887 lines
112 KiB
HTML
887 lines
112 KiB
HTML
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<!-- Generated by HsColour, http://code.haskell.org/~malcolm/hscolour/ -->
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<title>src/HPath/IO.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>-- |</span>
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<a name="line-2"></a><span class='hs-comment'>-- Module : HPath.IO</span>
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<a name="line-3"></a><span class='hs-comment'>-- Copyright : © 2016 Julian Ospald</span>
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<a name="line-4"></a><span class='hs-comment'>-- License : BSD3</span>
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<a name="line-5"></a><span class='hs-comment'>--</span>
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<a name="line-6"></a><span class='hs-comment'>-- Maintainer : Julian Ospald <hasufell@posteo.de></span>
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<a name="line-7"></a><span class='hs-comment'>-- Stability : experimental</span>
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<a name="line-8"></a><span class='hs-comment'>-- Portability : portable</span>
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<a name="line-9"></a><span class='hs-comment'>--</span>
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<a name="line-10"></a><span class='hs-comment'>-- This module provides high-level IO related file operations like</span>
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<a name="line-11"></a><span class='hs-comment'>-- copy, delete, move and so on. It only operates on /Path Abs/ which</span>
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<a name="line-12"></a><span class='hs-comment'>-- guarantees us well-typed paths which are absolute.</span>
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<a name="line-13"></a><span class='hs-comment'>--</span>
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<a name="line-14"></a><span class='hs-comment'>-- Some functions are just path-safe wrappers around</span>
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<a name="line-15"></a><span class='hs-comment'>-- unix functions, others have stricter exception handling</span>
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<a name="line-16"></a><span class='hs-comment'>-- and some implement functionality that doesn't have a unix</span>
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<a name="line-17"></a><span class='hs-comment'>-- counterpart (like `copyDirRecursive`).</span>
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<a name="line-18"></a><span class='hs-comment'>--</span>
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<a name="line-19"></a><span class='hs-comment'>-- Some of these operations are due to their nature __not atomic__, which</span>
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<a name="line-20"></a><span class='hs-comment'>-- means they may do multiple syscalls which form one context. Some</span>
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<a name="line-21"></a><span class='hs-comment'>-- of them also have to examine the filetypes explicitly before the</span>
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<a name="line-22"></a><span class='hs-comment'>-- syscalls, so a reasonable decision can be made. That means</span>
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<a name="line-23"></a><span class='hs-comment'>-- the result is undefined if another process changes that context</span>
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<a name="line-24"></a><span class='hs-comment'>-- while the non-atomic operation is still happening. However, where</span>
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<a name="line-25"></a><span class='hs-comment'>-- possible, as few syscalls as possible are used and the underlying</span>
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<a name="line-26"></a><span class='hs-comment'>-- exception handling is kept.</span>
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<a name="line-27"></a><span class='hs-comment'>--</span>
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<a name="line-28"></a><span class='hs-comment'>-- Note: `BlockDevice`, `CharacterDevice`, `NamedPipe` and `Socket`</span>
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<a name="line-29"></a><span class='hs-comment'>-- are ignored by some of the more high-level functions (like `easyCopy`).</span>
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<a name="line-30"></a><span class='hs-comment'>-- For other functions (like `copyFile`), the behavior on these file types is</span>
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<a name="line-31"></a><span class='hs-comment'>-- unreliable/unsafe. Check the documentation of those functions for details.</span>
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<a name="line-32"></a>
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<a name="line-33"></a><span class='hs-comment'>{-# LANGUAGE PackageImports #-}</span>
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<a name="line-34"></a><span class='hs-comment'>{-# LANGUAGE OverloadedStrings #-}</span>
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<a name="line-35"></a>
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<a name="line-36"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>HPath</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span>
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<a name="line-37"></a> <span class='hs-layout'>(</span>
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<a name="line-38"></a> <span class='hs-comment'>-- * Types</span>
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<a name="line-39"></a> <span class='hs-conid'>FileType</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
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<a name="line-40"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>RecursiveMode</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
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<a name="line-41"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>CopyMode</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
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<a name="line-42"></a> <span class='hs-comment'>-- * File copying</span>
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<a name="line-43"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>copyDirRecursive</span>
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<a name="line-44"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>recreateSymlink</span>
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<a name="line-45"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>copyFile</span>
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<a name="line-46"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>easyCopy</span>
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<a name="line-47"></a> <span class='hs-comment'>-- * File deletion</span>
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<a name="line-48"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>deleteFile</span>
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<a name="line-49"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>deleteDir</span>
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<a name="line-50"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>deleteDirRecursive</span>
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<a name="line-51"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>easyDelete</span>
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<a name="line-52"></a> <span class='hs-comment'>-- * File opening</span>
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<a name="line-53"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>openFile</span>
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<a name="line-54"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>executeFile</span>
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<a name="line-55"></a> <span class='hs-comment'>-- * File creation</span>
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<a name="line-56"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>createRegularFile</span>
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<a name="line-57"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>createDir</span>
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<a name="line-58"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>createSymlink</span>
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<a name="line-59"></a> <span class='hs-comment'>-- * File renaming/moving</span>
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<a name="line-60"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>renameFile</span>
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<a name="line-61"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>moveFile</span>
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<a name="line-62"></a> <span class='hs-comment'>-- * File permissions</span>
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<a name="line-63"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>newFilePerms</span>
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<a name="line-64"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>newDirPerms</span>
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<a name="line-65"></a> <span class='hs-comment'>-- * Directory reading</span>
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<a name="line-66"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getDirsFiles</span>
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<a name="line-67"></a> <span class='hs-comment'>-- * Filetype operations</span>
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<a name="line-68"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getFileType</span>
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<a name="line-69"></a> <span class='hs-comment'>-- * Others</span>
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<a name="line-70"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>canonicalizePath</span>
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<a name="line-71"></a> <span class='hs-layout'>)</span>
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<a name="line-72"></a> <span class='hs-keyword'>where</span>
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<a name="line-73"></a>
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<a name="line-74"></a>
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<a name="line-75"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span>
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<a name="line-76"></a> <span class='hs-layout'>(</span>
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<a name="line-77"></a> <span class='hs-layout'>(</span><span class='hs-varop'><$></span><span class='hs-layout'>)</span>
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<a name="line-78"></a> <span class='hs-layout'>)</span>
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<a name="line-79"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Exception</span>
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<a name="line-80"></a> <span class='hs-layout'>(</span>
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<a name="line-81"></a> <span class='hs-conid'>IOException</span>
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<a name="line-82"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>bracket</span>
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<a name="line-83"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>throwIO</span>
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<a name="line-84"></a> <span class='hs-layout'>)</span>
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<a name="line-85"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span>
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<a name="line-86"></a> <span class='hs-layout'>(</span>
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<a name="line-87"></a> <span class='hs-varid'>unless</span>
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<a name="line-88"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>void</span>
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<a name="line-89"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>when</span>
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<a name="line-90"></a> <span class='hs-layout'>)</span>
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<a name="line-91"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
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<a name="line-92"></a> <span class='hs-layout'>(</span>
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<a name="line-93"></a> <span class='hs-conid'>ByteString</span>
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<a name="line-94"></a> <span class='hs-layout'>)</span>
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<a name="line-95"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Foldable</span>
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<a name="line-96"></a> <span class='hs-layout'>(</span>
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<a name="line-97"></a> <span class='hs-varid'>for_</span>
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<a name="line-98"></a> <span class='hs-layout'>)</span>
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<a name="line-99"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>IORef</span>
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<a name="line-100"></a> <span class='hs-layout'>(</span>
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<a name="line-101"></a> <span class='hs-conid'>IORef</span>
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<a name="line-102"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>modifyIORef</span>
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<a name="line-103"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>newIORef</span>
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<a name="line-104"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>readIORef</span>
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<a name="line-105"></a> <span class='hs-layout'>)</span>
