[dev] Ideas needed - progression widget / shell command

[Jan Schneider]

Zitat von Mathieu CLABAUT <mathieu.clabaut@free.fr>:

>   The dirty (but working) way is to do something like :
>     ob_end_flush(); $res=system("$exec_args 2>&1",$retval);
>   in order to dump the output of the command on the web page (being sure
>   that their is no table opened in the current web page, which would
>   prevent HTML to be rendered before the end of the execution in most
>   browsers).

But you can't depend on the webserver to really send the output generated 
by your script immediately to the browser. There are definitely buffer 
issues you have to consider.
 
>   My question is :
>    Does somebody know/imagine/have a nicer way to give a feedback to the
>    user (something like a background process filtering mkisofs output,
>    and sending only relevant information to an auto-refreshing web page,
>    or to some javascript.... ?)

Javascript is possible but you must communicate to the process in any way. 
One solution would be that you call your process nohup and then reload the 
page subsequently but only ask the process for its status. If this is 
possible at all.
Another way would be to use a hidden frame that reloads permanently and 
that changes progress indicator on the "main" screen with javascript. But 
once again you must find a way to gather status information from the 
running process.

Jan.

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