samba - Aug 2004 - Can't print properly through server, only direct client->printer

At 2:57 am +1000 6/7/04, Alex Satrapa wrote:
>What happens if you change the line to:
>
>     print command = grep -v '^[0-9][0-9]* *VM\?$' ...
Then I replied :
>It would have to be '^[0-9][0-9]* *VM\?^M$', but it didn't seem
to
>match that. I think the chances of having a line that starts with 
>that pattern is pretty remote, especially when you consider that it 
>is Postscript code (or what the MS system passes for Postscript !) 
>rather than raw text.
Well I had the techie in recently for some other work and we had a go 
at this problem. Well in one of those 'Homer-esque' Dohhh moments we 
found out the problem ....

Anyway, in case it helps anyone else, we had the line :

print command = grep -v '^[0-9]* *VM\?' <%s >%s-2 ; rm %s ; lpr
-P%p
-o raw %s-2

in our smb.conf file. This is to do away with the test MS do in the 
postscript file to see how much memory the printer has and not print 
the job if MS decide the printer can't do it (I've yet to see a job 
actually fail).

What this should do (or more correctly, what I intended it to do) is 
delete any lines that start with some digits, some spaces, and the 
literal "VM\?". Once we realised what the problem was and checked 
again, I found that this also matched lines like :

3V)_5qZ$%5r88#qrUKaWQ9d>)o\)#Gn,;eDpH2$<qp4]kqY>7h>5e3apA4FPq"XOYo_J(XoDeC]

and

9VL@hY.WEXoDeL^pA+CXo)SFQp&+FcoCr(NhoYo4!l;X`q8**G!l2XhrPSKMqS<3J_tq=I`pq"I

These lines are part of the image data for bitmapped images on the page.

Altering the match to '^[0-9][0-9]* VM\?' seems to have fixed the 
problem. However I'm curious as to why the two lines above were 
matched when they don't even include the letters 'VM' ?

Simon




And for the benefit of anyone searching the archives ...

The message this is designed to get rid of is :
>This job requires more memory than is available in this printer.
>Try one or more of the following, and then print again:
>For the output format, choose Optimize For Portability.
>In the Device Settings page, make sure the Available PostScript 
>Memory is accurate.
>Reduce the number of fonts in the document.
>Print the document in parts.
-- 
Simon Hobson MA MIEE, Technology Specialist
Colony Gift Corporation Limited
Lindal in Furness, Ulverston, Cumbria, LA12 0LD
Tel 01229 461100, Fax 01229 461101

Registered in England No. 1499611
Regd. Office : 100 New Bridge Street, London, EC4V 6JA.

I read ^[0-9]* *VM\? as
match 0 or more occurances of a digit at the beginning of a line
match zero or more occurances of a space
match a V
optionally match one M (shell interpretive issues with backslash and ?)
3V)_ and 9VL@ both meet that criteria.

rather
^[0-9]+ +VM\\[?]
if you're looking for
0 VM\?

I find it helpful to eliminate shell issues by making special characters 
in a class
       A regular expression may be followed by one of several repetition 
oper-
       ators:
       ?      The preceding item is optional and matched at most once.
       *      The preceding item will be matched zero or more times.
       +      The preceding item will be matched one or more times.

Simon Hobson wrote:
> print command = grep -v '^[0-9]* *VM\?' <%s >%s-2 ; rm %s ;
lpr -P%p
> -o raw %s-2
>
> in our smb.conf file. This is to do away with the test MS do in the 
> postscript file to see how much memory the printer has and not print 
> the job if MS decide the printer can't do it (I've yet to see a job
> actually fail).
>
> What this should do (or more correctly, what I intended it to do) is 
> delete any lines that start with some digits, some spaces, and the 
> literal "VM\?". Once we realised what the problem was and checked
> again, I found that this also matched lines like :
>
>
3V)_5qZ$%5r88#qrUKaWQ9d>)o\)#Gn,;eDpH2$<qp4]kqY>7h>5e3apA4FPq"XOYo_J(XoDeC]
>
>
> and
>
>
9VL@hY.WEXoDeL^pA+CXo)SFQp&+FcoCr(NhoYo4!l;X`q8**G!l2XhrPSKMqS<3J_tq=I`pq"I
>
>
> These lines are part of the image data for bitmapped images on the page.
>
> Altering the match to '^[0-9][0-9]* VM\?' seems to have fixed the 
> problem. However I'm curious as to why the two lines above were 
> matched when they don't even include the letters 'VM' ?
>
> Simon
>
>
>
>
> And for the benefit of anyone searching the archives ...
>
> The message this is designed to get rid of is :
>
>> This job requires more memory than is available in this printer.
>> Try one or more of the following, and then print again:
>> For the output format, choose Optimize For Portability.
>> In the Device Settings page, make sure the Available PostScript 
>> Memory is accurate.
>> Reduce the number of fonts in the document.
>> Print the document in parts.
>
>