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<pre><a name="line-1"></a><span class='hs-comment'>-- Copyright (C) 2005 David Roundy</span>
<a name="line-2"></a><span class='hs-comment'>--</span>
<a name="line-3"></a><span class='hs-comment'>-- This program is free software; you can redistribute it and/or modify</span>
<a name="line-4"></a><span class='hs-comment'>-- it under the terms of the GNU General Public License as published by</span>
<a name="line-5"></a><span class='hs-comment'>-- the Free Software Foundation; either version 2, or (at your option)</span>
<a name="line-6"></a><span class='hs-comment'>-- any later version.</span>
<a name="line-7"></a><span class='hs-comment'>--</span>
<a name="line-8"></a><span class='hs-comment'>-- This program is distributed in the hope that it will be useful,</span>
<a name="line-9"></a><span class='hs-comment'>-- but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="line-10"></a><span class='hs-comment'>-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="line-11"></a><span class='hs-comment'>-- GNU General Public License for more details.</span>
<a name="line-12"></a><span class='hs-comment'>--</span>
<a name="line-13"></a><span class='hs-comment'>-- You should have received a copy of the GNU General Public License</span>
<a name="line-14"></a><span class='hs-comment'>-- along with this program; see the file COPYING. If not, write to</span>
<a name="line-15"></a><span class='hs-comment'>-- the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,</span>
<a name="line-16"></a><span class='hs-comment'>-- Boston, MA 02110-1301, USA.</span>
<a name="line-17"></a>
<a name="line-18"></a><span class='hs-comment'>{-# OPTIONS_GHC -fglasgow-exts #-}</span>
<a name="line-19"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span> <span class='hs-layout'>(</span> <span class='hs-conid'>ReadableDirectory</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>WriteableDirectory</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-20"></a> <span class='hs-conid'>TolerantIO</span><span class='hs-layout'>,</span> <span class='hs-varid'>runTolerantly</span><span class='hs-layout'>,</span> <span class='hs-varid'>runSilently</span><span class='hs-layout'>,</span>
<a name="line-21"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-22"></a>
<a name="line-23"></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'>catch</span> <span class='hs-layout'>)</span>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Char</span> <span class='hs-layout'>(</span> <span class='hs-varid'>toLower</span> <span class='hs-layout'>)</span>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span> <span class='hs-layout'>(</span> <span class='hs-varid'>isSuffixOf</span> <span class='hs-layout'>)</span>
<a name="line-26"></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> <span class='hs-layout'>(</span> <span class='hs-varid'>isDoesNotExistError</span><span class='hs-layout'>,</span> <span class='hs-varid'>isPermissionError</span> <span class='hs-layout'>)</span>
<a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Exception</span> <span class='hs-layout'>(</span> <span class='hs-varid'>catch</span><span class='hs-layout'>,</span> <span class='hs-varid'>catchJust</span><span class='hs-layout'>,</span> <span class='hs-varid'>ioErrors</span> <span class='hs-layout'>)</span>
<a name="line-28"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-varop'>.</span><span class='hs-conid'>Error</span>
<a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Directory</span> <span class='hs-layout'>(</span> <span class='hs-varid'>getDirectoryContents</span><span class='hs-layout'>,</span> <span class='hs-varid'>createDirectory</span><span class='hs-layout'>,</span>
<a name="line-30"></a> <span class='hs-varid'>removeDirectory</span><span class='hs-layout'>,</span> <span class='hs-varid'>removeFile</span><span class='hs-layout'>,</span>
<a name="line-31"></a> <span class='hs-varid'>renameFile</span><span class='hs-layout'>,</span> <span class='hs-varid'>renameDirectory</span><span class='hs-layout'>,</span>
<a name="line-32"></a> <span class='hs-varid'>doesDirectoryExist</span><span class='hs-layout'>,</span> <span class='hs-varid'>doesFileExist</span><span class='hs-layout'>,</span>
<a name="line-33"></a> <span class='hs-layout'>)</span>
<a name="line-34"></a>
<a name="line-35"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>ByteStringUtils</span> <span class='hs-layout'>(</span> <span class='hs-varid'>linesPS</span><span class='hs-layout'>,</span> <span class='hs-varid'>unlinesPS</span><span class='hs-layout'>)</span>
<a name="line-36"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>B</span> <span class='hs-layout'>(</span><span class='hs-conid'>ByteString</span><span class='hs-layout'>,</span> <span class='hs-varid'>empty</span><span class='hs-layout'>,</span> <span class='hs-varid'>null</span><span class='hs-layout'>,</span> <span class='hs-varid'>readFile</span><span class='hs-layout'>,</span> <span class='hs-varid'>concat</span><span class='hs-layout'>)</span>
<a name="line-37"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Lazy</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>BL</span>
<a name="line-38"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Char8</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>BC</span> <span class='hs-layout'>(</span><span class='hs-varid'>unpack</span><span class='hs-layout'>,</span> <span class='hs-varid'>pack</span><span class='hs-layout'>)</span>
<a name="line-39"></a>
<a name="line-40"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span> <span class='hs-layout'>(</span> <span class='hs-varid'>withCurrentDirectory</span><span class='hs-layout'>,</span> <span class='hs-varid'>prettyException</span> <span class='hs-layout'>)</span>
<a name="line-41"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>External</span> <span class='hs-layout'>(</span> <span class='hs-varid'>backupByCopying</span><span class='hs-layout'>,</span> <span class='hs-varid'>backupByRenaming</span> <span class='hs-layout'>)</span>
<a name="line-42"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Printer</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Doc</span><span class='hs-layout'>,</span> <span class='hs-varid'>renderPS</span> <span class='hs-layout'>)</span>
