On 5/17/13 8:11 AM, Trygve Inda wrote:
One issue is that when opening my document (the package may contain several
thousand files) I only really need to load one file (the plist) and then
there rest of the files are images that are only read as needed... So I will
need to have my doc keep a reference to the package location to read these
images outside of the normal save/read methods.
In looking at the docs:
- (BOOL)readFromURL:(NSURL *)absoluteURL ofType:(NSString *)typeName
error:(NSError **)outError
it says " Sets the contents of this document by reading from a file or file
package, of a specified type, located by a URL."
So this seems to work for document packages too??
Yes, sure, but:
An alternative is to hold on to the packages sub-wrappers and read their content
on demand only. No one forces you to load the wrappers' contents at the time
your document is opened, so you would only actually load your plist and keep the
other wrappers around.
That also gives you to possibility to reuse the wrappers when you need to save
your document. When you reuse an "old" wrapper (say because the content of the
file the wrapper represents didn't change), it dramatically shortens the time
needed to save the document - if you have many files to save and/or if they are
big. That's because the content won't be written twice, the system just creates
a hard link to the original file on the disk.
Regards
Markus
--
__________________________________________
Markus Spoettl
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