Commit | Line | Data |
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db31c358 NR |
1 | package be.nikiroo.utils.serial; |
2 | ||
564bbbdb | 3 | import java.io.ByteArrayInputStream; |
e570f7eb | 4 | import java.io.IOException; |
68532958 | 5 | import java.io.InputStream; |
db31c358 | 6 | import java.io.NotSerializableException; |
68532958 NR |
7 | import java.io.OutputStream; |
8 | import java.io.UnsupportedEncodingException; | |
ce0974c4 | 9 | import java.lang.reflect.Array; |
8c8da42a | 10 | import java.lang.reflect.Constructor; |
db31c358 | 11 | import java.lang.reflect.Field; |
e570f7eb | 12 | import java.lang.reflect.Modifier; |
f4053377 | 13 | import java.net.URL; |
72648e75 | 14 | import java.util.ArrayList; |
db31c358 | 15 | import java.util.HashMap; |
72648e75 | 16 | import java.util.List; |
db31c358 | 17 | import java.util.Map; |
ce0974c4 | 18 | import java.util.UnknownFormatConversionException; |
db31c358 | 19 | |
dc41a952 | 20 | import be.nikiroo.utils.IOUtils; |
80500544 | 21 | import be.nikiroo.utils.Image; |
52fb9a56 NR |
22 | import be.nikiroo.utils.streams.NextableInputStream; |
23 | import be.nikiroo.utils.streams.NextableInputStreamStep; | |
dc41a952 | 24 | import be.nikiroo.utils.StringUtils; |
e570f7eb | 25 | |
db31c358 | 26 | /** |
8c8da42a | 27 | * Small class to help with serialisation. |
db31c358 NR |
28 | * <p> |
29 | * Note that we do not support inner classes (but we do support nested classes) | |
30 | * and all objects require an empty constructor to be deserialised. | |
5bc55b51 NR |
31 | * <p> |
32 | * It is possible to add support to custom types (both the encoder and the | |
33 | * decoder will require the custom classes) -- see {@link CustomSerializer}. | |
34 | * <p> | |
35 | * Default supported types are: | |
36 | * <ul> | |
37 | * <li>NULL (as a null value)</li> | |
38 | * <li>String</li> | |
39 | * <li>Boolean</li> | |
40 | * <li>Byte</li> | |
41 | * <li>Character</li> | |
42 | * <li>Short</li> | |
43 | * <li>Long</li> | |
44 | * <li>Float</li> | |
45 | * <li>Double</li> | |
46 | * <li>Integer</li> | |
47 | * <li>Enum (any enum whose name and value is known by the caller)</li> | |
48 | * <li>java.awt.image.BufferedImage (as a {@link CustomSerializer})</li> | |
49 | * <li>An array of the above (as a {@link CustomSerializer})</li> | |
f4053377 | 50 | * <li>URL</li> |
5bc55b51 | 51 | * </ul> |
db31c358 NR |
52 | * |
53 | * @author niki | |
54 | */ | |
aad14586 | 55 | public class SerialUtils { |
db31c358 NR |
56 | private static Map<String, CustomSerializer> customTypes; |
57 | ||
58 | static { | |
59 | customTypes = new HashMap<String, CustomSerializer>(); | |
ce0974c4 NR |
60 | |
61 | // Array types: | |
62 | customTypes.put("[]", new CustomSerializer() { | |
63 | @Override | |
143a64f4 NR |
64 | protected void toStream(OutputStream out, Object value) |
65 | throws IOException { | |
dc41a952 NR |
66 | // TODO: we use \n to separate, and b64 to un-\n -- but we could |
67 | // use \\n ? | |
ce0974c4 NR |
68 | String type = value.getClass().getCanonicalName(); |
69 | type = type.substring(0, type.length() - 2); // remove the [] | |
70 | ||
dc41a952 | 71 | write(out, type); |
4d319565 | 72 | write(out, "\r"); |
ce0974c4 NR |
73 | try { |
74 | for (int i = 0; true; i++) { | |
75 | Object item = Array.get(value, i); | |
76 | // encode it normally if direct value | |
143a64f4 | 77 | if (!SerialUtils.encode(out, item)) { |
ce0974c4 | 78 | try { |
4d319565 NR |
79 | // TODO: bad escaping? |
80 | write(out, "B64:"); | |
81 | OutputStream bout = StringUtils.base64(out, | |
82 | false, false); | |
83 | new Exporter(bout).append(item); | |
ce0974c4 NR |
84 | } catch (NotSerializableException e) { |
