/
loading.go
67 lines (59 loc) · 1.63 KB
/
loading.go
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// Copyright (c) 2021 Terminus, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package loading
import (
"fmt"
"os"
"os/exec"
"strings"
"time"
"github.com/erda-project/erda/pkg/terminal/color_str"
)
var loadingChars = []string{"⠧", "⠶", "⠼", "⠹", "⠛", "⠏"}
var idx int
func Loading(onelineDesc string, f func(), disappearAfterDone bool, eraseCursor bool) {
if eraseCursor {
tput("civis")
defer tput("cvvis")
}
onelineDesc = strings.Replace(onelineDesc, "\n", " ", -1)
c := make(chan struct{})
done := false
f1 := func() {
f()
c <- struct{}{}
}
go f1()
printStr := color_str.Green(loadingChars[idx%len(loadingChars)]) + " " + onelineDesc
fmt.Printf("\r" + printStr)
idx++
for !done {
select {
case <-c:
done = true
case <-time.After(100 * time.Millisecond):
printStr := color_str.Green(loadingChars[idx%len(loadingChars)]) + " " + onelineDesc
fmt.Printf("\r" + printStr)
idx++
}
}
if disappearAfterDone {
fmt.Printf("\r" + strings.Repeat(" ", len(onelineDesc)+2) + "\r")
}
}
func tput(arg string) error {
cmd := exec.Command("tput", arg)
cmd.Stdout = os.Stdout
return cmd.Run()
}