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%D \module
%D [ file=spec-fdf,
%D version=1998.05.18,
%D title=\CONTEXT\ \PDF\ Macros,
%D subtitle=Support Macros,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA / Hans Hagen \& Ton Otten}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
\unprotect
\chardef\safePDFcode=`-
\def\setPDFdestination#1%
{\bgroup
\retainlccodes
\lccode`\/\safePDFcode \lccode`\#\safePDFcode
\lccode`\<\safePDFcode \lccode`\>\safePDFcode
\lccode`\[\safePDFcode \lccode`\]\safePDFcode
\lccode`\(\safePDFcode \lccode`\)\safePDFcode
\ifovercomePDFspace
\lccode`\ \safePDFcode
\fi
\ifovercomePDFbugs
\xdef\PDFdestination{'#1'}%
\else
\xdef\PDFdestination{#1}%
\fi
% nicer \xdef\PDFdestination{\ifovercomePDFbugs'\fi#1\ifovercomePDFbugs'\fi}%
\lowercase\@EA{\@EA\xdef\@EA\PDFdestination\@EA{\PDFdestination}}%
\egroup}
%D This is much faster since we don't have to set the full
%D range of lc-codes; about 5 sec on a 1000mhz PIII for
%D 20K named destinations "x(x) x"). Of course when you use
%D page destinations, the saving is nil.
% \beginETEX \scantokens
%
% \doifnotmode{atpragma}{\let\next\setPDFdestination} % experimental
%
% \bgroup
%
% \catcode`\/=\@@active \catcode`\#=\@@active
% \catcode`\<=\@@active \catcode`\>=\@@active
% \catcode`\[=\@@active \catcode`\]=\@@active
% \catcode`\(=\@@active \catcode`\)=\@@active
%
% \gdef\PDFrepchar{-}
%
% \gdef\setPDFdcharacters
% {\catcode`\/=\@@active \let/\PDFrepchar
% \catcode`\#=\@@active \let#\PDFrepchar
% \catcode`\<=\@@active \let<\PDFrepchar
% \catcode`\>=\@@active \let>\PDFrepchar
% \catcode`\[=\@@active \let[\PDFrepchar
% \catcode`\]=\@@active \let]\PDFrepchar
% \catcode`\(=\@@active \let(\PDFrepchar
% \catcode`\)=\@@active \let)\PDFrepchar}
%
% \egroup
%
% \def\setPDFdestination#1% expansion is needed, otherwise embedded
% {\bgroup % macros will not expand under the new
% \setPDFdcharacters % catcode regime
% \ifovercomePDFspace
% \catcode32=\@@ignore
% \fi
% \xdef\PDFdestination{\ifovercomePDFbugs'\fi#1\ifovercomePDFbugs'\fi}%
% \scantokens\@EA{\@EA\xdef\@EA\PDFdestination\@EA{\PDFdestination}}%
% \egroup}
%
% \doifnotmode{atpragma}{\let\setPDFdestination\next} % experimental
%
% \endETEX
%D This is a slow one, that uses \type{\lccode}'s to
%D change the glyph as well as converts sensisitve ones into a
%D \PDF\ command sequence, so \type{(} becomes \type{\(}. In
%D fact we translate the string to lowercase inactive and non
%D special characters, limit their number and finaly convert
%D some of the characters to save ones.
\chardef\maxPDFstringsize=60
\def\sanitizePDFstring#1\to#2% bugged
{\bgroup
\retainlccodes
\lccode`( \zerocount \lccode`) \zerocount
\lccode`< \zerocount \lccode`> \zerocount
\lccode`[ \zerocount \lccode`] \zerocount
\lccode`\\\zerocount \lccode`/ \zerocount
\lowercase{\defconvertedargument\ascii{#1}}%
% by integrating the split in the loop below
% \splitofftokens\maxPDFstringsize\from\ascii\to\ascii
% we diminish the processing time considerably
\scratchcounter\maxPDFstringsize
\def\docommand##1%
{\ifcase\scratchcounter\else
\advance\scratchcounter \minusone
\ifcase\lccode`##1\relax
\xdef#2{#2\expandafter\string\csname##1\endcsname}%
\else
\xdef#2{#2##1}%
\fi
\fi}%
%\global\let#2=\empty
% or to permit #2 to be \ascii too:
\global\@EA\let\@EA#2\@EA\empty
\@EA\handletokens\ascii\with\docommand
\egroup}
% \beginETEX \scantokens
%
% \doifnotmode{atpragma}{\let\next\sanitizePDFstring} % experimental
%
% \bgroup
%
% \catcode`\.=\@@escape
%
% .catcode`./=.@@active
% .catcode`.<=.@@active .catcode`.>=.@@active
% .catcode`.[=.@@active .catcode`.]=.@@active
% .catcode`.(=.@@active .catcode`.)=.@@active
%
% .gdef.setPDFscharacters%
% {.catcode`.\=.@@other
% .catcode`./=.@@active .def/{.noexpand./}%
% .catcode`.<=.@@active .def<{.noexpand.<}%
% .catcode`.>=.@@active .def>{.noexpand.>}%
% .catcode`.[=.@@active .def[{.noexpand.[}%
% .catcode`.]=.@@active .def]{.noexpand.]}%
% .catcode`.(=.@@active .def({.noexpand.(}%
% .catcode`.)=.@@active .def){.noexpand.)}}
%
% .gdef.sanitizePDFstring#1.to#2%
% {.bgroup
% .setPDFscharacters
% .catcode`=.@@escape
% .edef.next{.strippedcsname#2}%
% .scantokens{setxvalue{next}{#1}}%
% .egroup}
%
% .egroup
%
% \doifnotmode{atpragma}{\let\sanitizePDFstring\next} % experimental
%
% \endETEX
%
% There is an unicode variant in spec-tst!
\protect \endinput
|
