mirror of
https://github.com/minetest/minetest.git
synced 2024-11-14 03:33:44 +01:00
244 lines
5.9 KiB
Lua
244 lines
5.9 KiB
Lua
-- Minetest: builtin/misc_helpers.lua
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--------------------------------------------------------------------------------
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function basic_dump2(o)
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if type(o) == "number" then
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return tostring(o)
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elseif type(o) == "string" then
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return string.format("%q", o)
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elseif type(o) == "boolean" then
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return tostring(o)
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elseif type(o) == "function" then
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return "<function>"
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elseif type(o) == "userdata" then
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return "<userdata>"
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elseif type(o) == "nil" then
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return "nil"
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else
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error("cannot dump a " .. type(o))
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return nil
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end
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end
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--------------------------------------------------------------------------------
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function dump2(o, name, dumped)
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name = name or "_"
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dumped = dumped or {}
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io.write(name, " = ")
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if type(o) == "number" or type(o) == "string" or type(o) == "boolean"
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or type(o) == "function" or type(o) == "nil"
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or type(o) == "userdata" then
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io.write(basic_dump2(o), "\n")
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elseif type(o) == "table" then
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if dumped[o] then
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io.write(dumped[o], "\n")
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else
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dumped[o] = name
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io.write("{}\n") -- new table
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for k,v in pairs(o) do
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local fieldname = string.format("%s[%s]", name, basic_dump2(k))
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dump2(v, fieldname, dumped)
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end
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end
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else
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error("cannot dump a " .. type(o))
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return nil
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end
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end
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--------------------------------------------------------------------------------
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function dump(o, dumped)
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dumped = dumped or {}
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if type(o) == "number" then
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return tostring(o)
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elseif type(o) == "string" then
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return string.format("%q", o)
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elseif type(o) == "table" then
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if dumped[o] then
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return "<circular reference>"
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end
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dumped[o] = true
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local t = {}
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for k,v in pairs(o) do
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t[#t+1] = "[" .. dump(k, dumped) .. "] = " .. dump(v, dumped)
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end
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return "{" .. table.concat(t, ", ") .. "}"
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elseif type(o) == "boolean" then
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return tostring(o)
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elseif type(o) == "function" then
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return "<function>"
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elseif type(o) == "userdata" then
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return "<userdata>"
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elseif type(o) == "nil" then
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return "nil"
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else
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error("cannot dump a " .. type(o))
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return nil
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end
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end
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--------------------------------------------------------------------------------
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function string:split(sep)
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local sep, fields = sep or ",", {}
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local pattern = string.format("([^%s]+)", sep)
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self:gsub(pattern, function(c) fields[#fields+1] = c end)
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return fields
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end
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--------------------------------------------------------------------------------
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function string:trim()
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return (self:gsub("^%s*(.-)%s*$", "%1"))
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end
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assert(string.trim("\n \t\tfoo bar\t ") == "foo bar")
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--------------------------------------------------------------------------------
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function math.hypot(x, y)
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local t
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x = math.abs(x)
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y = math.abs(y)
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t = math.min(x, y)
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x = math.max(x, y)
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if x == 0 then return 0 end
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t = t / x
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return x * math.sqrt(1 + t * t)
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end
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--------------------------------------------------------------------------------
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function explode_textlist_event(text)
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local retval = {}
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retval.typ = "INV"
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local parts = text:split(":")
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if #parts == 2 then
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retval.typ = parts[1]:trim()
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retval.index= tonumber(parts[2]:trim())
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if type(retval.index) ~= "number" then
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retval.typ = "INV"
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end
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end
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return retval
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end
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--------------------------------------------------------------------------------
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function get_last_folder(text,count)
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local parts = text:split(DIR_DELIM)
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if count == nil then
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return parts[#parts]
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end
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local retval = ""
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for i=1,count,1 do
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retval = retval .. parts[#parts - (count-i)] .. DIR_DELIM
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end
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return retval
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end
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--------------------------------------------------------------------------------
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function cleanup_path(temppath)
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local parts = temppath:split("-")
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temppath = ""
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for i=1,#parts,1 do
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if temppath ~= "" then
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temppath = temppath .. "_"
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end
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temppath = temppath .. parts[i]
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end
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parts = temppath:split(".")
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temppath = ""
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for i=1,#parts,1 do
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if temppath ~= "" then
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temppath = temppath .. "_"
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end
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temppath = temppath .. parts[i]
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end
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parts = temppath:split("'")
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temppath = ""
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for i=1,#parts,1 do
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if temppath ~= "" then
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temppath = temppath .. ""
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end
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temppath = temppath .. parts[i]
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end
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parts = temppath:split(" ")
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temppath = ""
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for i=1,#parts,1 do
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if temppath ~= "" then
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temppath = temppath
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end
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temppath = temppath .. parts[i]
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end
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return temppath
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end
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--------------------------------------------------------------------------------
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-- mainmenu only functions
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--------------------------------------------------------------------------------
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if engine ~= nil then
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engine.get_game = function(index)
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local games = game.get_games()
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if index > 0 and index <= #games then
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return games[index]
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end
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return nil
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end
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--------------------------------------------------------------------------------
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function fs_escape_string(text)
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if text ~= nil then
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while (text:find("\r\n") ~= nil) do
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local newtext = text:sub(1,text:find("\r\n")-1)
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newtext = newtext .. " " .. text:sub(text:find("\r\n")+3)
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text = newtext
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end
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while (text:find("\n") ~= nil) do
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local newtext = text:sub(1,text:find("\n")-1)
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newtext = newtext .. " " .. text:sub(text:find("\n")+1)
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text = newtext
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end
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while (text:find("\r") ~= nil) do
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local newtext = text:sub(1,text:find("\r")-1)
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newtext = newtext .. " " .. text:sub(text:find("\r")+1)
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text = newtext
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end
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text = string.gsub(text,"\\","\\\\")
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text = string.gsub(text,"%]","\\]")
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text = string.gsub(text,"%[","\\[")
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text = string.gsub(text,";","\\;")
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text = string.gsub(text,",","\\,")
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end
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return text
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end
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end
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--------------------------------------------------------------------------------
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-- core only fct
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--------------------------------------------------------------------------------
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if minetest ~= nil then
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--------------------------------------------------------------------------------
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function minetest.pos_to_string(pos)
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return "(" .. pos.x .. "," .. pos.y .. "," .. pos.z .. ")"
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end
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end
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