2 files changed, 49 insertions, 0 deletions
diff --git a/internal/strutil/strutil.go b/internal/strutil/strutil.go
index 30fa260a..c1013959 100644
--- a/internal/strutil/strutil.go
+++ b/internal/strutil/strutil.go
@@ -54,3 +54,12 @@ func Ellipsis(str string, threshold int) string {
 	}
 	return str[:threshold] + "..."
 }
+
+// Truncate returns a truncated string if its length is over the limit.
+// Otherwise, it returns the original string.
+func Truncate(str string, limit int) string {
+	if len(str) < limit {
+		return str
+	}
+	return str[:limit]
+}
diff --git a/internal/strutil/strutil_test.go b/internal/strutil/strutil_test.go
index 8a2fed75..d22e1f72 100644
--- a/internal/strutil/strutil_test.go
+++ b/internal/strutil/strutil_test.go
@@ -95,3 +95,43 @@ func TestEllipsis(t *testing.T) {
 		})
 	}
 }
+
+func TestTruncate(t *testing.T) {
+	tests := []struct {
+		name  string
+		str   string
+		limit int
+		want  string
+	}{
+		{
+			name:  "empty string with zero limit",
+			str:   "",
+			limit: 0,
+			want:  "",
+		},
+		{
+			name:  "smaller length than limit",
+			str:   "ab",
+			limit: 3,
+			want:  "ab",
+		},
+		{
+			name:  "same length as limit",
+			str:   "abc",
+			limit: 3,
+			want:  "abc",
+		},
+		{
+			name:  "greater length than limit",
+			str:   "ab",
+			limit: 1,
+			want:  "a",
+		},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			got := Truncate(test.str, test.limit)
+			assert.Equal(t, test.want, got)
+		})
+	}
+}