EXEC is a wonderful thing, lighter than SHELL, but it needs things
passed as elements of a string array and that is making for some ugly code.
Say for example you want to play two videos as a playlist in VLC, in
exec the command might look like this;
EXEC["vlc","--intf","rc", "Video1.avi","Video2.avi"]
But what if you had different quantities of videos to play, lets say
next time you needed to play 4 videos? How would you use EXEC to do this?
I thought of building the string and embedding the quotes in it like this;
ExecString = chr$(34)& "vlc" & chr$(34) & "," & chr$(34) & "--intf" &
chr$(34) & "," & chr$(34) & "rc"& chr$(34) & ","
For X= 0 TO sFile.Count - 1
ExecString = ExecString & chr$934) & sFile[X] & chr$(34)
IF X < sFile.Count -1 then
ExecString = ExecString & ","
End IF
NEXT
Which would result in a string that looks like this;
"vlc", "--intf", "rc", "video1.avi", "video2.avi"
Nope. It sees the one string as one element when what I want is the
contents of the string to be inserted as multiple elements.
At the moment I am fetching the video file names from a directory
listing, splitting that up into an array, then checking the number of
elements in the array and using a case statement to do the work...
SELECT CASE sFile.Count
CASE 1
mpProcessHandle = EXEC ["vlc", "--intf", "rc", sFile[0]]
FOR INPUT OUTPUT AS "VLC"
CASE 2
mpProcessHandle = EXEC ["vlc", "--intf", "rc", sFile[0],
sFile[1]] FOR INPUT OUTPUT AS "VLC"
CASE 3
mpProcessHandle = EXEC ["vlc", "--intf", "rc", sFile[0],
sFile[1], sFile[2]] FOR INPUT OUTPUT AS "VLC"
CASE 4
mpProcessHandle = EXEC ["vlc", "--intf", "rc", sFile[0],
sFile[1], sFile[2]] FOR INPUT OUTPUT AS "VLC"
END SELECT
It ain't pretty. "sFile" is a string array derived from another string
that contains the names of videos which in my case are delimited by
spaces. Definetly the brute-force/bulldozer approach, big, ugly, and
cumbersome, but it does work. Does anyone else know of a more elegant
solution?
Regards
Steve.
------------------------------------------------------------------------------
Special Offer -- Download ArcSight Logger for FREE!
Finally, a world-class log management solution at an even better
price-free! And you'll get a free "Love Thy Logs" t-shirt when you
download Logger. Secure your free ArcSight Logger TODAY!
http://p.sf.net/sfu/arcsisghtdev2dev
_______________________________________________
Gambas-user mailing list
Gambas-user@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/gambas-user
