1 /** 2 * Copyright (c) 2008, http://www.snakeyaml.org 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package org.yaml.snakeyaml; 17 18 import java.io.ByteArrayOutputStream; 19 import java.io.InputStream; 20 import java.io.OutputStreamWriter; 21 import java.io.UnsupportedEncodingException; 22 import java.nio.charset.Charset; 23 24 import org.yaml.snakeyaml.constructor.Constructor; 25 26 public class YamlDocument { 27 public static final String ROOT = "specification/"; 28 private String source; 29 private String presentation; 30 private Object nativeData; 31 YamlDocument(String sourceName, boolean check, Constructor constructor)32 public YamlDocument(String sourceName, boolean check, Constructor constructor) { 33 InputStream input = YamlDocument.class.getClassLoader().getResourceAsStream( 34 ROOT + sourceName); 35 if (constructor == null) { 36 constructor = new Constructor(); 37 } 38 Yaml yaml = new Yaml(constructor); 39 nativeData = yaml.load(input); 40 ByteArrayOutputStream output = new ByteArrayOutputStream(); 41 Charset charset = Charset.forName("UTF-8"); 42 yaml.dump(nativeData, new OutputStreamWriter(output, charset)); 43 try { 44 presentation = output.toString(charset.name()); 45 source = Util.getLocalResource(ROOT + sourceName); 46 } catch (UnsupportedEncodingException e) { 47 throw new RuntimeException(e); 48 } 49 // try to read generated presentation to prove that the presentation 50 // is identical to the source 51 Object result = yaml.load(presentation); 52 if (check && !nativeData.equals(result)) { 53 throw new RuntimeException("Generated presentation is not valid: " + presentation); 54 } 55 } 56 YamlDocument(String sourceName, boolean check)57 public YamlDocument(String sourceName, boolean check) { 58 this(sourceName, check, null); 59 } 60 YamlDocument(String sourceName)61 public YamlDocument(String sourceName) { 62 this(sourceName, true); 63 } 64 getSource()65 public String getSource() { 66 return source; 67 } 68 getPresentation()69 public String getPresentation() { 70 return presentation; 71 } 72 getNativeData()73 public Object getNativeData() { 74 if (nativeData == null) { 75 throw new NullPointerException("No object is parsed."); 76 } 77 return nativeData; 78 } 79 } 80