Source Code Cross Referenced for StyleDescription.java in  » Collaboration » poi-3.0.2-beta2 » org » apache » poi » hwpf » model » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Collaboration » poi 3.0.2 beta2 » org.apache.poi.hwpf.model 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /* ====================================================================
002:         Licensed to the Apache Software Foundation (ASF) under one or more
003:         contributor license agreements.  See the NOTICE file distributed with
004:         this work for additional information regarding copyright ownership.
005:         The ASF licenses this file to You under the Apache License, Version 2.0
006:         (the "License"); you may not use this file except in compliance with
007:         the License.  You may obtain a copy of the License at
008:
009:         http://www.apache.org/licenses/LICENSE-2.0
010:
011:         Unless required by applicable law or agreed to in writing, software
012:         distributed under the License is distributed on an "AS IS" BASIS,
013:         WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014:         See the License for the specific language governing permissions and
015:         limitations under the License.
016:         ==================================================================== */
017:
018:        package org.apache.poi.hwpf.model;
019:
020:        import java.io.UnsupportedEncodingException;
021:        import java.util.Arrays;
022:
023:        import org.apache.poi.hwpf.usermodel.CharacterProperties;
024:        import org.apache.poi.hwpf.usermodel.ParagraphProperties;
025:        import org.apache.poi.util.LittleEndian;
026:        import org.apache.poi.util.BitField;
027:        import org.apache.poi.util.BitFieldFactory;
028:
029:        /**
030:         * Comment me
031:         *
032:         * @author Ryan Ackley
033:         */
034:
035:        public class StyleDescription implements  HDFType {
036:
037:            private final static int PARAGRAPH_STYLE = 1;
038:            private final static int CHARACTER_STYLE = 2;
039:
040:            private int _istd;
041:            private int _baseLength;
042:            private short _infoShort;
043:            private static BitField _sti = BitFieldFactory.getInstance(0xfff);
044:            private static BitField _fScratch = BitFieldFactory
045:                    .getInstance(0x1000);
046:            private static BitField _fInvalHeight = BitFieldFactory
047:                    .getInstance(0x2000);
048:            private static BitField _fHasUpe = BitFieldFactory
049:                    .getInstance(0x4000);
050:            private static BitField _fMassCopy = BitFieldFactory
051:                    .getInstance(0x8000);
052:            private short _infoShort2;
053:            private static BitField _styleTypeCode = BitFieldFactory
054:                    .getInstance(0xf);
055:            private static BitField _baseStyle = BitFieldFactory
056:                    .getInstance(0xfff0);
057:            private short _infoShort3;
058:            private static BitField _numUPX = BitFieldFactory.getInstance(0xf);
059:            private static BitField _nextStyle = BitFieldFactory
060:                    .getInstance(0xfff0);
061:            private short _bchUpe;
062:            private short _infoShort4;
063:            private static BitField _fAutoRedef = BitFieldFactory
064:                    .getInstance(0x1);
065:            private static BitField _fHidden = BitFieldFactory.getInstance(0x2);
066:
067:            UPX[] _upxs;
068:            String _name;
069:            ParagraphProperties _pap;
070:            CharacterProperties _chp;
071:
072:            public StyleDescription() {
073:                //      _pap = new ParagraphProperties();
074:                //      _chp = new CharacterProperties();
075:            }
076:
077:            public StyleDescription(byte[] std, int baseLength, int offset,
078:                    boolean word9) {
079:                _baseLength = baseLength;
080:                int nameStart = offset + baseLength;
081:                _infoShort = LittleEndian.getShort(std, offset);
082:                offset += LittleEndian.SHORT_SIZE;
083:                _infoShort2 = LittleEndian.getShort(std, offset);
084:                offset += LittleEndian.SHORT_SIZE;
085:                _infoShort3 = LittleEndian.getShort(std, offset);
086:                offset += LittleEndian.SHORT_SIZE;
087:                _bchUpe = LittleEndian.getShort(std, offset);
088:                offset += LittleEndian.SHORT_SIZE;
089:                _infoShort4 = LittleEndian.getShort(std, offset);
090:                offset += LittleEndian.SHORT_SIZE;
091:
092:                //first byte(s) of variable length section of std is the length of the
093:                //style name and aliases string
094:                int nameLength = 0;
095:                int multiplier = 1;
096:                if (word9) {
097:                    nameLength = LittleEndian.getShort(std, nameStart);
098:                    multiplier = 2;
099:                    nameStart += LittleEndian.SHORT_SIZE;
100:                } else {
101:                    nameLength = std[nameStart];
102:                }
103:
104:                try {
105:                    _name = new String(std, nameStart, nameLength * multiplier,
106:                            "UTF-16LE");
107:                } catch (UnsupportedEncodingException ignore) {
108:                    // ignore
109:                }
110:
111:                //length then null terminator.
