I don't use Haskell on Windows, but if you go to
http://www.haskell.org/ghc/docs/latest/html/libraries/index.html
you'll find a package called System.Win32.File, which has these functions:
*getFileAttributes* ::
Stringhttp://www.haskell.org/ghc/docs/latest/html/libraries/base/Data-Char.html#t%...->
IOhttp://www.haskell.org/ghc/docs/latest/html/libraries/base/System-IO.html#t%...
FileAttributeOrFlaghttp://www.haskell.org/ghc/docs/latest/html/libraries/Win32/System-Win32-Fil...
*getFileInformationByHandle* ::
HANDLEhttp://www.haskell.org/ghc/docs/latest/html/libraries/Win32/System-Win32-Typ...->
IOhttp://www.haskell.org/ghc/docs/latest/html/libraries/base/System-IO.html#t%...
BY_HANDLE_FILE_INFORMATIONhttp://www.haskell.org/ghc/docs/latest/html/libraries/Win32/System-Win32-Fil...
The first has all sorts of attributes in it, the second has a field for
length. Maybe these will do what you want.
cheers,
Fraser.
On 6/21/07, Andrew Coppin
Andrea Rossato wrote:
On Thu, Jun 21, 2007 at 09:19:51PM +0100, Andrew Coppin wrote:
OK, a few questions...
1. Is there *any* way to determine how large a file is *without* opening it? The only library function I can find to do with file sizes is hFileSize; obviously this only works for files that you have permission to open!
System.Posix.Files fileSize
Does that *work* on Windoze?
Wait, hang on a sec... No, it doesn't. The module doesn't even exist.
(I was half-expecting it might work. GHC does currently run in a Unix emulator...)
2. Is there any way to discover Windoze-style "attributes" for files? (Read-only, archive, system, hidden, et al.)
The module before, if I understand correctlu.
No, AFAIK the archive attribute doesn't even exist on POSIX. It's a Windoze-specific thang.
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