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1
57
58 package sax.helpers;
59
60 import org.xml.sax.AttributeList  ;
61
62
67 public class AttributeListImpl
68 implements AttributeList {
69
70
74
75 private ListNode head;
76
77
78 private ListNode tail;
79
80
81 private int length;
82
83
87
88 public int getLength() {
89 return length;
90 }
91
92
93 public String getName(int index) {
94
95 ListNode node = getNodeAt(index);
96 return (node != null) ? node.name : null;
97
98 }
100
101 public String getType(int index) {
102
103 ListNode node = getNodeAt(index);
104 return (node != null) ? node.type : null;
105
106 }
108
109 public String getValue(int index) {
110
111 ListNode node = getNodeAt(index);
112 return (node != null) ? node.value : null;
113
114 }
116
117 public String getType(String name) {
118
119 ListNode node = getNodeAt(name);
120 return (node != null) ? node.type : null;
121
122 }
124
125 public String getValue(String name) {
126
127 ListNode node = getNodeAt(name);
128 return (node != null) ? node.value : null;
129
130 }
132
136
137 public void addAttribute(String name, String type, String value) {
138
139 ListNode node = new ListNode(name, type, value);
140 if (length == 0) {
141 head = node;
142 }
143 else {
144 tail.next = node;
145 }
146 tail = node;
147 length++;
148
149 }
151
152 public void insertAttributeAt(int index,
153 String name, String type, String value) {
154
155 if (length == 0 || index >= length) {
157 addAttribute(name, type, value);
158 return;
159 }
160
161 ListNode node = new ListNode(name, type, value);
163 if (index < 1) {
164 node.next = head;
165 head = node;
166 }
167 else {
168 ListNode prev = getNodeAt(index - 1);
169 node.next = prev.next;
170 prev.next = node;
171 }
172 length++;
173
174 }
176
177 public void removeAttributeAt(int index) {
178
179 if (length == 0) {
180 return;
181 }
182
183 if (index == 0) {
184 head = head.next;
185 if (head == null) {
186 tail = null;
187 }
188 length--;
189 }
190 else {
191 ListNode prev = getNodeAt(index - 1);
192 ListNode node = getNodeAt(index);
193 if (node != null) {
194 prev.next = node.next;
195 if (node == tail) {
196 tail = prev;
197 }
198 length--;
199 }
200 }
201
202 }
204
208
209 private ListNode getNodeAt(int i) {
210
211 for (ListNode place = head; place != null; place = place.next) {
212 if (--i == -1) {
213 return place;
214 }
215 }
216
217 return null;
218
219 }
221
222 private ListNode getNodeAt(String name) {
223
224 if (name != null) {
225 for (ListNode place = head; place != null; place = place.next) {
226 if (place.name.equals(name)) {
227 return place;
228 }
229 }
230 }
231
232 return null;
233
234 }
236
240
241 public String toString() {
242 StringBuffer str = new StringBuffer ();
243
244 str.append('[');
245 str.append("len=");
246 str.append(length);
247 str.append(", {");
248 for (ListNode place = head; place != null; place = place.next) {
249 str.append(place.name);
250 if (place.next != null) {
251 str.append(", ");
252 }
253 }
254 str.append("}]");
255
256 return str.toString();
257
258 }
260
264
267 static class ListNode {
268
269
273
274 public String name;
275
276
277 public String type;
278
279
280 public String value;
281
282
283 public ListNode next;
284
285
289
290 public ListNode(String name, String type, String value) {
291 this.name = name;
292 this.type = type;
293 this.value = value;
294 }
295
296 }
298 } |
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