/
FileIOUtils.java
951 lines (888 loc) · 33 KB
/
FileIOUtils.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
package com.blankj.utilcode.util;
import android.util.Log;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.RandomAccessFile;
import java.io.UnsupportedEncodingException;
import java.nio.ByteBuffer;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
import java.util.ArrayList;
import java.util.List;
/**
* <pre>
* author: Blankj
* blog : http://blankj.com
* time : 2017/06/22
* desc : utils about file io
* </pre>
*/
public final class FileIOUtils {
private static int sBufferSize = 524288;
private FileIOUtils() {
throw new UnsupportedOperationException("u can't instantiate me...");
}
///////////////////////////////////////////////////////////////////////////
// writeFileFromIS without progress
///////////////////////////////////////////////////////////////////////////
/**
* Write file from input stream.
*
* @param filePath The path of file.
* @param is The input stream.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromIS(final String filePath, final InputStream is) {
return writeFileFromIS(UtilsBridge.getFileByPath(filePath), is, false, null);
}
/**
* Write file from input stream.
*
* @param filePath The path of file.
* @param is The input stream.
* @param append True to append, false otherwise.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromIS(final String filePath,
final InputStream is,
final boolean append) {
return writeFileFromIS(UtilsBridge.getFileByPath(filePath), is, append, null);
}
/**
* Write file from input stream.
*
* @param file The file.
* @param is The input stream.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromIS(final File file, final InputStream is) {
return writeFileFromIS(file, is, false, null);
}
/**
* Write file from input stream.
*
* @param file The file.
* @param is The input stream.
* @param append True to append, false otherwise.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromIS(final File file,
final InputStream is,
final boolean append) {
return writeFileFromIS(file, is, append, null);
}
///////////////////////////////////////////////////////////////////////////
// writeFileFromIS with progress
///////////////////////////////////////////////////////////////////////////
/**
* Write file from input stream.
*
* @param filePath The path of file.
* @param is The input stream.
* @param listener The progress update listener.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromIS(final String filePath,
final InputStream is,
final OnProgressUpdateListener listener) {
return writeFileFromIS(UtilsBridge.getFileByPath(filePath), is, false, listener);
}
/**
* Write file from input stream.
*
* @param filePath The path of file.
* @param is The input stream.
* @param append True to append, false otherwise.
* @param listener The progress update listener.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromIS(final String filePath,
final InputStream is,
final boolean append,
final OnProgressUpdateListener listener) {
return writeFileFromIS(UtilsBridge.getFileByPath(filePath), is, append, listener);
}
/**
* Write file from input stream.
*
* @param file The file.
* @param is The input stream.
* @param listener The progress update listener.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromIS(final File file,
final InputStream is,
final OnProgressUpdateListener listener) {
return writeFileFromIS(file, is, false, listener);
}
/**
* Write file from input stream.
*
* @param file The file.
* @param is The input stream.
* @param append True to append, false otherwise.
* @param listener The progress update listener.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromIS(final File file,
final InputStream is,
final boolean append,
final OnProgressUpdateListener listener) {
if (is == null || !UtilsBridge.createOrExistsFile(file)) {
Log.e("FileIOUtils", "create file <" + file + "> failed.");
return false;
}
OutputStream os = null;
try {
os = new BufferedOutputStream(new FileOutputStream(file, append), sBufferSize);
if (listener == null) {
byte[] data = new byte[sBufferSize];
for (int len; (len = is.read(data)) != -1; ) {
os.write(data, 0, len);
}
} else {
double totalSize = is.available();
int curSize = 0;
listener.onProgressUpdate(0);
byte[] data = new byte[sBufferSize];
for (int len; (len = is.read(data)) != -1; ) {
os.write(data, 0, len);
curSize += len;
listener.onProgressUpdate(curSize / totalSize);
}
}
return true;
} catch (IOException e) {
e.printStackTrace();
return false;
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
try {
if (os != null) {
os.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
///////////////////////////////////////////////////////////////////////////
// writeFileFromBytesByStream without progress
///////////////////////////////////////////////////////////////////////////
/**
* Write file from bytes by stream.
*
* @param filePath The path of file.
