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.util; 17 18 import java.io.UnsupportedEncodingException; 19 import java.net.URLDecoder; 20 import java.nio.ByteBuffer; 21 import java.nio.CharBuffer; 22 import java.nio.charset.CharacterCodingException; 23 import java.nio.charset.Charset; 24 import java.nio.charset.CharsetDecoder; 25 import java.nio.charset.CodingErrorAction; 26 27 import org.yaml.snakeyaml.error.YAMLException; 28 import org.yaml.snakeyaml.external.com.google.gdata.util.common.base.Escaper; 29 import org.yaml.snakeyaml.external.com.google.gdata.util.common.base.PercentEscaper; 30 31 public abstract class UriEncoder { 32 private static final CharsetDecoder UTF8Decoder = Charset.forName("UTF-8").newDecoder() 33 .onMalformedInput(CodingErrorAction.REPORT); 34 // Include the [] chars to the SAFEPATHCHARS_URLENCODER to avoid 35 // its escape as required by spec. See 36 // http://yaml.org/spec/1.1/#escaping%20in%20URI/ 37 private static final String SAFE_CHARS = PercentEscaper.SAFEPATHCHARS_URLENCODER + "[]/"; 38 private static final Escaper escaper = new PercentEscaper(SAFE_CHARS, false); 39 40 /** 41 * Escape special characters with '%' 42 */ 43 public static String encode(String uri) { 44 return escaper.escape(uri); 45 } 46 47 /** 48 * Decode '%'-escaped characters. Decoding fails in case of invalid UTF-8 49 */ 50 public static String decode(ByteBuffer buff) throws CharacterCodingException { 51 CharBuffer chars = UTF8Decoder.decode(buff); 52 return chars.toString(); 53 } 54 55 public static String decode(String buff) { 56 try { 57 return URLDecoder.decode(buff, "UTF-8"); 58 } catch (UnsupportedEncodingException e) { 59 throw new YAMLException(e); 60 } 61 } 62 } 63