<a name="line-43"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>FileName</span> <span class='hs-layout'>(</span> <span class='hs-conid'>FileName</span><span class='hs-layout'>,</span> <span class='hs-varid'>fn2fp</span><span class='hs-layout'>,</span> <span class='hs-varid'>fp2fn</span> <span class='hs-layout'>)</span>
<a name="line-44"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Lock</span> <span class='hs-layout'>(</span> <span class='hs-varid'>writeBinFile</span><span class='hs-layout'>,</span> <span class='hs-varid'>readBinFile</span><span class='hs-layout'>,</span> <span class='hs-varid'>writeAtomicFilePS</span> <span class='hs-layout'>)</span>
<a name="line-45"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Workaround</span> <span class='hs-layout'>(</span> <span class='hs-varid'>setExecutable</span> <span class='hs-layout'>)</span>
<a name="line-46"></a>
<a name="line-47"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Storage</span><span class='hs-varop'>.</span><span class='hs-conid'>Hashed</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>HSM</span>
<a name="line-48"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Storage</span><span class='hs-varop'>.</span><span class='hs-conid'>Hashed</span><span class='hs-varop'>.</span><span class='hs-conid'>AnchoredPath</span><span class='hs-layout'>(</span> <span class='hs-conid'>AnchoredPath</span><span class='hs-layout'>,</span> <span class='hs-varid'>floatPath</span> <span class='hs-layout'>)</span>
<a name="line-49"></a>
<a name="line-50"></a><a name="ReadableDirectory"></a><span class='hs-keyword'>class</span> <span class='hs-layout'>(</span><span class='hs-conid'>Functor</span> <span class='hs-varid'>m</span><span class='hs-layout'>,</span> <span class='hs-conid'>MonadPlus</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>ReadableDirectory</span> <span class='hs-varid'>m</span> <span class='hs-keyword'>where</span>
<a name="line-51"></a> <span class='hs-varid'>mDoesDirectoryExist</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>Bool</span>
<a name="line-52"></a> <span class='hs-varid'>mDoesFileExist</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>Bool</span>
<a name="line-53"></a> <span class='hs-varid'>mInCurrentDirectory</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-varid'>a</span>
<a name="line-54"></a> <span class='hs-varid'>mGetDirectoryContents</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>FileName</span><span class='hs-keyglyph'>]</span>
<a name="line-55"></a> <span class='hs-varid'>mReadBinFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>String</span>
<a name="line-56"></a> <span class='hs-varid'>mReadBinFile</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>liftM</span> <span class='hs-conid'>BC</span><span class='hs-varop'>.</span><span class='hs-varid'>unpack</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mReadFilePS</span> <span class='hs-varid'>f</span>
<a name="line-57"></a> <span class='hs-varid'>mReadFilePS</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
<a name="line-58"></a> <span class='hs-varid'>mReadFilePSs</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-keyglyph'>]</span>
<a name="line-59"></a> <span class='hs-varid'>mReadFilePSs</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>linesPS</span> <span class='hs-varop'>`liftM`</span> <span class='hs-varid'>mReadFilePS</span> <span class='hs-varid'>f</span>
<a name="line-60"></a>
<a name="line-61"></a><a name="WriteableDirectory"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>ReadableDirectory</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>WriteableDirectory</span> <span class='hs-varid'>m</span> <span class='hs-keyword'>where</span>
<a name="line-62"></a> <span class='hs-varid'>mWithCurrentDirectory</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-varid'>a</span>
<a name="line-63"></a> <span class='hs-varid'>mSetFileExecutable</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span>
<a name="line-64"></a> <span class='hs-varid'>mWriteBinFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span>
<a name="line-65"></a> <span class='hs-varid'>mWriteBinFile</span> <span class='hs-varid'>fn</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mWriteFilePS</span> <span class='hs-varid'>fn</span> <span class='hs-varop'>$</span> <span class='hs-conid'>BC</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-varid'>s</span>
<a name="line-66"></a> <span class='hs-varid'>mWriteFilePS</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span>
<a name="line-67"></a> <span class='hs-varid'>mWriteFilePSs</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span>
<a name="line-68"></a> <span class='hs-varid'>mWriteFilePSs</span> <span class='hs-varid'>f</span> <span class='hs-varid'>ss</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mWriteFilePS</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>unlinesPS</span> <span class='hs-varid'>ss</span><span class='hs-layout'>)</span>
<a name="line-69"></a> <span class='hs-varid'>mCreateDirectory</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span>
<a name="line-70"></a> <span class='hs-varid'>mRemoveDirectory</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span>
<a name="line-71"></a> <span class='hs-varid'>mWriteDoc</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span>
<a name="line-72"></a> <span class='hs-varid'>mWriteDoc</span> <span class='hs-varid'>f</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mWriteFilePS</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>renderPS</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span>
<a name="line-73"></a> <span class='hs-varid'>mCreateFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span>
<a name="line-74"></a> <span class='hs-varid'>mCreateFile</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mWriteFilePS</span> <span class='hs-varid'>f</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span>
<a name="line-75"></a> <span class='hs-varid'>mRemoveFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span>
<a name="line-76"></a> <span class='hs-varid'>mRename</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span>