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<a name="line-106"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span>
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<a name="line-107"></a> <span class='hs-layout'>(</span>
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<a name="line-108"></a> <span class='hs-varid'>catMaybes</span>
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<a name="line-109"></a> <span class='hs-layout'>)</span>
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<a name="line-110"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Word</span>
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<a name="line-111"></a> <span class='hs-layout'>(</span>
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<a name="line-112"></a> <span class='hs-conid'>Word8</span>
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<a name="line-113"></a> <span class='hs-layout'>)</span>
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<a name="line-114"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>Error</span>
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<a name="line-115"></a> <span class='hs-layout'>(</span>
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<a name="line-116"></a> <span class='hs-varid'>eEXIST</span>
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<a name="line-117"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>eINVAL</span>
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<a name="line-118"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>eNOSYS</span>
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<a name="line-119"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>eNOTEMPTY</span>
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<a name="line-120"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>eXDEV</span>
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<a name="line-121"></a> <span class='hs-layout'>)</span>
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<a name="line-122"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span>
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<a name="line-123"></a> <span class='hs-layout'>(</span>
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<a name="line-124"></a> <span class='hs-conid'>CSize</span>
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<a name="line-125"></a> <span class='hs-layout'>)</span>
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<a name="line-126"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Marshal</span><span class='hs-varop'>.</span><span class='hs-conid'>Alloc</span>
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<a name="line-127"></a> <span class='hs-layout'>(</span>
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<a name="line-128"></a> <span class='hs-varid'>allocaBytes</span>
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<a name="line-129"></a> <span class='hs-layout'>)</span>
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<a name="line-130"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Ptr</span>
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<a name="line-131"></a> <span class='hs-layout'>(</span>
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<a name="line-132"></a> <span class='hs-conid'>Ptr</span>
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<a name="line-133"></a> <span class='hs-layout'>)</span>
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<a name="line-134"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Exception</span>
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<a name="line-135"></a> <span class='hs-layout'>(</span>
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<a name="line-136"></a> <span class='hs-conid'>IOErrorType</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
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<a name="line-137"></a> <span class='hs-layout'>)</span>
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<a name="line-138"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>HPath</span>
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<a name="line-139"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>HPath</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span>
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<a name="line-140"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>HPath</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Errors</span>
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<a name="line-141"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Prelude</span> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span><span class='hs-varid'>readFile</span><span class='hs-layout'>)</span>
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<a name="line-142"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Error</span>
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<a name="line-143"></a> <span class='hs-layout'>(</span>
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<a name="line-144"></a> <span class='hs-varid'>catchIOError</span>
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<a name="line-145"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>ioeGetErrorType</span>
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<a name="line-146"></a> <span class='hs-layout'>)</span>
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<a name="line-147"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Linux</span><span class='hs-varop'>.</span><span class='hs-conid'>Sendfile</span>
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<a name="line-148"></a> <span class='hs-layout'>(</span>
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<a name="line-149"></a> <span class='hs-varid'>sendfileFd</span>
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<a name="line-150"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>FileRange</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
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<a name="line-151"></a> <span class='hs-layout'>)</span>
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<a name="line-152"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Posix</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
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<a name="line-153"></a> <span class='hs-layout'>(</span>
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<a name="line-154"></a> <span class='hs-varid'>exclusive</span>
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<a name="line-155"></a> <span class='hs-layout'>)</span>
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<a name="line-156"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Posix</span><span class='hs-varop'>.</span><span class='hs-conid'>Directory</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
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<a name="line-157"></a> <span class='hs-layout'>(</span>
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<a name="line-158"></a> <span class='hs-varid'>createDirectory</span>
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<a name="line-159"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>removeDirectory</span>
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<a name="line-160"></a> <span class='hs-layout'>)</span>
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<a name="line-161"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Posix</span><span class='hs-varop'>.</span><span class='hs-conid'>Directory</span><span class='hs-varop'>.</span><span class='hs-conid'>Traversals</span>
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<a name="line-162"></a> <span class='hs-layout'>(</span>
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<a name="line-163"></a> <span class='hs-varid'>getDirectoryContents'</span>
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<a name="line-164"></a> <span class='hs-layout'>)</span>
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<a name="line-165"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Posix</span><span class='hs-varop'>.</span><span class='hs-conid'>Files</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
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<a name="line-166"></a> <span class='hs-layout'>(</span>
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<a name="line-167"></a> <span class='hs-varid'>createSymbolicLink</span>
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<a name="line-168"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>fileMode</span>
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<a name="line-169"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getFdStatus</span>
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<a name="line-170"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>groupExecuteMode</span>
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<a name="line-171"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>groupReadMode</span>
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<a name="line-172"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>groupWriteMode</span>
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<a name="line-173"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>otherExecuteMode</span>
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<a name="line-174"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>otherReadMode</span>
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<a name="line-175"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>otherWriteMode</span>
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<a name="line-176"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>ownerModes</span>
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<a name="line-177"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>ownerReadMode</span>
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<a name="line-178"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>ownerWriteMode</span>
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<a name="line-179"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>readSymbolicLink</span>
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<a name="line-180"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>removeLink</span>
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<a name="line-181"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>rename</span>
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<a name="line-182"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>setFileMode</span>
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<a name="line-183"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>unionFileModes</span>
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<a name="line-184"></a> <span class='hs-layout'>)</span>
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<a name="line-185"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Posix</span><span class='hs-varop'>.</span><span class='hs-conid'>Files</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>PF</span>
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<a name="line-186"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-str'>"unix"</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Posix</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>SPI</span>
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<a name="line-187"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-str'>"unix-bytestring"</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Posix</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>SPB</span>
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<a name="line-188"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Posix</span><span class='hs-varop'>.</span><span class='hs-conid'>FD</span>
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<a name="line-189"></a> <span class='hs-layout'>(</span>
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<a name="line-190"></a> <span class='hs-varid'>openFd</span>
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<a name="line-191"></a> <span class='hs-layout'>)</span>
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<a name="line-192"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Posix</span><span class='hs-varop'>.</span><span class='hs-conid'>Directory</span><span class='hs-varop'>.</span><span class='hs-conid'>Traversals</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>SPDT</span>
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<a name="line-193"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Posix</span><span class='hs-varop'>.</span><span class='hs-conid'>Directory</span><span class='hs-varop'>.</span><span class='hs-conid'>Foreign</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>SPDF</span>
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<a name="line-194"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Posix</span><span class='hs-varop'>.</span><span class='hs-conid'>Process</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>SPP</span>
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<a name="line-195"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Posix</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span>
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<a name="line-196"></a> <span class='hs-layout'>(</span>
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<a name="line-197"></a> <span class='hs-conid'>FileMode</span>
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<a name="line-198"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>ProcessID</span>
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<a name="line-199"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Fd</span>
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<a name="line-200"></a> <span class='hs-layout'>)</span>
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<a name="line-201"></a>
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<a name="line-202"></a>
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<a name="line-203"></a>
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<a name="line-204"></a>
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<a name="line-205"></a>
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<a name="line-206"></a> <span class='hs-comment'>-------------</span>
