fix download swoole-cli runtime bug (swoole#852)

Author: jingjingxyk

ext/swoole

@@ -70,8 +70,17 @@ while [ $# -gt 0 ]; do
     ;;
   --version)
     # 指定发布 TAG
-    X_VERSION=$(echo "$2" | grep -E '^v\d\.\d{1,2}\.\d{1,2}\.\d{1,2}$')
-    X_APP_VERSION=$(echo "$2" | grep -Eo '^v\d\.\d{1,2}\.\d{1,2}')
+    if [ $OS = "macos" ]; then
+      X_VERSION=$(echo "$2" | grep -E '^v\d\.\d{1,2}\.\d{1,2}\.\d{1,2}$')
+      X_APP_VERSION=$(echo "$2" | grep -Eo '^v\d\.\d{1,2}\.\d{1,2}')
+    elif [ $OS = "linux" ]; then
+      X_VERSION=$(echo "$2" | grep -P '^v\d\.\d{1,2}\.\d{1,2}\.\d{1,2}$')
+      X_APP_VERSION=$(echo "$2" | grep -Po '^v\d\.\d{1,2}\.\d{1,2}')
+    else
+      X_VERSION=''
+      X_APP_VERSION=''
+    fi
+
     if [[ -n $X_VERSION ]] && [[ -n $X_APP_VERSION ]]; then
       {
         VERSION=$X_VERSION