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freebsd/contrib/perl5/sv.c

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Initial import of Perl5. The king is dead; long live the king!
1998-09-09 07:00:04 +00:00
/* sv.c
*
* Copyright (c) 1991-1997, Larry Wall
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
*/
/*
* "I wonder what the Entish is for 'yes' and 'no'," he thought.
*/
#include "EXTERN.h"
#include "perl.h"
#ifdef OVR_DBL_DIG
/* Use an overridden DBL_DIG */
# ifdef DBL_DIG
# undef DBL_DIG
# endif
# define DBL_DIG OVR_DBL_DIG
#else
/* The following is all to get DBL_DIG, in order to pick a nice
default value for printing floating point numbers in Gconvert.
(see config.h)
*/
#ifdef I_LIMITS
#include <limits.h>
#endif
#ifdef I_FLOAT
#include <float.h>
#endif
#ifndef HAS_DBL_DIG
#define DBL_DIG 15 /* A guess that works lots of places */
#endif
#endif
#if defined(USE_STDIO_PTR) && defined(STDIO_PTR_LVALUE) && defined(STDIO_CNT_LVALUE) && !defined(__QNX__)
# define FAST_SV_GETS
#endif
#ifdef PERL_OBJECT
#define FCALL this->*f
#define VTBL this->*vtbl
#else /* !PERL_OBJECT */
static IV asIV _((SV* sv));
static UV asUV _((SV* sv));
static SV *more_sv _((void));
static XPVIV *more_xiv _((void));
static XPVNV *more_xnv _((void));
static XPV *more_xpv _((void));
static XRV *more_xrv _((void));
static XPVIV *new_xiv _((void));
static XPVNV *new_xnv _((void));
static XPV *new_xpv _((void));
static XRV *new_xrv _((void));
static void del_xiv _((XPVIV* p));
static void del_xnv _((XPVNV* p));
static void del_xpv _((XPV* p));
static void del_xrv _((XRV* p));
static void sv_mortalgrow _((void));
static void sv_unglob _((SV* sv));
static void sv_check_thinkfirst _((SV *sv));
#ifndef PURIFY
static void *my_safemalloc(MEM_SIZE size);
#endif
typedef void (*SVFUNC) _((SV*));
#define VTBL *vtbl
#define FCALL *f
#endif /* PERL_OBJECT */
#define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) sv_check_thinkfirst(sv)
#ifdef PURIFY
#define new_SV(p) \
do { \
LOCK_SV_MUTEX; \
(p) = (SV*)safemalloc(sizeof(SV)); \
reg_add(p); \
UNLOCK_SV_MUTEX; \
} while (0)
#define del_SV(p) \
do { \
LOCK_SV_MUTEX; \
reg_remove(p); \
Safefree((char*)(p)); \
UNLOCK_SV_MUTEX; \
} while (0)
static SV **registry;
static I32 registry_size;
#define REGHASH(sv,size) ((((U32)(sv)) >> 2) % (size))
#define REG_REPLACE(sv,a,b) \
do { \
void* p = sv->sv_any; \
I32 h = REGHASH(sv, registry_size); \
I32 i = h; \
while (registry[i] != (a)) { \
if (++i >= registry_size) \
i = 0; \
if (i == h) \
die("SV registry bug"); \
} \
registry[i] = (b); \
} while (0)
#define REG_ADD(sv) REG_REPLACE(sv,Nullsv,sv)
#define REG_REMOVE(sv) REG_REPLACE(sv,sv,Nullsv)
static void
reg_add(sv)
SV* sv;
{
if (PL_sv_count >= (registry_size >> 1))
{
SV **oldreg = registry;
I32 oldsize = registry_size;
registry_size = registry_size ? ((registry_size << 2) + 1) : 2037;
Newz(707, registry, registry_size, SV*);
if (oldreg) {
I32 i;
for (i = 0; i < oldsize; ++i) {
SV* oldsv = oldreg[i];
if (oldsv)
REG_ADD(oldsv);
}
Safefree(oldreg);
}
}
REG_ADD(sv);
++PL_sv_count;
}
static void
reg_remove(sv)
SV* sv;
{
REG_REMOVE(sv);
--PL_sv_count;
}
static void
visit(f)
SVFUNC f;
{
I32 i;
for (i = 0; i < registry_size; ++i) {
SV* sv = registry[i];
if (sv && SvTYPE(sv) != SVTYPEMASK)
(*f)(sv);
}
}
void
sv_add_arena(ptr, size, flags)
char* ptr;
U32 size;
U32 flags;
{
if (!(flags & SVf_FAKE))
Safefree(ptr);
}
#else /* ! PURIFY */
/*
* "A time to plant, and a time to uproot what was planted..."
*/
#define plant_SV(p) \
do { \
SvANY(p) = (void *)PL_sv_root; \
SvFLAGS(p) = SVTYPEMASK; \
PL_sv_root = (p); \
--PL_sv_count; \
} while (0)
/* sv_mutex must be held while calling uproot_SV() */
#define uproot_SV(p) \
do { \
(p) = PL_sv_root; \
PL_sv_root = (SV*)SvANY(p); \
++PL_sv_count; \
} while (0)
#define new_SV(p) do { \
LOCK_SV_MUTEX; \
if (PL_sv_root) \
uproot_SV(p); \
else \
(p) = more_sv(); \
UNLOCK_SV_MUTEX; \
} while (0)
#ifdef DEBUGGING
#define del_SV(p) do { \
LOCK_SV_MUTEX; \
if (PL_debug & 32768) \
del_sv(p); \
else \
plant_SV(p); \
UNLOCK_SV_MUTEX; \
} while (0)
STATIC void
del_sv(SV *p)
{
if (PL_debug & 32768) {
SV* sva;
SV* sv;
SV* svend;
int ok = 0;
for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
sv = sva + 1;
svend = &sva[SvREFCNT(sva)];
if (p >= sv && p < svend)
ok = 1;
}
if (!ok) {
warn("Attempt to free non-arena SV: 0x%lx", (unsigned long)p);
return;
}
}
plant_SV(p);
}
#else /* ! DEBUGGING */
#define del_SV(p) plant_SV(p)
#endif /* DEBUGGING */
void
sv_add_arena(char *ptr, U32 size, U32 flags)
{
SV* sva = (SV*)ptr;
register SV* sv;
register SV* svend;
Zero(sva, size, char);
/* The first SV in an arena isn't an SV. */
SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */
SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
SvFLAGS(sva) = flags; /* FAKE if not to be freed */
PL_sv_arenaroot = sva;
PL_sv_root = sva + 1;
svend = &sva[SvREFCNT(sva) - 1];
sv = sva + 1;
while (sv < svend) {
SvANY(sv) = (void *)(SV*)(sv + 1);
SvFLAGS(sv) = SVTYPEMASK;
sv++;
}
SvANY(sv) = 0;
SvFLAGS(sv) = SVTYPEMASK;
}
/* sv_mutex must be held while calling more_sv() */
STATIC SV*
more_sv(void)
{
register SV* sv;
if (PL_nice_chunk) {
sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0);
PL_nice_chunk = Nullch;
}
else {
char *chunk; /* must use New here to match call to */
New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */
sv_add_arena(chunk, 1008, 0);
}
uproot_SV(sv);
return sv;
}
STATIC void
visit(SVFUNC f)
{
SV* sva;
SV* sv;
register SV* svend;
for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
svend = &sva[SvREFCNT(sva)];
for (sv = sva + 1; sv < svend; ++sv) {
if (SvTYPE(sv) != SVTYPEMASK)
(FCALL)(sv);
}
}
}
#endif /* PURIFY */
STATIC void
do_report_used(SV *sv)
{
if (SvTYPE(sv) != SVTYPEMASK) {
/* XXX Perhaps this ought to go to Perl_debug_log, if DEBUGGING. */
PerlIO_printf(PerlIO_stderr(), "****\n");
sv_dump(sv);
}
}
void
sv_report_used(void)
{
visit(FUNC_NAME_TO_PTR(do_report_used));
}
STATIC void
do_clean_objs(SV *sv)
{
SV* rv;
if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
SvROK_off(sv);
SvRV(sv) = 0;
SvREFCNT_dec(rv);
}
/* XXX Might want to check arrays, etc. */
}
#ifndef DISABLE_DESTRUCTOR_KLUDGE
STATIC void
do_clean_named_objs(SV *sv)
{
if (SvTYPE(sv) == SVt_PVGV) {
if ( SvOBJECT(GvSV(sv)) ||
GvAV(sv) && SvOBJECT(GvAV(sv)) ||
GvHV(sv) && SvOBJECT(GvHV(sv)) ||
GvIO(sv) && SvOBJECT(GvIO(sv)) ||
GvCV(sv) && SvOBJECT(GvCV(sv)) )
{
DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
SvREFCNT_dec(sv);
}
}
}
#endif
void
sv_clean_objs(void)
{
PL_in_clean_objs = TRUE;
visit(FUNC_NAME_TO_PTR(do_clean_objs));
#ifndef DISABLE_DESTRUCTOR_KLUDGE
/* some barnacles may yet remain, clinging to typeglobs */
visit(FUNC_NAME_TO_PTR(do_clean_named_objs));
#endif
PL_in_clean_objs = FALSE;
}
STATIC void
do_clean_all(SV *sv)
{
DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%lx\n", sv) );)
SvFLAGS(sv) |= SVf_BREAK;
SvREFCNT_dec(sv);
}
void
sv_clean_all(void)
{
PL_in_clean_all = TRUE;
visit(FUNC_NAME_TO_PTR(do_clean_all));
PL_in_clean_all = FALSE;
}
void
sv_free_arenas(void)
{
SV* sva;
SV* svanext;
/* Free arenas here, but be careful about fake ones. (We assume
contiguity of the fake ones with the corresponding real ones.) */
for (sva = PL_sv_arenaroot; sva; sva = svanext) {
svanext = (SV*) SvANY(sva);
while (svanext && SvFAKE(svanext))
svanext = (SV*) SvANY(svanext);
if (!SvFAKE(sva))
Safefree((void *)sva);
}
if (PL_nice_chunk)
Safefree(PL_nice_chunk);
PL_nice_chunk = Nullch;
PL_nice_chunk_size = 0;
PL_sv_arenaroot = 0;
PL_sv_root = 0;
}
STATIC XPVIV*
new_xiv(void)
{
IV* xiv;
if (PL_xiv_root) {
xiv = PL_xiv_root;
/*
* See comment in more_xiv() -- RAM.
*/
PL_xiv_root = *(IV**)xiv;
return (XPVIV*)((char*)xiv - STRUCT_OFFSET(XPVIV, xiv_iv));
}
return more_xiv();
}
STATIC void
del_xiv(XPVIV *p)
{
IV* xiv = (IV*)((char*)(p) + STRUCT_OFFSET(XPVIV, xiv_iv));
*(IV**)xiv = PL_xiv_root;
PL_xiv_root = xiv;
}
STATIC XPVIV*
more_xiv(void)
{
register IV* xiv;
register IV* xivend;
XPV* ptr;
New(705, ptr, 1008/sizeof(XPV), XPV);
ptr->xpv_pv = (char*)PL_xiv_arenaroot; /* linked list of xiv arenas */
PL_xiv_arenaroot = ptr; /* to keep Purify happy */
xiv = (IV*) ptr;
xivend = &xiv[1008 / sizeof(IV) - 1];
xiv += (sizeof(XPV) - 1) / sizeof(IV) + 1; /* fudge by size of XPV */
PL_xiv_root = xiv;
while (xiv < xivend) {
*(IV**)xiv = (IV *)(xiv + 1);
xiv++;
}
*(IV**)xiv = 0;
return new_xiv();
}
STATIC XPVNV*
new_xnv(void)
{
double* xnv;
if (PL_xnv_root) {
xnv = PL_xnv_root;
PL_xnv_root = *(double**)xnv;
return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv));
}
return more_xnv();
}
STATIC void
del_xnv(XPVNV *p)
{
double* xnv = (double*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv));
*(double**)xnv = PL_xnv_root;
PL_xnv_root = xnv;
}
STATIC XPVNV*
more_xnv(void)
{
register double* xnv;
register double* xnvend;
New(711, xnv, 1008/sizeof(double), double);
xnvend = &xnv[1008 / sizeof(double) - 1];
xnv += (sizeof(XPVIV) - 1) / sizeof(double) + 1; /* fudge by sizeof XPVIV */
PL_xnv_root = xnv;
while (xnv < xnvend) {
*(double**)xnv = (double*)(xnv + 1);
xnv++;
}
*(double**)xnv = 0;
return new_xnv();
}
STATIC XRV*
new_xrv(void)
{
XRV* xrv;
if (PL_xrv_root) {
xrv = PL_xrv_root;
PL_xrv_root = (XRV*)xrv->xrv_rv;
return xrv;
}
return more_xrv();
}
STATIC void
del_xrv(XRV *p)
{
p->xrv_rv = (SV*)PL_xrv_root;
PL_xrv_root = p;
}
STATIC XRV*
more_xrv(void)
{
register XRV* xrv;
register XRV* xrvend;
New(712, PL_xrv_root, 1008/sizeof(XRV), XRV);
xrv = PL_xrv_root;
xrvend = &xrv[1008 / sizeof(XRV) - 1];
while (xrv < xrvend) {
xrv->xrv_rv = (SV*)(xrv + 1);
xrv++;
}
xrv->xrv_rv = 0;
return new_xrv();
}
STATIC XPV*
new_xpv(void)
{
XPV* xpv;
if (PL_xpv_root) {
xpv = PL_xpv_root;
PL_xpv_root = (XPV*)xpv->xpv_pv;
return xpv;
}
return more_xpv();
}
STATIC void
del_xpv(XPV *p)
{
p->xpv_pv = (char*)PL_xpv_root;
PL_xpv_root = p;
}
STATIC XPV*
more_xpv(void)
{
register XPV* xpv;
register XPV* xpvend;
New(713, PL_xpv_root, 1008/sizeof(XPV), XPV);
xpv = PL_xpv_root;
xpvend = &xpv[1008 / sizeof(XPV) - 1];
while (xpv < xpvend) {
xpv->xpv_pv = (char*)(xpv + 1);
xpv++;
}
xpv->xpv_pv = 0;
return new_xpv();
}
#ifdef PURIFY
#define new_XIV() (void*)safemalloc(sizeof(XPVIV))
#define del_XIV(p) Safefree((char*)p)
#else
#define new_XIV() (void*)new_xiv()
#define del_XIV(p) del_xiv((XPVIV*) p)
#endif
#ifdef PURIFY
#define new_XNV() (void*)safemalloc(sizeof(XPVNV))
#define del_XNV(p) Safefree((char*)p)
#else
#define new_XNV() (void*)new_xnv()
#define del_XNV(p) del_xnv((XPVNV*) p)
#endif
#ifdef PURIFY
#define new_XRV() (void*)safemalloc(sizeof(XRV))
#define del_XRV(p) Safefree((char*)p)
#else
#define new_XRV() (void*)new_xrv()
#define del_XRV(p) del_xrv((XRV*) p)
#endif
#ifdef PURIFY
#define new_XPV() (void*)safemalloc(sizeof(XPV))
#define del_XPV(p) Safefree((char*)p)
#else
#define new_XPV() (void*)new_xpv()
#define del_XPV(p) del_xpv((XPV *)p)
#endif
#ifdef PURIFY
# define my_safemalloc(s) safemalloc(s)
# define my_safefree(s) free(s)
#else
STATIC void*
my_safemalloc(MEM_SIZE size)
{
char *p;
New(717, p, size, char);
return (void*)p;
}
# define my_safefree(s) Safefree(s)
#endif
#define new_XPVIV() (void*)my_safemalloc(sizeof(XPVIV))
#define del_XPVIV(p) my_safefree((char*)p)
#define new_XPVNV() (void*)my_safemalloc(sizeof(XPVNV))
