3 * Copyright © 2014 František Kučera (frantovo.cz)
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 package cz.frantovo.alt2xml.in.ini;
20 import cz.frantovo.alt2xml.AbstractAlt2XmlReader;
21 import cz.frantovo.alt2xml.in.Alt2ContentHandler;
22 import java.io.BufferedReader;
23 import java.io.IOException;
24 import java.io.InputStreamReader;
25 import java.util.ArrayList;
26 import java.util.List;
27 import java.util.logging.Level;
28 import java.util.logging.Logger;
29 import java.util.regex.Matcher;
30 import java.util.regex.Pattern;
31 import org.xml.sax.InputSource;
32 import org.xml.sax.SAXException;
36 * @author Ing. František Kučera (frantovo.cz)
38 public class Reader extends AbstractAlt2XmlReader {
40 public static final String ROOT_ELEMENT = "ini";
41 private static final Logger log = Logger.getLogger(Reader.class.getName());
44 public void parse(InputSource input) throws IOException, SAXException {
47 try (BufferedReader br = new BufferedReader(new InputStreamReader(input.getByteStream()))) {
48 FileContext fc = new FileContext(contentHandler);
49 for (String currentLine = br.readLine(); currentLine != null; currentLine = br.readLine()) {
50 for (LINE_TYPE lineType : LINE_TYPE.values()) {
51 boolean lineProcessed = lineType.processLine(currentLine, fc);
57 fc.outputEndSection(fc.lastSection);
64 private void outputStart() throws SAXException {
65 contentHandler.startDocument();
66 contentHandler.lineBreak();
67 contentHandler.startElement(null, null, ROOT_ELEMENT, null);
68 contentHandler.lineBreak();
71 private void outputEnd() throws SAXException {
72 contentHandler.endElement(null, null, "ini");
73 contentHandler.lineBreak();
74 contentHandler.endDocument();
77 private static class FileContext {
79 private final Alt2ContentHandler contentHandler;
80 private String lastSection;
82 public FileContext(Alt2ContentHandler contentHandler) {
83 this.contentHandler = contentHandler;
86 protected void outputStartSection(String name) throws SAXException {
87 contentHandler.indentation(1);
88 contentHandler.startElement(null, null, name, null);
89 contentHandler.lineBreak();
92 protected void outputEndSection(String name) throws SAXException {
94 contentHandler.indentation(1);
95 contentHandler.endElement(null, null, name);
96 contentHandler.lineBreak();
101 private static class LineContext {
103 private final Matcher matcher;
105 public LineContext(Matcher matcher) {
106 this.matcher = matcher;
110 private enum LINE_TYPE {
112 COMMENT("\\s*(;|#)\\s*(?<comment>.*)") {
114 public void processLine(LineContext lc, FileContext fc) throws SAXException {
115 // TODO: comment → LexicalHandler
116 log.log(Level.FINER, "Comment: {0}", lc.matcher.group("comment"));
120 SECTION("\\s*\\[\\s*(?<name>[^\\s\\]]+)\\s*\\]\\s*") {
122 public void processLine(LineContext lc, FileContext fc) throws SAXException {
123 String name = lc.matcher.group("name");
124 fc.outputEndSection(fc.lastSection);
125 fc.outputStartSection(name);
126 fc.lastSection = name;
131 "\\s*(?<key>[^=\\s]+)\\s*=\\s*\"(?<value>[^']+)\"\\s*((;|#)\\s*(?<comment>.*)){0,1}", // quoted value → include spaces + might have comment
132 "\\s*(?<key>[^=\\s]+)\\s*=\\s*'(?<value>[^']+)'\\s*((;|#)\\s*(?<comment>.*)){0,1}", // apostrophed value → include spaces + might have comment
133 "\\s*(?<key>[^=\\s]+)\\s*=\\s*(?<value>.+)" // unquoted value → strip spaces + no comments
136 public void processLine(LineContext lc, FileContext fc) throws SAXException {
137 String key = lc.matcher.group("key");
138 String value = lc.matcher.group("value");
140 if (lc.matcher.groupCount() > 2) {
141 String comment = lc.matcher.group("comment");
142 // TODO: comment → LexicalHandler
143 log.log(Level.FINER, "Comment for entry „{0}“ is: {1}", new Object[]{key, comment});
147 fc.contentHandler.indentation(fc.lastSection == null ? 1 : 2);
148 fc.contentHandler.textElement(value, null, null, key, null);
149 fc.contentHandler.lineBreak();
155 private LINE_TYPE(String... patterns) {
156 for (String pattern : patterns) {
157 this.patterns.add(Pattern.compile(pattern));
161 private final List<Pattern> patterns = new ArrayList<>();
163 protected boolean processLine(String currentLine, FileContext fileContext) throws SAXException {
164 for (Pattern pattern : patterns) {
165 Matcher m = pattern.matcher(currentLine);
167 log.log(Level.FINEST, "Line „{0}“ matches pattern „{1}“", new Object[]{currentLine, pattern});
168 processLine(new LineContext(m), fileContext);
175 public abstract void processLine(LineContext lc, FileContext fc) throws SAXException;