forked from schacon/perl
/
mg.c
1250 lines (1150 loc) · 22.7 KB
/
mg.c
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/* mg.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.
*
*/
/*
* "Sam sat on the ground and put his head in his hands. 'I wish I had never
* come here, and I don't want to see no more magic,' he said, and fell silent."
*/
#include "EXTERN.h"
#include "perl.h"
/* Omit -- it causes too much grief on mixed systems.
#ifdef I_UNISTD
# include <unistd.h>
#endif
*/
void
mg_magical(sv)
SV* sv;
{
MAGIC* mg;
for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
MGVTBL* vtbl = mg->mg_virtual;
if (vtbl) {
if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP))
SvGMAGICAL_on(sv);
if (vtbl->svt_set)
SvSMAGICAL_on(sv);
if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear)
SvRMAGICAL_on(sv);
}
}
}
int
mg_get(sv)
SV* sv;
{
MAGIC* mg;
U32 savemagic = SvMAGICAL(sv) | SvREADONLY(sv);
assert(SvGMAGICAL(sv));
SvMAGICAL_off(sv);
SvREADONLY_off(sv);
SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
MGVTBL* vtbl = mg->mg_virtual;
if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) {
(*vtbl->svt_get)(sv, mg);
if (mg->mg_flags & MGf_GSKIP)
savemagic = 0;
}
}
if (savemagic)
SvFLAGS(sv) |= savemagic;
else
mg_magical(sv);
if (SvGMAGICAL(sv))
SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
return 0;
}
int
mg_set(sv)
SV* sv;
{
MAGIC* mg;
MAGIC* nextmg;
U32 savemagic = SvMAGICAL(sv);
SvMAGICAL_off(sv);
for (mg = SvMAGIC(sv); mg; mg = nextmg) {
MGVTBL* vtbl = mg->mg_virtual;
nextmg = mg->mg_moremagic; /* it may delete itself */
if (mg->mg_flags & MGf_GSKIP) {
mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */
savemagic = 0;
}
if (vtbl && vtbl->svt_set)
(*vtbl->svt_set)(sv, mg);
}
if (SvMAGIC(sv)) {
if (savemagic)
SvFLAGS(sv) |= savemagic;
else
mg_magical(sv);
if (SvGMAGICAL(sv))
SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
}
return 0;
}
U32
mg_len(sv)
SV* sv;
{
MAGIC* mg;
char *s;
STRLEN len;
for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
MGVTBL* vtbl = mg->mg_virtual;
if (vtbl && vtbl->svt_len) {
U32 savemagic = SvMAGICAL(sv);
SvMAGICAL_off(sv);
SvFLAGS(sv) |= (SvFLAGS(sv)&(SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
/* omit MGf_GSKIP -- not changed here */
len = (*vtbl->svt_len)(sv, mg);
SvFLAGS(sv) |= savemagic;
if (SvGMAGICAL(sv))
SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
return len;
}
}
s = SvPV(sv, len);
return len;
}
int
mg_clear(sv)
SV* sv;
{
MAGIC* mg;
U32 savemagic = SvMAGICAL(sv);
SvMAGICAL_off(sv);
SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
MGVTBL* vtbl = mg->mg_virtual;
/* omit GSKIP -- never set here */
if (vtbl && vtbl->svt_clear)
(*vtbl->svt_clear)(sv, mg);
}
SvFLAGS(sv) |= savemagic;
if (SvGMAGICAL(sv))
SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
return 0;
}
MAGIC*
mg_find(sv, type)
SV* sv;
int type;
{
MAGIC* mg;
for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
if (mg->mg_type == type)
return mg;
}
return 0;
}
int
mg_copy(sv, nsv, key, klen)
SV* sv;
SV* nsv;
char *key;
STRLEN klen;
{
int count = 0;
MAGIC* mg;
for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
