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/* * 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. */import org.xml.sax.Attributes;/** * An Attributes implementation that can perform more operations than the * attribute list helper supplied with the standard SAX2 distribution. */public class AttributesImpl implements Attributes { // // Data // /** Head node. */ private ListNode head; /** Tail node. */ private ListNode tail; /** Length. */ private int length; // // Attributes methods // /** Returns the number of attributes. */ public int getLength() { return length; } /** Returns the index of the specified attribute. */ public int getIndex(String raw) { ListNode place = head; int index = 0; while (place != null) { if (place.raw.equals(raw)) { return index; } index++; place = place.next; } return -1; } /** Returns the index of the specified attribute. */ public int getIndex(String uri, String local) { ListNode place = head; int index = 0; while (place != null) { if (place.uri.equals(uri) && place.local.equals(local)) { return index; } index++; place = place.next; } return -1; } /** Returns the attribute URI by index. */ public String getURI(int index) { ListNode node = getListNodeAt(index); return node != null ? node.uri : null; } // getURI(int):String /** Returns the attribute local name by index. */ public String getLocalName(int index) { ListNode node = getListNodeAt(index); return node != null ? node.local : null; } // getLocalName(int):String /** Returns the attribute raw name by index. */ public String getQName(int index) { ListNode node = getListNodeAt(index); return node != null ? node.raw : null; } // getQName(int):String /** Returns the attribute type by index. */ public String getType(int index) { ListNode node = getListNodeAt(index); return (node != null) ? node.type : null; } // getType(int):String /** Returns the attribute type by uri and local. */ public String getType(String uri, String local) { ListNode node = getListNode(uri, local); return (node != null) ? node.type : null; } // getType(String,String):String /** Returns the attribute type by raw name. */ public String getType(String raw) { ListNode node = getListNode(raw); return (node != null) ? node.type : null; } // getType(String):String /** Returns the attribute value by index. */ public String getValue(int index) { ListNode node = getListNodeAt(index); return (node != null) ? node.value : null; } // getType(int):String /** Returns the attribute value by uri and local. */ public String getValue(String uri, String local) { ListNode node = getListNode(uri, local); return (node != null) ? node.value : null; } // getType(String):String /** Returns the attribute value by raw name. */ public String getValue(String raw) { ListNode node = getListNode(raw); return (node != null) ? node.value : null; } // getType(String):String // // Public methods // /** Adds an attribute. */ public void addAttribute(String raw, String type, String value) { addAttribute(null, null, raw, type, value); } /** Adds an attribute. */ public void addAttribute(String uri, String local, String raw, String type, String value) { ListNode node = new ListNode(uri, local, raw, type, value); if (length == 0) { head = node; } else { tail.next = node; } tail = node; length++; } // addAttribute(String,StringString,String,String) /** Inserts an attribute. */ public void insertAttributeAt(int index, String raw, String type, String value) { insertAttributeAt(index, null, null, raw, type, value); } /** Inserts an attribute. */ public void insertAttributeAt(int index, String uri, String local, String raw, String type, String value) { // if list is empty, add attribute if (length == 0 || index >= length) { addAttribute(uri, local, raw, type, value); return; } // insert at beginning of list ListNode node = new ListNode(uri, local, raw, type, value); if (index < 1) { node.next = head; head = node; } else { ListNode prev = getListNodeAt(index - 1); node.next = prev.next; prev.next = node; } length++; } // insertAttributeAt(int,String,String,String,String,String) /** Removes an attribute. */ public void removeAttributeAt(int index) { if (length == 0) { return; } if (index == 0) { head = head.next; if (head == null) { tail = null; } length--; } else { ListNode prev = getListNodeAt(index - 1); ListNode node = getListNodeAt(index); if (node != null) { prev.next = node.next; if (node == tail) { tail = prev; } length--; } } } // removeAttributeAt(int) /** Removes the specified attribute. */ public void removeAttribute(String raw) { removeAttributeAt(getIndex(raw)); } /** Removes the specified attribute. */ public void removeAttribute(String uri, String local) { removeAttributeAt(getIndex(uri, local)); } // // Private methods // /** Returns the node at the specified index. */ private ListNode getListNodeAt(int i) { for (ListNode place = head; place != null; place = place.next) { if (--i == -1) { return place; } } return null; } // getListNodeAt(int):ListNode /** Returns the first node with the specified uri and local. */ public ListNode getListNode(String uri, String local) { if (uri != null && local != null) { ListNode place = head; while (place != null) { if (place.uri != null && place.local != null && place.uri.equals(uri) && place.local.equals(local)) { return place; } place = place.next; } } return null; } // getListNode(String,String):ListNode /** Returns the first node with the specified raw name. */ private ListNode getListNode(String raw) { if (raw != null) { for (ListNode place = head; place != null; place = place.next) { if (place.raw != null && place.raw.equals(raw)) { return place; } } } return null; } // getListNode(String):ListNode // // Object methods // /** Returns a string representation of this object. */ public String toString() { StringBuffer str = new StringBuffer(); str.append('['); str.append("len="); str.append(length); str.append(", {"); for (ListNode place = head; place != null; place = place.next) { str.append(place.toString()); if (place.next != null) { str.append(", "); } } str.append("}]"); return str.toString(); } // toString():String // // Classes // /** * An attribute node. */ static class ListNode { // // Data // /** Attribute uri. */ public String uri; /** Attribute local. */ public String local; /** Attribute raw. */ public String raw; /** Attribute type. */ public String type; /** Attribute value. */ public String value; /** Next node. */ public ListNode next; // // Constructors // /** Constructs a list node. */ public ListNode(String uri, String local, String raw, String type, String value) { this.uri = uri; this.local = local; this.raw = raw; this.type = type; this.value = value; } // (String,String,String,String,String) // // Object methods // /** Returns string representation of this object. */ public String toString() { return raw != null ? raw : local; } } // class ListNode} // class AttributesImpl
Code testé avec le fichier XML Suivant
Sakoba
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Rappel
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