Edit File: gs_fonts.ps
% Copyright (C) 2001-2019 Artifex Software, Inc. % 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. % % Refer to licensing information at http://www.artifex.com or contact % Artifex Software, Inc., 1305 Grant Avenue - Suite 200, Novato, % CA 94945, U.S.A., +1(415)492-9861, for further information. % % 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 % we have to set .languagelevel to 2 so the parser will accept the names % '<<' and '>>', then we use a local definition here. .languagelevel 2 .setlanguagelevel /defaultfontmap_content 50 dict 4 dict begin (<<) cvn /mark load def (>>) cvn /.dicttomark load def /; { 2 index 3 1 roll .growput } bind def %% Replace 0 (Fontmap) end def .setlanguagelevel % ------ End of editable parameters ------ % % Define the UniqueIDs and organization XUID assigned to Artifex. % 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 executeonly odef % 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 userdict /.nativeFontmap .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 dup type /nametype eq { dup (<<) cvn eq { pop mark { counttomark 2 add index token not {//false exit} if dup (>>) cvn eq {pop //true exit} if } loop { .dicttomark }{cleartomark} ifelse } if } if 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 exec} 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. /.definefontmapaux % <bool> <fontname> <file|alias> .definefontmapaux - { % 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 dup length 0 gt { 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 //== exec flush } if cvn exch cvn .definefontmapaux % recurse with an alias } { pop pop % discard the name } ifelse } if } { pop } ifelse .currentglobal 3 1 roll //true .setglobal dup type /stringtype eq { dup .gcheck not { dup length string copy } if } if 4 -1 roll {.nativeFontmap}{Fontmap} ifelse 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 /.definefontmap % <fontname> <file|alias> .definefontmap - { //false 3 1 roll //.definefontmapaux exec } bind def /.definenativefontmap % <fontname> <file|alias> .definenativefontmap - { //true 3 1 roll //.definefontmapaux exec } 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 { //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 executeonly 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 % The following are dummy definitions that, if we have a FONTPATH, will % be replaced in the following section. % They are here so immediately evaulation will work, and allow them to % undefined at the bottom of the file. /.scanfontbegin{} bind def /.scanfontdir {} bind def 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 exec pop //.fonttempstring copy //.lowerstring exec 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 exec //.fonttempstring copy //.lowerstring exec % 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 exec { 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 exec { 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 exec { dup .nativeFontmap exch known { pop pop } { exch dup length string copy % copy string exch DEBUG { ( ) print dup =only flush } if 1 index //.definenativefontmap exec //.splitfilename exec 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 executeonly 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 dup type /booleantype eq { systemdict exch /.nativefontmapbuilt exch .forceput } executeonly {pop} ifelse } .bind executeonly odef systemdict /NONATIVEFONTMAP known .setnativefontmapbuilt /.buildnativefontmap { % - .buildnativefontmap <bool> systemdict /.nativefontmapbuilt .knownget not { //false} if {//false} { 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 } //.internalstopped exec { % skip the entry if we can't open the returned path pop pop pop }{ % we could open the font file mark 2 1 roll {//.findfontname exec} //.internalstopped exec { cleartomark pop } { counttomark 1 add -1 roll pop 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 //.definenativefontmap exec } ifelse } ifelse } forall } if % record that we've been run //true //.setnativefontmapbuilt } ifelse } bind executeonly odef % 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 exec} { //.growdictlength exec 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 exec 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 } { {.buildcidfont} % so it gets bound } ifelse } stopped { $error /command get /invalidfont signalerror } if % Execute the .buildxxxfontx outside the 'stopped', because we don't % want its errors converted to invalidfont. exec { systemdict /ProvideUnicode .knownget not { //false } if { /FontEmulationProcs /ProcSet findresource /ProvideUnicodeDecoding get exec } if readonly % stack: name fontdict } stopped { $error /command get /invalidfont signalerror } if } bind executeonly odef /definefont { dup rcheck not { /definefont cvx /invalidaccess signalerror } if /definefont cvx {.completefont} .errorexec % If the current allocation mode is global, also enter % the font in LocalFontDirectory. .currentglobal { //systemdict /LocalFontDirectory .knownget { 2 index 2 index .forceput } % readonly if } if dup //.FontDirectory 4 -2 roll .forceput % readonly % If the font originated as a resource, register it. currentfile .currentresourcefile eq { dup .registerfont } if readonly } .bind executeonly 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 } { /findfont cvx {.completefont} //.errorexec exec pop exch pop } ifelse exch setglobal } bind executeonly 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 executeonly 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 [ % Define substitutes for the fonts we define in Fontmap.GS [(Charter) /Times 0] [(Utopia) /Times 0] [(Antiqua) /Times 0] [(Calligraphic) /Helvetica 0] [(Hershey) /Times 0] % 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) 1] [(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 /.fontnamestring { % <fontname> .fontnamestring <string|name> dup type dup /nametype eq { pop .namestring } { /stringtype ne { pop () } if } ifelse } bind def /.fontnameproperties { % <int> <string|name> .fontnameproperties % <int'> //.fontnamestring exec //.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 /.