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8e360ae07f
When entering `0` as the go-to-line number. Reported here: https://github.com/walles/moar/issues/199 Note that this just prevents the crash, but it doesn't make sudo work any better so the ticket should still be open.
91 lines
1.9 KiB
Go
91 lines
1.9 KiB
Go
package m
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import (
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"strconv"
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log "github.com/sirupsen/logrus"
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"github.com/walles/moar/m/linenumbers"
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"github.com/walles/moar/twin"
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)
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type PagerModeGotoLine struct {
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pager *Pager
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gotoLineString string
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}
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func (m *PagerModeGotoLine) drawFooter(_ string, _ string) {
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p := m.pager
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_, height := p.screen.Size()
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pos := 0
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for _, token := range "Go to line number: " + m.gotoLineString {
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p.screen.SetCell(pos, height-1, twin.NewCell(token, twin.StyleDefault))
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pos++
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}
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// Add a cursor
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p.screen.SetCell(pos, height-1, twin.NewCell(' ', twin.StyleDefault.WithAttr(twin.AttrReverse)))
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}
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func (m *PagerModeGotoLine) onKey(key twin.KeyCode) {
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p := m.pager
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switch key {
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case twin.KeyEnter:
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newLineNumber, err := strconv.Atoi(m.gotoLineString)
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if err == nil {
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p.scrollPosition = NewScrollPositionFromLineNumber(
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linenumbers.LineNumberFromOneBased(newLineNumber),
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"onGotoLineKey",
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)
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}
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p.mode = PagerModeViewing{pager: p}
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case twin.KeyEscape:
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p.mode = PagerModeViewing{pager: p}
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case twin.KeyBackspace, twin.KeyDelete:
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if len(m.gotoLineString) == 0 {
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return
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}
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m.gotoLineString = removeLastChar(m.gotoLineString)
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default:
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log.Tracef("Unhandled goto key event %v, treating as a viewing key event", key)
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p.mode = PagerModeViewing{pager: p}
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p.mode.onKey(key)
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}
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}
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func (m *PagerModeGotoLine) onRune(char rune) {
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p := m.pager
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if char == 'q' {
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p.mode = PagerModeViewing{pager: p}
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return
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}
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if char == 'g' {
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p.scrollPosition = newScrollPosition("Pager scroll position")
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p.handleScrolledUp()
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p.mode = PagerModeViewing{pager: p}
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return
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}
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newGotoLineString := m.gotoLineString + string(char)
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newGotoLineNumber, err := strconv.Atoi(newGotoLineString)
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if err != nil {
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log.Debugf("Got non-number goto rune '%s'/0x%08x: %s", string(char), int32(char), err)
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return
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}
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if newGotoLineNumber < 1 {
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log.Debugf("Got non-positive goto line number: %d", newGotoLineNumber)
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return
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}
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m.gotoLineString = newGotoLineString
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}
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