Initial backend repository commit.

Set up project files and add .gitignore to exclude local build/runtime artifacts.

Made-with: Cursor

internal/pkg/utils/validator.go

@@ -0,0 +1,46 @@
+package utils
+
+import (
+	"regexp"
+	"strings"
+)
+
+// ValidateEmail 验证邮箱
+func ValidateEmail(email string) bool {
+	pattern := `^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$`
+	matched, _ := regexp.MatchString(pattern, email)
+	return matched
+}
+
+// ValidateUsername 验证用户名
+func ValidateUsername(username string) bool {
+	if len(username) < 3 || len(username) > 30 {
+		return false
+	}
+	pattern := `^[a-zA-Z0-9_]+$`
+	matched, _ := regexp.MatchString(pattern, username)
+	return matched
+}
+
+// ValidatePassword 验证密码强度
+func ValidatePassword(password string) bool {
+	if len(password) < 6 || len(password) > 50 {
+		return false
+	}
+	return true
+}
+
+// ValidatePhone 验证手机号
+func ValidatePhone(phone string) bool {
+	pattern := `^1[3-9]\d{9}$`
+	matched, _ := regexp.MatchString(pattern, phone)
+	return matched
+}
+
+// SanitizeHTML 清理HTML
+func SanitizeHTML(input string) string {
+	// 简单实现，实际使用建议用专门库
+	input = strings.ReplaceAll(input, "<", "<")
+	input = strings.ReplaceAll(input, ">", ">")
+	return input
+}