add a revert button to return scan gallery to first page for this book

[redakcja.git] / apps / cover / views.py

diff --git a/apps/cover/views.py b/apps/cover/views.py
index 29fd117..0f341ad 100644 (file)
--- a/apps/cover/views.py
+++ b/apps/cover/views.py
@@ -1,7 +1,7 @@
 # Create your views here.
 import os.path
 from django.conf import settings
-from django.http import HttpResponse, Http404
+from django.http import HttpResponse, HttpResponseRedirect, Http404
 from catalogue.models import Chunk
 from django.views.decorators.http import require_POST
 from django.views.decorators.csrf import csrf_exempt
@@ -10,6 +10,7 @@ from django.shortcuts import render
 
 PREVIEW_SIZE = (216, 300)
 
+
 def preview(request, book, chunk=None, rev=None):
     """Creates a cover image.
 
@@ -31,8 +32,11 @@ def preview(request, book, chunk=None, rev=None):
         if revision is None:
             raise Http404
     xml = revision.materialize().encode('utf-8')
-    
-    info = BookInfo.from_string(xml)
+
+    try:
+        info = BookInfo.from_string(xml)
+    except:
+        return HttpResponseRedirect(os.path.join(settings.STATIC_URL, "img/sample_cover.png"))
     cover = WLCover(info)
     response = HttpResponse(mimetype=cover.mime_type())
     image = cover.image().resize(PREVIEW_SIZE, Image.ANTIALIAS)
@@ -51,7 +55,10 @@ def preview_from_xml(request):
     from librarian.dcparser import BookInfo
 
     xml = request.POST['xml']
-    info = BookInfo.from_string(xml.encode('utf-8'))
+    try:
+        info = BookInfo.from_string(xml.encode('utf-8'))
+    except:
+        return HttpResponse(os.path.join(settings.STATIC_URL, "img/sample_cover.png"))
     coverid = sha1(etree.tostring(info.to_etree())).hexdigest()
     cover = WLCover(info)
 
@@ -64,3 +71,38 @@ def preview_from_xml(request):
     image = cover.image().resize(PREVIEW_SIZE, Image.ANTIALIAS)
     image.save(os.path.join(settings.MEDIA_ROOT, fname))
     return HttpResponse(os.path.join(settings.MEDIA_URL, fname))
+
+
+def flickr(request):
+    url = request.POST.get('flickr_url')
+    if url:
+        import re
+        from urllib2 import urlopen
+
+        html = urlopen(url).read()
+        match = re.search(r'<a href="([^"]*)" rel="license cc:license">Some rights reserved</a>', html)
+        try:
+            assert match
+            license_url = match.group(1)
+            re_license = re.compile(r'http://creativecommons.org/licenses/([^/]*)/([^/]*)/.*')
+            m = re_license.match(license_url)
+            assert m
+            license_name = 'CC %s %s' % (m.group(1).upper(), m.group(2))
+        except AssertionError:
+            license_name = 'NIEZNANA LICENCJA'
+
+        m = re.search(r'<strong class="username">By <a href="[^"]*">([^<]*)</a></strong>', html)
+        if m:
+            author = m.group(1)
+        else:
+            author = "NIEZNANY AUTOR"
+
+        url_size = url.rstrip('/') + '/sizes/o/'
+        html = urlopen(url_size).read()
+        m = re.search(r'<div id="allsizes-photo">\s*<img src="([^"]*)"', html)
+        if m:
+            image_url = m.group(1)
+    else:
+        url = ""
+
+    return render(request, 'cover/flickr.html', locals())