From: Adam Dickmeiss <adam@indexdata.dk>
Date: Wed, 8 Mar 1995 07:28:29 +0000 (+0000)
Subject: Initrequests implemented with callback support.
X-Git-Tag: IRTCL.1.4~344
X-Git-Url: http://git.indexdata.com/?p=ir-tcl-moved-to-github.git;a=commitdiff_plain;h=b018d91ad37afe044cfb7a32874ea54bf4c4b7f2

Initrequests implemented with callback support.
---

diff --git a/ir-tcl.c b/ir-tcl.c
index a9ee487..85577da 100644
--- a/ir-tcl.c
+++ b/ir-tcl.c
@@ -2,12 +2,13 @@
  * IR toolkit for tcl/tk
  * (c) Index Data 1995
  *
- * $Id: ir-tcl.c,v 1.1 1995-03-06 17:05:34 adam Exp $
+ * $Id: ir-tcl.c,v 1.2 1995-03-08 07:28:29 adam Exp $
  */
 
 #include <stdlib.h>
 #include <stdio.h>
 #include <sys/time.h>
+#include <assert.h>
 
 #include <comstack.h>
 #include <tcpip.h>
@@ -22,78 +23,414 @@
 
 typedef struct {
     COMSTACK cs_link;
+
+    int preferredMessageSize;
+    int maximumMessageSize;
+    Odr_bitmask options;
+    Odr_bitmask protocolVersion;
+    char *idAuthentication;
+    char *implementationName;
+    char *implementationId;
+
+    char *buf_out;
+    int  len_out;
+
+    char *buf_in;
+    int  len_in;
+
+    ODR odr_in;
+    ODR odr_out;
+    ODR odr_pr;
+
+    Tcl_Interp *interp;
+    char *callback;
 } IRObj;
 
-/* 
- * Object method
+typedef struct {
+    IRObj *parent;
+} IRSetObj;
+
+typedef struct {
+    char *name;
+    int (*method) (void * obj, Tcl_Interp *interp, int argc, char **argv);
+} IRMethod;
+
+static int do_disconnect (void *obj,Tcl_Interp *interp, int argc, char **argv);
+
+/*
+ * get_parent_info: Returns information about parent object.
  */
-static int ir_obj_handle (ClientData clientData, Tcl_Interp *interp,
-                      int argc, char **argv)
+static int get_parent_info (Tcl_Interp *interp, const char *name,
+			    Tcl_CmdInfo *parent_info)
 {
-    IRObj *ir = clientData;
-    if (argc < 2)
+    char parent_name[128];
+    const char *csep = strrchr (name, '.');
+    int pos;
+
+    if (!csep)
     {
-        interp->result = "wrong # args";
+        interp->result = "missing .";
         return TCL_ERROR;
     }
-    if (!strcmp (argv[1], "comstack"))
+    pos = csep-name;
+    if (pos > 127)
+        pos = 127;
+    memcpy (parent_name, name, pos);
+    parent_name[pos] = '\0';
+    if (!Tcl_GetCommandInfo (interp, parent_name, parent_info))
+        return TCL_ERROR;
+    return TCL_OK;
+}
+
+/*
+ * ir_method: Search for method in table and invoke method handler
+ */
+int ir_method (void *obj, Tcl_Interp *interp, int argc, char **argv,
+                   IRMethod *tab)
+{
+    while (tab->name)
     {
-        if (argc == 3)
-        {
-            if (!strcmp (argv[2], "tcpip"))
-                ir->cs_link = cs_create (tcpip_type);
-            else if (!strcmp (argv[2], "mosi"))
-                ir->cs_link = cs_create (mosi_type);
-            else
-            {
-                interp->result = "wrong comstack type";
-                return TCL_ERROR;
-            }
-        }
-        if (cs_type(ir->cs_link) == tcpip_type)
-            interp->result = "tcpip";
-        else if (cs_type(ir->cs_link) == mosi_type)
-            interp->result = "comstack";
+        if (!strcmp (tab->name, argv[1]))
+            return (*tab->method)(obj, interp, argc, argv);
+        tab++;
     }
-    else if (!strcmp (argv[1], "connect"))
+    Tcl_AppendResult (interp, "unknown method: ", argv[1], NULL);
+    return TCL_ERROR;
+}
+
+/*
+ * ir_asc2bitmask: Ascii to ODR bitmask conversion
+ */
+int ir_asc2bitmask (const char *asc, Odr_bitmask *ob)
+{
+    const char *cp = asc + strlen(asc);
+    int bitno = 0;
+
+    ODR_MASK_ZERO (ob);
+    do 
     {
-        void *addr;
+        if (*--cp == '1')
+            ODR_MASK_SET (ob, bitno);
+        bitno++;
+    } while (cp != asc);
+    return bitno;
+}
 