<a name="line-77"></a> <span class='hs-varid'>mModifyFilePS</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span>
<a name="line-78"></a> <span class='hs-varid'>mModifyFilePS</span> <span class='hs-varid'>f</span> <span class='hs-varid'>j</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>ps</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mReadFilePS</span> <span class='hs-varid'>f</span>
<a name="line-79"></a> <span class='hs-varid'>ps'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>j</span> <span class='hs-varid'>ps</span>
<a name="line-80"></a> <span class='hs-varid'>mWriteFilePS</span> <span class='hs-varid'>f</span> <span class='hs-varid'>ps'</span>
<a name="line-81"></a> <span class='hs-varid'>mModifyFilePSs</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span>
<a name="line-82"></a> <span class='hs-varid'>mModifyFilePSs</span> <span class='hs-varid'>f</span> <span class='hs-varid'>j</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>ps</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mReadFilePSs</span> <span class='hs-varid'>f</span>
<a name="line-83"></a> <span class='hs-varid'>ps'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>j</span> <span class='hs-varid'>ps</span>
<a name="line-84"></a> <span class='hs-varid'>mWriteFilePSs</span> <span class='hs-varid'>f</span> <span class='hs-varid'>ps'</span>
<a name="line-85"></a>
<a name="line-86"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>ReadableDirectory</span> <span class='hs-conid'>IO</span> <span class='hs-keyword'>where</span>
<a name="line-87"></a> <span class='hs-varid'>mDoesDirectoryExist</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>doesDirectoryExist</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fn2fp</span>
<a name="line-88"></a> <span class='hs-varid'>mDoesFileExist</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>doesFileExist</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fn2fp</span>
<a name="line-89"></a> <span class='hs-varid'>mInCurrentDirectory</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withCurrentDirectory</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fn2fp</span>
<a name="line-90"></a> <span class='hs-varid'>mGetDirectoryContents</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>fp2fn</span> <span class='hs-varop'>`liftM`</span> <span class='hs-varid'>getDirectoryContents</span> <span class='hs-str'>"."</span>
<a name="line-91"></a> <span class='hs-varid'>mReadBinFile</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>readBinFile</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fn2fp</span>
<a name="line-92"></a> <span class='hs-varid'>mReadFilePS</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>readFile</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fn2fp</span>
<a name="line-93"></a>
<a name="line-94"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>WriteableDirectory</span> <span class='hs-conid'>IO</span> <span class='hs-keyword'>where</span>
<a name="line-95"></a> <span class='hs-varid'>mWithCurrentDirectory</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mInCurrentDirectory</span>
<a name="line-96"></a> <span class='hs-varid'>mSetFileExecutable</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>setExecutable</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fn2fp</span>
<a name="line-97"></a> <span class='hs-varid'>mWriteBinFile</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>writeBinFile</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fn2fp</span>
<a name="line-98"></a> <span class='hs-varid'>mWriteFilePS</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>writeAtomicFilePS</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fn2fp</span>
<a name="line-99"></a> <span class='hs-varid'>mCreateDirectory</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>createDirectory</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fn2fp</span>
<a name="line-100"></a> <span class='hs-varid'>mCreateFile</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>exf</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mDoesFileExist</span> <span class='hs-varid'>f</span>
<a name="line-101"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>exf</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>fail</span> <span class='hs-varop'>$</span> <span class='hs-str'>"File '"</span><span class='hs-varop'>++</span><span class='hs-varid'>fn2fp</span> <span class='hs-varid'>f</span><span class='hs-varop'>++</span><span class='hs-str'>"' already exists!"</span>
<a name="line-102"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>exd</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mDoesDirectoryExist</span> <span class='hs-varid'>f</span>
<a name="line-103"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>exd</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>fail</span> <span class='hs-varop'>$</span> <span class='hs-str'>"File '"</span><span class='hs-varop'>++</span><span class='hs-varid'>fn2fp</span> <span class='hs-varid'>f</span><span class='hs-varop'>++</span><span class='hs-str'>"' already exists!"</span>
<a name="line-104"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>mWriteFilePS</span> <span class='hs-varid'>f</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span>
<a name="line-105"></a> <span class='hs-varid'>mRemoveFile</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>fp</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varid'>f</span>
<a name="line-106"></a> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>readFile</span> <span class='hs-varid'>fp</span>
<a name="line-107"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>not</span> <span class='hs-varop'>$</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-108"></a> <span class='hs-varid'>fail</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Cannot remove non-empty file "</span><span class='hs-varop'>++</span><span class='hs-varid'>fp</span>
<a name="line-109"></a> <span class='hs-varid'>removeFile</span> <span class='hs-varid'>fp</span>
<a name="line-110"></a> <span class='hs-varid'>mRemoveDirectory</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>removeDirectory</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fn2fp</span>
