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2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 | % Copyright (C) 2001-2012 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., 7 Mt. Lassen Drive - Suite A-134, San Rafael,
% CA 94903, U.S.A., +1(415)492-9861, for further information.
%
% PDF font operations.
% Since PDF font are not unique and can collide with external font resources
% or each other, use font dictionaries obtained from PDF directly, never
% register them as resources or look them up by name. Use findfont oparator
% for non-embedded fonts only. CIDFont resources still use the old logic
% described below.
% Finding a font by name can't give a proper result when PDF font names aren't unique.
% But it is only the way to obtain a font in Postscript after a font file is executed.
% Therefore using a FontName (and findfont) is allowed only
% immediately after a font file is executed.
% In all other cases the font to be found by a pointer through PDF structures.
%
% This ideal logics can't work for documents,
% which define a font resource with an embedded font,
% and another font resource with same BaseFont but with no embedded font
% (and possibly with no font descriptor).
% Our testbase does contain such examples.
% In this case we do find font by FontName (with findfont),
% since there is no other way to get a reasonable result.
/.setlanguagelevel where { pop 2 .setlanguagelevel } if
.currentglobal //true .setglobal
/pdfdict where { pop } { /pdfdict 100 dict def } ifelse
GS_PDF_ProcSet begin
pdfdict begin
% We cache the PostScript font in an additional element of the
% font resource dictionary, called PSFont.
% ---------------- Encodings ---------------- %
/.notdefEncoding 256 { /.notdef } repeat 256 packedarray def
% Apply a list of differences to an Encoding.
% Note that the differences may cause the array to grow.
/updateencoding { % <encoding|null> <differences> updateencoding <enc'>
% Calculate the length of the result.
% in case the incoming Encoding is null, use .notdefEncoding
exch dup //null eq { pop .notdefEncoding } if
0 0 3 index {
dup type /nametype ne { exch pop oforce } { pop 1 add } ifelse
% Differences list may not be in order, update the largest_index
% stack: <Differences> <encoding> <largest_index> <at_index>
2 copy lt { exch pop dup } if % at_index is new largest
} forall
pop 1 index length .max array dup 0 4 -1 roll putinterval
exch 0 exch {
% Stack: enc' code element
dup type /nametype ne
{ exch pop oforce }
{ 3 copy put pop 1 add }
ifelse
} forall pop
} bdef
/good_encoding_names <<
/MacRomanEncoding 0 /MacExpertEncoding 0 /WinAnsiEncoding 0
>> readonly def
/known_symbolic_fonts <<
/Wingdings2 0
/ZapfDingbats 0
>> readonly def
% Get the Encoding for a font.
/getencoding % <base-encoding> <font-resource> getencoding <enc>
{ dup /Encoding knownoget
{ dup type /nametype eq
{
% The published PDF specification says the Encoding name
% "must be" one of the 3 predefined Encodings, implying
% that an error should occur if it isn't. However, Acrobat
% Reader simply ignores unknown names, and since there are
% some buggy applications that rely on this, we do the same.
//good_encoding_names 1 index known {
exch /BaseFont knownoget not { 0 } if
% Ignore named encodings for known symbolic fonts. See bug 690135.
//known_symbolic_fonts exch known {
pop
} {
exch pop findencoding
} ifelse
} {
pop pop
} ifelse
}
{ exch pop
dup type /arraytype eq
{ exch pop
( **** Warning: Encoding is an array, not name or dictionary.\n) pdfformatwarning
}
{ dup /BaseEncoding knownoget
{
%% Originally we ignored the specific invalid name '/' here from Bug #687786, however
%% Bug #696942 contains an invalid BaseEncoding '/utf-8', so now we check all BaseEncoding
%% against the permitted names, just as we do for Encodings.
//good_encoding_names 1 index known{
findencoding 3 -1 roll pop exch
}{
( **** Error: Invalid BaseEncoding name ") print 256 string cvs print (" ignoring BaseEncoding.\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
}ifelse
} if
/Differences knownoget { updateencoding } if
}
ifelse
}
ifelse
} {
pop
( **** Error: Encoding not present.\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
}
ifelse
} bdef
currentdict /good_encoding_names undef
currentdict /known_symbolic_fonts undef
/checkGlyphNames2Unicode % <dict> checkGlyphNames2Unicode -
{
PDFDEBUG {
dup /FontInfo .knownget {
/GlyphNames2Unicode .knownget {
(Has GlyphNames2Unicode) =
pop % { exch //== exec //== exec} forall
} if
} if
} if
pop
} bind def
% Define a font using it's FontName as the key.
% Adjust a font according to the Encoding and Widths in the font resource.
/adjustfont { % <font-resource> <font> adjustfont <font'>
getfontencoding
3 copy .processToUnicode
getfontmetrics 5 -1 roll pop .updatefont {
%% Bug #696306 has a broken type 1 font where the eexec encrypted portion simply ends
%% leaving a partial glyph description and, more importantly, the Private dictionary
%% on the operand stack. Ths means the font dictonary does not contain a Private
%% dictionary which causes .buildfont1 to throw an error. .completefont calls .buildfont1
%% (which is obscured by a definition in gs_type1.ps) so we need to check the reault
%% of .completefont. If it fails we must discard the font dictionary and use a fallback.
{.completefont} stopped {
(\n *** ERROR: The font ) print /FontName get 256 string cvs print ( is damaged and cannot be used. Switching to a\n) pdfformaterror
( last-ditch fallback, text may not render correctly, or at all.\n\n) pdfformaterror
/Helvetica findfont
}if
} if
} bind def
% Get the (possibly modified) encoding of a font.
/getfontencoding { % <font-resource> <font> getfontencoding
% <font-resource> <font> <Encoding|null>
% Ignore encoding when TrueType is requested
% and loaded from an embedded stream.
% All other cases are left unchanged.
dup /FontType get 42 eq 1 index /PathLoad known not and
2 index /Subtype get /TrueType eq and {
//null
} {
% Acrobat appears to be always using StandardEcoding as the
% default encoding for some non-symbolic fonts (rather than,
% as the spec states, the encoding specified by the font).
% As this is contrary to spec, and we only have a CFF
% example, I've restricted this to fonts with Subtype Type1C
% *and* that result in a Type 2 PS font.
1 index /FontDescriptor knownoget
{
dup
% Unfortunately, Acrobat doesn't enforce the meaning of
% FontFile[23] so whilst, in theory, Type1C should only
% occur in FontFile3, we can't rely on that.
dup /FontFile knownoget not
{
dup /FontFile2 knownoget not
{
dup /FontFile3 knownoget not {1 dict} if
} if
} if
exch pop /Subtype knownoget {/Type1C eq}{//false} ifelse
exch /Flags knownoget {4 and 4 eq not}{false}ifelse and
} {//false} ifelse
1 index /FontType get 2 eq and
{
2 index /Encoding knownoget {pop StandardEncoding 2 index getencoding} { //null } ifelse
}
{
2 index /Encoding known {
dup /Encoding knownoget { 2 index getencoding } { //null } ifelse
} {
//null
} ifelse
} ifelse
} ifelse
} bdef
% Returns true if the current glyph is in the Differences array at
% the specified index value. This is needed because the Widths
% array may map to the same glyph at different positions from the
% Encoding. We want to use the Width that was associated with the
% one specified in the Encoding::Differences list.
/match_in_diff % <Differences> <index> <glyphname> match_in_diff <bool>
{ //false 4 1 roll 0 4 -1 roll % stack: false index glyphname at_index==0 Differences
{ exch 1 index type /nametype ne {
% stack: false index glyphname Diff_element at_index
pop % Diff_element is new at_index
} {
% stack: false index glyphname Diff_element at_index
exch 2 index eq {
% stack: false index glyphname at_index
dup 3 index eq {
//true 5 1 roll % stack: true false index glyphname at_index
pop exit
} if
} if
1 add % at_index++ stack: false index glyphname at_index'
} ifelse
} forall
% stack: true false index glyphname
% or : false index glyphname at_index
pop pop pop
} bdef
/unique_name { % <dict> </root> unique_name </unique>
%
% Note : this function interacts with pdf_write_encoding in src/gdevpdtw.c
% and with copied_drop_extension_glyphs in src\gxfcopy.c
% by adding a reserved substring (~GS~).
%
.namestring % <<>> (root)
0 1 65535 {
5 string cvs % <<>> (root) (0)
(~GS~) exch concatstrings
1 index exch % <<>> (root) (root) (~GS~0)
concatstrings % <<>> (root) (root~GS~0)
dup % <<>> (root) (root~GS~0) (root~GS~0)
3 index exch % <<>> (root) (root~GS~0) <<>> (root~GS~0)
known not {
exch pop exit % <<>> (root~GS~0)
} if
pop
} for
exch pop cvn % /root0
} bdef
% Get the metrics of a font, if specified.
/getfontmetrics { % <font-resource> <font> <Encoding|null> getfontmetrics
% <font-resource> <font> <Encoding|null>
% <Metrics|null> <GlyphMap|null>
2 index /Widths oknown {
dup //null eq { pop dup /Encoding get } if
7 dict begin
dup length dict
/Metrics exch def
/Encoding exch def
/GlyphMap //null def
exch
dup /Widths oget /Widths exch def
% Stack: font font-res
% Note that widths are always based on a 1000-unit
% character space, but the FontMatrix may specify
% some other scale factor. Compensate for this here,
% by scaling the Widths if necessary.
0.001 2 index /FontMatrix get 0 get
dup 0 eq {
% FontMatrix.xx == 0, so we cannot scale down by xx.
% - FontMatrix[0] == 0 implies either FontMatrix[1] <> 0 or
% FontMatrix cannot be inverted. In the 1st case we have
% FontMatrixNonHV == true and will render text with cshow + xshow.
% In the 2nd case, metrics in the PDF Font object cannot be enforced
% [by altering metrics in PS glyph space].
