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#include <lua.h>
#include <lauxlib.h>
#include <lualib.h>
#include <tcl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MYNAME "tcl2lua"
#define MYVERSION MYNAME " 0.1"
static char* resultStr;
static Tcl_Interp *interp = NULL;
int setResultsObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])
{
int len;
Tcl_Obj *objPtr;
int i;
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "value");
return TCL_ERROR;
}
objPtr = objv[1];
resultStr = Tcl_GetStringFromObj(objPtr, &len);
if (resultStr[0] == '\0')
return TCL_ERROR;
return TCL_OK;
}
int Tcl_AppInit(Tcl_Interp* interp)
{
if (Tcl_Init(interp) == TCL_ERROR)
return TCL_ERROR;
Tcl_CreateObjCommand(interp,"setResults", setResultsObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
return TCL_OK;
}
static int runTCLprog(lua_State *L)
{
const char *cmd = luaL_checkstring(L,1);
const char *args = luaL_checkstring(L,2);
char boundary;
const char *left;
Tcl_Obj *argvPtr;
const char* p = args;
size_t len, a;
int argc = 0;
int status = 1;
if (interp == NULL)
{
Tcl_FindExecutable(cmd);
interp = Tcl_CreateInterp();
}
if (interp == NULL) {
fprintf(stderr,"Cannot create TCL interpreter\n");
exit(-1);
}
if (Tcl_AppInit(interp) != TCL_OK)
return TCL_ERROR;
Tcl_SetVar2Ex(interp, "argv0", NULL, Tcl_NewStringObj(cmd,-1), TCL_GLOBAL_ONLY);
resultStr = NULL;
argvPtr = Tcl_NewListObj(0, NULL);
/* By convention all tcl programs that use this interface use the "-F"
* to signify that the script is using the fast option
*/
Tcl_ListObjAppendElement(NULL, argvPtr, Tcl_NewStringObj("-F",-1));
argc++;
while (*p)
{
/* Skip leading spaces to get to the first argument */
a = strspn(p," \t");
p += a;
left = p;
if (*left == '\'' || *left == '"')
{
boundary = *left;
left++;
}
else
boundary = '\0';
if (boundary)
{
p = left;
while (1)
{
p = strchr(p,boundary);
if (p == NULL)
{
len = strlen(left);
break;
}
else if (p[-1] == '\\')
{
p++;
continue;
}
len = p - left;
break;
}
p++;
}
else
{
len = strcspn(left," \t");
p += len;
}
argc++;
Tcl_ListObjAppendElement(NULL, argvPtr, Tcl_NewStringObj(left, len));
}
Tcl_SetVar2Ex(interp, "argc", NULL, Tcl_NewIntObj(argc), TCL_GLOBAL_ONLY);
Tcl_SetVar2Ex(interp, "argv", NULL, argvPtr, TCL_GLOBAL_ONLY);
status = Tcl_EvalFile(interp, cmd) == TCL_OK;
Tcl_DeleteInterp(interp);
interp = NULL;
lua_pushstring(L, resultStr);
(resultStr) ? lua_pushboolean(L, status): lua_pushboolean(L, 0);
return 2;
}
int luaopen_tcl2lua(lua_State *L)
{
lua_newtable(L);
lua_pushcfunction(L, runTCLprog);
lua_setfield(L, -2, "runTCLprog");
return 1;
}
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