<a name="line-111"></a> <span class='hs-varid'>mRename</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>catchJust</span> <span class='hs-varid'>ioErrors</span>
<a name="line-112"></a> <span class='hs-layout'>(</span><span class='hs-varid'>renameDirectory</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varop'>`mplus`</span> <span class='hs-varid'>renameFile</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-113"></a> <span class='hs-comment'>-- We need to catch does not exist errors, since older</span>
<a name="line-114"></a> <span class='hs-comment'>-- versions of darcs allowed users to rename nonexistent</span>
<a name="line-115"></a> <span class='hs-comment'>-- files. :(</span>
<a name="line-116"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>if</span> <span class='hs-varid'>isDoesNotExistError</span> <span class='hs-varid'>e</span>
<a name="line-117"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-118"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>ioError</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span>
<a name="line-119"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varid'>a</span>
<a name="line-120"></a> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varid'>b</span>
<a name="line-121"></a>
<a name="line-122"></a><a name="TolerantMonad"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>TolerantMonad</span> <span class='hs-varid'>m</span> <span class='hs-keyword'>where</span>
<a name="line-123"></a> <span class='hs-varid'>warning</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span>
<a name="line-124"></a> <span class='hs-varid'>runIO</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>m</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-125"></a> <span class='hs-varid'>runTM</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-varid'>m</span> <span class='hs-varid'>a</span>
<a name="line-126"></a>
<a name="line-127"></a><a name="TolerantIO"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>TolerantIO</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>TIO</span> <span class='hs-layout'>{</span> <span class='hs-varid'>runTolerantly</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span> <span class='hs-layout'>}</span>
<a name="line-128"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>TolerantMonad</span> <span class='hs-conid'>TolerantIO</span> <span class='hs-keyword'>where</span>
<a name="line-129"></a> <span class='hs-varid'>warning</span> <span class='hs-varid'>io</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>TIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>io</span> <span class='hs-varop'>`catch`</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>putStrLn</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Warning: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>prettyException</span> <span class='hs-varid'>e</span>
<a name="line-130"></a> <span class='hs-varid'>runIO</span> <span class='hs-layout'>(</span><span class='hs-conid'>TIO</span> <span class='hs-varid'>io</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>io</span>
<a name="line-131"></a> <span class='hs-varid'>runTM</span> <span class='hs-varid'>io</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>TIO</span> <span class='hs-varid'>io</span>
<a name="line-132"></a>
<a name="line-133"></a><a name="SilentIO"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>SilentIO</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SIO</span> <span class='hs-layout'>{</span> <span class='hs-varid'>runSilently</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span> <span class='hs-layout'>}</span>
<a name="line-134"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>TolerantMonad</span> <span class='hs-conid'>SilentIO</span> <span class='hs-keyword'>where</span>
<a name="line-135"></a> <span class='hs-varid'>warning</span> <span class='hs-varid'>io</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>io</span> <span class='hs-varop'>`catch`</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>
<a name="line-136"></a> <span class='hs-varid'>runIO</span> <span class='hs-layout'>(</span><span class='hs-conid'>SIO</span> <span class='hs-varid'>io</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>io</span>
<a name="line-137"></a> <span class='hs-varid'>runTM</span> <span class='hs-varid'>io</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SIO</span> <span class='hs-varid'>io</span>
<a name="line-138"></a>
<a name="line-139"></a><span class='hs-comment'>-- NOTE: The following instance declarations are duplicated merely to avoid</span>
<a name="line-140"></a><span class='hs-comment'>-- enabling -fallow-undecidable-instances. If we used</span>
<a name="line-141"></a><span class='hs-comment'>-- -fallow-undecidable-instances, we would write instead:</span>
<a name="line-142"></a>
<a name="line-143"></a><span class='hs-comment'>-- instance TolerantMonad m => Monad m where</span>
<a name="line-144"></a><span class='hs-comment'>-- ...</span>
<a name="line-145"></a>
<a name="line-146"></a><span class='hs-comment'>-- etc.</span>
<a name="line-147"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Functor</span> <span class='hs-conid'>TolerantIO</span> <span class='hs-keyword'>where</span>
<a name="line-148"></a> <span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>m</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>return</span> <span class='hs-varop'>.</span> <span class='hs-varid'>f</span>
<a name="line-149"></a>
<a name="line-150"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Monad</span> <span class='hs-conid'>TolerantIO</span> <span class='hs-keyword'>where</span>
<a name="line-151"></a> <span class='hs-varid'>f</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>g</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varop'>$</span> <span class='hs-varid'>runIO</span> <span class='hs-varid'>f</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>runIO</span> <span class='hs-varop'>.</span> <span class='hs-varid'>g</span>
<a name="line-152"></a> <span class='hs-varid'>f</span> <span class='hs-varop'>>></span> <span class='hs-varid'>g</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varop'>$</span> <span class='hs-varid'>runIO</span> <span class='hs-varid'>f</span> <span class='hs-varop'>>></span> <span class='hs-varid'>runIO</span> <span class='hs-varid'>g</span>