85 | throw new UnknownFormatConversionException(e | |
86 | .getMessage()); | |
87 | } | |
88 | } | |
4d319565 | 89 | write(out, "\r"); |
ce0974c4 NR |
90 | } |
91 | } catch (ArrayIndexOutOfBoundsException e) { | |
92 | // Done. | |
93 | } | |
ce0974c4 NR |
94 | } |
95 | ||
143a64f4 NR |
96 | @Override |
97 | protected Object fromStream(InputStream in) throws IOException { | |
dc41a952 | 98 | NextableInputStream stream = new NextableInputStream(in, |
4d319565 | 99 | new NextableInputStreamStep('\r')); |
ce0974c4 NR |
100 | |
101 | try { | |
dc41a952 NR |
102 | List<Object> list = new ArrayList<Object>(); |
103 | stream.next(); | |
104 | String type = IOUtils.readSmallStream(stream); | |
105 | ||
106 | while (stream.next()) { | |
107 | Object value = new Importer().read(stream).getValue(); | |
108 | list.add(value); | |
109 | } | |
110 | ||
ce0974c4 | 111 | Object array = Array.newInstance( |
dc41a952 NR |
112 | SerialUtils.getClass(type), list.size()); |
113 | for (int i = 0; i < list.size(); i++) { | |
114 | Array.set(array, i, list.get(i)); | |
ce0974c4 NR |
115 | } |
116 | ||
117 | return array; | |
118 | } catch (Exception e) { | |
452f38c8 NR |
119 | if (e instanceof IOException) { |
120 | throw (IOException) e; | |
121 | } | |
122 | throw new IOException(e.getMessage()); | |
ce0974c4 NR |
123 | } |
124 | } | |
dc41a952 NR |
125 | |
126 | @Override | |
127 | protected String getType() { | |
128 | return "[]"; | |
129 | } | |
ce0974c4 | 130 | }); |
e570f7eb | 131 | |
f4053377 NR |
132 | // URL: |
133 | customTypes.put("java.net.URL", new CustomSerializer() { | |
134 | @Override | |
dc41a952 NR |
135 | protected void toStream(OutputStream out, Object value) |
136 | throws IOException { | |
137 | String val = ""; | |
f4053377 | 138 | if (value != null) { |
dc41a952 | 139 | val = ((URL) value).toString(); |
f4053377 | 140 | } |
dc41a952 NR |
141 | |
142 | out.write(val.getBytes("UTF-8")); | |
f4053377 NR |
143 | } |
144 | ||
145 | @Override | |
dc41a952 NR |
146 | protected Object fromStream(InputStream in) throws IOException { |
147 | String val = IOUtils.readSmallStream(in); | |
148 | if (!val.isEmpty()) { | |
149 | return new URL(val); | |
f4053377 | 150 | } |
dc41a952 | 151 | |
f4053377 NR |
152 | return null; |
153 | } | |
154 | ||
155 | @Override | |
156 | protected String getType() { | |
157 | return "java.net.URL"; | |
158 | } | |
159 | }); | |
160 | ||
e570f7eb | 161 | // Images (this is currently the only supported image type by default) |
80500544 | 162 | customTypes.put("be.nikiroo.utils.Image", new CustomSerializer() { |
e570f7eb | 163 | @Override |
dc41a952 NR |
164 | protected void toStream(OutputStream out, Object value) |
165 | throws IOException { | |
166 | Image img = (Image) value; | |
167 | OutputStream encoded = StringUtils.base64(out, false, false); | |
168 | try { | |
169 | InputStream in = img.newInputStream(); | |
170 | try { | |
171 | IOUtils.write(in, encoded); | |
172 | } finally { | |
173 | in.close(); | |
174 | } | |
175 | } finally { | |
176 | encoded.close(); | |
177 | } | |
e570f7eb NR |
178 | } |
179 | ||
180 | @Override | |
181 | protected String getType() { | |
80500544 | 182 | return "be.nikiroo.utils.Image"; |
e570f7eb NR |
183 | } |
184 | ||
185 | @Override | |
dc41a952 | 186 | protected Object fromStream(InputStream in) throws IOException { |
e570f7eb | 187 | try { |
dc41a952 | 188 | return new Image(in); |
e570f7eb NR |
189 | } catch (IOException e) { |
190 | throw new UnknownFormatConversionException(e.getMessage()); | |
191 | } | |
192 | } | |
193 | }); | |
db31c358 | 194 | } |
8c8da42a | 195 | |
aad14586 NR |
196 | /** |
197 | * Create an empty object of the given type. | |
198 | * | |
199 | * @param type | |
