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<title>src/Darcs/Commands/GZCRCs.lhs</title>
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% Copyright (C) 2009 Ganesh Sittampalam
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\subsection{darcs gzcrcs}
\darcsCommand{gzcrcs}
\begin{code}
<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE CPP #-}</span>
<a name="line-2"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Commands</span><span class='hs-varop'>.</span><span class='hs-conid'>GZCRCs</span> <span class='hs-layout'>(</span> <span class='hs-varid'>gzcrcs</span><span class='hs-layout'>,</span> <span class='hs-varid'>doCRCWarnings</span> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-3"></a>
<a name="line-4"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Arrow</span> <span class='hs-layout'>(</span> <span class='hs-varid'>first</span> <span class='hs-layout'>)</span>
<a name="line-5"></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-layout'>(</span> <span class='hs-varid'>when</span><span class='hs-layout'>,</span> <span class='hs-varid'>unless</span> <span class='hs-layout'>)</span>
<a name="line-6"></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'>Trans</span> <span class='hs-layout'>(</span> <span class='hs-varid'>liftIO</span> <span class='hs-layout'>)</span>
<a name="line-7"></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'>Writer</span> <span class='hs-layout'>(</span> <span class='hs-varid'>runWriterT</span><span class='hs-layout'>,</span> <span class='hs-varid'>tell</span> <span class='hs-layout'>)</span>
<a name="line-8"></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'>intersperse</span> <span class='hs-layout'>)</span>
<a name="line-9"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Monoid</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Any</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'>Sum</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-10"></a>
<a name="line-11"></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>
<a name="line-12"></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-13"></a>
<a name="line-14"></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'>doesFileExist</span><span class='hs-layout'>,</span> <span class='hs-varid'>doesDirectoryExist</span> <span class='hs-layout'>)</span>
<a name="line-15"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Exit</span> <span class='hs-layout'>(</span> <span class='hs-conid'>ExitCode</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>exitWith</span> <span class='hs-layout'>)</span>
<a name="line-16"></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-layout'>(</span> <span class='hs-varid'>hPutStr</span><span class='hs-layout'>,</span> <span class='hs-varid'>hPutStrLn</span><span class='hs-layout'>,</span> <span class='hs-varid'>stderr</span> <span class='hs-layout'>)</span>
<a name="line-17"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>IORef</span> <span class='hs-layout'>(</span> <span class='hs-varid'>newIORef</span><span class='hs-layout'>,</span> <span class='hs-varid'>readIORef</span><span class='hs-layout'>,</span> <span class='hs-varid'>writeIORef</span> <span class='hs-layout'>)</span>
<a name="line-18"></a>
<a name="line-19"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Commands</span> <span class='hs-layout'>(</span> <span class='hs-conid'>DarcsCommand</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>nodefaults</span> <span class='hs-layout'>)</span>
<a name="line-20"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Arguments</span> <span class='hs-layout'>(</span> <span class='hs-conid'>DarcsFlag</span><span class='hs-layout'>(</span> <span class='hs-conid'>Quiet</span><span class='hs-layout'>,</span> <span class='hs-conid'>Verbose</span><span class='hs-layout'>,</span> <span class='hs-conid'>Check</span><span class='hs-layout'>,</span> <span class='hs-conid'>Repair</span><span class='hs-layout'>,</span> <span class='hs-conid'>JustThisRepo</span> <span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-21"></a> <span class='hs-varid'>checkOrRepair</span><span class='hs-layout'>,</span> <span class='hs-varid'>workingRepoDir</span><span class='hs-layout'>,</span> <span class='hs-varid'>justThisRepo</span>
<a name="line-22"></a> <span class='hs-layout'>)</span>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Repository</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Repository</span><span class='hs-layout'>,</span> <span class='hs-varid'>amInRepository</span><span class='hs-layout'>,</span> <span class='hs-varid'>withRepository</span> <span class='hs-layout'>)</span>
<a name="line-24"></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-layout'>(</span> <span class='hs-conid'>RepoPatch</span> <span class='hs-layout'>)</span>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Printer</span> <span class='hs-layout'>(</span> <span class='hs-varid'>putDocLn</span><span class='hs-layout'>,</span> <span class='hs-varid'>text</span> <span class='hs-layout'>)</span>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>ByteStringUtils</span> <span class='hs-layout'>(</span> <span class='hs-varid'>isGZFile</span> <span class='hs-layout'>)</span>
