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Add --tail=NUM to limit the number of items to keep in memory

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Junegunn Choi
2024-06-04 15:48:38 +09:00
parent 4c83d8596d
commit 93bbb3032d
10 changed files with 226 additions and 56 deletions
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29
src/terminal.go
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@@ -160,6 +160,7 @@ type itemLine struct {
result Result
empty bool
other bool
minIndex int32
}
func (t *Terminal) markEmptyLine(line int) {
@@ -301,7 +302,7 @@ type Terminal struct {
merger *Merger
selected map[int32]selectedItem
version int64
revision int
revision revision
reqBox *util.EventBox
initialPreviewOpts previewOpts
previewOpts previewOpts
@@ -822,7 +823,7 @@ func NewTerminal(opts *Options, eventBox *util.EventBox, executor *util.Executor
printer: opts.Printer,
printsep: opts.PrintSep,
proxyScript: opts.ProxyScript,
merger: EmptyMerger(0),
merger: EmptyMerger(revision{}),
selected: make(map[int32]selectedItem),
reqBox: util.NewEventBox(),
initialPreviewOpts: opts.Preview,
@@ -1164,8 +1165,8 @@ func (t *Terminal) UpdateProgress(progress float32) {
func (t *Terminal) UpdateList(merger *Merger, triggerResultEvent bool) {
t.mutex.Lock()
prevIndex := minItem.Index()
reset := t.revision != merger.Revision()
if !reset && t.track != trackDisabled {
newRevision := merger.Revision()
if t.revision.compatible(newRevision) && t.track != trackDisabled {
if t.merger.Length() > 0 {
prevIndex = t.currentIndex()
} else if merger.Length() > 0 {
@@ -1174,9 +1175,19 @@ func (t *Terminal) UpdateList(merger *Merger, triggerResultEvent bool) {
}
t.progress = 100
t.merger = merger
if reset {
t.selected = make(map[int32]selectedItem)
t.revision = merger.Revision()
if !t.revision.equals(newRevision) {
if !t.revision.compatible(newRevision) { // Reloaded: clear selection
t.selected = make(map[int32]selectedItem)
} else { // Trimmed by --tail: filter selection by index
filtered := make(map[int32]selectedItem)
for k, v := range t.selected {
if k >= merger.minIndex {
filtered[k] = v
}
}
t.selected = filtered
}
t.revision = newRevision
t.version++
}
if t.triggerLoad {
@@ -1959,9 +1970,9 @@ func (t *Terminal) printItem(result Result, line int, maxLine int, index int, cu
// Avoid unnecessary redraw
newLine := itemLine{firstLine: line, cy: index + t.offset, current: current, selected: selected, label: label,
result: result, queryLen: len(t.input), width: 0, hasBar: line >= barRange[0] && line < barRange[1]}
result: result, queryLen: len(t.input), width: 0, hasBar: line >= barRange[0] && line < barRange[1], minIndex: t.merger.minIndex}
prevLine := t.prevLines[line]
forceRedraw := prevLine.other || prevLine.firstLine != newLine.firstLine
forceRedraw := prevLine.other || prevLine.firstLine != newLine.firstLine || prevLine.minIndex != t.merger.minIndex
printBar := func(lineNum int, forceRedraw bool) bool {
return t.printBar(lineNum, forceRedraw, barRange)
}