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-rw-r--r--contrib/perl5/mg.c1984
1 files changed, 1984 insertions, 0 deletions
diff --git a/contrib/perl5/mg.c b/contrib/perl5/mg.c
new file mode 100644
index 0000000..9dfbd4f
--- /dev/null
+++ b/contrib/perl5/mg.c
@@ -0,0 +1,1984 @@
+/* mg.c
+ *
+ * Copyright (c) 1991-1997, Larry Wall
+ *
+ * You may distribute under the terms of either the GNU General Public
+ * License or the Artistic License, as specified in the README file.
+ *
+ */
+
+/*
+ * "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"
+
+/* 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
+# endif
+#endif
+
+/*
+ * Use the "DESTRUCTOR" scope cleanup to reinstate magic.
+ */
+
+#ifdef PERL_OBJECT
+
+#define VTBL this->*vtbl
+
+#else
+struct magic_state {
+ SV* mgs_sv;
+ U32 mgs_flags;
+};
+typedef struct magic_state MGS;
+
+static void restore_magic _((void *p));
+#define VTBL *vtbl
+
+#endif
+
+STATIC void
+save_magic(MGS *mgs, SV *sv)
+{
+ assert(SvMAGICAL(sv));
+
+ mgs->mgs_sv = sv;
+ mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
+ SAVEDESTRUCTOR(restore_magic, mgs);
+
+ SvMAGICAL_off(sv);
+ SvREADONLY_off(sv);
+ SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
+}
+
+STATIC void
+restore_magic(void *p)
+{
+ MGS* mgs = (MGS*)p;
+ SV* sv = mgs->mgs_sv;
+
+ if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
+ {
+ if (mgs->mgs_flags)
+ SvFLAGS(sv) |= mgs->mgs_flags;
+ else
+ mg_magical(sv);
+ if (SvGMAGICAL(sv))
+ SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
+ }
+}
+
+void
+mg_magical(SV *sv)
+{
+ MAGIC* mg;
+ for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
+ MGVTBL* vtbl = mg->mg_virtual;
+ if (vtbl) {
+ if ((vtbl->svt_get != NULL) && !(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 != NULL))
+ SvRMAGICAL_on(sv);
+ }
+ }
+}
+
+int
+mg_get(SV *sv)
+{
+ MGS mgs;
+ MAGIC* mg;
+ MAGIC** mgp;
+ int mgp_valid = 0;
+
+ ENTER;
+ save_magic(&mgs, sv);
+
+ mgp = &SvMAGIC(sv);
+ while ((mg = *mgp) != 0) {
+ MGVTBL* vtbl = mg->mg_virtual;
+ if (!(mg->mg_flags & MGf_GSKIP) && vtbl && (vtbl->svt_get != NULL)) {
+ (VTBL->svt_get)(sv, mg);
+ /* Ignore this magic if it's been deleted */
+ if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) &&
+ (mg->mg_flags & MGf_GSKIP))
+ mgs.mgs_flags = 0;
+ }
+ /* Advance to next magic (complicated by possible deletion) */
+ if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) {
+ mgp = &mg->mg_moremagic;
+ mgp_valid = 1;
+ }
+ else
+ mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */
+ }
+
+ LEAVE;
+ return 0;
+}
+
+int
+mg_set(SV *sv)
+{
+ MGS mgs;
+ MAGIC* mg;
+ MAGIC* nextmg;
+
+ ENTER;
+ save_magic(&mgs, 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 */
+ mgs.mgs_flags = 0;
+ }
+ if (vtbl && (vtbl->svt_set != NULL))
+ (VTBL->svt_set)(sv, mg);
+ }
+
+ LEAVE;
+ return 0;
+}
+
+U32
+mg_length(SV *sv)
+{
+ MAGIC* mg;
+ char *junk;
+ STRLEN len;
+
+ for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
+ MGVTBL* vtbl = mg->mg_virtual;
+ if (vtbl && (vtbl->svt_len != NULL)) {
+ MGS mgs;
+
+ ENTER;
+ save_magic(&mgs, sv);
+ /* omit MGf_GSKIP -- not changed here */
+ len = (VTBL->svt_len)(sv, mg);
+ LEAVE;
+ return len;
+ }
+ }
+
+ junk = SvPV(sv, len);
+ return len;
+}
+
+I32
+mg_size(SV *sv)
+{
+ MAGIC* mg;
+ I32 len;
+
+ for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
+ MGVTBL* vtbl = mg->mg_virtual;
+ if (vtbl && (vtbl->svt_len != NULL)) {
+ MGS mgs;
+ ENTER;
+ /* omit MGf_GSKIP -- not changed here */
+ len = (VTBL->svt_len)(sv, mg);
+ LEAVE;
+ return len;
+ }
+ }
+
+ switch(SvTYPE(sv)) {
+ case SVt_PVAV:
+ len = AvFILLp((AV *) sv); /* Fallback to non-tied array */
+ return len;
+ case SVt_PVHV:
+ /* FIXME */
+ default:
+ croak("Size magic not implemented");
+ break;
+ }
+ return 0;
+}
+
+int
+mg_clear(SV *sv)
+{
+ MGS mgs;
+ MAGIC* mg;
+
+ ENTER;
+ save_magic(&mgs, sv);
+
+ for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
+ MGVTBL* vtbl = mg->mg_virtual;
+ /* omit GSKIP -- never set here */
+
+ if (vtbl && (vtbl->svt_clear != NULL))
+ (VTBL->svt_clear)(sv, mg);
+ }
+