% HACK:
% - we scale down by FontMatrix[1];
% - given the format of Metrics entries we use, wy = 0 in glyph space;
% - as a result, the cshow procedure receives as wy the value we
% need for wx (all of this in PS user space).
pop
2 index /FontMatrix get 1 get
dup 0 eq { pop 1 } if % sorry, no way to enforce PDF metrics by altering the font
} if
div
% Stack: font font-res mscale
/FirstChar 2 index /FirstChar knownoget not {
( **** Warning: /FirstChar attribute is missing, assuming 0.\n) pdfformatwarning
0
} if def
/LastChar 2 index /LastChar knownoget not {
( **** Warning: /LastChar attribute is missing, assuming 255.\n) pdfformatwarning
255
} if def
Encoding length LastChar le {
( **** Warning: Font Encoding array size is smaller than character range.\n)
pdfformatwarning
} if
1 index /FontDescriptor knownoget {
/MissingWidth knownoget not { 0 } if
}
{ 1000
}
ifelse /MissingWidth exch def
Widths length LastChar FirstChar sub le {
( **** Warning: Font Widths array size is smaller than character range.\n)
pdfformatwarning
/Widths [Widths aload length LastChar FirstChar sub exch sub MissingWidth exch {dup} repeat] def
} if
FirstChar
0 Encoding
{ % Stack: font font-res mscale first-char index charname
1 index FirstChar lt { MissingWidth } {
1 index LastChar gt { MissingWidth } { Widths 2 index FirstChar sub get } ifelse
} ifelse
oforce
% Stack: font font-res mscale first-char index charname width
4 index mul
% The following 'loop' is only context for 'exit'.
{
% Work around a bug in pdfTeX, which can generate Encoding
% vectors containing nulls :
1 index //null eq { exit } if
Metrics 2 index .knownget {
1 index ne
} {
//false
} ifelse {
% Two or more Encoding elements refer same glyph name,
% and Widths specify different wihts for it.
% Since a Postscript font can't have different
% Metrics for same glyph name,
% we generate an unique name, and create a new
% Charstrings entry with same glyph value.
GlyphMap //null eq {
/Encoding Encoding dup length array copy def
/GlyphMap 4 dict def
} if
% To prevent too many new names, check whether
% we can use one already created for same glyph.
//true
GlyphMap { % f r s c i n w b n1 n2
4 index eq { % f r s c i n w b n1
dup Metrics exch get % f r s c i n w b n1 w1
3 index eq { % f r s c i n w b n1
4 3 roll pop % f r s c i w b n1
3 1 roll pop % f r s c i n1 w
Encoding 3 index 3 index put
//false % f r s c i n1 w b
exit
} {
pop
} ifelse
} { % f r s c i n w b n1
pop
} ifelse
} forall % f r s c i n w b
{ % Do create a new name.
Metrics 2 index //unique_name exec % f r s c i n w nn
Encoding 4 index 2 index put
GlyphMap 1 index 5 -1 roll put % f r s c i w nn
exch
% Stack: font font-res mscale first-char index new_name width
} if
} if
2 copy Metrics 3 1 roll put
exit
} loop
pop pop
1 add
}
forall pop pop pop
exch Encoding Metrics GlyphMap end
} {
//null //null
} ifelse
} bdef
currentdict /unique_name undef
currentdict /match_in_diff undef
/ToUnicodeCMapReader 4 dict begin
/defineresource % <name> <dict> <cat-name> defineresource <dict>
{
pop
dup userdict exch /.lastToUnicode exch put
exch pop
} bdef
/CIDSystemInfo
{
( **** Warning: ToUnicode CMap has invalid syntax near CIDSystemInfo.\n) pdfformatwarning
/CIDSystemInfo
} bdef % A work around a bug in Altona.Page_3.2002-09-27.pdf - a slash is missed.
/CMapName
{
( **** Warning: ToUnicode CMap has no CMapName.\n\
See the comment to revision 6201 in gs/doc/ps2pdf.htm#Problems .\n) pdfformatwarning
/CMap1 % arbitrary, PDF defineresource tolerates non-unique names
} bdef % A work around incorrect ToUnicode CMap generated by GS before rev. 6201.
% Split large ranges into smaller chunks to stay withing the limits
% of various PS% objects and speed up operand stack manipulation,
% esp. "counttomatk -3 roll". Bug 691908.
/beginbfrange {
{ pop
mark
256 {
currentfile token not { /endbfrange exit } if
dup /endbfrange eq { exit } if
currentfile token not { pop /endbfrange } if
currentfile token not { pop pop /endbfrange } if
dup ([) eq {
pop [
{ currentfile token not { exit } if
dup (]) eq { pop exit } if
} loop ]
} if
} repeat
dup /endbfrange eq {
pop endbfrange exit
} {
endbfrange
mark
} ifelse
} loop
} bdef
currentdict end readonly def
/string2number % <string> string2number <number>
{ 0 exch dup 0 exch 1 exch length 1 sub { % n () i
1 index exch get % n () v
3 2 roll 256 mul add exch % v+n*256 ()
} for
pop % N
} bind def
/copy&def % <key> <value> <bool> copy&def -
{
{ //true
} {
currentdict gcheck {
dup gcheck not
} {
//false
} ifelse
} ifelse
{ currentglobal currentdict gcheck setglobal
exch dup length string copy exch
setglobal
} if
def
} bind def
/.convert_ToUnicode-into-g2u % <GlyphNames2Unicode> <Encoding|null> <CMap> .convert_ToUnicode-into-g2u -
{
CMAPDEBUG {
(.convert_ToUnicode-into-g2u beg) =
} if
3 2 roll begin
/.CodeMapData get % About the data format see gs_cmap.ps, the comment after "CMap operators".
1 get % code maps
{
CMAPDEBUG {
dup //== exec
} if
dup length 1 sub 0 exch 5 exch { % e [] i
2 copy get % e [] i (prefix)
string2number % e [] i prefix
2 index 2 index 1 add get % e [] i prefix (key_size,?is_range,value_type,value_size)
dup 0 get 8 mul % e [] i prefix (key_size,?is_range,value_type,value_size) key_size*8
3 2 roll exch bitshift exch % e [] i prefix<<key_size*8 (key_size,?is_range,value_type,value_size)
dup 0 get exch 3 get % e [] i offset key_size value_size
4 index 4 index 2 add get % e [] i offset key_size value_size (keys)
5 index 5 index 3 add get % e [] i offset key_size value_size (keys) (values)
CMAPDEBUG {
( offset=) print 4 index =string cvs print
( key_size=) print 3 index =string cvs print
( value_size=) print 2 index =
( keys=) print 1 index //== exec
( values=) print dup //== exec
} if
1 index length 0 eq {
% A single pair.
exch pop exch pop exch pop exch % e [] i (values) offset
4 index //null ne {
4 index length 1 index gt {
4 index exch get
} if
} if % e [] i (values) cid|name
exch
CMAPDEBUG {
( defined single: ) print 1 index =string cvs print ( ) print dup //== exec
} if
//false copy&def % e [] i
pop % e []
} {
% A range. % e [] i offset key_size value_size (keys) (values)
dup length string copy % protect the original string from modifications below.
0 4 index 2 mul 3 index length 1 sub { % e [] i offset key_size value_size (keys) (values) j
2 index 1 index 6 index getinterval
string2number % e [] i offset key_size value_size (keys) (values) j keyL
6 index add
CMAPDEBUG {
( keyL=) print dup =string cvs print
} if
3 index 2 index 7 index add 7 index getinterval
string2number % e [] i offset key_size value_size (keys) (values) j keyL keyH
7 index add
CMAPDEBUG {
( keyH=) print dup =
} if
3 2 roll 6 index idiv 5 index mul % e [] i offset key_size value_size (keys) (values) keyL keyH J
3 index exch 6 index getinterval % e [] i offset key_size value_size (keys) (values) keyL keyH (valueL)
3 1 roll 1 exch { % e [] i offset key_size value_size (keys) (values) (value) k
9 index //null ne {
9 index exch get % e [] i offset key_size value_size (keys) (values) (value) name
} if % e [] i offset key_size value_size (keys) (values) (value) cid|name
1 index % e [] i offset key_size value_size (keys) (values) (value) cid|name (value)
CMAPDEBUG {
( defined from range: ) print 1 index =string cvs print ( ) print dup //== exec
} if
//true copy&def % e [] i offset key_size value_size (keys) (values) (value)
%% Calculate the value from the last string
dup dup length 1 sub 0 exch 0 1 3 -1 roll
{
% (string) value index
exch 256 mul exch
2 index exch get add
} for
%% and increment the value for the next string
1 add
%% Now convert the value into a string of bytes.
1 index length 1 sub 1 exch 0 1 3 -1 roll
{
% (string) value divisor index
2 index 2 index idiv 255 and % (string) value divisor index byte
exch 4 index length 1 sub exch sub % (string) value divisor byte string_position
5 index % (string) value divisor byte string_position (string)
exch 3 -1 roll put % (string) value divisor
256 mul
} for
pop pop pop
} for % e [] i offset key_size value_size (keys) (values) (value)
} for
pop pop pop pop pop pop pop % e []
} ifelse
} for
pop % e
} forall
end
pop %
CMAPDEBUG {
(.convert_ToUnicode-into-g2u end) =
} if
} bind def
/.DoToUnicode?
{
/IgnoreToUnicode where
{/IgnoreToUnicode get not}
{//true} ifelse
} bind def
/.processToUnicode % <font-resource> <font-dict> <encoding|null> .processToUnicode -
{
//.DoToUnicode? exec
{
currentdict count 1 sub /.stackdepth exch .forceput
currentdict countdictstack /.dstackdepth exch .forceput
{
1 index /FontType get 0 eq
{
1 index /FDepVector get 0 get
dup /FontType .knownget not
{
dup /CIDFontType .knownget
{ dup 2 eq {pop 11} if }
{-1} % just some value that's not a valid font type
ifelse
}if
11 eq
{ /Path known}
{pop //false}
ifelse
}
{//false} ifelse
% Currently pdfwrite is only device which can handle GlyphNames2Unicoide to
% generate a ToUnicode CMaps. So don't bother with other devices.