#define del_XPVNV(p) my_safefree((char*)p)
#define new_XPVMG() (void*)my_safemalloc(sizeof(XPVMG))
#define del_XPVMG(p) my_safefree((char*)p)
#define new_XPVLV() (void*)my_safemalloc(sizeof(XPVLV))
#define del_XPVLV(p) my_safefree((char*)p)
#define new_XPVAV() (void*)my_safemalloc(sizeof(XPVAV))
#define del_XPVAV(p) my_safefree((char*)p)
#define new_XPVHV() (void*)my_safemalloc(sizeof(XPVHV))
#define del_XPVHV(p) my_safefree((char*)p)
#define new_XPVCV() (void*)my_safemalloc(sizeof(XPVCV))
#define del_XPVCV(p) my_safefree((char*)p)
#define new_XPVGV() (void*)my_safemalloc(sizeof(XPVGV))
#define del_XPVGV(p) my_safefree((char*)p)
#define new_XPVBM() (void*)my_safemalloc(sizeof(XPVBM))
#define del_XPVBM(p) my_safefree((char*)p)
#define new_XPVFM() (void*)my_safemalloc(sizeof(XPVFM))
#define del_XPVFM(p) my_safefree((char*)p)
#define new_XPVIO() (void*)my_safemalloc(sizeof(XPVIO))
#define del_XPVIO(p) my_safefree((char*)p)
bool
sv_upgrade(register SV *sv, U32 mt)
{
char* pv;
U32 cur;
U32 len;
IV iv;
double nv;
MAGIC* magic;
HV* stash;
if (SvTYPE(sv) == mt)
return TRUE;
if (mt < SVt_PVIV)
(void)SvOOK_off(sv);
switch (SvTYPE(sv)) {
case SVt_NULL:
pv = 0;
cur = 0;
len = 0;
iv = 0;
nv = 0.0;
magic = 0;
stash = 0;
break;
case SVt_IV:
pv = 0;
cur = 0;
len = 0;
iv = SvIVX(sv);
nv = (double)SvIVX(sv);
del_XIV(SvANY(sv));
magic = 0;
stash = 0;
if (mt == SVt_NV)
mt = SVt_PVNV;
else if (mt < SVt_PVIV)
mt = SVt_PVIV;
break;
case SVt_NV:
pv = 0;
cur = 0;
len = 0;
nv = SvNVX(sv);
iv = I_32(nv);
magic = 0;
stash = 0;
del_XNV(SvANY(sv));
SvANY(sv) = 0;
if (mt < SVt_PVNV)
mt = SVt_PVNV;
break;
case SVt_RV:
pv = (char*)SvRV(sv);
cur = 0;
len = 0;
iv = (IV)pv;
nv = (double)(unsigned long)pv;
del_XRV(SvANY(sv));
magic = 0;
stash = 0;
break;
case SVt_PV:
pv = SvPVX(sv);
cur = SvCUR(sv);
len = SvLEN(sv);
iv = 0;
nv = 0.0;
magic = 0;
stash = 0;
del_XPV(SvANY(sv));
if (mt <= SVt_IV)
mt = SVt_PVIV;
else if (mt == SVt_NV)
mt = SVt_PVNV;
break;
case SVt_PVIV:
pv = SvPVX(sv);
cur = SvCUR(sv);
len = SvLEN(sv);
iv = SvIVX(sv);
nv = 0.0;
magic = 0;
stash = 0;
del_XPVIV(SvANY(sv));
break;
case SVt_PVNV:
pv = SvPVX(sv);
cur = SvCUR(sv);
len = SvLEN(sv);
iv = SvIVX(sv);
nv = SvNVX(sv);
magic = 0;
stash = 0;
del_XPVNV(SvANY(sv));
break;
case SVt_PVMG:
pv = SvPVX(sv);
cur = SvCUR(sv);
len = SvLEN(sv);
iv = SvIVX(sv);
nv = SvNVX(sv);
magic = SvMAGIC(sv);
stash = SvSTASH(sv);
del_XPVMG(SvANY(sv));
break;
default:
croak("Can't upgrade that kind of scalar");
}
switch (mt) {
case SVt_NULL:
croak("Can't upgrade to undef");
case SVt_IV:
SvANY(sv) = new_XIV();
SvIVX(sv) = iv;
break;
case SVt_NV:
SvANY(sv) = new_XNV();
SvNVX(sv) = nv;
break;
case SVt_RV:
SvANY(sv) = new_XRV();
SvRV(sv) = (SV*)pv;
break;
case SVt_PV:
SvANY(sv) = new_XPV();
SvPVX(sv) = pv;
SvCUR(sv) = cur;
SvLEN(sv) = len;
break;
case SVt_PVIV:
SvANY(sv) = new_XPVIV();
SvPVX(sv) = pv;
SvCUR(sv) = cur;
SvLEN(sv) = len;
SvIVX(sv) = iv;
if (SvNIOK(sv))
(void)SvIOK_on(sv);
SvNOK_off(sv);
break;
case SVt_PVNV:
SvANY(sv) = new_XPVNV();
SvPVX(sv) = pv;
SvCUR(sv) = cur;
SvLEN(sv) = len;
SvIVX(sv) = iv;
SvNVX(sv) = nv;
break;
case SVt_PVMG:
SvANY(sv) = new_XPVMG();
SvPVX(sv) = pv;
SvCUR(sv) = cur;
SvLEN(sv) = len;
SvIVX(sv) = iv;
SvNVX(sv) = nv;
SvMAGIC(sv) = magic;
SvSTASH(sv) = stash;
break;
case SVt_PVLV:
SvANY(sv) = new_XPVLV();
SvPVX(sv) = pv;
SvCUR(sv) = cur;
SvLEN(sv) = len;
SvIVX(sv) = iv;
SvNVX(sv) = nv;
SvMAGIC(sv) = magic;
SvSTASH(sv) = stash;
LvTARGOFF(sv) = 0;
LvTARGLEN(sv) = 0;
LvTARG(sv) = 0;
LvTYPE(sv) = 0;
break;
case SVt_PVAV:
SvANY(sv) = new_XPVAV();
if (pv)
Safefree(pv);
SvPVX(sv) = 0;
AvMAX(sv) = -1;
AvFILLp(sv) = -1;
SvIVX(sv) = 0;
SvNVX(sv) = 0.0;
SvMAGIC(sv) = magic;
SvSTASH(sv) = stash;
AvALLOC(sv) = 0;
AvARYLEN(sv) = 0;
AvFLAGS(sv) = 0;
break;
case SVt_PVHV:
SvANY(sv) = new_XPVHV();
if (pv)
Safefree(pv);
SvPVX(sv) = 0;
HvFILL(sv) = 0;
HvMAX(sv) = 0;
HvKEYS(sv) = 0;
SvNVX(sv) = 0.0;
SvMAGIC(sv) = magic;
SvSTASH(sv) = stash;
HvRITER(sv) = 0;
HvEITER(sv) = 0;
HvPMROOT(sv) = 0;
HvNAME(sv) = 0;
break;
case SVt_PVCV:
SvANY(sv) = new_XPVCV();
Zero(SvANY(sv), 1, XPVCV);
SvPVX(sv) = pv;
SvCUR(sv) = cur;
SvLEN(sv) = len;
SvIVX(sv) = iv;
SvNVX(sv) = nv;
SvMAGIC(sv) = magic;
SvSTASH(sv) = stash;
break;
case SVt_PVGV:
SvANY(sv) = new_XPVGV();
SvPVX(sv) = pv;
SvCUR(sv) = cur;
SvLEN(sv) = len;
SvIVX(sv) = iv;
SvNVX(sv) = nv;
SvMAGIC(sv) = magic;
SvSTASH(sv) = stash;
GvGP(sv) = 0;
GvNAME(sv) = 0;
GvNAMELEN(sv) = 0;
GvSTASH(sv) = 0;
GvFLAGS(sv) = 0;
break;
case SVt_PVBM:
SvANY(sv) = new_XPVBM();
SvPVX(sv) = pv;
SvCUR(sv) = cur;
SvLEN(sv) = len;
SvIVX(sv) = iv;
SvNVX(sv) = nv;
SvMAGIC(sv) = magic;
SvSTASH(sv) = stash;
BmRARE(sv) = 0;
BmUSEFUL(sv) = 0;
BmPREVIOUS(sv) = 0;
break;
case SVt_PVFM:
SvANY(sv) = new_XPVFM();
Zero(SvANY(sv), 1, XPVFM);
SvPVX(sv) = pv;
SvCUR(sv) = cur;
SvLEN(sv) = len;
SvIVX(sv) = iv;
SvNVX(sv) = nv;
SvMAGIC(sv) = magic;
SvSTASH(sv) = stash;
break;
case SVt_PVIO:
SvANY(sv) = new_XPVIO();
Zero(SvANY(sv), 1, XPVIO);
SvPVX(sv) = pv;
SvCUR(sv) = cur;
SvLEN(sv) = len;
SvIVX(sv) = iv;
SvNVX(sv) = nv;
SvMAGIC(sv) = magic;
SvSTASH(sv) = stash;
IoPAGE_LEN(sv) = 60;
break;
}
SvFLAGS(sv) &= ~SVTYPEMASK;
SvFLAGS(sv) |= mt;
return TRUE;
}
char *
sv_peek(SV *sv)
{
#ifdef DEBUGGING
SV *t = sv_newmortal();
STRLEN prevlen;
int unref = 0;
sv_setpvn(t, "", 0);
retry:
if (!sv) {
sv_catpv(t, "VOID");
goto finish;
}
else if (sv == (SV*)0x55555555 || SvTYPE(sv) == 'U') {
sv_catpv(t, "WILD");
goto finish;
}
else if (sv == &PL_sv_undef || sv == &PL_sv_no || sv == &PL_sv_yes) {
if (sv == &PL_sv_undef) {
sv_catpv(t, "SV_UNDEF");
if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
SVs_GMG|SVs_SMG|SVs_RMG)) &&
SvREADONLY(sv))
goto finish;
}
else if (sv == &PL_sv_no) {
sv_catpv(t, "SV_NO");
if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
SVs_GMG|SVs_SMG|SVs_RMG)) &&
!(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
SVp_POK|SVp_NOK)) &&
SvCUR(sv) == 0 &&
SvNVX(sv) == 0.0)
goto finish;
}
else {
sv_catpv(t, "SV_YES");
if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
SVs_GMG|SVs_SMG|SVs_RMG)) &&
!(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
SVp_POK|SVp_NOK)) &&
SvCUR(sv) == 1 &&
SvPVX(sv) && *SvPVX(sv) == '1' &&
SvNVX(sv) == 1.0)
goto finish;
}
sv_catpv(t, ":");
}
else if (SvREFCNT(sv) == 0) {
sv_catpv(t, "(");
unref++;
}
if (SvROK(sv)) {
sv_catpv(t, "\\");
if (SvCUR(t) + unref > 10) {
SvCUR(t) = unref + 3;
*SvEND(t) = '\0';
sv_catpv(t, "...");
goto finish;
}
sv = (SV*)SvRV(sv);
goto retry;
}
switch (SvTYPE(sv)) {
default:
sv_catpv(t, "FREED");
goto finish;
case SVt_NULL:
sv_catpv(t, "UNDEF");
goto finish;
case SVt_IV:
sv_catpv(t, "IV");
break;
case SVt_NV:
sv_catpv(t, "NV");
break;
case SVt_RV:
sv_catpv(t, "RV");
break;
case SVt_PV:
sv_catpv(t, "PV");
break;
case SVt_PVIV:
sv_catpv(t, "PVIV");
break;
case SVt_PVNV:
sv_catpv(t, "PVNV");
break;
case SVt_PVMG:
sv_catpv(t, "PVMG");
break;
case SVt_PVLV:
sv_catpv(t, "PVLV");
break;
case SVt_PVAV:
sv_catpv(t, "AV");
break;
case SVt_PVHV:
sv_catpv(t, "HV");
break;
case SVt_PVCV:
if (CvGV(sv))
sv_catpvf(t, "CV(%s)", GvNAME(CvGV(sv)));
else
sv_catpv(t, "CV()");
goto finish;
case SVt_PVGV:
sv_catpv(t, "GV");
break;
case SVt_PVBM:
sv_catpv(t, "BM");
break;
case SVt_PVFM:
sv_catpv(t, "FM");
break;
case SVt_PVIO:
sv_catpv(t, "IO");
break;
}
if (SvPOKp(sv)) {
if (!SvPVX(sv))
sv_catpv(t, "(null)");
if (SvOOK(sv))
sv_catpvf(t, "(%ld+\"%.127s\")",(long)SvIVX(sv),SvPVX(sv));
else
sv_catpvf(t, "(\"%.127s\")",SvPVX(sv));
}
else if (SvNOKp(sv)) {
SET_NUMERIC_STANDARD();
sv_catpvf(t, "(%g)",SvNVX(sv));
}
else if (SvIOKp(sv))
sv_catpvf(t, "(%ld)",(long)SvIVX(sv));
else
sv_catpv(t, "()");
finish:
if (unref) {
while (unref--)
sv_catpv(t, ")");
}
return SvPV(t, PL_na);
#else /* DEBUGGING */
return "";
#endif /* DEBUGGING */
}
int
sv_backoff(register SV *sv)
{
assert(SvOOK(sv));
if (SvIVX(sv)) {
char *s = SvPVX(sv);
SvLEN(sv) += SvIVX(sv);
SvPVX(sv) -= SvIVX(sv);
SvIV_set(sv, 0);
Move(s, SvPVX(sv), SvCUR(sv)+1, char);
}
SvFLAGS(sv) &= ~SVf_OOK;
return 0;
}
char *
#ifndef DOSISH
sv_grow(register SV *sv, register I32 newlen)
#else
sv_grow(SV* sv, unsigned long newlen)
#endif
{
register char *s;
#ifdef HAS_64K_LIMIT
if (newlen >= 0x10000) {
PerlIO_printf(Perl_debug_log, "Allocation too large: %lx\n", newlen);
my_exit(1);
}
#endif /* HAS_64K_LIMIT */
if (SvROK(sv))
sv_unref(sv);
if (SvTYPE(sv) < SVt_PV) {
sv_upgrade(sv, SVt_PV);
s = SvPVX(sv);
}
else if (SvOOK(sv)) { /* pv is offset? */
sv_backoff(sv);
s = SvPVX(sv);
if (newlen > SvLEN(sv))
newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
#ifdef HAS_64K_LIMIT
if (newlen >= 0x10000)
newlen = 0xFFFF;
#endif
}
else
s = SvPVX(sv);
if (newlen > SvLEN(sv)) { /* need more room? */
if (SvLEN(sv) && s) {
#if defined(MYMALLOC) && !defined(PURIFY) && !defined(LEAKTEST)
STRLEN l = malloced_size((void*)SvPVX(sv));
if (newlen <= l) {
SvLEN_set(sv, l);
return s;
} else
#endif
Renew(s,newlen,char);
}
else
New(703,s,newlen,char);
SvPV_set(sv, s);
SvLEN_set(sv, newlen);
}
return s;
}
void
sv_setiv(register SV *sv, IV i)
{
SV_CHECK_THINKFIRST(sv);
switch (SvTYPE(sv)) {
case SVt_NULL:
sv_upgrade(sv, SVt_IV);
break;
case SVt_NV:
sv_upgrade(sv, SVt_PVNV);
break;
case SVt_RV:
case SVt_PV:
sv_upgrade(sv, SVt_PVIV);
break;
case SVt_PVGV:
if (SvFAKE(sv)) {
sv_unglob(sv);
break;
}
/* FALL THROUGH */
case SVt_PVAV:
case SVt_PVHV:
case SVt_PVCV:
case SVt_PVFM:
case SVt_PVIO:
{
dTHR;
croak("Can't coerce %s to integer in %s", sv_reftype(sv,0),
op_desc[PL_op->op_type]);
}
}
(void)SvIOK_only(sv); /* validate number */
SvIVX(sv) = i;
SvTAINT(sv);
}
void
sv_setiv_mg(register SV *sv, IV i)
{
sv_setiv(sv,i);
SvSETMAGIC(sv);
}
void
sv_setuv(register SV *sv, UV u)
{
if (u <= IV_MAX)
sv_setiv(sv, u);
else
sv_setnv(sv, (double)u);
}
void
sv_setuv_mg(register SV *sv, UV u)
{
sv_setuv(sv,u);
SvSETMAGIC(sv);
}
void
sv_setnv(register SV *sv, double num)
{
SV_CHECK_THINKFIRST(sv);
switch (SvTYPE(sv)) {
case SVt_NULL:
case SVt_IV:
sv_upgrade(sv, SVt_NV);
break;
case SVt_RV:
case SVt_PV:
case SVt_PVIV:
sv_upgrade(sv, SVt_PVNV);
break;
case SVt_PVGV:
if (SvFAKE(sv)) {
sv_unglob(sv);
break;
}
/* FALL THROUGH */
case SVt_PVAV:
case SVt_PVHV:
case SVt_PVCV:
case SVt_PVFM:
case SVt_PVIO:
{
dTHR;
croak("Can't coerce %s to number in %s", sv_reftype(sv,0),
op_name[PL_op->op_type]);
}
}
SvNVX(sv) = num;
(void)SvNOK_only(sv); /* validate number */
SvTAINT(sv);
}
void
sv_setnv_mg(register SV *sv, double num)
{
sv_setnv(sv,num);
SvSETMAGIC(sv);
}
STATIC void
not_a_number(SV *sv)
{
dTHR;
char tmpbuf[64];
char *d = tmpbuf;
char *s;
char *limit = tmpbuf + sizeof(tmpbuf) - 8;
/* each *s can expand to 4 chars + "...\0",
i.e. need room for 8 chars */
for (s = SvPVX(sv); *s && d < limit; s++) {
int ch = *s & 0xFF;
if (ch & 128 && !isPRINT_LC(ch)) {
*d++ = 'M';
*d++ = '-';
ch &= 127;
}
if (ch == '\n') {
*d++ = '\\';
*d++ = 'n';
}
else if (ch == '\r') {
*d++ = '\\';
*d++ = 'r';
}
else if (ch == '\f') {
*d++ = '\\';
*d++ = 'f';
}
else if (ch == '\\') {
*d++ = '\\';
*d++ = '\\';
}
else if (isPRINT_LC(ch))
*d++ = ch;
else {
*d++ = '^';
*d++ = toCTRL(ch);
}
}
if (*s) {
*d++ = '.';
*d++ = '.';
*d++ = '.';
}
*d = '\0';
if (PL_op)
warn("Argument \"%s\" isn't numeric in %s", tmpbuf,
op_name[PL_op->op_type]);
else
warn("Argument \"%s\" isn't numeric", tmpbuf);
}
IV
sv_2iv(register SV *sv)
{
if (!sv)
