--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gpp/downloads/management/commands/dlwgetcat.py	Wed Dec 21 01:08:21 2011 +0000
@@ -0,0 +1,57 @@
+"""
+dlwgetcat - a management command to produce a bash script that wgets all the
+files in a given category.
+
+"""
+import os.path
+
+from django.core.management.base import LabelCommand, CommandError
+from django.template.loader import render_to_string
+from django.template.defaultfilters import slugify
+from django.contrib.sites.models import Site
+from django.conf import settings
+
+from downloads.models import Category, Download
+
+
+class Command(LabelCommand):
+    help = ("Produce on standard output a bash script that wgets all the files"
+            " in a category. The files are downloaded with a slugified name.")
+    
+    args = "category-slug"
+
+    def handle_label(self, slug, **options):
+        """
+        Render a template using the downloads in a given category and send it to
+        stdout.
+
+        """
+        try:
+            category = Category.objects.get(slug=slug)
+        except Category.DoesNotExist:
+            raise CommandError("category slug '%s' does not exist" % slug)
+
+        downloads = Download.public_objects.filter(category=category).order_by(
+                'title').select_related()
+
+        current_site = Site.objects.get_current()
+
+        # Create new destination names for the files since the uploaders often
+        # give the files terrible names. The new names will be slugified
+        # versions of the titles, with the same extension.
+
+        for dl in downloads:
+            ext = os.path.splitext(dl.file.name)[1]
+            dl.dest_filename = slugify(dl.title) + ext
+
+            # build a full URL to the download
+            dl.full_url = 'http://%s%s%s' % (current_site.domain,
+                    settings.MEDIA_URL, dl.file.name)
+
+        output = render_to_string('downloads/commands/wget_cat.html', {
+            'downloads': downloads,
+            })
+
+        # encode it ourselves since it can fail if you try to redirect output to
+        # a file and any of the content is not ASCII...
+        print output.encode('utf-8')