* @param bytes The bytes.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromBytesByStream(final String filePath, final byte[] bytes) {
return writeFileFromBytesByStream(UtilsBridge.getFileByPath(filePath), bytes, false, null);
}
/**
* Write file from bytes by stream.
*
* @param filePath The path of file.
* @param bytes The bytes.
* @param append True to append, false otherwise.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromBytesByStream(final String filePath,
final byte[] bytes,
final boolean append) {
return writeFileFromBytesByStream(UtilsBridge.getFileByPath(filePath), bytes, append, null);
}
/**
* Write file from bytes by stream.
*
* @param file The file.
* @param bytes The bytes.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromBytesByStream(final File file, final byte[] bytes) {
return writeFileFromBytesByStream(file, bytes, false, null);
}
/**
* Write file from bytes by stream.
*
* @param file The file.
* @param bytes The bytes.
* @param append True to append, false otherwise.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromBytesByStream(final File file,
final byte[] bytes,
final boolean append) {
return writeFileFromBytesByStream(file, bytes, append, null);
}
///////////////////////////////////////////////////////////////////////////
// writeFileFromBytesByStream with progress
///////////////////////////////////////////////////////////////////////////
/**
* Write file from bytes by stream.
*
* @param filePath The path of file.
* @param bytes The bytes.
* @param listener The progress update listener.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromBytesByStream(final String filePath,
final byte[] bytes,
final OnProgressUpdateListener listener) {
return writeFileFromBytesByStream(UtilsBridge.getFileByPath(filePath), bytes, false, listener);
}
/**
* Write file from bytes by stream.
*
* @param filePath The path of file.
* @param bytes The bytes.
* @param append True to append, false otherwise.
* @param listener The progress update listener.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromBytesByStream(final String filePath,
final byte[] bytes,
final boolean append,
final OnProgressUpdateListener listener) {
return writeFileFromBytesByStream(UtilsBridge.getFileByPath(filePath), bytes, append, listener);
}
/**
* Write file from bytes by stream.
*
* @param file The file.
* @param bytes The bytes.
* @param listener The progress update listener.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromBytesByStream(final File file,
final byte[] bytes,
final OnProgressUpdateListener listener) {
return writeFileFromBytesByStream(file, bytes, false, listener);
}
/**
* Write file from bytes by stream.
*
* @param file The file.
* @param bytes The bytes.
* @param append True to append, false otherwise.
* @param listener The progress update listener.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromBytesByStream(final File file,
final byte[] bytes,
final boolean append,
final OnProgressUpdateListener listener) {
if (bytes == null) return false;
return writeFileFromIS(file, new ByteArrayInputStream(bytes), append, listener);
}
/**
* Write file from bytes by channel.
*
* @param filePath The path of file.
* @param bytes The bytes.
* @param isForce 是否写入文件
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromBytesByChannel(final String filePath,
final byte[] bytes,
final boolean isForce) {
return writeFileFromBytesByChannel(UtilsBridge.getFileByPath(filePath), bytes, false, isForce);
}
/**
* Write file from bytes by channel.
*
* @param filePath The path of file.
* @param bytes The bytes.
* @param append True to append, false otherwise.
* @param isForce True to force write file, false otherwise.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromBytesByChannel(final String filePath,
final byte[] bytes,
final boolean append,
final boolean isForce) {
return writeFileFromBytesByChannel(UtilsBridge.getFileByPath(filePath), bytes, append, isForce);
}
/**
* Write file from bytes by channel.
*
* @param file The file.
* @param bytes The bytes.
* @param isForce True to force write file, false otherwise.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromBytesByChannel(final File file,
final byte[] bytes,
final boolean isForce) {
return writeFileFromBytesByChannel(file, bytes, false, isForce);
}
/**
* Write file from bytes by channel.
*
* @param file The file.
* @param bytes The bytes.
* @param append True to append, false otherwise.
