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main.go
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package main
import (
"fmt"
"os"
"github.com/gdamore/tcell"
)
var (
Events = make(chan tcell.Event)
screen tcell.Screen = nil
screenWidth int
screenHeight int
line_len int
)
func main() {
os.Exit(run(os.Args))
}
func run(args []string) int {
if len(args) != 2 {
fmt.Fprint(os.Stderr, "Usage: gky <filename>\n")
return 1
}
if err := initScreen(); err != nil {
fmt.Fprintln(os.Stderr, err)
return 1
}
defer screen.Fini()
initEvent()
b, err := initBuffer(args[1])
if err != nil {
fmt.Fprintln(os.Stderr, err)
return 1
}
view := NewView(b)
if err := view.Init(); err != nil {
fmt.Fprintln(os.Stderr, err)
return 1
}
loop:
for {
select {
case ev := <-Events:
switch ev := ev.(type) {
case *tcell.EventKey:
if ev.Key() == tcell.KeyCtrlQ {
if !view.buf.exist {
os.Remove(view.buf.path)
}
break loop
} else if err := view.EventHandle(ev); err != nil {
fmt.Fprintln(os.Stderr, err)
break loop
}
case *tcell.EventResize:
screenWidth, screenHeight = ev.Size()
view.buf.Render(0)
}
}
}
return 0
}