-        if (argc < 3)
-        {
-            interp->result = "missing hostname after connect";
+/*
+ * ir_strdup: Duplicate string
+ */
+int ir_strdup (Tcl_Interp *interp, char** p, char *s)
+{
+    *p = malloc (strlen(s)+1);
+    if (!*p)
+    {
+        interp->result = "malloc fail";
+        return TCL_ERROR;
+    }
+    strcpy (*p, s);
+    return TCL_OK;
+}
+
+/* ------------------------------------------------------- */
+
+/*
+ * do_init_request: init method on IR object
+ */
+static int do_init_request (void *obj, Tcl_Interp *interp,
+		       int argc, char **argv)
+{
+    Z_APDU apdu, *apdup;
+    IRObj *p = obj;
+    Z_InitRequest req;
+    char *sbuf;
+    int slen;
+
+    req.referenceId = 0;
+    req.options = &p->options;
+    req.protocolVersion = &p->protocolVersion;
+    req.preferredMessageSize = &p->preferredMessageSize;
+    req.maximumRecordSize = &p->maximumMessageSize;
+
+    req.idAuthentication = p->idAuthentication;
+    req.implementationId = p->implementationId;
+    req.implementationName = p->implementationName;
+    req.implementationVersion = "0.1";
+    req.userInformationField = 0;
+
+    apdu.u.initRequest = &req;
+    apdu.which = Z_APDU_initRequest;
+    apdup = &apdu;
+
+    if (!z_APDU (p->odr_out, &apdup, 0))
+    {
+        interp->result = odr_errlist [odr_geterror (p->odr_out)];
+        odr_reset (p->odr_out);
+        return TCL_ERROR;
+    }
+    sbuf = odr_getbuf (p->odr_out, &slen);
+    if (cs_put (p->cs_link, sbuf, slen) < 0)
+    {
+        interp->result = "cs_put failed in init";
+        return TCL_ERROR;
+    }
+    printf("Sent initializeRequest (%d bytes).\n", slen);
+    return TCL_OK;
+}
+
+/*
+ * do_protocolVersion: Set protocol Version
+ */
+static int do_protocolVersion (void *obj, Tcl_Interp *interp,
+                               int argc, char **argv)
+{
+    if (argc == 3)
+        ir_asc2bitmask (argv[2], &((IRObj *) obj)->protocolVersion);
+    return TCL_OK;
+}
+
+/*
+ * do_options: Set options
+ */
+static int do_options (void *obj, Tcl_Interp *interp,
+                       int argc, char **argv)
+{
+    if (argc == 3)
+        ir_asc2bitmask (argv[2], &((IRObj *) obj)->options);
+    return TCL_OK;
+}
+
+/*
+ * do_preferredMessageSize: Set preferred message size
+ */
+static int do_preferredMessageSize (void *obj, Tcl_Interp *interp,
+                                    int argc, char **argv)
+{
+    if (argc == 3)
+    {
+        if (Tcl_GetInt (interp, argv[2], 
+                        &((IRObj *)obj)->preferredMessageSize)==TCL_ERROR)
             return TCL_ERROR;
-        }
-        if (cs_type(ir->cs_link) == tcpip_type)
+    }
+    sprintf (interp->result, "%d", ((IRObj *)obj)->preferredMessageSize);
+    return TCL_OK;
+}
+
+/*
+ * do_maximumMessageSize: Set maximum message size
+ */
+static int do_maximumMessageSize (void *obj, Tcl_Interp *interp,
+                                    int argc, char **argv)
+{
+    if (argc == 3)
+    {
+        if (Tcl_GetInt (interp, argv[2], 
+                        &((IRObj *)obj)->maximumMessageSize)==TCL_ERROR)
+            return TCL_ERROR;
+    }
+    sprintf (interp->result, "%d", ((IRObj *)obj)->maximumMessageSize);
+    return TCL_OK;
+}
+
+
+/*
+ * do_implementationName: Set Implementation Name.
+ */
+static int do_implementationName (void *obj, Tcl_Interp *interp,
+                                    int argc, char **argv)
+{
+    if (argc == 3)
+    {
+        free (((IRObj*)obj)->implementationName);
+        if (ir_strdup (interp, &((IRObj*) obj)->implementationName, argv[2])
+            == TCL_ERROR)
+            return TCL_ERROR;
+    }
+    Tcl_AppendResult (interp, ((IRObj*)obj)->implementationName,
+                      (char*) NULL);
+    return TCL_OK;
+}
+
+/*
+ * do_implementationId: Set Implementation Name.
+ */
+static int do_implementationId (void *obj, Tcl_Interp *interp,
+                                int argc, char **argv)
