mirror of
https://github.com/dmolony/DiskBrowser.git
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111 lines
2.7 KiB
Java
111 lines
2.7 KiB
Java
package com.bytezone.diskbrowser.wizardry;
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import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.List;
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import com.bytezone.common.Utility;
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import com.bytezone.diskbrowser.applefile.AbstractFile;
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public class MessageBlock extends AbstractFile implements Iterable<MessageDataBlock>
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{
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private final int indexOffset;
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private final int indexLength;
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private String text;
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private final List<MessageDataBlock> messageDataBlocks =
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new ArrayList<MessageDataBlock> ();
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public MessageBlock (byte[] buffer, Huffman huffman)
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{
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super ("bollocks", buffer);
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indexOffset = Utility.getWord (buffer, 0);
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indexLength = Utility.getWord (buffer, 2);
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int ptr = indexOffset * 512;
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for (int i = 0, max = indexLength / 2; i < max; i++)
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{
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int firstMessageNo = Utility.getWord (buffer, ptr + i * 2);
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byte[] data = new byte[512];
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System.arraycopy (buffer, i * 512, data, 0, data.length);
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MessageDataBlock messageDataBlock = new MessageDataBlock (
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" Message " + firstMessageNo, data, firstMessageNo, huffman);
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messageDataBlocks.add (messageDataBlock);
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}
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}
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public String getMessageText (int messageNo)
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{
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for (int i = 0; i < messageDataBlocks.size (); i++)
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{
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MessageDataBlock messageDataBlock = messageDataBlocks.get (i);
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if (messageDataBlock.lastMessageNo >= messageNo)
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return messageDataBlock.getText (messageNo);
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}
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return null;
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}
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public List<String> getMessageLines (int messageNo)
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{
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List<String> lines = new ArrayList<String> ();
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for (MessageDataBlock messageDataBlock : messageDataBlocks)
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{
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if (messageNo > messageDataBlock.lastMessageNo)
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continue;
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if (messageNo < messageDataBlock.firstMessageNo)
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break;
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while (true)
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{
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String message = messageDataBlock.getText (messageNo);
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if (message != null)
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{
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lines.add (message);
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++messageNo;
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}
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else
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break;
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}
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}
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return lines;
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}
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public byte[] getMessage (int messageNo)
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{
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for (int i = 0; i < messageDataBlocks.size (); i++)
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{
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MessageDataBlock messageDataBlock = messageDataBlocks.get (i);
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if (messageDataBlock.firstMessageNo > messageNo)
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return messageDataBlocks.get (i - 1).getMessage (messageNo);
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}
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return null;
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}
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@Override
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public String getText ()
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{
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if (text != null)
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return text;
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StringBuilder text = new StringBuilder ();
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for (MessageDataBlock mdb : messageDataBlocks)
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{
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text.append (mdb);
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text.append ("\n");
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}
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this.text = text.toString ();
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return this.text;
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}
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@Override
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public Iterator<MessageDataBlock> iterator ()
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{
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return messageDataBlocks.iterator ();
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}
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} |