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- % Copyright (C) 1994, 2000 Aladdin Enterprises. All rights reserved.
- %
- % This software is provided AS-IS with no warranty, either express or
- % implied.
- %
- % This software is distributed under license and may not be copied,
- % modified or distributed except as expressly authorized under the terms
- % of the license contained in the file LICENSE in this distribution.
- %
- % For more information about licensing, please refer to
- % http://www.ghostscript.com/licensing/. For information on
- % commercial licensing, go to http://www.artifex.com/licensing/ or
- % contact Artifex Software, Inc., 101 Lucas Valley Road #110,
- % San Rafael, CA 94903, U.S.A., +1(415)492-9861.
-
- % $Id: pdf_font.ps,v 1.53.2.5 2004/08/31 04:03:30 ray Exp $
- % pdf_font.ps
- % PDF font operations.
-
- /.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
-
- % Get the Encoding for a font.
- /getencoding % <base-encoding> <font-resource> getencoding <enc>
- { /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.
-
- dup dup dup /MacRomanEncoding eq
- exch /MacExpertEncoding eq or
- exch /WinAnsiEncoding eq or
- { exch pop findencoding
- }
- { pop
- }
- ifelse
- }
- { dup /BaseEncoding knownoget
- { findencoding 3 -1 roll pop exch
- }
- if
- /Differences knownoget { updateencoding } if
- }
- ifelse
- }
- if
- } bdef
-
- % 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
- getfontmetrics 5 -1 roll pop .updatefont { dup /FontName get exch definefont } if
- } bind def
-
- % Get the (possibly modified) encoding of a font.
- /getfontencoding { % <font-resource> <font> getfontencoding
- % <font-resource> <font> <Encoding|null>
- 1 index /Encoding known {
- dup /Encoding knownoget { 2 index getencoding } { null } ifelse
- } {
- null
- } 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>
- .namestring % <<>> (root)
- 0 1 65535 {
- 5 string cvs % <<>> (root) (0)
- 1 index exch % <<>> (root) (root) (0)
- concatstrings % <<>> (root) (root0)
- dup % <<>> (root) (root0) (root0)
- 3 index exch % <<>> (root) (root0) <<>> (root0)
- known not {
- exch pop exit % <<>> (root0)
- } 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 known {
- dup null eq { pop dup /Encoding get } if
- 4 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 div
- % Stack: font font-res mscale
- 1 index /FirstChar oget dup 1 4 index /LastChar oget
- { % Stack: font font-res mscale first-char index
- Encoding 1 index dup 2 index length ge {
- ( **** Warning: Font Encoding array size is smaller than character range.\n)
- pdfformaterror
- pop pop /.notdef
- } {
- get
- } ifelse
- Widths 2 index 4 index sub dup 2 index length ge {
- ( **** Warning: Font Widths array size is smaller than character range.\n)
- pdfformaterror
- % use MissingWidth if it's available, if not, default to 1000 (full width)
- pop pop 4 index /FontDescriptor knownoget {
- /MissingWidth knownoget not { 1000 } if
- } { 1000 } ifelse
- } {
- get
- } ifelse
- % 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
- % There is a hack here to deal with encodings where the
- % same character appears more than once, because the Metrics
- % dictionary works by character name, not by character code.
- % We prefer to take (1) non-zero width, and (2) width for
- % the character name which appears in Differences. If the
- % character name appears in Differences, use the Width that
- % corresponds to the index in differences.
- dup 0 eq { exit } if
- Metrics 2 index .knownget not { 0 } if 0 ne {
- 5 index /Encoding knownoget not { exit } if
- dup type /dicttype ne { pop exit } if
- /Differences knownoget not { exit } if
- 3 index 3 index //match_in_diff exec not { exit } if
- } if
- % Create a new glyph for a character that maps to an existing glyph
- % with a different width and passes all the tests above.
