ref: 9861f1a92b373a16939fd6f3c167e5dad9f253d3
dir: /sys/src/cmd/gs/lib/gs_fonts.ps/
% Copyright (C) 1990-2003 artofcode LLC. 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_fonts.ps,v 1.48 2004/11/24 20:09:01 ghostgum Exp $
% Font initialization and management code.
% Define the default font.
/defaultfontname /Courier def
% Define the name of the font map file.
% Note that the "%%Replace " comment below provides the font map file name
% for compiling initialization files into executable. Most likely it should be
% consistent with the one specified here.
/defaultfontmap (Fontmap) def
/defaultfontmap_content 50 dict
1 dict begin
/; { 2 index 3 1 roll .growput } bind def
%% Replace 0 (Fontmap)
end def
% ------ End of editable parameters ------ %
% Define the UniqueIDs and organization XUID assigned to Aladdin.
% UniqueIDs 5,066,501 - 5,066,580 are assigned as follows:
% 01 and 02 for shareware Cyrillic
% 33 through 67 for Type 1 versions of the Hershey fonts
% UniqueIDs 5,115,501 - 5,115,600 are currently unassigned.
/AladdinEnterprisesXUID 107 def
% If SUBSTFONT is defined, make it the default font.
/SUBSTFONT where { pop /defaultfontname /SUBSTFONT load def } if
% Define a reliable way of accessing FontDirectory in systemdict.
/.FontDirectory
{ /FontDirectory .systemvar
} .bind odef
% If DISKFONTS is true, we load individual CharStrings as they are needed.
% (This is intended primarily for machines with very small memories.)
% In this case, we define another dictionary, parallel to FontDirectory,
% that retains an open file for every font loaded.
/FontFileDirectory 10 dict def
% Define a temporary string for local use, since using =string
% interferes with some PostScript programs.
/.fonttempstring 8192 string def
% Split up a search path into individual directories or files.
/.pathlist % <path> .pathlist <dir1|file1> ...
{ { dup length 0 eq { pop exit } if
.filenamelistseparator search not { exit } if
exch pop exch
}
loop
} bind def
% Load a font name -> font file name map.
userdict /Fontmap .FontDirectory maxlength dict put
/.loadFontmap { % <file> .loadFontmap -
% We would like to simply execute .definefontmap as we read,
% but we have to maintain backward compatibility with an older
% specification that makes later entries override earlier
% ones within the same file.
50 dict exch .readFontmap
{ .definefontmap } forall
} bind def
/.readFontmap { % <dict> <file> .readFontmap <dict>
{ dup token not { closefile exit } if
% stack: dict file fontname
% This is a hack to get around the absurd habit of MS-DOS editors
% of adding an EOF character at the end of the file.
dup (\032) eq { pop closefile exit } if
1 index token not
{ (Fontmap entry for ) print dup =only
( has no associated file or alias name! Giving up.) = flush
{.readFontmap} 0 get 1 .quit
} if
dup type dup /stringtype eq exch /nametype eq or not
{ (Fontmap entry for ) print 1 index =only
( has an invalid file or alias name! Giving up.) = flush
{.readFontmap} 0 get 1 .quit
} if
% stack: dict file fontname filename|aliasname
1 index type /stringtype eq
1 index type /nametype eq and 1 index xcheck and
1 index /run eq 2 index /.runlibfile eq or and {
% This is an inclusion entry.
pop findlibfile { exch pop } { file } ifelse
2 index exch .readFontmap pop
} {
% This is a real entry.
% Read and pop tokens until a semicolon.
{ 2 index token not
{ (Fontmap entry for ) print 1 index =only
( ends prematurely! Giving up.) = flush
{.loadFontmap} 0 get 1 .quit
} if
dup /; eq { pop 3 index 3 1 roll .growput exit } if
pop
} loop
} ifelse
} loop
} bind def
% Add an entry in Fontmap. We redefine this if the Level 2
% resource machinery is loaded.
/.definefontmap % <fontname> <file|alias> .definefontmap -
{ % Since Fontmap is global, make sure the values are storable.
% If the fontname contains Unicode (first byte == \000) and
% this is not an alias definition, define an alias using ASCII
% (stripping out the high \000 bytes). Observed with some TT fonts.
1 index 100 string cvs 0 get 0 eq 1 index type /nametype ne and {
1 index 100 string cvs dup length 2 div cvi string true exch
0 1 2 index length 1 sub {
% stack: fontname filename fontnamestring addflag newstring index
dup 4 index exch 2 mul get 0 ne {
% High byte of pair is not \000
pop pop false exch
exit
} if
dup 4 index exch 2 mul 1 add get 2 index 3 1 roll put
} for
exch {
DEBUG { (\nAdding alias for: ) print 1 index ==only ( as: ) print dup == flush } if
cvn exch cvn .definefontmap % recurse with an alias
} {
pop pop % discard the name
} ifelse
} if
.currentglobal 3 1 roll true .setglobal
dup type /stringtype eq
{ dup .gcheck not { dup length string copy } if
}
if
Fontmap 3 -1 roll 2 copy .knownget
{ % Add an element to the end of the existing value,
% unless it's the same as the current last element.
mark exch aload pop counttomark 4 add -1 roll
2 copy eq { cleartomark pop pop } { ] readonly .growput } ifelse
}
{ % Make a new entry.
mark 4 -1 roll ] readonly .growput
}
ifelse .setglobal
} bind def
% Parse a font file just enough to find the FontName or FontType.
