remove bad items from cache

if for some reason a file disappears from the cache (say
you delete it from adb), we need to purge the entry from
the cache

1 files changed, 10 insertions, 2 deletions

diff --git a/src/org/linaro/connect/LRUCache.java b/src/org/linaro/connect/LRUCache.java
index 0623a7c..244ac6b 100644
--- a/src/org/linaro/connect/LRUCache.java
+++ b/src/org/linaro/connect/LRUCache.java
@@ -38,8 +38,16 @@ class LRUCache extends LinkedHashMap<String, File> {
 
 	public InputStream getInputStream(String url) throws IOException {
 		File f = get(url);
-		if( f != null )
-			return new FileInputStream(f);
+		if( f != null ) {
+			try {
+				return new FileInputStream(f);
+			}
+			catch(IOException e) {
+				remove(url);
+				f.delete();
+				throw e;
+			}
+		}
 
 		File cacheFile = toCacheFile(url);
 		return new CachingInputStream(url, cacheFile);