<a name="line-153"></a> <span class='hs-varid'>fail</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fail</span> <span class='hs-varid'>s</span>
<a name="line-154"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varop'>$</span> <span class='hs-varid'>return</span> <span class='hs-varid'>x</span>
<a name="line-155"></a>
<a name="line-156"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Functor</span> <span class='hs-conid'>SilentIO</span> <span class='hs-keyword'>where</span>
<a name="line-157"></a> <span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>m</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>return</span> <span class='hs-varop'>.</span> <span class='hs-varid'>f</span>
<a name="line-158"></a>
<a name="line-159"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Monad</span> <span class='hs-conid'>SilentIO</span> <span class='hs-keyword'>where</span>
<a name="line-160"></a> <span class='hs-varid'>f</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>g</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varop'>$</span> <span class='hs-varid'>runIO</span> <span class='hs-varid'>f</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>runIO</span> <span class='hs-varop'>.</span> <span class='hs-varid'>g</span>
<a name="line-161"></a> <span class='hs-varid'>f</span> <span class='hs-varop'>>></span> <span class='hs-varid'>g</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varop'>$</span> <span class='hs-varid'>runIO</span> <span class='hs-varid'>f</span> <span class='hs-varop'>>></span> <span class='hs-varid'>runIO</span> <span class='hs-varid'>g</span>
<a name="line-162"></a> <span class='hs-varid'>fail</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fail</span> <span class='hs-varid'>s</span>
<a name="line-163"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varop'>$</span> <span class='hs-varid'>return</span> <span class='hs-varid'>x</span>
<a name="line-164"></a>
<a name="line-165"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>MonadPlus</span> <span class='hs-conid'>TolerantIO</span> <span class='hs-keyword'>where</span>
<a name="line-166"></a> <span class='hs-varid'>mzero</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varid'>mzero</span>
<a name="line-167"></a> <span class='hs-varid'>mplus</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-layout'>(</span><span class='hs-varid'>mplus</span> <span class='hs-layout'>(</span><span class='hs-varid'>runIO</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>runIO</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-168"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>MonadPlus</span> <span class='hs-conid'>SilentIO</span> <span class='hs-keyword'>where</span>
<a name="line-169"></a> <span class='hs-varid'>mzero</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varid'>mzero</span>
<a name="line-170"></a> <span class='hs-varid'>mplus</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-layout'>(</span><span class='hs-varid'>mplus</span> <span class='hs-layout'>(</span><span class='hs-varid'>runIO</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>runIO</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-171"></a>
<a name="line-172"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>ReadableDirectory</span> <span class='hs-conid'>TolerantIO</span> <span class='hs-keyword'>where</span>
<a name="line-173"></a> <span class='hs-varid'>mDoesDirectoryExist</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mDoesDirectoryExist</span> <span class='hs-varid'>d</span>
<a name="line-174"></a> <span class='hs-varid'>mDoesFileExist</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mDoesFileExist</span> <span class='hs-varid'>f</span>
<a name="line-175"></a> <span class='hs-varid'>mInCurrentDirectory</span> <span class='hs-varid'>i</span> <span class='hs-varid'>j</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mInCurrentDirectory</span> <span class='hs-varid'>i</span> <span class='hs-layout'>(</span><span class='hs-varid'>runIO</span> <span class='hs-varid'>j</span><span class='hs-layout'>)</span>
<a name="line-176"></a> <span class='hs-varid'>mGetDirectoryContents</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varid'>mGetDirectoryContents</span>
<a name="line-177"></a> <span class='hs-varid'>mReadBinFile</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mReadBinFile</span> <span class='hs-varid'>f</span>
<a name="line-178"></a> <span class='hs-varid'>mReadFilePS</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mReadFilePS</span> <span class='hs-varid'>f</span>
<a name="line-179"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>ReadableDirectory</span> <span class='hs-conid'>SilentIO</span> <span class='hs-keyword'>where</span>
<a name="line-180"></a> <span class='hs-varid'>mDoesDirectoryExist</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mDoesDirectoryExist</span> <span class='hs-varid'>d</span>
<a name="line-181"></a> <span class='hs-varid'>mDoesFileExist</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mDoesFileExist</span> <span class='hs-varid'>f</span>
<a name="line-182"></a> <span class='hs-varid'>mInCurrentDirectory</span> <span class='hs-varid'>i</span> <span class='hs-varid'>j</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mInCurrentDirectory</span> <span class='hs-varid'>i</span> <span class='hs-layout'>(</span><span class='hs-varid'>runIO</span> <span class='hs-varid'>j</span><span class='hs-layout'>)</span>
<a name="line-183"></a> <span class='hs-varid'>mGetDirectoryContents</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varid'>mGetDirectoryContents</span>
<a name="line-184"></a> <span class='hs-varid'>mReadBinFile</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mReadBinFile</span> <span class='hs-varid'>f</span>
<a name="line-185"></a> <span class='hs-varid'>mReadFilePS</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTM</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mReadFilePS</span> <span class='hs-varid'>f</span>
<a name="line-186"></a>
