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/*******************************************************************************
* Copyright (c) 2007, 2015 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.help.internal.webapp.data;
import java.util.List;
import java.util.StringTokenizer;
import org.eclipse.core.runtime.Platform;
import org.eclipse.help.internal.base.HelpBasePlugin;
import org.eclipse.help.internal.util.ProductPreferences;
/**
* Utility class for parsing the CSS preferences
*/
public class CssUtil {
private final static String cssLink1 = "<link rel=\"stylesheet\" href=\""; //$NON-NLS-1$
private static final String cssLink2 = "\" type=\"text/css\"></link>\n"; //$NON-NLS-1$
private static String replaceParameters(String input) {
final String OS = "${os}"; //$NON-NLS-1$
int index = input.indexOf(OS);
if (index < 0) {
return input;
}
String result = input.substring(0, index) + Platform.getOS() + input.substring(index + OS.length());
return replaceParameters(result);
}
/**
* @param filenames
* @return
*/
public static String[] getCssFilenames(String filenames ) {
if (filenames == null) {
return new String[0];
}
StringTokenizer tok = new StringTokenizer(filenames , ","); //$NON-NLS-1$
String[] result = new String[tok.countTokens()];
for (int i = 0; tok.hasMoreTokens(); i++) {
result[i] = replaceParameters(tok.nextToken().trim());
}
return result;
}
public static void addCssFiles(final String preference, List<String> list) {
String topicCssPath = Platform.getPreferencesService().getString(HelpBasePlugin.PLUGIN_ID, preference, "", null); //$NON-NLS-1$
String[] cssFiles = CssUtil.getCssFilenames(topicCssPath);
for (String cssFile : cssFiles) {
list.add(cssFile);
}
}
public static String createCssIncludes(List<String> cssFiles, String backPath) {
StringBuffer script = new StringBuffer();
for (String cssPath : cssFiles) {
script.append(cssLink1);
script.append(fixCssPath(cssPath, backPath));
script.append(cssLink2);
}
return script.toString();
}
/*
* Substitute for PLUGINS_ROOT and PRODUCT_PLUGIN
*/
private static String fixCssPath(String path, String prefix) {
String newPath = ProductPreferences.resolveSpecialIdentifiers(path);
return prefix + "content" + newPath; //$NON-NLS-1$
}
}
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