if (isUPPER(mg->mg_type)) {
sv_magic(nsv, mg->mg_obj, toLOWER(mg->mg_type), key, klen);
count++;
}
}
return count;
}
int
mg_free(sv)
SV* sv;
{
MAGIC* mg;
MAGIC* moremagic;
for (mg = SvMAGIC(sv); mg; mg = moremagic) {
MGVTBL* vtbl = mg->mg_virtual;
moremagic = 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);
}
SvMAGIC(sv) = 0;
return 0;
}
#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
#include <signal.h>
#endif
U32
magic_len(sv, mg)
SV *sv;
MAGIC *mg;
{
register I32 paren;
register char *s;
register I32 i;
switch (*mg->mg_ptr) {
case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9': case '&':
if (curpm) {
paren = atoi(mg->mg_ptr);
getparen:
if (curpm->op_pmregexp &&
paren <= curpm->op_pmregexp->nparens &&
(s = curpm->op_pmregexp->startp[paren]) ) {
i = curpm->op_pmregexp->endp[paren] - s;
if (i >= 0)
return i;
else
return 0;
}
else
return 0;
}
break;
case '+':
if (curpm) {
paren = curpm->op_pmregexp->lastparen;
if (!paren)
return 0;
goto getparen;
}
break;
case '`':
if (curpm) {
if (curpm->op_pmregexp &&
(s = curpm->op_pmregexp->subbeg) ) {
i = curpm->op_pmregexp->startp[0] - s;
if (i >= 0)
return i;
else
return 0;
}
else
return 0;
}
break;
case '\'':
if (curpm) {
if (curpm->op_pmregexp &&
(s = curpm->op_pmregexp->endp[0]) ) {
return (STRLEN) (curpm->op_pmregexp->subend - s);
}
else
return 0;
}
break;
case ',':
return (STRLEN)ofslen;
case '\\':
return (STRLEN)orslen;
}
magic_get(sv,mg);
if (!SvPOK(sv) && SvNIOK(sv))
sv_2pv(sv, &na);
if (SvPOK(sv))
return SvCUR(sv);
return 0;
}
int
magic_get(sv, mg)
SV *sv;
MAGIC *mg;
{
register I32 paren;
register char *s;
register I32 i;
switch (*mg->mg_ptr) {
case '\004': /* ^D */
sv_setiv(sv,(I32)(debug & 32767));
break;
case '\006': /* ^F */
sv_setiv(sv,(I32)maxsysfd);
break;
case '\010': /* ^H */
sv_setiv(sv,(I32)hints);
break;
case '\t': /* ^I */
if (inplace)
sv_setpv(sv, inplace);
else
sv_setsv(sv,&sv_undef);
break;
case '\020': /* ^P */
sv_setiv(sv,(I32)perldb);
break;
case '\024': /* ^T */
sv_setiv(sv,(I32)basetime);
break;
case '\027': /* ^W */
sv_setiv(sv,(I32)dowarn);
break;
case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9': case '&':
if (curpm) {
paren = atoi(GvENAME(mg->mg_obj));
getparen:
if (curpm->op_pmregexp &&
paren <= curpm->op_pmregexp->nparens &&
(s = curpm->op_pmregexp->startp[paren]) &&
curpm->op_pmregexp->endp[paren] ) {
i = curpm->op_pmregexp->endp[paren] - s;
if (i >= 0)
sv_setpvn(sv,s,i);
else
sv_setsv(sv,&sv_undef);
}
else
sv_setsv(sv,&sv_undef);
}
break;
case '+':
if (curpm) {
paren = curpm->op_pmregexp->lastparen;
if (paren)
goto getparen;
else
sv_setsv(sv,&sv_undef);
}
break;
case '`':
if (curpm) {
if (curpm->op_pmregexp &&
(s = curpm->op_pmregexp->subbeg) ) {
i = curpm->op_pmregexp->startp[0] - s;
if (i >= 0)
sv_setpvn(sv,s,i);
else
sv_setpvn(sv,"",0);
}
else
sv_setpvn(sv,"",0);
}
break;
case '\'':
if (curpm) {
if (curpm->op_pmregexp &&
(s = curpm->op_pmregexp->endp[0]) ) {
sv_setpvn(sv,s, curpm->op_pmregexp->subend - s);
}
else
sv_setpvn(sv,"",0);
}
break;
case '.':
#ifndef lint
if (GvIO(last_in_gv)) {
sv_setiv(sv,(I32)IoLINES(GvIO(last_in_gv)));
