dfhack/scripts/lua.lua

92 lines
2.4 KiB
Lua

-- Execute lua commands interactively or from files.
--[[=begin
lua
===
There are the following ways to invoke this command:
1. ``lua`` (without any parameters)
This starts an interactive lua interpreter.
2. ``lua -f "filename"`` or ``lua --file "filename"``
This loads and runs the file indicated by filename.
3. ``lua -s ["filename"]`` or ``lua --save ["filename"]``
This loads and runs the file indicated by filename from the save
directory. If the filename is not supplied, it loads "dfhack.lua".
4. ``:lua`` *lua statement...*
Parses and executes the lua statement like the interactive interpreter would.
=end]]
local args={...}
local cmd = args[1]
env = env or {}
setmetatable(env, {__index = function(self, k)
if k == 'scr' or k == 'screen' then
return dfhack.gui.getCurViewscreen()
elseif k == 'bld' or k == 'building' then
return dfhack.gui.getSelectedBuilding()
elseif k == 'item' then
return dfhack.gui.getSelectedItem()
elseif k == 'job' then
return dfhack.gui.getSelectedJob()
elseif k == 'wsjob' or k == 'workshop_job' then
return dfhack.gui.getSelectedWorkshopJob()
elseif k == 'unit' then
return dfhack.gui.getSelectedUnit()
else
return _G[k]
end
end})
if cmd=="--file" or cmd=="-f" then
local f,err=loadfile (args[2])
if f==nil then
qerror(err)
end
dfhack.safecall(f,table.unpack(args,3))
elseif cmd=="--save" or cmd=="-s" then
if df.global.world.cur_savegame.save_dir=="" then
qerror("Savefile not loaded")
end
local fname=args[2] or "dfhack.lua"
fname=string.format("data/save/%s/%s",df.global.world.cur_savegame.save_dir,fname)
local f,err=loadfile (fname)
if f==nil then
qerror(err)
end
dfhack.safecall(f,table.unpack(args,3))
elseif cmd~=nil then
-- Support some of the prefixes allowed by dfhack.interpreter
local prefix
if string.match(cmd, "^[~@!]") then
prefix = string.sub(cmd, 1, 1)
cmd = 'return '..string.sub(cmd, 2)
end
local f,err=load(cmd,'=(lua command)', 't')
if f==nil then
qerror(err)
end
local rv = table.pack(dfhack.safecall(f,table.unpack(args,2)))
if rv[1] and prefix then
print(table.unpack(rv,2,rv.n))
if prefix == '~' then
printall(rv[2])
elseif prefix == '@' then
printall_ipairs(rv[2])
end
end
else
dfhack.interpreter("lua","lua.history",env)
end