#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#define INCL_BASE
#define INCL_REXXSAA
#include <os2emx.h>
#if 0
#define INCL_REXXSAA
#pragma pack(1)
#define _Packed
#include <rexxsaa.h>
#pragma pack()
#endif
extern ULONG _emx_exception ( EXCEPTIONREPORTRECORD *,
EXCEPTIONREGISTRATIONRECORD *,
CONTEXTRECORD *,
void *);
static RXSTRING * strs;
static int nstrs;
static SHVBLOCK * vars;
static int nvars;
static char * trace;
static RXSTRING rxcommand = { 9, "RXCOMMAND" };
static RXSTRING rxsubroutine = { 12, "RXSUBROUTINE" };
static RXSTRING rxfunction = { 11, "RXFUNCTION" };
static ULONG PERLCALL(PCSZ name, ULONG argc, PRXSTRING argv, PCSZ queue, PRXSTRING ret);
#if 1
#define Set RXSHV_SET
#define Fetch RXSHV_FETCH
#define Drop RXSHV_DROPV
#else
#define Set RXSHV_SYSET
#define Fetch RXSHV_SYFET
#define Drop RXSHV_SYDRO
#endif
static long incompartment;
static SV*
exec_in_REXX(pTHX_ char *cmd, char * handlerName, RexxFunctionHandler *handler)
{
HMODULE hRexx, hRexxAPI;
BYTE buf[200];
LONG APIENTRY (*pRexxStart) (LONG, PRXSTRING, PSZ, PRXSTRING,
PSZ, LONG, PRXSYSEXIT, PSHORT, PRXSTRING);
APIRET APIENTRY (*pRexxRegisterFunctionExe) (PSZ,
RexxFunctionHandler *);
APIRET APIENTRY (*pRexxDeregisterFunction) (PSZ);
RXSTRING args[1];
RXSTRING inst[2];
RXSTRING result;
USHORT retcode;
LONG rc;
SV *res;
if (incompartment)
Perl_die(aTHX_ "Attempt to reenter into REXX compartment");
incompartment = 1;
if (DosLoadModule(buf, sizeof buf, "REXX", &hRexx)
|| DosLoadModule(buf, sizeof buf, "REXXAPI", &hRexxAPI)
|| DosQueryProcAddr(hRexx, 0, "RexxStart", (PFN *)&pRexxStart)
|| DosQueryProcAddr(hRexxAPI, 0, "RexxRegisterFunctionExe",
(PFN *)&pRexxRegisterFunctionExe)
|| DosQueryProcAddr(hRexxAPI, 0, "RexxDeregisterFunction",
(PFN *)&pRexxDeregisterFunction)) {
Perl_die(aTHX_ "REXX not available\n");
}
if (handlerName)
pRexxRegisterFunctionExe(handlerName, handler);
MAKERXSTRING(args[0], NULL, 0);
MAKERXSTRING(inst[0], cmd, strlen(cmd));
MAKERXSTRING(inst[1], NULL, 0);
MAKERXSTRING(result, NULL, 0);
rc = pRexxStart(0, args, "StartPerl", inst, "Perl", RXSUBROUTINE, NULL,
&retcode, &result);
incompartment = 0;
pRexxDeregisterFunction("StartPerl");
DosFreeModule(hRexxAPI);
DosFreeModule(hRexx);
if (!RXNULLSTRING(result)) {
res = newSVpv(RXSTRPTR(result), RXSTRLEN(result));
DosFreeMem(RXSTRPTR(result));
} else {
res = NEWSV(729,0);
}
if (rc || SvTRUE(GvSV(PL_errgv))) {
if (SvTRUE(GvSV(PL_errgv))) {
STRLEN n_a;
Perl_die(aTHX_ "Error inside perl function called from REXX compartment:\n%s", SvPV(GvSV(PL_errgv), n_a)) ;
}
Perl_die(aTHX_ "REXX compartment returned non-zero status %li", rc);
}
return res;
}
static SV* exec_cv;
static ULONG
PERLSTART(PCSZ name, ULONG argc, PRXSTRING argv, PCSZ queue, PRXSTRING ret)
{
return PERLCALL(NULL, argc, argv, queue, ret);
}
