modlib/minetest/texmod.lua

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-- Texture Modifier representation for building, parsing and stringifying texture modifiers according to
-- https://github.com/minetest/minetest_docs/blob/master/doc/texture_modifiers.adoc
local function component(component_name, ...)
return assert(loadfile(modlib.mod.get_resource(modlib.modname, "minetest", "texmod", component_name .. ".lua")))(...)
end
local texmod, metatable = component"dsl"
local methods = metatable.__index
methods.write = component"write"
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texmod.read = component("read", texmod)
methods.calc_dims = component"calc_dims"
methods.gen_tex = component"gen_tex"
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function metatable:__tostring()
local rope = {}
self:write(function(str) rope[#rope+1] = str end)
return table.concat(rope)
end
function texmod.read_string(str, warn --[[function(warn_str)]])
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local i = 0
return texmod.read(function()
i = i + 1
if i > #str then return end
return str:sub(i, i)
end, warn)
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end
return texmod