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if not modules then modules = { } end modules ['char-tex'] = {
version = 1.001,
comment = "companion to char-ini.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local lpeg = lpeg
local find = string.find
local P, C, R, S, Cs, Cc = lpeg.P, lpeg.C, lpeg.R, lpeg.S, lpeg.Cs, lpeg.Cc
local U, lpegmatch = lpeg.patterns.utf8, lpeg.match
local allocate, mark = utilities.storage.allocate, utilities.storage.mark
characters = characters or { }
local characters = characters
characters.tex = characters.tex or { }
local accentmapping = allocate {
['"'] = { [""] = "¨",
A = "Ä", a = "ä",
E = "Ë", e = "ë",
I = "Ï", i = "ï", ["ı"] = "ï",
O = "Ö", o = "ö",
U = "Ü", u = "ü",
Y = "Ÿ", y = "ÿ",
},
["'"] = { [""] = "´",
A = "Á", a = "á",
C = "Ć", c = "ć",
E = "É", e = "é",
I = "Í", i = "í", ["ı"] = "í",
L = "Ĺ", l = "ĺ",
N = "Ń", n = "ń",
O = "Ó", o = "ó",
R = "Ŕ", r = "ŕ",
S = "Ś", s = "ś",
U = "Ú", u = "ú",
Y = "Ý", y = "ý",
Z = "Ź", z = "ź",
},
["."] = { [""] = "˙",
C = "Ċ", c = "ċ",
E = "Ė", e = "ė",
G = "Ġ", g = "ġ",
I = "İ", i = "i", ["ı"] = "i",
Z = "Ż", z = "ż",
},
["="] = { [""] = "¯",
A = "Ā", a = "ā",
E = "Ē", e = "ē",
I = "Ī", i = "ī", ["ı"] = "ī",
O = "Ō", o = "ō",
U = "Ū", u = "ū",
},
["H"] = { [""] = "˝",
O = "Ő", o = "ő",
U = "Ű", u = "ű",
},
["^"] = { [""] = "ˆ",
A = "Â", a = "â",
C = "Ĉ", c = "ĉ",
E = "Ê", e = "ê",
G = "Ĝ", g = "ĝ",
H = "Ĥ", h = "ĥ",
I = "Î", i = "î", ["ı"] = "î",
J = "Ĵ", j = "ĵ",
O = "Ô", o = "ô",
S = "Ŝ", s = "ŝ",
U = "Û", u = "û",
W = "Ŵ", w = "ŵ",
Y = "Ŷ", y = "ŷ",
},
["`"] = { [""] = "`",
A = "À", a = "à",
E = "È", e = "è",
I = "Ì", i = "ì", ["ı"] = "ì",
O = "Ò", o = "ò",
U = "Ù", u = "ù",
Y = "Ỳ", y = "ỳ",
},
["c"] = { [""] = "¸",
C = "Ç", c = "ç",
K = "Ķ", k = "ķ",
L = "Ļ", l = "ļ",
N = "Ņ", n = "ņ",
R = "Ŗ", r = "ŗ",
S = "Ş", s = "ş",
T = "Ţ", t = "ţ",
},
["k"] = { [""] = "˛",
A = "Ą", a = "ą",
E = "Ę", e = "ę",
I = "Į", i = "į",
U = "Ų", u = "ų",
},
["r"] = { [""] = "˚",
A = "Å", a = "å",
U = "Ů", u = "ů",
},
["u"] = { [""] = "˘",
A = "Ă", a = "ă",
E = "Ĕ", e = "ĕ",
G = "Ğ", g = "ğ",
I = "Ĭ", i = "ĭ", ["ı"] = "ĭ",
O = "Ŏ", o = "ŏ",
U = "Ŭ", u = "ŭ",
},
["v"] = { [""] = "ˇ",
C = "Č", c = "č",
D = "Ď", d = "ď",
E = "Ě", e = "ě",
L = "Ľ", l = "ľ",
N = "Ň", n = "ň",
R = "Ř", r = "ř",
S = "Š", s = "š",
T = "Ť", t = "ť",
Z = "Ž", z = "ž",
},
["~"] = { [""] = "˜",
A = "Ã", a = "ã",
I = "Ĩ", i = "ĩ", ["ı"] = "ĩ",
N = "Ñ", n = "ñ",
O = "Õ", o = "õ",
U = "Ũ", u = "ũ",
},
}
characters.tex.accentmapping = accentmapping
local accent_map = allocate { -- incomplete
['~'] = "̃" , -- ̃ Ẽ
['"'] = "̈" , -- ̈ Ë
["`"] = "̀" , -- ̀ È
["'"] = "́" , -- ́ É
["^"] = "̂" , -- ̂ Ê
-- ̄ Ē
-- ̆ Ĕ
-- ̇ Ė
-- ̉ Ẻ
-- ̌ Ě
-- ̏ Ȅ
-- ̑ Ȇ
-- ̣ Ẹ
-- ̧ Ȩ
-- ̨ Ę
-- ̭ Ḙ
-- ̰ Ḛ
}
local accents = table.concat(table.keys(accent_map))
local function remap_accents(a,c,braced)
local m = accent_map[a]
if m then
return c .. m
elseif braced then
return "\\" .. a .. "{" .. c .. "}"
else
return "\\" .. a .. c
end
end
local command_map = allocate {
["i"] = "ı"
}
local function remap_commands(c)
local m = command_map[c]
if m then
return m
else
return "\\" .. c
end
end
local accents = (P('\\') * C(S(accents)) * (P("{") * C(U) * P("}" * Cc(true)) + C(U) * Cc(false))) / remap_accents
local commands = (P('\\') * C(R("az","AZ")^1)) / remap_commands
local convert_accents = Cs((accents + P(1))^0)
local convert_commands = Cs((commands + P(1))^0)
local no_l = P("{") / ""
local no_r = P("}") / ""
local convert_accents_strip = Cs((no_l * accents * no_r + accents + P(1))^0)
local convert_commands_strip = Cs((no_l * commands * no_r + commands + P(1))^0)
function characters.tex.toutf(str,strip)
if find(str,"\\") then -- we can start at the found position
if strip then
return lpegmatch(convert_accents_strip,lpegmatch(convert_commands_strip,str))
else
return lpegmatch(convert_accents, lpegmatch(convert_commands, str))
end
end
return str
end
--~ print(characters.tex.toutf([[\"{e}]]),true)
--~ print(characters.tex.toutf([[{\"{e}}]],true))
function characters.tex.defineaccents()
for accent, group in next, accentmapping do
context.dodefineaccentcommand(accent)
for character, mapping in next, group do
context.dodefineaccent(accent,character,mapping)
end
end
end
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