<a name="line-187"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>WriteableDirectory</span> <span class='hs-conid'>TolerantIO</span> <span class='hs-keyword'>where</span>
<a name="line-188"></a> <span class='hs-varid'>mWithCurrentDirectory</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mInCurrentDirectory</span>
<a name="line-189"></a> <span class='hs-varid'>mSetFileExecutable</span> <span class='hs-varid'>f</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>warning</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mSetFileExecutable</span> <span class='hs-varid'>f</span> <span class='hs-varid'>e</span>
<a name="line-190"></a> <span class='hs-varid'>mWriteBinFile</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>warning</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mWriteBinFile</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span>
<a name="line-191"></a> <span class='hs-varid'>mWriteFilePS</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>warning</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mWriteFilePS</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span>
<a name="line-192"></a> <span class='hs-varid'>mCreateFile</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>warning</span> <span class='hs-varop'>$</span> <span class='hs-varid'>backup</span> <span class='hs-varid'>f</span> <span class='hs-varop'>>></span> <span class='hs-varid'>mWriteFilePS</span> <span class='hs-varid'>f</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span>
<a name="line-193"></a> <span class='hs-varid'>mCreateDirectory</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>warning</span> <span class='hs-varop'>$</span> <span class='hs-varid'>backup</span> <span class='hs-varid'>d</span> <span class='hs-varop'>>></span> <span class='hs-varid'>mCreateDirectory</span> <span class='hs-varid'>d</span>
<a name="line-194"></a> <span class='hs-varid'>mRemoveFile</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>warning</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mRemoveFile</span> <span class='hs-varid'>f</span>
<a name="line-195"></a> <span class='hs-varid'>mRemoveDirectory</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>warning</span> <span class='hs-varop'>$</span> <span class='hs-varid'>catchJust</span> <span class='hs-varid'>ioErrors</span>
<a name="line-196"></a> <span class='hs-layout'>(</span><span class='hs-varid'>mRemoveDirectory</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span>
<a name="line-197"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span>
<a name="line-198"></a> <span class='hs-keyword'>if</span> <span class='hs-str'>"(Directory not empty)"</span> <span class='hs-varop'>`isSuffixOf`</span> <span class='hs-varid'>show</span> <span class='hs-varid'>e</span>
<a name="line-199"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>ioError</span> <span class='hs-varop'>$</span> <span class='hs-varid'>userError</span> <span class='hs-varop'>$</span>
<a name="line-200"></a> <span class='hs-str'>"Not deleting "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varid'>d</span> <span class='hs-varop'>++</span> <span class='hs-str'>" because it is not empty."</span>
<a name="line-201"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>ioError</span> <span class='hs-varop'>$</span> <span class='hs-varid'>userError</span> <span class='hs-varop'>$</span>
<a name="line-202"></a> <span class='hs-str'>"Not deleting "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varid'>d</span> <span class='hs-varop'>++</span> <span class='hs-str'>" because:\n"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span>
<a name="line-203"></a> <span class='hs-varid'>mRename</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>warning</span> <span class='hs-varop'>$</span> <span class='hs-varid'>catchJust</span> <span class='hs-varid'>ioErrors</span>
<a name="line-204"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>let</span> <span class='hs-varid'>do_backup</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>toLower</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-varid'>map</span> <span class='hs-varid'>toLower</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-205"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>backupByCopying</span> <span class='hs-varid'>y</span> <span class='hs-comment'>-- avoid making the original vanish</span>
<a name="line-206"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>backupByRenaming</span> <span class='hs-varid'>y</span>
<a name="line-207"></a> <span class='hs-keyword'>in</span> <span class='hs-varid'>do_backup</span> <span class='hs-varop'>>></span> <span class='hs-varid'>mRename</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span>
<a name="line-208"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-conid'>()</span> <span class='hs-keyword'>of</span>
<a name="line-209"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isPermissionError</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>ioError</span> <span class='hs-varop'>$</span> <span class='hs-varid'>userError</span> <span class='hs-varop'>$</span>
<a name="line-210"></a> <span class='hs-varid'>couldNotRename</span> <span class='hs-varop'>++</span> <span class='hs-str'>"."</span>
<a name="line-211"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isDoesNotExistError</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>ioError</span> <span class='hs-varop'>$</span> <span class='hs-varid'>userError</span> <span class='hs-varop'>$</span>
<a name="line-212"></a> <span class='hs-varid'>couldNotRename</span> <span class='hs-varop'>++</span> <span class='hs-str'>" because "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>x</span> <span class='hs-varop'>++</span> <span class='hs-str'>" does not exist."</span>
<a name="line-213"></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-varid'>e</span>
<a name="line-214"></a> <span class='hs-layout'>)</span>
<a name="line-215"></a> <span class='hs-keyword'>where</span>
<a name="line-216"></a> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varid'>a</span>
<a name="line-217"></a> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varid'>b</span>