+{
+    if (argc == 3)
+    {
+        free (((IRObj*)obj)->implementationId);
+        if (ir_strdup (interp, &((IRObj*) obj)->implementationId, argv[2])
+            == TCL_ERROR)
+            return TCL_ERROR;
+    }
+    Tcl_AppendResult (interp, ((IRObj*)obj)->implementationId,
+                      (char*) NULL);
+    return TCL_OK;
+}
+
+/*
+ * do_idAuthentication: Set id Authentication
+ */
+static int do_idAuthentication (void *obj, Tcl_Interp *interp,
+                                int argc, char **argv)
+{
+    if (argc == 3)
+    {
+        free (((IRObj*)obj)->idAuthentication);
+        if (ir_strdup (interp, &((IRObj*) obj)->idAuthentication, argv[2])
+            == TCL_ERROR)
+            return TCL_ERROR;
+    }
+    Tcl_AppendResult (interp, ((IRObj*)obj)->idAuthentication,
+                      (char*) NULL);
+    return TCL_OK;
+}
+
+/*
+ * do_connect: connect method on IR object
+ */
+static int do_connect (void *obj, Tcl_Interp *interp,
+		       int argc, char **argv)
+{
+    void *addr;
+    IRObj *p = obj;
+
+    if (argc < 3)
+    {
+        interp->result = "missing hostname";
+        return TCL_ERROR;
+    }
+    if (cs_type(p->cs_link) == tcpip_type)
+    {
+        addr = tcpip_strtoaddr (argv[2]);
+        if (!addr)
         {
-            addr = tcpip_strtoaddr (argv[2]);
-            if (!addr)
-            {
-                interp->result = "tcpip_strtoaddr fail";
-                return TCL_ERROR;
-            }
+            interp->result = "tcpip_strtoaddr fail";
+            return TCL_ERROR;
         }
-        else if (cs_type (ir->cs_link) == mosi_type)
+        printf ("tcp/ip connect %s\n", argv[2]);
+    }
+    else if (cs_type (p->cs_link) == mosi_type)
+    {
+        addr = mosi_strtoaddr (argv[2]);
+        if (!addr)
         {
-            addr = mosi_strtoaddr (argv[2]);
-            if (!addr)
-            {
-                interp->result = "mosi_strtoaddr fail";
-                return TCL_ERROR;
-            }
+            interp->result = "mosi_strtoaddr fail";
+            return TCL_ERROR;
         }
-        if (cs_connect (ir->cs_link, addr) < 0)
+        printf ("mosi connect %s\n", argv[2]);
+    }
+    if (cs_connect (p->cs_link, addr) < 0)
+    {
+        interp->result = "cs_connect fail";
+        do_disconnect (p, interp, argc, argv);
+        return TCL_ERROR;
+    }
+    ir_select_add (cs_fileno (p->cs_link), p);
+    return TCL_OK;
+}
+
+/*
+ * do_disconnect: disconnect method on IR object
+ */
+static int do_disconnect (void *obj, Tcl_Interp *interp,
+                          int argc, char **argv)
+{
+    IRObj *p = obj;
+
+    ir_select_remove (cs_fileno (p->cs_link), p);
+    if (cs_type (p->cs_link) == tcpip_type)
+    {
+        cs_close (p->cs_link);
+        p->cs_link = cs_create (tcpip_type);
+    }
+    else if (cs_type (p->cs_link) == mosi_type)
+    {
+        cs_close (p->cs_link);
+        p->cs_link = cs_create (mosi_type);
+    }
+    else
+    {
+        interp->result = "unknown comstack type";
+        return TCL_ERROR;
+    }
+    return TCL_OK;
+}
+
+/*
+ * do_comstack: comstack method on IR object
+ */
+static int do_comstack (void *obj, Tcl_Interp *interp,
+		        int argc, char **argv)
+{
+    if (argc == 3)
+    {
+        if (!strcmp (argv[2], "tcpip"))
+            ((IRObj *)obj)->cs_link = cs_create (tcpip_type);
+        else if (!strcmp (argv[2], "mosi"))
+            ((IRObj *)obj)->cs_link = cs_create (mosi_type);
+        else
         {
-            interp->result = "cs_connect fail";
-            cs_close (ir->cs_link);
+            interp->result = "wrong comstack type";
             return TCL_ERROR;
         }
     }
+    if (cs_type(((IRObj *)obj)->cs_link) == tcpip_type)
+        interp->result = "tcpip";
+    else if (cs_type(((IRObj *)obj)->cs_link) == mosi_type)
+        interp->result = "comstack";
     return TCL_OK;
 }
 
