Merged be.restructure, major internal reorganization.

Added a bunch of classes to make the commands, user interfaces, and
storage backends more abstract and distinct.  This should make it much
easier to extend and maintain BE.

Features:
 * Directory restructured:
   becommands/ -> libbe/commands
   submods sorted by functionality.
 * Lots of new classes:
   Option, Argument, Command
   InputOutput, StorageCallbacks, UserInterface
   Storage
 * Consolidated ID handling in libbe.util.id
 * Transitioned VCS backends for Python-based VCSs from subprocess
   calss to internal python calls.

Plus the user-visible changes:
 * New bugdir/bug/comment ID format replaces old bug:comment format.
 * Deprecated support for `be diff` on Arch and Darcs <= 2.3.1.  A new
   backend abstraction (Storage) makes the former implementation
   ungainly.
 * Improved command completion.
 * Removed commands close, open, email_bugs, 
 * Flipped some arguments
   `be assign BUG-ID [ASSIGNEE]` -> `be status ASSIGNED BUG-ID ...`
   `be severity BUG-ID SEVERITY` -> `be severity SEVERITY BUG-ID ...`
   `be status BUG-ID STATUS` -> `be status STATUS BUG-ID ...`

In the merge:
  * Added 'commit' to list of pagerless commands.
  * Updated doc/README.dev

See
#bea86499-824e-4e77-b085-2d581fa9ccab/1100c966-9671-4bc6-8b68-6d408a910da1#
for a discussion of why the changes were made and some of the
difficulties en-route.

1 files changed, 91 insertions, 0 deletions

diff --git a/libbe/util/encoding.py b/libbe/util/encoding.py
new file mode 100644
index 0000000..7706105
--- /dev/null
+++ b/libbe/util/encoding.py
@@ -0,0 +1,91 @@
+# Copyright (C) 2008-2009 Gianluca Montecchi <gian@grys.it>
+#                         W. Trevor King <wking@drexel.edu>
+#
+# 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.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+"""
+Support input/output/filesystem encodings (e.g. UTF-8).
+"""
+
+import codecs
+import locale
+import sys
+import types
+
+import libbe
+if libbe.TESTING == True:
+    import doctest
+
+
+ENCODING = None # override get_encoding() output by setting this
+
+def get_encoding():
+    """
+    Guess a useful input/output/filesystem encoding...  Maybe we need
+    seperate encodings for input/output and filesystem?  Hmm...
+    """
+    if ENCODING != None:
+        return ENCODING
+    encoding = locale.getpreferredencoding() or sys.getdefaultencoding()
+    if sys.platform != 'win32' or sys.version_info[:2] > (2, 3):
+        encoding = locale.getlocale(locale.LC_TIME)[1] or encoding
+        # Python 2.3 on windows doesn't know about 'XYZ' alias for 'cpXYZ'
+    return encoding
+
+def get_input_encoding():
+    return get_encoding()
+
+def get_output_encoding():
+    return get_encoding()
+
+def get_filesystem_encoding():
+    return get_encoding()
+
+def known_encoding(encoding):
+    """
+    >>> known_encoding("highly-unlikely-encoding")
+    False
+    >>> known_encoding(get_encoding())
+    True
+    """
+    try:
+        codecs.lookup(encoding)
+        return True
+    except LookupError:
+        return False
+
+def get_file_contents(path, mode='r', encoding=None, decode=False):
+    if decode == True:
+        if encoding == None:
+            encoding = get_filesystem_encoding()
+        f = codecs.open(path, mode, encoding)
+    else:
+        f = open(path, mode)
+    contents = f.read()
+    f.close()
+    return contents
+
+def set_file_contents(path, contents, mode='w', encoding=None):
+    if type(contents) == types.UnicodeType:
+        if encoding == None:
+            encoding = get_filesystem_encoding()
+        f = codecs.open(path, mode, encoding)
+    else:
+        f = open(path, mode)
+    f.write(contents)
+    f.close()
+
+if libbe.TESTING == True:
+    suite = doctest.DocTestSuite()