Re: How do I create a fileWatcher with an onFileChange event using spawn?
On Monday, 28 August 2017 at 11:25:03 UTC, Jacob Carlborg wrote: On 2017-08-28 08:31, Nemanja Boric wrote: On Monday, 28 August 2017 at 06:27:20 UTC, Jacob Carlborg wrote: http://code.dlang.org/packages/vibe-core http://code.dlang.org/packages/libasync In addition, to avoid polling, it's possible to register yourself to the operating system so it will tell you when a modification on the given file has happened: https://msdn.microsoft.com/en-us/library/aa364417%28VS.85%29.aspx?f=255=-2147217396 http://man7.org/linux/man-pages/man7/inotify.7.html That's what the two libraries above provides, in a cross-platform way. There's already a dub package for file system watching: https://code.dlang.org/packages/fswatch
Re: How do I create a fileWatcher with an onFileChange event using spawn?
On Friday, 25 August 2017 at 21:25:37 UTC, Enjoys Math wrote:
Something like this:
module file_watcher;
import std.concurrency;
import std.file;
import std.signals;
import std.datetime;
void fileWatcher(Tid tid, string filename, int loopSleep) {
auto modified0 = timeLastModified(filename);
while (true) {
modified = timeLastModified(filename);
if (modified > modified0) {
modified0 = modified;
//if (onFileChange !is null)
//onFileChange(receiver);
}
sleep(dur!"msecs"(loopSleep));
}
}
But I'm not sure how to send the onFiledChange event.
@Nemanja Boric I would not recommend calling those APIs on
Windows because they work on entire directories, not suitable for
individual files and sometimes those functions not even work
when other programs change the files in a non standard way (that
has happened to me before when editing through a text editor)
@Enjoys Math The way I usually deal with this problem is I save
the filename, the time and handler function in an associative
array and loop through when something changes, this way you can
delete, sort, etc on the map when the files are deleted or so.
Hope this helps a little.
Re: How do I create a fileWatcher with an onFileChange event using spawn?
On Monday, 28 August 2017 at 06:27:20 UTC, Jacob Carlborg wrote:
On 2017-08-25 23:25, Enjoys Math wrote:
Something like this:
module file_watcher;
import std.concurrency;
import std.file;
import std.signals;
import std.datetime;
void fileWatcher(Tid tid, string filename, int loopSleep) {
auto modified0 = timeLastModified(filename);
while (true) {
modified = timeLastModified(filename);
if (modified > modified0) {
modified0 = modified;
//if (onFileChange !is null)
// onFileChange(receiver);
}
sleep(dur!"msecs"(loopSleep));
}
}
But I'm not sure how to send the onFiledChange event.
A delegate perhaps?
Or you can look at any of the existing event driven libraries
that do this:
http://code.dlang.org/packages/vibe-core
http://code.dlang.org/packages/libasync
No a plain delegate won't work. There's something you're not
telling me because I've tried delegates. They have to be shared
or something, and that causes a big mess with my code.
Re: How do I create a fileWatcher with an onFileChange event using spawn?
On 2017-08-28 08:31, Nemanja Boric wrote: On Monday, 28 August 2017 at 06:27:20 UTC, Jacob Carlborg wrote: http://code.dlang.org/packages/vibe-core http://code.dlang.org/packages/libasync In addition, to avoid polling, it's possible to register yourself to the operating system so it will tell you when a modification on the given file has happened: https://msdn.microsoft.com/en-us/library/aa364417%28VS.85%29.aspx?f=255=-2147217396 http://man7.org/linux/man-pages/man7/inotify.7.html That's what the two libraries above provides, in a cross-platform way. -- /Jacob Carlborg
Re: How do I create a fileWatcher with an onFileChange event using spawn?
On Monday, 28 August 2017 at 06:27:20 UTC, Jacob Carlborg wrote:
On 2017-08-25 23:25, Enjoys Math wrote:
Something like this:
module file_watcher;
import std.concurrency;
import std.file;
import std.signals;
import std.datetime;
void fileWatcher(Tid tid, string filename, int loopSleep) {
auto modified0 = timeLastModified(filename);
while (true) {
modified = timeLastModified(filename);
if (modified > modified0) {
modified0 = modified;
//if (onFileChange !is null)
// onFileChange(receiver);
}
sleep(dur!"msecs"(loopSleep));
}
}
But I'm not sure how to send the onFiledChange event.
A delegate perhaps?
Or you can look at any of the existing event driven libraries
that do this:
http://code.dlang.org/packages/vibe-core
http://code.dlang.org/packages/libasync
In addition, to avoid polling, it's possible to register yourself
to the operating system so it will tell you when a modification
on the given file has happened:
https://msdn.microsoft.com/en-us/library/aa364417%28VS.85%29.aspx?f=255=-2147217396 http://man7.org/linux/man-pages/man7/inotify.7.html
Re: How do I create a fileWatcher with an onFileChange event using spawn?
On 2017-08-25 23:25, Enjoys Math wrote:
Something like this:
module file_watcher;
import std.concurrency;
import std.file;
import std.signals;
import std.datetime;
void fileWatcher(Tid tid, string filename, int loopSleep) {
auto modified0 = timeLastModified(filename);
while (true) {
modified = timeLastModified(filename);
if (modified > modified0) {
modified0 = modified;
//if (onFileChange !is null)
// onFileChange(receiver);
}
sleep(dur!"msecs"(loopSleep));
}
}
But I'm not sure how to send the onFiledChange event.
A delegate perhaps?
Or you can look at any of the existing event driven libraries that do this:
http://code.dlang.org/packages/vibe-core
http://code.dlang.org/packages/libasync
--
/Jacob Carlborg
How do I create a fileWatcher with an onFileChange event using spawn?
Something like this:
module file_watcher;
import std.concurrency;
import std.file;
import std.signals;
import std.datetime;
void fileWatcher(Tid tid, string filename, int loopSleep) {
auto modified0 = timeLastModified(filename);
while (true) {
modified = timeLastModified(filename);
if (modified > modified0) {
modified0 = modified;
//if (onFileChange !is null)
//onFileChange(receiver);
}
sleep(dur!"msecs"(loopSleep));
}
}
But I'm not sure how to send the onFiledChange event.
