Adds support for Darwin os client generation (#1591)

Author: AKARSHITJOSHI

scripts/generate_api_client.sh

@@ -4,26 +4,27 @@ echo ""
 echo "Please make sure that you have already updated the src/xpanse-api/api.json."
 echo ""
 echo -n "Press any key to continue..."
-read answer
+read -r answer
 
-# Get the directory of the currently running script
-SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SCRIPT_DIR="$(cd "$(dirname "$0")" && 
+API_DIR="${SCRIPT_DIR}/../src/xpanse-api/"
 
-# Get the root directory of xpanse-api
-API_DIR=${SCRIPT_DIR}/../src/xpanse-api/
-
-# Generate API files
 npx @hey-api/openapi-ts
 
-$(
-cd ${API_DIR}
+(
+cd "${API_DIR}" || exit 1
+
+FILE_NEED_ADD_LICENSE=$(grep -L "SPDX-License-Identifier" ./ --exclude='*.json' -R)
 
-FILE_NEED_ADD_LICENSE=$(grep -L "SPDX-License-Identifier" ./ --exclude *.json -R)
+for FILE in $FILE_NEED_ADD_LICENSE; do
+    echo "Updating license header in: $FILE"
 
-for FILE in $FILE_NEED_ADD_LICENSE
-do
-	echo $FILE
-	sed -i '1s#^#/*\n * SPDX-License-Identifier: Apache-2.0\n * SPDX-FileCopyrightText: Huawei Inc.\n */\n\n#' $FILE
+    if [[ "$OSTYPE" == "darwin"* ]]; then
+        sed -i '' '1s#^#/*\n * SPDX-License-Identifier: Apache-2.0\n * SPDX-FileCopyrightText: Huawei Inc.\n */\n\n#' "$FILE"
+    else
+        # Linux
+        sed -i '1s#^#/*\n * SPDX-License-Identifier: Apache-2.0\n * SPDX-FileCopyrightText: Huawei Inc.\n */\n\n#' "$FILE"
+    fi
 done
 )