* @param isForce True to force write file, false otherwise.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromBytesByChannel(final File file,
final byte[] bytes,
final boolean append,
final boolean isForce) {
if (bytes == null) {
Log.e("FileIOUtils", "bytes is null.");
return false;
}
if (!UtilsBridge.createOrExistsFile(file)) {
Log.e("FileIOUtils", "create file <" + file + "> failed.");
return false;
}
FileChannel fc = null;
try {
fc = new FileOutputStream(file, append).getChannel();
if (fc == null) {
Log.e("FileIOUtils", "fc is null.");
return false;
}
fc.position(fc.size());
fc.write(ByteBuffer.wrap(bytes));
if (isForce) fc.force(true);
return true;
} catch (IOException e) {
e.printStackTrace();
return false;
} finally {
try {
if (fc != null) {
fc.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* Write file from bytes by map.
*
* @param filePath The path of file.
* @param bytes The bytes.
* @param isForce True to force write file, false otherwise.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromBytesByMap(final String filePath,
final byte[] bytes,
final boolean isForce) {
return writeFileFromBytesByMap(filePath, bytes, false, isForce);
}
/**
* Write file from bytes by map.
*
* @param filePath The path of file.
* @param bytes The bytes.
* @param append True to append, false otherwise.
* @param isForce True to force write file, false otherwise.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromBytesByMap(final String filePath,
final byte[] bytes,
final boolean append,
final boolean isForce) {
return writeFileFromBytesByMap(UtilsBridge.getFileByPath(filePath), bytes, append, isForce);
}
/**
* Write file from bytes by map.
*
* @param file The file.
* @param bytes The bytes.
* @param isForce True to force write file, false otherwise.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromBytesByMap(final File file,
final byte[] bytes,
final boolean isForce) {
return writeFileFromBytesByMap(file, bytes, false, isForce);
}
/**
* Write file from bytes by map.
*
* @param file The file.
* @param bytes The bytes.
* @param append True to append, false otherwise.
* @param isForce True to force write file, false otherwise.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromBytesByMap(final File file,
final byte[] bytes,
final boolean append,
final boolean isForce) {
if (bytes == null || !UtilsBridge.createOrExistsFile(file)) {
Log.e("FileIOUtils", "create file <" + file + "> failed.");
return false;
}
FileChannel fc = null;
try {
fc = new FileOutputStream(file, append).getChannel();
if (fc == null) {
Log.e("FileIOUtils", "fc is null.");
return false;
}
MappedByteBuffer mbb = fc.map(FileChannel.MapMode.READ_WRITE, fc.size(), bytes.length);
mbb.put(bytes);
if (isForce) mbb.force();
return true;
} catch (IOException e) {
e.printStackTrace();
return false;
} finally {
try {
if (fc != null) {
fc.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* Write file from string.
*
* @param filePath The path of file.
* @param content The string of content.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromString(final String filePath, final String content) {
return writeFileFromString(UtilsBridge.getFileByPath(filePath), content, false);
}
/**
* Write file from string.
*
* @param filePath The path of file.
* @param content The string of content.
* @param append True to append, false otherwise.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromString(final String filePath,
final String content,
final boolean append) {
return writeFileFromString(UtilsBridge.getFileByPath(filePath), content, append);
}
/**
* Write file from string.
*
* @param file The file.
* @param content The string of content.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromString(final File file, final String content) {
return writeFileFromString(file, content, false);
}
/**
* Write file from string.
*
* @param file The file.
* @param content The string of content.
* @param append True to append, false otherwise.
* @return {@code true}: success<br>{@code false}: fail
*/
public static boolean writeFileFromString(final File file,
final String content,
final boolean append) {
if (file == null || content == null) return false;
if (!UtilsBridge.createOrExistsFile(file)) {
Log.e("FileIOUtils", "create file <" + file + "> failed.");
return false;
}
BufferedWriter bw = null;
try {
bw = new BufferedWriter(new FileWriter(file, append));
bw.write(content);
return true;
} catch (IOException e) {
e.printStackTrace();
return false;
} finally {
try {
if (bw != null) {
bw.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
///////////////////////////////////////////////////////////////////////////
// the divide line of write and read
///////////////////////////////////////////////////////////////////////////
/**
* Return the lines in file.
*
* @param filePath The path of file.
* @return the lines in file
*/
public static List<String> readFile2List(final String filePath) {
return readFile2List(UtilsBridge.getFileByPath(filePath), null);
}
/**
* Return the lines in file.
