changed views to use Database data to read files.

moved alot of the functionality to the models.
changed the file access so that it ignores the extension and just attempts rar and zip access.

comic/admin.py

@@ -1,8 +1,16 @@
 from django.contrib import admin
-from comic.models import Setting
+from comic.models import Setting, ComicBook, ComicPage
 
 # Register your models here.
 @admin.register(Setting)
 class SettingAdmin(admin.ModelAdmin):
     list_display = ('name', 'value')
 
+
+@admin.register(ComicBook)
+class ComicBookAdmin(admin.ModelAdmin):
+    list_display = ('file_name', 'last_read_page')
+
+@admin.register(ComicPage)
+class ComicPageAdmin(admin.ModelAdmin):
+    list_display = ('Comic', 'index', 'page_file_name', 'content_type')

comic/models.py

@@ -1,5 +1,6 @@
 from django.db import models
-
+from unrar import rarfile
+import zipfile
 # Create your models here.
 
 class Setting(models.Model):
@@ -7,13 +8,57 @@ class Setting(models.Model):
     value = models.TextField()
 
     def __str__(self):
-
         return '"%s":"%s"' % (self.name, self.value)
 
+    def __unicode__(self):
+        return self.__str__()
+
 class ComicBook(models.Model):
     file_name = models.CharField(max_length=100, unique=True)
     last_read_page = models.IntegerField()
 
+    class Comic:
+        def __init__(self):
+            self.name = ''
+            self.index = 0
+    class Navigation:
+        def __init__(self):
+            self.next_index = 0
+            self.next_path = ''
+            self.prev_index = 0
+            self.prev_path = ''
+            self.cur_index = 0
+            self.cur_path = ''
+    def __str__(self):
+        return self.file_name
+    def get_image(self, archive_path, page):
+        try:
+            archive = rarfile.RarFile(archive_path)
+        except rarfile.BadRarFile:
+            archive = zipfile.ZipFile(archive_path)
+        except zipfile.BadZipfile:
+            return False
+        page_obj = ComicPage.objects.get(Comic=self, index=page)
+
+        return (archive.open(page_obj.page_file_name), page_obj.content_type)
+
+    def nav(self, comic_path, page):
+        out = self.Navigation()
+        out.cur_index = page
+        out.cur_path = comic_path
+        out.prev_index = page - 1
+        out.next_index = page + 1
+        out.prev_path = comic_path
+        out.next_path = comic_path
+        return out
+    def pages(self):
+        out = []
+        for item in ComicPage.objects.filter(Comic=self).order_by('index'):
+            i = self.Comic()
+            i.name = item.page_file_name
+            i.index = item.index
+            out.append(i)
+        return out
 class ComicPage(models.Model):
     Comic = models.ForeignKey(ComicBook)
     index = models.IntegerField()

comic/templates/comic/read_comic.html

@@ -11,25 +11,25 @@
 {% block content %}
 <center>
 <br/>
-    <a href="/comic/read/{{ file_name }}/{{ nav.next }}/">
-        <img src="/comic/read/{{ file_name }}/{{ nav.cur }}/img" class="img-responsive">
+    <a href="/comic/read/{{ nav.next_path }}/{{ nav.next_index }}/">
+        <img src="/comic/read/{{ nav.cur_path }}/{{ nav.cur_index }}/img" class="img-responsive">
     </a>
 <br/>
 <div class="btn-group">
-    <a href="/comic/read/{{ file_name }}/{{ nav.prev }}/" class="btn btn-default">Prev</a>
-    {% if pages %}
+    <a href="/comic/read/{{ nav.prev_path }}/{{ nav.prev_index }}/" class="btn btn-default">Prev</a>
+    {% if book.pages %}
         <div class="btn-group dropup">
-            <button type="button" data-toggle="dropdown" class="btn btn-default dropdown-toggle ">{{ orig_file_name}}<span class="caret"></span></button>
+            <button type="button" data-toggle="dropdown" class="btn btn-default dropdown-toggle ">{{ orig_file_name }}<span class="caret"></span></button>
             <ul class="dropdown-menu" id="dropdown-list">
-                {% for file in pages %}
-                    <li><a href="/comic/read/{{ file_name }}/{{ file.index }}/">{{ file.name }}</a></li>
+                {% for file in book.pages %}
+                    <li><a href="/comic/read/{{ nav.cur_path }}/{{ file.index }}/">{{ file.name }}</a></li>
                 {% endfor %}
             </ul>
         </div>
     {% else %}
-        <p>No comics.</p>
+        <button class="btn btn-default">No Pages</button>
     {% endif %}
-    <a href="/comic/read/{{ file_name }}/{{ nav.next }}/" class="btn btn-default">Next</a>
+    <a href="/comic/read/{{ nav.next_path }}/{{ nav.next_index }}/" class="btn btn-default">Next</a>
 </div>
 </center>
 {% endblock %}

