2 * Copyright (C) 2001, 2002 The Mir-coders group
4 * This file is part of Mir.
6 * Mir is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * Mir is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Mir; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * In addition, as a special exception, The Mir-coders gives permission to link
21 * the code of this program with the com.oreilly.servlet library, any library
22 * licensed under the Apache Software License, The Sun (tm) Java Advanced
23 * Imaging library (JAI), The Sun JIMI library (or with modified versions of
24 * the above that use the same license as the above), and distribute linked
25 * combinations including the two. You must obey the GNU General Public
26 * License in all respects for all of the code used other than the above
27 * mentioned libraries. If you modify this file, you may extend this exception
28 * to your version of the file, but you are not obligated to do so. If you do
29 * not wish to do so, delete this exception statement from your version.
32 package mir.generator;
34 import java.util.HashMap;
37 import mir.log.LoggerWrapper;
38 import mir.util.SimpleParser;
40 public class GeneratorLibraryRepository {
41 private Map factories;
42 private LoggerWrapper logger;
44 public GeneratorLibraryRepository() {
45 factories = new HashMap();
46 logger = new LoggerWrapper("TemplateEngine");
49 public void registerLibraryFactory(String aName, Generator.GeneratorLibraryFactory aFactory) {
50 factories.put(aName, aFactory);
53 public Generator.GeneratorLibrary constructLibrary(String aName, String aParameters) throws GeneratorExc {
54 if (!factories.containsKey(aName))
55 throw new GeneratorExc("Unknown library factory: "+aName);
57 return ((Generator.GeneratorLibraryFactory) factories.get(aName)).makeLibrary(aParameters);
60 private final static String SPACE = "[\t\n\r ]*";
61 private final static String IDENTIFIER = "[a-zA-Z_][a-zA-Z0-9_]*";
62 private final static String EQUALS = "=";
63 private final static String LEFT_PARENTHESIS = "[(]";
64 private final static String RIGHT_PARENTHESIS = "[)]";
65 private final static String FACTORY_PARAMETERS = "[^)]*";
66 private final static String SEMICOLON = ";";
68 public Generator.GeneratorLibrary constructCompositeLibrary(String aSpecification) throws GeneratorExc, GeneratorFailure {
71 String factoryParameters;
72 CompositeGeneratorLibrary result = new CompositeGeneratorLibrary();
75 SimpleParser parser = new SimpleParser(aSpecification);
78 while (!parser.isAtEnd()) {
79 identifier = parser.parse(IDENTIFIER, "library key expected");
81 parser.parse(EQUALS, "'=' expected");
83 factory = parser.parse(IDENTIFIER, "factory name expected");
85 parser.parse(LEFT_PARENTHESIS, "'(' expected");
86 factoryParameters = parser.parse(FACTORY_PARAMETERS, "parameters expected");
87 parser.parse(RIGHT_PARENTHESIS, "')' expected");
89 result.addLibrary(identifier, constructLibrary(factory, factoryParameters), first);
93 if (!parser.isAtEnd()) {
94 parser.parse(SEMICOLON, "; expected");
99 e.printStackTrace(logger.asPrintWriter(LoggerWrapper.DEBUG_MESSAGE));
100 throw new GeneratorFailure("Failed to construct generator library: " + e.getMessage(), e);