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Aminet 21
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Aminet 21 (1997)(GTI - Schatztruhe)[!][Oct 1997].iso
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gs503_data.lha
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gs_pdf.ps
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1997-08-14
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% Copyright (C) 1994, 1996, 1997 Aladdin Enterprises. All rights reserved.
%
% This file is part of Aladdin Ghostscript.
%
% Aladdin Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author
% or distributor accepts any responsibility for the consequences of using it,
% or for whether it serves any particular purpose or works at all, unless he
% or she says so in writing. Refer to the Aladdin Ghostscript Free Public
% License (the "License") for full details.
%
% Every copy of Aladdin Ghostscript must include a copy of the License,
% normally in a plain ASCII text file named PUBLIC. The License grants you
% the right to copy, modify and redistribute Aladdin Ghostscript, but only
% under certain conditions described in the License. Among other things, the
% License requires that the copyright notice and this notice be preserved on
% all copies.
% gs_pdf.ps
% ProcSet for PostScript files created by the PDF to PostScript converter.
% This ProcSet requires only a Level 1 interpreter, unless fonts other
% than ordinary Type 1 or Type 3 fonts are involved.
% pdf2ps copies this file from %BEGIN to the end.
%BEGIN
mark % patches
/currentglobal { false }
/setglobal { pop }
/packedarray { array astore readonly }
/setcmykcolor {
1 exch sub
4 -1 roll 1 exch sub 1 index mul
4 -1 roll 1 exch sub 2 index mul
4 -2 roll exch 1 exch sub mul
setrgbcolor
}
/setpagedevice {
statusdict /pageparams get exec
4 index /PageSize .knownget { aload pop 6 -2 roll pop pop 4 2 roll } if
4 index /Orientation .knownget { 3 -1 roll pop exch } if
statusdict /setpageparams get exec
/PageOffset .knownget { aload pop translate } if
}
/setoverprint { pop }
/setstrokeadjust { pop }
/.copydict { dup 3 -1 roll { put dup } forall pop }
/.dicttomark {
counttomark 2 idiv dup dict begin { def } repeat pop currentdict end
}
/.knownget { 2 copy known { get true } { pop pop false } ifelse }
/.setdefaultscreen { }
counttomark 2 idiv {
1 index where { pop pop pop } { bind executeonly def } ifelse
} repeat pop
currentglobal true setglobal
% Define pdfmark. Don't allow it to be bound in.
% Also don't define it in systemdict, because this leads some Adobe code
% to think this interpreter is a distiller.
% (If this interpreter really is a distiller, don't do this.)
systemdict /pdfmark known not
{ userdict /pdfmark { cleartomark } bind put } if
% This ProcSet is designed so that it can be used either to execute PDF
% (the default) or to convert PDF to PostScript. See ! and ~ below.
userdict /GS_PDF_ProcSet 119 dict dup begin
% ---------------- Abbreviations ---------------- %
/bdef { bind def } bind def
% ---------------- Operator execution ---------------- %
% We record "operator" names in a dictionary with their argument counts,
% so that they can easily be redefined later to write PostScript in
% addition to (or instead of) being executed.
/numargsdict 100 dict def
/! % <procname> <proc> <numargs> ! -
{ //numargsdict 3 index 3 -1 roll put def
} bdef
/~ % <procname> <opname> <numargs> ~ -
{ exch cvx 1 packedarray cvx exch !
} bdef
% ---------------- Graphics state stack ---------------- %
% PDF adds a number of parameters to the graphics state.
% We implement this by pushing and popping a dictionary
% each time we do a PDF gsave or grestore.
% The keys in this dictionary are as follows:
% self % identifies the dictionary as one of ours
% Show
% TextOrigin % origin of current line, in text space
% TextSaveMatrix % matrix at time of BT
% (The following correspond directly to PDF state parameters.)
% FillColor
% FillColorSpace
% StrokeColor
% StrokeColorSpace
% TextSpacing
% TextHScaling
% Leading
% TextFont
% TextMatrix
% TextRise
% TextRenderingMode
% WordSpacing
/nodict 1 dict def
nodict /self { //nodict } executeonly put
nodict readonly pop
/beginpage
{ //nodict 20 dict .copydict begin graphicsbeginpage textbeginpage
} bdef
/endpage
{ showpage end
} bdef
/graphicsbeginpage { initgraphics 0 g 0 G } bdef
/gput % <value> <key> gput -
{ exch currentdict //nodict eq { /self dup load end 5 dict begin def } if
% If we're in a Level 1 system, we need to grow the
% dictionary explicitly.
currentdict length currentdict maxlength ge %eq
{ currentdict dup length 3 mul 2 idiv 1 add dict .copydict end begin
}
if def
} bdef
/q_
{ gsave //nodict begin
} bdef
/q /q_ load 0 !