+/*
+ * do_callback: add callback
+ */
+static int do_callback (void *obj, Tcl_Interp *interp,
+                          int argc, char **argv)
+{
+    IRObj *p = obj;
+
+    if (argc == 3)
+    {
+        free (p->callback);
+        if (ir_strdup (interp, &p->callback, argv[2]) == TCL_ERROR)
+            return TCL_ERROR;
+        p->interp = interp;
+    }
+    return TCL_OK;
+}
+
+/* 
+ * ir_obj_method: IR Object methods
+ */
+static int ir_obj_method (ClientData clientData, Tcl_Interp *interp,
+                          int argc, char **argv)
+{
+    static IRMethod tab[] = {
+    { "comstack", do_comstack },
+    { "connect", do_connect },
+    { "protocolVersion", do_protocolVersion },
+    { "options", do_options },
+    { "preferredMessageSize", do_preferredMessageSize },
+    { "maximumMessageSize",   do_maximumMessageSize },
+    { "implementationName", do_implementationName },
+    { "implementationId",   do_implementationId },
+    { "idAuthentication",   do_idAuthentication },
+    { "init", do_init_request },
+    { "disconnect", do_disconnect },
+    { "callback", do_callback },
+    { NULL, NULL}
+    };
+    if (argc < 2)
+    {
+        interp->result = "wrong # args";
+        return TCL_ERROR;
+    }
+    return ir_method (clientData, interp, argc, argv, tab);
+}
+
 /* 
- * Object disposal
+ * ir_obj_delete: IR Object disposal
  */
 static void ir_obj_delete (ClientData clientData)
 {
@@ -101,7 +438,7 @@ static void ir_obj_delete (ClientData clientData)
 }
 
