| /* |
| * Copyright (C) 2011 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 android.filterfw.io; |
| |
| import android.content.Context; |
| import android.filterfw.core.FilterGraph; |
| import android.filterfw.core.KeyValueMap; |
| import android.filterfw.io.GraphIOException; |
| |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.io.IOException; |
| import java.io.StringWriter; |
| |
| /** |
| * @hide |
| */ |
| public abstract class GraphReader { |
| |
| protected KeyValueMap mReferences = new KeyValueMap(); |
| |
| public abstract FilterGraph readGraphString(String graphString) throws GraphIOException; |
| |
| public abstract KeyValueMap readKeyValueAssignments(String assignments) throws GraphIOException; |
| |
| public FilterGraph readGraphResource(Context context, int resourceId) throws GraphIOException { |
| InputStream inputStream = context.getResources().openRawResource(resourceId); |
| InputStreamReader reader = new InputStreamReader(inputStream); |
| StringWriter writer = new StringWriter(); |
| char[] buffer = new char[1024]; |
| try { |
| int bytesRead; |
| while ((bytesRead = reader.read(buffer, 0, 1024)) > 0) { |
| writer.write(buffer, 0, bytesRead); |
| } |
| } catch (IOException e) { |
| throw new RuntimeException("Could not read specified resource file!"); |
| } |
| return readGraphString(writer.toString()); |
| } |
| |
| public void addReference(String name, Object object) { |
| mReferences.put(name, object); |
| } |
| |
| public void addReferencesByMap(KeyValueMap refs) { |
| mReferences.putAll(refs); |
| } |
| |
| public void addReferencesByKeysAndValues(Object... references) { |
| mReferences.setKeyValues(references); |
| } |
| |
| } |