diff options
Diffstat (limited to 'tex/context/third/enigma/enigma.lua')
| -rw-r--r-- | tex/context/third/enigma/enigma.lua | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/tex/context/third/enigma/enigma.lua b/tex/context/third/enigma/enigma.lua index 3ccf593..3a97a24 100644 --- a/tex/context/third/enigma/enigma.lua +++ b/tex/context/third/enigma/enigma.lua @@ -123,11 +123,11 @@ local GLUE_SPEC_NODE = node and nodeid"glue_spec" local KERN_NODE = node and nodeid"kern" local DISC_NODE = node and nodeid"disc" -local IGNORE_NODES = { +local IGNORE_NODES = node and { --[GLUE_NODE] = true, [KERN_NODE] = true, --[DISC_NODE] = true, -} +} or { } --[[ichd-- \startparagraph @@ -199,10 +199,16 @@ do q = 17, r = 18, s = 19, t = 20, u = 21, v = 22, w = 23, x = 24, y = 25, z = 26, } +--[[ichd-- +\startparagraph +The five rotors to simulate.\reference[listing:rotor_wiring]{} +Their wirings are created from strings at runtime, see below the +function \luafunction{get_rotors}. +\stopparagraph +--ichd]]-- --[[ Nice: http://www.ellsbury.com/ultraenigmawirings.htm - Wirings are created from strings at runtime. ]]-- alpha_sorted = "abcdefghijklmnopqrstuvwxyz" raw_rotor_wiring = { @@ -233,7 +239,7 @@ mnemonic. end --[[ichd-- -\placetable[here][]{The three reflectors and their substitution +\placetable[here][listing:reflector]{The three reflectors and their substitution rules.}{% \starttabulate[|r|l|] \NC UKW a \NC AE BJ CM DZ FL GY HX IV KW NR OQ PU ST \NC \NR @@ -866,7 +872,7 @@ extraction of successive characters from the sequence. local p_init = P{ "init", init = V"whitespace"^-1 * Ct(V"do_init"), - do_init = V"reflector" * V"whitespace" + do_init = (V"reflector" * V"whitespace")^-1 * V"rotors" * V"whitespace" * V"ring" * (V"whitespace" * V"plugboard")^-1 @@ -1081,12 +1087,22 @@ consists of three elements: emit(1, pprint_machine_step, machine.step, machine.name) end +--[[ichd-- +\startparagraph +The day key is entrusted to the function \luafunction{handle_day_key}. +If the day key is the empty string or \type{nil}, it will ask for a key +on the terminal. (Cf. below, \at{page}[listing:ask_for_day_key].) +Lesson: don’t forget providing day keys in your setups when running in +batch mode. +\stopparagraph +--ichd]]-- local handle_day_key handle_day_key = function (dk, name, old) local result if not dk or dk == "" then dk = ask_for_day_key(name, old) end result = lpegmatch(p_init, dk) + result.reflector = result.reflector or "b" -- If we don’t like the key we’re going to ask again. And again.... return result or handle_day_key(nil, name, dk) end @@ -1286,6 +1302,7 @@ a sanitizer routine and, if so, apply it to its value. --[[ichd-- \startparagraph If the machine setting lacks key settings then we’ll go ahead and ask +\reference[listing:ask_for_day_key]{}% the user directly, hence the function \luafunction{ask_for_day_key}. We abort after three misses lest we annoy the user \dots \stopparagraph |