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08fe2e33 NR |
1 | package be.nikiroo.fanfix; |
2 | ||
3 | import java.io.File; | |
4 | import java.io.IOException; | |
5 | ||
6 | import be.nikiroo.fanfix.bundles.Config; | |
7 | import be.nikiroo.fanfix.bundles.ConfigBundle; | |
8 | import be.nikiroo.fanfix.bundles.StringIdBundle; | |
9 | import be.nikiroo.utils.resources.Bundles; | |
10 | ||
11 | /** | |
12 | * Global state for the program (services and singletons). | |
13 | * | |
14 | * @author niki | |
15 | */ | |
16 | public class Instance { | |
17 | private static ConfigBundle config; | |
18 | private static StringIdBundle trans; | |
19 | private static Cache cache; | |
20 | private static Library lib; | |
21 | private static boolean debug; | |
22 | private static File coverDir; | |
3727aae2 | 23 | private static File readerTmp; |
08fe2e33 NR |
24 | |
25 | static { | |
948637bc | 26 | // Most of the rest is dependent upon this: |
08fe2e33 NR |
27 | config = new ConfigBundle(); |
28 | ||
fe999aa4 NR |
29 | String configDir = System.getenv("CONFIG_DIR"); |
30 | if (configDir == null) { | |
31 | configDir = new File(System.getProperty("user.home"), ".fanfix") | |
32 | .getPath(); | |
33 | } | |
34 | if (configDir != null) { | |
35 | if (!new File(configDir).exists()) { | |
36 | new File(configDir).mkdirs(); | |
37 | } else { | |
38 | Bundles.setDirectory(configDir); | |
39 | } | |
40 | ||
41 | try { | |
42 | config = new ConfigBundle(); | |
43 | config.updateFile(configDir); | |
44 | } catch (IOException e) { | |
45 | syserr(e); | |
46 | } | |
47 | try { | |
48 | trans = new StringIdBundle(getLang()); | |
49 | trans.updateFile(configDir); | |
50 | } catch (IOException e) { | |
51 | syserr(e); | |
52 | } | |
53 | ||
54 | Bundles.setDirectory(configDir); | |
55 | } | |
56 | ||
08fe2e33 | 57 | trans = new StringIdBundle(getLang()); |
68686a37 NR |
58 | try { |
59 | lib = new Library(getFile(Config.LIBRARY_DIR)); | |
60 | } catch (Exception e) { | |
61 | syserr(new IOException("Cannot create library for directory: " | |
62 | + getFile(Config.LIBRARY_DIR), e)); | |
63 | } | |
64 | ||
08fe2e33 NR |
65 | debug = Instance.getConfig().getBoolean(Config.DEBUG_ERR, false); |
66 | coverDir = getFile(Config.DEFAULT_COVERS_DIR); | |
3727aae2 NR |
67 | File tmp = getFile(Config.CACHE_DIR); |
68 | readerTmp = getFile(Config.CACHE_DIR_LOCAL_READER); | |
69 | ||
d0114000 NR |
70 | if (checkEnv("NOUTF")) { |
71 | trans.setUnicode(false); | |
72 | } | |
73 | ||
74 | if (checkEnv("DEBUG")) { | |
75 | debug = true; | |
76 | } | |
77 | ||
3727aae2 NR |
78 | if (tmp == null || readerTmp == null) { |
79 | String tmpDir = System.getProperty("java.io.tmpdir"); | |
80 | if (tmpDir != null) { | |
81 | if (tmp == null) { | |
82 | tmp = new File(tmpDir, "fanfic-tmp"); | |
83 | } | |
84 | if (readerTmp == null) { | |
7de079f1 | 85 | readerTmp = new File(tmpDir, "fanfic-reader"); |
3727aae2 NR |
86 | } |
87 | } else { | |
88 | syserr(new IOException( | |
89 | "The system does not have a default temporary directory")); | |
90 | } | |
91 | } | |
08fe2e33 NR |
92 | |
93 | if (coverDir != null && !coverDir.exists()) { | |
94 | syserr(new IOException( | |
95 | "The 'default covers' directory does not exists: " | |
96 | + coverDir)); | |
97 | coverDir = null; | |
98 | } | |
08fe2e33 | 99 | |
08fe2e33 | 100 | try { |
08fe2e33 NR |
101 | String ua = config.getString(Config.USER_AGENT); |
102 | int hours = config.getInteger(Config.CACHE_MAX_TIME_CHANGING, -1); | |
103 | int hoursLarge = config | |
104 | .getInteger(Config.CACHE_MAX_TIME_STABLE, -1); | |
105 | ||
08fe2e33 NR |
106 | cache = new Cache(tmp, ua, hours, hoursLarge); |
107 | } catch (IOException e) { | |
108 | syserr(new IOException( | |
