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sv.c
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C/C++ Source or Header
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1996-09-28
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73KB
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3,678 lines
/* sv.c
*
* Copyright (c) 1991-1994, 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)
# define FAST_SV_GETS
#endif
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 SV *new_sv _((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));
#ifdef PURIFY
#define new_SV() sv = (SV*)safemalloc(sizeof(SV))
#define del_SV(p) free((char*)p)
void
sv_add_arena(ptr, size, flags)
char* ptr;
U32 size;
U32 flags;
{
if (!(flags & SVf_FAKE))
free(ptr);
}
#else
#define new_SV() \
if (sv_root) { \
sv = sv_root; \
sv_root = (SV*)SvANY(sv); \
++sv_count; \
} \
else \
sv = more_sv();
static SV*
new_sv()
{
SV* sv;
if (sv_root) {
sv = sv_root;
sv_root = (SV*)SvANY(sv);
++sv_count;
return sv;
}
return more_sv();
}
#ifdef DEBUGGING
#define del_SV(p) \
if (debug & 32768) \
del_sv(p); \
else { \
SvANY(p) = (void *)sv_root; \
sv_root = p; \
--sv_count; \
}
static void
del_sv(p)
SV* p;
{
if (debug & 32768) {
SV* sva;
SV* sv;
SV* svend;
int ok = 0;
for (sva = 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;
}
}
SvANY(p) = (void *) sv_root;
sv_root = p;
--sv_count;
}
#else
#define del_SV(p) \
SvANY(p) = (void *)sv_root; \
sv_root = p; \
--sv_count;
#endif
void
sv_add_arena(ptr, size, flags)
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 *) sv_arenaroot; /* ptr to next arena */
SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
SvFLAGS(sva) = flags; /* FAKE if not to be freed */
sv_arenaroot = sva;
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;
}
static SV*
more_sv()
{
if (nice_chunk) {
sv_add_arena(nice_chunk, nice_chunk_size, 0);
nice_chunk = Nullch;
}
else
sv_add_arena(safemalloc(1008), 1008, 0);
return new_sv();
}
#endif
void
sv_report_used()
{
SV* sva;
SV* sv;
register SV* svend;
for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
sv = sva + 1;
svend = &sva[SvREFCNT(sva)];
while (sv < svend) {
if (SvTYPE(sv) != SVTYPEMASK) {
fprintf(stderr, "****\n");
sv_dump(sv);
}
++sv;
}
}
}
void
sv_clean_objs()
{
SV* sva;
register SV* sv;
register SV* svend;
SV* rv;
#ifndef DISABLE_DESTRUCTOR_KLUDGE
register GV* gv;
for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
gv = sva + 1;
svend = &sva[SvREFCNT(sva)];
while (gv < svend) {
if (SvTYPE(gv) == SVt_PVGV && (sv = GvSV(gv)) &&
SvROK(sv) && SvOBJECT(rv = SvRV(sv)))
{
DEBUG_D((fprintf(stderr, "Cleaning object ref:\n "),
sv_dump(sv));)
SvROK_off(sv);
SvRV(sv) = 0;
SvREFCNT_dec(rv);
}
++gv;
}
}
if (!sv_objcount)
return;
#endif
for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
sv = sva + 1;
svend = &sva[SvREFCNT(sva)];
while (sv < svend) {
if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
DEBUG_D((fprintf(stderr, "Cleaning object ref:\n "),
sv_dump(sv));)
SvROK_off(sv);
SvRV(sv) = 0;
SvREFCNT_dec(rv);
}
/* XXX Might want to check arrays, etc. */
++sv;
}
}
}
void
sv_clean_all()
{
SV* sva;
register SV* sv;
register SV* svend;
for (sva = sv_arenaroot; sva; sva = (SV*) SvANY(sva)) {
sv = sva + 1;
svend = &sva[SvREFCNT(sva)];
while (sv < svend) {
if (SvTYPE(sv) != SVTYPEMASK) {
DEBUG_D((fprintf(stderr, "Cleaning loops:\n "), sv_dump(sv));)
SvFLAGS(sv) |= SVf_BREAK;
SvREFCNT_dec(sv);
}
++sv;
}
}
}
void
sv_free_arenas()
{
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 = sv_arenaroot; sva; sva = svanext) {
svanext = (SV*) SvANY(sva);
while (svanext && SvFAKE(svanext))
svanext = (SV*) SvANY(svanext);
if (!SvFAKE(sva))
Safefree(sva);
}
}
static XPVIV*
new_xiv()
{
IV** xiv;
if (xiv_root) {
xiv = xiv_root;
/*
* See comment in more_xiv() -- RAM.
*/
xiv_root = (IV**)*xiv;
return (XPVIV*)((char*)xiv - sizeof(XPV));
}
return more_xiv();
}
static void
del_xiv(p)
XPVIV* p;
{
IV** xiv = (IV**)((char*)(p) + sizeof(XPV));
*xiv = (IV *)xiv_root;
xiv_root = xiv;
}
static XPVIV*
more_xiv()
{
register IV** xiv;
register IV** xivend;
XPV* ptr = (XPV*)safemalloc(1008);
ptr->xpv_pv = (char*)xiv_arenaroot; /* linked list of xiv arenas */
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 */
xiv_root = xiv;
while (xiv < xivend) {
*xiv = (IV *)(xiv + 1);
xiv++;
}
*xiv = 0;
return new_xiv();
}
static XPVNV*
new_xnv()
{
double* xnv;
if (xnv_root) {
xnv = xnv_root;
xnv_root = *(double**)xnv;
return (XPVNV*)((char*)xnv - sizeof(XPVIV));
}
return more_xnv();
}
static void
del_xnv(p)
XPVNV* p;
{
double* xnv = (double*)((char*)(p) + sizeof(XPVIV));
*(double**)xnv = xnv_root;
xnv_root = xnv;
}
static XPVNV*
more_xnv()
{
register double* xnv;
register double* xnvend;
xnv = (double*)safemalloc(1008);
xnvend = &xnv[1008 / sizeof(double) - 1];
xnv += (sizeof(XPVIV) - 1) / sizeof(double) + 1; /* fudge by sizeof XPVIV */
xnv_root = xnv;
while (xnv < xnvend) {
*(double**)xnv = (double*)(xnv + 1);
xnv++;
}
*(double**)xnv = 0;
return new_xnv();
}
static XRV*
new_xrv()
{
XRV* xrv;
if (xrv_root) {
xrv = xrv_root;
xrv_root = (XRV*)xrv->xrv_rv;
return xrv;
}
return more_xrv();
}
static void
del_xrv(p)
XRV* p;
{
p->xrv_rv = (SV*)xrv_root;
xrv_root = p;
}
static XRV*
