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git-annex/Utility/FileSize.hs

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add getFileSize, which can get the real size of a large file on Windows Avoid using fileSize which maxes out at just 2 gb on Windows. Instead, use hFileSize, which doesn't have a bounded size. Fixes support for files > 2 gb on Windows. Note that the InodeCache code only needs to compare a file size, so it doesn't matter it the file size wraps. So it has been left as-is. This was necessary both to avoid invalidating existing inode caches, and because the code passed FileStatus around and would have become more expensive if it called getFileSize. This commit was sponsored by Christian Dietrich.
2015-01-20 20:58:48 +00:00
{- File size.
-
- License: BSD-2-clause
-}
{-# LANGUAGE CPP #-}
squelch tab warnings
2019-11-22 16:49:41 +00:00
{-# OPTIONS_GHC -fno-warn-tabs #-}
add getFileSize, which can get the real size of a large file on Windows Avoid using fileSize which maxes out at just 2 gb on Windows. Instead, use hFileSize, which doesn't have a bounded size. Fixes support for files > 2 gb on Windows. Note that the InodeCache code only needs to compare a file size, so it doesn't matter it the file size wraps. So it has been left as-is. This was necessary both to avoid invalidating existing inode caches, and because the code passed FileStatus around and would have become more expensive if it called getFileSize. This commit was sponsored by Christian Dietrich.
2015-01-20 20:58:48 +00:00
explict export lists Eliminated some dead code. In other cases, exported a currently unused function, since it was a logical part of the API. Of course this improves the API documentation. It may also sometimes let ghc optimize code better, since it can know a function is internal to a module. 364 modules still to go, according to git grep -E 'module [A-Za-z.]+ where'
2019-11-21 19:38:06 +00:00
module Utility.FileSize (
FileSize,
getFileSize,
getFileSize',
) where
add getFileSize, which can get the real size of a large file on Windows Avoid using fileSize which maxes out at just 2 gb on Windows. Instead, use hFileSize, which doesn't have a bounded size. Fixes support for files > 2 gb on Windows. Note that the InodeCache code only needs to compare a file size, so it doesn't matter it the file size wraps. So it has been left as-is. This was necessary both to avoid invalidating existing inode caches, and because the code passed FileStatus around and would have become more expensive if it called getFileSize. This commit was sponsored by Christian Dietrich.
2015-01-20 20:58:48 +00:00
import System.PosixCompat.Files
build fix
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#ifdef mingw32_HOST_OS
add getFileSize, which can get the real size of a large file on Windows Avoid using fileSize which maxes out at just 2 gb on Windows. Instead, use hFileSize, which doesn't have a bounded size. Fixes support for files > 2 gb on Windows. Note that the InodeCache code only needs to compare a file size, so it doesn't matter it the file size wraps. So it has been left as-is. This was necessary both to avoid invalidating existing inode caches, and because the code passed FileStatus around and would have become more expensive if it called getFileSize. This commit was sponsored by Christian Dietrich.
2015-01-20 20:58:48 +00:00
import Control.Exception (bracket)
import System.IO
build fix
2015-01-20 21:27:42 +00:00
#endif
add getFileSize, which can get the real size of a large file on Windows Avoid using fileSize which maxes out at just 2 gb on Windows. Instead, use hFileSize, which doesn't have a bounded size. Fixes support for files > 2 gb on Windows. Note that the InodeCache code only needs to compare a file size, so it doesn't matter it the file size wraps. So it has been left as-is. This was necessary both to avoid invalidating existing inode caches, and because the code passed FileStatus around and would have become more expensive if it called getFileSize. This commit was sponsored by Christian Dietrich.
2015-01-20 20:58:48 +00:00
matchexpression: New plumbing command to check if a preferred content expression matches some data.
2016-01-25 20:16:18 +00:00
type FileSize = Integer
add getFileSize, which can get the real size of a large file on Windows Avoid using fileSize which maxes out at just 2 gb on Windows. Instead, use hFileSize, which doesn't have a bounded size. Fixes support for files > 2 gb on Windows. Note that the InodeCache code only needs to compare a file size, so it doesn't matter it the file size wraps. So it has been left as-is. This was necessary both to avoid invalidating existing inode caches, and because the code passed FileStatus around and would have become more expensive if it called getFileSize. This commit was sponsored by Christian Dietrich.
2015-01-20 20:58:48 +00:00
{- Gets the size of a file.
-
- This is better than using fileSize, because on Windows that returns a
- FileOffset which maxes out at 2 gb.
- See https://github.com/jystic/unix-compat/issues/16
-}
matchexpression: New plumbing command to check if a preferred content expression matches some data.
2016-01-25 20:16:18 +00:00
getFileSize :: FilePath -> IO FileSize
add getFileSize, which can get the real size of a large file on Windows Avoid using fileSize which maxes out at just 2 gb on Windows. Instead, use hFileSize, which doesn't have a bounded size. Fixes support for files > 2 gb on Windows. Note that the InodeCache code only needs to compare a file size, so it doesn't matter it the file size wraps. So it has been left as-is. This was necessary both to avoid invalidating existing inode caches, and because the code passed FileStatus around and would have become more expensive if it called getFileSize. This commit was sponsored by Christian Dietrich.
2015-01-20 20:58:48 +00:00
#ifndef mingw32_HOST_OS
build fix
2015-01-20 21:27:42 +00:00
getFileSize f = fmap (fromIntegral . fileSize) (getFileStatus f)
add getFileSize, which can get the real size of a large file on Windows Avoid using fileSize which maxes out at just 2 gb on Windows. Instead, use hFileSize, which doesn't have a bounded size. Fixes support for files > 2 gb on Windows. Note that the InodeCache code only needs to compare a file size, so it doesn't matter it the file size wraps. So it has been left as-is. This was necessary both to avoid invalidating existing inode caches, and because the code passed FileStatus around and would have become more expensive if it called getFileSize. This commit was sponsored by Christian Dietrich.
2015-01-20 20:58:48 +00:00
#else
getFileSize f = bracket (openFile f ReadMode) hClose hFileSize
#endif
{- Gets the size of the file, when its FileStatus is already known. -}
matchexpression: New plumbing command to check if a preferred content expression matches some data.
2016-01-25 20:16:18 +00:00
getFileSize' :: FilePath -> FileStatus -> IO FileSize
add getFileSize, which can get the real size of a large file on Windows Avoid using fileSize which maxes out at just 2 gb on Windows. Instead, use hFileSize, which doesn't have a bounded size. Fixes support for files > 2 gb on Windows. Note that the InodeCache code only needs to compare a file size, so it doesn't matter it the file size wraps. So it has been left as-is. This was necessary both to avoid invalidating existing inode caches, and because the code passed FileStatus around and would have become more expensive if it called getFileSize. This commit was sponsored by Christian Dietrich.
2015-01-20 20:58:48 +00:00
#ifndef mingw32_HOST_OS
getFileSize' _ s = return $ fromIntegral $ fileSize s
#else
getFileSize' f _ = getFileSize f
#endif
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