 /* 
- * Object create
+ * ir_obj_mk: IR Object creation
  */
 static int ir_obj_mk (ClientData clientData, Tcl_Interp *interp,
               int argc, char **argv)
@@ -115,20 +452,225 @@ static int ir_obj_mk (ClientData clientData, Tcl_Interp *interp,
     }
     obj = malloc (sizeof(*obj));
     if (!obj)
+    {
+        interp->result = "malloc fail";
         return TCL_ERROR;
+    }
     obj->cs_link = cs_create (tcpip_type);
 
-    Tcl_CreateCommand (interp, argv[1], ir_obj_handle,
+    obj->maximumMessageSize = 10000;
+    obj->preferredMessageSize = 4096;
+
+    obj->idAuthentication = NULL;
+
+    if (ir_strdup (interp, &obj->implementationName, "TCL/TK on YAZ")
+        == TCL_ERROR)
+        return TCL_ERROR;
+
+    if (ir_strdup (interp, &obj->implementationId, "TCL/TK/YAZ")
+        == TCL_ERROR)
+        return TCL_ERROR;
+
+    ODR_MASK_ZERO (&obj->protocolVersion);
+    ODR_MASK_SET (&obj->protocolVersion, 0);
+    ODR_MASK_SET (&obj->protocolVersion, 1);
+
+    ODR_MASK_ZERO (&obj->options);
+    ODR_MASK_SET (&obj->options, 0);
+
+    obj->odr_in = odr_createmem (ODR_DECODE);
+    obj->odr_out = odr_createmem (ODR_ENCODE);
+    obj->odr_pr = odr_createmem (ODR_PRINT);
+
+    obj->len_out = 10000;
+    obj->buf_out = malloc (obj->len_out);
+    if (!obj->buf_out)
+    {
+        interp->result = "malloc fail";
+        return TCL_ERROR;
+    }
+    odr_setbuf (obj->odr_out, obj->buf_out, obj->len_out);
+
+    obj->len_in = 0;
+    obj->buf_in = NULL;
+
+    obj->callback = NULL;
+
+    Tcl_CreateCommand (interp, argv[1], ir_obj_method,
                        (ClientData) obj, ir_obj_delete);
     return TCL_OK;
 }
 
