X-Git-Url: https://gitweb.fperrin.net/?a=blobdiff_plain;f=src%2Ftim%2Fprune%2Ffunction%2Fsrtm%2FSrtmDiskCache.java;fp=src%2Ftim%2Fprune%2Ffunction%2Fsrtm%2FSrtmDiskCache.java;h=80159e0b33dffeb0c9d178107ea3f567f1679eac;hb=189a667821db055202dcb9f539ee26bd2af7ade4;hp=0000000000000000000000000000000000000000;hpb=2302358503c38817e19f6e529f6c9e530aac0e86;p=GpsPrune.git

diff --git a/src/tim/prune/function/srtm/SrtmDiskCache.java b/src/tim/prune/function/srtm/SrtmDiskCache.java
new file mode 100644
index 0000000..80159e0
--- /dev/null
+++ b/src/tim/prune/function/srtm/SrtmDiskCache.java
@@ -0,0 +1,49 @@
+package tim.prune.function.srtm;
+
+import java.io.File;
+
+import tim.prune.config.Config;
+import tim.prune.I18nManager;
+
+public class SrtmDiskCache {
+
+	private static boolean _cacheIsUsable = false;
+	private static File _cacheDir = null;
+
+	public static boolean ensureCacheIsUsable()
+	{
+
+		if (_cacheIsUsable)
+		{
+			return true;
+		}
+		// Check the cache is ok
+		String diskCachePath = Config.getConfigString(Config.KEY_DISK_CACHE);
+		if (diskCachePath == null)
+		{
+			return false;
+		}
+		File srtmDir = new File(diskCachePath, "srtm");
+		if (!srtmDir.exists() && !srtmDir.mkdir()) {
+			// can't create the srtm directory
+			return false;
+		}
+		_cacheIsUsable = true;
+		_cacheDir = srtmDir;
+		return true;
+	}
+
+	public static File getCacheDir(String inSourceName)
+	{
+		if (_cacheDir == null)
+		{
+			ensureCacheIsUsable();
+		}
+		File cacheDir = new File(_cacheDir, inSourceName);
+		if (!cacheDir.exists() && !cacheDir.mkdir()) {
+			// can't create the srtm directory
+			return null;
+		}
+		return cacheDir;
+	}
+}