001    package 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    
024    import com.google.gwt.safehtml.shared.SafeHtml;
025    import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
026    import com.google.gwt.safehtml.shared.SafeHtmlUtils;
027    
028    /**
029     * @author Sven Jacobs
030     */
031    public 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    }