NoIssue - Added filterhit statistics loading capability

abp/stats/filterhits.py

Index: abp/stats/filterhits.py
diff --git a/abp/stats/filterhits.py b/abp/stats/filterhits.py
new file mode 100644
index 0000000000000000000000000000000000000000..311b1600a4bff9820564692597add72454afc9f6
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+++ b/abp/stats/filterhits.py
@@ -0,0 +1,49 @@
+# This file is part of Adblock Plus <https://adblockplus.org/>,
+# Copyright (C) 2006-present eyeo GmbH
+#
+# Adblock Plus is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 3 as
+# published by the Free Software Foundation.
+#
+# Adblock Plus is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
+
+"""Helping methods for filterhit-related statistics."""
+
+import csv
+
+
+def load_filterhit_statistics(path, sources=None):
+    """Load filterhit statistics from a csv file.
+
+    Parameters
+    ----------
+    path: str
+        Path to the csv file with the filterhit statistics.
+    sources: iterable of str
+        With the filter sources we're interested in. If not None, only filters
+        from these sources will be included in the result.
+
+    Returns
+    -------
+    generator of dict
+        With the csv entries.
+
+    """
+    integer_cols = ['onehour_sessions', 'hits']
+
+    with open(path) as csvstream:
+        reader = csv.DictReader(csvstream)
+
+        for entry in reader:
+            if sources and entry['source'] not in sources:
+                continue
+            for col in integer_cols:
+                entry[col] = int(entry[col])
+
+            yield entry