Hilbish/golibs/terminal/terminal.go

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package terminal
import (
"os"
"hilbish/util"
"golang.org/x/term"
"github.com/yuin/gopher-lua"
)
var termState *term.State
func Loader(L *lua.LState) int {
mod := L.SetFuncs(L.NewTable(), exports)
util.Document(L, mod, "The terminal library is a simple and lower level library for certain terminal interactions.")
L.Push(mod)
return 1
}
var exports = map[string]lua.LGFunction{
"setRaw": termraw,
"restoreState": termrestoreState,
"size": termsize,
"saveState": termsaveState,
}
// 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(L *lua.LState) int {
w, h, err := term.GetSize(int(os.Stdin.Fd()))
if err != nil {
L.RaiseError(err.Error())
return 0
}
dimensions := L.NewTable()
L.SetField(dimensions, "width", lua.LNumber(w))
L.SetField(dimensions, "height", lua.LNumber(h))
L.Push(dimensions)
return 1
}
// saveState()
// Saves the current state of the terminal
func termsaveState(L *lua.LState) int {
state, err := term.GetState(int(os.Stdin.Fd()))
if err != nil {
L.RaiseError(err.Error())
return 0
}
termState = state
return 0
}
// restoreState()
// Restores the last saved state of the terminal
func termrestoreState(L *lua.LState) int {
err := term.Restore(int(os.Stdin.Fd()), termState)
if err != nil {
L.RaiseError(err.Error())
}
return 0
}
// setRaw()
// Puts the terminal in raw mode
func termraw(L *lua.LState) int {
_, err := term.MakeRaw(int(os.Stdin.Fd()))
if err != nil {
L.RaiseError(err.Error())
}
return 0
}