<a name="line-27"></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'>gzWriteAtomicFilePSs</span> <span class='hs-layout'>)</span>
<a name="line-28"></a>
<a name="line-29"></a><span class='hs-comment'>-- This command needs access beyond the normal repository APIs (to</span>
<a name="line-30"></a><span class='hs-comment'>-- get at the caches and inspect them directly)</span>
<a name="line-31"></a><span class='hs-comment'>-- Could move the relevant code into Darcs.Repository modules</span>
<a name="line-32"></a><span class='hs-comment'>-- but it doesn't really seem worth it.</span>
<a name="line-33"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Repository</span><span class='hs-varop'>.</span><span class='hs-conid'>InternalTypes</span> <span class='hs-layout'>(</span> <span class='hs-varid'>extractCache</span> <span class='hs-layout'>)</span>
<a name="line-34"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Repository</span><span class='hs-varop'>.</span><span class='hs-conid'>Cache</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Cache</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>writable</span><span class='hs-layout'>,</span> <span class='hs-varid'>isthisrepo</span><span class='hs-layout'>,</span> <span class='hs-varid'>hashedFilePath</span><span class='hs-layout'>,</span> <span class='hs-varid'>allHashedDirs</span> <span class='hs-layout'>)</span>
<a name="line-35"></a>
<a name="line-36"></a>
<a name="line-37"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Global</span> <span class='hs-layout'>(</span> <span class='hs-varid'>getCRCWarnings</span><span class='hs-layout'>,</span> <span class='hs-varid'>resetCRCWarnings</span> <span class='hs-layout'>)</span>
<a name="line-38"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>ByteStringUtils</span> <span class='hs-layout'>(</span> <span class='hs-varid'>gzDecompress</span> <span class='hs-layout'>)</span>
<a name="line-39"></a>
<a name="line-40"></a><span class='hs-cpp'>#include "gadts.h"</span>
<a name="line-41"></a>
<a name="line-42"></a><a name="gzcrcsDescription"></a><span class='hs-definition'>gzcrcsDescription</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span>
<a name="line-43"></a><span class='hs-definition'>gzcrcsDescription</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"Check or repair the CRCs of compressed files in the repository."</span>
<a name="line-44"></a>
<a name="line-45"></a><a name="gzcrcsHelp"></a><span class='hs-definition'>gzcrcsHelp</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span>
<a name="line-46"></a><span class='hs-definition'>gzcrcsHelp</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>formatText</span>
<a name="line-47"></a> <span class='hs-keyglyph'>[</span>
<a name="line-48"></a> <span class='hs-str'>"Versions of darcs >=1.0.4 and <2.2.0 had a bug that caused compressed files "</span> <span class='hs-varop'>++</span>
<a name="line-49"></a> <span class='hs-str'>"with bad CRCs (but valid data) to be written out. CRCs were not checked on "</span> <span class='hs-varop'>++</span>
<a name="line-50"></a> <span class='hs-str'>"reading, so this bug wasn't noticed."</span><span class='hs-layout'>,</span>
<a name="line-51"></a> <span class='hs-str'>"This command inspects your repository for this corruption and optionally repairs it."</span><span class='hs-layout'>,</span>
<a name="line-52"></a> <span class='hs-str'>"By default it also does this for any caches you have configured and any other "</span> <span class='hs-varop'>++</span>
<a name="line-53"></a> <span class='hs-str'>"local repositories listed as sources of patches for this one, perhaps because of a "</span> <span class='hs-varop'>++</span>
<a name="line-54"></a> <span class='hs-str'>"lazy get. You can limit the scope to just the current repo with the --just-this-repo "</span> <span class='hs-varop'>++</span>
<a name="line-55"></a> <span class='hs-str'>"flag."</span><span class='hs-layout'>,</span>
<a name="line-56"></a> <span class='hs-str'>"Note that readonly caches, or other repositories listed as sources, "</span> <span class='hs-varop'>++</span>
<a name="line-57"></a> <span class='hs-str'>"will be checked but not repaired. Also, this command will abort if it encounters "</span> <span class='hs-varop'>++</span>
<a name="line-58"></a> <span class='hs-str'>"any non-CRC corruption in compressed files."</span><span class='hs-layout'>,</span>
<a name="line-59"></a> <span class='hs-str'>"You may wish to also run 'darcs check --complete' before repairing the corruption. "</span> <span class='hs-varop'>++</span>
<a name="line-60"></a> <span class='hs-str'>"This is not done automatically because it might result in needing to fetch extra "</span> <span class='hs-varop'>++</span>
<a name="line-61"></a> <span class='hs-str'>"patches if the repository is lazy."</span><span class='hs-layout'>,</span>