more_xrv()
{
register XRV* xrv;
register XRV* xrvend;
xrv_root = (XRV*)safemalloc(1008);
xrv = 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()
{
XPV* xpv;
if (xpv_root) {
xpv = xpv_root;
xpv_root = (XPV*)xpv->xpv_pv;
return xpv;
}
return more_xpv();
}
static void
del_xpv(p)
XPV* p;
{
p->xpv_pv = (char*)xpv_root;
xpv_root = p;
}
static XPV*
more_xpv()
{
register XPV* xpv;
register XPV* xpvend;
xpv_root = (XPV*)safemalloc(1008);
xpv = 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) free((char*)p)
#else
#define new_XIV() (void*)new_xiv()
#define del_XIV(p) del_xiv(p)
#endif
#ifdef PURIFY
#define new_XNV() (void*)safemalloc(sizeof(XPVNV))
#define del_XNV(p) free((char*)p)
#else
#define new_XNV() (void*)new_xnv()
#define del_XNV(p) del_xnv(p)
#endif
#ifdef PURIFY
#define new_XRV() (void*)safemalloc(sizeof(XRV))
#define del_XRV(p) free((char*)p)
#else
#define new_XRV() (void*)new_xrv()
#define del_XRV(p) del_xrv(p)
#endif
#ifdef PURIFY
#define new_XPV() (void*)safemalloc(sizeof(XPV))
#define del_XPV(p) free((char*)p)
#else
#define new_XPV() (void*)new_xpv()
#define del_XPV(p) del_xpv(p)
#endif
#define new_XPVIV() (void*)safemalloc(sizeof(XPVIV))
#define del_XPVIV(p) free((char*)p)
#define new_XPVNV() (void*)safemalloc(sizeof(XPVNV))
#define del_XPVNV(p) free((char*)p)
#define new_XPVMG() (void*)safemalloc(sizeof(XPVMG))
#define del_XPVMG(p) free((char*)p)
#define new_XPVLV() (void*)safemalloc(sizeof(XPVLV))
#define del_XPVLV(p) free((char*)p)
#define new_XPVAV() (void*)safemalloc(sizeof(XPVAV))
#define del_XPVAV(p) free((char*)p)
#define new_XPVHV() (void*)safemalloc(sizeof(XPVHV))
#define del_XPVHV(p) free((char*)p)
#define new_XPVCV() (void*)safemalloc(sizeof(XPVCV))
#define del_XPVCV(p) free((char*)p)
#define new_XPVGV() (void*)safemalloc(sizeof(XPVGV))
#define del_XPVGV(p) free((char*)p)
#define new_XPVBM() (void*)safemalloc(sizeof(XPVBM))
#define del_XPVBM(p) free((char*)p)
#define new_XPVFM() (void*)safemalloc(sizeof(XPVFM))
#define del_XPVFM(p) free((char*)p)
#define new_XPVIO() (void*)safemalloc(sizeof(XPVIO))
#define del_XPVIO(p) free((char*)p)
bool
sv_upgrade(sv, mt)
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:
nv = 0.0;
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:
nv = 0.0;
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:
nv = SvNVX(sv);
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) = 0;
AvFILL(sv) = 0;
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;
}
#ifdef DEBUGGING
char *
sv_peek(sv)
register SV *sv;
{
char *t = tokenbuf;
int unref = 0;
retry:
if (!sv) {
strcpy(t, "VOID");
goto finish;
}
else if (sv == (SV*)0x55555555 || SvTYPE(sv) == 'U') {
strcpy(t, "WILD");
goto finish;
}
else if (sv == &sv_undef || sv == &sv_no || sv == &sv_yes) {
if (sv == &sv_undef) {
strcpy(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 == &sv_no) {
strcpy(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 {
strcpy(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;
}
t += strlen(t);
*t++ = ':';
}
else if (SvREFCNT(sv) == 0) {
*t++ = '(';
unref++;
}
if (SvROK(sv)) {
*t++ = '\\';
if (t - tokenbuf + unref > 10) {
strcpy(tokenbuf + unref + 3,"...");
goto finish;
}
sv = (SV*)SvRV(sv);
goto retry;
}
switch (SvTYPE(sv)) {
default:
strcpy(t,"FREED");
goto finish;
case SVt_NULL:
strcpy(t,"UNDEF");
return tokenbuf;
case SVt_IV:
strcpy(t,"IV");
break;
case SVt_NV:
strcpy(t,"NV");
break;
case SVt_RV:
strcpy(t,"RV");
break;
case SVt_PV:
strcpy(t,"PV");
break;
case SVt_PVIV:
strcpy(t,"PVIV");
break;
case SVt_PVNV:
strcpy(t,"PVNV");
break;
case SVt_PVMG:
strcpy(t,"PVMG");
break;
case SVt_PVLV:
strcpy(t,"PVLV");
break;
case SVt_PVAV:
strcpy(t,"AV");
break;
case SVt_PVHV:
strcpy(t,"HV");
break;
case SVt_PVCV:
if (CvGV(sv))
sprintf(t, "CV(%s)", GvNAME(CvGV(sv)));
else
strcpy(t, "CV()");
goto finish;
case SVt_PVGV:
strcpy(t,"GV");
break;
case SVt_PVBM:
strcpy(t,"BM");
break;
case SVt_PVFM:
strcpy(t,"FM");
break;
case SVt_PVIO:
strcpy(t,"IO");
break;
}
t += strlen(t);
if (SvPOKp(sv)) {
if (!SvPVX(sv))
strcpy(t, "(null)");
if (SvOOK(sv))
sprintf(t,"(%ld+\"%.127s\")",(long)SvIVX(sv),SvPVX(sv));
else
sprintf(t,"(\"%.127s\")",SvPVX(sv));
}
else if (SvNOKp(sv))
sprintf(t,"(%g)",SvNVX(sv));
else if (SvIOKp(sv))
sprintf(t,"(%ld)",(long)SvIVX(sv));
else
strcpy(t,"()");
finish:
if (unref) {
t += strlen(t);
while (unref--)
*t++ = ')';
*t = '\0';
}
return tokenbuf;
}
#endif
int
sv_backoff(sv)
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 *
sv_grow(sv,newlen)
register SV *sv;
#ifndef DOSISH
register I32 newlen;
#else
unsigned long newlen;
#endif
{
register char *s;
#ifdef MSDOS
if (newlen >= 0x10000) {
fprintf(stderr, "Allocation too large: %lx\n", newlen);
my_exit(1);
}
#endif /* MSDOS */
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 */
}
else
s = SvPVX(sv);
if (newlen > SvLEN(sv)) { /* need more room? */
if (SvLEN(sv) && s)
Renew(s,newlen,char);
else
New(703,s,newlen,char);
SvPV_set(sv, s);
SvLEN_set(sv, newlen);
}
return s;
}
void
sv_setiv(sv,i)
register SV *sv;
IV i;
{
if (SvTHINKFIRST(sv)) {
if (SvREADONLY(sv) && curcop != &compiling)
croak(no_modify);
if (SvROK(sv))
sv_unref(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:
croak("Can't coerce %s to integer in %s", sv_reftype(sv,0),
