ref: 7134d62ccbb32c783de67d26907e4e856c48f29c
dir: /sys/lib/ghostscript/gs_init.ps/
% Copyright (C) 1989-2004 artofcode LLC. All rights reserved.
%
% This software is provided AS-IS with no warranty, either express or
% implied.
%
% This software is distributed under license and may not be copied,
% modified or distributed except as expressly authorized under the terms
% of the license contained in the file LICENSE in this distribution.
%
% For more information about licensing, please refer to
% http://www.ghostscript.com/licensing/. For information on
% commercial licensing, go to http://www.artifex.com/licensing/ or
% contact Artifex Software, Inc., 101 Lucas Valley Road #110,
% San Rafael, CA 94903, U.S.A., +1(415)492-9861.
% $Id: gs_init.ps,v 1.120 2005/10/07 19:46:35 ray Exp $
% Initialization file for the interpreter.
% When this is run, systemdict is still writable.
% Comment lines of the form
% %% Replace <n> <file(s)>
% indicate places where the next <n> lines should be replaced by
% the contents of <file(s)>, when creating a single merged init file.
% The interpreter can call out to PostScript code. All procedures
% called in this way, and no other procedures defined in these
% initialization files, have names that begin with %, e.g.,
% (%Type1BuildChar) cvn.
% Check the interpreter revision. NOTE: the interpreter code requires
% that the first non-comment token in this file be an integer.
853
dup revision ne
{ (gs: Interpreter revision \() print revision 10 string cvs print
(\) does not match gs_init.ps revision \() print 10 string cvs print
(\).\n) print flush //null 1 .quit
}
if pop
% Acquire userdict, and set its length if necessary.
/userdict where
{ pop userdict maxlength 0 eq }
{ true }
ifelse
systemdict exch
{ % userdict wasn't already set up by iinit.c.
dup /userdict
currentdict dup 200 .setmaxlength % userdict
.forceput % userdict is local, systemdict is global
}
if begin
% Define dummy local/global operators if needed.
systemdict /.setglobal known
{ true .setglobal
}
{ /.setglobal { pop } bind def
/.currentglobal { false } bind def
/.gcheck { pop false } bind def
}
ifelse
% Define .languagelevel if needed.
systemdict /.languagelevel known not { /.languagelevel 1 def } if
% Optionally choose a default paper size other than U.S. letter.
% The default page size for many devices is set at compile time to
% letter, but this can be changed to A4 although this is rarely done.
% Some devices such as bbox have a different default page size,
% and should not be set to A4 or letter.
% When ghostscript is used in countries that use the international
% standard page size A4 rather than US letter, the page size of
% devices that default to letter or A4 can be changed by setting
% DEFAULTPAPERSIZE.
% /DEFAULTPAPERSIZE (a4) def
% Turn on array packing for the rest of initialization.
true setpacking
% Define the old MS-DOS EOF character as a no-op.
% This is a hack to get around the absurd habit of MS-DOS editors
% of adding an EOF character at the end of the file.
<1a> cvn { } def
% Acquire the debugging flags.
currentdict /DEBUG known /DEBUG exch def
% if DEBUG is set, set ALL of the subset debugging flags
mark % '[' isn't defined yet
/CCFONTDEBUG % Compiled Fonts
/CFFDEBUG % CFF Fonts
/CMAPDEBUG % CMAP
/DOCIEDEBUG % CIE color
/EPSDEBUG % EPS handling
/FAPIDEBUG % Font API
/INITDEBUG % Initialization
/PDFDEBUG % PDF Interpreter
/PDFOPTDEBUG % PDF Optimizer (Linearizer)
/PDFWRDEBUG % PDF Writer
/SETPDDEBUG % setpagedevice
/STRESDEBUG % Static Resources
/TTFDEBUG % TTF Fonts
/VGIFDEBUG % ViewGIF
/VJPGDEBUG % ViewJPEG
/RESMPDEBUG % Resource map
counttomark array astore exch pop % ']' isn't defined yet
{ dup currentdict exch known DEBUG or def } forall
currentdict /PDFSTEP known /PDFSTEP exch def
% if PDFSTEP is on, turn on PDFDEBUG
PDFSTEP { /PDFDEBUG true def } if
/VMDEBUG
INITDEBUG {{print mark
systemdict /level2dict known
{ .currentglobal dup false .setglobal vmstatus
true .setglobal vmstatus 3 -1 roll pop
6 -2 roll pop .setglobal
}
{ vmstatus 3 -1 roll pop
}
ifelse usertime 16#fffff and counttomark
{ ( ) print ( ) cvs print }
repeat pop
( ) print systemdict length ( ) cvs print
( ) print countdictstack ( ) cvs print
( <) print count ( ) cvs print (>\n) print flush
}}
{{pop
}}
ifelse
def
currentdict /BATCH known /BATCH exch def
currentdict /DELAYBIND known /DELAYBIND exch def
currentdict /DISKFONTS known /DISKFONTS exch def
currentdict /DOINTERPOLATE .knownget { /INTERPOLATE exch def } if
currentdict /ESTACKPRINT known /ESTACKPRINT exch def
currentdict /FAKEFONTS known /FAKEFONTS exch def
currentdict /FIXEDMEDIA known /FIXEDMEDIA exch def
currentdict /FIXEDRESOLUTION known /FIXEDRESOLUTION exch def
currentdict /LOCALFONTS known /LOCALFONTS exch def
currentdict /JOBSERVER known /JOBSERVER exch def
currentdict /NOBIND known /NOBIND exch def
/.bind /bind load def
NOBIND { /bind { } def } if
currentdict /NOCACHE known /NOCACHE exch def
currentdict /NOCCFONTS known /NOCCFONTS exch def
currentdict /NOCIE known /NOCIE exch def
currentdict /NOPSICC known /NOPSICC exch def
currentdict /NODISPLAY known not /DISPLAYING exch def
currentdict /NOFONTMAP known /NOFONTMAP exch def
currentdict /NOFONTPATH known /NOFONTPATH exch def
currentdict /NOGC known /NOGC exch def
currentdict /NOINTERPOLATE .knownget { /INTERPOLATE exch not def } if
currentdict /NOOUTERSAVE known /NOOUTERSAVE exch def
currentdict /NOPAGEPROMPT known /NOPAGEPROMPT exch def
currentdict /NOPAUSE known /NOPAUSE exch def
currentdict /NOPLATFONTS known /NOPLATFONTS exch def
currentdict /NOPROMPT known /NOPROMPT exch def
currentdict /NOTRANSPARENCY known /NOTRANSPARENCY exch def
currentdict /DOPS known /DOPS exch def
currentdict /NOSUBSTDEVICECOLORS known /NOSUBSTDEVICECOLORS exch def
% The default value of ORIENT1 is true, not false.
currentdict /ORIENT1 known not { /ORIENT1 true def } if
currentdict /OSTACKPRINT known /OSTACKPRINT exch def
currentdict /OUTPUTFILE known % obsolete
{ /OutputFile /OUTPUTFILE load def
currentdict /OUTPUTFILE .undef
} if
currentdict /QUIET known /QUIET exch def
% DELAYSAFER is effectively the same as newer NOSAFER
currentdict /DELAYSAFER known { /DELAYSAFER true def /NOSAFER true def } if
/SAFER currentdict /NOSAFER known {
false
} {
currentdict /SAFER known
currentdict /PARANOIDSAFER known or % PARANOIDSAFER is equivalent
}
ifelse def
currentdict /SHORTERRORS known /SHORTERRORS exch def
currentdict /STRICT known /STRICT exch def
currentdict /TTYPAUSE known /TTYPAUSE exch def
currentdict /WRITESYSTEMDICT known /WRITESYSTEMDICT exch def
% Acquire environment variables.
currentdict /DEVICE known not
{ (GS_DEVICE) getenv { /DEVICE exch def } if } if
(START) VMDEBUG
% Open the standard files, so they will be open at the outermost save level.
(%stdin) (r) file pop
(%stdout) (w) file pop
(%stderr) (w) file pop
/.currentuserparams where {
pop mark
% The Adobe implementations appear to have very large maximum
% stack sizes. This turns out to actually make a difference,
% since some badly-behaved files include extremely long procedures,
% or construct huge arrays on the operand stack.
% We reset the stack sizes now so that we don't have to worry
% about overflowing the (rather small) built-in stack sizes
% during initialization.
/MaxDictStack 500
/MaxExecStack 5000
/MaxOpStack 50000
.dicttomark .setuserparams
} if
% Define a procedure for skipping over an unneeded section of code.
% This avoids allocating space for the skipped procedures.
% We can't use readline, because that imposes a line length limit.
/.skipeof % <string> .skipeof -
{ currentfile exch 1 exch .subfiledecode flushfile
} .bind def
% Define procedures to assist users who don't read the documentation.
userdict begin
/help
{ (Enter PostScript commands. '(filename) run' runs a file, 'quit' exits.\n)
print flush
} .bind def
end
% Define =string, which is used by some PostScript programs even though
% it isn't documented anywhere.
% Put it in userdict so that each context can have its own copy.
userdict /=string 256 string put
% Print the greeting.
/printgreeting
{ mark
product (Ghostscript) search
{ pop pop pop
(This software comes with NO WARRANTY: see the file PUBLIC for details.\n)
}
{ pop
}
ifelse
(\n) copyright
(\)\n) revisiondate 10 mod revisiondate 10 idiv 10 mod (-)
revisiondate 100 idiv 10 mod revisiondate 1000 idiv 10 mod (-)
revisiondate 10000 idiv ( \()
revision 10 mod
revision 100 mod 10 idiv (.)
revision 100 idiv ( )
product
counttomark
{ (%stdout) (w) file exch 0 .writecvp
} repeat pop
} .bind def
QUIET not { printgreeting flush } if
% Define a special version of def for making operator procedures.