<a name="line-218"></a> <span class='hs-varid'>couldNotRename</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"Could not rename "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>x</span> <span class='hs-varop'>++</span> <span class='hs-str'>" to "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>y</span>
<a name="line-219"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>WriteableDirectory</span> <span class='hs-conid'>SilentIO</span> <span class='hs-keyword'>where</span>
<a name="line-220"></a> <span class='hs-varid'>mWithCurrentDirectory</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mInCurrentDirectory</span>
<a name="line-221"></a> <span class='hs-varid'>mSetFileExecutable</span> <span class='hs-varid'>f</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>warning</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mSetFileExecutable</span> <span class='hs-varid'>f</span> <span class='hs-varid'>e</span>
<a name="line-222"></a> <span class='hs-varid'>mWriteBinFile</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>warning</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mWriteBinFile</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span>
<a name="line-223"></a> <span class='hs-varid'>mWriteFilePS</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>warning</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mWriteFilePS</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span>
<a name="line-224"></a> <span class='hs-varid'>mCreateFile</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>warning</span> <span class='hs-varop'>$</span> <span class='hs-varid'>backup</span> <span class='hs-varid'>f</span> <span class='hs-varop'>>></span> <span class='hs-varid'>mWriteFilePS</span> <span class='hs-varid'>f</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span>
<a name="line-225"></a> <span class='hs-varid'>mCreateDirectory</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>warning</span> <span class='hs-varop'>$</span> <span class='hs-varid'>backup</span> <span class='hs-varid'>d</span> <span class='hs-varop'>>></span> <span class='hs-varid'>mCreateDirectory</span> <span class='hs-varid'>d</span>
<a name="line-226"></a> <span class='hs-varid'>mRemoveFile</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>warning</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mRemoveFile</span> <span class='hs-varid'>f</span>
<a name="line-227"></a> <span class='hs-varid'>mRemoveDirectory</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>warning</span> <span class='hs-varop'>$</span> <span class='hs-varid'>catchJust</span> <span class='hs-varid'>ioErrors</span>
<a name="line-228"></a> <span class='hs-layout'>(</span><span class='hs-varid'>mRemoveDirectory</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span>
<a name="line-229"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span>
<a name="line-230"></a> <span class='hs-keyword'>if</span> <span class='hs-str'>"(Directory not empty)"</span> <span class='hs-varop'>`isSuffixOf`</span> <span class='hs-varid'>show</span> <span class='hs-varid'>e</span>
<a name="line-231"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>ioError</span> <span class='hs-varop'>$</span> <span class='hs-varid'>userError</span> <span class='hs-varop'>$</span>
<a name="line-232"></a> <span class='hs-str'>"Not deleting "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varid'>d</span> <span class='hs-varop'>++</span> <span class='hs-str'>" because it is not empty."</span>
<a name="line-233"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>ioError</span> <span class='hs-varop'>$</span> <span class='hs-varid'>userError</span> <span class='hs-varop'>$</span>
<a name="line-234"></a> <span class='hs-str'>"Not deleting "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varid'>d</span> <span class='hs-varop'>++</span> <span class='hs-str'>" because:\n"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span>
<a name="line-235"></a> <span class='hs-varid'>mRename</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>warning</span> <span class='hs-varop'>$</span> <span class='hs-varid'>catchJust</span> <span class='hs-varid'>ioErrors</span>
<a name="line-236"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>let</span> <span class='hs-varid'>do_backup</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>toLower</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-varid'>map</span> <span class='hs-varid'>toLower</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-237"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>backupByCopying</span> <span class='hs-varid'>y</span> <span class='hs-comment'>-- avoid making the original vanish</span>
<a name="line-238"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>backupByRenaming</span> <span class='hs-varid'>y</span>
<a name="line-239"></a> <span class='hs-keyword'>in</span> <span class='hs-varid'>do_backup</span> <span class='hs-varop'>>></span> <span class='hs-varid'>mRename</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span>
<a name="line-240"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-conid'>()</span> <span class='hs-keyword'>of</span>
<a name="line-241"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isPermissionError</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>ioError</span> <span class='hs-varop'>$</span> <span class='hs-varid'>userError</span> <span class='hs-varop'>$</span>
<a name="line-242"></a> <span class='hs-varid'>couldNotRename</span> <span class='hs-varop'>++</span> <span class='hs-str'>"."</span>
<a name="line-243"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isDoesNotExistError</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>ioError</span> <span class='hs-varop'>$</span> <span class='hs-varid'>userError</span> <span class='hs-varop'>$</span>
<a name="line-244"></a> <span class='hs-varid'>couldNotRename</span> <span class='hs-varop'>++</span> <span class='hs-str'>" because "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>x</span> <span class='hs-varop'>++</span> <span class='hs-str'>" does not exist."</span>
<a name="line-245"></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-varid'>e</span>
<a name="line-246"></a> <span class='hs-layout'>)</span>
<a name="line-247"></a> <span class='hs-keyword'>where</span>
