1 files changed, 253 insertions, 0 deletions
diff --git a/vendor/x11iraf/obm/client.c b/vendor/x11iraf/obm/client.c
new file mode 100644
index 00000000..32277572
--- /dev/null
+++ b/vendor/x11iraf/obm/client.c
@@ -0,0 +1,253 @@
+/* Copyright(c) 1993 Association of Universities for Research in Astronomy Inc.
+ */
+
+#include <ObmP.h>
+
+
+/*
+ * CLIENT class.
+ * --------------------------
+ * The client is the client application, which provides the functionality
+ * underlying the UI.  When a message is sent to the client object it usually
+ * results in a message being sent to the client *application*, usually an
+ * external program communicating via IPC, which has little or no knowledge
+ * of the UI.  The client application receives and executes commands delivered
+ * by the UI via the client object.  Output from the client may or may not
+ * come back to the object manager.  That portion of the output which comes
+ * back to the object manager is in the form of assignments of string values
+ * to UI parameter-class objects (another way of thinking of this is that
+ * messages or events are sent to and acted upon by the parameter objects).
+ * Hence, the client object is output only so far as the client application
+ * is concerned.
+ *
+ * The Client-class commands are used to send a message to the client.
+ *
+ *                 gkey <key>
+ *                 gcmd <command-string>
+ *              literal <command>
+ *
+ * or just <command>, e.g., "send client <command>" will work in most cases.
+ *
+ * GKEY sends and IRAF graphics keystroke.  GCMD sends and IRAF graphics
+ * colon command.  LITERAL sends a literal command string to the client.
+ * The keyword "literal" may optionally be omitted, i.e., "send client foo"
+ * and "send client literal foo" are the same.  The keyword "literal" may
+ * be used to ensure that the client command string which follows will not
+ * be interpreted as a Client-class command (such as gkey, gcmd, or literal).
+ */
+
+struct clientPrivate {
+	ObmContext obm;
+	Tcl_Interp *tcl;
+};
+
+typedef	struct clientPrivate *ClientPrivate;
+
+struct clientObject  {
+	struct obmObjectCore core;
+	struct clientPrivate client;
+};
+
+typedef	struct clientObject *ClientObject;
+
+static	void ClientDestroy();
+static	int ClientEvaluate();
+static	ObmObject ClientCreate();
+static	int clientGcmd(), clientGkey(), clientLiteral();
+static	int client_output();
+
+
+/* ClientClassInit -- Initialize the class record for the client class.
+ */
+void
+ClientClassInit (obm, classrec)
+ObmContext obm;
+register ObjClassRec classrec;
+{
+	classrec->ClassDestroy = obmGenericClassDestroy;
+	classrec->Create = (ObmFunc) ClientCreate;
+	classrec->Destroy = ClientDestroy;
+	classrec->Evaluate = ClientEvaluate;
+}
+
+
+/* ClientCreate -- Create an instance of a client object.
+ */
+static ObmObject
+ClientCreate (obm, name, classrec, parent, args, nargs)
+ObmContext obm;
+char *name;
+ObjClassRec classrec;
+char *parent;
+ArgList args;
+int nargs;
+{
+	register ClientObject obj;
+	register Tcl_Interp *tcl;
+
+	obj = (ClientObject) XtCalloc (1, sizeof (struct clientObject));
+	obj->client.tcl = tcl = Tcl_CreateInterp();
+	obj->client.obm = obm;
+
+	/* Register client-object actions.  */
+	Tcl_CreateCommand (tcl,
+	    "gcmd", clientGcmd, (ClientData)obj, NULL);
+	Tcl_CreateCommand (tcl,
+	    "gkey", clientGkey, (ClientData)obj, NULL);
+	Tcl_CreateCommand (tcl,
+	    "literal", clientLiteral, (ClientData)obj, NULL);
+
+	return ((ObmObject) obj);
+}
+
+
+/* ClientDestroy -- Destroy an instance of a client object.
+ */
+static void
+ClientDestroy (object)
+ObmObject object;
+{
+	register ClientObject obj = (ClientObject) object;
+
+	if (obj->core.being_destroyed++)
+	    Tcl_DeleteInterp (obj->client.tcl);
+}
+
+
+/* ClientEvaluate -- Evaluate a client command or message.
