86 lines
2.2 KiB
Lua
86 lines
2.2 KiB
Lua
-- Strips any kind of escape codes (translation, colors) from a string
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-- https://github.com/minetest/minetest/blob/53dd7819277c53954d1298dfffa5287c306db8d0/src/util/string.cpp#L777
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local function strip_escapes(input)
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local s = function(idx) return input:sub(idx, idx) end
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local out = ""
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local i = 1
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while i <= #input do
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if s(i) == "\027" then -- escape sequence
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i = i + 1
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if s(i) == "(" then -- enclosed
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i = i + 1
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while i <= #input and s(i) ~= ")" do
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if s(i) == "\\" then
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i = i + 2
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else
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i = i + 1
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end
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end
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end
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else
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out = out .. s(i)
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end
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i = i + 1
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end
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--print(("%q -> %q"):format(input, out))
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return out
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end
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local function string_endswith(full, part)
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return full:find(part, 1, true) == #full - #part + 1
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end
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local description_cache = nil
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-- normalizes node "description" `nodename`, returning a string (or nil)
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worldedit.normalize_nodename = function(nodename)
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nodename = nodename:gsub("^%s*(.-)%s*$", "%1") -- strip spaces
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if nodename == "" then return nil end
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local fullname = ItemStack({name=nodename}):get_name() -- resolve aliases
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if minetest.registered_nodes[fullname] or fullname == "air" then -- full name
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return fullname
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end
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nodename = nodename:lower()
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for key, _ in pairs(minetest.registered_nodes) do
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if string_endswith(key:lower(), ":" .. nodename) then -- matches name (w/o mod part)
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return key
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end
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end
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if description_cache == nil then
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-- cache stripped descriptions
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description_cache = {}
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for key, value in pairs(minetest.registered_nodes) do
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local desc = strip_escapes(value.description):gsub("\n.*", "", 1):lower()
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if desc ~= "" then
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description_cache[key] = desc
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end
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end
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end
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for key, desc in pairs(description_cache) do
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if desc == nodename then -- matches description
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return key
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end
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end
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for key, desc in pairs(description_cache) do
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if desc == nodename .. " block" then
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-- fuzzy description match (e.g. "Steel" == "Steel Block")
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return key
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end
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end
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local match = nil
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for key, value in pairs(description_cache) do
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if value:find(nodename, 1, true) ~= nil then
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if match ~= nil then
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return nil
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end
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match = key -- substring description match (only if no ambiguities)
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end
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end
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return match
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end
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