Minetest-WorldEditAdditions/worldeditadditions/utils/strings/tochars.lua

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--- Split into table of characters.
-- @param text string The string to iterate over
-- @param sort bool Sort characters
-- @param rem_dups bool Remove duplicate characters
-- @returns table A sequence table containing the substrings
function worldeditadditions.tochars(text,sort,rem_dups)
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local t, set = {}, {}
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if rem_dups then
text:gsub(".",function(c) set[c] = true end)
for k,v in pairs(set) do table.insert(t,k) end
else
text:gsub(".",function(c) table.insert(t,c) end)
end
if sort then table.sort(t) end
return t
end
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--- Split into a set of characters.
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-- @param text string The string to iterate over
-- @returns table A sequence set table containing the substrings
function worldeditadditions.tocharset(text)
local t = {}
text:gsub(".",function(c) t[c] = true end)
return t
end