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+% Copyright (C) 1994, 1995 Aladdin Enterprises. 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_pfile.ps 6300 2005-12-28 19:56:24Z giles $
+% Runtime support for minimum-space fonts and packed files.
+
+% ****** NOTE: This file must be kept consistent with
+% ****** packfile.ps and wrfont.ps.
+
+% ---------------- Packed file support ---------------- %
+
+% A packed file is the concatenation of several file groups, each of which
+% is the result of compressing several files concatenated together.
+% The packed file begins with a procedure that creates an appropriate
+% decoding filter for each file group, as follows:
+% <group-subfile-filter> -proc- <group-decode-filter>
+% Thus, accessing an individual file requires 4 parameters:
+% the starting address and length of the outer compressed file,
+% and the starting address and length of the inner file.
+/.packedfilefilter % <file> <ostart> <olength> <istart> <ilength>
+ % .packedfilefilter <filter>
+ { 4 index systemdict begin token pop end 6 1 roll
+ % Stack: fproc file ostart olength istart ilength
+ 4 index 5 -1 roll setfileposition
+ % Stack: fproc file olength istart ilength
+ 4 -2 roll () /SubFileDecode filter
+ % Stack: fproc istart ilength ofilter
+ 4 -1 roll exec
+ % Filters don't support setfileposition, so we must skip data
+ % by reading it into a buffer. We rely on the fact that
+ % save/restore don't affect file positions.
+ % Stack: istart ilength dfilter
+ save exch 64000 string
+ % Stack: istart ilength save dfilter scratch
+ 4 index 1 index length idiv { 2 copy readstring pop pop } repeat
+ 2 copy 0 8 -1 roll 2 index length mod getinterval readstring pop pop pop
+ % Stack: ilength save dfilter
+ exch restore exch () /SubFileDecode filter
+ } bind def
+
+% Run a packed library file.
+/.runpackedlibfile % <filename> <ostart> <olength> <istart> <ilength>
+ % .runpackedlibfile
+ { 5 -1 roll findlibfile
+ { exch pop dup 6 2 roll .packedfilefilter
+ currentobjectformat exch 1 setobjectformat run
+ setobjectformat closefile
+ }
+ { 5 1 roll /findlibfile .systemvar /undefinedfilename signalerror
+ }
+ ifelse
+ } bind def
+
+% ---------------- Compacted font support ---------------- %
+
+% Compacted fonts written by wrfont.ps depend on the existence and
+% specifications of the procedures and data in this section.
+
+/.compactfontdefault mark
+ /PaintType 0
+ /FontMatrix [0.001 0 0 0.001 0 0] readonly
+ /FontType 1
+ /Encoding StandardEncoding
+.dicttomark readonly def
+
+/.checkexistingfont % <fontname> <uid> <privatesize> <fontsize>
+ % .checkexistingfont
+ % {} (<font> on d-stack)
+ % <fontname> <uid> <privatesize> <fontsize>
+ % .checkexistingfont
+ % -save- --restore-- (<font> on d-stack)
+ { FontDirectory 4 index .knownget
+ { dup /UniqueID .knownget
+ { 4 index eq exch /FontType get 1 eq and }
+ { pop false }
+ ifelse
+ }
+ { false
+ }
+ ifelse
+ { save /restore load 6 2 roll }
+ { {} 5 1 roll }
+ ifelse
+ dict //.compactfontdefault exch .copydict begin
+ dict /Private exch def
+ Private begin
+ /MinFeature {16 16} def
+ /Password 5839 def
+ /UniqueID 1 index def
+ end
+ /UniqueID exch def
+ /FontName exch def
+ } bind def
+
+/.knownEncodings [
+ ISOLatin1Encoding
+ StandardEncoding
+ SymbolEncoding
+] readonly def
+
+/.readCharStrings % <count> <encrypt> .readCharStrings <dict>
+ { exch dup dict dup 3 -1 roll
+ { currentfile token pop dup type /integertype eq
+ { dup -8 bitshift //.knownEncodings exch get exch 255 and get } if
+ currentfile token pop dup type /nametype eq
+ { 2 index exch get
+ }
+ { % Stack: encrypt dict dict key value
+ 4 index { 4330 exch dup .type1encrypt exch pop } if
+ readonly
+ }
+ ifelse put dup
+ }
+ repeat pop exch pop
+ } bind def