Modul:Chem
A modult a Modul:Chem/doc lapon tudod dokumentálni
local getArgs = require('Module:Arguments').getArgs
local p = {} -- module's table
local T_ELEM = 0 -- token types
local T_NUM = 1 -- number
local T_OPEN = 2 -- open '('
local T_CLOSE = 3 -- close ')'
local T_PM_CHARGE = 4 -- + or −
local T_WATER = 6 -- .xH2O x number
local T_CRYSTAL = 9 -- .x
local T_CHARGE = 8 -- charge (x+), (x-)
local T_SUF_CHARGE = 10 -- suffix and charge e.g. 2+ from H2+
local T_SUF_CHARGE2 = 12 -- suffix and (charge) e.g. 2(2+) from He2(2+)
local T_SPECIAL = 14 -- starting with \ e.g. \d for double bond (=)
local T_SPECIAL2 = 16 -- starting with \y{x} e.g. \i{12} for isotope with mass number 12
local T_ARROW_R = 17 -- match: ->
local T_ARROW_EQ = 18 -- match: <->
local T_UNDERSCORE = 19 -- _{ ... }
local T_CARET = 20 -- ^{ ... }
local T_LINKOPEN = 21 -- Opening of link, always like "[[target|" even if the source wasn't
local T_NOCHANGE = 30 -- Anything else like ☃
function su(up, down)
if up == "" then
return ('<sub class="template-chem-sub">%s</sub>'):format(down)
end
if down == "" then
return ('<sup class="template-chem-sup">%s</sup>'):format(up)
end
return ('<span class="template-chem-su"><span>%s</span><span>%s</span></span>'):format(up, down)
end
function DotIt()
return '·'
end
function item(f) -- (iterator) returns one token (type, value) at a time from the formula 'f'
local i = 1
return function ()
local t, x = nil, nil
if (i == 1) and f:match('^[0-9]', i) then
x = f:match('^[%d.]+', i); t = T_NOCHANGE; i = i + x:len(); -- matching coefficient (need a space first)
elseif i <= f:len() then
x = f:match('^%s+[%d.]+', i); t = T_NOCHANGE; -- matching coefficient (need a space first)
if not x then x = f:match('^%s[+]', i); t = T_NOCHANGE; end -- matching + (H2O + H2O)
if not x then x = f:match('^%&%#[%w%d]+%;', i); t = T_NOCHANGE; end -- &#...;
if not x then x = f:match('^%<%-%>', i); t = T_ARROW_EQ; end -- matching <->
if not x then x = f:match('^%-%>', i); t = T_ARROW_R; end -- matching ->
if not x then x = f:match('^%u%l*', i); t = T_ELEM; end -- matching symbols like Aaaaa
if not x then x = f:match('^%d+[+-]', i); t = T_SUF_CHARGE; end -- matching x+, x-
if not x then x = f:match('^%d+%(%d*[+-]%)', i); t = T_SUF_CHARGE2; end -- matching x(y+/-), x(+/-)
if not x then x = f:match('^%(%d*[+-]%)', i); t = T_CHARGE; end -- matching (x+) (xx+), (x-) (xx-)
if not x then x = f:match('^[%d.]+', i); t = T_NUM; end -- matching number
if not x then x = f:match('^[(|{|%[]', i); t = T_OPEN; end -- matching ({[
if not x then x = f:match('^[)|}|%]]', i); t = T_CLOSE; end -- matching )}]
if not x then x = f:match('^[+-]', i); t = T_PM_CHARGE; end -- matching + or -
if not x then x = f:match('^%*[%d.]*H2O', i); t = T_WATER; end -- Crystal water
if not x then x = f:match('^%*[%d.]*', i); t = T_CRYSTAL; end -- Crystal
if not x then x = f:match('^[\\].{%d+}', i); t = T_SPECIAL2; end -- \y{x}
if not x then x = f:match('^[\\].', i); t = T_SPECIAL; end -- \x
if not x then x = f:match('^_{[^}]*}', i); t = T_UNDERSCORE; end -- _{...}
if not x then x = f:match('^^{[^}]*}', i); t = T_CARET; end -- ^{...}
if not x then x = f:match('^.', i); t = T_NOCHANGE; end --the rest - one by one
if x then i = i + x:len(); else i = i + 999; error("Hibás karakter a képletben: "..f) end
end
return t, x
end
end
function p._chem(args)
local f = args[1] or ''
f = mw.text.decode(f, true) -- handle entity input (like −): decode right away
f = string.gsub(f, "–", "-") -- replace – with - (hyphen not ndash)