return 0;
if (SvGMAGICAL(sv)) {
mg_get(sv);
if (SvIOKp(sv))
return SvIVX(sv);
if (SvNOKp(sv)) {
if (SvNVX(sv) < 0.0)
return I_V(SvNVX(sv));
else
return (IV) U_V(SvNVX(sv));
}
if (SvPOKp(sv) && SvLEN(sv))
return asIV(sv);
if (!SvROK(sv)) {
if (PL_dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
dTHR;
if (!PL_localizing)
warn(warn_uninit);
}
return 0;
}
}
if (SvTHINKFIRST(sv)) {
if (SvROK(sv)) {
#ifdef OVERLOAD
SV* tmpstr;
if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
return SvIV(tmpstr);
#endif /* OVERLOAD */
return (IV)SvRV(sv);
}
if (SvREADONLY(sv)) {
if (SvNOKp(sv)) {
if (SvNVX(sv) < 0.0)
return I_V(SvNVX(sv));
else
return (IV) U_V(SvNVX(sv));
}
if (SvPOKp(sv) && SvLEN(sv))
return asIV(sv);
if (PL_dowarn)
warn(warn_uninit);
return 0;
}
}
switch (SvTYPE(sv)) {
case SVt_NULL:
sv_upgrade(sv, SVt_IV);
break;
case SVt_PV:
sv_upgrade(sv, SVt_PVIV);
break;
case SVt_NV:
sv_upgrade(sv, SVt_PVNV);
break;
}
if (SvNOKp(sv)) {
(void)SvIOK_on(sv);
if (SvNVX(sv) < 0.0)
SvIVX(sv) = I_V(SvNVX(sv));
else
SvUVX(sv) = U_V(SvNVX(sv));
}
else if (SvPOKp(sv) && SvLEN(sv)) {
(void)SvIOK_on(sv);
SvIVX(sv) = asIV(sv);
}
else {
dTHR;
if (PL_dowarn && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
warn(warn_uninit);
return 0;
}
DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2iv(%ld)\n",
(unsigned long)sv,(long)SvIVX(sv)));
return SvIVX(sv);
}
UV
sv_2uv(register SV *sv)
{
if (!sv)
return 0;
if (SvGMAGICAL(sv)) {
mg_get(sv);
if (SvIOKp(sv))
return SvUVX(sv);
if (SvNOKp(sv))
return U_V(SvNVX(sv));
if (SvPOKp(sv) && SvLEN(sv))
return asUV(sv);
if (!SvROK(sv)) {
if (PL_dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
dTHR;
if (!PL_localizing)
warn(warn_uninit);
}
return 0;
}
}
if (SvTHINKFIRST(sv)) {
if (SvROK(sv)) {
#ifdef OVERLOAD
SV* tmpstr;
if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
return SvUV(tmpstr);
#endif /* OVERLOAD */
return (UV)SvRV(sv);
}
if (SvREADONLY(sv)) {
if (SvNOKp(sv)) {
return U_V(SvNVX(sv));
}
if (SvPOKp(sv) && SvLEN(sv))
return asUV(sv);
if (PL_dowarn)
warn(warn_uninit);
return 0;
}
}
switch (SvTYPE(sv)) {
case SVt_NULL:
sv_upgrade(sv, SVt_IV);
break;
case SVt_PV:
sv_upgrade(sv, SVt_PVIV);
break;
case SVt_NV:
sv_upgrade(sv, SVt_PVNV);
break;
}
if (SvNOKp(sv)) {
(void)SvIOK_on(sv);
SvUVX(sv) = U_V(SvNVX(sv));
}
else if (SvPOKp(sv) && SvLEN(sv)) {
(void)SvIOK_on(sv);
SvUVX(sv) = asUV(sv);
}
else {
if (PL_dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
dTHR;
if (!PL_localizing)
warn(warn_uninit);
}
return 0;
}
DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2uv(%lu)\n",
(unsigned long)sv,SvUVX(sv)));
return SvUVX(sv);
}
double
sv_2nv(register SV *sv)
{
if (!sv)
return 0.0;
if (SvGMAGICAL(sv)) {
mg_get(sv);
if (SvNOKp(sv))
return SvNVX(sv);
if (SvPOKp(sv) && SvLEN(sv)) {
if (PL_dowarn && !SvIOKp(sv) && !looks_like_number(sv))
not_a_number(sv);
SET_NUMERIC_STANDARD();
return atof(SvPVX(sv));
}
if (SvIOKp(sv))
return (double)SvIVX(sv);
if (!SvROK(sv)) {
if (PL_dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
dTHR;
if (!PL_localizing)
warn(warn_uninit);
}
return 0;
}
}
if (SvTHINKFIRST(sv)) {
if (SvROK(sv)) {
#ifdef OVERLOAD
SV* tmpstr;
if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)))
return SvNV(tmpstr);
#endif /* OVERLOAD */
return (double)(unsigned long)SvRV(sv);
}
if (SvREADONLY(sv)) {
if (SvPOKp(sv) && SvLEN(sv)) {
if (PL_dowarn && !SvIOKp(sv) && !looks_like_number(sv))
not_a_number(sv);
SET_NUMERIC_STANDARD();
return atof(SvPVX(sv));
}
if (SvIOKp(sv))
return (double)SvIVX(sv);
if (PL_dowarn)
warn(warn_uninit);
return 0.0;
}
}
if (SvTYPE(sv) < SVt_NV) {
if (SvTYPE(sv) == SVt_IV)
sv_upgrade(sv, SVt_PVNV);
else
sv_upgrade(sv, SVt_NV);
DEBUG_c(SET_NUMERIC_STANDARD());
DEBUG_c(PerlIO_printf(Perl_debug_log,
"0x%lx num(%g)\n",(unsigned long)sv,SvNVX(sv)));
}
else if (SvTYPE(sv) < SVt_PVNV)
sv_upgrade(sv, SVt_PVNV);
if (SvIOKp(sv) &&
(!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
{
SvNVX(sv) = (double)SvIVX(sv);
}
else if (SvPOKp(sv) && SvLEN(sv)) {
if (PL_dowarn && !SvIOKp(sv) && !looks_like_number(sv))
not_a_number(sv);
SET_NUMERIC_STANDARD();
SvNVX(sv) = atof(SvPVX(sv));
}
else {
dTHR;
if (PL_dowarn && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
warn(warn_uninit);
return 0.0;
}
SvNOK_on(sv);
DEBUG_c(SET_NUMERIC_STANDARD());
DEBUG_c(PerlIO_printf(Perl_debug_log,
"0x%lx 2nv(%g)\n",(unsigned long)sv,SvNVX(sv)));
return SvNVX(sv);
}
STATIC IV
asIV(SV *sv)
{
I32 numtype = looks_like_number(sv);
double d;
if (numtype == 1)
return atol(SvPVX(sv));
if (!numtype && PL_dowarn)
not_a_number(sv);
SET_NUMERIC_STANDARD();
d = atof(SvPVX(sv));
if (d < 0.0)
return I_V(d);
else
return (IV) U_V(d);
}
STATIC UV
asUV(SV *sv)
{
I32 numtype = looks_like_number(sv);
#ifdef HAS_STRTOUL
if (numtype == 1)
return strtoul(SvPVX(sv), Null(char**), 10);
#endif
if (!numtype && PL_dowarn)
not_a_number(sv);
SET_NUMERIC_STANDARD();
return U_V(atof(SvPVX(sv)));
}
I32
looks_like_number(SV *sv)
{
register char *s;
register char *send;
register char *sbegin;
I32 numtype;
STRLEN len;
if (SvPOK(sv)) {
sbegin = SvPVX(sv);
len = SvCUR(sv);
}
else if (SvPOKp(sv))
sbegin = SvPV(sv, len);
else
return 1;
send = sbegin + len;
s = sbegin;
while (isSPACE(*s))
s++;
if (*s == '+' || *s == '-')
s++;
/* next must be digit or '.' */
if (isDIGIT(*s)) {
do {
s++;
} while (isDIGIT(*s));
if (*s == '.') {
s++;
while (isDIGIT(*s)) /* optional digits after "." */
s++;
}
}
else if (*s == '.') {
s++;
/* no digits before '.' means we need digits after it */
if (isDIGIT(*s)) {
do {
s++;
} while (isDIGIT(*s));
}
else
return 0;
}
else
return 0;
/*
* we return 1 if the number can be converted to _integer_ with atol()
* and 2 if you need (int)atof().
*/
numtype = 1;
/* we can have an optional exponent part */
if (*s == 'e' || *s == 'E') {
numtype = 2;
s++;
if (*s == '+' || *s == '-')
s++;
if (isDIGIT(*s)) {
do {
s++;
} while (isDIGIT(*s));
}
else
return 0;
}
while (isSPACE(*s))
s++;
if (s >= send)
return numtype;
if (len == 10 && memEQ(sbegin, "0 but true", 10))
return 1;
return 0;
}
char *
sv_2pv(register SV *sv, STRLEN *lp)
{
register char *s;
int olderrno;
SV *tsv;
char tmpbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
if (!sv) {
*lp = 0;
return "";
}
if (SvGMAGICAL(sv)) {
mg_get(sv);
if (SvPOKp(sv)) {
*lp = SvCUR(sv);
return SvPVX(sv);
}
if (SvIOKp(sv)) {
(void)sprintf(tmpbuf,"%ld",(long)SvIVX(sv));
tsv = Nullsv;
goto tokensave;
}
if (SvNOKp(sv)) {
SET_NUMERIC_STANDARD();
Gconvert(SvNVX(sv), DBL_DIG, 0, tmpbuf);
tsv = Nullsv;
goto tokensave;
}
if (!SvROK(sv)) {
if (PL_dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
dTHR;
if (!PL_localizing)
warn(warn_uninit);
}
*lp = 0;
return "";
}
}
if (SvTHINKFIRST(sv)) {
if (SvROK(sv)) {
#ifdef OVERLOAD
SV* tmpstr;
if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)))
return SvPV(tmpstr,*lp);
#endif /* OVERLOAD */
sv = (SV*)SvRV(sv);
if (!sv)
s = "NULLREF";
else {
MAGIC *mg;
switch (SvTYPE(sv)) {
case SVt_PVMG:
if ( ((SvFLAGS(sv) &
(SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
== (SVs_OBJECT|SVs_RMG))
&& strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
&& (mg = mg_find(sv, 'r'))) {
dTHR;
regexp *re = (regexp *)mg->mg_obj;
if (!mg->mg_ptr) {
char *fptr = "msix";
char reflags[6];
char ch;
int left = 0;
int right = 4;
U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
while(ch = *fptr++) {
if(reganch & 1) {
reflags[left++] = ch;
}
else {
reflags[right--] = ch;
}
reganch >>= 1;
}
if(left != 4) {
reflags[left] = '-';
left = 5;
}
mg->mg_len = re->prelen + 4 + left;
New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
Copy("(?", mg->mg_ptr, 2, char);
Copy(reflags, mg->mg_ptr+2, left, char);
Copy(":", mg->mg_ptr+left+2, 1, char);
Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
mg->mg_ptr[mg->mg_len - 1] = ')';
mg->mg_ptr[mg->mg_len] = 0;
}
PL_reginterp_cnt += re->program[0].next_off;
*lp = mg->mg_len;
return mg->mg_ptr;
}
/* Fall through */
case SVt_NULL:
case SVt_IV:
case SVt_NV:
case SVt_RV:
case SVt_PV:
case SVt_PVIV:
case SVt_PVNV:
case SVt_PVBM: s = "SCALAR"; break;
case SVt_PVLV: s = "LVALUE"; break;
case SVt_PVAV: s = "ARRAY"; break;
case SVt_PVHV: s = "HASH"; break;
case SVt_PVCV: s = "CODE"; break;
case SVt_PVGV: s = "GLOB"; break;
case SVt_PVFM: s = "FORMAT"; break;
case SVt_PVIO: s = "IO"; break;
default: s = "UNKNOWN"; break;
}
tsv = NEWSV(0,0);
if (SvOBJECT(sv))
sv_setpvf(tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
else
sv_setpv(tsv, s);
sv_catpvf(tsv, "(0x%lx)", (unsigned long)sv);
goto tokensaveref;
}
*lp = strlen(s);
return s;
}
if (SvREADONLY(sv)) {
if (SvNOKp(sv)) {
SET_NUMERIC_STANDARD();
Gconvert(SvNVX(sv), DBL_DIG, 0, tmpbuf);
tsv = Nullsv;
goto tokensave;
}
if (SvIOKp(sv)) {
(void)sprintf(tmpbuf,"%ld",(long)SvIVX(sv));
tsv = Nullsv;
goto tokensave;
}
if (PL_dowarn)
warn(warn_uninit);
*lp = 0;
return "";
}
}
(void)SvUPGRADE(sv, SVt_PV);
if (SvNOKp(sv)) {
if (SvTYPE(sv) < SVt_PVNV)
sv_upgrade(sv, SVt_PVNV);
SvGROW(sv, 28);
s = SvPVX(sv);
olderrno = errno; /* some Xenix systems wipe out errno here */
#ifdef apollo
if (SvNVX(sv) == 0.0)
(void)strcpy(s,"0");
else
#endif /*apollo*/
{
SET_NUMERIC_STANDARD();
Gconvert(SvNVX(sv), DBL_DIG, 0, s);
}
errno = olderrno;
#ifdef FIXNEGATIVEZERO
if (*s == '-' && s[1] == '0' && !s[2])
strcpy(s,"0");
#endif
while (*s) s++;
#ifdef hcx
if (s[-1] == '.')
*--s = '\0';
#endif
}
else if (SvIOKp(sv)) {
U32 oldIOK = SvIOK(sv);
if (SvTYPE(sv) < SVt_PVIV)
sv_upgrade(sv, SVt_PVIV);
olderrno = errno; /* some Xenix systems wipe out errno here */
sv_setpviv(sv, SvIVX(sv));
errno = olderrno;
s = SvEND(sv);
if (oldIOK)
SvIOK_on(sv);
else
SvIOKp_on(sv);
}
else {
dTHR;
if (PL_dowarn && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
warn(warn_uninit);
*lp = 0;
return "";
}
*lp = s - SvPVX(sv);
SvCUR_set(sv, *lp);
SvPOK_on(sv);
DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2pv(%s)\n",(unsigned long)sv,SvPVX(sv)));
return SvPVX(sv);
tokensave:
if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
/* Sneaky stuff here */
tokensaveref:
if (!tsv)
tsv = newSVpv(tmpbuf, 0);
sv_2mortal(tsv);
*lp = SvCUR(tsv);
return SvPVX(tsv);
}
else {
STRLEN len;
char *t;
if (tsv) {
sv_2mortal(tsv);
t = SvPVX(tsv);
len = SvCUR(tsv);
}
else {
t = tmpbuf;
len = strlen(tmpbuf);
}
#ifdef FIXNEGATIVEZERO
if (len == 2 && t[0] == '-' && t[1] == '0') {
t = "0";
len = 1;
}
#endif
(void)SvUPGRADE(sv, SVt_PV);
*lp = len;
s = SvGROW(sv, len + 1);
SvCUR_set(sv, len);
(void)strcpy(s, t);
SvPOKp_on(sv);
return s;
}
}
/* This function is only called on magical items */
bool
sv_2bool(register SV *sv)
{
if (SvGMAGICAL(sv))
mg_get(sv);
if (!SvOK(sv))
return 0;
if (SvROK(sv)) {
#ifdef OVERLOAD
{
dTHR;
SV* tmpsv;
if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_)))
return SvTRUE(tmpsv);
}
#endif /* OVERLOAD */
return SvRV(sv) != 0;
}
if (SvPOKp(sv)) {
register XPV* Xpvtmp;
if ((Xpvtmp = (XPV*)SvANY(sv)) &&
(*Xpvtmp->xpv_pv > '0' ||
Xpvtmp->xpv_cur > 1 ||
(Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
return 1;
else
return 0;
}
else {
if (SvIOKp(sv))
return SvIVX(sv) != 0;
else {
if (SvNOKp(sv))
return SvNVX(sv) != 0.0;
else
return FALSE;
}
}
}
/* Note: sv_setsv() should not be called with a source string that needs
* to be reused, since it may destroy the source string if it is marked
* as temporary.