+ LEAVE;
+ return 0;
+}
+
+MAGIC*
+mg_find(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 *sv, SV *nsv, char *key, I32 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)
+{
+ 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 != NULL))
+ (VTBL->svt_free)(sv, mg);
+ if (mg->mg_ptr && mg->mg_type != 'g')
+ if (mg->mg_len >= 0)
+ Safefree(mg->mg_ptr);
+ else if (mg->mg_len == HEf_SVKEY)
+ SvREFCNT_dec((SV*)mg->mg_ptr);
+ if (mg->mg_flags & MGf_REFCOUNTED)
+ SvREFCNT_dec(mg->mg_obj);
+ Safefree(mg);
+ }
+ SvMAGIC(sv) = 0;
+ return 0;
+}
+
+#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
+#include <signal.h>
+#endif
+
+U32
+magic_len(SV *sv, MAGIC *mg)
+{
+ dTHR;
+ register I32 paren;
+ register char *s;
+ register I32 i;
+ register REGEXP *rx;
+ char *t;
+
+ 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)) {
+ paren = atoi(mg->mg_ptr);
+ getparen:
+ if (paren <= rx->nparens &&
+ (s = rx->startp[paren]) &&
+ (t = rx->endp[paren]))
+ {
+ i = t - s;
+ if (i >= 0)
+ return i;
+ }
+ }
+ return 0;
+ case '+':
+ if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
+ paren = rx->lastparen;
+ if (paren)
+ goto getparen;
+ }
+ return 0;
+ case '`':
+ if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
+ if ((s = rx->subbeg) && rx->startp[0]) {
+ i = rx->startp[0] - s;
+ if (i >= 0)
+ return i;
+ }
+ }
+ return 0;
+ case '\'':
+ if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
+ if (rx->subend && (s = rx->endp[0])) {
+ i = rx->subend - s;
+ if (i >= 0)
+ return i;
+ }
+ }
+ return 0;
+ case ',':
+ return (STRLEN)PL_ofslen;
+ case '\\':
+ return (STRLEN)PL_orslen;
+ }
+ magic_get(sv,mg);
+ if (!SvPOK(sv) && SvNIOK(sv))
+ sv_2pv(sv, &PL_na);
+ if (SvPOK(sv))
+ return SvCUR(sv);
+ return 0;
+}
+
+int
+magic_get(SV *sv, MAGIC *mg)
+{
+ dTHR;
+ register I32 paren;
+ register char *s;
+ register I32 i;
+ register REGEXP *rx;
+ char *t;
+
+ switch (*mg->mg_ptr) {
+ case '\001': /* ^A */
+ sv_setsv(sv, PL_bodytarget);
+ break;
+ case '\004': /* ^D */
+ sv_setiv(sv, (IV)(PL_debug & 32767));
+ break;
+ case '\005': /* ^E */
+#ifdef VMS
+ {
+# include <descrip.h>
+# include <starlet.h>
+ char msg[255];
+ $DESCRIPTOR(msgdsc,msg);
+ sv_setnv(sv,(double) vaxc$errno);
+ if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
+ sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
+ else
+ sv_setpv(sv,"");
+ }
+#else
+#ifdef OS2
+ if (!(_emx_env & 0x200)) { /* Under DOS */
+ sv_setnv(sv, (double)errno);
+ sv_setpv(sv, errno ? Strerror(errno) : "");
+ } else {
+ if (errno != errno_isOS2)
+ Perl_rc = _syserrno();
+ sv_setnv(sv, (double)Perl_rc);
+ sv_setpv(sv, os2error(Perl_rc));
+ }
+#else
+#ifdef WIN32
+ {
+ DWORD dwErr = GetLastError();
+ sv_setnv(sv, (double)dwErr);
+ if (dwErr)
+ {
+#ifdef PERL_OBJECT
+ char *sMsg;
+ DWORD dwLen;
+ PerlProc_GetSysMsg(sMsg, dwLen, dwErr);
+ sv_setpvn(sv, sMsg, dwLen);
+ PerlProc_FreeBuf(sMsg);
+#else
+ win32_str_os_error(sv, dwErr);
+#endif
+ }
+ else
+ sv_setpv(sv, "");
+ SetLastError(dwErr);
+ }
+#else
+ sv_setnv(sv, (double)errno);
+ sv_setpv(sv, errno ? Strerror(errno) : "");
+#endif
+#endif
+#endif
+ SvNOK_on(sv); /* what a wonderful hack! */
+ break;
+ case '\006': /* ^F */
+ sv_setiv(sv, (IV)PL_maxsysfd);
+ break;
+ case '\010': /* ^H */
+ sv_setiv(sv, (IV)PL_hints);
+ break;
+ case '\011': /* ^I */ /* NOT \t in EBCDIC */
+ if (PL_inplace)
+ sv_setpv(sv, PL_inplace);
+ else
+ sv_setsv(sv, &PL_sv_undef);
+ break;
+ case '\017': /* ^O */
+ sv_setpv(sv, PL_osname);
+ break;
+ case '\020': /* ^P */
+ sv_setiv(sv, (IV)PL_perldb);
+ break;
+ case '\023': /* ^S */
+ {
+ dTHR;
+ if (PL_lex_state != LEX_NOTPARSING)
+ SvOK_off(sv);
+ else if (PL_in_eval)
+ sv_setiv(sv, 1);
+ else
+ sv_setiv(sv, 0);
+ }
+ break;
+ case '\024': /* ^T */
+#ifdef BIG_TIME
+ sv_setnv(sv, PL_basetime);
+#else
+ sv_setiv(sv, (IV)PL_basetime);
+#endif
+ break;
+ case '\027': /* ^W */
+ sv_setiv(sv, (IV)PL_dowarn);
+ break;
+ 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)) {
+ /*
+ * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj));
+ * XXX Does the new way break anything?
