Android Open Source - ara-twitter Tools

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright (c) 2012 BakingCode. All Rights Reserved.
 *//from w ww.  ja  v  a 2s  . co  m
 * This software is the confidential and proprietary information of
 * BakingCode ("Confidential Information").  You shall not disclose such
 * Confidential Information and shall use it only in accordance with 
 * the terms of the license agreement you entered into with BakingCode.
 */ 
package com.bakingcode.io.twitter.tools;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Collection;
import java.util.Date;
import java.util.Locale;

public class Tools {

  /**
     * An empty String for re-use in the Application
     */
    public static final String EMPTY_STRING = "";
    
    /**
     * Large twitter date format sample: "Wed Aug 27 13:08:45 +0000 2008"
     */
    private static final String LARGE_TWITTER_DATE_FORMAT = "EEE MMM dd HH:mm:ss Z yyyy";
    
    /**
     * Simple date format for match LARGET_TWITTER_DATE_FORMAT
     */
    private static final SimpleDateFormat sdfLargeTwitterDateFormat = new SimpleDateFormat(LARGE_TWITTER_DATE_FORMAT, Locale.ENGLISH);
  
  /**
     * Checks if a string is null or empty
     * @param strCheck the string to check
     * @return if the string is null or empty 
     */
    public static boolean isEmpty(String strCheck) {
      return strCheck == null || EMPTY_STRING.equals(strCheck.trim());
    }
    
    /**
     * Checks if a string is not null and have more than 1 character that is not a space " "
     * @param strCheck the string to check
     * @return true if the string is not empty
     */
    public static boolean isNotEmpty(String strCheck) {
      return strCheck != null && !EMPTY_STRING.equals(strCheck.trim());
    }
    
    /**
     * Checks if a Collection is null or empty 
     * @param c collection to check
     * @return if the collection is nul or empty
     */
    public static boolean isEmpty(Collection<?> c) {
      return c == null || c.size() == 0;
    }
    
    /**
     * Checks if a Collection is not null and have more than 1 object 
     * @param c collection to check
     * @return true if the collection is not empty
     */
    public static boolean isNotEmpty(Collection<?> c) {
      return c != null && c.size() > 0;
    }
    
    /**
     * Checks if a Array is not null and have more tha 1 object
     * @param c array to check
     * @return true if the collection is empty
     */
    public static boolean isEmpty(Object[] c) {
      return c == null || c.length == 0;
  }
  
    /**
     * Parses a large dat eof twitter like this:
     * "Wed Aug 27 13:08:45 +0000 2008"
     * @param largeDate large format date of twitter
     * @return a new date
     */
    public static Date parseLargeTweetDate(String largeDate) {
      
      try {
      return sdfLargeTwitterDateFormat.parse(largeDate);
    } catch (ParseException e) {
      e.printStackTrace();
    }
      
      return null;
    }
    
  /**
     * Apache Jakarta commons
   * <p>Joins the elements of the provided array into a single String
   * containing the provided list of elements.</p>
   *
   * <p>No delimiter is added before or after the list.
   * Null objects or empty strings within the array are represented by
   * empty strings.</p>
   *
   * <pre>
   * StringUtils.join(null, *)               = null
   * StringUtils.join([], *)                 = ""
   * StringUtils.join([null], *)             = ""
   * StringUtils.join(["a", "b", "c"], ';')  = "a;b;c"
   * StringUtils.join(["a", "b", "c"], null) = "abc"
   * StringUtils.join([null, "", "a"], ';')  = ";;a"
   * </pre>
   *
   * @param array  the array of values to join together, may be null
   * @param separator  the separator character to use
   * @return the joined String, <code>null</code> if null array input
   */
  public static String join(Object[] array, char separator) {
    
      if (array == null) {
          return null;
      }
      
      int arraySize = array.length;
      int bufSize = (arraySize == 0 ? 0 : ((array[0] == null ? 16 : array[0].toString().length()) + 1) * arraySize);
      StringBuilder buf = new StringBuilder(bufSize);
  
      for (int i = 0; i < arraySize; i++) {
        
          if (i > 0) {
              buf.append(separator);
          }
          
          if (array[i] != null) {
              buf.append(array[i]);
          }
          
      }

      return buf.toString();
  }
  
  /**
     * Apache Jakarta commons
   * <p>Joins the elements of the provided array into a single String
   * containing the provided list of elements.</p>
   *
   * <p>No delimiter is added before or after the list.
   * Null objects or empty strings within the array are represented by
   * empty strings.</p>
   *
   * <pre>
   * StringUtils.join(null, *)               = null
   * StringUtils.join([], *)                 = ""
   * StringUtils.join([null], *)             = ""
   * StringUtils.join(["a", "b", "c"], ';')  = "a;b;c"
   * StringUtils.join(["a", "b", "c"], null) = "abc"
   * StringUtils.join([null, "", "a"], ';')  = ";;a"
   * </pre>
   *
   * @param array  the array of values to join together, may be null
   * @param separator  the separator character to use
   * @return the joined String, <code>null</code> if null array input
   */
  public static String join(long[] array, char separator) {
    
      if (array == null) {
          return null;
      }
      
      int arraySize = array.length;
      StringBuilder buf = new StringBuilder();
  
      for (int i = 0; i < arraySize; i++) {
        
          if (i > 0) {
              buf.append(separator);
          }
          
            buf.append(Long.toString(array[i]));
          
      }

      return buf.toString();
  }

}

Java Source Code List

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