| /* |
| * Copyright (C) 2013 The Android Open Source Project |
| * |
| * 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 com.android.tools.idea.templates; |
| |
| import com.android.utils.SdkUtils; |
| import freemarker.template.*; |
| |
| import java.io.IOException; |
| import java.io.StringWriter; |
| import java.util.List; |
| import java.util.Properties; |
| |
| /** Escapes a property value (such that its syntax is valid in a Java properties file */ |
| public class FmEscapePropertyValueMethod implements TemplateMethodModelEx { |
| @Override |
| public TemplateModel exec(List args) throws TemplateModelException { |
| if (args.size() != 1) { |
| throw new TemplateModelException("Wrong arguments"); |
| } |
| |
| // Slow, stupid implementation, but is 100% compatible with Java's property file implementation |
| Properties properties = new Properties(); |
| String value = ((TemplateScalarModel)args.get(0)).getAsString(); |
| properties.setProperty("k", value); // key doesn't matter |
| StringWriter writer = new StringWriter(); |
| String escaped; |
| try { |
| properties.store(writer, null); |
| String s = writer.toString(); |
| int end = s.length(); |
| |
| // Writer inserts trailing newline |
| String lineSeparator = SdkUtils.getLineSeparator(); |
| if (s.endsWith(lineSeparator)) { |
| end -= lineSeparator.length(); |
| } |
| |
| int start = s.indexOf('='); |
| assert start != -1 : s; |
| escaped = s.substring(start + 1, end); |
| } |
| catch (IOException e) { |
| escaped = value; // shouldn't happen; we're not going to disk |
| } |
| |
| return new SimpleScalar(escaped); |
| } |
| } |