/WantsToUnicode /GetDeviceParam .special_op {
exch pop
}{
//false
}ifelse
or
{
PDFDEBUG {
(.processToUnicode beg) =
} if
2 index /ToUnicode knownoget {
dup type /dicttype eq { dup /File known not } { //true } ifelse {
% We undefine wrong /Length and define /File in stream dictionaries.
% Bug687351.pdf defines /ToUnicode /Identity-H, what is incorrect.
( **** Warning: Ignoring bad ToUnicode CMap.\n) pdfformatwarning
pop
} {
/PDFScanRules .getuserparam dup //null eq {
pop //PDFScanRules_null
} {
1 dict dup /PDFScanRules 4 -1 roll put
} ifelse
//PDFScanRules_true setuserparams
PDFfile fileposition
3 -1 roll
count 1 sub
countdictstack
{ //false resolvestream
% Following Acrobat we ignore everything outside
% begincodespacerange .. endcmap.
dup 0 (begincodespacerange) /SubFileDecode filter flushfile
/CIDInit /ProcSet findresource begin
//ToUnicodeCMapReader begin
12 dict begin
/CMapType 2 def
mark exch % emulate 'begincodespacerange'
0 (endcmap) /SubFileDecode filter cvx /begincmap cvx exch 2 .execn
endcmap
userdict /.lastToUnicode currentdict put
end end end
}
PDFSTOPONERROR {
{ exec } 0 get
//false
5 -2 roll
5
} {
{ stopped } 0 get
4 2 roll
4
} ifelse
array astore cvx exec
countdictstack exch sub 0 .max { end } repeat
count exch sub 2 sub 0 .max { exch pop } repeat
3 1 roll % Stach the stop flag.
PDFfile exch setfileposition
setuserparams
{
( **** Warning: Failed to read ToUnicode CMap.\n) pdfformatwarning
} {
1 index /FontInfo .knownget not {
currentglobal 2 index dup gcheck setglobal
/FontInfo 5 dict dup 5 1 roll .forceput
setglobal
} if
dup /GlyphNames2Unicode .knownget not {
//true % No existing G2U, make one
} {
dup wcheck {
//false % Existing, writeable G2U, don't make new one
} {
pop //true % Existing read only G2U, make new one
} ifelse
} ifelse
{
currentglobal exch dup gcheck setglobal
dup /GlyphNames2Unicode 100 dict dup 4 1 roll .forceput
3 2 roll setglobal
} if % font-res font-dict encoding|null font-info g2u
exch pop exch % font-res font-dict g2u encoding|null
userdict /.lastToUnicode get % font-res font-dict g2u Encoding|null CMap
.convert_ToUnicode-into-g2u % font-res font-dict
//null % font-res font-dict null
} ifelse
} ifelse
} if
PDFDEBUG {
(.processToUnicode end) =
} if
} if
} stopped
{
.dstackdepth 1 countdictstack 1 sub
{pop end} for
.stackdepth 1 count 3 sub
{pop pop} for
} if
pop pop pop
currentdict /.stackdepth .forceundef
currentdict /.dstackdepth .forceundef
}
{pop pop pop}
ifelse
} bind def
currentdict /.DoToUnicode? .forceundef
% ---------------- Descriptors ---------------- %
% Partial descriptors for the 14 built-in fonts. Note that
% from PDF 1.1 to PDF 1.2, the meaning of the Flag 6 in the FontDescriptor
% object has undergone a subtle change in its meaning which has serious
% consequences for searching with Acrobat:
% In PDF 1.1, the flag meant: Font has StandardEncoding
% In PDF 1.2, the flag means: Font has (subset of) StandardRomanCharacterSet
/standardfontdescriptors mark
/Courier mark /Flags 16#23 .dicttomark
/Courier-Oblique 1 index
/Courier-Bold 1 index
/Courier-BoldOblique 1 index
/Helvetica mark /Flags 16#20 .dicttomark
/Helvetica-Oblique 1 index
/Helvetica-Bold 1 index
/Helvetica-BoldOblique 1 index
/Times-Roman mark /Flags 16#22 .dicttomark
/Times-Bold 1 index
/Times-Italic mark /Flags 16#62 .dicttomark
/Times-BoldItalic 1 index
/Symbol mark /Flags 16#4 .dicttomark
/ZapfDingbats 1 index
.dicttomark readonly def
% ---------------- Utilities ---------------- %
/.pdforigfontcache_g 20 dict def
currentglobal //false setglobal
systemdict /.pdforigfontcache_l 20 dict .forceput
setglobal
% Find an original font, using cache to prevent adjustfont to accumulate changes.
/pdffindcachedfont { % <font_name> pdffindcachedfont <font>
dup //.pdforigfontcache_g exch .knownget {
exch pop
} {
dup .pdforigfontcache_l exch .knownget {
exch pop
} {
dup findfont dup
dup gcheck { //.pdforigfontcache_g } { .pdforigfontcache_l } ifelse
% Stack : font_name font font cache
4 2 roll .growput
} ifelse
} ifelse
} bind def
% Add original font to cache to prevent adjustfont to accumulate changes.
/pdfaddcachedfont { % <font_name> pdfaddcachedfont <font>
dup findfont dup % name font font
dup gcheck { //.pdforigfontcache_g } {.pdforigfontcache_l} ifelse
4 2 roll % font d name font
put % font
} bind def
/.remove_font_name_prefix { % <name> .remove_font_name_prefix <name>
dup .namestring (+) search {
//true exch
{ dup 65 lt exch 90 gt or {
pop //false exit
} if
} forall
{ pop exch pop cvn
} {
pop pop
} ifelse
} {
pop
} ifelse
} bind def
% Find a font (except for embedded ones), and adjust its encoding if necessary.
/.pdfdfndict mark
/defaultfontname /Helvetica
.dicttomark readonly def
/pdffindfont { % <font-resource> <fontname> pdffindfont <font>
% If the font isn't available, synthesize one based on
% its descriptor.
dup /Font resourcestatus {
pop pop pdffindcachedfont
} {
1 index /FontDescriptor knownoget {
% Stack: font-res fontname fontdesc
dup /Flags oget
dup 16#40 and -6 bitshift % 1, oblique/italic
1 index 16#40000 and -17 bitshift add % 2, bold
exch 16#2 and 2 bitshift add % 8, serif
% We should look at the fixed flag, too.
% Stack: font-res fontname fontdesc properties
% Even though /FontName is a required key in FontDescriptor dict
% (As of the PDF 1.4 Reference Manual), In the case of missing
% /FontName key, we substitue /BaseFont for the value of /FontName.
% Yet another case of broken PDF's that Adobe Reader accepts.
1 index dup /FontName known {
/FontName oget
dup type /nametype ne {
( **** Error: /FontName in FontDescriptor is not a name.\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
cvn
} if
} {
( **** Error: FontDescriptor missing required /FontName key. BaseFont name used.\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
pop 2 index % grab the BaseFont from the stack.
} ifelse
.remove_font_name_prefix
exch
% Analyzes font name and extract "Bold" and "Narrow" properties
% which are not described by the FontDescriptor Flags.
% We also allow the font name analysis to override the Flags setting
% for Italic/Oblique as this gives us results more consistent with
% Acrobat.
0 2 index .fontnameproperties 7 and or
% Rebind the default font name to Helvetica so that
% fonts with no properties are handled correctly.
//.pdfdfndict begin .substitutefontname end
% Stack: font-res fontname fontdesc substname|null
Fontmap 1 index known
{//false}
{ .buildnativefontmap pop NativeFontmap 1 index known not} ifelse
{
% No available good substitution, use the standard one.
pop 1 index .substitutefont
} if
dup 3 index ne QUIET not and {
(Substituting font ) print dup =only
( for ) print 2 index =only (.) = flush
} if
pdffindcachedfont
% Stack: font-res fontname fontdesc font
% Some non-compliant files are missing FirstChar/LastChar,
% despite referencing a non-base14 font
3 index /FirstChar knownoget
{
0 % push an initial value for accumating the Widths
0 string % and an empty string to interrogate the font
7 index /Widths knownoget
{
0 1 2 index length 1 sub
{
dup 2 index exch get
dup type /packedarraytype eq {exec} if % Handle entries which are indirect references (seriously ? !!)
dup 0 gt % We ignore entries of zero in the widths array
{
exch 5 index add % add FirstChar to the idx to get a char code
dup 64 gt 1 index 91 lt and % we only want to consider A~Z and....
1 index 96 gt 2 index 123 lt and or % ... a~z
{
exch
5 -1 roll add 4 1 roll % add the width to the accumulator on the stack
1 string dup 0 4 -1 roll put
3 -1 roll concatstrings exch % add the char code to the string
}
{
pop pop
} ifelse
}
{
pop pop
} ifelse
} for
pop % get rid of the Widths array
3 -1 roll pop % get rid of the FirstChar value
dup length dup 0 gt
{
3 -1 roll exch div % calculate an average width from the Widths array
gsave
2 index 10 scalefont setfont
exch dup length exch stringwidth
grestore
pop 100 mul exch div div
% Only make the font smaller/narrower, not larger/wider
dup 1.0 lt
{
0 0 2 index 0 0 6 array astore
exch //true .copyfontdict
dup /FontMatrix get 3 -1 roll matrix concatmatrix
exch dup 3 -1 roll /FontMatrix exch put
% we don't need to definfont here, we can leave that to .completefont below
}
{
pop
} ifelse
}
{
% no suitable Widths entries - carry on and hope for the best......
pop pop pop
} ifelse
}
{
% Broken file: no Widths array for non-base14 font - carry on and hope for the best......
( **** Warning: Widths array missing in FontDescriptor for non-base14 font\n)
pdfformatwarning
pop pop pop
} ifelse
}
{
( **** Warning: FirstChar value missing in FontDescriptor for non-base14 font\n)
pdfformatwarning
} ifelse
% Stack: font-res fontname fontdesc font
% If this is a small-caps font, replace the CharString
% entries for a..z.
exch /Flags oget 16#20000 and 0 ne {
//true .copyfontdict
dup /CharStrings 2 copy get dup length dict .copydict
% stack: font-res fontname font font /CharStrings CharStringsdict
5 index /FirstChar get 97 .max
6 index /LastChar get 122 .min 1 exch {
% Stack: font-res fontname font' font' /CharStrings charstrings code
% Note that this only remaps a-z, not accented characters.
