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