/.findfontvalue { % <file> <key> .findfontvalue <value> true
% <file> <key> .findfontvalue false
% Closes the file in either case.
exch dup read {
2 copy unread 16#80 eq {
dup (xxxxxx) readstring pop pop % skip .PFB header
} if
{ % Stack: key file
% Protect ourselves against syntax errors here.
dup { token } stopped { pop false exit } if
not { false exit } if % end of file
dup /eexec eq { pop false exit } if % reached eexec section
dup /Subrs eq { pop false exit } if % Subrs without eexec
dup /CharStrings eq { pop false exit } if % CharStrings without eexec
dup 3 index eq
{ xcheck not { dup token exit } if } % found key
{ pop }
ifelse
} loop
% Stack: key file value true (or)
% Stack: key file false
dup { 4 } { 3 } ifelse -2 roll closefile pop
} { closefile pop false } ifelse
} bind def
/.findfontname
{ /FontName .findfontvalue
} bind def
% If there is no FONTPATH, try to get one from the environment.
NOFONTPATH { /FONTPATH () def } if
/FONTPATH where
{ pop }
{ /FONTPATH (GS_FONTPATH) getenv not { () } if def }
ifelse
FONTPATH length 0 eq { (%END FONTPATH) .skipeof } if
/FONTPATH [ FONTPATH .pathlist ] def
% Scan directories looking for plausible fonts. "Plausible" means that
% the file begins with %!PS-AdobeFont or %!FontType1, or with \200\001
% followed by four arbitrary bytes and then either of these strings.
% To speed up the search, we skip any file whose name appears in
% the Fontmap (with any extension and upper/lower case variation) already,
% and any file whose extension definitely indicates it is not a font.
%
% NOTE: The current implementation of this procedure is somewhat Unix/DOS-
% specific. It assumes that '/' and '\' are directory separators, and that
% the part of a file name following the last '.' is the extension.
%
/.lowerstring % <string> .lowerstring <lowerstring>
{ 0 1 2 index length 1 sub
{ 2 copy get dup 65 ge exch 90 le and
{ 2 copy 2 copy get 32 add put }
if pop
}
for
} bind def
/.splitfilename { % <dir.../base.extn> .basename <base> <extn>
% Make the file name read-only to detect aliasing bugs.
% We really don't like doing this, but we've had one
% such bug already.
readonly {
(/) search { true } { (\\) search } ifelse { pop pop } { exit } ifelse
} loop
dup { (.) search { pop pop } { exit } ifelse } loop
2 copy eq {
pop ()
} {
exch dup length 2 index length 1 add sub 0 exch getinterval exch
} ifelse
} bind def
/.scanfontdict 1 dict def % establish a binding
/.scanfontbegin
{ % Construct the table of all file names already in Fontmap.
currentglobal true setglobal
.scanfontdict dup maxlength Fontmap length 2 add .max .setmaxlength
Fontmap
{ exch pop
{ dup type /stringtype eq
{ .splitfilename pop .fonttempstring copy .lowerstring cvn
.scanfontdict exch true put
}
{ pop
}
ifelse
}
forall
}
forall
setglobal
} bind def
/.scanfontskip mark
% Strings are converted to names anyway, so....
/afm true
/bat true
/c true
/cmd true
/com true
/dir true
/dll true
/doc true
/drv true
/exe true
/fon true
/fot true
/h true
/o true
/obj true
/pfm true
/pss true % Adobe Multiple Master font instances
/txt true
.dicttomark def
/.scan1fontstring 8192 string def
% %%BeginFont: is not per Adobe documentation, but a few fonts have it.
/.scanfontheaders [(%!PS-Adobe*) (%!FontType*) (%%BeginFont:*)] def
0 .scanfontheaders { length .max } forall 6 add % extra for PFB header
/.scan1fontfirst exch string def
/.scanfontdir % <dirname> .scanfontdir -
{ currentglobal exch true setglobal
QUIET not { (Scanning ) print dup print ( for fonts...) print flush } if
[ 1 index ] (*) .generate_dir_list_templates
0 0 0 4 -1 roll % found scanned files
{ % stack: <fontcount> <scancount> <filecount> <filename>
exch 1 add exch % increment filecount
dup .splitfilename .fonttempstring copy .lowerstring
% stack: <fontcount> <scancount> <filecount+1> <filename>
% <BASE> <ext>
.scanfontskip exch known exch .scanfontdict exch known or
{ pop
% stack: <fontcount> <scancount> <filecount+1>
}
{ 3 -1 roll 1 add 3 1 roll
% stack: <fontcount> <scancount+1> <filecount+1> <filename>
dup (r) { file } .internalstopped
{ pop pop null ()
% stack: <fontcount> <scancount+1> <filecount+1> <filename>
% null ()
}
{
% On some platforms, the file operator will open directories,
% but an error will occur if we try to read from one.