6 index /Widths oget 1 index 8 index /FirstChar get sub oget
1 string dup 0 5 -1 roll put
% Stack: font-res font' font' /CharStrings charstrings code
% width (x)
2 index exch dup cvn exch
dup 0 2 copy get 32 sub put 4 -1 roll {
% Stack: operand (X) width
0 setcharwidth exch pop
currentfont /FontMatrix get matrix invertmatrix concat
0.7 dup scale 0 0 moveto show
} /exec cvx 4 packedarray cvx put
} for put
} if
dup /FontName get 2 index ne {
//true .copyfontdict
2 copy exch /FontName exch put
} if
exch pop .completefont
} {
% No descriptor available, use the default algorithm.
pdffindcachedfont
} ifelse
} ifelse
exch pop
} bdef
% ---------------- Type 1 fonts ---------------- %
/buildType1 % <Type1-font-resource> buildType1 <font>
{ dup /BaseFont get pdffindfont
} bdef
% Read an embedded Type 1 font.
/readfontfilter { % <proc> readfontfilter <filter>
0 () /SubFileDecode filter
} bdef
% Adobe Acrobat doesn't skip space characters after eexec
/eexec_pdf_param_dict mark
.eexec_param_dict {} forall
/keep_spaces //true
.dicttomark readonly def
% When Type 1 font reading procedure is executing, a copy of this dictionary is current.
% topFontDict allows us to *attempt* to handle the case where a Type 1 font definition
% does not start by creating it's own dictionary (i.e. a number of the keys end up in
% the currentdict rather than the font dictionary).
% The whole type1 stream can be executed directly. There's no need to process
% Length1, 2, 3 keys.
/readtype1dict 10 dict dup begin
/prev_definefont /definefont load def
/definefont {
% if a font defines any keys outside it's own dictionary,
% this attempts to cope by copying them into the font dictionary
[
/FontType % in PLRM order
/FontMatrix
/FontName
/FontInfo
/WMode
/Encoding
/FontBBox
/UniqueID
/XUID
/PaintType
/StrokeWidth
/Metrics
/Metrics2
/CDevProc
/CharStrings
/Private
/WeightVector
]
{
2 copy known
{pop}
{
dup where
{
1 index get
2 index
3 1 roll put
dup /MisplacedKey 0 put
}
{pop} ifelse
} ifelse
} forall
dup /MisplacedKey known {
( **** Warning: Type 1 font defines some required keys outside the font dictionary.\n)
pdfformatwarning
} if
dup /CharStrings get /.notdef known not {
dup /CharStrings get
/.notdef <9E35CED7FFD3622F09> put
( **** Warning: Type 1 font has no /.notdef entry in /CharString dictionary.\n)
pdfformatwarning
} if
dup /UniqueID .knownget {
dup dup 0 lt exch 16#ffffff gt or {
( **** Warning: Ignoring invalid /UniqueID = ) exch =string cvs
concatstrings (\n) concatstrings pdfformatwarning
dup /UniqueID undef
} {
pop
} ifelse
} if
prev_definefont
} bdef
/undef_proc_warning {
/Repaired //true store % flag that we have warnings
UndefProcList exch 2 copy .knownget { 1 add } { 1 } ifelse put
} bdef
/missing-type1-procs 6 dict begin
/-| { string currentfile exch readstring pop /-| //undef_proc_warning exec } executeonly bdef
/RD { string currentfile exch readstring pop /RD //undef_proc_warning exec } executeonly bdef
/|- { noaccess def /|- //undef_proc_warning exec } executeonly bdef
/ND { noaccess def /ND //undef_proc_warning exec } executeonly bdef
/| { noaccess put /| //undef_proc_warning exec } executeonly bdef
/NP { noaccess put /NP //undef_proc_warning exec } executeonly bdef
currentdict end readonly def
/eexec {
% Assume the font dictionary is directly below the file on the stack
count 0 gt { /topFontDict 2 index cvlit store } if
//eexec_pdf_param_dict /eexecDecode filter
//missing-type1-procs begin
/userdict .systemvar begin
//systemdict begin
readtype1dictcopy begin cvx stopped
currentfile flushfile % Skip the trailer after return from eexec, bug 690701.
{ currentdict end //missing-type1-procs eq { exit } if } loop
{ stop } if
} bdef
/readonly-op-dict <<
/stringtype 0
/arraytype 0
/packedarraytype 0
/dicttype 0
>> readonly def
/readonly { % bug 689617
dup type //readonly-op-dict exch known not {
( **** Warning: Type 1 font applies operator readonly to an invalid object type.\n)
pdfformatwarning
} if
} bdef
/prev_get /get load def
/get {
dup /FontName eq {
% No warning, probably FontName is defined elsewhere; see definefont above.
.knownget not { /Missing } if
} {
dup /UniqueID eq {
% We don't want fonts to check /UniqueID and do 'restore'.
pop pop 16#FEDCBA98 % Arbitrary and invalid value
} {
prev_get
} ifelse
} ifelse
} bdef
/prev_begin /begin load def
/begin {
dup //systemdict eq { pop 0 dict } if
prev_begin
} bdef
{ /undef_proc_warning /missing-type1-procs /readonly-op-dict }
{ currentdict exch undef } forall
end readonly def
currentdict /eexec_pdf_param_dict .undef
/readtype1 { % <font-resource> <stream-dict> readtype1 <font|null>
PDFfile fileposition 3 1 roll % pos res stream
dup /PFB known exch % pos res pfb? stream
//true resolvestream % pos res pfb? file
exch {
//false /PFBDecode filter % pos res file'
} if
% Some buggy embedded fonts leave extra junk on the stack,
% so we have to make a closure that records the stack depth
% in a fail-safe way. This code also removes the mark when
% the implied cleartomark is not executed, i.e. Length3 == 0.
% Also restore dictstack depth.
%
//systemdict begin
//readtype1dict dup length 5 add dict copy begin % pos res file'
/file-position 4 -1 roll def % res file'
/stack-count count 3 sub def
1 index /BaseFont oget /savedFontName exch def
/topFontDict //null def
/readtype1dictcopy currentdict def
cvx stopped
{ currentdict /topFontDict known not { end } { exit } ifelse } loop
{ /topFontDict //null def } if
PDFfile file-position setfileposition
count stack-count sub { pop } repeat
topFontDict end end
} bdef
% ---------------- Type 3 fonts ---------------- %
/buildType3 { % <Type3-font-resource> buildType3 <font>
8 dict begin
/FontType 3 def
% If the font does not contain a Resources entry, then we use
% the resources from our current context. Page 391 of the PDF
% 1.6 spec says that the Resources dict is optional and if not
% present then we should use the Resources for the page.
% However we have a test file (687989) which uses a Type3 font
% inside a form XObject and the desired Resources are in the
% XObject dict and not in the Page dict. So we are going to
% the parent object to find resources instead of only going to
% the page dict when a font does not specify its required
% resources.
/Resources 1 index /Resources knownoget {
oforce
} {
LocalResources
} ifelse def
/FontBBox 1 index /FontBBox get cvx def
/FontMatrix 1 index /FontMatrix oget def
/CharProcs 1 index /CharProcs oget def
1 index /Widths knownoget {
/Widths exch def
/FirstChar 1 index /FirstChar oget def
/LastChar 1 index /LastChar oget def
} if
/FontName 1 index /Name knownoget not { /PDFType3Untitled } if def
/Encoding .notdefEncoding 2 index getencoding def
% We have to define BuildChar rather than BuildGlyph:
% there is no PDF equivalent of glyphshow, and we need
% the character code to access the Widths.
/BuildChar {
% Stack: font charcode
1 index begin 4 dict begin
/Font 3 -1 roll def /CharCode 1 index def
Encoding exch get CharProcs exch knownoget {
dup /Length get 0 eq {
pop
%% Detect a 0 length stream. If this occurs
%% then we won't execute d0 or d1, and so won't adjust the
%% character width. So, pretend we got a
%% null d1, just so that we can adjust using the /Widths
%% (Bug 697805)
0 0 0 0 0 0
pdfopdict /d1 get exec
}{
{ //false resolvestream
% Stack: filepos stream
% Don't let setgcolor set the color inside the BuildGlyph
% procedure, because this causes an /undefined error.
q
%% This is (currently) needed to make sure that the current dictionary, which is
%% 'nodict' because we did a gsave, is writeable. If we don't execute gput
%% to make a writeable copy then it is a no access dicitonary and the 'def'
%% below will fail. It would be nice to fix the cases of this someday, but
%% we use 'nodict'[ to store other PDF state stuff that isn't gstate, and we
%% probably always will, so it may well be more trouble than its worth.
/Dummy false gput
Font /Resources get exch pdfopdict
/BuildCharDictDepth countdictstack def
.pdfruncontext
countdictstack BuildCharDictDepth sub
{
pdfdict /.Qqwarning_issued .knownget {not}{//true} ifelse
{
(\n **** Warning: Type 3 glyph has unbalanced q/Q operators \(too many q's\)\n Output may be incorrect.\n)
pdfformatwarning
pdfdict /.Qqwarning_issued //true .forceput
} if
Q
} repeat
Q
} PDFfile fileposition 2 .execn % Keep pdfcount valid.
PDFfile exch setfileposition
} ifelse
} {
% PDF Type 3 fonts don't use .notdef
% d1 implementation adjusts the width as needed
0 0 0 0 0 0
pdfopdict /d1 get exec
} ifelse
end end
} bdef
dup currentdict Encoding .processToUnicode
currentdict end .completefont exch pop
} bdef
/.adjustcharwidth { % <wx> <wy> .adjustcharwidth <wx'> <wy'>
% Enforce the metrics, in glyph space, to the values found in the PDF Font object
% - force wy == 0 (assumed, and not stored in the PDF font)
% Even though PDF1.3-1.7 specifications state that this must be 0,
% Distiller sometimes creates Type3 fonts with non-zero wy. We set
% it to 0 since this is apparently what Acrobat Reader 4 and 5 do.
