Localizer.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2011 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.turro.elephant.impl.util;
 
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.text.SimpleDateFormat;
import org.turro.string.ObjectString;
import org.turro.elephant.context.IConstructor;
import org.turro.i18n.I_;
 
public class Localizer {
  protected IConstructor constructor;
  
  public Localizer(IConstructor constructor) {
    this.constructor = constructor;
  }
  
  public String parseString(
          String type, 
          String inFormat,
          String outFormat,
          String value) {
    try {
      String format = I_.compatibility().get("fmt." + inFormat);
      if(format == null) format = inFormat;
      if("date".equals(type)) {
        SimpleDateFormat sdfi = new SimpleDateFormat(
          (format == null ? ObjectString.DEFAULT_DATE : format)
        );
        return parseValue(type, outFormat, sdfi.parse(value));
      }
      else if("number".equals(type)) {
        Number number = (Number)ObjectString.parseNativeString(value, Double.class, true);
        return parseValue(type, outFormat, number);
      }
      else if("bytes".equals(type)) {
        Long bytes = (Long)ObjectString.parseNativeString(value, Long.class, true);
        return parseValue(type, outFormat, bytes);
      }
      else
        return value;
    } catch(Exception ex) {
      return "";
    }
  }
 
  public Object parseString(
          String type, 
          String inFormat,
          String value) {
    try {
      String format = I_.compatibility().get("fmt." + inFormat);
      if(format == null) format = inFormat;
      if("date".equals(type)) {
        SimpleDateFormat sdfi = new SimpleDateFormat(
          (format == null ? ObjectString.DEFAULT_DATE : format)
        );
        return sdfi.parse(value);
      }
      else if("number".equals(type)) {
        Number number = (Number)ObjectString.parseNativeString(value, Double.class, true);
        return number;
      }
      else if("bytes".equals(type)) {
        Long bytes = (Long)ObjectString.parseNativeString(value, Long.class, true);
        return bytes;
      }
      else
        return value;
    } catch(Exception ex) {
      return null;
    }
  }
 
  public String parseValue(
          String type, 
          String outFormat,
          Object value) {
    try {
      if("date".equals(type)) {
        outFormat = I_.compatibility().get("fmt." + outFormat);
        SimpleDateFormat sdfo = new SimpleDateFormat(
          (outFormat == null ? ObjectString.DATE_PATTERN : outFormat),
          new java.util.Locale(I_.compatibility().get("fmt.locale"))
        );
        return sdfo.format(value);
      }
      else if("number".equals(type)) {
        outFormat = I_.compatibility().get("fmt." + outFormat);
        NumberFormat dfo = NumberFormat.getInstance(
          new java.util.Locale(I_.compatibility().get("fmt.locale"))
        );
        if(dfo instanceof DecimalFormat) {
          ((DecimalFormat)dfo).applyPattern(
            (outFormat == null ? ObjectString.DEFAULT_NUMBER : outFormat)
          );
        }
        return dfo.format(value);
      }
      else if("bytes".equals(type)) {
        return new org.turro.formatter.BytesFormatter(((Long)value).longValue()).toString();
      }
      else
        return value.toString();
    } catch(Exception ex) {
      return "";
    }
  }
 
}