% Handle this possibility here.
dup .scan1fontfirst { readstring } .internalstopped
{ pop pop () }
{ pop }
ifelse
% stack: <fontcount> <scancount+1> <filecount+1>
% <filename> <file> <header>
}
ifelse
% Check for PFB file header.
dup (\200\001????*) .stringmatch
{ dup length 6 sub 6 exch getinterval }
if
% Check for font file headers.
false .scanfontheaders
{ 2 index exch .stringmatch or
}
forall exch pop
{ % stack: <fontcount> <scancount+1> <filecount+1> <filename>
% <file>
dup 0 setfileposition .findfontname
{ dup Fontmap exch known
{ pop pop
}
{ exch copystring exch
DEBUG { ( ) print dup =only flush } if
1 index .definefontmap
.splitfilename pop true .scanfontdict 3 1 roll .growput
% Increment fontcount.
3 -1 roll 1 add 3 1 roll
}
ifelse
}
{ pop
}
ifelse
}
% .findfontname will have done a closefile in the above case.
{ dup null eq { pop } { closefile } ifelse pop
}
ifelse
}
ifelse
}
.scan1fontstring filenameforall
QUIET
{ pop pop pop }
{ ( ) print =only ( files, ) print =only ( scanned, ) print
=only ( new fonts.) = flush
}
ifelse
pop
setglobal
} bind def
%END FONTPATH
% Try to enumerate native fonts registered with the os
% and add them to the fontmap. This relies on a custom
% operator which calls platform-specific C code. It
% returns an array of arrays, each containing a pair
% of strings: what the system thinks is the ps name,
% and the access path.
/.setnativefontmapbuilt { % set whether we've been run
systemdict exch /.nativefontmapbuilt exch .forceput
} .bind executeonly def
false .setnativefontmapbuilt
/.buildnativefontmap { % - .buildnativefontmap <bool>
QUIET not {
(Querying operating system for font files...\n)
print flush
} if
.getnativefonts dup
{
exch
{
% stack: [ (name) (path) ]
% verify the font name ourselves
dup 1 get (r) { file } stopped
{
% skip the entry if we can't open the returned path
pop pop pop
}{
% we could open the font file
.findfontname
not { dup 0 get } if % stack: (newname) [ (name) (path) ]
% DEBUG { ( found ) print dup print (\n) print flush } if
% add entry to the fontmap
1 index exch 0 exch dup type /nametype ne {cvn} if put
aload pop .definefontmap
} ifelse
} forall
} if
% record that we've been run
true .setnativefontmapbuilt
} bind def
% Create the dictionary that registers the .buildfont procedure
% (called by definefont) for each FontType.
/buildfontdict 20 dict def
% Register Type 3 fonts, which are always supported, for definefont.
buildfontdict 3 /.buildfont3 cvx put
% Register Type 0 fonts if they are supported. Strictly speaking,
% we should do this in its own file (gs_type0.ps), but since this is
% the only thing that would be in that file, it's simpler to put it here.
/.buildfont0 where { pop buildfontdict 0 /.buildfont0 cvx put } if
% Define definefont. This is a procedure built on a set of operators
% that do all the error checking and key insertion.
/.growfontdict
{ % Grow the font dictionary, if necessary, to ensure room for an
% added entry, making sure there is at least one slot left for FID.
dup maxlength 1 index length sub 2 lt
{ dup dup wcheck
{ .growdict }
{ .growdictlength dict .copydict }
ifelse
}
{ dup wcheck not { dup maxlength dict .copydict } if
}
ifelse
} bind def
/.completefont {
{ % Check for disabled platform fonts.
NOPLATFONTS
{ % Make sure we leave room for FID.
.growfontdict dup /ExactSize 0 put
}
{ % Hack: if the Encoding looks like it might be the
% Symbol or Dingbats encoding, load those now (for the
% benefit of platform font matching) just in case
% the font didn't actually reference them.
% Note that some types of font don't have an Encoding.
dup /Encoding .knownget {
dup length 65 ge {
64 get
dup /congruent eq { SymbolEncoding pop } if
/a9 eq { DingbatsEncoding pop } if
} {
pop
} ifelse
} if
}
ifelse
dup /.OrigFont known not {
dup dup /.OrigFont exch .growput
} if
true exch
% If this is a CIDFont, CIDFontType takes precedence
% over FontType.
dup /CIDFontType known {
/.buildcidfont where {
pop exch not exch % true => false
} if
} if
exch {
dup /FontType get //buildfontdict exch get exec
} {
.buildcidfont
} ifelse
DISKFONTS {
FontFileDirectory 2 index known {
dup /FontFile FontFileDirectory 4 index get .growput
} if
} if
systemdict /ProvideUnicode .knownget not { false } if {
/FontEmulationProcs /ProcSet findresource
/ProvideUnicodeDecoding get exec
} if
readonly % stack: name fontdict
} stopped { /invalidfont signalerror } if
} bind odef
/definefont
{ .completefont
% If the current allocation mode is global, also enter
% the font in LocalFontDirectory.