200 | * the object type (its class name) | |
201 | * | |
202 | * @return the new object | |
203 | * | |
8c8da42a NR |
204 | * @throws ClassNotFoundException |
205 | * if the class cannot be found | |
206 | * @throws NoSuchMethodException | |
207 | * if the given class is not compatible with this code | |
aad14586 | 208 | */ |
8c8da42a NR |
209 | public static Object createObject(String type) |
210 | throws ClassNotFoundException, NoSuchMethodException { | |
aad14586 | 211 | |
72648e75 | 212 | String desc = null; |
aad14586 NR |
213 | try { |
214 | Class<?> clazz = getClass(type); | |
aad14586 | 215 | String className = clazz.getName(); |
72648e75 NR |
216 | List<Object> args = new ArrayList<Object>(); |
217 | List<Class<?>> classes = new ArrayList<Class<?>>(); | |
aad14586 NR |
218 | Constructor<?> ctor = null; |
219 | if (className.contains("$")) { | |
72648e75 NR |
220 | for (String parentName = className.substring(0, |
221 | className.lastIndexOf('$'));; parentName = parentName | |
949445ee | 222 | .substring(0, parentName.lastIndexOf('$'))) { |
72648e75 NR |
223 | Object parent = createObject(parentName); |
224 | args.add(parent); | |
225 | classes.add(parent.getClass()); | |
949445ee | 226 | |
72648e75 NR |
227 | if (!parentName.contains("$")) { |
228 | break; | |
229 | } | |
230 | } | |
231 | ||
232 | // Better error description in case there is no empty | |
233 | // constructor: | |
234 | desc = ""; | |
235 | String end = ""; | |
236 | for (Class<?> parent = clazz; parent != null | |
237 | && !parent.equals(Object.class); parent = parent | |
949445ee | 238 | .getSuperclass()) { |
72648e75 NR |
239 | if (!desc.isEmpty()) { |
240 | desc += " [:"; | |
241 | end += "]"; | |
242 | } | |
243 | desc += parent; | |
244 | } | |
245 | desc += end; | |
246 | // | |
247 | ||
cd26ee07 NR |
248 | try { |
249 | ctor = clazz.getDeclaredConstructor(classes | |
250 | .toArray(new Class[] {})); | |
251 | } catch (NoSuchMethodException nsme) { | |
564bbbdb | 252 | // TODO: it seems we do not always need a parameter for each |
cd26ee07 NR |
253 | // level, so we currently try "ALL" levels or "FIRST" level |
254 | // only -> we should check the actual rule and use it | |
255 | ctor = clazz.getDeclaredConstructor(classes.get(0)); | |
256 | Object firstParent = args.get(0); | |
257 | args.clear(); | |
258 | args.add(firstParent); | |
259 | } | |
72648e75 | 260 | desc = null; |
aad14586 | 261 | } else { |
aad14586 NR |
262 | ctor = clazz.getDeclaredConstructor(); |
263 | } | |
264 | ||
265 | ctor.setAccessible(true); | |
72648e75 | 266 | return ctor.newInstance(args.toArray()); |
8c8da42a NR |
267 | } catch (ClassNotFoundException e) { |
268 | throw e; | |
aad14586 | 269 | } catch (NoSuchMethodException e) { |
72648e75 | 270 | if (desc != null) { |
949445ee NR |
271 | throw new NoSuchMethodException("Empty constructor not found: " |
272 | + desc); | |
72648e75 | 273 | } |
8c8da42a NR |
274 | throw e; |
275 | } catch (Exception e) { | |
276 | throw new NoSuchMethodException("Cannot instantiate: " + type); | |
aad14586 | 277 | } |
aad14586 | 278 | } |
db31c358 | 279 | |
8c8da42a NR |
280 | /** |
281 | * Insert a custom serialiser that will take precedence over the default one | |
282 | * or the target class. | |
283 | * | |
284 | * @param serializer | |
285 | * the custom serialiser | |
286 | */ | |
db31c358 NR |
287 | static public void addCustomSerializer(CustomSerializer serializer) { |
288 | customTypes.put(serializer.getType(), serializer); | |
289 | } | |
290 | ||
8c8da42a | 291 | /** |
68532958 | 292 | * Serialise the given object into this {@link OutputStream}. |
8c8da42a NR |
293 | * <p> |
294 | * <b>Important: </b>If the operation fails (with a | |
