BUG: parser_source as a filename with multibyte characters in Windows(non utf-8 filesystem)

pandas/io/tests/data/日本語ファイル名テスト_read_csv_in_win_filesystem.csv

@@ -0,0 +1,3 @@
+A,B,C
+100,200,300
+aaa,bbb,ccc

pandas/io/tests/test_parsers.py

@@ -1822,6 +1822,11 @@ def test_utf16_example(self):
             result = self.read_table(buf, encoding='utf-16')
             self.assertEquals(len(result), 50)
 
+    def test_read_csv_example_in_windows_filesystem(self):
+        buf = b'\xe6\x97\xa5\xe6\x9c\xac\xe8\xaa\x9e\xe3\x83\x95\xe3\x82\xa1\xe3\x82\xa4\xe3\x83\xab\xe5\x90\x8d\xe3\x83\x86\xe3\x82\xb9\xe3\x83\x88_read_csv_in_win_filesystem.csv'
+        path = tm.get_data_path(buf.decode('utf-8'))
+        self.read_csv(path)
+
     def test_converters_corner_with_nas(self):
         # skip aberration observed on Win64 Python 3.2.2
         if hash(np.int64(-1)) != -2:

pandas/parser.pyx

@@ -535,7 +535,7 @@ cdef class TextReader:
 
         if isinstance(source, basestring):
             if not isinstance(source, bytes):
-                source = source.encode('utf-8')
+                source = source.encode(sys.getfilesystemencoding() or 'utf-8') 
 
             if self.memory_map:
                 ptr = new_mmap(source)