- Metrics 2 index .knownget {
- 1 index ne
- } {
- //false
- } ifelse {
- GlyphMap //null eq {
- /Encoding Encoding dup length array copy def
- /GlyphMap 4 dict def
- } if
- Metrics 2 index //unique_name exec
- % Stack: font font-res mscale first-char index charname width new_name
- Encoding 4 index 2 index put
- GlyphMap 1 index 5 -1 roll put
- exch
- % Stack: font font-res mscale first-char index new_name width
- } if
- 2 copy Metrics 3 1 roll put
- exit
- } loop
- pop pop pop
- }
- for pop
- % Now fill in the MissingWidth for any encoded characters
- % that aren't in Metrics already. Note that built-in
- % fonts may have Widths/FirstChar/LastChar but no
- % FontDescriptor, so we must check for this.
- % Stack: font font-res mscale
- 1 index /FontDescriptor knownoget {
- Metrics exch
- /MissingWidth knownoget { 2 index mul } { 0 } ifelse exch
- Encoding {
- % Stack: font font-res mscale missing-width metrics charname
- % Work around the abovementioned pdfTeX bug.
- dup //null ne {
- 2 copy known not { 2 copy 4 index put } if pop
- } {
- pop
- } ifelse
- } forall pop pop pop
- } {
- pop
- } ifelse
- exch Encoding Metrics GlyphMap end
- } {
- //null //null
- } ifelse
- } bdef
-
- currentdict /unique_name undef
- currentdict /match_in_diff undef
-
- % ---------------- 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
-
- % Cache original fonts to prevent adjustfont to accumulate changes.
- /pdfcachefont { % <font_name> pdfcachefont <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
-
- % 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 pdfcachefont
- } {
- 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 exch
- } {
- ( **** FontDescriptor missing required /FontName key. BaseFont name used.\n)
- pdfformaterror
- pop 2 index exch % grab the BaseFont from the stack.
- } ifelse
- % Analyzes font name and extract "Narrow" property
- % which is not described by the FontDescriptor Flags.
- 0 2 index .fontnameproperties 4 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 not {
- % 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
- pdfcachefont
- % 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
- definefont
- } {
- % No descriptor available, use the default algorithm.
- pdfcachefont
- } ifelse
- } ifelse
- exch pop
- } bdef
-
- % ---------------- Type 1 fonts ---------------- %
-
- /buildType1 % <Type1-font-resource> buildType1 <font>
- { dup /BaseFont get pdffindfont
- } bdef
-
- % The state dictionary for the embedded Type 1 font reading procedure
- % has the following keys and values:
- % data - stream (filter)
- % buffer, buffer2 - string
- % hexify - procedure to convert buffer to hex if needed
- % leftstr - string containing (non-negative) integer
- % sectionstr - string containing a character 0 .. 3
- % stream - (stream) dictionary
- % proc - procedure of the form {-dict- type1read}
- % pfbhdr - string containing 16#80 if PFB, 0 otherwise
- % When the procedure is executing, this dictionary is current.
- % leftstr and sectionstr are strings so that we can change their values
- % reliably in case the font executes a restore!
- % We also have to do something special about embedded fonts that
- % execute definefont more than once -- that is the function of topFontDict.
-
- % Read an embedded Type 1 font.
- /readfontfilter { % <proc> readfontfilter <filter>
- 0 () /SubFileDecode filter
- } bdef
- /readtype1dict 5 dict dup begin
- /definefont {
- dup topFontDict eq topFontDict null eq or {
- dup wcheck not { dup length dict copy } if
- exch pop savedFontName exch
- } if
- //systemdict /definefont get exec
- } bdef
- /eexec {
- % Assume the font dictionary is directly below the file on the stack
- count 0 gt { /topFontDict 2 index cvlit store } if
- //.eexec_param_dict /eexecDecode filter
- //systemdict begin readtype1dictcopy begin cvx stopped
- currentdict readtype1dictcopy eq { end } if
- currentdict //systemdict eq { end } if
- { stop } if
- } bdef
- end readonly def
- /readtype1 { % <font-resource> <stream-dict> readtype1 <font>
- % Read the definition, using a procedure-based filter
- % that turns binary/hex conversion on and off
- % at the right times.
