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Serialization

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This commit is contained in:
Georgy Litvinov 2020-04-09 17:16:38 +02:00
parent cebf79d67e
commit da9eb999c1
3 changed files with 62 additions and 25 deletions
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27
source/pro/litvinovg/libreoffice/metadata/MetadataElement.java
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@ -1,15 +1,11 @@
package pro.litvinovg.libreoffice.metadata;
import static pro.litvinovg.libreoffice.metadata.MetadataElement.METADATA_PREFIX;
import java.io.Serializable;
public class MetadataElement {
public static final String METADATA_START = "## Metadata Editor extension. Outline metadata folllows: ";
public static String METADATA_PREFIX = "##";
public static String METADATA_END = "## Metadata Editor extension. Outline metadata ends.";
public class MetadataElement implements Serializable{
private static final long serialVersionUID = 1L;
private String name;
private String value;
@ -17,11 +13,7 @@ public class MetadataElement {
this.name = name;
this.value = value;
}
public MetadataElement(String encodedPair) {
//TODO: Parse encoded pair
this.name = "";
this.value = "";
}
public String getName() {
return name;
}
@ -29,15 +21,6 @@ public class MetadataElement {
public String getValue() {
return value;
}
public static boolean isValidMetadataString(String cursorContent) {
if (!cursorContent.startsWith(METADATA_PREFIX) ||
cursorContent.equals(METADATA_START) ||
cursorContent.equals(METADATA_END)){
return false;
}
String data = cursorContent.substring(cursorContent.lastIndexOf(METADATA_PREFIX));
return true;
}
}

43
source/pro/litvinovg/libreoffice/metadata/MetadataElementFactory.java Normal file
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@ -0,0 +1,43 @@
package pro.litvinovg.libreoffice.metadata;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.Base64;
public class MetadataElementFactory {
public static final String METADATA_START = "## Metadata Editor extension. Outline metadata folllows: ";
public static String METADATA_PREFIX = "##";
public static String METADATA_END = "## Metadata Editor extension. Outline metadata ends.";
public static boolean isValidMetadataString(String cursorContent) {
if (!cursorContent.startsWith(METADATA_PREFIX) ||
cursorContent.equals(METADATA_START) ||
cursorContent.equals(METADATA_END)){
return false;
}
String data = cursorContent.substring(cursorContent.lastIndexOf(METADATA_PREFIX));
return true;
}
public static MetadataElement fromString(String string) throws IOException, ClassNotFoundException {
byte [] data = Base64.getDecoder().decode( string );
ObjectInputStream ois = new ObjectInputStream( new ByteArrayInputStream( data ) );
Object object = ois.readObject();
ois.close();
return (MetadataElement) object;
}
private static String toString( MetadataElement object ) throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream( baos );
oos.writeObject( object );
oos.close();
return Base64.getEncoder().encodeToString(baos.toByteArray());
}
}

17
source/pro/litvinovg/libreoffice/metadata/OutlineElement.java
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@ -1,5 +1,6 @@
package pro.litvinovg.libreoffice.metadata;
import java.io.IOException;
import java.util.ArrayList;
import com.sun.star.text.XParagraphCursor;
@ -7,7 +8,7 @@ import com.sun.star.text.XText;
import com.sun.star.text.XTextCursor;
import com.sun.star.text.XTextRange;
import com.sun.star.uno.UnoRuntime;
import static pro.litvinovg.libreoffice.metadata.MetadataElement.*;
import static pro.litvinovg.libreoffice.metadata.MetadataElementFactory.*;
public class OutlineElement {
@ -52,8 +53,18 @@ public class OutlineElement {
metadataElements = metadataTempElements;
return;
}
if (MetadataElement.isValidMetadataString(cursorContent)) {
metadataTempElements.add(new MetadataElement(cursorContent));
if (MetadataElementFactory.isValidMetadataString(cursorContent)) {
MetadataElement metadataElement = null;
try {
metadataElement = MetadataElementFactory.fromString(cursorContent);
} catch (ClassNotFoundException e) {
e.printStackTrace();
return;
} catch (IOException e) {
e.printStackTrace();
return;
}
metadataTempElements.add(metadataElement);
} else {
//If reading fails exit immediately
return;