% Copyright (C) 1997, 1998, 1999, 2000 Aladdin Enterprises. All rights reserved.
%
% This software is provided AS-IS with no warranty, either express or
% implied.
%
% This software is distributed under license and may not be copied,
% modified or distributed except as expressly authorized under the terms
% of the license contained in the file LICENSE in this distribution.
%
% For more information about licensing, please refer to
% http://www.ghostscript.com/licensing/. For information on
% commercial licensing, go to http://www.artifex.com/licensing/ or
% contact Artifex Software, Inc., 101 Lucas Valley Road #110,
% San Rafael, CA 94903, U.S.A., +1(415)492-9861.
% $Id: gs_cff.ps,v 1.19 2005/07/18 05:51:57 ray Exp $
% Loader for CFF (compressed) fonts, including OpenType CFFs.
% The following are not implemented yet:
% Deleted entries in the Name Index
% Embedded PostScript
% Multiple Master fonts
% Chameleon fonts
% Synthetic fonts
% ---------------- Font loading machinery ---------------- %
% Augment the FONTPATH machinery so it recognizes OpenType CFF font sets.
/.scanfontheaders where {
pop /.scanfontheaders [
.scanfontheaders aload pop (OTTO*)
] def
} if
% Load a font file that might be an OpenType CFF font set.
% <file> .loadfontfile -
/.loadnonottofontfile /.loadfontfile load def
/.loadfontfile {
dup 4 string .peekstring pop (OTTO) eq {
% If this is a font at all, it's an OpenType CFF font set.
.loadottofontfile
} {
% Not a TrueType font.
.loadnonottofontfile
} ifelse
} bind def
% <file> .loadottofontfile -
/.loadottofontfile {
/FontSetInit /ProcSet findresource begin
2 dict begin
/f exch def /cff null def
card32 pop card16 6 { next pop } repeat dup {
% Stack: numtables tablesleft
dup 0 eq {
pop pop /.loadottofontfile cvx /invalidfont signalerror
} if
f 4 string readstring pop (CFF ) eq { sub exit } if
f 12 string readstring pop pop 1 sub % skip to next table
} loop
% Stack: tablesread
card32 pop card32 card32
% Stack: tablesread start length
exch 3 -1 roll 1 add 16 mul 12 add sub
f exch subfilefilter flushfile % skip to start
f exch subfilefilter end
% Use a random FontSet resource name. ****** WRONG ******
realtime rand xor =string cvs exch false
ReadData
} bind def
30 dict begin
% ---------------- Standard strings (actually names) ---------------- %
/StandardStrings mark
% The initial StandardStrings that that denote characters are
% defined as a pseudo-Encoding.
% 0
/CFFStandardStrings .findencoding aload pop
% 379
(001.000)
% 380
(001.001) (001.002) (001.003) /Black /Bold
/Book /Light /Medium /Regular /Roman
/Semibold
.packtomark def
% ---------------- Standard encodings ---------------- %
/StandardEncodings [
% StandardEncoding
mark
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110
0 111 112 113 114 0 115 116 117 118 119 120 121 122 0 123
0 124 125 126 127 128 129 130 131 0 132 133 0 134 135 136
137 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 138 0 139 0 0 0 0 140 141 142 143 0 0 0 0
0 144 0 0 0 145 0 0 146 147 148 149 0 0 0 0
.packtomark
% ExpertEncoding
mark
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1 229 230 0 231 232 233 234 235 236 237 238 13 14 15 99
239 240 241 242 243 244 245 246 247 248 27 28 249 250 251 252
0 253 254 255 256 257 0 0 0 258 0 0 259 260 261 262
0 0 263 264 265 0 266 109 110 267 268 269 0 270 271 272
273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288
289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 304 305 306 0 0 307 308 309 310 311 0 312 0 0 313
0 0 314 315 0 0 316 317 318 0 0 0 158 155 163 319
320 321 322 323 324 325 0 0 326 150 164 169 327 328 329 330
331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346
347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362
363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378
.packtomark
] readonly def
% ---------------- Standard Charsets ---------------- %
% We include an explicit 0 at the beginning of each charset.