<a name="line-62"></a> <span class='hs-str'>"If there are any other problems with your repository, you can still repair the CRCs, "</span> <span class='hs-varop'>++</span>
<a name="line-63"></a> <span class='hs-str'>"but you are advised to first make a backup copy in case the CRC errors are actually "</span> <span class='hs-varop'>++</span>
<a name="line-64"></a> <span class='hs-str'>"caused by bad data and the old CRCs might be useful in recovering that data."</span><span class='hs-layout'>,</span>
<a name="line-65"></a> <span class='hs-str'>"If you were warned about CRC errors during an operation involving another repository, "</span> <span class='hs-varop'>++</span>
<a name="line-66"></a> <span class='hs-str'>"then it is possible that the other repository contains the corrupt CRCs, so you "</span> <span class='hs-varop'>++</span>
<a name="line-67"></a> <span class='hs-str'>"should arrange for that repository to also be checked/repaired."</span>
<a name="line-68"></a> <span class='hs-keyglyph'>]</span>
<a name="line-69"></a>
<a name="line-70"></a><a name="formatText"></a><span class='hs-definition'>formatText</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-71"></a><span class='hs-definition'>formatText</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unlines</span> <span class='hs-varop'>.</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>.</span> <span class='hs-varid'>intersperse</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>""</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>unwords</span> <span class='hs-varop'>.</span> <span class='hs-varid'>para</span> <span class='hs-num'>80</span> <span class='hs-varop'>.</span> <span class='hs-varid'>words</span><span class='hs-layout'>)</span>
<a name="line-72"></a>
<a name="line-73"></a><a name="para"></a><span class='hs-comment'>-- |Take a list of words and split it up so that each chunk fits into the specified width</span>
<a name="line-74"></a><span class='hs-comment'>-- when spaces are included. Any words longer than the specified width end up in a chunk</span>
<a name="line-75"></a><span class='hs-comment'>-- of their own.</span>
<a name="line-76"></a><span class='hs-definition'>para</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></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-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</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-keyglyph'>]</span><span class='hs-keyglyph'>]</span>
<a name="line-77"></a><span class='hs-definition'>para</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>para'</span>
<a name="line-78"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>para'</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-79"></a> <span class='hs-varid'>para'</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>uncurry</span> <span class='hs-layout'>(</span><span class='hs-conop'>:</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>para''</span> <span class='hs-varid'>w</span> <span class='hs-varid'>xs</span>
<a name="line-80"></a> <span class='hs-varid'>para''</span> <span class='hs-varid'>r</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>w</span> <span class='hs-varop'>==</span> <span class='hs-varid'>r</span> <span class='hs-varop'>||</span> <span class='hs-varid'>length</span> <span class='hs-varid'>x</span> <span class='hs-varop'><</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>first</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>para''</span> <span class='hs-layout'>(</span><span class='hs-varid'>r</span> <span class='hs-comment'>-</span> <span class='hs-varid'>length</span> <span class='hs-varid'>x</span> <span class='hs-comment'>-</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span>
<a name="line-81"></a> <span class='hs-varid'>para''</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>[]</span><span class='hs-layout'>,</span> <span class='hs-varid'>para'</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-82"></a>
<a name="line-83"></a><a name="doCRCWarnings"></a><span class='hs-comment'>-- |This is designed for use in an atexit handler, e.g. in Darcs.RunCommand</span>
<a name="line-84"></a><span class='hs-definition'>doCRCWarnings</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-85"></a><span class='hs-definition'>doCRCWarnings</span> <span class='hs-varid'>verbose</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-86"></a> <span class='hs-varid'>files</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getCRCWarnings</span>
<a name="line-87"></a> <span class='hs-varid'>resetCRCWarnings</span>
<a name="line-88"></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-varid'>null</span> <span class='hs-varop'>$</span> <span class='hs-varid'>files</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-89"></a> <span class='hs-varid'>hPutStr</span> <span class='hs-varid'>stderr</span> <span class='hs-varop'>.</span> <span class='hs-varid'>formatText</span> <span class='hs-varop'>$</span>
