org.apache.poi.hdgf.extractor.VisioTextExtractor Maven / Gradle / Ivy
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this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
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http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
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See the License for the specific language governing permissions and
limitations under the License.
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package org.apache.poi.hdgf.extractor;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import org.apache.poi.POIOLE2TextExtractor;
import org.apache.poi.hdgf.HDGFDiagram;
import org.apache.poi.hdgf.chunks.Chunk;
import org.apache.poi.hdgf.chunks.Chunk.Command;
import org.apache.poi.hdgf.streams.ChunkStream;
import org.apache.poi.hdgf.streams.PointerContainingStream;
import org.apache.poi.hdgf.streams.Stream;
import org.apache.poi.poifs.filesystem.DirectoryNode;
import org.apache.poi.poifs.filesystem.NPOIFSFileSystem;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
/**
* Class to find all the text in a Visio file, and return it.
* Can opperate on the command line (outputs to stdout), or
* can return the text for you (eg for use with Lucene).
*/
public final class VisioTextExtractor extends POIOLE2TextExtractor {
private HDGFDiagram hdgf;
public VisioTextExtractor(HDGFDiagram hdgf) {
super(hdgf);
this.hdgf = hdgf;
}
public VisioTextExtractor(POIFSFileSystem fs) throws IOException {
this(fs.getRoot());
}
public VisioTextExtractor(NPOIFSFileSystem fs) throws IOException {
this(fs.getRoot());
}
public VisioTextExtractor(DirectoryNode dir) throws IOException {
this(new HDGFDiagram(dir));
}
/**
* @deprecated Use {@link #VisioTextExtractor(DirectoryNode)} instead
*/
@Deprecated
public VisioTextExtractor(DirectoryNode dir, POIFSFileSystem fs) throws IOException {
this(new HDGFDiagram(dir, fs));
}
public VisioTextExtractor(InputStream inp) throws IOException {
this(new POIFSFileSystem(inp));
}
/**
* Locates all the text entries in the file, and returns their
* contents.
*/
public String[] getAllText() {
ArrayList text = new ArrayList();
for(int i=0; i text) {
if(stream instanceof PointerContainingStream) {
PointerContainingStream ps = (PointerContainingStream)stream;
for(int i=0; i 0) {
// First command
Command cmd = chunk.getCommands()[0];
if(cmd != null && cmd.getValue() != null) {
// Capture the text, as long as it isn't
// simply an empty string
String str = cmd.getValue().toString();
if(str.equals("") || str.equals("\n")) {
// Ignore empty strings
} else {
text.add( str );
}
}
}
}
}
}
/**
* Returns the textual contents of the file.
* Each textual object's text will be separated
* by a newline
*/
public String getText() {
StringBuffer text = new StringBuffer();
String[] allText = getAllText();
for(int i=0; i");
System.exit(1);
}
VisioTextExtractor extractor =
new VisioTextExtractor(new FileInputStream(args[0]));
// Print not PrintLn as already has \n added to it
System.out.print(extractor.getText());
}
}