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Refactor container.open() so that the file paths can be used directly as well

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This commit is contained in:
Kovid Goyal 2015-11-27 14:55:57 +05:30
parent dc1bf3a36d
commit 3f8fcefd77
1 changed files with 11 additions and 7 deletions
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18
src/calibre/ebooks/oeb/polish/container.py
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@ -864,11 +864,8 @@ class Container(object): # {{{
path = self.name_to_abspath(name)
return os.path.getsize(path)
def open(self, name, mode='rb'):
''' Open the file pointed to by name for direct read/write. Note that
this will commit the file if it is dirtied and remove it from the parse
cache. You must finish with this file before accessing the parsed
version of it again, or bad things will happen. '''
def get_file_path_for_processing(self, name, allow_modification=True):
''' Similar to open() except that it returns a file path, instead of an open file object. '''
if name in self.dirtied:
self.commit_item(name)
self.parsed_cache.pop(name, False)
@ -877,13 +874,20 @@ class Container(object): # {{{
if not os.path.exists(base):
os.makedirs(base)
else:
if self.cloned and mode not in {'r', 'rb'} and os.path.exists(path) and nlinks_file(path) > 1:
if self.cloned and allow_modification and os.path.exists(path) and nlinks_file(path) > 1:
# Decouple this file from its links
temp = path + 'xxx'
shutil.copyfile(path, temp)
os.unlink(path)
os.rename(temp, path)
return open(path, mode)
return path
def open(self, name, mode='rb'):
''' Open the file pointed to by name for direct read/write. Note that
this will commit the file if it is dirtied and remove it from the parse
cache. You must finish with this file before accessing the parsed
version of it again, or bad things will happen. '''
return open(self.get_file_path_for_processing(name, mode not in {'r', 'rb'}), mode)
def commit(self, outpath=None, keep_parsed=False):
'''