1 files changed, 111 insertions, 0 deletions
diff --git a/mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/client/cache/FileResourceFactory.java b/mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/client/cache/FileResourceFactory.java
new file mode 100644
index 000000000..8522c54b5
--- /dev/null
+++ b/mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/client/cache/FileResourceFactory.java
@@ -0,0 +1,111 @@
+/*
+ * ====================================================================
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ *
+ */
+package ch.boye.httpclientandroidlib.impl.client.cache;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+import ch.boye.httpclientandroidlib.annotation.Immutable;
+import ch.boye.httpclientandroidlib.client.cache.InputLimit;
+import ch.boye.httpclientandroidlib.client.cache.Resource;
+import ch.boye.httpclientandroidlib.client.cache.ResourceFactory;
+
+/**
+ * Generates {@link Resource} instances whose body is stored in a temporary file.
+ *
+ * @since 4.1
+ */
+@Immutable
+public class FileResourceFactory implements ResourceFactory {
+
+    private final File cacheDir;
+    private final BasicIdGenerator idgen;
+
+    public FileResourceFactory(final File cacheDir) {
+        super();
+        this.cacheDir = cacheDir;
+        this.idgen = new BasicIdGenerator();
+    }
+
+    private File generateUniqueCacheFile(final String requestId) {
+        final StringBuilder buffer = new StringBuilder();
+        this.idgen.generate(buffer);
+        buffer.append('.');
+        final int len = Math.min(requestId.length(), 100);
+        for (int i = 0; i < len; i++) {
+            final char ch = requestId.charAt(i);
+            if (Character.isLetterOrDigit(ch) || ch == '.') {
+                buffer.append(ch);
+            } else {
+                buffer.append('-');
+            }
+        }
+        return new File(this.cacheDir, buffer.toString());
+    }
+
+    public Resource generate(
+            final String requestId,
+            final InputStream instream,
+            final InputLimit limit) throws IOException {
+        final File file = generateUniqueCacheFile(requestId);
+        final FileOutputStream outstream = new FileOutputStream(file);
+        try {
+            final byte[] buf = new byte[2048];
+            long total = 0;
+            int l;
+            while ((l = instream.read(buf)) != -1) {
+                outstream.write(buf, 0, l);
+                total += l;
+                if (limit != null && total > limit.getValue()) {
+                    limit.reached();
+                    break;
+                }
+            }
+        } finally {
+            outstream.close();
+        }
+        return new FileResource(file);
+    }
+
+    public Resource copy(
+            final String requestId,
+            final Resource resource) throws IOException {
+        final File file = generateUniqueCacheFile(requestId);
+
+        if (resource instanceof FileResource) {
+            final File src = ((FileResource) resource).getFile();
+            IOUtils.copyFile(src, file);
+        } else {
+            final FileOutputStream out = new FileOutputStream(file);
+            IOUtils.copyAndClose(resource.getInputStream(), out);
+        }
+        return new FileResource(file);
+    }
+
+}