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Redirect output into memory?
Posted: Mon Oct 10, 2005 7:58 pm
by Beach
Rings posted an example of how to redirect output from a DOS app into memory here:
viewtopic.php?t=3704 and it works fine.. on Windows..
Is there a way to do this with Linux? I know I can pipe the output to a file and read it but I was hoping for a way similar to Rings solution. I thought I read that the newer versions of PB would be able to do this... hopefully I was not dreaming...
Posted: Tue Oct 11, 2005 1:48 am
by freak
It simpler than on Windows actually...
Code: Select all
Command$ = "df -h"
Pipe = popen_(Command$, "r")
If Pipe
*Buffer = AllocateMemory(2000)
If *Buffer
Repeat
result = fgets_(*Buffer, 2000, Pipe)
If result
Debug PeekS(*Buffer)
EndIf
Until result = 0
EndIf
pclose_(Pipe)
Else
Debug "Error"
EndIf
You can replace the fgets_() with any other libc command that works on streams
if you prefer another reading method.
Posted: Tue Oct 11, 2005 1:55 am
by Beach
Thank you very much!
Posted: Sat Nov 19, 2005 4:09 pm
by Nik
How to write to this pipe?
Posted: Sat Nov 19, 2005 8:29 pm
by olejr
Shange the "r" to "w":
Code: Select all
Pipe = popen_(Command$, "w") ; "w" = Write, "r" = Read
Then do something like:
Code: Select all
*Buf = AllocateMemory(2000)
If *Buf
PokeS(*Buf, "test string")
res = fputs_(*Buf, Pipe) ; fputs_ = PutString (without newlinechar)
; puts_ = PutString.. (newlinechar)
EndIf
Have no idead if it will work, but in theory it should..
Here's a link with some docs to the Linux api functions..
http://www.opengroup.org/onlinepubs/007908799/
Posted: Sat Apr 01, 2006 4:30 pm
by WishMaster
freak wrote:It simpler than on Windows actually...
You can replace the fgets_() with any other libc command that works on streams
if you prefer another reading method.
May I use your example in a GPL/LGPL program?
Posted: Sat Apr 01, 2006 4:50 pm
by freak
why not ?
Posted: Sat Apr 01, 2006 5:10 pm
by WishMaster
Thanks.