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-- Minetest: builtin/misc_helpers.lua
--------------------------------------------------------------------------------
function basic_dump2(o)
if type(o) == "number" then
return tostring(o)
elseif type(o) == "string" then
return string.format("%q", o)
elseif type(o) == "boolean" then
return tostring(o)
elseif type(o) == "function" then
return "<function>"
elseif type(o) == "userdata" then
return "<userdata>"
elseif type(o) == "nil" then
return "nil"
else
error("cannot dump a " .. type(o))
return nil
end
end
--------------------------------------------------------------------------------
function dump2(o, name, dumped)
name = name or "_"
dumped = dumped or {}
io.write(name, " = ")
if type(o) == "number" or type(o) == "string" or type(o) == "boolean"
or type(o) == "function" or type(o) == "nil"
or type(o) == "userdata" then
io.write(basic_dump2(o), "\n")
elseif type(o) == "table" then
if dumped[o] then
io.write(dumped[o], "\n")
else
dumped[o] = name
io.write("{}\n") -- new table
for k,v in pairs(o) do
local fieldname = string.format("%s[%s]", name, basic_dump2(k))
dump2(v, fieldname, dumped)
end
end
else
error("cannot dump a " .. type(o))
return nil
end
end
--------------------------------------------------------------------------------
function dump(o, dumped)
dumped = dumped or {}
if type(o) == "number" then
return tostring(o)
elseif type(o) == "string" then
return string.format("%q", o)
elseif type(o) == "table" then
if dumped[o] then
return "<circular reference>"
end
dumped[o] = true
local t = {}
for k,v in pairs(o) do
t[#t+1] = "[" .. dump(k, dumped) .. "] = " .. dump(v, dumped)
end
return "{" .. table.concat(t, ", ") .. "}"
elseif type(o) == "boolean" then
return tostring(o)
elseif type(o) == "function" then
return "<function>"
elseif type(o) == "userdata" then
return "<userdata>"
elseif type(o) == "nil" then
return "nil"
else
error("cannot dump a " .. type(o))
return nil
end
end
--------------------------------------------------------------------------------
function string:split(sep)
local sep, fields = sep or ",", {}
local pattern = string.format("([^%s]+)", sep)
self:gsub(pattern, function(c) fields[#fields+1] = c end)
return fields
end
--------------------------------------------------------------------------------
function file_exists(filename)
local f = io.open(filename, "r")
if f==nil then
return false
else
f:close()
return true
end
end
--------------------------------------------------------------------------------
function string:trim()
return (self:gsub("^%s*(.-)%s*$", "%1"))
end
assert(string.trim("\n \t\tfoo bar\t ") == "foo bar")
--------------------------------------------------------------------------------
function math.hypot(x, y)
local t
x = math.abs(x)
y = math.abs(y)
t = math.min(x, y)
x = math.max(x, y)
if x == 0 then return 0 end
t = t / x
return x * math.sqrt(1 + t * t)
end
--------------------------------------------------------------------------------
function explode_textlist_event(text)
local retval = {}
retval.typ = "INV"
local parts = text:split(":")
if #parts == 2 then
retval.typ = parts[1]:trim()
retval.index= tonumber(parts[2]:trim())
if type(retval.index) ~= "number" then
retval.typ = "INV"
end
end
return retval
end
--------------------------------------------------------------------------------
function get_last_folder(text,count)
local parts = text:split(DIR_DELIM)
if count == nil then
return parts[#parts]
end
local retval = ""
for i=1,count,1 do
retval = retval .. parts[#parts - (count-i)] .. DIR_DELIM
end
return retval
end
--------------------------------------------------------------------------------
function cleanup_path(temppath)
local parts = temppath:split("-")
temppath = ""
for i=1,#parts,1 do
if temppath ~= "" then
temppath = temppath .. "_"
end
temppath = temppath .. parts[i]
end
parts = temppath:split(".")
temppath = ""
for i=1,#parts,1 do
if temppath ~= "" then
temppath = temppath .. "_"
end
temppath = temppath .. parts[i]
end
parts = temppath:split("'")
temppath = ""
for i=1,#parts,1 do
if temppath ~= "" then
temppath = temppath .. ""
end
temppath = temppath .. parts[i]
end
parts = temppath:split(" ")
temppath = ""
for i=1,#parts,1 do
if temppath ~= "" then
temppath = temppath
end
temppath = temppath .. parts[i]
end
return temppath
end
local tbl = engine or minetest
function tbl.formspec_escape(text)
if text ~= nil then
text = string.gsub(text,"\\","\\\\")
text = string.gsub(text,"%]","\\]")
text = string.gsub(text,"%[","\\[")
text = string.gsub(text,";","\\;")
text = string.gsub(text,",","\\,")
end
return text
end
--------------------------------------------------------------------------------
-- mainmenu only functions
--------------------------------------------------------------------------------
if engine ~= nil then
engine.get_game = function(index)
local games = game.get_games()
if index > 0 and index <= #games then
return games[index]
end
return nil
end
function fgettext(text, ...)
text = engine.gettext(text)
local arg = {n=select('#', ...), ...}
if arg.n >= 1 then
-- Insert positional parameters ($1, $2, ...)
result = ''
pos = 1
while pos <= text:len() do
newpos = text:find('[$]', pos)
if newpos == nil then
result = result .. text:sub(pos)
pos = text:len() + 1
else
paramindex = tonumber(text:sub(newpos+1, newpos+1))
result = result .. text:sub(pos, newpos-1) .. tostring(arg[paramindex])
pos = newpos + 2
end
end
text = result
end
return engine.formspec_escape(text)
end
end
--------------------------------------------------------------------------------
-- core only fct
--------------------------------------------------------------------------------
if minetest ~= nil then
--------------------------------------------------------------------------------
function minetest.pos_to_string(pos)
return "(" .. pos.x .. "," .. pos.y .. "," .. pos.z .. ")"
end
end
|