+ */
+ paren = atoi(mg->mg_ptr);
+ getparen:
+ if (paren <= rx->nparens &&
+ (s = rx->startp[paren]) &&
+ (t = rx->endp[paren]))
+ {
+ i = t - s;
+ getrx:
+ if (i >= 0) {
+ bool was_tainted;
+ if (PL_tainting) {
+ was_tainted = PL_tainted;
+ PL_tainted = FALSE;
+ }
+ sv_setpvn(sv,s,i);
+ if (PL_tainting)
+ PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx));
+ break;
+ }
+ }
+ }
+ sv_setsv(sv,&PL_sv_undef);
+ break;
+ case '+':
+ if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
+ paren = rx->lastparen;
+ if (paren)
+ goto getparen;
+ }
+ sv_setsv(sv,&PL_sv_undef);
+ break;
+ case '`':
+ if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
+ if ((s = rx->subbeg) && rx->startp[0]) {
+ i = rx->startp[0] - s;
+ goto getrx;
+ }
+ }
+ sv_setsv(sv,&PL_sv_undef);
+ break;
+ case '\'':
+ if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
+ if (rx->subend && (s = rx->endp[0])) {
+ i = rx->subend - s;
+ goto getrx;
+ }
+ }
+ sv_setsv(sv,&PL_sv_undef);
+ break;
+ case '.':
+#ifndef lint
+ if (GvIO(PL_last_in_gv)) {
+ sv_setiv(sv, (IV)IoLINES(GvIO(PL_last_in_gv)));
+ }
+#endif
+ break;
+ case '?':
+ {
+ sv_setiv(sv, (IV)STATUS_CURRENT);
+#ifdef COMPLEX_STATUS
+ LvTARGOFF(sv) = PL_statusvalue;
+ LvTARGLEN(sv) = PL_statusvalue_vms;
+#endif
+ }
+ break;
+ case '^':
+ s = IoTOP_NAME(GvIOp(PL_defoutgv));
+ if (s)
+ sv_setpv(sv,s);
+ else {
+ sv_setpv(sv,GvENAME(PL_defoutgv));
+ sv_catpv(sv,"_TOP");
+ }
+ break;
+ case '~':
+ s = IoFMT_NAME(GvIOp(PL_defoutgv));
+ if (!s)
+ s = GvENAME(PL_defoutgv);
+ sv_setpv(sv,s);
+ break;
+#ifndef lint
+ case '=':
+ sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv)));
+ break;
+ case '-':
+ sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv)));
+ break;
+ case '%':
+ sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv)));
+ break;
+#endif
+ case ':':
+ break;
+ case '/':
+ break;
+ case '[':
+ WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase));
+ break;
+ case '|':
+ sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 );
+ break;
+ case ',':
+ sv_setpvn(sv,PL_ofs,PL_ofslen);
+ break;
+ case '\\':
+ sv_setpvn(sv,PL_ors,PL_orslen);
+ break;
+ case '#':
+ sv_setpv(sv,PL_ofmt);
+ break;
+ case '!':
+#ifdef VMS
+ sv_setnv(sv, (double)((errno == EVMSERR) ? vaxc$errno : errno));
+ sv_setpv(sv, errno ? Strerror(errno) : "");
+#else
+ {
+ int saveerrno = errno;
+ sv_setnv(sv, (double)errno);
+#ifdef OS2
+ if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
+ else
+#endif
+ sv_setpv(sv, errno ? Strerror(errno) : "");
+ errno = saveerrno;
+ }
+#endif
+ SvNOK_on(sv); /* what a wonderful hack! */
+ break;
+ case '<':
+ sv_setiv(sv, (IV)PL_uid);
+ break;
+ case '>':
+ sv_setiv(sv, (IV)PL_euid);
+ break;
+ case '(':
+ sv_setiv(sv, (IV)PL_gid);
+ sv_setpvf(sv, "%Vd", (IV)PL_gid);
+ goto add_groups;
+ case ')':
+ sv_setiv(sv, (IV)PL_egid);
+ sv_setpvf(sv, "%Vd", (IV)PL_egid);
+ add_groups:
+#ifdef HAS_GETGROUPS
+ {
+ Groups_t gary[NGROUPS];
+ i = getgroups(NGROUPS,gary);
+ while (--i >= 0)
+ sv_catpvf(sv, " %Vd", (IV)gary[i]);
+ }
+#endif
+ SvIOK_on(sv); /* what a wonderful hack! */
+ break;
+ case '*':
+ break;
+ case '0':
+ break;
+#ifdef USE_THREADS
+ case '@':
+ sv_setsv(sv, thr->errsv);
+ break;
+#endif /* USE_THREADS */
+ }
+ return 0;
+}
+
+int
+magic_getuvar(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 *sv, MAGIC *mg)
+{
+ register char *s;
+ char *ptr;
+ STRLEN len, klen;
+ I32 i;
+
+ s = SvPV(sv,len);
+ ptr = MgPV(mg,klen);
+ my_setenv(ptr, s);
+
+#ifdef DYNAMIC_ENV_FETCH
+ /* We just undefd an environment var. Is a replacement */
+ /* waiting in the wings? */
+ if (!len) {
+ SV **valp;
+ if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE)))
+ s = SvPV(*valp, len);
+ }
+#endif
+
+#if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS)
+ /* And you'll never guess what the dog had */
+ /* in its mouth... */
+ if (PL_tainting) {
+ MgTAINTEDDIR_off(mg);
+#ifdef VMS
+ if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
+ char pathbuf[256], eltbuf[256], *cp, *elt = s;
+ struct stat sbuf;
+ int i = 0, j = 0;
+
+ do { /* DCL$PATH may be a search list */
+ while (1) { /* as may dev portion of any element */
+ if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) {
+ if ( *(cp+1) == '.' || *(cp+1) == '-' ||
+ cando_by_name(S_IWUSR,0,elt) ) {
+ MgTAINTEDDIR_on(mg);
+ return 0;
+ }
+ }
+ if ((cp = strchr(elt, ':')) != Nullch)
+ *cp = '\0';
+ if (my_trnlnm(elt, eltbuf, j++))
+ elt = eltbuf;
+ else
+ break;