% Some PDF files have excess Q operators!
/Q_
{ currentdict /self .knownget { exec //nodict eq { end grestore } if } if
} bdef
/Q /Q_ load 0 !
% ---------------- Graphics state parameters ---------------- %
/d /setdash 2 ~
/i /setflat 1 ~
/j /setlinejoin 1 ~
/J /setlinecap 1 ~
/M /setmiterlimit 1 ~
/w /setlinewidth 1 ~
% ---------------- Color setting ---------------- %
/fcput % <color> <colorspace> fcput -
{ /FillColorSpace gput /FillColor gput
} bdef
/scput % <color> <colorspace> scput -
{ /StrokeColorSpace gput /StrokeColor gput
} bdef
/csdevgray [/DeviceGray] readonly def
/csdevrgb [/DeviceRGB] readonly def
/csdevcmyk [/DeviceCMYK] readonly def
/nullpattern1 mark
/PatternType 1 /PaintType 1 /TilingType 3 /BBox [0 0 0 0]
/XStep 1 /YStep 1 /PaintProc { }
.dicttomark readonly def
/nullpattern2 nullpattern1 dup length dict copy readonly def
/CSdict 11 dict dup begin
/DeviceGray { 0 exch } bdef
/DeviceRGB { [0 0 0] cvx exch } bdef
/DeviceCMYK { [0 0 0 1] cvx exch } bdef
/Indexed
{ dup 1 get csset exch pop
dup 2 index 1 get eq
{ pop }
{ exch 4 array copy dup 1 4 -1 roll put }
ifelse 0 exch
} bdef
/setcolorrendering where
{ pop
/CalGray
{ 1 get dup /Gamma .knownget
{ dup length 1 add dict .copydict
dup /DecodeA 4 -1 roll /exp load 2 packedarray cvx put
}
if /CIEBasedA exch 2 array astore 0 exch
} bdef
/CalRGB
{ 1 get dup /Gamma known 1 index /Matrix known or
{ dup length 2 add dict .copydict
dup /Matrix .knownget { 1 index /MatrixABC 3 -1 roll put } if
dup /Gamma .knownget
{ [ exch { /exp load 2 packedarray cvx } forall
] 1 index /DecodeABC 3 -1 roll put
}
if
}
if /CIEBasedABC exch 2 array astore [0 0 0] cvx exch
} bdef
/CalCMYK { pop //csdevcmyk csset } bdef % not supported yet
}
{ /CalGray { pop //csdevgray csset } bdef
/CalRGB { pop //csdevrgb csset } bdef
/CalCMYK { pop //csdevcmyk csset } bdef
}
ifelse
/Pattern
{ //nullpattern1 1 index type /nametype ne
{ 1 index length 0 ne { pop //nullpattern2 } if
} if
matrix makepattern exch
} bdef
end def
/csset % <cspace> csset <color> <cspace'>
{ dup dup type /nametype ne { 0 get } if //CSdict exch get exec
} bdef
/g { //csdevgray fcput } 1 !
/G { //csdevgray scput } 1 !
/rg { 3 array astore cvx //csdevrgb fcput } 3 !
/RG { 3 array astore cvx //csdevrgb scput } 3 !
/k { 4 array astore cvx //csdevcmyk fcput } 4 !
/K { 4 array astore cvx //csdevcmyk scput } 4 !
/cs { csset fcput } 1 !
/CS { csset scput } 1 !
% We have to break up sc according to the number of operands.
/sc1 { /FillColor gput } 1 !
/SC1 { /StrokeColor gput } 1 !
/sc2 { /FillColor gput } 2 !
/SC2 { /StrokeColor gput } 2 !
/sc3 { /FillColor load astore pop } 3 !
/SC3 { /StrokeColor load astore pop } 3 !
/sc4 { /FillColor load astore pop } 4 !
/SC4 { /StrokeColor load astore pop } 4 !
/sc5 { /FillColor gput } 5 !
/SC5 { /StrokeColor gput } 5 !