<a name="line-90"></a> <span class='hs-keyglyph'>[</span><span class='hs-str'>""</span><span class='hs-layout'>,</span>
<a name="line-91"></a> <span class='hs-str'>"Warning: CRC errors found. These are probably harmless but should "</span> <span class='hs-varop'>++</span>
<a name="line-92"></a> <span class='hs-str'>"be repaired. See 'darcs gzcrcs --help' for more information."</span><span class='hs-layout'>,</span>
<a name="line-93"></a> <span class='hs-str'>""</span><span class='hs-keyglyph'>]</span>
<a name="line-94"></a> <span class='hs-varid'>when</span> <span class='hs-varid'>verbose</span> <span class='hs-varop'>$</span> <span class='hs-varid'>hPutStrLn</span> <span class='hs-varid'>stderr</span> <span class='hs-varop'>$</span> <span class='hs-varid'>unlines</span> <span class='hs-layout'>(</span><span class='hs-str'>"The following corrupt files were found:"</span><span class='hs-conop'>:</span><span class='hs-varid'>files</span><span class='hs-layout'>)</span>
<a name="line-95"></a>
<a name="line-96"></a><a name="gzcrcs"></a><span class='hs-definition'>gzcrcs</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DarcsCommand</span>
<a name="line-97"></a><span class='hs-definition'>gzcrcs</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DarcsCommand</span> <span class='hs-layout'>{</span><span class='hs-varid'>commandName</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"gzcrcs"</span><span class='hs-layout'>,</span>
<a name="line-98"></a> <span class='hs-varid'>commandHelp</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>gzcrcsHelp</span><span class='hs-layout'>,</span>
<a name="line-99"></a> <span class='hs-varid'>commandDescription</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>gzcrcsDescription</span><span class='hs-layout'>,</span>
<a name="line-100"></a> <span class='hs-varid'>commandExtraArgs</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span>
<a name="line-101"></a> <span class='hs-varid'>commandExtraArgHelp</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span><span class='hs-layout'>,</span>
<a name="line-102"></a> <span class='hs-varid'>commandCommand</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>gzcrcsCmd</span><span class='hs-layout'>,</span>
<a name="line-103"></a> <span class='hs-varid'>commandPrereq</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>amInRepository</span><span class='hs-layout'>,</span>
<a name="line-104"></a> <span class='hs-varid'>commandGetArgPossibilities</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-105"></a> <span class='hs-varid'>commandArgdefaults</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nodefaults</span><span class='hs-layout'>,</span>
<a name="line-106"></a> <span class='hs-varid'>commandAdvancedOptions</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span><span class='hs-layout'>,</span>
<a name="line-107"></a> <span class='hs-varid'>commandBasicOptions</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>checkOrRepair</span><span class='hs-layout'>,</span>
<a name="line-108"></a> <span class='hs-varid'>justThisRepo</span><span class='hs-layout'>,</span>
<a name="line-109"></a> <span class='hs-varid'>workingRepoDir</span>
<a name="line-110"></a> <span class='hs-keyglyph'>]</span><span class='hs-layout'>}</span>
<a name="line-111"></a>
<a name="line-112"></a><a name="gzcrcsCmd"></a><span class='hs-definition'>gzcrcsCmd</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>DarcsFlag</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-113"></a><span class='hs-definition'>gzcrcsCmd</span> <span class='hs-varid'>opts</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Check</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>opts</span> <span class='hs-varop'>||</span> <span class='hs-conid'>Repair</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>opts</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withRepository</span> <span class='hs-varid'>opts</span> <span class='hs-layout'>(</span><span class='hs-varid'>gzcrcs'</span> <span class='hs-varid'>opts</span><span class='hs-layout'>)</span>
<a name="line-114"></a><span class='hs-definition'>gzcrcsCmd</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"You must specify --check or --repair for gzcrcs"</span>
<a name="line-115"></a>
<a name="line-116"></a><a name="gzcrcs'"></a><span class='hs-definition'>gzcrcs'</span>
<a name="line-117"></a> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>RepoPatch</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>DarcsFlag</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Repository</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>r</span> <span class='hs-varid'>u</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-118"></a><span class='hs-definition'>gzcrcs'</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>repo</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-119"></a> <span class='hs-keyword'>let</span> <span class='hs-conid'>Ca</span> <span class='hs-varid'>locs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>extractCache</span> <span class='hs-varid'>repo</span>
