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only move cursor up if pos > 0

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This commit is contained in:
Michael Yang 2023-11-15 14:04:57 -08:00
parent d6ecaa2cbf
commit 7ea905871a
1 changed files with 5 additions and 2 deletions
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7
progress/progress.go
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@ -25,7 +25,7 @@ type Progress struct {
} }
func NewProgress(w io.Writer) *Progress { func NewProgress(w io.Writer) *Progress {
p := &Progress{pos: -1, w: w} p := &Progress{w: w}
go p.start() go p.start()
return p return p
} }
@ -71,7 +71,10 @@ func (p *Progress) render() error {
p.mu.Lock() p.mu.Lock()
defer p.mu.Unlock() defer p.mu.Unlock()
fmt.Fprintf(p.w, "\033[%dA", p.pos) if p.pos > 0 {
fmt.Fprintf(p.w, "\033[%dA", p.pos)
}
for _, state := range p.states { for _, state := range p.states {
fmt.Fprintln(p.w, state.String()) fmt.Fprintln(p.w, state.String())
} }