| /******************************************************************************* |
| * Copyright (c) 2015 Christian Pontesegger and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * Contributors: |
| * Christian Pontesegger - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.ease.lang.ruby; |
| |
| import java.util.regex.Pattern; |
| |
| public class RubyHelper { |
| |
| public static boolean isSaveName(final String identifier) { |
| return Pattern.matches("[a-zA-Z_$][a-zA-Z0-9_]*", identifier); |
| } |
| |
| public static String getSaveName(final String identifier) { |
| // check if name is already valid |
| if (isSaveName(identifier)) |
| return identifier; |
| |
| // not valid, convert string to valid format |
| final StringBuilder buffer = new StringBuilder(identifier.replaceAll("[^a-zA-Z0-9]", "_")); |
| |
| // remove '_' at the beginning |
| while ((buffer.length() > 0) && (buffer.charAt(0) == '_')) |
| buffer.deleteCharAt(0); |
| |
| // remove trailing '_' |
| while ((buffer.length() > 0) && (buffer.charAt(buffer.length() - 1) == '_')) |
| buffer.deleteCharAt(buffer.length() - 1); |
| |
| // check for valid first character |
| if (buffer.length() > 0) { |
| final char start = buffer.charAt(0); |
| if ((start < 65) || ((start > 90) && (start < 97)) || (start > 122)) |
| buffer.insert(0, '_'); |
| } else |
| // buffer is empty |
| buffer.insert(0, '_'); |
| |
| return buffer.toString(); |
| } |
| } |
