minidump_stackwalk should use MinidumpProcessor (#64). r=bryner

- minidump_stackwalk is now much more useful as a debugging tool and
   even as a standalone tool.
 - Reimplementation of minidump_stackwalk around MinidumpProcessor.
 - minidump_stackwalk displays all pertinent information returned by
   MinidumpProcessor in the ProcessState.
 - New PathnameStripper::File static utility method to display only the
   leaf file name in a pathname, cleaning up minidump_stackwalk's output.
 - New SimpleSymbolSupplier class, which implements a simple
   filesystem-based symbol supplier compatible with the layout used by
   Microsoft Symbol Server and its client cache.
 - minidump_stackwalk now accepts an optional second argument, a pathname
   to use as a symbol directory for a SimpleSymbolSupplier.
 - Updated test data to be compatible with SimpleSymbolSupplier, and added
   test data for kernel32.pdb.  Test data converted from CRLF line endings
   to LF.

http://groups.google.com/group/airbag-dev/browse_thread/thread/cce30a84f6b2d728


git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@53 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/processor/pathname_stripper.h

@@ -0,0 +1,53 @@
+// Copyright (c) 2006, Google Inc.
+// All rights reserved.
+//
+// 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.
+
+// pathname_stripper.h: Manipulates pathnames into their component parts.
+//
+// Author: Mark Mentovai
+
+#ifndef PROCESSOR_PATHNAME_STRIPPER_H__
+#define PROCESSOR_PATHNAME_STRIPPER_H__
+
+#include <string>
+
+namespace google_airbag {
+
+using std::string;
+
+class PathnameStripper {
+ public:
+  // Given path, a pathname with components separated by slashes (/) or
+  // backslashes (\), returns the trailing component, without any separator.
+  // If path ends in a separator character, returns an empty string.
+  static string File(const string &path);
+};
+
+}  // namespace google_airbag
+
+#endif  // PROCESSOR_PATHNAME_STRIPPER_H__