% ---------------- Color installation ---------------- %
% Establish a given color (and color space) as current.
/setfillcolor { FillColor FillColorSpace setgcolor } def
/setstrokecolor { StrokeColor StrokeColorSpace setgcolor } def
/CIdict mark % only used for Level 1
/DeviceGray 1 /DeviceRGB 3 /DeviceCMYK 4
/CIEBaseA 1 /CIEBaseABC 3 /CIEBasedDEF 3 /CIEBaseDEFG 4
.dicttomark def
/Cdict 11 dict dup begin % <color...> <colorspace> -proc- -
/DeviceGray { pop setgray } bdef
/DeviceRGB { pop setrgbcolor } bdef
/DeviceCMYK { pop setcmykcolor } bdef
/CIEBasedA
{ dup currentcolorspace eq { pop } { setcolorspace } ifelse setcolor } bdef
/CIEBasedABC /CIEBasedA load def
/CIEBasedDEF /CIEBasedA load def
/CIEBasedDEFG /CIEBasedA load def
/Indexed /setcolorspace where
{ pop /CIEBasedA load }
{ /setindexedcolor cvx }
ifelse def
/Pattern
{ dup currentcolorspace eq { pop } { setcolorspace } ifelse
dup /Matrix get makepattern setcolor
} bdef
end def
/setindexedcolor % <index> [/Indexed base hival proc|str]
% setindexedcolor - (only used for Level 1)
{ mark 3 -1 roll
2 index 3 get % Stack: cspace -mark- index proc|str
dup type /stringtype eq
{ //CIdict 4 index 1 get 0 get get % # of components
dup 4 -1 roll mul exch getinterval { 255 div } forall
}
{ exec
}
ifelse
counttomark 2 add -2 roll pop
1 get setgcolor
} bdef
/setgcolor % (null | <color...>) <colorspace> setgcolor -
{ 1 index null eq
{ pop pop }
{ dup 0 get //Cdict exch get exec }
ifelse
} bdef
/fsexec % <fillop|strokeop> fsexec -
{ % Preserve the current point, if any.
{ currentpoint } stopped
{ $error /newerror false put cvx exec }
{ 3 -1 roll cvx exec moveto }
ifelse
} bdef
% ---------------- Transformations ---------------- %
/cmmatrix matrix def
/cm { //cmmatrix astore concat } 6 !
% ---------------- Path creation ---------------- %
/m /moveto 2 ~
/l /lineto 2 ~
/c /curveto 6 ~
/h /closepath 0 ~
/v { currentpoint 6 2 roll curveto } 4 !
/y { 2 copy curveto } 4 !
/re
{ 4 2 roll moveto exch dup 0 rlineto 0 3 -1 roll rlineto neg 0 rlineto
closepath
} 4 !
% ---------------- Path painting and clipping ---------------- %
/S_ { setstrokecolor /stroke fsexec } bdef
/S { S_ } 0 !
/f { setfillcolor /fill fsexec } 0 !
/f* { setfillcolor /eofill fsexec } 0 !
/n_ { newpath } bdef % don't allow n_ to get bound in
/n { n_ } 0 !
/s { closepath S_ } 0 !
/B_ { gsave setfillcolor fill grestore S_ } bdef
/B /B_ load 0 !
/b { closepath B_ } 0 !
/B*_ { gsave setfillcolor eofill grestore S_ } bdef
/B* /B*_ load 0 !
/b* { closepath B*_ } 0 !
% Clipping:
/Wdict 4 dict dup begin
/S_ { gsave setstrokecolor stroke grestore n_ } bdef
/f { gsave setfillcolor fill grestore n_ } 0 !
/f* { gsave setfillcolor eofill grestore n_ } 0 !
/n_ { end clip newpath } bdef
end readonly def
/W { //Wdict begin } 0 !
/W*dict 4 dict dup begin
/S_ { gsave setstrokecolor stroke grestore n_ } bdef
/f { gsave setfillcolor fill grestore n_ } 0 !
/f* { gsave setfillcolor eofill grestore n_ } 0 !
/n_ { end eoclip newpath } bdef
end readonly def
/W* { //W*dict begin } 0 !
% ---------------- Images ---------------- %
% We mustn't bind these now, since they reference Level 2 operators.
