1 | sclass TailFile {
|
2 | File file; |
3 | int interval; |
4 | long l; |
5 | new Flag stopped; |
6 | java.util.Timer timer; |
7 | ReliableSingleThread thread; |
8 | volatile bool hasIdled, debug; |
9 | |
10 | *() {}
|
11 | *(final File *file, int *interval, fO onData) {
|
12 | thread = new ReliableSingleThread(r {
|
13 | long l2 = l(file); |
14 | if (l2 < l) l = 0; // file shrunk (log rotated!) - start over from beginning of file |
15 | if (l2 == l) hasIdled = true; |
16 | else pcall {
|
17 | if (debug) print("New data in " + f2s(file) + ": " + n2(l2-l, "byte"));
|
18 | S text = null; |
19 | for (S s : loadTextFilePart_iterator(file, l, l2)) |
20 | pcallF(onData, s); |
21 | l = l2; |
22 | } |
23 | }); |
24 | } |
25 | |
26 | void start {
|
27 | timer = doEvery(interval, r {
|
28 | if (!stopped.isUp()) thread.trigger() |
29 | }); |
30 | } |
31 | |
32 | void stop {
|
33 | timer.cancel(); |
34 | timer = null; |
35 | if (stopped.raise()) |
36 | thread.triggerAndWait(); // One last time baby |
37 | } |
38 | |
39 | bool started() {
|
40 | ret timer != null; |
41 | } |
42 | |
43 | void debugOn {
|
44 | if (debug) ret; |
45 | debug = true; |
46 | print("Watching file: " + f2s(file));
|
47 | } |
48 | } |
Began life as a copy of #1013001
download show line numbers debug dex old transpilations
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| Snippet ID: | #1015195 |
| Snippet name: | TailFile |
| Eternal ID of this version: | #1015195/1 |
| Text MD5: | b7d14f36ef54a1bebd3e54bb3f4da8b1 |
| Author: | stefan |
| Category: | javax / i.o. |
| Type: | JavaX fragment (include) |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2018-05-10 17:47:22 |
| Source code size: | 1114 bytes / 48 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 255 / 291 |
| Referenced in: | [show references] |