.currentglobal
{ //systemdict /LocalFontDirectory .knownget
{ 2 index 2 index .growput }
if
}
if
dup .FontDirectory 4 -2 roll .growput
% If the font originated as a resource, register it.
currentfile .currentresourcefile eq { dup .registerfont } if
} odef
% Define a procedure for defining aliased fonts.
% We use this only for explicitly aliased fonts, not substituted fonts:
% we think this matches the observed behavior of Adobe interpreters.
/.aliasfont % <name> <font> .aliasfont <newFont>
{ .currentglobal 3 1 roll dup .gcheck .setglobal
% <bool> <name> <font>
dup length 2 add dict % <bool> <name> <font> <dict>
dup 3 -1 roll % <bool> <name> <dict> <dict> <font>
{ 1 index /FID eq { pop pop } { put dup } ifelse } forall
% <bool> <name> <dict> <dict>
% Stack: global fontname newfont newfont.
% We might be defining a global font whose FontName
% is a local string. This is weird, but legal,
% and doesn't cause problems anywhere else:
% to avoid any possible problems in this case, do a cvn.
% We might also be defining (as an alias) a global font
% whose FontName is a local non-string, if someone passed a
% garbage value to findfont. In this case, just don't
% call definefont at all.
2 index dup type /stringtype eq exch .gcheck or 1 index .gcheck not or
{ pop % <bool> <name> <dict>
1 index dup type /stringtype eq { cvn } if
% <bool> <name> <dict> <name1>
% HACK:
% We want to know whether we alias a font,
% because in this case its FontName to be replaced with the alias.
% There is no simple way to know that at this point.
% But if the original font has defaultfontname,
% we probably substitute it rather than alias.
% Using such condition as an approximation to the strong condition.
%
% Note it works wrongly if Fontmap maps something to defaultfontname like this :
% /Courier /NimbusMonL-Regu ;
% /Something /Courier ;
% The FontName of Something will not be /Something. It will be /Courier .
%
1 index /FontName get defaultfontname ne {
2 copy /FontName exch put
} if
1 index exch /.Alias exch put % <bool> <name> <dict>
dup dup /.OrigFont exch .growput
% Don't bind in definefont, since Level 2 redefines it.
/definefont .systemvar exec
}
{ .completefont pop exch pop
}
ifelse
exch .setglobal
} odef % so findfont will bind it
% Define .loadfontfile for loading a font. If we recognize Type 1 and/or
% TrueType fonts, gs_type1.ps and/or gs_ttf.ps will redefine this.
/.loadfontfile {
% According to Ed Taft, Adobe interpreters push userdict
% before loading a font, and pop it afterwards.
userdict begin
cvx exec
end
} bind def
/.setloadingfont {
//systemdict /.loadingfont 3 -1 roll .forceput
} .bind odef % .forceput must be bound and hidden
/.loadfont
{ % Some buggy fonts leave extra junk on the stack,
% so we have to make a closure that records the stack depth
% in a fail-safe way.
true .setloadingfont
{ /FAPI_hook_disable pop % gs_fapi accesses this with execstack_lookup - don't remove !
{{.loadfontfile} .execasresource} count 1 sub 2 .execn
count exch sub { pop } repeat
exit
} loop % this loop is a pattern for execstack_lookup, don't remove !
false .setloadingfont
} bind def
% Find an alternate font to substitute for an unknown one.
% We go to some trouble to parse the font name and extract
% properties from it. Later entries take priority over earlier.
/.substitutefaces [
% Guess at suitable substitutions for random unknown fonts.
[(Book) /NewCenturySchlbk 0]
[(Grot) /Helvetica 0]
[(Roman) /Times 0]
[(Chancery) /ZapfChancery-MediumItalic 0]
% If the family name appears in the font name,
% use a font from that family.
[(Arial) /Helvetica 0]
[(Avant) /AvantGarde 0]
[(Bookman) /Bookman 0]
[(Century) /NewCenturySchlbk 0]
[(Cour) /Courier 0]
[(Frut) /Helvetica 0]
[(Garamond) /Palatino 0]
[(Geneva) /Helvetica 0]
[(Helv) /Helvetica 0]
[(NewYork) /Bookman 0]
[(Pala) /Palatino 0]
[(Schlbk) /NewCenturySchlbk 0]
[(Swiss) /Helvetica 0]
[(Symbol) /Symbol 0]
[(Times) /Times 0]
% Substitute for Adobe Multiple Master fonts.
