android/src/com/android/tools/idea/templates/FmTruncateStringMethod.java

/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * 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.android.tools.idea.templates;

import freemarker.template.*;

import java.util.List;

public class FmTruncateStringMethod implements TemplateMethodModelEx {
  @Override
  public TemplateModel exec(List args) throws TemplateModelException {
    if (args.size() != 2) {
      throw new TemplateModelException("Wrong arguments");
    }
    String s = ((TemplateScalarModel)args.get(0)).getAsString();
    int max = ((TemplateNumberModel)args.get(1)).getAsNumber().intValue();
    return new SimpleScalar(s.substring(0, Math.min(s.length(), max)));
  }
}