diff -r 000000000000 -r bd98be838da9 version.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/version.cpp	Mon Mar 16 15:40:49 2009 +0000
@@ -0,0 +1,57 @@
+#include "version.h"
+
+#include <QRegExp>
+
+bool checkVersion (const QString &v)
+{
+	// returns true, if vym is able to read file regarding 
+	// the version set with setVersion
+	return checkVersion (v,__VYM_VERSION);
+}
+
+
+bool checkVersion (const QString &v, const QString &d)
+{
+	bool ok;
+	int v1;
+	int v2;
+	int v3;
+	int d1;
+	int d2;
+	int d3;
+
+	QRegExp rx("(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})");
+	int pos=rx.indexIn (v);
+	if (pos>-1)
+	{
+		v1=rx.cap(1).toInt(&ok);
+		v2=rx.cap(2).toInt(&ok);
+		v3=rx.cap(3).toInt(&ok);
+	} else
+		qWarning (QString ("Warning: Checking version failed for v=%1").arg(v));
+
+	pos=rx.indexIn (d);
+	if (pos>-1)
+	{
+		d1=rx.cap(1).toInt(&ok);
+		d2=rx.cap(2).toInt(&ok);
+		d3=rx.cap(3).toInt(&ok);
+	} else
+		qWarning (QString ("Warning: Checking version failed for d=%1").arg(d));
+
+	
+	if (d1 > v1)
+		return true;
+	if (d1 < v1)
+		return false;
+	if (d2 > v2)
+		return true;
+	if (d2 < v2)
+		return false;
+	if (d3 > v3)
+		return true;
+	if (d3 < v3)
+		return false;
+	return true;	
+
+}