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<a name="line-207"></a> <span class='hs-comment'>--[ Types ]--</span>
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<a name="line-208"></a> <span class='hs-comment'>-------------</span>
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<a name="line-209"></a>
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<a name="line-210"></a>
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<a name="line-211"></a><a name="FileType"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>FileType</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Directory</span>
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<a name="line-212"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>RegularFile</span>
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<a name="line-213"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>SymbolicLink</span>
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<a name="line-214"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BlockDevice</span>
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<a name="line-215"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>CharacterDevice</span>
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<a name="line-216"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>NamedPipe</span>
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<a name="line-217"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Socket</span>
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<a name="line-218"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span><span class='hs-layout'>)</span>
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<a name="line-219"></a>
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<a name="line-220"></a>
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<a name="line-221"></a>
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<a name="line-222"></a><a name="RecursiveMode"></a><span class='hs-comment'>-- |The mode for any recursive operation.</span>
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<a name="line-223"></a><a name="RecursiveMode"></a><span class='hs-comment'>--</span>
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<a name="line-224"></a><a name="RecursiveMode"></a><span class='hs-comment'>-- On `FailEarly` the whole operation fails immediately if any of the</span>
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<a name="line-225"></a><a name="RecursiveMode"></a><span class='hs-comment'>-- recursive sub-operations fail, which is sort of the default</span>
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<a name="line-226"></a><a name="RecursiveMode"></a><span class='hs-comment'>-- for IO operations.</span>
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<a name="line-227"></a><a name="RecursiveMode"></a><span class='hs-comment'>--</span>
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<a name="line-228"></a><a name="RecursiveMode"></a><span class='hs-comment'>-- On `CollectFailures` skips and collects the failed sub-operation</span>
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<a name="line-229"></a><a name="RecursiveMode"></a><span class='hs-comment'>-- and keeps on</span>
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<a name="line-230"></a><a name="RecursiveMode"></a><span class='hs-comment'>-- recursing. At the end an exception describing the collected</span>
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<a name="line-231"></a><a name="RecursiveMode"></a><span class='hs-comment'>-- failures will still be raised.</span>
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<a name="line-232"></a><a name="RecursiveMode"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>RecursiveMode</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>FailEarly</span>
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<a name="line-233"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>CollectFailures</span>
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<a name="line-234"></a>
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<a name="line-235"></a>
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<a name="line-236"></a><a name="CopyMode"></a><span class='hs-comment'>-- |The mode for copy and file moves.</span>
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<a name="line-237"></a><a name="CopyMode"></a><span class='hs-comment'>-- Overwrite mode is usually not very well defined, but is a convenience</span>
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<a name="line-238"></a><a name="CopyMode"></a><span class='hs-comment'>-- shortcut.</span>
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<a name="line-239"></a><a name="CopyMode"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>CopyMode</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Strict</span> <span class='hs-comment'>-- ^ fail if any target exists</span>
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<a name="line-240"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Overwrite</span> <span class='hs-comment'>-- ^ overwrite targets</span>
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<a name="line-241"></a>
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<a name="line-242"></a>
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<a name="line-243"></a>
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<a name="line-244"></a>
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<a name="line-245"></a> <span class='hs-comment'>--------------------</span>
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<a name="line-246"></a> <span class='hs-comment'>--[ File Copying ]--</span>
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<a name="line-247"></a> <span class='hs-comment'>--------------------</span>
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<a name="line-248"></a>
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<a name="line-249"></a>
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<a name="line-250"></a>
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<a name="line-251"></a><a name="copyDirRecursive"></a><span class='hs-comment'>-- |Copies a directory recursively to the given destination.</span>
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<a name="line-252"></a><span class='hs-comment'>-- Does not follow symbolic links.</span>
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<a name="line-253"></a><span class='hs-comment'>--</span>
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<a name="line-254"></a><span class='hs-comment'>-- For directory contents, this has the same behavior as `easyCopy`</span>
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<a name="line-255"></a><span class='hs-comment'>-- and thus will ignore any file type that is not `RegularFile`,</span>
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<a name="line-256"></a><span class='hs-comment'>-- `SymbolicLink` or `Directory`.</span>
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<a name="line-257"></a><span class='hs-comment'>--</span>
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<a name="line-258"></a><span class='hs-comment'>-- For `Overwrite` mode this does not prune destination directory contents,</span>
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<a name="line-259"></a><span class='hs-comment'>-- so the destination might contain more files than the source after</span>
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<a name="line-260"></a><span class='hs-comment'>-- the operation has completed.</span>
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<a name="line-261"></a><span class='hs-comment'>--</span>
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<a name="line-262"></a><span class='hs-comment'>-- Safety/reliability concerns:</span>
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<a name="line-263"></a><span class='hs-comment'>--</span>
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<a name="line-264"></a><span class='hs-comment'>-- * not atomic</span>
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<a name="line-265"></a><span class='hs-comment'>-- * examines filetypes explicitly</span>
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<a name="line-266"></a><span class='hs-comment'>-- * an explicit check `throwDestinationInSource` is carried out for the</span>
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<a name="line-267"></a><span class='hs-comment'>-- top directory for basic sanity, because otherwise we might end up</span>
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<a name="line-268"></a><span class='hs-comment'>-- with an infinite copy loop... however, this operation is not</span>
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<a name="line-269"></a><span class='hs-comment'>-- carried out recursively (because it's slow)</span>
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<a name="line-270"></a><span class='hs-comment'>--</span>
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<a name="line-271"></a><span class='hs-comment'>-- Throws:</span>
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<a name="line-272"></a><span class='hs-comment'>--</span>
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<a name="line-273"></a><span class='hs-comment'>-- - `NoSuchThing` if source directory does not exist</span>
|
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<a name="line-274"></a><span class='hs-comment'>-- - `PermissionDenied` if output directory is not writable</span>
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<a name="line-275"></a><span class='hs-comment'>-- - `PermissionDenied` if source directory can't be opened</span>
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<a name="line-276"></a><span class='hs-comment'>-- - `InvalidArgument` if source directory is wrong type (symlink)</span>
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<a name="line-277"></a><span class='hs-comment'>-- - `InvalidArgument` if source directory is wrong type (regular file)</span>
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<a name="line-278"></a><span class='hs-comment'>-- - `SameFile` if source and destination are the same file (`HPathIOException`)</span>
|
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<a name="line-279"></a><span class='hs-comment'>-- - `DestinationInSource` if destination is contained in source (`HPathIOException`)</span>
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<a name="line-280"></a><span class='hs-comment'>-- - `RecursiveFailure` if any sub-operation failed (for `CollectFailures` RecursiveMode only)</span>
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<a name="line-281"></a><span class='hs-comment'>--</span>
|
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<a name="line-282"></a><span class='hs-comment'>-- Throws in `Strict` CopyMode only:</span>
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<a name="line-283"></a><span class='hs-comment'>--</span>
|
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<a name="line-284"></a><span class='hs-comment'>-- - `AlreadyExists` if destination already exists</span>
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<a name="line-285"></a><span class='hs-comment'>--</span>
|
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<a name="line-286"></a><span class='hs-comment'>-- Throws in `CollectFailures` RecursiveMode only:</span>
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<a name="line-287"></a><span class='hs-comment'>--</span>
|
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<a name="line-288"></a><span class='hs-comment'>-- - `AlreadyExists` if destination already exists</span>
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<a name="line-289"></a><span class='hs-definition'>copyDirRecursive</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-comment'>-- ^ source dir</span>
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<a name="line-290"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-comment'>-- ^ full destination</span>
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<a name="line-291"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CopyMode</span>
|
|
<a name="line-292"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>RecursiveMode</span>
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<a name="line-293"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
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<a name="line-294"></a><span class='hs-definition'>copyDirRecursive</span> <span class='hs-varid'>fromp</span> <span class='hs-varid'>destdirp</span> <span class='hs-varid'>cm</span> <span class='hs-varid'>rm</span>
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<a name="line-295"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
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<a name="line-296"></a> <span class='hs-varid'>ce</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newIORef</span> <span class='hs-conid'>[]</span>
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|
<a name="line-297"></a> <span class='hs-comment'>-- for performance, sanity checks are only done for the top dir</span>
|
|
<a name="line-298"></a> <span class='hs-varid'>throwSameFile</span> <span class='hs-varid'>fromp</span> <span class='hs-varid'>destdirp</span>
|
|
<a name="line-299"></a> <span class='hs-varid'>throwDestinationInSource</span> <span class='hs-varid'>fromp</span> <span class='hs-varid'>destdirp</span>
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<a name="line-300"></a> <span class='hs-varid'>go</span> <span class='hs-varid'>ce</span> <span class='hs-varid'>fromp</span> <span class='hs-varid'>destdirp</span>
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<a name="line-301"></a> <span class='hs-varid'>collectedExceptions</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readIORef</span> <span class='hs-varid'>ce</span>
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<a name="line-302"></a> <span class='hs-varid'>unless</span> <span class='hs-layout'>(</span><span class='hs-varid'>null</span> <span class='hs-varid'>collectedExceptions</span><span class='hs-layout'>)</span>