+/* ------------------------------------------------------- */
 /*
- * Registration
+ * do_query: Set query for a Set Object
+ */
+static int do_query (void *obj, Tcl_Interp *interp,
+		       int argc, char **argv)
+{
+    return TCL_OK;
+}
+
+
+/* 
+ * ir_set_obj_method: IR Set Object methods
+ */
+static int ir_set_obj_method (ClientData clientData, Tcl_Interp *interp,
+                          int argc, char **argv)
+{
+    static IRMethod tab[] = {
+    { "query", do_query },
+    { NULL, NULL}
+    };
+
+    if (argc < 2)
+    {
+        interp->result = "wrong # args";
+        return TCL_ERROR;
+    }
+    return ir_method (clientData, interp, argc, argv, tab);
+}
+
+/* 
+ * ir_set_obj_delete: IR Set Object disposal
+ */
+static void ir_set_obj_delete (ClientData clientData)
+{
+    free ( (void*) clientData);
+}
+
+/* 
+ * ir_set_obj_mk: IR Set Object creation
+ */
+static int ir_set_obj_mk (ClientData clientData, Tcl_Interp *interp,
+			     int argc, char **argv)
+{
+    Tcl_CmdInfo parent_info;
+    IRSetObj *obj;
+
+    if (argc != 2)
+    {
+        interp->result = "wrong # args";
+        return TCL_ERROR;
+    }
+    if (get_parent_info (interp, argv[1], &parent_info) == TCL_ERROR)
+    {
+        interp->result = "No parent";
+        return TCL_ERROR;
+    }
+    obj = malloc (sizeof(*obj));
+    if (!obj)
+    {
+        interp->result = "malloc fail";
+        return TCL_ERROR;
+    }
+    obj->parent = (IRObj *) parent_info.clientData;
+    Tcl_CreateCommand (interp, argv[1], ir_set_obj_method,
+                       (ClientData) obj, ir_set_obj_delete);
+    return TCL_OK;
+}
+
+/* ------------------------------------------------------- */
+
+static void ir_searchResponse (void *obj, Z_SearchResponse *searchrs)
+{    
+    if (searchrs->searchStatus)
+        printf("Search was a success.\n");
+    else
+            printf("Search was a bloomin' failure.\n");
+    printf("Number of hits: %d, setno %d\n",
+           *searchrs->resultCount, 1);
+#if 0
+    if (searchrs->records)
+        display_records(searchrs->records);
+#endif
+}
+
+static void ir_initResponse (void *obj, Z_InitResponse *initrs)
+{
+    if (!*initrs->result)
+        printf("Connection rejected by target.\n");
+    else
+        printf("Connection accepted by target.\n");
+    if (initrs->implementationId)
+            printf("ID     : %s\n", initrs->implementationId);
+    if (initrs->implementationName)
+        printf("Name   : %s\n", initrs->implementationName);
+    if (initrs->implementationVersion)
+        printf("Version: %s\n", initrs->implementationVersion);
+#if 0
+    if (initrs->userInformationField)
+    {
+        printf("UserInformationfield:\n");
+        odr_external(&print, (Odr_external**)&initrs->
+                         userInformationField, 0);
+    }
+#endif
+}
+
+static void ir_presentResponse (void *obj, Z_PresentResponse *presrs)
+{
+    printf("Received presentResponse.\n");
+    if (presrs->records)
+        printf ("Got records\n");
+    else
+        printf("No records\n");
+}
+
+void ir_select_proc (ClientData clientData)
+{
+    IRObj *p = clientData;
+    Z_APDU *apdu;
+    int r;
+    
+    do
+    {
+        if ((r=cs_get (p->cs_link, &p->buf_in, &p->len_in))  < 0)
+        {
+            printf ("cs_get failed\n");
+            return;
+        }        
+        odr_setbuf (p->odr_in, p->buf_in, r);
+        printf ("cs_get ok, got %d\n", r);
+        if (!z_APDU (p->odr_in, &apdu, 0))
+        {
+            printf ("%s\n", odr_errlist [odr_geterror (p->odr_in)]);
+            return;
+        }
+        if (p->callback)
+        {
+	    Tcl_Eval (p->interp, p->callback);
+	}
+        switch(apdu->which)
+        {
+        case Z_APDU_initResponse:
+            ir_initResponse (NULL, apdu->u.initResponse);
+            break;
+        case Z_APDU_searchResponse:
+            ir_searchResponse (NULL, apdu->u.searchResponse);
+            break;
+        case Z_APDU_presentResponse:
+            ir_presentResponse (NULL, apdu->u.presentResponse);
+            break;
+        default:
+            printf("Received unknown APDU type (%d).\n", 
+                   apdu->which);
+        }
+    } while (cs_more (p->cs_link));    
+}
+
+/* ------------------------------------------------------- */
+
+/*
+ * ir_tcl_init: Registration of TCL commands.
  */
 int ir_tcl_init (Tcl_Interp *interp)
 {
     Tcl_CreateCommand (interp, "ir", ir_obj_mk, (ClientData) NULL,
                        (Tcl_CmdDeleteProc *) NULL);
+    Tcl_CreateCommand (interp, "ir-set", ir_set_obj_mk,
+    		       (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
     return TCL_OK;
 }
+
+
diff --git a/ir-tcl.h b/ir-tcl.h
index 44708d4..62d1976 100644
--- a/ir-tcl.h
+++ b/ir-tcl.h
@@ -1,2 +1,6 @@
 
