1 // Copyright 2021 The TCell Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use file except in compliance with the License. 5 // You may obtain a copy of the license at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 //go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris || zos 16 // +build aix darwin dragonfly freebsd linux netbsd openbsd solaris zos 17 18 package tcell 19 20 // initialize is used at application startup, and sets up the initial values 21 // including file descriptors used for terminals and saving the initial state 22 // so that it can be restored when the application terminates. 23 func (t *tScreen) initialize() error { 24 var err error 25 if t.tty == nil { 26 t.tty, err = NewDevTty() 27 if err != nil { 28 return err 29 } 30 } 31 return nil 32 } 33