Fix bug about mvnw cmd

src/fosslight_dependency/_package_manager.py

@@ -354,11 +354,12 @@ def check_license_name(license_txt, is_filepath=False):
 
 
 def change_file_mode(filepath, mode=''):
-    current_mode = os.stat(filepath).st_mode
+    current_mode = ''
 
     if not os.path.exists(filepath):
         logger.debug(f"The file{filepath} does not exist.")
     else:
+        current_mode = os.stat(filepath).st_mode
         if not mode:
             new_mode = current_mode | stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH
         else:

src/fosslight_dependency/package_manager/Maven.py

@@ -134,15 +134,17 @@ def clean_run_maven_plugin_output(self):
 
     def run_maven_plugin(self):
         logger.info('Run maven license scanning plugin with temporary pom.xml')
+        current_mode = ''
         if os.path.isfile('mvnw') or os.path.isfile('mvnw.cmd'):
             if self.platform == const.WINDOWS:
                 cmd_mvn = "mvnw.cmd"
             else:
                 cmd_mvn = "./mvnw"
+            current_mode = change_file_mode(cmd_mvn)
         else:
             cmd_mvn = "mvn"
         cmd = f"{cmd_mvn} license:aggregate-download-licenses"
-        current_mode = change_file_mode(cmd_mvn)
+
         ret = subprocess.call(cmd, shell=True)
         if ret != 0:
             logger.error(f"Failed to run maven plugin: {cmd}")
@@ -159,7 +161,8 @@ def run_maven_plugin(self):
         except Exception as e:
             logger.error(f"Failed to run '{cmd}': {e}")
             self.set_direct_dependencies(False)
-        change_file_mode(cmd_mvn, current_mode)
+        if current_mode:
+            change_file_mode(cmd_mvn, current_mode)
 
     def create_dep_stack(self, dep_line):
         dep_stack = []