/StandardCharsets [
% ISOAdobe
mark
0
1 1 228 { } for
.packtomark
% Expert
mark
0
1 229 230 231 232 233 234 235 236 237 238 13 14 15 99 239
240 241 242 243 244 245 246 247 248 27 28 249 250 251 252 253
254 255 256 257 258 259 260 261 262 263 264 265 266 109 110 267
268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283
284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299
300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315
316 317 318 158 155 163 319 320 321 322 323 324 325 326 150 164
169 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341
342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357
358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373
374 375 376 377 378
.packtomark
% ExpertSubset
mark
0
1 231 232 235 236 237 238 13 14 15 99 239 240 241 242 243
244 245 246 247 248 27 28 249 250 251 253 254 255 256 257 258
259 260 261 262 263 264 265 266 109 110 267 268 269 270 272 300
301 302 305 314 315 158 155 163 320 321 322 323 324 325 326 150
164 169 327 328 329 330 331 332 333 334 335 336 337 338 339 340
341 342 343 344 345 346
.packtomark
] readonly def
% ---------------- Font loading ---------------- %
% ------ Utilities ------ %
/advance { % <n> advance -
f cff eq { pos add /pos exch store } { pop } ifelse
} bind def
/next { % - next <byte>
f read {
1 advance
CFFDEBUG { ( ) print dup = } if
} if
} bind def
/next2 { % - next2 <byte1> <byte2>
f read {
f read {
2 advance
CFFDEBUG { ( ) print 1 index =only (,) print dup = } if
} {
1 advance
CFFDEBUG { ( ) print dup = } if
} ifelse
} if
} bind def
/nextstring { % <length> nextstring <string>
dup 0 eq {
pop ()
} {
string f exch readstring pop dup length advance
CFFDEBUG { ( ) print dup == } if
} ifelse
} bind def
/card8 % - card8 <card8>
/next load
def
/card16 { % - card16 <card16>
next2 exch 8 bitshift add
} bind def
/card32 { % - card32 <card32>
card16 16 bitshift card16 add
} bind def
/offsetprocs [
/card8 load
/card16 load
{ card8 16 bitshift card16 add } bind
/card32 load
] readonly def
/offsetproc { % <offsize> offsetproc <proc>
1 sub //offsetprocs exch get
} bind def
/offset { % <offsize> offset <offset>
offsetproc exec
} bind def
/sid % - <sid> sid
/card16 load
def
/Index { % <name> Index <name> <array>
CFFDEBUG { (% reading Index: ) print dup = } if
mark card16 dup 0 ne {
1 exch next offsetproc dup exec pop exch {
dup exec dup 4 -1 roll sub 3 1 roll exch
} repeat pop
} if pop .packtomark
CFFDEBUG { (% Index lengths = ) print dup === } if
[ exch { nextstring } forall ] readonly
} bind def
/tokens { % - tokens <num1> ... <op#> (op# = 12 means EOF)
{
f read not { 12 exit } if
CFFDEBUG { (..) print dup = } if
1 advance
dup 12 eq { pop next 32 add exit } if
dup 28 lt { exit } if
dup 32 lt {
28 sub {
{ card16 32768 xor 32768 sub }
{ 4 offset dup 16#7fffffff gt { -1 32 bitshift add } if }
{ tokenreal }
{ 31 exit }
} exch get exec
} {
dup 247 lt {
139 sub
} {
247 sub {
{ next 108 add }
{ next 364 add }
{ next 620 add }
{ next 876 add }
{ next 108 add neg }
{ next 364 add neg }
{ next 620 add neg }
{ next 876 add neg }
% 255 is deliberately omitted and will cause a rangecheck
} exch get exec
} ifelse
} ifelse
} loop
} bind def
/tokenbuf 100 string def
/tokenput { % <index> <char> tokenput <index+1>
tokenbuf 2 index 3 -1 roll put 1 add
} bind def
/tokenrealarray [
(0123456789.E) { } forall
[(E) 0 get /tokenput cvx (-) 0 get] cvx
null % will give an error
(-) 0 get
{ exit }
] readonly def
/tokenreal { % - tokenreal <float>
0 {
next exch 1 index -4 bitshift tokenrealarray exch get exec tokenput
% We must leave the byte on the stack temporarily so that
% the exit will see a consistent stack state.