[(Minion) /Times 0]
[(Myriad) /Helvetica 0]
% If the font wants to be monospace, use Courier.
[(Monospace) /Courier 0]
[(Typewriter) /Courier 0]
% Define substitutes for the other Adobe PostScript 3 fonts.
% For some of them, the substitution is pretty bad!
[(Albertus) /Palatino 0]
[(AntiqueOlive) /Helvetica 0]
[(Bodoni) /NewCenturySchlbk 0]
[(Chicago) /Helvetica 2]
[(Clarendon) /Bookman 0]
[(Cooper) /NewCenturySchlbk 0]
[(Copperplate) /AvantGarde 0] % inappropriate, small-cap font
[(Coronet) /ZapfChancery-MediumItalic 0]
[(Eurostile) /Helvetica 0]
[(Geneva) /Courier 2] % should be fixed-pitch sans demi
[(GillSans) /Helvetica 2]
[(GillSans-Light) /Helvetica 0]
[(Goudy) /Palatino 0]
[(Hoefler) /NewCenturySchlbk 0]
[(Joanna) /Times 0]
[(LetterGothic) /Courier 0] % should be fixed-pitch sans
[(LubalinGraph-Book) /Bookman 2]
[(LubalinGraph-Demi) /Bookman 0]
[(Marigold) /ZapfChancery-MediumItalic 0]
[(MonaLisa-Recut) /Palatino 0] % inappropriate
[(Monaco) /Courier 2] % should be fixed-pitch sans demi
[(Optima) /Helvetica 0]
[(Oxford) /ZapfChancery-MediumItalic 0]
[(Tekton) /Helvetica 0]
[(Univers) /Helvetica 0]
] readonly def
/.substituteproperties [
[(It) 9] [(Oblique) 1]
[(Black) 2] [(Bd) 2] [(Bold) 2] [(bold) 2] [(Demi) 2] [(Heavy) 2] [(Sb) 2]
[(Cn) 4] [(Cond) 4] [(Narrow) 4] [(Pkg) 4] [(Compr) 4]
[(Serif) 8] [(Sans) -8]
] readonly def
/.fontnameproperties { % <int> <string|name> .fontnameproperties
% <int'>
.fontnamestring
.substituteproperties {
2 copy 0 get search {
pop pop pop dup length 1 sub 1 exch getinterval 3 -1 roll exch {
dup 0 ge { or } { neg not and } ifelse
} forall exch
} {
pop pop
} ifelse
} forall pop
} bind def
/.substitutefamilies mark
/AvantGarde
{/AvantGarde-Book /AvantGarde-BookOblique
/AvantGarde-Demi /AvantGarde-DemiOblique}
/Bookman
{/Bookman-Demi /Bookman-DemiItalic /Bookman-Light /Bookman-LightItalic}
/Courier
{/Courier /Courier-Oblique /Courier-Bold /Courier-BoldOblique}
/Helvetica
{/Helvetica /Helvetica-Oblique /Helvetica-Bold /Helvetica-BoldOblique
/Helvetica-Narrow /Helvetica-Narrow-Oblique
/Helvetica-Narrow-Bold /Helvetica-Narrow-BoldOblique}
/NewCenturySchlbk
{/NewCenturySchlbk-Roman /NewCenturySchlbk-Italic
/NewCenturySchlbk-Bold /NewCenturySchlbk-BoldItalic}
/Palatino
{/Palatino-Roman /Palatino-Italic /Palatino-Bold /Palatino-BoldItalic}
/Symbol
{/Symbol /Symbol /Symbol /Symbol}
/Times
{/Times-Roman /Times-Italic /Times-Bold /Times-BoldItalic}
/ZapfChancery-MediumItalic
{/ZapfChancery-MediumItalic}
.dicttomark readonly def
/.nametostring { % <name> .nametostring <string>
% <other> .nametostring <other>
dup type /nametype eq { .namestring } if
} bind def
/.fontnamestring { % <fontname> .fontnamestring <string|name>
dup type dup /nametype eq {
pop .namestring
} {
/stringtype ne { pop () } if
} ifelse
} bind def
/.substitutefontname { % <fontname> <properties> .substitutefontname
% <altname|null>
% Look for properties and/or a face name in the font name.
% If we find any, use Times (serif) or Helvetica (sans) as the
% base font; otherwise, use the default font.
% Note that the "substituted" font name may be the same as
% the requested one; the caller must check this.
exch .fontnamestring {
defaultfontname /Helvetica-Oblique /Helvetica-Bold /Helvetica-BoldOblique
/Helvetica-Narrow /Helvetica-Narrow-Oblique
/Helvetica-Narrow-Bold /Helvetica-Narrow-BoldOblique
/Times-Roman /Times-Italic /Times-Bold /Times-BoldItalic
/Helvetica-Narrow /Helvetica-Narrow-Oblique
/Helvetica-Narrow-Bold /Helvetica-Narrow-BoldOblique
} 3 1 roll
% Stack: facelist properties fontname
% Look for a face name.