% PDF1.2 does not mention this restriction, it only says
% "see setcharwidth/ setcachedevice in the PostScript Reference".
% - get wx from the Widths array (do nothing if not present)
pop 0
/Widths where {
begin
CharCode FirstChar ge CharCode LastChar le and {
exch pop Widths CharCode FirstChar sub get exch
} if end
} if
} bdef
% ---------------- TrueType fonts ---------------- %
/TTfonts mark
/Arial /Helvetica
/Arial,Italic /Helvetica-Oblique
/Arial,Bold /Helvetica-Bold
/Arial,BoldItalic /Helvetica-BoldOblique
/CourierNew /Courier
/CourierNew,Bold /Courier-Bold
/TimesNewRoman /Times-Roman
/TimesNewRoman,Italic /Times-Italic
/TimesNewRoman,Bold /Times-Bold
/TimesNewRoman,BoldItalic /Times-BoldItalic
.dicttomark readonly def
/buildTrueType { % <TrueType-font-resource> buildTrueType <font>
dup /BaseFont oget
dup /font_name gput
1 index /FontDescriptor knownoget
{
/Flags knownoget
{
4 and 0 ne
{ //true } % symbolic
{ 1 index /Encoding oknown not} % no encoding => symbolic
ifelse
}
{//false}
ifelse
}
{//false}
ifelse
/is_symbolic gput
1 index /Encoding oknown {
StandardEncoding
3 index getencoding
} {
//null
} ifelse
/prebuilt_encoding gput
//false /.render_notdef gput % set the default
dup /Font resourcestatus dup { exch pop exch pop } if not
TTfonts 2 index known and {
dup TTfonts exch get
QUIET not {
(Substituting font ) print dup =only
( for ) print 1 index =only (.) = flush
} if
exch 3 1 roll pdffindfont
//true .copyfontdict
2 copy exch /FontName exch put
exch pop .completefont
} {
pdffindfont
} ifelse
} bdef
% Read an embedded TrueType font.
/readtruetype { % <font-resource> <stream-dict> readtruetype <font>
1 index exch
PDFfile fileposition 3 1 roll
//true resolvestream readfontfilter
% Stack: filepos fontres stream
1 index /CIDSystemInfo oknown {
1 index /CIDSystemInfo get dup type /packedarraytype eq {exec}if
3 1 roll
1 index /Subtype knownoget {
/CIDFontType2 ne {
( **** Error: Subtype of a TT CID font is not /CIDFontType2\n) pdfformaterror
1 index /Subtype /CIDFontType2 put
( Output may be incorrect.\n) pdfformaterror
} if
} {
( **** Error: Subtype of a TT CID font is missing.\n) pdfformaterror
1 index /Subtype /CIDFontType2 put
( Output may be incorrect.\n) pdfformaterror
} ifelse
1 index /BaseFont get % Use the BaseFont name for the font. Otherwise we
% would use the name table, or a manufactured name.
.loadttcidfont
% Stack: filepos fontres cidfont
} {
% filepos fontres stream
1 index /FontDescriptor oget
/Flags oget 4 and 0 ne {
//true % symbolic
} {
1 index /Encoding oknown not % no encoding => symbolic
} ifelse
2 index /Encoding oknown {
StandardEncoding
3 index getencoding
} {
//null
} ifelse
dup 4 index exch % filepos fontres stream is_symbolic Encoding fontres Encoding
/prebuilt_encoding exch put % filepos fontres stream is_symbolic Encoding
5 index /BaseFont get % Use the BaseFont name for the font. Otherwise we
% would use the name table, or a manufactured name.
.loadpdfttfont
} ifelse
exch pop
PDFfile 3 -1 roll setfileposition
% Ignore both the Encoding and the Widths.
exch pop
} bdef
% ---------------- Type 0 fonts ---------------- %
% Predefine the known CMaps, but only create them on demand.
/knownCMaps mark
/Identity-H { /Identity-H 0 makeIdentityCMap }
/Identity-V { /Identity-V 1 makeIdentityCMap }
.dicttomark def
/makeIdentityCMap { % <cmapname> <wmode> .makeIdentityCMap -
.currentglobal //true .setglobal 3 1 roll
/CIDInit /ProcSet findresource begin
12 dict begin
begincmap
/WMode exch def
/CMapName exch def
/CIDSystemInfo 3 dict dup begin
/Registry (Adobe) def
/Ordering (Identity) def
/Supplement 0 def
end def
%/CMapName (see above)
/CMapVersion 1 def
/CMapType 1 def
%WMode (see above)
% The PDF documentation says that these CMaps map CIDs
% "1 to 65,536". This is a misprint for 0 to 65,535.
1 begincodespacerange
% <0001> <00ff> <0100> <ffff>
<0000> <ffff>
endcodespacerange
1 begincidrange
% <0001> <00ff> 1 <0100> <ffff> 256
<0000> <ffff> 0
endcidrange
endcmap
CMapName currentdict /CMap defineresource
knownCMaps CMapName 2 index put
end % CMap
end % CIDInit ProcSet
exch .setglobal
} bdef
/CMap_read_dict 3 dict begin
/defineresource % <name> <dict> <cat-name> defineresource <dict>
{
pop
/.last_CMap_def 1 index store
exch pop
} bdef
/CIDSystemInfo
{
( **** Error: CMap has invalid syntax near CIDSystemInfo.\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
/CIDSystemInfo
} bdef % A work around a bug in Altona.Page_3.2002-09-27.pdf - a slash is missed.
/CMapName
{
( **** Error: CMap has no CMapName.\n\
See the comment to revision 6201 in gs/doc/ps2pdf.htm#Problems .\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
/CMap1 % arbitrary, PDF defineresource tolerates non-unique names
} bdef % A work around incorrect ToUnicode CMap generated by GS before rev. 6201.
currentdict end readonly def
% Read an embedded stream that we *hope* is a PostScript CMap. According
% to the spec, ths isn't legal, but 'Acrobat opens it'....
%
/read_CMap {
dup mark exch 0 (begincodespacerange) /SubFileDecode filter cvx exec
cleartomark
{currentdict dup /CMapType known not {end}{pop exit} ifelse} loop
/CMapType 1 def
mark exch % emulate 'begincodespacerange'
0 (endcmap) /SubFileDecode filter cvx /begincmap cvx exch 2 .execn
endcmap
currentdict end
dup /CMapName get exch
/CMap defineresource end
} bdef
% Read embedded CMap stream.
% if the <wmode> parameter is null, it indicates there is no WMode, and we
% should not add one.
% Following Acrobat we ignore everything outside
% begincodespacerange .. endcmap.
/read_CMap_stream { % <info> <wmode> <name> <stream> read_CMap <CMap>
dup 0 (begincodespacerange) /SubFileDecode filter flushfile
//CMap_read_dict begin
/CIDInit /ProcSet findresource begin
12 dict begin
4 2 roll
dup //null eq { pop } { /WMode exch def } ifelse
dup //null eq { pop } { /CIDSystemInfo exch def } ifelse
/CMapType 1 def
/.last_CMap_def currentdict def % establish binding
mark exch % emulate 'begincodespacerange'
0 (endcmap) /SubFileDecode filter cvx /begincmap cvx exch 2 .execn
endcmap
/.last_CMap_def load
{ currentdict end //CMap_read_dict eq { exit } if } loop
dup /.last_CMap_def undef
/CMap defineresource
} bdef
currentdict /CMap_read_dict undef
/buildType0 { % <Type0-font-resource> buildType0 <font>
dup /BaseFont get % FontName
1 index /Encoding oget
dup type /nametype eq {
dup /CMap resourcestatus {
pop pop /CMap findresource
} {
knownCMaps 1 index .knownget
{ exch pop exec } { /undefined signalerror } ifelse
} ifelse
} {
%% Bug #696449 Acrobat will read an embedded PostScript
%% CMap, whcih according to the spec is not valid, it needs
%% to be a PDF CMap stream. Here we check and see if it looks like a CMap
%% dictionary. If it is we proceed, if its some other kind of dictionary,
%% throw an error, if its neither, treat it as a stream and hope for the best.
dup /Type known {
dup /Type get /CMap eq {
PDFfile fileposition exch
dup /CIDSystemInfo knownoget {
<< exch { oforce } forall >>
} {
//null
} ifelse exch
dup /WMode knownoget not {//null} if exch
dup /CMapName knownoget not {/null} if exch
//true resolvestream
read_CMap_stream
exch PDFfile exch setfileposition
} {
PDFSTOPONERROR {
/buildType0 cvx /syntaxerror signalerror
} if
} ifelse
}{
PDFfile fileposition exch
//true resolvestream
read_CMap
exch PDFfile exch setfileposition
} ifelse
} ifelse % CMap
[
3 index /DescendantFonts oget { exec resourcefont } forall
] % subfonts
.composefontdict % composefont must insert FontInfo dictionary - see gs_cmap.ps .
% Stack: fontres name font
3 copy exch pop //null .processToUnicode
exch pop .completefont % Stack: fontres font
1 index /FontMatrix knownoget {
dup aload pop //true {0 0 1 0 0 1} {3 -1 roll eq and} forall {
1 index exch makefont exch /FontName get exch
exch pop .completefont
} {
pop
} ifelse
} if exch pop
} bdef
% ---------------- CIDFontType0/2 fonts ---------------- %
% Insert metrics into a CIDFont, by saving the PDF W, W2, DW, and DW2
% arrays and using a (currently very inefficient) CDevProc.
% For detail, refer "PDF Reference" 2nd ed., p314 "5.6.3 CIDFonts".
% It notes default DW is 0, but Acrobat Reader uses 1000 as default.
% If DW is 0, currentpoint does not move by default in rendering text
% horizontally, the result is unreadable. You can check it by Acrobat.
/.pdfDefaultDW 1000 def
/.pdfDefaultDW2 [ 880 -1000 ] def
/addCIDmetrics { % <CIDFont-resource> <CIDFont> addCIDmetrics <fontdict>
dup length 5 add dict .copydict
dup /FID undef
dup /UniqueID undef
dup /XUID undef
% Insert the widths into the font.
