1457 lines
45 KiB
PostScript
1457 lines
45 KiB
PostScript
% Copyright (C) 1996-2003 artofcode LLC. 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_ttf.ps,v 1.48 2005/09/22 16:11:37 ray Exp $
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% Support code for direct use of TrueType fonts.
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% (Not needed for Type 42 fonts.)
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% Note that if you want to use this file without including the ttfont.dev
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% option when you built Ghostscript, you will need to load the following
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% files before this one:
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% lib/gs_mgl_e.ps
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% lib/gs_mro_e.ps
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% lib/gs_wan_e.ps
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% Thanks to B. Jackowski and GUST (the Polish TeX Users' Group) for
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% the glyf-splitting code.
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% ---------------- Font loading machinery ---------------- %
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% Augment the FONTPATH machinery so it recognizes TrueType fonts.
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/.scanfontheaders where {
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pop /.scanfontheaders [
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.scanfontheaders aload pop (\000\001\000\000*) (true*)
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] def
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} if
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% <file> <key> .findfontvalue <value> true
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% <file> <key> .findfontvalue false
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% Closes the file in either case.
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/.findnonttfontvalue /.findfontvalue load def
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/.findfontvalue {
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1 index read {
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2 index 1 index unread
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% beginning with binary 0 or 't' (TrueType), or 'O' (OpenType)
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dup 0 eq 1 index (O) 0 get eq or exch (t) 0 get eq or {
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% If this is a font at all, it's a TrueType font.
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dup /FontType eq {
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pop closefile 42 true
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} {
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dup /FontName eq { pop .findttfontname } { pop closefile false } ifelse
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} ifelse
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} {
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% Not a TrueType font.
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.findnonttfontvalue
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} ifelse
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} { pop closefile false } ifelse
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} bind def
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% <file> .findttfontname <fname> true
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% <file> .findttfontname false
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% Closes the file in either case.
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/.findttfontname {
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//true 0 .loadttfonttables
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tabdict /name .knownget {
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dup 8 getu32 f exch setfileposition
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12 getu32 string f exch readstring pop
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6 findname
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} {
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false
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} ifelse
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f closefile end end
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} bind def
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% Load a font file that might be a TrueType font.
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% <file> .loadfontfile -
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/.loadnonttfontfile /.loadfontfile load def
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/.loadfontfile {
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dup read pop 2 copy unread 0 eq {
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% If this is a font at all, it's a TrueType font.
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.loadttfont pop
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} {
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% Not a TrueType font.
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.loadnonttfontfile
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} ifelse
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} bind def
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% ---------------- Automatic Type 42 generation ---------------- %
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% Load a TrueType font from a file as a Type 42 PostScript font.
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% The thing that makes this really messy is the handling of encodings.
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% There are 2 interacting tables that affect the encoding:
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% 'cmap' provides multiple maps from character codes to glyph indices
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% 'post' maps glyph indices to glyph names (if present)
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% What we need to get out of this is:
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% Encoding mapping character codes to glyph names
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% (the composition of cmap and post)
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% CharStrings mapping glyph names to glyph indices
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% (the inverse of post)
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% If the post table is missing, we have to take a guess based on the cmap
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% table.
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/.loadttfontdict 50 dict dup begin
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/orgXUID AladdinEnterprisesXUID def
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/maxstring 32764 def % half the maximum length of a PostScript string,
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% must be a multiple of 4 (for hmtx / loca / vmtx)
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/.invert_encoding % <array> invert_encoding <dict>
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{ dup 256 dict exch
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0 exch 1 exch length 1 sub { % [] <> i
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dup 3 index exch get % [] <> i v
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dup /.notdef ne {
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exch 2 index 2 index .knownget {
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dup type /arraytype eq {
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[ exch aload pop counttomark 2 add -1 roll ]
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} {
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exch 2 array astore
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} ifelse
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} if 2 index 3 1 roll put
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} {
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pop pop
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} ifelse
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} for
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exch pop
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} bind def
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% Define the Macintosh standard mapping from characters to glyph indices.
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/MacRomanEncoding dup .findencoding def
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/MacGlyphEncoding dup .findencoding def
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% Invert the MacRomanEncoding.
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/.romanmacdict MacRomanEncoding .invert_encoding def
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% Define remapping for misnamed glyphs in TrueType 'post' tables.
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% There are probably a lot more than this!
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/postremap mark
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/Cdot /Cdotaccent
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/Edot /Edotaccent
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/Eoverdot /Edotaccent
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/Gdot /Gdotaccent
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/Ldot /Ldotaccent
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/Zdot /Zdotaccent
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/cdot /cdotaccent
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/edot /edotaccent
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/eoverdot /edotaccent
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/gdot /gdotaccent
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/ldot /ldotaccent
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/zdot /zdotaccent
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.dicttomark readonly def
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% Array used for fast pre-filling of cmap array
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/.array1024z [ 1024 { 0 } repeat ] def
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% ---- Utilities ---- %
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% Define a serial number for creating unique XUIDs for TrueType fonts.
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% We used to use the checkSumAdjustment value from the font, but this is
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% not reliable, since some fonts don't set it correctly.
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% Note that we must do this in a string to make it immune to save/restore.
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/xuidstring <80000000> def
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/curxuid { % - curxuid <int>
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0 xuidstring { exch 8 bitshift exch add } forall
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} bind def
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/nextxuid { % - nextxuid -
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3 -1 0 {
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xuidstring 1 index 2 copy get dup 255 ne {
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1 add put pop exit
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} if pop 0 put pop
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} for
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} bind def
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% <string> <index> getu16 <integer>
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/getu16 {
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2 copy get 8 bitshift 3 1 roll 1 add get add
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} bind def
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% <string> <index> gets16 <integer>
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/gets16 {
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getu16 16#8000 xor 16#8000 sub
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} bind def
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% <string> <index> getu32 <integer>
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/getu32 {
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2 copy getu16 16 bitshift 3 1 roll 2 add getu16 add
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} bind def
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% <string> <index> gets32 <integer>
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/gets32 {
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2 copy gets16 16 bitshift 3 1 roll 2 add getu16 add
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} bind def
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16#ffffffff 0 gt { % 64-bit sign extension
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{ /curxuid /gets32 } {
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mark 1 index load aload pop { 16#80000000 xor 16#80000000 sub } aload pop
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.packtomark cvx def
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} bind forall
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} if
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% <string> <index> <integer> putu16 -
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/putu16 {
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3 copy -8 bitshift put
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exch 1 add exch 16#ff and put
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} bind def
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% <string> <index> <integer> putu32 -
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/putu32 {
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3 copy -16 bitshift putu16
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exch 2 add exch 16#ffff and putu16
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} bind def
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% <nametable> <nameid> findname <string> true
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% <nametable> <nameid> findname false
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/findname {
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TTFDEBUG { (findname: ) print dup =only } if
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false 3 1 roll
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1 index length 0 gt { % check for zero length name table
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0 1 3 index 2 getu16 1 sub {
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% Stack: false table id index
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12 mul 6 add 2 index exch 12 getinterval
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dup 6 getu16 2 index eq {
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% We found the name we want.
