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/*******************************************************************************
* Copyright (c) 2006 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.debug.internal.ui.views.memory.renderings;
import java.io.UnsupportedEncodingException;
import java.math.BigInteger;
import org.eclipse.debug.core.model.MemoryByte;
import org.eclipse.debug.internal.ui.DebugUIPlugin;
import org.eclipse.debug.ui.IDebugUIConstants;
/**
* Abstract implementation of a rendering that translates memory into
* text, displayed in a table.
* <p>
* Clients should subclass from this class if they wish to provide a table
* text rendering with a specific code page.
* </p>
* @since 3.2
*/
abstract public class AbstractAsyncTextRendering extends AbstractAsyncTableRendering {
private String fCodePage;
/**
* Constructs a text rendering of the specified type.
*
* @param renderingId memory rendering type identifier
*/
public AbstractAsyncTextRendering(String renderingId)
{
super(renderingId);
}
/**
* Constructs a text rendering of the specified type on the given
* code page.
*
* @param renderingId memory rendering type identifier
* @param codePage the name of a supported
* {@link java.nio.charset.Charset </code>charset<code>}, for
* example <code>CP1252</code>
*/
public AbstractAsyncTextRendering(String renderingId, String codePage)
{
super(renderingId);
fCodePage = codePage;
}
/**
* Sets the code page for this rendering. This does not cause
* the rendering to be updated with the new code page. Clients need
* to update the rendering manually when the code page is changed.
*
* @param codePage the name of a supported
* {@link java.nio.charset.Charset </code>charset<code>}, for
* example <code>CP1252</code>
*/
public void setCodePage(String codePage)
{
fCodePage = codePage;
}
/**
* Returns the current code page used by this rendering. Returns null
* if not set.
* @return Returns the current code page used by this rendering. Returns null
* if not set.
*/
public String getCodePage()
{
return fCodePage;
}
/* (non-Javadoc)
* @see org.eclipse.debug.ui.memory.AbstractTableRendering#getString(java.lang.String, java.math.BigInteger, org.eclipse.debug.core.model.MemoryByte[])
*/
public String getString(String dataType, BigInteger address, MemoryByte[] data) {
try {
String paddedStr = DebugUIPlugin.getDefault().getPreferenceStore().getString(IDebugUIConstants.PREF_PADDED_STR);
if(fCodePage == null)
return ""; //$NON-NLS-1$
boolean invalid = false;
for (int i=0; i<data.length; i++)
{
if (!data[i].isReadable())
{
invalid = true;
break;
}
}
if (invalid)
{
StringBuffer strBuf = new StringBuffer();
for (int i=0; i<data.length; i++)
{
strBuf.append(paddedStr);
}
return strBuf.toString();
}
byte byteArray[] = new byte[data.length];
for (int i=0; i<byteArray.length; i++)
{
byteArray[i] = data[i].getValue();
}
return new String(byteArray, fCodePage);
} catch (UnsupportedEncodingException e) {
return "-- error --"; //$NON-NLS-1$
}
}
/* (non-Javadoc)
* @see com.ibm.debug.extended.ui.AbstractTableViewTabLabelProvider#getBytes(java.lang.String)
*/
public byte[] getBytes(String dataType, BigInteger address, MemoryByte[] currentValues, String data) {
try {
if (fCodePage == null)
return new byte[0];
byte[] bytes = data.getBytes(fCodePage);
return bytes;
} catch (UnsupportedEncodingException e) {
return new byte[0];
}
}
}
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