Module:Unicode data/category/doc
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Revision as of 18:31, 16 September 2019 by blackwiki>Erutuon (note)
This is the documentation page for Module:Unicode data/category
Unicode General Category data derived from DerivedGeneralCategory.txt in the Unicode Character Database. The category Cn (Unassigned) is omitted because it is the default for characters not assigned to another category.
The data was generated by the two Lua 5.3 scripts below. LPeg is required. If the two scripts are in the same folder as DerivedGeneralCategory.txt, all one has to do is go to the directory with the command line and type lua print_data.lua to print the data to data.lua.
Lua 5.3 scripts
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local f = assert(io.open 'DerivedGeneralCategory.txt', 'r')
local Derived_General_Category = f:read 'a'
f:close()
local lpeg = require 'lpeg'
for k, v in pairs(lpeg) do
if type(k) == 'string' then
local first_letter = k:sub(1, 1)
if first_letter == first_letter:upper() then
_ENV[k] = v
end
end
end
local General_Category_data = { singles = {}, ranges = {} }
local function process_match(str, pos, ...)
if select(3, ...) then -- three arguments: XXXX..XXXX ; gc
local low, high, category = ...
if category ~= 'Cn' then
low, high = tonumber(low, 16), tonumber(high, 16)
table.insert(General_Category_data.ranges, { low, high, category })
end
else -- two arguments: XXXX ; gc
local codepoint, category = ...
if category ~= 'Cn' then
codepoint = tonumber(codepoint, 16)
General_Category_data.singles[codepoint] = category
end
end
return pos
end
local patt = P {
(V 'line' + 1)^1,
line = Cmt((V 'range' + C(V 'codepoint')) * V 'white' * P ';' * V 'white' * C(V 'gc') * (1 - V 'nl')^0,
process_match),
range = C(V 'codepoint') * P '..' * C(V 'codepoint'),
codepoint = V 'hex' * V 'hex' * V 'hex' * V 'hex' * V 'hex'^-2,
gc = R 'AZ' * P(1),
hex = R("09", "AF"),
white = S ' \t'^0,
nl = P '\r'^-1 * P '\n',
}
patt:match(Derived_General_Category)
return General_Category_data
local data_filename = [[make_data.lua]]
local data = dofile(data_filename)
local output_filename = [[data.lua]]
local output = assert(io.open(output_filename, 'w'))
local function writef(...)
output:write(string.format(...))
end
writef [[
return {
singles = {
]]
-- Check that maximum "singles" codepoint is less than 0x100000?
for codepoint, category in require 't'.spairs(data.singles) do
writef('\t\t[0x%05X] = "%s",\n', codepoint, category)
end
writef [[
},
ranges = {
]]
local function compare_ranges(range1, range2)
return range1[1] < range2[1]
end
table.sort(data.ranges, compare_ranges)
for _, range in ipairs(data.ranges) do
writef('\t\t{ 0x%06X, 0x%06X, "%s" },\n', table.unpack(range))
end
writef [[
},
}]]
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