1 files changed, 66 insertions, 0 deletions
diff --git a/Tools/Scripts/webkitpy/style/patchreader.py b/Tools/Scripts/webkitpy/style/patchreader.py
new file mode 100644
index 000000000..6ac32ded7
--- /dev/null
+++ b/Tools/Scripts/webkitpy/style/patchreader.py
@@ -0,0 +1,66 @@
+# Copyright (C) 2010 Google Inc. All rights reserved.
+# Copyright (C) 2010 Chris Jerdonek (chris.jerdonek@gmail.com)
+# Copyright (C) 2010 ProFUSION embedded systems
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import logging
+
+from webkitpy.common.checkout.diff_parser import DiffParser
+
+
+_log = logging.getLogger(__name__)
+
+
+class PatchReader(object):
+    """Supports checking style in patches."""
+
+    def __init__(self, text_file_reader):
+        """Create a PatchReader instance.
+
+        Args:
+          text_file_reader: A TextFileReader instance.
+
+        """
+        self._text_file_reader = text_file_reader
+
+    def check(self, patch_string):
+        """Check style in the given patch."""
+        patch_files = DiffParser(patch_string.splitlines()).files
+
+        for path, diff_file in patch_files.iteritems():
+            line_numbers = diff_file.added_or_modified_line_numbers()
+            _log.debug('Found %s new or modified lines in: %s' % (len(line_numbers), path))
+
+            if not line_numbers:
+                # Don't check files which contain only deleted lines
+                # as they can never add style errors. However, mark them as
+                # processed so that we count up number of such files.
+                self._text_file_reader.count_delete_only_file()
+                continue
+
+            self._text_file_reader.process_file(file_path=path, line_numbers=line_numbers)