295 | * {@link NotSerializableException}), the {@link StringBuilder} will be | |
296 | * corrupted (will contain bad, most probably not importable data). | |
297 | * | |
68532958 NR |
298 | * @param out |
299 | * the output {@link OutputStream} to serialise to | |
8c8da42a NR |
300 | * @param o |
301 | * the object to serialise | |
302 | * @param map | |
303 | * the map of already serialised objects (if the given object or | |
304 | * one of its descendant is already present in it, only an ID | |
305 | * will be serialised) | |
306 | * | |
307 | * @throws NotSerializableException | |
308 | * if the object cannot be serialised (in this case, the | |
309 | * {@link StringBuilder} can contain bad, most probably not | |
310 | * importable data) | |
68532958 NR |
311 | * @throws IOException |
312 | * in case of I/O errors | |
8c8da42a | 313 | */ |
68532958 NR |
314 | static void append(OutputStream out, Object o, Map<Integer, Object> map) |
315 | throws NotSerializableException, IOException { | |
db31c358 NR |
316 | |
317 | Field[] fields = new Field[] {}; | |
318 | String type = ""; | |
319 | String id = "NULL"; | |
320 | ||
321 | if (o != null) { | |
322 | int hash = System.identityHashCode(o); | |
323 | fields = o.getClass().getDeclaredFields(); | |
324 | type = o.getClass().getCanonicalName(); | |
325 | if (type == null) { | |
72648e75 NR |
326 | // Anonymous inner classes support |
327 | type = o.getClass().getName(); | |
db31c358 NR |
328 | } |
329 | id = Integer.toString(hash); | |
330 | if (map.containsKey(hash)) { | |
331 | fields = new Field[] {}; | |
332 | } else { | |
333 | map.put(hash, o); | |
334 | } | |
335 | } | |
336 | ||
68532958 NR |
337 | write(out, "{\nREF "); |
338 | write(out, type); | |
339 | write(out, "@"); | |
340 | write(out, id); | |
341 | write(out, ":"); | |
342 | ||
343 | if (!encode(out, o)) { // check if direct value | |
ce0974c4 NR |
344 | try { |
345 | for (Field field : fields) { | |
346 | field.setAccessible(true); | |
db31c358 | 347 | |
e570f7eb NR |
348 | if (field.getName().startsWith("this$") |
349 | || field.isSynthetic() | |
350 | || (field.getModifiers() & Modifier.STATIC) == Modifier.STATIC) { | |
ce0974c4 | 351 | // Do not keep this links of nested classes |
e570f7eb NR |
352 | // Do not keep synthetic fields |
353 | // Do not keep final fields | |
ce0974c4 NR |
354 | continue; |
355 | } | |
db31c358 | 356 | |
68532958 NR |
357 | write(out, "\n"); |
358 | write(out, field.getName()); | |
359 | write(out, ":"); | |
db31c358 | 360 | |
68532958 | 361 | Object value = field.get(o); |
db31c358 | 362 | |
68532958 NR |
363 | if (!encode(out, value)) { |
364 | write(out, "\n"); | |
365 | append(out, value, map); | |
ce0974c4 | 366 | } |
db31c358 | 367 | } |
ce0974c4 NR |
368 | } catch (IllegalArgumentException e) { |
369 | e.printStackTrace(); // should not happen (see | |
370 | // setAccessible) | |
371 | } catch (IllegalAccessException e) { | |
372 | e.printStackTrace(); // should not happen (see | |
373 | // setAccessible) | |
db31c358 | 374 | } |
db31c358 | 375 | } |
68532958 | 376 | write(out, "\n}"); |
db31c358 NR |
377 | } |
378 | ||
5bc55b51 | 379 | /** |
68532958 NR |
380 | * Encode the object into the given {@link OutputStream} if possible and if |
381 | * supported. | |
949445ee NR |
382 | * <p> |
383 | * A supported object in this context means an object we can directly | |
384 | * encode, like an Integer or a String. Custom objects and arrays are also | |
385 | * considered supported, but <b>compound objects are not supported here</b>. | |
386 | * <p> | |
387 | * For compound objects, you should use {@link Exporter}. | |
5bc55b51 | 388 | * |
68532958 NR |
389 | * @param out |
