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    • com.github.jknack.handlebars.helper.LogHelper Maven / Gradle / Ivy

    There is a newer version: 2024.11.18751.20241128T090041Z-241100
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    /**
 * Copyright (c) 2012-2015 Edgar Espina
 *
 * This file is part of Handlebars.java.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.github.jknack.handlebars.helper;

import java.io.IOException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.github.jknack.handlebars.Helper;
import com.github.jknack.handlebars.Options;
import com.github.jknack.handlebars.TagType;

/**
 *  Log a message. Usage:
 *
 *  
     *  {{log "Look at me!" }}
 *
 *  {{log "This is logged" foo "And so is this"}}
 *
 *  {{log "Log!" level="error"}}
 *
 *  {{#log}}
 *   Hi {{name}}!
 *  {{/log}}
 *  
    
 *
 *  @author edgar.espina
 *  @since 4.0.1
 *
 * @deprecated com.github.jknack.handlebars.helper package is deprecated and marked for removal in subsequent releases which will involve removal of the handlebars dependency in AEM.
 */
@Deprecated(since = "2024-07-10")
public class LogHelper implements Helper {

    /**
     * A singleton instance of this helper.
     */
    public static final Helper INSTANCE = new LogHelper();

    /**
     * The logging system.
     */
    private final Logger log = LoggerFactory.getLogger(getClass());

    /**
     * The helper's name.
     */
    public static final String NAME = "log";

    @Override
    public Object apply(final Object context, final Options options) throws IOException {
        StringBuilder sb = new StringBuilder();
        String level = options.hash("level", "info");
        TagType tagType = options.tagType;
        if (tagType.inline()) {
            sb.append(context);
            for (int i = 0; i < options.params.length; i++) {
                sb.append(" ").append((Object) options.param(i));
            }
        } else {
            sb.append(options.fn());
        }
        switch(level) {
            case "error":
                log.error(sb.toString().trim());
                break;
            case "debug":
                log.debug(sb.toString().trim());
                break;
            case "warn":
                log.warn(sb.toString().trim());
                break;
            case "trace":
                log.trace(sb.toString().trim());
                break;
            default:
                log.info(sb.toString().trim());
        }
        return null;
    }
}
    
    
    
    

    




    
    
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