#define in_rexx_compartment() exec_in_REXX(aTHX_ "return StartPerl()\r\n", \
"StartPerl", PERLSTART)
#define REXX_call(cv) ( exec_cv = (cv), in_rexx_compartment())
#define REXX_eval_with(cmd,name,cv) ( exec_cv = (cv), \
exec_in_REXX(aTHX_ cmd,name,PERLSTART))
#define REXX_eval(cmd) REXX_eval_with(cmd,NULL,NULL)
static ULONG
PERLCALL(PCSZ name, ULONG argc, PRXSTRING argv, PCSZ queue, PRXSTRING ret)
{
dTHX;
EXCEPTIONREGISTRATIONRECORD xreg = { NULL, _emx_exception };
int i, rc;
unsigned long len;
char *str;
char **arr;
SV *res;
dSP;
DosSetExceptionHandler(&xreg);
ENTER;
SAVETMPS;
PUSHMARK(SP);
#if 0
if (!my_perl) {
DosUnsetExceptionHandler(&xreg);
return 1;
}
#endif
for (i = 0; i < argc; ++i)
XPUSHs(sv_2mortal(newSVpvn(argv[i].strptr, argv[i].strlength)));
PUTBACK;
if (name) {
rc = perl_call_pv(name, G_SCALAR | G_EVAL);
} else if (exec_cv) {
SV *cv = exec_cv;
exec_cv = NULL;
rc = perl_call_sv(cv, G_SCALAR | G_EVAL);
} else
rc = -1;
SPAGAIN;
if (rc == 1) /* must be! */
res = POPs;
if (rc == 1 && SvOK(res)) {
str = SvPVx(res, len);
if (len <= 256 /* Default buffer is 256-char long */
|| !CheckOSError(DosAllocMem((PPVOID)&ret->strptr, len,
PAG_READ|PAG_WRITE|PAG_COMMIT))) {
memcpy(ret->strptr, str, len);
ret->strlength = len;
} else
rc = 0;
} else
rc = 0;
PUTBACK ;
FREETMPS ;
LEAVE ;
DosUnsetExceptionHandler(&xreg);
return rc == 1 ? 0 : 1; /* 0 means SUCCESS */
}
static void
needstrs(int n)
{
if (n > nstrs) {
if (strs)
free(strs);
nstrs = 2 * n;
strs = malloc(nstrs * sizeof(RXSTRING));
}
}
static void
needvars(int n)
{
if (n > nvars) {
if (vars)
free(vars);
nvars = 2 * n;
vars = malloc(nvars * sizeof(SHVBLOCK));
}
}
static void
initialize(void)
{
needstrs(8);
needvars(8);
trace = getenv("PERL_REXX_DEBUG");
}
static int
constant(char *name, int arg)
{
errno = EINVAL;
return 0;
}
MODULE = OS2::REXX PACKAGE = OS2::REXX
BOOT:
initialize();
int
constant(name,arg)
char * name
int arg
int
_set(name,value,...)
char * name
char * value
CODE:
{
int i;
int n = (items + 1) / 2;
ULONG rc;
needvars(n);
if (trace)
fprintf(stderr, "REXXCALL::_set");
for (i = 0; i < n; ++i) {
SHVBLOCK * var = &vars[i];
STRLEN namelen;
STRLEN valuelen;
name = SvPV(ST(2*i+0),namelen);
if (2*i+1 < items) {
value = SvPV(ST(2*i+1),valuelen);
}
else {
value = "";
valuelen = 0;
}
var->shvcode = RXSHV_SET;
var->shvnext = &vars[i+1];
var->shvnamelen = namelen;
var->shvvaluelen = valuelen;
MAKERXSTRING(var->shvname, name, namelen);
MAKERXSTRING(var->shvvalue, value, valuelen);
if (trace)
fprintf(stderr, " %.*s='%.*s'",
var->shvname.strlength, var->shvname.strptr,
var->shvvalue.strlength, var->shvvalue.strptr);
}
if (trace)
fprintf(stderr, "\n");
vars[n-1].shvnext = NULL;
rc = RexxVariablePool(vars);
if (trace)
fprintf(stderr, " rc=%X\n", rc);
RETVAL = (rc & ~RXSHV_NEWV) ? FALSE : TRUE;
}
OUTPUT:
RETVAL
void
_fetch(name, ...)
