1
2 /* ====================================================================
3 Licensed to the Apache Software Foundation (ASF) under one or more
4 contributor license agreements. See the NOTICE file distributed with
5 this work for additional information regarding copyright ownership.
6 The ASF licenses this file to You under the Apache License, Version 2.0
7 (the "License"); you may not use this file except in compliance with
8 the License. You may obtain a copy of the License at
9
10 http://www.apache.org/licenses/LICENSE-2.0
11
12 Unless required by applicable law or agreed to in writing, software
13 distributed under the License is distributed on an "AS IS" BASIS,
14 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 See the License for the specific language governing permissions and
16 limitations under the License.
17 ==================================================================== */
18
19
20
21 package org.apache.poi.hwpf.model;
22
23
24 import org.apache.poi.util.LittleEndian;
25
26 import org.apache.poi.hwpf.usermodel.ParagraphProperties;
27 import org.apache.poi.hwpf.sprm.ParagraphSprmUncompressor;
28 import org.apache.poi.hwpf.sprm.SprmBuffer;
29 import org.apache.poi.hwpf.sprm.SprmOperation;
30
31 /**
32 * Comment me
33 *
34 * @author Ryan Ackley
35 */
36
37 public class PAPX extends PropertyNode
38 {
39
40 private ParagraphHeight _phe;
41 private int _hugeGrpprlOffset = -1;
42
43 public PAPX(int fcStart, int fcEnd, byte[] papx, ParagraphHeight phe, byte[] dataStream)
44 {
45 super(fcStart, fcEnd, new SprmBuffer(papx));
46 _phe = phe;
47 SprmBuffer buf = findHuge(new SprmBuffer(papx), dataStream);
48 if(buf != null)
49 _buf = buf;
50 }
51
52 public PAPX(int fcStart, int fcEnd, SprmBuffer buf, byte[] dataStream)
53 {
54 super(fcStart, fcEnd, buf);
55 _phe = new ParagraphHeight();
56 buf = findHuge(buf, dataStream);
57 if(buf != null)
58 _buf = buf;
59 }
60
61 private SprmBuffer findHuge(SprmBuffer buf, byte[] datastream)
62 {
63 byte[] grpprl = buf.toByteArray();
64 if(grpprl.length==8 && datastream!=null) // then check for sprmPHugePapx
65 {
66 SprmOperation sprm = new SprmOperation(grpprl, 2);
67 if ((sprm.getOperation()==0x45 || sprm.getOperation()==0x46)
68 && sprm.getSizeCode() == 3)
69 {
70 int hugeGrpprlOffset = sprm.getOperand();
71 if(hugeGrpprlOffset+1 < datastream.length)
72 {
73 int grpprlSize = LittleEndian.getShort(datastream, hugeGrpprlOffset);
74 if( hugeGrpprlOffset+grpprlSize < datastream.length)
75 {
76 byte[] hugeGrpprl = new byte[grpprlSize + 2];
77 // copy original istd into huge Grpprl
78 hugeGrpprl[0] = grpprl[0]; hugeGrpprl[1] = grpprl[1];
79 // copy Grpprl from dataStream
80 System.arraycopy(datastream, hugeGrpprlOffset + 2, hugeGrpprl, 2,
81 grpprlSize);
82 // save a pointer to where we got the huge Grpprl from
83 _hugeGrpprlOffset = hugeGrpprlOffset;
84 return new SprmBuffer(hugeGrpprl);
85 }
86 }
87 }
88 }
89 return null;
90 }
91
92
93 public ParagraphHeight getParagraphHeight()
94 {
95 return _phe;
96 }
97
98 public byte[] getGrpprl()
99 {
100 return ((SprmBuffer)_buf).toByteArray();
101 }
102
103 public int getHugeGrpprlOffset()
104 {
105 return _hugeGrpprlOffset;
106 }
107
108 public short getIstd()
109 {
110 byte[] buf = getGrpprl();
111 if (buf.length == 0)
112 {
113 return 0;
114 }
115 else
116 {
117 return LittleEndian.getShort(buf);
118 }
119 }
120
121 public SprmBuffer getSprmBuf()
122 {
123 return (SprmBuffer)_buf;
124 }
125
126 public ParagraphProperties getParagraphProperties(StyleSheet ss)
127 {
128 short istd = getIstd();
129 ParagraphProperties baseStyle = ss.getParagraphStyle(istd);
130 ParagraphProperties props = ParagraphSprmUncompressor.uncompressPAP(baseStyle, getGrpprl(), 2);
131 return props;
132 }
133
134 public boolean equals(Object o)
135 {
136 if (super.equals(o))
137 {
138 return _phe.equals(((PAPX)o)._phe);
139 }
140 return false;
141 }
142 }
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