Inline hippo's all libs

* These dependencies are outdated and lack of maintenance

app/src/main/java/com/hippo/unifile/DocumentsContractApi21.java

@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2014 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 com.hippo.unifile;
+
+import android.annotation.TargetApi;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Build;
+import android.provider.DocumentsContract;
+import android.util.Log;
+import java.util.ArrayList;
+import java.util.List;
+
+@TargetApi(Build.VERSION_CODES.LOLLIPOP)
+final class DocumentsContractApi21 {
+    private DocumentsContractApi21() {}
+
+    private static final String TAG = DocumentsContractApi21.class.getSimpleName();
+
+    private static final String PATH_DOCUMENT = "document";
+    private static final String PATH_TREE = "tree";
+
+    public static Uri createFile(Context context, Uri self, String mimeType,
+            String displayName) {
+        try {
+            return DocumentsContract.createDocument(context.getContentResolver(), self, mimeType,
+                    displayName);
+        } catch (Throwable e) {
+            Utils.throwIfFatal(e);
+            // Maybe user ejects tf card
+            Log.e(TAG, "Failed to createFile: " + self, e);
+            return null;
+        }
+    }
+
+    public static Uri createDirectory(Context context, Uri self, String displayName) {
+        return createFile(context, self, DocumentsContract.Document.MIME_TYPE_DIR, displayName);
+    }
+
+    public static Uri prepareTreeUri(Uri treeUri) {
+        return DocumentsContract.buildDocumentUriUsingTree(treeUri,
+                DocumentsContract.getTreeDocumentId(treeUri));
+    }
+
+    public static String getTreeDocumentPath(Uri documentUri) {
+        final List<String> paths = documentUri.getPathSegments();
+        if (paths.size() >= 4 && PATH_TREE.equals(paths.get(0)) && PATH_DOCUMENT.equals(paths.get(2))) {
+            return paths.get(3);
+        }
+        throw new IllegalArgumentException("Invalid URI: " + documentUri);
+    }
+
+    public static Uri buildChildUri(Uri uri, String displayName) {
+        return DocumentsContract.buildDocumentUriUsingTree(uri,
+                getTreeDocumentPath(uri) + "/" + displayName);
+    }
+
+    public static Uri[] listFiles(Context context, Uri self) {
+        final ContentResolver resolver = context.getContentResolver();
+        final Uri childrenUri = DocumentsContract.buildChildDocumentsUriUsingTree(self,
+                DocumentsContract.getDocumentId(self));
+        final ArrayList<Uri> results = new ArrayList<>();
+
+        Cursor c = null;
+        try {
+            c = resolver.query(childrenUri, new String[] {
+                    DocumentsContract.Document.COLUMN_DOCUMENT_ID }, null, null, null);
+            if (null != c) {
+                while (c.moveToNext()) {
+                    final String documentId = c.getString(0);
+                    final Uri documentUri = DocumentsContract.buildDocumentUriUsingTree(self,
+                            documentId);
+                    results.add(documentUri);
+                }
+            }
+        } catch (Throwable e) {
+            Utils.throwIfFatal(e);
+            Log.e(TAG, "Failed listFiles: " + self, e);
+        } finally {
+            Utils.closeQuietly(c);
+        }
+
+        return results.toArray(new Uri[results.size()]);
+    }
+
+    public static Uri renameTo(Context context, Uri self, String displayName) {
+        try {
+            return DocumentsContract.renameDocument(context.getContentResolver(), self, displayName);
+        } catch (Throwable e) {
+            Utils.throwIfFatal(e);
+            // Maybe user ejects tf card
+            Log.e(TAG, "Failed to renameTo:" + self + ", " + displayName, e);
+            return null;
+        }
+    }
+}