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Diffstat (limited to 'tex/context/base/spec-mis.tex')
| -rw-r--r-- | tex/context/base/spec-mis.tex | 268 |
1 files changed, 137 insertions, 131 deletions
diff --git a/tex/context/base/spec-mis.tex b/tex/context/base/spec-mis.tex index 8b03e33b1..21f099c7b 100644 --- a/tex/context/base/spec-mis.tex +++ b/tex/context/base/spec-mis.tex @@ -1,131 +1,137 @@ -%D \module -%D [ file=spec-mis, -%D version=1997.04.01, -%D title=\CONTEXT\ Special Macros, -%D subtitle=Miscellaneous 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. Non||commercial use is -%C granted. - -%D Quite some modules in this group are dedicated to supporting -%D \PDF\ directly by means of \PDFTEX or indirectly by using -%D Acrobat Distiller. This module implements some common -%D features. - -\writestatus{loading}{Context Special Macros / Miscellaneous Macros} - -\unprotect - -%D \macros -%D {setPDFdestination} -%D -%D \PDF\ destinations should obey the specifications laid down -%D in the \PDF\ reference manual. The next macro strips illegal -%D characters from the destination name. - -\def\setPDFdestination#1% - {\bgroup - \obeylccodes - \lccode`\/=`-\lccode`\#=`-\lccode`\<=`-\lccode`\>=`-% - \lccode`\[=`-\lccode`\]=`-\lccode`\(=`-\lccode`\)=`-% - \stripcharacter{ }\from#1\to\PDFdestination - \@EA\lowercase\@EA{\@EA\xdef\@EA\PDFdestination\@EA{\PDFdestination}}% - \egroup} - -%D \macros -%D {URLhash} -%D -%D A rather trivial macro: - -\expandafter\def\expandafter\URLhash\expandafter{\string#} - -%D \macros -%D {ifusepagedestinations} -%D -%D In \PDF\ version 1.0 only page references were supported, -%D while in \DVIWINDO\ 1.N only named references were accepted. -%D Therefore \CONTEXT\ supports both methods of referencing. In -%D \PDF\ version 1.1 named destinations arrived. Lack of -%D continuous support of version 1.1 viewers for \MSDOS\ -%D therefore sometimes forces us to prefer page references. As -%D a bonus, they are faster too and have no limitations. How -%D fortunate we were having both mechanisms available when the -%D version 3.0 (\PDF\ version 1.2) viewers proved to be too -%D bugged to support named destinations. - -\newif\ifusepagedestinations - -%D \macros -%D {sanitizePDFstring} -%D -%D This macro at least tries to convert a arbitrary string -%D into a sequence of characters valid for \PDF\ bookmarks and -%D alike. It's 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% - {\bgroup - \obeylccodes - \lccode`( =1 \lccode`) =1 - \lccode`< =1 \lccode`> =1 - \lccode`[ =1 \lccode`] =1 - \lccode`\\=1 \lccode`/ =1 - \lowercase{\convertargument#1\to\ascii}% - % by integrating the split in the loop below - % \splitofftokens\maxPDFstringsize\from\ascii\to\ascii - % we diminish the processing time considerably - \scratchcounter=\maxPDFstringsize - \def\docommando##1% - {\ifnum\scratchcounter>0 - \advance\scratchcounter by -1 - \ifcase\lccode`##1\relax - \xdef#2{#2.}% let's show that something is missing - \or - \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: - \@EA\global\@EA\let\@EA#2\@EA\empty - \@EA\handletokens\ascii\with\docommando - \egroup} - -%D \macros -%D {dodoinsertfile} -%D -%D File insertion depend on the driver or \TEX\ variant used. -%D All driver modules use the same scheme for file insertion, -%D and therefore have the next macro in common: - -\def\dododoinsertfile[#1][#2,#3][#4]% - {\def\fileinsertionclass{do#1insert}% - \doifdefinedelse{\fileinsertionclass#3} - {\def\next{\getvalue{\fileinsertionclass#3}}} - {\doifdefinedelse{\fileinsertionclass#2} - {\def\next{\getvalue{\fileinsertionclass#2}}} - {\def\next{\gobbleeightarguments}}}% - \next{#4}} - -\def\dodoinsertfile#1#2#3% - {\dododoinsertfile[#1][#2][#3]} - -%D This macro is called with 10 arguments, where the first -%D one specifies the driver, like \type{yy} or \type{tr}. The -%D second argument is a \type{{type,method}} pair and the -%D third the filename. - -\protect - -\endinput +%D \module
+%D [ file=spec-mis,
+%D version=1997.04.01,
+%D title=\CONTEXT\ Special Macros,
+%D subtitle=Miscellaneous 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. Non||commercial use is
+%C granted.
