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Edit Book: Check Book: Add checks for links whose fragment (the part after the #) points to a location that does not exist

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Kovid Goyal 2014-06-13 11:08:28 +05:30
parent 161bf3bcda
commit 7e6691caa3
1 changed files with 44 additions and 3 deletions
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47
src/calibre/ebooks/oeb/polish/check/links.py
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@ -63,6 +63,18 @@ class BadDestinationType(BaseError):
link_elem.get('href'), link_dest)
self.bad_href = link_elem.get('href')
class BadDestinationFragment(BaseError):
level = WARN
def __init__(self, link_source, link_dest, link_elem, fragment):
BaseError.__init__(self, _('Link points to a location not present in the target file'), link_source, line=link_elem.sourceline)
self.bad_href = link_elem.get('href')
self.HELP = _('The link "{0}" points to a location <i>{1}</i> in the file {2} that does not exist.'
' You should either remove the location so that the link points to the top of the file,'
' or change the link to point to the correct location.').format(
self.bad_href, fragment, link_dest)
class FileLink(BadLink):
HELP = _('This link uses the file:// URL scheme. This does not work with many ebook readers.'
@ -183,14 +195,43 @@ def check_mimetypes(container):
a(MimetypeMismatch(container, name, mt, gt))
return errors
def check_link_destination(container, dest_map, name, href, a, errors):
tname = container.href_to_name(href, name)
if tname and tname in container.mime_map:
if container.mime_map[tname] not in OEB_DOCS:
errors.append(BadDestinationType(name, tname, a))
else:
root = container.parsed(tname)
if hasattr(root, 'xpath'):
if tname not in dest_map:
dest_map[tname] = set(root.xpath('//*/@id|//*/@name'))
purl = urlparse(href)
if purl.fragment and purl.fragment not in dest_map[tname]:
errors.append(BadDestinationFragment(name, tname, a, purl.fragment))
else:
errors.append(BadDestinationType(name, tname, a))
def check_link_destinations(container):
' Check destinations of links that point to HTML files '
errors = []
dest_map = {}
opf_type = guess_type('a.opf')
ncx_type = guess_type('a.ncx')
for name, mt in container.mime_map.iteritems():
if mt in OEB_DOCS:
for a in container.parsed(name).xpath('//*[local-name()="a" and @href]'):
tname = container.href_to_name(a.get('href'), name)
if tname and tname in container.mime_map and container.mime_map[tname] not in OEB_DOCS:
errors.append(BadDestinationType(name, tname, a))
href = a.get('href')
check_link_destination(container, dest_map, name, href, a, errors)
elif mt == opf_type:
for a in container.opf_xpath('//opf:reference[@href]'):
href = a.get('href')
check_link_destination(container, dest_map, name, href, a, errors)
elif mt == ncx_type:
for a in container.parsed(name).xpath('//*[local-name() = "content" and @src]'):
href = a.get('src')
check_link_destination(container, dest_map, name, href, a, errors)
return errors
def check_links(container):