package terminal import ( "os" "hilbish/util" rt "github.com/arnodel/golua/runtime" "github.com/arnodel/golua/lib/packagelib" "golang.org/x/term" ) var termState *term.State var Loader = packagelib.Loader{ Load: loaderFunc, Name: "terminal", } func loaderFunc(rtm *rt.Runtime) (rt.Value, func()) { exports := map[string]util.LuaExport{ "setRaw": util.LuaExport{termsetRaw, 0, false}, "restoreState": util.LuaExport{termrestoreState, 0, false}, "size": util.LuaExport{termsize, 0, false}, "saveState": util.LuaExport{termsaveState, 0, false}, } mod := rt.NewTable() util.SetExports(rtm, mod, exports) util.Document(mod, "The terminal library is a simple and lower level library for certain terminal interactions.") return rt.TableValue(mod), nil } // size() // Gets the dimensions of the terminal. Returns a table with `width` and `height` // Note: this is not the size in relation to the dimensions of the display func termsize(t *rt.Thread, c *rt.GoCont) (rt.Cont, error) { w, h, err := term.GetSize(int(os.Stdin.Fd())) if err != nil { return nil, err } dimensions := rt.NewTable() dimensions.Set(rt.StringValue("width"), rt.IntValue(int64(w))) dimensions.Set(rt.StringValue("height"), rt.IntValue(int64(h))) return c.PushingNext1(t.Runtime, rt.TableValue(dimensions)), nil } // saveState() // Saves the current state of the terminal func termsaveState(t *rt.Thread, c *rt.GoCont) (rt.Cont, error) { state, err := term.GetState(int(os.Stdin.Fd())) if err != nil { return nil, err } termState = state return c.Next(), nil } // restoreState() // Restores the last saved state of the terminal func termrestoreState(t *rt.Thread, c *rt.GoCont) (rt.Cont, error) { err := term.Restore(int(os.Stdin.Fd()), termState) if err != nil { return nil, err } return c.Next(), nil } // setRaw() // Puts the terminal in raw mode func termsetRaw(t *rt.Thread, c *rt.GoCont) (rt.Cont, error) { _, err := term.MakeRaw(int(os.Stdin.Fd())) if err != nil { return nil, err } return c.Next(), nil }