1 index 15 and tokenrealarray exch get exec tokenput exch pop
} loop
tokenbuf 0 3 -1 roll getinterval cvr exch pop
} bind def
/Dict { % <opsdict> Dict -
/opdict exch store {
mark tokens
CFFDEBUG { (tokens: ) print ] dup === mark exch aload pop } if
opdict exch .knownget { exec } if cleartomark
} loop cleartomark
} bind def
/idstring { % <sid> idstring <string|name>
dup 391 lt { //StandardStrings } { 391 sub strings } ifelse exch get
} bind def
/idname { % <sid> idname <name>
idstring dup type /nametype ne { cvn } if
} bind def
/subfilefilter { % <file> <length> subfilefilter <filter>
% SubFileDecode interprets a length of 0 as infinite.
dup 0 le { pop pop () 0 } if () /SubFileDecode filter
} bind def
% ------ Top dictionary ------ %
/offput { % <offset> <proc> offput -
1 index 0 le
CFFDEBUG { dup { (not ) print } if (queued: ) print 2 index =only ( ) print 1 index === } if
{ pop pop
}
{ currentdict exch aload length 1 add packedarray cvx
offsets 3 1 roll put
}
ifelse
} bind def
/queueput { % <font> <proc> queueput -
16#7fffffff offsets { pop .min } forall
pos sub nextstring
3 1 roll aload length 2 add packedarray cvx
[ queued aload pop counttomark 2 add -1 roll ]
/queued exch store
} bind def
/printvk { % <value> <key> printvk <value> <key>
CFFDEBUG { (\t% ) print dup =only ( = ) print 1 index === } if
} bind def
/xxput { % <value> <key> <dict> xxput -
3 1 roll exch put
} bind def
/putfi { % <value> <key> putfi -
printvk FontInfo xxput
} bind def
/xdef { % <value> <key> xdef -
exch def
} bind def
/pxdef { % <value> <key> pxdef -
printvk xdef
} bind def
/topdictops mark
12 { CFFDEBUG { (\t% EOD) = } if exit }
0 { idstring /version putfi }
1 { idstring /Notice putfi }
32 { idstring /Copyright putfi }
2 { idstring /FullName putfi }
3 { idstring /FamilyName putfi }
4 { idstring /Weight putfi }
33 { 0 ne /isFixedPitch putfi }
34 { /ItalicAngle putfi }
35 { /UnderlinePosition putfi }
36 { /UnderlineThickness putfi }
37 { /PaintType pxdef }
38 { /FontType pxdef } % actually CharstringType
39 { counttomark array astore /FontMatrix pxdef }
13 { /UniqueID pxdef }
5 { counttomark array astore /FontBBox pxdef }
40 { /StrokeWidth pxdef }
14 { counttomark array astore /XUID pxdef }
15 {
/charset printvk pop
dup StandardCharsets length lt {
StandardCharsets exch get /charset xdef
} {
{ queuecharset } offput
} ifelse
}
16 {
/Encoding printvk pop
dup StandardEncodings length lt {
/Encoding xdef
} {
{ queueEncoding } offput
} ifelse
}
17 { { readCharStrings } offput }
18 { exch /readPrivate cvx 2 packedarray offput }
% CIDFont operators
62 { % ROS, must be first in a CIDFont
currentdict /FontType undef
currentdict /Encoding undef
currentdict /FontMatrix undef
/CIDFontVersion 0 def
/CIDFontRevision 0 def
/CIDFontType 0 def
/CIDCount 8720 def % Default value defined in CFF spec.