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 exec { 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 executeonly odef /.substitutefont { % <fontname> .substitutefont <altname> dup 0 exch //.fontnameproperties exec .substitutefontname % Only accept fonts known in the Fontmap. Fontmap 1 index known not { .nativeFontmap 1 index known not {pop defaultfontname } if } if } bind executeonly odef % 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 } bind 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 exec 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 /Font findresource } bind executeonly 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 exec} if FONTPATH 1 index get //.scanfontdir exec 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 exec { % 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. .buildnativefontmap { % 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 exec } ifelse } ifelse } if } bind executeonly 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 } executeonly { 5 1 roll setglobal dup length string copy .forceput setglobal } executeonly ifelse } .bind executeonly odef % must be bound and hidden for .forceput /.loadfontloop { % <fontname> <filename> <libflag> .loadfontloop % <font> true % -or- % <fontname> false % See above regarding the use of 'loop'. { % Is the font name a string? 1 index type /stringtype ne { pop QUIET not { (Can't find font with non-string name: ) print dup =only (.) = flush } if pop //false exit } if % check <libflag> { findlibfile not } { dup (r) { file } stopped { pop pop //true } { //false } ifelse } ifelse { QUIET not { (Can't find \(or can't open\) font file ) print dup print (.) = flush } if pop //false exit } if % Stack: fontname fontfilename fontfile 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 .forceundef % readonly 1 index (r) file .loadfont //.FontDirectory exch /.setglobal .systemvar exec } executeonly { .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 exec { dup /PathLoad 4 index //.putgstringcopy 4 1 roll pop pop pop //true exit } executeonly 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 exec { % Stack: origfontname fontdirectory path filefontname 2 index 1 index //.fontknownget exec { % Yes. Stack: origfontname fontdirectory path filefontname fontdict dup 4 -1 roll /PathLoad exch //.putgstringcopy % Stack: origfontname fontdirectory filefontname fontdict 3 -1 roll pop % Stack: origfontname filefontname fontdict dup /FontName get dup //.FontDirectory exch .forceundef /GlobalFontDirectory .systemvar exch .forceundef dup length dict .copydict dup 3 index /FontName exch put 2 index exch definefont exch QUIET { pop } { (Using ) print =only ( font for ) print 1 index =only (.) = flush } ifelse % Stack: origfontname fontdict exch pop //true exit % Stack: fontdict } executeonly if pop % Stack: origfontname fontdirectory path } executeonly 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 odef % must be bound and hidden for .putgstringcopy % Attempt to load a font from a file. /.tryloadfont { % <fontname> .tryloadfont <font> true % <fontname> .tryloadfont false dup //.nametostring exec % Hack: check for the presence of the resource machinery. /.genericrfn where { pop pop dup //.fonttempstring /FontResourceDir getsystemparam .genericrfn {//false .loadfontloop} //.internalstopped exec {//false} if { //true } { dup //.nametostring exec {//true .loadfontloop} //.internalstopped exec {//false} if } ifelse } { {//true .loadfontloop} //.internalstopped exec {//false} if } ifelse } 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 exec { % Already loaded exch pop //true } { dup Fontmap exch .knownget { //true //true } { % Unknown font name. Look for a file with the % same name as the requested font. dup //.tryloadfont exec { exch pop //true //false } { % if we can't load by name check the native font map dup .nativeFontmap exch .knownget { //true //true } { //false //false } ifelse } ifelse } ifelse { % Try each element of the Fontmap in turn. pop //false exch % (in case we exhaust the list) % Stack: fontname false fontmaplist { exch pop dup type /nametype eq { % Font alias //.checkalias exec dup .tryfindfont { % We don't want to reuse an embedded font as a substitute % so make sure the font came from disk before using it. dup /Path known 1 index /PathLoad known or { exch pop //true exit } { % if the candidate didn't come from disk, remove it from % FontDirectory and try again. pop dup undefinefont .tryfindfont exit } ifelse } if } { 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 dup type /dicttype eq { begin Path } { 1 dict begin } ifelse //true .loadfontloop end { //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 exec } ifelse } if } ifelse } bind executeonly def % Define a procedure to load all known fonts. % This isn't likely to be very useful. /loadallfonts { [Fontmap .nativeFontmap] { { pop findfont pop } forall } 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 .nativeFontmap ] { { 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 //.forceput exec % readonly } { pop } ifelse } forall } forall } executeonly % hide .forceput 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 exec] { dup VMDEBUG findlibfile { exch pop //.loadFontmap exec } { /undefinedfilename signalerror } ifelse } } { LIBPATH { defaultfontmap //false .file_name_combine { dup VMDEBUG (r) { file } //.internalstopped exec { pop pop defaultfontmap_content { .definefontmap } forall } { //.loadFontmap exec } ifelse } { pop pop } ifelse } } ifelse forall } if userdict /defaultfontmap_content .undef //.definefakefonts exec % current VM is global } def % don't bind, .current/setglobal get redefined % Undef these, not needed outside this file [ % /.fonttempstring /.scannextfontdir - are also used in gs_res.ps, so are undefined there % /.scanfontheaders - used in gs_cff.ps, gs_ttf.ps /.loadfontloop /.tryloadfont /.findfont /.pathlist /.loadFontmap /.lowerstring /.splitfilename /.scanfontdict /.scanfontbegin /.scanfontskip /.scan1fontstring /.scan1fontfirst /.scanfontdir /.setnativefontmapbuilt /.aliasfont /.setloadingfont /.substitutefaces /.substituteproperties /.substitutefamilies /.nametostring /.fontnamestring /.checkalias /.fontknownget /.stdsubstfont /.putgstringcopy /.definenativefontmap /.findfontname ] {systemdict exch .forceundef} forall
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