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% Copyright (C) 1994, 1995 Aladdin Enterprises. All rights reserved.
%
% This program is free software; you can redistribute it and/or modify it
% under the terms of the GNU General Public License as published by the
% Free Software Foundation; either version 2 of the License, or (at your
% option) any later version.
%
% This program is distributed in the hope that it will be useful, but
% WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
% Public License for more details.
%
% You should have received a copy of the GNU General Public License along
% with this program; if not, write to the Free Software Foundation, Inc.,
% 59 Temple Place, Suite 330, Boston, MA, 02111-1307.
% $Id: gs_pfile.ps,v 1.2.6.1.2.1 2003/04/12 14:02:38 giles Exp $
% 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 1000 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 load /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
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