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exch pop
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% Stack: false table record
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dup 10 getu16 2 index 4 getu16 add
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1 index 8 getu16 4 -1 roll 3 1 roll
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3 copy add 1 index length
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le {
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pop
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getinterval exch
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% Stack: false string record
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% Check for 8- vs. 16-bit characters.
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is2byte { string2to1 } if true null 4 -1 roll exit
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} {
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pop pop pop pop
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false
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exit
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} ifelse
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} if pop
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} for
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} if
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pop pop
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TTFDEBUG {
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dup { ( = ) print 1 index == } { ( not found) = } ifelse
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} if
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} bind def
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% <namerecord> is2byte <bool>
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/is2byte {
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dup 0 getu16 {
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{ pop true } % Apple Unicode
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{ pop false } % Macintosh Script manager
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{ 1 getu16 1 eq } % ISO
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{ 1 getu16 1 eq } % Microsoft
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} exch get exec
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} bind def
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% <string2> string2to1 <string>
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/string2to1 {
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dup length 2 idiv string dup
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0 1 3 index length 1 sub {
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3 index 1 index 2 mul 1 add get put dup
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} for pop exch pop
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} bind def
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% Each procedure in this dictionary is called as follows:
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% <encodingtable> proc <glypharray>
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/cmapformats mark
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0 { % Apple standard 1-to-1 mapping.
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6 256 getinterval { } forall 256 packedarray
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} bind
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2 { % Apple 16bit CJK (ShiftJIS etc)
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% /sHK_sz subHeaderKey_size % 1 * uint16
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% /sH_sz subHeader_size % 4 * uint16
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% /sH_len subHeader_length
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% /cmapf2_tblen total table length
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% /cmapf2_lang language code (not used)
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% /sHKs subHeaderKeys
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/sHK_sz 2 def
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/sH_sz 8 def
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dup 2 getu16 /cmapf2_tblen exch def
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dup 4 getu16 /cmapf2_lang exch def
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dup 6 256 sHK_sz mul getinterval /sHKs exch def
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0 % initialization value for /sH_len
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0 1 255 {
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sHKs exch
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2 mul getu16
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1 index % get current max
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1 index % get current subHeaderKey
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lt {exch} if pop
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} for
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/sH_len exch def
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dup 6 256 sHK_sz mul add
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cmapf2_tblen 1 index sub getinterval
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/sH_gIA exch def
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/cmapf2_glyph_array 65535 array def
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/.cmapf2_putGID {
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/cmapf2_ch cmapf2_ch_hi 8 bitshift cmapf2_ch_lo add def
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firstCode cmapf2_ch_lo le
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cmapf2_ch_lo firstCode entryCount add lt
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and { % true: j is inside
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sH_offset idRangeOffset add % offset to gI
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cmapf2_ch_lo firstCode sub 2 mul % rel. pos. in range
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add 6 add % offset in sH_gIA
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sH_gIA exch getu16
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dup 0 gt { %
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idDelta add
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cmapf2_glyph_array exch cmapf2_ch exch put
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} {
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pop
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% cmapf2_glyph_array cmapf2_ch 0 put
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} ifelse
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} { % false: j is outside
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% cmapf2_glyph_array cmapf2_ch 0 put
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} ifelse
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} def
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16#00 1 16#ff { % hi_byte scan
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/cmapf2_ch_hi exch def
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sHKs cmapf2_ch_hi sHK_sz mul getu16
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/sH_offset exch def
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sH_gIA sH_offset sH_sz getinterval
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dup 0 getu16 /firstCode exch def
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dup 2 getu16 /entryCount exch def
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dup 4 gets16 /idDelta exch def
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dup 6 getu16 /idRangeOffset exch def
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pop
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sH_offset 0 eq {
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/cmapf2_ch_lo cmapf2_ch_hi def
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/cmapf2_ch_hi 0 def
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.cmapf2_putGID
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} {
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16#00 1 16#ff { % lo_byte scan
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/cmapf2_ch_lo exch def
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.cmapf2_putGID
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} for
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} ifelse
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} for
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pop
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0 1 cmapf2_glyph_array length 1 sub { % rewrite null -> 0.
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dup cmapf2_glyph_array exch get
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null eq { cmapf2_glyph_array exch 0 put } {pop} ifelse
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} for
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cmapf2_glyph_array
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} bind
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4 { % Microsoft/Adobe segmented mapping.
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/etab exch def
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/nseg2 etab 6 getu16 def
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14 /endc etab 2 index nseg2 getinterval def
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% The Apple TrueType documentation omits the 2-byte
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% 'reserved pad' that follows the endCount vector!
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2 add
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nseg2 add /startc etab 2 index nseg2 getinterval def
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nseg2 add /iddelta etab 2 index nseg2 getinterval def
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nseg2 add /idroff etab 2 index nseg2 getinterval def
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% The following hack allows us to properly handle
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% idiosyncratic fonts that start at 0xf000:
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pop
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/firstcode startc 0 getu16 16#ff00 and dup 16#f000 ne { pop 0 } if def
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/putglyph {
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glyphs code 3 -1 roll put /code code 1 add def
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} bind def
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% Do a first pass to compute the size of the glyphs array.
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/numcodes 0 def /glyphs 0 0 2 nseg2 3 sub {
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% Stack: /glyphs numglyphs i2
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/i2 exch def
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/scode startc i2 getu16 def
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/ecode endc i2 getu16 def
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numcodes scode firstcode sub
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% Hack for fonts that have only 0x0000 and 0xf000 ranges
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%dup 16#e000 ge { 255 and } if
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% the previous line is obstructive to CJK fonts, so it was removed
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exch sub 0 .max ecode scode sub 1 add add
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exch 1 index add exch
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numcodes add /numcodes exch def
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} for array def
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% prefill the array with 0's faster than a { 0 putglyph } repeat
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glyphs length 1024 ge {
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.array1024z 0 1024 glyphs length 1023 sub { glyphs exch 2 index putinterval } for
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glyphs dup length 1024 sub 3 -1 roll
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putinterval
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} {
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0 1 glyphs length 1 sub { glyphs exch 0 put } for
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} ifelse
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% Now fill in the array.
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/numcodes 0 def /code 0 def
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0 2 nseg2 3 sub {
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/i2 exch def
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/scode startc i2 getu16 def
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/ecode endc i2 getu16 def
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numcodes scode firstcode sub
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% Hack for fonts that have only 0x0000 and 0xf000 ranges
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%dup 16#e000 ge { 255 and } if
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% the previous line is obstructive to CJK fonts, so it was removed
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exch sub 0 .max dup /code exch code exch add def
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ecode scode sub 1 add add numcodes add /numcodes exch def
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/delta iddelta i2 gets16 def
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TTFDEBUG {
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(scode=) print scode =only
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( ecode=) print ecode =only
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( delta=) print delta =only
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( droff=) print idroff i2 getu16 =
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} if
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idroff i2 getu16 dup 0 eq {
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pop scode delta add 65535 and 1 ecode delta add 65535 and
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{ putglyph } for
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} { % The +2 is for the 'reserved pad'.
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/gloff exch 14 nseg2 3 mul add 2 add i2 add add def
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0 1 ecode scode sub {
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2 mul gloff add etab exch getu16
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dup 0 ne { delta add 65535 and } if putglyph
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} for
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} ifelse
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} for glyphs /glyphs null def % for GC
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} bind
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6 { % Single interval lookup.
