Mercurial Repositories > eric / changeset

--- a/src/eric7/MicroPython/Devices/DeviceBase.py	Mon Mar 06 09:50:18 2023 +0100
+++ b/src/eric7/MicroPython/Devices/DeviceBase.py	Mon Mar 06 11:39:26 2023 +0100
@@ -34,7 +34,8 @@
     commands are:
     <ul>
     <li>cd: change directory</li>
-    <li>fileSystemInfo: get information about the file system
+    <li>exists: test the existence of a file or directory on the device</li>
+    <li>fileSystemInfo: get information about the file system</li>
     <li>get: get a file from the connected device</li>
     <li>getData: read data of a file of the connected device</li>
     <li>lls: directory listing with meta data</li>
@@ -45,7 +46,7 @@
     <li>pwd: get the current directory</li>
     <li>rm: remove a file from the connected device</li>
     <li>rmdir: remove an empty directory</li>
-    <li>rmrf: remove a file/directory recursively (like 'rm -rf' in bash)
+    <li>rmrf: remove a file/directory recursively (like 'rm -rf' in bash)</li>
     </ul>
 
     Supported non file system commands are:
@@ -478,6 +479,32 @@
     ## Methods below implement the file system commands
     ##################################################################
 
+    def exists(self, pathname):
+        """
+        Public method to check the existence of a file or directory.
+
+        @param pathname name of the path to check
+        @type str
+        @return flag indicating the existence
+        @rtype bool
+        @exception OSError raised to indicate an issue with the device
+        """
+        command = """
+import os as __os_
+try:
+    __os_.stat({0})
+    print(True)
+except OSError:
+    print(False)
+del __os_
+""".format(
+            repr(pathname)
+        )
+        out, err = self._interface.execute(command, mode=self._submitMode)
+        if err:
+            raise OSError(self._shortError(err))
+        return out.strip() == b"True"
+
     def ls(self, dirname=""):
         """
         Public method to get a directory listing of the connected device.

--- a/src/eric7/MicroPython/MicroPythonFileManager.py	Mon Mar 06 09:50:18 2023 +0100
+++ b/src/eric7/MicroPython/MicroPythonFileManager.py	Mon Mar 06 11:39:26 2023 +0100
@@ -81,6 +81,21 @@
 
         self.__device = device
 
+    def exists(self, pathname):
+        """
+        Public method to check the existence of a file or directory.
+
+        @param pathname name of the path to check
+        @type str
+        @return flag indicating the existence
+        @rtype bool
+        """
+        try:
+            return self.__device.exists(pathname)
+        except Exception as exc:
+            self.error.emit("exists", str(exc))
+            return False
+
     @pyqtSlot(str)
     def lls(self, dirname, showHidden=False):
         """