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Allow the add_file() method to modify the file name if not unique

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This commit is contained in:
Kovid Goyal 2016-06-14 12:59:29 +05:30
parent ec625be3b4
commit b0c9198a04
1 changed files with 18 additions and 8 deletions
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26
src/calibre/ebooks/oeb/polish/container.py
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@ -303,35 +303,45 @@ class Container(ContainerBase): # {{{
all_hrefs = {x.get('href') for x in self.opf_xpath('//opf:manifest/opf:item[@href]')}
return href in all_hrefs
def add_file(self, name, data, media_type=None, spine_index=None):
def add_file(self, name, data, media_type=None, spine_index=None, modify_name_if_needed=False):
''' Add a file to this container. Entries for the file are
automatically created in the OPF manifest and spine
(if the file is a text document) '''
if self.has_name(name):
raise ValueError('A file with the name %s already exists' % name)
if '..' in name:
raise ValueError('Names are not allowed to have .. in them')
href = self.name_to_href(name, self.opf_name)
all_hrefs = {x.get('href') for x in self.opf_xpath('//opf:manifest/opf:item[@href]')}
if href in all_hrefs:
raise ValueError('An item with the href %s already exists in the manifest' % href)
href = self.name_to_href(name, self.opf_name)
if self.has_name(name) or href in all_hrefs:
if not modify_name_if_needed:
raise ValueError(('A file with the name %s already exists' % name) if self.has_name(name) else
('An item with the href %s already exists in the manifest' % href))
base, ext = name.rpartition('.')[::2]
c = 0
while True:
c += 1
q = '%s-%d.%s' % (base, c, ext)
href = self.name_to_href(q, self.opf_name)
if not self.has_name(q) and href not in all_hrefs:
name = q
break
path = self.name_to_abspath(name)
base = os.path.dirname(path)
if not os.path.exists(base):
os.makedirs(base)
with open(path, 'wb') as f:
with lopen(path, 'wb') as f:
f.write(data)
mt = media_type or self.guess_type(name)
self.name_path_map[name] = path
self.mime_map[name] = mt
if self.ok_to_be_unmanifested(name):
return
return name
item_id = self.add_name_to_manifest(name)
if mt in OEB_DOCS:
manifest = self.opf_xpath('//opf:manifest')[0]
spine = self.opf_xpath('//opf:spine')[0]
si = manifest.makeelement(OPF('itemref'), idref=item_id)
self.insert_into_xml(spine, si, index=spine_index)
return name
def rename(self, current_name, new_name):
''' Renames a file from current_name to new_name. It automatically