1 files changed, 155 insertions, 0 deletions
diff --git a/examples/irdemo.cpp b/examples/irdemo.cpp
new file mode 100644
index 0000000..aedd832
--- /dev/null
+++ b/examples/irdemo.cpp
@@ -0,0 +1,155 @@
+    /*
+
+    Copyright (C) 1999 Stefan Westerfeld
+                       stefan@space.twc.de
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+    Permission is also granted to link this program with the Qt
+    library, treating Qt like a library that normally accompanies the
+    operating system kernel, whether or not that is in fact the case.
+
+    */
+
+#include "common.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <vector>
+#include <string>
+
+using namespace std;
+using namespace Arts;
+
+static void printInterface(InterfaceDef id)
+{
+	string inherit;
+	if(id.inheritedInterfaces.size())
+	{
+		vector<string>::iterator ii;
+		bool first = true;
+		inherit = ": ";
+		for(ii = id.inheritedInterfaces.begin(); ii != id.inheritedInterfaces.end(); ii++)
+		{
+			if(!first) inherit +=",";
+			first = false;
+			inherit += (*ii)+" ";
+		}
+	}
+	printf("interface %s %s{\n",id.name.c_str(),inherit.c_str());
+	// attributes, streams
+	vector<AttributeDef>::iterator ai;
+	for(ai = id.attributes.begin(); ai != id.attributes.end(); ai++)
+	{
+		const AttributeDef& ad = *ai;
+		if(ad.flags & attributeAttribute)
+		{
+			/* readwrite */
+			if(ad.flags & (streamOut|streamIn) == (streamOut|streamIn))
+			{
+				printf("  attribute %s %s;\n",ad.type.c_str(), ad.name.c_str());
+			}
+			else
+			{
+				if(ad.flags & streamOut)  /* readable from outside */
+				{
+					printf("  readonly attribute %s %s;\n",
+									ad.type.c_str(), ad.name.c_str());
+				}
+				if(ad.flags & streamIn)  /* writeable from outside */
+				{
+					printf("  ?writeonly? attribute %s %s;\n",
+									ad.type.c_str(), ad.name.c_str());
+				}
+			}
+		}
+		if(ad.flags & attributeStream)
+		{
+			const char *dir = (ad.flags & streamOut)?"out":"in";
+			const char *async = (ad.flags & streamAsync)?"async ":"";
+			string type = ad.type;
+			if(type == "float" && !(ad.flags & streamAsync)) type = "audio";
+
+			printf("  %s%s %s stream %s;\n",async,dir,
+									type.c_str(),ad.name.c_str());
+		}
+	}
+
+	// methods
+	vector<MethodDef>::iterator mi;
+	for(mi = id.methods.begin();mi != id.methods.end(); mi++)
+	{
+		MethodDef& md = *mi;
+		printf("  %s %s(",md.type.c_str(),md.name.c_str());
+
+		bool first = true;
+		vector<ParamDef>::iterator pi;
+		for(pi = md.signature.begin(); pi != md.signature.end(); pi++)
+		{
+			ParamDef& pd = *pi;
+			if(!first) printf(", ");
+			printf("%s %s",pd.type.c_str(),pd.name.c_str());
+			first = false;
+		}
+		printf(");\n");
+	}
+	printf("}\n");
+}
+
+/*
+ * This demo shows that you can find out what interface an object has and
+ * what types it needs to work without knowing anything but the object
+ * reference.
+ *
+ * The reason for that is that every object offers the _interfaceName
+ * _queryInterface and _queryType methods, which you can use to find out
+ * anything you need to know to talk to that object.
+ *
+ * Just pass this programm an MCOP object reference, and it will print out
+ * the corresponding interface.
+ *
+ * (TODO: one could make it print out all inherited interfaces and the
+ * types that are used in the interface, too. Ports, etc could be shown
+ * as well).
+ */
+
+/**
+ * Interface repository demo - reasonable testcase:
+ *
+ *  - make sure artsd is running
+ *  - irdemo global:Arts_SimpleSoundServer
+ */
+int main(int argc, char **argv)
+{
+	if(argc != 2)
+	{
+		fprintf(stderr,"usage: %s <mcop reference>\n",argv[0]);
+		exit(1);
+	}
+
+	Dispatcher dispatcher;
+	Object o = Reference(argv[1]);
+	if(o.isNull())
+	{
+		fprintf(stderr,"can't connect to the object\n");
+		exit(1);
+	}
+
+	string iname = o._interfaceName();
+	InterfaceDef idef = o._queryInterface(iname);
+	printInterface(idef);
+
+	return 0;
+}