% Stack: pdfresource newfont
1 index /DW knownoget {
1 index /DW 3 -1 roll put
} {
dup /DW .pdfDefaultDW put
} ifelse
1 index /W knownoget {
//false 1 index { xcheck or } forall {
oforce_array
} if
dup 2 index /W 3 -1 roll put
.pdfMakeInternalW 1 index /.internalW 3 -1 roll put
} if
1 index /DW2 knownoget {
1 index /DW2 3 -1 roll put
} {
dup /DW2 .pdfDefaultDW2 put
} ifelse
1 index /W2 knownoget {
//false 1 index { xcheck or } forall {
oforce_array
} if
dup 2 index /W2 3 -1 roll put
.pdfMakeInternalW2 1 index /.internalW2 3 -1 roll put
} if
dup /CDevProc 1 index /CIDWProc load /exec load 3 packedarray cvx put
exch pop
} bdef
/.pdfMakeInternalMTXArray { % <mtx_array> <item_size> .pdfConvertInternalW <mtx_array'>
% convert /W or /W2 to internal expression
%
% mtx_array: original /W or /W2 array
% item_size: number of metrics values per CID
%
% for detail of the metrics list format in PDF,
% refer PDF Ref. p.317 "Glyph Metrics in CIDFonts".
%
% format of single entry in internal expression
%
% [
% [cid_begin cid_end]
% value_is_varied (bool)
% [ [values for cid_begin...]
% [values for cid_begin + 1]
% ... ]
% ]
%
7 dict
begin
/itemSize exch def
/M exch def % original /W or /W2
/Msize M length def
/Mi { M i get } def % W[i]
/Mi1 { M i 1 add get } def % W[i + 1]
/putMTXEntry <<
/arraytype {
[
[Mi Mi Mi1 length itemSize idiv add 1 sub]
//true
[
0 itemSize Mi1 length 1 sub {
[ exch 1 1 index itemSize add 1 sub { Mi1 exch get } for ]
} for
]
]
/i i 2 add def
}
/integertype {
[
[Mi Mi1]
//false
[[ i 2 add 1 i 1 add itemSize add { M exch get } for ]]
]
/i i 2 add itemSize add def
}
>> def
/i 0 def
[ { putMTXEntry Mi1 type get exec i Msize ge { exit } if } loop ]
end
} def
/.pdfMakeInternalW { dup length 0 gt { oforce_recursive 1 .pdfMakeInternalMTXArray } if } def
/.pdfMakeInternalW2 { dup length 0 gt { oforce_recursive 3 .pdfMakeInternalMTXArray } if } def
/.pdfGetMTXByCID { % <internalMTXArray> <cid>
% .pdfGetMTXByCID
% { <MTXEntry> true | false }
% get values for given CID from internal format of /W or /W2
exch
{
{
dup 0 get {} forall % Stack: <cid> <entry> <cid_0> <cid_1>
3 index lt { pop pop //false exit } if
2 index exch sub dup 0 lt { pop pop //false exit } if
1 index 1 get not { pop 0 } if
exch 2 get exch get //true exit
} loop
{ exit } if
} forall
dup type /arraytype eq { exch pop //true } { pop //false } ifelse
} def
% Apply the [D]W[2] metrics to a character before displaying.
/CIDWProc { % <w0x> <w0y> <llx> <lly> <urx> <ury>
% <w1x> <w1y> <vx> <vy> <cid> <font> CIDWproc
% <w0x'> ... <vy'>
begin % push <font> to currentdict
% <w1x> <w1y> <vx> <vy> won't be used and replaced, discard now
5 1 roll pop pop pop pop
% get FontMatrix that applies to this CID
% (needs to convert [D]W[2] values to glyph space)
currentdict /FontMatrix get
% if the currentfont is a CIDFontType 0 CIDFont,
% we need FDArray font's FontMatrix too
FontType 9 eq {
currentdict 2 index .type9mapcid
% <w0x> <w0y> <llx> <lly> <urx> <ury> <cid> <FontMatrix> (charstring) <FDArray#>
exch pop currentdict /FDArray get exch get /FontMatrix get
% <w0x> <w0y> <llx> <lly> <urx> <ury> <cid> <FontMatrix> <FontMatrix2>
matrix concatmatrix
} if
% preserve this FontMatrix at bottom of the stack
8 1 roll
% Stack: <FontMatrix> <w0x> <w0y> <llx> <lly> <urx> <ury> <cid>
{
currentdict /DW .knownget not { % no DW
.pdfDefaultDW exit % replace <w0x> by defaultDW
} if
currentdict /.internalW .knownget not { % no W
exit % use already-stacked DW
} if
dup length 0 eq { % W is null array
pop % discard unusable W
exit % use already-stacked DW
} if
% W is finite array, try to get W_cid
2 index .pdfGetMTXByCID { % got W, discard DW
exch pop {} forall
exit
} if
exit
} loop
0 % <w0y'>
% Stack: <FontMatrix> <w0x> <w0y> <llx> <lly> <urx> <ury> <cid> <w0x'> <w0y'>
9 -2 roll pop pop % discard <w0x> <w0y>
7 2 roll % put <w0x'> <w0y'>
% Stack: <FontMatrix> <w0x'> <w0y'> <llx> <lly> <urx> <ury> <cid>
0 % <w1x'>
exch % put <w1x'>
% Stack: <FontMatrix> <w0x'> <w0y'> <llx> <lly> <urx> <ury> <w1x'> <cid>
{
currentdict /DW2 .knownget not { % no DW2, use defaultDW2
.pdfDefaultDW2 exit
} if
currentdict /.internalW2 .knownget not { % has DW2, no W2
exit % use already-stacked DW2
} if
dup length 0 eq { % W2 is null array
pop % discard unusable W2
exit % use already-stacked DW2
} if
2 index .pdfGetMTXByCID { % got W2_cid, discard DW2
exch pop
exit
} if
% could not get W2_cid
exit
} loop
exch pop % discard <cid>
% Stack: <FontMatrix> <w0x'> <w0y'> <llx> <lly> <urx> <ury>
% <w1x'> { [<vy'> <w1y'>] | [<w1y'> <vx'> <vy'>] }
dup length 2 eq { % this is DW2
aload pop
exch 8 index 2 div % <vx'> = <w0x'> / 2
exch
} { % assume W2
aload pop
} ifelse
% Stack: <FontMatrix> <w0x'> <w0y'> <llx> <lly> <urx> <ury> <w1x'> <w1y'> <vx'> <vy'>
% now, convert each metrics valude (1000th of text space) to glyph space
10 -2 roll
% Stack: <FontMatrix> <llx> <lly> <urx> <ury> <w1x'> <w1y'> <vx'> <vy'> <w0x'> <w0y'>
3 {
10 index idtransform exch 1000 div exch 1000 div
6 2 roll
} repeat
10 2 roll
% Stack: <FontMatrix> <w0x'> <w0y'> <llx> <lly> <urx> <ury> <w1x'> <w1y'> <vx'> <vy'>
11 -1 roll pop
% Stack: <w0x'> <w0y'> <llx> <lly> <urx> <ury> <w1x'> <w1y'> <vx'> <vy'>
end % recover currentdict
} def
% <string> <match> tailmatch ==> <pre> true
% ==> <string> false
/tailmatch {
2 copy length 1 index length .min
dup 2 index length exch sub exch getinterval
1 index eq {
length 1 index length exch sub
0 exch getinterval //true
} {
pop //false
} ifelse
} bind def
/makeboldfont {
16 dict begin
/strokewidth exch def
/basecidfont exch def
/FontMatrix [ 1 0 0 1 0 0 ] def
/CIDFontName /.boldfont def
/CIDFontType 1 def
/basefont-H /.basefont-H /Identity-H [ basecidfont ] composefont def
/basefont-V /.basefont-V /Identity-V [ basecidfont ] composefont def
/CIDSystemInfo dup basecidfont exch get def
/FontBBox [ basecidfont /FontBBox get cvx exec
4 2 roll basecidfont /FontMatrix get transform
4 2 roll basecidfont /FontMatrix get transform
] def
/tmpstr 2 string def
/BuildGlyph {
gsave
exch begin
dup 256 idiv tmpstr exch 0 exch put
256 mod tmpstr exch 1 exch put
rootfont /WMode known { rootfont /WMode get 1 eq } { //false } ifelse
{ basefont-V } { basefont-H } ifelse setfont
strokewidth setlinewidth
1 setlinejoin
newpath
0 0 moveto tmpstr //false charpath stroke
0 0 moveto tmpstr show
currentpoint setcharwidth
end
grestore
} bind def
currentdict
end
dup /CIDFontName get exch /CIDFont defineresource
} bind def
% <CIDFont-resource> <CIDFontName> findCIDFont <CIDFont-resource> <font>
% CIDFont-resource is not modified.
/findCIDFont {
{
dup /CIDFont resourcestatus {
pop pop /CIDFont findresource
exit
} if
.remove_font_name_prefix
dup dup length string cvs
(,Bold) tailmatch {
exch pop
% If we're substituting a standard weight font for a
% "Light,Bold" font, don't artificially bolden further
dup (Light) tailmatch
{
pop cvn findCIDFont dup /FontName .knownget
{
(Light) tailmatch exch pop
}
{
//true
} ifelse
{
0.03 makeboldfont
} if
}
{
pop
cvn findCIDFont 0.03 makeboldfont
} ifelse
exit
} if
(,Italic) tailmatch {
exch pop
cvn findCIDFont
[ 1 0 0.3 1 0 0 ] makefont
exit
} if
(,BoldItalic) tailmatch {
exch pop
% see above
dup (Light) tailmatch
{
pop cvn findCIDFont dup /FontName .knownget
{
(Light) tailmatch exch pop
}
{
//true
} ifelse
{
0.03 makeboldfont
} if
}
{
pop
cvn findCIDFont 0.03 makeboldfont
} ifelse
[ 1 0 0.3 1 0 0 ] makefont
exit
} if
QUIET not {
(Can't find CID font ") print dup =string cvs print (".) = flush
} if
pop
1 index /CIDSystemInfo oget begin Registry (-) Ordering end
concatstrings concatstrings
cvn
QUIET not {
(Attempting to substitute CID font ) print dup ==only
( for ) print 1 index ==only (, see doc/Use.htm#CIDFontSubstitution.) = flush
} if
exch pop
dup /CIDFont resourcestatus {
pop pop /CIDFont { findresource } stopped
{pop}{exit} ifelse
} if
QUIET not {
(The substitute CID font ") print dup =string cvs print
(" is not provided either. ) print
} if
PDFNOCIDFALLBACK {
PDFSTOPONERROR {
(Will exit with error.) = flush
}
{
(Will attempt to continue, but content may be missing.) = flush
} ifelse
exit
} if
QUIET not {
(attempting to use fallback CIDFont.) print
(See doc/Use.htm#CIDFontSubstitution.) = flush
} if
PDFNOCIDFALLBACK not {
% This previously worked by loading the substitute font, and using that
% as a "template" to create a new CIDFont dictionary with the CIDSystemInfo
% dict appropriate for the requested font.