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<a name="line-303"></a> <span class='hs-layout'>(</span><span class='hs-varid'>throwIO</span> <span class='hs-varop'>.</span> <span class='hs-conid'>RecursiveFailure</span> <span class='hs-varop'>$</span> <span class='hs-varid'>collectedExceptions</span><span class='hs-layout'>)</span>
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<a name="line-304"></a> <span class='hs-keyword'>where</span>
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<a name="line-305"></a> <span class='hs-varid'>go</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IORef</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>IOException</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
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<a name="line-306"></a> <span class='hs-varid'>go</span> <span class='hs-varid'>ce</span> <span class='hs-varid'>fromp'</span> <span class='hs-varid'>destdirp'</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
|
|
<a name="line-307"></a>
|
|
<a name="line-308"></a> <span class='hs-comment'>-- order is important here, so we don't get empty directories</span>
|
|
<a name="line-309"></a> <span class='hs-comment'>-- on failure</span>
|
|
<a name="line-310"></a> <span class='hs-varid'>contents</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>handleIOE</span> <span class='hs-varid'>ce</span> <span class='hs-conid'>[]</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
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|
<a name="line-311"></a> <span class='hs-varid'>contents</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getDirsFiles</span> <span class='hs-varid'>fromp'</span>
|
|
<a name="line-312"></a>
|
|
<a name="line-313"></a> <span class='hs-varid'>fmode'</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>PF</span><span class='hs-varop'>.</span><span class='hs-varid'>fileMode</span> <span class='hs-varop'><$></span> <span class='hs-conid'>PF</span><span class='hs-varop'>.</span><span class='hs-varid'>getSymbolicLinkStatus</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromAbs</span> <span class='hs-varid'>fromp'</span><span class='hs-layout'>)</span>
|
|
<a name="line-314"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>cm</span> <span class='hs-keyword'>of</span>
|
|
<a name="line-315"></a> <span class='hs-conid'>Strict</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>createDirectory</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromAbs</span> <span class='hs-varid'>destdirp'</span><span class='hs-layout'>)</span> <span class='hs-varid'>fmode'</span>
|
|
<a name="line-316"></a> <span class='hs-conid'>Overwrite</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>catchIOError</span> <span class='hs-layout'>(</span><span class='hs-varid'>createDirectory</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromAbs</span> <span class='hs-varid'>destdirp'</span><span class='hs-layout'>)</span> <span class='hs-varid'>fmode'</span><span class='hs-layout'>)</span>
|
|
<a name="line-317"></a> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span>
|
|
<a name="line-318"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>ioeGetErrorType</span> <span class='hs-varid'>e</span> <span class='hs-keyword'>of</span>
|
|
<a name="line-319"></a> <span class='hs-conid'>AlreadyExists</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>setFileMode</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromAbs</span> <span class='hs-varid'>destdirp'</span><span class='hs-layout'>)</span>
|
|
<a name="line-320"></a> <span class='hs-varid'>fmode'</span>
|
|
<a name="line-321"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>ioError</span> <span class='hs-varid'>e</span>
|
|
<a name="line-322"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>contents</span>
|
|
<a name="line-323"></a>
|
|
<a name="line-324"></a> <span class='hs-comment'>-- we can't use `easyCopy` here, because we want to call `go`</span>
|
|
<a name="line-325"></a> <span class='hs-comment'>-- recursively to skip the top-level sanity checks</span>
|
|
<a name="line-326"></a> <span class='hs-varid'>for_</span> <span class='hs-varid'>contents</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>f</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
|
|
<a name="line-327"></a> <span class='hs-varid'>ftype</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getFileType</span> <span class='hs-varid'>f</span>
|
|
<a name="line-328"></a> <span class='hs-varid'>newdest</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-varid'>destdirp'</span> <span class='hs-varop'></></span><span class='hs-layout'>)</span> <span class='hs-varop'><$></span> <span class='hs-varid'>basename</span> <span class='hs-varid'>f</span>
|
|
<a name="line-329"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>ftype</span> <span class='hs-keyword'>of</span>
|
|
<a name="line-330"></a> <span class='hs-conid'>SymbolicLink</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>handleIOE</span> <span class='hs-varid'>ce</span> <span class='hs-conid'>()</span>
|
|
<a name="line-331"></a> <span class='hs-varop'>$</span> <span class='hs-varid'>recreateSymlink</span> <span class='hs-varid'>f</span> <span class='hs-varid'>newdest</span> <span class='hs-varid'>cm</span>
|
|
<a name="line-332"></a> <span class='hs-conid'>Directory</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>go</span> <span class='hs-varid'>ce</span> <span class='hs-varid'>f</span> <span class='hs-varid'>newdest</span>
|
|
<a name="line-333"></a> <span class='hs-conid'>RegularFile</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>handleIOE</span> <span class='hs-varid'>ce</span> <span class='hs-conid'>()</span> <span class='hs-varop'>$</span> <span class='hs-varid'>copyFile</span> <span class='hs-varid'>f</span> <span class='hs-varid'>newdest</span> <span class='hs-varid'>cm</span>
|
|
<a name="line-334"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
|
|
<a name="line-335"></a> <span class='hs-varid'>handleIOE</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IORef</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>IOException</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span>
|
|
<a name="line-336"></a> <span class='hs-varid'>handleIOE</span> <span class='hs-varid'>ce</span> <span class='hs-varid'>def</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>rm</span> <span class='hs-keyword'>of</span>
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<a name="line-337"></a> <span class='hs-conid'>FailEarly</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>handleIOError</span> <span class='hs-varid'>throwIO</span>
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|
<a name="line-338"></a> <span class='hs-conid'>CollectFailures</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>handleIOError</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>modifyIORef</span> <span class='hs-varid'>ce</span> <span class='hs-layout'>(</span><span class='hs-varid'>e</span><span class='hs-conop'>:</span><span class='hs-layout'>)</span>
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<a name="line-339"></a> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-varid'>def</span><span class='hs-layout'>)</span>
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<a name="line-340"></a>
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<a name="line-341"></a>
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<a name="line-342"></a><a name="recreateSymlink"></a><span class='hs-comment'>-- |Recreate a symlink.</span>
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<a name="line-343"></a><span class='hs-comment'>--</span>
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<a name="line-344"></a><span class='hs-comment'>-- In `Overwrite` mode only files and empty directories are deleted.</span>
|
|
<a name="line-345"></a><span class='hs-comment'>--</span>
|
|
<a name="line-346"></a><span class='hs-comment'>-- Safety/reliability concerns:</span>
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|
<a name="line-347"></a><span class='hs-comment'>--</span>
|
|
<a name="line-348"></a><span class='hs-comment'>-- * `Overwrite` mode is inherently non-atomic</span>
|
|
<a name="line-349"></a><span class='hs-comment'>--</span>
|
|
<a name="line-350"></a><span class='hs-comment'>-- Throws:</span>
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|
<a name="line-351"></a><span class='hs-comment'>--</span>
|
|
<a name="line-352"></a><span class='hs-comment'>-- - `InvalidArgument` if source file is wrong type (not a symlink)</span>
|
|
<a name="line-353"></a><span class='hs-comment'>-- - `PermissionDenied` if output directory cannot be written to</span>
|
|
<a name="line-354"></a><span class='hs-comment'>-- - `PermissionDenied` if source directory cannot be opened</span>
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|
<a name="line-355"></a><span class='hs-comment'>-- - `SameFile` if source and destination are the same file (`HPathIOException`)</span>
|
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<a name="line-356"></a><span class='hs-comment'>--</span>
|
|
<a name="line-357"></a><span class='hs-comment'>--</span>
|
|
<a name="line-358"></a><span class='hs-comment'>-- Throws in `Strict` mode only:</span>
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|
<a name="line-359"></a><span class='hs-comment'>--</span>
|
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<a name="line-360"></a><span class='hs-comment'>-- - `AlreadyExists` if destination file already exists</span>
|
|
<a name="line-361"></a><span class='hs-comment'>--</span>
|
|
<a name="line-362"></a><span class='hs-comment'>-- Throws in `Overwrite` mode only:</span>
|
|
<a name="line-363"></a><span class='hs-comment'>--</span>
|
|
<a name="line-364"></a><span class='hs-comment'>-- - `UnsatisfiedConstraints` if destination file is non-empty directory</span>
|
|
<a name="line-365"></a><span class='hs-comment'>--</span>
|
|
<a name="line-366"></a><span class='hs-comment'>-- Note: calls `symlink`</span>
|
|
<a name="line-367"></a><span class='hs-definition'>recreateSymlink</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-comment'>-- ^ the old symlink file</span>
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<a name="line-368"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-comment'>-- ^ destination file</span>
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<a name="line-369"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CopyMode</span>
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<a name="line-370"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
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|
<a name="line-371"></a><span class='hs-definition'>recreateSymlink</span> <span class='hs-varid'>symsource</span> <span class='hs-varid'>newsym</span> <span class='hs-varid'>cm</span>
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<a name="line-372"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
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<a name="line-373"></a> <span class='hs-varid'>throwSameFile</span> <span class='hs-varid'>symsource</span> <span class='hs-varid'>newsym</span>
|
|
<a name="line-374"></a> <span class='hs-varid'>sympoint</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readSymbolicLink</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromAbs</span> <span class='hs-varid'>symsource</span><span class='hs-layout'>)</span>
|
|
<a name="line-375"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>cm</span> <span class='hs-keyword'>of</span>
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|
<a name="line-376"></a> <span class='hs-conid'>Strict</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
|
|
<a name="line-377"></a> <span class='hs-conid'>Overwrite</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
|
|
<a name="line-378"></a> <span class='hs-varid'>writable</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>isWritable</span> <span class='hs-layout'>(</span><span class='hs-varid'>dirname</span> <span class='hs-varid'>newsym</span><span class='hs-layout'>)</span>
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|
<a name="line-379"></a> <span class='hs-varid'>isfile</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>doesFileExist</span> <span class='hs-varid'>newsym</span>
|
|
<a name="line-380"></a> <span class='hs-varid'>isdir</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>doesDirectoryExist</span> <span class='hs-varid'>newsym</span>
|
|
<a name="line-381"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>writable</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>isfile</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>deleteFile</span> <span class='hs-varid'>newsym</span><span class='hs-layout'>)</span>
|
|
<a name="line-382"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>writable</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>isdir</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>deleteDir</span> <span class='hs-varid'>newsym</span><span class='hs-layout'>)</span>
|
|
<a name="line-383"></a> <span class='hs-varid'>createSymbolicLink</span> <span class='hs-varid'>sympoint</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromAbs</span> <span class='hs-varid'>newsym</span><span class='hs-layout'>)</span>
|
|
<a name="line-384"></a>
|
|
<a name="line-385"></a>
|
|
<a name="line-386"></a><a name="copyFile"></a><span class='hs-comment'>-- |Copies the given regular file to the given destination.</span>
|
|
<a name="line-387"></a><span class='hs-comment'>-- Neither follows symbolic links, nor accepts them.</span>
|
|
<a name="line-388"></a><span class='hs-comment'>-- For "copying" symbolic links, use `recreateSymlink` instead.</span>
|
|
<a name="line-389"></a><span class='hs-comment'>--</span>
|
|
<a name="line-390"></a><span class='hs-comment'>-- Note that this is still sort of a low-level function and doesn't</span>
|
|
<a name="line-391"></a><span class='hs-comment'>-- examine file types. For a more high-level version, use `easyCopy`</span>
|
|
<a name="line-392"></a><span class='hs-comment'>-- instead.</span>
|
|
<a name="line-393"></a><span class='hs-comment'>--</span>
|
|
<a name="line-394"></a><span class='hs-comment'>-- In `Overwrite` mode only overwrites actual files, not directories.</span>
|
|
<a name="line-395"></a><span class='hs-comment'>--</span>
|
|
<a name="line-396"></a><span class='hs-comment'>-- Safety/reliability concerns:</span>
|
|
<a name="line-397"></a><span class='hs-comment'>--</span>
