eap@bu-it.bu.edu (Eric A. Pearce) (05/17/91)
(I don't know too much about PostScript, so please bear with me)
I'm trying to modify the "breakpage" for a DEC LPS-20 TCP/IP
Printserver. It's just a text file that is downloaded from a normal
Unix machine for every job. The printer expects to find a procedure
called "Banner" in the breakpage. I have a bitmap that prints fine
in a "standalone" program, but when I enclose it in a procedure and
try to call it, I get "++rangecheck: Argument out of bounds - offending
command is get". Am I exceeding some limit of the stack since it's
now having to put the whole bitmap on it as opposed to just reading it
from a file and executing it right away? My next idea was to enclose
it in "[]" brackets, which worked, but my other functions failed to
produce any output unless they were also enclosed in square brackets.
The breakpage is expected to get job specific information from the
printer at run time, when I enclosed this procedure in "[]" (trying to
get it to show something), i.e.
/CHostName exch def % to get hostname from printer
I get "stackunderflow: Operand stack underflow - offending command is exch"
I have a "Title" procedure that makes some grey bars, the "RealBanner"
procedure prints out job-specific data and the "Seal", which is the
bitmap of the University seal.
This is frustrating since I have all the components working fine by
themselves, but they break when called from the same procedure.
I assume the real problem is trying to use the in-line bitmap data
in a procedure?
This the bitmap part of the job:
%!
/Banner {
Title
RealBanner
Seal
showpage
} def
/Seal {
/rlestr1 1 string def
/rlestr 128 string def
/readrlestring {
currentfile rlestr1 readhexstring pop 0 get
dup 127 le {
currentfile rlestr 0 4 3 roll 1 add getinterval
readhexstring pop
} {
256 exch sub dup
currentfile rlestr1 readhexstring pop 0 get
exch 0 exch 1 exch 1 sub { rlestr exch 2 index put } for
pop rlestr exch 0 exch getinterval
} ifelse
} bind def
445 662 translate % move to lower left corner of box
63 63 scale % scale box
264 265 1 % width height bits/sample
[ 264 0 0 -265 0 265 ] % transformation matrix
{ readrlestring } % proc
image
80ffeeff04fe0000003fe5ff00fefb00003fe6ff00c0fb000003e7ff00f8
.
. <stuff deleted>
.
e7ff00c0fb000003e6ff00fefb00003fe4ff038000007ff2ff
} def
Thanks in advance
-e
--
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Eric Pearce eap@bu-it.bu.edu Boston University Information Technology
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