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/*******************************************************************************
* Copyright (c) 2006, 2015 Symbian Software Ltd. and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Andrew Ferguson (Symbian) - initial API and implementation
* Markus Schorn (Wind River Systems)
* Karsten Thoms (itemis) - Bug 471103
*******************************************************************************/
package org.eclipse.cdt.internal.core.pdom.dom;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.cdt.core.index.IIndexFileLocation;
import org.eclipse.cdt.core.index.IIndexLocationConverter;
import org.eclipse.cdt.internal.core.index.IndexFileLocation;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
/**
* The standard location converter used by the per-project PDOM
*/
public class PDOMProjectIndexLocationConverter implements IIndexLocationConverter {
private static final String EXTERNAL = "<EXT>"; //$NON-NLS-1$
private static final String WS = "<WS>"; //$NON-NLS-1$
final private IWorkspaceRoot fRoot;
final private String fFullPathPrefix;
final private boolean fIgnoreExternal;
// Cache for results of method fromInternalFormat (bug 471103).
final Map<String, IIndexFileLocation> fromInternalFormatCache = new HashMap<>();
public PDOMProjectIndexLocationConverter(IProject project) {
this(project, false);
}
public PDOMProjectIndexLocationConverter(IProject project, boolean ignoreWSExternal) {
fRoot= (IWorkspaceRoot) project.getParent();
fFullPathPrefix= project.getFullPath().toString() + IPath.SEPARATOR;
fIgnoreExternal= ignoreWSExternal;
}
@Override
public IIndexFileLocation fromInternalFormat(String raw) {
// Fast return when 'raw' was queried before (bug 471103).
IIndexFileLocation cachedResult = fromInternalFormatCache.get(raw);
if (cachedResult != null) {
return cachedResult;
}
String fullPath = null;
URI uri= null;
if (raw.startsWith(EXTERNAL)) {
try {
uri = new URI(raw.substring(EXTERNAL.length()));
} catch (URISyntaxException e) {
}
} else {
if (raw.startsWith(WS)) {
fullPath= raw.substring(WS.length());
} else {
fullPath= fFullPathPrefix + raw;
}
final IPath path= new Path(fullPath);
if (path.segmentCount() > 1) {
IResource member= fRoot.getFile(path);
uri = member.getLocationURI();
}
}
if (uri == null)
return null;
IndexFileLocation location = new IndexFileLocation(uri, fullPath);
fromInternalFormatCache.put(raw, location);
return location;
}
@Override
public String toInternalFormat(IIndexFileLocation location) {
String fullPath= location.getFullPath();
if (fullPath != null) {
if (fullPath.startsWith(fFullPathPrefix)) {
return fullPath.substring(fFullPathPrefix.length());
}
return WS + fullPath;
}
if (fIgnoreExternal)
return null;
return EXTERNAL + location.getURI().toString();
}
}
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