/*
* Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License or Apache License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* and the Apache License along with the SmallMind Code Project. If not, see
* <http://www.gnu.org/licenses/> or <http://www.apache.org/licenses/LICENSE-2.0>.
*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
* alone subject to any of the requirements of the GNU Affero GPL
* version 3.
*/
package org.smallmind.nutsnbolts.util;
public class EnumUtility {
public static String toEnumName (String anyCase) {
StringBuilder fieldBuilder = new StringBuilder();
LetterState prevState = LetterState.NONE;
int stateCount = 0;
for (int count = 0; count < anyCase.length(); count++) {
LetterState state;
if (Character.isWhitespace(anyCase.charAt(count))) {
state = LetterState.WHITESPACE;
} else if (Character.isDigit(anyCase.charAt(count))) {
state = LetterState.DIGIT;
} else if (Character.isLetter(anyCase.charAt(count))) {
state = Character.isUpperCase(anyCase.charAt(count)) ? LetterState.UPPER_LETTER : LetterState.LOWER_LETTER;
} else {
state = LetterState.OTHER;
}
if (!(state.equals(LetterState.WHITESPACE) || ((count > 0) && (anyCase.charAt(count) == '_') && (fieldBuilder.charAt(fieldBuilder.length() - 1) == '_')))) {
if ((count > 0) && (!state.equals(prevState)) && (anyCase.charAt(count) != '_') && (fieldBuilder.charAt(fieldBuilder.length() - 1) != '_') && (!(prevState.equals(LetterState.UPPER_LETTER) && state.equals(LetterState.LOWER_LETTER)))) {
fieldBuilder.append('_');
}
if (!state.equals(LetterState.OTHER)) {
if (prevState.equals(LetterState.UPPER_LETTER) && state.equals(LetterState.LOWER_LETTER) && stateCount > 0) {
fieldBuilder.insert(fieldBuilder.length() - 1, '_');
}
fieldBuilder.append(state.equals(LetterState.LOWER_LETTER) ? Character.toUpperCase(anyCase.charAt(count)) : anyCase.charAt(count));
}
}
stateCount = prevState.equals(state) ? stateCount + 1 : 0;
prevState = state;
}
return fieldBuilder.toString();
}
private static enum LetterState {NONE, DIGIT, UPPER_LETTER, LOWER_LETTER, WHITESPACE, OTHER}
}