op_name[op->op_type]);
}
(void)SvIOK_only(sv); /* validate number */
SvIVX(sv) = i;
SvTAINT(sv);
}
void
sv_setnv(sv,num)
register SV *sv;
double num;
{
if (SvTHINKFIRST(sv)) {
if (SvREADONLY(sv) && curcop != &compiling)
croak(no_modify);
if (SvROK(sv))
sv_unref(sv);
}
switch (SvTYPE(sv)) {
case SVt_NULL:
case SVt_IV:
sv_upgrade(sv, SVt_NV);
break;
case SVt_NV:
case SVt_RV:
case SVt_PV:
case SVt_PVIV:
sv_upgrade(sv, SVt_PVNV);
/* FALL THROUGH */
case SVt_PVNV:
case SVt_PVMG:
case SVt_PVBM:
case SVt_PVLV:
if (SvOOK(sv))
(void)SvOOK_off(sv);
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:
croak("Can't coerce %s to number in %s", sv_reftype(sv,0),
op_name[op->op_type]);
}
SvNVX(sv) = num;
(void)SvNOK_only(sv); /* validate number */
SvTAINT(sv);
}
static void
not_a_number(sv)
SV *sv;
{
char tmpbuf[64];
char *d = tmpbuf;
char *s;
int i;
for (s = SvPVX(sv), i = 50; *s && i; s++,i--) {
int ch = *s;
if (ch & 128 && !isprint(ch)) {
*d++ = 'M';
*d++ = '-';
ch &= 127;
}
if (isprint(ch))
*d++ = ch;
else {
*d++ = '^';
*d++ = ch ^ 64;
}
}
if (*s) {
*d++ = '.';
*d++ = '.';
*d++ = '.';
}
*d = '\0';
if (op)
warn("Argument \"%s\" isn't numeric in %s", tmpbuf,
op_name[op->op_type]);
else
warn("Argument \"%s\" isn't numeric", tmpbuf);
}
IV
sv_2iv(sv)
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)) {
if (dowarn && !looks_like_number(sv))
not_a_number(sv);
return (IV)atol(SvPVX(sv));
}
if (!SvROK(sv)) {
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)) {
if (dowarn && !looks_like_number(sv))
not_a_number(sv);
return (IV)atol(SvPVX(sv));
}
if (dowarn)
warn(warn_uninit);
return 0;
}
}
switch (SvTYPE(sv)) {
case SVt_NULL:
sv_upgrade(sv, SVt_IV);
return SvIVX(sv);
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
SvIVX(sv) = (IV) U_V(SvNVX(sv));
}
else if (SvPOKp(sv) && SvLEN(sv)) {
if (dowarn && !looks_like_number(sv))
not_a_number(sv);
(void)SvIOK_on(sv);
SvIVX(sv) = (IV)atol(SvPVX(sv));
}
else {
if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
warn(warn_uninit);
return 0;
}
DEBUG_c(fprintf(stderr,"0x%lx 2iv(%ld)\n",
(unsigned long)sv,(long)SvIVX(sv)));
return SvIVX(sv);
}
double
sv_2nv(sv)
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 (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
not_a_number(sv);
return atof(SvPVX(sv));
}
if (SvIOKp(sv))
return (double)SvIVX(sv);
if (!SvROK(sv)) {
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 (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
not_a_number(sv);
return atof(SvPVX(sv));
}
if (SvIOKp(sv))
return (double)SvIVX(sv);
if (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(fprintf(stderr,"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 (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
not_a_number(sv);
SvNVX(sv) = atof(SvPVX(sv));
}
else {
if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
warn(warn_uninit);
return 0.0;
}
SvNOK_on(sv);
DEBUG_c(fprintf(stderr,"0x%lx 2nv(%g)\n",(unsigned long)sv,SvNVX(sv)));
return SvNVX(sv);
}
char *
sv_2pv(sv, lp)
register SV *sv;
STRLEN *lp;
{
register char *s;
int olderrno;
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(tokenbuf,"%ld",(long)SvIVX(sv));
goto tokensave;
}
if (SvNOKp(sv)) {
Gconvert(SvNVX(sv), DBL_DIG, 0, tokenbuf);
goto tokensave;
}
if (!SvROK(sv)) {
*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 {
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_PVBM:
case SVt_PVMG: 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 = "FORMATLINE"; break;
case SVt_PVIO: s = "FILEHANDLE"; break;
default: s = "UNKNOWN"; break;
}
if (SvOBJECT(sv))
sprintf(tokenbuf, "%s=%s(0x%lx)",
HvNAME(SvSTASH(sv)), s, (unsigned long)sv);
else
sprintf(tokenbuf, "%s(0x%lx)", s, (unsigned long)sv);
goto tokensaveref;
}
*lp = strlen(s);
return s;
}
if (SvREADONLY(sv)) {
if (SvNOKp(sv)) {
Gconvert(SvNVX(sv), DBL_DIG, 0, tokenbuf);
goto tokensave;
}
if (SvIOKp(sv)) {
(void)sprintf(tokenbuf,"%ld",(long)SvIVX(sv));
goto tokensave;
}
if (dowarn)
warn(warn_uninit);
*lp = 0;
return "";
}
}
if (!SvUPGRADE(sv, SVt_PV))
return 0;
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*/
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--;
#endif
}
else if (SvIOKp(sv)) {
if (SvTYPE(sv) < SVt_PVIV)
sv_upgrade(sv, SVt_PVIV);
SvGROW(sv, 11);
s = SvPVX(sv);
olderrno = errno; /* some Xenix systems wipe out errno here */
(void)sprintf(s,"%ld",(long)SvIVX(sv));
errno = olderrno;
while (*s) s++;
}
else {
if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
warn(warn_uninit);
*lp = 0;
return "";
}
*s = '\0';
*lp = s - SvPVX(sv);
SvCUR_set(sv, *lp);
SvPOK_on(sv);
DEBUG_c(fprintf(stderr,"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:
sv = sv_newmortal();
*lp = strlen(tokenbuf);
sv_setpvn(sv, tokenbuf, *lp);
return SvPVX(sv);
}
else {
STRLEN len;
#ifdef FIXNEGATIVEZERO
if (*tokenbuf == '-' && tokenbuf[1] == '0' && !tokenbuf[2])
strcpy(tokenbuf,"0");
#endif
(void)SvUPGRADE(sv, SVt_PV);
len = *lp = strlen(tokenbuf);
s = SvGROW(sv, len + 1);
SvCUR_set(sv, len);
(void)strcpy(s, tokenbuf);
/* NO SvPOK_on(sv) here! */
return s;
}
}
/* This function is only called on magical items */
bool
sv_2bool(sv)
register SV *sv;
{
if (SvGMAGICAL(sv))
mg_get(sv);
if (!SvOK(sv))
