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% Copyright (C) 2001-2019 Artifex Software, Inc.
% All Rights Reserved.
%
% This software is provided AS-IS with no warranty, either express or
% implied.
%
% This software is distributed under license and may not be copied,
% modified or distributed except as expressly authorized under the terms
% of the license contained in the file LICENSE in this distribution.
%
% Refer to licensing information at http://www.artifex.com or contact
% Artifex Software, Inc., 1305 Grant Avenue - Suite 200, Novato,
% CA 94945, U.S.A., +1(415)492-9861, for further information.
%
% 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
/GS_PDF_ProcSet load begin % from userdict at this point
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
} bind executeonly def
/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
} bind executeonly def
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 executeonly 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 executeonly 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
} bind executeonly def
% 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
} bind executeonly def
/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
} bind executeonly def
% 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
} bind executeonly def
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
} bind executeonly def
/CIDSystemInfo
{
( **** Warning: ToUnicode CMap has invalid syntax near CIDSystemInfo.\n) pdfformatwarning
/CIDSystemInfo
} bind executeonly def % 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
} bind executeonly def % 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
} bind executeonly def
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 executeonly 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 executeonly 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
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
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 executeonly def
/.DoToUnicode?
{
/IgnoreToUnicode where
{/IgnoreToUnicode get not}
{//true} ifelse
} bind executeonly 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
} executeonly 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) =
} executeonly if
} executeonly if
} executeonly 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
} executeonly
{pop pop pop}
ifelse
} bind executeonly odef
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 executeonly 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 executeonly 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 executeonly 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 exec 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
} bind executeonly def
% ---------------- Type 1 fonts ---------------- %
/buildType1 % <Type1-font-resource> buildType1 <font>
{ dup /BaseFont get pdffindfont
} bind executeonly def
% Read an embedded Type 1 font.
/readfontfilter { % <proc> readfontfilter <filter>
0 () /SubFileDecode filter
} bind executeonly def
% 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
} bind executeonly def
/undef_proc_warning {
/Repaired //true store % flag that we have warnings
UndefProcList exch 2 copy .knownget { 1 add } { 1 } ifelse put
} bind executeonly def
/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
} bind executeonly def
/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
} bind executeonly def
/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
} bind executeonly def
/prev_begin /begin load def
/begin {
dup //systemdict eq { pop 0 dict } if
prev_begin
} bind executeonly def
{ /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
} bind executeonly def
% ---------------- 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
1 index /FirstChar known 2 index /LastChar known and {
/FirstChar 1 index /FirstChar oget def
/LastChar 1 index /LastChar oget def
} {
( **** Error: Requireed entry FirstChar or LastChar is missing from Font.\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
/FirstChar 0 def
/LastChar Widths length def
}ifelse
} 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
} executeonly if
Q
} executeonly repeat
Q
} executeonly PDFfile fileposition 2 .execn % Keep pdfcount valid.
PDFfile exch setfileposition
} executeonly ifelse
} executeonly
{
% 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
} executeonly bdef
dup currentdict Encoding .processToUnicode
currentdict end .completefont exch pop
} bind executeonly odef
/.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
} bind executeonly def
% ---------------- 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
} bind executeonly def
% 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
dup /Registry known not {
( **** Warning: a CIDFont's CIDSystemInfo is missing the required Registry entry\n) pdfformatwarning
dup /Registry (Adobe) put
} if
dup /Ordering known not {
( **** Warning: a CIDFont's CIDSystemInfo is missing the required Ordering entry\n) pdfformatwarning
dup /Ordering (Identity) put
} if
dup /Supplement known not {
( **** Warning: a CIDFont's CIDSystemInfo is missing the required Supplement entry\n) pdfformatwarning
dup /Supplement 0 put
} 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
} bind executeonly def
% ---------------- 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
} bind executeonly def
/CMap_read_dict 3 dict begin
/defineresource % <name> <dict> <cat-name> defineresource <dict>
{
pop
/.last_CMap_def 1 index store
exch pop
} bind executeonly def
/CIDSystemInfo
{
( **** Error: CMap has invalid syntax near CIDSystemInfo.\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
/CIDSystemInfo
} bind executeonly def % 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
} bind executeonly def % 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
} bind executeonly def
% 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
/o.endmapvalue /.endmapvalue load def
/.endmapvalue
{
dup 65535 gt
{
( **** Warning: CMap: CID out of valid range (0-65535).\n) pdfformatwarning
pop 65535
} if
o.endmapvalue
} bind def
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
currentdict /o.endmapvalue undef
endcmap
/.last_CMap_def load
{ currentdict end //CMap_read_dict eq { exit } if } loop
dup /.last_CMap_def undef
/CMap defineresource
} bind executeonly def
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
} bind executeonly def
% ---------------- 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
} bind executeonly def
/.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
} executeonly def
/.pdfMakeInternalW { dup length 0 gt { oforce_recursive 1 .pdfMakeInternalMTXArray } if } executeonly def
/.pdfMakeInternalW2 { dup length 0 gt { oforce_recursive 3 .pdfMakeInternalMTXArray } if } executeonly 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
} executeonly 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
} bind executeonly 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 executeonly 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 executeonly def
% <CIDFont-resource> <CIDFontName> findCIDFont <CIDFont-resource> <font>
% CIDFont-resource is not modified.
/findCIDFont {
{
dup /CIDFont resourcestatus {
pop pop dup /CIDFont findresource
dup /Path known
1 index /ResourcePath known or
{ exch pop exit }
{ pop dup /CIDFont undefineresource }
ifelse
} 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
} executeonly 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
} executeonly if
/findresource cvx /undefined signalerror
} executeonly loop
} bind executeonly odef
/buildCIDType0 { % <CIDFontType0-font-resource> buildCIDType0 <font>
dup /BaseFont get findCIDFont exch pop
} bind executeonly def
/buildCIDType2 { % <CIDFontType2-font-resource> buildCIDType2 <font>
dup /BaseFont get findCIDFont exch pop
} bind executeonly def
/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
} bind executeonly def
% 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 executeonly 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 executeonly 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
} bind executeonly def
% 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
} bind executeonly def
% 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
} bind executeonly def
% ---------------- 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 load
/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 executeonly exch
{ dup 3 1 roll def } repeat
pop
} bind executeonly def
% <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
} bind executeonly def
% 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
} bind executeonly def
/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
} bind executeonly def
<8001> % PFB
{ dup /PFB //true put
exch pop readtype1
} bind executeonly def
(%!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
} bind executeonly def
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 executeonly 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 executeonly 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
} bind executeonly def
currentdict /font_tag_dict .undef
currentdict /fonttypeprocs .undef
currentdict /adjustfonttypes .undef
drawopdict begin
/d0 {
currentcolor currentcolorspace .swapcolors setcolorspace setcolor .swapcolors
.adjustcharwidth setcharwidth
} bind executeonly def
/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
} {
currentcolor currentcolorspace .swapcolors setcolorspace setcolor .swapcolors
6 -2 roll .adjustcharwidth 6 2 roll setcachedevice
} ifelse
} bind executeonly def
/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
} bind executeonly def
end
end % pdfdict
end % GS_PDF_ProcSet
.setglobal