128 lines
4.2 KiB
PostScript
128 lines
4.2 KiB
PostScript
% Copyright (C) 1994, 1995 Aladdin Enterprises. All rights reserved.
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%
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% This software is provided AS-IS with no warranty, either express or
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% implied.
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%
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% This software is distributed under license and may not be copied,
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% modified or distributed except as expressly authorized under the terms
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% of the license contained in the file LICENSE in this distribution.
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%
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% For more information about licensing, please refer to
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% http://www.ghostscript.com/licensing/. For information on
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% commercial licensing, go to http://www.artifex.com/licensing/ or
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% contact Artifex Software, Inc., 101 Lucas Valley Road #110,
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% San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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% $Id: gs_pfile.ps,v 1.5 2003/08/08 18:45:05 ray Exp $
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% Runtime support for minimum-space fonts and packed files.
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% ****** NOTE: This file must be kept consistent with
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% ****** packfile.ps and wrfont.ps.
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% ---------------- Packed file support ---------------- %
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% A packed file is the concatenation of several file groups, each of which
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% is the result of compressing several files concatenated together.
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% The packed file begins with a procedure that creates an appropriate
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% decoding filter for each file group, as follows:
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% <group-subfile-filter> -proc- <group-decode-filter>
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% Thus, accessing an individual file requires 4 parameters:
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% the starting address and length of the outer compressed file,
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% and the starting address and length of the inner file.
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/.packedfilefilter % <file> <ostart> <olength> <istart> <ilength>
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% .packedfilefilter <filter>
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{ 4 index systemdict begin token pop end 6 1 roll
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% Stack: fproc file ostart olength istart ilength
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4 index 5 -1 roll setfileposition
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% Stack: fproc file olength istart ilength
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4 -2 roll () /SubFileDecode filter
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% Stack: fproc istart ilength ofilter
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4 -1 roll exec
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% Filters don't support setfileposition, so we must skip data
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% by reading it into a buffer. We rely on the fact that
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% save/restore don't affect file positions.
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% Stack: istart ilength dfilter
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save exch 64000 string
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% Stack: istart ilength save dfilter scratch
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4 index 1 index length idiv { 2 copy readstring pop pop } repeat
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2 copy 0 8 -1 roll 2 index length mod getinterval readstring pop pop pop
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% Stack: ilength save dfilter
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exch restore exch () /SubFileDecode filter
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} bind def
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% Run a packed library file.
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/.runpackedlibfile % <filename> <ostart> <olength> <istart> <ilength>
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% .runpackedlibfile
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{ 5 -1 roll findlibfile
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{ exch pop dup 6 2 roll .packedfilefilter
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currentobjectformat exch 1 setobjectformat run
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setobjectformat closefile
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}
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{ 5 1 roll /findlibfile load /undefinedfilename signalerror
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}
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ifelse
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} bind def
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% ---------------- Compacted font support ---------------- %
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% Compacted fonts written by wrfont.ps depend on the existence and
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% specifications of the procedures and data in this section.
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/.compactfontdefault mark
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/PaintType 0
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/FontMatrix [0.001 0 0 0.001 0 0] readonly
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/FontType 1
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/Encoding StandardEncoding
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.dicttomark readonly def
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/.checkexistingfont % <fontname> <uid> <privatesize> <fontsize>
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% .checkexistingfont
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% {} (<font> on d-stack)
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% <fontname> <uid> <privatesize> <fontsize>
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% .checkexistingfont
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% -save- --restore-- (<font> on d-stack)
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{ FontDirectory 4 index .knownget
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{ dup /UniqueID .knownget
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{ 4 index eq exch /FontType get 1 eq and }
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{ pop false }
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ifelse
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}
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{ false
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}
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ifelse
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{ save /restore load 6 2 roll }
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{ {} 5 1 roll }
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ifelse
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dict //.compactfontdefault exch .copydict begin
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dict /Private exch def
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Private begin
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/MinFeature {16 16} def
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/Password 5839 def
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/UniqueID 1 index def
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end
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/UniqueID exch def
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/FontName exch def
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} bind def
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/.knownEncodings [
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ISOLatin1Encoding
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StandardEncoding
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SymbolEncoding
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] readonly def
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/.readCharStrings % <count> <encrypt> .readCharStrings <dict>
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{ exch dup dict dup 3 -1 roll
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{ currentfile token pop dup type /integertype eq
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{ dup -8 bitshift //.knownEncodings exch get exch 255 and get } if
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currentfile token pop dup type /nametype eq
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{ 2 index exch get
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}
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{ % Stack: encrypt dict dict key value
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4 index { 4330 exch dup .type1encrypt exch pop } if
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readonly
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}
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ifelse put dup
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}
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repeat pop exch pop
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} bind def
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