return 0;
if (SvROK(sv)) {
#ifdef OVERLOAD
{
SV* tmpsv;
if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_)))
return SvTRUE(tmpsv);
}
#endif /* OVERLOAD */
return SvRV(sv) != 0;
}
if (SvPOKp(sv)) {
register XPV* Xpv;
if ((Xpv = (XPV*)SvANY(sv)) &&
(*Xpv->xpv_pv > '0' ||
Xpv->xpv_cur > 1 ||
(Xpv->xpv_cur && *Xpv->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(dstr,sstr)
SV *dstr;
register SV *sstr;
{
register U32 sflags;
register int dtype;
register int stype;
if (sstr == dstr)
return;
if (SvTHINKFIRST(dstr)) {
if (SvREADONLY(dstr) && curcop != &compiling)
croak(no_modify);
if (SvROK(dstr))
sv_unref(dstr);
}
if (!sstr)
sstr = &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:
(void)SvOK_off(dstr);
return;
case SVt_IV:
if (dtype <= SVt_PV) {
if (dtype < SVt_IV)
sv_upgrade(dstr, SVt_IV);
else if (dtype == SVt_NV)
sv_upgrade(dstr, SVt_PVNV);
else if (dtype <= SVt_PV)
sv_upgrade(dstr, SVt_PVIV);
}
break;
case SVt_NV:
if (dtype <= SVt_PVIV) {
if (dtype < SVt_NV)
sv_upgrade(dstr, SVt_NV);
else if (dtype == SVt_PVIV)
sv_upgrade(dstr, SVt_PVNV);
else if (dtype <= SVt_PV)
sv_upgrade(dstr, SVt_PVNV);
}
break;
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 (curcop->cop_stash != GvSTASH(dstr))
GvIMPORTED_on(dstr);
GvMULTI_on(dstr);
return;
}
goto glob_assign;
}
break;
case SVt_PV:
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_PVLV:
sv_upgrade(dstr, SVt_PVNV);
break;
case SVt_PVAV:
case SVt_PVHV:
case SVt_PVCV:
case SVt_PVIO:
if (op)
croak("Bizarre copy of %s in %s", sv_reftype(sstr, 0),
op_name[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) = GvSTASH(sstr);
GvNAME(dstr) = savepvn(name, len);
GvNAMELEN(dstr) = len;
SvFAKE_on(dstr); /* can coerce to non-glob */
}
(void)SvOK_off(dstr);
GvINTRO_off(dstr); /* one-shot flag */
gp_free(dstr);
GvGP(dstr) = gp_ref(GvGP(sstr));
SvTAINT(dstr);
if (curcop->cop_stash != GvSTASH(dstr))
GvIMPORTED_on(dstr);
GvMULTI_on(dstr);
return;
}
/* FALL THROUGH */
default:
if (dtype < stype)
sv_upgrade(dstr, stype);
if (SvGMAGICAL(sstr))
mg_get(sstr);
}
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;
GvREFCNT(dstr) = 1;
GvSV(dstr) = NEWSV(72,0);
GvLINE(dstr) = curcop->cop_line;
GvEGV(dstr) = 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 (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 (curcop->cop_stash != GvSTASH(dstr))
GvIMPORTED_HV_on(dstr);
break;
case SVt_PVCV:
if (intro)
SAVESPTR(GvCV(dstr));
else {
CV* cv = GvCV(dstr);
if (cv) {
dref = (SV*)cv;
if (dowarn && sref != dref &&
!GvCVGEN((GV*)dstr) &&
(CvROOT(cv) || CvXSUB(cv)) )
warn("Subroutine %s redefined",
GvENAME((GV*)dstr));
SvFAKE_on(cv);
}
}
if (GvCV(dstr) != (CV*)sref) {
GvCV(dstr) = (CV*)sref;
GvASSUMECV_on(dstr);
}
if (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 (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)) {
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? */
!(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 {
(void)SvOK_off(dstr);
}
SvTAINT(dstr);
}
void
sv_setpvn(sv,ptr,len)
register SV *sv;
register char *ptr;
register STRLEN len;
{
assert(len >= 0);
if (SvTHINKFIRST(sv)) {
if (SvREADONLY(sv) && curcop != &compiling)
croak(no_modify);
if (SvROK(sv))
sv_unref(sv);
}
if (!ptr) {
(void)SvOK_off(sv);
return;
}
if (SvTYPE(sv) >= SVt_PV) {
if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
sv_unglob(sv);
}
else if (!sv_upgrade(sv, SVt_PV))
return;
SvGROW(sv, len + 1);
Move(ptr,SvPVX(sv),len,char);
SvCUR_set(sv, len);
*SvEND(sv) = '\0';
(void)SvPOK_only(sv); /* validate pointer */
SvTAINT(sv);
}
void
sv_setpv(sv,ptr)
register SV *sv;
register char *ptr;
{
register STRLEN len;
if (SvTHINKFIRST(sv)) {
if (SvREADONLY(sv) && curcop != &compiling)
croak(no_modify);
if (SvROK(sv))
sv_unref(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 if (!sv_upgrade(sv, SVt_PV))
return;
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_usepvn(sv,ptr,len)
register SV *sv;
register char *ptr;
register STRLEN len;
{
if (SvTHINKFIRST(sv)) {
if (SvREADONLY(sv) && curcop != &compiling)
croak(no_modify);
if (SvROK(sv))
sv_unref(sv);
}
if (!SvUPGRADE(sv, SVt_PV))
return;
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_chop(sv,ptr) /* like set but assuming ptr is in sv */
register SV *sv;
register char *ptr;
{
register STRLEN delta;
if (!ptr || !SvPOKp(sv))
return;
if (SvTHINKFIRST(sv)) {
if (SvREADONLY(sv) && curcop != &compiling)
croak(no_modify);
if (SvROK(sv))
sv_unref(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(sv,ptr,len)
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_catsv(dstr,sstr)
SV *dstr;
register SV *sstr;
{
char *s;
STRLEN len;
if (!sstr)
return;
if (s = SvPV(sstr, len))
sv_catpvn(dstr,s,len);
}
void
sv_catpv(sv,ptr)
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);
}
SV *
#ifdef LEAKTEST
newSV(x,len)
I32 x;
#else
newSV(len)
#endif
STRLEN len;
{
register SV *sv;
new_SV();
SvANY(sv) = 0;
SvREFCNT(sv) = 1;
SvFLAGS(sv) = 0;
if (len) {
sv_upgrade(sv, SVt_PV);
SvGROW(sv, len + 1);
}
return sv;
}
void
sv_magic(sv, obj, how, name, namlen)
register SV *sv;
SV *obj;
int how;
char *name;
I32 namlen;
{
MAGIC* mg;
if (SvREADONLY(sv) && curcop != &compiling && !strchr("gB", 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 {
