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https://github.com/janeczku/calibre-web
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6f7a240ce2
* Ensure file paths in uploads are non-empty, fix #183 * Fix AttributeError in process(), handle strings of spaces
108 lines
4.1 KiB
Python
108 lines
4.1 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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import zipfile
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from lxml import etree
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import os
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import uploader
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from iso639 import languages as isoLanguages
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def extractCover(zipFile, coverFile, coverpath, tmp_file_name):
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if coverFile is None:
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return None
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else:
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zipCoverPath = os.path.join(coverpath , coverFile).replace('\\','/')
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cf = zipFile.read(zipCoverPath)
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prefix = os.path.splitext(tmp_file_name)[0]
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tmp_cover_name = prefix + '.' + os.path.basename(zipCoverPath)
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image = open(tmp_cover_name, 'wb')
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image.write(cf)
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image.close()
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return tmp_cover_name
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def get_epub_info(tmp_file_path, original_file_name, original_file_extension):
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ns = {
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'n': 'urn:oasis:names:tc:opendocument:xmlns:container',
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'pkg': 'http://www.idpf.org/2007/opf',
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'dc': 'http://purl.org/dc/elements/1.1/'
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}
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epubZip = zipfile.ZipFile(tmp_file_path)
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txt = epubZip.read('META-INF/container.xml')
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tree = etree.fromstring(txt)
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cfname = tree.xpath('n:rootfiles/n:rootfile/@full-path', namespaces=ns)[0]
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cf = epubZip.read(cfname)
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tree = etree.fromstring(cf)
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coverpath = os.path.dirname(cfname)
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p = tree.xpath('/pkg:package/pkg:metadata', namespaces=ns)[0]
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epub_metadata = {}
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for s in ['title', 'description', 'creator', 'language']:
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tmp = p.xpath('dc:%s/text()' % s, namespaces=ns)
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if len(tmp) > 0:
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epub_metadata[s] = p.xpath('dc:%s/text()' % s, namespaces=ns)[0]
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else:
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epub_metadata[s] = "Unknown"
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if epub_metadata['description'] == "Unknown":
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description = tree.xpath("//*[local-name() = 'description']/text()")
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if len(description) > 0:
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epub_metadata['description'] = description
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else:
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epub_metadata['description'] = ""
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if epub_metadata['language'] == "Unknown":
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epub_metadata['language'] = ""
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else:
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lang = epub_metadata['language'].split('-', 1)[0].lower()
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if len(lang) == 2:
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epub_metadata['language'] = isoLanguages.get(part1=lang).name
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elif len(lang) == 3:
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epub_metadata['language'] = isoLanguages.get(part3=lang).name
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else:
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epub_metadata['language'] = ""
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coversection = tree.xpath("/pkg:package/pkg:manifest/pkg:item[@id='cover-image']/@href", namespaces=ns)
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coverfile = None
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if len(coversection) > 0:
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coverfile = extractCover(epubZip, coversection[0], coverpath, tmp_file_path)
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else:
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meta_cover = tree.xpath("/pkg:package/pkg:metadata/pkg:meta[@name='cover']/@content", namespaces=ns)
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if len(meta_cover) > 0:
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coversection = tree.xpath("/pkg:package/pkg:manifest/pkg:item[@id='"+meta_cover[0]+"']/@href", namespaces=ns)
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if len(coversection) > 0:
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filetype = coversection[0].rsplit('.', 1)[-1]
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if filetype == "xhtml" or filetype == "html": #if cover is (x)html format
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markup = epubZip.read(os.path.join(coverpath, coversection[0]))
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markupTree = etree.fromstring(markup)
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# no matter xhtml or html with no namespace
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imgsrc = markupTree.xpath("//*[local-name() = 'img']/@src")
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# imgsrc maybe startwith "../"" so fullpath join then relpath to cwd
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filename = os.path.relpath(os.path.join(os.path.dirname(os.path.join(coverpath, coversection[0])), imgsrc[0]))
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coverfile = extractCover(epubZip, filename, "", tmp_file_path)
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else:
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coverfile = extractCover(epubZip, coversection[0], coverpath, tmp_file_path)
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if not epub_metadata['title']:
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title = original_file_name
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else:
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title = epub_metadata['title']
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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.encode('utf-8').decode('utf-8'),
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author=epub_metadata['creator'].encode('utf-8').decode('utf-8'),
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cover=coverfile,
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description=epub_metadata['description'],
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tags="",
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series="",
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series_id="",
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languages=epub_metadata['language'])
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