|
|
<a name="line-398"></a><span class='hs-comment'>-- * `Overwrite` mode is not atomic</span>
|
|
<a name="line-399"></a><span class='hs-comment'>-- * when used on `CharacterDevice`, reads the "contents" and copies</span>
|
|
<a name="line-400"></a><span class='hs-comment'>-- them to a regular file, which might take indefinitely</span>
|
|
<a name="line-401"></a><span class='hs-comment'>-- * when used on `BlockDevice`, may either read the "contents"</span>
|
|
<a name="line-402"></a><span class='hs-comment'>-- and copy them to a regular file (potentially hanging indefinitely)</span>
|
|
<a name="line-403"></a><span class='hs-comment'>-- or may create a regular empty destination file</span>
|
|
<a name="line-404"></a><span class='hs-comment'>-- * when used on `NamedPipe`, will hang indefinitely</span>
|
|
<a name="line-405"></a><span class='hs-comment'>--</span>
|
|
<a name="line-406"></a><span class='hs-comment'>-- Throws:</span>
|
|
<a name="line-407"></a><span class='hs-comment'>--</span>
|
|
<a name="line-408"></a><span class='hs-comment'>-- - `NoSuchThing` if source file does not exist</span>
|
|
<a name="line-409"></a><span class='hs-comment'>-- - `NoSuchThing` if source file is a a `Socket`</span>
|
|
<a name="line-410"></a><span class='hs-comment'>-- - `PermissionDenied` if output directory is not writable</span>
|
|
<a name="line-411"></a><span class='hs-comment'>-- - `PermissionDenied` if source directory can't be opened</span>
|
|
<a name="line-412"></a><span class='hs-comment'>-- - `InvalidArgument` if source file is wrong type (symlink or directory)</span>
|
|
<a name="line-413"></a><span class='hs-comment'>-- - `SameFile` if source and destination are the same file (`HPathIOException`)</span>
|
|
<a name="line-414"></a><span class='hs-comment'>--</span>
|
|
<a name="line-415"></a><span class='hs-comment'>-- Throws in `Strict` mode only:</span>
|
|
<a name="line-416"></a><span class='hs-comment'>--</span>
|
|
<a name="line-417"></a><span class='hs-comment'>-- - `AlreadyExists` if destination already exists</span>
|
|
<a name="line-418"></a><span class='hs-comment'>--</span>
|
|
<a name="line-419"></a><span class='hs-comment'>-- Note: calls `sendfile` and possibly `read`/`write` as fallback</span>
|
|
<a name="line-420"></a><span class='hs-definition'>copyFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-comment'>-- ^ source file</span>
|
|
<a name="line-421"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-comment'>-- ^ destination file</span>
|
|
<a name="line-422"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CopyMode</span>
|
|
<a name="line-423"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
|
|
<a name="line-424"></a><span class='hs-definition'>copyFile</span> <span class='hs-varid'>from</span> <span class='hs-varid'>to</span> <span class='hs-varid'>cm</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
|
|
<a name="line-425"></a> <span class='hs-varid'>throwSameFile</span> <span class='hs-varid'>from</span> <span class='hs-varid'>to</span>
|
|
<a name="line-426"></a>
|
|
<a name="line-427"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>cm</span> <span class='hs-keyword'>of</span>
|
|
<a name="line-428"></a> <span class='hs-conid'>Strict</span> <span class='hs-keyglyph'>-></span> <span class='hs-sel'>_copyFile</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SPDF</span><span class='hs-varop'>.</span><span class='hs-varid'>oNofollow</span><span class='hs-keyglyph'>]</span>
|
|
<a name="line-429"></a> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SPDF</span><span class='hs-varop'>.</span><span class='hs-varid'>oNofollow</span><span class='hs-layout'>,</span> <span class='hs-conid'>SPDF</span><span class='hs-varop'>.</span><span class='hs-varid'>oExcl</span><span class='hs-keyglyph'>]</span>
|
|
<a name="line-430"></a> <span class='hs-varid'>from</span> <span class='hs-varid'>to</span>
|
|
<a name="line-431"></a> <span class='hs-conid'>Overwrite</span> <span class='hs-keyglyph'>-></span>
|
|
<a name="line-432"></a> <span class='hs-varid'>catchIOError</span> <span class='hs-layout'>(</span><span class='hs-sel'>_copyFile</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SPDF</span><span class='hs-varop'>.</span><span class='hs-varid'>oNofollow</span><span class='hs-keyglyph'>]</span>
|
|
<a name="line-433"></a> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SPDF</span><span class='hs-varop'>.</span><span class='hs-varid'>oNofollow</span><span class='hs-layout'>,</span> <span class='hs-conid'>SPDF</span><span class='hs-varop'>.</span><span class='hs-varid'>oTrunc</span><span class='hs-keyglyph'>]</span>
|
|
<a name="line-434"></a> <span class='hs-varid'>from</span> <span class='hs-varid'>to</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span>
|
|
<a name="line-435"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>ioeGetErrorType</span> <span class='hs-varid'>e</span> <span class='hs-keyword'>of</span>
|
|
<a name="line-436"></a> <span class='hs-comment'>-- if the destination file is not writable, we need to</span>
|
|
<a name="line-437"></a> <span class='hs-comment'>-- figure out if we can still copy by deleting it first</span>
|
|
<a name="line-438"></a> <span class='hs-conid'>PermissionDenied</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
|
|
<a name="line-439"></a> <span class='hs-varid'>exists</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>doesFileExist</span> <span class='hs-varid'>to</span>
|
|
<a name="line-440"></a> <span class='hs-varid'>writable</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>isWritable</span> <span class='hs-layout'>(</span><span class='hs-varid'>dirname</span> <span class='hs-varid'>to</span><span class='hs-layout'>)</span>
|
|
<a name="line-441"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>exists</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>writable</span>
|
|
<a name="line-442"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>deleteFile</span> <span class='hs-varid'>to</span> <span class='hs-varop'>>></span> <span class='hs-varid'>copyFile</span> <span class='hs-varid'>from</span> <span class='hs-varid'>to</span> <span class='hs-conid'>Strict</span>
|
|
<a name="line-443"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>ioError</span> <span class='hs-varid'>e</span>
|
|
<a name="line-444"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>ioError</span> <span class='hs-varid'>e</span>
|
|
<a name="line-445"></a>
|
|
<a name="line-446"></a>
|
|
<a name="line-447"></a><span class='hs-sel'>_copyFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SPDF</span><span class='hs-varop'>.</span><span class='hs-conid'>Flags</span><span class='hs-keyglyph'>]</span>
|
|
<a name="line-448"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SPDF</span><span class='hs-varop'>.</span><span class='hs-conid'>Flags</span><span class='hs-keyglyph'>]</span>
|
|
<a name="line-449"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-comment'>-- ^ source file</span>
|
|
<a name="line-450"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-comment'>-- ^ destination file</span>
|
|
<a name="line-451"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
|
|
<a name="line-452"></a><span class='hs-sel'>_copyFile</span> <span class='hs-varid'>sflags</span> <span class='hs-varid'>dflags</span> <span class='hs-varid'>from</span> <span class='hs-varid'>to</span>
|
|
<a name="line-453"></a> <span class='hs-keyglyph'>=</span>
|
|
<a name="line-454"></a> <span class='hs-comment'>-- from sendfile(2) manpage:</span>
|
|
<a name="line-455"></a> <span class='hs-comment'>-- Applications may wish to fall back to read(2)/write(2) in the case</span>
|
|
<a name="line-456"></a> <span class='hs-comment'>-- where sendfile() fails with EINVAL or ENOSYS.</span>
|
|
<a name="line-457"></a> <span class='hs-varid'>withAbsPath</span> <span class='hs-varid'>to</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>to'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>withAbsPath</span> <span class='hs-varid'>from</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>from'</span> <span class='hs-keyglyph'>-></span>
|
|
<a name="line-458"></a> <span class='hs-varid'>catchErrno</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>eINVAL</span><span class='hs-layout'>,</span> <span class='hs-varid'>eNOSYS</span><span class='hs-keyglyph'>]</span>
|
|
<a name="line-459"></a> <span class='hs-layout'>(</span><span class='hs-varid'>sendFileCopy</span> <span class='hs-varid'>from'</span> <span class='hs-varid'>to'</span><span class='hs-layout'>)</span>
|
|
<a name="line-460"></a> <span class='hs-layout'>(</span><span class='hs-varid'>void</span> <span class='hs-varop'>$</span> <span class='hs-varid'>readWriteCopy</span> <span class='hs-varid'>from'</span> <span class='hs-varid'>to'</span><span class='hs-layout'>)</span>
|
|
<a name="line-461"></a> <span class='hs-keyword'>where</span>
|
|
<a name="line-462"></a> <span class='hs-varid'>copyWith</span> <span class='hs-varid'>copyAction</span> <span class='hs-varid'>source</span> <span class='hs-varid'>dest</span> <span class='hs-keyglyph'>=</span>
|
|
<a name="line-463"></a> <span class='hs-varid'>bracket</span> <span class='hs-layout'>(</span><span class='hs-varid'>openFd</span> <span class='hs-varid'>source</span> <span class='hs-conid'>SPI</span><span class='hs-varop'>.</span><span class='hs-conid'>ReadOnly</span> <span class='hs-varid'>sflags</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span>
|
|
<a name="line-464"></a> <span class='hs-conid'>SPI</span><span class='hs-varop'>.</span><span class='hs-varid'>closeFd</span>
|
|
<a name="line-465"></a> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>sfd</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
|
|
<a name="line-466"></a> <span class='hs-varid'>fileM</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Posix</span><span class='hs-varop'>.</span><span class='hs-conid'>Files</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-varid'>fileMode</span>
|
|
<a name="line-467"></a> <span class='hs-varop'><$></span> <span class='hs-varid'>getFdStatus</span> <span class='hs-varid'>sfd</span>
|
|
<a name="line-468"></a> <span class='hs-varid'>bracketeer</span> <span class='hs-layout'>(</span><span class='hs-varid'>openFd</span> <span class='hs-varid'>dest</span> <span class='hs-conid'>SPI</span><span class='hs-varop'>.</span><span class='hs-conid'>WriteOnly</span>
|
|
<a name="line-469"></a> <span class='hs-varid'>dflags</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>fileM</span><span class='hs-layout'>)</span>
|
|
<a name="line-470"></a> <span class='hs-conid'>SPI</span><span class='hs-varop'>.</span><span class='hs-varid'>closeFd</span>
|
|
<a name="line-471"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>fd</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SPI</span><span class='hs-varop'>.</span><span class='hs-varid'>closeFd</span> <span class='hs-varid'>fd</span> <span class='hs-varop'>>></span> <span class='hs-varid'>deleteFile</span> <span class='hs-varid'>to</span><span class='hs-layout'>)</span>
|
|
<a name="line-472"></a> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>dfd</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>copyAction</span> <span class='hs-varid'>sfd</span> <span class='hs-varid'>dfd</span>
|
|
<a name="line-473"></a> <span class='hs-comment'>-- this is low-level stuff utilizing sendfile(2) for speed</span>
|
|
<a name="line-474"></a> <span class='hs-varid'>sendFileCopy</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
|
|
<a name="line-475"></a> <span class='hs-varid'>sendFileCopy</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>copyWith</span>
|
|
<a name="line-476"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>sfd</span> <span class='hs-varid'>dfd</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>sendfileFd</span> <span class='hs-varid'>dfd</span> <span class='hs-varid'>sfd</span> <span class='hs-conid'>EntireFile</span> <span class='hs-varop'>$</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span>
|
|
<a name="line-477"></a> <span class='hs-comment'>-- low-level copy operation utilizing read(2)/write(2)</span>
|
|
<a name="line-478"></a> <span class='hs-comment'>-- in case `sendFileCopy` fails/is unsupported</span>
|
|
<a name="line-479"></a> <span class='hs-varid'>readWriteCopy</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Int</span>
|
|
<a name="line-480"></a> <span class='hs-varid'>readWriteCopy</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>copyWith</span>
|
|
<a name="line-481"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>sfd</span> <span class='hs-varid'>dfd</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>allocaBytes</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>bufSize</span><span class='hs-layout'>)</span>
|
|
<a name="line-482"></a> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>buf</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>write'</span> <span class='hs-varid'>sfd</span> <span class='hs-varid'>dfd</span> <span class='hs-varid'>buf</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span>
|
|
<a name="line-483"></a> <span class='hs-keyword'>where</span>
|
|
<a name="line-484"></a> <span class='hs-varid'>bufSize</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CSize</span>
|
|
<a name="line-485"></a> <span class='hs-varid'>bufSize</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>8192</span>
|
|
<a name="line-486"></a> <span class='hs-varid'>write'</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Fd</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Fd</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Int</span>
|
|
<a name="line-487"></a> <span class='hs-varid'>write'</span> <span class='hs-varid'>sfd</span> <span class='hs-varid'>dfd</span> <span class='hs-varid'>buf</span> <span class='hs-varid'>totalsize</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
|
|
<a name="line-488"></a> <span class='hs-varid'>size</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>SPB</span><span class='hs-varop'>.</span><span class='hs-varid'>fdReadBuf</span> <span class='hs-varid'>sfd</span> <span class='hs-varid'>buf</span> <span class='hs-varid'>bufSize</span>
|
|
<a name="line-489"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>size</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span>
|
|