*/
void
sv_setsv(SV *dstr, register SV *sstr)
{
dTHR;
register U32 sflags;
register int dtype;
register int stype;
if (sstr == dstr)
return;
SV_CHECK_THINKFIRST(dstr);
if (!sstr)
sstr = &PL_sv_undef;
stype = SvTYPE(sstr);
dtype = SvTYPE(dstr);
if (dtype == SVt_PVGV && (SvFLAGS(dstr) & SVf_FAKE)) {
sv_unglob(dstr); /* so fake GLOB won't perpetuate */
sv_setpvn(dstr, "", 0);
(void)SvPOK_only(dstr);
dtype = SvTYPE(dstr);
}
#ifdef OVERLOAD
SvAMAGIC_off(dstr);
#endif /* OVERLOAD */
/* There's a lot of redundancy below but we're going for speed here */
switch (stype) {
case SVt_NULL:
undef_sstr:
if (dtype != SVt_PVGV) {
(void)SvOK_off(dstr);
return;
}
break;
case SVt_IV:
if (SvIOK(sstr)) {
switch (dtype) {
case SVt_NULL:
sv_upgrade(dstr, SVt_IV);
break;
case SVt_NV:
sv_upgrade(dstr, SVt_PVNV);
break;
case SVt_RV:
case SVt_PV:
sv_upgrade(dstr, SVt_PVIV);
break;
}
(void)SvIOK_only(dstr);
SvIVX(dstr) = SvIVX(sstr);
SvTAINT(dstr);
return;
}
goto undef_sstr;
case SVt_NV:
if (SvNOK(sstr)) {
switch (dtype) {
case SVt_NULL:
case SVt_IV:
sv_upgrade(dstr, SVt_NV);
break;
case SVt_RV:
case SVt_PV:
case SVt_PVIV:
sv_upgrade(dstr, SVt_PVNV);
break;
}
SvNVX(dstr) = SvNVX(sstr);
(void)SvNOK_only(dstr);
SvTAINT(dstr);
return;
}
goto undef_sstr;
case SVt_RV:
if (dtype < SVt_RV)
sv_upgrade(dstr, SVt_RV);
else if (dtype == SVt_PVGV &&
SvTYPE(SvRV(sstr)) == SVt_PVGV) {
sstr = SvRV(sstr);
if (sstr == dstr) {
if (PL_curcop->cop_stash != GvSTASH(dstr))
GvIMPORTED_on(dstr);
GvMULTI_on(dstr);
return;
}
goto glob_assign;
}
break;
case SVt_PV:
case SVt_PVFM:
if (dtype < SVt_PV)
sv_upgrade(dstr, SVt_PV);
break;
case SVt_PVIV:
if (dtype < SVt_PVIV)
sv_upgrade(dstr, SVt_PVIV);
break;
case SVt_PVNV:
if (dtype < SVt_PVNV)
sv_upgrade(dstr, SVt_PVNV);
break;
case SVt_PVAV:
case SVt_PVHV:
case SVt_PVCV:
case SVt_PVIO:
if (PL_op)
croak("Bizarre copy of %s in %s", sv_reftype(sstr, 0),
op_name[PL_op->op_type]);
else
croak("Bizarre copy of %s", sv_reftype(sstr, 0));
break;
case SVt_PVGV:
if (dtype <= SVt_PVGV) {
glob_assign:
if (dtype != SVt_PVGV) {
char *name = GvNAME(sstr);
STRLEN len = GvNAMELEN(sstr);
sv_upgrade(dstr, SVt_PVGV);
sv_magic(dstr, dstr, '*', name, len);
GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
GvNAME(dstr) = savepvn(name, len);
GvNAMELEN(dstr) = len;
SvFAKE_on(dstr); /* can coerce to non-glob */
}
/* ahem, death to those who redefine active sort subs */
else if (PL_curstackinfo->si_type == PERLSI_SORT
&& GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
croak("Can't redefine active sort subroutine %s",
GvNAME(dstr));
(void)SvOK_off(dstr);
GvINTRO_off(dstr); /* one-shot flag */
gp_free((GV*)dstr);
GvGP(dstr) = gp_ref(GvGP(sstr));
SvTAINT(dstr);
if (PL_curcop->cop_stash != GvSTASH(dstr))
GvIMPORTED_on(dstr);
GvMULTI_on(dstr);
return;
}
/* FALL THROUGH */
default:
if (SvGMAGICAL(sstr)) {
mg_get(sstr);
if (SvTYPE(sstr) != stype) {
stype = SvTYPE(sstr);
if (stype == SVt_PVGV && dtype <= SVt_PVGV)
goto glob_assign;
}
}
if (stype == SVt_PVLV)
SvUPGRADE(dstr, SVt_PVNV);
else
SvUPGRADE(dstr, stype);
}
sflags = SvFLAGS(sstr);
if (sflags & SVf_ROK) {
if (dtype >= SVt_PV) {
if (dtype == SVt_PVGV) {
SV *sref = SvREFCNT_inc(SvRV(sstr));
SV *dref = 0;
int intro = GvINTRO(dstr);
if (intro) {
GP *gp;
GvGP(dstr)->gp_refcnt--;
GvINTRO_off(dstr); /* one-shot flag */
Newz(602,gp, 1, GP);
GvGP(dstr) = gp_ref(gp);
GvSV(dstr) = NEWSV(72,0);
GvLINE(dstr) = PL_curcop->cop_line;
GvEGV(dstr) = (GV*)dstr;
}
GvMULTI_on(dstr);
switch (SvTYPE(sref)) {
case SVt_PVAV:
if (intro)
SAVESPTR(GvAV(dstr));
else
dref = (SV*)GvAV(dstr);
GvAV(dstr) = (AV*)sref;
if (PL_curcop->cop_stash != GvSTASH(dstr))
GvIMPORTED_AV_on(dstr);
break;
case SVt_PVHV:
if (intro)
SAVESPTR(GvHV(dstr));
else
dref = (SV*)GvHV(dstr);
GvHV(dstr) = (HV*)sref;
if (PL_curcop->cop_stash != GvSTASH(dstr))
GvIMPORTED_HV_on(dstr);
break;
case SVt_PVCV:
if (intro) {
if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
SvREFCNT_dec(GvCV(dstr));
GvCV(dstr) = Nullcv;
GvCVGEN(dstr) = 0; /* Switch off cacheness. */
PL_sub_generation++;
}
SAVESPTR(GvCV(dstr));
}
else
dref = (SV*)GvCV(dstr);
if (GvCV(dstr) != (CV*)sref) {
CV* cv = GvCV(dstr);
if (cv) {
if (!GvCVGEN((GV*)dstr) &&
(CvROOT(cv) || CvXSUB(cv)))
{
SV *const_sv = cv_const_sv(cv);
bool const_changed = TRUE;
if(const_sv)
const_changed = sv_cmp(const_sv,
op_const_sv(CvSTART((CV*)sref),
Nullcv));
/* ahem, death to those who redefine
* active sort subs */
if (PL_curstackinfo->si_type == PERLSI_SORT &&
PL_sortcop == CvSTART(cv))
croak(
"Can't redefine active sort subroutine %s",
GvENAME((GV*)dstr));
if (PL_dowarn || (const_changed && const_sv)) {
if (!(CvGV(cv) && GvSTASH(CvGV(cv))
&& HvNAME(GvSTASH(CvGV(cv)))
&& strEQ(HvNAME(GvSTASH(CvGV(cv))),
"autouse")))
warn(const_sv ?
"Constant subroutine %s redefined"
: "Subroutine %s redefined",
GvENAME((GV*)dstr));
}
}
cv_ckproto(cv, (GV*)dstr,
SvPOK(sref) ? SvPVX(sref) : Nullch);
}
GvCV(dstr) = (CV*)sref;
GvCVGEN(dstr) = 0; /* Switch off cacheness. */
GvASSUMECV_on(dstr);
PL_sub_generation++;
}
if (PL_curcop->cop_stash != GvSTASH(dstr))
GvIMPORTED_CV_on(dstr);
break;
case SVt_PVIO:
if (intro)
SAVESPTR(GvIOp(dstr));
else
dref = (SV*)GvIOp(dstr);
GvIOp(dstr) = (IO*)sref;
break;
default:
if (intro)
SAVESPTR(GvSV(dstr));
else
dref = (SV*)GvSV(dstr);
GvSV(dstr) = sref;
if (PL_curcop->cop_stash != GvSTASH(dstr))
GvIMPORTED_SV_on(dstr);
break;
}
if (dref)
SvREFCNT_dec(dref);
if (intro)
SAVEFREESV(sref);
SvTAINT(dstr);
return;
}
if (SvPVX(dstr)) {
(void)SvOOK_off(dstr); /* backoff */
Safefree(SvPVX(dstr));
SvLEN(dstr)=SvCUR(dstr)=0;
}
}
(void)SvOK_off(dstr);
SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
SvROK_on(dstr);
if (sflags & SVp_NOK) {
SvNOK_on(dstr);
SvNVX(dstr) = SvNVX(sstr);
}
if (sflags & SVp_IOK) {
(void)SvIOK_on(dstr);
SvIVX(dstr) = SvIVX(sstr);
}
#ifdef OVERLOAD
if (SvAMAGIC(sstr)) {
SvAMAGIC_on(dstr);
}
#endif /* OVERLOAD */
}
else if (sflags & SVp_POK) {
/*
* Check to see if we can just swipe the string. If so, it's a
* possible small lose on short strings, but a big win on long ones.
* It might even be a win on short strings if SvPVX(dstr)
* has to be allocated and SvPVX(sstr) has to be freed.
*/
if (SvTEMP(sstr) && /* slated for free anyway? */
SvREFCNT(sstr) == 1 && /* and no other references to it? */
!(sflags & SVf_OOK)) /* and not involved in OOK hack? */
{
if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
if (SvOOK(dstr)) {
SvFLAGS(dstr) &= ~SVf_OOK;
Safefree(SvPVX(dstr) - SvIVX(dstr));
}
else
Safefree(SvPVX(dstr));
}
(void)SvPOK_only(dstr);
SvPV_set(dstr, SvPVX(sstr));
SvLEN_set(dstr, SvLEN(sstr));
SvCUR_set(dstr, SvCUR(sstr));
SvTEMP_off(dstr);
(void)SvOK_off(sstr);
SvPV_set(sstr, Nullch);
SvLEN_set(sstr, 0);
SvCUR_set(sstr, 0);
SvTEMP_off(sstr);
}
else { /* have to copy actual string */
STRLEN len = SvCUR(sstr);
SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
Move(SvPVX(sstr),SvPVX(dstr),len,char);
SvCUR_set(dstr, len);
*SvEND(dstr) = '\0';
(void)SvPOK_only(dstr);
}
/*SUPPRESS 560*/
if (sflags & SVp_NOK) {
SvNOK_on(dstr);
SvNVX(dstr) = SvNVX(sstr);
}
if (sflags & SVp_IOK) {
(void)SvIOK_on(dstr);
SvIVX(dstr) = SvIVX(sstr);
}
}
else if (sflags & SVp_NOK) {
SvNVX(dstr) = SvNVX(sstr);
(void)SvNOK_only(dstr);
if (SvIOK(sstr)) {
(void)SvIOK_on(dstr);
SvIVX(dstr) = SvIVX(sstr);
}
}
else if (sflags & SVp_IOK) {
(void)SvIOK_only(dstr);
SvIVX(dstr) = SvIVX(sstr);
}
else {
if (dtype == SVt_PVGV) {
if (PL_dowarn)
warn("Undefined value assigned to typeglob");
}
else
(void)SvOK_off(dstr);
}
SvTAINT(dstr);
}
void
sv_setsv_mg(SV *dstr, register SV *sstr)
{
sv_setsv(dstr,sstr);
SvSETMAGIC(dstr);
}
void
sv_setpvn(register SV *sv, register const char *ptr, register STRLEN len)
{
register char *dptr;
assert(len >= 0); /* STRLEN is probably unsigned, so this may
elicit a warning, but it won't hurt. */
SV_CHECK_THINKFIRST(sv);
if (!ptr) {
(void)SvOK_off(sv);
return;
}
if (SvTYPE(sv) >= SVt_PV) {
if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
sv_unglob(sv);
}
else
sv_upgrade(sv, SVt_PV);
SvGROW(sv, len + 1);
dptr = SvPVX(sv);
Move(ptr,dptr,len,char);
dptr[len] = '\0';
SvCUR_set(sv, len);
(void)SvPOK_only(sv); /* validate pointer */
SvTAINT(sv);
}
void
sv_setpvn_mg(register SV *sv, register const char *ptr, register STRLEN len)
{
sv_setpvn(sv,ptr,len);
SvSETMAGIC(sv);
}
void
sv_setpv(register SV *sv, register const char *ptr)
{
register STRLEN len;
SV_CHECK_THINKFIRST(sv);
if (!ptr) {
(void)SvOK_off(sv);
return;
}
len = strlen(ptr);
if (SvTYPE(sv) >= SVt_PV) {
if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
sv_unglob(sv);
}
else
sv_upgrade(sv, SVt_PV);
SvGROW(sv, len + 1);
Move(ptr,SvPVX(sv),len+1,char);
SvCUR_set(sv, len);
(void)SvPOK_only(sv); /* validate pointer */
SvTAINT(sv);
}
void
sv_setpv_mg(register SV *sv, register const char *ptr)
{
sv_setpv(sv,ptr);
SvSETMAGIC(sv);
}
void
sv_usepvn(register SV *sv, register char *ptr, register STRLEN len)
{
SV_CHECK_THINKFIRST(sv);
(void)SvUPGRADE(sv, SVt_PV);
if (!ptr) {
(void)SvOK_off(sv);
return;
}
if (SvPVX(sv))
Safefree(SvPVX(sv));
Renew(ptr, len+1, char);
SvPVX(sv) = ptr;
SvCUR_set(sv, len);
SvLEN_set(sv, len+1);
*SvEND(sv) = '\0';
(void)SvPOK_only(sv); /* validate pointer */
SvTAINT(sv);
}
void
sv_usepvn_mg(register SV *sv, register char *ptr, register STRLEN len)
{
sv_usepvn(sv,ptr,len);
SvSETMAGIC(sv);
}
STATIC void
sv_check_thinkfirst(register SV *sv)
{
if (SvREADONLY(sv)) {
dTHR;
if (PL_curcop != &PL_compiling)
croak(no_modify);
}
if (SvROK(sv))
sv_unref(sv);
}
void
sv_chop(register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
{
register STRLEN delta;
if (!ptr || !SvPOKp(sv))
return;
SV_CHECK_THINKFIRST(sv);
if (SvTYPE(sv) < SVt_PVIV)
sv_upgrade(sv,SVt_PVIV);
if (!SvOOK(sv)) {
SvIVX(sv) = 0;
SvFLAGS(sv) |= SVf_OOK;
}
SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK);
delta = ptr - SvPVX(sv);
SvLEN(sv) -= delta;
SvCUR(sv) -= delta;
SvPVX(sv) += delta;
SvIVX(sv) += delta;
}
void
sv_catpvn(register SV *sv, register char *ptr, register STRLEN len)
{
STRLEN tlen;
char *junk;
junk = SvPV_force(sv, tlen);
SvGROW(sv, tlen + len + 1);
if (ptr == junk)
ptr = SvPVX(sv);
Move(ptr,SvPVX(sv)+tlen,len,char);
SvCUR(sv) += len;
*SvEND(sv) = '\0';
(void)SvPOK_only(sv); /* validate pointer */
SvTAINT(sv);
}
void
sv_catpvn_mg(register SV *sv, register char *ptr, register STRLEN len)
{
sv_catpvn(sv,ptr,len);
SvSETMAGIC(sv);
}
void
sv_catsv(SV *dstr, register SV *sstr)
{
char *s;
STRLEN len;
if (!sstr)
return;
if (s = SvPV(sstr, len))
sv_catpvn(dstr,s,len);
}
void
sv_catsv_mg(SV *dstr, register SV *sstr)
{
sv_catsv(dstr,sstr);
SvSETMAGIC(dstr);
}
void
sv_catpv(register SV *sv, register char *ptr)
{
register STRLEN len;
STRLEN tlen;
char *junk;
if (!ptr)
return;
junk = SvPV_force(sv, tlen);
len = strlen(ptr);
SvGROW(sv, tlen + len + 1);
if (ptr == junk)
ptr = SvPVX(sv);
Move(ptr,SvPVX(sv)+tlen,len+1,char);
SvCUR(sv) += len;
(void)SvPOK_only(sv); /* validate pointer */
SvTAINT(sv);
}
void
sv_catpv_mg(register SV *sv, register char *ptr)
{
sv_catpv(sv,ptr);
SvSETMAGIC(sv);
}
SV *
newSV(STRLEN len)
{
register SV *sv;
new_SV(sv);
SvANY(sv) = 0;
SvREFCNT(sv) = 1;
SvFLAGS(sv) = 0;
if (len) {
sv_upgrade(sv, SVt_PV);
SvGROW(sv, len + 1);
}
return sv;
}
/* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
void
sv_magic(register SV *sv, SV *obj, int how, char *name, I32 namlen)
{
MAGIC* mg;
if (SvREADONLY(sv)) {
dTHR;
if (PL_curcop != &PL_compiling && !strchr("gBf", how))
croak(no_modify);
}
if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
if (how == 't')
mg->mg_len |= 1;
return;
}
}
else {
(void)SvUPGRADE(sv, SVt_PVMG);
}
Newz(702,mg, 1, MAGIC);
mg->mg_moremagic = SvMAGIC(sv);
SvMAGIC(sv) = mg;
if (!obj || obj == sv || how == '#' || how == 'r')
mg->mg_obj = obj;
else {
dTHR;
mg->mg_obj = SvREFCNT_inc(obj);
mg->mg_flags |= MGf_REFCOUNTED;
}
mg->mg_type = how;
mg->mg_len = namlen;
if (name)
if (namlen >= 0)
mg->mg_ptr = savepvn(name, namlen);
else if (namlen == HEf_SVKEY)
mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
switch (how) {
case 0:
mg->mg_virtual = &vtbl_sv;
break;
#ifdef OVERLOAD
case 'A':
mg->mg_virtual = &vtbl_amagic;
break;
case 'a':
mg->mg_virtual = &vtbl_amagicelem;
break;
case 'c':
mg->mg_virtual = 0;
break;
#endif /* OVERLOAD */
case 'B':
mg->mg_virtual = &vtbl_bm;
break;
case 'E':
mg->mg_virtual = &vtbl_env;
break;
case 'f':
mg->mg_virtual = &vtbl_fm;
break;
case 'e':
mg->mg_virtual = &vtbl_envelem;
break;
case 'g':
mg->mg_virtual = &vtbl_mglob;
break;
case 'I':
mg->mg_virtual = &vtbl_isa;
break;
case 'i':
mg->mg_virtual = &vtbl_isaelem;
break;
case 'k':
mg->mg_virtual = &vtbl_nkeys;
break;
case 'L':
SvRMAGICAL_on(sv);
