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Edit Book: Check Book: Add a check for nav documents that contain no ToC in EPUB 3 books

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Kovid Goyal 2016-11-20 23:07:33 +05:30
parent 1145607df4
commit 3a22851b83
1 changed files with 17 additions and 2 deletions
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19
src/calibre/ebooks/oeb/polish/check/opf.py
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@ -10,7 +10,7 @@ from lxml import etree
from calibre import prepare_string_for_xml as xml from calibre import prepare_string_for_xml as xml
from calibre.ebooks.oeb.polish.check.base import BaseError, WARN from calibre.ebooks.oeb.polish.check.base import BaseError, WARN
from calibre.ebooks.oeb.polish.toc import find_existing_nav_toc from calibre.ebooks.oeb.polish.toc import find_existing_nav_toc, parse_nav
from calibre.ebooks.oeb.polish.utils import guess_type from calibre.ebooks.oeb.polish.utils import guess_type
from calibre.ebooks.oeb.base import OPF, OPF2_NS, DC, DC11_NS, XHTML_MIME from calibre.ebooks.oeb.base import OPF, OPF2_NS, DC, DC11_NS, XHTML_MIME
@ -119,6 +119,16 @@ class MissingNav(BaseError):
BaseError.__init__(self, _('Missing navigation document'), name, lnum) BaseError.__init__(self, _('Missing navigation document'), name, lnum)
class EmptyNav(BaseError):
HELP = _('The nav document for this book contains no table of contents, or an empty table of contents.'
' Use the Table of Contents tool to add a Table of Contents to this book.')
LEVEL = WARN
def __init__(self, name, lnum):
BaseError.__init__(self, _('Missing ToC in navigation document'), name, lnum)
class MissingHref(BaseError): class MissingHref(BaseError):
HELP = _('A file listed in the manifest is missing, you should either remove' HELP = _('A file listed in the manifest is missing, you should either remove'
@ -333,8 +343,13 @@ def check_opf(container):
errors.append(MissingNCXRef(container.opf_name, spine.sourceline, ncx_id)) errors.append(MissingNCXRef(container.opf_name, spine.sourceline, ncx_id))
if opf_version.major > 2: if opf_version.major > 2:
if find_existing_nav_toc(container) is None: existing_nav = find_existing_nav_toc(container)
if existing_nav is None:
errors.append(MissingNav(container.opf_name, 0)) errors.append(MissingNav(container.opf_name, 0))
else:
toc = parse_nav(container, existing_nav)
if len(toc) == 0:
errors.append(EmptyNav(existing_nav, 0))
covers = container.opf_xpath('/opf:package/opf:metadata/opf:meta[@name="cover"]') covers = container.opf_xpath('/opf:package/opf:metadata/opf:meta[@name="cover"]')
if len(covers) > 0: if len(covers) > 0: