support toggle case sensitivity

cmd/gofzf/main.go

@@ -21,8 +21,9 @@ var (
 )
 
 var (
-	flagLimit   int
-	flagNoLimit bool
+	flagLimit         int
+	flagNoLimit       bool
+	flagCaseSensitive bool
 
 	flagPrompt           string
 	flagCursor           string
@@ -125,6 +126,7 @@ var rootCmd = &cobra.Command{
 		f := fzf.New(
 			fzf.WithNoLimit(flagNoLimit),
 			fzf.WithLimit(flagLimit),
+			fzf.WithCaseSensitive(flagCaseSensitive),
 
 			fzf.WithPrompt(flagPrompt),
 			fzf.WithCursor(flagCursor),
@@ -222,6 +224,8 @@ func init() {
 	rootCmd.Flags().BoolVar(&flagNoLimit, "no-limit", false, "unlimited number of items to select")
 	rootCmd.MarkFlagsMutuallyExclusive("limit", "no-limit")
 
+	rootCmd.Flags().BoolVar(&flagCaseSensitive, "case-sensitive", false, "case sensitive search")
+
 	rootCmd.Flags().StringVar(&flagPrompt, "prompt", "> ", "")
 	rootCmd.Flags().StringVar(&flagCursor, "cursor", "> ", "")
 	rootCmd.Flags().StringVar(&flagSelectedPrefix, "selected-prefix", "● ", "")

model.go

@@ -329,7 +329,7 @@ func (m *model) filter() {
 		return
 	}
 
-	m.matches = fuzzySearch(m.items, s)
+	m.matches = fuzzySearch(m.items, s, m.option.caseSensitive)
 }
 
 func (m *model) fixCursor() {

option.go

@@ -9,8 +9,9 @@ import (
 )
 
 var defaultOption = option{
-	limit:   1,
-	noLimit: false,
+	limit:         1,
+	noLimit:       false,
+	caseSensitive: false,
 
 	prompt:           "> ",
 	cursor:           "> ",
@@ -42,8 +43,9 @@ var defaultOption = option{
 }
 
 type option struct {
-	limit   int
-	noLimit bool
+	limit         int
+	noLimit       bool
+	caseSensitive bool
 
 	prompt           string
 	cursor           string
@@ -164,3 +166,10 @@ func WithHotReload(locker sync.Locker) Option {
 		o.hotReloadLocker = locker
 	}
 }
+
+// WithCaseSensitive sets the case sensitivity.
+func WithCaseSensitive(s bool) Option {
+	return func(o *option) {
+		o.caseSensitive = s
+	}
+}

search.go

@@ -2,6 +2,7 @@ package fzf
 
 import (
 	"sort"
+	"strings"
 	"sync"
 )
 
@@ -32,7 +33,11 @@ func (m matches) Sort() {
 	})
 }
 
-func fuzzySearch(items *items, search string) matches {
+func fuzzySearch(items *items, search string, caseSensitive bool) matches {
+	if !caseSensitive {
+		search = strings.ToLower(search)
+	}
+
 	result := make(matches, 0, items.Len())
 	resultMutex := sync.Mutex{}
 	wg := sync.WaitGroup{}
@@ -56,6 +61,11 @@ func fuzzySearch(items *items, search string) matches {
 
 				for index := start; index < end; index++ {
 					item := items.String(index)
+
+					if !caseSensitive {
+						item = strings.ToLower(item)
+					}
+
 					matchedIndexes := make([]int, 0, len(search))
 					j := 0
 
@@ -67,7 +77,7 @@ func fuzzySearch(items *items, search string) matches {
 					}
 
 					if j == len(search) {
-						m := match{Str: item, Index: index, MatchedIndexes: matchedIndexes}
+						m := match{Str: items.String(index), Index: index, MatchedIndexes: matchedIndexes}
 						localMatches = append(localMatches, m)
 					}
 				}