%!
% lib/ehandler.ps -- Downloaded Error Break-page handler
% GOVERNMENT END USERS: See Notice file in TranScript library directory
% -- probably /usr/lib/ps/Notice
% RCSID: $Header: ehandler.ps,v 2.2 87/11/17 16:39:49 byron Rel $
% assumes serverloop password is the default one
/$brkpage where
{pop(Error Handler in place - not loaded again\n)print flush stop}
{serverdict begin statusdict begin 0000 checkpassword
 {
% (Error Handler downloaded.\n)print
flush 0000 exitserver}
 {(Bad Password on loading error handler!!!\n)print flush stop}ifelse
}ifelse
/$brkpage 64 dict def $brkpage begin
/prnt
 {dup type/stringtype ne{=string cvs}if dup length 6 mul/tx exch def/ty 10 def
  currentpoint/toy exch def/tox exch def 1 setgray newpath
  tox toy 2 sub moveto 0 ty rlineto tx 0 rlineto 0 ty neg rlineto
  closepath fill tox toy moveto 0 setgray show}bind def
/nl{currentpoint exch pop lmargin exch moveto 0 -10 rmoveto}def
/=={/cp 0 def typeprint nl}def
/typeprint{dup type exec}readonly def
/lmargin 72 def
/rmargin 72 def
/tprint
   {dup length cp add rmargin gt{nl/cp 0 def}if
    dup length cp add/cp exch def prnt}readonly def
/cvsprint{=string cvs tprint( )tprint}readonly def
/integertype{cvsprint}readonly def
/realtype{cvsprint}readonly def
/booleantype{cvsprint}readonly def
/operatortype{(--)tprint =string cvs tprint(-- )tprint}readonly def
/marktype{pop(-mark- )tprint}readonly def
/dicttype{pop(-dictionary- )tprint}readonly def
/nulltype{pop(-null- )tprint}readonly def
/filetype{pop(-filestream- )tprint}readonly def
/savetype{pop(-savelevel- )tprint}readonly def
/fonttype{pop(-fontid- )tprint}readonly def
/nametype{dup xcheck not{(/)tprint}if cvsprint}readonly def
/stringtype
 {dup rcheck{(\()tprint tprint(\))tprint}{pop(-string- )tprint}ifelse
 }readonly def
/arraytype
 {dup rcheck{dup xcheck
  {({)tprint{typeprint}forall(})tprint}
  {([)tprint{typeprint}forall(])tprint}ifelse}{pop(-array- )tprint}ifelse
 }readonly def
/packedarraytype
 {dup rcheck{dup xcheck
  {({)tprint{typeprint}forall(})tprint}
  {([)tprint{typeprint}forall(])tprint}ifelse}{pop(-packedarray- )tprint}ifelse
 }readonly def
/courier/Courier findfont 10 scalefont def
end %$brkpage
errordict/handleerror
 {systemdict begin $error begin $brkpage begin newerror
   {/newerror false store 
    vmstatus pop pop 0 ne{grestoreall}if initgraphics courier setfont
    lmargin 720 moveto(ERROR: )prnt errorname prnt
    nl(OFFENDING COMMAND: )prnt/command load prnt
    $error/ostack 
    known{nl nl(STACK:)prnt nl nl $error/ostack get aload length{==}repeat}if
    systemdict/showpage get exec(%%[ Error: )print
    errorname =print(; OffendingCommand: )print/command 
    load =print( ]%%)= flush}if end end end}
dup 0 systemdict put dup 4 $brkpage put bind readonly put