mg->mg_virtual = 0;
break;
case 'l':
mg->mg_virtual = &vtbl_dbline;
break;
#ifdef USE_THREADS
case 'm':
mg->mg_virtual = &vtbl_mutex;
break;
#endif /* USE_THREADS */
#ifdef USE_LOCALE_COLLATE
case 'o':
mg->mg_virtual = &vtbl_collxfrm;
break;
#endif /* USE_LOCALE_COLLATE */
case 'P':
mg->mg_virtual = &vtbl_pack;
break;
case 'p':
case 'q':
mg->mg_virtual = &vtbl_packelem;
break;
case 'r':
mg->mg_virtual = &vtbl_regexp;
break;
case 'S':
mg->mg_virtual = &vtbl_sig;
break;
case 's':
mg->mg_virtual = &vtbl_sigelem;
break;
case 't':
mg->mg_virtual = &vtbl_taint;
mg->mg_len = 1;
break;
case 'U':
mg->mg_virtual = &vtbl_uvar;
break;
case 'v':
mg->mg_virtual = &vtbl_vec;
break;
case 'x':
mg->mg_virtual = &vtbl_substr;
break;
case 'y':
mg->mg_virtual = &vtbl_defelem;
break;
case '*':
mg->mg_virtual = &vtbl_glob;
break;
case '#':
mg->mg_virtual = &vtbl_arylen;
break;
case '.':
mg->mg_virtual = &vtbl_pos;
break;
case '~': /* Reserved for use by extensions not perl internals. */
/* Useful for attaching extension internal data to perl vars. */
/* Note that multiple extensions may clash if magical scalars */
/* etc holding private data from one are passed to another. */
SvRMAGICAL_on(sv);
break;
default:
croak("Don't know how to handle magic of type '%c'", how);
}
mg_magical(sv);
if (SvGMAGICAL(sv))
SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
}
int
sv_unmagic(SV *sv, int type)
{
MAGIC* mg;
MAGIC** mgp;
if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
return 0;
mgp = &SvMAGIC(sv);
for (mg = *mgp; mg; mg = *mgp) {
if (mg->mg_type == type) {
MGVTBL* vtbl = mg->mg_virtual;
*mgp = mg->mg_moremagic;
if (vtbl && (vtbl->svt_free != NULL))
(VTBL->svt_free)(sv, mg);
if (mg->mg_ptr && mg->mg_type != 'g')
if (mg->mg_len >= 0)
Safefree(mg->mg_ptr);
else if (mg->mg_len == HEf_SVKEY)
SvREFCNT_dec((SV*)mg->mg_ptr);
if (mg->mg_flags & MGf_REFCOUNTED)
SvREFCNT_dec(mg->mg_obj);
Safefree(mg);
}
else
mgp = &mg->mg_moremagic;
}
if (!SvMAGIC(sv)) {
SvMAGICAL_off(sv);
SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
}
return 0;
}
void
sv_insert(SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
{
register char *big;
register char *mid;
register char *midend;
register char *bigend;
register I32 i;
STRLEN curlen;
if (!bigstr)
croak("Can't modify non-existent substring");
SvPV_force(bigstr, curlen);
if (offset + len > curlen) {
SvGROW(bigstr, offset+len+1);
Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
SvCUR_set(bigstr, offset+len);
}
i = littlelen - len;
if (i > 0) { /* string might grow */
big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
mid = big + offset + len;
midend = bigend = big + SvCUR(bigstr);
bigend += i;
*bigend = '\0';
while (midend > mid) /* shove everything down */
*--bigend = *--midend;
Move(little,big+offset,littlelen,char);
SvCUR(bigstr) += i;
SvSETMAGIC(bigstr);
return;
}
else if (i == 0) {
Move(little,SvPVX(bigstr)+offset,len,char);
SvSETMAGIC(bigstr);
return;
}
big = SvPVX(bigstr);
mid = big + offset;
midend = mid + len;
bigend = big + SvCUR(bigstr);
if (midend > bigend)
croak("panic: sv_insert");
if (mid - big > bigend - midend) { /* faster to shorten from end */
if (littlelen) {
Move(little, mid, littlelen,char);
mid += littlelen;
}
i = bigend - midend;
if (i > 0) {
Move(midend, mid, i,char);
mid += i;
}
*mid = '\0';
SvCUR_set(bigstr, mid - big);
}
/*SUPPRESS 560*/
else if (i = mid - big) { /* faster from front */
midend -= littlelen;
mid = midend;
sv_chop(bigstr,midend-i);
big += i;
while (i--)
*--midend = *--big;
if (littlelen)
Move(little, mid, littlelen,char);
}
else if (littlelen) {
midend -= littlelen;
sv_chop(bigstr,midend);
Move(little,midend,littlelen,char);
}
else {
sv_chop(bigstr,midend);
}
SvSETMAGIC(bigstr);
}
/* make sv point to what nstr did */
void
sv_replace(register SV *sv, register SV *nsv)
{
U32 refcnt = SvREFCNT(sv);
SV_CHECK_THINKFIRST(sv);
if (SvREFCNT(nsv) != 1)
warn("Reference miscount in sv_replace()");
if (SvMAGICAL(sv)) {
if (SvMAGICAL(nsv))
mg_free(nsv);
else
sv_upgrade(nsv, SVt_PVMG);
SvMAGIC(nsv) = SvMAGIC(sv);
SvFLAGS(nsv) |= SvMAGICAL(sv);
SvMAGICAL_off(sv);
SvMAGIC(sv) = 0;
}
SvREFCNT(sv) = 0;
sv_clear(sv);
assert(!SvREFCNT(sv));
StructCopy(nsv,sv,SV);
SvREFCNT(sv) = refcnt;
SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
del_SV(nsv);
}
void
sv_clear(register SV *sv)
{
HV* stash;
assert(sv);
assert(SvREFCNT(sv) == 0);
if (SvOBJECT(sv)) {
dTHR;
if (PL_defstash) { /* Still have a symbol table? */
djSP;
GV* destructor;
SV tmpref;
Zero(&tmpref, 1, SV);
sv_upgrade(&tmpref, SVt_RV);
SvROK_on(&tmpref);
SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
SvREFCNT(&tmpref) = 1;
do {
stash = SvSTASH(sv);
destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
if (destructor) {
ENTER;
PUSHSTACKi(PERLSI_DESTROY);
SvRV(&tmpref) = SvREFCNT_inc(sv);
EXTEND(SP, 2);
PUSHMARK(SP);
PUSHs(&tmpref);
PUTBACK;
perl_call_sv((SV*)GvCV(destructor),
G_DISCARD|G_EVAL|G_KEEPERR);
SvREFCNT(sv)--;
POPSTACK;
LEAVE;
}
} while (SvOBJECT(sv) && SvSTASH(sv) != stash);
del_XRV(SvANY(&tmpref));
}
if (SvOBJECT(sv)) {
SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
SvOBJECT_off(sv); /* Curse the object. */
if (SvTYPE(sv) != SVt_PVIO)
--PL_sv_objcount; /* XXX Might want something more general */
}
if (SvREFCNT(sv)) {
if (PL_in_clean_objs)
croak("DESTROY created new reference to dead object");
/* DESTROY gave object new lease on life */
return;
}
}
if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
mg_free(sv);
stash = NULL;
switch (SvTYPE(sv)) {
case SVt_PVIO:
if (IoIFP(sv) &&
IoIFP(sv) != PerlIO_stdin() &&
IoIFP(sv) != PerlIO_stdout() &&
IoIFP(sv) != PerlIO_stderr())
io_close((IO*)sv);
Safefree(IoTOP_NAME(sv));
Safefree(IoFMT_NAME(sv));
Safefree(IoBOTTOM_NAME(sv));
/* FALL THROUGH */
case SVt_PVBM:
goto freescalar;
case SVt_PVCV:
case SVt_PVFM:
cv_undef((CV*)sv);
goto freescalar;
case SVt_PVHV:
hv_undef((HV*)sv);
break;
case SVt_PVAV:
av_undef((AV*)sv);
break;
case SVt_PVLV:
SvREFCNT_dec(LvTARG(sv));
goto freescalar;
case SVt_PVGV:
gp_free((GV*)sv);
Safefree(GvNAME(sv));
/* cannot decrease stash refcount yet, as we might recursively delete
ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
of stash until current sv is completely gone.
-- JohnPC, 27 Mar 1998 */
stash = GvSTASH(sv);
/* FALL THROUGH */
case SVt_PVMG:
case SVt_PVNV:
case SVt_PVIV:
freescalar:
(void)SvOOK_off(sv);
/* FALL THROUGH */
case SVt_PV:
case SVt_RV:
if (SvROK(sv))
SvREFCNT_dec(SvRV(sv));
else if (SvPVX(sv) && SvLEN(sv))
Safefree(SvPVX(sv));
break;
/*
case SVt_NV:
case SVt_IV:
case SVt_NULL:
break;
*/
}
switch (SvTYPE(sv)) {
case SVt_NULL:
break;
case SVt_IV:
del_XIV(SvANY(sv));
break;
case SVt_NV:
del_XNV(SvANY(sv));
break;
case SVt_RV:
del_XRV(SvANY(sv));
break;
case SVt_PV:
del_XPV(SvANY(sv));
break;
case SVt_PVIV:
del_XPVIV(SvANY(sv));
break;
case SVt_PVNV:
del_XPVNV(SvANY(sv));
break;
case SVt_PVMG:
del_XPVMG(SvANY(sv));
break;
case SVt_PVLV:
del_XPVLV(SvANY(sv));
break;
case SVt_PVAV:
del_XPVAV(SvANY(sv));
break;
case SVt_PVHV:
del_XPVHV(SvANY(sv));
break;
case SVt_PVCV:
del_XPVCV(SvANY(sv));
break;
case SVt_PVGV:
del_XPVGV(SvANY(sv));
/* code duplication for increased performance. */
SvFLAGS(sv) &= SVf_BREAK;
SvFLAGS(sv) |= SVTYPEMASK;
/* decrease refcount of the stash that owns this GV, if any */
if (stash)
SvREFCNT_dec(stash);
return; /* not break, SvFLAGS reset already happened */
case SVt_PVBM:
del_XPVBM(SvANY(sv));
break;
case SVt_PVFM:
del_XPVFM(SvANY(sv));
break;
case SVt_PVIO:
del_XPVIO(SvANY(sv));
break;
}
SvFLAGS(sv) &= SVf_BREAK;
SvFLAGS(sv) |= SVTYPEMASK;
}
SV *
sv_newref(SV *sv)
{
if (sv)
ATOMIC_INC(SvREFCNT(sv));
return sv;
}
void
sv_free(SV *sv)
{
int refcount_is_zero;
if (!sv)
return;
if (SvREFCNT(sv) == 0) {
if (SvFLAGS(sv) & SVf_BREAK)
return;
if (PL_in_clean_all) /* All is fair */
return;
if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
/* make sure SvREFCNT(sv)==0 happens very seldom */
SvREFCNT(sv) = (~(U32)0)/2;
return;
}
warn("Attempt to free unreferenced scalar");
return;
}
ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
if (!refcount_is_zero)
return;
#ifdef DEBUGGING
if (SvTEMP(sv)) {
warn("Attempt to free temp prematurely: SV 0x%lx", (unsigned long)sv);
return;
}
#endif
if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
/* make sure SvREFCNT(sv)==0 happens very seldom */
SvREFCNT(sv) = (~(U32)0)/2;
return;
}
sv_clear(sv);
if (! SvREFCNT(sv))
del_SV(sv);
}
STRLEN
sv_len(register SV *sv)
{
char *junk;
STRLEN len;
if (!sv)
return 0;
if (SvGMAGICAL(sv))
len = mg_length(sv);
else
junk = SvPV(sv, len);
return len;
}
I32
sv_eq(register SV *str1, register SV *str2)
{
char *pv1;
STRLEN cur1;
char *pv2;
STRLEN cur2;
if (!str1) {
pv1 = "";
cur1 = 0;
}
else
pv1 = SvPV(str1, cur1);
if (!str2)
return !cur1;
else
pv2 = SvPV(str2, cur2);
if (cur1 != cur2)
return 0;
return memEQ(pv1, pv2, cur1);
}
I32
sv_cmp(register SV *str1, register SV *str2)
{
STRLEN cur1 = 0;
char *pv1 = str1 ? SvPV(str1, cur1) : (char *) NULL;
STRLEN cur2 = 0;
char *pv2 = str2 ? SvPV(str2, cur2) : (char *) NULL;
I32 retval;
if (!cur1)
return cur2 ? -1 : 0;
if (!cur2)
return 1;
retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
if (retval)
return retval < 0 ? -1 : 1;
if (cur1 == cur2)
return 0;
else
return cur1 < cur2 ? -1 : 1;
}
I32
sv_cmp_locale(register SV *sv1, register SV *sv2)
{
#ifdef USE_LOCALE_COLLATE
char *pv1, *pv2;
STRLEN len1, len2;
I32 retval;
if (PL_collation_standard)
goto raw_compare;
len1 = 0;
pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
len2 = 0;
pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
if (!pv1 || !len1) {
if (pv2 && len2)
return -1;
else
goto raw_compare;
}
else {
if (!pv2 || !len2)
return 1;
}
retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
if (retval)
return retval < 0 ? -1 : 1;
/*
* When the result of collation is equality, that doesn't mean
* that there are no differences -- some locales exclude some
* characters from consideration. So to avoid false equalities,
* we use the raw string as a tiebreaker.
*/
raw_compare:
/* FALL THROUGH */
#endif /* USE_LOCALE_COLLATE */
return sv_cmp(sv1, sv2);
}
#ifdef USE_LOCALE_COLLATE
/*
* Any scalar variable may carry an 'o' magic that contains the
* scalar data of the variable transformed to such a format that
* a normal memory comparison can be used to compare the data
* according to the locale settings.
*/
char *
sv_collxfrm(SV *sv, STRLEN *nxp)
{
MAGIC *mg;
mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
char *s, *xf;
STRLEN len, xlen;
if (mg)
Safefree(mg->mg_ptr);
s = SvPV(sv, len);
if ((xf = mem_collxfrm(s, len, &xlen))) {
if (SvREADONLY(sv)) {
SAVEFREEPV(xf);
*nxp = xlen;
return xf + sizeof(PL_collation_ix);
}
if (! mg) {
sv_magic(sv, 0, 'o', 0, 0);
mg = mg_find(sv, 'o');
assert(mg);
}
mg->mg_ptr = xf;
mg->mg_len = xlen;
}
else {
if (mg) {
mg->mg_ptr = NULL;
mg->mg_len = -1;
}
}
}
if (mg && mg->mg_ptr) {
*nxp = mg->mg_len;
return mg->mg_ptr + sizeof(PL_collation_ix);
}
else {
*nxp = 0;
return NULL;
}
}
#endif /* USE_LOCALE_COLLATE */
char *
sv_gets(register SV *sv, register PerlIO *fp, I32 append)
{
dTHR;
char *rsptr;
STRLEN rslen;
register STDCHAR rslast;
register STDCHAR *bp;
register I32 cnt;
I32 i;
SV_CHECK_THINKFIRST(sv);
(void)SvUPGRADE(sv, SVt_PV);
SvSCREAM_off(sv);
if (RsSNARF(PL_rs)) {
rsptr = NULL;
rslen = 0;
}
else if (RsRECORD(PL_rs)) {
I32 recsize, bytesread;
char *buffer;
/* Grab the size of the record we're getting */
recsize = SvIV(SvRV(PL_rs));
(void)SvPOK_only(sv); /* Validate pointer */
buffer = SvGROW(sv, recsize + 1);
/* Go yank in */
#ifdef VMS
/* VMS wants read instead of fread, because fread doesn't respect */
/* RMS record boundaries. This is not necessarily a good thing to be */
/* doing, but we've got no other real choice */
bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
#else
bytesread = PerlIO_read(fp, buffer, recsize);
#endif
SvCUR_set(sv, bytesread);
buffer[bytesread] = '\0';
return(SvCUR(sv) ? SvPVX(sv) : Nullch);
}
else if (RsPARA(PL_rs)) {
rsptr = "\n\n";
rslen = 2;
}
else
rsptr = SvPV(PL_rs, rslen);
rslast = rslen ? rsptr[rslen - 1] : '\0';
if (RsPARA(PL_rs)) { /* have to do this both before and after */
do { /* to make sure file boundaries work right */
if (PerlIO_eof(fp))
return 0;
i = PerlIO_getc(fp);
if (i != '\n') {
if (i == -1)
return 0;
PerlIO_ungetc(fp,i);
break;
}
} while (i != EOF);
}
/* See if we know enough about I/O mechanism to cheat it ! */
/* This used to be #ifdef test - it is made run-time test for ease
of abstracting out stdio interface. One call should be cheap
enough here - and may even be a macro allowing compile
time optimization.