/obind { % <name> <proc> obind <name> <oper>
1 index exch .makeoperator
} .bind def
/odef { % <name> <proc> odef -
1 index exch .makeoperator def
} .bind def
% Define a special version of def for storing local objects into global
% dictionaries. Like .forceput, this exists only during initialization.
/.forcedef { % <key> <value> .forcedef -
currentdict 3 1 roll .forceput
} .bind odef
% Define procedures for accessing variables in systemdict and userdict
% regardless of the contents of the dictionary stack.
/.systemvar { % <name> .systemvar <value>
//systemdict exch get
} .bind odef
/.userdict { % - .userdict <dict>
/userdict .systemvar
} .bind odef
/.uservar { % <name> .uservar <value>
.userdict exch get
} .bind odef
% If we're delaying binding, remember everything that needs to be bound later.
DELAYBIND NOBIND not and
{ .currentglobal false .setglobal
systemdict /.delaybind 1500 array .forceput
.setglobal
userdict /.delaycount 0 put
% When we've done the delayed bind, we want to stop saving.
% Detect this by the disappearance of .delaybind.
/bind
{ /.delaybind .systemvar dup length 0 ne
{ .delaycount 2 index put
.userdict /.delaycount .delaycount 1 add put
}
{ pop /.bind cvx exec
}
ifelse
} .bind def
} if
%**************** BACKWARD COMPATIBILITY ****************
/hwsizedict mark /HWSize //null .dicttomark readonly def
/copyscanlines { % <device> <y> <string> copyscanlines <substr>
0 3 1 roll 3 index //hwsizedict .getdeviceparams
exch pop exch pop aload pop 3 2 roll
0 exch //null exch .getbitsrect exch pop
} bind odef
currentdict /hwsizedict .undef
/getdeviceprops
{ //null .getdeviceparams
} bind odef
/.putdeviceprops
{ //null true counttomark 1 add 3 roll .putdeviceparams
dup type /booleantype ne
{ dup mark eq { /unknown /rangecheck } if
counttomark 4 add 1 roll cleartomark pop pop pop
/.putdeviceprops load exch signalerror
}
if
} bind odef
/.currentfilladjust { .currentfilladjust2 pop } bind odef
/.setfilladjust { dup .setfilladjust2 } bind odef
/.writecvs { 0 .writecvp } bind odef
%**************** DEPRECATED PROCEDURES ****************
%**************** DO NOT USE THESE IN NEW CODE ****************
/max { .max } bind def % use .max instead
/min { .min } bind def % use .min instead
/unread /.unread load def % use .peekstring instead
%**************** END OF BACKWARD COMPATIBILITY SECTION ****************
% Utility procedure to sort an array
% <array> <lt-proc> .sort <array>
/.sort {
1 index length 1 sub -1 1 {
2 index exch 2 copy get 3 copy % arr proc arr i arr[i] arr i arr[i]
0 1 3 index 1 sub {
3 index 1 index get % arr proc arr i arr[i] arr imax amax j arr[j]
2 index 1 index 10 index exec { % ... amax < arr[j]
4 2 roll
} if pop pop
} for % arr proc arr i arr[i] arr imax amax
4 -1 roll exch 4 1 roll put put
} for pop
} bind def
% Utility for removing all entries from a dictionary
/.PurgeDict % <dict> .PurgeDict -
{ { true
1 index { pop exch pop false exit
} forall
{ exit
} if
1 index exch undef
} loop
pop
} bind def
% Define predefined procedures substituting for operators,
% in alphabetical order.
userdict /#copies 1 put
% Adobe implementations don't accept /[ or /], so we don't either.
([) cvn
/mark load def
(]) cvn
{counttomark array astore exch pop} odef
% .beginpage is redefined if setpagedevice is present.
/.beginpage { } odef
% In LanguageLevel 3, copypage erases the page.
/copypage {
.languagelevel 3 ge
dup { 0 } { 1 } ifelse .endpage {
.currentnumcopies 1 index .outputpage
(>>copypage, press <return> to continue<<\n) .confirm
dup { erasepage } if
} if pop
systemdict /..page_default_spaces .knownget { //.PurgeDict exec } if
.beginpage
} odef
/currentmatrix {
.currentmatrix 6 index astore pop
} odef
% .currentnumcopies is redefined in Level 2.
/.currentnumcopies { #copies } odef
/setcolorscreen where { pop % not in all Level 1 configurations
/currentcolorscreen
{ .currenthalftone
{ { 60 exch 0 exch 3 copy 6 copy } % halftone - not possible
{ 3 copy 6 copy } % screen
{ } % colorscreen
}
exch get exec
} odef
} if
/currentscreen
{ .currenthalftone
{ { 60 exch 0 exch } % halftone - not possible
{ } % screen
{ 12 3 roll 9 { pop } repeat } % colorscreen
}
exch get exec
} odef
/.echo /echo load def
userdict /.echo.mode true put
/echo {dup /.echo.mode exch store .echo} odef
/.eexec_param_dict mark
/eexec true
/seed 55665
.dicttomark readonly def
/eexec {
% Rebind .currentresourcefile if it is the source for the eexec.
dup //.eexec_param_dict //filterdict /eexecDecode get exec
cvx exch .currentresourcefile eq
//systemdict begin { {exec} .execasresource } { exec } ifelse
% Only pop systemdict if it is still the top element,
% because this is apparently what Adobe interpreters do.
currentdict //systemdict eq { end } if
} odef
% .endpage is redefined if setpagedevice is present.
/.endpage { 2 ne } odef
% erasepage mustn't use gsave/grestore, because we call it before
% the graphics state stack has been fully initialized.
/erasepage
{ /currentcolor where
{ pop currentcolor currentcolorspace { setcolorspace setcolor } }
{ /currentcmykcolor where
{ pop currentcmykcolor { setcmykcolor } }
{ currentrgbcolor { setrgbcolor } }
ifelse
}
ifelse
currentoverprint false setoverprint 1 setgray .fillpage setoverprint
exec
} odef
% To satisfy the Genoa FTS, executive must be a procedure, not an operator.
/executive
{ { prompt
{ (%statementedit) (r) file } stopped
{ pop pop $error /errorname get /undefinedfilename eq
{ .clearerror exit } if % EOF
/handleerror .systemvar exec //null % ioerror??
}
if
cvx { .runexec } execute
} loop
} bind def
/filter
{ //filterdict 1 index .knownget
{ exch pop exec }
{ /filter load /undefined signalerror }
ifelse
} odef
% handleerror procedure as mentioned in the "Operators" section of the PLRM Section 8.2
% This invokes the handleerror procedure from errordict (unless we are running under a
% JOBSERVER where we want to always use a defined error handler (many error handlers in
% 'wild' PostScript files are broken and don't indicate the error in any useful fashion).
%
% We run the handleerror procedure using .internalstopped so that broken error handlers
% won't cause nested errors (Unexpected Error conditions).
/handleerror
JOBSERVER {
{ /errordict .systemvar /.GShandleerror get .internalstopped pop } bind % always use .GShandleerror.
} {
{ /errordict .systemvar /handleerror get .internalstopped pop } bind % PLRM standard errorhandling
} ifelse def
/identmatrix [1.0 0.0 0.0 1.0 0.0 0.0] readonly def
/identmatrix
{ dup 0 //identmatrix putinterval } odef
/languagelevel 1 def % gs_lev2.ps may change this
/makeimagedevice { false makewordimagedevice } odef
/matrix { 6 array identmatrix } odef
/pathbbox
{ false .pathbbox
} odef
% .promptmsg is redefined if the interpreter includes readline support.
/.promptmsg {
(GS) print
count 0 ne { (<) print count =only } if
(>) print flush
} bind def
/prompt { flush flushpage NOPROMPT not { .promptmsg } if } bind def
/pstack { 0 1 count 3 sub { index == } for } bind def
/putdeviceprops
{ .putdeviceprops { erasepage } if } odef
/quit { /quit load 0 .quit } odef
/run { dup type /filetype ne { (r) file } if
% We must close the file when execution terminates,
% regardless of the state of the stack,
% and then propagate an error, if any.
cvx .runexec
} odef
% Execute a file.
% Level 2 uses 2 .stop to clear the e-stack for a successful startjob:
% we detect that here, since we need to handle this even if we start out
% without job control in effect.
%
% What we push on the e-stack is the following to be executed in this order:
% <lit-file|fileproc> .runexec1 <lit-file|fileproc> .runexec2
/.runexec1 { % <file|fileproc> .runexec1 -
dup type /filetype ne { cvx exec } if
cvx //null 2 .stopped
% If we got back here from a startjob, just keep going.
% startjob replaces the null on the o-stack with a procedure
% to be executed when we get back here.
dup //null ne { exec true } { pop false } ifelse
} bind def
/.runexec2 { % <continue> <file|fileproc> .runexec2 -
exch {
.runexec
} {
dup type /filetype ne { cvx exec } if
closefile
} ifelse
} bind def
/.runexec { % <file|fileproc> .runexec -
cvlit /.runexec1 cvx 1 index /.runexec2 cvx 4 .execn
} bind def
% The following is only for compatibility with Adobe interpreters.
