/* mg.c
*
- * Copyright (c) 1991-1999, Larry Wall
+ * Copyright (c) 1991-2000, 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.
#define PERL_IN_MG_C
#include "perl.h"
-/* XXX If this causes problems, set i_unistd=undef in the hint file. */
-#ifdef I_UNISTD
-# include <unistd.h>
-#endif
-
#if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS)
# ifndef NGROUPS
# define NGROUPS 32
{
MAGIC* mg;
I32 len;
-
+
for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
MGVTBL* vtbl = mg->mg_virtual;
if (vtbl && vtbl->svt_len) {
for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
if (isUPPER(mg->mg_type)) {
sv_magic(nsv,
- mg->mg_type == 'P' ? SvTIED_obj(sv, mg) : mg->mg_obj,
+ mg->mg_type == 'P' ? SvTIED_obj(sv, mg) :
+ (mg->mg_type == 'D' && mg->mg_obj) ? sv : mg->mg_obj,
toLOWER(mg->mg_type), key, klen);
count++;
}
Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg)
{
dTHR;
- register char *s;
- register I32 i;
register REGEXP *rx;
- char *t;
if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
if (mg->mg_obj) /* @+ */
else /* @- */
return rx->lastparen;
}
-
+
return (U32)-1;
}
return 0;
}
+int
+Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg)
+{
+ dTHR;
+ Perl_croak(aTHX_ PL_no_modify);
+ /* NOT REACHED */
+ return 0;
+}
+
U32
Perl_magic_len(pTHX_ SV *sv, MAGIC *mg)
{
dTHR;
register I32 paren;
- register char *s;
register I32 i;
register REGEXP *rx;
- char *t;
+ I32 s1, t1;
switch (*mg->mg_ptr) {
case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9': case '&':
if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
- I32 s1, t1;
paren = atoi(mg->mg_ptr);
getparen:
(t1 = rx->endp[paren]) != -1)
{
i = t1 - s1;
+ getlen:
+ if (i > 0 && (PL_curpm->op_pmdynflags & PMdf_UTF8) && !IN_BYTE) {
+ char *s = rx->subbeg + s1;
+ char *send = rx->subbeg + t1;
+ i = 0;
+ while (s < send) {
+ s += UTF8SKIP(s);
+ i++;
+ }
+ }
if (i >= 0)
return i;
}
if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
if (rx->startp[0] != -1) {
i = rx->startp[0];
- if (i >= 0)
- return i;
+ if (i > 0) {
+ s1 = 0;
+ t1 = i;
+ goto getlen;
+ }
}
}
return 0;
if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
if (rx->endp[0] != -1) {
i = rx->sublen - rx->endp[0];
- if (i >= 0)
- return i;
+ if (i > 0) {
+ s1 = rx->endp[0];
+ t1 = rx->sublen;
+ goto getlen;
+ }
}
}
return 0;
register char *s;
register I32 i;
register REGEXP *rx;
- char *t;
switch (*mg->mg_ptr) {
case '\001': /* ^A */
#ifdef MACOS_TRADITIONAL
{
char msg[256];
-
- sv_setnv(sv,(double)gLastMacOSErr);
- sv_setpv(sv, gLastMacOSErr ? GetSysErrText(gLastMacOSErr, msg) : "");
+
+ sv_setnv(sv,(double)gMacPerl_OSErr);
+ sv_setpv(sv, gMacPerl_OSErr ? GetSysErrText(gMacPerl_OSErr, msg) : "");
}
#else
#ifdef VMS
else
sv_setsv(sv, &PL_sv_undef);
break;
- case '\017': /* ^O */
- sv_setpv(sv, PL_osname);
+ case '\017': /* ^O & ^OPEN */
+ if (*(mg->mg_ptr+1) == '\0')
+ sv_setpv(sv, PL_osname);
+ else if (strEQ(mg->mg_ptr, "\017PEN")) {
+ if (!PL_compiling.cop_io)
+ sv_setsv(sv, &PL_sv_undef);
+ else {
+ sv_setsv(sv, PL_compiling.cop_io);
+ }
+ }
break;
case '\020': /* ^P */
sv_setiv(sv, (IV)PL_perldb);
{
dTHR;
if (PL_lex_state != LEX_NOTPARSING)
- SvOK_off(sv);
+ (void)SvOK_off(sv);
else if (PL_in_eval)
- sv_setiv(sv, 1);
