federicoceratto / nim-fswatch Goto Github PK

Minimal reproduction:

import fswatch

var monitor = newMonitor(latency=0.01)
monitor.set_recursive true
monitor.add("test_files")

proc callback(eg: EventGroup) =
  for e in eg:
    echo "Event: ", e.kind

monitor.setCallback(callback)
monitor.start()

Create a folder containing some folders and run:

mkdir test_files
for i in `seq 10`; do mkdir "test_files/$i"; done
nim c -r test.nim

Yields this result:

Error: unhandled exception: index 101 not in 0 .. 100 [IndexError]

Hello!

Promising wrappers here! Unfortunately I can't quite get it to run, but maybe I'm doing it wrong.

• Running Mac OS X (Darwin v. 10.13.6)
• Installed fswatch with brew, ie) brew install fswatch.
• Installed this library using nimble, ie) nimble install fswatch.

When I try running the example code, I get an error on line 5, the monitor.setCallback(callback). Its template/generic instantiation of `setCallback` from here. And another, monitor.start() gives the error Error: undeclared identifier: 'data'. I'm guessing the first error is related to the first error though.

Judging from this project's README, this has only been tested on Linux. So I changed the library's libfswatch_fn variable in libsfwatch.nim file to const libfswatch_fn* = "/usr/local/Cellar/fswatch/1.14.0/lib/libfswatch.11.dylib", which is the path to my lib on os x. But I still get the same error after changing this.

If I'm just doing something plain wrong, please let me know and close the issue. Thanks!

setCallback assumes the existence of a data variable which is passed to the callback:

A temporary fix is to declare a variable named data in the scope where setCallback is called.

var data = ""
monitor.setCallback(callback)