+ }
+ j = 0;
+ } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf));
+ }
+#endif /* VMS */
+ if (s && klen == 4 && strEQ(ptr,"PATH")) {
+ char *strend = s + len;
+
+ while (s < strend) {
+ char tmpbuf[256];
+ struct stat st;
+ s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf,
+ s, strend, ':', &i);
+ s++;
+ if (i >= sizeof tmpbuf /* too long -- assume the worst */
+ || *tmpbuf != '/'
+ || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) {
+ MgTAINTEDDIR_on(mg);
+ return 0;
+ }
+ }
+ }
+ }
+#endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */
+
+ return 0;
+}
+
+int
+magic_clearenv(SV *sv, MAGIC *mg)
+{
+ my_setenv(MgPV(mg,PL_na),Nullch);
+ return 0;
+}
+
+int
+magic_set_all_env(SV *sv, MAGIC *mg)
+{
+#if defined(VMS)
+ die("Can't make list assignment to %%ENV on this system");
+#else
+ dTHR;
+ if (PL_localizing) {
+ HE* entry;
+ magic_clear_all_env(sv,mg);
+ hv_iterinit((HV*)sv);
+ while (entry = hv_iternext((HV*)sv)) {
+ I32 keylen;
+ my_setenv(hv_iterkey(entry, &keylen),
+ SvPV(hv_iterval((HV*)sv, entry), PL_na));
+ }
+ }
+#endif
+ return 0;
+}
+
+int
+magic_clear_all_env(SV *sv, MAGIC *mg)
+{
+#if defined(VMS)
+ die("Can't make list assignment to %%ENV on this system");
+#else
+#ifdef WIN32
+ char *envv = GetEnvironmentStrings();
+ char *cur = envv;
+ STRLEN len;
+ while (*cur) {
+ char *end = strchr(cur,'=');
+ if (end && end != cur) {
+ *end = '\0';
+ my_setenv(cur,Nullch);
+ *end = '=';
+ cur += strlen(end+1)+1;
+ }
+ else if ((len = strlen(cur)))
+ cur += len+1;
+ }
+ FreeEnvironmentStrings(envv);
+#else
+ I32 i;
+
+ if (environ == PL_origenviron)
+ New(901, environ, 1, char*);
+ else
+ for (i = 0; environ[i]; i++)
+ Safefree(environ[i]);
+ environ[0] = Nullch;
+
+#endif
+#endif
+ return 0;
+}
+
+int
+magic_getsig(SV *sv, MAGIC *mg)
+{
+ I32 i;
+ /* Are we fetching a signal entry? */
+ i = whichsig(MgPV(mg,PL_na));
+ if (i) {
+ if(psig_ptr[i])
+ sv_setsv(sv,psig_ptr[i]);
+ else {
+ Sighandler_t sigstate = rsignal_state(i);
+
+ /* cache state so we don't fetch it again */
+ if(sigstate == SIG_IGN)
+ sv_setpv(sv,"IGNORE");
+ else
+ sv_setsv(sv,&PL_sv_undef);
+ psig_ptr[i] = SvREFCNT_inc(sv);
+ SvTEMP_off(sv);
+ }
+ }
+ return 0;
+}
+int
+magic_clearsig(SV *sv, MAGIC *mg)
+{
+ I32 i;
+ /* Are we clearing a signal entry? */
+ i = whichsig(MgPV(mg,PL_na));
+ if (i) {
+ if(psig_ptr[i]) {
+ SvREFCNT_dec(psig_ptr[i]);
+ psig_ptr[i]=0;
+ }
+ if(psig_name[i]) {
+ SvREFCNT_dec(psig_name[i]);
+ psig_name[i]=0;
+ }
+ }
+ return 0;
+}
+
+int
+magic_setsig(SV *sv, MAGIC *mg)
+{
+ dTHR;
+ register char *s;
+ I32 i;
+ SV** svp;
+
+ s = MgPV(mg,PL_na);
+ if (*s == '_') {
+ if (strEQ(s,"__DIE__"))
+ svp = &PL_diehook;
+ else if (strEQ(s,"__WARN__"))
+ svp = &PL_warnhook;
+ else if (strEQ(s,"__PARSE__"))
+ svp = &PL_parsehook;
+ else
+ croak("No such hook: %s", s);
+ i = 0;
+ if (*svp) {
+ SvREFCNT_dec(*svp);
+ *svp = 0;
+ }
+ }
+ else {
+ i = whichsig(s); /* ...no, a brick */
+ if (!i) {
+ if (PL_dowarn || strEQ(s,"ALARM"))
+ warn("No such signal: SIG%s", s);
+ return 0;
+ }
+ SvREFCNT_dec(psig_name[i]);
+ SvREFCNT_dec(psig_ptr[i]);
+ psig_ptr[i] = SvREFCNT_inc(sv);
+ SvTEMP_off(sv); /* Make sure it doesn't go away on us */
+ psig_name[i] = newSVpv(s, strlen(s));
+ SvREADONLY_on(psig_name[i]);
+ }
+ if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
+ if (i)
+ (void)rsignal(i, PL_sighandlerp);
+ else
+ *svp = SvREFCNT_inc(sv);
+ return 0;
+ }
+ s = SvPV_force(sv,PL_na);
+ if (strEQ(s,"IGNORE")) {
+ if (i)
+ (void)rsignal(i, SIG_IGN);
+ else
+ *svp = 0;
+ }
+ else if (strEQ(s,"DEFAULT") || !*s) {
+ if (i)
+ (void)rsignal(i, SIG_DFL);
+ else
+ *svp = 0;
+ }
+ else {
+ /*
+ * We should warn if HINT_STRICT_REFS, but without
+ * access to a known hint bit in a known OP, we can't
+ * tell whether HINT_STRICT_REFS is in force or not.
+ */
+ if (!strchr(s,':') && !strchr(s,'\''))
+ sv_setpv(sv, form("main::%s", s));
+ if (i)
+ (void)rsignal(i, PL_sighandlerp);
+ else
+ *svp = SvREFCNT_inc(sv);
+ }
+ return 0;
+}
+
+int
+magic_setisa(SV *sv, MAGIC *mg)
+{
+ PL_sub_generation++;
+ return 0;
+}
+
+#ifdef OVERLOAD
+
+int
+magic_setamagic(SV *sv, MAGIC *mg)
+{
+ /* HV_badAMAGIC_on(Sv_STASH(sv)); */
+ PL_amagic_generation++;
+
+ return 0;
+}
+#endif /* OVERLOAD */
+
+int
+magic_getnkeys(SV *sv, MAGIC *mg)
+{
+ HV *hv = (HV*)LvTARG(sv);
+ HE *entry;
+ I32 i = 0;
+
+ if (hv) {
+ (void) hv_iterinit(hv);
+ if (!SvRMAGICAL(hv) || !mg_find((SV*)hv,'P'))
+ i = HvKEYS(hv);
