Intial checkin of layout test analyzer.

media/tools/layout_tests/trend_graph.py

Index: media/tools/layout_tests/trend_graph.py
diff --git a/media/tools/layout_tests/trend_graph.py b/media/tools/layout_tests/trend_graph.py
new file mode 100644
index 0000000000000000000000000000000000000000..c39fff88343d3e8e347d454a74465fc5b11a2dbf
--- /dev/null
+++ b/media/tools/layout_tests/trend_graph.py
@@ -0,0 +1,78 @@
+#!/usr/bin/python
+# Copyright (c) 2011 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import fileinput
+import os
+import sys
+
+
+"""A Module for manipulating trend graph with analyzer result history."""
+
+DEFAULT_TREND_GRAPH_PATH = os.path.join('graph', 'graph.html')
+
+# The following is necesasry to decide the point to insert.
+LINE_INSERT_POINT_FOR_NUMBERS = r'// insert 1'
+LINE_INSERT_POINT_FOR_PASSING_RATE = r'// insert 2'
+
+
+class TrendGraph(object):
+  """A class to manage trend graph which is using Google Visualization APIs.
+
+  Google Visualization API (http://code.google.com/apis/chart/interactive/docs/
+  gallery/annotatedtimeline.html) is used to present the historical analyzer
+  result. Currently, data is directly written to JavaScript file using file
+  in-place replacement for simplicity.
+
+  TODO(imasaki): use GoogleSpreadsheet to store the analyzer result.
+  """
+
+  def __init__(self, location=DEFAULT_TREND_GRAPH_PATH):
+    """Initialize this object with the location of trend graph."""
+    self._location = location
+
+  def Update(self, datetime_string, data_map):
+    """Update trend graphs using |datetime_string| and |data_map|.
+
+    There are two kinds of graphs to be updated (one is for numbers and the
+    other is for passing rates).
+
+    Args:
+        datetime_string: a datetime string (e.g., '2008,1,1,13,45,00)'
+        data_map: a dictionary containing 'whole', 'skip' , 'nonskip',
+          'passingrate' as its keys and (number, tile, text) string tuples
+          as values for graph annotation.
+    """
+    joined_str = ''
+    for key in ['whole', 'skip', 'nonskip']:
+      joined_str += ','.join(data_map[key]) + ','
+    new_line_for_numbers = '         [new Date(%s),%s],\n' % (datetime_string,
+                                                              joined_str)
+    new_line_for_numbers += '         %s\n' % (
+        LINE_INSERT_POINT_FOR_NUMBERS)
+    self._ReplaceLine(LINE_INSERT_POINT_FOR_NUMBERS, new_line_for_numbers)
+
+    joined_str = '%s,%s,%s' % (
+        data_map['passingrate'][0], data_map['nonskip'][1],
+        data_map['nonskip'][2])
+    new_line_for_passingrate = '         [new Date(%s),%s],\n' % (
+        datetime_string, joined_str)
+    new_line_for_passingrate += '         %s\n' % (
+        LINE_INSERT_POINT_FOR_PASSING_RATE)
+    self._ReplaceLine(LINE_INSERT_POINT_FOR_PASSING_RATE,
+                      new_line_for_passingrate)
+
+  def _ReplaceLine(self, search_exp, replace_line):
+    """Replace line which has |search_exp| with |replace_line|.
+
+    Args:
+        search_exp: search expression to find a line to be replaced.
+        replace_line: the new line.
+    """
+    replaced = False
+    for line in fileinput.input(self._location, inplace=1):
+      if search_exp in line:
+        replaced = True
+        line = replace_line
+      sys.stdout.write(line)