Mercurial > jhg

comparison hg4j/src/main/java/org/tmatesoft/hg/internal/ConfigFile.java @ 213:6ec4af642ba8 gradle

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Project uses Gradle for build - actual changes
author Alexander Kitaev <kitaev@gmail.com>
date Tue, 10 May 2011 10:52:53 +0200
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212:edb2e2829352 213:6ec4af642ba8
1 /*
2 * Copyright (c) 2011 TMate Software Ltd
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * For information on how to redistribute this software under
14 * the terms of a license other than GNU General Public License
15 * contact TMate Software at support@hg4j.com
16 */
17 package org.tmatesoft.hg.internal;
18
19 import java.io.BufferedReader;
20 import java.io.File;
21 import java.io.FileReader;
22 import java.io.IOException;
23 import java.util.ArrayList;
24 import java.util.Collections;
25 import java.util.LinkedHashMap;
26 import java.util.List;
27 import java.util.Map;
28
29 /**
30 *
31 * @author Artem Tikhomirov
32 * @author TMate Software Ltd.
33 */
34 public class ConfigFile {
35
36 private List<String> sections;
37 private List<Map<String,String>> content;
38
39 ConfigFile() {
40 }
41
42 public void addLocation(File path) {
43 read(path);
44 }
45
46 public boolean hasSection(String sectionName) {
47 return sections == null ? false : sections.indexOf(sectionName) == -1;
48 }
49
50 // XXX perhaps, should be moved to subclass HgRepoConfig, as it is not common operation for any config file
51 public boolean hasEnabledExtension(String extensionName) {
52 int x = sections != null ? sections.indexOf("extensions") : -1;
53 if (x == -1) {
54 return false;
55 }
56 String value = content.get(x).get(extensionName);
57 return value != null && !"!".equals(value);
58 }
59
60 public List<String> getSectionNames() {
61 return sections == null ? Collections.<String>emptyList() : Collections.unmodifiableList(sections);
62 }
63
64 public Map<String,String> getSection(String sectionName) {
65 if (sections == null) {
66 return Collections.emptyMap();
67 }
68 int x = sections.indexOf(sectionName);
69 if (x == -1) {
70 return Collections.emptyMap();
71 }
72 return Collections.unmodifiableMap(content.get(x));
73 }
74
75 public boolean getBoolean(String sectionName, String key, boolean defaultValue) {
76 String value = getSection(sectionName).get(key);
77 if (value == null) {
78 return defaultValue;
79 }
80 for (String s : new String[] { "true", "yes", "on", "1" }) {
81 if (s.equalsIgnoreCase(value)) {
82 return true;
83 }
84 }
85 return false;
86 }
87
88 public String getString(String sectionName, String key, String defaultValue) {
89 String value = getSection(sectionName).get(key);
90 return value == null ? defaultValue : value;
91 }
92
93 // TODO handle %include and %unset directives
94 // TODO "" and lists
95 private void read(File f) {
96 if (f == null || !f.canRead()) {
97 return;
98 }
99 if (sections == null) {
100 sections = new ArrayList<String>();
101 content = new ArrayList<Map<String,String>>();
102 }
103 try {
104 BufferedReader br = new BufferedReader(new FileReader(f));
105 String line;
106 String sectionName = "";
107 Map<String,String> section = new LinkedHashMap<String, String>();
108 while ((line = br.readLine()) != null) {
109 line = line.trim();
110 int x;
111 if ((x = line.indexOf('#')) != -1) {
112 // do not keep comments in memory, get new, shorter string
113 line = new String(line.substring(0, x).trim());
114 }
115 if (line.length() <= 2) { // a=b or [a] are at least of length 3
116 continue;
117 }
118 if (line.charAt(0) == '[' && line.charAt(line.length() - 1) == ']') {
119 sectionName = line.substring(1, line.length() - 1);
120 if (sections.indexOf(sectionName) == -1) {
121 sections.add(sectionName);
122 content.add(section = new LinkedHashMap<String, String>());
123 } else {
124 section = null; // drop cached value
125 }
126 } else if ((x = line.indexOf('=')) != -1) {
127 // share char[] of the original string
128 String key = line.substring(0, x).trim();
129 String value = line.substring(x+1).trim();
130 if (section == null) {
131 int i = sections.indexOf(sectionName);
132 assert i >= 0;
133 section = content.get(i);
134 }
135 if (sectionName.length() == 0) {
136 // add fake section only if there are any values
137 sections.add(sectionName);
138 content.add(section);
139 }
140 section.put(key, value);
141 }
142 }
143 br.close();
144 } catch (IOException ex) {
145 ex.printStackTrace(); // XXX shall outer world care?
146 }
147 ((ArrayList<?>) sections).trimToSize();
148 ((ArrayList<?>) content).trimToSize();
149 assert sections.size() == content.size();
150 }
151 }