+ else {
+ /*SUPPRESS 560*/
+ while (entry = hv_iternext(hv)) {
+ i++;
+ }
+ }
+ }
+
+ sv_setiv(sv, (IV)i);
+ return 0;
+}
+
+int
+magic_setnkeys(SV *sv, MAGIC *mg)
+{
+ if (LvTARG(sv)) {
+ hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
+ }
+ return 0;
+}
+
+/* caller is responsible for stack switching/cleanup */
+STATIC int
+magic_methcall(MAGIC *mg, char *meth, I32 flags, int n, SV *val)
+{
+ dSP;
+
+ PUSHMARK(SP);
+ EXTEND(SP, n);
+ PUSHs(mg->mg_obj);
+ if (n > 1) {
+ if (mg->mg_ptr) {
+ if (mg->mg_len >= 0)
+ PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
+ else if (mg->mg_len == HEf_SVKEY)
+ PUSHs((SV*)mg->mg_ptr);
+ }
+ else if (mg->mg_type == 'p') {
+ PUSHs(sv_2mortal(newSViv(mg->mg_len)));
+ }
+ }
+ if (n > 2) {
+ PUSHs(val);
+ }
+ PUTBACK;
+
+ return perl_call_method(meth, flags);
+}
+
+STATIC int
+magic_methpack(SV *sv, MAGIC *mg, char *meth)
+{
+ dSP;
+
+ ENTER;
+ SAVETMPS;
+ PUSHSTACKi(PERLSI_MAGIC);
+
+ if (magic_methcall(mg, meth, G_SCALAR, 2, NULL)) {
+ sv_setsv(sv, *PL_stack_sp--);
+ }
+
+ POPSTACK;
+ FREETMPS;
+ LEAVE;
+ return 0;
+}
+
+int
+magic_getpack(SV *sv, MAGIC *mg)
+{
+ magic_methpack(sv,mg,"FETCH");
+ if (mg->mg_ptr)
+ mg->mg_flags |= MGf_GSKIP;
+ return 0;
+}
+
+int
+magic_setpack(SV *sv, MAGIC *mg)
+{
+ dSP;
+ ENTER;
+ PUSHSTACKi(PERLSI_MAGIC);
+ magic_methcall(mg, "STORE", G_SCALAR|G_DISCARD, 3, sv);
+ POPSTACK;
+ LEAVE;
+ return 0;
+}
+
+int
+magic_clearpack(SV *sv, MAGIC *mg)
+{
+ return magic_methpack(sv,mg,"DELETE");
+}
+
+
+U32
+magic_sizepack(SV *sv, MAGIC *mg)
+{
+ dSP;
+ U32 retval = 0;
+
+ ENTER;
+ SAVETMPS;
+ PUSHSTACKi(PERLSI_MAGIC);
+ if (magic_methcall(mg, "FETCHSIZE", G_SCALAR, 2, NULL)) {
+ sv = *PL_stack_sp--;
+ retval = (U32) SvIV(sv)-1;
+ }
+ POPSTACK;
+ FREETMPS;
+ LEAVE;
+ return retval;
+}
+
+int magic_wipepack(SV *sv, MAGIC *mg)
+{
+ dSP;
+
+ ENTER;
+ PUSHSTACKi(PERLSI_MAGIC);
+ PUSHMARK(SP);
+ XPUSHs(mg->mg_obj);
+ PUTBACK;
+ perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
+ POPSTACK;
+ LEAVE;
+ return 0;
+}
+
+int
+magic_nextpack(SV *sv, MAGIC *mg, SV *key)
+{
+ dSP;
+ char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
+
+ ENTER;
+ SAVETMPS;
+ PUSHSTACKi(PERLSI_MAGIC);
+ 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, *PL_stack_sp--);
+
+ POPSTACK;
+ FREETMPS;
+ LEAVE;
+ return 0;
+}
+
+int
+magic_existspack(SV *sv, MAGIC *mg)
+{
+ return magic_methpack(sv,mg,"EXISTS");
+}
+
+int
+magic_setdbline(SV *sv, MAGIC *mg)
+{
+ dTHR;
+ OP *o;
+ I32 i;
+ GV* gv;
+ SV** svp;
+
+ gv = PL_DBline;
+ i = SvTRUE(sv);
+ svp = av_fetch(GvAV(gv),
+ atoi(MgPV(mg,PL_na)), 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 *sv, MAGIC *mg)
+{
+ dTHR;
+ sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase);
+ return 0;
+}
+
+int
+magic_setarylen(SV *sv, MAGIC *mg)
+{
+ dTHR;
+ av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase);
+ return 0;
+}
+
+int
+magic_getpos(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;
+ sv_setiv(sv, mg->mg_len + PL_curcop->cop_arybase);
+ return 0;
+ }
+ }
+ (void)SvOK_off(sv);
+ return 0;
+}
+
+int
+magic_setpos(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);
+
+ WITH_THR(pos = SvIV(sv) - PL_curcop->cop_arybase);
+ if (pos < 0) {
+ pos += len;
+ if (pos < 0)
+ pos = 0;
+ }
+ else if (pos > len)
+ pos = len;
+ mg->mg_len = pos;
+ mg->mg_flags &= ~MGf_MINMATCH;
+
+ return 0;
+}
+
+int
+magic_getglob(SV *sv, MAGIC *mg)
+{
+ if (SvFAKE(sv)) { /* FAKE globs can get coerced */
+ SvFAKE_off(sv);
+ gv_efullname3(sv,((GV*)sv), "*");
+ SvFAKE_on(sv);
+ }
+ else
+ gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
+ return 0;
+}
+
+int
+magic_setglob(SV *sv, MAGIC *mg)
+{
+ register char *s;
+ GV* gv;
+
+ if (!SvOK(sv))
+ return 0;
+ s = SvPV(sv, PL_na);
+ if (*s == '*' && s[1])
+ s++;
+ gv = gv_fetchpv(s,TRUE, SVt_PVGV);
+ if (sv == (SV*)gv)
+ return 0;
+ if (GvGP(sv))
+ gp_free((GV*)sv);
+ GvGP(sv) = gp_ref(GvGP(gv));
+ return 0;
+}
+
+int
+magic_getsubstr(SV *sv, MAGIC *mg)
+{
+ STRLEN len;
+ SV *lsv = LvTARG(sv);
+ char *tmps = SvPV(lsv,len);
+ I32 offs = LvTARGOFF(sv);
+ I32 rem = LvTARGLEN(sv);
+
+ if (offs > len)
+ offs = len;
+ if (rem + offs > len)
+ rem = len - offs;
+ sv_setpvn(sv, tmps + offs, (STRLEN)rem);
+ return 0;
+}
+
+int
+magic_setsubstr(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 *sv, MAGIC *mg)
+{
+ dTHR;
+ TAINT_IF((mg->mg_len & 1) ||
+ (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
+ return 0;
+}
+
+int