*/
if (PerlIO_fast_gets(fp)) {
/*
* We're going to steal some values from the stdio struct
* and put EVERYTHING in the innermost loop into registers.
*/
register STDCHAR *ptr;
STRLEN bpx;
I32 shortbuffered;
#if defined(VMS) && defined(PERLIO_IS_STDIO)
/* An ungetc()d char is handled separately from the regular
* buffer, so we getc() it back out and stuff it in the buffer.
*/
i = PerlIO_getc(fp);
if (i == EOF) return 0;
*(--((*fp)->_ptr)) = (unsigned char) i;
(*fp)->_cnt++;
#endif
/* Here is some breathtakingly efficient cheating */
cnt = PerlIO_get_cnt(fp); /* get count into register */
(void)SvPOK_only(sv); /* validate pointer */
if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
if (cnt > 80 && SvLEN(sv) > append) {
shortbuffered = cnt - SvLEN(sv) + append + 1;
cnt -= shortbuffered;
}
else {
shortbuffered = 0;
/* remember that cnt can be negative */
SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
}
}
else
shortbuffered = 0;
bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
ptr = (STDCHAR*)PerlIO_get_ptr(fp);
DEBUG_P(PerlIO_printf(Perl_debug_log,
"Screamer: entering, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
DEBUG_P(PerlIO_printf(Perl_debug_log,
"Screamer: entering: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
(long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
(long)(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
for (;;) {
screamer:
if (cnt > 0) {
if (rslen) {
while (cnt > 0) { /* this | eat */
cnt--;
if ((*bp++ = *ptr++) == rslast) /* really | dust */
goto thats_all_folks; /* screams | sed :-) */
}
}
else {
Copy(ptr, bp, cnt, char); /* this | eat */
bp += cnt; /* screams | dust */
ptr += cnt; /* louder | sed :-) */
cnt = 0;
}
}
if (shortbuffered) { /* oh well, must extend */
cnt = shortbuffered;
shortbuffered = 0;
bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
SvCUR_set(sv, bpx);
SvGROW(sv, SvLEN(sv) + append + cnt + 2);
bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
continue;
}
DEBUG_P(PerlIO_printf(Perl_debug_log,
"Screamer: going to getc, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
DEBUG_P(PerlIO_printf(Perl_debug_log,
"Screamer: pre: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
(long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
(long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
/* This used to call 'filbuf' in stdio form, but as that behaves like
getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
another abstraction. */
i = PerlIO_getc(fp); /* get more characters */
DEBUG_P(PerlIO_printf(Perl_debug_log,
"Screamer: post: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
(long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
(long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
cnt = PerlIO_get_cnt(fp);
ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
DEBUG_P(PerlIO_printf(Perl_debug_log,
"Screamer: after getc, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
if (i == EOF) /* all done for ever? */
goto thats_really_all_folks;
bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
SvCUR_set(sv, bpx);
SvGROW(sv, bpx + cnt + 2);
bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
*bp++ = i; /* store character from PerlIO_getc */
if (rslen && (STDCHAR)i == rslast) /* all done for now? */
goto thats_all_folks;
}
thats_all_folks:
if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
memNE((char*)bp - rslen, rsptr, rslen))
goto screamer; /* go back to the fray */
thats_really_all_folks:
if (shortbuffered)
cnt += shortbuffered;
DEBUG_P(PerlIO_printf(Perl_debug_log,
"Screamer: quitting, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
DEBUG_P(PerlIO_printf(Perl_debug_log,
"Screamer: end: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
(long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
(long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
*bp = '\0';
SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
DEBUG_P(PerlIO_printf(Perl_debug_log,
"Screamer: done, len=%ld, string=|%.*s|\n",
(long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
}
else
{
/*The big, slow, and stupid way */
STDCHAR buf[8192];
screamer2:
if (rslen) {
register STDCHAR *bpe = buf + sizeof(buf);
bp = buf;
while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
; /* keep reading */
cnt = bp - buf;
}
else {
cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
/* Accomodate broken VAXC compiler, which applies U8 cast to
* both args of ?: operator, causing EOF to change into 255
*/
if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
}
if (append)
sv_catpvn(sv, (char *) buf, cnt);
else
sv_setpvn(sv, (char *) buf, cnt);
if (i != EOF && /* joy */
(!rslen ||
SvCUR(sv) < rslen ||
memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
{
append = -1;
/*
* If we're reading from a TTY and we get a short read,
* indicating that the user hit his EOF character, we need
* to notice it now, because if we try to read from the TTY
* again, the EOF condition will disappear.
*
* The comparison of cnt to sizeof(buf) is an optimization
* that prevents unnecessary calls to feof().
*
* - jik 9/25/96
*/
if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
goto screamer2;
}
}
if (RsPARA(PL_rs)) { /* have to do this both before and after */
while (i != EOF) { /* to make sure file boundaries work right */
i = PerlIO_getc(fp);
if (i != '\n') {
PerlIO_ungetc(fp,i);
break;
}
}
}
#ifdef WIN32
win32_strip_return(sv);
#endif
return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
}
void
sv_inc(register SV *sv)
{
register char *d;
int flags;
if (!sv)
return;
if (SvTHINKFIRST(sv)) {
if (SvREADONLY(sv)) {
dTHR;
if (PL_curcop != &PL_compiling)
croak(no_modify);
}
if (SvROK(sv)) {
IV i;
#ifdef OVERLOAD
if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) return;
#endif /* OVERLOAD */
i = (IV)SvRV(sv);
sv_unref(sv);
sv_setiv(sv, i);
}
}
if (SvGMAGICAL(sv))
mg_get(sv);
flags = SvFLAGS(sv);
if (flags & SVp_NOK) {
(void)SvNOK_only(sv);
SvNVX(sv) += 1.0;
return;
}
if (flags & SVp_IOK) {
if (SvIVX(sv) == IV_MAX)
sv_setnv(sv, (double)IV_MAX + 1.0);
else {
(void)SvIOK_only(sv);
++SvIVX(sv);
}
return;
}
if (!(flags & SVp_POK) || !*SvPVX(sv)) {
if ((flags & SVTYPEMASK) < SVt_PVNV)
sv_upgrade(sv, SVt_NV);
SvNVX(sv) = 1.0;
(void)SvNOK_only(sv);
return;
}
d = SvPVX(sv);
while (isALPHA(*d)) d++;
while (isDIGIT(*d)) d++;
if (*d) {
SET_NUMERIC_STANDARD();
sv_setnv(sv,atof(SvPVX(sv)) + 1.0); /* punt */
return;
}
d--;
while (d >= SvPVX(sv)) {
if (isDIGIT(*d)) {
if (++*d <= '9')
return;
*(d--) = '0';
}
else {
#ifdef EBCDIC
/* MKS: The original code here died if letters weren't consecutive.
* at least it didn't have to worry about non-C locales. The
* new code assumes that ('z'-'a')==('Z'-'A'), letters are
* arranged in order (although not consecutively) and that only
* [A-Za-z] are accepted by isALPHA in the C locale.
*/
if (*d != 'z' && *d != 'Z') {
do { ++*d; } while (!isALPHA(*d));
return;
}
*(d--) -= 'z' - 'a';
#else
++*d;
if (isALPHA(*d))
return;
*(d--) -= 'z' - 'a' + 1;
#endif
}
}
/* oh,oh, the number grew */
SvGROW(sv, SvCUR(sv) + 2);
SvCUR(sv)++;
for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
*d = d[-1];
if (isDIGIT(d[1]))
*d = '1';
else
*d = d[1];
}
void
sv_dec(register SV *sv)
{
int flags;
if (!sv)
return;
if (SvTHINKFIRST(sv)) {
if (SvREADONLY(sv)) {
dTHR;
if (PL_curcop != &PL_compiling)
croak(no_modify);
}
if (SvROK(sv)) {
IV i;
#ifdef OVERLOAD
if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) return;
#endif /* OVERLOAD */
i = (IV)SvRV(sv);
sv_unref(sv);
sv_setiv(sv, i);
}
}
if (SvGMAGICAL(sv))
mg_get(sv);
flags = SvFLAGS(sv);
if (flags & SVp_NOK) {
SvNVX(sv) -= 1.0;
(void)SvNOK_only(sv);
return;
}
if (flags & SVp_IOK) {
if (SvIVX(sv) == IV_MIN)
sv_setnv(sv, (double)IV_MIN - 1.0);
else {
(void)SvIOK_only(sv);
--SvIVX(sv);
}
return;
}
if (!(flags & SVp_POK)) {
if ((flags & SVTYPEMASK) < SVt_PVNV)
sv_upgrade(sv, SVt_NV);
SvNVX(sv) = -1.0;
(void)SvNOK_only(sv);
return;
}
SET_NUMERIC_STANDARD();
sv_setnv(sv,atof(SvPVX(sv)) - 1.0); /* punt */
}
/* Make a string that will exist for the duration of the expression
* evaluation. Actually, it may have to last longer than that, but
* hopefully we won't free it until it has been assigned to a
* permanent location. */
STATIC void
sv_mortalgrow(void)
{
dTHR;
PL_tmps_max += (PL_tmps_max < 512) ? 128 : 512;
Renew(PL_tmps_stack, PL_tmps_max, SV*);
}
SV *
sv_mortalcopy(SV *oldstr)
{
dTHR;
register SV *sv;
new_SV(sv);
SvANY(sv) = 0;
SvREFCNT(sv) = 1;
SvFLAGS(sv) = 0;
sv_setsv(sv,oldstr);
if (++PL_tmps_ix >= PL_tmps_max)
sv_mortalgrow();
PL_tmps_stack[PL_tmps_ix] = sv;
SvTEMP_on(sv);
return sv;
}
SV *
sv_newmortal(void)
{
dTHR;
register SV *sv;
new_SV(sv);
SvANY(sv) = 0;
SvREFCNT(sv) = 1;
SvFLAGS(sv) = SVs_TEMP;
if (++PL_tmps_ix >= PL_tmps_max)
sv_mortalgrow();
PL_tmps_stack[PL_tmps_ix] = sv;
return sv;
}
/* same thing without the copying */
SV *
sv_2mortal(register SV *sv)
{
dTHR;
if (!sv)
return sv;
if (SvREADONLY(sv) && SvIMMORTAL(sv))
return sv;
if (++PL_tmps_ix >= PL_tmps_max)
sv_mortalgrow();
PL_tmps_stack[PL_tmps_ix] = sv;
SvTEMP_on(sv);
return sv;
}
SV *
newSVpv(char *s, STRLEN len)
{
register SV *sv;
new_SV(sv);
SvANY(sv) = 0;
SvREFCNT(sv) = 1;
SvFLAGS(sv) = 0;
if (!len)
len = strlen(s);
sv_setpvn(sv,s,len);
return sv;
}
SV *
newSVpvn(char *s, STRLEN len)
{
register SV *sv;
new_SV(sv);
SvANY(sv) = 0;
SvREFCNT(sv) = 1;
SvFLAGS(sv) = 0;
sv_setpvn(sv,s,len);
return sv;
}
SV *
newSVpvf(const char* pat, ...)
{
register SV *sv;
va_list args;
new_SV(sv);
SvANY(sv) = 0;
SvREFCNT(sv) = 1;
SvFLAGS(sv) = 0;
va_start(args, pat);
sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
va_end(args);
return sv;
}
SV *
newSVnv(double n)
{
register SV *sv;
new_SV(sv);
SvANY(sv) = 0;
SvREFCNT(sv) = 1;
SvFLAGS(sv) = 0;
sv_setnv(sv,n);
return sv;
}
SV *
newSViv(IV i)
{
register SV *sv;
new_SV(sv);
SvANY(sv) = 0;
SvREFCNT(sv) = 1;
SvFLAGS(sv) = 0;
sv_setiv(sv,i);
return sv;
}
SV *
newRV_noinc(SV *tmpRef)
{
dTHR;
register SV *sv;
new_SV(sv);
SvANY(sv) = 0;
SvREFCNT(sv) = 1;
SvFLAGS(sv) = 0;
sv_upgrade(sv, SVt_RV);
SvTEMP_off(tmpRef);
SvRV(sv) = tmpRef;
SvROK_on(sv);
return sv;
}
SV *
newRV(SV *tmpRef)
{
return newRV_noinc(SvREFCNT_inc(tmpRef));
}
/* make an exact duplicate of old */
SV *
newSVsv(register SV *old)
{
register SV *sv;
if (!old)
return Nullsv;
if (SvTYPE(old) == SVTYPEMASK) {
warn("semi-panic: attempt to dup freed string");
return Nullsv;
}
new_SV(sv);
SvANY(sv) = 0;
SvREFCNT(sv) = 1;
SvFLAGS(sv) = 0;
if (SvTEMP(old)) {
SvTEMP_off(old);
sv_setsv(sv,old);
SvTEMP_on(old);
}
else
sv_setsv(sv,old);
return sv;
}
void
sv_reset(register char *s, HV *stash)
{
register HE *entry;
register GV *gv;
register SV *sv;
register I32 i;
register PMOP *pm;
register I32 max;
char todo[256];
if (!stash)
return;
if (!*s) { /* reset ?? searches */
for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
pm->op_pmdynflags &= ~PMdf_USED;
}
return;
}
/* reset variables */
if (!HvARRAY(stash))
return;
Zero(todo, 256, char);
while (*s) {
i = *s;
if (s[1] == '-') {
s += 2;
}
max = *s++;
for ( ; i <= max; i++) {
todo[i] = 1;
}
for (i = 0; i <= (I32) HvMAX(stash); i++) {
for (entry = HvARRAY(stash)[i];
entry;
entry = HeNEXT(entry)) {
if (!todo[(U8)*HeKEY(entry)])
continue;
gv = (GV*)HeVAL(entry);
sv = GvSV(gv);
(void)SvOK_off(sv);
if (SvTYPE(sv) >= SVt_PV) {
SvCUR_set(sv, 0);
if (SvPVX(sv) != Nullch)
*SvPVX(sv) = '\0';
SvTAINT(sv);
}
if (GvAV(gv)) {
av_clear(GvAV(gv));
}
if (GvHV(gv) && !HvNAME(GvHV(gv))) {
hv_clear(GvHV(gv));
#ifndef VMS /* VMS has no environ array */
if (gv == PL_envgv)
environ[0] = Nullch;
#endif
}
}
}
}
}
IO*
sv_2io(SV *sv)
{
IO* io;
GV* gv;
switch (SvTYPE(sv)) {
case SVt_PVIO:
io = (IO*)sv;
break;
case SVt_PVGV:
gv = (GV*)sv;
io = GvIO(gv);
if (!io)
croak("Bad filehandle: %s", GvNAME(gv));
break;
default:
if (!SvOK(sv))
croak(no_usym, "filehandle");
if (SvROK(sv))
return sv_2io(SvRV(sv));
gv = gv_fetchpv(SvPV(sv,PL_na), FALSE, SVt_PVIO);
if (gv)
io = GvIO(gv);
else
io = 0;
if (!io)
croak("Bad filehandle: %s", SvPV(sv,PL_na));
break;
}
return io;
}
CV *
sv_2cv(SV *sv, HV **st, GV **gvp, I32 lref)
{
GV *gv;
CV *cv;
if (!sv)
return *gvp = Nullgv, Nullcv;
switch (SvTYPE(sv)) {
case SVt_PVCV:
*st = CvSTASH(sv);
*gvp = Nullgv;
return (CV*)sv;
case SVt_PVHV:
case SVt_PVAV:
*gvp = Nullgv;
return Nullcv;
case SVt_PVGV:
gv = (GV*)sv;
*gvp = gv;
*st = GvESTASH(gv);
goto fix_gv;
default:
if (SvGMAGICAL(sv))
mg_get(sv);
if (SvROK(sv)) {
cv = (CV*)SvRV(sv);
if (SvTYPE(cv) != SVt_PVCV)
croak("Not a subroutine reference");
*gvp = Nullgv;
*st = CvSTASH(cv);
return cv;
}
if (isGV(sv))
gv = (GV*)sv;
else
gv = gv_fetchpv(SvPV(sv, PL_na), lref, SVt_PVCV);
*gvp = gv;
if (!gv)
return Nullcv;
*st = GvESTASH(gv);
fix_gv:
if (lref && !GvCVu(gv)) {
SV *tmpsv;
ENTER;
tmpsv = NEWSV(704,0);
gv_efullname3(tmpsv, gv, Nullch);
newSUB(start_subparse(FALSE, 0),
newSVOP(OP_CONST, 0, tmpsv),
Nullop,
Nullop);
LEAVE;
if (!GvCVu(gv))
