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/*******************************************************************************
* Copyright (c) 2007, 2010 Wind River Systems, Inc. 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:
* Markus Schorn - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.internal.core.indexer;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import org.eclipse.cdt.core.index.IIndexFileLocation;
import org.eclipse.cdt.core.model.AbstractLanguage;
import org.eclipse.cdt.core.model.ILanguage;
import org.eclipse.cdt.core.parser.CodeReader;
import org.eclipse.cdt.core.parser.FileContent;
import org.eclipse.cdt.core.parser.IScannerInfo;
import org.eclipse.cdt.internal.core.index.IndexFileLocation;
import org.eclipse.cdt.internal.core.pdom.IndexerInputAdapter;
import org.eclipse.cdt.internal.core.pdom.indexer.FileExistsCache;
import org.eclipse.core.filesystem.URIUtil;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
/**
* Provides information about the file paths represented as strings.
* @since 5.0
*/
public class StandaloneIndexerInputAdapter extends IndexerInputAdapter {
private final HashMap<String, IIndexFileLocation> fIflCache= new HashMap<String, IIndexFileLocation>();
private final FileExistsCache fExistsCache = new FileExistsCache();
private final StandaloneIndexer fIndexer;
public StandaloneIndexerInputAdapter(StandaloneIndexer indexer) {
fIndexer= indexer;
}
@Override
public IScannerInfo getBuildConfiguration(int linkageID, Object tu) {
return fIndexer.getScannerInfo((String)tu);
}
@Override
public long getLastModified(IIndexFileLocation location) {
return new File(URIUtil.toPath(location.getURI()).toOSString()).lastModified();
}
@Override
public boolean isSourceUnit(Object tu) {
return isValidSourceUnitName((String) tu);
}
@Override
public boolean isIndexedOnlyIfIncluded(Object tu) {
return false;
}
@Override
public boolean isSource(String filename) {
return isValidSourceUnitName(filename);
}
@Override
public long getFileSize(String astFilePath) {
return new File(astFilePath).length();
}
@Override
public IIndexFileLocation resolveFile(Object tu) {
return resolveASTPath((String) tu);
}
@Override
public String getASTPath(IIndexFileLocation ifl) {
return URIUtil.toPath(ifl.getURI()).toOSString();
}
@Override
public IIndexFileLocation resolveASTPath(String astPath) {
IIndexFileLocation result= fIflCache.get(astPath);
if (result == null) {
try {
astPath = new File(astPath).getCanonicalPath();
} catch (IOException e) {
// use the original
}
//Standalone indexing stores the absolute paths of files being indexed
result = new IndexFileLocation(URIUtil.toURI(astPath), null);
fIflCache.put(astPath, result);
}
return result;
}
@Override
public boolean doesIncludeFileExist(String includePath) {
return fExistsCache.isFile(includePath);
}
@Override
public IIndexFileLocation resolveIncludeFile(String includePath) {
if (!fExistsCache.isFile(includePath)) {
return null;
}
IIndexFileLocation result= fIflCache.get(includePath);
if (result == null) {
File file= new File(includePath);
try {
includePath = file.getCanonicalPath();
} catch (IOException e) {
// use the original
}
//Stand-alone indexing stores the absolute paths of files being indexed
result = new IndexFileLocation(URIUtil.toURI(includePath),null);
fIflCache.put(includePath, result);
}
return result;
}
@Override
public boolean isFileBuildConfigured(Object tu) {
return isValidSourceUnitName((String) tu);
}
@Override
public boolean canBePartOfSDK(IIndexFileLocation ifl) {
return false;
}
@Override
public FileContent getCodeReader(Object tu) {
try {
String stu = (String) tu;
String fileEncoding = null;
// query file's encoding, if we find it and use it to create CodeReader
FileEncodingRegistry fileEncodingRegistry = fIndexer.getFileEncodingRegistry();
if(fileEncodingRegistry != null){
fileEncoding = fileEncodingRegistry.getFileEncoding(stu);
}
if (fileEncoding != null) {
// TODO this is bad
return FileContent.adapt(new CodeReader(stu, fileEncoding));
} else {
return FileContent.createForExternalFileLocation((String) tu);
}
} catch (IOException e) {
}
return null;
}
@Override
public Object getInputFile(IIndexFileLocation location) {
return URIUtil.toPath(location.getURI());
}
@Override
public AbstractLanguage[] getLanguages(Object tu, boolean bothForHeaders) {
ILanguage language = fIndexer.getLanguageMapper().getLanguage((String) tu);
if (language instanceof AbstractLanguage) {
return new AbstractLanguage[] {(AbstractLanguage) language};
}
return new AbstractLanguage[0];
}
private boolean isValidSourceUnitName(String file) {
IPath path = new Path(file);
if (fIndexer.getValidSourceUnitNames() == null || fIndexer.getValidSourceUnitNames().size() == 0)
return true;
return fIndexer.getValidSourceUnitNames().contains(path.getFileExtension());
}
}
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