<a name="line-490"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>totalsize</span>
|
|
<a name="line-491"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>rsize</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>SPB</span><span class='hs-varop'>.</span><span class='hs-varid'>fdWriteBuf</span> <span class='hs-varid'>dfd</span> <span class='hs-varid'>buf</span> <span class='hs-varid'>size</span>
|
|
<a name="line-492"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>rsize</span> <span class='hs-varop'>/=</span> <span class='hs-varid'>size</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>throwIO</span> <span class='hs-varop'>.</span> <span class='hs-conid'>CopyFailed</span> <span class='hs-varop'>$</span> <span class='hs-str'>"wrong size!"</span><span class='hs-layout'>)</span>
|
|
<a name="line-493"></a> <span class='hs-varid'>write'</span> <span class='hs-varid'>sfd</span> <span class='hs-varid'>dfd</span> <span class='hs-varid'>buf</span> <span class='hs-layout'>(</span><span class='hs-varid'>totalsize</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>size</span><span class='hs-layout'>)</span>
|
|
<a name="line-494"></a>
|
|
<a name="line-495"></a>
|
|
<a name="line-496"></a><a name="easyCopy"></a><span class='hs-comment'>-- |Copies a regular file, directory or symbolic link. In case of a</span>
|
|
<a name="line-497"></a><span class='hs-comment'>-- symbolic link it is just recreated, even if it points to a directory.</span>
|
|
<a name="line-498"></a><span class='hs-comment'>-- Any other file type is ignored.</span>
|
|
<a name="line-499"></a><span class='hs-comment'>--</span>
|
|
<a name="line-500"></a><span class='hs-comment'>-- Safety/reliability concerns:</span>
|
|
<a name="line-501"></a><span class='hs-comment'>--</span>
|
|
<a name="line-502"></a><span class='hs-comment'>-- * examines filetypes explicitly</span>
|
|
<a name="line-503"></a><span class='hs-comment'>-- * calls `copyDirRecursive` for directories</span>
|
|
<a name="line-504"></a><span class='hs-definition'>easyCopy</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span>
|
|
<a name="line-505"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span>
|
|
<a name="line-506"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CopyMode</span>
|
|
<a name="line-507"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>RecursiveMode</span>
|
|
<a name="line-508"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
|
|
<a name="line-509"></a><span class='hs-definition'>easyCopy</span> <span class='hs-varid'>from</span> <span class='hs-varid'>to</span> <span class='hs-varid'>cm</span> <span class='hs-varid'>rm</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
|
|
<a name="line-510"></a> <span class='hs-varid'>ftype</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getFileType</span> <span class='hs-varid'>from</span>
|
|
<a name="line-511"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>ftype</span> <span class='hs-keyword'>of</span>
|
|
<a name="line-512"></a> <span class='hs-conid'>SymbolicLink</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>recreateSymlink</span> <span class='hs-varid'>from</span> <span class='hs-varid'>to</span> <span class='hs-varid'>cm</span>
|
|
<a name="line-513"></a> <span class='hs-conid'>RegularFile</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>copyFile</span> <span class='hs-varid'>from</span> <span class='hs-varid'>to</span> <span class='hs-varid'>cm</span>
|
|
<a name="line-514"></a> <span class='hs-conid'>Directory</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>copyDirRecursive</span> <span class='hs-varid'>from</span> <span class='hs-varid'>to</span> <span class='hs-varid'>cm</span> <span class='hs-varid'>rm</span>
|
|
<a name="line-515"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
|
|
<a name="line-516"></a>
|
|
<a name="line-517"></a>
|
|
<a name="line-518"></a>
|
|
<a name="line-519"></a>
|
|
<a name="line-520"></a>
|
|
<a name="line-521"></a> <span class='hs-comment'>---------------------</span>
|
|
<a name="line-522"></a> <span class='hs-comment'>--[ File Deletion ]--</span>
|
|
<a name="line-523"></a> <span class='hs-comment'>---------------------</span>
|
|
<a name="line-524"></a>
|
|
<a name="line-525"></a>
|
|
<a name="line-526"></a><a name="deleteFile"></a><span class='hs-comment'>-- |Deletes the given file. Raises `eISDIR`</span>
|
|
<a name="line-527"></a><span class='hs-comment'>-- if run on a directory. Does not follow symbolic links.</span>
|
|
<a name="line-528"></a><span class='hs-comment'>--</span>
|
|
<a name="line-529"></a><span class='hs-comment'>-- Throws:</span>
|
|
<a name="line-530"></a><span class='hs-comment'>--</span>
|
|
<a name="line-531"></a><span class='hs-comment'>-- - `InappropriateType` for wrong file type (directory)</span>
|
|
<a name="line-532"></a><span class='hs-comment'>-- - `NoSuchThing` if the file does not exist</span>
|
|
<a name="line-533"></a><span class='hs-comment'>-- - `PermissionDenied` if the directory cannot be read</span>
|
|
<a name="line-534"></a><span class='hs-definition'>deleteFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
|
|
<a name="line-535"></a><span class='hs-definition'>deleteFile</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withAbsPath</span> <span class='hs-varid'>p</span> <span class='hs-varid'>removeLink</span>
|
|
<a name="line-536"></a>
|
|
<a name="line-537"></a>
|
|
<a name="line-538"></a><a name="deleteDir"></a><span class='hs-comment'>-- |Deletes the given directory, which must be empty, never symlinks.</span>
|
|
<a name="line-539"></a><span class='hs-comment'>--</span>
|
|
<a name="line-540"></a><span class='hs-comment'>-- Throws:</span>
|
|
<a name="line-541"></a><span class='hs-comment'>--</span>
|
|
<a name="line-542"></a><span class='hs-comment'>-- - `InappropriateType` for wrong file type (symlink to directory)</span>
|
|
<a name="line-543"></a><span class='hs-comment'>-- - `InappropriateType` for wrong file type (regular file)</span>
|
|
<a name="line-544"></a><span class='hs-comment'>-- - `NoSuchThing` if directory does not exist</span>
|
|
<a name="line-545"></a><span class='hs-comment'>-- - `UnsatisfiedConstraints` if directory is not empty</span>
|
|
<a name="line-546"></a><span class='hs-comment'>-- - `PermissionDenied` if we can't open or write to parent directory</span>
|
|
<a name="line-547"></a><span class='hs-comment'>--</span>
|
|
<a name="line-548"></a><span class='hs-comment'>-- Notes: calls `rmdir`</span>
|
|
<a name="line-549"></a><span class='hs-definition'>deleteDir</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
|
|
<a name="line-550"></a><span class='hs-definition'>deleteDir</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withAbsPath</span> <span class='hs-varid'>p</span> <span class='hs-varid'>removeDirectory</span>
|
|
<a name="line-551"></a>
|
|
<a name="line-552"></a>
|
|
<a name="line-553"></a><a name="deleteDirRecursive"></a><span class='hs-comment'>-- |Deletes the given directory recursively. Does not follow symbolic</span>
|
|
<a name="line-554"></a><span class='hs-comment'>-- links. Tries `deleteDir` first before attemtping a recursive</span>
|
|
<a name="line-555"></a><span class='hs-comment'>-- deletion.</span>
|
|
<a name="line-556"></a><span class='hs-comment'>--</span>
|
|
<a name="line-557"></a><span class='hs-comment'>-- On directory contents this behaves like `easyDelete`</span>
|
|
<a name="line-558"></a><span class='hs-comment'>-- and thus will ignore any file type that is not `RegularFile`,</span>
|
|
<a name="line-559"></a><span class='hs-comment'>-- `SymbolicLink` or `Directory`.</span>
|
|
<a name="line-560"></a><span class='hs-comment'>--</span>
|
|
<a name="line-561"></a><span class='hs-comment'>-- Safety/reliability concerns:</span>
|
|
<a name="line-562"></a><span class='hs-comment'>--</span>
|
|
<a name="line-563"></a><span class='hs-comment'>-- * not atomic</span>
|
|
<a name="line-564"></a><span class='hs-comment'>-- * examines filetypes explicitly</span>
|
|
<a name="line-565"></a><span class='hs-comment'>--</span>
|
|
<a name="line-566"></a><span class='hs-comment'>-- Throws:</span>
|
|
<a name="line-567"></a><span class='hs-comment'>--</span>
|
|
<a name="line-568"></a><span class='hs-comment'>-- - `InappropriateType` for wrong file type (symlink to directory)</span>
|
|
<a name="line-569"></a><span class='hs-comment'>-- - `InappropriateType` for wrong file type (regular file)</span>
|
|
<a name="line-570"></a><span class='hs-comment'>-- - `NoSuchThing` if directory does not exist</span>
|
|
<a name="line-571"></a><span class='hs-comment'>-- - `PermissionDenied` if we can't open or write to parent directory</span>
|
|
<a name="line-572"></a><span class='hs-definition'>deleteDirRecursive</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
|
|
<a name="line-573"></a><span class='hs-definition'>deleteDirRecursive</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span>
|
|
<a name="line-574"></a> <span class='hs-varid'>catchErrno</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>eNOTEMPTY</span><span class='hs-layout'>,</span> <span class='hs-varid'>eEXIST</span><span class='hs-keyglyph'>]</span>
|
|
<a name="line-575"></a> <span class='hs-layout'>(</span><span class='hs-varid'>deleteDir</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span>
|
|
<a name="line-576"></a> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
|
|
<a name="line-577"></a> <span class='hs-varid'>files</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getDirsFiles</span> <span class='hs-varid'>p</span>
|
|
<a name="line-578"></a> <span class='hs-varid'>for_</span> <span class='hs-varid'>files</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>file</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
|
|
<a name="line-579"></a> <span class='hs-varid'>ftype</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getFileType</span> <span class='hs-varid'>file</span>
|
|
<a name="line-580"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>ftype</span> <span class='hs-keyword'>of</span>
|
|
<a name="line-581"></a> <span class='hs-conid'>SymbolicLink</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>deleteFile</span> <span class='hs-varid'>file</span>
|
|
<a name="line-582"></a> <span class='hs-conid'>Directory</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>deleteDirRecursive</span> <span class='hs-varid'>file</span>
|
|
<a name="line-583"></a> <span class='hs-conid'>RegularFile</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>deleteFile</span> <span class='hs-varid'>file</span>
|
|
<a name="line-584"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
|
|
<a name="line-585"></a> <span class='hs-varid'>removeDirectory</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toFilePath</span> <span class='hs-varop'>$</span> <span class='hs-varid'>p</span>
|
|
<a name="line-586"></a>
|
|
<a name="line-587"></a>
|
|
<a name="line-588"></a><a name="easyDelete"></a><span class='hs-comment'>-- |Deletes a file, directory or symlink.</span>
|
|
<a name="line-589"></a><span class='hs-comment'>-- In case of directory, performs recursive deletion. In case of</span>
|
|
<a name="line-590"></a><span class='hs-comment'>-- a symlink, the symlink file is deleted.</span>
|
|
<a name="line-591"></a><span class='hs-comment'>-- Any other file type is ignored.</span>
|
|
<a name="line-592"></a><span class='hs-comment'>--</span>
|
|
<a name="line-593"></a><span class='hs-comment'>-- Safety/reliability concerns:</span>
|
|
<a name="line-594"></a><span class='hs-comment'>--</span>
|
|
<a name="line-595"></a><span class='hs-comment'>-- * examines filetypes explicitly</span>
|
|
<a name="line-596"></a><span class='hs-comment'>-- * calls `deleteDirRecursive` for directories</span>
|
|
<a name="line-597"></a><span class='hs-definition'>easyDelete</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
|
|
<a name="line-598"></a><span class='hs-definition'>easyDelete</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
|
|
<a name="line-599"></a> <span class='hs-varid'>ftype</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getFileType</span> <span class='hs-varid'>p</span>
|
|
<a name="line-600"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>ftype</span> <span class='hs-keyword'>of</span>
|
|
<a name="line-601"></a> <span class='hs-conid'>SymbolicLink</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>deleteFile</span> <span class='hs-varid'>p</span>
|
|
<a name="line-602"></a> <span class='hs-conid'>Directory</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>deleteDirRecursive</span> <span class='hs-varid'>p</span>
|
|
<a name="line-603"></a> <span class='hs-conid'>RegularFile</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>deleteFile</span> <span class='hs-varid'>p</span>
|
|
<a name="line-604"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
|
|
<a name="line-605"></a>
|
|
<a name="line-606"></a>
|
|
<a name="line-607"></a>
|
|
<a name="line-608"></a>
|
|
<a name="line-609"></a> <span class='hs-comment'>--------------------</span>
|
|
<a name="line-610"></a> <span class='hs-comment'>--[ File Opening ]--</span>
|
|
<a name="line-611"></a> <span class='hs-comment'>--------------------</span>
|
|
<a name="line-612"></a>
|
|
<a name="line-613"></a>
|
|
<a name="line-614"></a><a name="openFile"></a><span class='hs-comment'>-- |Opens a file appropriately by invoking xdg-open. The file type</span>
|
|
<a name="line-615"></a><span class='hs-comment'>-- is not checked. This forks a process.</span>
|
|
<a name="line-616"></a><span class='hs-definition'>openFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span>
|
|
<a name="line-617"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>ProcessID</span>
|
|
<a name="line-618"></a><span class='hs-definition'>openFile</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span>
|
|
<a name="line-619"></a> <span class='hs-varid'>withAbsPath</span> <span class='hs-varid'>p</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>fp</span> <span class='hs-keyglyph'>-></span>
|
|
<a name="line-620"></a> <span class='hs-conid'>SPP</span><span class='hs-varop'>.</span><span class='hs-varid'>forkProcess</span> <span class='hs-varop'>$</span> <span class='hs-conid'>SPP</span><span class='hs-varop'>.</span><span class='hs-varid'>executeFile</span> <span class='hs-str'>"xdg-open"</span> <span class='hs-conid'>True</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>fp</span><span class='hs-keyglyph'>]</span> <span class='hs-conid'>Nothing</span>