/Is % <imagedict> Is <imagedict> <datasource>
{ dup /DataSource get string /readstring cvx /currentfile cvx
% Stack: imagedict string -readstring- -currentfile-
3 index /FilterProc .knownget
{ dup dup 0 get /ASCIIHexDecode eq exch length 2 eq and
{ pop exch pop /readhexstring cvx exch }
{ exch exec exch exec }
ifelse
}
if 3 1 roll /pop cvx 4 packedarray cvx
} bdef
/EI { } def % placeholder, only needed when writing PostScript
% Note that ID* take a dictionary, not separate values;
% ColorSpace must be a name if it has no parameters;
% DataSource is the size of the row buffer in bytes;
% FilterProc is an optional procedure for constructing the decoding filter;
% and ImageMask is required, not optional.
/csimage
{ /setcolorspace where
{ pop dup /ColorSpace get csset setcolorspace pop image }
{ .colorspaceimage }
ifelse
} def % don't bind, because of Level 2
/ID % <imagedict> ID -
{ Is dup 3 -1 roll dup /ImageMask get
{ setfillcolor dup /Interpolate .knownget not { false } if
{ dup /DataSource 4 -1 roll put /imagemask cvx exec
}
{ { /Width /Height /Decode /ImageMatrix }
{ 1 index exch get exch }
forall pop exch 0 get 0 ne exch
5 -1 roll imagemask
}
ifelse
}
{ dup /ColorSpace get /DeviceGray eq
1 index /BitsPerComponent get 8 le and
1 index /Decode get dup 1 get 1 eq exch 0 get 0 eq and and
1 index /Interpolate .knownget not { false } if not and
{ { /Width /Height /BitsPerComponent /ImageMatrix }
{ 1 index exch get exch }
forall pop 5 -1 roll image
}
{ dup /DataSource 4 -1 roll put csimage
}
ifelse
}
ifelse
% If we were reading with readhexstring,
% skip the terminating > now.
% Stack: datasource
dup type /filetype ne % array or packedarray
{ dup 2 get /readhexstring eq
{ { dup 0 get exec read pop (>) 0 get eq { exit } if } loop
}
if pop
}
{ pop
}
ifelse EI
} 1 !
% IDx handles general images.
/IDx % <imagedict> IDx -
{ Is 1 index /DataSource 3 -1 roll put
csimage EI
} 1 !
% ---------------- Text control ---------------- %
/textbeginpage
{ /TextSpacing 0 def % 0 Tc
/TextLeading 0 def % 0 TL
/TextRenderingMode 0 def % 0 Tr
/TextRise 0 def % 0 Ts
/WordSpacing 0 def % 0 Tw
/TextHScaling 1.0 def % 100 Tz
/TextFont null def
/Show { showfirst } def
} bdef
% Contrary to the statement in the PDF manual, BT and ET *can* be nested,
% if the CharProc for a Type 3 font does a BT/ET itself.
% Since we always call the CharProc inside a q_/Q_, we simply ensure that
% the text state is saved and restored like the rest of the extended
% graphics state.
/settextmatrix
{ TextMatrix concat
TextHScaling 1 ne { TextHScaling 1 scale } if
TextRise 0 ne { 0 TextRise translate } if
} bdef
/settextstate { TextSaveMatrix setmatrix settextmatrix } bdef
/BT
{ currentdict /TextMatrix .knownget
{ identmatrix pop }
{ matrix /TextMatrix gput }
ifelse
currentdict /TextOrigin .knownget
{ dup 0 0 put 1 0 put }
{ [0 0] cvx /TextOrigin gput }
ifelse
{ showfirst } /Show gput
currentdict /TextSaveMatrix .knownget not
{ matrix dup /TextSaveMatrix gput }
if currentmatrix pop settextmatrix 0 0 moveto
TextFont dup null eq { pop } { setfont } ifelse
} bind 0 !
/ET
{ TextSaveMatrix setmatrix
} bind 0 !
/Tc_ { /TextSpacing gput { showfirst } /Show gput } bdef
/Tc { Tc_ } 1 !
/TL { /TextLeading gput } bind 1 !
/Tr { /TextRenderingMode gput { showfirst } /Show gput } bind 1 !
/Ts { /TextRise gput settextstate } bind 1 !
/Tw_ { /WordSpacing gput { showfirst } /Show gput } bdef
/Tw { Tw_ } 1 !
/Tz { 100 div /TextHScaling gput settextstate } bind 1 !
% ---------------- Font control ---------------- %
/Tf % <font> <scale> Tf -
{ dup 1 eq { pop } { scalefont } ifelse
dup setfont /TextFont gput
} 2 !