comic/urls.py

@@ -4,9 +4,9 @@ from . import views
 
 urlpatterns = [
     url(r'^$', views.index, name='index'),
-    url(r'^(?P<comic_path>[\w=]+)\/$', views.index, name='index'),
-    url(r'^read\/(?P<comic_path>[\w=]+)\/(?P<page>[0-9]+)\/$', views.read_comic, name='read_comic'),
-    url(r'^read\/(?P<comic_path>[\w=]+)\/(?P<page>[0-9]+)\/img$', views.get_image, name='get_image'),
+    url(r'^(?P<comic_path>[\w]+)\/$', views.index, name='index'),
+    url(r'^read\/(?P<comic_path>[\w]+)\/(?P<page>[0-9]+)\/$', views.read_comic, name='read_comic'),
+    url(r'^read\/(?P<comic_path>[\w]+)\/(?P<page>[0-9]+)\/img$', views.get_image, name='get_image'),
     url(r"^file\/(?P<page>[0-9]+)\/(?P<file_name>[\w.\s'\(\)\-]+)\/$", views.read_comic, name='read_comic'),
     url(r"^file\/(?P<page>[0-9]+)\/(?P<file_name>[\w.\s'\(\)\-]+)\/img$", views.get_image, name='get_image'),
 ]

comic/util.py

@@ -1,4 +1,7 @@
 from django.utils.http import urlsafe_base64_encode
+from comic.models import ComicBook, ComicPage
+from unrar import rarfile
+import zipfile
 from os import path
 import os
 
@@ -11,6 +14,7 @@ class Breadcrumb:
     def __str__(self):
         return self.name
 
+
 class DirFile:
     def __init__(self):
         self.name = ''
@@ -22,6 +26,54 @@ class DirFile:
     def __str__(self):
         return self.name
 
+
+
+def process_comic_book(base_dir, comic_path, comic_file_name):
+    try:
+        cbx = rarfile.RarFile(path.join(base_dir.value, comic_path))
+    except rarfile.BadRarFile:
+        cbx = zipfile.ZipFile(path.join(base_dir.value, comic_path))
+    except zipfile.BadZipfile:
+        return False
+
+    book = ComicBook(file_name=comic_file_name,
+                     last_read_page=0)
+    book.save()
+    i = 0
+    for f in cbx.namelist():
+        ext = f.lower()[-3:]
+        if ext in ['jpg', 'jpeg']:
+            page = ComicPage(Comic=book,
+                             index=i,
+                             page_file_name=f,
+                             content_type='image/jpeg')
+            page.save()
+            i += 1
+        elif ext == 'png':
+            page = ComicPage(Comic=book,
+                             index=i,
+                             page_file_name=f,
+                             content_type='image/png')
+            page.save()
+            i += 1
+        elif ext == 'bmp':
+            page = ComicPage(Comic=book,
+                             index=i,
+                             page_file_name=f,
+                             content_type='image/bmp')
+            page.save()
+            i += 1
+        elif ext == 'gif':
+            page = ComicPage(Comic=book,
+                             index=i,
+                             page_file_name=f,
+                             content_type='image/gif')
+            page.save()
+            i += 1
+
+    return book
+
+
 def generate_breadcrumbs(comic_path):
     output = [Breadcrumb()]
     prefix = '/comic/'
@@ -33,11 +85,12 @@ def generate_breadcrumbs(comic_path):
             continue
         bc = Breadcrumb()
         bc.name = item
-        bc.url = prefix + urlsafe_base64_encode(item)
-        output.append(bc)
         last = path.join(last, item)
+        bc.url = prefix + urlsafe_base64_encode(last)
+        output.append(bc)
     return output
 