- else
- sv_setiv(sv, 0);
+ sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE));
}
break;
case '\024': /* ^T */
sv_setiv(sv, (IV)PL_basetime);
#endif
break;
- case '\027': /* ^W & $^Warnings*/
+ case '\027': /* ^W & $^WARNING_BITS & ^WIDE_SYSTEM_CALLS */
if (*(mg->mg_ptr+1) == '\0')
sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE));
- else if (strEQ(mg->mg_ptr, "\027arnings")) {
- if (PL_compiling.cop_warnings == WARN_NONE ||
- PL_compiling.cop_warnings == WARN_STD)
+ else if (strEQ(mg->mg_ptr, "\027ARNING_BITS")) {
+ if (PL_compiling.cop_warnings == pWARN_NONE ||
+ PL_compiling.cop_warnings == pWARN_STD)
{
sv_setpvn(sv, WARN_NONEstring, WARNsize) ;
}
- else if (PL_compiling.cop_warnings == WARN_ALL) {
+ else if (PL_compiling.cop_warnings == pWARN_ALL) {
sv_setpvn(sv, WARN_ALLstring, WARNsize) ;
- }
+ }
else {
sv_setsv(sv, PL_compiling.cop_warnings);
- }
+ }
+ SvPOK_only(sv);
}
+ else if (strEQ(mg->mg_ptr, "\027IDE_SYSTEM_CALLS"))
+ sv_setiv(sv, (IV)PL_widesyscalls);
break;
case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9': case '&':
{
i = t1 - s1;
s = rx->subbeg + s1;
+ if (!rx->subbeg)
+ break;
+
getrx:
if (i >= 0) {
bool was_tainted;
Perl_sv_catpvf(aTHX_ sv, " %"Gid_t_f, gary[i]);
}
#endif
- SvIOK_on(sv); /* what a wonderful hack! */
+ (void)SvIOK_on(sv); /* what a wonderful hack! */
break;
case '*':
break;
STRLEN n_a;
magic_clear_all_env(sv,mg);
hv_iterinit((HV*)sv);
- while (entry = hv_iternext((HV*)sv)) {
+ while ((entry = hv_iternext((HV*)sv))) {
I32 keylen;
my_setenv(hv_iterkey(entry, &keylen),
SvPV(hv_iterval((HV*)sv, entry), n_a));
int
Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg)
{
-#if defined(VMS)
+#if defined(VMS) || defined(EPOC)
Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
#else
# ifdef PERL_IMPLICIT_SYS
cur += len+1;
}
FreeEnvironmentStrings(envv);
-# else
-# ifdef CYGWIN
- I32 i;
- for (i = 0; environ[i]; i++)
- safesysfree(environ[i]);
# else
# ifndef PERL_USE_SAFE_PUTENV
I32 i;
for (i = 0; environ[i]; i++)
safesysfree(environ[i]);
# endif /* PERL_USE_SAFE_PUTENV */
-# endif /* CYGWIN */
environ[0] = Nullch;
return 0;
}
+#ifndef PERL_MICRO
int
Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg)
{
else {
i = whichsig(s); /* ...no, a brick */
if (!i) {
- if (ckWARN(WARN_SIGNAL) || strEQ(s,"ALARM"))
+ if (ckWARN(WARN_SIGNAL))
Perl_warner(aTHX_ WARN_SIGNAL, "No such signal: SIG%s", s);
return 0;
}
}
return 0;
}
+#endif /* !PERL_MICRO */
int
Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg)
i = HvKEYS(hv);
else {
/*SUPPRESS 560*/
- while (entry = hv_iternext(hv)) {
+ while ((entry = hv_iternext(hv))) {
i++;
}
}
hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
}
return 0;
-}
+}
/* caller is responsible for stack switching/cleanup */
STATIC int
PUSHMARK(SP);
EXTEND(SP, n);
PUSHs(SvTIED_obj(sv, mg));
- if (n > 1) {
+ if (n > 1) {
if (mg->mg_ptr) {
if (mg->mg_len >= 0)
PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len)));
U32
Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg)
-{
+{
dSP;
U32 retval = 0;
Perl_magic_existspack(pTHX_ SV *sv, MAGIC *mg)
{
return magic_methpack(sv,mg,"EXISTS");
-}
+}
int
Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg)
atoi(MgPV(mg,n_a)), FALSE);
