| /* |
| * 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. |
| */ |
| package org.apache.felix.serializer.impl.yaml; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.lang.reflect.Type; |
| import java.nio.charset.Charset; |
| import java.nio.charset.StandardCharsets; |
| import java.util.Map; |
| import java.util.Scanner; |
| |
| import org.apache.felix.serializer.Deserializing; |
| import org.apache.felix.serializer.Parser; |
| import org.apache.felix.serializer.impl.Util; |
| import org.osgi.util.converter.ConversionException; |
| import org.osgi.util.converter.Converter; |
| |
| public class YamlDeserializingImpl<T> implements Deserializing<T> { |
| private volatile Converter converter; |
| private volatile Parser parser; |
| private final Type type; |
| |
| YamlDeserializingImpl(Converter c, Parser p, Type cls) { |
| converter = c; |
| parser = p; |
| type = cls; |
| } |
| |
| @Override |
| public T from(InputStream in) { |
| return from(in, StandardCharsets.UTF_8); |
| } |
| |
| @Override |
| public T from(InputStream in, Charset charset) { |
| try { |
| byte[] bytes = Util.readStream(in); |
| String s = new String(bytes, charset); |
| return from(s); |
| } catch (IOException e) { |
| throw new ConversionException("Error reading inputstream", e); |
| } |
| } |
| |
| @Override |
| public T from(Readable in) { |
| try (Scanner s = new Scanner(in)) { |
| s.useDelimiter("\\Z"); |
| return from(s.next()); |
| } |
| } |
| |
| @Override |
| @SuppressWarnings("unchecked") |
| public T from(CharSequence in) { |
| Map<?,?> m = parser.parse(in); |
| if (type instanceof Class) |
| if (m.getClass().isAssignableFrom((Class<?>) type)) |
| return (T) m; |
| |
| return (T) converter.convert(m).to(type); |
| } |
| |
| @Override |
| public Deserializing<T> convertWith(Converter c) { |
| converter = c; |
| return this; |
| } |
| |
| @Override |
| public Deserializing<T> parseWith(Parser p) { |
| parser = p; |
| return this; |
| } |
| } |