if (!SvUPGRADE(sv, SVt_PVMG))
return;
}
Newz(702,mg, 1, MAGIC);
mg->mg_moremagic = SvMAGIC(sv);
SvMAGIC(sv) = mg;
if (!obj || obj == sv || how == '#')
mg->mg_obj = obj;
else {
mg->mg_obj = SvREFCNT_inc(obj);
mg->mg_flags |= MGf_REFCOUNTED;
}
mg->mg_type = how;
mg->mg_len = namlen;
if (name && namlen >= 0)
mg->mg_ptr = savepvn(name, namlen);
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 '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 'L':
SvRMAGICAL_on(sv);
mg->mg_virtual = 0;
break;
case 'l':
mg->mg_virtual = &vtbl_dbline;
break;
case 'P':
mg->mg_virtual = &vtbl_pack;
break;
case 'p':
case 'q':
mg->mg_virtual = &vtbl_packelem;
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 '*':
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, type)
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)
(*vtbl->svt_free)(sv, mg);
if (mg->mg_ptr && mg->mg_type != 'g')
Safefree(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(bigstr,offset,len,little,littlelen)
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;
if (!bigstr)
croak("Can't modify non-existent substring");
SvPV_force(bigstr, na);
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(sv,nsv)
register SV *sv;
register SV *nsv;
{
U32 refcnt = SvREFCNT(sv);
if (SvTHINKFIRST(sv)) {
if (SvREADONLY(sv) && curcop != &compiling)
croak(no_modify);
if (SvROK(sv))
sv_unref(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);
StructCopy(nsv,sv,SV);
SvREFCNT(sv) = refcnt;
del_SV(nsv);
}
void
sv_clear(sv)
register SV *sv;
{
assert(sv);
assert(SvREFCNT(sv) == 0);
if (SvOBJECT(sv)) {
dSP;
GV* destructor;
if (defstash) { /* Still have a symbol table? */
destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
ENTER;
SAVEFREESV(SvSTASH(sv));
if (destructor && GvCV(destructor)) {
SV ref;
Zero(&ref, 1, SV);
sv_upgrade(&ref, SVt_RV);
SAVEI32(SvREFCNT(sv));
SvRV(&ref) = SvREFCNT_inc(sv);
SvROK_on(&ref);
EXTEND(SP, 2);
PUSHMARK(SP);
PUSHs(&ref);
PUTBACK;
perl_call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR);
del_XRV(SvANY(&ref));
}
LEAVE;
}
else
SvREFCNT_dec(SvSTASH(sv));
if (SvOBJECT(sv)) {
SvOBJECT_off(sv); /* Curse the object. */
if (SvTYPE(sv) != SVt_PVIO)
--sv_objcount; /* XXX Might want something more general */
}
}
if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
mg_free(sv);
switch (SvTYPE(sv)) {
case SVt_PVIO:
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_PVGV:
gp_free(sv);
Safefree(GvNAME(sv));
/* FALL THROUGH */
case SVt_PVLV:
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))
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));
break;
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* sv;
{
if (sv)
SvREFCNT(sv)++;
return sv;
}
void
sv_free(sv)
SV *sv;
{
if (!sv)
return;
if (SvREADONLY(sv)) {
if (sv == &sv_undef || sv == &sv_yes || sv == &sv_no)
return;
}
if (SvREFCNT(sv) == 0) {
if (SvFLAGS(sv) & SVf_BREAK)
return;
warn("Attempt to free unreferenced scalar");
return;
}
if (--SvREFCNT(sv) > 0)
return;
#ifdef DEBUGGING
if (SvTEMP(sv)) {
warn("Attempt to free temp prematurely");
return;
}
#endif
sv_clear(sv);
del_SV(sv);
}
STRLEN
sv_len(sv)
register SV *sv;
{
char *junk;
STRLEN len;
if (!sv)
return 0;
if (SvGMAGICAL(sv))
len = mg_len(sv);
else
junk = SvPV(sv, len);
return len;
}
I32
sv_eq(str1,str2)
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 !bcmp(pv1, pv2, cur1);
}
I32
sv_cmp(str1,str2)
register SV *str1;
register SV *str2;
{
I32 retval;
char *pv1;
STRLEN cur1;
char *pv2;
STRLEN cur2;
if (!str1) {
pv1 = "";
cur1 = 0;
}
else
pv1 = SvPV(str1, cur1);
if (!str2) {
pv2 = "";
cur2 = 0;
}
else
pv2 = SvPV(str2, cur2);
if (!cur1)
return cur2 ? -1 : 0;
if (!cur2)
return 1;
if (cur1 < cur2) {
/*SUPPRESS 560*/
if (retval = memcmp((void*)pv1, (void*)pv2, cur1))
return retval < 0 ? -1 : 1;
else
return -1;
}
/*SUPPRESS 560*/
else if (retval = memcmp((void*)pv1, (void*)pv2, cur2))
return retval < 0 ? -1 : 1;
else if (cur1 == cur2)
return 0;
else
return 1;
}
char *
sv_gets(sv,fp,append)
register SV *sv;
register FILE *fp;
I32 append;
{
char *rsptr;
STRLEN rslen;
register STDCHAR rslast;
register STDCHAR *bp;
register I32 cnt;
I32 i;
#ifdef FAST_SV_GETS
/*
* 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;
#endif
if (SvTHINKFIRST(sv)) {
if (SvREADONLY(sv) && curcop != &compiling)
croak(no_modify);
if (SvROK(sv))
sv_unref(sv);
}
if (!SvUPGRADE(sv, SVt_PV))
return 0;
if (RsSNARF(rs)) {
rsptr = NULL;
rslen = 0;
}
else if (RsPARA(rs)) {
rsptr = "\n\n";
rslen = 2;
}
else
rsptr = SvPV(rs, rslen);
rslast = rslen ? rsptr[rslen - 1] : '\0';
if (RsPARA(rs)) { /* have to do this both before and after */
do { /* to make sure file boundaries work right */
if (feof(fp))
return 0;
i = getc(fp);
if (i != '\n') {
if (i == -1)
return 0;
ungetc(i,fp);
break;
}
} while (i != EOF);
}
#ifdef FAST_SV_GETS
/* Here is some breathtakingly efficient cheating */
cnt = FILE_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;
SvGROW(sv, append+cnt+2);/* (remembering cnt can be -1) */
}
}
else
shortbuffered = 0;
bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
ptr = FILE_ptr(fp);
for (;;) {
screamer:
if (cnt > 0) {
if (rslen) {
while (--cnt >= 0) { /* this | eat */
if ((*bp++ = *ptr++) == rslast) /* really | dust */