*
* @param filePath The path of file.
* @param charsetName The name of charset.
* @return the lines in file
*/
public static List<String> readFile2List(final String filePath, final String charsetName) {
return readFile2List(UtilsBridge.getFileByPath(filePath), charsetName);
}
/**
* Return the lines in file.
*
* @param file The file.
* @return the lines in file
*/
public static List<String> readFile2List(final File file) {
return readFile2List(file, 0, 0x7FFFFFFF, null);
}
/**
* Return the lines in file.
*
* @param file The file.
* @param charsetName The name of charset.
* @return the lines in file
*/
public static List<String> readFile2List(final File file, final String charsetName) {
return readFile2List(file, 0, 0x7FFFFFFF, charsetName);
}
/**
* Return the lines in file.
*
* @param filePath The path of file.
* @param st The line's index of start.
* @param end The line's index of end.
* @return the lines in file
*/
public static List<String> readFile2List(final String filePath, final int st, final int end) {
return readFile2List(UtilsBridge.getFileByPath(filePath), st, end, null);
}
/**
* Return the lines in file.
*
* @param filePath The path of file.
* @param st The line's index of start.
* @param end The line's index of end.
* @param charsetName The name of charset.
* @return the lines in file
*/
public static List<String> readFile2List(final String filePath,
final int st,
final int end,
final String charsetName) {
return readFile2List(UtilsBridge.getFileByPath(filePath), st, end, charsetName);
}
/**
* Return the lines in file.
*
* @param file The file.
* @param st The line's index of start.
* @param end The line's index of end.
* @return the lines in file
*/
public static List<String> readFile2List(final File file, final int st, final int end) {
return readFile2List(file, st, end, null);
}
/**
* Return the lines in file.
*
* @param file The file.
* @param st The line's index of start.
* @param end The line's index of end.
* @param charsetName The name of charset.
* @return the lines in file
*/
public static List<String> readFile2List(final File file,
final int st,
final int end,
final String charsetName) {
if (!UtilsBridge.isFileExists(file)) return null;
if (st > end) return null;
BufferedReader reader = null;
try {
String line;
int curLine = 1;
List<String> list = new ArrayList<>();
if (UtilsBridge.isSpace(charsetName)) {
reader = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
} else {
reader = new BufferedReader(
new InputStreamReader(new FileInputStream(file), charsetName)
);
}
while ((line = reader.readLine()) != null) {
if (curLine > end) break;
if (st <= curLine && curLine <= end) list.add(line);
++curLine;
}
return list;
} catch (IOException e) {
e.printStackTrace();
return null;
} finally {
try {
if (reader != null) {
reader.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* Return the string in file.
*
* @param filePath The path of file.
* @return the string in file
*/
public static String readFile2String(final String filePath) {
return readFile2String(UtilsBridge.getFileByPath(filePath), null);
}
/**
* Return the string in file.
*
* @param filePath The path of file.
* @param charsetName The name of charset.
* @return the string in file
*/
public static String readFile2String(final String filePath, final String charsetName) {
return readFile2String(UtilsBridge.getFileByPath(filePath), charsetName);
}
/**
* Return the string in file.
*
* @param file The file.
* @return the string in file
*/
public static String readFile2String(final File file) {
return readFile2String(file, null);
}
/**
* Return the string in file.
*
* @param file The file.
* @param charsetName The name of charset.
* @return the string in file
*/
public static String readFile2String(final File file, final String charsetName) {
byte[] bytes = readFile2BytesByStream(file);
if (bytes == null) return null;
if (UtilsBridge.isSpace(charsetName)) {
return new String(bytes);
} else {
try {
return new String(bytes, charsetName);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
return "";
}
}
}
///////////////////////////////////////////////////////////////////////////
// readFile2BytesByStream without progress
///////////////////////////////////////////////////////////////////////////
/**
* Return the bytes in file by stream.
*
* @param filePath The path of file.
* @return the bytes in file
*/
public static byte[] readFile2BytesByStream(final String filePath) {
return readFile2BytesByStream(UtilsBridge.getFileByPath(filePath), null);
}
/**
* Return the bytes in file by stream.
