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% Copyright (C) 1995, 2000 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_cidfn.ps,v 1.27 2003/05/23 09:57:34 igor Exp $
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% ProcSet for implementing CIDFont and CIDMap resources.
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% When this is run, systemdict is still writable.
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% ---------------- Defining CIDFont resources ---------------- %
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% Define a CIDFont resource. This is the defineresource implementation for
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% the CIDFont resource category.
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/.checkfonttype { % <cidfont> <fonttype> .checkfonttype <cidfont> <new?>
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1 index /FID known {
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1 index /FontType get ne {
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/definefont cvx /invalidfont signalerror
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} if false
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} {
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1 index /FontType 3 -1 roll put true
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} ifelse
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} bind def
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/.cidfonttypes where { pop } { /.cidfonttypes 6 dict def } ifelse
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.cidfonttypes
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30 dict begin
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% The key in .cidfonttypes is the CIDFontType value;
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% the value is a procedure that takes a font name and the CIDFont dictionary
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% and replaces the latter with a real font.
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% ------ CIDFontType 0 (FontType 9) ------ %
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% We add the following entries to the CIDFont dictionary, in addition to
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% the ones documented by Adobe:
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% SubrCache - dictionary for caching Subr arrays
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% For CIDFonts where we read the data from disk incrementally:
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% GlyphData is 0 (arbitrary)
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% DataSource - a ReusableStreamDecode filter for the data
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% We also add a FID entry, and possibly a Subrs entry, to each element of
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% FDArray.
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dup 0 {
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9 .checkfonttype {
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/CIDInit /ProcSet findresource begin
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.completefont9
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end
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} if
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1 index exch .buildfont9 exch pop
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} put % Don't bind it here, because gs_fapi.ps redefines .buildfont9
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% Add entries to a new CIDFontType 0 font per documentation (FontMatrix)
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% or for .buildfont9 (FDArray.Private.Subrs).
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/.completefont9 { % <cidfont0> .completefont9 <cidfont0>
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currentglobal 3 1 roll dup gcheck setglobal
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dup /FontMatrix known not {
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dup /FontMatrix [0.001 0 0 0.001 0 0] put
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dup /FDArray get {
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currentglobal exch dup gcheck setglobal
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dup /FontMatrix get [1000 0 0 1000 0 0] matrix concatmatrix
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/FontMatrix exch put
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setglobal
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} forall
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} if
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dup /FDArray get {
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% Read the Subrs if necessary.
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dup /Private get dup /Subrs known not {
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dup /SubrCount .knownget {
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% Stack: font Private SubrCount
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currentglobal 3 1 roll 1 index gcheck setglobal
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array 1 index /Subrs 3 -1 roll put
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% Stack: font global Private
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2 index begin begin .loadsubrs end end
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setglobal
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} {
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pop
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} ifelse readonly pop
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} {
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pop pop
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} ifelse
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} forall
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3 -1 roll setglobal
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} bind def
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% Read some Subrs for the current Type 1 subfont.
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% The subfont's Private dict is currentdict; the CIDFont itself is the
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% next dictionary on the stack.
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/.readsubrs { % <Subrs> <start> .readsubrs <Subrs>
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1 SubrCount 1 sub {
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dup SDBytes mul SubrMapOffset add
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dup SDBytes .readint exch SDBytes add SDBytes .readint
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1 index sub string ReadString 2 index 3 1 roll put
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} for
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} bind def
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% Ensure that all the Subrs for the current Type 1 subfont are loaded.
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% The subfont's Private dict is currentdict; the CIDFont itself is the
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% next dictionary on the stack.
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/.loadsubrs {
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Subrs length 0 ne {
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SubrCache SubrMapOffset .knownget {
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% We've already loaded some Subrs at this offset.
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% Make sure we've got as many as we need.
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dup length SubrCount lt {
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% We need to load more.
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SubrCount array exch 1 index copy length .readsubrs
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SubrCache SubrMapOffset 2 index put
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} if
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} {
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% We haven't loaded any Subrs at this offset yet.
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SubrCount array 0 .readsubrs
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SubrCache SubrMapOffset 2 index put
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} ifelse
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Subrs copy pop
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} if
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} bind def
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% ------ CIDFontType 1 (FontType 10) ------ %
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dup 1 {
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10 .checkfonttype pop
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1 index exch .buildfont10 exch pop
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} put % Don't bind it here because gs_fapi.ps redefines .buildfont10
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% ------ CIDFontType 2 (FontType 11) ------ %
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dup 2 {
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11 .checkfonttype pop
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1 index exch .buildfont11 exch pop
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} put % Don't bind it here because gs_fapi.ps redefines .buildfont11
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pop % .cidfonttypes
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% ---------------- Reading CIDFontType 0 files ---------------- %
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/StartData { % <(Binary)|(Hex)> <datalength> StartData -
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% (currentdict is CID font dict)
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% If we're loading a resource file and the data format is
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% binary, we can just save a pointer to the data and load it
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% incrementally.
