diff -r ebaad720f88b -r 526ebd3988b0 web/lib/django_extensions/management/commands/export_emails.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/django_extensions/management/commands/export_emails.py	Wed Jan 20 12:37:40 2010 +0100
@@ -0,0 +1,114 @@
+from django.core.management.base import BaseCommand, CommandError
+from django.contrib.auth.models import User, Group
+from optparse import make_option
+from sys import stdout
+from csv import writer
+
+FORMATS = [
+    'address',
+    'google',
+    'outlook',
+    'linkedin',
+    'vcard',
+]
+
+def full_name(first_name, last_name, username, **extra):
+    name = u" ".join(n for n in [first_name, last_name] if n)
+    if not name: return username
+    return name
+
+class Command(BaseCommand):
+    option_list = BaseCommand.option_list + (
+        make_option('--group', '-g', action='store', dest='group', default=None,
+            help='Limit to users which are part of the supplied group name'),
+        make_option('--format', '-f', action='store', dest='format', default=FORMATS[0],
+            help="output format. May be one of '" + "', '".join(FORMATS) + "'."),
+    )
+
+    help = ("Export user email address list in one of a number of formats.")
+    args = "[output file]"
+    label = 'filename to save to'
+
+    requires_model_validation = True
+    can_import_settings = True
+    encoding = 'utf-8' # RED_FLAG: add as an option -DougN
+
+    def handle(self, *args, **options):
+        if len(args) > 1:
+            raise CommandError("extra arguments supplied")
+        group = options['group']
+        if group and not Group.objects.filter(name=group).count()==1:
+            names = u"', '".join(g['name'] for g in Group.objects.values('name')).encode('utf-8')
+            if names: names = "'" + names + "'."
+            raise CommandError("Unknown group '" + group + "'. Valid group names are: " + names)
+        if len(args) and args[0] != '-':
+            outfile = file(args[0], 'w')
+        else:
+            outfile = stdout
+
+        qs = User.objects.all().order_by('last_name', 'first_name', 'username', 'email')
+        if group: qs = qs.filter(group__name=group).distinct()
+        qs = qs.values('last_name', 'first_name', 'username', 'email')
+        getattr(self, options['format'])(qs, outfile)
+
+    def address(self, qs, out):
+        """simple single entry per line in the format of:
+            "full name" <my@address.com>;
+        """
+        out.write(u"\n".join(u'"%s" <%s>;' % (full_name(**ent), ent['email']) 
+                             for ent in qs).encode(self.encoding))
+        out.write("\n")
+
+    def google(self, qs, out):
+        """CSV format suitable for importing into google GMail
+        """
+        csvf = writer(out)
+        csvf.writerow(['Name', 'Email'])
+        for ent in qs:
+            csvf.writerow([full_name(**ent).encode(self.encoding), 
+                           ent['email'].encode(self.encoding)])
+
+    def outlook(self, qs, out):
+        """CSV format suitable for importing into outlook
+        """
+        csvf = writer(out)
+        columns = ['Name','E-mail Address','Notes','E-mail 2 Address','E-mail 3 Address',
+                   'Mobile Phone','Pager','Company','Job Title','Home Phone','Home Phone 2',
+                   'Home Fax','Home Address','Business Phone','Business Phone 2',
+                   'Business Fax','Business Address','Other Phone','Other Fax','Other Address']
+        csvf.writerow(columns)
+        empty = [''] * (len(columns) - 2)
+        for ent in qs:
+            csvf.writerow([full_name(**ent).encode(self.encoding), 
+                           ent['email'].encode(self.encoding)] + empty)
+
+    def linkedin(self, qs, out):
+        """CSV format suitable for importing into linkedin Groups.
+        perfect for pre-approving members of a linkedin group.
+        """
+        csvf = writer(out)
+        csvf.writerow(['First Name', 'Last Name', 'Email'])
+        for ent in qs:
+            csvf.writerow([ent['first_name'].encode(self.encoding), 
+                           ent['last_name'].encode(self.encoding), 
+                           ent['email'].encode(self.encoding)])
+
+    def vcard(self, qs, out):
+        try:
+            import vobject
+        except ImportError:
+            print self.style.ERROR_OUTPUT("Please install python-vobject to use the vcard export format.")
+            import sys
+            sys.exit(1)
+        for ent in qs:
+            card = vobject.vCard()
+            card.add('fn').value = full_name(**ent)
+            if not ent['last_name'] and not ent['first_name']:
+                # fallback to fullname, if both first and lastname are not declared
+                card.add('n').value = vobject.vcard.Name(full_name(**ent))
+            else:
+                card.add('n').value = vobject.vcard.Name(ent['last_name'], ent['first_name'])
+            emailpart = card.add('email')
+            emailpart.value = ent['email']
+            emailpart.type_param = 'INTERNET'
+            out.write(card.serialize().encode(self.encoding))