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/* VMS::DCLsym - manipulate DCL symbols
*
* Version: 1.0
* Author: Charles Bailey bailey@newman.upenn.edu
* Revised: 17-Aug-1995
*
*
* Revision History:
*
* 1.0 17-Aug-1995 Charles Bailey bailey@newman.upenn.edu
* original production version
*/
#include <descrip.h>
#include <lib$routines.h>
#include <libclidef.h>
#include <libdef.h>
#include <ssdef.h>
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
MODULE = VMS::DCLsym PACKAGE = VMS::DCLsym
void
_getsym(name)
SV * name
PPCODE:
{
struct dsc$descriptor_s namdsc = {0,DSC$K_DTYPE_T,DSC$K_CLASS_S,0},
valdsc = {0,DSC$K_DTYPE_T,DSC$K_CLASS_D,0};
STRLEN namlen;
int tbltype;
unsigned long int retsts;
SETERRNO(0,SS$_NORMAL);
if (!name) {
PUSHs(sv_newmortal());
SETERRNO(EINVAL,LIB$_INVARG);
return;
}
namdsc.dsc$a_pointer = SvPV(name,namlen);
namdsc.dsc$w_length = (unsigned short int) namlen;
retsts = lib$get_symbol(&namdsc,&valdsc,0,&tbltype);
if (retsts & 1) {
PUSHs(sv_2mortal(newSVpv(valdsc.dsc$w_length ?
valdsc.dsc$a_pointer : "",valdsc.dsc$w_length)));
EXTEND(sp,2); /* just in case we're at the end of the stack */
if (tbltype == LIB$K_CLI_LOCAL_SYM)
PUSHs(sv_2mortal(newSVpv("LOCAL",5)));
else
PUSHs(sv_2mortal(newSVpv("GLOBAL",6)));
_ckvmssts(lib$sfree1_dd(&valdsc));
}
else {
/* error - we'll return an empty list */
switch (retsts) {
case LIB$_NOSUCHSYM:
break; /* nobody home */;
case LIB$_INVSYMNAM: /* user errors; set errno return undef */
case LIB$_INSCLIMEM:
case LIB$_NOCLI:
set_errno(EVMSERR);
set_vaxc_errno(retsts);
break;
default: /* bail out */
{ _ckvmssts(retsts); }
}
}
}
void
_setsym(name,val,typestr="LOCAL")
SV * name
SV * val
char * typestr
CODE:
{
struct dsc$descriptor_s namdsc = {0,DSC$K_DTYPE_T,DSC$K_CLASS_S,0},
valdsc = {0,DSC$K_DTYPE_T,DSC$K_CLASS_S,0};
STRLEN slen;
int type;
unsigned long int retsts;
SETERRNO(0,SS$_NORMAL);
if (!name || !val) {
SETERRNO(EINVAL,LIB$_INVARG);
XSRETURN_UNDEF;
}
namdsc.dsc$a_pointer = SvPV(name,slen);
namdsc.dsc$w_length = (unsigned short int) slen;
valdsc.dsc$a_pointer = SvPV(val,slen);
valdsc.dsc$w_length = (unsigned short int) slen;
type = strNE(typestr,"GLOBAL") ?
LIB$K_CLI_LOCAL_SYM : LIB$K_CLI_GLOBAL_SYM;
retsts = lib$set_symbol(&namdsc,&valdsc,&type);
if (retsts & 1) { XSRETURN_YES; }
else {
switch (retsts) {
case LIB$_AMBSYMDEF: /* user errors; set errno and return */
case LIB$_INSCLIMEM:
case LIB$_INVSYMNAM:
case LIB$_NOCLI:
set_errno(EVMSERR);
set_vaxc_errno(retsts);
XSRETURN_NO;
break; /* NOTREACHED */
default: /* bail out */
{ _ckvmssts(retsts); }
}
}
}
void
_delsym(name,typestr="LOCAL")
SV * name
char * typestr
CODE:
{
struct dsc$descriptor_s namdsc = {0,DSC$K_DTYPE_T,DSC$K_CLASS_S,0};
STRLEN slen;
int type;
unsigned long int retsts;
SETERRNO(0,SS$_NORMAL);
if (!name || !typestr) {
SETERRNO(EINVAL,LIB$_INVARG);
XSRETURN_UNDEF;
}
namdsc.dsc$a_pointer = SvPV(name,slen);
namdsc.dsc$w_length = (unsigned short int) slen;
type = strNE(typestr,"GLOBAL") ?
LIB$K_CLI_LOCAL_SYM : LIB$K_CLI_GLOBAL_SYM;
retsts = lib$delete_symbol(&namdsc,&type);
if (retsts & 1) { XSRETURN_YES; }
else {
switch (retsts) {
case LIB$_INVSYMNAM: /* user errors; set errno and return */
case LIB$_NOCLI:
case LIB$_NOSUCHSYM:
set_errno(EVMSERR);
set_vaxc_errno(retsts);
XSRETURN_NO;
break; /* NOTREACHED */
default: /* bail out */
{ _ckvmssts(retsts); }
}
}
}
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