X-Git-Url: https://feistymeow.org/gitweb/?a=blobdiff_plain;f=kona%2Fsrc%2Forg%2Fgffs%2Fversion%2FVersionManager.java;fp=kona%2Fsrc%2Forg%2Fgffs%2Fversion%2FVersionManager.java;h=16d9b50596341cac67ae0b7b7c80c239aca85091;hb=13679382916f379ef7fc0cf02693f0186a905835;hp=0000000000000000000000000000000000000000;hpb=909697fd6009240b5bf2643d54b129b06b733953;p=feisty_meow.git

diff --git a/kona/src/org/gffs/version/VersionManager.java b/kona/src/org/gffs/version/VersionManager.java
new file mode 100644
index 00000000..16d9b505
--- /dev/null
+++ b/kona/src/org/gffs/version/VersionManager.java
@@ -0,0 +1,41 @@
+package org.gffs.version;
+
+import java.io.File;
+import java.io.IOException;
+
+import org.gffs.application.ProgramTools;
+
+public class VersionManager
+{
+	static private final String VERSION_FILENAME = "current.version";
+
+	private Version _currentVersion;
+	private File _versionFile;
+
+	public VersionManager()
+	{
+		_versionFile = new File(ProgramTools.getInstallationDirectory(), VERSION_FILENAME);
+		_currentVersion = null;
+	}
+
+	public Version getCurrentVersion() throws IOException
+	{
+		if (_currentVersion == null) {
+			// we go with the installer scheme to start with, where there's a current.version in the
+			// top-level.
+			if (!_versionFile.exists()) {
+				// try failing over to the source code's version of the file inside the installer
+				// directory.
+				_versionFile = new File(ProgramTools.getInstallationDirectory(), "installer/" + VERSION_FILENAME);
+				if (!_versionFile.exists()) {
+					_currentVersion = Version.EMPTY_VERSION;
+				}
+			}
+			if (_versionFile.exists()) {
+				_currentVersion = new Version(_versionFile);
+			}
+		}
+
+		return _currentVersion;
+	}
+}