3 files changed, 6 insertions, 59 deletions
diff --git a/vk/tracking/db/backend/csv.py b/vk/tracking/db/backend/csv.py
index 43038e4..0503872 100644
--- a/vk/tracking/db/backend/csv.py
+++ b/vk/tracking/db/backend/csv.py
@@ -3,15 +3,16 @@
 # For details, see https://github.com/egor-tensin/vk-scripts.
 # Distributed under the MIT License.
 
+from vk.utils.io import FileReaderCSV, FileWriterCSV
+
 from .. import meta
-from ..io import FileReaderCSV, FileWriterCSV
 from ..record import Record
 from ..timestamp import Timestamp
 
 
 class Writer(meta.Writer):
     def __init__(self, fd):
-        self._writer = FileWriterCSV(fd)
+        self._writer = FileWriterCSV(fd, flush=True)
 
     def on_initial_status(self, user):
         self._write_record(user)
diff --git a/vk/tracking/db/format.py b/vk/tracking/db/format.py
index 028d403..2a54f6d 100644
--- a/vk/tracking/db/format.py
+++ b/vk/tracking/db/format.py
@@ -6,7 +6,9 @@
 from enum import Enum
 import sys
 
-from . import backend, io
+from vk.utils import io
+
+from . import backend
 
 
 class Format(Enum):
diff --git a/vk/tracking/db/io.py b/vk/tracking/db/io.py
deleted file mode 100644
index a89865f..0000000
--- a/vk/tracking/db/io.py
+++ /dev/null
@@ -1,56 +0,0 @@
-# Copyright (c) 2017 Egor Tensin <Egor.Tensin@gmail.com>
-# This file is part of the "VK scripts" project.
-# For details, see https://github.com/egor-tensin/vk-scripts.
-# Distributed under the MIT License.
-
-from contextlib import contextmanager
-import csv
-import sys
-
-
-class FileWriterCSV:
-    def __init__(self, fd=sys.stdout):
-        self._fd = fd
-        self._writer = csv.writer(fd, lineterminator='\n')
-
-    @staticmethod
-    def _convert_row_old_python(row):
-        if isinstance(row, (list, tuple)):
-            return row
-        return list(row)
-
-    def write_row(self, row):
-        if sys.version_info < (3, 5):
-            row = self._convert_row_old_python(row)
-        self._writer.writerow(row)
-        self._fd.flush()
-
-
-class FileReaderCSV:
-    def __init__(self, fd=sys.stdin):
-        self._reader = csv.reader(fd)
-
-    def __iter__(self):
-        return iter(self._reader)
-
-
-@contextmanager
-def _open_file(path=None, default=None, **kwargs):
-    if path is None:
-        yield default
-    else:
-        with open(path, **kwargs) as fd:
-            yield fd
-
-
-_DEFAULT_ENCODING = 'utf-8'
-
-
-def open_output_text_file(path=None, mode='w'):
-    return _open_file(path, default=sys.stdout, mode=mode,
-                      encoding=_DEFAULT_ENCODING)
-
-
-def open_input_text_file(path=None):
-    return _open_file(path, default=sys.stdin, mode='r',
-                      encoding=_DEFAULT_ENCODING)