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%D \module
%D [ file=t-enigma,
%D version=2012-02-21 10:59:43+0100,
%D title=\CONTEXT\ User Module,
%D subtitle=Enigma,
%D author=Philipp Gesang,
%D date=\currentdate,
%D copyright=Philipp Gesang,
%D license=2-clause BSD,
%D email={gesang at stud dot uni-heidelberg dot de}]
%D This module is licensed under the conditions of the BSD license with
%D two clauses. There is a copy in a file named "COPYING" in the
%D t-enigma source tree.
\unprotect
\writestatus{loading} {ConTeXt module / Enigma Document Encryption}
\startinterface all
\setinterfacevariable {enigma} {enigma}
\stopinterface
\definenamespace [\v!enigma] [
\v!command=\v!no,
comment=Enigma Document Encryption,
\s!name=\v!enigma,
\s!parent=\v!enigma,
% setup=\v!list,
setup=\v!no,
style=\v!no,
type=module,
version=hg-tip,
]
%D Loading the \LUA\ conversion routines.
\startluacode
thirddata = thirddata or { }
\stopluacode
\registerctxluafile{enigma}
%D \startdocsection[title=setups]
%D \startparagraph
%D The main setup. The \texmacro{defineenigma} macro does not adhere to
%D the reommended practis of automatical macro derivation. Rather, we
%D have our own parser do the job of setting globals. This is a
%D consequence of the intention to offer the same behavior in any of the
%D three main formats, \PLAIN, \CONTEXT and \LATEX. Hence, we don’t rely
%D on the internal mechanisms but implement our own macro generator.
%D \stopparagraph
\def\do_define_enigma#id{%
\expandafter\gdef\csname start\enigmaid\endcsname{%
\bgroup
\ctxlua{
if thirddata.enigma.machines["#id"] then
local callback = thirddata.enigma.callbacks["#id"],
nodes.tasks.enableaction("processors", "thirddata.enigma.callbacks.#id")
else
print([[ENIGMA: No machine of that name: #id!]])
end
}%
}%
%
\expandafter\gdef\csname stop\enigmaid\endcsname{%
\ctxlua{
nodes.tasks.disableaction("processors", "thirddata.enigma.callbacks.#id")
thirddata.enigma.machines["#id"]:processed_chars()
}%
\egroup%
}%
}
\def\defineenigma#id{%
\begingroup
\edef\enigmaid{#id}%
\expandafter\do_define_enigma\expandafter{\enigmaid}%
\endgroup%
}
%D \stopdocsection
%D \startdocsection[title=Setup]
\def\do_setup_enigma#args{%
\ctxlua{
local enigma = thirddata.enigma
local current_args = enigma.parse_args([====[\detokenize{#args}]====])
enigma.new_callback(
enigma.new_machine(current_args,
[====[\currentenigmaid]====]),
[====[\currentenigmaid]====])
}%
\popcatcodetable
\egroup%
}
%D \startparagraph
%D The module setup \texmacro{setupenigma} expects key=value, notation.
%D All the logic is at the Lua end, not much to see here …
%D \stopparagraph
\def\setupenigma#id{%
\bgroup
\edef\currentenigmaid{#id}
\pushcatcodetable
\catcodetable \txtcatcodes
\do_setup_enigma%
}
%D \stopdocsection
\protect
% vim:ft=context:sw=2:ts=2:tw=72
|