}
#endif
break;
case '?':
sv_setiv(sv,(I32)statusvalue);
break;
case '^':
s = IoTOP_NAME(GvIOp(defoutgv));
if (s)
sv_setpv(sv,s);
else {
sv_setpv(sv,GvENAME(defoutgv));
sv_catpv(sv,"_TOP");
}
break;
case '~':
s = IoFMT_NAME(GvIOp(defoutgv));
if (!s)
s = GvENAME(defoutgv);
sv_setpv(sv,s);
break;
#ifndef lint
case '=':
sv_setiv(sv,(I32)IoPAGE_LEN(GvIOp(defoutgv)));
break;
case '-':
sv_setiv(sv,(I32)IoLINES_LEFT(GvIOp(defoutgv)));
break;
case '%':
sv_setiv(sv,(I32)IoPAGE(GvIOp(defoutgv)));
break;
#endif
case ':':
break;
case '/':
break;
case '[':
sv_setiv(sv,(I32)curcop->cop_arybase);
break;
case '|':
sv_setiv(sv, (IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 );
break;
case ',':
sv_setpvn(sv,ofs,ofslen);
break;
case '\\':
sv_setpvn(sv,ors,orslen);
break;
case '#':
sv_setpv(sv,ofmt);
break;
case '!':
sv_setnv(sv,(double)errno);
sv_setpv(sv, errno ? Strerror(errno) : "");
SvNOK_on(sv); /* what a wonderful hack! */
break;
case '<':
sv_setiv(sv,(I32)uid);
break;
case '>':
sv_setiv(sv,(I32)euid);
break;
case '(':
s = buf;
(void)sprintf(s,"%d",(int)gid);
goto add_groups;
case ')':
s = buf;
(void)sprintf(s,"%d",(int)egid);
add_groups:
while (*s) s++;
#ifdef HAS_GETGROUPS
#ifndef NGROUPS
#define NGROUPS 32
#endif
{
Groups_t gary[NGROUPS];
i = getgroups(NGROUPS,gary);
while (--i >= 0) {
(void)sprintf(s," %ld", (long)gary[i]);
while (*s) s++;
}
}
#endif
sv_setpv(sv,buf);
break;
case '*':
break;
case '0':
break;
}
return 0;
}
int
magic_getuvar(sv, mg)
SV *sv;
MAGIC *mg;
{
struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
if (uf && uf->uf_val)
(*uf->uf_val)(uf->uf_index, sv);
return 0;
}
int
magic_setenv(sv,mg)
SV* sv;
MAGIC* mg;
{
register char *s;
STRLEN len;
I32 i;
s = SvPV(sv,len);
my_setenv(mg->mg_ptr,s);
#ifdef DYNAMIC_ENV_FETCH
/* We just undefd an environment var. Is a replacement */
/* waiting in the wings? */
if (!len) {
SV **envsvp;
if (envsvp = hv_fetch(GvHVn(envgv),mg->mg_ptr,mg->mg_len,FALSE))
s = SvPV(*envsvp,len);
}
#endif
/* And you'll never guess what the dog had */
/* in its mouth... */
if (tainting) {
if (s && strEQ(mg->mg_ptr,"PATH")) {
char *strend = s + len;
while (s < strend) {
s = cpytill(tokenbuf,s,strend,':',&i);
s++;
if (*tokenbuf != '/'
|| (Stat(tokenbuf,&statbuf) && (statbuf.st_mode & 2)) )
MgTAINTEDDIR_on(mg);
}
}
}
return 0;
}
int
magic_clearenv(sv,mg)
SV* sv;
MAGIC* mg;
{
my_setenv(mg->mg_ptr,Nullch);
return 0;
}
int
magic_setsig(sv,mg)
SV* sv;
MAGIC* mg;
{
register char *s;
I32 i;
i = whichsig(mg->mg_ptr); /* ...no, a brick */
if (!i && (dowarn || strEQ(mg->mg_ptr,"ALARM")))
warn("No such signal: SIG%s", mg->mg_ptr);
if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
(void)signal(i,sighandler);
return 0;
}
s = SvPV_force(sv,na);
if (strEQ(s,"IGNORE"))
#ifndef lint
(void)signal(i,SIG_IGN);
#else
;
#endif
else if (strEQ(s,"DEFAULT") || !*s)
(void)signal(i,SIG_DFL);
else {
(void)signal(i,sighandler);
if (!strchr(s,':') && !strchr(s,'\'')) {
sprintf(tokenbuf, "main::%s",s);
sv_setpv(sv,tokenbuf);
}
}
return 0;
}
int
magic_setisa(sv,mg)
SV* sv;
MAGIC* mg;
{
sub_generation++;
return 0;
}
#ifdef OVERLOAD
int