/setdash {
1 index length 11 gt { /setdash load /limitcheck signalerror } if
//setdash
} odef
/setdevice
{
.setdevice
{
mark
{ % Reset the halftone since the device may differ
currenthalftone
dup type /dicttype eq
{ sethalftone }
{ pop }
ifelse
}
stopped
cleartomark
erasepage
}
if
}
odef
/setlinecap {
dup 2 gt { /setlinecap load /rangecheck signalerror } if
.setlinecap
} odef
/setlinejoin {
dup 2 gt { /setlinejoin load /rangecheck signalerror } if
.setlinejoin
} odef
/setmatrix {
dup aload pop .setmatrix pop
} odef
/showpage {
0 .endpage .doneshowpage {
.currentnumcopies true .outputpage
(>>showpage, press <return> to continue<<\n) .confirm
initgraphics
currentoverprint false setoverprint 1 setcolor
.fillpage
setoverprint 0 setcolor
}
{ initgraphics } ifelse
systemdict /..page_default_spaces .knownget { //.PurgeDict exec } if
.beginpage
} odef
% Code output by Adobe Illustrator relies on the fact that
% `stack' is a procedure, not an operator!!!
/stack { 0 1 count 3 sub { index = } for } bind def
/start { BATCH { //null 0 .quit } { executive } ifelse } def
% Internal uses of stopped that aren't going to do a stop if an error occurs
% should use .internalstopped to avoid setting newerror et al.
/.internalstopped { //null 1 .stopped //null ne } bind def
/store { % Don't alter operands before completing.
1 index where { 2 index 2 index put pop pop } { def } ifelse
} odef
/.typenames mark .typenames counttomark packedarray exch pop def
/type {
//.typenames .type
} odef
currentdict /.typenames .undef
% When running in Level 1 mode, this interpreter is supposed to be
% compatible with PostScript "version" 54.0 (I think).
/version (54.0) readonly def
/.wheredict 10 dict def
/.where /where load def
/where {
//.wheredict 1 index .knownget { exec } { .where } ifelse
} odef
% internaldict is defined in systemdict, but the dictionary is allocated
% in local VM. However, the procedure must be global, since it is an
% "operator" and must be bind-able into global procedures.
% We make a procedure for creating it, since we must create a new one
% for each context with private local VM.
/.makeinternaldict {
.currentglobal true .setglobal
[ /dup .systemvar 1183615869 /eq .systemvar
[ /pop .systemvar //null ] cvx
false .setglobal
dup 1 10 dict .forceput % proc is global, dict is local
true .setglobal
[ /internaldict /cvx .systemvar /invalidaccess /signalerror cvx ] cvx
/ifelse .systemvar
] cvx executeonly
exch .setglobal
} odef
systemdict /internaldict dup .makeinternaldict .makeoperator
.forceput % proc is local, systemdict is global
% Move superexec to internaldict if superexec is defined.
currentdict /superexec .knownget {
1183615869 internaldict /superexec 3 -1 roll put
currentdict /superexec .undef
} if
% Define some additional built-in procedures (beyond the ones defined by
% the PostScript Language Reference Manual).
% Warning: these are not guaranteed to stay the same from one release
% to the next!
/concatstrings % (str1) (str2) concatstrings (str1str2)
{ exch dup length 2 index length add string % str2 str1 new
dup dup 4 2 roll copy % str2 new new new1
length 4 -1 roll putinterval
} bind def
/copyarray
{ dup length array copy } bind def
% Copy a dictionary per the Level 2 spec even in Level 1.
/.copydict % <fromdict> <todict> .copydict <todict>
{ dup 3 -1 roll { put dup } forall pop } bind def
/copystring
{ dup length string copy } bind def
/findlibfile {
.libfile { dup .filename pop exch true } { false } ifelse
} odef
/.growdictlength % get size for growing a dictionary
{ length 3 mul 2 idiv 1 add
} bind def
/.growdict % grow a dictionary
{ dup .growdictlength .setmaxlength
} bind def
/.growput % put, grow the dictionary if needed
{ 2 index length 3 index maxlength eq
{ 3 copy pop known not { 2 index .growdict } if
} if
put
} bind def
% .localvmarray may be an operator: see zsysvm.c.
/.localvmarray where {
pop
} {
/.localvmarray {
.currentglobal false .setglobal
exch array exch .setglobal
} bind def
} ifelse
/.localvmdict where {
pop
} {
/.localvmdict {
.currentglobal false .setglobal
exch dict exch .setglobal
} bind def
} ifelse
/.packtomark
{ counttomark packedarray exch pop } bind def
/ppstack
{ 0 1 count 3 sub { index === } for } bind def
/runlibfile
{ % We don't want to bind 'run' into this procedure,
% since run may get redefined.
findlibfile
{ exch pop /run .systemvar exec }
{ /undefinedfilename signalerror }
ifelse
} bind def
/selectdevice
{ finddevice setdevice .setdefaultscreen } bind def
/signalerror % <object> <errorname> signalerror -
{ /errordict .systemvar exch get exec } bind def
% Define the =[only] procedures. Also define =print,
% which is used by some PostScript programs even though
% it isn't documented anywhere.
/write=only {
.writecvs
} bind def
/write= {
1 index exch write=only (\n) writestring
} bind def
/=only { (%stdout) (w) file exch write=only } bind def
/= { =only (\n) print } bind def
/=print /=only load def
% Temporarily define == as = for the sake of runlibfile0.
/== /= load def
% The following procedures are documented.
/copydevice { % <device> copydevice <newdevice>
false .copydevice2
} odef
/finddevice { % <devicename> finddevice <device>
/devicedict .systemvar exch get
dup 1 get //null eq {
% This is the first request for this type of device.
% Create a default instance now.
% Stack: [proto null]
.currentglobal true .setglobal exch
dup dup 0 get copydevice 1 exch put
exch .setglobal
} if 1 get
} bind def
/findprotodevice { % <devicename> findprotodevice <protodevice>
/devicedict .systemvar exch get 0 get
} bind def
% Run a resource file. This allows us to distinguish resource objects
% from objects coming from input files.
userdict /.currentresourcefile //null put
/.execasresource { % <file> <proc|runfile> .execasresource -
/stopped .systemvar
/.currentresourcefile .uservar
% Stack: file proc -stopped- currfile
.userdict /.currentresourcefile 5 index cvlit put
2 .execn % stopped <file>
.userdict /.currentresourcefile 3 -1 roll put
{ stop } if
} bind def
/.runresource { % <file> .runresource -
{ /run .systemvar exec } .execasresource
} bind def
% Define procedures for getting and setting the current device resolution.
/gsgetdeviceprop % <device> <propname> gsgetdeviceprop <value>
{ 2 copy mark exch //null .dicttomark .getdeviceparams
dup mark eq % if true, not found
{ pop dup /undefined signalerror }
{ 5 1 roll pop pop pop pop }
ifelse
} bind def
/gscurrentresolution % - gscurrentresolution <[xres yres]>
{ currentdevice /HWResolution gsgetdeviceprop
} bind def
/gssetresolution % <[xres yres]> gssetresolution -
{ 2 array astore mark exch /HWResolution exch
currentdevice copydevice putdeviceprops setdevice
} bind def
% Define auxiliary procedures needed for the above.
/shellarguments % -> shell_arguments true (or) false
{ /ARGUMENTS where
{ /ARGUMENTS get dup type /arraytype eq
{ aload pop /ARGUMENTS //null store true }
{ pop false }
ifelse }
{ false } ifelse
} bind def
/.confirm {
DISPLAYING NOPAUSE not TTYPAUSE or and {
% Print a message (unless NOPAGEPROMPT or NOPROMPT is true)
% and wait for the user to type something.
% If the user just types a newline, flush it.
NOPAGEPROMPT NOPROMPT or { pop } { print flush } ifelse
.confirmread
} {
pop
} ifelse
} bind def
/.confirmread {
TTYPAUSE {
(/dev/tty) (r) file dup read pop pop closefile
} {
.echo.mode false echo
(%stdin) (r) file dup read {
dup (\n) 0 get eq { pop pop } { unread } ifelse
} {
pop
} ifelse echo
} ifelse
} bind def
% Define the procedure used by .runfile, .runstdin and .runstring
% for executing user input.
% This is called with a procedure or executable file on the operand stack.
/.execute { % <obj> .execute <stopped>
stopped $error /newerror get and
{ /handleerror .systemvar exec flush true } { false } ifelse
} bind def
/execute { % <obj> execute -
.execute pop
} odef
% Define an execute analogue of runlibfile0.
/execute0 { % <obj> execute0 -
.execute { /execute0 cvx 1 .quit } if
} bind def
% Define the procedure that the C code uses for running files
% named on the command line.
/.runfile {
{ runlibfile } execute0
} def
% Define the procedure that the C code uses for running piped input.
% We don't use the obvious { (%stdin) run }, because we want the file to be
% reopened if a startjob does a restore.
/.runstdin {
{ { (%stdin) (r) file cvx } .runexec } execute0
} bind def
% Define the procedure that the C code uses for running commands
% given on the command line with -c. We turn the string into a file so that
% .runexec can do the right thing with a startjob.
/.runstring {
.currentglobal exch true .setglobal
0 () .subfiledecode
exch .setglobal cvx { .runexec } execute0
} bind def
% Define the procedure that the C code uses to set up for executing
% a string that may be received in pieces.
/.runstringbegin {
.currentglobal true .setglobal
{ .needinput } bind 0 () .subfiledecode
exch .setglobal cvx .runexec
} bind def
% Define a special version of runlibfile that aborts on errors.