+magic_settaint(SV *sv, MAGIC *mg)
+{
+ dTHR;
+ if (PL_localizing) {
+ if (PL_localizing == 1)
+ mg->mg_len <<= 1;
+ else
+ mg->mg_len >>= 1;
+ }
+ else if (PL_tainted)
+ mg->mg_len |= 1;
+ else
+ mg->mg_len &= ~1;
+ return 0;
+}
+
+int
+magic_getvec(SV *sv, MAGIC *mg)
+{
+ SV *lsv = LvTARG(sv);
+ unsigned char *s;
+ unsigned long retnum;
+ STRLEN lsvlen;
+ I32 len;
+ I32 offset;
+ I32 size;
+
+ if (!lsv) {
+ SvOK_off(sv);
+ return 0;
+ }
+ s = (unsigned char *) SvPV(lsv, lsvlen);
+ offset = LvTARGOFF(sv);
+ size = LvTARGLEN(sv);
+ len = (offset + size + 7) / 8;
+
+ /* Copied from pp_vec() */
+
+ if (len > lsvlen) {
+ if (size <= 8)
+ retnum = 0;
+ else {
+ offset >>= 3;
+ if (size == 16) {
+ if (offset >= lsvlen)
+ retnum = 0;
+ else
+ retnum = (unsigned long) s[offset] << 8;
+ }
+ else if (size == 32) {
+ if (offset >= lsvlen)
+ retnum = 0;
+ else if (offset + 1 >= lsvlen)
+ retnum = (unsigned long) s[offset] << 24;
+ else if (offset + 2 >= lsvlen)
+ retnum = ((unsigned long) s[offset] << 24) +
+ ((unsigned long) s[offset + 1] << 16);
+ else
+ retnum = ((unsigned long) s[offset] << 24) +
+ ((unsigned long) s[offset + 1] << 16) +
+ (s[offset + 2] << 8);
+ }
+ }
+ }
+ else if (size < 8)
+ retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
+ else {
+ offset >>= 3;
+ if (size == 8)
+ retnum = s[offset];
+ else if (size == 16)
+ retnum = ((unsigned long) s[offset] << 8) + s[offset+1];
+ else if (size == 32)
+ retnum = ((unsigned long) s[offset] << 24) +
+ ((unsigned long) s[offset + 1] << 16) +
+ (s[offset + 2] << 8) + s[offset+3];
+ }
+
+ sv_setuv(sv, (UV)retnum);
+ return 0;
+}
+
+int
+magic_setvec(SV *sv, MAGIC *mg)
+{
+ do_vecset(sv); /* XXX slurp this routine */
+ return 0;
+}
+
+int
+magic_getdefelem(SV *sv, MAGIC *mg)
+{
+ SV *targ = Nullsv;
+ if (LvTARGLEN(sv)) {
+ if (mg->mg_obj) {
+ SV *ahv = LvTARG(sv);
+ if (SvTYPE(ahv) == SVt_PVHV) {
+ HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0);
+ if (he)
+ targ = HeVAL(he);
+ }
+ else {
+ SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, FALSE, 0);
+ if (svp)
+ targ = *svp;
+ }
+ }
+ else {
+ AV* av = (AV*)LvTARG(sv);
+ if ((I32)LvTARGOFF(sv) <= AvFILL(av))
+ targ = AvARRAY(av)[LvTARGOFF(sv)];
+ }
+ if (targ && targ != &PL_sv_undef) {
+ dTHR; /* just for SvREFCNT_dec */
+ /* somebody else defined it for us */
+ SvREFCNT_dec(LvTARG(sv));
+ LvTARG(sv) = SvREFCNT_inc(targ);
+ LvTARGLEN(sv) = 0;
+ SvREFCNT_dec(mg->mg_obj);
+ mg->mg_obj = Nullsv;
+ mg->mg_flags &= ~MGf_REFCOUNTED;
+ }
+ }
+ else
+ targ = LvTARG(sv);
+ sv_setsv(sv, targ ? targ : &PL_sv_undef);
+ return 0;
+}
+
+int
+magic_setdefelem(SV *sv, MAGIC *mg)
+{
+ if (LvTARGLEN(sv))
+ vivify_defelem(sv);
+ if (LvTARG(sv)) {
+ sv_setsv(LvTARG(sv), sv);
+ SvSETMAGIC(LvTARG(sv));
+ }
+ return 0;
+}
+
+void
+vivify_defelem(SV *sv)
+{
+ dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/
+ MAGIC *mg;
+ SV *value = Nullsv;
+
+ if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y')))
+ return;
+ if (mg->mg_obj) {
+ SV *ahv = LvTARG(sv);
+ if (SvTYPE(ahv) == SVt_PVHV) {
+ HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0);
+ if (he)
+ value = HeVAL(he);
+ }
+ else {
+ SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, TRUE, 0);
+ if (svp)
+ value = *svp;
+ }
+ if (!value || value == &PL_sv_undef)
+ croak(no_helem, SvPV(mg->mg_obj, PL_na));
+ }
+ else {
+ AV* av = (AV*)LvTARG(sv);
+ if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av))
+ LvTARG(sv) = Nullsv; /* array can't be extended */
+ else {
+ SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE);
+ if (!svp || (value = *svp) == &PL_sv_undef)
+ croak(no_aelem, (I32)LvTARGOFF(sv));
+ }
+ }
+ (void)SvREFCNT_inc(value);
+ SvREFCNT_dec(LvTARG(sv));
+ LvTARG(sv) = value;
+ LvTARGLEN(sv) = 0;
+ SvREFCNT_dec(mg->mg_obj);
+ mg->mg_obj = Nullsv;
+ mg->mg_flags &= ~MGf_REFCOUNTED;
+}
+
+int
+magic_setmglob(SV *sv, MAGIC *mg)
+{
+ mg->mg_len = -1;
+ SvSCREAM_off(sv);
+ return 0;
+}
+
+int
+magic_setbm(SV *sv, MAGIC *mg)
+{
+ sv_unmagic(sv, 'B');
+ SvVALID_off(sv);
+ return 0;
+}
+
+int
+magic_setfm(SV *sv, MAGIC *mg)
+{
+ sv_unmagic(sv, 'f');
+ SvCOMPILED_off(sv);
+ return 0;
+}
+
+int
+magic_setuvar(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_freeregexp(SV *sv, MAGIC *mg)
+{
+ regexp *re = (regexp *)mg->mg_obj;
+ ReREFCNT_dec(re);
+ return 0;
+}
+
+#ifdef USE_LOCALE_COLLATE
+int
+magic_setcollxfrm(SV *sv, MAGIC *mg)
+{
+ /*
+ * René Descartes said "I think not."
+ * and vanished with a faint plop.