112:                int grupxStart = ((nameLength + 1) * multiplier) + nameStart;
113:
114:                // the spec only refers to two possible upxs but it mentions
115:                // that more may be added in the future
116:                int varOffset = grupxStart;
117:                int numUPX = _numUPX.getValue(_infoShort3);
118:                _upxs = new UPX[numUPX];
119:                for (int x = 0; x < numUPX; x++) {
120:                    int upxSize = LittleEndian.getShort(std, varOffset);
121:                    varOffset += LittleEndian.SHORT_SIZE;
122:
123:                    byte[] upx = new byte[upxSize];
124:                    System.arraycopy(std, varOffset, upx, 0, upxSize);
125:                    _upxs[x] = new UPX(upx);
126:                    varOffset += upxSize;
127:
128:                    // the upx will always start on a word boundary.
129:                    if (upxSize % 2 == 1) {
130:                        ++varOffset;
131:                    }
132:
133:                }
134:
135:            }
136:
137:            public int getBaseStyle() {
138:                return _baseStyle.getValue(_infoShort2);
139:            }
140:
141:            public byte[] getCHPX() {
142:                switch (_styleTypeCode.getValue(_infoShort2)) {
143:                case PARAGRAPH_STYLE:
144:                    if (_upxs.length > 1) {
145:                        return _upxs[1].getUPX();
146:                    }
147:                    return null;
148:                case CHARACTER_STYLE:
149:                    return _upxs[0].getUPX();
150:                default:
151:                    return null;
152:                }
153:
154:            }
155:
156:            public byte[] getPAPX() {
157:                switch (_styleTypeCode.getValue(_infoShort2)) {
158:                case PARAGRAPH_STYLE:
159:                    return _upxs[0].getUPX();
160:                default:
161:                    return null;
162:                }
163:            }
164:
165:            public ParagraphProperties getPAP() {
166:                return _pap;
167:            }
168:
169:            public CharacterProperties getCHP() {
170:                return _chp;
171:            }
172:
173:            void setPAP(ParagraphProperties pap) {
174:                _pap = pap;
175:            }
176:
177:            void setCHP(CharacterProperties chp) {
178:                _chp = chp;
179:            }
180:
181:            public String getName() {
182:                return _name;
183:            }
184:
185:            public byte[] toByteArray() {
186:                // size equals _baseLength bytes for known variables plus 2 bytes for name
187:                // length plus name length * 2 plus 2 bytes for null plus upx's preceded by
188:                // length
189:                int size = _baseLength + 2 + ((_name.length() + 1) * 2);
190:
191:                // determine the size needed for the upxs. They always fall on word
192:                // boundaries.
193:                size += _upxs[0].size() + 2;
194:                for (int x = 1; x < _upxs.length; x++) {
195:                    size += _upxs[x - 1].size() % 2;
196:                    size += _upxs[x].size() + 2;
197:                }
198:
199:                byte[] buf = new byte[size];
200:
201:                int offset = 0;
202:                LittleEndian.putShort(buf, offset, _infoShort);
203:                offset += LittleEndian.SHORT_SIZE;
204:                LittleEndian.putShort(buf, offset, _infoShort2);
205:                offset += LittleEndian.SHORT_SIZE;
206:                LittleEndian.putShort(buf, offset, _infoShort3);
207:                offset += LittleEndian.SHORT_SIZE;
208:                LittleEndian.putShort(buf, offset, _bchUpe);
209:                offset += LittleEndian.SHORT_SIZE;
210:                LittleEndian.putShort(buf, offset, _infoShort4);
211:                offset = _baseLength;
212:
213:                char[] letters = _name.toCharArray();
214:                LittleEndian.putShort(buf, _baseLength, (short) letters.length);
215:                offset += LittleEndian.SHORT_SIZE;
216:                for (int x = 0; x < letters.length; x++) {
217:                    LittleEndian.putShort(buf, offset, (short) letters[x]);
218:                    offset += LittleEndian.SHORT_SIZE;
219:                }
220:                // get past the null delimiter for the name.
221:                offset += LittleEndian.SHORT_SIZE;
222:
223:                for (int x = 0; x < _upxs.length; x++) {
224:                    short upxSize = (short) _upxs[x].size();
225:                    LittleEndian.putShort(buf, offset, upxSize);
226:                    offset += LittleEndian.SHORT_SIZE;
227:                    System
228:                            .arraycopy(_upxs[x].getUPX(), 0, buf, offset,
229:                                    upxSize);
230:                    offset += upxSize + (upxSize % 2);
231:                }
232:
233:                return buf;
234:            }
235:
236:            public boolean equals(Object o) {
237:                StyleDescription sd = (StyleDescription) o;
238:                if (sd._infoShort == _infoShort
239:                        && sd._infoShort2 == _infoShort2
240:                        && sd._infoShort3 == _infoShort3
241:                        && sd._bchUpe == _bchUpe
242:                        && sd._infoShort4 == _infoShort4
243:                        && _name.equals(sd._name)) {
244:
245:                    if (!Arrays.equals(_upxs, sd._upxs)) {
246:                        return false;
247:                    }
248:                    return true;
249:                }
250:                return false;
251:            }
252:        }
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