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/* VMS::Stdio - VMS extensions to stdio routines
*
* Version: 2.0
* Author: Charles Bailey bailey@genetics.upenn.edu
* Revised: 28-Feb-1996
*
*/
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include <file.h>
static bool
constant(name, pval)
char *name;
IV *pval;
{
if (strnNE(name, "O_", 2)) return FALSE;
if (strEQ(name, "O_APPEND"))
#ifdef O_APPEND
{ *pval = O_APPEND; return TRUE; }
#else
return FALSE;
#endif
if (strEQ(name, "O_CREAT"))
#ifdef O_CREAT
{ *pval = O_CREAT; return TRUE; }
#else
return FALSE;
#endif
if (strEQ(name, "O_EXCL"))
#ifdef O_EXCL
{ *pval = O_EXCL; return TRUE; }
#else
return FALSE;
#endif
if (strEQ(name, "O_NDELAY"))
#ifdef O_NDELAY
{ *pval = O_NDELAY; return TRUE; }
#else
return FALSE;
#endif
if (strEQ(name, "O_NOWAIT"))
#ifdef O_NOWAIT
{ *pval = O_NOWAIT; return TRUE; }
#else
return FALSE;
#endif
if (strEQ(name, "O_RDONLY"))
#ifdef O_RDONLY
{ *pval = O_RDONLY; return TRUE; }
#else
return FALSE;
#endif
if (strEQ(name, "O_RDWR"))
#ifdef O_RDWR
{ *pval = O_RDWR; return TRUE; }
#else
return FALSE;
#endif
if (strEQ(name, "O_TRUNC"))
#ifdef O_TRUNC
{ *pval = O_TRUNC; return TRUE; }
#else
return FALSE;
#endif
if (strEQ(name, "O_WRONLY"))
#ifdef O_WRONLY
{ *pval = O_WRONLY; return TRUE; }
#else
return FALSE;
#endif
return FALSE;
}
static SV *
newFH(FILE *fp, char type) {
SV *rv;
GV **stashp, *gv = (GV *)NEWSV(0,0);
HV *stash;
IO *io;
/* Find stash for VMS::Stdio. We don't do this once at boot
* to allow for possibility of threaded Perl with per-thread
* symbol tables. This code (through io = ...) is really
* equivalent to gv_fetchpv("VMS::Stdio::__FH__",TRUE,SVt_PVIO),
* with a little less overhead, and good exercise for me. :-) */
stashp = (GV **)hv_fetch(defstash,"VMS::",5,TRUE);
if (!stashp || *stashp == (GV *)&sv_undef) return Nullsv;
if (!(stash = GvHV(*stashp))) stash = GvHV(*stashp) = newHV();
stashp = (GV **)hv_fetch(GvHV(*stashp),"Stdio::",7,TRUE);
if (!stashp || *stashp == (GV *)&sv_undef) return Nullsv;
if (!(stash = GvHV(*stashp))) stash = GvHV(*stashp) = newHV();
/* Set up GV to point to IO, and then take reference */
gv_init(gv,stash,"__FH__",6,0);
io = GvIOp(gv) = newIO();
IoIFP(io) = fp;
if (type != '<') IoOFP(io) = fp;
IoTYPE(io) = type;
rv = newRV((SV *)gv);
SvREFCNT_dec(gv);
return sv_bless(rv,stash);
}
MODULE = VMS::Stdio PACKAGE = VMS::Stdio
void
constant(name)
char * name
PROTOTYPE: $
CODE:
IV i;
if (constant(name, &i))
ST(0) = sv_2mortal(newSViv(i));
else
ST(0) = &sv_undef;
void
flush(sv)
SV * sv
PROTOTYPE: $
CODE:
FILE *fp = Nullfp;
if (SvOK(sv)) fp = IoIFP(sv_2io(sv));
ST(0) = fflush(fp) ? &sv_undef : &sv_yes;
char *
getname(fp)
FILE * fp
PROTOTYPE: $
CODE:
char fname[257];
ST(0) = sv_newmortal();
if (fgetname(fp,fname) != NULL) sv_setpv(ST(0),fname);
void
rewind(fp)
FILE * fp
PROTOTYPE: $
CODE:
ST(0) = rewind(fp) ? &sv_undef : &sv_yes;
void
remove(name)
char *name
PROTOTYPE: $
CODE:
ST(0) = remove(name) ? &sv_undef : &sv_yes;
void
sync(fp)
FILE * fp
PROTOTYPE: $
CODE:
ST(0) = fsync(fileno(fp)) ? &sv_undef : &sv_yes;
char *
tmpnam()
PROTOTYPE:
CODE:
char fname[L_tmpnam];
ST(0) = sv_newmortal();
if (tmpnam(fname) != NULL) sv_setpv(ST(0),fname);
void
vmsopen(spec,...)
