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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed 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.
* ============LICENSE_END=========================================================
*/
package org.onap.aai.transforms;
/**
* <b>LowerHyphenToLowerCamelConverter</b> is the converter to use
* for converting from the lower hyphen to lower camel case
* <p>
* Examples:
* lower-test => lowerTest
* lower-Test => lowerTest
* lowerTest => lowerTest
* lower-test-val => lowerTestVal
* <p>
*
*/
public class LowerHyphenToLowerCamelConverter implements Converter {
/**
* Converts the dash formatted string into a camel case string
* Ensure that the capitalization is not lost during this conversion
* <p>
* Loops through each character in the string
* checks if the current character is '-' and if it is then sets the
* boolean isPreviousCharDash to true and continues to the next iteration
* If the character is not '-', then checks if the previous character is dash
* If it is, then it will upper case the current character and appends to the builder
* Otherwise, it will just append the current character without any modification
*
* @param input the input string to convert to camel case
* @return a string that is converted to camel case
* if the input is null, then it returns null
*/
@Override
public String convert(String input) {
if(input == null){
return null;
}
int size = input.length();
StringBuilder builder = new StringBuilder(size);
boolean isPreviousCharDash = false;
for(int index = 0; index < size; ++index){
char ch = input.charAt(index);
if(ch == '-'){
isPreviousCharDash = true;
continue;
}
if(isPreviousCharDash){
builder.append(Character.toUpperCase(ch));
isPreviousCharDash = false;
} else{
builder.append(ch);
}
}
return builder.toString();
}
}
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