Benoit Lefevre wrote:
After having a (long) look to the XPCOM documentation you pointed
out, i finally found the cache service i was looking for :
http://www.xulplanet.com/references/xpcomref/ifaces/nsICacheService.html
Unfortunately, the way to use it is still a bite fuzzy. I'm planing to
get a
file back from the cache according to a given URI.
But the only way to fetch something from the cache i can figure out is
thru this sequence of method call (starting from the previous
CacheService) :
http://www.xulplanet.com/references/xpcomref/ifaces/nsICacheService.html#method_createSession
http://www.xulplanet.com/references/xpcomref/ifaces/nsICacheSession.html
http://www.xulplanet.com/references/xpcomref/ifaces/nsICacheSession.html#method_openCacheEntry
What this method is returning give me almost a direct access to what i'm
looking for (the file representation of a jpg to access exif part of
it).
But that it is requesting a "char *key" parameter is puzzling me ...
My guess is that you can pass in a URL as that key, if you load the URL
about:cache
in Mozilla and then look at entries it shows something alike
Key: http://groups.google.com/intl/en_ALL/images/groups_res.gif
Data size: 26216 bytes
Fetch count: 1
Last modified: 12/24/04 14:54:33
Expires: 01/17/38 20:14:02
so the key is probably simply the URL the cache item has been loaded from.
--
Martin Honnen
http://JavaScript.FAQTs.com/
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