/runlibfile0
{ cvlit dup /.currentfilename exch def
{ findlibfile not { stop } if }
stopped
{ (Can't find \(or open\) initialization file ) print
.currentfilename == flush /runlibfile0 cvx 1 .quit
} if
exch pop cvx stopped
{ (While reading ) print .currentfilename print (:\n) print flush
/handleerror .systemvar exec /runlibfile0 1 .quit
} if
} bind def
% Temporarily substitute it for the real runlibfile.
/.runlibfile /runlibfile load def
/runlibfile /runlibfile0 load def
% Create the error handling machinery.
% Define the standard error handlers.
% The interpreter has created the ErrorNames array.
/.unstoppederrorhandler % <command> <errorname> .unstoppederrorhandler -
{ % This is the handler that gets used for recursive errors,
% or errors outside the scope of a 'stopped'.
2 copy SHORTERRORS
{ (%%[ Error: ) print =only flush
(; OffendingCommand: ) print =only ( ]%%) =
}
{ (Unrecoverable error: ) print =only flush
( in ) print = flush
count 2 gt
{ (Operand stack:\n ) print
count 1 sub -1 2 { ( ) print index =only flush } for
() = flush
} if
}
ifelse
-1 0 1 //ErrorNames length 1 sub
{ dup //ErrorNames exch get 3 index eq
{ not exch pop exit } { pop } ifelse
}
for exch pop .quit
} bind def
/.errorhandler % <command> <errorname> .errorhandler -
{ % Detect an internal 'stopped'.
1 .instopped { //null eq { pop pop stop } if } if
(I) false .setdebug
$error /.inerror get 1 .instopped { pop } { pop true } ifelse
{ .unstoppederrorhandler
} if % detect error recursion
$error /globalmode .currentglobal false .setglobal put
$error /.inerror true put
$error /newerror true put
$error exch /errorname exch put
$error exch /command exch put
$error /recordstacks get $error /errorname get /VMerror ne and
{ % Attempt to store the stack contents atomically.
count array astore dup $error /ostack 4 -1 roll
% Grab the execstack, then remove to two elements that are from
% this error handler (not interesting).
countexecstack array execstack dup length 2 sub 0 exch getinterval
$error /estack 3 -1 roll
countdictstack array dictstack $error /dstack 3 -1 roll
put put put aload pop
}
{ $error /dstack .undef
$error /estack .undef
$error /ostack .undef
}
ifelse
$error /position currentfile status
{ currentfile { fileposition } .internalstopped { pop //null } if
}
{ % If this was a scanner error, the file is no longer current,
% but the command holds the file, which may still be open.
$error /command get dup type /filetype eq
{ { fileposition } .internalstopped { pop //null } if }
{ pop //null }
ifelse
}
ifelse put
% During initialization, we don't reset the allocation
% mode on errors.
$error /globalmode get $error /.nosetlocal get and .setglobal
$error /.inerror false put
stop
} bind def
% Define the standard handleerror. We break out the printing procedure
% (.printerror) so that it can be extended for binary output
% if the Level 2 facilities are present.
/.printerror
{ $error begin newerror
{
/command load errorname SHORTERRORS
{ (%%[ Error: ) print =only flush
(; OffendingCommand: ) print =only
errorinfo dup //null eq {
pop
} {
(;\nErrorInfo:) print
dup type /arraytype eq
{ { ( ) print =only } forall }
{ ( ) print =only }
ifelse
} ifelse
( ]%%) = flush
}
{ (Error: ) print ==only flush
( in ) print ==only flush
errorinfo dup //null eq {
pop
} {
(\nAdditional information: ) print ==only flush
} ifelse
.printerror_long
}
ifelse
.clearerror flush
}
{ % newerror is false, test to see if user has set handleerror to a different
% routine, if so execute it, otherwise, just return. This code deals with the
% Genoa issue of setting /handleerror, and then calling it, without an error
% being set. We were erroring in this case, due to /command load failing.
/errordict .systemvar dup /handleerror get exch
//JOBSERVER { /.GShandleerror } { /handleerror } ifelse
get ne
{ /errordict .systemvar begin /handleerror load .internalstopped pop end
}
if
}
ifelse % newerror
end
flush
} bind def
/.printerror_long % long error printout,
% $error is on the dict stack
{ % Push the (anonymous) stack printing procedure.
% <heading> <==flag> <override-name> <stackname> proc
{
currentdict exch .knownget % stackname defined in $error?
{
4 1 roll % stack: <stack> <head> <==flag> <over>
/errordict .systemvar exch .knownget % overridename defined?
{
exch pop exch pop exec % call override with <stack>
}
{
exch print exch % print heading. stack <==flag> <stack>
1 index not { () = } if
{ 1 index { (\n ) } { ( ) } ifelse print
dup type /dicttype eq
{
(--dict:) print
dup rcheck {
dup length =only (/) print dup maxlength =only
dup wcheck not { ((ro)) print } if
} if
/gcheck where {
pop gcheck { ((G)) } { ((L)) } ifelse print
} {
pop
} ifelse (--) print
}
{
dup type /stringtype eq 2 index or
{ ==only } { =only } ifelse
} ifelse
} forall
pop
}
ifelse % overridden
}
{ pop pop pop
}
ifelse % stack known
}
(\nOperand stack:) OSTACKPRINT /.printostack /ostack 4 index exec
(\nExecution stack:) ESTACKPRINT /.printestack /estack 4 index exec
(\nBacktrace:) true /.printbacktrace /backtrace 4 index exec
(\nDictionary stack:) false /.printdstack /dstack 4 index exec
() =
pop % printing procedure
errorname /VMerror eq
{ (VM status:) print mark vmstatus
counttomark { ( ) print counttomark -1 roll dup =only } repeat
cleartomark () =
} if
.languagelevel 2 ge
{ (Current allocation mode is ) print
globalmode { (global\n) } { (local\n) } ifelse print
} if
.oserrno dup 0 ne
{ (Last OS error: ) print
errorname /VMerror ne
{ dup .oserrorstring { = pop } { = } ifelse }
{ = }
ifelse
}
{ pop
}
ifelse
position //null ne
{ (Current file position is ) print position = }
if
} bind def
% Define a procedure for clearing the error indication.
/.clearerror
{ $error /newerror false put
$error /errorname //null put
$error /errorinfo //null put
0 .setoserrno
} bind def
% Define $error. This must be in local VM.
.currentglobal false .setglobal
/$error 40 dict .forcedef % $error is local, systemdict is global
% newerror, errorname, command, errorinfo,
% ostack, estack, dstack, recordstacks,
% binary, globalmode,
% .inerror, .nosetlocal, position,
% plus extra space for badly designed error handers.
$error begin
/newerror false def
/recordstacks true def
/binary false def
/globalmode .currentglobal def
/.inerror false def
/.nosetlocal true def
/position //null def
end
% Define errordict similarly. It has one entry per error name,
% plus handleerror. However, some astonishingly badly written PostScript
% files require it to have at least one empty slot.
/errordict ErrorNames length 3 add dict
.forcedef % errordict is local, systemdict is global
.setglobal % contents of errordict are global
errordict begin
ErrorNames
{ mark 1 index systemdict /.errorhandler get /exec load .packtomark cvx def
} forall
% The handlers for interrupt and timeout are special; there is no
% 'current object', so they push their own name.
{ /interrupt /timeout }
{ mark 1 index dup systemdict /.errorhandler get /exec load .packtomark cvx def
} forall
/handleerror % this key is 'well known' and some PS may redefine it
{ /.printerror .systemvar exec
} bind def
% a private entry that we will always use under JOBSERVER mode
/.GShandleerror
{ /.printerror .systemvar exec
} bind def
end
% Define the [write]==[only] procedures.
/.dict 8 dict dup
begin def
/.cvp {1 index exch 1 .writecvp} bind def
/.p {1 index exch writestring} bind def
/.p1 {2 index exch writestring} bind def
/.p2 {3 index exch writestring} bind def
/.print
{ dup type .dict exch .knownget { exec } { .cvp } ifelse
} bind def
/arraytype
{dup rcheck
{() exch dup xcheck
{({) .p2
{exch .p1
1 index exch .print pop ( )} forall
(})}
{([) .p2
{exch .p1
1 index exch .print pop ( )} forall
(])}
ifelse exch pop .p}
{.cvp}
ifelse} bind def
/packedarraytype /arraytype load def
{//.dict begin .print pop end}
bind
end
/write==only exch def
/write== {1 index exch write==only (\n) writestring} bind def
/==only { (%stdout) (w) file exch write==only } bind def
/== {==only (\n) print} bind def
% Define [write]===[only], an extension that prints dictionaries
% in readable form and doesn't truncate strings.
/.dict /write==only load 0 get dup length 2 add dict .copydict dup
begin def
/dicttype
{ dup rcheck
{ (<< ) .p1
{ 2 index 3 -1 roll .print pop ( ) .p1
1 index exch .print pop ( ) .p
}
forall (>>) .p
}
{ .cvp
}
ifelse
} bind def
/stringtype
{ 1 index exch 2 .writecvp
} bind def
{//.dict begin .print pop end}
bind
end
/write===only exch def
/write=== {1 index exch write===only (\n) writestring} bind def
/===only { (%stdout) (w) file exch write===only } bind def
/=== { ===only (\n) print } bind def
% Create the initialization queue.
