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()) {
51 boolean lineProcessed = false;
52 for (LINE_TYPE lineType : LINE_TYPE.values()) {
53 lineProcessed = lineType.processLine(currentLine, fc);
59 log.log(Level.SEVERE, "Invalid line in INI file: {0}", currentLine);
62 fc.outputEndSection(fc.lastSection);
69 private void outputStart() throws SAXException {
70 contentHandler.startDocument();
71 contentHandler.lineBreak();
72 contentHandler.startElement(null, null, ROOT_ELEMENT, null);
73 contentHandler.lineBreak();
76 private void outputEnd() throws SAXException {
77 contentHandler.endElement(null, null, "ini");
78 contentHandler.lineBreak();
79 contentHandler.endDocument();
82 private static class FileContext {
84 private final Alt2ContentHandler contentHandler;
85 private String lastSection;
86 private int lineNumber;
88 public FileContext(Alt2ContentHandler contentHandler) {
89 this.contentHandler = contentHandler;
92 protected void outputStartSection(String name) throws SAXException {
93 contentHandler.indentation(1);
94 contentHandler.startElement(null, null, name, null);
95 contentHandler.lineBreak();
98 protected void outputEndSection(String name) throws SAXException {
100 contentHandler.indentation(1);
101 contentHandler.endElement(null, null, name);
102 contentHandler.lineBreak();
107 private static class LineContext {
109 private final Matcher matcher;
111 public LineContext(Matcher matcher) {
112 this.matcher = matcher;
116 private enum LINE_TYPE {
120 public void processLine(LineContext lc, FileContext fc) throws SAXException {
121 log.log(Level.FINEST, "Line {0}: skipping blank line", fc.lineNumber);
124 COMMENT("\\s*(;|#)\\s*(?<comment>.*)") {
126 public void processLine(LineContext lc, FileContext fc) throws SAXException {
127 // TODO: comment → LexicalHandler
128 log.log(Level.FINER, "Line {0}: comment: {1}", new Object[]{fc.lineNumber, lc.matcher.group("comment")});
132 SECTION("\\s*\\[\\s*(?<name>[^\\s\\]]+)\\s*\\]\\s*") {
134 public void processLine(LineContext lc, FileContext fc) throws SAXException {
135 // TODO: escaping for section names with spaces
136 String name = lc.matcher.group("name");
137 fc.outputEndSection(fc.lastSection);
138 fc.outputStartSection(name);
139 fc.lastSection = name;
144 "\\s*(?<key>[^=\\s]+)\\s*=\\s*\"(?<value>[^']+)\"\\s*((;|#)\\s*(?<comment>.*)){0,1}", // quoted value → include spaces + might have comment
145 "\\s*(?<key>[^=\\s]+)\\s*=\\s*'(?<value>[^']+)'\\s*((;|#)\\s*(?<comment>.*)){0,1}", // apostrophed value → include spaces + might have comment
146 "\\s*(?<key>[^=\\s]+)\\s*=\\s*(?<value>.+)" // unquoted value → strip spaces + no comments
149 public void processLine(LineContext lc, FileContext fc) throws SAXException {
150 String key = lc.matcher.group("key");
151 String value = lc.matcher.group("value");
153 if (lc.matcher.groupCount() > 2) {
154 String comment = lc.matcher.group("comment");
155 // TODO: comment → LexicalHandler
156 log.log(Level.FINER, "Line {0}: comment for entry „{1}“ is: {2}", new Object[]{fc.lineNumber, key, comment});
160 fc.contentHandler.indentation(fc.lastSection == null ? 1 : 2);
161 fc.contentHandler.textElement(value, null, null, key, null);
162 fc.contentHandler.lineBreak();
168 private LINE_TYPE(String... patterns) {
169 for (String pattern : patterns) {
170 this.patterns.add(Pattern.compile(pattern));
174 private final List<Pattern> patterns = new ArrayList<>();
176 protected boolean processLine(String currentLine, FileContext fc) throws SAXException {
177 for (Pattern pattern : patterns) {
178 Matcher m = pattern.matcher(currentLine);
180 log.log(Level.FINEST, "Line {0}: pattern „{1}“ matches „{2}“", new Object[]{fc.lineNumber, pattern, currentLine});
181 processLine(new LineContext(m), fc);
188 public abstract void processLine(LineContext lc, FileContext fc) throws SAXException;