|
|
<a name="line-621"></a>
|
|
<a name="line-622"></a>
|
|
<a name="line-623"></a><a name="executeFile"></a><span class='hs-comment'>-- |Executes a program with the given arguments. This forks a process.</span>
|
|
<a name="line-624"></a><span class='hs-definition'>executeFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-comment'>-- ^ program</span>
|
|
<a name="line-625"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ByteString</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ arguments</span>
|
|
<a name="line-626"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>ProcessID</span>
|
|
<a name="line-627"></a><span class='hs-definition'>executeFile</span> <span class='hs-varid'>fp</span> <span class='hs-varid'>args</span>
|
|
<a name="line-628"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withAbsPath</span> <span class='hs-varid'>fp</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>fpb</span> <span class='hs-keyglyph'>-></span>
|
|
<a name="line-629"></a> <span class='hs-conid'>SPP</span><span class='hs-varop'>.</span><span class='hs-varid'>forkProcess</span>
|
|
<a name="line-630"></a> <span class='hs-varop'>$</span> <span class='hs-conid'>SPP</span><span class='hs-varop'>.</span><span class='hs-varid'>executeFile</span> <span class='hs-varid'>fpb</span> <span class='hs-conid'>True</span> <span class='hs-varid'>args</span> <span class='hs-conid'>Nothing</span>
|
|
<a name="line-631"></a>
|
|
<a name="line-632"></a>
|
|
<a name="line-633"></a>
|
|
<a name="line-634"></a>
|
|
<a name="line-635"></a> <span class='hs-comment'>---------------------</span>
|
|
<a name="line-636"></a> <span class='hs-comment'>--[ File Creation ]--</span>
|
|
<a name="line-637"></a> <span class='hs-comment'>---------------------</span>
|
|
<a name="line-638"></a>
|
|
<a name="line-639"></a>
|
|
<a name="line-640"></a><a name="createRegularFile"></a><span class='hs-comment'>-- |Create an empty regular file at the given directory with the given filename.</span>
|
|
<a name="line-641"></a><span class='hs-comment'>--</span>
|
|
<a name="line-642"></a><span class='hs-comment'>-- Throws:</span>
|
|
<a name="line-643"></a><span class='hs-comment'>--</span>
|
|
<a name="line-644"></a><span class='hs-comment'>-- - `PermissionDenied` if output directory cannot be written to</span>
|
|
<a name="line-645"></a><span class='hs-comment'>-- - `AlreadyExists` if destination file already exists</span>
|
|
<a name="line-646"></a><span class='hs-definition'>createRegularFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
|
|
<a name="line-647"></a><span class='hs-definition'>createRegularFile</span> <span class='hs-varid'>dest</span> <span class='hs-keyglyph'>=</span>
|
|
<a name="line-648"></a> <span class='hs-varid'>bracket</span> <span class='hs-layout'>(</span><span class='hs-conid'>SPI</span><span class='hs-varop'>.</span><span class='hs-varid'>openFd</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromAbs</span> <span class='hs-varid'>dest</span><span class='hs-layout'>)</span> <span class='hs-conid'>SPI</span><span class='hs-varop'>.</span><span class='hs-conid'>WriteOnly</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>newFilePerms</span><span class='hs-layout'>)</span>
|
|
<a name="line-649"></a> <span class='hs-layout'>(</span><span class='hs-conid'>SPI</span><span class='hs-varop'>.</span><span class='hs-varid'>defaultFileFlags</span> <span class='hs-layout'>{</span> <span class='hs-varid'>exclusive</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
|
|
<a name="line-650"></a> <span class='hs-conid'>SPI</span><span class='hs-varop'>.</span><span class='hs-varid'>closeFd</span>
|
|
<a name="line-651"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span>
|
|
<a name="line-652"></a>
|
|
<a name="line-653"></a>
|
|
<a name="line-654"></a><a name="createDir"></a><span class='hs-comment'>-- |Create an empty directory at the given directory with the given filename.</span>
|
|
<a name="line-655"></a><span class='hs-comment'>--</span>
|
|
<a name="line-656"></a><span class='hs-comment'>-- Throws:</span>
|
|
<a name="line-657"></a><span class='hs-comment'>--</span>
|
|
<a name="line-658"></a><span class='hs-comment'>-- - `PermissionDenied` if output directory cannot be written to</span>
|
|
<a name="line-659"></a><span class='hs-comment'>-- - `AlreadyExists` if destination directory already exists</span>
|
|
<a name="line-660"></a><span class='hs-definition'>createDir</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
|
|
<a name="line-661"></a><span class='hs-definition'>createDir</span> <span class='hs-varid'>dest</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>createDirectory</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromAbs</span> <span class='hs-varid'>dest</span><span class='hs-layout'>)</span> <span class='hs-varid'>newDirPerms</span>
|
|
<a name="line-662"></a>
|
|
<a name="line-663"></a>
|
|
<a name="line-664"></a><a name="createSymlink"></a><span class='hs-comment'>-- |Create a symlink.</span>
|
|
<a name="line-665"></a><span class='hs-comment'>--</span>
|
|
<a name="line-666"></a><span class='hs-comment'>-- Throws:</span>
|
|
<a name="line-667"></a><span class='hs-comment'>--</span>
|
|
<a name="line-668"></a><span class='hs-comment'>-- - `PermissionDenied` if output directory cannot be written to</span>
|
|
<a name="line-669"></a><span class='hs-comment'>-- - `AlreadyExists` if destination file already exists</span>
|
|
<a name="line-670"></a><span class='hs-comment'>--</span>
|
|
<a name="line-671"></a><span class='hs-comment'>-- Note: calls `symlink`</span>
|
|
<a name="line-672"></a><span class='hs-definition'>createSymlink</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-comment'>-- ^ destination file</span>
|
|
<a name="line-673"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteString</span> <span class='hs-comment'>-- ^ path the symlink points to</span>
|
|
<a name="line-674"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
|
|
<a name="line-675"></a><span class='hs-definition'>createSymlink</span> <span class='hs-varid'>dest</span> <span class='hs-varid'>sympoint</span>
|
|
<a name="line-676"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>createSymbolicLink</span> <span class='hs-varid'>sympoint</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromAbs</span> <span class='hs-varid'>dest</span><span class='hs-layout'>)</span>
|
|
<a name="line-677"></a>
|
|
<a name="line-678"></a>
|
|
<a name="line-679"></a>
|
|
<a name="line-680"></a> <span class='hs-comment'>----------------------------</span>
|
|
<a name="line-681"></a> <span class='hs-comment'>--[ File Renaming/Moving ]--</span>
|
|
<a name="line-682"></a> <span class='hs-comment'>----------------------------</span>
|
|
<a name="line-683"></a>
|
|
<a name="line-684"></a>
|
|
<a name="line-685"></a><a name="renameFile"></a><span class='hs-comment'>-- |Rename a given file with the provided filename. Destination and source</span>
|
|
<a name="line-686"></a><span class='hs-comment'>-- must be on the same device, otherwise `eXDEV` will be raised.</span>
|
|
<a name="line-687"></a><span class='hs-comment'>--</span>
|
|
<a name="line-688"></a><span class='hs-comment'>-- Does not follow symbolic links, but renames the symbolic link file.</span>
|
|
<a name="line-689"></a><span class='hs-comment'>--</span>
|
|
<a name="line-690"></a><span class='hs-comment'>-- Safety/reliability concerns:</span>
|
|
<a name="line-691"></a><span class='hs-comment'>--</span>
|
|
<a name="line-692"></a><span class='hs-comment'>-- * has a separate set of exception handling, apart from the syscall</span>
|
|
<a name="line-693"></a><span class='hs-comment'>--</span>
|
|
<a name="line-694"></a><span class='hs-comment'>-- Throws:</span>
|
|
<a name="line-695"></a><span class='hs-comment'>--</span>
|
|
<a name="line-696"></a><span class='hs-comment'>-- - `NoSuchThing` if source file does not exist</span>
|
|
<a name="line-697"></a><span class='hs-comment'>-- - `PermissionDenied` if output directory cannot be written to</span>
|
|
<a name="line-698"></a><span class='hs-comment'>-- - `PermissionDenied` if source directory cannot be opened</span>
|
|
<a name="line-699"></a><span class='hs-comment'>-- - `UnsupportedOperation` if source and destination are on different devices</span>
|
|
<a name="line-700"></a><span class='hs-comment'>-- - `FileDoesExist` if destination file already exists (`HPathIOException`)</span>
|
|
<a name="line-701"></a><span class='hs-comment'>-- - `DirDoesExist` if destination directory already exists (`HPathIOException`)</span>
|
|
<a name="line-702"></a><span class='hs-comment'>-- - `SameFile` if destination and source are the same file (`HPathIOException`)</span>
|
|
<a name="line-703"></a><span class='hs-comment'>--</span>
|
|
<a name="line-704"></a><span class='hs-comment'>-- Note: calls `rename` (but does not allow to rename over existing files)</span>
|
|
<a name="line-705"></a><span class='hs-definition'>renameFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
|
|
<a name="line-706"></a><span class='hs-definition'>renameFile</span> <span class='hs-varid'>fromf</span> <span class='hs-varid'>tof</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
|
|
<a name="line-707"></a> <span class='hs-varid'>throwSameFile</span> <span class='hs-varid'>fromf</span> <span class='hs-varid'>tof</span>
|
|
<a name="line-708"></a> <span class='hs-varid'>throwFileDoesExist</span> <span class='hs-varid'>tof</span>
|
|
<a name="line-709"></a> <span class='hs-varid'>throwDirDoesExist</span> <span class='hs-varid'>tof</span>
|
|
<a name="line-710"></a> <span class='hs-varid'>rename</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromAbs</span> <span class='hs-varid'>fromf</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromAbs</span> <span class='hs-varid'>tof</span><span class='hs-layout'>)</span>
|
|
<a name="line-711"></a>
|
|
<a name="line-712"></a>
|
|
<a name="line-713"></a><a name="moveFile"></a><span class='hs-comment'>-- |Move a file. This also works across devices by copy-delete fallback.</span>
|
|
<a name="line-714"></a><span class='hs-comment'>-- And also works on directories.</span>
|
|
<a name="line-715"></a><span class='hs-comment'>--</span>
|
|
<a name="line-716"></a><span class='hs-comment'>-- Does not follow symbolic links, but renames the symbolic link file.</span>
|
|
<a name="line-717"></a><span class='hs-comment'>--</span>
|
|
<a name="line-718"></a><span class='hs-comment'>--</span>
|
|
<a name="line-719"></a><span class='hs-comment'>-- Safety/reliability concerns:</span>
|
|
<a name="line-720"></a><span class='hs-comment'>--</span>
|
|
<a name="line-721"></a><span class='hs-comment'>-- * `Overwrite` mode is not atomic</span>
|
|
<a name="line-722"></a><span class='hs-comment'>-- * copy-delete fallback is inherently non-atomic</span>
|
|
<a name="line-723"></a><span class='hs-comment'>-- * since this function calls `easyCopy` and `easyDelete` as a fallback</span>
|
|
<a name="line-724"></a><span class='hs-comment'>-- to `renameFile`, file types that are not `RegularFile`, `SymbolicLink`</span>
|
|
<a name="line-725"></a><span class='hs-comment'>-- or `Directory` may be ignored</span>
|
|
<a name="line-726"></a><span class='hs-comment'>-- * for `Overwrite` mode, the destination will be deleted (not recursively)</span>
|
|
<a name="line-727"></a><span class='hs-comment'>-- before moving</span>
|
|
<a name="line-728"></a><span class='hs-comment'>--</span>
|
|
<a name="line-729"></a><span class='hs-comment'>-- Throws:</span>
|
|
<a name="line-730"></a><span class='hs-comment'>--</span>
|
|
<a name="line-731"></a><span class='hs-comment'>-- - `NoSuchThing` if source file does not exist</span>
|
|
<a name="line-732"></a><span class='hs-comment'>-- - `PermissionDenied` if output directory cannot be written to</span>
|
|
<a name="line-733"></a><span class='hs-comment'>-- - `PermissionDenied` if source directory cannot be opened</span>
|
|
<a name="line-734"></a><span class='hs-comment'>-- - `SameFile` if destination and source are the same file (`HPathIOException`)</span>
|
|
<a name="line-735"></a><span class='hs-comment'>--</span>
|
|
<a name="line-736"></a><span class='hs-comment'>-- Throws in `Strict` mode only:</span>
|
|
<a name="line-737"></a><span class='hs-comment'>--</span>
|
|
<a name="line-738"></a><span class='hs-comment'>-- - `FileDoesExist` if destination file already exists (`HPathIOException`)</span>
|
|
<a name="line-739"></a><span class='hs-comment'>-- - `DirDoesExist` if destination directory already exists (`HPathIOException`)</span>
|
|
<a name="line-740"></a><span class='hs-comment'>--</span>
|
|
<a name="line-741"></a><span class='hs-comment'>-- Note: calls `rename` (but does not allow to rename over existing files)</span>
|
|
<a name="line-742"></a><span class='hs-definition'>moveFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-comment'>-- ^ file to move</span>
|
|
<a name="line-743"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-comment'>-- ^ destination</span>
|
|
<a name="line-744"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CopyMode</span>
|
|
<a name="line-745"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
|
|
<a name="line-746"></a><span class='hs-definition'>moveFile</span> <span class='hs-varid'>from</span> <span class='hs-varid'>to</span> <span class='hs-varid'>cm</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
|
|
<a name="line-747"></a> <span class='hs-varid'>throwSameFile</span> <span class='hs-varid'>from</span> <span class='hs-varid'>to</span>
|
|
<a name="line-748"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>cm</span> <span class='hs-keyword'>of</span>
|
|
<a name="line-749"></a> <span class='hs-conid'>Strict</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>catchErrno</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>eXDEV</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-varid'>renameFile</span> <span class='hs-varid'>from</span> <span class='hs-varid'>to</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
|
|
<a name="line-750"></a> <span class='hs-varid'>easyCopy</span> <span class='hs-varid'>from</span> <span class='hs-varid'>to</span> <span class='hs-conid'>Strict</span> <span class='hs-conid'>FailEarly</span>
|
|
<a name="line-751"></a> <span class='hs-varid'>easyDelete</span> <span class='hs-varid'>from</span>
|
|