/.delayed_init_queue 10 dict def
/.schedule_init % <priority> <proc> .schedule_init -
{
//.delayed_init_queue 2 index known {
(.delayed_init_queue priority conflict with ) print 1 index =
/.schedule_init cvx /configurationerror signalerror
} if
//.delayed_init_queue 3 1 roll .growput
} bind def
/.execute_schedulled_inits % - .execute_schedulled_inits -
{
{ 0 //null //.delayed_init_queue { % maxp {} p {}
3 index 2 index lt {
4 2 roll
} if
pop pop
} forall
exch //.delayed_init_queue exch undef
dup //null eq {
pop exit
} if
exec
} loop
} bind def
(END PROCS) VMDEBUG
% Define the font directory.
/FontDirectory false .setglobal 100 dict true .setglobal
.forcedef % FontDirectory is local, systemdict is global
% Define the encoding dictionary.
/EncodingDirectory 16 dict def % enough for Level 2 + PDF standard encodings
% Define .findencoding. (This is redefined in Level 2.)
/.findencoding
{ //EncodingDirectory exch get exec
} bind def
/.defineencoding
{ //EncodingDirectory 3 1 roll put
} bind def
% If we've got the composite font extensions, define findencoding.
% To satisfy the Genoa FTS, findencoding must be a procedure, not an operator.
/rootfont where { pop /findencoding { .findencoding } def } if
% Define .registerencoding.
% NOTE: This procedure no longer does anything, but it must continue to
% exist for the sake of toolbin/encs2c.ps.
/.registerencoding { % <index> <array> .registerencoding -
pop pop
} bind odef
% Load StandardEncoding.
%% Replace 1 (gs_std_e.ps)
(gs_std_e.ps) dup runlibfile VMDEBUG
% Load ISOLatin1Encoding.
%% Replace 1 (gs_il1_e.ps)
(gs_il1_e.ps) dup runlibfile VMDEBUG
% Define stubs for the Symbol and Dingbats encodings.
% Note that the first element of the procedure must be the file name,
% since gs_lev2.ps extracts it to set up the Encoding resource category.
/SymbolEncoding { /SymbolEncoding .findencoding } bind def
%% Replace 3 (gs_sym_e.ps)
EncodingDirectory /SymbolEncoding
{ (gs_sym_e.ps) //systemdict begin runlibfile SymbolEncoding end }
bind put
/DingbatsEncoding { /DingbatsEncoding .findencoding } bind def
%% Replace 3 (gs_dbt_e.ps)
EncodingDirectory /DingbatsEncoding
{ (gs_dbt_e.ps) //systemdict begin runlibfile DingbatsEncoding end }
bind put
(END FONTDIR/ENCS) VMDEBUG
% Construct a dictionary of all available devices.
% These are (read-only) device prototypes that can't be
% installed or have their parameters changed. For this reason,
% the value in the dictionary is actually a 2-element writable array,
% to allow us to create a default instance of the prototype on demand.
% Loop until the .getdevice gets a rangecheck.
errordict /rangecheck 2 copy get
errordict /rangecheck { pop stop } put % pop the command
0 { {dup .getdevice exch 1 add} loop} .internalstopped pop
1 add dict /devicedict 1 index def
begin % 2nd copy of count is on stack
{ dup .devicename exch
dup wcheck { dup } { //null } ifelse 2 array astore def
} repeat
end
put % errordict /rangecheck
.clearerror
/devicenames devicedict { pop } forall devicedict length packedarray def
% Determine the default device.
/defaultdevice DISPLAYING
{ systemdict /DEVICE .knownget
{ devicedict 1 index known not
{ (Unknown device: ) print =
flush /defaultdevice cvx 1 .quit
}
if
}
{ 0 .getdevice .devicename
}
ifelse
}
{ /nullpage
}
ifelse
/.defaultdevicename 1 index def
finddevice % make a copy
def
devicedict /Default devicedict .defaultdevicename get put
(END DEVS) VMDEBUG
% Define statusdict, for the benefit of programs
% that think they are running on a LaserWriter or similar printer.
%% Replace 1 (gs_statd.ps)
(gs_statd.ps) runlibfile
(END STATD) VMDEBUG
% Load the standard font environment.
%% Replace 1 (gs_fonts.ps)
(gs_fonts.ps) runlibfile
(END GS_FONTS) VMDEBUG
% Define the default halftone screen and BG/UCR functions now, so that
% it will bind in the original definitions of set[color]screen.
% We make this a procedure so we can call it again when switching devices.
% Use an ordered dither for low-resolution devices.
/.setloreshalftone { % <dpi> .setloreshalftone -
% The following 'ordered dither' spot function was contributed by
% Gregg Townsend. Thanks, Gregg!
16.001 div 0 % not 16: avoids rounding problems
{ 1 add 7.9999 mul cvi exch 1 add 7.9999 mul cvi 16 mul add <
0E 8E 2E AE 06 86 26 A6 0C 8C 2C AC 04 84 24 A4
CE 4E EE 6E C6 46 E6 66 CC 4C EC 6C C4 44 E4 64
3E BE 1E 9E 36 B6 16 96 3C BC 1C 9C 34 B4 14 94
FE 7E DE 5E F6 76 D6 56 FC 7C DC 5C F4 74 D4 54
01 81 21 A1 09 89 29 A9 03 83 23 A3 0B 8B 2B AB
C1 41 E1 61 C9 49 E9 69 C3 43 E3 63 CB 4B EB 6B
31 B1 11 91 39 B9 19 99 33 B3 13 93 3B BB 1B 9B
F1 71 D1 51 F9 79 D9 59 F3 73 D3 53 FB 7B DB 5B
0D 8D 2D AD 05 85 25 A5 0F 8F 2F AF 07 87 27 A7
CD 4D ED 6D C5 45 E5 65 CF 4F EF 6F C7 47 E7 67
3D BD 1D 9D 35 B5 15 95 3F BF 1F 9F 37 B7 17 97
FD 7D DD 5D F5 75 D5 55 FF 7F DF 5F F7 77 D7 57
02 82 22 A2 0A 8A 2A AA 00 80 20 A0 08 88 28 A8
C2 42 E2 62 CA 4A EA 6A C0 40 E0 60 C8 48 E8 68
32 B2 12 92 3A BA 1A 9A 30 B0 10 90 38 B8 18 98
F2 72 D2 52 FA 7A DA 5A F0 70 D0 50 F8 78 D8 58
> exch get 256 div
}
bind
% Use correct, per-plane screens for CMYK devices only.
//systemdict /setcolorscreen known processcolors 4 eq and
{ 3 copy 6 copy //setcolorscreen }
{ //setscreen }
ifelse
} bind def
/.setloresscreen { % <dpi> .setloresscreen -
.setloreshalftone
0 array cvx settransfer % Genoa CET won't accept a packed array!
/setstrokeadjust where { pop true setstrokeadjust } if
} bind def
% Use a 45-degree spot screen for high-resolution devices.
/.sethireshalftone { % <dpi> .sethireshalftone <doscreen>
% According to information published by Hewlett-Packard,
% they use a 60 line screen on 300 DPI printers and
% an 85 line screen on 600 DPI printers.
% However, we use a 106 line screen, which produces smoother-
% looking shades but fewer of them (32 vs. 50).
% 46 was suggested as a good frequency value for printers
% between 200 and 400 DPI, so we use it for lower resolutions.
% Imagesetters need even higher frequency screens.
//systemdict /DITHERPPI known
{ DITHERPPI
}
{ dup cvi 100 idiv 15 .min
{//null 46 46 60 60 60 106 106 106 106 133 133 133 133 133 150}
exch get
}
ifelse
1 index 4.01 div .min % at least a 4x4 cell
45
% The following screen algorithm is used by permission of the author.
{ 1 add 180 mul cos 1 0.08 add mul exch 2 add 180 mul cos
1 0.08 sub mul add 2 div % (C) 1989 Berthold K.P. Horn
}
bind
% Determine whether we have lots of process colors.
% If so, don't bother with color screening or gamma correction.
% Also don't do gamma correction on very high-resolution devices.
% (This should depend on dot gain, not resolution, but we don't
% currently have a way to determine this.) Ignore missing components
% (*Values = 1).
currentdevice mark
/RedValues 0 /GreenValues 0 /BlueValues 0 /GrayValues 0
.dicttomark .getdeviceparams
counttomark 2 idiv 1 sub
{ exch pop dup 1 le
{ pop }
{ exch dup 1 le
{ pop }
{ .min }
ifelse
}
ifelse
}
repeat
exch pop exch pop 32 lt 4 index 800 lt and 5 1 roll
% Stack: doscreen dpi freq angle proc
% Ghostscript currently doesn't use correct, per-plane halftones
% unless setcolorscreen has been executed. Since these are
% computationally much more expensive than binary halftones,
% we check to make sure they are really warranted, i.e., we have
% a high-resolution CMYK device (i.e., not a display) with
% fewer than 5 bits per plane (i.e., not a true-color device).
4 -1 roll 150 ge
{ /setcolorscreen where
{ pop //systemdict /COLORSCREEN known
{ COLORSCREEN }
{ 3 index }
ifelse
dup false ne
{ 4 1 roll 3 copy 6 copy 13 -1 roll
% For really high-quality screening on printers, we need to
% give each plane its own screen angle. Unfortunately,
% this currently has very large space and time costs.
true eq % true => different angles,
% 0 => same angles
{ { 45 90 15 75 } { 3 1 roll exch pop 12 3 roll } forall
}
if //setcolorscreen
}
{ pop //setscreen % false => single binary screen
}
ifelse
}
{ //setscreen % setcolorscreen not known
}
ifelse
}
{ //setscreen % not high resolution
}
ifelse
} bind def
/.sethiresscreen { % <dpi> .sethiresscreen
.sethireshalftone % pushes true if a screen halftone used
% Stack: doscree
{
% Set the transfer function to lighten up the grays.