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mark {
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% Previous versions of this code made provisions for
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% reading hex-encoded data incrementally. Since hex data
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% doesn't seem to be used in practice, we no longer bother.
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2 index (Binary) ne { stop } if
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currentfile .currentresourcefile ne { stop } if
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% Hack: the pdfwrite driver relies on finalization to write
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% out fonts. However, the font may be finalized after the
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% resource file, in which case the resource file will be
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% closed. So if the current output device is pdfwrite,
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% don't use incremental loading.
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currentdevice .devicename /pdfwrite eq { stop } if
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currentfile fileposition
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} .internalstopped {
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% File is not positionable, or uses hex data.
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% Load the data now.
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cleartomark exch (Hex) eq
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{ { currentfile exch readhexstring pop } }
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{ { currentfile exch readstring pop } }
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ifelse exch
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% Stack: readproc length
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dup 65400 le {
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% readstring with a 0-length string causes a rangecheck,
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% but a data length of 0 is allowed.
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string dup () ne { 1 index exec } if
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} {
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mark 3 1 roll {
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% Stack: mark str ... readproc length
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dup 0 eq { pop exit } if
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dup 65400 .min dup string 3 index exec
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% Stack: mark str ... readproc length newstrlen newstr
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4 1 roll sub
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} loop
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counttomark 1 add 1 roll ]
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} ifelse
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/GlyphData exch def
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% If we were reading hex data, skip past the >.
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2 get { readhexstring } 0 get eq {
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currentfile 0 (>) .subfiledecode dup flushfile closefile
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} if
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} {
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% File is positionable and binary, just save a pointer.
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% Stack: (Binary) length -mark- pos
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/GlyphData 0 def
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exch pop 3 -1 roll pop exch
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% Stack: pos length
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/DataSource currentfile 2 index () .subfiledecode true .reusablestream def
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currentfile 3 1 roll add setfileposition
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} ifelse
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/SubrCache 10 dict def
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CIDFontName currentdict /CIDFont defineresource pop
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end % CID font dict
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end % resource category dict
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} bind def
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% Some Adobe fonts include the line
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% /Setup /cid_Setup load def
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% This is apparently included only to prevent proper, conforming PostScript
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% interpreters (as opposed to ATM or a special Adobe font loader) from
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% loading the font, since Setup is not referenced anywhere else in the file.
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/cid_Setup { } def
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currentdict end
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% ---------------- Rendering ---------------- %
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% ------ Generic ------ %
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% Read a string at a given offset in a "file" (binary file or
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% GlyphData in RAM).
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/ReadString { % <pos> <string> ReadString <string>
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GlyphData 0 eq {
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% Read from the file.
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DataSource 3 -1 roll setfileposition
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DataSource exch readstring pop
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} {
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% Read from a string or an array of strings.
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GlyphData .stringsreadstring
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} ifelse
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} bind def
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/.stringsreadstring % <pos> <string> <strings> .stringsreadstring
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% <vmstring>
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{ dup type /stringtype eq
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{ 3 1 roll length getinterval
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}
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{ { % Stack: pos string glyphdata
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dup 0 get length dup 4 index gt { exit } if
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4 -1 roll exch sub 3 1 roll
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dup length 1 sub 1 exch getinterval
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}
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loop
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% Stack: pos string glyphdata glyphdata[0]length
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% We know no request can span more than 2 strings.
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3 index 3 index length add 1 index le
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{ % Request fits in a single string: just return a substring.
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pop 0 get 3 1 roll length getinterval
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}
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{ % Request spans 2 strings. Copy the first part.
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1 index 0 get 4 index 3 -1 roll 1 index sub getinterval
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2 index copy
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% Copy the second part.
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% Stack: pos str glyphdata str1
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length exch 1 get 0 3 index length
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3 index sub getinterval 2 index 3 1 roll putinterval
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exch pop
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}
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ifelse
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}
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ifelse
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} bind def
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% Interpret a byte string as a (big-endian) integer.
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/.cvbsi % <bytes> .cvbsi <int>
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{ 0 exch { exch 8 bitshift add } forall
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} bind def
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% Read an integer from binary data.
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/.readint % <pos> <nbytes> .readint <int>
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{ string ReadString .cvbsi
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} bind def
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% ------ CIDFontType 0 ------ %
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/.readglyphdata {
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currentfont exch .type9mapcid
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FDArray exch get exch
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} bind def
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% BuildGlyph procedure for CIDFontType 0.
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% The name %Type9BuildGlyph is known to the interpreter.
