Following a thread (some time ago) about getting the size of a file,
I've finally got around to doing a little test.
One of the contentions was that it seemed inefficient to have to
navigate to the folder containing the file, then get 'the detailed
files', and parse the result just to find out how big a file is.
I've just been brushing up on shell commands (I'm on OS X), and found
what would seem to be a viable alternative:
function getFileSize pFullPath
get shell("ls -l" && pFullPath
return word -5 of it
end getFileSize
This looks like it would be more efficient...
Currently, I have a library handler:
function getFileInfo pFileName
set the itemDelimiter to "/"
put put item 1 to -2 of pFileName into tFolderName
put put item -1 of pFileName into tFileName
put the directory into tOldFolder
set the directory to tFolderName
put urlDecode(the detailed files) into tFileList
get lineOffset(tFileName,tFileList)
put line it of tFileList into tInfo
put item 1 of tInfo into tFileInfo["fileName"]
put item 2 of tInfo into tFileInfo["fileSize"]
put item 3 of tInfo into tFileInfo["resourceSize"]
put item 4 of tInfo into tFileInfo["created"]
put item 5 of tInfo into tFileInfo["lastModified"]
put item 6 of tInfo into tFileInfo["lastAccessed"]
put item 7 of tInfo into tFileInfo["lastBackedUp"]
put item 8 of tInfo into tFileInfo["Owner"]
put item 9 of tInfo into tFileInfo["GroupOwner"]
put item 10 of tInfo into tFileInfo["Permissions"]
put item 11 of tInfo into tFileInfo["fileType"]
set the directory to tOldFolder
return tFileInfo
end getFileInfo
so to get the size of a file, I do this:
function getFileSize pFullPath
put getFileInfo(pFullPath) into tInfo
return tInfo["fileSize"
end getFileSize
So I set up a list of about 600 files, and used both versions of
'getFileSize()' in separate loops.
The transcript version took just over two seconds, the shell version
just under 40 seconds!
Of course, in many real applications, if you needed to get the sizes
of hundreds of files, you could probably do it much more efficiently
than this, since many, or all, might be in the same folder.
Anyway, I thought this was information worth sharing....
Best,
Mark
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