% This, however, caused problems with the CIDMap and thus broke pdfwrite.
% Hence, we now modify the CIDFont resource .map dictionary on the fly
% so it includes an appropriate mapping, so the subsitute font is loaded
% from the beginning with the correct ordering and supplement settings.
/CIDFont /Category findresource /.map get dup /CIDFallBack .knownget {
dup type /dicttype eq {
dup /FileType get /TrueType eq {
currentglobal
4 1 roll
dup gcheck setglobal
dup length dict copy dup
6 index /CIDSystemInfo oget dup /Ordering oget exch /Supplement get
% we have to copy the string, for VM correctness
exch dup length string copy exch 2 array astore
/CSI exch put 2 index exch .forceput
exch setglobal
{
% This *should* not execute arbitrary Postscript, so we ought to
% be safe running in a stopped context, in knowledge we know how
% to clean up afterwards - this would not be safe if CIDFallBack
% were a "real" CIDFont.
/CIDFont findresource
}
% if the above fails, try just using the CIDFallBack font directly
stopped
{
pop
% First, since it didn't work, remove the entry from the CIDFont category
% .map dictionary.
currentglobal exch
/CIDFont /Category findresource /.map get
dup gcheck setglobal
exch undef
setglobal
(Warning: falling back to Identity ordering\n) print flush
/CIDFallBack /CIDFont findresource
} if
exit
} if
} if
} if
pop pop pop
/CIDFallBack
QUIET not {
(The fallback CID font ") print dup =string cvs print
(" is not provided. ) print
( Finally attempting to use ArtifexBullet.\n) print flush
}if
% We'll just use Identity for this, we have only one glyph anyway.
/ArtifexBullet /CIDFont resourcestatus {
pop pop pop
/ArtifexBullet /CIDFont findresource
exit
}
{
pop /ArtifexBullet
} ifelse
QUIET not {
(The CID font ") print dup =string cvs print
(" is not provided. ) print
PDFSTOPONERROR
{
(Will exit with error.) = flush
}
{
(Will continue, but content may be missing.) = flush
} ifelse
} if
} if
/findresource cvx /undefined signalerror
} loop
} bdef
/buildCIDType0 { % <CIDFontType0-font-resource> buildCIDType0 <font>
dup /BaseFont get findCIDFont exch pop
} bdef
/buildCIDType2 { % <CIDFontType2-font-resource> buildCIDType2 <font>
dup /BaseFont get findCIDFont exch pop
} bdef
/processCIDToGIDMap { % <fontres> <cidfont> processCIDToGIDMap <fontres> <cidfont>
1 index /CIDToGIDMap knownoget {
PDFfile fileposition 4 1 roll
dup /Identity eq {
pop
} {
//true resolvestream
% Stack: filepos fontres font mapstream
[
{ counttomark 1 add index 32768 string readstring not {
counttomark 1 eq {
exch pop dup length
} {
] dup 0 exch { length add } forall
} ifelse
exit
} if
} loop
2 idiv
% Stack: filepos fontres font mapstream array/string CIDCount
dup 0 ne {
3 index exch /CIDCount exch put
exch closefile exch
dup /CIDMap 4 -1 roll put
}{
% If CIDCount is zero, ignore it
pop pop closefile
}ifelse
} ifelse
3 2 roll PDFfile exch setfileposition
} if
} bdef
% Adjust a CIDFontType0 DW[2] in the font resource.
/adjustCIDType0 { % <font-resource> <font> adjustfont <font'>
dup /FontType get 1 eq {
( **** Error: Font resource has a wrong /Subtype.\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
adjustfont
} {
addCIDmetrics
dup /CIDFontName get exch /CIDFont defineresource
} ifelse
} bind def
% Adjust a CIDFontType2 DW[2] and CIDToGIDMap in the font resource.
/adjustCIDType2 { % <font-resource> <font> adjustfont <font'>
dup /FontType get 1 eq {
( **** Error: Font resource has a wrong /Subtype.\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
adjustfont
} {
addCIDmetrics
dup /CIDFontType get 2 eq { % OpenType CFF font converts to CIDFontType 0
processCIDToGIDMap % that ignores CIDMap.
} if
dup /CIDFontName get exch /CIDFont defineresource
} ifelse
} bind def
% ---------------- Other embedded fonts ---------------- %
% Read an embedded compressed font.
/readType1C { % <font-resource> <stream-dict> readType1C <font>
1 index exch
PDFfile fileposition 3 1 roll
dup //true resolvestream dup readfontfilter
% Stack: pos resource streamdict stream filter
3 index /FontDescriptor oget /FontName oget
1 index
/FontSetInit /ProcSet findresource begin //true //false ReadData
%% We need to be careful not to corrupt the stack if something went wrong.
%% Previously, if the dict was length 0 (an error occured) we would end up
%% unable to recover the stack in the calling procedure.
%% Bug #695819.
dup length 0 ne {
{ exch pop exit } forall
7 1 roll
}{
/invalidfont signalerror
} ifelse
closefile closefile pop
PDFfile 3 -1 roll setfileposition
pop pop
} bdef
% Read an embedded CFF CIDFont.
/readCIDFontType0C { % <font-resource> <stream-dict> readCIDFontType0C <font>
PDFfile fileposition 3 1 roll
dup //true resolvestream dup readfontfilter
% Stack: pos resource streamdict stream filter
3 index /FontDescriptor oget /FontName oget
1 index
/FontSetInit /ProcSet findresource begin //true //true ReadData pop
closefile closefile pop
PDFfile 3 -1 roll setfileposition
% Some broken Adobe software produces PDF files in which
% the FontName of the CFF font and the FontName in the
% FontDescriptor don't match the BaseFont in the font.
% Use the FontName, rather than the BaseFont, here.
dup /FontDescriptor oget /FontName oget /CIDFont findresource
addCIDmetrics dup /CIDFontName get exch /CIDFont defineresource
} bdef
% Read an embedded OpenType font.
/readOTTOfont { % <font-resource> <stream-dict> readOTTOfont <font>
1 index exch % res res strdict
PDFfile fileposition 3 1 roll % res pos res strdict
dup //true resolvestream % res pos res strdict stream
dup readfontfilter % res pos res strdict stream filter
3 index /FontDescriptor oget
/FontName oget % res pos res strdict stream filter /name
1 index .init_otto_font_file % res pos res strdict stream filter /name filter'
//true
6 index /CIDSystemInfo known % res pos res strdict stream filter /name filter' bool bool
ReadData % res pos res strdict stream filter fontset
{ exch pop exit } forall % res pos res strdict stream filter font
dup /FontType get 9 eq {
% OpenType may contain simple CFF font, which is accesed as a CIDFont by PDF.
% The font is converted to Type 9 CIDFont resource, which ignores CIDMap attribute.
% The following code just shuffles GlyphDirectory to the same effect.
4 index /CIDToGIDMap knownoget {
dup type /dicttype eq {
1 index /GlyphDirectory get exch % res pos res strdict stream filter font dir c2g
//true resolvestream % res pos res strdict stream filter font dir c2g_file
256 dict begin
0 2 index 0 get def % copy .notdef
0 1 16#7fffffff {
1 index read not { pop exit } if % res pos res strdict stream filter font dir c2g_file cid hi
256 mul % res pos res strdict stream filter font dir c2g_file cid hi
2 index read not { pop pop exit } if % res pos res strdict stream filter font dir c2g_file cid hi lo
add % res pos res strdict stream filter font dir c2g_file cid gid
dup 0 ne {
dup 4 index length lt {
3 index exch get % res pos res strdict stream filter font dir c2g_file cid charstr
def % res pos res strdict stream filter font dir c2g_file
} {
pop pop
} ifelse
} {
pop pop
} ifelse
} for
closefile pop % res pos res strdict stream filter font
dup length dict copy % res pos res strdict stream filter font'
dup /GlyphDirectory currentdict put % res pos res strdict stream filter font'
end
dup /GlyphDirectory get 0 exch {
pop .max
} forall
1 index exch /CIDCount exch 1 add put
} {
pop
} ifelse
} if
} if
7 1 roll % font res pos res strdict stream filter
closefile closefile pop pop % font res pos
PDFfile exch setfileposition % font res
pop % font
} bdef
% ---------------- Font lookup ---------------- %
% Some PDF files mis-identify font type of the embedded font streams or
% include raw PFB font streams. Length1, Length2, Length3 may be wrong or
% missing. Adobe Acrobat corrects these errors transparently to the user.
%
% We ignore the font type keys and recognize the font type by the 1st 4 bytes
% of the font stream. The PFB stream is recognized by the 1st 2 bytes.