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dup 6 getu16 /firstcode exch def dup 8 getu16 /ng exch def
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firstcode ng add array
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% Stack: tab array
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% Fill elements 0 .. firstcode-1 with 0
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0 1 firstcode 1 sub { 2 copy 0 put pop } for
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dup firstcode ng getinterval
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% Stack: tab array subarray
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% Fill elements firstcode .. firstcode+nvalue-1 with glyph values
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0 1 ng 1 sub {
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dup 2 mul 10 add 4 index exch getu16 3 copy put pop pop
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} for pop exch pop
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} bind
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.dicttomark readonly def % cmapformats
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% <cmaptab> cmaparray <glypharray>
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/cmaparray {
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dup 0 getu16 cmapformats exch .knownget {
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TTFDEBUG {
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(cmap: format ) print 1 index 0 getu16 = flush
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} if exec
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} {
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(Can't handle format ) print 0 getu16 = flush
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0 1 255 { } for 256 packedarray
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} ifelse
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TTFDEBUG {
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(cmap: length=) print dup length = dup ==
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} if
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} bind def
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/get_from_stringarray % <array|string> <offset> get_from_stringarray <int>
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{ 1 index type /stringtype eq {
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get
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} {
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exch { % o ()
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2 copy length gt {
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length sub
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} {
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exch get exit
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} ifelse
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} forall
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} ifelse
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} bind def
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/getinterval_from_stringarray % <array|string> <offset> <length> getinterval_from_stringarray <string>
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{ % May allocate a string in VM.
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2 index type /stringtype eq {
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getinterval
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} {
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string exch 0 % [] s o p
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4 3 roll { % s o p Si
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dup length % s o p Si lSi
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dup 4 index lt {
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3 index exch sub % s o p Si o'
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exch pop 3 1 roll exch pop % s o' p
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} { % s o p Si lSi
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dup 3 1 roll % s o p lSi Si lSi
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4 index sub % s o p lSi Si lSi-o
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5 index length 4 index sub % s o p lSi Si lSi-o ls-p
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2 copy gt { exch } if pop % s o p lSi Si minl
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dup 3 1 roll % s o p lSi minl Si minl
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5 index exch getinterval % s o p lSi minl from
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5 index 4 index 3 index % s o p lSi minl from s p minl
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getinterval % s o p lSi minl from to
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copy pop % s o p lSi minl
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3 1 roll % s o minl p lSi
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sub % s o minl p'
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3 1 roll add % s p' o'
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dup 3 index length ge {
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exch exit % s o p'
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} if
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exch % s o' p'
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} ifelse
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} forall
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pop pop % s
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} ifelse
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} bind def
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/string_array_size % <array|string> string_array_size <int>
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|
{ dup type /stringtype eq {
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|
length
|
|
} {
|
|
0 exch { length add } forall
|
|
} ifelse
|
|
} bind def
|
|
|
|
% Each procedure in this dictionary is called as follows:
|
|
% posttable <<proc>> glyphencoding
|
|
/postformats mark
|
|
16#00010000 { % 258 standard Macintosh glyphs.
|
|
pop MacGlyphEncoding
|
|
}
|
|
16#00020000 { % Detailed map, required by Microsoft fonts.
|
|
dup dup type /arraytype eq { 0 get } if length 36 lt {
|
|
TTFDEBUG { (post format 2.0 invalid.) = flush } if
|
|
pop [ ]
|
|
} {
|
|
/postglyphs exch def
|
|
/post_first postglyphs dup type /arraytype eq { 0 get } if def
|
|
post_first 32 getu16 /numglyphs exch def
|
|
/glyphnames numglyphs 2 mul 34 add def
|
|
% Build names array in the order they occur in the 'post' table
|
|
/postpos glyphnames def
|
|
/total_length postglyphs //string_array_size exec def
|
|
[ numglyphs 1 sub {
|
|
postpos total_length ge { exit } if
|
|
% No name available, /postnames will be defined as an empty
|
|
% array and the glyph won't get a name attached.
|
|
postglyphs postpos //get_from_stringarray exec
|
|
postglyphs postpos 1 add 2 index //getinterval_from_stringarray exec cvn
|
|
exch postpos add 1 add /postpos exch def
|
|
} repeat
|
|
] /postnames exch def
|
|
[ 0 1 numglyphs 1 sub {
|
|
2 mul 34 add post_first exch getu16
|
|
dup 258 lt {
|
|
MacGlyphEncoding exch get
|
|
} {
|
|
dup 32768 ge {
|
|
% According to the published TrueType spec, such values are
|
|
% "reserved for future use", but at least some PDF files
|
|
% produced by the Adobe PDF library contain entries with a
|
|
% value of 16#ffff.
|
|
pop /.notdef
|
|
} {
|
|
% Get the name for this glyph
|
|
258 sub dup postnames length ge {
|
|
TTFDEBUG { ( *** warning: glyph index past end of 'post' table) = flush } if
|
|
exit
|
|
} if
|
|
postnames exch get
|
|
% At least some of Microsoft's TrueType fonts use incorrect
|
|
% (Adobe-incompatible) names for some glyphs.
|
|
% Correct for this here.
|
|
postremap 1 index .knownget { exch pop } if
|
|
} ifelse
|
|
} ifelse
|
|
} for ]
|
|
}
|
|
ifelse
|
|
} bind
|
|
16#00030000 { % No map.
|
|
pop [ ]
|
|
} bind
|
|
.dicttomark readonly def % postformats
|
|
|
|
/call.readtable
|
|
{ .readtable
|
|
} bind def
|
|
/call.readbigtable
|
|
{ .readbigtable
|
|
} bind def
|
|
|
|
% Each procedure in this dictionary is called as follows:
|
|
% <file> <length> -proc- <string|array_of_strings>
|
|
% Note that each table must have an even length, because of a strange
|
|
% Adobe requirement that each sfnts entry have even length.
|
|
/readtables mark
|
|
% Ordinary tables
|
|
(cmap) //call.readtable
|
|
(head) 1 index
|
|
(hhea) 1 index
|
|
(maxp) 1 index
|
|
(name) 1 index
|
|
(OS/2) 1 index
|
|
(post) //call.readbigtable
|
|
(vhea) //call.readtable
|
|
% Big tables
|
|
(glyf) //call.readbigtable
|
|
(loca) 1 index
|
|
(hmtx) 1 index
|
|
(vmtx) 1 index
|
|
% Tables only needed for embedding in PDF files
|
|
(cvt ) //call.readtable
|
|
(fpgm) 1 index
|
|
(prep) 1 index
|
|
.dicttomark
|
|
% Normally there would be a 'readonly' here, but the ttf2pf utility wants
|
|
% to include the 'kern' table as well, so we leave the readtables dictionary
|
|
% writable.
|
|
def % readtables
|
|
|
|
/readtables_stripped readtables dup length dict copy
|
|
dup (loca) { .skiptable } put
|
|
dup (glyf) { .skiptable } put
|
|
def
|
|
|
|
% Read a table as a single string.
|
|
% <file> <length> .skiptable <string>
|
|
/.skiptable {
|
|
pop pop ()
|
|
} bind def
|
|
|
|
% Read a table as a single string.