390 | * the {@link OutputStream} to append to | |
5bc55b51 NR |
391 | * @param value |
392 | * the object to encode (can be NULL, which will be encoded) | |
393 | * | |
68532958 NR |
394 | * @return TRUE if success, FALSE if not (the content of the |
395 | * {@link OutputStream} won't be changed in case of failure) | |
396 | * | |
397 | * @throws IOException | |
398 | * in case of I/O error | |
5bc55b51 | 399 | */ |
68532958 | 400 | static boolean encode(OutputStream out, Object value) throws IOException { |
db31c358 | 401 | if (value == null) { |
68532958 | 402 | write(out, "NULL"); |
72648e75 NR |
403 | } else if (value.getClass().getSimpleName().endsWith("[]")) { |
404 | // Simple name does support [] suffix and do not return NULL for | |
405 | // inner anonymous classes | |
68532958 | 406 | return customTypes.get("[]").encode(out, value); |
db31c358 | 407 | } else if (customTypes.containsKey(value.getClass().getCanonicalName())) { |
5bc55b51 | 408 | return customTypes.get(value.getClass().getCanonicalName())// |
68532958 | 409 | .encode(out, value); |
db31c358 | 410 | } else if (value instanceof String) { |
68532958 | 411 | encodeString(out, (String) value); |
db31c358 | 412 | } else if (value instanceof Boolean) { |
68532958 | 413 | write(out, value); |
db31c358 | 414 | } else if (value instanceof Byte) { |
68532958 NR |
415 | write(out, value); |
416 | write(out, "b"); | |
db31c358 | 417 | } else if (value instanceof Character) { |
68532958 NR |
418 | encodeString(out, "" + value); |
419 | write(out, "c"); | |
db31c358 | 420 | } else if (value instanceof Short) { |
68532958 NR |
421 | write(out, value); |
422 | write(out, "s"); | |
db31c358 | 423 | } else if (value instanceof Integer) { |
68532958 | 424 | write(out, value); |
db31c358 | 425 | } else if (value instanceof Long) { |
68532958 NR |
426 | write(out, value); |
427 | write(out, "L"); | |
db31c358 | 428 | } else if (value instanceof Float) { |
68532958 NR |
429 | write(out, value); |
430 | write(out, "F"); | |
db31c358 | 431 | } else if (value instanceof Double) { |
68532958 NR |
432 | write(out, value); |
433 | write(out, "d"); | |
e570f7eb NR |
434 | } else if (value instanceof Enum) { |
435 | String type = value.getClass().getCanonicalName(); | |
68532958 NR |
436 | write(out, type); |
437 | write(out, "."); | |
438 | write(out, ((Enum<?>) value).name()); | |
439 | write(out, ";"); | |
db31c358 NR |
440 | } else { |
441 | return false; | |
442 | } | |
443 | ||
444 | return true; | |
445 | } | |
446 | ||
5bc55b51 | 447 | /** |
949445ee NR |
448 | * Decode the data into an equivalent supported source object. |
449 | * <p> | |
450 | * A supported object in this context means an object we can directly | |
451 | * encode, like an Integer or a String. Custom objects and arrays are also | |
452 | * considered supported, but <b>compound objects are not supported here</b>. | |
453 | * <p> | |
454 | * For compound objects, you should use {@link Importer}. | |
5bc55b51 NR |
455 | * |
456 | * @param encodedValue | |
457 | * the encoded data, cannot be NULL | |
458 | * | |
459 | * @return the object (can be NULL for NULL encoded values) | |
460 | * | |
452f38c8 | 461 | * @throws IOException |
5bc55b51 NR |
462 | * if the content cannot be converted |
463 | */ | |
452f38c8 | 464 | static Object decode(String encodedValue) throws IOException { |
5bc55b51 | 465 | try { |
452f38c8 NR |
466 | String cut = ""; |
467 | if (encodedValue.length() > 1) { | |
468 | cut = encodedValue.substring(0, encodedValue.length() - 1); | |
469 | } | |
470 | ||
5bc55b51 NR |
471 | if (CustomSerializer.isCustom(encodedValue)) { |
472 | // custom:TYPE_NAME:"content is String-encoded" | |
473 | String type = CustomSerializer.typeOf(encodedValue); | |