if (svp && SvIOKp(*svp) && (o = INT2PTR(OP*,SvIVX(*svp))))
o->op_private = i;
- else if (ckWARN_d(WARN_INTERNAL))
- Perl_warner(aTHX_ WARN_INTERNAL, "Can't break at that line\n");
return 0;
}
Perl_magic_getpos(pTHX_ 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) {
dTHR;
mg = 0;
-
+
if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
mg = mg_find(lsv, 'g');
if (!mg) {
if (rem + offs > len)
rem = len - offs;
sv_setpvn(sv, tmps + offs, (STRLEN)rem);
+ if (DO_UTF8(lsv))
+ SvUTF8_on(sv);
return 0;
}
{
dTHR;
TAINT_IF((mg->mg_len & 1) ||
- (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
+ ((mg->mg_len & 2) && mg->mg_obj == sv)); /* kludge */
return 0;
}
SV *lsv = LvTARG(sv);
if (!lsv) {
- SvOK_off(sv);
+ (void)SvOK_off(sv);
return 0;
}
Perl_croak(aTHX_ "panic: magic_killbackrefs");
/* XXX Should we check that it hasn't changed? */
SvRV(svp[i]) = 0;
- SvOK_off(svp[i]);
+ (void)SvOK_off(svp[i]);
SvWEAKREF_off(svp[i]);
svp[i] = &PL_sv_undef;
}
break;
case '\005': /* ^E */
#ifdef MACOS_TRADITIONAL
- gLastMacOSErr = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
+ gMacPerl_OSErr = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
#else
# ifdef VMS
set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
PL_inplace = Nullch;
break;
case '\017': /* ^O */
- if (PL_osname)
- Safefree(PL_osname);
- if (SvOK(sv))
- PL_osname = savepv(SvPV(sv,len));
- else
- PL_osname = Nullch;
+ if (*(mg->mg_ptr+1) == '\0') {
+ if (PL_osname)
+ Safefree(PL_osname);
+ if (SvOK(sv))
+ PL_osname = savepv(SvPV(sv,len));
+ else
+ PL_osname = Nullch;
+ }
+ else if (strEQ(mg->mg_ptr, "\017PEN")) {
+ if (!PL_compiling.cop_io)
+ PL_compiling.cop_io = newSVsv(sv);
+ else
+ sv_setsv(PL_compiling.cop_io,sv);
+ }
break;
case '\020': /* ^P */
PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
#endif
break;
- case '\027': /* ^W & $^Warnings */
+ case '\027': /* ^W & $^WARNING_BITS & ^WIDE_SYSTEM_CALLS */
if (*(mg->mg_ptr+1) == '\0') {
if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
- PL_dowarn = (PL_dowarn & ~G_WARN_ON)
+ PL_dowarn = (PL_dowarn & ~G_WARN_ON)
| (i ? G_WARN_ON : G_WARN_OFF) ;
}
}
- else if (strEQ(mg->mg_ptr, "\027arnings")) {
+ else if (strEQ(mg->mg_ptr, "\027ARNING_BITS")) {
if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
- if (memEQ(SvPVX(sv), WARN_ALLstring, WARNsize)) {
- PL_compiling.cop_warnings = WARN_ALL;
- PL_dowarn |= G_WARN_ONCE ;
- }
- else if (memEQ(SvPVX(sv), WARN_NONEstring, WARNsize))
- PL_compiling.cop_warnings = WARN_NONE;
- else {
- if (specialWARN(PL_compiling.cop_warnings))
- PL_compiling.cop_warnings = newSVsv(sv) ;
- else
- sv_setsv(PL_compiling.cop_warnings, sv);
- if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE))
+ if (!SvPOK(sv) && PL_localizing) {
+ sv_setpvn(sv, WARN_NONEstring, WARNsize);
+ PL_compiling.cop_warnings = pWARN_NONE;
+ break;
+ }
+ {
+ STRLEN len, i;
+ int accumulate = 0 ;
+ int any_fatals = 0 ;
+ char * ptr = (char*)SvPV(sv, len) ;
+ for (i = 0 ; i < len ; ++i) {
+ accumulate |= ptr[i] ;
+ any_fatals |= (ptr[i] & 0xAA) ;
+ }
+ if (!accumulate)
+ PL_compiling.cop_warnings = pWARN_NONE;
+ else if (isWARN_on(sv, WARN_ALL) && !any_fatals) {
+ PL_compiling.cop_warnings = pWARN_ALL;
PL_dowarn |= G_WARN_ONCE ;
- }