goto thats_all_folks; /* screams | sed :-) */
}
}
else {
memcpy((char*)bp, (char*)ptr, cnt); /* 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;
}
FILE_cnt(fp) = cnt; /* deregisterize cnt and ptr */
FILE_ptr(fp) = ptr;
i = _filbuf(fp); /* get more characters */
cnt = FILE_cnt(fp);
ptr = FILE_ptr(fp); /* reregisterize cnt and ptr */
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 _filbuf */
if (rslen && (STDCHAR)i == rslast) /* all done for now? */
goto thats_all_folks;
}
thats_all_folks:
if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
bcmp((char*)bp - rslen, rsptr, rslen))
goto screamer; /* go back to the fray */
thats_really_all_folks:
if (shortbuffered)
cnt += shortbuffered;
FILE_cnt(fp) = cnt; /* put these back or we're in trouble */
FILE_ptr(fp) = ptr;
*bp = '\0';
SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
#else /* SV_FAST_GETS */
/*The big, slow, and stupid way */
{
STDCHAR buf[8192];
screamer:
if (rslen) {
register STDCHAR *bpe = buf + sizeof(buf);
bp = buf;
while ((i = getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
; /* keep reading */
cnt = bp - buf;
}
else {
cnt = fread((char*)buf, 1, sizeof(buf), fp);
i = cnt ? (U8)buf[cnt - 1] : EOF;
}
if (append)
sv_catpvn(sv, buf, cnt);
else
sv_setpvn(sv, buf, cnt);
if (i != EOF && /* joy */
(!rslen ||
SvCUR(sv) < rslen ||
bcmp(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
{
append = -1;
goto screamer;
}
}
#endif /* SV_FAST_GETS */
if (RsPARA(rs)) { /* have to do this both before and after */
while (i != EOF) { /* to make sure file boundaries work right */
i = getc(fp);
if (i != '\n') {
ungetc(i,fp);
break;
}
}
}
return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
}
void
sv_inc(sv)
register SV *sv;
{
register char *d;
int flags;
if (!sv)
return;
if (SvTHINKFIRST(sv)) {
if (SvREADONLY(sv) && curcop != &compiling)
croak(no_modify);
if (SvROK(sv)) {
#ifdef OVERLOAD
if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) return;
#endif /* OVERLOAD */
sv_unref(sv);
}
}
if (SvGMAGICAL(sv))
mg_get(sv);
flags = SvFLAGS(sv);
if (flags & SVp_IOK) {
(void)SvIOK_only(sv);
++SvIVX(sv);
return;
}
if (flags & SVp_NOK) {
SvNVX(sv) += 1.0;
(void)SvNOK_only(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) {
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 {
++*d;
if (isALPHA(*d))
return;
*(d--) -= 'z' - 'a' + 1;
}
}
/* 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(sv)
register SV *sv;
{
int flags;
if (!sv)
return;
if (SvTHINKFIRST(sv)) {
if (SvREADONLY(sv) && curcop != &compiling)
croak(no_modify);
if (SvROK(sv)) {
#ifdef OVERLOAD
if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) return;
#endif /* OVERLOAD */
sv_unref(sv);
}
}
if (SvGMAGICAL(sv))
mg_get(sv);
flags = SvFLAGS(sv);
if (flags & SVp_IOK) {
(void)SvIOK_only(sv);
--SvIVX(sv);
return;
}
if (flags & SVp_NOK) {
SvNVX(sv) -= 1.0;
(void)SvNOK_only(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;
}
sv_setnv(sv,atof(SvPVX(sv)) - 1.0);
}
/* 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()
{
tmps_max += 128;
Renew(tmps_stack, tmps_max, SV*);
}
SV *
sv_mortalcopy(oldstr)
SV *oldstr;
{
register SV *sv;
new_SV();
SvANY(sv) = 0;
SvREFCNT(sv) = 1;
SvFLAGS(sv) = 0;
sv_setsv(sv,oldstr);
if (++tmps_ix >= tmps_max)
sv_mortalgrow();
tmps_stack[tmps_ix] = sv;
SvTEMP_on(sv);
return sv;
}
SV *
sv_newmortal()
{
register SV *sv;
new_SV();
SvANY(sv) = 0;
SvREFCNT(sv) = 1;
SvFLAGS(sv) = SVs_TEMP;
if (++tmps_ix >= tmps_max)
sv_mortalgrow();
tmps_stack[tmps_ix] = sv;
return sv;
}
/* same thing without the copying */
SV *
sv_2mortal(sv)
register SV *sv;
{
if (!sv)
return sv;
if (SvREADONLY(sv) && curcop != &compiling)
croak(no_modify);
if (++tmps_ix >= tmps_max)
sv_mortalgrow();
tmps_stack[tmps_ix] = sv;
SvTEMP_on(sv);
return sv;
}
SV *
newSVpv(s,len)
char *s;
STRLEN len;
{
register SV *sv;
new_SV();
SvANY(sv) = 0;
SvREFCNT(sv) = 1;
SvFLAGS(sv) = 0;
if (!len)
len = strlen(s);
sv_setpvn(sv,s,len);
return sv;
}
SV *
newSVnv(n)
double n;
{
register SV *sv;
new_SV();
SvANY(sv) = 0;
SvREFCNT(sv) = 1;
SvFLAGS(sv) = 0;
sv_setnv(sv,n);
return sv;
}
SV *
newSViv(i)
IV i;
{
register SV *sv;
new_SV();
SvANY(sv) = 0;
SvREFCNT(sv) = 1;
SvFLAGS(sv) = 0;
sv_setiv(sv,i);
return sv;
}
SV *
newRV(ref)
SV *ref;
{
register SV *sv;
new_SV();
SvANY(sv) = 0;
SvREFCNT(sv) = 1;
SvFLAGS(sv) = 0;
sv_upgrade(sv, SVt_RV);
SvTEMP_off(ref);
SvRV(sv) = SvREFCNT_inc(ref);
SvROK_on(sv);
return sv;
}
/* make an exact duplicate of old */
SV *
newSVsv(old)
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();
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(s,stash)
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 (!*s) { /* reset ?? searches */
for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
pm->op_pmflags &= ~PMf_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 = entry->hent_next) {
if (!todo[(U8)*entry->hent_key])
continue;
gv = (GV*)entry->hent_val;
sv = GvSV(gv);
(void)SvOK_off(sv);
if (SvTYPE(sv) >= SVt_PV) {
SvCUR_set(sv, 0);
SvTAINT(sv);
if (SvPVX(sv) != Nullch)
*SvPVX(sv) = '\0';
}
if (GvAV(gv)) {
av_clear(GvAV(gv));
}
if (GvHV(gv)) {
if (HvNAME(GvHV(gv)))
continue;
hv_clear(GvHV(gv));
#ifndef VMS /* VMS has no environ array */
if (gv == envgv)