/fonttypeprocs mark % <font-resource> -proc- <font>
/Type0 //buildType0
/Type1 //buildType1
/MMType1 //buildType1
/Type3 //buildType3
/TrueType //buildTrueType
/CIDFontType0 //buildCIDType0
/CIDFontType2 //buildCIDType2
.dicttomark readonly def
/adjustfonttypes mark
/Type1 //adjustfont
/MMType1 //adjustfont
/TrueType //adjustfont
/CIDFontType0 //adjustCIDType0
/CIDFontType2 //adjustCIDType2
.dicttomark readonly def
% Bind a proc and define n names
% /name ... /name {proc} n bndef -
/bndef
{ exch bind exch
{ dup 3 1 roll def } repeat
pop
} bdef
% <res> run-fonttypeproc <font>
/run-fonttypeproc {
dup /Subtype knownoget not { 0 } if % res /subtype
//fonttypeprocs 1 index known not {
( **** Error: Font /Subtype attribute is wrong or missing, /Type1 assumed.\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
pop /Type1
2 copy /Subtype exch put
} if
//fonttypeprocs exch get exec
} bdef
% Prototype for all procedures: <res> <desc> <stream> foo <font>
/font_tag_dict 13 dict begin
% When the font stream is absent or cannot be read we load the font by the name.
/no_stream
{ pop pop
run-fonttypeproc
} bdef
/bad_stream
{ ( **** Error: Error reading font stream, attempting to load the font using its name\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
//no_stream exec
} bdef
<8001> % PFB
{ dup /PFB //true put
exch pop readtype1
} bdef
(%!PS) (%!Fo) % Type1
{ exch pop readtype1
} 2 bndef
<01000401> <01000402> <01000403> <01000404> % Type 1C
<01000C02> <01000C03>
{ exch pop
1 index /Subtype knownoget dup { pop /CIDFontType0 eq } if {
readCIDFontType0C
} {
readType1C
} ifelse
} 6 bndef
<00010000> (true) (typ1) (ttcf) % TrueType OpenType
{ exch pop readtruetype
} 4 bndef
(OTTO)
{ exch pop
readOTTOfont
} bdef
currentdict end readonly def
currentdict /bndef undef
% Used to create a hash for the XUID, ths combines the input PDF file name and the
% object number (currently the object number of the FontDescriptor). NB we *must*
% use an object number, as otherwise all fonts will have the same
% XUID and Ghostscript will think they are the same font. Ths routine must not
% be used unless we have an object number which is believed to be uniqe to
% a particular font instance.
/.CRCHashFilenameAndObject % object_number (filename) CRCHasFilename integer
{
dup % object_number (filename) (filename)
length % object_number (filename) length
0 exch % object_number (filename) hash length
1 sub % object_number (filename) hash length-1
0 1 3 -1 roll % object_number (filename) hash 0 1 length-1
{ % object_number (filename) hash index
2 index exch get % object_number (filename) hash char
exch % object_number (filename) char hash
dup 16#F8000000 and % object_number (filename) char hash top5bits
-27 bitshift % object_number (filename) char hash top5>>27
exch 5 bitshift % object_number (filename) char top5>>27 hash<<5
16#7FFFFFFF and
xor % object_number (filename) char CRC<hash>
xor % object_number (filename) newhash
} for
exch pop % object_number newhash
dup 16#F8000000 and % object_number newhash top5bits
-27 bitshift % object_number newhash top5>>27
exch 5 bitshift % object_number top5>>27 newhash<<5
16#7FFFFFFF and
xor % object_number CRC<newhash>
xor % final hashed value
}bind def
% Either patch or create a new XUID based on the existing
% XUID or UniqueID and incorporating the PDF object number
% so we get an XUID we can use to improve cache efficiency
% in multipage documents.
/patch_font_XUID % <font dict> <patch> patch_font_XUID <font dict'>
{
dup //null eq
{pop}
{
pdfdict /InputPDFFileName .knownget {.CRCHashFilenameAndObject} if
exch dup /.OrigUniqueIDXUID .knownget not
{
dup /XUID .knownget not
{
dup /UniqueID .knownget
{1 array astore}{ [] } ifelse
} if
} if
dup //null eq
{
pop exch pop
}
{
[ 1000000 3 -1 roll 4 index exch {exch} forall ]
exch //true .copyfontdict
dup 3 -1 roll /XUID exch put
exch pop
.completefont
} ifelse
} ifelse
} bind def
/resourcefont % <font-resource> resourcefont <font>
{
dup /PSFont .knownget dup {
pop /FID knownoget dup { pop type /fonttype eq } if
} if {
/PSFont get
} {
dup /Subtype get /Type0 eq {
% if the font was defined in-line, we won't have a object number
dup /.gs.pdfobj# .knownget not { //null } if
} {
dup /FontDescriptor knownoget {
% if the font was defined in-line, we won't have a object number
dup /.gs.pdfobj# .knownget not { //null }if
dup //null eq {
exch pop
}{
exch dup /FontFile knownoget not {
dup /FontFile2 knownoget not {
dup /FontFile3 knownoget not {
pop pop //null
} {pop pop}ifelse
} {pop pop}ifelse
}{pop pop}ifelse
}ifelse
}{
//null
} ifelse
} ifelse
3 1 roll
% In the event we have a Type 0 dictionary with a spurious
% FontDescriptor object, remove it here to prevent confusion
% later on.
% Bug 691589
dup /Subtype get /Type0 eq 1 index /FontDescriptor known and
{
dup /FontDescriptor undef
}if
dup /CIDSystemInfo .knownget
{
oforce_recursive
1 index exch /CIDSystemInfo exch put
} if
dup dup /FontDescriptor knownoget {
% font-res font-res font-desc
% The same font descriptor can be reused in a CID and non-CID contexts.
% Store CID and non-CID fonts under different keys. Bug 689301
1 index /Subtype knownoget dup {
pop dup /CIDFontType0 eq exch /CIDFontType2 eq or
} if { /CIDFontObject } { /FontObject } ifelse
% font-res font-res font-desc /key
2 index 1 index .knownget {
4 1 roll pop pop pop % font-res obj
} {
4 1 roll % /key font-res font-res font-desc
dup /FontFile knownoget not {
dup /FontFile2 knownoget not {
dup /FontFile3 knownoget not {
//null
} if
} if
} if
% /key res res desc stream
dup //null ne {
PDFfile fileposition
mark {
2 index //true resolvestream dup
4 string readstring pop
exch closefile
} stopped {
cleartomark /bad_stream
} {
exch pop
} ifelse
PDFfile 3 -1 roll setfileposition
dup length 4 lt { pop /bad_stream } if
} {
/no_stream
} ifelse
% /key res res desc stream tag
//font_tag_dict 1 index known not {
dup 0 2 getinterval <8001> eq {
0 2 getinterval % /key res res desc stream pfb_tag
} {
(12345678>\n) dup /ASCIIHexEncode filter dup 4 -1 roll writestring closefile
( **** Error: unrecognized font file starts with <) exch concatstrings
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
/no_stream % /key res res desc stream unknown_tag
} ifelse
} if
//font_tag_dict exch get % /key res res desc stream {proc}
{ stopped } 0 get % /key res res desc stream {proc} --stopped--
count % /key res res desc stream {proc} --stopped-- #
countdictstack % /key res res desc stream {proc} --stopped-- # ##
PDFfile fileposition % /key res res desc stream {proc} --stopped-- # ## ###
5 array astore cvx % /key res res desc stream {{proc} --stopped-- # ## ###}
exec
4 -1 roll {
PDFSTOPONERROR not {
PDFfile exch setfileposition
countdictstack exch sub 0 .max { end } repeat
count 4 add exch sub 0 .max { pop } repeat
//null
} {
/resourcefont cvx /undefinederror signalerror
} ifelse
} {
PDFfile exch setfileposition
countdictstack exch sub 0 .max { end } repeat
count 3 sub exch sub 0 .max { pop } repeat
} ifelse
dup //null eq {
PDFSTOPONERROR not {
pop
( **** Error: can't process embedded font stream,\n attempting to load the font using its name.\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
dup run-fonttypeproc % /key res font
} {
/resourcefont cvx /undefinederror signalerror
} ifelse
} if
1 index % /key res font res
4 -1 roll 2 index % res font desc /key font
put % Save pointer to the font.
} ifelse
} {
run-fonttypeproc
} ifelse
% Stack: font-res font
1 index exch
1 index /Subtype get
//adjustfonttypes exch .knownget { exec } { exch pop } ifelse
4 -1 roll patch_font_XUID
dup 3 1 roll /PSFont exch put
} ifelse
dup checkGlyphNames2Unicode
} bdef
currentdict /font_tag_dict .undef
currentdict /fonttypeprocs .undef
currentdict /adjustfonttypes .undef
drawopdict begin
/d0 {
currentcolor currentcolorspace .swapcolors setcolorspace setcolor .swapcolors
.adjustcharwidth setcharwidth
} bdef
/d1 {
2 copy % ... llx lly urx ury | urx ury
0 ne exch 0 ne % ... llx lly urx ury | ury!=0 urx!=0
3 index 6 index eq and % ... llx lly urx ury | ury!=0 (urx!=0 && llx==urx)
exch 2 index 5 index eq and or { % ... llx lly urx ury | (urx!=0 && llx==urx) || (ury!=0 && lly==ury)
% The bounding box is empty and likely incorrect. Don't cache.
pop pop pop pop
//d0 exec
} {
6 -2 roll .adjustcharwidth 6 2 roll setcachedevice
} ifelse
} bdef
/Tf {
1 index Page /Font rget {
dup type /dicttype eq {
resourcefont exch
Tf pop
}
{
PDFSTOPONERROR
{
/typecheck cvx signalerror
}
{
% Bug 689450
type
( **** Error: Tf refers to a resource key with an invalid value type: ) pdfformaterror
.namestring pdfformaterror
(. Assuming resource key: ) pdfformaterror
1 index .namestring pdfformaterror
( is a font name.\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
Tf
} ifelse
}ifelse
}
{
PDFSTOPONERROR
{
pop /undefined cvx signalerror
}
{
% Bug 689037
( **** Error: Tf refers to an unknown resource name: ) pdfformaterror
1 index .namestring pdfformaterror
( Assuming it's a font name.\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
Tf
} ifelse
} ifelse
} bdef
end
end % pdfdict
end % GS_PDF_ProcSet
.setglobal
|