- 1 index exch
- PDFfile fileposition 3 1 roll
- 11 dict begin
- /leftstr ( ) 10 string copy def
- dup /Length1 oget leftstr cvs pop
- /sectionstr <00> 1 string copy def
- /pfbhdr <00> 1 string copy def
- /stream 1 index def
- true resolvestream /data exch def
- /buffer 1000 string def % arbitrary
- /buffer2 buffer length 2.1 div cvi 1 sub string def
- /hexify /buf2hex load def
- currentdict end
- /type1read cvx 2 array astore cvx dup 0 get /proc 2 index put
- readfontfilter
- % 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. Also restore dictstack depth.
- //systemdict begin
- % The PDF specification is somewhat muddy about whether
- % an embedded font's name is supposed to be the BaseFont
- % from the Font object or the FontName from the descriptor.
- % Acrobat Distiller requires the former. Save away the
- % name so we can substitute it at definefont time.
- //readtype1dict dup length 3 add dict copy begin
- 1 index /BaseFont oget /savedFontName exch def
- /topFontDict null def
- /readtype1dictcopy currentdict def
- { run } aload pop count 1 sub 2 packedarray cvx exec
- % clean up the dictstack
- { currentdict /topFontDict known not { end } { end end exit } ifelse } loop
- count exch sub { pop } repeat
- PDFfile 3 -1 roll setfileposition
- /BaseFont oget pdfcachefont
- exch pop
- } bdef
-
- % Execute the appropriate reading procedure.
- /type1read % <dict> type1read <string>
- { begin leftstr cvi
- { type1read0 type1read1 type1read2 type1read3 } sectionstr 0 get get exec
- ( ) leftstr copy cvs pop end
- } bdef
-
- % Read the next block of data into the buffer.
- /type1readdata % <left> <buffer> type1readdata <substring> <left'>
- { 0 2 index 2 index length .min getinterval
- % Adobe requires readstring to signal an error if given
- % an empty string. Work around this nonsense here.
- dup length 0 ne { data exch readstring pop } if
- dup length 3 -1 roll exch sub
- PDFDEBUG
- { dup =only ( read ) print
- 1 index length =only (: ) print
- 1 index == flush
- } if
- } bdef
-
- % Read the initial byte to see if we need to skip a 6 byte PFB header
- /type1read0 { % <left> type1read0 <string> <left'>
- sectionstr 0 1 put % either way we go to the next stage
- pfbhdr type1readdata
- 1 index 0 get 16#80 eq {
- ( **** Warning: Embedded Type1 font in PFB format is not valid PDF.\n)
- pdfformaterror
- PDFDEBUG { (skipping PFB header) = flush } if
- exch pop buffer 0 5 getinterval type1readdata exch
- dup 4 get 256 mul 1 index 3 get add 256 mul
- 1 index 2 get add 256 mul 1 index 1 get add
- PDFDEBUG { (PFB segment length = ) print dup = } if
- exch pop % discard the string keeping the PFB segment length
- 2 copy ne {
- ( **** Warning: Type 1 PFB segment length and Length 1 value do not match.\n)
- pdfformaterror
- exch % keep the PFB length instead
- } if
- pop
- buffer type1readdata % go ahead and read a block
- }
- if % if not PFB, return pfbhdr string (first char of file, usually %).
- } bdef
-
- % Read the next block of the initial text portion.
- /type1read1 { % <left> type1read1 <string> <left'>
- PDFDEBUG { (read1 ) print } if
- dup 0 eq {
- pop sectionstr 0 2 put
- stream /Length2 oget
- % Determine whether to hexify data for eexec.
- dup 8 lt {
- type1read2 % Hexify.
- } {
- PDFDEBUG { (read2 ) print } if
- pfbhdr 0 get 16#80 eq {
- % eat 6 more bytes of PFB junk before proceeding
- PDFDEBUG { (skipping PFB header in segment 2) = flush } if
- buffer 0 6 getinterval type1readdata exch
- dup 5 get 256 mul 1 index 4 get add 256 mul
- 1 index 3 get add 256 mul 1 index 2 get add
- PDFDEBUG { (PFB segment length = ) print dup = } if
- exch pop % discard the string keeping the PFB segment length
- 2 copy ne {
- ( **** Warning: Type 1 PFB segment length and Length 2 value do not match.\n)
- pdfformaterror
- exch % keep the PFB length instead
- } if
- pop
- } if
- buffer2 type1readdata exch
- % The check doesn't have to be 100% accurate:
- % hexifying is always OK.
