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1 package org.enhydra.snapper.parsers;
2
3 import java.io.FileInputStream  ;
4 import java.util.Collection ;
5 import java.util.Iterator ;
6 import java.util.Map ;
7 import java.util.Set ;
8
9 import org.apache.poi.poifs.filesystem.DocumentInputStream;
10
11 import org.apache.poi.poifs.eventfilesystem.POIFSReader;
12 import org.apache.poi.poifs.eventfilesystem.POIFSReaderEvent;
13 import org.apache.poi.poifs.eventfilesystem.POIFSReaderListener;
14 import java.io.InputStream ;
15
16 public class PowerParser
17 implements org.enhydra.snapper.api.Parser, POIFSReaderListener {
18 private static final int TWO8 = 256;
19 private static final int TWO16 = 65536;
20 private static final int[] SIGNATURE = {
21 159, 15, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 168, 15};
22 private static final int SPACE = 32;
23 private String fileName;
24 private String parsedText;
25 public String title;
26 private String properties = "";
27 public Map customproperties;
28
29
30
31 public void parse() {
32 FileInputStream fis = null;
33 try {
34 POIFSReader r = new POIFSReader();
36 DocumentPOIFSReaderListener docpoi = new DocumentPOIFSReaderListener();
37 r.registerListener(docpoi,
38 "\005DocumentSummaryInformation");
39
40 MyPOIFSReaderListener mypoi = new MyPOIFSReaderListener();
41 r.registerListener(mypoi,
42 "\005SummaryInformation");
43
44 r.registerListener(this, "PowerPoint Document");
45 fis = new FileInputStream (fileName);
46 r.read(fis);
47
48 title = mypoi.getTitle();
49
50 if (docpoi.getCustomProperties() == null) {
51 properties = "";
52 return;
53 }
54 customproperties = docpoi.getCustomProperties();
55 createString(customproperties);
56 fis.close();
57 fis = null;
58
59 }
60 catch (Exception e) {
61 ParserManager.logger.info("***** File could not be parsed: " + fileName);
62 }
64
65 finally {
66 if (fis != null){
67 try{
68 fis.close();
69 } catch (Exception ex){};
70 fis = null;
71 }
72 }
73
74 }
75
76 public void setFileName(String fileName) {
77 this.fileName = fileName;
78 }
79
80 public String getParsedText() {
81 return parsedText;
82 }
83
84 public String getTitle() {
85 return title;
86 }
87
88 public String getProperties() {
89 return properties;
90 }
91
92 private void createString(Map customproperties) {
93 Collection values = customproperties.values();
94 Iterator valuesIterator = values.iterator();
95 properties = "";
96 Set keys = customproperties.keySet();
97 Iterator keysIterator = keys.iterator();
98
99 for (Iterator it = customproperties.entrySet().iterator(); it.hasNext(); ) {
100 Map.Entry entry = (Map.Entry ) it.next();
101 properties += entry.getKey().toString() + " " + entry.getValue() + " ";
102 }
103
104 }
105
106
107 public String parse(InputStream stream) throws java.io.IOException {
108 StringBuffer content = new StringBuffer ();
109 int letter = 0;
110 int found = 0;
111 boolean separator = true;
112 int zeroCounter = 0;
113 int tobeRead = 0;
114 StringBuffer word = new StringBuffer ();
115 while ( (letter = stream.read()) != -1) {
116 if ( ( (found < SIGNATURE.length) && (letter == SIGNATURE[found])) ||
118 found == 6) {
119 found++;
120 }
121 else if ( (found <= SIGNATURE.length) && (letter == SIGNATURE[0])) {
122 found = 1;
123 }
124 else if (found < 14) {
125 found = 0;
126 }
127 else if (found == 14) {
128 found++;
129 tobeRead = letter;
130 }
131 else if (found == 15) {
132 found++;
133 tobeRead += TWO8 * letter;
134 }
135 else if (found == 16) {
136 tobeRead += TWO16 * letter;
137 found++;
138 }
139 else if (found == 17) {
140 found++;
141 }
142 else if (tobeRead > 0) {
143 tobeRead--;
144 if (letter == 13) {
145 word.append('\n');
146 }
147 else if (letter < 32) {
148 word.append(' ');
149 }
150 else {
151 word.append( (char) letter);
152 }
153 if (tobeRead == 0) {
155 found = 0;
156 word.append('\n');
157 content.append(word);
159 word = new StringBuffer ();
160 }
161 }
162 }
163 return new String (content);
165 }
166
167 public void processPOIFSReaderEvent(POIFSReaderEvent event) {
168 try {
169 DocumentInputStream input = event.getStream();
170 parsedText = parse(input);
171 input.close();
172 input = null;
173 }
174 catch (Exception ex) {
175 ex.printStackTrace();
176 }
177 }
178 } |
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