Add pylint to depot_tools.

third_party/pylint/reporters/__init__.py

+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 2 of the License, or (at your option) any later
+# version.
+#
+# This program 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
+# this program; if not, write to the Free Software Foundation, Inc.,
+# 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+"""utilities methods and classes for reporters
+
+Copyright (c) 2000-2003 LOGILAB S.A. (Paris, FRANCE).
+http://www.logilab.fr/ -- mailto:contact@logilab.fr
+"""
+
+import sys, locale
+
+CMPS = ['=', '-', '+']
+
+def diff_string(old, new):
+    """given a old and new int value, return a string representing the
+    difference
+    """
+    diff = abs(old - new)
+    diff_str = "%s%s" % (CMPS[cmp(old, new)], diff and ('%.2f' % diff) or '')
+    return diff_str
+
+
+class EmptyReport(Exception):
+    """raised when a report is empty and so should not be displayed"""
+
+class BaseReporter:
+    """base class for reporters"""
+
+    extension = ''
+
+    def __init__(self, output=None):
+        self.linter = None
+        self.include_ids = None
+        self.section = 0
+        self.out = None
+        self.out_encoding = None
+        self.set_output(output)
+
+    def set_output(self, output=None):
+        """set output stream"""
+        self.out = output or sys.stdout
+        # py3k streams handle their encoding :
+        if sys.version_info >= (3, 0):
+            self.encode = lambda x: x
+            return
+
+        def encode(string):
+            if not isinstance(string, unicode):
+                return string
+            encoding = (getattr(self.out, 'encoding', None) or
+                        locale.getdefaultlocale()[1] or
+                        sys.getdefaultencoding())
+            return string.encode(encoding)
+        self.encode = encode
+
+    def writeln(self, string=''):
+        """write a line in the output buffer"""
+        print >> self.out, self.encode(string)
+
+    def display_results(self, layout):
+        """display results encapsulated in the layout tree"""
+        self.section = 0
+        if self.include_ids and hasattr(layout, 'report_id'):
+            layout.children[0].children[0].data += ' (%s)' % layout.report_id
+        self._display(layout)
+
+    def _display(self, layout):
+        """display the layout"""
+        raise NotImplementedError()
+