% Parameter values closer to 1 are better for devices with
% less dot spreading; lower values are better with more spreading.
% The value 0.8 is a compromise that will probably please no one!
%
% Because of a bug in FrameMaker, we have to accept operands
% outside the valid range of [0..1].
{
dup dup 0.0 gt exch 1.0 lt and
{
0.8 exp
}
if
}
}
{
% Set the transfer function to the identity.
0 array cvx % Genoa CET won't accept a packed array!
}
ifelse
settransfer
/setstrokeadjust where
{ pop false setstrokeadjust }
if
% Increase fill adjustment so that we effectively use Adobe's
% any-part-of-pixel rule.
0.5 .setfilladjust
} bind def
% Set the default screen and BG/UCR.
/.setdefaultbgucr {
systemdict /setblackgeneration known {
{ pop 0 } dup setblackgeneration setundercolorremoval
} if
} bind def
/.useloresscreen { % - .useloresscreen <bool>
% Compute min(|dpi x|,|dpi y|) as the definition of the resolution.
72 72 matrix defaultmatrix dtransform abs exch abs .min
dup 150 lt //systemdict /DITHERPPI known not and
} bind def
% The following implementation uses LL2 extensions, but only in stopped
% contexts so that with LL1, the .set??reshalftone will be used.
%
% - .getdefaulthalftone <halftonedict> true if default found
% false
/.getdefaulthalftone {
% try the device to see if it has a default halftone
{ currentdevice /HalftoneDefault gsgetdeviceprop } .internalstopped
{ pop pop false } % no device property
{ dup type /dicttype eq { true } { pop false } ifelse }
ifelse
% stack: <halftonedict> true if default found
% false not found
dup not
{ % device did not provide a default, try Resource
pop { /Default /Halftone /findresource .systemvar exec } .internalstopped
{ pop pop false } { true } ifelse
}
if
} bind def
/.setdefaulthalftone {
.getdefaulthalftone
{ sethalftone }
{ % default not found
.useloresscreen { .setloreshalftone } { .sethireshalftone pop } ifelse
}
ifelse
} bind def
/.setdefaultscreen {
.useloresscreen { .setloresscreen } { .sethiresscreen } ifelse
.setdefaultbgucr
} bind def
% Load basic color support
%% Replace 1 (gs_cspace.ps)
(gs_cspace.ps) runlibfile
(END BASIC COLOR) VMDEBUG
%% Replace 1 (gs_devcs.ps)
(gs_devcs.ps) runlibfile
(END LEVEL 1 COLOR) VMDEBUG
% Load image support
%% Replace 1 (gs_img.ps)
(gs_img.ps) runlibfile
(END IMAGE) VMDEBUG
% Auxiliary procedures for generating file name templates.
% Convert a path name into a string suitable for filenameforall
% For example: (a\\b*?c) to (a\\\\b\\*\\?c)
/.makepathtemplate { % str1 -- str2
dup length dup add string 0 % result string up to twice the size
0 1 4 index length 1 sub {
3 index exch get
dup 92 eq { % \ -> \\
2 index 2 index 92
put
exch 1 add exch
}
if
dup 42 eq { % * -> \*
2 index 2 index 92
put
exch 1 add exch
}
if
dup 63 eq { % ? -> \?
2 index 2 index 92
put
exch 1 add exch
}
if
2 index 2 index 3 -1 roll put 1 add
} for
0 exch getinterval exch pop
} bind def
% <dir_list> <template> .generate_dir_list_templates <t1> ... <tN>
%
% Generates various valid templates combining a directory list with a given template.
%
% Example1 (DOS, Windows) :
% [(/gs/lib) (/gs/Resource/) (\gs8.00\Resource)] (*/*) -->
% (/gs/lib/*/*) (/gs/Resource/*/*) (\\gs8.00\\Resource/*/*)
%
% Example2 (OpenVMS) :
% [(gs:[lib]) (gs:[Resource]) (gs800:[Resource)] (*]*) -->
% ((gs:[lib.*]*) [gs:[Resource.*]*) ([gs800:[Resource.*]*)
%
/.generate_dir_list_templates
{ % [dl] (templ)
% We need to convert paths into templates,
% because it can include '\' on DOS.
% In same time, the <template> must not convert,
% because it is already a template.
% Besides that, we cannot combine template using .file_name_combine,
% because template syntax breaks the platform path syntax.
% To resolve this, we first convert the <template> into
% a fake filename, and combine it with path,
% obtaining a correct separator. Then we replace
% the fake file name with the given template.
%
% Create the fake file name :
dup dup length string copy % [dl] (templ) (ffn)
(*) 0 get (?) 0 get (\\) 0 get (x) 0 get 0 0 % [dl] (templ) (ffn) * ? \ x i j
{ 1 index 7 index length ge { exit } if
6 index 2 index get % [dl] (templ) (ffn) * ? \ x i j c
dup 7 index eq % [dl] (templ) (ffn) * ? \ x i j c bool
1 index 7 index eq or { % *?
pop 2 index
} if % [dl] (templ) (ffn) * ? \ x i j C
dup 5 index eq { % \
3 2 roll 1 add 3 1 roll % [dl] (templ) (ffn) * ? \ x i' j C
2 index 8 index length ge { pop exit } if
pop 6 index 2 index get % [dl] (templ) (ffn) * ? \ x i' j C'
} if
7 index 2 index 3 2 roll put % [dl] (templ) (ffn) * ? \ x i' j
1 add exch 1 add exch % [dl] (templ) (ffn) * ? \ x i'' j'
} loop % [dl] (templ) (ffn) * ? \ x i j
6 1 roll pop % [dl] (templ) (ffn) j * ? \ x
exch pop exch pop exch pop exch % [dl] (templ) (ffn) x j
{ dup 3 index length ge { exit } if
3 copy exch put
1 add
} loop
pop pop % [dl] (templ) (ffn)
% An internal procedure :
{ % {} [dl] (templ) (ffn) (dffn)
.makepathtemplate % {} [dl] (templ) (ffn) (Dffn)
dup % {} [dl] (templ) (ffn) (Dffn) (Dffn)
3 index length dup % {} [dl] (templ) (ffn) (Dffn) (Dffn) templL templL
2 index length % {} [dl] (templ) (ffn) (Dffn) (Dffn) templL templL DffnL
exch sub % {} [dl] (templ) (ffn) (Dffn) (Dffn) templL i
exch getinterval % {} [dl] (templ) (ffn) (Dffn) (suffix)
3 index exch copy pop % {} [dl] (templ) (ffn) (dt)
5 1 roll % (dt) {} [dl] (templ) (ffn)
}
4 1 roll % {} [dl] (templ) (ffn)
% Generate templates :
dup .file_name_is_absolute {
dup % {} [dl] (templ) (ffn) (ffn)
4 index exec % (t1) {} [dl] (templ) (ffn)
} {
2 index { % {} [dl] (templ) (ffn) (d)
1 index % {} [dl] (templ) (ffn) (d) (ffn)
false .file_name_combine { % {} [dl] (templ) (ffn) (dffn)
4 index exec % (t1) {} [dl] (templ) (ffn)
} { % {} [dl] (templ) (ffn) (d) (ffn)
pop pop % {} [dl] (templ) (ffn)
} ifelse
} forall
} ifelse % (t1) (t2) ... (tN) {} [dl] (templ) (ffn)
pop pop pop pop % (t1) (t2) ... (tN)
} bind def
% Load the initialization files for optional features.
%% Replace 4 INITFILES
systemdict /INITFILES known
{ INITFILES { dup runlibfile VMDEBUG } forall
}
if
% If Level 2 (or higher) functionality is implemented, enable it now.
/.setlanguagelevel where {
pop 2 .setlanguagelevel
% If the resource machinery is loaded, fix up some things now.
/.fixresources where { pop .fixresources } if
} if
/ll3dict where {
pop 3 .setlanguagelevel
} if
(END INITFILES) VMDEBUG
%% Replace 1 (gs_stres.ps)
(gs_stres.ps) dup runlibfile VMDEBUG
(END STATIC RESOURCES) VMDEBUG
% Create a null font. This is the initial font.
8 dict dup begin
/FontMatrix [ 1 0 0 1 0 0 ] readonly def
/FontType 3 def
/FontName () def
/Encoding StandardEncoding def
/FontBBox { 0 0 0 0 } readonly def % executable is bogus, but customary ...
/BuildChar { pop pop 0 0 setcharwidth } bind def
/PaintType 0 def % shouldn't be needed!
end
/NullFont exch definefont setfont
% Define NullFont as the font.
/NullFont currentfont def
% Load initial fonts from FONTPATH directories, Fontmap file,
% and/or .getccfont as appropriate.
.loadinitialfonts
% Remove NullFont from FontDirectory, so it can't be accessed by mistake.
/undefinefont where {
pop /NullFont undefinefont
} {
FontDirectory /NullFont .undef
} ifelse
(END FONTS) VMDEBUG
% Restore the real definition of runlibfile.
/runlibfile /.runlibfile load def
currentdict /.runlibfile .undef
% Bind all the operators defined as procedures.
/.bindoperators % binds operators in currentdict
{ % Temporarily disable the typecheck error.
errordict /typecheck 2 copy get
errordict /typecheck { pop } put % pop the command
currentdict
{ dup type /operatortype eq
{ % This might be a real operator, so bind might cause a typecheck,
% but we've made the error a no-op temporarily.