474 | if (customTypes.containsKey(type)) { | |
564bbbdb NR |
475 | // TODO: we should start with a stream |
476 | InputStream streamEncodedValue = new ByteArrayInputStream( | |
477 | encodedValue.getBytes("UTF-8")); | |
478 | try { | |
479 | return customTypes.get(type).decode(streamEncodedValue); | |
480 | } finally { | |
481 | streamEncodedValue.close(); | |
482 | } | |
5bc55b51 | 483 | } |
452f38c8 | 484 | throw new IOException("Unknown custom type: " + type); |
5bc55b51 NR |
485 | } else if (encodedValue.equals("NULL") |
486 | || encodedValue.equals("null")) { | |
487 | return null; | |
488 | } else if (encodedValue.endsWith("\"")) { | |
489 | return decodeString(encodedValue); | |
490 | } else if (encodedValue.equals("true")) { | |
491 | return true; | |
492 | } else if (encodedValue.equals("false")) { | |
493 | return false; | |
494 | } else if (encodedValue.endsWith("b")) { | |
495 | return Byte.parseByte(cut); | |
496 | } else if (encodedValue.endsWith("c")) { | |
497 | return decodeString(cut).charAt(0); | |
498 | } else if (encodedValue.endsWith("s")) { | |
499 | return Short.parseShort(cut); | |
500 | } else if (encodedValue.endsWith("L")) { | |
501 | return Long.parseLong(cut); | |
502 | } else if (encodedValue.endsWith("F")) { | |
503 | return Float.parseFloat(cut); | |
504 | } else if (encodedValue.endsWith("d")) { | |
505 | return Double.parseDouble(cut); | |
506 | } else if (encodedValue.endsWith(";")) { | |
507 | return decodeEnum(encodedValue); | |
508 | } else { | |
509 | return Integer.parseInt(encodedValue); | |
db31c358 | 510 | } |
5bc55b51 | 511 | } catch (Exception e) { |
452f38c8 NR |
512 | if (e instanceof IOException) { |
513 | throw (IOException) e; | |
5bc55b51 | 514 | } |
452f38c8 | 515 | throw new IOException(e.getMessage()); |
db31c358 NR |
516 | } |
517 | } | |
8c8da42a | 518 | |
68532958 NR |
519 | /** |
520 | * Write the given {@link String} into the given {@link OutputStream} in | |
521 | * UTF-8. | |
522 | * | |
523 | * @param out | |
524 | * the {@link OutputStream} | |
525 | * @param data | |
526 | * the data to write, cannot be NULL | |
527 | * | |
528 | * @throws IOException | |
529 | * in case of I/O error | |
530 | */ | |
531 | static void write(OutputStream out, Object data) throws IOException { | |
532 | try { | |
533 | out.write(data.toString().getBytes("UTF-8")); | |
534 | } catch (UnsupportedEncodingException e) { | |
535 | // A conforming JVM is required to support UTF-8 | |
536 | e.printStackTrace(); | |
537 | } | |
538 | } | |
539 | ||
8c8da42a NR |
540 | /** |
541 | * Return the corresponding class or throw an {@link Exception} if it | |
542 | * cannot. | |
543 | * | |
544 | * @param type | |
545 | * the class name to look for | |
546 | * | |
547 | * @return the class (will never be NULL) | |
548 | * | |
549 | * @throws ClassNotFoundException | |
550 | * if the class cannot be found | |
551 | * @throws NoSuchMethodException | |
552 | * if the class cannot be created (usually because it or its | |
553 | * enclosing class doesn't have an empty constructor) | |
554 | */ | |
555 | static private Class<?> getClass(String type) | |
556 | throws ClassNotFoundException, NoSuchMethodException { | |
aad14586 NR |
557 | Class<?> clazz = null; |
558 | try { | |
559 | clazz = Class.forName(type); | |
560 | } catch (ClassNotFoundException e) { | |
561 | int pos = type.length(); | |
562 | pos = type.lastIndexOf(".", pos); | |
563 | if (pos >= 0) { | |
564 | String parentType = type.substring(0, pos); | |
565 | String nestedType = type.substring(pos + 1); | |
566 | Class<?> javaParent = null; | |
567 | try { | |
568 | javaParent = getClass(parentType); | |
569 | parentType = javaParent.getName(); | |
