1 files changed, 86 insertions, 0 deletions
diff --git a/test/android_src/org/apache/test/android/AndroidFileUtils.java b/test/android_src/org/apache/test/android/AndroidFileUtils.java
new file mode 100644
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+++ b/test/android_src/org/apache/test/android/AndroidFileUtils.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed 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.
+ */
+
+package org.apache.test.android;
+
+import org.junit.Assert;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.UncheckedIOException;
+import java.net.URL;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+public class AndroidFileUtils {
+
+    private static final Path TEMP_DIR;
+
+    static {
+        try {
+            TEMP_DIR = Files.createTempDirectory(AndroidFileUtils.class.getName());
+        } catch (IOException e) {
+            throw new UncheckedIOException(e);
+        }
+    }
+
+    /**
+     * Returns the URL string to the jar resource for a given input file path.
+     * @return null if the input file is not found.
+     */
+    public static URL getInputFileUrl(String path) {
+        Path p = Path.of(path);
+        // Ignore the parts for the current directory.
+        while (true) {
+            if (p.getNameCount() == 0) {
+                return null;
+            }
+            String first = p.getName(0).toString();
+            if (!first.isEmpty() && !first.equals(".")) {
+                break;
+            }
+            p = p.subpath(1, p.getNameCount());
+        }
+        String first = p.getName(0).toString();
+        if (!first.equals("inputs")) {
+            return null;
+        }
+        p = p.subpath(1, p.getNameCount());
+        p = Path.of("api", p.toString());
+        return AndroidFileUtils.class.getClassLoader().getResource(p.toString());
+    }
+
+    /**
+     * Returns the URL string to the jar resource for a given input file path.
+     * @return null if the input file is not found.
+     */
+    public static String getInputFileUrlString(String path) {
+        URL url = getInputFileUrl(path);
+        return url != null ? url.toExternalForm() : null;
+    }
+    /**
+     * Return a File object to the path, and created all directories along the path.
+     * @throws AssertionError if the directories can't be created.
+     */
+    public static File getOutputFile(String relativePath) {
+        File target = TEMP_DIR.resolve(relativePath).toAbsolutePath().toFile();
+        File parent = target.getParentFile();
+        if (!parent.exists()) {
+            Assert.assertTrue(parent.mkdirs());
+        }
+        return target;
+    }
+}