3 dict begin
/Supplement pxdef
idstring /Ordering pxdef
idstring /Registry pxdef
/CIDSystemInfo currentdict end def
}
63 { /CIDFontVersion pxdef }
64 { /CIDFontRevision pxdef }
65 { /CIDFontType pxdef }
66 { /CIDCount pxdef }
67 { /UIDBase pxdef }
68 { { readFDArray } offput }
69 { { readFDSelect } offput }
% This operator only appears in a FDArray element.
% We don't really need it, so ignore an error.
70 { { idstring } .internalstopped { pop pop } { /FontName pxdef } ifelse }
.dicttomark readonly def
% readcharset and readFDSelect may require the length of CharStringArray,
% but these structures may occur in the file before the CharStrings.
% If that happens, use a hack: assume that all the data up to the next
% queued read should be read.
/charstringcount { % <font> charstringcount <count> true
% <font> charstringcount <length> false
/CharStringArray .knownget {
length true
} {
% Hack: look for the next queued read.
16#7fffffff offsets { pop .min } forall
pos sub false
} ifelse
} bind def
/readCharStrings { % <font> readCharStrings -
/CharStringArray Index put
} bind def
% ------ Charsets and encodings ------ %
% Note: formats 1 and 2 can overflow the operand stack.
% We'll fix this if it ever becomes necessary.
/charsetcount {
charstringcount { 1 sub } { 2 idiv } ifelse
} bind def
/charsetformats [
{ [ 0 3 -1 roll charsetcount { sid } repeat ]
} bind
{ [ 0 3 -1 roll charsetcount {
dup 0 eq { pop exit } if
sid card8 1 add 2 index .min { exch 1 sub 1 index 1 add } repeat pop
} loop ]
} bind
{ [ 0 3 -1 roll charsetcount {
dup 0 eq { pop exit } if
sid card16 1 add 2 index .min { exch 1 sub 1 index 1 add } repeat pop
} loop ]
} bind
] readonly def
/queuecharset { % <font> queuecharset -
{ readcharset } queueput
} bind def
/readcharset { % <data> <font> readcharset -
begin 0 () /SubFileDecode filter /f exch store
charsetformats next get currentdict exch exec /charset exch def end
} bind def
/encodingformats [
{ 1 1 next { next exch Encoding 3 1 roll put } for
} bind
{ 1 next {
next next 1 add {
% Stack: gid code
Encoding 1 index 3 index put
exch 1 add exch 1 add
} repeat pop
} repeat pop
} bind
] readonly def
/queueEncoding { % <font> queueEncoding -
{ readEncoding } queueput
} bind def
/readEncoding { % <data> <font> readEncoding -
begin 0 () /SubFileDecode filter /f exch store
/Encoding [ 256 { /.notdef } repeat ] def
next encodingformats 1 index 127 and get exec
128 ge {
% Read supplementary encodings.
next {
Encoding next sid idname put
} repeat
} if end
} bind def
% ------ FDArray and FDSelect ------ %
/readFDArray { % <font> readFDArray -
/FDarray Index exch pop exch
2 dict begin /f null def begin
[ exch {
dup length subfilefilter /f exch store
10 dict begin
/FontType 2 def
/PaintType 0 def
/FontMatrix [0.001 0 0 0.001 0 0] def
/Private 20 dict def
//topdictops Dict currentdict end
} forall ] /FDArray xdef end end
} bind def
/fdselectformats [
% Note: this procedure can overflow the operand stack.
% We'll fix this if it ever becomes necessary.
{ [ exch charstringcount pop { card8 } repeat ] } bind % Format 0
{ /FDSelect cvx /invalidfont signalerror } bind % Format 1
dup % Format 2
% The following procedure does not use excessive op-stack space.