+ }
+ else {
+ if (specialWARN(PL_compiling.cop_warnings))
+ PL_compiling.cop_warnings = newSVsv(sv) ;
+ else
+ sv_setsv(PL_compiling.cop_warnings, sv);
+ if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE))
+ PL_dowarn |= G_WARN_ONCE ;
+ }
+
+ }
}
}
+ else if (strEQ(mg->mg_ptr, "\027IDE_SYSTEM_CALLS"))
+ PL_widesyscalls = SvTRUE(sv);
break;
case '.':
if (PL_localizing) {
break;
#ifndef MACOS_TRADITIONAL
case '0':
+#ifdef HAS_SETPROCTITLE
+ /* The BSDs don't show the argv[] in ps(1) output, they
+ * show a string from the process struct and provide
+ * the setproctitle() routine to manipulate that. */
+ {
+ s = SvPV(sv, len);
+# if __FreeBSD_version >= 410001
+ /* The leading "-" removes the "perl: " prefix,
+ * but not the "(perl) suffix from the ps(1)
+ * output, because that's what ps(1) shows if the
+ * argv[] is modified. */
+ setproctitle("-%s", s, len + 1);
+# else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */
+ /* This doesn't really work if you assume that
+ * $0 = 'foobar'; will wipe out 'perl' from the $0
+ * because in ps(1) output the result will be like
+ * sprintf("perl: %s (perl)", s)
+ * I guess this is a security feature:
+ * one (a user process) cannot get rid of the original name.
+ * --jhi */
+ setproctitle("%s", s);
+# endif
+ }
+#endif
if (!PL_origalen) {
s = PL_origargv[0];
s += strlen(s);
if (PL_origargv[i] == s + 1
#ifdef OS2
|| PL_origargv[i] == s + 2
-#endif
+#endif
)
{
++s;
if (PL_origenviron && (PL_origenviron[0] == s + 1
#ifdef OS2
|| (PL_origenviron[0] == s + 9 && (s += 8))
-#endif
+#endif
)) {
my_setenv("NoNe SuCh", Nullch);
/* force copy of environment */
Signal_t
Perl_sighandler(int sig)
{
+#if defined(WIN32) && defined(PERL_IMPLICIT_CONTEXT)
+ dTHXoa(PL_curinterp); /* fake TLS, because signals don't do TLS */
+#else
dTHX;
+#endif
dSP;
GV *gv = Nullgv;
HV *st;
CV *cv = Nullcv;
OP *myop = PL_op;
U32 flags = 0;
- I32 o_save_i = PL_savestack_ix, type;
+ I32 o_save_i = PL_savestack_ix;
XPV *tXpv = PL_Xpv;
-
+
+#if defined(WIN32) && defined(PERL_IMPLICIT_CONTEXT)
+ PERL_SET_THX(aTHXo); /* fake TLS, see above */
+#endif
+
if (PL_savestack_ix + 15 <= PL_savestack_max)
flags |= 1;
if (PL_markstack_ptr < PL_markstack_max - 2)
o_save_i = PL_savestack_ix;
SAVEDESTRUCTOR_X(unwind_handler_stack, (void*)&flags);
}
- if (flags & 4)
+ if (flags & 4)
PL_markstack_ptr++; /* Protect mark. */
if (flags & 8) {
PL_retstack_ix++;
if (flags & 16)
PL_scopestack_ix += 1;
/* sv_2cv is too complicated, try a simpler variant first: */
- if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig]))
+ if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig]))
|| SvTYPE(cv) != SVt_PVCV)
cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE);
cleanup:
if (flags & 1)
PL_savestack_ix -= 8; /* Unprotect save in progress. */
- if (flags & 4)
+ if (flags & 4)
PL_markstack_ptr--;
- if (flags & 8)
+ if (flags & 8)
PL_retstack_ix--;
if (flags & 16)
PL_scopestack_ix -= 1;
if (flags & 64)
SvREFCNT_dec(sv);
PL_op = myop; /* Apparently not needed... */
-
+
PL_Sv = tSv; /* Restore global temporaries. */
PL_Xpv = tXpv;
return;
restore_magic(pTHXo_ void *p)
{
dTHR;
- MGS* mgs = SSPTR((I32)p, MGS*);
+ MGS* mgs = SSPTR(PTR2IV(p), MGS*);
SV* sv = mgs->mgs_sv;
if (!sv)