*
* @param file The file.
* @return the bytes in file
*/
public static byte[] readFile2BytesByStream(final File file) {
return readFile2BytesByStream(file, null);
}
///////////////////////////////////////////////////////////////////////////
// readFile2BytesByStream with progress
///////////////////////////////////////////////////////////////////////////
/**
* Return the bytes in file by stream.
*
* @param filePath The path of file.
* @param listener The progress update listener.
* @return the bytes in file
*/
public static byte[] readFile2BytesByStream(final String filePath,
final OnProgressUpdateListener listener) {
return readFile2BytesByStream(UtilsBridge.getFileByPath(filePath), listener);
}
/**
* Return the bytes in file by stream.
*
* @param file The file.
* @param listener The progress update listener.
* @return the bytes in file
*/
public static byte[] readFile2BytesByStream(final File file,
final OnProgressUpdateListener listener) {
if (!UtilsBridge.isFileExists(file)) return null;
try {
ByteArrayOutputStream os = null;
InputStream is = new BufferedInputStream(new FileInputStream(file), sBufferSize);
try {
os = new ByteArrayOutputStream();
byte[] b = new byte[sBufferSize];
int len;
if (listener == null) {
while ((len = is.read(b, 0, sBufferSize)) != -1) {
os.write(b, 0, len);
}
} else {
double totalSize = is.available();
int curSize = 0;
listener.onProgressUpdate(0);
while ((len = is.read(b, 0, sBufferSize)) != -1) {
os.write(b, 0, len);
curSize += len;
listener.onProgressUpdate(curSize / totalSize);
}
}
return os.toByteArray();
} catch (IOException e) {
e.printStackTrace();
return null;
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
try {
if (os != null) {
os.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
} catch (FileNotFoundException e) {
e.printStackTrace();
return null;
}
}
/**
* Return the bytes in file by channel.
*
* @param filePath The path of file.
* @return the bytes in file
*/
public static byte[] readFile2BytesByChannel(final String filePath) {
return readFile2BytesByChannel(UtilsBridge.getFileByPath(filePath));
}
/**
* Return the bytes in file by channel.
*
* @param file The file.
* @return the bytes in file
*/
public static byte[] readFile2BytesByChannel(final File file) {
if (!UtilsBridge.isFileExists(file)) return null;
FileChannel fc = null;
try {
fc = new RandomAccessFile(file, "r").getChannel();
if (fc == null) {
Log.e("FileIOUtils", "fc is null.");
return new byte[0];
}
ByteBuffer byteBuffer = ByteBuffer.allocate((int) fc.size());
while (true) {
if (!((fc.read(byteBuffer)) > 0)) break;
}
return byteBuffer.array();
} catch (IOException e) {
e.printStackTrace();
return null;
} finally {
try {
if (fc != null) {
fc.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* Return the bytes in file by map.
*
* @param filePath The path of file.
* @return the bytes in file
*/
public static byte[] readFile2BytesByMap(final String filePath) {
return readFile2BytesByMap(UtilsBridge.getFileByPath(filePath));
}
/**
* Return the bytes in file by map.
*
* @param file The file.
* @return the bytes in file
*/
public static byte[] readFile2BytesByMap(final File file) {
if (!UtilsBridge.isFileExists(file)) return null;
FileChannel fc = null;
try {
fc = new RandomAccessFile(file, "r").getChannel();
if (fc == null) {
Log.e("FileIOUtils", "fc is null.");
return new byte[0];
}
int size = (int) fc.size();
MappedByteBuffer mbb = fc.map(FileChannel.MapMode.READ_ONLY, 0, size).load();
byte[] result = new byte[size];
mbb.get(result, 0, size);
return result;
} catch (IOException e) {
e.printStackTrace();
return null;
} finally {
try {
if (fc != null) {
fc.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* Set the buffer's size.
* <p>Default size equals 8192 bytes.</p>
*
* @param bufferSize The buffer's size.
*/
public static void setBufferSize(final int bufferSize) {
sBufferSize = bufferSize;
}
public interface OnProgressUpdateListener {
void onProgressUpdate(double progress);
}
}