track_status.py: move stuff to the package

1 files changed, 40 insertions, 0 deletions

diff --git a/vk/utils/tracking/db/writer/csv.py b/vk/utils/tracking/db/writer/csv.py
new file mode 100644
index 0000000..4594e09
--- /dev/null
+++ b/vk/utils/tracking/db/writer/csv.py
@@ -0,0 +1,40 @@
+# Copyright 2016 Egor Tensin <Egor.Tensin@gmail.com>
+# This file is licensed under the terms of the MIT License.
+# See LICENSE.txt for details.
+
+import csv
+from datetime import datetime
+
+from ..record import Record
+
+class Writer:
+    def __init__(self, path, mode='w'):
+        if path is None:
+            self._fd = None
+        else:
+            self._fd = open(path, mode)
+            self._writer = csv.writer(self._fd, lineterminator='\n')
+
+    def _is_valid(self):
+        return self._fd is not None
+
+    def __enter__(self):
+        if not self._is_valid():
+            return None
+        self._fd.__enter__()
+        return self
+
+    def __exit__(self, *args):
+        if self._is_valid():
+            self._fd.__exit__(*args)
+
+    def flush(self):
+        if self._is_valid():
+            self._fd.flush()
+
+    def write_record(self, user):
+        self._write_row(Record(user).to_list())
+        self.flush()
+
+    def _write_row(self, row):
+        self._writer.writerow(row)