| /* |
| * Copyright 2007 Sascha Weinreuter |
| * |
| * 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. |
| */ |
| |
| package org.intellij.plugins.relaxNG.compact.psi.util; |
| |
| import com.intellij.lang.ASTNode; |
| import com.intellij.psi.PsiElement; |
| import org.intellij.plugins.relaxNG.compact.RncTokenTypes; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * Created by IntelliJ IDEA. |
| * User: sweinreuter |
| * Date: 13.08.2007 |
| */ |
| public class EscapeUtil { |
| @SuppressWarnings({ "SSBasedInspection" }) |
| public static String unescapeText(@NotNull PsiElement element) { |
| final ASTNode node = element.getNode(); |
| if (node != null) { |
| return unescapeText(node); |
| } else { |
| return element.getText(); |
| } |
| } |
| |
| @SuppressWarnings({ "SSBasedInspection" }) |
| public static String unescapeText(@NotNull ASTNode node) { |
| final String text = node.getText(); |
| |
| // TODO: unescape \x{xx} sequences |
| |
| if (node.getElementType() == RncTokenTypes.ESCAPED_IDENTIFIER) { |
| assert text.charAt(0) == '\\'; |
| return text.length() > 1 ? text.substring(1) : ""; |
| } else { |
| return text; |
| } |
| } |
| |
| public static String parseLiteralValue(ASTNode ns) { |
| return unquote(unescapeText(ns)); |
| } |
| |
| private static String unquote(String s) { |
| if (s.length() >= 6 && s.charAt(0) == s.charAt(1)) { |
| s = s.replace('\u0000', '\n'); |
| return s.substring(3, s.length() - 3); |
| } else { |
| return s.substring(1, s.length() - 1); |
| } |
| } |
| } |