+ */
+ if (mg->mg_ptr) {
+ Safefree(mg->mg_ptr);
+ mg->mg_ptr = NULL;
+ mg->mg_len = -1;
+ }
+ return 0;
+}
+#endif /* USE_LOCALE_COLLATE */
+
+int
+magic_set(SV *sv, MAGIC *mg)
+{
+ dTHR;
+ register char *s;
+ I32 i;
+ STRLEN len;
+ switch (*mg->mg_ptr) {
+ case '\001': /* ^A */
+ sv_setsv(PL_bodytarget, sv);
+ break;
+ case '\004': /* ^D */
+ PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
+ DEBUG_x(dump_all());
+ break;
+ case '\005': /* ^E */
+#ifdef VMS
+ set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+#else
+#ifdef WIN32
+ SetLastError( SvIV(sv) );
+#else
+ /* will anyone ever use this? */
+ SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
+#endif
+#endif
+ break;
+ case '\006': /* ^F */
+ PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
+ break;
+ case '\010': /* ^H */
+ PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
+ break;
+ case '\011': /* ^I */ /* NOT \t in EBCDIC */
+ if (PL_inplace)
+ Safefree(PL_inplace);
+ if (SvOK(sv))
+ PL_inplace = savepv(SvPV(sv,PL_na));
+ else
+ PL_inplace = Nullch;
+ break;
+ case '\017': /* ^O */
+ if (PL_osname)
+ Safefree(PL_osname);
+ if (SvOK(sv))
+ PL_osname = savepv(SvPV(sv,PL_na));
+ else
+ PL_osname = Nullch;
+ break;
+ case '\020': /* ^P */
+ PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
+ break;
+ case '\024': /* ^T */
+#ifdef BIG_TIME
+ PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
+#else
+ PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+#endif
+ break;
+ case '\027': /* ^W */
+ PL_dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+ break;
+ case '.':
+ if (PL_localizing) {
+ if (PL_localizing == 1)
+ save_sptr((SV**)&PL_last_in_gv);
+ }
+ else if (SvOK(sv) && GvIO(PL_last_in_gv))
+ IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv);
+ break;
+ case '^':
+ Safefree(IoTOP_NAME(GvIOp(PL_defoutgv)));
+ IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,PL_na));
+ IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
+ break;
+ case '~':
+ Safefree(IoFMT_NAME(GvIOp(PL_defoutgv)));
+ IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,PL_na));
+ IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
+ break;
+ case '=':
+ IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+ break;
+ case '-':
+ IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+ if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L)
+ IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L;
+ break;
+ case '%':
+ IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+ break;
+ case '|':
+ {
+ IO *io = GvIOp(PL_defoutgv);
+ if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0)
+ IoFLAGS(io) &= ~IOf_FLUSH;
+ else {
+ if (!(IoFLAGS(io) & IOf_FLUSH)) {
+ PerlIO *ofp = IoOFP(io);
+ if (ofp)
+ (void)PerlIO_flush(ofp);
+ IoFLAGS(io) |= IOf_FLUSH;
+ }
+ }
+ }
+ break;
+ case '*':
+ i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
+ PL_multiline = (i != 0);
+ break;
+ case '/':
+ SvREFCNT_dec(PL_nrs);
+ PL_nrs = newSVsv(sv);
+ SvREFCNT_dec(PL_rs);
+ PL_rs = SvREFCNT_inc(PL_nrs);
+ break;
+ case '\\':
+ if (PL_ors)
+ Safefree(PL_ors);
+ if (SvOK(sv) || SvGMAGICAL(sv))
+ PL_ors = savepv(SvPV(sv,PL_orslen));
+ else {
+ PL_ors = Nullch;
+ PL_orslen = 0;
+ }
+ break;
+ case ',':
+ if (PL_ofs)
+ Safefree(PL_ofs);
+ PL_ofs = savepv(SvPV(sv, PL_ofslen));
+ break;
+ case '#':
+ if (PL_ofmt)
+ Safefree(PL_ofmt);
+ PL_ofmt = savepv(SvPV(sv,PL_na));
+ break;
+ case '[':
+ PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
+ break;
+ case '?':
+#ifdef COMPLEX_STATUS
+ if (PL_localizing == 2) {
+ PL_statusvalue = LvTARGOFF(sv);
+ PL_statusvalue_vms = LvTARGLEN(sv);
+ }
+ else
+#endif
+#ifdef VMSISH_STATUS
+ if (VMSISH_STATUS)
+ STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)));
+ else
+#endif
+ STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+ break;
+ case '!':
+ SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0,
+ (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
+ break;
+ case '<':
+ PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
+ if (PL_delaymagic) {
+ PL_delaymagic |= DM_RUID;
+ break; /* don't do magic till later */
+ }
+#ifdef HAS_SETRUID
+ (void)setruid((Uid_t)PL_uid);
+#else
+#ifdef HAS_SETREUID
+ (void)setreuid((Uid_t)PL_uid, (Uid_t)-1);
+#else
+#ifdef HAS_SETRESUID
+ (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1);
+#else
+ if (PL_uid == PL_euid) /* special case $< = $> */
+ (void)PerlProc_setuid(PL_uid);
+ else {
+ PL_uid = (I32)PerlProc_getuid();
+ croak("setruid() not implemented");
+ }
+#endif
+#endif
+#endif
+ PL_uid = (I32)PerlProc_getuid();
+ PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
+ break;
+ case '>':
+ PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
+ if (PL_delaymagic) {
+ PL_delaymagic |= DM_EUID;
+ break; /* don't do magic till later */
+ }
+#ifdef HAS_SETEUID
+ (void)seteuid((Uid_t)PL_euid);
+#else
+#ifdef HAS_SETREUID
+ (void)setreuid((Uid_t)-1, (Uid_t)PL_euid);
+#else
+#ifdef HAS_SETRESUID
+ (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1);
+#else
+ if (PL_euid == PL_uid) /* special case $> = $< */
+ PerlProc_setuid(PL_euid);
+ else {
+ PL_euid = (I32)PerlProc_geteuid();
+ croak("seteuid() not implemented");
+ }
+#endif
+#endif
+#endif
+ PL_euid = (I32)PerlProc_geteuid();
+ PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
+ break;
+ case '(':
+ PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
+ if (PL_delaymagic) {
+ PL_delaymagic |= DM_RGID;
+ break; /* don't do magic till later */
+ }
+#ifdef HAS_SETRGID
+ (void)setrgid((Gid_t)PL_gid);
+#else
+#ifdef HAS_SETREGID
+ (void)setregid((Gid_t)PL_gid, (Gid_t)-1);
+#else
+#ifdef HAS_SETRESGID
+ (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1);
