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1
16
17
18 package org.apache.poi.hssf.record;
19
20 import org.apache.poi.ddf.DefaultEscherRecordFactory;
21 import org.apache.poi.ddf.EscherRecord;
22 import org.apache.poi.ddf.EscherRecordFactory;
23 import org.apache.poi.ddf.NullEscherSerializationListener;
24 import org.apache.poi.util.LittleEndian;
25
26 import java.util.ArrayList  ;
27 import java.util.Iterator ;
28 import java.util.List ;
29
30
37 public abstract class AbstractEscherHolderRecord
38 extends Record
39 {
40 private static final boolean DESERIALISE = System.getProperty("poi.deserialize.escher") != null;
41
42 private List escherRecords;
43 private byte[] rawData;
44
45
46 public AbstractEscherHolderRecord()
47 {
48 escherRecords = new ArrayList ();
49 }
50
51
59
60 public AbstractEscherHolderRecord(short id, short size, byte [] data)
61 {
62 super(id, size, data);
63
64 }
65
66
75
76 public AbstractEscherHolderRecord(short id, short size, byte [] data, int offset)
77 {
78 super(id, size, data, offset);
79
80 }
81
82
87 protected void validateSid(short id)
88 {
89 if (id != getSid())
90 {
91 throw new RecordFormatException("Not a Bar record");
92 }
93 }
94
95 protected void fillFields(byte [] data, short size, int offset)
96 {
97 escherRecords = new ArrayList ();
98 if (! DESERIALISE )
99 {
100 rawData = new byte[size];
101 System.arraycopy(data, offset, rawData, 0, size);
102 }
103 else
104 {
105 EscherRecordFactory recordFactory = new DefaultEscherRecordFactory();
106 int pos = offset;
107 while ( pos < offset + size )
108 {
109 EscherRecord r = recordFactory.createRecord(data, pos);
110 int bytesRead = r.fillFields(data, pos, recordFactory );
111 escherRecords.add(r);
112 pos += bytesRead;
113 }
114 }
115 }
116
117 public String toString()
118 {
119 StringBuffer buffer = new StringBuffer ();
120
121 final String nl = System.getProperty("line.separator");
122 buffer.append('[' + getRecordName() + ']' + nl);
123 for ( Iterator iterator = escherRecords.iterator(); iterator.hasNext(); )
124 {
125 EscherRecord r = (EscherRecord) iterator.next();
126 buffer.append(r.toString());
127 }
128 buffer.append("[/" + getRecordName() + ']' + nl);
129
130 return buffer.toString();
131 }
132
133 protected abstract String getRecordName();
134
135 public int serialize(int offset, byte[] data)
136 {
137 LittleEndian.putShort( data, 0 + offset, getSid() );
138 LittleEndian.putShort( data, 2 + offset, (short) ( getRecordSize() - 4 ) );
139 if ( escherRecords.size() == 0 && rawData != null )
140 {
141 System.arraycopy( rawData, 0, data, offset + 4, rawData.length );
142 }
143 else
144 {
145 int pos = offset + 4;
146 for ( Iterator iterator = escherRecords.iterator(); iterator.hasNext(); )
147 {
148 EscherRecord r = (EscherRecord) iterator.next();
149 pos += r.serialize( pos, data, new NullEscherSerializationListener() );
150 }
151 }
152 return getRecordSize();
153 }
154
155
180
183 public int getRecordSize()
184 {
185 if (escherRecords.size() == 0 && rawData != null)
186 {
187 return rawData.length + 4;
188 }
189 else
190 {
191 int size = 4;
192 for ( Iterator iterator = escherRecords.iterator(); iterator.hasNext(); )
193 {
194 EscherRecord r = (EscherRecord) iterator.next();
195 size += r.getRecordSize();
196 }
197 return size;
198 }
199 }
200
201
225 public abstract short getSid();
226
227 public Object clone()
228 {
229 throw new IllegalStateException ("Not implemented yet.");
230 }
231
232 public void addEscherRecord(int index, EscherRecord element)
233 {
234 escherRecords.add( index, element );
235 }
236
237 public boolean addEscherRecord(EscherRecord element)
238 {
239 return escherRecords.add( element );
240 }
241
242 public List getEscherRecords()
243 {
244 return escherRecords;
245 }
246
247 public void clearEscherRecords()
248 {
249 escherRecords.clear();
250 }
251
252
253 public EscherRecord getEscherRecord(int index)
254 {
255 return (EscherRecord) escherRecords.get(index);
256 }
257
258
259 }
261
262
263
264 |
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