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/*
Derby - Class org.apache.derbyTesting.functionTests.util.Formatters
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package org.apache.derbyTesting.functionTests.util;
public class Formatters {
static final char[] hexDigits = { '0', '1', '2', '3',
'4', '5', '6', '7',
'8', '9', 'A', 'B',
'C', 'D', 'E', 'F' };
/** This method converts the non-ASCII characters in the input
* parameter to unicode escape sequences.
* @param in String to format
* @return String containing unicode escape sequences for non-ASCII chars
*/
public static String format(String in) {
if (in == null)
return null;
StringBuffer out = new StringBuffer(in.length());
char hexValue[] = new char[4];
for (int i = 0; i < in.length(); i++) {
char inChar = in.charAt(i);
if (inChar < 128) {
out.append(inChar);
} else {
out.append("\\u");
int number = (int) inChar;
int digit = number % 16;
hexValue[3] = hexDigits[digit];
number /= 16;
digit = number % 16;
hexValue[2] = hexDigits[digit];
number /= 16;
digit = number %16;
hexValue[1] = hexDigits[digit];
number /= 16;
digit = number % 16;
hexValue[0] = hexDigits[digit];
out.append(hexValue);
}
}
return out.toString();
}
/**
* repeatChar is used to create strings of varying lengths.
* called from various tests to test edge cases and such.
*
* @param c character to repeat
* @param repeatCount Number of times to repeat character
* @return String of repeatCount characters c
*/
public static String repeatChar(String c, int repeatCount)
{
char ch = c.charAt(0);
char[] chArray = new char[repeatCount];
for (int i = 0; i < repeatCount; i++)
{
chArray[i] = ch;
}
return new String(chArray);
}
/**
* Pads out a string to the specified size
*
* @param oldValue value to be padded
* @param size size of resulting string
* @return oldValue padded with spaces to the specified size
*/
public static String padString(String oldValue, int size)
{
String newValue = oldValue;
if (newValue != null)
{
char [] newCharArr = new char[size];
oldValue.getChars(0,oldValue.length(),newCharArr,0);
java.util.Arrays.fill(newCharArr,oldValue.length(),
newCharArr.length -1, ' ');
newValue = new String (newCharArr);
}
return newValue;
}
}
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