<a name="line-120"></a> <span class='hs-comment'>-- Somewhat ugly IORef use here because it's convenient, would be nicer</span>
<a name="line-121"></a> <span class='hs-comment'>-- to pre-filter the list of locs to check and then decide whether to</span>
<a name="line-122"></a> <span class='hs-comment'>-- print the message up front.</span>
<a name="line-123"></a> <span class='hs-varid'>warnRelatedRepos</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newIORef</span> <span class='hs-layout'>(</span><span class='hs-conid'>JustThisRepo</span> <span class='hs-varop'>`notElem`</span> <span class='hs-varid'>opts</span><span class='hs-layout'>)</span>
<a name="line-124"></a> <span class='hs-layout'>(</span><span class='hs-conid'>()</span><span class='hs-layout'>,</span> <span class='hs-conid'>Any</span> <span class='hs-varid'>checkFailed</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>runWriterT</span> <span class='hs-varop'>$</span> <span class='hs-varid'>flip</span> <span class='hs-varid'>mapM_</span> <span class='hs-varid'>locs</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>loc</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-125"></a> <span class='hs-varid'>unless</span> <span class='hs-layout'>(</span><span class='hs-conid'>JustThisRepo</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>opts</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-varid'>isthisrepo</span> <span class='hs-varid'>loc</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-126"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>writable</span> <span class='hs-varid'>loc</span>
<a name="line-127"></a> <span class='hs-varid'>flip</span> <span class='hs-varid'>mapM_</span> <span class='hs-varid'>allHashedDirs</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>hdir</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-128"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>dir</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>hashedFilePath</span> <span class='hs-varid'>loc</span> <span class='hs-varid'>hdir</span> <span class='hs-str'>""</span>
<a name="line-129"></a> <span class='hs-varid'>exists</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>doesDirectoryExist</span> <span class='hs-varid'>dir</span>
<a name="line-130"></a> <span class='hs-varid'>when</span> <span class='hs-varid'>exists</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-131"></a> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-132"></a> <span class='hs-varid'>warn</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readIORef</span> <span class='hs-varid'>warnRelatedRepos</span>
<a name="line-133"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>warn</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-varid'>isthisrepo</span> <span class='hs-varid'>loc</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-134"></a> <span class='hs-varid'>writeIORef</span> <span class='hs-varid'>warnRelatedRepos</span> <span class='hs-conid'>False</span>
<a name="line-135"></a> <span class='hs-varid'>putInfo</span> <span class='hs-varop'>$</span> <span class='hs-varid'>text</span> <span class='hs-str'>"Also checking related repos and caches; use --just-this-repo to disable."</span>
<a name="line-136"></a> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>putInfo</span> <span class='hs-varop'>$</span> <span class='hs-varid'>text</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Checking "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>dir</span> <span class='hs-varop'>++</span> <span class='hs-layout'>(</span><span class='hs-keyword'>if</span> <span class='hs-varid'>w</span> <span class='hs-keyword'>then</span> <span class='hs-str'>""</span> <span class='hs-keyword'>else</span> <span class='hs-str'>" (readonly)"</span><span class='hs-layout'>)</span>
<a name="line-137"></a> <span class='hs-varid'>files</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>getDirectoryContents</span> <span class='hs-varid'>dir</span>
<a name="line-138"></a> <span class='hs-layout'>(</span><span class='hs-conid'>()</span><span class='hs-layout'>,</span> <span class='hs-conid'>Sum</span> <span class='hs-varid'>count</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>runWriterT</span> <span class='hs-varop'>$</span> <span class='hs-varid'>flip</span> <span class='hs-varid'>mapM_</span> <span class='hs-varid'>files</span> <span class='hs-varop'>$</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-139"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>fn</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>dir</span> <span class='hs-varop'>++</span> <span class='hs-varid'>file</span>
<a name="line-140"></a> <span class='hs-varid'>isfile</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>doesFileExist</span> <span class='hs-varid'>fn</span>
<a name="line-141"></a> <span class='hs-varid'>when</span> <span class='hs-varid'>isfile</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-142"></a> <span class='hs-varid'>gz</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>isGZFile</span> <span class='hs-varid'>fn</span>
