LibTrinityCore-1.0 is a library for the World of Warcraft client that integrates with the TrinityCore server software. It provides a Lua interface that allows addon code to interact with server commands in an easy fashion.

isTrinityCore = LibStub("LibTrinityCore-1.0"):IsTrinityCore()

Returns true if the server is a supported TrinityCore build, false if not, and nil if testing is incomplete

LibStub("LibTrinityCore-1.0"):RegisterLoader(callback)

Registers the passed callback to be called once TrinityCore detection finishes. This method might call your loader before returning, or asynchronously at any later point. Once the loader is called, IsTrinityCore() is guaranteed to return either true or false (never nil).

LibStub("LibTrinityCore-1.0"):DoCommand(cmd, callback)

Invokes cmd on the server. Commands should be passed without leading command prefix (no . or !). When command execution finishes, callback will be invoked as callback(success, output). success is a boolean indicating whether the command's execution reported any errors, while output is an array of lines that the command printed.

-- get library object - all calls are made through this object
local LibTrinity = LibStub("LibTrinityCore-1.0")
assert(LibTrinity)

-- define a command callback function
local function commandCallback(success, output)
  print("Command status: ", success and "OK" or "Fail")
  if #output > 0 then
    print("Command output:")
    for _,line in ipairs(output) do
      print(line)
    end
  else
    print("Command produced no output")
  end
end
  
-- then invoke the "server motd" and "server info" commands
LibTrinity:DoCommand("server motd", commandCallback)
LibTrinity:DoCommand("server info", commandCallback)