8000 Exhaust queued entries in previewChan prior to calling preview script by neeshy · Pull Request #562 · gokcehan/lf · GitHub
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Exhaust queued entries in previewChan prior to calling preview script #562

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Merged
merged 2 commits into from
Jan 19, 2021
Merged

Exhaust queued entries in previewChan prior to calling preview script #562

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341607b
Use ranged for loop over channel
neeshy Jan 18, 2021
1e2415f
Exhaust queued entries in previewChan prior to calling preview script
neeshy Jan 18, 2021
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34 changes: 23 additions & 11 deletions nav.go
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Original file line number Diff line number Diff line change
Expand Up @@ -460,23 +460,35 @@ func (nav *nav) position() {
}

func (nav *nav) previewLoop(ui *ui) {
var path string
for {
p, ok := <-nav.previewChan
if !ok {
return
var prev string
for path := range nav.previewChan {
var clear bool
if len(path) == 0 {
clear = true
}
if len(p) != 0 {
win := ui.wins[len(ui.wins)-1]
nav.preview(p, win)
path = p
} else if len(gOpts.previewer) != 0 && len(gOpts.cleaner) != 0 && nav.volatilePreview {
cmd := exec.Command(gOpts.cleaner, path)
loop:
for {
select {
case path = <-nav.previewChan:
if len(path) == 0 {
clear = true
}
default:
break loop
}
}
if clear && len(gOpts.previewer) != 0 && len(gOpts.cleaner) != 0 && nav.volatilePreview {
cmd := exec.Command(gOpts.cleaner, prev)
if err := cmd.Run(); err != nil {
log.Printf("cleaning preview: %s", err)
}
nav.volatilePreview = false
}
if len(path) != 0 {
win := ui.wins[len(ui.wins)-1]
nav.preview(path, win)
prev = path
}
}
}

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