hs.task doesn't like arguments with quotes

[latenitefilms]

I've been struggling to get hs.task to work properly, as it doesn't seem to like quotes or double quotes in the attribute table.

Basically, I'm trying to trigger something similar to:

/Applications/Compressor.app/Contents/MacOS/Compressor -monitor -jobid "5E0D3BF6-981C-4911-962E-DBC47F5554DD"

I'm using:

local log = require("hs.logger").new("test")
local test =  hs.task.new("/Applications/Compressor.app/Contents/MacOS/Compressor", function(exitCode, stdOut, stdErr)
    log.df("exitCode: %s", exitCode)
    log.df("stdOut: %s", stdOut)
    log.df("stdErr: %s", stdErr)
end, function(task, stdOut, stdErr)
    log.df("task: %s", task)
    log.df("stdOut: %s", stdOut)
    log.df("stdErr: %s", stdErr)
end, { "-monitor", "-jobid", [["5E0D3BF6-981C-4911-962E-DBC47F5554DD"]] } ):start()

I've also tried using single quotes, but same issue. I've also tried escaping the quotes in the string (i.e. [[\"5E0D3BF6-981C-4911-962E-DBC47F5554DD\"]]), but no dice.

Any suggestions @asmagill or @cmsj ?

Also, possibly unrelated, I occasionally get the following error:

LuaSkin: hs.task terminationHandler block encountered an exception: *** -[NSConcreteFileHandle readDataOfLength:]: Resource temporarily unavailable

[latenitefilms]

Also getting this occasionally:

2017-05-10 13:27:10: 13:27:10 ** Warning: LuaSkin: hs.task:launch() Unable to launch hs.task process: -[__NSCFNumber fileSystemRepresentation]: unrecognized selector sent to instance 0x337

[asmagill]

1. your stream callback should return a boolean value (see help.hs.task.new), but having never used these I don't know if it's causing your problem.
2. i can't replicate the problem... For a shell script of:

   #! /bin/bash
   echo $@

I get the following:

> hs.task.new("/path/test.sh", function(...)
    print("exit", hs.inspect(table.pack(...)))
end, function(ud, ...)
    print("stream", hs.inspect(table.pack(...)))
    return true
end, { "1", [["aBCDEF"]]}):start()

hs.task: /path/test.sh 1 "aBCDEF" (0x6080008af568)
stream  { '1 "aBCDEF"\n', "",
  n = 2
}
exit    { 0, "", "",
  n = 3
}

In the stream callback, you can see the arguments and the second one clearly includes the quotes.

[latenitefilms]

Legend, thanks for the fast reply @asmagill !

Unfortunately, I'm still having issues.

This is what I now have in the script:

local compressorTask =  task.new(compressorPath, function(...)
    print("exit", hs.inspect(table.pack(...)))
end, function(...)
    print("stream", hs.inspect(table.pack(...)))
    return true
end, { "-batchname", wrapInQuotes("CommandPost Watch Folder"), "-jobpath", wrapInQuotes(file), "-settingpath", wrapInQuotes(selectedFile.settingFile), "-locationpath", wrapInQuotes(selectedFile.destinationPath .. filename)  } ):start()
log.df("compressorTask: %s", compressorTask)

This is what I get in the Console:

2017-05-10 13:35:27: 13:35:27   fcpwatch:     compressorTask: hs.task: /Applications/Compressor.app/Contents/MacOS/Compressor -batchname "CommandPost Watch Folder" -jobpath "/Users/latenitechris/Desktop/Watch Folder/Watch Folder/Compressor/Blue.mov" -settingpath "/Users/latenitechris/Library/Application Support/Compressor/Settings/HD 1080p.cmprstng" -locationpath "/Users/latenitechris/Desktop/Watch Folder/Watch Folder/Compressor Renders/Blue" (0x6080008a7d08)
2017-05-10 13:35:28: -- Loading extension: inspect
2017-05-10 13:35:28: stream { <userdata 1> -- hs.task: /Applications/Compressor.app/Contents/MacOS/Compressor -batchname "CommandPost Watch Folder" -jobpath "/Users/latenitechris/Desktop/Watch Folder/Watch Folder/Compressor/Blue.mov" -settingpath "/Users/latenitechris/Library/Application Support/Compressor/Settings/HD 1080p.cmprstng" -locationpath "/Users/latenitechris/Desktop/Watch Folder/Watch Folder/Compressor Renders/Blue" (0x6080008a7d08), 'Parameter error: Invalid Job path: "/Users/latenitechris/Desktop/Watch Folder/Watch Folder/Compressor/Blue.mov"; Path does not exist\n', "",
  n = 3
}
2017-05-10 13:35:28: exit   { 255, "", "",
  n = 3
}

However if I copy and paste this from the Console:

/Applications/Compressor.app/Contents/MacOS/Compressor -batchname "CommandPost Watch Folder" -jobpath "/Users/latenitechris/Desktop/Watch Folder/Watch Folder/Compressor/Blue.mov" -settingpath "/Users/latenitechris/Library/Application Support/Compressor/Settings/HD 1080p.cmprstng" -locationpath "/Users/latenitechris/Desktop/Watch Folder/Watch Folder/Compressor Renders/Blue"

...and run it in Terminal, it works fine.

[knu]

I don't think you need to pass quotes in the first place. Quotes are meant to help the shell (/bin/sh) split a command line string into arguments, and NSTask just takes arguments as an array of strings, so you don't need quotation.

[asmagill]

He may have a point... usually quotes are included to prevent spaces from breaking up arguments but the actual script never gets them.

From my example above, if I do ./test.sh 1 "abc" from the Terminal, I see 1 abc. To get the quotes, I have to do ./test.sh 1 "\"abc\"".

[asmagill]

As to the exceptions, I don't know... hs.task was written by @cmsj, and while I've glanced at it a few times to review or to figure out how he solved something, I've never really studied it in depth.

[latenitefilms]

LEGEND! Got it in one @knu!

Yes, I was using quotes prevent spaces from breaking up arguments - but it seems with hs.task arguments you don't need to worry about it!

Maybe something to add to the documentation?

Thanks heaps @knu & @asmagill !