fix download issues

[nhentai.git] / nhentai / utils.py

diff --git a/nhentai/utils.py b/nhentai/utils.py
index abcdaa7c10a4b8d581d6266f03b0af8402ac20a2..f884d2f0901d2306eedb1fcc315f775725e042c5 100644 (file)
--- a/nhentai/utils.py
+++ b/nhentai/utils.py
@@ -1,4 +1,13 @@
 # coding: utf-8
+from __future__ import unicode_literals, print_function
+
+import sys
+import os
+import string
+import zipfile
+import shutil
+from nhentai.logger import logger
+
 
 class _Singleton(type):
     """ A metaclass that creates a Singleton base class when called. """
@@ -10,7 +19,7 @@ class _Singleton(type):
         return cls._instances[cls]
 
 
-class Singleton(_Singleton('SingletonMeta', (object,), {})):
+class Singleton(_Singleton(str('SingletonMeta'), (object,), {})):
     pass
 
 
@@ -18,6 +27,101 @@ def urlparse(url):
     try:
         from urlparse import urlparse
     except ImportError:
-        import urllib.parse as urlparse
+        from urllib.parse import urlparse
 
     return urlparse(url)
+
+
+def readfile(path):
+    loc = os.path.dirname(__file__)
+
+    with open(os.path.join(loc, path), 'r') as file:
+        return file.read()
+
+
+def generate_html(output_dir='.', doujinshi_obj=None):
+    image_html = ''
+
+    if doujinshi_obj is not None:
+        doujinshi_dir = os.path.join(output_dir, doujinshi_obj.filename)
+    else:
+        doujinshi_dir = '.'
+
+    file_list = os.listdir(doujinshi_dir)
+    file_list.sort()
+
+    for image in file_list:
+        if not os.path.splitext(image)[1] in ('.jpg', '.png'):
+            continue
+
+        image_html += '<img src="{0}" class="image-item"/>\n'\
+            .format(image)
+
+    html = readfile('viewer/index.html')
+    css = readfile('viewer/styles.css')
+    js = readfile('viewer/scripts.js')
+
+    if doujinshi_obj is not None:
+        title = doujinshi_obj.name
+        if sys.version_info < (3, 0):
+            title = title.encode('utf-8')
+    else:
+        title = 'nHentai HTML Viewer'
+
+    data = html.format(TITLE=title, IMAGES=image_html, SCRIPTS=js, STYLES=css)
+    try:
+        if sys.version_info < (3, 0):
+            with open(os.path.join(doujinshi_dir, 'index.html'), 'w') as f:
+                f.write(data)
+        else:
+            with open(os.path.join(doujinshi_dir, 'index.html'), 'wb') as f:
+                f.write(data.encode('utf-8'))
+
+        logger.log(15, 'HTML Viewer has been write to \'{0}\''.format(os.path.join(doujinshi_dir, 'index.html')))
+    except Exception as e:
+        logger.warning('Writen HTML Viewer failed ({})'.format(str(e)))
+
+
+def generate_cbz(output_dir='.', doujinshi_obj=None, rm_origin_dir=False):
+    if doujinshi_obj is not None:
+        doujinshi_dir = os.path.join(output_dir, doujinshi_obj.filename)
+        cbz_filename = os.path.join(os.path.join(doujinshi_dir, '..'), '%s.cbz' % doujinshi_obj.id)
+    else:
+        cbz_filename = './doujinshi.cbz'
+        doujinshi_dir = '.'
+
+    file_list = os.listdir(doujinshi_dir)
+    file_list.sort()
+
+    logger.info('Writing CBZ file to path: {}'.format(cbz_filename))
+    with zipfile.ZipFile(cbz_filename, 'w') as cbz_pf:
+        for image in file_list:
+            image_path = os.path.join(doujinshi_dir, image)
+            cbz_pf.write(image_path, image)
+
+    if rm_origin_dir:
+        shutil.rmtree(doujinshi_dir, ignore_errors=True)
+
+    logger.log(15, 'Comic Book CBZ file has been write to \'{0}\''.format(doujinshi_dir))
+
+
+def format_filename(s):
+    """Take a string and return a valid filename constructed from the string.
+Uses a whitelist approach: any characters not present in valid_chars are
+removed. Also spaces are replaced with underscores.
+
+Note: this method may produce invalid filenames such as ``, `.` or `..`
+When I use this method I prepend a date string like '2009_01_15_19_46_32_'
+and append a file extension like '.txt', so I avoid the potential of using
+an invalid filename.
+
+"""
+    valid_chars = "-_.()[] %s%s" % (string.ascii_letters, string.digits)
+    filename = ''.join(c for c in s if c in valid_chars)
+    filename = filename.replace(' ', '_')  # I don't like spaces in filenames.
+    if len(filename) > 100:
+        filename = filename[:100] + '...]'
+
+    # Remove [] from filename
+    filename = filename.replace('[]', '')
+    return filename