char * name
PPCODE:
{
int i;
ULONG rc;
EXTEND(SP, items);
needvars(items);
if (trace)
fprintf(stderr, "REXXCALL::_fetch");
for (i = 0; i < items; ++i) {
SHVBLOCK * var = &vars[i];
STRLEN namelen;
name = SvPV(ST(i),namelen);
var->shvcode = RXSHV_FETCH;
var->shvnext = &vars[i+1];
var->shvnamelen = namelen;
var->shvvaluelen = 0;
MAKERXSTRING(var->shvname, name, namelen);
MAKERXSTRING(var->shvvalue, NULL, 0);
if (trace)
fprintf(stderr, " '%s'", name);
}
if (trace)
fprintf(stderr, "\n");
vars[items-1].shvnext = NULL;
rc = RexxVariablePool(vars);
if (!(rc & ~RXSHV_NEWV)) {
for (i = 0; i < items; ++i) {
int namelen;
SHVBLOCK * var = &vars[i];
/* returned lengths appear to be swapped */
/* but beware of "future bug fixes" */
namelen = var->shvvalue.strlength; /* should be */
if (var->shvvaluelen < var->shvvalue.strlength)
namelen = var->shvvaluelen; /* is */
if (trace)
fprintf(stderr, " %.*s='%.*s'\n",
var->shvname.strlength, var->shvname.strptr,
namelen, var->shvvalue.strptr);
if (var->shvret & RXSHV_NEWV || !var->shvvalue.strptr)
PUSHs(&PL_sv_undef);
else
PUSHs(sv_2mortal(newSVpv(var->shvvalue.strptr,
namelen)));
}
} else {
if (trace)
fprintf(stderr, " rc=%X\n", rc);
}
}
void
_next(stem)
char * stem
PPCODE:
{
SHVBLOCK sv;
BYTE name[4096];
ULONG rc;
int len = strlen(stem), namelen, valuelen;
if (trace)
fprintf(stderr, "REXXCALL::_next stem='%s'\n", stem);
sv.shvcode = RXSHV_NEXTV;
sv.shvnext = NULL;
MAKERXSTRING(sv.shvvalue, NULL, 0);
do {
sv.shvnamelen = sizeof name;
sv.shvvaluelen = 0;
MAKERXSTRING(sv.shvname, name, sizeof name);
if (sv.shvvalue.strptr) {
DosFreeMem(sv.shvvalue.strptr);
MAKERXSTRING(sv.shvvalue, NULL, 0);
}
rc = RexxVariablePool(&sv);
} while (!rc && memcmp(stem, sv.shvname.strptr, len) != 0);
if (!rc) {
EXTEND(SP, 2);
/* returned lengths appear to be swapped */
/* but beware of "future bug fixes" */
namelen = sv.shvname.strlength; /* should be */
if (sv.shvnamelen < sv.shvname.strlength)
namelen = sv.shvnamelen; /* is */
valuelen = sv.shvvalue.strlength; /* should be */
if (sv.shvvaluelen < sv.shvvalue.strlength)
valuelen = sv.shvvaluelen; /* is */
if (trace)
fprintf(stderr, " %.*s='%.*s'\n",
namelen, sv.shvname.strptr,
valuelen, sv.shvvalue.strptr);
PUSHs(sv_2mortal(newSVpv(sv.shvname.strptr+len, namelen-len)));
if (sv.shvvalue.strptr) {
PUSHs(sv_2mortal(newSVpv(sv.shvvalue.strptr, valuelen)));
DosFreeMem(sv.shvvalue.strptr);
} else
PUSHs(&PL_sv_undef);
} else if (rc != RXSHV_LVAR) {
die("Error %i when in _next", rc);
} else {
if (trace)
fprintf(stderr, " rc=%X\n", rc);
}
}
int
_drop(name,...)
char * name
CODE:
{
int i;
needvars(items);
for (i = 0; i < items; ++i) {
SHVBLOCK * var = &vars[i];
STRLEN namelen;
name = SvPV(ST(i),namelen);
var->shvcode = RXSHV_DROPV;
var->shvnext = &vars[i+1];
var->shvnamelen = namelen;
var->shvvaluelen = 0;
MAKERXSTRING(var->shvname, name, var->shvnamelen);
MAKERXSTRING(var->shvvalue, NULL, 0);
}
vars[items-1].shvnext = NULL;
RETVAL = (RexxVariablePool(vars) & ~RXSHV_NEWV) ? FALSE : TRUE;
}
OUTPUT:
RETVAL
int
_register(name)
char * name
CODE:
RETVAL = RexxRegisterFunctionExe(name, PERLCALL);
OUTPUT:
RETVAL
SV*
REXX_call(cv)
SV *cv
PROTOTYPE: &
SV*
REXX_eval(cmd)
char *cmd
SV*
REXX_eval_with(cmd,name,cv)
char *cmd
char *name
SV *cv