99 lines
3.1 KiB
Python
99 lines
3.1 KiB
Python
__author__ = 'lemmsh'
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import logging
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logger = logging.getLogger("book_formats")
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import uploader
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import os
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try:
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from wand.image import Image
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use_generic_pdf_cover = False
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except ImportError, e:
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logger.warning('cannot import Image, generating pdf covers for pdf uploads will not work: %s', e)
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use_generic_pdf_cover = True
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try:
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from PyPDF2 import PdfFileReader
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use_pdf_meta = True
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except ImportError, e:
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logger.warning('cannot import PyPDF2, extracting pdf metadata will not work: %s', e)
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use_pdf_meta = False
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try:
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import epub
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use_epub_meta = True
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except ImportError, e:
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logger.warning('cannot import epub, extracting epub metadata will not work: %s', e)
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use_epub_meta = False
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try:
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import fb2
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use_fb2_meta = True
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except ImportError, e:
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logger.warning('cannot import fb2, extracting fb2 metadata will not work: %s', e)
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use_fb2_meta = False
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def process(tmp_file_path, original_file_name, original_file_extension):
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try:
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if ".PDF" == original_file_extension.upper():
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return pdf_meta(tmp_file_path, original_file_name, original_file_extension)
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if ".EPUB" == original_file_extension.upper() and use_epub_meta == True:
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return epub.get_epub_info(tmp_file_path, original_file_name, original_file_extension)
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if ".FB2" == original_file_extension.upper() and use_fb2_meta == True:
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return fb2.get_fb2_info(tmp_file_path, original_file_name, original_file_extension)
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except Exception, e:
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logger.warning('cannot parse metadata, using default: %s', e)
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return default_meta(tmp_file_path, original_file_name, original_file_extension)
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def default_meta(tmp_file_path, original_file_name, original_file_extension):
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return uploader.BookMeta(
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file_path = tmp_file_path,
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extension = original_file_extension,
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title = original_file_name,
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author = "Unknown",
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cover = None,
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description = "",
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tags = "",
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series = "",
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series_id="")
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def pdf_meta(tmp_file_path, original_file_name, original_file_extension):
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if (use_pdf_meta):
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pdf = PdfFileReader(open(tmp_file_path, 'rb'))
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doc_info = pdf.getDocumentInfo()
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else:
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doc_info = None
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if (doc_info is not None):
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author = doc_info.author
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title = doc_info.title
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subject = doc_info.subject
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else:
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author = "Unknown"
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title = original_file_name
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subject = ""
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return uploader.BookMeta(
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file_path = tmp_file_path,
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extension = original_file_extension,
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title = title,
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author = author,
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cover = pdf_preview(tmp_file_path, original_file_name),
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description = subject,
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tags = "",
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series = "",
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series_id="")
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def pdf_preview(tmp_file_path, tmp_dir):
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if use_generic_pdf_cover:
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return None
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else:
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cover_file_name = os.path.splitext(tmp_file_path)[0] + ".cover.jpg"
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with Image(filename=tmp_file_path + "[0]", resolution=150) as img:
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img.compression_quality = 88
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img.save(filename=os.path.join(tmp_dir, cover_file_name))
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return cover_file_name
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