+
+%D Quite some modules in this group are dedicated to supporting
+%D \PDF\ directly by means of \PDFTEX or indirectly by using
+%D Acrobat Distiller. This module implements some common
+%D features.
+
+\writestatus{loading}{Context Special Macros / Miscellaneous Macros}
+
+\unprotect
+
+%D \macros
+%D {setPDFdestination}
+%D
+%D \PDF\ destinations should obey the specifications laid down
+%D in the \PDF\ reference manual. The next macro strips illegal
+%D characters from the destination name.
+%D
+%D The \ACROBAT\ programs are not bug free. By setting the next
+%D switch, we will at least try to prevent problems.
+
+\newif\ifovercomePDFbugs \overcomePDFbugstrue
+
+\def\setPDFdestination#1%
+ {\bgroup
+ \obeylccodes
+ \lccode`\/=`-\lccode`\#=`-\lccode`\<=`-\lccode`\>=`-%
+ \lccode`\[=`-\lccode`\]=`-\lccode`\(=`-\lccode`\)=`-%
+ \stripcharacter{ }\from#1\to\PDFdestination
+ \@EA\lowercase\@EA{\@EA\xdef\@EA\PDFdestination\@EA
+ {\ifovercomePDFbugs'\fi\PDFdestination\ifovercomePDFbugs'\fi}}%
+ \egroup}
+
+%D \macros
+%D {URLhash}
+%D
+%D A rather trivial macro:
+
+\expandafter\def\expandafter\URLhash\expandafter{\string#}
+
+%D \macros
+%D {ifusepagedestinations}
+%D
+%D In \PDF\ version 1.0 only page references were supported,
+%D while in \DVIWINDO\ 1.N only named references were accepted.
+%D Therefore \CONTEXT\ supports both methods of referencing. In
+%D \PDF\ version 1.1 named destinations arrived. Lack of
+%D continuous support of version 1.1 viewers for \MSDOS\
+%D therefore sometimes forces us to prefer page references. As
+%D a bonus, they are faster too and have no limitations. How
+%D fortunate we were having both mechanisms available when the
+%D version 3.0 (\PDF\ version 1.2) viewers proved to be too
+%D bugged to support named destinations.
+
+\newif\ifusepagedestinations
+
+%D \macros
+%D {sanitizePDFstring}
+%D
+%D This macro at least tries to convert a arbitrary string
+%D into a sequence of characters valid for \PDF\ bookmarks and
+%D alike. It's 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%
+ {\bgroup
+ \obeylccodes
+ \lccode`( =1 \lccode`) =1
+ \lccode`< =1 \lccode`> =1
+ \lccode`[ =1 \lccode`] =1
+ \lccode`\\=1 \lccode`/ =1
+ \lowercase{\convertargument#1\to\ascii}%
+ % by integrating the split in the loop below
+ % \splitofftokens\maxPDFstringsize\from\ascii\to\ascii
+ % we diminish the processing time considerably
+ \scratchcounter=\maxPDFstringsize
+ \def\docommando##1%
+ {\ifnum\scratchcounter>0
+ \advance\scratchcounter by -1
+ \ifcase\lccode`##1\relax
+ \xdef#2{#2.}% let's show that something is missing
+ \or
+ \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:
+ \@EA\global\@EA\let\@EA#2\@EA\empty
+ \@EA\handletokens\ascii\with\docommando
+ \egroup}
+
+%D \macros
+%D {dodoinsertfile}
+%D
+%D File insertion depend on the driver or \TEX\ variant used.
+%D All driver modules use the same scheme for file insertion,
+%D and therefore have the next macro in common:
+
+\def\dododoinsertfile[#1][#2,#3][#4]%
+ {\def\fileinsertionclass{do#1insert}%
+ \doifdefinedelse{\fileinsertionclass#3}
+ {\def\next{\getvalue{\fileinsertionclass#3}}}
+ {\doifdefinedelse{\fileinsertionclass#2}
+ {\def\next{\getvalue{\fileinsertionclass#2}}}
+ {\def\next{\gobbleeightarguments}}}%
+ \next{#4}}
+
+\def\dodoinsertfile#1#2#3%
+ {\dododoinsertfile[#1][#2][#3]}
+
+%D This macro is called with 10 arguments, where the first
+%D one specifies the driver, like \type{yy} or \type{tr}. The
+%D second argument is a \type{{type,method}} pair and the
+%D third the filename.
+
+\protect
+
+\endinput
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