Android Open Source - uppidy-android-sdk String Util

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License

The source code is released under:

Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCT...

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Java Source Code

package com.uppidy.android.util;
//from   w  ww  .  ja  v  a 2  s.  c  o m
import java.text.SimpleDateFormat;
import java.util.Collection;
import java.util.Date;

/**
 * String utilities
 * 
 * @author martinc
 *
 */
public class StringUtil {

  private static final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS");
  
  /**
   * 
   * @param date
   * @return
   */
  public static String formatDate(Date date) {
    return sdf.format(date);
  }
  
  /**
   * Formats a number stripping it from any non digit except for a leading plus sign
   * @param number
   * @return
   */
  public static String formatPhoneNumber(String number) {
    if (number != null) {
      String strippedNumber = number.replaceAll("\\D", "");
      if (number.startsWith("+")) {
        return "+" + strippedNumber;
      } else {
        return strippedNumber;
      }
    }
    return null;
  }
  
  /**
   * Creates a comma separated value from the collection elements
   * using the toString method
   * @param col
   * @return
   */
  public static String csv(Collection<?> col) {
    StringBuilder sb = new StringBuilder();
    int i = 0;
    for (Object c : col) {
      if (i > 0) {
        sb.append(",");
      }
      sb.append(c.toString());
      i++;
    }
    
    return sb.toString();
  }
  
  /**
    * Produce a string in double quotes with backslash sequences in all the
    * right places. A backslash will be inserted within </, allowing JSON
    * text to be delivered in HTML. In JSON text, a string cannot contain a
    * control character or an unescaped quote or backslash.
    * @param string A String
    * @return A String correctly formatted for insertion in a JSON text.
    */
    public static String quote(String string) {
        if (string == null || string.length() == 0) {
            return "\"\"";
        }

        char b;
        char c = 0;
        int i;
        int len = string.length();
        StringBuffer sb = new StringBuffer(len + 4);
        String t;

        sb.append('"');
        for (i = 0; i < len; i += 1) {
            b = c;
            c = string.charAt(i);
            switch (c) {
            case '\\':
            case '"':
                sb.append('\\');
                sb.append(c);
                break;
            case '/':
                if (b == '<') {
                    sb.append('\\');
                }
                sb.append(c);
                break;
            case '\b':
                sb.append("\\b");
                break;
            case '\t':
                sb.append("\\t");
                break;
            case '\n':
                sb.append("\\n");
                break;
            case '\f':
                sb.append("\\f");
                break;
            case '\r':
                sb.append("\\r");
                break;
            default:
                if (c < ' ') {
                    t = "000" + Integer.toHexString(c);
                    sb.append("\\u" + t.substring(t.length() - 4));
                } else {
                    sb.append(c);
                }
            }
        }
        sb.append('"');
        return sb.toString();
    }
  
}

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