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allow multiple loading of same format

This commit is contained in:
Eyck Jentzsch 2021-11-15 10:52:59 +01:00
parent aef1e29a53
commit 076611eec7
9 changed files with 208 additions and 18 deletions
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2
plugins/com.minres.scviewer.database.text/.classpath
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@ -2,12 +2,12 @@
<classpath>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11"/>
<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
<classpathentry kind="src" path="src/"/>
<classpathentry exported="true" kind="lib" path="lib/mapdb-3.0.7.jar" sourcepath="lib/mapdb-3.0.7-sources.jar">
<attributes>
<attribute name="javadoc_location" value="jar:platform:/resource/com.minres.scviewer.database.text/lib/mapdb-3.0.7-javadoc.jar!/"/>
</attributes>
</classpathentry>
<classpathentry kind="src" path="src"/>
<classpathentry exported="true" kind="lib" path="lib/kotlin-stdlib-1.2.42.jar"/>
<classpathentry exported="true" kind="lib" path="lib/lz4-1.3.0.jar"/>
<classpathentry exported="true" kind="lib" path="lib/elsa-3.0.0-M5.jar"/>

6
plugins/com.minres.scviewer.database.text/OSGI-INF/component.xml
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@ -1,7 +1,7 @@
<?xml version="1.0" encoding="UTF-8"?>
<scr:component xmlns:scr="http://www.osgi.org/xmlns/scr/v1.1.0" name="TextDbLoader">
<implementation class="com.minres.scviewer.database.text.TextDbLoader"/>
<scr:component xmlns:scr="http://www.osgi.org/xmlns/scr/v1.1.0" name="TextDbLoaderFactory">
<implementation class="com.minres.scviewer.database.text.TextDbLoaderFactory"/>
<service>
<provide interface="com.minres.scviewer.database.IWaveformDbLoader"/>
<provide interface="com.minres.scviewer.database.IWaveformDbLoaderFactory"/>
</service>
</scr:component>

77
plugins/com.minres.scviewer.database.text/src/com/minres/scviewer/database/text/TextDbLoaderFactory.java Normal file
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@ -0,0 +1,77 @@
/*******************************************************************************
* Copyright (c) 2012 IT Just working.
* Copyright (c) 2020 MINRES Technologies GmbH
* 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:
* IT Just working - initial API and implementation
*******************************************************************************/
package com.minres.scviewer.database.text;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.GZIPInputStream;
import com.minres.scviewer.database.IWaveformDbLoader;
import com.minres.scviewer.database.IWaveformDbLoaderFactory;
/**
* The Class TextDbLoader.
*/
public class TextDbLoaderFactory implements IWaveformDbLoaderFactory {
/** The Constant x. */
static final byte[] x = "scv_tr_stream".getBytes();
/**
* Checks if f is gzipped.
*
* @param f the f
* @return true, if is gzipped
*/
private static boolean isGzipped(File f) {
try (InputStream is = new FileInputStream(f)) {
byte[] signature = new byte[2];
int nread = is.read(signature); // read the gzip signature
return nread == 2 && signature[0] == (byte) 0x1f && signature[1] == (byte) 0x8b;
} catch (IOException e) {
return false;
}
}
/**
* Can load.
*
* @param inputFile the input file
* @return true, if successful
*/
@Override
public boolean canLoad(File inputFile) {
if (!inputFile.isDirectory() && inputFile.exists()) {
boolean gzipped = isGzipped(inputFile);
try(InputStream stream = gzipped ? new GZIPInputStream(new FileInputStream(inputFile)) : new FileInputStream(inputFile)){
byte[] buffer = new byte[x.length];
int readCnt = stream.read(buffer, 0, x.length);
if (readCnt == x.length) {
for (int i = 0; i < x.length; i++)
if (buffer[i] != x[i])
return false;
}
return true;
} catch (Exception e) {
return false;
}
}
return false;
}
@Override
public IWaveformDbLoader getLoader() {
return new TextDbLoader();
}
}

6
plugins/com.minres.scviewer.database.vcd/OSGI-INF/component.xml
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@ -1,7 +1,7 @@
<?xml version="1.0" encoding="UTF-8"?>
<scr:component xmlns:scr="http://www.osgi.org/xmlns/scr/v1.1.0" name="VCDDbLoader">
<implementation class="com.minres.scviewer.database.vcd.VCDDbLoader"/>
<scr:component xmlns:scr="http://www.osgi.org/xmlns/scr/v1.1.0" name="VCDDbLoaderFactory">
<implementation class="com.minres.scviewer.database.vcd.VCDDbLoaderFactory"/>
<service>
<provide interface="com.minres.scviewer.database.IWaveformDbLoader"/>
<provide interface="com.minres.scviewer.database.IWaveformDbLoaderFactory"/>
</service>
</scr:component>

3
plugins/com.minres.scviewer.database.vcd/src/com/minres/scviewer/database/vcd/VCDDbLoader.java
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@ -164,7 +164,8 @@ public class VCDDbLoader implements IWaveformDbLoader, IVCDDatabaseBuilder {
@Override
public void enterModule(String tokenString) {
if(moduleStack.isEmpty()) {
if("SystemC".compareTo(tokenString)!=0) moduleStack.push(tokenString);
if("SystemC".compareTo(tokenString)!=0)
moduleStack.push(tokenString);
} else
moduleStack.push(moduleStack.peek()+"."+tokenString);

