Got basic webpage working. Need to make base page, static folders

2018-01-20 13:16:20 -08:00
parent 982037efc1
commit 1a375726ae
5625 changed files with 577078 additions and 0 deletions
@@ -0,0 +1,38 @@
+from ctypes import c_void_p
+
+
+class CPointerBase:
+    """
+    Base class for objects that have a pointer access property
+    that controls access to the underlying C pointer.
+    """
+    _ptr = None  # Initially the pointer is NULL.
+    ptr_type = c_void_p
+    destructor = None
+    null_ptr_exception_class = AttributeError
+
+    @property
+    def ptr(self):
+        # Raise an exception if the pointer isn't valid so that NULL pointers
+        # aren't passed to routines -- that's very bad.
+        if self._ptr:
+            return self._ptr
+        raise self.null_ptr_exception_class('NULL %s pointer encountered.' % self.__class__.__name__)
+
+    @ptr.setter
+    def ptr(self, ptr):
+        # Only allow the pointer to be set with pointers of the compatible
+        # type or None (NULL).
+        if not (ptr is None or isinstance(ptr, self.ptr_type)):
+            raise TypeError('Incompatible pointer type: %s.' % type(ptr))
+        self._ptr = ptr
+
+    def __del__(self):
+        """
+        Free the memory used by the C++ object.
+        """
+        if self.destructor and self._ptr:
+            try:
+                self.destructor(self.ptr)
+            except (AttributeError, TypeError):
+                pass  # Some part might already have been garbage collected