Z' ? 1 : 0)));
}
switch(datumtype) {
default:
- DIE(aTHX_ "Invalid type in pack: '%c'", (int)datumtype);
+ Perl_croak(aTHX_ "Invalid type in pack: '%c'", (int)datumtype);
case ',': /* grandfather in commas but with a warning */
if (commas++ == 0 && ckWARN(WARN_PACK))
- Perl_warner(aTHX_ WARN_PACK,
+ Perl_warner(aTHX_ packWARN(WARN_PACK),
"Invalid type in pack: '%c'", (int)datumtype);
break;
case '%':
- DIE(aTHX_ "%% may only be used in unpack");
+ Perl_croak(aTHX_ "%% may only be used in unpack");
case '@':
len -= SvCUR(cat);
if (len > 0)
if (len > 0)
goto shrink;
break;
+ case '(':
+ {
+ char *beg = pat;
+ SV **savebeglist = beglist; /* beglist de-register-ed */
+
+ if (star >= 0)
+ Perl_croak(aTHX_ "()-group starts with a count");
+ aptr = group_end(beg, patend, ')');
+ pat = aptr + 1;
+ if (star != -2) {
+ len = find_count(&pat, patend, &star);
+ if (star < 0) /* No count */
+ len = 1;
+ else if (star > 0) /* Star */
+ len = items; /* long enough? */
+ }
+ while (len--) {
+ pack_cat(cat, beg, aptr, savebeglist, endlist,
+ &savebeglist, PACK_CHILD);
+ if (star > 0 && savebeglist == endlist)
+ break; /* No way to continue */
+ }
+ beglist = savebeglist;
+ break;
+ }
+ case 'X' | TYPE_IS_SHRIEKING:
+ if (!len) /* Avoid division by 0 */
+ len = 1;
+ len = (SvCUR(cat)) % len;
+ /* FALL THROUGH */
case 'X':
shrink:
if (SvCUR(cat) < len)
- DIE(aTHX_ "X outside of string");
+ Perl_croak(aTHX_ "X outside of string");
SvCUR(cat) -= len;
*SvEND(cat) = '\0';
break;
+ case 'x' | TYPE_IS_SHRIEKING:
+ if (!len) /* Avoid division by 0 */
+ len = 1;
+ aint = (SvCUR(cat)) % len;
+ if (aint) /* Other portable ways? */
+ len = len - aint;
+ else
+ len = 0;
+ /* FALL THROUGH */
case 'x':
grow:
while (len >= 10) {
case 'a':
fromstr = NEXTFROM;
aptr = SvPV(fromstr, fromlen);
- if (pat[lengthcode ? -2 : -1] == '*') { /* -2 after '/' */
+ if (star > 0) { /* -2 after '/' */
len = fromlen;
if (datumtype == 'Z')
++len;
fromstr = NEXTFROM;
saveitems = items;
str = SvPV(fromstr, fromlen);
- if (pat[-1] == '*')
+ if (star > 0)
len = fromlen;
aint = SvCUR(cat);
SvCUR(cat) += (len+7)/8;
fromstr = NEXTFROM;
saveitems = items;
str = SvPV(fromstr, fromlen);
- if (pat[-1] == '*')
+ if (star > 0)
len = fromlen;
aint = SvCUR(cat);
SvCUR(cat) += (len+1)/2;
aint = SvIV(fromstr);
if ((aint < 0 || aint > 255) &&
ckWARN(WARN_PACK))
- Perl_warner(aTHX_ WARN_PACK,
+ Perl_warner(aTHX_ packWARN(WARN_PACK),
"Character in \"C\" format wrapped");
achar = aint & 255;
sv_catpvn(cat, &achar, sizeof(char));
aint = SvIV(fromstr);
if ((aint < -128 || aint > 127) &&
ckWARN(WARN_PACK))
- Perl_warner(aTHX_ WARN_PACK,
+ Perl_warner(aTHX_ packWARN(WARN_PACK),
"Character in \"c\" format wrapped");
achar = aint & 255;
sv_catpvn(cat, &achar, sizeof(char));
case 'U':
while (len-- > 0) {
fromstr = NEXTFROM;
- auint = SvUV(fromstr);
+ auint = UNI_TO_NATIVE(SvUV(fromstr));
SvGROW(cat, SvCUR(cat) + UTF8_MAXLEN + 1);
- SvCUR_set(cat, (char*)uvchr_to_utf8((U8*)SvEND(cat),auint)
- - SvPVX(cat));
+ SvCUR_set(cat,
+ (char*)uvchr_to_utf8_flags((U8*)SvEND(cat),
+ auint,
+ ckWARN(WARN_UTF8) ?