 int ir_tcl_init (Tcl_Interp *interp);
+
+void ir_select_add      (int fd, void *obj);
+void ir_select_remove   (int fd, void *obj);
+void ir_select_proc     (ClientData clientData);
diff --git a/tclmain.c b/tclmain.c
index 203d8aa..70d0db1 100644
--- a/tclmain.c
+++ b/tclmain.c
@@ -2,15 +2,24 @@
  * IR toolkit for tcl/tk
  * (c) Index Data 1995
  *
- * $Id: tclmain.c,v 1.1 1995-03-06 17:05:34 adam Exp $
+ * $Id: tclmain.c,v 1.2 1995-03-08 07:28:37 adam Exp $
  */
 
+#include <sys/time.h>
+#include <sys/types.h>
+#include <assert.h>
+#include <unistd.h>
+
 #include <tcl.h>
 
 #include "ir-tcl.h"
 
 static char *fileName = NULL;
 
+static fd_set fdset_tcl;
+
+void tcl_mainloop (Tcl_Interp *interp);
+
 int Tcl_AppInit (Tcl_Interp *interp)
 {
     if (Tcl_Init(interp) == TCL_ERROR)
@@ -40,12 +49,81 @@ int main (int argc, char **argv)
     }
     if (Tcl_AppInit(interp) != TCL_OK) {
         fprintf(stderr, "Tcl_AppInit failed: %s\n", interp->result);
-    }    
+    }
     code = Tcl_EvalFile (interp, fileName);
     if (*interp->result != 0)
         printf ("%s\n", interp->result);
     if (code != TCL_OK)
         exit (1);
+    tcl_mainloop (interp);
     exit (0);
 }
 
+struct callback {
+    void (*handle)(void *p);
+    void *obj;
+};
+
+#define MAX_CALLBACK 20
+
+struct callback callback_table[MAX_CALLBACK];
+
+void tcl_mainloop (Tcl_Interp *interp)
+{
+    int i;
+    int res;
+    int count;
+    char input_buf[256];
+    Tcl_DString command;
+
+    for (i=0; i<MAX_CALLBACK; i++)
+        callback_table[i].handle = NULL;
+    Tcl_DStringInit (&command);
+    printf ("[TCL]"); fflush (stdout);
+    while (1)
+    {
+        FD_ZERO (&fdset_tcl);
+        FD_SET (0, &fdset_tcl);
+        for (i=3; i<MAX_CALLBACK; i++)
+            if (callback_table[i].handle)
+                FD_SET (i, &fdset_tcl);
+        if ((res = select(MAX_CALLBACK+1, &fdset_tcl, 0, 0, 0)) < 0)
+        {
+            perror("select");
+            exit(1);
+        }
+        if (!res)
+            continue;
+        for (i=3; i<MAX_CALLBACK; i++)
+            if (FD_ISSET (i, &fdset_tcl))
+            {
+                assert (callback_table[i].handle);
+                (*callback_table[i].handle) (callback_table[i].obj);
+            }
+        if (FD_ISSET(0, &fdset_tcl))
+        {
+            count = read (0, input_buf, 256);
+            if (count <= 0)
+                exit (0);
+            Tcl_DStringAppend (&command, input_buf, count);
+            if (Tcl_CommandComplete (Tcl_DStringValue (&command)))
+            {
+                int code = Tcl_Eval (interp, Tcl_DStringValue (&command));
+                Tcl_DStringFree (&command);
+                printf ("[RES:%s]\n", interp->result);
+                printf ("[TCL]"); fflush (stdout);
+            }
+        }
+    }
+}
+
+void ir_select_add (int fd, void *obj)
+{
+    callback_table[fd].obj = obj;
+    callback_table[fd].handle = ir_select_proc;
+}
+
+void ir_select_remove (int fd, void *obj)
+{
+    callback_table[fd].handle = NULL;
+}