magic_setamagic(sv,mg)
SV* sv;
MAGIC* mg;
{
/* HV_badAMAGIC_on(Sv_STASH(sv)); */
amagic_generation++;
return 0;
}
#endif /* OVERLOAD */
static int
magic_methpack(sv,mg,meth)
SV* sv;
MAGIC* mg;
char *meth;
{
dSP;
ENTER;
SAVETMPS;
PUSHMARK(sp);
EXTEND(sp, 2);
PUSHs(mg->mg_obj);
if (mg->mg_ptr)
PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
else if (mg->mg_type == 'p')
PUSHs(sv_2mortal(newSViv(mg->mg_len)));
PUTBACK;
if (perl_call_method(meth, G_SCALAR))
sv_setsv(sv, *stack_sp--);
FREETMPS;
LEAVE;
return 0;
}
int
magic_getpack(sv,mg)
SV* sv;
MAGIC* mg;
{
magic_methpack(sv,mg,"FETCH");
if (mg->mg_ptr)
mg->mg_flags |= MGf_GSKIP;
return 0;
}
int
magic_setpack(sv,mg)
SV* sv;
MAGIC* mg;
{
dSP;
PUSHMARK(sp);
EXTEND(sp, 3);
PUSHs(mg->mg_obj);
if (mg->mg_ptr)
PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
else if (mg->mg_type == 'p')
PUSHs(sv_2mortal(newSViv(mg->mg_len)));
PUSHs(sv);
PUTBACK;
perl_call_method("STORE", G_SCALAR|G_DISCARD);
return 0;
}
int
magic_clearpack(sv,mg)
SV* sv;
MAGIC* mg;
{
return magic_methpack(sv,mg,"DELETE");
}
int magic_wipepack(sv,mg)
SV* sv;
MAGIC* mg;
{
dSP;
PUSHMARK(sp);
XPUSHs(mg->mg_obj);
PUTBACK;
perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
return 0;
}
int
magic_nextpack(sv,mg,key)
SV* sv;
MAGIC* mg;
SV* key;
{
dSP;
char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
ENTER;
SAVETMPS;
PUSHMARK(sp);
EXTEND(sp, 2);
PUSHs(mg->mg_obj);
if (SvOK(key))
PUSHs(key);
PUTBACK;
if (perl_call_method(meth, G_SCALAR))
sv_setsv(key, *stack_sp--);
FREETMPS;
LEAVE;
return 0;
}
int
magic_existspack(sv,mg)
SV* sv;
MAGIC* mg;
{
return magic_methpack(sv,mg,"EXISTS");
}
int
magic_setdbline(sv,mg)
SV* sv;
MAGIC* mg;
{
OP *o;
I32 i;
GV* gv;
SV** svp;
gv = DBline;
i = SvTRUE(sv);
svp = av_fetch(GvAV(gv),atoi(mg->mg_ptr), FALSE);
if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
o->op_private = i;
else
warn("Can't break at that line\n");
return 0;
}
int
magic_getarylen(sv,mg)
SV* sv;
MAGIC* mg;
{
sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase);
return 0;
}
int
magic_setarylen(sv,mg)
SV* sv;
MAGIC* mg;
{
av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase);
return 0;
}
int
magic_getpos(sv,mg)
SV* sv;
MAGIC* mg;
{
SV* lsv = LvTARG(sv);
if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
mg = mg_find(lsv, 'g');
if (mg && mg->mg_len >= 0) {
sv_setiv(sv, mg->mg_len + curcop->cop_arybase);
return 0;
}
}
(void)SvOK_off(sv);
return 0;
}
int
magic_setpos(sv,mg)
SV* sv;
MAGIC* mg;
{
SV* lsv = LvTARG(sv);
SSize_t pos;
STRLEN len;
mg = 0;
if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
mg = mg_find(lsv, 'g');
if (!mg) {
if (!SvOK(sv))
return 0;
sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
mg = mg_find(lsv, 'g');
}
else if (!SvOK(sv)) {
mg->mg_len = -1;
return 0;
}
len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
pos = SvIV(sv) - curcop->cop_arybase;
if (pos < 0) {
pos += len;
if (pos < 0)
pos = 0;
}
else if (pos > len)
pos = len;
mg->mg_len = pos;
return 0;
}
int
magic_getglob(sv,mg)
SV* sv;
MAGIC* mg;
{
gv_efullname(sv,((GV*)sv));/* a gv value, be nice */
return 0;
}
int
magic_setglob(sv,mg)
