X-Git-Url: http://git.nikiroo.be/?a=blobdiff_plain;f=src%2Fbe%2Fnikiroo%2Futils%2FCache.java;h=bba88bb4b48f7e970039002393a72a47d50081cf;hb=e704a41477b85b6bb76dff4181df132176aec112;hp=393f634dc5a2b011f88b5e1103ab26d6293e8641;hpb=d827da2aba3d8b0e4a76426b5a76a9045ca584b2;p=nikiroo-utils.git

diff --git a/src/be/nikiroo/utils/Cache.java b/src/be/nikiroo/utils/Cache.java
index 393f634..bba88bb 100644
--- a/src/be/nikiroo/utils/Cache.java
+++ b/src/be/nikiroo/utils/Cache.java
@@ -21,6 +21,12 @@ public class Cache {
 	private long tooOldStable;
 	private TraceHandler tracer = new TraceHandler();
 
+	/**
+	 * Only for inheritance.
+	 */
+	protected Cache() {
+	}
+
 	/**
 	 * Create a new {@link Cache} object.
 	 * 
@@ -70,9 +76,31 @@ public class Cache {
 	 *            the new traces handler
 	 */
 	public void setTraceHandler(TraceHandler tracer) {
+		if (tracer == null) {
+			tracer = new TraceHandler(false, false, false);
+		}
+
 		this.tracer = tracer;
 	}
 
+	/**
+	 * Check the resource to see if it is in the cache.
+	 * 
+	 * @param uniqueID
+	 *            the resource to check
+	 * @param allowTooOld
+	 *            allow files even if they are considered too old
+	 * @param stable
+	 *            a stable file (that dones't change too often) -- parameter
+	 *            used to check if the file is too old to keep or not
+	 * 
+	 * @return TRUE if it is
+	 * 
+	 */
+	public boolean check(String uniqueID, boolean allowTooOld, boolean stable) {
+		return check(getCached(uniqueID), allowTooOld, stable);
+	}
+
 	/**
 	 * Check the resource to see if it is in the cache.
 	 * 
@@ -88,9 +116,31 @@ public class Cache {
 	 * 
 	 */
 	public boolean check(URL url, boolean allowTooOld, boolean stable) {
-		File file = getCached(url);
-		if (file.exists()) {
-			if (allowTooOld || !isOld(file, stable)) {
+		return check(getCached(url), allowTooOld, stable);
+	}
+
+	/**
+	 * Check the resource to see if it is in the cache.
+	 * 
+	 * @param cached
+	 *            the resource to check
+	 * @param allowTooOld
+	 *            allow files even if they are considered too old
+	 * @param stable
+	 *            a stable file (that dones't change too often) -- parameter
+	 *            used to check if the file is too old to keep or not
+	 * 
+	 * @return TRUE if it is
+	 * 
+	 */
+	private boolean check(File cached, boolean allowTooOld, boolean stable) {
+		if (cached.exists() && cached.isFile()) {
+			if (!allowTooOld && isOld(cached, stable)) {
+				if (!cached.delete()) {
+					tracer.error("Cannot delete temporary file: "
+							+ cached.getAbsolutePath());
+				}
+			} else {
 				return true;
 			}
 		}
@@ -190,7 +240,8 @@ public class Cache {
 	 * @return the opened resource if found, NULL if not
 	 */
 	private InputStream load(File cached, boolean allowTooOld, boolean stable) {
-		if (cached.exists() && (allowTooOld || !isOld(cached, stable))) {
+		if (cached.exists() && cached.isFile()
+				&& (allowTooOld || !isOld(cached, stable))) {
 			try {
 				return new MarkableFileInputStream(new FileInputStream(cached));
 			} catch (FileNotFoundException e) {
@@ -209,15 +260,13 @@ public class Cache {
 	 * @param uniqueID
 	 *            a unique ID used to locate the cached resource
 	 * 
-	 * @return the resulting {@link File}
-	 * 
 	 * @throws IOException
 	 *             in case of I/O error
 	 */
-	public File save(InputStream in, String uniqueID) throws IOException {
+	public void save(InputStream in, String uniqueID) throws IOException {
 		File cached = getCached(uniqueID);
 		cached.getParentFile().mkdirs();
-		return save(in, cached);
+		save(in, cached);
 	}
 
 	/**
@@ -228,14 +277,12 @@ public class Cache {
 	 * @param url
 	 *            the {@link URL} used to locate the cached resource
 	 * 
-	 * @return the actual cache file
-	 * 
 	 * @throws IOException
 	 *             in case of I/O error
 	 */
-	public File save(InputStream in, URL url) throws IOException {
+	public void save(InputStream in, URL url) throws IOException {
 		File cached = getCached(url);
-		return save(in, cached);
+		save(in, cached);
 	}
 
 	/**
@@ -246,14 +293,11 @@ public class Cache {
 	 * @param cached
 	 *            the cached {@link File} to save to
 	 * 
-	 * @return the actual cache file
-	 * 
 	 * @throws IOException
 	 *             in case of I/O error
 	 */
-	private File save(InputStream in, File cached) throws IOException {
+	private void save(InputStream in, File cached) throws IOException {
 		IOUtils.write(in, cached);
-		return cached;
 	}
 
 	/**