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/*******************************************************************************
* Copyright (c) 2008, 2012 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.internal.ui.wizards.settingswizards;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.cdt.core.settings.model.ICFolderDescription;
import org.eclipse.cdt.core.settings.model.ICLanguageSetting;
import org.eclipse.cdt.core.settings.model.ICLanguageSettingEntry;
import org.w3c.dom.Element;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;
/**
* Base class implementing standard import and export functionality
* for a section of the file.
*
* @author Mike Kucera
* @since 5.1
*/
public abstract class SettingsProcessor implements ISettingsProcessor {
protected static final String NONE = ""; //$NON-NLS-1$
protected static final String CDATA = "CDATA"; //$NON-NLS-1$
protected static final String NAME_ATTRIBUTE = "name"; //$NON-NLS-1$
protected static final String LANGUAGE_ELEMENT = "language"; //$NON-NLS-1$
/**
* Returns a constant from the ICSettingEntry interface.
*/
protected abstract int getSettingsType();
protected abstract void writeSettings(ContentHandler content, ICLanguageSettingEntry setting)
throws SettingsImportExportException;
protected abstract void readSettings(ICLanguageSetting setting, Element language)
throws SettingsImportExportException;
/**
* Outputs a newline (\n) to the given ContentHandler.
*/
protected static void newline(ContentHandler handler) throws SAXException {
handler.ignorableWhitespace("\n".toCharArray(), 0, 1); //$NON-NLS-1$
}
@Override
public void writeSectionXML(ICFolderDescription projectRoot, ContentHandler content)
throws SettingsImportExportException {
ICLanguageSetting[] languages = projectRoot.getLanguageSettings();
AttributesImpl attributes = new AttributesImpl();
try {
for (ICLanguageSetting language : languages) {
//TODO for some reason language.getLanguageId() is returning null
String languageName = language.getName();
attributes.clear();
attributes.addAttribute(NONE, NONE, NAME_ATTRIBUTE, CDATA, languageName);
content.startElement(NONE, NONE, LANGUAGE_ELEMENT, attributes);
newline(content);
ICLanguageSettingEntry[] settings = language.getSettingEntries(getSettingsType());
for (ICLanguageSettingEntry setting : settings) {
if (!setting.isBuiltIn()) {
writeSettings(content, setting);
}
}
newline(content);
content.endElement(NONE, NONE, LANGUAGE_ELEMENT);
newline(content);
}
} catch (SAXException e) {
throw new SettingsImportExportException(e);
}
}
@Override
public void readSectionXML(ICFolderDescription projectRoot, Element section) throws SettingsImportExportException {
ICLanguageSetting[] languageSettings = projectRoot.getLanguageSettings();
Map<String, ICLanguageSetting> languageMap = new HashMap<String, ICLanguageSetting>();
for (ICLanguageSetting language : languageSettings) {
languageMap.put(language.getName(), language);
}
List<Element> elements = XMLUtils.extractChildElements(section, LANGUAGE_ELEMENT); // throws SettingsImportExportException
for (Element languageElement : elements) {
String languageName = languageElement.getAttribute(NAME_ATTRIBUTE);
ICLanguageSetting setting = languageMap.get(languageName);
if (setting != null)
readSettings(setting, languageElement);
}
}
}
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