[Gambas-user] using 2>redirect with Exec?

[Brian G]

I added a text area called Errormsg to your project, and here is the code to get error messages and process them from your app: 
' Gambas class file 

Extern dup2(OldFD As Integer, newfd As Integer) In "libc:6" 
Private Writer As File 
Private Reader As File 
Private restore As File 
Public Sub _new() 
Writer = Open Pipe "/tmp/testpipeout" For Write 
restore = File.Err 
dup2(Writer.handle, 2) 
Reader = Open Pipe "/tmp/testpipeout" For Read Watch 
End 
Public Sub _free() 
Close Writer 
Close Reader 
dup2(restore.handle, 2) 
End 
Public Sub Form_Close() 
Quit 0 
End 
Public Sub file_read() 
Dim buffer As String 
buffer = Read #Last, -Lof(Last) 
ErrorMsgs.text &= "From Error Handler :" & Quote(buffer) & "\n" 
ErrorMsgs.Refresh() 
End 
Public Sub Button1_Click() 
Print "Something" 
Wait 
End 

"Failure is the key to success; 
each mistake teaches us something" .. Morihei Ueshiba 
Brian G 

----- On Aug 8, 2021, at 2:43 AM, Bruce Steers <bsteers4 at gmail.com> wrote: 

> oooh , that's brilliant , Cheers Brian :)
> I removed the dup2(dummy.Handle, 1) as it's only the gtk warnings i want to
> suppress.
> Now i just have to figure out how to read the error text as it comes through and
> show anything that's not a gtk message.

> almost had it using a pipe but it was flawed :(

> Thank you , much better than my app launching itself twice :)
> BruceS

> On Sun, 8 Aug 2021 at 03:06, Brian G < [ mailto:brian at westwoodsvcs.com |
> brian at westwoodsvcs.com ] > wrote:

>> Hi bruce,

>> Just notices this new thread

>> Replied to the other one but here it is again

>> Add this to the startup class of you application

>> Extern dup2(OldFD As Integer, newfd As Integer) In "libc:6"
>> Static Dummy As File
>> Static Public Sub _init()
>> dummy = Open "/dev/null" For Write
>> dup2(dummy.Handle, 1)
>> dup2(dummy.handle, 2)
>> End

>> No need for any other fiddles

>> "Failure is the key to success;
>> each mistake teaches us something" .. Morihei Ueshiba
>> Brian G

>> ----- On Aug 7, 2021, at 5:05 PM, Jussi Lahtinen < [
>> mailto:jussi.lahtinen at gmail.com | jussi.lahtinen at gmail.com ] > wrote:

>>> No, that is for terminal. You must use "Output to" and "Error To" keywords.
>>> [ http://gambaswiki.org/wiki/lang/errorto |
>>> http://gambaswiki.org/wiki/lang/errorto ]

>>> Jussi

>>> On Sun, Aug 8, 2021 at 2:29 AM Bruce Steers < [ mailto:bsteers4 at gmail.com |
>>> bsteers4 at gmail.com ] > wrote:

>>>> I cannot get redirect working with Exec. Is it possible?

>>>> Ie..
>>>> Shell "/run/mycommand 2>&1"
>>>> works as expected and redirects error text to stdout.

>>>> Exec ["/run/mycommand", "2>&1"]
>>>> does not redirect and only sends '2>&1' as an argument to /run/mycommand.

>>>> Is there a way to redirect with Exec or will i have to Shell it?

>>>> For some reason i am under the impression it is better to use Exec over Shell if
>>>> possible?

>>>> Thanks in advance
>>>> BruceS

>>>> ----[ [ http://gambaswiki.org/wiki/doc/netiquette |
>>>> http://gambaswiki.org/wiki/doc/netiquette ] ]----

>>> ----[ [ http://gambaswiki.org/wiki/doc/netiquette |
>>> http://gambaswiki.org/wiki/doc/netiquette ] ]----

>> ----[ [ http://gambaswiki.org/wiki/doc/netiquette |
>> http://gambaswiki.org/wiki/doc/netiquette ] ]----

> ----[ http://gambaswiki.org/wiki/doc/netiquette ]----
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