environ[0] = Nullch;
#endif
}
}
}
}
}
CV *
sv_2cv(sv, st, gvp, lref)
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, na), lref, SVt_PVCV);
*gvp = gv;
if (!gv)
return Nullcv;
*st = GvESTASH(gv);
fix_gv:
if (lref && !GvCV(gv)) {
SV *tmpsv;
ENTER;
tmpsv = NEWSV(704,0);
gv_efullname(tmpsv, gv);
newSUB(start_subparse(),
newSVOP(OP_CONST, 0, tmpsv),
Nullop,
Nullop);
LEAVE;
if (!GvCV(gv))
croak("Unable to create sub named \"%s\"", SvPV(sv,na));
}
return GvCV(gv);
}
}
#ifndef SvTRUE
I32
SvTRUE(sv)
register SV *sv;
{
if (!sv)
return 0;
if (SvGMAGICAL(sv))
mg_get(sv);
if (SvPOK(sv)) {
register XPV* Xpv;
if ((Xpv = (XPV*)SvANY(sv)) &&
(*Xpv->xpv_pv > '0' ||
Xpv->xpv_cur > 1 ||
(Xpv->xpv_cur && *Xpv->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);
}
}
}
#endif /* SvTRUE */
#ifndef SvIV
IV SvIV(Sv)
register SV *Sv;
{
if (SvIOK(Sv))
return SvIVX(Sv);
return sv_2iv(Sv);
}
#endif /* SvIV */
#ifndef SvNV
double SvNV(Sv)
register SV *Sv;
{
if (SvNOK(Sv))
return SvNVX(Sv);
if (SvIOK(Sv))
return (double)SvIVX(Sv);
return sv_2nv(Sv);
}
#endif /* SvNV */
#ifdef CRIPPLED_CC
char *
sv_pvn(sv, lp)
SV *sv;
STRLEN *lp;
{
if (SvPOK(sv)) {
*lp = SvCUR(sv);
return SvPVX(sv);
}
return sv_2pv(sv, lp);
}
#endif
char *
sv_pvn_force(sv, lp)
SV *sv;
STRLEN *lp;
{
char *s;
if (SvREADONLY(sv) && curcop != &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
croak("Can't coerce %s to string in %s", sv_reftype(sv,0),
op_name[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(fprintf(stderr,"0x%lx 2pv(%s)\n",
(unsigned long)sv,SvPVX(sv)));
}
}
return SvPVX(sv);
}
char *
sv_reftype(sv, ob)
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 "FORMLINE";
default: return "UNKNOWN";
}
}
}
int
sv_isobject(sv)
SV *sv;
{
if (!SvROK(sv))
return 0;
sv = (SV*)SvRV(sv);
if (!SvOBJECT(sv))
return 0;
return 1;
}
int
sv_isa(sv, name)
SV *sv;
char *name;
{
if (!SvROK(sv))
return 0;
sv = (SV*)SvRV(sv);
if (!SvOBJECT(sv))
return 0;
return strEQ(HvNAME(SvSTASH(sv)), name);
}
SV*
newSVrv(rv, classname)
SV *rv;
char *classname;
{
SV *sv;
new_SV();
SvANY(sv) = 0;
SvREFCNT(sv) = 0;
SvFLAGS(sv) = 0;
sv_upgrade(rv, SVt_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(rv, classname, pv)
SV *rv;
char *classname;
void* pv;
{
if (!pv)
sv_setsv(rv, &sv_undef);
else
sv_setiv(newSVrv(rv,classname), (IV)pv);
return rv;
}
SV*
sv_setref_iv(rv, classname, iv)
SV *rv;
char *classname;
IV iv;
{
sv_setiv(newSVrv(rv,classname), iv);
return rv;
}
SV*
sv_setref_nv(rv, classname, nv)
SV *rv;
char *classname;
double nv;
{
sv_setnv(newSVrv(rv,classname), nv);
return rv;
}
SV*
sv_setref_pvn(rv, classname, pv, n)
SV *rv;
char *classname;
char* pv;
I32 n;
{
sv_setpvn(newSVrv(rv,classname), pv, n);
return rv;
}
SV*
sv_bless(sv,stash)
SV* sv;
HV* stash;
{
SV *ref;
if (!SvROK(sv))
croak("Can't bless non-reference value");
ref = SvRV(sv);
if (SvFLAGS(ref) & (SVs_OBJECT|SVf_READONLY)) {
if (SvREADONLY(ref))
croak(no_modify);
if (SvOBJECT(ref) && SvTYPE(ref) != SVt_PVIO)
--sv_objcount;
}
SvOBJECT_on(ref);
++sv_objcount;
(void)SvUPGRADE(ref, SVt_PVMG);
SvSTASH(ref) = (HV*)SvREFCNT_inc(stash);
#ifdef OVERLOAD
SvAMAGIC_off(sv);
if (Gv_AMG(stash)) {
SvAMAGIC_on(sv);
}
#endif /* OVERLOAD */
return sv;
}
static void
sv_unglob(sv)
SV* sv;
{
assert(SvTYPE(sv) == SVt_PVGV);
SvFAKE_off(sv);
if (GvGP(sv))
gp_free(sv);
sv_unmagic(sv, '*');
Safefree(GvNAME(sv));
GvMULTI_off(sv);
SvFLAGS(sv) &= ~SVTYPEMASK;
SvFLAGS(sv) |= SVt_PVMG;
}
void
sv_unref(sv)
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 */
}
#ifdef DEBUGGING
void
sv_dump(sv)
SV* sv;
{
char tmpbuf[1024];
char *d = tmpbuf;
U32 flags;
U32 type;
if (!sv) {
fprintf(stderr, "SV = 0\n");
return;
}
flags = SvFLAGS(sv);
type = SvTYPE(sv);
sprintf(d, "(0x%lx)\n REFCNT = %ld\n FLAGS = (",
(unsigned long)SvANY(sv), (long)SvREFCNT(sv));
d += strlen(d);
if (flags & SVs_PADBUSY) strcat(d, "PADBUSY,");
if (flags & SVs_PADTMP) strcat(d, "PADTMP,");
if (flags & SVs_PADMY) strcat(d, "PADMY,");
if (flags & SVs_TEMP) strcat(d, "TEMP,");
if (flags & SVs_OBJECT) strcat(d, "OBJECT,");
if (flags & SVs_GMG) strcat(d, "GMG,");
if (flags & SVs_SMG) strcat(d, "SMG,");
if (flags & SVs_RMG) strcat(d, "RMG,");
d += strlen(d);
if (flags & SVf_IOK) strcat(d, "IOK,");
if (flags & SVf_NOK) strcat(d, "NOK,");
if (flags & SVf_POK) strcat(d, "POK,");
if (flags & SVf_ROK) strcat(d, "ROK,");
if (flags & SVf_OOK) strcat(d, "OOK,");
if (flags & SVf_FAKE) strcat(d, "FAKE,");
if (flags & SVf_READONLY) strcat(d, "READONLY,");
d += strlen(d);
if (flags & SVp_IOK) strcat(d, "pIOK,");
if (flags & SVp_NOK) strcat(d, "pNOK,");
if (flags & SVp_POK) strcat(d, "pPOK,");
if (flags & SVp_SCREAM) strcat(d, "SCREAM,");
d += strlen(d);
if (d[-1] == ',')
d--;
*d++ = ')';
*d = '\0';
fprintf(stderr, "SV = ");
switch (type) {
case SVt_NULL:
fprintf(stderr,"NULL%s\n", tmpbuf);
return;
case SVt_IV:
fprintf(stderr,"IV%s\n", tmpbuf);
break;
case SVt_NV:
fprintf(stderr,"NV%s\n", tmpbuf);
break;
case SVt_RV:
fprintf(stderr,"RV%s\n", tmpbuf);
break;
case SVt_PV:
fprintf(stderr,"PV%s\n", tmpbuf);
break;
case SVt_PVIV:
fprintf(stderr,"PVIV%s\n", tmpbuf);
break;
case SVt_PVNV:
fprintf(stderr,"PVNV%s\n", tmpbuf);
break;
case SVt_PVBM:
fprintf(stderr,"PVBM%s\n", tmpbuf);
break;