|
|
% <file> <length> .readtable <string>
|
|
/.readtable {
|
|
dup dup 1 and add string
|
|
% Stack: f len str
|
|
dup 0 4 -1 roll getinterval
|
|
% Stack: f str str1
|
|
% Because of the absurd PostScript specification that gives an
|
|
% error for reading into an empty string, we have to check for
|
|
% this explicitly here.
|
|
3 -1 roll exch
|
|
dup () ne { readstring } if pop pop
|
|
} bind def
|
|
|
|
% Read a big table (one that may exceed 64K).
|
|
% <file> <length> .readbigtable <string[s]>
|
|
/.readbigtable {
|
|
dup 65400 lt {
|
|
.readtable
|
|
} {
|
|
currentuserparams /VMReclaim get -2 vmreclaim
|
|
[ 4 2 roll {
|
|
% Stack: mark ... f left
|
|
dup maxstring le { exit } if
|
|
1 index maxstring string readstring pop 3 1 roll maxstring sub
|
|
} loop .readtable ]
|
|
exch vmreclaim
|
|
} ifelse
|
|
} bind def
|
|
|
|
end readonly def % .loadttfontdict
|
|
|
|
% <tab> .printtab -
|
|
/.printtab {
|
|
dup 0 4 getinterval print ( ) print
|
|
dup 8 getu32 =only ( ) print
|
|
12 getu32 =
|
|
} bind def
|
|
|
|
% <file> <bool> <SubfontID> .loadttfonttables -
|
|
% Pushes .loadttfontdict & scratch dict on d-stack.
|
|
% Defines f, offsets, tables, tabdict, tabs.
|
|
% Skips loca and glyf if <bool> is true.
|
|
/.loadttfonttables {
|
|
.loadttfontdict begin
|
|
40 dict begin
|
|
/SubfontID exch def
|
|
/load_stripped exch def
|
|
/f exch def
|
|
/offsets f 12 string readstring pop def
|
|
load_stripped { readtables_stripped } { readtables } ifelse /readtables_ exch def
|
|
offsets 0 4 getinterval (ttcf) eq {
|
|
% We need to handle TT collections with disk fonts only.
|
|
% Therefore the file is a disk file and it can be positioned.
|
|
offsets 8 getu32 /num_fonts exch def
|
|
SubfontID num_fonts ge {
|
|
QUIET not { (True Type collection contains insufficient fonts.) = } if
|
|
/.loadttfonttables cvx /invalidfont signalerror
|
|
} if
|
|
SubfontID 4 mul 12 add f exch setfileposition
|
|
f 4 string readstring pop 0
|
|
getu32 /ttc_offset exch def
|
|
f ttc_offset setfileposition
|
|
/offsets f 12 string readstring pop def
|
|
} {
|
|
SubfontID 0 gt {
|
|
QUIET not { (SubfontID > 0 with a True Type file which is not a collection.) = } if
|
|
/.loadttfonttables cvx /invalidfont signalerror
|
|
} if
|
|
/ttc_offset 0 def
|
|
} ifelse
|
|
/tables f offsets 4 getu16 16 mul string readstring pop def
|
|
/tabdict tables length 16 idiv dict def
|
|
% tabs = tables we want to keep, sorted by file position.
|
|
/tabs [ 0 16 tables length 1 sub {
|
|
tables exch 16 getinterval
|
|
TTFDEBUG { dup .printtab } if
|
|
dup 0 4 getinterval readtables_ 1 index known {
|
|
% put all 0 length tables at 0 to avoid overlap
|
|
1 index 12 getu32 0 eq { 1 index 8 0 putu32 } if
|
|
tabdict exch 2 index put
|
|
} {
|
|
pop pop
|
|
} ifelse
|
|
} for ] {
|
|
exch 8 getu32 exch 8 getu32 lt
|
|
} .sort def
|
|
% In certain malformed TrueType fonts, tables overlap.
|
|
% Truncate tables if necessary.
|
|
0 1 tabs length 2 sub {
|
|
dup tabs exch get exch 1 add tabs exch get
|
|
1 index 8 getu32 2 index 12 getu32 add
|
|
1 index 8 getu32 gt {
|
|
(**** Warning: ) print 1 index 0 4 getinterval print
|
|
( overlaps ) print dup 0 4 getinterval print
|
|
(, truncating.) = flush
|
|
dup 8 getu32 2 index 8 getu32 sub
|
|
2 index 12 3 -1 roll putu32
|
|
} if pop pop
|
|
} for
|
|
} bind def
|
|
|
|
/.file_table_pos_names
|
|
mark
|
|
/glyf 0
|
|
/loca 0
|
|
.dicttomark readonly def
|
|
|
|
% - .readttdata -
|
|
% Read data. Updates offsets, tabs; stores data in tabdict.
|
|
/.readttdata {
|
|
/file_table_pos 10 dict def
|
|
/fpos offsets length tables length add ttc_offset add def
|
|
/sfpos offsets length tabs length 16 mul add def
|
|
offsets 4 tabs length putu16
|
|
tabs {
|
|
dup 0 4 getinterval /tname exch def
|
|
dup 8 getu32 /tpos exch def
|
|
dup 12 getu32 /tlen exch def
|
|
load_stripped //.file_table_pos_names tname known and {
|
|
pop
|
|
file_table_pos tname [tpos tlen] put
|
|
tabdict tname () put
|
|
} {
|
|
8 sfpos putu32
|
|
% Skip data between the end of the previous table and
|
|
% the beginning of this one, if any.
|
|
tpos fpos gt {
|
|
load_stripped {
|
|
% 'setfileposition' is faster for skipping a big data.
|
|
f tpos setfileposition
|
|
} {
|
|
f tpos fpos sub () /SubFileDecode filter dup flushfile closefile
|
|
/fpos tpos def
|
|
} ifelse
|
|
} if
|
|
f tlen readtables_ tname get exec
|
|
tabdict tname 3 -1 roll put
|
|
% Round up the table length to an even value.
|
|
/sfpos sfpos tlen dup 1 and add add def
|
|
} ifelse
|
|
/fpos fpos tlen add def
|
|
} forall
|
|
} bind def
|
|
|
|
% Find the string in a list of strings that includes a given index.
|
|
% <strings> <index> .findseg <string> <index'>
|
|
/.findseg {
|
|
exch {
|
|
dup length 2 index gt { exch exit } if
|
|
length sub
|
|
} forall
|
|
} bind def
|
|
|
|
% - .makesfnts -
|
|
% Defines checksum, getloca, head, locatable, numloca, post, sfnts, upem
|
|
% Note that the 'loca' table may be out of order. This is handled when
|
|
% needed in .dividesfnts
|
|
/.makesfnts {
|
|
.readttdata
|
|
/head tabdict /head get def
|
|
/post tabdict /post .knownget {
|
|
dup 0 get /post_first_part exch def
|
|
} {
|
|
null
|
|
} ifelse def
|
|
load_stripped not {
|
|
/locatable tabdict /loca get def
|
|
/numloca
|
|
locatable dup type /stringtype eq
|
|
{ length }
|
|
{ 0 exch { length add } forall }
|
|
ifelse % no def yet
|
|
locatable type /stringtype eq {
|
|
/.indexloca {} def
|
|
} {
|
|
/.indexloca /.findseg load def
|
|
} ifelse
|
|
head 50 getu16 0 ne {
|
|
/getloca {
|
|
2 bitshift locatable exch .indexloca getu32
|
|
} def
|
|
4 idiv 1 sub
|
|
} {
|
|
/getloca {
|
|
dup add locatable exch .indexloca getu16 dup add
|
|
} def
|
|
2 idiv 1 sub
|
|
} ifelse def % numloca
|
|
% If necessary, re-partition the glyfs.