% Read a CFF font.
/FRD % <resdict> <file> FRD -
{ /FontSetInit /ProcSet findresource begin ReadData
} 2 !
% Copy a font, removing its FID. If changed is true, also remove
% the UniqueID and XUID, if any. If the original dictionary doesn't have
% the keys being removed, don't copy it.
/.copyfontdict % <font> <changed> .copyfontdict <dict>
{ 1 index /FID known
1 index { 2 index /UniqueID known or 2 index /XUID known or } if
{ % We add 1 to the length just in case the original
% didn't have a FID.
exch dup length 1 add dict exch
{ % Stack: changed newfont key value
1 index /FID eq 4 index
{ 2 index /UniqueID eq or 2 index /XUID eq or }
if not { 3 copy put } if pop pop
}
forall exch
}
if pop
} bdef
% Insert a new Encoding or Metrics into a font if necessary.
% Return a possibly updated font, and a flag to indicate whether
% the font was actually copied.
/.updatefont % <font> <Encoding|null> <Metrics|null> .updatefont
% <font'> <copied>
{ 2 index 4 1 roll
dup null ne
{ 3 -1 roll true .copyfontdict dup /Metrics 4 -1 roll put exch }
{ pop }
ifelse
dup null ne 1 index 3 index /Encoding get ne and
{ exch false .copyfontdict dup /Encoding 4 -1 roll put }
{ pop }
ifelse exch 1 index ne
} bdef
% ---------------- Text positioning ---------------- %
/Td_
{ TextOrigin exch 4 -1 roll add 3 1 roll add
2 copy /TextOrigin load astore pop moveto
} bdef
/Td { Td_ } 2 !
/TD { dup neg /TextLeading gput Td_ } 2 !
/T*_ { 0 TextLeading neg Td_ } bdef
/T* { T*_ } 0 !
/Tm
{ TextMatrix astore pop settextstate
0 0 /TextOrigin load astore pop
0 0 moveto
} 6 !
% ---------------- Text painting ---------------- %
/textrenderingprocs [ % (0 is handled specially)
{ tf } { tS } { tB } { tn }
% We don't know what the clipping modes mean....
4 copy
] readonly def
/setshowstate
{ WordSpacing 0 eq TextSpacing 0 eq and
{ TextRenderingMode 0 eq
{ { setfillcolor show } }
{ { false charpath textrenderingprocs TextRenderingMode get exec } }
ifelse
}
{ TextRenderingMode 0 eq
{ WordSpacing 0 eq
{ { setfillcolor TextSpacing exch 0 exch ashow } }
{ TextSpacing 0 eq
{ { setfillcolor WordSpacing exch 0 exch 32 exch widthshow } }
{ { setfillcolor WordSpacing exch TextSpacing exch 0 32 4 2 roll 0 exch awidthshow } }
ifelse
}
ifelse
}
{ { WordSpacing TextSpacing 2 index
% Implement the combination of t3 and false charpath.
% Stack: xword xchar string
0 1 2 index length 1 sub
{ 2 copy 1 getinterval false charpath
% Stack: xword xchar string i
4 copy get 32 eq { add } { exch pop } ifelse 0 rmoveto
pop
}
for pop pop pop pop
textrenderingprocs TextRenderingMode get exec
}
}
ifelse
}
ifelse /Show gput
} bdef
/showfirst { setshowstate Show } def
/Tj { Show } 1 !
/' { T*_ Show } 1 !
/" { exch Tc_ exch Tw_ T*_ Show } 3 !
% TJ expects a mark followed by arguments, not an array.
/TJ
{ counttomark -1 1
{ -1 roll dup type /stringtype eq
{ Show
}
{ -1000 div
currentfont /ScaleMatrix .knownget { 0 get mul } if
0 rmoveto
}
ifelse
}
for pop
% Adobe implementations don't accept /[, so we don't either.
} ([) cvn !
/tf { setfillcolor currentpoint fill moveto } bdef
/tn { currentpoint newpath moveto } bdef
% For stroking characters, temporarily restore the graphics CTM so that
% the line width will be transformed properly.
/Tmatrix matrix def
/tS
{ setstrokecolor
currentpoint //Tmatrix currentmatrix TextSaveMatrix setmatrix stroke
setmatrix moveto
} bdef
/tB { gsave tf grestore tS } bdef
end readonly put % GS_PDF_ProcSet
setglobal