fixed breadcrumbs

moved some code to util.py to clean up views.py
added migration for start of db.

comic/util.py

@@ -0,0 +1,55 @@
+from django.utils.http import urlsafe_base64_encode
+from os import path
+import os
+
+
+class Breadcrumb:
+    def __init__(self):
+        self.name = 'Home'
+        self.url = '/comic/'
+
+    def __str__(self):
+        return self.name
+
+class DirFile:
+    def __init__(self):
+        self.name = ''
+        self.isdir = False
+        self.icon = ''
+        self.iscb = False
+        self.location = ''
+
+    def __str__(self):
+        return self.name
+
+def generate_breadcrumbs(comic_path):
+    output = [Breadcrumb()]
+    prefix = '/comic/'
+    last = ''
+    comic_path = path.normpath(comic_path)
+    folders = comic_path.split(os.sep)
+    for item in folders:
+        if item == '.':
+            continue
+        bc = Breadcrumb()
+        bc.name = item
+        bc.url = prefix + urlsafe_base64_encode(item)
+        output.append(bc)
+        last = path.join(last, item)
+    return output
+
+def generate_directory(base_dir, comic_path):
+    files = []
+    for fn in os.listdir(path.join(base_dir.value, comic_path)):
+        df = DirFile()
+        df.name = fn
+        if path.isdir(path.join(base_dir.value, comic_path, fn)):
+            df.isdir = True
+            df.icon = 'glyphicon-folder-open'
+            df.location = urlsafe_base64_encode(path.join(comic_path, fn))
+        elif fn.lower().endswith('cbz') or fn.lower().endswith('cbr'):
+            df.iscb = True
+            df.icon = 'glyphicon-book'
+            df.location = urlsafe_base64_encode(path.join(comic_path, fn))
+        files.append(df)
+    return files