|
|
tabdict /glyf get dup type /stringtype ne {
|
|
.dividesfnts tabdict /glyf 3 -1 roll put
|
|
} {
|
|
pop
|
|
} ifelse
|
|
} {
|
|
% We did not load loca, take the number of glyphs from maxp.
|
|
/numloca tabdict /maxp get 4 getu16 def
|
|
} ifelse
|
|
/sfnts [
|
|
offsets tabs { concatstrings } forall
|
|
tabs {
|
|
0 4 getinterval tabdict exch get
|
|
dup type /stringtype ne { aload pop } if
|
|
} forall
|
|
] def
|
|
} bind def
|
|
|
|
% <glyfs> .dividesfnts <glyfs'>
|
|
/.dividesfnts {
|
|
/glyfs exch def
|
|
/len1 0 glyfs { length add } forall def
|
|
% Determine where to split the glyfs by scanning the sorted locatable
|
|
% The very last entry in loca may be bogus.
|
|
% Note that some loca entries may be odd, but we can only
|
|
% split at even positions.
|
|
%
|
|
% Construct splitarray, the array of final lengths of
|
|
% the sfnts entries covering the glyfs (i.e., all but
|
|
% the first and last sfnts entries).
|
|
/prevsplit 0 def
|
|
/prevboundary 0 def
|
|
% sort the locatable in case it is out of order
|
|
% Note the 'loca' table remains unchanged
|
|
/needsort false def
|
|
numloca array % the array of 'loca' entries (may be out of order)
|
|
-1 % initial values for in order check
|
|
0 1 numloca 1 sub {
|
|
dup getloca dup
|
|
4 -1 roll lt { /needsort true def } if
|
|
3 copy put exch pop
|
|
} for pop % discard inorder check value
|
|
needsort {
|
|
{ lt } bind .sort % stack: locatable_array
|
|
} if
|
|
/splitarray [
|
|
3 -1 roll 0 1 numloca 1 sub {
|
|
% stack: /splitarray -mark- { splitlen splitlen ... } locatable_array index
|
|
1 index exch get dup prevsplit maxstring add gt {
|
|
prevboundary prevsplit sub exch
|
|
/prevsplit prevboundary def
|
|
} if
|
|
dup 1 and 0 eq { /prevboundary exch def } { pop } ifelse
|
|
dup type /arraytype ne { exch } if % keep locatable_array on top
|
|
} for
|
|
len1 prevsplit sub
|
|
exch pop % discard locatable_array
|
|
] def
|
|
currentuserparams /VMReclaim get -2 vmreclaim
|
|
[
|
|
% Re-split the sfnts glyfs strings according to splitarray.
|
|
% We do this by iterating over the final segments defined
|
|
% by splitarray, and constructing them from pieces of the
|
|
% current glyfs strings. We recycle the current strings
|
|
% when possible, to avoid stressing the allocator.
|
|
/sfnt_idx 0 def
|
|
/strpos 0 def
|
|
/avail () def
|
|
splitarray {
|
|
/seglen exch def
|
|
/segpos 0 def
|
|
avail length seglen ge
|
|
{ avail 0 seglen getinterval /avail () def } { seglen string }
|
|
ifelse
|
|
{
|
|
/str glyfs sfnt_idx get def
|
|
/strlen str length def
|
|
/strleft strlen strpos sub def
|
|
seglen segpos sub strleft lt { exit } if
|
|
% Copy the (rest of the) string into the new segment.
|
|
% We know strleft <= segleft.
|
|
dup segpos str strpos strleft getinterval putinterval
|
|
/segpos segpos strleft add def
|
|
/avail str def
|
|
/sfnt_idx sfnt_idx 1 add def
|
|
/strpos 0 def
|
|
segpos seglen eq { exit } if
|
|
} loop
|
|
% Fill up the segment with an initial piece of the next
|
|
% existing glyfs string. We know strleft > segleft.
|
|
/segleft seglen segpos sub def
|
|
dup segpos str strpos segleft getinterval putinterval
|
|
/strpos strpos segleft add def
|
|
} forall
|
|
]
|
|
exch vmreclaim
|
|
} bind def
|
|
|
|
/first_post_string % - first_post_string <string>
|
|
{
|
|
post dup type /arraytype eq { 0 get } if
|
|
} bind def
|
|
|
|
% - .getpost -
|
|
% Uses post, defines glyphencoding
|
|
/.getpost {
|
|
/glyphencoding post null eq {
|
|
TTFDEBUG { (post missing) = flush } if [ ]
|
|
} {
|
|
postformats first_post_string 0 getu32 .knownget {
|
|
TTFDEBUG {
|
|
(post: format ) print
|
|
first_post_string
|
|
dup 0 getu16 =only (,) print 2 getu16 = flush
|
|
} if
|
|
post exch exec
|
|
} {
|
|
TTFDEBUG { (post: unknown format ) print post 0 getu32 = flush } if [ ]
|
|
} ifelse
|
|
} ifelse
|
|
TTFDEBUG { (post=) print dup == } if
|
|
def
|
|
} bind def
|
|
|
|
% - .ttkeys <key> <value> ...
|
|
/.ttkeys {
|
|
count /ttkeycount exch def
|
|
/upem head 18 getu16 def
|
|
/FontMatrix matrix
|
|
/FontBBox [ 36 2 42 { head exch gets16 upem div } for ]
|
|
nextxuid
|
|
tabdict /name .knownget {
|
|
% Find the names from the 'name' table.
|
|
/names exch def
|
|
/FontName names 6 findname not { curxuid 16 8 string cvrs } if
|
|
/fontname 1 index def
|
|
/FontInfo mark
|
|
names 0 findname { /Notice exch } if
|
|
names 1 findname { /FamilyName exch } if
|
|
names 4 findname { /FullName exch } if
|
|
names 5 findname { /Version exch } if
|
|
} {
|
|
% No name table, fabricate a FontName.
|
|
/FontName curxuid 16 8 string cvrs
|
|
/fontname 1 index def
|
|
/FontInfo mark
|
|
} ifelse
|
|
% Stack: ... /FontInfo mark key1 value1 ...
|
|
post null ne {
|
|
/ItalicAngle first_post_string 4 gets32 65536.0 div
|
|
/isFixedPitch first_post_string 12 getu32 0 ne
|
|
/UnderlinePosition first_post_string 8 gets16 upem div
|
|
/UnderlineThickness first_post_string 10 gets16 upem div
|
|
} if
|
|
counttomark 0 ne { .dicttomark } { pop pop } ifelse
|
|
/XUID [orgXUID 42 curxuid]
|
|
TTFDEBUG {
|
|
tabs { .printtab } forall
|
|
[ sfnts { length } forall ] ==
|
|
count ttkeycount sub array astore dup { == } forall aload pop
|
|
} if
|
|
/sfnts sfnts
|
|
} bind def
|
|
|
|
% ---------------- Standard TrueType font loading ---------------- %
|
|
|
|
% - .pickcmap_with_no_xlatmap -
|
|
% Defines cmapsub, cmaptab
|
|
/.pickcmap_with_no_xlatmap {
|
|
tabdict /cmap get
|
|
% The Apple cmap format is no help in determining the encoding.
