com.appslandia.plum.pebble.functions.ConstFunction Maven / Gradle / Ivy

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// The MIT License (MIT)
// Copyright © 2015 AppsLandia. All rights reserved.

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

package com.appslandia.plum.pebble.functions;

import java.io.IOException;

import com.appslandia.common.utils.XmlEscaper;
import com.appslandia.plum.base.ConstDescProvider;
import com.appslandia.plum.pebble.DynPebbleFunction;
import com.appslandia.plum.pebble.TemplateEvaluationContext;
import com.appslandia.plum.utils.ServletUtils;

import io.pebbletemplates.pebble.extension.escaper.SafeString;

/**
 *
 * @author Loc Ha
 *
 */
public class ConstFunction extends DynPebbleFunction {

  @Override
  protected Object doExecute(TemplateEvaluationContext context, int lineNumber) throws IOException {
    Object value = context.getArgument("value");
    if (value == null) {
      return null;
    }

    ConstDescProvider constDescProvider = ServletUtils.getAppScoped(context.getRequest().getServletContext(),
        ConstDescProvider.class);

    String group = context.getRequiredArgument("group");
    String descKey = constDescProvider.getDescKey(group, value);

    if (descKey != null) {
      return new SafeString(context.getRequestContext().escXml(descKey));
    } else {
      return new SafeString(XmlEscaper.escapeXml(value.toString()));
    }
  }
}