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Re: File Extensions in Cache Questionaire

Subject: Re: File Extensions in Cache Questionaire
From: "John H Meyers"
Date: Sun, 16 Nov 2008 08:59:14 -0600
Newsgroups: opera.general

On Thu, 13 Nov 2008 22:25:42 -0600, Tim Altman asked:

> what doesn't work in 9.5+ that does work for you in 9.27-?

Speaking from a Windows-centric perspective:

Using Windows Explorer with cache -- sort by type, copy all of a type,
automatically open any or all in correct programs by just clicking,
(some also by "drag and drop,"
knowing immediately by sight or by type sorting which files to drag),
show all image thumbnails, "view as filmstrip,"
use all "Explorer context menu extensions"
which apply to each particular file type,
including knowing which previously used "Open with" set, etc.

"Windows Picture and Fax Viewer" -- can't proceed to open
all images in turn, skipping all non-images, in the exact
same order as the current sorting sequence of Windows Explorer,
can't do a slide show.

> Could enhancements to opera:cache work-around not having file
> extensions on cached files?  If so, what enhancements?

Other than undoing the original doing?

IMO you wouild never be able to put back all the functionality lost
 from Windows Explorer and other Windows programs which automatically
use the built-in "Associations" and/or "screen" all files
by the "types" known to Windows,
whose power of full _native_ Windows integration
is completely eviscerated by the excision of file extensions,
and now left to Opera to consider offering very little back,
still the "hard way," when the "easy [and instantaneous] way"
was always there to begin with.

> For instance, if the MIME type or file extension were listed
> in opera:cache, would that be a satisfactory solution?

Go down the list above, and see, for each issue,
how much of the above is accomplished by that --
some not at all, others only with tedious manual effort (including
need to still rename all individual files saved for subsequent use),
figuratively "bombing" Windows integration "back to the stone age."

Much better than spending effort at Opera to do just that little bit
would be using Nir Sofer's freeware "OperaCacheView,"
which is already so far ahead of anything that opera:cache could do,
if only it didn't have the exact same major problem for me
as opera:cache itself, which is:

I have once mentioned (and posted URLs of screen shots showing)
that neither my opera:cache nor old & new independent "Opera cache viewers"
see practically any files at all that are actually in my
correctly located cache folders (9.62 or even 9.27) -- for some reason,
each file "dcache4.url" is seen by Windows as remaining a
constant 20-byte length, with any Opera version, no matter what heap
of up-to the minute recent files actually populates the cache folder,
with a hex viewer showing nothing in "dcache4.url" but the "high water mark"
(last used or next file name), which only hints at the mysterious problem's
possible origin, without really explaining why "dcache4.url"
behaves so peculiarly on my system (XP Pro/SP2, Symantec Corp 9 AV),
apparently making the cache "invisible" to any program
which depends upon reading that ornery file from disk.

I can not even determine whether Opera itself is using all the files
which it caches, although the fact that some site issues are resolved
by clearing the entire cache suggests that it somehow still does;
perhaps "dcache4.url" is itself cached in Opera's RAM,
without being refected the same on disk, perhaps due
to some mechanism which may be at odds with my anti-malware?

It's hard to believe that some others aren't similarly affected,
although I didn't see anyone confirming what I showed.

At any rate, this kills "OperaCacheView" for me,
and I can't see opera:cache ever even coming close
(which wouldn't matter anyway, because even opera:cache
is also drawing a complete "blank" in 9.62 at this very moment,
even though it, running in parallel with this version,
has a cache folder brimming with real files on disk).

> How are you working around the removal of cache files [extensions?],
> i.e. are you using 9.5+ with a different work flow from 9.27?

I am working around 9.5+ by using 9.27 :)

Thanks for asking; hope you can find use for all the answers.

---

P.S. For "video capture" alone, try NirSoft's
"VideoCacheView" and "WebVideoCap,"
which work with current Opera anyway,
but solve none of the other issues:
http://www.nirsoft.net/utils/ -- Windows treasures
(also has "OperaCacheView," updated frequently :)

-- 

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