croak("Unable to create sub named \"%s\"", SvPV(sv,PL_na));
}
return GvCVu(gv);
}
}
I32
sv_true(register SV *sv)
{
dTHR;
if (!sv)
return 0;
if (SvPOK(sv)) {
register XPV* tXpv;
if ((tXpv = (XPV*)SvANY(sv)) &&
(*tXpv->xpv_pv > '0' ||
tXpv->xpv_cur > 1 ||
(tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
return 1;
else
return 0;
}
else {
if (SvIOK(sv))
return SvIVX(sv) != 0;
else {
if (SvNOK(sv))
return SvNVX(sv) != 0.0;
else
return sv_2bool(sv);
}
}
}
IV
sv_iv(register SV *sv)
{
if (SvIOK(sv))
return SvIVX(sv);
return sv_2iv(sv);
}
UV
sv_uv(register SV *sv)
{
if (SvIOK(sv))
return SvUVX(sv);
return sv_2uv(sv);
}
double
sv_nv(register SV *sv)
{
if (SvNOK(sv))
return SvNVX(sv);
return sv_2nv(sv);
}
char *
sv_pvn(SV *sv, STRLEN *lp)
{
if (SvPOK(sv)) {
*lp = SvCUR(sv);
return SvPVX(sv);
}
return sv_2pv(sv, lp);
}
char *
sv_pvn_force(SV *sv, STRLEN *lp)
{
char *s;
if (SvREADONLY(sv)) {
dTHR;
if (PL_curcop != &PL_compiling)
croak(no_modify);
}
if (SvPOK(sv)) {
*lp = SvCUR(sv);
}
else {
if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) {
sv_unglob(sv);
s = SvPVX(sv);
*lp = SvCUR(sv);
}
else {
dTHR;
croak("Can't coerce %s to string in %s", sv_reftype(sv,0),
op_name[PL_op->op_type]);
}
}
else
s = sv_2pv(sv, lp);
if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
STRLEN len = *lp;
if (SvROK(sv))
sv_unref(sv);
(void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
SvGROW(sv, len + 1);
Move(s,SvPVX(sv),len,char);
SvCUR_set(sv, len);
*SvEND(sv) = '\0';
}
if (!SvPOK(sv)) {
SvPOK_on(sv); /* validate pointer */
SvTAINT(sv);
DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2pv(%s)\n",
(unsigned long)sv,SvPVX(sv)));
}
}
return SvPVX(sv);
}
char *
sv_reftype(SV *sv, int ob)
{
if (ob && SvOBJECT(sv))
return HvNAME(SvSTASH(sv));
else {
switch (SvTYPE(sv)) {
case SVt_NULL:
case SVt_IV:
case SVt_NV:
case SVt_RV:
case SVt_PV:
case SVt_PVIV:
case SVt_PVNV:
case SVt_PVMG:
case SVt_PVBM:
if (SvROK(sv))
return "REF";
else
return "SCALAR";
case SVt_PVLV: return "LVALUE";
case SVt_PVAV: return "ARRAY";
case SVt_PVHV: return "HASH";
case SVt_PVCV: return "CODE";
case SVt_PVGV: return "GLOB";
case SVt_PVFM: return "FORMAT";
default: return "UNKNOWN";
}
}
}
int
sv_isobject(SV *sv)
{
if (!sv)
return 0;
if (SvGMAGICAL(sv))
mg_get(sv);
if (!SvROK(sv))
return 0;
sv = (SV*)SvRV(sv);
if (!SvOBJECT(sv))
return 0;
return 1;
}
int
sv_isa(SV *sv, char *name)
{
if (!sv)
return 0;
if (SvGMAGICAL(sv))
mg_get(sv);
if (!SvROK(sv))
return 0;
sv = (SV*)SvRV(sv);
if (!SvOBJECT(sv))
return 0;
return strEQ(HvNAME(SvSTASH(sv)), name);
}
SV*
newSVrv(SV *rv, char *classname)
{
dTHR;
SV *sv;
new_SV(sv);
SvANY(sv) = 0;
SvREFCNT(sv) = 0;
SvFLAGS(sv) = 0;
SV_CHECK_THINKFIRST(rv);
#ifdef OVERLOAD
SvAMAGIC_off(rv);
#endif /* OVERLOAD */
if (SvTYPE(rv) < SVt_RV)
sv_upgrade(rv, SVt_RV);
(void)SvOK_off(rv);
SvRV(rv) = SvREFCNT_inc(sv);
SvROK_on(rv);
if (classname) {
HV* stash = gv_stashpv(classname, TRUE);
(void)sv_bless(rv, stash);
}
return sv;
}
SV*
sv_setref_pv(SV *rv, char *classname, void *pv)
{
if (!pv) {
sv_setsv(rv, &PL_sv_undef);
SvSETMAGIC(rv);
}
else
sv_setiv(newSVrv(rv,classname), (IV)pv);
return rv;
}
SV*
sv_setref_iv(SV *rv, char *classname, IV iv)
{
sv_setiv(newSVrv(rv,classname), iv);
return rv;
}
SV*
sv_setref_nv(SV *rv, char *classname, double nv)
{
sv_setnv(newSVrv(rv,classname), nv);
return rv;
}
SV*
sv_setref_pvn(SV *rv, char *classname, char *pv, I32 n)
{
sv_setpvn(newSVrv(rv,classname), pv, n);
return rv;
}
SV*
sv_bless(SV *sv, HV *stash)
{
dTHR;
SV *tmpRef;
if (!SvROK(sv))
croak("Can't bless non-reference value");
tmpRef = SvRV(sv);
if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
if (SvREADONLY(tmpRef))
croak(no_modify);
if (SvOBJECT(tmpRef)) {
if (SvTYPE(tmpRef) != SVt_PVIO)
--PL_sv_objcount;
SvREFCNT_dec(SvSTASH(tmpRef));
}
}
SvOBJECT_on(tmpRef);
if (SvTYPE(tmpRef) != SVt_PVIO)
++PL_sv_objcount;
(void)SvUPGRADE(tmpRef, SVt_PVMG);
SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
#ifdef OVERLOAD
if (Gv_AMG(stash))
SvAMAGIC_on(sv);
else
SvAMAGIC_off(sv);
#endif /* OVERLOAD */
return sv;
}
STATIC void
sv_unglob(SV *sv)
{
assert(SvTYPE(sv) == SVt_PVGV);
SvFAKE_off(sv);
if (GvGP(sv))
gp_free((GV*)sv);
if (GvSTASH(sv)) {
SvREFCNT_dec(GvSTASH(sv));
GvSTASH(sv) = Nullhv;
}
sv_unmagic(sv, '*');
Safefree(GvNAME(sv));
GvMULTI_off(sv);
SvFLAGS(sv) &= ~SVTYPEMASK;
SvFLAGS(sv) |= SVt_PVMG;
}
void
sv_unref(SV *sv)
{
SV* rv = SvRV(sv);
SvRV(sv) = 0;
SvROK_off(sv);
if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
SvREFCNT_dec(rv);
else
sv_2mortal(rv); /* Schedule for freeing later */
}
void
sv_taint(SV *sv)
{
sv_magic((sv), Nullsv, 't', Nullch, 0);
}
void
sv_untaint(SV *sv)
{
if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
MAGIC *mg = mg_find(sv, 't');
if (mg)
mg->mg_len &= ~1;
}
}
bool
sv_tainted(SV *sv)
{
if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
MAGIC *mg = mg_find(sv, 't');
if (mg && ((mg->mg_len & 1) || (mg->mg_len & 2) && mg->mg_obj == sv))
return TRUE;
}
return FALSE;
}
void
sv_setpviv(SV *sv, IV iv)
{
STRLEN len;
char buf[TYPE_DIGITS(UV)];
char *ptr = buf + sizeof(buf);
int sign;
UV uv;
char *p;
sv_setpvn(sv, "", 0);
if (iv >= 0) {
uv = iv;
sign = 0;
} else {
uv = -iv;
sign = 1;
}
do {
*--ptr = '0' + (uv % 10);
} while (uv /= 10);
len = (buf + sizeof(buf)) - ptr;
/* taking advantage of SvCUR(sv) == 0 */
SvGROW(sv, sign + len + 1);
p = SvPVX(sv);
if (sign)
*p++ = '-';
memcpy(p, ptr, len);
p += len;
*p = '\0';
SvCUR(sv) = p - SvPVX(sv);
}
void
sv_setpviv_mg(SV *sv, IV iv)
{
sv_setpviv(sv,iv);
SvSETMAGIC(sv);
}
void
sv_setpvf(SV *sv, const char* pat, ...)
{
va_list args;
va_start(args, pat);
sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
va_end(args);
}
void
sv_setpvf_mg(SV *sv, const char* pat, ...)
{
va_list args;
va_start(args, pat);
sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
va_end(args);
SvSETMAGIC(sv);
}
void
sv_catpvf(SV *sv, const char* pat, ...)
{
va_list args;
va_start(args, pat);
sv_vcatpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
va_end(args);
}
void
sv_catpvf_mg(SV *sv, const char* pat, ...)
{
va_list args;
va_start(args, pat);
sv_vcatpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
va_end(args);
SvSETMAGIC(sv);
}
void
sv_vsetpvfn(SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *used_locale)
{
sv_setpvn(sv, "", 0);
sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, used_locale);
}
void
sv_vcatpvfn(SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *used_locale)
{
dTHR;
char *p;
char *q;
char *patend;
STRLEN origlen;
I32 svix = 0;
static char nullstr[] = "(null)";
/* no matter what, this is a string now */
(void)SvPV_force(sv, origlen);
/* special-case "", "%s", and "%_" */
if (patlen == 0)
return;
if (patlen == 2 && pat[0] == '%') {
switch (pat[1]) {
case 's':
if (args) {
char *s = va_arg(*args, char*);
sv_catpv(sv, s ? s : nullstr);
}
else if (svix < svmax)
sv_catsv(sv, *svargs);
return;
case '_':
if (args) {
sv_catsv(sv, va_arg(*args, SV*));
return;
}
/* See comment on '_' below */
break;
}
}
patend = (char*)pat + patlen;
for (p = (char*)pat; p < patend; p = q) {
bool alt = FALSE;
bool left = FALSE;
char fill = ' ';
char plus = 0;
char intsize = 0;
STRLEN width = 0;
STRLEN zeros = 0;
bool has_precis = FALSE;
STRLEN precis = 0;
char esignbuf[4];
STRLEN esignlen = 0;
char *eptr = Nullch;
STRLEN elen = 0;
char ebuf[TYPE_DIGITS(int) * 2 + 16]; /* large enough for "%#.#f" */
static char *efloatbuf = Nullch;
static STRLEN efloatsize = 0;
char c;
int i;
unsigned base;
IV iv;
UV uv;
double nv;
STRLEN have;
STRLEN need;
STRLEN gap;
for (q = p; q < patend && *q != '%'; ++q) ;
if (q > p) {
sv_catpvn(sv, p, q - p);
p = q;
}
if (q++ >= patend)
break;
/* FLAGS */
while (*q) {
switch (*q) {
case ' ':
case '+':
plus = *q++;
continue;
case '-':
left = TRUE;
q++;
continue;
case '0':
fill = *q++;
continue;
case '#':
alt = TRUE;
q++;
continue;
default:
break;
}
break;
}
/* WIDTH */
switch (*q) {
case '1': case '2': case '3':
case '4': case '5': case '6':
case '7': case '8': case '9':
width = 0;
while (isDIGIT(*q))
width = width * 10 + (*q++ - '0');
break;
case '*':
if (args)
i = va_arg(*args, int);
else
i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
left |= (i < 0);
width = (i < 0) ? -i : i;
q++;
break;
}
/* PRECISION */
if (*q == '.') {
q++;
if (*q == '*') {
if (args)
i = va_arg(*args, int);
else
i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
precis = (i < 0) ? 0 : i;
q++;
}
else {
precis = 0;
while (isDIGIT(*q))
precis = precis * 10 + (*q++ - '0');
}
has_precis = TRUE;
}
/* SIZE */
switch (*q) {
case 'l':
#if 0 /* when quads have better support within Perl */
if (*(q + 1) == 'l') {
intsize = 'q';
q += 2;
break;
}
#endif
/* FALL THROUGH */
case 'h':
case 'V':
intsize = *q++;
break;
}
/* CONVERSION */
switch (c = *q++) {
/* STRINGS */
case '%':
eptr = q - 1;
elen = 1;
goto string;
case 'c':
if (args)
c = va_arg(*args, int);
else
c = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
eptr = &c;
elen = 1;
goto string;
case 's':
if (args) {
eptr = va_arg(*args, char*);
if (eptr)
elen = strlen(eptr);
else {
eptr = nullstr;
elen = sizeof nullstr - 1;
}
}
else if (svix < svmax)
eptr = SvPVx(svargs[svix++], elen);
goto string;
case '_':
/*
* The "%_" hack might have to be changed someday,
* if ISO or ANSI decide to use '_' for something.
* So we keep it hidden from users' code.
*/
if (!args)
goto unknown;
eptr = SvPVx(va_arg(*args, SV*), elen);
string:
if (has_precis && elen > precis)
elen = precis;
break;
/* INTEGERS */
case 'p':
if (args)
uv = (UV)va_arg(*args, void*);
else
uv = (svix < svmax) ? (UV)svargs[svix++] : 0;
base = 16;
goto integer;
case 'D':
intsize = 'l';
/* FALL THROUGH */
case 'd':
case 'i':
if (args) {
switch (intsize) {
case 'h': iv = (short)va_arg(*args, int); break;
default: iv = va_arg(*args, int); break;
case 'l': iv = va_arg(*args, long); break;
case 'V': iv = va_arg(*args, IV); break;
}
}
else {
iv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
switch (intsize) {
case 'h': iv = (short)iv; break;
default: iv = (int)iv; break;
case 'l': iv = (long)iv; break;
case 'V': break;
}
}
if (iv >= 0) {
uv = iv;
if (plus)
esignbuf[esignlen++] = plus;
}
else {
uv = -iv;
esignbuf[esignlen++] = '-';
}
base = 10;
goto integer;
case 'U':
intsize = 'l';
/* FALL THROUGH */
case 'u':
base = 10;
goto uns_integer;
case 'O':
intsize = 'l';
/* FALL THROUGH */
case 'o':
base = 8;
goto uns_integer;
case 'X':
case 'x':
base = 16;
uns_integer:
if (args) {
switch (intsize) {
case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
default: uv = va_arg(*args, unsigned); break;
case 'l': uv = va_arg(*args, unsigned long); break;
case 'V': uv = va_arg(*args, UV); break;
}
}
else {
uv = (svix < svmax) ? SvUVx(svargs[svix++]) : 0;
switch (intsize) {
case 'h': uv = (unsigned short)uv; break;
default: uv = (unsigned)uv; break;
case 'l': uv = (unsigned long)uv; break;
case 'V': break;
}
}
integer:
eptr = ebuf + sizeof ebuf;
switch (base) {
unsigned dig;
case 16:
if (!uv)
alt = FALSE;
p = (c == 'X') ? "0123456789ABCDEF" : "0123456789abcdef";
do {
dig = uv & 15;
*--eptr = p[dig];
} while (uv >>= 4);
if (alt) {
esignbuf[esignlen++] = '0';
esignbuf[esignlen++] = c; /* 'x' or 'X' */
}
break;
case 8:
do {
dig = uv & 7;
*--eptr = '0' + dig;
} while (uv >>= 3);
if (alt && *eptr != '0')
*--eptr = '0';
break;
default: /* it had better be ten or less */
do {
dig = uv % base;
*--eptr = '0' + dig;
} while (uv /= base);
break;
}
elen = (ebuf + sizeof ebuf) - eptr;
if (has_precis) {
if (precis > elen)
zeros = precis - elen;
else if (precis == 0 && elen == 1 && *eptr == '0')
elen = 0;
}
break;
/* FLOATING POINT */
case 'F':
c = 'f'; /* maybe %F isn't supported here */
/* FALL THROUGH */
case 'e': case 'E':
case 'f':
case 'g': case 'G':
/* This is evil, but floating point is even more evil */
if (args)
nv = va_arg(*args, double);
else
nv = (svix < svmax) ? SvNVx(svargs[svix++]) : 0.0;
need = 0;
if (c != 'e' && c != 'E') {
i = PERL_INT_MIN;
(void)frexp(nv, &i);
if (i == PERL_INT_MIN)
die("panic: frexp");
if (i > 0)
need = BIT_DIGITS(i);
}
need += has_precis ? precis : 6; /* known default */
if (need < width)
need = width;
need += 20; /* fudge factor */
if (efloatsize < need) {
Safefree(efloatbuf);
efloatsize = need + 20; /* more fudge */
New(906, efloatbuf, efloatsize, char);
}
eptr = ebuf + sizeof ebuf;
*--eptr = '\0';
*--eptr = c;
if (has_precis) {
base = precis;
do { *--eptr = '0' + (base % 10); } while (base /= 10);
*--eptr = '.';
}
if (width) {
base = width;
do { *--eptr = '0' + (base % 10); } while (base /= 10);
}
if (fill == '0')
*--eptr = fill;
if (left)
*--eptr = '-';
if (plus)
*--eptr = plus;
if (alt)
*--eptr = '#';
*--eptr = '%';
(void)sprintf(efloatbuf, eptr, nv);
eptr = efloatbuf;
elen = strlen(efloatbuf);
#ifdef LC_NUMERIC
/*
* User-defined locales may include arbitrary characters.
* And, unfortunately, some system may alloc the "C" locale
* to be overridden by a malicious user.