{ pop 65535 array card16 card16 exch % Format 3
{ % Stack: array previndex
card8 card16
exch 1 index 4 -1 roll
exch 1 exch 1 sub
{ 3 index exch 2 index put } for pop
} repeat
% now resize the array to the final index.
0 exch getinterval
} bind
] readonly def
/readFDSelect { % <font> readFDSelect -
begin fdselectformats next get currentdict exch exec /FDSelect exch def end
} bind def
% ------ Private dictionary ------ %
/deltarray { % -mark- <num1> ... deltarray <num1'> ...
0 counttomark 1 sub { counttomark -1 roll add dup } repeat pop
counttomark array astore
} bind def
/privatedictops mark
12 { CFFDEBUG { (\t% EOD) = } if exit }
6 { deltarray /BlueValues pxdef }
7 { deltarray /OtherBlues pxdef }
8 { deltarray /FamilyBlues pxdef }
9 { deltarray /FamilyOtherBlues pxdef }
41 { /BlueScale pxdef }
42 { /BlueShift pxdef }
43 { /BlueFuzz pxdef }
10 { 1 array astore /StdHW pxdef }
11 { 1 array astore /StdVW pxdef }
44 { deltarray /StemSnapH pxdef }
45 { deltarray /StemSnapV pxdef }
46 { 0 ne /ForceBold pxdef }
47 { /ForceBoldThreshold pxdef }
48 { /lenIV pxdef }
49 { /LanguageGroup pxdef }
50 { /ExpansionFactor pxdef }
51 { /initialRandomSeed pxdef }
19 { PrivateStart add { readSubrs } offput }
20 { /defaultWidthX pxdef }
21 { /nominalWidthX pxdef }
% Multiple Master fonts only
59 { /NDV pxdef }
60 { /CDV pxdef }
61 { /lenBuildCharArray pxdef }
.dicttomark readonly def
/readPrivate { % <font> <size> readPrivate -
2 dict begin
/PrivateStart pos def
f 3 1 roll exch 1 index f exch subfilefilter /f exch store
dup /FontType get exch
/Private get begin
% Default lenIV to -1 even for Type 1 CharStrings.
2 ne { /lenIV -1 def } if
//privatedictops Dict end
exch /f exch store advance
end
} bind def
/readSubrs { % <font> readSubrs -
/Subrs Index put
} bind def
% ------ Main program ------ %
% Clean up after finishing a font.
/cleanupFont { % (currentdict) cleanupFont -
% Remove unwanted entries.
currentdict /charset undef
currentdict /CharStringArray undef
} bind def
% Update the Encoding and CharStrings for a real font.
/finishFont { % (currentdict) finishFont -
% Construct the real Encoding.
% The value of Encoding is either a number, for predefined
% encodings, or an array of mixed GIDs and names.
/Encoding mark Encoding
CFFDEBUG { (Encoding: ) print dup === flush } if
dup type /integertype eq {
StandardEncodings exch get { idname } forall
} {
{
dup type /integertype eq { charset exch get idname } if
} forall
} ifelse .packtomark def
% Construct the CharStrings.
% Note that they may only correspond to an initial
% subset of the charset.
/CharStrings charset length CharStringArray length .min dict def
CFFDEBUG {
charset length =only ( charset ) print
CharStringArray length =only ( CharStringArray) =
charset == flush
} if
0 1 CharStrings maxlength 1 sub {
dup CharStringArray exch get
exch charset exch get idstring CharStrings xxput
} for
cleanupFont
} bind def
% Replace CharStrings with GlyphDirectory for a CIDFont;
% Move GlobalSubrs to descendent fonts.
/finishCIDFont { % (currentdict) finishCIDFont -
% Construct the GlyphDirectory, similar to CharStrings.
/FDBytes FDArray length 1 gt { 1 } { 0 } ifelse def
/GlyphDirectory charset length CharStringArray length .min dict def
CFFDEBUG {
charset length =only ( charset ) print
CharStringArray length =only ( CharStringArray) =
charset == flush
} if
0 1 GlyphDirectory maxlength 1 sub {
dup CharStringArray exch get
% If there is more than one FDArray entry, add the font
% index to the beginning of each charstring.