<a name="line-143"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>gz</span> <span class='hs-keyword'>of</span>
<a name="line-144"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-145"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>len</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-146"></a> <span class='hs-varid'>contents</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>readFile</span> <span class='hs-varid'>fn</span>
<a name="line-147"></a> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>uncompressed</span><span class='hs-layout'>,</span> <span class='hs-varid'>isCorrupt</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>gzDecompress</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>len</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-conid'>BL</span><span class='hs-varop'>.</span><span class='hs-varid'>fromChunks</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>contents</span><span class='hs-keyglyph'>]</span>
<a name="line-148"></a> <span class='hs-varid'>when</span> <span class='hs-varid'>isCorrupt</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-149"></a> <span class='hs-varid'>tell</span> <span class='hs-layout'>(</span><span class='hs-conid'>Sum</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- count of files in current directory</span>
<a name="line-150"></a> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>putVerbose</span> <span class='hs-varop'>$</span> <span class='hs-varid'>text</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Corrupt: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>fn</span>
<a name="line-151"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varop'>&&</span> <span class='hs-conid'>Repair</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>opts</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>gzWriteAtomicFilePSs</span> <span class='hs-varid'>fn</span> <span class='hs-varid'>uncompressed</span>
<a name="line-152"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>count</span> <span class='hs-varop'>></span> <span class='hs-layout'>(</span><span class='hs-num'>0</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-153"></a> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>putInfo</span> <span class='hs-varop'>$</span> <span class='hs-varid'>text</span> <span class='hs-varop'>$</span>
<a name="line-154"></a> <span class='hs-str'>"Found "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>count</span> <span class='hs-varop'>++</span> <span class='hs-str'>" corrupt file"</span> <span class='hs-varop'>++</span> <span class='hs-layout'>(</span><span class='hs-keyword'>if</span> <span class='hs-varid'>count</span> <span class='hs-varop'>></span> <span class='hs-num'>1</span> <span class='hs-keyword'>then</span> <span class='hs-str'>"s"</span> <span class='hs-keyword'>else</span> <span class='hs-str'>""</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span>
<a name="line-155"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>if</span> <span class='hs-conid'>Repair</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>opts</span> <span class='hs-keyword'>then</span> <span class='hs-layout'>(</span><span class='hs-keyword'>if</span> <span class='hs-varid'>w</span> <span class='hs-keyword'>then</span> <span class='hs-str'>" (repaired)"</span> <span class='hs-keyword'>else</span> <span class='hs-str'>" (not repaired"</span><span class='hs-layout'>)</span> <span class='hs-keyword'>else</span> <span class='hs-str'>""</span><span class='hs-layout'>)</span>
<a name="line-156"></a> <span class='hs-varid'>tell</span> <span class='hs-layout'>(</span><span class='hs-conid'>Any</span> <span class='hs-conid'>True</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- something corrupt somewhere</span>
<a name="line-157"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-conid'>Check</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>opts</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>checkFailed</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>exitWith</span> <span class='hs-varop'>$</span> <span class='hs-conid'>ExitFailure</span> <span class='hs-num'>1</span>
<a name="line-158"></a>
<a name="line-159"></a> <span class='hs-keyword'>where</span>
<a name="line-160"></a> <span class='hs-varid'>putInfo</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>not</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Quiet</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>opts</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>putDocLn</span> <span class='hs-varid'>s</span>
<a name="line-161"></a> <span class='hs-varid'>putVerbose</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-conid'>Verbose</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>opts</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>putDocLn</span> <span class='hs-varid'>s</span>
<a name="line-162"></a>
</pre>\end{code}
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