.bind % do a real bind even if NOBIND is set
}
if pop pop
} forall
put
} def
NOBIND DELAYBIND or not { .bindoperators } if
% Establish a default environment.
defaultdevice
% The following line used to skip setting of page size and resolution if
% NODISPLAY was selected. We think this was only to save time and memory,
% and it is a bad idea because it prevents setting the resolution in this
% situation, which pstoedit (among other programs) relies on.
%DISPLAYING not { setdevice (%END DISPLAYING) .skipeof } if
% If the paper size is not specifed and the device defaults to
% letter or A4 paper, select the DEFAULTPAPERSIZE.
systemdict /DEFAULTPAPERSIZE known
systemdict /PAPERSIZE known not and
systemdict /DEVICEWIDTH known not and
systemdict /DEVICEHEIGHT known not and
systemdict /DEVICEWIDTHPOINTS known not and
systemdict /DEVICEHEIGHTPOINTS known not and
{
defaultdevice mark /PageSize //null .dicttomark .getdeviceparams
.dicttomark /PageSize get
dup 0 get 0.5 add cvi 612 eq 1 index 1 get 0.5 add cvi 792 eq and
1 index 0 get 0.5 add cvi 595 eq 2 index 1 get 0.5 add cvi 842 eq and
or exch pop
{
% the default paper size was letter, so replace it with DEFAULTPAPERSIZE
/PAPERSIZE DEFAULTPAPERSIZE def
} if
}
if
systemdict /DEVICEWIDTH known
systemdict /DEVICEHEIGHT known or
systemdict /DEVICEWIDTHPOINTS known or
systemdict /DEVICEHEIGHTPOINTS known or
systemdict /DEVICEXRESOLUTION known or
systemdict /DEVICEYRESOLUTION known or
systemdict /PAPERSIZE known or
not { (%END DEVICE) .skipeof } if
% Let DEVICE{WIDTH,HEIGHT}[POINTS] override PAPERSIZE.
systemdict /PAPERSIZE known
systemdict /DEVICEWIDTH known not and
systemdict /DEVICEHEIGHT known not and
systemdict /DEVICEWIDTHPOINTS known not and
systemdict /DEVICEHEIGHTPOINTS known not and
{ % Convert the paper size to device dimensions.
true statusdict /.pagetypenames get
{ PAPERSIZE eq
{ PAPERSIZE load
dup 0 get /DEVICEWIDTHPOINTS exch def
1 get /DEVICEHEIGHTPOINTS exch def
pop false exit
}
if
}
forall
{ (Unknown paper size: ) print PAPERSIZE ==only (.) =
}
if
}
if
% Adjust the device parameters per the command line.
% It is possible to specify resolution, pixel size, and page size;
% since any two of these determine the third, conflicts are possible.
% We simply pass them to .setdeviceparams and let it sort things out.
mark /HWResolution //null /HWSize //null /PageSize //null .dicttomark
.getdeviceparams .dicttomark begin
mark
% Check for resolution.
/DEVICEXRESOLUTION where dup
{ exch pop HWResolution 0 DEVICEXRESOLUTION put }
if
/DEVICEYRESOLUTION where dup
{ exch pop HWResolution 1 DEVICEYRESOLUTION put }
if
or { /HWResolution HWResolution } if
% Check for device sizes specified in pixels.
/DEVICEWIDTH where dup
{ exch pop HWSize 0 DEVICEWIDTH put }
if
/DEVICEHEIGHT where dup
{ exch pop HWSize 1 DEVICEHEIGHT put }
if
or { /HWSize HWSize } if
% Check for device sizes specified in points.
/DEVICEWIDTHPOINTS where dup
{ exch pop PageSize 0 DEVICEWIDTHPOINTS put }
if
/DEVICEHEIGHTPOINTS where dup
{ exch pop PageSize 1 DEVICEHEIGHTPOINTS put }
if
or { /PageSize PageSize } if
% Check whether any parameters were set.
dup mark eq { pop } { defaultdevice putdeviceprops } ifelse
end
%END DEVICE
% Set any device properties defined on the command line.
% If BufferSpace is defined but not MaxBitmap, set MaxBitmap to BufferSpace.
systemdict /BufferSpace known
systemdict /MaxBitmap known not and
{ systemdict /MaxBitmap BufferSpace put
} if
dup getdeviceprops
counttomark 2 idiv
{ systemdict 2 index known
{ pop dup load counttomark 2 roll }
{ pop pop }
ifelse
} repeat
counttomark dup 0 ne
{ 2 add -1 roll putdeviceprops }
{ pop pop }
ifelse
% If the initial device parameters are invalid, the setdevice may fail.
% Trap this and produce a reasonable error message.
{ setdevice } % does an erasepage
INITDEBUG { exec false } { .internalstopped } ifelse {
(**** Unable to open the initial device, quitting.) = flush 1 .quit
} if
% If the media size is fixed, update the current page device dictionary.
FIXEDMEDIA
dup { pop systemdict /.currentpagedevice known } if
dup { pop .currentpagedevice exch pop } if
not { (%END MEDIA) .skipeof } if
currentpagedevice dup length dict .copydict
dup /Policies
% Stack: <pagedevice> <pagedevice> /Policies
1 index /InputAttributes
2 copy get dup length dict .copydict
% Stack: <pagedevice> <pagedevice> /Policies <pagedevice>
% /InputAttributes <inputattrs'>
dup 0 2 copy get dup length dict .copydict
% Stack: <pagedevice> <pagedevice> /Policies <pagedevice>
% /InputAttributes <inputattrs'> <inputattrs'> 0 <attrs0'>
dup /PageSize 7 index /PageSize get
put % PageSize in 0
put % 0 in InputAttributes
put % InputAttributes in pagedevice
% Also change the page size policy so we don't get an error.
% Stack: <pagedevice> <pagedevice> /Policies
2 copy get dup length dict .copydict
% Stack: <pagedevice> <pagedevice> /Policies <policies'>
dup /PageSize 7 put % PageSize in Policies
put % Policies in pagedevice
.setpagedevice
%END MEDIA
% Set up the interpreter context version of -dUSeCIEColor option
% so that .getuseciecolor has the correct value (see gs_setpd.ps)
/setpagedevice where {
pop systemdict /UseCIEColor known {
mark /UseCIEColor UseCIEColor .dicttomark setpagedevice
} if
} if
%END DISPLAYING
(END DEVICE) VMDEBUG
% Establish a default upper limit in the character cache,
% namely, enough room for a 18-point character at the resolution
% of the default device, or for a character consuming 1% of the
% maximum cache size, whichever is larger.
mark
% Compute limit based on character size.
18 dup dtransform
exch abs cvi 31 add 32 idiv 4 mul % X raster
exch abs cvi mul % Y
% Compute limit based on allocated space.
cachestatus pop pop pop pop pop exch pop 0.01 mul cvi
.max dup 10 idiv exch
setcacheparams
% Conditionally disable the character cache.
NOCACHE { 0 setcachelimit } if
(END CONFIG) VMDEBUG
% Initialize graphics.
.setdefaultscreen
initgraphics
% The interpreter relies on there being at least 2 entries
% on the graphics stack. Establish the second one now.
gsave
% Define some control sequences as no-ops.
% This is a hack to get around problems
% in some common PostScript-generating applications.
<04> cvn JOBSERVER {
{ { clear cleardictstack //false 0 .startnewjob } 2 .stop } bind
} {
{ }
} ifelse def
<1b> cvn { % UEL is <esc>%-12345X and acts the same as ^D
currentfile (%-12345X) .peekstring pop (%-12345X) eq <04> cvn load if
} bind def
<1b45> cvn { } def % PJL reset prologue (ESC E)
<1b451b> cvn <1b> cvn load def % PJL reset epilogue (ESC E + UEL)
(\001M) cvn % TBCP initiator
{ currentfile /TBCPDecode filter cvx exec
} bind def
/@PJL % H-P job control
{
% Windows 2000 driver includes PJL into %%BeginFeature block.
% Identify this from the pattern on the stack: countdictstack lucas mark
% and fail the feature request.
count 3 ge {
dup mark eq {
2 index countdictstack eq {
1 index /lucas where { /lucas get eq } { pop false } ifelse {
stop
} if
} if
} if
} if
currentfile //=string readline pop pop
} bind def
% Install the EPS handler if needed
systemdict /EPSBoundingBoxInit known { EPSBoundingBoxInit } if
% If we want a "safer" system, disable some obvious ways to cause havoc.
.currentglobal true .setglobal
/SAFETY 2 dict
dup /safe false put
dup /tempfiles 10 dict readonly put
readonly def
.setglobal
/.locksafe {
SAFETY /safe get not {
<<
/PermitFileReading [
currentuserparams /PermitFileReading get aload pop
/FONTPATH .systemvar (*) .generate_dir_list_templates
% Library files :
/LIBPATH .systemvar (*) .generate_dir_list_templates
% Resource files on OpenVMS requires a separate template (gs:[dir.*]*)
% because the (gs:[dir]*) doesn't cover them.