570 | clazz = Class.forName(parentType + "$" + nestedType); | |
571 | } catch (Exception ee) { | |
572 | } | |
db31c358 | 573 | |
aad14586 NR |
574 | if (javaParent == null) { |
575 | throw new NoSuchMethodException( | |
576 | "Class not found: " | |
577 | + type | |
578 | + " (the enclosing class cannot be created: maybe it doesn't have an empty constructor?)"); | |
579 | } | |
580 | } | |
581 | } | |
582 | ||
8c8da42a NR |
583 | if (clazz == null) { |
584 | throw new ClassNotFoundException("Class not found: " + type); | |
585 | } | |
586 | ||
aad14586 NR |
587 | return clazz; |
588 | } | |
8c8da42a | 589 | |
e570f7eb | 590 | @SuppressWarnings({ "unchecked", "rawtypes" }) |
68532958 | 591 | static private Enum<?> decodeEnum(String escaped) { |
e570f7eb NR |
592 | // escaped: be.xxx.EnumType.VALUE; |
593 | int pos = escaped.lastIndexOf("."); | |
594 | String type = escaped.substring(0, pos); | |
595 | String name = escaped.substring(pos + 1, escaped.length() - 1); | |
596 | ||
597 | try { | |
598 | return Enum.valueOf((Class<Enum>) getClass(type), name); | |
599 | } catch (Exception e) { | |
e570f7eb NR |
600 | throw new UnknownFormatConversionException("Unknown enum: <" + type |
601 | + "> " + name); | |
602 | } | |
603 | } | |
604 | ||
db31c358 | 605 | // aa bb -> "aa\tbb" |
68532958 NR |
606 | static void encodeString(OutputStream out, String raw) throws IOException { |
607 | out.write('\"'); | |
608 | // TODO !! utf-8 required | |
db31c358 | 609 | for (char car : raw.toCharArray()) { |
68532958 NR |
610 | encodeString(out, car); |
611 | } | |
612 | out.write('\"'); | |
613 | } | |
614 | ||
615 | // aa bb -> "aa\tbb" | |
616 | static void encodeString(OutputStream out, InputStream raw) | |
617 | throws IOException { | |
618 | out.write('\"'); | |
564bbbdb | 619 | byte buffer[] = new byte[4096]; |
68532958 NR |
620 | for (int len = 0; (len = raw.read(buffer)) > 0;) { |
621 | for (int i = 0; i < len; i++) { | |
622 | // TODO: not 100% correct, look up howto for UTF-8 | |
623 | encodeString(out, (char) buffer[i]); | |
db31c358 NR |
624 | } |
625 | } | |
68532958 NR |
626 | out.write('\"'); |
627 | } | |
628 | ||
629 | // for encode string, NOT to encode a char by itself! | |
630 | static void encodeString(OutputStream out, char raw) throws IOException { | |
631 | switch (raw) { | |
632 | case '\\': | |
633 | out.write('\\'); | |
634 | out.write('\\'); | |
635 | break; | |
636 | case '\r': | |
637 | out.write('\\'); | |
638 | out.write('r'); | |
639 | break; | |
640 | case '\n': | |
641 | out.write('\\'); | |
642 | out.write('n'); | |
643 | break; | |
644 | case '"': | |
645 | out.write('\\'); | |
646 | out.write('\"'); | |
647 | break; | |
648 | default: | |
649 | out.write(raw); | |
650 | break; | |
651 | } | |
db31c358 NR |
652 | } |
653 | ||
654 | // "aa\tbb" -> aa bb | |
68532958 | 655 | static String decodeString(String escaped) { |
db31c358 NR |
656 | StringBuilder builder = new StringBuilder(); |
657 | ||
658 | boolean escaping = false; | |
659 | for (char car : escaped.toCharArray()) { | |
660 | if (!escaping) { | |
661 | if (car == '\\') { | |
662 | escaping = true; | |
663 | } else { | |
664 | builder.append(car); | |
665 | } | |
666 | } else { | |
667 | switch (car) { | |
668 | case '\\': | |
669 | builder.append('\\'); | |
670 | break; | |
671 | case 'r': | |
672 | builder.append('\r'); | |
673 | break; | |
674 | case 'n': | |
675 | builder.append('\n'); | |
676 | break; | |
677 | case '"': | |
678 | builder.append('"'); | |
679 | break; | |
680 | } | |
681 | escaping = false; | |
682 | } | |
683 | } | |
684 | ||
0988831f | 685 | return builder.substring(1, builder.length() - 1); |
db31c358 NR |
686 | } |
687 | } |