Re: [hylafax-users] modem configuration

[Lee Howard <faxguy@xxxxxxxxxxxxxxxx>]

Jean-Pierre Radley wrote:

> And sure enough, here are lines 34-37 in the modem's config file:
>
>   Class1PPMWaitCmd:       "<delay\0727>"  # \072 == :  to avoid awk problem
>   Class1TCFWaitCmd:       "<delay\0727>"
>   Class1EOPWaitCmd:       "<delay
>   Class1SwitchingCmd:     "<delay\0727>"  # assumption: +FRS not supported
>
> I assume that fax addmodem put those lines there, since I certainly
> didn't type them.
>
> Something clearly is missing on line 36.  What?
>  

Normally it's:

 Class1EOPWaitCmd:  "<delay:9>"

or

 Class1EOPWaitCmd:  "<delay\0729>"

> And what is the awk problam that the use of \072 for ':' is allegedly
> avoiding?
>  

Awk, which is used by faxaddmodem to create the modem config file, uses 
":" as a delimiter, because that's how the config item is separated from 
the value... like this:

  ConfigItem: value

When you have a colon in the value field, like this:

 ConfigItem: some:value

You then have to instruct any config file parsers to use the *first* 
colon as the delimiter only.  This is easy to do in C++, but there isn't 
a portable way to do it in awk.  So the \072 is a workaround since \072 
means the same thing as ":" in the C++ parser but in the awk parser it 
isn't parsed as a delimiter.

Lee.

____________________ HylaFAX(tm) Users Mailing List _______________________
 To subscribe/unsubscribe, click http://lists.hylafax.org/cgi-bin/lsg2.cgi
On UNIX: mail -s unsubscribe hylafax-users-request@xxxxxxxxxxx < /dev/null
 *To learn about commercial HylaFAX(tm) support, mail sales@xxxxxxxxx*