- dup 0 8 getinterval 0 exch { or } forall
- 128 ge {
- /hexify { } store
- /buffer2 buffer def % We don't need an intermediate buffer.
- } if hexify exch
- } ifelse
- } {
- buffer type1readdata
- } ifelse
- } bdef
-
- % Convert a string from binary to hex for eexec.
- % Free variables: buffer.
- /buf2hex { % <string> buf2hex <hexstring>
- buffer /ASCIIHexEncode filter dup 3 -1 roll writestring closefile
- buffer (>) search pop exch pop exch pop
- } bdef
-
- % Read the next block of the encrypted portion.
- /type1trailer
- (0000000000000000000000000000000000000000000000000000000000000000\n\
- 0000000000000000000000000000000000000000000000000000000000000000\n\
- 0000000000000000000000000000000000000000000000000000000000000000\n\
- 0000000000000000000000000000000000000000000000000000000000000000\n\
- 0000000000000000000000000000000000000000000000000000000000000000\n\
- 0000000000000000000000000000000000000000000000000000000000000000\n\
- 0000000000000000000000000000000000000000000000000000000000000000\n\
- 0000000000000000000000000000000000000000000000000000000000000000\n\
- cleartomark\n)
- readonly def
- /type1read2 { % <left> type1read2 <string> <left'>
- PDFDEBUG { (read2 ) print } if
- dup 0 eq
- { pop sectionstr 0 3 put
- stream /Length3 oget
- dup 0 eq
- { PDFDEBUG { (trailer ) print } if
- type1trailer exch
- }
- {
- pfbhdr 0 get 16#80 eq {
- % eat 6 more bytes of PFB junk before proceeding
- PDFDEBUG { (skipping PFB header in segment 3) = flush } if
- buffer 0 6 getinterval type1readdata exch
- dup 5 get 256 mul 1 index 4 get add 256 mul
- 1 index 3 get add 256 mul 1 index 2 get add
- PDFDEBUG { (PFB segment length = ) print dup = } if
- exch pop % discard the string keeping the PFB segment length
- 2 copy ne {
- ( **** Warning: Type 1 PFB segment length and Length 3 value do not match.\n)
- pdfformaterror
- exch % keep the PFB length instead
- } if
- pop
- } if
- type1read3
- }
- ifelse
- }
- { buffer2 type1readdata exch hexify exch
- }
- ifelse
- } bdef
-
- % Read the next block of the final text portion.
- % When finished, this procedure returns an empty string.
- /type1read3 % <left> type1read3 <string> <left'>
- { PDFDEBUG { (read3 ) print } if
- buffer type1readdata
- } bdef
-
- % ---------------- Type 3 fonts ---------------- %
-
- /buildType3 { % <Type3-font-resource> buildType3 <font>
- 8 dict begin
- /FontType 3 def
- /Resources 1 index /Resources knownoget { oforce } { 0 dict } 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 .knownget not {
- PDFfile fileposition 16 10 string cvrs cvn
- } 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 3 dict begin
- /Font 3 -1 roll def /CharCode 1 index def
- % Make unknown characters map to /.notdef
- Encoding exch get dup CharProcs exch known
- { CharProcs exch oget }
- { pop CharProcs /.notdef oget }
- ifelse
- PDFfile fileposition exch
- false resolvestream
- % Stack: filepos stream
- % Don't let setgcolor set the color inside the BuildGlyph
- % procedure, because this causes an /undefined error.
- q null /FillColor gput null /StrokeColor gput
- Font /Resources get exch pdfopdict .pdfruncontext
- Q
- PDFfile exch setfileposition
- end end
- } bdef
- FontName currentdict end definefont exch pop
- } bdef
- /.adjustcharwidth { % <wx> <wy> .adjustcharwidth <wx'> <wy'>
- /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
- ( **** Warning: Fonts with Subtype = /TrueType should be embedded.\n) pdfformaterror
- ( But ) pdfformaterror dup =string cvs pdfformaterror ( is not embedded.\n) pdfformaterror
- dup TTfonts exch .knownget {
- 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
- definefont
- } {
- pdffindfont
- } ifelse
- } bdef
-
- % Read an embedded TrueType font.