.substitutefaces {
2 copy 0 get search {
pop pop pop
% Stack: facelist properties fontname [(pattern) family properties]
dup 2 get 4 -1 roll or 3 1 roll
1 get .substitutefamilies exch get
4 -1 roll pop 3 1 roll
} {
pop pop
} ifelse
} forall pop
1 index length mod get exec
} bind def
/.substitutefont { % <fontname> .substitutefont <altname>
dup 0 exch .fontnameproperties .substitutefontname
% Only accept fonts known in the Fontmap.
Fontmap 1 index known not { pop defaultfontname } if
} bind def
% If requested, make (and recognize) fake entries in FontDirectory for fonts
% present in Fontmap but not actually loaded. Thanks to Ray Johnston for
% the idea behind this code.
FAKEFONTS not { (%END FAKEFONTS) .skipeof } if
% We use the presence or absence of the FontMatrix key to indicate whether
% a font is real or fake. We must pop the arguments at the very end,
% so that stack protection will be effective.
/definefont { % <name> <font> definefont <font>
dup /FontMatrix known {
//definefont
} {
2 copy /FontName get findfont //definefont exch pop exch pop
} ifelse
} bind odef
/scalefont { % <font> <scale> scalefont <font>
1 index /FontMatrix known {
//scalefont
} {
1 index /FontName get findfont 1 index //scalefont
exch pop exch pop
} ifelse
} bind odef
/makefont { % <font> <matrix> makefont <font>
1 index /FontMatrix known {
//makefont
} {
1 index /FontName get findfont 1 index //makefont
exch pop exch pop
} ifelse
} bind odef
/setfont { % <font> setfont -
dup /FontMatrix known {
//setfont
} {
dup /FontName get findfont //setfont pop
} ifelse
} bind odef
%END FAKEFONTS
% Define findfont so it tries to load a font if it's not found.
% The Red Book requires that findfont be a procedure, not an operator,
% but it still needs to restore the stacks reliably if it fails,
% so we do all the work in an operator.
/.findfont { % <fontname> .findfont <font>
mark 1 index % <fontname> mark <fontname>
//systemdict begin .dofindfont
% <fontname> mark <alias> ... <font>
% Define any needed aliases.
counttomark 1 sub { .aliasfont } repeat end
% <fontname> mark <font>
exch pop exch pop
} odef
/findfont {
.findfont
} bind def
% Check whether the font name we are about to look for is already on the list
% of aliases we're accumulating; if so, cause an error.
/.checkalias % -mark- <alias1> ... <name> .checkalias <<same>>
{ counttomark 1 sub -1 1
{ index 1 index eq
{ pop QUIET not
{ (Unable to substitute for font.) = flush
} if
/findfont cvx /invalidfont signalerror
}
if
}
for
} bind def
% Get a (non-fake) font if present in a FontDirectory.
/.fontknownget % <fontdir> <fontname> .fontknownget <font> true
% <fontdir> <fontname> .fontknownget false
{ .knownget
{ FAKEFONTS
{ dup /FontMatrix known { true } { pop false } ifelse }
{ true }
ifelse
}
{ false
}
ifelse
} bind def
% This is the standard procedure for handling font substitution.
% Its location is per an Adobe newsgroup posting.
% It is called with the font name on the stack, standing in for findfont.
/.stdsubstfont { % mark <alias1> ... <fontname> .stdsubstfont mark <alias1> ... <aliasN> <font>
/SUBSTFONT where {
pop QUIET not {
(Substituting for font ) print dup =only
(.) = flush
} if
% No aliasing.
% This mode is incompatible with high level devices.
cleartomark mark defaultfontname
} {
dup .substitutefont
2 copy eq { pop defaultfontname } if
.checkalias
QUIET not {
SHORTERRORS {
(%%[) print 1 index =only
( not found, substituting ) print dup =only (]%%)
} {
(Substituting font ) print dup =only
( for ) print 1 index =only (.)
} ifelse = flush
} if
} ifelse
.dofindfont
} bind def
% Default font substitution does {pop /Courier} om many implementations.
% GS post-process font substitution in .stdsubstfont and uses {} for
% backward compatibility
$error /SubstituteFont { } put
% Scan the next directory on FONTPATH.
/.scannextfontdir { % - .scannextfontdir <bool>
% If we haven't scanned all the directories in
% FONTPATH, scan the next one.
null 0 1 FONTPATH length 1 sub {
FONTPATH 1 index get null ne { exch pop exit } if pop
} for dup null ne {
dup 0 eq { .scanfontbegin } if
FONTPATH 1 index get .scanfontdir
FONTPATH exch null put true
} {
pop false
} ifelse
} bind def
% Do the work of findfont, including substitution, defaulting, and
% scanning of FONTPATH.
/.dofindfont { % mark <fontname> .dofindfont % mark <alias> ... <font>
.tryfindfont not {
% We didn't find the font. If we haven't scanned
% all the directories in FONTPATH, scan the next one
% now and look for the font again.