|
|
% Look for a Microsoft table. If we can't find one,
|
|
% just use the first table, whatever it is.
|
|
dup 4 8 getinterval exch % the default
|
|
0 1 2 index 2 getu16 1 sub {
|
|
8 mul 4 add 1 index exch 8 getinterval
|
|
TTFDEBUG {
|
|
(cmap: platform ) print dup 0 getu16 =only
|
|
( encoding ) print dup 2 getu16 = flush
|
|
} if
|
|
dup 0 getu16 3 eq { exch 3 -1 roll pop exit } if pop
|
|
} for
|
|
% Stack: subentry table
|
|
/cmapsub 2 index def
|
|
exch 4 getu32 1 index length 1 index sub getinterval
|
|
/cmaptab exch def
|
|
} bind def
|
|
|
|
% - .pickcmap_with_xlatmap -
|
|
% Defines cmapsub, cmaptab
|
|
/.pickcmap_with_xlatmap {
|
|
.xlatmap_dict /TrueType known not {
|
|
(Emulating a CID font with a True Type file, ) print
|
|
(the file gs/lib/xlatmap must contain /TrueType key.) =
|
|
/.pickcmap_with_xlatmap cvx /configurationerror signalerror
|
|
} if
|
|
false
|
|
.xlatmap_dict /TrueType get
|
|
dup length 2 sub 0 exch 2 exch { % bool [] i
|
|
2 copy get % bool [] i ()
|
|
(.) search { % bool [] i post match pre
|
|
cvi exch pop exch cvi % bool [] i PlatID SpecID
|
|
} {
|
|
(gs/lib/xlatmap containg a record with an invalid (PlatformID.SpecificID)) =
|
|
/.pickcmap_with_xlatmap cvx /configurationerror signalerror
|
|
} ifelse
|
|
TTFDEBUG {
|
|
(Seeking a cmap for platform=) print 1 index =only ( encoding=) print dup =
|
|
} if
|
|
tabdict /cmap get % bool [] i PlatID SpecID (cmap)
|
|
dup /cmaptab exch def % temporary
|
|
0 1 2 index 2 getu16 1 sub { % bool [] i PlatID SpecID (cmap) j
|
|
8 mul 4 add 1 index exch 8 getinterval % bool [] i PlatID SpecID (cmap) (cmapsub)
|
|
TTFDEBUG {
|
|
(cmap: platform ) print dup 0 getu16 =only
|
|
( encoding ) print dup 2 getu16 = flush
|
|
} if
|
|
dup 0 getu16 4 index eq {
|
|
dup 2 getu16 3 index eq { % bool [] i PlatID SpecID (cmap) (cmapsub)
|
|
TTFDEBUG {
|
|
(Choosen a cmap for platform=) print 3 index =only
|
|
( encoding=) print 2 index =
|
|
} if
|
|
/cmapsub 1 index def
|
|
dup 4 getu32 % bool [] i PlatID SpecID (cmap) (cmapsub) p
|
|
cmaptab length 1 index sub % bool [] i PlatID SpecID (cmap) (cmapsub) p l
|
|
cmaptab 3 1 roll getinterval
|
|
/cmaptab exch def % bool [] i PlatID SpecID (cmap) (cmapsub)
|
|
5 index 5 index 1 add get % bool [] i PlatID SpecID (cmap) (cmapsub) /Decoding
|
|
/Decoding exch def % bool [] i PlatID SpecID (cmap) (cmapsub)
|
|
7 -1 roll pop true 7 1 roll % true [] i PlatID SpecID (cmap) (cmapsub)
|
|
} if
|
|
} if
|
|
pop % true [] i PlatID SpecID (cmap)
|
|
5 index { exit } if
|
|
} for % bool [] i PlatID SpecID (cmap)
|
|
pop pop pop pop % bool []
|
|
1 index { exit } if
|
|
} for % bool []
|
|
pop % bool
|
|
not {
|
|
QUIET not { (True Type font doesn't contain a charset listed in gs/lib/xlatmap.) = } if
|
|
/.pickcmap_with_xlatmap cvx /invalidfont signalerror
|
|
} if %
|
|
} bind def
|
|
|
|
% - .pickcmap -
|
|
% Defines cmapsub, cmaptab
|
|
/.pickcmap {
|
|
% Currently we use xlatmap only for emulation CIDFontType 2 with
|
|
% a disk True Type font files, and use load_stripped
|
|
% to check this regime. We would like to do so
|
|
% while emulating a Type 42, but first the old code
|
|
% about handling them to be changed
|
|
% with adding a handling of a Decoding.
|
|
% fixme : A correct way to fix this is to implenent
|
|
% the Type 42 emulation with gs_fntem.ps .
|
|
% Also note that PDF embedded fonts probably don't need a xlatmap -
|
|
% see PDF spec, "Encodings for True Type fonts".
|
|
load_stripped {
|
|
//.pickcmap_with_xlatmap exec
|
|
} {
|
|
//.pickcmap_with_no_xlatmap exec
|
|
} ifelse
|
|
} bind def
|
|
|
|
% <glyph> .nname <_name>
|
|
/.nname {
|
|
=string cvs (_) exch concatstrings cvn
|
|
} bind def
|
|
|
|
% - .charkeys /CharStrings <charstrings> /Encoding <encoding>
|
|
% Resets glyphencoding
|
|
/.charkeys {
|
|
TTFDEBUG {
|
|
(glyphencoding: length=) print glyphencoding dup length = === flush
|
|
} if
|
|
% Hack: if there is no usable post table but the cmap uses
|
|
% the Microsoft Unicode encoding, use ISOLatin1Encoding.
|
|
glyphencoding length 0 eq {
|
|
cmapsub 0 4 getinterval <00030001> eq {
|
|
PDFDEBUG { (No post but have cmap 3.1, so use ISOLatin1Encoding) } if
|
|
/glyphencoding ISOLatin1Encoding dup length array copy def
|
|
} {
|
|
PDFDEBUG { (No encoding info, use .GS_extended_SymbolEncoding) } if
|
|
/glyphencoding /.GS_extended_SymbolEncoding findencoding dup length array copy def
|
|
} ifelse
|
|
} if
|
|
% If necessary, fabricate additional glyphencoding entries
|
|
% to cover all of loca, or truncate glyphencoding.
|
|
glyphencoding length numloca lt {
|
|
/glyphencoding numloca array
|
|
glyphencoding length dup 1 sub 0 1 3 2 roll {
|
|
dup glyphencoding exch get
|
|
3 index 3 1 roll put
|
|
} for
|
|
% /glyphencoding <newarray> <glyphencoding length>
|
|
1 numloca 1 sub {
|
|
1 index exch dup .nname put
|
|
} for
|
|
def
|
|
} {
|
|
/glyphencoding glyphencoding 0 numloca getinterval def
|
|
} ifelse
|
|
% Some badly designed Chinese fonts have a post table
|
|
% in which all glyphs other than 0 are named .null.