+
 def generate_directory(base_dir, comic_path):
     files = []
     for fn in os.listdir(path.join(base_dir.value, comic_path)):
@@ -52,4 +105,4 @@ def generate_directory(base_dir, comic_path):
             df.icon = 'glyphicon-book'
             df.location = urlsafe_base64_encode(path.join(comic_path, fn))
         files.append(df)
-    return files
+    return files

comic/views.py

@@ -1,25 +1,13 @@
 from django.http import HttpResponse
-from django.template import RequestContext, loader
+from django.template import RequestContext
 from django.utils.http import urlsafe_base64_decode
 from django.shortcuts import render
 
-from comic.models import Setting
-from util import generate_breadcrumbs, generate_directory
+from comic.models import Setting, ComicBook
+from util import generate_breadcrumbs, generate_directory, process_comic_book
 
-from unrar import rarfile
-from zipfile import ZipFile
 from os import path
 
-class Comic:
-    def __init__(self):
-        self.name = ''
-        self.index = 0
-class Navigation:
-    def __init__(self):
-        self.next = 0
-        self.prev = 0
-        self.cur = 0
-
 def index(request, comic_path=''):
     base_dir = Setting.objects.get(name='BASE_DIR')
     comic_path = urlsafe_base64_decode(comic_path)
@@ -33,30 +21,21 @@ def index(request, comic_path=''):
 
 
 def read_comic(request, comic_path, page):
-    encoded = comic_path
-    comic_path = urlsafe_base64_decode(comic_path)
-    breadcrumbs = generate_breadcrumbs(comic_path)
     base_dir = Setting.objects.get(name='BASE_DIR')
-    if comic_path.lower().endswith('cbr'):
-        cbx = rarfile.RarFile(path.join(base_dir.value, comic_path))
-    elif comic_path.lower().endswith('cbz'):
-        cbx = ZipFile(path.join(base_dir.value, comic_path))
-    nav = Navigation()
     page = int(page)
-    nav.cur = page
-    nav.next = page + 1
-    nav.prev = page - 1
-    pages = []
-    for idx, name in enumerate(cbx.namelist()):
-        comic = Comic()
-        comic.name = name
-        comic.index = idx
-        pages.append(comic)
+    decoded_path = urlsafe_base64_decode(comic_path)
+    breadcrumbs = generate_breadcrumbs(decoded_path)
+    _, comic_file_name = path.split(decoded_path)
+    try:
+        book = ComicBook.objects.get(file_name=comic_file_name)
+    except ComicBook.DoesNotExist:
+        book = process_comic_book(base_dir, decoded_path, comic_file_name)
+    book.last_read_page = page
+    book.save()
     context = RequestContext(request, {
-        'pages': pages,
-        'file_name': encoded,
-        'orig_file_name': pages[nav.cur].name,
-        'nav': nav,
+        'book': book,
+        'orig_file_name': book.pages()[page].name,
+        'nav': book.nav(comic_path, page),
         'breadcrumbs': breadcrumbs,
     })
     return render(request, 'comic/read_comic.html', context)
@@ -64,28 +43,13 @@ def read_comic(request, comic_path, page):
 
 def get_image(request, comic_path, page):
     base_dir = Setting.objects.get(name='BASE_DIR')
-    comic_path = urlsafe_base64_decode(comic_path)
-    if comic_path.lower().endswith('cbr'):
-        cbx = rarfile.RarFile(path.join(base_dir.value, comic_path))
-    elif comic_path.lower().endswith('cbz'):
-        cbx = ZipFile(path.join(base_dir.value, comic_path))
     page = int(page)
-    page_file = cbx.namelist()[page]
-    file_name = str(page_file).lower()
-    if file_name.endswith('jpg') or file_name.endswith('jpeg'):
-        content = 'image/JPEG'
-    elif file_name.endswith('png'):
-        content = 'image/png'
-    elif file_name.endswith('bmp'):
-        content = 'image/bmp'
-    elif file_name.endswith('gif'):
-        content = 'image/gif'
-    else:
-        content = 'text/plain'
+    decoded_path = urlsafe_base64_decode(comic_path)
+    _, comic_file_name = path.split(decoded_path)
     try:
-        img = cbx.open(file)
-    except KeyError:
-        img = cbx.open(page_file)
+        book = ComicBook.objects.get(file_name=comic_file_name)
+    except ComicBook.DoesNotExist:
+        book = process_comic_book(base_dir, decoded_path, comic_file_name)
+    full_path = path.join(base_dir.value, decoded_path)
+    img, content = book.get_image(full_path, page)
     return HttpResponse(img.read(), content_type=content)
-
-