Package manager for maanging the data files

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@10 0fc631ac-6414-0410-93d0-97cfa31319b6

src/util/io/package_manager.cpp

@@ -0,0 +1,37 @@
+//+----------------------------------------------------------------------------+
+//| Description:  Magic Set Editor - Program to make Magic (tm) cards          |
+//| Copyright:    (C) 2001 - 2006 Twan van Laarhoven                           |
+//| License:      GNU General Public License 2 or later (see file COPYING)     |
+//+----------------------------------------------------------------------------+
+
+// ----------------------------------------------------------------------------- : Includes
+
+#include <util/io/package_manager.hpp>
+#include <util/error.hpp>
+
+// ----------------------------------------------------------------------------- : PackageManager
+
+String programDir() {
+	return _("."); //TODO
+}
+
+PackageManager packages;
+
+
+PackageManager::PackageManager() {
+	// determine data directory
+	dataDirectory = programDir();
+	// check if this is the actual data directory, especially during debugging,
+	// the data may be higher up:
+	//  exe path  = mse/build/debug/mse.exe
+	//  data path = mse/data
+	while (!wxDirExists(dataDirectory + _("/data"))) {
+		String d = dataDirectory;
+		dataDirectory = wxPathOnly(dataDirectory);
+		if (d == dataDirectory) {
+			// we are at the root -> 'data' not found anywhere in the path -> fatal error
+			throw Error(_("The MSE data files can not be found, there should be a directory called 'data' with these files"));
+		}
+	}
+	dataDirectory += _("/data");
+}