Fix Qemu cannot be used on Windows

Fix #291

gns3server/modules/qemu/qemu_vm.py

@@ -149,7 +149,9 @@ class QemuVM(BaseVM):
         if self._platform == "qemu-kvm":
             self._platform = "x86_64"
         else:
-            self._platform = re.sub(r'^qemu-system-(.*)(w.exe)?$', r'\1', os.path.basename(qemu_path), re.IGNORECASE)
+            qemu_bin = os.path.basename(qemu_path)
+            qemu_bin = re.sub(r'(w)?\.(exe|EXE)$', '', qemu_bin)
+            self._platform = re.sub(r'^qemu-system-(.*)$', r'\1', qemu_bin, re.IGNORECASE)
         if self._platform.split(".")[0] not in QEMU_PLATFORMS:
             raise QemuError("Platform {} is unknown".format(self._platform))
         log.info('QEMU VM "{name}" [{id}] has set the QEMU path to {qemu_path}'.format(name=self._name,

tests/modules/qemu/test_qemu_vm.py

@@ -240,6 +240,20 @@ def test_set_qemu_path_environ(vm, tmpdir, fake_qemu_binary):
     assert vm.platform == "x86_64"
 
 
+
+def test_set_qemu_path_windows(vm, tmpdir):
+
+    bin_path = os.path.join(os.environ["PATH"], "qemu-system-x86_64w.EXE")
+    open(bin_path, "w+").close()
+    os.chmod(bin_path, stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR)
+
+    vm.qemu_path = bin_path
+
+    assert vm.qemu_path == bin_path
+    assert vm.platform == "x86_64"
+
+
+
 @pytest.mark.skipif(sys.platform.startswith("linux") is False, reason="Supported only on linux")
 def test_set_qemu_path_kvm_binary(vm, tmpdir, fake_qemu_binary):