77
plugins/com.minres.scviewer.database.vcd/src/com/minres/scviewer/database/vcd/VCDDbLoaderFactory.java Normal file
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@ -0,0 +1,77 @@
/*******************************************************************************
* Copyright (c) 2015-2021 MINRES Technologies GmbH 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:
* MINRES Technologies GmbH - initial API and implementation
*******************************************************************************/
package com.minres.scviewer.database.vcd;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.GZIPInputStream;
import com.minres.scviewer.database.IWaveformDbLoader;
import com.minres.scviewer.database.IWaveformDbLoaderFactory;
/**
* The Class VCDDb.
*/
public class VCDDbLoaderFactory implements IWaveformDbLoaderFactory {
/**
* Checks if is gzipped.
*
* @param f the f
* @return true, if is gzipped
*/
private static boolean isGzipped(File f) {
try (InputStream is = new FileInputStream(f)) {
byte [] signature = new byte[2];
int nread = is.read( signature ); //read the gzip signature
return nread == 2 && signature[ 0 ] == (byte) 0x1f && signature[ 1 ] == (byte) 0x8b;
}
catch (IOException e) {
return false;
}
}
/**
* Can load.
*
* @param inputFile the input file
* @return true, if successful
*/
@Override
public boolean canLoad(File inputFile) {
if(!inputFile.isDirectory() || inputFile.exists()) {
String name = inputFile.getName();
if(!(name.endsWith(".vcd") ||
name.endsWith(".vcdz") ||
name.endsWith(".vcdgz") ||
name.endsWith(".vcd.gz")) )
return false;
boolean gzipped = isGzipped(inputFile);
try(InputStream stream = gzipped ? new GZIPInputStream(new FileInputStream(inputFile)) : new FileInputStream(inputFile)){
byte[] buffer = new byte[8];
if (stream.read(buffer, 0, buffer.length) == buffer.length) {
return buffer[0]=='$';
}
} catch (Exception e) {
return false;
}
}
return false;
}
@Override
public IWaveformDbLoader getLoader() {
return new VCDDbLoader();
}
}

2
plugins/com.minres.scviewer.database/OSGI-INF/component.xml
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@ -1,5 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<scr:component xmlns:scr="http://www.osgi.org/xmlns/scr/v1.1.0" name="com.minres.scviewer.database.loader">
<implementation class="com.minres.scviewer.database.internal.WaveformDb"/>
<reference bind="bind" cardinality="1..n" interface="com.minres.scviewer.database.IWaveformDbLoader" name="IWaveformDbLoader" policy="dynamic" unbind="unbind"/>
<reference bind="bind" cardinality="1..n" interface="com.minres.scviewer.database.IWaveformDbLoaderFactory" name="IWaveformDbLoaderFactory" policy="dynamic" unbind="unbind"/>
</scr:component>

33
plugins/com.minres.scviewer.database/src/com/minres/scviewer/database/IWaveformDbLoaderFactory.java Normal file
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@ -0,0 +1,33 @@
/*******************************************************************************
* Copyright (c) 2015-2021 MINRES Technologies GmbH 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:
* MINRES Technologies GmbH - initial API and implementation
*******************************************************************************/
package com.minres.scviewer.database;
import java.io.File;
/**
* A factory for creating IWaveformDb objects.
*/
public interface IWaveformDbLoaderFactory {
/**
* Check if the loader produced by this factory can load the given file.
*
* @param inputFile the input file
* @return true, if successful
*/
public boolean canLoad(File inputFile);
/**
* Gets the database.
*
* @return the database
*/
IWaveformDbLoader getLoader();
}

20
plugins/com.minres.scviewer.database/src/com/minres/scviewer/database/internal/WaveformDb.java
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@ -25,6 +25,7 @@ import com.minres.scviewer.database.IHierNode;
import com.minres.scviewer.database.IWaveform;
import com.minres.scviewer.database.IWaveformDb;
import com.minres.scviewer.database.IWaveformDbLoader;
import com.minres.scviewer.database.IWaveformDbLoaderFactory;
import com.minres.scviewer.database.RelationType;
/**
@ -33,7 +34,7 @@ import com.minres.scviewer.database.RelationType;
public class WaveformDb extends HierNode implements IWaveformDb, PropertyChangeListener {
/** The loaders. */
private static List<IWaveformDbLoader> loaders = new LinkedList<>();
private static List<IWaveformDbLoaderFactory> loaderFactories = new LinkedList<>();
/** The loaded. */
private boolean loaded;
@ -52,8 +53,8 @@ public class WaveformDb extends HierNode implements IWaveformDb, PropertyChangeL
*
* @param loader the loader
*/
public synchronized void bind(IWaveformDbLoader loader) {
loaders.add(loader);
public synchronized void bind(IWaveformDbLoaderFactory loader) {
loaderFactories.add(loader);
}
/**
@ -61,8 +62,8 @@ public class WaveformDb extends HierNode implements IWaveformDb, PropertyChangeL
*
* @param loader the loader
*/
public synchronized void unbind(IWaveformDbLoader loader) {
loaders.remove(loader);
public synchronized void unbind(IWaveformDbLoaderFactory loader) {
loaderFactories.remove(loader);
}
/**
@ -70,8 +71,8 @@ public class WaveformDb extends HierNode implements IWaveformDb, PropertyChangeL
*
* @return the loaders
*/
public static List<IWaveformDbLoader> getLoaders() {
return Collections.unmodifiableList(loaders);
public static List<IWaveformDbLoaderFactory> getLoaders() {
return Collections.unmodifiableList(loaderFactories);
}
/**
@ -124,8 +125,9 @@ public class WaveformDb extends HierNode implements IWaveformDb, PropertyChangeL
@Override
public boolean load(File inp) {
boolean retval = true;
for (IWaveformDbLoader loader : loaders) {
if (loader.canLoad(inp)) {
for (IWaveformDbLoaderFactory loaderFactory : loaderFactories) {
if (loaderFactory.canLoad(inp)) {
IWaveformDbLoader loader = loaderFactory.getLoader();
loader.addPropertyChangeListener(this);
try {
loader.load(this, inp);