- /readtruetype { % <font-resource> <stream-dict> readtruetype <font>
- % This is much simpler than readtype1, because we don't
- % have to deal with the tripartite .PFB format.
- 1 index exch
- PDFfile fileposition 3 1 roll
- true resolvestream readfontfilter
- % Stack: filepos fontres stream
- 1 index /Subtype get /CIDFontType2 eq {
- .loadttcidfont
- % Stack: filepos fontres cidfont
- } {
- % filepos fontres stream
- 1 index /FontDescriptor oget % filepos fontres stream fd
- /Flags get 4 and 0 ne % filepos fontres stream is_symbolic
- dup {
- 2 index null exch getencoding % filepos fontres stream is_symbolic Encoding
- dup 4 index exch % filepos fontres stream is_symbolic Encoding fontres Encoding
- /prebuilt_encoding exch put % filepos fontres stream is_symbolic Encoding
- } {
- null
- } ifelse
- .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
-
- /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
- } {
- PDFfile fileposition exch
- dup /CMapName get exch true resolvestream cvx exec
- /CMap findresource
- exch PDFfile exch setfileposition
- } ifelse % CMap
- [
- 3 index /DescendantFonts oget { exec resourcefont } forall
- ] % subfonts
- composefont
- % 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 definefont
- } {
- 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 .knownget {
- 1 index /DW 3 -1 roll put
- } {
- dup /DW .pdfDefaultDW put
- } ifelse
-
- 1 index /W .knownget {
- dup 2 index /W 3 -1 roll put
- .pdfMakeInternalW 1 index /.internalW 3 -1 roll put
- } if
-
- 1 index /DW2 .knownget {
- 1 index /DW2 3 -1 roll put
- } {
- dup /DW2 .pdfDefaultDW2 put
- } ifelse
-
- 1 index /W2 .knownget {
- 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 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 3 add def
- }
- >> def
-
- /i 0 def
-
- [ { putMTXEntry Mi1 type get exec i Msize ge { exit } if } loop ]
- end
- } def
-
- /.pdfMakeInternalW { dup length 0 gt { 1 .pdfMakeInternalMTXArray } if } def
- /.pdfMakeInternalW2 { dup length 0 gt { 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
-
- {
- 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
-
- 1000 div % <w0x'> (normalized W)
- 0 % <w0y'>
-
- % Stack: <w0x> <w0y> <llx> <lly> <urx> <ury> <cid> <w0x'> <w0y'>
- 9 -2 roll pop pop % discard <w0x> <w0y>
- 7 2 roll % put <w0x'> <w0y'>
-
- % Stack: <w0x'> <w0y'> <llx> <lly> <urx> <ury> <cid>
- 0 % <w1x'>
- exch % put <w1x'>
-
- % Stack: <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: <w0x'> <w0y'> <llx> <lly> <urx> <ury> <w1x'> { [<vy'> <w1y'>] | [<w1y'> <vx'> <vy'>] }
- dup length 2 eq { % this is DW2
- {1000 div} forall exch
- 4 index 7 index add 2 div % <vx'> = (<urx> + <llx>) / 2
- exch
- }{ % assume W2
- {1000 div} forall
- } ifelse
- 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
-
- dup dup length string cvs
- (,Bold) tailmatch {
- exch pop
- cvn findCIDFont 0.03 makeboldfont
- exit
- } if
- (,Italic) tailmatch {
- exch pop
- cvn findCIDFont
- [ 1 0 0.3 1 0 0 ] makefont
- exit
- } if
- (,BoldItalic) tailmatch {
- exch pop
- cvn findCIDFont 0.03 makeboldfont
- [ 1 0 0.3 1 0 0 ] makefont
- exit
- } if
- pop
-
- 1 index /CIDSystemInfo get begin Registry (-) Ordering end
- concatstrings concatstrings
- cvn
- QUIET not {
- (Substituting ) print dup ==only
- ( for ) print 1 index ==only (.\n) print
- } if
- exch pop
- /CIDFont findresource
- exit
- } 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
- % Can't know the length of the decompressed stream, so allocate a big buffer...
