Create a utils file for low level helpers like path utilities

Utils.py

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+import os
+import sys
+
+def is_bundled():
+    return getattr(sys, 'frozen', False)
+
+def local_path(path):
+    if local_path.cached_path is not None:
+        return os.path.join(local_path.cached_path, path)
+
+    if is_bundled():
+        # we are running in a bundle
+        local_path.cached_path = sys._MEIPASS
+    else:
+        # we are running in a normal Python environment
+        local_path.cached_path = os.path.dirname(os.path.abspath(__file__))
+
+    return os.path.join(local_path.cached_path, path)
+
+local_path.cached_path = None
+
+def output_path(path):
+    if output_path.cached_path is not None:
+        return os.path.join(output_path.cached_path, path)
+
+    if not is_bundled():
+        output_path.cached_path = '.'
+        return os.path.join(output_path.cached_path, path)
+    else:
+        # has been packaged, so cannot use CWD for output.
+        if sys.platform == 'win32':
+            #windows
+            import ctypes.wintypes
+            CSIDL_PERSONAL = 5       # My Documents
+            SHGFP_TYPE_CURRENT = 0   # Get current, not default value
+
+            buf = ctypes.create_unicode_buffer(ctypes.wintypes.MAX_PATH)
+            ctypes.windll.shell32.SHGetFolderPathW(None, CSIDL_PERSONAL, None, SHGFP_TYPE_CURRENT, buf)
+
+            documents = buf.value
+
+        elif sys.platform == 'darwin':
+            from AppKit import NSSearchPathForDirectoriesInDomains
+            # http://developer.apple.com/DOCUMENTATION/Cocoa/Reference/Foundation/Miscellaneous/Foundation_Functions/Reference/reference.html#//apple_ref/c/func/NSSearchPathForDirectoriesInDomains
+            NSDocumentDirectory = 9
+            NSUserDomainMask = 1
+            # True for expanding the tilde into a fully qualified path
+            documents = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, True)[0]
+        else:
+            raise NotImplementedError('Not supported yet')
+
+        output_path.cached_path = os.path.join(documents, 'ALttPEntranceRandomizer')
+        if not os.path.exists(output_path.cached_path):
+            os.mkdir(output_path.cached_path)
+        return os.path.join(output_path.cached_path, path)
+
+output_path.cached_path = None
+
+def open_file(filename):
+    if sys.platform == 'win32':
+        os.startfile(filename)
+    else:
+        open_Command = 'open' if sys.platform == 'darwin' else 'xdg-open'
+        subprocess.call([open_command, filename])