Calling all batch files pro's

[Elmo Putney]

For the main part I use Radio Times for my freeview XML guide data, but I also have a few French channels via DVB-S that come from some french tv guide web site.

The French website can be a bit flakey and sometimes produces an empty xml tv guide file. My update epg batch file grabs the data then copies the new data over the top of the old data.

so its something like:

Code:

"C:\epg\xmltv535\xmltv.exe" tv_grab_fr -slow --config-file C:\epg\sat.con --output C:\epg\sat0.xml
copy C:\epg\sat0.xml C:\epg\sat.xml

I want to stop the final copy if the filesize is less than say 20kb, because this means there is no guide data in the file and I end up with no EPG data and I'd rather have the previous days download in the guide than nothing at all.

So how do I do that in a batch file?

[garymeds]

do a directory listing to a text file (dir > dir.txt), then use a for loop to scan through each line (using delims to seperate the variables) and check for your file name, the size.

if it helps, i'd install powershell and use that - it's brilliant at doing stuff like this and isn't hard to get to grips with.

check here for a quick 1 liner which arranges a directory by size so you're on the right track with get-childitem <dir> (get-help get-childitem gives details..)

http://www.microsoft.com/technet/scriptc...bject.mspx

[bgowland]

I haven't tried this...

Code:

"C:\epg\xmltv535\xmltv.exe" tv_grab_fr -slow --config-file C:\epg\sat.con --output C:\epg\sat0.xml
for %%R in (C:\epg\sat0.xml) do if %%~zR lss 20000 goto :EOF
copy C:\epg\sat0.xml C:\epg\sat.xml

Actually I knicked it from a batch file posted by gEd here...

http://forums.nextpvr.com/showthread.php?t=25695

Cheers,
Brian

[Elmo Putney]

do a directory listing to a text file (dir > dir.txt), then use a for loop to scan through each line (using delims to seperate the variables) and check for your file name, the size.

Good lord, this is worse than being at work writing MatLab m files..

for %%R in (C:\epg\sat0.xml) do if %%~zR lss 20000 goto :EOF

Thats what I need when I get home, someone to think for me....now if you fancy coming over to cook my dinner....

[Gedanken]

Lots of useful macros in there.

From 'help for'

In addition, substitution of FOR variable references has been enhanced.
You can now use the following optional syntax:
%~I - expands %I removing any surrounding quotes (")
%~fI - expands %I to a fully qualified path name
%~dI - expands %I to a drive letter only
%~pI - expands %I to a path only
%~nI - expands %I to a file name only
%~xI - expands %I to a file extension only
%~sI - expanded path contains short names only
%~aI - expands %I to file attributes of file
%~tI - expands %I to date/time of file
%~zI - expands %I to size of file
%~$PATH:I - searches the directories listed in the PATH
environment variable and expands %I to the
fully qualified name of the first one found.
If the environment variable name is not
defined or the file is not found by the
search, then this modifier expands to the
empty string