+ 0 : UNICODE_ALLOW_ANY)
+ - SvPVX(cat));
}
*SvEND(cat) = '\0';
break;
/* Float and double added by gnb@melba.bby.oz.au 22/11/89 */
case 'f':
- case 'F':
while (len-- > 0) {
fromstr = NEXTFROM;
afloat = (float)SvNV(fromstr);
}
break;
case 'd':
- case 'D':
while (len-- > 0) {
fromstr = NEXTFROM;
adouble = (double)SvNV(fromstr);
sv_catpvn(cat, (char *)&adouble, sizeof (double));
}
break;
+ case 'F':
+ while (len-- > 0) {
+ fromstr = NEXTFROM;
+ anv = SvNV(fromstr);
+ sv_catpvn(cat, (char *)&anv, NVSIZE);
+ }
+ break;
+#if defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE)
+ case 'D':
+ while (len-- > 0) {
+ fromstr = NEXTFROM;
+ aldouble = (long double)SvNV(fromstr);
+ sv_catpvn(cat, (char *)&aldouble, LONG_DOUBLESIZE);
+ }
+ break;
+#endif
case 'n':
while (len-- > 0) {
fromstr = NEXTFROM;
sv_catpvn(cat, (char*)&auint, sizeof(unsigned int));
}
break;
+ case 'j':
+ while (len-- > 0) {
+ fromstr = NEXTFROM;
+ aiv = SvIV(fromstr);
+ sv_catpvn(cat, (char*)&aiv, IVSIZE);
+ }
+ break;
+ case 'J':
+ while (len-- > 0) {
+ fromstr = NEXTFROM;
+ auv = SvUV(fromstr);
+ sv_catpvn(cat, (char*)&auv, UVSIZE);
+ }
+ break;
case 'w':
while (len-- > 0) {
fromstr = NEXTFROM;
- adouble = Perl_floor(SvNV(fromstr));
+ adouble = SvNV(fromstr);
if (adouble < 0)
- DIE(aTHX_ "Cannot compress negative numbers");
+ Perl_croak(aTHX_ "Cannot compress negative numbers");
- if (
-#if UVSIZE > 4 && UVSIZE >= NVSIZE
- adouble <= 0xffffffff
-#else
-# ifdef CXUX_BROKEN_CONSTANT_CONVERT
- adouble <= UV_MAX_cxux
-# else
- adouble <= UV_MAX
-# endif
-#endif
- )
+ /* 0xFFFFFFFFFFFFFFFF may cast to 18446744073709551616.0,
+ which is == UV_MAX_P1. IOK is fine (instead of UV_only), as
+ any negative IVs will have already been got by the croak()
+ above. IOK is untrue for fractions, so we test them
+ against UV_MAX_P1. */
+ if (SvIOK(fromstr) || adouble < UV_MAX_P1)
{
- char buf[1 + sizeof(UV)];
+ char buf[(sizeof(UV)*8)/7+1];
char *in = buf + sizeof(buf);
- UV auv = U_V(adouble);
+ UV auv = SvUV(fromstr);
do {
*--in = (auv & 0x7f) | 0x80;
/* Copy string and check for compliance */
from = SvPV(fromstr, len);
if ((norm = is_an_int(from, len)) == NULL)
- DIE(aTHX_ "can compress only unsigned integer");
+ Perl_croak(aTHX_ "can compress only unsigned integer");
New('w', result, len, char);
in = result + len;
char buf[sizeof(double) * 2]; /* 8/7 <= 2 */
char *in = buf + sizeof(buf);
+ adouble = Perl_floor(adouble);
do {
double next = floor(adouble / 128);
*--in = (unsigned char)(adouble - (next * 128)) | 0x80;
if (in <= buf) /* this cannot happen ;-) */
- DIE(aTHX_ "Cannot compress integer");
+ Perl_croak(aTHX_ "Cannot compress integer");
adouble = next;
} while (adouble > 0);
buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */
sv_catpvn(cat, in, (buf + sizeof(buf)) - in);
}
- else
- DIE(aTHX_ "Cannot compress non integer");
+ else {
+ char *from, *result, *in;
+ SV *norm;
+ STRLEN len;
+ bool done;
+
+ /* Copy string and check for compliance */
+ from = SvPV(fromstr, len);
+ if ((norm = is_an_int(from, len)) == NULL)
+ Perl_croak(aTHX_ "can compress only unsigned integer");
+
+ New('w', result, len, char);
+ in = result + len;
+ done = FALSE;
+ while (!done)
+ *--in = div128(norm, &done) | 0x80;
+ result[len - 1] &= 0x7F; /* clear continue bit */
+ sv_catpvn(cat, in, (result + len) - in);
+ Safefree(result);
+ SvREFCNT_dec(norm); /* free norm */
+ }
}
break;
case 'i':
|| (SvPADTMP(fromstr)
&& !SvREADONLY(fromstr))))
{
- Perl_warner(aTHX_ WARN_PACK,
+ Perl_warner(aTHX_ packWARN(WARN_PACK),
"Attempt to pack pointer to temporary value");
}
if (SvPOK(fromstr) || SvNIOK(fromstr))
break;
}
}
+ if (next_in_list)
+ *next_in_list = beglist;
+}
+#undef NEXTFROM
+
+
+PP(pp_pack)
+{
+ dSP; dMARK; dORIGMARK; dTARGET;
+ register SV *cat = TARG;
+ STRLEN fromlen;
+ register char *pat = SvPVx(*++MARK, fromlen);
+ register char *patend = pat + fromlen;
+
+ MARK++;
+ sv_setpvn(cat, "", 0);
+
+ pack_cat(cat, pat, patend, MARK, SP + 1, NULL, 0);
+
SvSETMAGIC(cat);
SP = ORIGMARK;
PUSHs(cat);
RETURN;
}
-#undef NEXTFROM
https://perl5.git.perl.org / perl5.git / blobdiff