+#else
+ if (PL_gid == PL_egid) /* special case $( = $) */
+ (void)PerlProc_setgid(PL_gid);
+ else {
+ PL_gid = (I32)PerlProc_getgid();
+ croak("setrgid() not implemented");
+ }
+#endif
+#endif
+#endif
+ PL_gid = (I32)PerlProc_getgid();
+ PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
+ break;
+ case ')':
+#ifdef HAS_SETGROUPS
+ {
+ char *p = SvPV(sv, PL_na);
+ Groups_t gary[NGROUPS];
+
+ SET_NUMERIC_STANDARD();
+ while (isSPACE(*p))
+ ++p;
+ PL_egid = I_V(atof(p));
+ for (i = 0; i < NGROUPS; ++i) {
+ while (*p && !isSPACE(*p))
+ ++p;
+ while (isSPACE(*p))
+ ++p;
+ if (!*p)
+ break;
+ gary[i] = I_V(atof(p));
+ }
+ if (i)
+ (void)setgroups(i, gary);
+ }
+#else /* HAS_SETGROUPS */
+ PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
+#endif /* HAS_SETGROUPS */
+ if (PL_delaymagic) {
+ PL_delaymagic |= DM_EGID;
+ break; /* don't do magic till later */
+ }
+#ifdef HAS_SETEGID
+ (void)setegid((Gid_t)PL_egid);
+#else
+#ifdef HAS_SETREGID
+ (void)setregid((Gid_t)-1, (Gid_t)PL_egid);
+#else
+#ifdef HAS_SETRESGID
+ (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1);
+#else
+ if (PL_egid == PL_gid) /* special case $) = $( */
+ (void)PerlProc_setgid(PL_egid);
+ else {
+ PL_egid = (I32)PerlProc_getegid();
+ croak("setegid() not implemented");
+ }
+#endif
+#endif
+#endif
+ PL_egid = (I32)PerlProc_getegid();
+ PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
+ break;
+ case ':':
+ PL_chopset = SvPV_force(sv,PL_na);
+ break;
+ case '0':
+ if (!PL_origalen) {
+ s = PL_origargv[0];
+ s += strlen(s);
+ /* See if all the arguments are contiguous in memory */
+ for (i = 1; i < PL_origargc; i++) {
+ if (PL_origargv[i] == s + 1
+#ifdef OS2
+ || PL_origargv[i] == s + 2
+#endif
+ )
+ s += strlen(++s); /* this one is ok too */
+ else
+ break;
+ }
+ /* can grab env area too? */
+ if (PL_origenviron && (PL_origenviron[0] == s + 1
+#ifdef OS2
+ || (PL_origenviron[0] == s + 9 && (s += 8))
+#endif
+ )) {
+ my_setenv("NoNe SuCh", Nullch);
+ /* force copy of environment */
+ for (i = 0; PL_origenviron[i]; i++)
+ if (PL_origenviron[i] == s + 1)
+ s += strlen(++s);
+ else
+ break;
+ }
+ PL_origalen = s - PL_origargv[0];
+ }
+ s = SvPV_force(sv,len);
+ i = len;
+ if (i >= PL_origalen) {
+ i = PL_origalen;
+ /* don't allow system to limit $0 seen by script */
+ /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */
+ Copy(s, PL_origargv[0], i, char);
+ s = PL_origargv[0]+i;
+ *s = '\0';
+ }
+ else {
+ Copy(s, PL_origargv[0], i, char);
+ s = PL_origargv[0]+i;
+ *s++ = '\0';
+ while (++i < PL_origalen)
+ *s++ = ' ';
+ s = PL_origargv[0]+i;
+ for (i = 1; i < PL_origargc; i++)
+ PL_origargv[i] = Nullch;
+ }
+ break;
+#ifdef USE_THREADS
+ case '@':
+ sv_setsv(thr->errsv, sv);
+ break;
+#endif /* USE_THREADS */
+ }
+ return 0;
+}
+
+#ifdef USE_THREADS
+int
+magic_mutexfree(SV *sv, MAGIC *mg)
+{
+ dTHR;
+ DEBUG_S(PerlIO_printf(PerlIO_stderr(), "0x%lx: magic_mutexfree 0x%lx\n",
+ (unsigned long)thr, (unsigned long)sv);)
+ if (MgOWNER(mg))
+ croak("panic: magic_mutexfree");
+ MUTEX_DESTROY(MgMUTEXP(mg));
+ COND_DESTROY(MgCONDP(mg));
+ SvREFCNT_dec(sv);
+ return 0;
+}
+#endif /* USE_THREADS */
+
+I32
+whichsig(char *sig)
+{
+ register char **sigv;
+
+ for (sigv = sig_name+1; *sigv; sigv++)
+ if (strEQ(sig,*sigv))
+ return sig_num[sigv - sig_name];
+#ifdef SIGCLD
+ if (strEQ(sig,"CHLD"))
+ return SIGCLD;
+#endif
+#ifdef SIGCHLD
+ if (strEQ(sig,"CLD"))
+ return SIGCHLD;
+#endif
+ return 0;
+}
+
+static SV* sig_sv;
+
+STATIC void
+unwind_handler_stack(void *p)
+{
+ dTHR;
+ U32 flags = *(U32*)p;
+
+ if (flags & 1)
+ PL_savestack_ix -= 5; /* Unprotect save in progress. */
+ /* cxstack_ix-- Not needed, die already unwound it. */
+ if (flags & 64)
+ SvREFCNT_dec(sig_sv);
+}
+
+Signal_t
+sighandler(int sig)
+{
+ dSP;
+ GV *gv = Nullgv;
+ HV *st;
+ SV *sv, *tSv = PL_Sv;
+ CV *cv = Nullcv;
+ OP *myop = PL_op;
+ U32 flags = 0;
+ I32 o_save_i = PL_savestack_ix, type;
+ XPV *tXpv = PL_Xpv;
+
+ if (PL_savestack_ix + 15 <= PL_savestack_max)
+ flags |= 1;
+ if (PL_markstack_ptr < PL_markstack_max - 2)
+ flags |= 4;
+ if (PL_retstack_ix < PL_retstack_max - 2)
+ flags |= 8;
+ if (PL_scopestack_ix < PL_scopestack_max - 3)
+ flags |= 16;
+
+ if (!psig_ptr[sig])
+ die("Signal SIG%s received, but no signal handler set.\n",
+ sig_name[sig]);
+
+ /* Max number of items pushed there is 3*n or 4. We cannot fix
+ infinity, so we fix 4 (in fact 5): */
+ if (flags & 1) {
+ PL_savestack_ix += 5; /* Protect save in progress. */
+ o_save_i = PL_savestack_ix;
+ SAVEDESTRUCTOR(unwind_handler_stack, (void*)&flags);
+ }
+ if (flags & 4)
+ PL_markstack_ptr++; /* Protect mark. */
+ if (flags & 8) {
+ PL_retstack_ix++;
+ PL_retstack[PL_retstack_ix] = NULL;
+ }
+ if (flags & 16)
+ PL_scopestack_ix += 1;
+ /* sv_2cv is too complicated, try a simpler variant first: */
+ if (!SvROK(psig_ptr[sig]) || !(cv = (CV*)SvRV(psig_ptr[sig]))
+ || SvTYPE(cv) != SVt_PVCV)
+ cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE);
+
+ if (!cv || !CvROOT(cv)) {
+ if (PL_dowarn)
+ warn("SIG%s handler \"%s\" not defined.\n",
+ sig_name[sig], (gv ? GvENAME(gv)
+ : ((cv && CvGV(cv))
+ ? GvENAME(CvGV(cv))
+ : "__ANON__")));
+ goto cleanup;
+ }
+
+ if(psig_name[sig]) {
+ sv = SvREFCNT_inc(psig_name[sig]);
+ flags |= 64;
+ sig_sv = sv;
+ } else {
+ sv = sv_newmortal();
+ sv_setpv(sv,sig_name[sig]);
+ }
+
+ PUSHSTACKi(PERLSI_SIGNAL);
+ PUSHMARK(SP);
+ PUSHs(sv);
+ PUTBACK;
+
+ perl_call_sv((SV*)cv, G_DISCARD);
+
+ POPSTACK;
+cleanup:
+ if (flags & 1)
+ PL_savestack_ix -= 8; /* Unprotect save in progress. */
+ if (flags & 4)
+ PL_markstack_ptr--;
+ 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;
+}
+
+
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