.scannextfontdir {
% Start over with an empty alias list.
counttomark 1 sub { pop } repeat % mark <fontname>
.dofindfont
} {
% No more directories to scan. Try building the native
% font map entries if we haven't already done so.
systemdict /.nativefontmapbuilt get not { .buildnativefontmap } { false } ifelse {
% Same stack as at the beginning of .dofindfont.
.dofindfont % start over
} {
% No luck. Make sure we're not already
% looking for the default font.
QUIET not {
(Didn't find this font on the system!\n)
print
} if
dup defaultfontname eq {
QUIET not {
(Unable to load default font ) print
dup =only (! Giving up.) = flush
} if
/findfont cvx /invalidfont signalerror
} if
% Substitute for the font. Don't alias.
% Same stack as at the beginning of .dofindfont.
$error /SubstituteFont get exec
%
% igorm: I guess the surrounding code assumes that .stdsubstfont
% must ADD an alias to allow .checkalias and .findfont to work properly.
% Also I guess that a trailing recursion is
% used in .dofindfont and through .stdsubstfont
% just to represent a simple iteration,
% which accumulates the aliases after the mark.
.stdsubstfont
} ifelse
} ifelse
} if
} bind def
% Try to find a font using only the present contents of Fontmap.
/.tryfindfont { % <fontname> .tryfindfont <font> true
% <fontname> .tryfindfont false
.FontDirectory 1 index .fontknownget
{ % Already loaded
exch pop true
}
{ dup Fontmap exch .knownget not
{ % Unknown font name. Look for a file with the
% same name as the requested font.
.tryloadfont
}
{ % Try each element of the Fontmap in turn.
false exch % (in case we exhaust the list)
% Stack: fontname false fontmaplist
{ exch pop
dup type /nametype eq
{ % Font alias
.checkalias .tryfindfont exit
}
{ dup dup type dup /arraytype eq exch /packedarraytype eq or exch xcheck and
{ % Font with a procedural definition
exec % The procedure will load the font.
% Check to make sure this really happened.
.FontDirectory 1 index .knownget
{ exch pop true exit }
if
}
{ % Font file name
.loadfontloop { true exit } if
}
ifelse
}
ifelse false
}
forall
% Stack: font true -or- fontname false
{ true
}
{ % None of the Fontmap entries worked.
% Try loading a file with the same name
% as the requested font.
.tryloadfont
}
ifelse
}
ifelse
}
ifelse
} bind def
% any user of .putgstringcopy must use bind and executeonly
/.putgstringcopy % <dict> <name> <string> .putgstringcopy -
{ 2 index gcheck currentglobal
2 copy eq {
pop pop .forceput
} {
5 1 roll setglobal
dup length string copy
.forceput setglobal
} ifelse
} .bind odef % must be bound and hidden for .forceput
% Attempt to load a font from a file.
/.tryloadfont { % <fontname> .tryloadfont <font> true
% <fontname> .tryloadfont false
dup .nametostring
% Hack: check for the presence of the resource machinery.
/.genericrfn where {
pop
pop dup .fonttempstring /FontResourceDir getsystemparam .genericrfn
.loadfontloop {
//true
} {
dup .nametostring .loadfontloop
} ifelse
} {
.loadfontloop
} ifelse
} bind def
/.loadfontloop { % <fontname> <filename> .loadfontloop
% <font> true
% -or-
% <fontname> false
% See above regarding the use of 'loop'.
{ % Is the font name a string?
dup type /stringtype ne
{ QUIET not
{ (Can't find font with non-string name: ) print dup =only (.) = flush
}
if pop false exit
}
if
% Can we open the file?
findlibfile not
{ QUIET not
{ (Can't find \(or can't open\) font file ) print dup print
(.) = flush
}
if pop false exit
}
if
% Stack: fontname fontfilename fontfile
DISKFONTS
{ .currentglobal true .setglobal
2 index (r) file
FontFileDirectory exch 5 index exch .growput
.setglobal
}
if
QUIET not
{ (Loading ) print 2 index =only
( font from ) print 1 index print (... ) print flush
}
if
% If LOCALFONTS isn't set, load the font into local or global
% VM according to FontType; if LOCALFONTS is set, load the font
% into the current VM, which is what Adobe printers (but not
% DPS or CPSI) do.
LOCALFONTS { false } { /setglobal where } ifelse
{ pop /FontType .findfontvalue { 1 eq } { false } ifelse
% .setglobal, like setglobal, aliases FontDirectory to
% GlobalFontDirectory if appropriate. However, we mustn't
% allow the current version of .setglobal to be bound in,
% because it's different depending on language level.
.currentglobal exch /.setglobal .systemvar exec
% Remove the fake definition, if any.
