B4J Question jshell help

Carlos Mojica said:

I want to execute the following command in linux

mediainfo --Output="Video;%Duration%" /Agenda/18.mp4

to obtain the duration of a video file, its works in the command line, but in B4J I cannot find how to. I have tryed

B4X:

Dim params As List
                    params.Initialize
                    params.Add("--Output=""Video;%Duration%""")
                    params.Add("/home/cmojica/ServidorChunche/Files/1/Agenda/18.mp4")
                    she.InitializeDoNotHandleQuotes("she", "mediainfo ", params)

B4X:

she.InitializeDoNotHandleQuotes("she", "mediainfo ", Array("--Output=""Video;%Duration%""", "/home/cmojica/ServidorChunche/Files/1/Agenda/18.mp4"))

but nothing, How should I pass the parameters?

Click to expand...

Daestrum said:

I would suggest first trying without the space after the program name

B4X:

she.InitializeDoNotHandleQuotes("she", "mediainfo", params) ' remove the space from this line

Are you checking success in the Shell_Completed(…) sub ?

also use SmartStrings it makes quoting things much easier SmartString $" …. "$
eg,

B4X:

someString = $"now this string can have " and ' in it without using """$

One final stupid sounding question - You are calling she.Run(-1) after the Initialize?

Click to expand...

Dim she As Shell
Dim Result As ShellSyncResult

Dim params As List
params.Initialize
params.Add($"--Output="Video;%Duration%""$)
params.Add("/home/cmojica/ServidorChunche/Files/1/Agenda/18.mp4")
she.InitializeDoNotHandleQuotes("she", "mediainfo", params)
For i = 0 To she.Arguments.Length - 1 '<--just to verify the params, they are OK
     Log(she.Arguments(i))                           
Next
Log(she.Executable)               
Result = she.RunSynchronous(2000)
Log("resultado2: " & Result.StdOut)