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/.cid0buildstring 10 string def
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(%Type9BuildGlyph) cvn { % <cidfont> <cid> %Type9BuildGlyph -
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.currentglobal 3 1 roll 1 index gcheck .setglobal
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1 index begin
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dup .readglyphdata dup null eq {
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% Substitute CID 0. **** WRONG ****
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pop pop 0 .readglyphdata
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} if
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% Stack: cidfont cid subfont charstring
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dup null eq { pop pop pop pop } { %**** WRONG ****
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4 -1 roll pop
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3 1 roll exch dup 4 -1 roll 0 0 moveto
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3 index /FontType get 2 eq { .type2execchar } { .type1execchar } ifelse
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} ifelse %**** WRONG ****
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end
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.setglobal
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} bind def
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% ------ CIDFontType 2 ------ %
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% BuildGlyph procedure for CIDFontType 2.
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% The name %Type11BuildGlyph is known to the interpreter.
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(%Type11BuildGlyph) cvn { % <cidfont> <cid> %Type11BuildGlyph -
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% We must be prepared for out-of-range CIDs.
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2 copy { .type11mapcid } .internalstopped {
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pop /CharStrings get /.notdef get
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} if
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% Stack: cidfont cid glyphindex
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1 index exch .type42execchar
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} bind def
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% ---------------- Define resources ---------------- %
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languagelevel exch 2 .setlanguagelevel
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% Define the CIDInit ProcSet resource.
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% The ProcSet dictionary is still on the stack.
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% We might have loaded CMap support already. However, Adobe's
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% protected font downloader defines a CIDInit ProcSet that will be
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% loaded from the filesystem later, so we must check specifically
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% for the ProcSet being defined in VM.
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/CIDInit /ProcSet 2 copy resourcestatus { pop 0 eq } { false } ifelse {
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pop pop findresource dup length 4 index length add dict .copydict
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4 -1 roll exch .copydict
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} {
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3 -1 roll
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} ifelse exch defineresource pop
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% Define the CIDFont resource category.
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% We break out .buildcidfont because it appears that at least for
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% Type 32 (CIDFontType 4) fonts, the font can be registered in the Font
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% category with only a CIDFontType and no FontType.
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/.buildcidfont { % <name> <fontdict> .buildcidfont
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% <name> <cidfont>
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systemdict /ProvideUnicode .knownget not { false } if {
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/FontEmulationProcs /ProcSet findresource
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/ProvideUnicodeDecoding get exec
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} if
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dup /CIDFontType get //.cidfonttypes exch get exec
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} odef
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/CIDFont /Generic /Category findresource dup length dict .copydict
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dup /InstanceType /dicttype put
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dup /DefineResource {
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.buildcidfont
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/Generic /Category findresource /DefineResource get exec
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} put
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% CIDFonts may be defined in CFF OpenType files.
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% Check for this here.
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/.loadcidfontresource {
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dup .ResourceFile {
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355 |
{.loadfont} .execasresource
|
|
|
356 |
} {
|
|
|
357 |
dup /undefinedresource signalerror
|
|
|
358 |
} ifelse
|
|
|
359 |
} bind def
|
|
|
360 |
dup /.LoadResource {
|
|
|
361 |
currentglobal {
|
|
|
362 |
.loadcidfontresource
|
|
|
363 |
} {
|
|
|
364 |
true setglobal {.loadcidfontresource} stopped false setglobal {stop} if
|
|
|
365 |
} ifelse
|
|
|
366 |
} bind put
|
|
|
367 |
|
|
|
368 |
/Category defineresource pop
|
|
|
369 |
|
|
|
370 |
% Add the new FontType resources.
|
|
|
371 |
|
|
|
372 |
9 1 11 { dup /FontType defineresource pop } for
|
|
|
373 |
|
|
|
374 |
% Add the new FMapType resource.
|
|
|
375 |
|
|
|
376 |
9 dup /FMapType defineresource pop
|
|
|
377 |
|
|
|
378 |
% Define the CIDMap resource category.
|
|
|
379 |
% These aren't documented, but it's clear what they are for:
|
|
|
380 |
% to give names to CIDMaps for CIDFontType 2 fonts.
|
|
|
381 |
|
|
|
382 |
/CIDMap /Generic /Category findresource dup length dict .copydict
|
|
|
383 |
dup /.CheckResource {
|
|
|
384 |
% Allow a string, an array of strings, or (as of Adobe release 3011)
|
|
|
385 |
% a dictionary.
|
|
|
386 |
dup type dup dup /stringtype eq exch /dicttype eq or {
|
|
|
387 |
pop true
|
|
|
388 |
} {
|
|
|
389 |
dup /arraytype eq exch /packedarraytype eq or {
|
|
|
390 |
true exch { type /stringtype eq and } forall
|
|
|
391 |
} {
|
|
|
392 |
false
|
|
|
393 |
} ifelse
|
|
|
394 |
} ifelse
|
|
|
395 |
} bind put
|
|
|
396 |
/Category defineresource pop
|
|
|
397 |
|
|
|
398 |
.setlanguagelevel
|
|
|
399 |
|
|
|
400 |
%% Replace 1 (gs_ciddc.ps)
|
|
|
401 |
(gs_ciddc.ps) runlibfile
|