- dup 65534 string readstring {
- % Length exceeded max string size, use an array of two strings
- 1 index 65534 string readstring pop % maybe a null string - not important.
- 2 array astore
- % Stack: filepos fontres font mapstream array
- dup 1 get length 65534 add
- } {
- dup length
- } ifelse
- 2 idiv
- % Stack: filepos fontres font mapstream array/string CIDCount
- 3 index exch /CIDCount exch put
- exch closefile exch
- dup /CIDMap 4 -1 roll put
- } ifelse
- 3 2 roll PDFfile exch setfileposition
- } if
- } bdef
-
- % Adjust a CIDFontType0 DW[2] in the font resource.
- /adjustCIDType0 { % <font-resource> <font> adjustfont <font'>
- addCIDmetrics
- dup /CIDFontName get exch /CIDFont defineresource
- } bind def
-
- % Adjust a CIDFontType2 DW[2] and CIDToGIDMap in the font resource.
- /adjustCIDType2 { % <font-resource> <font> adjustfont <font'>
- addCIDmetrics
- processCIDToGIDMap
- dup /CIDFontName get exch /CIDFont defineresource
- } bind def
-
- % ---------------- Other embedded fonts ---------------- %
-
- /fontloadprocs mark
- /Type1C /readType1C cvx
- /CIDFontType0C /readCIDFontType0C cvx
- .dicttomark readonly def
-
- % 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 FRD
- closefile closefile pop
- PDFfile 3 -1 roll setfileposition
- /FontDescriptor oget /FontName oget pdfcachefont
- exch 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 FRD
- 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
-
- % ---------------- Font lookup ---------------- %
-
- /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
-
- /resourcefont % <font-resource> resourcefont <font>
- { dup /PSFont .knownget
- { /FID knownoget { type /fonttype eq } { //false } ifelse }
- { //false }
- ifelse
- { /PSFont get }
- { dup dup /FontDescriptor knownoget { % Stack: font-res font-res font-desc
- dup /FontObject .knownget {
- 3 1 roll pop pop
- } {
- dup /FontFile knownoget
- { dup /Length oget 0 eq
- { pop pop dup /Subtype get fonttypeprocs exch get exec }
- { exch pop readtype1 }
- ifelse
- }
- { dup /FontFile2 knownoget
- { exch pop readtruetype }
- { /FontFile3 knownoget
- { dup /Subtype get fontloadprocs exch get exec }
- { dup /Subtype get fonttypeprocs exch get exec }
- ifelse
- }
- ifelse
- }
- ifelse
- 1 index /FontDescriptor oget
- 1 index /FontObject exch put % Save pointer to the font
- }
- ifelse
- }
- { dup /Subtype get fonttypeprocs exch dup () cvn eq {
- ( **** Warning: Font missing required Subtype, /Type1 assumed.\n)
- pdfformaterror
- pop /Type1
- } if get exec
- }
- ifelse
- % Stack: font-res font
- 1 index 3 1 roll
- 1 index /Subtype get
- //adjustfonttypes exch .knownget { exec } { exch pop } ifelse
- dup 3 1 roll /PSFont exch put
- }
- ifelse
- } bdef
-
- drawopdict begin
- /d0 {
- .adjustcharwidth setcharwidth
- } bdef
- /d1 {
- 4 index 0 ne {
- % invalid wy parameter for d1 in Type3 font (must be 0)
- % Even though the PDF 1.4 specification states 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,
- % but if the specification is ever changed to allow non-zero wy, this
- % will not work.
- 5 -1 roll pop 0 5 1 roll % set wy to 0
- } if
-
- 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 .adjustcharwidth setcharwidth
- } {
- 6 -2 roll .adjustcharwidth 6 2 roll setcachedevice
- } ifelse
- } bdef
- /Tf {
- 1 index Page /Font rget not { 1 index /invalidfont signalerror } if
- resourcefont exch Tf pop
- } bdef
- end
-
- end % pdfdict
- end % GS_PDF_ProcSet
- .setglobal
-