109 | "Cannot create cache (will continue without cache)", e)); | |
110 | } | |
111 | } | |
112 | ||
113 | /** | |
114 | * Get the (unique) configuration service for the program. | |
115 | * | |
116 | * @return the configuration service | |
117 | */ | |
118 | public static ConfigBundle getConfig() { | |
119 | return config; | |
120 | } | |
121 | ||
122 | /** | |
123 | * Get the (unique) {@link Cache} for the program. | |
124 | * | |
125 | * @return the {@link Cache} | |
126 | */ | |
127 | public static Cache getCache() { | |
128 | return cache; | |
129 | } | |
130 | ||
131 | /** | |
132 | * Get the (unique) {link StringIdBundle} for the program. | |
133 | * | |
134 | * @return the {link StringIdBundle} | |
135 | */ | |
136 | public static StringIdBundle getTrans() { | |
137 | return trans; | |
138 | } | |
139 | ||
140 | /** | |
141 | * Get the (unique) {@link Library} for the program. | |
142 | * | |
143 | * @return the {@link Library} | |
144 | */ | |
145 | public static Library getLibrary() { | |
146 | return lib; | |
147 | } | |
148 | ||
149 | /** | |
150 | * Return the directory where to look for default cover pages. | |
151 | * | |
152 | * @return the default covers directory | |
153 | */ | |
154 | public static File getCoverDir() { | |
155 | return coverDir; | |
156 | } | |
157 | ||
3727aae2 NR |
158 | /** |
159 | * Return the directory where to store temporary files for the local reader. | |
160 | * | |
161 | * @return the directory | |
162 | */ | |
163 | public static File getReaderDir() { | |
164 | return readerTmp; | |
165 | } | |
166 | ||
08fe2e33 NR |
167 | /** |
168 | * Report an error to the user | |
169 | * | |
170 | * @param e | |
171 | * the {@link Exception} to report | |
172 | */ | |
173 | public static void syserr(Exception e) { | |
174 | if (debug) { | |
175 | e.printStackTrace(); | |
176 | } else { | |
177 | System.err.println(e.getMessage()); | |
178 | } | |
179 | } | |
180 | ||
181 | /** | |
182 | * Return a path, but support the special $HOME variable. | |
183 | * | |
184 | * @return the path | |
185 | */ | |
186 | private static File getFile(Config id) { | |
187 | File file = null; | |
188 | String path = config.getString(id); | |
189 | if (path != null && !path.isEmpty()) { | |
190 | path = path.replace('/', File.separatorChar); | |
191 | if (path.contains("$HOME")) { | |
192 | path = path.replace("$HOME", | |
193 | "" + System.getProperty("user.home")); | |
194 | } | |
195 | ||
196 | file = new File(path); | |
197 | } | |
198 | ||
199 | return file; | |
200 | } | |
201 | ||
202 | /** | |
203 | * The language to use for the application (NULL = default system language). | |
204 | * | |
205 | * @return the language | |
206 | */ | |
207 | private static String getLang() { | |
208 | String lang = config.getString(Config.LANG); | |
209 | ||
210 | if (System.getenv("LANG") != null && !System.getenv("LANG").isEmpty()) { | |
211 | lang = System.getenv("LANG"); | |
212 | } | |
213 | ||
214 | if (lang != null && lang.isEmpty()) { | |
215 | lang = null; | |
216 | } | |
217 | ||
218 | return lang; | |
219 | } | |
d0114000 NR |
220 | |
221 | /** | |
222 | * Check that the given environment variable is "enabled". | |
223 | * | |
224 | * @param key | |
225 | * the variable to check | |
226 | * | |
227 | * @return TRUE if it is | |
228 | */ | |
229 | private static boolean checkEnv(String key) { | |
230 | String value = System.getenv(key); | |
231 | if (value != null) { | |
232 | value = value.trim().toLowerCase(); | |
233 | if ("yes".equals(value) || "true".equals(value) | |
234 | || "on".equals(value) || "1".equals(value) | |
235 | || "y".equals(value)) { | |
236 | return true; | |
237 | } | |
238 | } | |
239 | ||
240 | return false; | |
241 | } | |
08fe2e33 | 242 | } |