/LIBPATH .systemvar (*) .file_name_separator (*)
concatstrings concatstrings .generate_dir_list_templates
.languagelevel 2 ge {
% Default resources :
[ currentsystemparams /GenericResourceDir get] (*) .generate_dir_list_templates
% Default resources (OpenVMS, see comment above.) :
[ currentsystemparams /GenericResourceDir get] (*) .file_name_separator (*)
concatstrings concatstrings .generate_dir_list_templates
} if
]
/LockFilePermissions true
>> setuserparams
}
if
% setpagedevice has the side effect of clearing the page, but
% we will just document that. Using setpagedevice keeps the device
% properties and pagedevice .LockSafetyParams in agreement even
% after a restore that changes the value to false.
currentglobal currentpagedevice gcheck setglobal % use correct VM space
<< /.LockSafetyParams true >> setpagedevice
setglobal
//SAFETY /safe //true .forceput % overrides readonly
} .bind executeonly odef
/.setsafe
{
SAFETY /safe get not {
<<
/PermitFileReading [ ]
/PermitFileWriting [ (/fd/*) ]
/PermitFileControl [ ]
>> setuserparams
}
if
.locksafe
} .bind executeonly odef
/deletefile {
count 1 lt {
//deletefile /stackunderflow signalerror
}
if
dup { deletefile } stopped {
pop //deletefile $error /errorname get signalerror
} {
% deletefile succeeded. Remove from tempfile list if present
//SAFETY /tempfiles get exch cvn 2 copy known {
.forceundef
} {
pop pop
}
ifelse
}
ifelse
} .bind executeonly odef
% If a file is opened with .tempfile with SAFER not (yet) set,
% the file can be deleted later, even if SAFER is set.
/.tempfile {
.tempfile % filename file
//SAFETY /tempfiles get 2 index true .forceput
} .bind executeonly odef
% If we are running in SAFER mode, lock things down
SAFER { .setsafe } if
% If we delayed binding, make it possible to do it later.
/.bindnow {
currentuserparams /IdiomRecognition .knownget {
1 dict dup /IdiomRecognition //false put setuserparams
} if
//systemdict begin .bindoperators end
% Temporarily disable the typecheck error.
errordict /typecheck 2 copy get
errordict /typecheck { pop } put % pop the command
0 1 .delaycount 1 sub { .delaybind exch get .bind pop } for
//systemdict /.delaybind {} .forceput % reclaim the space
//systemdict /.bindnow .forceundef % ditto
put
//systemdict /.forcedef .forceundef % remove temptation
//systemdict /.forceput .forceundef % ditto
//systemdict /.forceundef .forceundef % ditto
currentuserparams /IdiomRecognition known {
1 dict dup /IdiomRecognition 4 -1 roll put setuserparams
} if
} .bind odef
% Turn off array packing, since some PostScript code assumes that
% procedures are writable.
false setpacking
(END INIT) VMDEBUG
/.currentuserparams where {
pop
% Remove real user params from psuserparams.
mark .currentuserparams counttomark 2 idiv {
pop psuserparams exch undef
} repeat pop
% Update the copy of the user parameters.
mark .currentuserparams counttomark 2 idiv {
userparams 3 1 roll .forceput % userparams is read-only
} repeat pop
% Turn on idiom recognition, if available.
currentuserparams /IdiomRecognition known {
/IdiomRecognition true .definepsuserparam
} if
psuserparams readonly pop
systemdict /.definepsuserparam undef
% Save a copy of userparams for use with save/restore
% (and, if implemented, context switching).
.currentglobal false .setglobal
mark userparams { } forall .dicttomark readonly
/userparams exch .forcedef % systemdict is read-only
.setglobal
} if
/.currentsystemparams where {
pop
% Remove real system params from pssystemparams.
mark .currentsystemparams counttomark 2 idiv {
pop pssystemparams exch .forceundef
} repeat pop
} if
% Set up AlignToPixels :
/AlignToPixels where {
mark /AlignToPixels 2 index /AlignToPixels get .dicttomark setuserparams
/AlignToPixels undef
} if
% Set up GridFitTT :
/GridFitTT where {
mark /GridFitTT 2 index /GridFitTT get .dicttomark setuserparams
/GridFitTT undef
} if
% Conditionally turn image interpolation on or off.
currentdict /INTERPOLATE known not { (%END INTERPOLATE) .skipeof } if
/.interpolate {
dup /Interpolate .knownget not { //false } if
/INTERPOLATE .systemvar ne {
dup gcheck .currentglobal exch .setglobal
exch dup length dict copy
dup /Interpolate /INTERPOLATE .systemvar put
exch .setglobal
} if
} bind odef
/colorimage
{ /INTERPOLATE .systemvar
{ .currentglobal % w h bit [] {}...{} multi ncomp glob
//false .setglobal
9 dict begin % w h bit [] {}...{} multi ncomp glob
2 index { 1 index 7 add } { 8 } ifelse
copy gsave pop % preserve the arguments
{ 0 /DeviceGray 0 /DeviceRGB /DeviceCMYK }
1 index get setcolorspace % ... glob w h bit [] {}...{} multi ncomp
{0 1 0 1 0 1 0 1}
1 index 2 mul 0 exch % ... glob w h bit [] {}...{} multi ncomp {0 1 ...} 0 2*ncomp
getinterval /Decode exch def % ... glob w h bit [] {}...{} multi ncomp
exch dup % ... glob w h bit [] {}...{} ncomp multi multi
/MultipleDataSources exch def % ... glob w h bit [] {}...{} ncomp multi
{ array astore} { pop } ifelse % ... glob w h bit [] [{}...{}]
/DataSource exch def % ... glob w h bit []
/ImageMatrix exch def % ... glob w h bit
/BitsPerComponent exch def % ... glob w h
/Height exch def % ... glob w
/Width exch def % ... glob
/ImageType 1 def
/Interpolate //true def
.setglobal currentdict end % ... <<>>
image grestore
exch { 4 add } { 6 } ifelse
{ pop } repeat % -
}
{ colorimage
}
ifelse
} bind odef
/image
{ dup type /dicttype eq
{ dup /ImageType get 3 eq
{ .currentglobal //false .setglobal exch
dup length dict copy begin .setglobal
/DataDict DataDict .interpolate def
/MaskDict MaskDict .interpolate def
currentdict end
}
{ .interpolate
}
ifelse
image
}
{ /INTERPOLATE .systemvar
{ .currentglobal //false .setglobal
8 dict begin .setglobal
/ImageType 1 def
/DataSource 1 index def
/ImageMatrix 2 index def
/BitsPerComponent 3 index def
/Decode {0 1} def
/Height 4 index def
/Width 5 index def
/Interpolate //true def
currentdict end
gsave /DeviceGray setcolorspace image grestore
5 { pop } repeat
}
{ image
}
ifelse
}
ifelse
} bind odef
/imagemask {
dup type /dicttype eq {
.interpolate imagemask
} {
/INTERPOLATE .systemvar {
.currentglobal //false .setglobal
8 dict begin .setglobal
/ImageType 1 def
/DataSource 1 index def
/ImageMatrix 2 index def
/BitsPerComponent 1 def
2 index { {1 0} } { {0 1} } ifelse /Decode exch def
/Height 4 index def
/Width 5 index def
/Interpolate //true def
currentdict end imagemask 5 { pop } repeat
} {
imagemask
} ifelse
} ifelse
} bind odef
currentdict /.interpolate undef
%END INTERPOLATE
% Establish local VM as the default.
false /setglobal where { pop setglobal } { .setglobal } ifelse
$error /.nosetlocal false put
(END GLOBAL) VMDEBUG
/.savelocalstate where {
% If we might create new contexts, save away copies of all dictionaries
% referenced from systemdict that are stored in local VM,
% and also save a copy of the initial gstate.
pop .savelocalstate
} {
% If we're *not* running in a multi-context system and FAKEFONTS is
% defined, add the fake fonts to LocalFontDirectory.
.definefakefonts % current VM is local
} ifelse
% Execude schedilled inits :
//.execute_schedulled_inits exec
currentdict /.execute_schedulled_inits undef
currentdict /.delayed_init_queue undef
currentdict /.delayed_init_queue undef
% Remove systemdict entries for things that have been bound in where used
% and that shouldn't be accessible by name, and close up systemdict.
currentdict /filterdict .undef
currentdict /.cidfonttypes .undef
currentdict /.colorrenderingtypes .undef
currentdict /.formtypes .undef
currentdict /.halftonetypes .undef
currentdict /.imagetypes .undef
currentdict /.imagemasktypes .undef
currentdict /.patterntypes .undef
currentdict /.shadingtypes .undef
currentdict /.wheredict .undef
end
% Clean up VM, and enable GC.
/vmreclaim where
{ pop NOGC not { 2 vmreclaim 0 vmreclaim } if
} if
DELAYBIND not {
systemdict /.forcedef .undef % remove temptation
systemdict /.forceput .undef % ditto
systemdict /.forceundef .undef % ditto
} if
WRITESYSTEMDICT not { systemdict readonly pop } if
(END GC) VMDEBUG
% The Adobe AGM_Core used by Illustrator 9 has some code that breaks
% if the 'product' is not (Adobe PostScript Parser). A bug has been
% submitted to Adobe since this also fails with Acrobat Distiller.
% As a temporary work around, the following HACK will work for
% devices without spot color support. Once Ghostscript can
% support DeviceN and spot color separations this will need to
% be 'true' in some cases.
userdict /AGM_preserve_spots false put
% Start the job as encapsulated if requested, if not, perform an
% outer save so that jobs which depend on global VM not being
% restored will operate correctly.
%
% Note that .setsafe is already in effect if in SAFER mode.
% so an exitserver will restore with SAFER mode still in effect.
JOBSERVER
{ false 0 .startnewjob }
{ NOOUTERSAVE not { save pop } if } % do the outermost save unless disabled
ifelse
% The interpreter will run the initial procedure (start).