001package org.gwtbootstrap3.client.ui.base.helper;
002
003/*
004 * #%L
005 * GwtBootstrap3
006 * %%
007 * Copyright (C) 2013 - 2014 GwtBootstrap3
008 * %%
009 * Licensed under the Apache License, Version 2.0 (the "License");
010 * you may not use this file except in compliance with the License.
011 * You may obtain a copy of the License at
012 * 
013 *      http://www.apache.org/licenses/LICENSE-2.0
014 * 
015 * Unless required by applicable law or agreed to in writing, software
016 * distributed under the License is distributed on an "AS IS" BASIS,
017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
018 * See the License for the specific language governing permissions and
019 * limitations under the License.
020 * #L%
021 */
022
023
024import com.google.gwt.safehtml.shared.SafeHtml;
025import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
026import com.google.gwt.safehtml.shared.SafeHtmlUtils;
027
028/**
029 * @author Sven Jacobs
030 */
031public final class SourceCodeHelper {
032
033    /**
034     * If source code contains "\n" it will be replaced by a {@code <br>} element and "\s" will be replaced by a whitespace.
035     *
036     * @param code Unformatted source code
037     * @return Formatted source code in HTML for use in {@link org.gwtbootstrap3.client.ui.Pre} or {@link org.gwtbootstrap3.client.ui.Code}
038     */
039    public static SafeHtml parseCode(final String code) {
040        final SafeHtmlBuilder builder = new SafeHtmlBuilder();
041        final String[] splitted = code.replaceAll("\\\\s", " ").split("\\\\n\\s?");
042
043        for (final String s : splitted) {
044            builder.append(SafeHtmlUtils.fromTrustedString(SafeHtmlUtils.htmlEscapeAllowEntities(s)));
045            builder.appendHtmlConstant("<br>");
046        }
047
048        return builder.toSafeHtml();
049    }
050
051    private SourceCodeHelper() {
052    }
053}