*/
if (used_locale)
*used_locale = TRUE;
#endif /* LC_NUMERIC */
break;
/* SPECIAL */
case 'n':
i = SvCUR(sv) - origlen;
if (args) {
switch (intsize) {
case 'h': *(va_arg(*args, short*)) = i; break;
default: *(va_arg(*args, int*)) = i; break;
case 'l': *(va_arg(*args, long*)) = i; break;
case 'V': *(va_arg(*args, IV*)) = i; break;
}
}
else if (svix < svmax)
sv_setuv(svargs[svix++], (UV)i);
continue; /* not "break" */
/* UNKNOWN */
default:
unknown:
if (!args && PL_dowarn &&
(PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
SV *msg = sv_newmortal();
sv_setpvf(msg, "Invalid conversion in %s: ",
(PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
if (c)
sv_catpvf(msg, isPRINT(c) ? "\"%%%c\"" : "\"%%\\%03o\"",
c & 0xFF);
else
sv_catpv(msg, "end of string");
warn("%_", msg); /* yes, this is reentrant */
}
/* output mangled stuff ... */
if (c == '\0')
--q;
eptr = p;
elen = q - p;
/* ... right here, because formatting flags should not apply */
SvGROW(sv, SvCUR(sv) + elen + 1);
p = SvEND(sv);
memcpy(p, eptr, elen);
p += elen;
*p = '\0';
SvCUR(sv) = p - SvPVX(sv);
continue; /* not "break" */
}
have = esignlen + zeros + elen;
need = (have > width ? have : width);
gap = need - have;
SvGROW(sv, SvCUR(sv) + need + 1);
p = SvEND(sv);
if (esignlen && fill == '0') {
for (i = 0; i < esignlen; i++)
*p++ = esignbuf[i];
}
if (gap && !left) {
memset(p, fill, gap);
p += gap;
}
if (esignlen && fill != '0') {
for (i = 0; i < esignlen; i++)
*p++ = esignbuf[i];
}
if (zeros) {
for (i = zeros; i; i--)
*p++ = '0';
}
if (elen) {
memcpy(p, eptr, elen);
p += elen;
}
if (gap && left) {
memset(p, ' ', gap);
p += gap;
}
*p = '\0';
SvCUR(sv) = p - SvPVX(sv);
}
}
void
sv_dump(SV *sv)
{
#ifdef DEBUGGING
SV *d = sv_newmortal();
char *s;
U32 flags;
U32 type;
if (!sv) {
PerlIO_printf(Perl_debug_log, "SV = 0\n");
return;
}
flags = SvFLAGS(sv);
type = SvTYPE(sv);
sv_setpvf(d, "(0x%lx)\n REFCNT = %ld\n FLAGS = (",
(unsigned long)SvANY(sv), (long)SvREFCNT(sv));
if (flags & SVs_PADBUSY) sv_catpv(d, "PADBUSY,");
if (flags & SVs_PADTMP) sv_catpv(d, "PADTMP,");
if (flags & SVs_PADMY) sv_catpv(d, "PADMY,");
if (flags & SVs_TEMP) sv_catpv(d, "TEMP,");
if (flags & SVs_OBJECT) sv_catpv(d, "OBJECT,");
if (flags & SVs_GMG) sv_catpv(d, "GMG,");
if (flags & SVs_SMG) sv_catpv(d, "SMG,");
if (flags & SVs_RMG) sv_catpv(d, "RMG,");
if (flags & SVf_IOK) sv_catpv(d, "IOK,");
if (flags & SVf_NOK) sv_catpv(d, "NOK,");
if (flags & SVf_POK) sv_catpv(d, "POK,");
if (flags & SVf_ROK) sv_catpv(d, "ROK,");
if (flags & SVf_OOK) sv_catpv(d, "OOK,");
if (flags & SVf_FAKE) sv_catpv(d, "FAKE,");
if (flags & SVf_READONLY) sv_catpv(d, "READONLY,");
#ifdef OVERLOAD
if (flags & SVf_AMAGIC) sv_catpv(d, "OVERLOAD,");
#endif /* OVERLOAD */
if (flags & SVp_IOK) sv_catpv(d, "pIOK,");
if (flags & SVp_NOK) sv_catpv(d, "pNOK,");
if (flags & SVp_POK) sv_catpv(d, "pPOK,");
if (flags & SVp_SCREAM) sv_catpv(d, "SCREAM,");
switch (type) {
case SVt_PVCV:
case SVt_PVFM:
if (CvANON(sv)) sv_catpv(d, "ANON,");
if (CvUNIQUE(sv)) sv_catpv(d, "UNIQUE,");
if (CvCLONE(sv)) sv_catpv(d, "CLONE,");
if (CvCLONED(sv)) sv_catpv(d, "CLONED,");
if (CvNODEBUG(sv)) sv_catpv(d, "NODEBUG,");
break;
case SVt_PVHV:
if (HvSHAREKEYS(sv)) sv_catpv(d, "SHAREKEYS,");
if (HvLAZYDEL(sv)) sv_catpv(d, "LAZYDEL,");
break;
case SVt_PVGV:
if (GvINTRO(sv)) sv_catpv(d, "INTRO,");
if (GvMULTI(sv)) sv_catpv(d, "MULTI,");
if (GvASSUMECV(sv)) sv_catpv(d, "ASSUMECV,");
if (GvIMPORTED(sv)) {
sv_catpv(d, "IMPORT");
if (GvIMPORTED(sv) == GVf_IMPORTED)
sv_catpv(d, "ALL,");
else {
sv_catpv(d, "(");
if (GvIMPORTED_SV(sv)) sv_catpv(d, " SV");
if (GvIMPORTED_AV(sv)) sv_catpv(d, " AV");
if (GvIMPORTED_HV(sv)) sv_catpv(d, " HV");
if (GvIMPORTED_CV(sv)) sv_catpv(d, " CV");
sv_catpv(d, " ),");
}
}
case SVt_PVBM:
if (SvTAIL(sv)) sv_catpv(d, "TAIL,");
if (SvCOMPILED(sv)) sv_catpv(d, "COMPILED,");
break;
}
if (*(SvEND(d) - 1) == ',')
SvPVX(d)[--SvCUR(d)] = '\0';
sv_catpv(d, ")");
s = SvPVX(d);
PerlIO_printf(Perl_debug_log, "SV = ");
switch (type) {
case SVt_NULL:
PerlIO_printf(Perl_debug_log, "NULL%s\n", s);
return;
case SVt_IV:
PerlIO_printf(Perl_debug_log, "IV%s\n", s);
break;
case SVt_NV:
PerlIO_printf(Perl_debug_log, "NV%s\n", s);
break;
case SVt_RV:
PerlIO_printf(Perl_debug_log, "RV%s\n", s);
break;
case SVt_PV:
PerlIO_printf(Perl_debug_log, "PV%s\n", s);
break;
case SVt_PVIV:
PerlIO_printf(Perl_debug_log, "PVIV%s\n", s);
break;
case SVt_PVNV:
PerlIO_printf(Perl_debug_log, "PVNV%s\n", s);
break;
case SVt_PVBM:
PerlIO_printf(Perl_debug_log, "PVBM%s\n", s);
break;
case SVt_PVMG:
PerlIO_printf(Perl_debug_log, "PVMG%s\n", s);
break;
case SVt_PVLV:
PerlIO_printf(Perl_debug_log, "PVLV%s\n", s);
break;
case SVt_PVAV:
PerlIO_printf(Perl_debug_log, "PVAV%s\n", s);
break;
case SVt_PVHV:
PerlIO_printf(Perl_debug_log, "PVHV%s\n", s);
break;
case SVt_PVCV:
PerlIO_printf(Perl_debug_log, "PVCV%s\n", s);
break;
case SVt_PVGV:
PerlIO_printf(Perl_debug_log, "PVGV%s\n", s);
break;
case SVt_PVFM:
PerlIO_printf(Perl_debug_log, "PVFM%s\n", s);
break;
case SVt_PVIO:
PerlIO_printf(Perl_debug_log, "PVIO%s\n", s);
break;
default:
PerlIO_printf(Perl_debug_log, "UNKNOWN%s\n", s);
return;
}
if (type >= SVt_PVIV || type == SVt_IV)
PerlIO_printf(Perl_debug_log, " IV = %ld\n", (long)SvIVX(sv));
if (type >= SVt_PVNV || type == SVt_NV) {
SET_NUMERIC_STANDARD();
PerlIO_printf(Perl_debug_log, " NV = %.*g\n", DBL_DIG, SvNVX(sv));
}
if (SvROK(sv)) {
PerlIO_printf(Perl_debug_log, " RV = 0x%lx\n", (long)SvRV(sv));
sv_dump(SvRV(sv));
return;
}
if (type < SVt_PV)
return;
if (type <= SVt_PVLV) {
if (SvPVX(sv))
PerlIO_printf(Perl_debug_log, " PV = 0x%lx \"%s\"\n CUR = %ld\n LEN = %ld\n",
(long)SvPVX(sv), SvPVX(sv), (long)SvCUR(sv), (long)SvLEN(sv));
else
PerlIO_printf(Perl_debug_log, " PV = 0\n");
}
if (type >= SVt_PVMG) {
if (SvMAGIC(sv)) {
PerlIO_printf(Perl_debug_log, " MAGIC = 0x%lx\n", (long)SvMAGIC(sv));
}
if (SvSTASH(sv))
PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(SvSTASH(sv)));
}
switch (type) {
case SVt_PVLV:
PerlIO_printf(Perl_debug_log, " TYPE = %c\n", LvTYPE(sv));
PerlIO_printf(Perl_debug_log, " TARGOFF = %ld\n", (long)LvTARGOFF(sv));
PerlIO_printf(Perl_debug_log, " TARGLEN = %ld\n", (long)LvTARGLEN(sv));
PerlIO_printf(Perl_debug_log, " TARG = 0x%lx\n", (long)LvTARG(sv));
sv_dump(LvTARG(sv));
break;
case SVt_PVAV:
PerlIO_printf(Perl_debug_log, " ARRAY = 0x%lx\n", (long)AvARRAY(sv));
PerlIO_printf(Perl_debug_log, " ALLOC = 0x%lx\n", (long)AvALLOC(sv));
PerlIO_printf(Perl_debug_log, " FILL = %ld\n", (long)AvFILLp(sv));
PerlIO_printf(Perl_debug_log, " MAX = %ld\n", (long)AvMAX(sv));
PerlIO_printf(Perl_debug_log, " ARYLEN = 0x%lx\n", (long)AvARYLEN(sv));
flags = AvFLAGS(sv);
sv_setpv(d, "");
if (flags & AVf_REAL) sv_catpv(d, ",REAL");
if (flags & AVf_REIFY) sv_catpv(d, ",REIFY");
if (flags & AVf_REUSED) sv_catpv(d, ",REUSED");
PerlIO_printf(Perl_debug_log, " FLAGS = (%s)\n",
SvCUR(d) ? SvPVX(d) + 1 : "");
break;
case SVt_PVHV:
PerlIO_printf(Perl_debug_log, " ARRAY = 0x%lx\n",(long)HvARRAY(sv));
PerlIO_printf(Perl_debug_log, " KEYS = %ld\n", (long)HvKEYS(sv));
PerlIO_printf(Perl_debug_log, " FILL = %ld\n", (long)HvFILL(sv));
PerlIO_printf(Perl_debug_log, " MAX = %ld\n", (long)HvMAX(sv));
PerlIO_printf(Perl_debug_log, " RITER = %ld\n", (long)HvRITER(sv));
PerlIO_printf(Perl_debug_log, " EITER = 0x%lx\n",(long) HvEITER(sv));
if (HvPMROOT(sv))
PerlIO_printf(Perl_debug_log, " PMROOT = 0x%lx\n",(long)HvPMROOT(sv));
if (HvNAME(sv))
PerlIO_printf(Perl_debug_log, " NAME = \"%s\"\n", HvNAME(sv));
break;
case SVt_PVCV:
if (SvPOK(sv))
PerlIO_printf(Perl_debug_log, " PROTOTYPE = \"%s\"\n", SvPV(sv,PL_na));
/* FALL THROUGH */
case SVt_PVFM:
PerlIO_printf(Perl_debug_log, " STASH = 0x%lx\n", (long)CvSTASH(sv));
PerlIO_printf(Perl_debug_log, " START = 0x%lx\n", (long)CvSTART(sv));
PerlIO_printf(Perl_debug_log, " ROOT = 0x%lx\n", (long)CvROOT(sv));
PerlIO_printf(Perl_debug_log, " XSUB = 0x%lx\n", (long)CvXSUB(sv));
PerlIO_printf(Perl_debug_log, " XSUBANY = %ld\n", (long)CvXSUBANY(sv).any_i32);
PerlIO_printf(Perl_debug_log, " GV = 0x%lx", (long)CvGV(sv));
if (CvGV(sv) && GvNAME(CvGV(sv))) {
PerlIO_printf(Perl_debug_log, " \"%s\"\n", GvNAME(CvGV(sv)));
} else {
PerlIO_printf(Perl_debug_log, "\n");
}
PerlIO_printf(Perl_debug_log, " FILEGV = 0x%lx\n", (long)CvFILEGV(sv));
PerlIO_printf(Perl_debug_log, " DEPTH = %ld\n", (long)CvDEPTH(sv));
PerlIO_printf(Perl_debug_log, " PADLIST = 0x%lx\n", (long)CvPADLIST(sv));
PerlIO_printf(Perl_debug_log, " OUTSIDE = 0x%lx\n", (long)CvOUTSIDE(sv));
#ifdef USE_THREADS
PerlIO_printf(Perl_debug_log, " MUTEXP = 0x%lx\n", (long)CvMUTEXP(sv));
PerlIO_printf(Perl_debug_log, " OWNER = 0x%lx\n", (long)CvOWNER(sv));
#endif /* USE_THREADS */
PerlIO_printf(Perl_debug_log, " FLAGS = 0x%lx\n",
(unsigned long)CvFLAGS(sv));
if (type == SVt_PVFM)
PerlIO_printf(Perl_debug_log, " LINES = %ld\n", (long)FmLINES(sv));
break;
case SVt_PVGV:
PerlIO_printf(Perl_debug_log, " NAME = \"%s\"\n", GvNAME(sv));
PerlIO_printf(Perl_debug_log, " NAMELEN = %ld\n", (long)GvNAMELEN(sv));
PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n",
SvTYPE(GvSTASH(sv)) == SVt_PVHV ? HvNAME(GvSTASH(sv)) : "(deleted)");
PerlIO_printf(Perl_debug_log, " GP = 0x%lx\n", (long)GvGP(sv));
PerlIO_printf(Perl_debug_log, " SV = 0x%lx\n", (long)GvSV(sv));
PerlIO_printf(Perl_debug_log, " REFCNT = %ld\n", (long)GvREFCNT(sv));
PerlIO_printf(Perl_debug_log, " IO = 0x%lx\n", (long)GvIOp(sv));
PerlIO_printf(Perl_debug_log, " FORM = 0x%lx\n", (long)GvFORM(sv));
PerlIO_printf(Perl_debug_log, " AV = 0x%lx\n", (long)GvAV(sv));
PerlIO_printf(Perl_debug_log, " HV = 0x%lx\n", (long)GvHV(sv));
PerlIO_printf(Perl_debug_log, " CV = 0x%lx\n", (long)GvCV(sv));
PerlIO_printf(Perl_debug_log, " CVGEN = 0x%lx\n", (long)GvCVGEN(sv));
PerlIO_printf(Perl_debug_log, " LASTEXPR = %ld\n", (long)GvLASTEXPR(sv));
PerlIO_printf(Perl_debug_log, " LINE = %ld\n", (long)GvLINE(sv));
PerlIO_printf(Perl_debug_log, " FILEGV = 0x%lx\n", (long)GvFILEGV(sv));
PerlIO_printf(Perl_debug_log, " EGV = 0x%lx\n", (long)GvEGV(sv));
break;
case SVt_PVIO:
PerlIO_printf(Perl_debug_log, " IFP = 0x%lx\n", (long)IoIFP(sv));
PerlIO_printf(Perl_debug_log, " OFP = 0x%lx\n", (long)IoOFP(sv));
PerlIO_printf(Perl_debug_log, " DIRP = 0x%lx\n", (long)IoDIRP(sv));
PerlIO_printf(Perl_debug_log, " LINES = %ld\n", (long)IoLINES(sv));
PerlIO_printf(Perl_debug_log, " PAGE = %ld\n", (long)IoPAGE(sv));
PerlIO_printf(Perl_debug_log, " PAGE_LEN = %ld\n", (long)IoPAGE_LEN(sv));
PerlIO_printf(Perl_debug_log, " LINES_LEFT = %ld\n", (long)IoLINES_LEFT(sv));
PerlIO_printf(Perl_debug_log, " TOP_NAME = \"%s\"\n", IoTOP_NAME(sv));
PerlIO_printf(Perl_debug_log, " TOP_GV = 0x%lx\n", (long)IoTOP_GV(sv));
PerlIO_printf(Perl_debug_log, " FMT_NAME = \"%s\"\n", IoFMT_NAME(sv));
PerlIO_printf(Perl_debug_log, " FMT_GV = 0x%lx\n", (long)IoFMT_GV(sv));
PerlIO_printf(Perl_debug_log, " BOTTOM_NAME = \"%s\"\n", IoBOTTOM_NAME(sv));
PerlIO_printf(Perl_debug_log, " BOTTOM_GV = 0x%lx\n", (long)IoBOTTOM_GV(sv));
PerlIO_printf(Perl_debug_log, " SUBPROCESS = %ld\n", (long)IoSUBPROCESS(sv));
PerlIO_printf(Perl_debug_log, " TYPE = %c\n", IoTYPE(sv));
PerlIO_printf(Perl_debug_log, " FLAGS = 0x%lx\n", (long)IoFLAGS(sv));
break;
}
#endif /* DEBUGGING */
}
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