changed freecad libs searching to hard-coded per platform

src/freecad_to_gazebo/__init__.py

@@ -1,32 +1,23 @@
 #!/usr/bin/env python3
 
 import os
+import platform
 
 # check os types to search for freecad libraries
-if 'posix' in os.name:
-    # TODO: Test the result of os.name in different systems
-    _so = os.popen('which freecad')
-    FREECAD_PATH = _so.readline().replace('\n', '')
-    if not FREECAD_PATH:
-        _so.close()
-        _so = os.popen('which FreeCAD')
-        FREECAD_PATH = _so.readline().replace('\n', '')
-        _so.close()
-
-    FREECAD_PATH = FREECAD_PATH.replace('bin', 'lib')
-
-    if not FREECAD_PATH:
-        raise ModuleNotFoundError('FreeCAD not installed.')
-
-elif 'nt' in os.name:
+if 'linux' in platform.system().lower():
+    if 'ubuntu' in platform.dist().lower():
+        FREECAD_PATH = '/usr/lib/freecad'
+    elif 'fedora' in platform.dist().lower():
+        FREECAD_PATH = '/usr/lib/freecad'
+elif 'nt' in platform.dist().lower():
     # TODO: Find freecad libs on windows
-    pass
 else:
     raise Exception("Platform not supported")
 
 # Extend sys.path to include freecad python libraries (including workbenches)
 os.sys.path.extend(d.path for d in os.scandir(FREECAD_PATH))
 
-from .exporter import export
-from .model import *
+from freecad_to_gazebo.mesh_exporter import export
+from freecad_to_gazebo.model import *
+from freecad_to_gazebo.freecad_exporter import *