case SVt_PVMG:
fprintf(stderr,"PVMG%s\n", tmpbuf);
break;
case SVt_PVLV:
fprintf(stderr,"PVLV%s\n", tmpbuf);
break;
case SVt_PVAV:
fprintf(stderr,"PVAV%s\n", tmpbuf);
break;
case SVt_PVHV:
fprintf(stderr,"PVHV%s\n", tmpbuf);
break;
case SVt_PVCV:
fprintf(stderr,"PVCV%s\n", tmpbuf);
break;
case SVt_PVGV:
fprintf(stderr,"PVGV%s\n", tmpbuf);
break;
case SVt_PVFM:
fprintf(stderr,"PVFM%s\n", tmpbuf);
break;
case SVt_PVIO:
fprintf(stderr,"PVIO%s\n", tmpbuf);
break;
default:
fprintf(stderr,"UNKNOWN%s\n", tmpbuf);
return;
}
if (type >= SVt_PVIV || type == SVt_IV)
fprintf(stderr, " IV = %ld\n", (long)SvIVX(sv));
if (type >= SVt_PVNV || type == SVt_NV)
fprintf(stderr, " NV = %.*g\n", DBL_DIG, SvNVX(sv));
if (SvROK(sv)) {
fprintf(stderr, " RV = 0x%lx\n", (long)SvRV(sv));
sv_dump(SvRV(sv));
return;
}
if (type < SVt_PV)
return;
if (type <= SVt_PVLV) {
if (SvPVX(sv))
fprintf(stderr, " PV = 0x%lx \"%s\"\n CUR = %ld\n LEN = %ld\n",
(long)SvPVX(sv), SvPVX(sv), (long)SvCUR(sv), (long)SvLEN(sv));
else
fprintf(stderr, " PV = 0\n");
}
if (type >= SVt_PVMG) {
if (SvMAGIC(sv)) {
fprintf(stderr, " MAGIC = 0x%lx\n", (long)SvMAGIC(sv));
}
if (SvSTASH(sv))
fprintf(stderr, " STASH = %s\n", HvNAME(SvSTASH(sv)));
}
switch (type) {
case SVt_PVLV:
fprintf(stderr, " TYPE = %c\n", LvTYPE(sv));
fprintf(stderr, " TARGOFF = %ld\n", (long)LvTARGOFF(sv));
fprintf(stderr, " TARGLEN = %ld\n", (long)LvTARGLEN(sv));
fprintf(stderr, " TARG = 0x%lx\n", (long)LvTARG(sv));
sv_dump(LvTARG(sv));
break;
case SVt_PVAV:
fprintf(stderr, " ARRAY = 0x%lx\n", (long)AvARRAY(sv));
fprintf(stderr, " ALLOC = 0x%lx\n", (long)AvALLOC(sv));
fprintf(stderr, " FILL = %ld\n", (long)AvFILL(sv));
fprintf(stderr, " MAX = %ld\n", (long)AvMAX(sv));
fprintf(stderr, " ARYLEN = 0x%lx\n", (long)AvARYLEN(sv));
flags = AvFLAGS(sv);
d = tmpbuf;
if (flags & AVf_REAL) strcat(d, "REAL,");
if (flags & AVf_REIFY) strcat(d, "REIFY,");
if (flags & AVf_REUSED) strcat(d, "REUSED,");
if (*d)
d[strlen(d)-1] = '\0';
fprintf(stderr, " FLAGS = (%s)\n", d);
break;
case SVt_PVHV:
fprintf(stderr, " ARRAY = 0x%lx\n",(long)HvARRAY(sv));
fprintf(stderr, " KEYS = %ld\n", (long)HvKEYS(sv));
fprintf(stderr, " FILL = %ld\n", (long)HvFILL(sv));
fprintf(stderr, " MAX = %ld\n", (long)HvMAX(sv));
fprintf(stderr, " RITER = %ld\n", (long)HvRITER(sv));
fprintf(stderr, " EITER = 0x%lx\n",(long) HvEITER(sv));
if (HvPMROOT(sv))
fprintf(stderr, " PMROOT = 0x%lx\n",(long)HvPMROOT(sv));
if (HvNAME(sv))
fprintf(stderr, " NAME = \"%s\"\n", HvNAME(sv));
break;
case SVt_PVFM:
case SVt_PVCV:
fprintf(stderr, " STASH = 0x%lx\n", (long)CvSTASH(sv));
fprintf(stderr, " START = 0x%lx\n", (long)CvSTART(sv));
fprintf(stderr, " ROOT = 0x%lx\n", (long)CvROOT(sv));
fprintf(stderr, " XSUB = 0x%lx\n", (long)CvXSUB(sv));
fprintf(stderr, " XSUBANY = %ld\n", (long)CvXSUBANY(sv).any_i32);
fprintf(stderr, " FILEGV = 0x%lx\n", (long)CvFILEGV(sv));
fprintf(stderr, " DEPTH = %ld\n", (long)CvDEPTH(sv));
fprintf(stderr, " PADLIST = 0x%lx\n", (long)CvPADLIST(sv));
fprintf(stderr, " OUTSIDE = 0x%lx\n", (long)CvOUTSIDE(sv));
if (type == SVt_PVFM)
fprintf(stderr, " LINES = %ld\n", (long)FmLINES(sv));
break;
case SVt_PVGV:
fprintf(stderr, " NAME = %s\n", GvNAME(sv));
fprintf(stderr, " NAMELEN = %ld\n", (long)GvNAMELEN(sv));
fprintf(stderr, " STASH = 0x%lx\n", (long)GvSTASH(sv));
fprintf(stderr, " GP = 0x%lx\n", (long)GvGP(sv));
fprintf(stderr, " SV = 0x%lx\n", (long)GvSV(sv));
fprintf(stderr, " REFCNT = %ld\n", (long)GvREFCNT(sv));
fprintf(stderr, " IO = 0x%lx\n", (long)GvIOp(sv));
fprintf(stderr, " FORM = 0x%lx\n", (long)GvFORM(sv));
fprintf(stderr, " AV = 0x%lx\n", (long)GvAV(sv));
fprintf(stderr, " HV = 0x%lx\n", (long)GvHV(sv));
fprintf(stderr, " CV = 0x%lx\n", (long)GvCV(sv));
fprintf(stderr, " CVGEN = 0x%lx\n", (long)GvCVGEN(sv));
fprintf(stderr, " LASTEXPR = %ld\n", (long)GvLASTEXPR(sv));
fprintf(stderr, " LINE = %ld\n", (long)GvLINE(sv));
fprintf(stderr, " FLAGS = 0x%x\n", (int)GvFLAGS(sv));
fprintf(stderr, " STASH = 0x%lx\n", (long)GvSTASH(sv));
fprintf(stderr, " EGV = 0x%lx\n", (long)GvEGV(sv));
break;
case SVt_PVIO:
fprintf(stderr, " IFP = 0x%lx\n", (long)IoIFP(sv));
fprintf(stderr, " OFP = 0x%lx\n", (long)IoOFP(sv));
fprintf(stderr, " DIRP = 0x%lx\n", (long)IoDIRP(sv));
fprintf(stderr, " LINES = %ld\n", (long)IoLINES(sv));
fprintf(stderr, " PAGE = %ld\n", (long)IoPAGE(sv));
fprintf(stderr, " PAGE_LEN = %ld\n", (long)IoPAGE_LEN(sv));
fprintf(stderr, " LINES_LEFT = %ld\n", (long)IoLINES_LEFT(sv));
fprintf(stderr, " TOP_NAME = %s\n", IoTOP_NAME(sv));
fprintf(stderr, " TOP_GV = 0x%lx\n", (long)IoTOP_GV(sv));
fprintf(stderr, " FMT_NAME = %s\n", IoFMT_NAME(sv));
fprintf(stderr, " FMT_GV = 0x%lx\n", (long)IoFMT_GV(sv));
fprintf(stderr, " BOTTOM_NAME = %s\n", IoBOTTOM_NAME(sv));
fprintf(stderr, " BOTTOM_GV = 0x%lx\n", (long)IoBOTTOM_GV(sv));
fprintf(stderr, " SUBPROCESS = %ld\n", (long)IoSUBPROCESS(sv));
fprintf(stderr, " TYPE = %c\n", IoTYPE(sv));
fprintf(stderr, " FLAGS = 0x%lx\n", (long)IoFLAGS(sv));
break;
}
}
#else
void
sv_dump(sv)
SV* sv;
{
}
#endif
IO*
sv_2io(sv)
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,na), FALSE, SVt_PVIO);
if (gv)
io = GvIO(gv);
else
io = 0;
if (!io)
croak("Bad filehandle: %s", SvPV(sv,na));
break;
}
return io;
}