Added `be depend'.

This closes bug 7ec2c071-9630-42b0-b08a-9854616f9144.  BE is now bug
free ;).  At least until the next commit :p.

Writing depend.py turned up a few style points in tag.py which I also
fixed.

1 files changed, 83 insertions, 0 deletions

diff --git a/becommands/depend.py b/becommands/depend.py
new file mode 100644
index 0000000..8dbb2eb
--- /dev/null
+++ b/becommands/depend.py
@@ -0,0 +1,83 @@
+# Copyright (C) 2009 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+"""Add/remove bug dependencies."""
+from libbe import cmdutil, bugdir
+import os, copy
+__desc__ = __doc__
+
+def execute(args, test=False):
+    """
+    >>> from libbe import utility
+    >>> bd = bugdir.simple_bug_dir()
+    >>> bd.save()
+    >>> os.chdir(bd.root)
+    >>> execute(["a", "b"], test=True)
+    Blocks on a:
+    b
+    >>> execute(["a"], test=True)
+    Blocks on a:
+    b
+    >>> execute(["-r", "a", "b"], test=True)
+    """
+    parser = get_parser()
+    options, args = parser.parse_args(args)
+    cmdutil.default_complete(options, args, parser,
+                             bugid_args={0: lambda bug : bug.active==True,
+                                         1: lambda bug : bug.active==True})
+
+    if len(args) < 1:
+        raise cmdutil.UsageError("Please a bug id.")
+    if len(args) > 2:
+        help()
+        raise cmdutil.UsageError("Too many arguments.")
+    
+    bd = bugdir.BugDir(from_disk=True, manipulate_encodings=not test)
+    bugA = bd.bug_from_shortname(args[0])
+    if len(args) == 2:
+        bugB = bd.bug_from_shortname(args[1])
+        estrs = bugA.extra_strings
+        depend_string = "BLOCKED-BY:%s" % bugB.uuid
+        if options.remove == True:
+            estrs.remove(depend_string)
+        else: # add the dependency
+            estrs.append(depend_string)
+        bugA.extra_strings = estrs # reassign to notice change
+        bugA.save()
+
+    depends = []
+    for estr in bugA.extra_strings:
+        if estr.startswith("BLOCKED-BY:"):
+            depends.append(estr[11:])
+    if len(depends) > 0:
+        print "Blocks on %s:" % bugA.uuid
+        print '\n'.join(depends)
+
+def get_parser():
+    parser = cmdutil.CmdOptionParser("be depend BUG-ID [BUG-ID]")
+    parser.add_option("-r", "--remove", action="store_true", dest="remove",
+                      help="Remove dependency (instead of adding it)")
+    return parser
+
+longhelp="""
+Set a dependency with the second bug (B) blocking the first bug (A).
+If bug B is not specified, just print a list of bugs blocking (A).
+
+To search for bugs blocked by a particular bug, try
+  $ be list --extra-strings BLOCKED-BY:<your-bug-uuid>
+"""
+
+def help():
+    return get_parser().help_str() + longhelp