35 lines
910 B
Plaintext
Executable File
35 lines
910 B
Plaintext
Executable File
#!/usr/bin/env luajit
|
|
|
|
local bit = require 'bit'
|
|
|
|
local function code_to_utf8(code)
|
|
if code <= 0x7f then
|
|
return string.char(code)
|
|
elseif code <= 0x7ff then
|
|
return string.char(
|
|
bit.bor(0xC0, bit.rshift(code, 6)),
|
|
bit.bor(0x80, bit.band(code, 0x3f))
|
|
)
|
|
elseif code <= 0xffff then
|
|
return string.char(
|
|
bit.bor(0xE0, bit.rshift(code, 12)),
|
|
bit.bor(0x80, bit.band(bit.rshift(code, 6), 0x3f)),
|
|
bit.bor(0x80, bit.band(code, 0x3f))
|
|
)
|
|
elseif code <= 0x10FFFF then
|
|
return string.char(
|
|
bit.bor(0xE0, bit.rshift(code, 18)),
|
|
bit.bor(0x80, bit.band(bit.rshift(code, 12), 0x3f)),
|
|
bit.bor(0x80, bit.band(bit.rshift(code, 06), 0x3f)),
|
|
bit.bor(0x80, bit.band(code, 0x3f))
|
|
)
|
|
else
|
|
error 'Invalid character!'
|
|
end
|
|
end
|
|
|
|
for line in io.stdin:lines() do
|
|
local code = tonumber(line:match('%x+'), 16)
|
|
print(line, code_to_utf8(code))
|
|
end
|