# HG changeset patch
# User Brian Neal <bgneal@gmail.com>
# Date 1417656293 21600
# Node ID 08bae2b1d2d17568f9253b1447156381cfc74c13
# Parent  0ffdb434d2dd250fd376d2c6745152efac2b3930# Parent  928b97ec55a7eaec58ffaaf9d54ca04553e618e7
Merge with main line.

diff -r 928b97ec55a7 -r 08bae2b1d2d1 core/management/commands/ssl_images.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/management/commands/ssl_images.py	Wed Dec 03 19:24:53 2014 -0600
@@ -0,0 +1,153 @@
+"""
+ssl_images is a custom manage.py command to convert forum post and comment
+images to https. It does this by rewriting the markup:
+    - Images with src = http://surfguitar101.com/something are rewritten to be
+      /something.
+    - Non SG101 images that use http: are downloaded, resized, and uploaded to
+      an S3 bucket. The src attribute is replaced with the new S3 URL.
+"""
+import logging
+from optparse import make_option
+import os.path
+import re
+import signal
+
+from django.core.management.base import NoArgsCommand, CommandError
+from django.conf import settings
+import markdown.inlinepatterns
+
+from comments.models import Comment
+from forums.models import Post
+
+
+LOGFILE = os.path.join(settings.PROJECT_PATH, 'logs', 'ssl_images.log')
+logger = logging.getLogger(__name__)
+
+IMAGE_LINK_RE = re.compile(markdown.inlinepatterns.IMAGE_LINK_RE)
+IMAGE_REF_RE = re.compile(markdown.inlinepatterns.IMAGE_REFERENCE_RE)
+
+quit_flag = False
+
+
+def signal_handler(signum, frame):
+    """SIGINT signal handler"""
+    global quit_flag
+    quit_flag = True
+
+
+def _setup_logging():
+    logger.setLevel(logging.DEBUG)
+    logger.propagate = False
+    handler = logging.FileHandler(filename=LOGFILE, encoding='utf-8')
+    formatter = logging.Formatter('%(asctime)s %(levelname)s %(message)s')
+    handler.setFormatter(formatter)
+    logger.addHandler(handler)
+
+
+class CommentFacade(object):
+    """Wrapper class to provide uniform access to Comments."""
+    def __init__(self, comment):
+        self.comment = comment
+
+    @property
+    def text(self):
+        return self.comment.comment
+
+    @text.setter
+    def text(self, value):
+        self.comment.comment = value
+
+
+class PostFacade(object):
+    """Wrapper class to provide uniform access to Forum posts."""
+    def __init__(self, post):
+        self.post = post
+
+    @property
+    def text(self):
+        return self.post.body
+
+    @text.setter
+    def text(self, value):
+        self.post.body = value
+
+
+def process_post(post):
+    """Process the post object:
+
+    A regex substitution is run on the post's text field. This fixes up image
+    links, getting rid of plain old http sources; either converting to https
+    or relative style links (if the link is to SG101).
+
+    We also do a search for Markdown image reference markup. We aren't expecting
+    these, but we will log something if we see any.
+
+    """
+
+
+class Command(NoArgsCommand):
+    help = "Rewrite forum posts and comments to not use http for images"
+    option_list = NoArgsCommand.option_list + (
+            make_option('--forums',
+                action='store_true',
+                default=False,
+                help="process forum posts"),
+            make_option('--comments',
+                action='store_true',
+                default=False,
+                help="process comments"),
+            make_option('-i', '--i',
+                type='int',
+                help="optional first slice index; the i in [i:j]"),
+            make_option('-j', '--j',
+                type='int',
+                help="optional second slice index; the j in [i:j]"),
+            )
+
+    def handle_noargs(self, **options):
+        _setup_logging()
+        logger.info("Starting; arguments received: %s", options)
+
+        do_comments = options['comments']
+        do_forums = options['forums']
+        if do_comments and do_forums:
+            raise CommandError("Please specify --forums or --comments, not both")
+        elif not do_comments and not do_forums:
+            raise CommandError("Please specify --forums or --comments")
+
+        if do_comments:
+            qs = Comment.objects.all()
+            facade = CommentFacade
+        else:
+            qs = Post.objects.all()
+            facade = PostFacade
+
+        i, j = options['i'], options['j']
+
+        if i is not None and i < 0:
+            raise CommandError("-i must be >= 0")
+        if j is not None and j < 0:
+            raise CommandError("-j must be >= 0")
+        if j is not None and i is not None and j <= i:
+            raise CommandError("-j must be > -i")
+
+        if i is not None and j is not None:
+            qs = qs[i:j]
+        elif i is not None and j is None:
+            qs = qs[i:]
+        elif i is None and j is not None:
+            qs = qs[:j]
+
+        # Install signal handler for ctrl-c
+        signal.signal(signal.SIGINT, signal_handler)
+
+        s = []
+        for model in qs.iterator():
+            if quit_flag:
+                logger.warning("SIGINT received, exiting")
+            obj = facade(model)
+            process_post(obj)
+            s.append(obj.text)
+
+        import pprint
+        pprint.pprint(s)