refactor: move accesslog to logging/accesslog

internal/logging/accesslog/status_code_range.go

@@ -0,0 +1,52 @@
+package accesslog
+
+import (
+	"strconv"
+
+	"github.com/yusing/go-proxy/internal/gperr"
+	"github.com/yusing/go-proxy/internal/utils/strutils"
+)
+
+type StatusCodeRange struct {
+	Start int
+	End   int
+}
+
+var ErrInvalidStatusCodeRange = gperr.New("invalid status code range")
+
+func (r *StatusCodeRange) Includes(code int) bool {
+	return r.Start <= code && code <= r.End
+}
+
+// Parse implements strutils.Parser.
+func (r *StatusCodeRange) Parse(v string) error {
+	split := strutils.SplitRune(v, '-')
+	switch len(split) {
+	case 1:
+		start, err := strconv.Atoi(split[0])
+		if err != nil {
+			return gperr.Wrap(err)
+		}
+		r.Start = start
+		r.End = start
+		return nil
+	case 2:
+		start, errStart := strconv.Atoi(split[0])
+		end, errEnd := strconv.Atoi(split[1])
+		if err := gperr.Join(errStart, errEnd); err != nil {
+			return err
+		}
+		r.Start = start
+		r.End = end
+		return nil
+	default:
+		return ErrInvalidStatusCodeRange.Subject(v)
+	}
+}
+
+func (r *StatusCodeRange) String() string {
+	if r.Start == r.End {
+		return strconv.Itoa(r.Start)
+	}
+	return strconv.Itoa(r.Start) + "-" + strconv.Itoa(r.End)
+}