1 /* 2 * Copyright (C) 2008 The Android Open Source Project 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 17 package org.apache.harmony.xml; 18 19 import org.xml.sax.Attributes; 20 21 import android.compat.annotation.UnsupportedAppUsage; 22 23 /** 24 * Wraps native attribute array. 25 */ 26 abstract class ExpatAttributes implements Attributes { 27 28 /** 29 * Since we don't do validation, pretty much everything is CDATA type. 30 */ 31 private static final String CDATA = "CDATA"; 32 33 @UnsupportedAppUsage ExpatAttributes()34 public ExpatAttributes() { 35 } 36 37 /** 38 * Gets the number of attributes. 39 */ getLength()40 public abstract int getLength(); 41 42 /** 43 * Gets the pointer to the parser. We need this so we can get to the 44 * interned string pool. 45 */ getParserPointer()46 abstract long getParserPointer(); 47 48 /** 49 * Gets the pointer to the underlying attribute array. Can be 0 if the 50 * length is 0. 51 */ getPointer()52 public abstract long getPointer(); 53 getURI(int index)54 public String getURI(int index) { 55 if (index < 0 || index >= getLength()) { 56 return null; 57 } 58 return getURI(getParserPointer(), getPointer(), index); 59 } 60 getLocalName(int index)61 public String getLocalName(int index) { 62 return (index < 0 || index >= getLength()) 63 ? null 64 : getLocalName(getParserPointer(), getPointer(), index); 65 } 66 getQName(int index)67 public String getQName(int index) { 68 return (index < 0 || index >= getLength()) 69 ? null 70 : getQName(getParserPointer(), getPointer(), index); 71 } 72 getType(int index)73 public String getType(int index) { 74 return (index < 0 || index >= getLength()) ? null : CDATA; 75 } 76 getValue(int index)77 public String getValue(int index) { 78 return (index < 0 || index >= getLength()) 79 ? null 80 : getValueByIndex(getPointer(), index); 81 } 82 getIndex(String uri, String localName)83 public int getIndex(String uri, String localName) { 84 if (uri == null) { 85 throw new NullPointerException("uri == null"); 86 } 87 if (localName == null) { 88 throw new NullPointerException("localName == null"); 89 } 90 long pointer = getPointer(); 91 if (pointer == 0) { 92 return -1; 93 } 94 return getIndex(pointer, uri, localName); 95 } 96 getIndex(String qName)97 public int getIndex(String qName) { 98 if (qName == null) { 99 throw new NullPointerException("qName == null"); 100 } 101 long pointer = getPointer(); 102 if (pointer == 0) { 103 return -1; 104 } 105 return getIndexForQName(pointer, qName); 106 } 107 getType(String uri, String localName)108 public String getType(String uri, String localName) { 109 if (uri == null) { 110 throw new NullPointerException("uri == null"); 111 } 112 if (localName == null) { 113 throw new NullPointerException("localName == null"); 114 } 115 return getIndex(uri, localName) == -1 ? null : CDATA; 116 } 117 getType(String qName)118 public String getType(String qName) { 119 return getIndex(qName) == -1 ? null : CDATA; 120 } 121 getValue(String uri, String localName)122 public String getValue(String uri, String localName) { 123 if (uri == null) { 124 throw new NullPointerException("uri == null"); 125 } 126 if (localName == null) { 127 throw new NullPointerException("localName == null"); 128 } 129 long pointer = getPointer(); 130 if (pointer == 0) { 131 return null; 132 } 133 return getValue(pointer, uri, localName); 134 } 135 getValue(String qName)136 public String getValue(String qName) { 137 if (qName == null) { 138 throw new NullPointerException("qName == null"); 139 } 140 long pointer = getPointer(); 141 if (pointer == 0) { 142 return null; 143 } 144 return getValueForQName(pointer, qName); 145 } 146 getURI(long pointer, long attributePointer, int index)147 private static native String getURI(long pointer, long attributePointer, int index); getLocalName(long pointer, long attributePointer, int index)148 private static native String getLocalName(long pointer, long attributePointer, int index); getQName(long pointer, long attributePointer, int index)149 private static native String getQName(long pointer, long attributePointer, int index); getValueByIndex(long attributePointer, int index)150 private static native String getValueByIndex(long attributePointer, int index); getIndex(long attributePointer, String uri, String localName)151 private static native int getIndex(long attributePointer, String uri, String localName); getIndexForQName(long attributePointer, String qName)152 private static native int getIndexForQName(long attributePointer, String qName); getValue(long attributePointer, String uri, String localName)153 private static native String getValue(long attributePointer, String uri, String localName); getValueForQName(long attributePointer, String qName)154 private static native String getValueForQName(long attributePointer, String qName); freeAttributes(long pointer)155 protected native void freeAttributes(long pointer); 156 } 157