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encoding.lua
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encoding.lua
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-- encoding borrowed from signs_lib fork at https://github.com/lord-server/lord
-- The "ANSI" encoding here actually refers to "windows-1251", which shows up as
-- "ANSI" on Russian version of MS Windows
local ansi_decode = {
[128] = "\208\130",
[129] = "\208\131",
[130] = "\226\128\154",
[131] = "\209\147",
[132] = "\226\128\158",
[133] = "\226\128\166",
[134] = "\226\128\160",
[135] = "\226\128\161",
[136] = "\226\130\172",
[137] = "\226\128\176",
[138] = "\208\137",
[139] = "\226\128\185",
[140] = "\208\138",
[141] = "\208\140",
[142] = "\208\139",
[143] = "\208\143",
[144] = "\209\146",
[145] = "\226\128\152",
[146] = "\226\128\153",
[147] = "\226\128\156",
[148] = "\226\128\157",
[149] = "\226\128\162",
[150] = "\226\128\147",
[151] = "\226\128\148",
[152] = "\194\152",
[153] = "\226\132\162",
[154] = "\209\153",
[155] = "\226\128\186",
[156] = "\209\154",
[157] = "\209\156",
[158] = "\209\155",
[159] = "\209\159",
[160] = "\194\160",
[161] = "\209\142",
[162] = "\209\158",
[163] = "\208\136",
[164] = "\194\164",
[165] = "\210\144",
[166] = "\194\166",
[167] = "\194\167",
[168] = "\208\129",
[169] = "\194\169",
[170] = "\208\132",
[171] = "\194\171",
[172] = "\194\172",
[173] = "\194\173",
[174] = "\194\174",
[175] = "\208\135",
[176] = "\194\176",
[177] = "\194\177",
[178] = "\208\134",
[179] = "\209\150",
[180] = "\210\145",
[181] = "\194\181",
[182] = "\194\182",
[183] = "\194\183",
[184] = "\209\145",
[185] = "\226\132\150",
[186] = "\209\148",
[187] = "\194\187",
[188] = "\209\152",
[189] = "\208\133",
[190] = "\209\149",
[191] = "\209\151"
}
local utf8_decode = {
[128] = {
[147] = "\150",
[148] = "\151",
[152] = "\145",
[153] = "\146",
[154] = "\130",
[156] = "\147",
[157] = "\148",
[158] = "\132",
[160] = "\134",
[161] = "\135",
[162] = "\149",
[166] = "\133",
[176] = "\137",
[185] = "\139",
[186] = "\155"
},
[130] = {[172] = "\136"},
[132] = {[150] = "\185", [162] = "\153"},
[194] = {
[152] = "\152",
[160] = "\160",
[164] = "\164",
[166] = "\166",
[167] = "\167",
[169] = "\169",
[171] = "\171",
[172] = "\172",
[173] = "\173",
[174] = "\174",
[176] = "\176",
[177] = "\177",
[181] = "\181",
[182] = "\182",
[183] = "\183",
[187] = "\187"
},
[208] = {
[129] = "\168",
[130] = "\128",
[131] = "\129",
[132] = "\170",
[133] = "\189",
[134] = "\178",
[135] = "\175",
[136] = "\163",
[137] = "\138",
[138] = "\140",
[139] = "\142",
[140] = "\141",
[143] = "\143",
[144] = "\192",
[145] = "\193",
[146] = "\194",
[147] = "\195",
[148] = "\196",
[149] = "\197",
[150] = "\198",
[151] = "\199",
[152] = "\200",
[153] = "\201",
[154] = "\202",
[155] = "\203",
[156] = "\204",
[157] = "\205",
[158] = "\206",
[159] = "\207",
[160] = "\208",
[161] = "\209",
[162] = "\210",
[163] = "\211",
[164] = "\212",
[165] = "\213",
[166] = "\214",
[167] = "\215",
[168] = "\216",
[169] = "\217",
