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News downloads: Automagically convert PDF covers to PNG

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This commit is contained in:
Kovid Goyal 2009-12-30 15:50:49 -07:00
parent a07585ef25
commit a6b078e26b
2 changed files with 15 additions and 7 deletions
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14
src/calibre/ebooks/metadata/pdf.py
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@ -3,7 +3,7 @@ __license__ = 'GPL v3'
__copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>' __copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>'
'''Read meta information from PDF files''' '''Read meta information from PDF files'''
import re #import re
from functools import partial from functools import partial
from calibre import prints from calibre import prints
@ -12,15 +12,15 @@ from calibre.ebooks.metadata import MetaInformation, string_to_authors, authors_
pdfreflow, pdfreflow_error = plugins['pdfreflow'] pdfreflow, pdfreflow_error = plugins['pdfreflow']
_isbn_pat = re.compile(r'ISBN[: ]*([-0-9Xx]+)') #_isbn_pat = re.compile(r'ISBN[: ]*([-0-9Xx]+)')
def get_metadata(stream, cover=True): def get_metadata(stream, cover=True):
if pdfreflow is None: if pdfreflow is None:
raise RuntimeError(pdfreflow_error) raise RuntimeError(pdfreflow_error)
raw = stream.read() raw = stream.read()
isbn = _isbn_pat.search(raw) #isbn = _isbn_pat.search(raw)
if isbn is not None: #if isbn is not None:
isbn = isbn.group(1).replace('-', '').replace(' ', '') # isbn = isbn.group(1).replace('-', '').replace(' ', '')
info = pdfreflow.get_metadata(raw, cover) info = pdfreflow.get_metadata(raw, cover)
title = info.get('Title', None) title = info.get('Title', None)
au = info.get('Author', None) au = info.get('Author', None)
@ -29,8 +29,8 @@ def get_metadata(stream, cover=True):
else: else:
au = string_to_authors(au) au = string_to_authors(au)
mi = MetaInformation(title, au) mi = MetaInformation(title, au)
if isbn is not None: #if isbn is not None:
mi.isbn = isbn # mi.isbn = isbn
creator = info.get('Creator', None) creator = info.get('Creator', None)
if creator: if creator:

8
src/calibre/web/feeds/news.py
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@ -823,6 +823,14 @@ class BasicNewsRecipe(Recipe):
cpath = os.path.join(self.output_dir, 'cover.'+ext) cpath = os.path.join(self.output_dir, 'cover.'+ext)
with nested(open(cpath, 'wb'), closing(self.browser.open(cu))) as (cfile, r): with nested(open(cpath, 'wb'), closing(self.browser.open(cu))) as (cfile, r):
cfile.write(r.read()) cfile.write(r.read())
if ext.lower() == 'pdf':
from calibre.ebook.metadata.pdf import get_metadata
stream = open(cpath, 'rb')
mi = get_metadata(stream)
cpath = None
if mi.cover_data and mi.cover_data[1]:
cpath = os.path.join(self.output_dir, 'cover.png')
open(cpath, 'wb').write(mi.cover_data[1])
self.cover_path = cpath self.cover_path = cpath