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$lY> Jh6\n 1h }]{ǿ?% Copyright (C) 2001-2021 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 { % updateencoding % 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: 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 % getencoding { 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_na