.FontDirectory 3 index .undef
1 index (r) file .loadfont .FontDirectory exch
/.setglobal .systemvar exec
}
{ .loadfont .FontDirectory
}
ifelse
% Stack: fontname fontfilename fontdirectory
QUIET not
{ //systemdict /level2dict known
{ .currentglobal false .setglobal vmstatus
true .setglobal vmstatus 3 -1 roll pop
6 -1 roll .setglobal 5
}
{ vmstatus 3
}
ifelse { =only ( ) print } repeat
(done.) = flush
} if
% Check to make sure the font was actually loaded.
dup 3 index .fontknownget
{ dup /PathLoad 4 index //.putgstringcopy exec
4 1 roll pop pop pop true exit
} if
% Maybe the file had a different FontName.
% See if we can get a FontName from the file, and if so,
% whether a font by that name exists now.
exch dup % Stack: origfontname fontdirectory path path
(r) file .findfontname
{ % Stack: origfontname fontdirectory path filefontname
2 index 1 index .fontknownget
{ % Yes. Stack: origfontname fontdirectory path filefontname fontdict
dup 4 -1 roll /PathLoad exch //.putgstringcopy exec
% Stack: origfontname fontdirectory filefontname fontdict
3 -1 roll pop exch
% Stack: origfontname fontdict filefontname
QUIET
{ pop
}
{ (Using ) print =only
( font for ) print 1 index =only
(.) = flush
}
ifelse % Stack: origfontname fontdict
exch pop true exit
% Stack: fontdict
}
if pop % Stack: origfontname fontdirectory path
}
if pop pop % Stack: origfontname
% The font definitely did not load correctly.
QUIET not
{ (Loading ) print dup =only
( font failed.) = flush
} if
false exit
} loop % end of loop
} bind executeonly def % must be bound and hidden for .putgstringcopy
currentdict /.putgstringcopy .undef
% Define a procedure to load all known fonts.
% This isn't likely to be very useful.
/loadallfonts
{ Fontmap { pop findfont pop } forall
} bind def
% If requested, load all the fonts defined in the Fontmap into FontDirectory
% as "fake" fonts i.e., font dicts with only FontName and FontType defined.
% (We define FontType only for the sake of some questionable code in the
% Apple Printer Utility 2.0 font inquiry code.)
%
% Note that this procedure only creates fake fonts in the FontDirectory
% associated with the current VM. This is because in multi-context systems,
% creating the fake fonts in local VM leads to undesirable complications.
/.definefakefonts
{
}
{
(gs_fonts FAKEFONTS) VMDEBUG
Fontmap {
pop dup type /stringtype eq { cvn } if
.FontDirectory 1 index known not {
2 dict dup /FontName 3 index put
dup /FontType 1 put
.FontDirectory 3 1 roll put
} {
pop
} ifelse
} forall
}
FAKEFONTS { exch } if pop def % don't bind, .current/setglobal get redefined
% Install initial fonts from Fontmap.
/.loadinitialfonts
{ NOFONTMAP not
{ /FONTMAP where
{ pop [ FONTMAP .pathlist ]
{ dup VMDEBUG findlibfile
{ exch pop .loadFontmap }
{ /undefinedfilename signalerror }
ifelse
}
}
{ LIBPATH
{ defaultfontmap
false .file_name_combine
{
dup VMDEBUG
(r) { file } .internalstopped {
pop pop
defaultfontmap_content { .definefontmap } forall
} {
.loadFontmap
} ifelse
} {
pop pop
} ifelse
}
}
ifelse forall
}
if
userdict /defaultfontmap_content .undef
.definefakefonts % current VM is global
} def % don't bind, .current/setglobal get redefined
% ---------------- Synthetic font support ---------------- %
% Create a new font by modifying an existing one. paramdict contains
% entries with the same keys as the ones found in a Type 1 font;
% it should also contain enough empty entries to allow adding the
% corresponding non-overridden entries from the original font dictionary,
% including FID. If paramdict includes a FontInfo entry, this will
% also override the original font's FontInfo, entry by entry;
% again, it must contain enough empty entries.
% Note that this procedure does not perform a definefont.
/.makemodifiedfont % <fontdict> <paramdict> .makemodifiedfont <fontdict'>
{ exch
{ % Stack: destdict key value
1 index /FID ne
{ 2 index 2 index known
{ % Skip fontdict entry supplied in paramdict, but
% handle FontInfo specially.
1 index /FontInfo eq
{ 2 index 2 index get % new FontInfo
1 index % old FontInfo
{ % Stack: destdict key value destinfo key value
2 index 2 index known
{ pop pop }
{ 2 index 3 1 roll put }
ifelse
}
forall pop
}
if
}
{ % No override, copy the fontdict entry.
2 index 3 1 roll put
dup dup % to match pop pop below
}
ifelse
}
if
pop pop
} forall
} bind def
% Make a modified font and define it. Note that unlike definefont,
% this does not leave the font on the operand stack.
/.definemodifiedfont % <fontdict> <paramdict> .definemodifiedfont -
{ .makemodifiedfont
dup /FontName get exch definefont pop
} bind def