[Okular-devel] md5 hash for annotation file name

[Pino Toscano]

Alle giovedì 11 settembre 2008, Markus Grabner ha scritto:
> Loading the file from a local hard disk takes considerably longer,

You are assuming whatever will load a document, will load it at once, while 
there are file formats that can be read by chunk (eg TIFF, PostScript).

> so I'm 
> not very much concerned about the hash computation time. However, the
> "readAll()" definitely has to be replaced by reading smaller chunks and
> processing them sequentially, that was just for the "proof of concept".

Reading the whole document by chunks or once at a single shot is basically the 
same.

> > so reading up to 1MB as much would be much better imho.
>
> If an annotation refers to a typo on the last page of a huge document, and
> this gets fixed, the same annotation would still be displayed for the
> corrected file if the correction appears after the portion of the file for
> which the hash value is computed (at least for uncompressed formats such as
> PostScript).

Or, more than that, two documents could be the very same up to some size.

-- 
Pino Toscano
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