FDBytes 1 eq {
FDSelect 2 index get
1 string dup 0 4 -1 roll put exch concatstrings
} if
exch charset exch get GlyphDirectory xxput
} for
Private /GlobalSubrs .knownget {
FDArray {
/Private get /GlobalSubrs 2 index put
} forall
pop
Private /GlobalSubrs undef
} if
% Clean up.
currentdict /FDSelect undef
cleanupFont
} bind def
% We need to pass the file as a parameter for the sake of the PDF
% interpreter. Also for the sake of PDF, a flag forces the font
% to be defined as <resname> instead of the name embedded in the data.
% This is needed for subsetted fonts; it is valid if the CFF
% contains only a single font.
/StartData { % <resname> <nbytes> StartData -
currentfile exch subfilefilter false ReadData
} bind def
/ReadData { % <resname> <file> <forceresname> ReadData -
% Initialize.
30 dict begin
/forceresname exch def
/cff exch def
/pos 0 def
/resname exch cvlit def
/DEBUG CFFDEBUG def % bring the binding closer
% Read the header.
/f cff def
/vmajor next def
/vminor next def
/hdrsize next def
/aoffsize next def
% Read the Indexes.
/names Index def
/topdicts Index def
/strings Index def
/gsubrs Index def
% Read the top Dicts.
/offsets 50 dict def
/queued [] def
/opdict null def % reserve a slot
/fonts [ topdicts {
0 () /SubFileDecode filter /f exch def
40 dict begin
% Preload defaults that differ from PostScript defaults,
% or that are required.
/FontType 2 def
/PaintType 0 def
/FontMatrix [0.001 0 0 0.001 0 0] def
/charset StandardCharsets 0 get def
/Encoding 0 def
/FontInfo 10 dict
dup /UnderlinePosition -100 put
dup /UnderlineThickness 50 put
def
/Private 20 dict
gsubrs length 0 ne { dup /GlobalSubrs gsubrs put } if
def
//topdictops Dict
currentdict end
} forall ] def
% Read other tables with queued offsets.
% We process these in order so we can advance if needed.
% The CFF file may not be positionable.
{ % outer loop since offsets may be updated when processing
CFFDEBUG { (offsets: ) print [ offsets { pop } forall ] == } if
[ offsets { pop } forall ] { lt } .sort % process in order of appearance
{
/f cff def
CFFDEBUG { (queued offset: ) print dup =print flush (, current pos=) print pos = } if
dup pos ne { dup pos sub nextstring pop } if % negative advance will cause error
offsets exch 2 copy get 3 1 roll undef
CFFDEBUG { (exec queued: ) print dup == } if
exec
} forall
offsets length 0 eq { exit } if
} loop
% Process out-of-order tables.
CFFDEBUG { queued length =only ( queued) = flush } if
queued { exec } forall
% Update Encoding and CharStrings.
fonts {
begin
currentdict /CIDFontType known { finishCIDFont } { finishFont } ifelse
end
} forall
% Wrap up.
resname mark 0 1 fonts length 1 sub {
CFFDEBUG { dup =only ( ) print flush } if
dup names exch get
forceresname { pop resname } if
CFFDEBUG { dup == flush } if
exch fonts exch get
dup /CIDFontType known {
% This is a CIDFont.
dup /CIDFontName 3 index put
1 index exch /CIDFont defineresource
} {
% This is a font.
dup /FontName 3 index put
1 index exch definefont
} ifelse
} for .dicttomark
end % temporary dict
end % FontSetInit ProcSet
/FontSet defineresource pop
} bind def
% ---------------- Resource category definition ---------------- %
currentdict end readonly
languagelevel exch 2 .setlanguagelevel
/FontSet /Generic /Category findresource dup length dict .copydict
/Category defineresource pop
/FontSetInit exch /ProcSet defineresource pop
.setlanguagelevel
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