<a name="line-752"></a> <span class='hs-conid'>Overwrite</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
|
|
<a name="line-753"></a> <span class='hs-varid'>ft</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getFileType</span> <span class='hs-varid'>from</span>
|
|
<a name="line-754"></a> <span class='hs-varid'>writable</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>isWritable</span> <span class='hs-varop'>$</span> <span class='hs-varid'>dirname</span> <span class='hs-varid'>to</span>
|
|
<a name="line-755"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>ft</span> <span class='hs-keyword'>of</span>
|
|
<a name="line-756"></a> <span class='hs-conid'>RegularFile</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
|
|
<a name="line-757"></a> <span class='hs-varid'>exists</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>doesFileExist</span> <span class='hs-varid'>to</span>
|
|
<a name="line-758"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>exists</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>writable</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>deleteFile</span> <span class='hs-varid'>to</span><span class='hs-layout'>)</span>
|
|
<a name="line-759"></a> <span class='hs-conid'>SymbolicLink</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
|
|
<a name="line-760"></a> <span class='hs-varid'>exists</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>doesFileExist</span> <span class='hs-varid'>to</span>
|
|
<a name="line-761"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>exists</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>writable</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>deleteFile</span> <span class='hs-varid'>to</span><span class='hs-layout'>)</span>
|
|
<a name="line-762"></a> <span class='hs-conid'>Directory</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
|
|
<a name="line-763"></a> <span class='hs-varid'>exists</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>doesDirectoryExist</span> <span class='hs-varid'>to</span>
|
|
<a name="line-764"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>exists</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>writable</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>deleteDir</span> <span class='hs-varid'>to</span><span class='hs-layout'>)</span>
|
|
<a name="line-765"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
|
|
<a name="line-766"></a> <span class='hs-varid'>moveFile</span> <span class='hs-varid'>from</span> <span class='hs-varid'>to</span> <span class='hs-conid'>Strict</span>
|
|
<a name="line-767"></a>
|
|
<a name="line-768"></a>
|
|
<a name="line-769"></a>
|
|
<a name="line-770"></a>
|
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<a name="line-771"></a>
|
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<a name="line-772"></a>
|
|
<a name="line-773"></a> <span class='hs-comment'>-----------------------</span>
|
|
<a name="line-774"></a> <span class='hs-comment'>--[ File Permissions]--</span>
|
|
<a name="line-775"></a> <span class='hs-comment'>-----------------------</span>
|
|
<a name="line-776"></a>
|
|
<a name="line-777"></a>
|
|
<a name="line-778"></a><a name="newFilePerms"></a><span class='hs-comment'>-- |Default permissions for a new file.</span>
|
|
<a name="line-779"></a><span class='hs-definition'>newFilePerms</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileMode</span>
|
|
<a name="line-780"></a><span class='hs-definition'>newFilePerms</span>
|
|
<a name="line-781"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ownerWriteMode</span>
|
|
<a name="line-782"></a> <span class='hs-varop'>`unionFileModes`</span> <span class='hs-varid'>ownerReadMode</span>
|
|
<a name="line-783"></a> <span class='hs-varop'>`unionFileModes`</span> <span class='hs-varid'>groupWriteMode</span>
|
|
<a name="line-784"></a> <span class='hs-varop'>`unionFileModes`</span> <span class='hs-varid'>groupReadMode</span>
|
|
<a name="line-785"></a> <span class='hs-varop'>`unionFileModes`</span> <span class='hs-varid'>otherWriteMode</span>
|
|
<a name="line-786"></a> <span class='hs-varop'>`unionFileModes`</span> <span class='hs-varid'>otherReadMode</span>
|
|
<a name="line-787"></a>
|
|
<a name="line-788"></a>
|
|
<a name="line-789"></a><a name="newDirPerms"></a><span class='hs-comment'>-- |Default permissions for a new directory.</span>
|
|
<a name="line-790"></a><span class='hs-definition'>newDirPerms</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileMode</span>
|
|
<a name="line-791"></a><span class='hs-definition'>newDirPerms</span>
|
|
<a name="line-792"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ownerModes</span>
|
|
<a name="line-793"></a> <span class='hs-varop'>`unionFileModes`</span> <span class='hs-varid'>groupExecuteMode</span>
|
|
<a name="line-794"></a> <span class='hs-varop'>`unionFileModes`</span> <span class='hs-varid'>groupReadMode</span>
|
|
<a name="line-795"></a> <span class='hs-varop'>`unionFileModes`</span> <span class='hs-varid'>otherExecuteMode</span>
|
|
<a name="line-796"></a> <span class='hs-varop'>`unionFileModes`</span> <span class='hs-varid'>otherReadMode</span>
|
|
<a name="line-797"></a>
|
|
<a name="line-798"></a>
|
|
<a name="line-799"></a>
|
|
<a name="line-800"></a> <span class='hs-comment'>-------------------------</span>
|
|
<a name="line-801"></a> <span class='hs-comment'>--[ Directory reading ]--</span>
|
|
<a name="line-802"></a> <span class='hs-comment'>-------------------------</span>
|
|
<a name="line-803"></a>
|
|
<a name="line-804"></a>
|
|
<a name="line-805"></a><a name="getDirsFiles"></a><span class='hs-comment'>-- |Gets all filenames of the given directory. This excludes "." and "..".</span>
|
|
<a name="line-806"></a><span class='hs-comment'>-- This version does not follow symbolic links.</span>
|
|
<a name="line-807"></a><span class='hs-comment'>--</span>
|
|
<a name="line-808"></a><span class='hs-comment'>-- Throws:</span>
|
|
<a name="line-809"></a><span class='hs-comment'>--</span>
|
|
<a name="line-810"></a><span class='hs-comment'>-- - `NoSuchThing` if directory does not exist</span>
|
|
<a name="line-811"></a><span class='hs-comment'>-- - `InappropriateType` if file type is wrong (file)</span>
|
|
<a name="line-812"></a><span class='hs-comment'>-- - `InappropriateType` if file type is wrong (symlink to file)</span>
|
|
<a name="line-813"></a><span class='hs-comment'>-- - `InappropriateType` if file type is wrong (symlink to dir)</span>
|
|
<a name="line-814"></a><span class='hs-comment'>-- - `PermissionDenied` if directory cannot be opened</span>
|
|
<a name="line-815"></a><span class='hs-definition'>getDirsFiles</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-comment'>-- ^ dir to read</span>
|
|
<a name="line-816"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span><span class='hs-keyglyph'>]</span>
|
|
<a name="line-817"></a><span class='hs-definition'>getDirsFiles</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span>
|
|
<a name="line-818"></a> <span class='hs-varid'>withAbsPath</span> <span class='hs-varid'>p</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>fp</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
|
|
<a name="line-819"></a> <span class='hs-varid'>fd</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>openFd</span> <span class='hs-varid'>fp</span> <span class='hs-conid'>SPI</span><span class='hs-varop'>.</span><span class='hs-conid'>ReadOnly</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SPDF</span><span class='hs-varop'>.</span><span class='hs-varid'>oNofollow</span><span class='hs-keyglyph'>]</span> <span class='hs-conid'>Nothing</span>
|
|
<a name="line-820"></a> <span class='hs-varid'>return</span>
|
|
<a name="line-821"></a> <span class='hs-varop'>.</span> <span class='hs-varid'>catMaybes</span>
|
|
<a name="line-822"></a> <span class='hs-varop'>.</span> <span class='hs-varid'>fmap</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varop'></></span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span> <span class='hs-varop'><$></span> <span class='hs-layout'>(</span><span class='hs-varid'>parseMaybe</span> <span class='hs-varop'>.</span> <span class='hs-varid'>snd</span> <span class='hs-varop'>$</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
|
|
<a name="line-823"></a> <span class='hs-varop'>=<<</span> <span class='hs-varid'>getDirectoryContents'</span> <span class='hs-varid'>fd</span>
|
|
<a name="line-824"></a> <span class='hs-keyword'>where</span>
|
|
<a name="line-825"></a> <span class='hs-varid'>parseMaybe</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>Path</span> <span class='hs-conid'>Fn</span><span class='hs-layout'>)</span>
|
|
<a name="line-826"></a> <span class='hs-varid'>parseMaybe</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>parseFn</span>
|
|
<a name="line-827"></a>
|
|
<a name="line-828"></a>
|
|
<a name="line-829"></a>
|
|
<a name="line-830"></a>
|
|
<a name="line-831"></a> <span class='hs-comment'>---------------------------</span>
|
|
<a name="line-832"></a> <span class='hs-comment'>--[ FileType operations ]--</span>
|
|
<a name="line-833"></a> <span class='hs-comment'>---------------------------</span>
|
|
<a name="line-834"></a>
|
|
<a name="line-835"></a>
|
|
<a name="line-836"></a><a name="getFileType"></a><span class='hs-comment'>-- |Get the file type of the file located at the given path. Does</span>
|
|
<a name="line-837"></a><span class='hs-comment'>-- not follow symbolic links.</span>
|
|
<a name="line-838"></a><span class='hs-comment'>--</span>
|
|
<a name="line-839"></a><span class='hs-comment'>-- Throws:</span>
|
|
<a name="line-840"></a><span class='hs-comment'>--</span>
|
|
<a name="line-841"></a><span class='hs-comment'>-- - `NoSuchThing` if the file does not exist</span>
|
|
<a name="line-842"></a><span class='hs-comment'>-- - `PermissionDenied` if any part of the path is not accessible</span>
|
|
<a name="line-843"></a><span class='hs-definition'>getFileType</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>FileType</span>
|
|
<a name="line-844"></a><span class='hs-definition'>getFileType</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
|
|
<a name="line-845"></a> <span class='hs-varid'>fs</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>PF</span><span class='hs-varop'>.</span><span class='hs-varid'>getSymbolicLinkStatus</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromAbs</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span>
|
|
<a name="line-846"></a> <span class='hs-varid'>decide</span> <span class='hs-varid'>fs</span>
|
|
<a name="line-847"></a> <span class='hs-keyword'>where</span>
|
|
<a name="line-848"></a> <span class='hs-varid'>decide</span> <span class='hs-varid'>fs</span>
|
|
<a name="line-849"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>PF</span><span class='hs-varop'>.</span><span class='hs-varid'>isDirectory</span> <span class='hs-varid'>fs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>Directory</span>
|
|
<a name="line-850"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>PF</span><span class='hs-varop'>.</span><span class='hs-varid'>isRegularFile</span> <span class='hs-varid'>fs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>RegularFile</span>
|
|
<a name="line-851"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>PF</span><span class='hs-varop'>.</span><span class='hs-varid'>isSymbolicLink</span> <span class='hs-varid'>fs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>SymbolicLink</span>
|
|
<a name="line-852"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>PF</span><span class='hs-varop'>.</span><span class='hs-varid'>isBlockDevice</span> <span class='hs-varid'>fs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>BlockDevice</span>
|
|
<a name="line-853"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>PF</span><span class='hs-varop'>.</span><span class='hs-varid'>isCharacterDevice</span> <span class='hs-varid'>fs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>CharacterDevice</span>
|
|
<a name="line-854"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>PF</span><span class='hs-varop'>.</span><span class='hs-varid'>isNamedPipe</span> <span class='hs-varid'>fs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>NamedPipe</span>
|
|
<a name="line-855"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>PF</span><span class='hs-varop'>.</span><span class='hs-varid'>isSocket</span> <span class='hs-varid'>fs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>Socket</span>
|
|
<a name="line-856"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ioError</span> <span class='hs-varop'>$</span> <span class='hs-varid'>userError</span> <span class='hs-str'>"No filetype?!"</span>
|
|
<a name="line-857"></a>
|
|
<a name="line-858"></a>
|
|
<a name="line-859"></a>
|
|
<a name="line-860"></a> <span class='hs-comment'>--------------</span>
|
|
<a name="line-861"></a> <span class='hs-comment'>--[ Others ]--</span>
|
|
<a name="line-862"></a> <span class='hs-comment'>--------------</span>
|
|
<a name="line-863"></a>
|
|
<a name="line-864"></a>
|
|
<a name="line-865"></a>
|
|
<a name="line-866"></a><a name="canonicalizePath"></a><span class='hs-comment'>-- |Applies `realpath` on the given absolute path.</span>
|
|
<a name="line-867"></a><span class='hs-comment'>--</span>
|
|
<a name="line-868"></a><span class='hs-comment'>-- Throws:</span>
|
|
<a name="line-869"></a><span class='hs-comment'>--</span>
|
|
<a name="line-870"></a><span class='hs-comment'>-- - `NoSuchThing` if the file at the given path does not exist</span>
|
|
<a name="line-871"></a><span class='hs-comment'>-- - `NoSuchThing` if the symlink is broken</span>
|
|
<a name="line-872"></a><span class='hs-definition'>canonicalizePath</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Path</span> <span class='hs-conid'>Abs</span><span class='hs-layout'>)</span>
|
|
<a name="line-873"></a><span class='hs-definition'>canonicalizePath</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkPath</span> <span class='hs-varid'>l</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
|
|
<a name="line-874"></a> <span class='hs-varid'>nl</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>SPDT</span><span class='hs-varop'>.</span><span class='hs-varid'>realpath</span> <span class='hs-varid'>l</span>
|
|
<a name="line-875"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>MkPath</span> <span class='hs-varid'>nl</span>
|
|
</pre></body>
|
|
</html>
|