SV* sv;
MAGIC* mg;
{
register char *s;
GV* gv;
if (!SvOK(sv))
return 0;
s = SvPV(sv, na);
if (*s == '*' && s[1])
s++;
gv = gv_fetchpv(s,TRUE, SVt_PVGV);
if (sv == (SV*)gv)
return 0;
if (GvGP(sv))
gp_free(sv);
GvGP(sv) = gp_ref(GvGP(gv));
if (!GvAV(gv))
gv_AVadd(gv);
if (!GvHV(gv))
gv_HVadd(gv);
if (!GvIOp(gv))
GvIOp(gv) = newIO();
return 0;
}
int
magic_setsubstr(sv,mg)
SV* sv;
MAGIC* mg;
{
STRLEN len;
char *tmps = SvPV(sv,len);
sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
return 0;
}
int
magic_gettaint(sv,mg)
SV* sv;
MAGIC* mg;
{
tainted = TRUE;
return 0;
}
int
magic_settaint(sv,mg)
SV* sv;
MAGIC* mg;
{
if (!tainted) {
if (!SvMAGICAL(sv))
SvMAGICAL_on(sv);
sv_unmagic(sv, 't');
}
return 0;
}
int
magic_setvec(sv,mg)
SV* sv;
MAGIC* mg;
{
do_vecset(sv); /* XXX slurp this routine */
return 0;
}
int
magic_setmglob(sv,mg)
SV* sv;
MAGIC* mg;
{
mg->mg_len = -1;
return 0;
}
int
magic_setbm(sv,mg)
SV* sv;
MAGIC* mg;
{
sv_unmagic(sv, 'B');
SvVALID_off(sv);
return 0;
}
int
magic_setuvar(sv,mg)
SV* sv;
MAGIC* mg;
{
struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
if (uf && uf->uf_set)
(*uf->uf_set)(uf->uf_index, sv);
return 0;
}
int
magic_set(sv,mg)
SV* sv;
MAGIC* mg;
{
register char *s;
I32 i;
STRLEN len;
switch (*mg->mg_ptr) {
case '\004': /* ^D */
debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
DEBUG_x(dump_all());
break;
case '\006': /* ^F */
maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
break;
case '\010': /* ^H */
hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
break;
case '\t': /* ^I */
if (inplace)
Safefree(inplace);
if (SvOK(sv))
inplace = savepv(SvPV(sv,na));
else
inplace = Nullch;
break;
case '\020': /* ^P */
i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
if (i != perldb) {
if (perldb)
oldlastpm = curpm;
else
curpm = oldlastpm;
}
perldb = i;
break;
case '\024': /* ^T */
basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
break;
case '\027': /* ^W */
dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
break;
case '.':
if (localizing)
save_sptr((SV**)&last_in_gv);
else if (SvOK(sv))
IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv);
break;
case '^':
Safefree(IoTOP_NAME(GvIOp(defoutgv)));
IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
break;
case '~':
Safefree(IoFMT_NAME(GvIOp(defoutgv)));
IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na));
IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
break;
case '=':
IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
break;
case '-':
IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L)
IoLINES_LEFT(GvIOp(defoutgv)) = 0L;
break;
case '%':
IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
break;
case '|':
IoFLAGS(GvIOp(defoutgv)) &= ~IOf_FLUSH;
if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) != 0) {
IoFLAGS(GvIOp(defoutgv)) |= IOf_FLUSH;
}
break;
case '*':
i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
multiline = (i != 0);
break;
case '/':
if (SvOK(sv)) {
nrs = rs = SvPV_force(sv,rslen);
nrslen = rslen;
if (rspara = !rslen) {
nrs = rs = "\n\n";
nrslen = rslen = 2;
}
nrschar = rschar = rs[rslen - 1];