f = string.gsub(f, "−", "-") -- replace – with - (hyphen not minus sign)
local formula = ''
local t, x
local auto = args['auto'] or ""
local seen = {}
local _debug = false
for t, x in item(f) do
if _debug then
formula = ("%s\n* %d %s"):format(formula, t, x)
elseif t == T_ELEM then
if (auto == '') or seen[x] then formula = formula .. x
else formula = ("%s%s"):format(formula, x); seen[x] = true
end
elseif t == T_COEFFICIENT then formula = formula .. x
elseif t == T_NUM then formula = formula .. su("", x);
elseif t == T_LINKOPEN then formula = formula .. x; -- [[Link|
elseif t == T_OPEN then formula = formula .. x; -- ([{
elseif t == T_CLOSE then formula = formula .. x; -- )]}
elseif t == T_PM_CHARGE then formula = formula .. su(x:gsub("-", "−"), "");
elseif t == T_SUF_CHARGE then
formula = formula .. su(x:match("[+-]"):gsub("-", "−"), x:match("%d+"), "");
elseif t == T_SUF_CHARGE2 then
formula = formula .. su(x:match("%(%d*[+-]"):gsub("-", "−"):sub(2, -1), x:match("%d+"))
elseif t == T_CHARGE then
formula = formula .. "<sup>"
if x:match("%d+") then formula = formula .. x:match("%d+"); end
formula = formula .. x:match("[%+-]"):gsub("-", "−") .. "</sup>";
-- Cannot concatenat a nil value from x:match("%d+");
elseif t == T_CRYSTAL then formula = formula .. DotIt() .. string.gsub( x, "*", '', 1 );
elseif t == T_SPECIAL then
parameter = x:sub(2, 2) -- x fra \x
if parameter == "s" then formula = formula .. "−" -- single bond
elseif parameter == "d" then formula = formula .. "=" -- double bond
elseif parameter == "t" then formula = formula .. "≡" -- tripple bond
elseif parameter == "q" then formula = formula .. "≣" -- Quadruple bond
elseif parameter == "h" then formula = formula .. "η" -- η, hapticity
elseif parameter == "*" then formula = formula .. "*" -- *, normal *
elseif parameter == "-" then formula = formula .. "-" -- -
elseif parameter == "\\" then formula = formula .. "\\" -- \
elseif parameter == "\'" then formula = formula .. "'" -- html-code for '
end
elseif t == T_SPECIAL2 then -- \y{x}
parameter = x:sub(2, 2) -- y fra \y{x}
if parameter == "h" then --Hapticity
formula = formula .. "η<sup>" .. x:match('%d+') .. "</sup>-"
elseif parameter == "m" then formula = formula .. "μ<sub>" .. x:match('%d+') .. "</sub>-" -- mu (bridging ligand)
end
elseif t == T_WATER then
if x:match("^%*[%d.]") then
formula = formula .. DotIt() .. x:match("%f[%.%d]%d*%.?%d*%f[^%.%d%]]") .. "H<sub>2</sub>O";
else
formula = formula .. DotIt() .. "H<sub>2</sub>O";
end
elseif t == T_UNDERSCORE then formula = formula .. su("", x:gsub("-", "−"):sub(3, -2)) -- x contains _{string}
elseif t == T_CARET then formula = formula .. su(x:gsub("-", "−"):sub(3, -2), "") -- x contains ^{string}
elseif t == T_ARROW_R then formula = formula .. " → "
elseif t == T_ARROW_EQ then formula = formula .. " ⇌ "
elseif t == T_NOCHANGE then formula = formula .. x; -- The rest - everything which isn't captured by the regular expresions.
else error('unreachable - ???') end -- in fact, unreachable
end
formula = mw.getCurrentFrame():preprocess('<templatestyles src="Module:Chem/styles.css"/>') ..
'<span class="chemf nowrap">' .. formula .. '</span>'
if args[2] or args[3] or args[4] then
formula = formula .. require('Module:If preview')._warning{
'A {{chem}} sablont több pozícióargumentummal hívták meg. 1 elegendő, pl. {{chem|H2O}}.'
}
end
return formula
end
function p.chem(frame)
local args = getArgs(frame)
return p._chem(args)
end
return p