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