/* ====================================================================
* Limited Evaluation License:
*
* This software is open source, but licensed. The license with this package
* is an evaluation license, which may not be used for productive systems. If
* you want a full license, please contact us.
*
* The exclusive owner of this work is the OpenRate project.
* This work, including all associated documents and components
* is Copyright of the OpenRate project 2006-2015.
*
* The following restrictions apply unless they are expressly relaxed in a
* contractual agreement between the license holder or one of its officially
* assigned agents and you or your organisation:
*
* 1) This work may not be disclosed, either in full or in part, in any form
* electronic or physical, to any third party. This includes both in the
* form of source code and compiled modules.
* 2) This work contains trade secrets in the form of architecture, algorithms
* methods and technologies. These trade secrets may not be disclosed to
* third parties in any form, either directly or in summary or paraphrased
* form, nor may these trade secrets be used to construct products of a
* similar or competing nature either by you or third parties.
* 3) This work may not be included in full or in part in any application.
* 4) You may not remove or alter any proprietary legends or notices contained
* in or on this work.
* 5) This software may not be reverse-engineered or otherwise decompiled, if
* you received this work in a compiled form.
* 6) This work is licensed, not sold. Possession of this software does not
* imply or grant any right to you.
* 7) You agree to disclose any changes to this work to the copyright holder
* and that the copyright holder may include any such changes at its own
* discretion into the work
* 8) You agree not to derive other works from the trade secrets in this work,
* and that any such derivation may make you liable to pay damages to the
* copyright holder
* 9) You agree to use this software exclusively for evaluation purposes, and
* that you shall not use this software to derive commercial profit or
* support your business or personal activities.
*
* This software is provided "as is" and any expressed or impled warranties,
* including, but not limited to, the impled warranties of merchantability
* and fitness for a particular purpose are disclaimed. In no event shall
* The OpenRate Project or its officially assigned agents be liable to any
* direct, indirect, incidental, special, exemplary, or consequential damages
* (including but not limited to, procurement of substitute goods or services;
* Loss of use, data, or profits; or any business interruption) however caused
* and on theory of liability, whether in contract, strict liability, or tort
* (including negligence or otherwise) arising in any way out of the use of
* this software, even if advised of the possibility of such damage.
* This software contains portions by The Apache Software Foundation, Robert
* Half International.
* ====================================================================
*/
package OpenRate.utils;
/**
* StringUtils - this optimization performs better than the JDK version under
* 1.3.1, but roughly equivalently (or sometimes slower) under 1.4.2. Therefore
* only use it if you <b>have to</b> and you are using an older JDK. It's use
* is no longer recommended.
*
*/
public class StringUtils
{
/**
* Constructor for StringUtils.
*/
public StringUtils()
{
super();
}
/**
* This method runs about 20 times faster than java.lang.String.toLowerCase
* (and doesn't waste any storage when the result is equal to the input).
* Warning: Don't use this method when your default locale is Turkey.
*
* java.lang.String.toLowerCase is slow because (a) it uses a StringBuffer
* (which has synchronized methods), (b) it initializes the StringBuffer to
* the default size, and (c) it gets the default locale every time to test
* for name equal to "tr".
*
* @param str The string to convert
* @return The converted string
* @author Peter Norvig
*/
public static String toLowerCase(String str)
{
int len = str.length();
int different = -1;
// See if there is a char that is different in lowercase
for (int i = len - 1; i >= 0; i--)
{
char ch = str.charAt(i);
if (Character.toLowerCase(ch) != ch)
{
different = i;
break;
}
}
// If the string has no different char, then return the string as is,
// otherwise create a lowercase version in a char array.
if (different == -1)
{
return str;
}
else
{
char[] chars = new char[len];
str.getChars(0, len, chars, 0);
// (Note we start at different, not at len.)
for (int j = different; j >= 0; j--)
{
chars[j] = Character.toLowerCase(chars[j]);
}
return new String(chars);
}
}
/**
* This method runs about 20 times faster than java.lang.String.toUpperCase
* (and doesn't waste any storage when the result is equal to the input).
* Warning: Don't use this method when your default locale is Turkey.
*
* java.lang.String.toUpperCase is slow because (a) it uses a StringBuffer
* (which has synchronized methods), (b) it initializes the StringBuffer
* to the default size, and (c) it gets the default locale every time to
* test for name equal to "tr".
*
* @param str The string to convert
* @return The converted string
* @author Peter Norvig
*/
public static String toUpperCase(String str)
{
int len = str.length();
int different = -1;
// See if there is a char that is different in uppercase
for (int i = len - 1; i >= 0; i--)
{
char ch = str.charAt(i);
if (Character.toUpperCase(ch) != ch)
{
different = i;
break;
}
}
// If the string has no different char, then return the string as is,
// otherwise create a lowercase version in a char array.
if (different == -1)
{
return str;
}
else
{
char[] chars = new char[len];
str.getChars(0, len, chars, 0);
// (Note we start at different, not at len.)
for (int j = different; j >= 0; j--)
{
chars[j] = Character.toUpperCase(chars[j]);
}
return new String(chars);
}
}
}