[170] = "\218",
[171] = "\219",
[172] = "\220",
[173] = "\221",
[174] = "\222",
[175] = "\223",
[176] = "\224",
[177] = "\225",
[178] = "\226",
[179] = "\227",
[180] = "\228",
[181] = "\229",
[182] = "\230",
[183] = "\231",
[184] = "\232",
[185] = "\233",
[186] = "\234",
[187] = "\235",
[188] = "\236",
[189] = "\237",
[190] = "\238",
[191] = "\239"
},
[209] = {
[128] = "\240",
[129] = "\241",
[130] = "\242",
[131] = "\243",
[132] = "\244",
[133] = "\245",
[134] = "\246",
[135] = "\247",
[136] = "\248",
[137] = "\249",
[138] = "\250",
[139] = "\251",
[140] = "\252",
[141] = "\253",
[142] = "\254",
[143] = "\255",
[144] = "\161",
[145] = "\184",
[146] = "\144",
[147] = "\131",
[148] = "\186",
[149] = "\190",
[150] = "\179",
[151] = "\191",
[152] = "\188",
[153] = "\154",
[154] = "\156",
[155] = "\158",
[156] = "\157",
[158] = "\162",
[159] = "\159"
},
[210] = {[144] = "\165", [145] = "\180"}
}
local wide_character_codes = {
}
signs_lib.unicode_install = function(
numbers
)
local scope = utf8_decode
for i = 1,#numbers-2 do
if not scope[numbers[i]] then
scope[numbers[i]] = {}
end
scope = scope[numbers[i]]
end
scope[numbers[#numbers-1]] = "&#x" .. numbers[#numbers] .. ";"
table.insert(
wide_character_codes,
numbers[#numbers]
)
end
signs_lib.unicode_install({38,"26"})
dofile(signs_lib.path.."/nonascii-de.lua")
dofile(signs_lib.path.."/nonascii-fr.lua")
dofile(signs_lib.path.."/nonascii-pl.lua")
local nmdc = {
[36] = "$",
[124] = "|"
}
function signs_lib.AnsiToUtf8(s)
local r, b = ""
for i = 1, s and s:len() or 0 do
b = s:byte(i)
if b < 128 then
r = r .. string.char(b)
else
if b > 239 then
r = r .. "\209" .. string.char(b - 112)
elseif b > 191 then
r = r .. "\208" .. string.char(b - 48)
elseif ansi_decode[b] then
r = r .. ansi_decode[b]
else
r = r .. "_"
end
end
end
return r
end
function signs_lib.Utf8ToAnsi(s)
local r, b = ""
local scope
local j, l, u
for i = 1, s and s:len() or 0 do
b = s:byte(i)
-- legacy parser
if b == 0x26 then
r = r .. "&"
elseif b < 128 then
if nmdc[b] then
r = r .. nmdc[b]
else
r = r .. string.char(b)
end
elseif scope then
if scope[b] then
scope = scope[b]
if "string" == type(scope) then
r, scope = r .. scope, nil
j = -1 -- supress general UTF-8 parser
end
else
scope = nil
end
elseif utf8_decode[b] then
scope = utf8_decode[b]
end
-- general UTF-8 parser
if j == -1 then -- supressed by legacy parser
j = nil
elseif b < 0x80 then
if j then
r = r .. "&#ufffd;"
j = nil
end
-- ASCII handled by legacy parser
elseif b >= 0xc0 then
if j then
r = r .. "&#ufffd;"
end
j = i
if b >= 0xf8 then
r = r .. "&#ufffd;"
j = nil
elseif b >= 0xf0 then
l, u = 4, b % (2 ^ 3)
elseif b >= 0xe0 then
l, u = 3, b % (2 ^ 4)
else
l, u = 2, b % (2 ^ 5)
end
else
if j then
u = u * (2 ^ 6) + b % (2 ^ 6)
if i == j + l - 1 then
r = r .. string.format("&#u%x;", u)
j = nil
end
else
r = r .. "&#ufffd;"
end
end
end
if j then
r = r .. "&#ufffd;"
end
return r
end
signs_lib.wide_character_codes = wide_character_codes
signs_lib.unifont_halfwidth = dofile(signs_lib.path.."/unifont-halfwidth.lua")