<a name="line-248"></a> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varid'>a</span>
<a name="line-249"></a> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varid'>b</span>
<a name="line-250"></a> <span class='hs-varid'>couldNotRename</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"Could not rename "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>x</span> <span class='hs-varop'>++</span> <span class='hs-str'>" to "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>y</span>
<a name="line-251"></a>
<a name="line-252"></a><a name="backup"></a><span class='hs-definition'>backup</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-253"></a><span class='hs-definition'>backup</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>backupByRenaming</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varid'>f</span>
<a name="line-254"></a>
<a name="line-255"></a><a name="floatFn"></a><span class='hs-definition'>floatFn</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>AnchoredPath</span>
<a name="line-256"></a><span class='hs-definition'>floatFn</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>floatPath</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fn2fp</span>
<a name="line-257"></a>
<a name="line-258"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>MonadPlus</span> <span class='hs-varid'>m</span><span class='hs-layout'>,</span> <span class='hs-conid'>MonadError</span> <span class='hs-varid'>e</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>ReadableDirectory</span> <span class='hs-layout'>(</span><span class='hs-conid'>HSM</span><span class='hs-varop'>.</span><span class='hs-conid'>TreeMonad</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-259"></a> <span class='hs-varid'>mDoesDirectoryExist</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>HSM</span><span class='hs-varop'>.</span><span class='hs-varid'>directoryExists</span> <span class='hs-layout'>(</span><span class='hs-varid'>floatFn</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span>
<a name="line-260"></a> <span class='hs-varid'>mDoesFileExist</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>HSM</span><span class='hs-varop'>.</span><span class='hs-varid'>fileExists</span> <span class='hs-layout'>(</span><span class='hs-varid'>floatFn</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-261"></a> <span class='hs-varid'>mInCurrentDirectory</span> <span class='hs-varid'>d</span> <span class='hs-varid'>action</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>HSM</span><span class='hs-varop'>.</span><span class='hs-varid'>withDirectory</span> <span class='hs-layout'>(</span><span class='hs-varid'>floatFn</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-varid'>action</span>
<a name="line-262"></a> <span class='hs-varid'>mGetDirectoryContents</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"get dir contents"</span>
<a name="line-263"></a> <span class='hs-varid'>mReadFilePS</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>HSM</span><span class='hs-varop'>.</span><span class='hs-varid'>readFile</span> <span class='hs-layout'>(</span><span class='hs-varid'>floatFn</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span>
<a name="line-264"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>concat</span> <span class='hs-layout'>(</span><span class='hs-conid'>BL</span><span class='hs-varop'>.</span><span class='hs-varid'>toChunks</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-265"></a>
<a name="line-266"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>Functor</span> <span class='hs-varid'>m</span><span class='hs-layout'>,</span> <span class='hs-conid'>MonadPlus</span> <span class='hs-varid'>m</span><span class='hs-layout'>,</span> <span class='hs-conid'>MonadError</span> <span class='hs-varid'>e</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>WriteableDirectory</span> <span class='hs-layout'>(</span><span class='hs-conid'>HSM</span><span class='hs-varop'>.</span><span class='hs-conid'>TreeMonad</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-267"></a> <span class='hs-varid'>mWithCurrentDirectory</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mInCurrentDirectory</span>
<a name="line-268"></a> <span class='hs-varid'>mSetFileExecutable</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-269"></a> <span class='hs-varid'>mWriteFilePS</span> <span class='hs-varid'>p</span> <span class='hs-varid'>ps</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>HSM</span><span class='hs-varop'>.</span><span class='hs-varid'>writeFile</span> <span class='hs-layout'>(</span><span class='hs-varid'>floatFn</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>BL</span><span class='hs-varop'>.</span><span class='hs-varid'>fromChunks</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>ps</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-270"></a> <span class='hs-varid'>mCreateDirectory</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>HSM</span><span class='hs-varop'>.</span><span class='hs-varid'>createDirectory</span> <span class='hs-layout'>(</span><span class='hs-varid'>floatFn</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span>
<a name="line-271"></a> <span class='hs-varid'>mRename</span> <span class='hs-varid'>from</span> <span class='hs-varid'>to</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>HSM</span><span class='hs-varop'>.</span><span class='hs-varid'>rename</span> <span class='hs-layout'>(</span><span class='hs-varid'>floatFn</span> <span class='hs-varid'>from</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>floatFn</span> <span class='hs-varid'>to</span><span class='hs-layout'>)</span>
<a name="line-272"></a> <span class='hs-varid'>mRemoveDirectory</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>HSM</span><span class='hs-varop'>.</span><span class='hs-varid'>unlink</span> <span class='hs-varop'>.</span> <span class='hs-varid'>floatFn</span>
<a name="line-273"></a> <span class='hs-varid'>mRemoveFile</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>HSM</span><span class='hs-varop'>.</span><span class='hs-varid'>unlink</span> <span class='hs-varop'>.</span> <span class='hs-varid'>floatFn</span>
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