char * spec
PROTOTYPE: @
CODE:
char *args[8],mode[3] = {'r','\0','\0'}, type = '<';
register int i, myargc;
FILE *fp;
if (!spec || !*spec) {
SETERRNO(EINVAL,LIB$_INVARG);
XSRETURN_UNDEF;
}
if (items > 9) croak("too many args");
/* First, set up name and mode args from perl's string */
if (*spec == '+') {
mode[1] = '+';
spec++;
}
if (*spec == '>') {
if (*(spec+1) == '>') *mode = 'a', spec += 2;
else *mode = 'w', spec++;
}
else if (*spec == '<') spec++;
myargc = items - 1;
for (i = 0; i < myargc; i++) args[i] = SvPV(ST(i+1),na);
/* This hack brought to you by C's opaque arglist management */
switch (myargc) {
case 0:
fp = fopen(spec,mode);
break;
case 1:
fp = fopen(spec,mode,args[0]);
break;
case 2:
fp = fopen(spec,mode,args[0],args[1]);
break;
case 3:
fp = fopen(spec,mode,args[0],args[1],args[2]);
break;
case 4:
fp = fopen(spec,mode,args[0],args[1],args[2],args[3]);
break;
case 5:
fp = fopen(spec,mode,args[0],args[1],args[2],args[3],args[4]);
break;
case 6:
fp = fopen(spec,mode,args[0],args[1],args[2],args[3],args[4],args[5]);
break;
case 7:
fp = fopen(spec,mode,args[0],args[1],args[2],args[3],args[4],args[5],args[6]);
break;
case 8:
fp = fopen(spec,mode,args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]);
break;
}
if (fp != Nullfp) {
SV *fh = newFH(fp,(mode[1] ? '+' : (mode[0] == 'r' ? '<' : (mode[0] == 'a' ? 'a' : '>'))));
ST(0) = (fh ? sv_2mortal(fh) : &sv_undef);
}
else { ST(0) = &sv_undef; }
void
vmssysopen(spec,mode,perm,...)
char * spec
int mode
int perm
PROTOTYPE: @
CODE:
char *args[8];
int i, myargc, fd;
FILE *fp;
SV *fh;
if (!spec || !*spec) {
SETERRNO(EINVAL,LIB$_INVARG);
XSRETURN_UNDEF;
}
if (items > 11) croak("too many args");
myargc = items - 3;
for (i = 0; i < myargc; i++) args[i] = SvPV(ST(i+3),na);
/* More fun with C calls; can't combine with above because
args 2,3 of different types in fopen() and open() */
switch (myargc) {
case 0:
fd = open(spec,mode,perm);
break;
case 1:
fd = open(spec,mode,perm,args[0]);
break;
case 2:
fd = open(spec,mode,perm,args[0],args[1]);
break;
case 3:
fd = open(spec,mode,perm,args[0],args[1],args[2]);
break;
case 4:
fd = open(spec,mode,perm,args[0],args[1],args[2],args[3]);
break;
case 5:
fd = open(spec,mode,perm,args[0],args[1],args[2],args[3],args[4]);
break;
case 6:
fd = open(spec,mode,perm,args[0],args[1],args[2],args[3],args[4],args[5]);
break;
case 7:
fd = open(spec,mode,perm,args[0],args[1],args[2],args[3],args[4],args[5],args[6]);
break;
case 8:
fd = open(spec,mode,perm,args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]);
break;
}
i = mode & 3;
if (fd >= 0 &&
((fp = fdopen(fd, &("r\000w\000r+"[2*i]))) != Nullfp)) {
SV *fh = newFH(fp,"<>++"[i]);
ST(0) = (fh ? sv_2mortal(fh) : &sv_undef);
}
else { ST(0) = &sv_undef; }
void
waitfh(fp)
FILE * fp
PROTOTYPE: $
CODE:
ST(0) = fwait(fp) ? &sv_undef : &sv_yes;
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