Initial commit (code only without large binaries)

EdgeAPI/internal/utils/domain.go

@@ -0,0 +1,26 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved. Official site: https://goedge.cn .
+
+package utils
+
+import (
+	"regexp"
+	"strings"
+)
+
+var cacheKeyDomainReg1 = regexp.MustCompile(`^(?i)(?:http|https)://([\w-.*]+)`) // 这里支持 *.example.com
+var cacheKeyDomainReg2 = regexp.MustCompile(`^([\w-.]+)`)
+
+// ParseDomainFromKey 从Key中获取域名
+func ParseDomainFromKey(key string) (domain string) {
+	var pieces = cacheKeyDomainReg1.FindStringSubmatch(key)
+	if len(pieces) > 1 {
+		return strings.ToLower(pieces[1])
+	}
+
+	pieces = cacheKeyDomainReg2.FindStringSubmatch(key)
+	if len(pieces) > 1 {
+		return strings.ToLower(pieces[1])
+	}
+
+	return ""
+}