LoadingTemplateFactory.java revision 712c262ddf6790c16a8567053f616c71da7e1856 
1/*
2 * Copyright (C) 2010 Google Inc.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.google.clearsilver.jsilver.interpreter;
18
19import com.google.clearsilver.jsilver.autoescape.EscapeMode;
20import com.google.clearsilver.jsilver.exceptions.JSilverIOException;
21import com.google.clearsilver.jsilver.resourceloader.ResourceLoader;
22import com.google.clearsilver.jsilver.syntax.SyntaxTreeBuilder;
23import com.google.clearsilver.jsilver.syntax.TemplateSyntaxTree;
24
25import java.io.IOException;
26import java.io.Reader;
27import java.io.StringReader;
28
29/**
30 * Loads a template from disk, and parses it into an AST. Does not do any caching.
31 */
32public class LoadingTemplateFactory implements TemplateFactory {
33
34  private final SyntaxTreeBuilder syntaxTreeBuilder = new SyntaxTreeBuilder();
35
36  public TemplateSyntaxTree find(String templateName, ResourceLoader resourceLoader,
37      EscapeMode escapeMode) {
38    try {
39      Reader reader = resourceLoader.openOrFail(templateName);
40      try {
41        return syntaxTreeBuilder.parse(reader, templateName, escapeMode);
42      } finally {
43        reader.close();
44      }
45    } catch (IOException e) {
46      throw new JSilverIOException(e);
47    }
48  }
49
50  public TemplateSyntaxTree createTemp(String content, EscapeMode escapeMode) {
51    return syntaxTreeBuilder.parse(new StringReader(content), "", escapeMode);
52  }
53
54}
55