mirror of
https://github.com/walles/moar.git
synced 2024-09-11 20:17:13 +03:00
123 lines
2.9 KiB
Go
123 lines
2.9 KiB
Go
package m
|
|
|
|
import (
|
|
"regexp"
|
|
"unicode"
|
|
"unicode/utf8"
|
|
|
|
log "github.com/sirupsen/logrus"
|
|
"github.com/walles/moar/twin"
|
|
)
|
|
|
|
type PagerModeSearch struct {
|
|
pager *Pager
|
|
}
|
|
|
|
func (m PagerModeSearch) drawFooter(_ string, _ string) {
|
|
width, height := m.pager.screen.Size()
|
|
|
|
pos := 0
|
|
for _, token := range "Search: " + m.pager.searchString {
|
|
m.pager.screen.SetCell(pos, height-1, twin.NewCell(token, twin.StyleDefault))
|
|
pos++
|
|
}
|
|
|
|
// Add a cursor
|
|
m.pager.screen.SetCell(pos, height-1, twin.NewCell(' ', twin.StyleDefault.WithAttr(twin.AttrReverse)))
|
|
pos++
|
|
|
|
// Clear the rest of the line
|
|
for pos < width {
|
|
m.pager.screen.SetCell(pos, height-1, twin.NewCell(' ', twin.StyleDefault))
|
|
pos++
|
|
}
|
|
}
|
|
|
|
func (m *PagerModeSearch) updateSearchPattern() {
|
|
m.pager.searchPattern = toPattern(m.pager.searchString)
|
|
|
|
m.pager.scrollToSearchHits()
|
|
|
|
// FIXME: If the user is typing, indicate to user if we didn't find anything
|
|
}
|
|
|
|
// toPattern compiles a search string into a pattern.
|
|
//
|
|
// If the string contains only lower-case letter the pattern will be case insensitive.
|
|
//
|
|
// If the string is empty the pattern will be nil.
|
|
//
|
|
// If the string does not compile into a regexp the pattern will match the string verbatim
|
|
func toPattern(compileMe string) *regexp.Regexp {
|
|
if len(compileMe) == 0 {
|
|
return nil
|
|
}
|
|
|
|
hasUppercase := false
|
|
for _, char := range compileMe {
|
|
if unicode.IsUpper(char) {
|
|
hasUppercase = true
|
|
}
|
|
}
|
|
|
|
// Smart case; be case insensitive unless there are upper case chars
|
|
// in the search string
|
|
prefix := "(?i)"
|
|
if hasUppercase {
|
|
prefix = ""
|
|
}
|
|
|
|
pattern, err := regexp.Compile(prefix + compileMe)
|
|
if err == nil {
|
|
// Search string is a regexp
|
|
return pattern
|
|
}
|
|
|
|
pattern, err = regexp.Compile(prefix + regexp.QuoteMeta(compileMe))
|
|
if err == nil {
|
|
// Pattern matching the string exactly
|
|
return pattern
|
|
}
|
|
|
|
// Unable to create a match-string-verbatim pattern
|
|
panic(err)
|
|
}
|
|
|
|
// From: https://stackoverflow.com/a/57005674/473672
|
|
func removeLastChar(s string) string {
|
|
r, size := utf8.DecodeLastRuneInString(s)
|
|
if r == utf8.RuneError && (size == 0 || size == 1) {
|
|
size = 0
|
|
}
|
|
return s[:len(s)-size]
|
|
}
|
|
|
|
func (m PagerModeSearch) onKey(key twin.KeyCode) {
|
|
switch key {
|
|
case twin.KeyEscape, twin.KeyEnter:
|
|
//nolint:gosimple // The linter's advice is just wrong here
|
|
m.pager.mode = PagerModeViewing{pager: m.pager}
|
|
|
|
case twin.KeyBackspace, twin.KeyDelete:
|
|
if len(m.pager.searchString) == 0 {
|
|
return
|
|
}
|
|
|
|
m.pager.searchString = removeLastChar(m.pager.searchString)
|
|
m.updateSearchPattern()
|
|
|
|
case twin.KeyUp, twin.KeyDown, twin.KeyPgUp, twin.KeyPgDown:
|
|
//nolint:gosimple // The linter's advice is just wrong here
|
|
m.pager.mode = PagerModeViewing{pager: m.pager}
|
|
m.pager.mode.onKey(key)
|
|
|
|
default:
|
|
log.Debugf("Unhandled search key event %v", key)
|
|
}
|
|
}
|
|
|
|
func (m PagerModeSearch) onRune(char rune) {
|
|
m.pager.searchString = m.pager.searchString + string(char)
|
|
m.updateSearchPattern()
|
|
}
|