chore: new rule

rewrite/parser.go

@@ -7,12 +7,7 @@ import (
 	C "github.com/Dreamacro/clash/constant"
 )
 
-func ParseRewrite(line string) (C.Rewrite, error) {
-	url, others, found := strings.Cut(strings.TrimSpace(line), "url")
-	if !found {
-		return nil, errInvalid
-	}
-
+func ParseRewrite(line RawMitmRule) (C.Rewrite, error) {
 	var (
 		urlRegx     *regexp.Regexp
 		ruleType    *C.RewriteType
@@ -22,57 +17,37 @@ func ParseRewrite(line string) (C.Rewrite, error) {
 		err error
 	)
 
+	url := line.Url
 	urlRegx, err = regexp.Compile(strings.Trim(url, " "), regexp.None)
 	if err != nil {
 		return nil, err
 	}
 
-	others = strings.Trim(others, " ")
-	first := strings.Split(others, " ")[0]
-	for k, v := range C.RewriteTypeMapping {
-		if k == others {
-			ruleType = &v
+	ruleType = &line.Action
+	switch *ruleType {
+	case C.Mitm302, C.Mitm307:
+		{
+			rulePayload = line.New
 			break
 		}
+	case C.MitmRequestHeader, C.MitmRequestBody, C.MitmResponseHeader, C.MitmResponseBody:
+		{
+			var old string
+			if line.Old == nil {
+				old = ".*"
+			} else {
+				old = *line.Old
+			}
 
-		if k != first {
-			continue
-		}
-
-		rs := trimArr(strings.Split(others, k))
-		l := len(rs)
-		if l > 2 {
-			continue
-		}
-
-		if l == 1 {
-			ruleType = &v
-			rulePayload = rs[0]
-			break
-		} else {
-			ruleRegx, err = regexp.Compile(rs[0], regexp.None)
+			re, err := regexp.Compile(old, regexp.Singleline)
 			if err != nil {
 				return nil, err
 			}
+			ruleRegx = re
 
-			ruleType = &v
-			rulePayload = rs[1]
-			break
+			rulePayload = line.New
 		}
 	}
 
-	if ruleType == nil {
-		return nil, errInvalid
-	}
-
 	return NewRewriteRule(urlRegx, *ruleType, ruleRegx, rulePayload), nil
 }
-
-func trimArr(arr []string) (r []string) {
-	for _, e := range arr {
-		if s := strings.Trim(e, " "); s != "" {
-			r = append(r, s)
-		}
-	}
-	return
-}