+ */
+static int
+ClientEvaluate (object, command)
+ObmObject object;
+char *command;
+{
+	register ClientObject obj = (ClientObject) object;
+	register Tcl_Interp *tcl = obj->client.tcl;
+	int status, argc, i;
+	char *argv[MAX_ARGS];
+	char **argvp;
+
+	if (!obmClientCommand (tcl, command))
+	    goto literal;
+
+	/* If the command is unrecognized pass it on to the client as a
+	 * literal to be processed by the client.
+	 */
+	if ((status = Tcl_Eval (tcl, command)) != TCL_OK) {
+literal:    if (Tcl_SplitList (tcl, command, &argc, &argvp) == TCL_OK) {
+		argv[0] = "literal";
+		if (argc > MAX_ARGS)
+		    argc = MAX_ARGS;
+		for (i=0;  i <= argc;  i++)
+		    argv[i+1] = argvp[i];
+
+		status = clientLiteral (object, tcl, argc + 1, argv);
+		free ((char *) argvp);
+	    }
+	}
+
+	return (status);
+}
+
+
+/* clientGcmd -- Send a graphics command string to the client application.
+ * A graphics command string is a graphics cursor value with the key set
+ * to `:' and the command string given as the string part of the cursor
+ * value.  The protocol module which posted the client output procedure is
+ * responsible for encoding and sending the cursor command.
+ *
+ *  Usage:	gcmd <command-string>
+ */
+static int 
+clientGcmd (object, tcl, argc, argv)
+ObmObject object;
+Tcl_Interp *tcl;
+int argc;
+char **argv;
+{
+	register ClientObject obj = (ClientObject) object;
+	register ObmContext obm = obj->client.obm;
+	int stat;
+
+	if (argc >= 2) {
+	    char *message = Tcl_Concat (argc-1, &argv[1]);
+	    stat = client_output (obm, obj->core.name, ':', message);
+	    free ((char *)message);
+	} else
+	    stat = -1;
+
+	return (stat < 0 ? TCL_ERROR : TCL_OK);
+}
+
+
+/* clientGkey -- Send a graphics key event to the client application.
+ * A graphics key event is a graphics cursor value with the key set to some
+ * integer value and a null string part.
+ *
+ *  Usage:	gkey <key>
+ */
+static int 
+clientGkey (object, tcl, argc, argv)
+ObmObject object;
+Tcl_Interp *tcl;
+int argc;
+char **argv;
+{
+	register ClientObject obj = (ClientObject) object;
+	register ObmContext obm = obj->client.obm;
+	int stat;
+
+	if (argc >= 2)
+	    stat = client_output (obm, obj->core.name, *argv[1], "");
+	else
+	    stat = -1;
+
+	return (stat < 0 ? TCL_ERROR : TCL_OK);
+}
+
+
+/* clientLiteral -- Send a literal command to the client application.
+ *
+ *  Usage:	literal <command>
+ */
+static int 
+clientLiteral (object, tcl, argc, argv)
+ObmObject object;
+Tcl_Interp *tcl;
+int argc;
+char **argv;
+{
+	register ClientObject obj = (ClientObject) object;
+	register ObmContext obm = obj->client.obm;
+	int stat;
+
+	if (argc >= 2) {
+	    char *message = Tcl_Concat (argc-1, &argv[1]);
+	    stat = client_output (obm, obj->core.name, 0, message);
+	    free ((char *)message);
+	} else
+	    stat = -1;
+
+	return (stat < 0 ? TCL_ERROR : TCL_OK);
+}
+
+
+/* client_output -- Call the client output callbacks if any.
+ */
+static int
+client_output (obm, objname, key, strval)
+register ObmContext obm;
+char *objname;
+int key;
+char *strval;
+{
+	register ObmCallback cb;
+	register int stat = 0;
+
+	for (cb = obm->callback_list;  cb;  cb = cb->next)
+	    if ((cb->callback_type & OBMCB_clientOutput) && cb->u.fcn)
+		stat |= ((*cb->u.fcn) (cb->client_data, obm->tcl,
+			     objname, key, strval));
+
+	return (stat != 0);
+}