/
edit.go
54 lines (46 loc) · 1.1 KB
/
edit.go
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package main
import (
"errors"
"io/ioutil"
"log"
"github.com/nsf/termbox-go"
)
var ErrDontSave = errors.New("don't save")
func edit(data []byte) ([]byte, error) {
err := termbox.Init()
if err != nil {
return nil, err
}
termbox.SetInputMode(termbox.InputAlt)
ui := newUI(data)
go ui.eventLoop()
defer func() {
if r := recover(); r != nil {
f, err := ioutil.TempFile("", "e-save")
if err != nil {
log.Println("editor crashed, but cannot create temp file to save your work, sorry...", err)
} else {
defer f.Close()
_, err := f.Write(toBytes(ui.lines))
if err != nil {
log.Println("editor crashed, but cannot write to temp file to save your work, sorry...", err)
} else {
log.Println("editor crashed, but saved your work in ", f.Name(), ", sorry...")
}
}
panic(r) // break execution in usual way
}
}()
defer termbox.Close() // must be executed before recover above to enable logging
for ui.running {
err = ui.draw()
if err != nil {
return nil, err
}
ui.update()
}
if ui.dontSave {
return nil, ErrDontSave
}
return toBytes(ui.lines), nil
}