Minetest-WorldEditAdditions/worldeditadditions_commands/commands/meta/nodeapply.lua

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local wea_c = worldeditadditions_core
local Vector3 = wea_c.Vector3
--- Performs initial parsing of params_text for //nodeapply.
-- @param params_text string The arguments to //nodeapply to parse.
-- @returns bool,string,string,string? 1. Success bool (true = success)
-- 2. Error message if success bool == false, otherwise the string from before the delimiter
-- 3. The command name
-- 4. Any arguments to pass to the child command
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local function extract_parts(params_text)
-- 1: Find delimiter
local index, _, match = string.find(params_text, "(%s+--%s+)")
if index == nil then
return false, "Error: Could not find double-dash ( -- ) separator. Please ensure the double dashes have at least 1 whitespace character either side."
end
-- 2: Split into before / after delimiter
local before = params_text:sub(1, index)
local after = params_text:sub(index + match:len())
-- 3: Wrangle command name and optional args
local cmd_name, args_text = string.match(after, "([^%s]+)%s+(.+)")
if not cmd_name then
cmd_name = after
args_text = ""
end
-- 4: Return
return true, before, cmd_name, args_text
end
-- ███ ██ ██████ ██████ ███████ █████ ██████ ██████ ██ ██ ██
-- ████ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
-- ██ ██ ██ ██ ██ ██ ██ █████ ███████ ██████ ██████ ██ ████
-- ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
-- ██ ████ ██████ ██████ ███████ ██ ██ ██ ██ ███████ ██
worldeditadditions_core.register_command("nodeapply", {
params = "<node_a> [<node_b>] [... <node_N>] -- <command_name> <args>",
description = "Executes the given command (automatically prepending '//'), but filters the output so only changes that affect the specified list of nodes are kept. Special node names: airlike, liquidlike.",
privs = { worldedit = true },
require_pos = 2,
parse = function(params_text)
if params_text == "" then return false, "Error: No command specified." end
--- 0: Break the args apart
local success, before, cmd_name, args_text = extract_parts(params_text)
-- local cmd_name, args_text = params_text:match("([^%s]+)%s+(.+)")
if not success then return success, before end
--- 1: Parse the node list
local parts = wea_c.split_shell(before)
local nodelist = {}
for i,part in ipairs(parts) do
if part == "airlike" or part == "liquidlike" then
table.insert(nodelist, part)
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elseif part:sub(1, 1) == "@" then
-- Groups start with an @
table.insert(nodelist, part)
else
local nodeid = worldedit.normalize_nodename(part)
if not nodeid then
return false, "Error: Unknown node name '"..part.."' at position "..tostring(i).." in node list."
end
table.insert(nodelist, nodeid)
end
end
--- 2: Parse the cmdname & args
-- Note that we search the worldedit commands here, not the minetest ones
local cmd_we = wea_c.fetch_command_def(cmd_name)
if cmd_we == nil then
return false, "Error: "..cmd_name.." isn't a valid command."
end
if cmd_we.require_pos ~= 2 and cmd_name ~= "multi" then
return false, "Error: The command "..cmd_name.." exists, but doesn't take 2 positions and so can't be used with //airapply ('cause we can't tell how big the area is that it replaces)."
end
-- 3: Get target command to parse args
-- Lifted from cubeapply in WorldEdit
local args_parsed = { cmd_we.parse(args_text) }
if not table.remove(args_parsed, 1) then
return false, args_parsed[1]
end
return true, nodelist, cmd_we, args_parsed
end,
nodes_needed = function(name)
return worldedit.volume(
worldedit.pos1[name],
worldedit.pos2[name]
)
end,
func = function(name, nodelist, cmd, args_parsed)
if not minetest.check_player_privs(name, cmd.privs) then
return false, "Your privileges are insufficient to execute the command '"..cmd.."'."
end
local pos1, pos2 = Vector3.sort(
worldedit.pos1[name],
worldedit.pos2[name]
)
local success, stats = worldeditadditions.nodeapply(
pos1, pos2,
nodelist,
function()
cmd.func(name, wea_c.table.unpack(args_parsed))
end
)
if not success then return success, stats end
local time_overhead = 100 - wea_c.round((stats.fn / stats.all) * 100, 3)
local text_time_all = wea_c.format.human_time(stats.all)
local text_time_fn = wea_c.format.human_time(stats.fn)
minetest.log("action", name.." used //nodeapply at "..pos1.." - "..pos2.." in "..text_time_all)
return true, tostring(stats.allowed_changes).." changes allowed, "..tostring(stats.denied_changes).." filtered in "..text_time_all.." ("..text_time_fn.." fn, "..time_overhead.."% nodeapply overhead)"
end
})