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There are a couple of gotchas in LipGlossTruncate: * len() returns the number of bytes in a string * slicing a string slices it on a byte level The fix would normally be to convert the string to a slice of runes and operate on that new slice: r := []rune(str) However, reflow already contains an ansi-aware truncate feature that we can use instead as a drop-in replacement for the LipGlossTruncate function.
165 lines
4.5 KiB
Go
165 lines
4.5 KiB
Go
package pager
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import (
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"fmt"
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"regexp"
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"strings"
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"github.com/charmbracelet/bubbles/textinput"
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"github.com/charmbracelet/gum/internal/utils"
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"github.com/charmbracelet/lipgloss"
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"github.com/muesli/reflow/truncate"
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)
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type search struct {
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active bool
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input textinput.Model
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query *regexp.Regexp
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matchIndex int
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matchLipglossStr string
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matchString string
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}
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func (s *search) new() {
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input := textinput.New()
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input.Placeholder = "search"
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input.Prompt = "/"
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input.PromptStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("240"))
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s.input = input
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}
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func (s *search) Begin() {
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s.new()
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s.active = true
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s.input.Focus()
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}
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// Execute find all lines in the model with a match.
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func (s *search) Execute(m *model) {
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defer s.Done()
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if s.input.Value() == "" {
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s.query = nil
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return
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}
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var err error
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s.query, err = regexp.Compile(s.input.Value())
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if err != nil {
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s.query = nil
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return
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}
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query := regexp.MustCompile(fmt.Sprintf("(%s)", s.query.String()))
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m.content = query.ReplaceAllString(m.content, m.matchStyle.Render("$1"))
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// Recompile the regex to match the an replace the highlights.
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leftPad, _ := utils.LipglossPadding(m.matchStyle)
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matchingString := regexp.QuoteMeta(m.matchStyle.Render()[:leftPad]) + s.query.String() + regexp.QuoteMeta(m.matchStyle.Render()[leftPad:])
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s.query, err = regexp.Compile(matchingString)
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if err != nil {
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s.query = nil
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}
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}
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func (s *search) Done() {
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s.active = false
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// To account for the first match is always executed.
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s.matchIndex = -1
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}
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func (s *search) NextMatch(m *model) {
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// Check that we are within bounds.
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if s.query == nil {
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return
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}
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// Remove previous highlight.
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m.content = strings.Replace(m.content, s.matchLipglossStr, s.matchString, 1)
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// Highlight the next match.
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allMatches := s.query.FindAllStringIndex(m.content, -1)
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if len(allMatches) == 0 {
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return
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}
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leftPad, rightPad := utils.LipglossPadding(m.matchStyle)
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s.matchIndex = (s.matchIndex + 1) % len(allMatches)
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match := allMatches[s.matchIndex]
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lhs := m.content[:match[0]]
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rhs := m.content[match[0]:]
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s.matchString = m.content[match[0]:match[1]]
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s.matchLipglossStr = m.matchHighlightStyle.Render(s.matchString[leftPad : len(s.matchString)-rightPad])
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m.content = lhs + strings.Replace(rhs, m.content[match[0]:match[1]], s.matchLipglossStr, 1)
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// Update the viewport position.
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var line int
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formatStr := softWrapEm(m.content, m.maxWidth, m.softWrap)
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index := strings.Index(formatStr, s.matchLipglossStr)
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if index != -1 {
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line = strings.Count(formatStr[:index], "\n")
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}
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// Only update if the match is not within the viewport.
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if index != -1 && (line > m.viewport.YOffset-1+m.viewport.VisibleLineCount()-1 || line < m.viewport.YOffset) {
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m.viewport.SetYOffset(line)
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}
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}
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func (s *search) PrevMatch(m *model) {
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// Check that we are within bounds.
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if s.query == nil {
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return
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}
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// Remove previous highlight.
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m.content = strings.Replace(m.content, s.matchLipglossStr, s.matchString, 1)
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// Highlight the previous match.
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allMatches := s.query.FindAllStringIndex(m.content, -1)
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if len(allMatches) == 0 {
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return
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}
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s.matchIndex = (s.matchIndex - 1) % len(allMatches)
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if s.matchIndex < 0 {
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s.matchIndex = len(allMatches) - 1
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}
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leftPad, rightPad := utils.LipglossPadding(m.matchStyle)
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match := allMatches[s.matchIndex]
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lhs := m.content[:match[0]]
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rhs := m.content[match[0]:]
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s.matchString = m.content[match[0]:match[1]]
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s.matchLipglossStr = m.matchHighlightStyle.Render(s.matchString[leftPad : len(s.matchString)-rightPad])
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m.content = lhs + strings.Replace(rhs, m.content[match[0]:match[1]], s.matchLipglossStr, 1)
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// Update the viewport position.
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var line int
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formatStr := softWrapEm(m.content, m.maxWidth, m.softWrap)
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index := strings.Index(formatStr, s.matchLipglossStr)
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if index != -1 {
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line = strings.Count(formatStr[:index], "\n")
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}
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// Only update if the match is not within the viewport.
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if index != -1 && (line > m.viewport.YOffset-1+m.viewport.VisibleLineCount()-1 || line < m.viewport.YOffset) {
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m.viewport.SetYOffset(line)
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}
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}
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func softWrapEm(str string, maxWidth int, softWrap bool) string {
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var text strings.Builder
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for _, line := range strings.Split(str, "\n") {
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for softWrap && lipgloss.Width(line) > maxWidth {
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truncatedLine := truncate.String(line, uint(maxWidth))
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text.WriteString(truncatedLine)
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text.WriteString("\n")
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line = strings.Replace(line, truncatedLine, "", 1)
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}
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text.WriteString(truncate.String(line, uint(maxWidth)))
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text.WriteString("\n")
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}
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return text.String()
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}
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