|
|
% Use CharStrings to keep track of the reverse map from
|
|
% names to glyphs, and don't let any name be used for
|
|
% more than one glyph.
|
|
/CharStrings glyphencoding dup length 1 add dict % +1 for .notdef
|
|
0 1 3 index length 1 sub {
|
|
% Stack: glyphencoding dict index
|
|
2 index 1 index get 2 index 1 index known {
|
|
% The same name maps to more than one glyph.
|
|
% Change the name.
|
|
pop dup .nname 3 index 2 index 2 index put
|
|
} if
|
|
2 index exch 3 -1 roll put
|
|
} for exch pop
|
|
% If there is no .notdef entry, map it to glyph 0.
|
|
dup /.notdef known not { dup /.notdef 0 put } if
|
|
readonly
|
|
/Encoding
|
|
[ cmaptab cmaparray dup length 256 gt { 0 256 getinterval } if
|
|
{ glyphencoding exch get } forall
|
|
counttomark 256 exch sub { /.notdef } repeat ]
|
|
TTFDEBUG { (Encoding: ) print dup === flush } if
|
|
} bind def
|
|
|
|
% -mark- <key> <value> ... .definettfont <font>
|
|
/.definettfont {
|
|
/FontType 42
|
|
/PaintType 0
|
|
TTFDEBUG {
|
|
(numloca=) print numloca =
|
|
} if
|
|
.dicttomark
|
|
end end dup /FontName get exch definefont
|
|
} bind def
|
|
|
|
% <file> .loadttfont <type42font>
|
|
/.loadttfont {
|
|
//false 0 .loadttfonttables
|
|
.makesfnts
|
|
.getpost
|
|
.pickcmap
|
|
mark
|
|
.charkeys
|
|
.ttkeys
|
|
.definettfont
|
|
} bind def
|
|
|
|
% ---------------- CIDFontType 2 font loading ---------------- %
|
|
|
|
% Fill a string with sequential CIDs starting from the initial value.
|
|
% <string> <value> .fill_identity_cmap <string>
|
|
/.fill_identity_cmap { % () v
|
|
1 index length 2 sub % () v n-2
|
|
0 2 3 2 roll { % () v 0 2 n-1
|
|
3 copy exch % () v i () i v
|
|
-8 bitshift % () v i () i v>>8
|
|
put % () v i
|
|
3 copy 1 add % () v i () v i+1
|
|
exch 255 and % () v i () i+1 v&255
|
|
put % () v i
|
|
pop 1 add % () v+1
|
|
} for
|
|
pop
|
|
} bind def
|
|
|
|
% -mark- <key> <value> ... .definettcidfont <font>
|
|
/.definettcidfont {
|
|
/CIDFontName fontname
|
|
/CIDFontType 2
|
|
/CIDSystemInfo mark
|
|
/Registry (Adobe)
|
|
/Ordering (Japan1) % adhoc
|
|
/Supplement 0
|
|
.dicttomark
|
|
/CharStrings mark /.notdef 0 .dicttomark
|
|
% The cmap isn't of any use even if it is present.
|
|
% Just construct an identity CIDMap covering all the glyphs.
|
|
|
|
/CIDCount numloca % Wrong if a CIDFontType2 embedded into PDF with a non-Identity CIDToGIDMap.
|
|
% processCIDToGIDMap may replace.
|
|
/CIDMap numloca maxstring le {
|
|
% Use a single string.
|
|
numloca 2 mul string 0 .fill_identity_cmap
|
|
} {
|
|
% We must use 2 strings.
|
|
maxstring 2 mul string 0 .fill_identity_cmap
|
|
numloca maxstring sub 2 mul string maxstring .fill_identity_cmap
|
|
2 array astore
|
|
} ifelse
|
|
|
|
/GDBytes 2
|
|
.dicttomark
|
|
end end dup /CIDFontName get exch /CIDFont defineresource
|
|
} bind def
|
|
|
|
% <file> .loadttcidfont <cidtype2font>
|
|
/.loadttcidfont {
|
|
//false 0 .loadttfonttables
|
|
.makesfnts
|
|
% CIDFontType2 fonts don't have a cmap: they are indexed by CID.
|
|
mark
|
|
.ttkeys
|
|
.definettcidfont
|
|
} bind def
|
|
|
|
% <file> <SubfontID> .load_tt_font_stripped <font_data>
|
|
% The font_data includes sfnts, NumGlyphs, TT_cmap, file_table_pos, Decoding.
|
|
% CIDMap to be created later from TT_cmap.
|
|
/.load_tt_font_stripped {
|
|
//true exch .loadttfonttables
|
|
.makesfnts
|
|
.pickcmap
|
|
mark
|
|
.ttkeys
|
|
/NumGlyphs numloca
|
|
/TT_cmap cmaptab cmaparray
|
|
/file_table_pos file_table_pos
|
|
/Decoding Decoding
|
|
.dicttomark
|
|
end end
|
|
} bind def
|
|
|
|
% ---------------- PDF TrueType font loading ---------------- %
|
|
|
|
% Strictly speaking, this code should be loaded only if we have a PDF
|
|
% interpreter, but it's so closely tied to the rest of the code in this
|
|
% file that we always include it.
|
|
|
|
% <plat+enc> .findcmap <subtable> true
|
|
% <plat+enc> .findcmap false
|
|
/.findcmap {
|
|
false exch tabdict /cmap get
|
|
% Some fonts have multiple cmaps with the same platform and
|
|
% encoding. Use the first one we find.
|
|
0 1 2 index 2 getu16 1 sub {
|
|
% Stack: false plat+enc cmap index
|
|
8 mul 4 add 1 index exch 8 getinterval
|
|
dup 0 4 getinterval 3 index eq {
|
|
4 getu32 1 index exch 1 index length 1 index sub getinterval
|
|
4 -1 roll not 4 2 roll exit
|
|
} if pop
|
|
} for
|
|
% Stack: false plat+enc cmap || subtable true plat+enc cmap
|
|
pop pop
|
|
} bind def
|
|
|
|
% Build .symbol_list for .pdfcharkeys .
|
|
% It is a dictionary containing all SymbolEncoding glyph names
|
|
% and random names for filling gaps in the character code range.
|
|
/.symbol_list 256 dict def
|
|
{
|
|
=string 0 (x) 0 get put
|
|
/SymbolEncoding .findencoding
|
|
0 1 255 {
|
|
dup 2 index exch get
|
|
dup /.notdef eq {
|
|
pop dup
|
|
=string 1 3 getinterval cvs length 1 add
|
|
=string exch 0 exch getinterval cvn
|
|
} if
|
|
exch //.symbol_list 3 1 roll put
|
|
} for
|
|
pop
|
|
} bind exec
|
|
|
|
% Create .GS_extended_SymbolEncoding as inverse of .symbol_list .
