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/*******************************************************************************
* Copyright (c) 2015 QNX Software Systems 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
*******************************************************************************/
package org.eclipse.cdt.build.core.internal;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.Reader;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.eclipse.cdt.build.core.CBuildConfiguration;
import org.eclipse.cdt.core.CCorePlugin;
import org.eclipse.cdt.core.model.ILanguage;
import org.eclipse.cdt.core.model.LanguageManager;
import org.eclipse.cdt.core.parser.IExtendedScannerInfo;
import org.eclipse.cdt.core.parser.IScannerInfo;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.content.IContentType;
import com.google.gson.Gson;
/**
* Class representing scanner info data for a project as stored in the metadata
* area.
*/
public class ScannerInfoData {
private Set<ToolChainScannerInfo> perResourceInfo;
private Map<String, ToolChainScannerInfo> perLanguageInfo;
private transient Path savePath;
private transient Map<ToolChainScannerInfo, ToolChainScannerInfo> infoCache;
private transient Map<String, ToolChainScannerInfo> resourceCache;
public void createCache() {
infoCache = new HashMap<>();
resourceCache = new HashMap<>();
if (perResourceInfo != null) {
for (ToolChainScannerInfo info : perResourceInfo) {
infoCache.put(info, info);
for (String path : info.getResourcePaths()) {
resourceCache.put(path, info);
}
}
}
}
private boolean perResource() {
return perResourceInfo != null && !perResourceInfo.isEmpty();
}
private boolean perLanguage() {
return perLanguageInfo != null && !perLanguageInfo.isEmpty();
}
public IScannerInfo getScannerInfo(IResource resource) {
if (perResource()) {
ToolChainScannerInfo info = resourceCache.get(resource.getFullPath().toString());
if (info != null) {
return info.getScannerInfo();
}
}
// Else try language
if (perLanguage()) {
IProject project = resource.getProject();
IContentType contentType = CCorePlugin.getContentType(project, resource.getName());
if (contentType != null) {
ILanguage language = LanguageManager.getInstance().getLanguage(contentType, project);
ToolChainScannerInfo info = perLanguageInfo.get(language.getId());
if (info != null) {
return info.getScannerInfo();
}
}
}
return null;
}
public IScannerInfo getScannerInfo(ILanguage language) {
if (perLanguage()) {
ToolChainScannerInfo info = perLanguageInfo.get(language.getId());
if (info != null) {
return info.getScannerInfo();
}
}
return null;
}
public void putScannerInfo(IResource resource, ToolChainScannerInfo info) {
if (perResourceInfo == null) {
perResourceInfo = new HashSet<>();
infoCache = new HashMap<>();
infoCache.put(info, info);
} else {
ToolChainScannerInfo existing = infoCache.get(info);
if (existing != null) {
info = existing;
} else {
perResourceInfo.add(info);
infoCache.put(info, info);
}
}
info.addResource(resource);
resourceCache.put(resource.getFullPath().toString(), info);
queueSave();
}
public void putScannerInfo(ILanguage language, IExtendedScannerInfo info) {
if (perLanguageInfo == null) {
perLanguageInfo = new HashMap<>();
}
perLanguageInfo.put(language.getId(), new ToolChainScannerInfo(info));
queueSave();
}
public static ScannerInfoData load(CBuildConfiguration config) {
IPath stateLoc = Activator.getDefault().getStateLocation();
IPath scannerInfoPath = stateLoc.append(config.getProject().getName()).append(config.getName() + ".scInfo"); //$NON-NLS-1$
File scannerInfoFile = scannerInfoPath.toFile();
ScannerInfoData info = null;
if (scannerInfoFile.canRead()) {
try (Reader reader = new FileReader(scannerInfoFile)) {
info = new Gson().fromJson(reader, ScannerInfoData.class);
} catch (Exception e) {
CCorePlugin.log(e);
}
}
if (info == null) {
info = new ScannerInfoData();
}
info.savePath = scannerInfoFile.toPath();
info.createCache();
return info;
}
public void save() {
try {
String json = new Gson().toJson(this);
Files.createDirectories(savePath.getParent());
Files.write(savePath, json.getBytes(StandardCharsets.UTF_8));
} catch (IOException e) {
CCorePlugin.log(e);
}
}
public void queueSave() {
ScannerInfoSaveParticipant.getInstance().save(this);
}
public void clear() {
perLanguageInfo = null;
perResourceInfo = null;
createCache();
queueSave();
}
}
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