diff -r 000000000000 -r 4f2f89ce4247 WebKitTools/Scripts/webkitpy/common/system/user.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebKitTools/Scripts/webkitpy/common/system/user.py	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,117 @@
+# Copyright (c) 2009, 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.
+
+import logging
+import os
+import shlex
+import subprocess
+import sys
+import webbrowser
+
+
+_log = logging.getLogger("webkitpy.common.system.user")
+
+
+try:
+    import readline
+except ImportError:
+    if sys.platform != "win32":
+        # There is no readline module for win32, not much to do except cry.
+        _log.warn("Unable to import readline.")
+    # FIXME: We could give instructions for non-mac platforms.
+    # Lack of readline results in a very bad user experiance.
+    if sys.platform == "mac":
+        _log.warn("If you're using MacPorts, try running:")
+        _log.warn("  sudo port install py25-readline")
+
+
+class User(object):
+    # FIXME: These are @classmethods because bugzilla.py doesn't have a Tool object (thus no User instance).
+    @classmethod
+    def prompt(cls, message, repeat=1, raw_input=raw_input):
+        response = None
+        while (repeat and not response):
+            repeat -= 1
+            response = raw_input(message)
+        return response
+
+    @classmethod
+    def prompt_with_list(cls, list_title, list_items):
+        print list_title
+        i = 0
+        for item in list_items:
+            i += 1
+            print "%2d. %s" % (i, item)
+        result = int(cls.prompt("Enter a number: ")) - 1
+        return list_items[result]
+
+    def edit(self, files):
+        editor = os.environ.get("EDITOR") or "vi"
+        args = shlex.split(editor)
+        # Note: Not thread safe: http://bugs.python.org/issue2320
+        subprocess.call(args + files)
+
+    def edit_changelog(self, files):
+        edit_application = os.environ.get("CHANGE_LOG_EDIT_APPLICATION")
+        if edit_application and sys.platform == "darwin":
+            # On Mac we support editing ChangeLogs using an application.
+            args = shlex.split(edit_application)
+            print "Using editor in the CHANGE_LOG_EDIT_APPLICATION environment variable."
+            print "Please quit the editor application when done editing."
+            if edit_application.find("Xcode.app"):
+                print "Instead of using Xcode.app, consider using EDITOR=\"xed --wait\"."
+            subprocess.call(["open", "-W", "-n", "-a"] + args + files)
+            return
+        self.edit(files)
+
+    def page(self, message):
+        pager = os.environ.get("PAGER") or "less"
+        try:
+            # Note: Not thread safe: http://bugs.python.org/issue2320
+            child_process = subprocess.Popen([pager], stdin=subprocess.PIPE)
+            child_process.communicate(input=message)
+        except IOError, e:
+            pass
+
+    def confirm(self, message=None):
+        if not message:
+            message = "Continue?"
+        response = raw_input("%s [Y/n]: " % message)
+        return not response or response.lower() == "y"
+
+    def can_open_url(self):
+        try:
+            webbrowser.get()
+            return True
+        except webbrowser.Error, e:
+            return False
+
+    def open_url(self, url):
+        if not self.can_open_url():
+            _log.warn("Failed to open %s" % url)
+        webbrowser.open(url)