|
|
{
|
|
/.GS_extended_SymbolEncoding 256 array
|
|
//.symbol_list {
|
|
exch 2 index 3 1 roll put
|
|
} forall
|
|
.defineencoding
|
|
} bind exec
|
|
|
|
/.addglyph % <name> <glyph#> .addglyph <name> <glyph#>
|
|
% <name> <glyph#> .addglyph -
|
|
{
|
|
dup cmapencoding length lt {
|
|
cmapencoding exch get dup 0 eq {
|
|
pop pop
|
|
} if
|
|
} {
|
|
pop pop
|
|
} ifelse
|
|
} bind def
|
|
|
|
% <subcmap> <chartoglyphmap> .pdfmapchars
|
|
% /CharStrings <charstrings>
|
|
/.pdfmapchars {
|
|
exch cmaparray /cmapencoding exch def
|
|
/CharStrings mark
|
|
|
|
% Add glyphs of <chartoglyphmap>*<subcmap> :
|
|
3 2 roll {
|
|
dup type /arraytype eq {
|
|
exch /.name exch def
|
|
{ .name exch //.addglyph exec
|
|
} forall
|
|
currentdict /.name undef
|
|
} {
|
|
//.addglyph exec
|
|
} ifelse
|
|
} forall
|
|
|
|
% stack: /CharStrings mark /name1 glyph#1 /name2 glyph#2 ... /namen glyph#n
|
|
% Stack depth is restricted with AdobeGlyphList size.
|
|
|
|
% Add glyphs of 'post' (with lower priority, see .dicttomark) :
|
|
0 1 glyphencoding length 1 sub {
|
|
dup glyphencoding exch get exch
|
|
dup 0 eq {
|
|
pop pop
|
|
} if
|
|
} for
|
|
|
|
/.notdef 0
|
|
.dicttomark
|
|
} bind def
|
|
|
|
% - .pdfcharkeys /CharStrings <charstrings> /Encoding <encoding>
|
|
/.pdfcharkeys {
|
|
% The following algorithms are per the PDF Reference, Second Edition
|
|
% (PDF 1.3 reference manual).
|
|
|
|
is_symbolic {
|
|
<00030001> .findcmap {
|
|
%
|
|
% Adobe PDF spec says that symbolic fonts should contain exactly one
|
|
% cmap subtable for Platform=1, Encoding=0.
|
|
% Perhaps "Adobe Acrobat PDFWriter 4.0 for Windows" sometimes embeds
|
|
% fonts with both subtables 3.1 and 1.0 (see comparefiles/159.pdf,
|
|
% the font "Arial,Bold" with the character "registered"),
|
|
% and both Acrobat Reader 4.0 and 5.0 choose 3.1.
|
|
% Therefore we try 3.1 first.
|
|
%
|
|
( **** Warning: Embedded symbolic TT fonts should not contain a cmap for Platform=3 Encoding=1.\n)
|
|
pdfformaterror
|
|
TTFDEBUG { (Using cmap 3.1) = } if
|
|
AdobeGlyphList .pdfmapchars
|
|
/Encoding /WinAnsiEncoding .findencoding
|
|
} {
|
|
%
|
|
% Adobe PDF spec says that in this case PDF interpreter should
|
|
% map character codes directly to glyphs using
|
|
% the cmap <00010000>. But we use PS interpreter to emulate
|
|
% a PDF interpreter. Therefore we need to construct
|
|
% a type 42 font, which requires an Encoding and a Charstrings.
|
|
% We construct them with symbol_list, which
|
|
% includes all glyphs from SymbolEncoding and additional
|
|
% random names for 1-to-1 mapping.
|
|
%
|
|
% A real TT font may use a different characters than
|
|
% the Symbol charaster set. Perhaps our code
|
|
% will give a correct printing, because glyph names are not
|
|
% important for symbolic fonts in PDF.
|
|
%
|
|
<00010000> .findcmap {
|
|
prebuilt_encoding null ne {
|
|
TTFDEBUG { (Using cmap 1.0 with prebuilt_encoding.) = } if
|
|
prebuilt_encoding .invert_encoding .pdfmapchars
|
|
/Encoding prebuilt_encoding
|
|
} {
|
|
% This is a case, in which an obsolete software could stupidly specify Macintosh Roman
|
|
% for a random encoding. Particulatrly GPL Ghostscript 7.06 does so.
|
|
% Trying to recover with 'post'.
|
|
pop % The table itself doesn't contain useful data.
|
|
TTFDEBUG { (Using cmap 1.0 with post or .GS_extended_SymbolEncoding) = } if
|
|
.charkeys
|
|
} ifelse
|
|
} {
|
|
% This is illegal with PDF spec.
|
|
( **** Warning: Embedded symbolic TT fonts must contain a cmap for Platform=1 Encoding=0.\n)
|
|
pdfformaterror
|
|
% Try to map Unicode to SymbolEncoding
|
|
<00030001> .findcmap {
|
|
TTFDEBUG { (Using cmap 3.1) = } if
|
|
AdobeGlyphList .pdfmapchars
|
|
/Encoding /SymbolEncoding .findencoding
|
|
} {
|
|
% Apply the default algorithm. Hopely it has 'post'.
|
|
.charkeys
|
|
% check if the CharStrings dict contains glyphs needed by the
|
|
% prebuilt_encoding otherwise try the 3,0 cmap.
|
|
prebuilt_encoding null ne {
|
|
false prebuilt_encoding { % false means no missing glyphs
|
|
4 index exch known not { pop true exit } if
|
|
} forall
|
|
{
|
|
( **** Warning: Encoding derived from 'post' is incomplete.\n)
|
|
pdfformaterror
|
|
% Try another cmap format 3,0 -- Adobe doesn't mention it, but does
|
|
% use it apparently (empirically determined).
|
|
<00030000> .findcmap {
|
|
TTFDEBUG { (Adding cmap 3.0) = } if
|
|
5 1 roll pop pop pop pop
|
|
prebuilt_encoding null ne {
|
|
prebuilt_encoding .invert_encoding .pdfmapchars
|
|
/Encoding prebuilt_encoding
|
|
} {
|
|
AdobeGlyphList .pdfmapchars
|
|
/Encoding /SymbolEncoding .findencoding
|
|
} ifelse
|
|
} if
|
|
}if
|
|
} if
|
|
} ifelse
|
|
} ifelse
|
|
} ifelse
|
|
} {
|
|
<00030001> .findcmap {
|
|
TTFDEBUG { (Using cmap 3.1 for non-symbolic.) = } if
|
|
AdobeGlyphList .pdfmapchars
|
|
/Encoding /WinAnsiEncoding .findencoding
|
|
% WinAnsiEncoding is just a stub here.
|
|
% It will be replaced with one from font resource,
|
|
% because PDF spec requires it.
|
|
} {
|
|
<00010000> .findcmap {
|
|
TTFDEBUG { (Using cmap 1.0 for non-symbolic.) = } if
|
|
.romanmacdict .pdfmapchars
|
|
/Encoding /MacRomanEncoding .findencoding
|
|
} {
|
|
% Apply the default algorithm for using the 'post'.
|
|
.charkeys
|
|
} ifelse
|
|
} ifelse
|
|
} ifelse
|
|
} bind def
|
|
|
|
% <file> <is_symbolic> <Encoding|null> .loadpdfttfont <type42font>
|
|
/.loadpdfttfont {
|
|
/prebuilt_encoding exch def % for .pdfcharkeys
|
|
/is_symbolic exch def
|
|
//false 0 .loadttfonttables
|
|
.makesfnts
|
|
.getpost
|
|
.pickcmap
|
|
mark
|
|
.pdfcharkeys
|
|
.ttkeys
|
|
.definettfont
|
|
} bind def
|