StringUtils.java

/* (C) 2012 Pragmatic Software
   This Source Code Form is subject to the terms of the Mozilla Public
   License, v. 2.0. If a copy of the MPL was not distributed with this
   file, You can obtain one at http://mozilla.org/MPL/2.0/
 */

package com.googlecode.networklog;

public class StringUtils {
  public static boolean contains(String string, String chars) {
    int stringLength = string.length();
    int charsLength = chars.length();
    int i, j;
    char c;

    for(i = 0; i < stringLength; i++) {
      c = string.charAt(i);
      for(j = 0; j < charsLength; j++) {
        if(c == chars.charAt(j)) {
          return true;
        }
      }
    }
    return false;
  }

  static enum Format {
    THOUSANDS(0), BYTES(1);

    public int value;
    Format(int value) { this.value = value; }
  };

  static long gigs[] = { 1000000000, 1073741824 };
  static long megs[] = { 1000000, 1048576 };
  static long mult[] = { 1000, 1024 };

  public static String formatToThousands(long value) {
    return formatToMultiplier(value, Format.THOUSANDS);
  }

  public static String formatToBytes(long value) {
    return formatToMultiplier(value, Format.BYTES);
  }

  public static String formatToMultiplier(long value, Format format) {
    String result;
    if(value < mult[format.value]) {
      result = String.valueOf(value);
    } else if(value < megs[format.value]) {
      result = String.format("%.2f", (value / (float) mult[format.value])) + "K";
    } else if(value < gigs[format.value]) {
      result = String.format("%.2f", (value / (float) megs[format.value])) + "M";
    } else {
      result = String.format("%.2f", (value / (float) gigs[format.value])) + "G";
    }
    return result;
  }
}