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<title>src/Darcs/Commands/Util.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>-- Copyright (C) 2002-2004 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'>{-# LANGUAGE CPP #-}</span>
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<a name="line-20"></a><span class='hs-cpp'>#include "gadts.h"</span>
<a name="line-21"></a>
<a name="line-22"></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'>Util</span> <span class='hs-layout'>(</span> <span class='hs-varid'>announceFiles</span><span class='hs-layout'>,</span> <span class='hs-varid'>filterExistingFiles</span> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
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<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'>Arguments</span> <span class='hs-layout'>(</span> <span class='hs-conid'>DarcsFlag</span><span class='hs-layout'>(</span><span class='hs-conid'>LookForAdds</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-25"></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-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>RepoPath</span> <span class='hs-layout'>(</span> <span class='hs-conid'>SubPath</span><span class='hs-layout'>,</span> <span class='hs-varid'>toFilePath</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'>Repository</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Repository</span><span class='hs-layout'>,</span> <span class='hs-varid'>extractOptions</span><span class='hs-layout'>,</span> <span class='hs-varid'>readRecorded</span><span class='hs-layout'>,</span>
<a name="line-28"></a> <span class='hs-varid'>readUnrecorded</span> <span class='hs-layout'>)</span>
<a name="line-29"></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'>State</span> <span class='hs-layout'>(</span> <span class='hs-varid'>applyTreeFilter</span><span class='hs-layout'>,</span> <span class='hs-varid'>restrictBoring</span> <span class='hs-layout'>)</span>
<a name="line-30"></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'>Apply</span> <span class='hs-layout'>(</span> <span class='hs-conid'>ApplyState</span> <span class='hs-layout'>)</span>
<a name="line-31"></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-layout'>(</span> <span class='hs-varid'>floatPath</span><span class='hs-layout'>,</span> <span class='hs-varid'>readPlainTree</span> <span class='hs-layout'>)</span>
<a name="line-32"></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'>Tree</span><span class='hs-layout'>(</span> <span class='hs-conid'>Tree</span> <span class='hs-layout'>)</span>
<a name="line-33"></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'>Monad</span> <span class='hs-layout'>(</span> <span class='hs-varid'>virtualTreeIO</span><span class='hs-layout'>,</span> <span class='hs-varid'>exists</span> <span class='hs-layout'>)</span>
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<a name="line-35"></a><a name="announceFiles"></a><span class='hs-definition'>announceFiles</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Maybe</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SubPath</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-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-36"></a><span class='hs-definition'>announceFiles</span> <span class='hs-conid'>Nothing</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-37"></a><span class='hs-definition'>announceFiles</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>files</span><span class='hs-layout'>)</span> <span class='hs-varid'>message</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>putStrLn</span> <span class='hs-varop'>$</span> <span class='hs-varid'>message</span> <span class='hs-varop'>++</span> <span class='hs-str'>" "</span> <span class='hs-varop'>++</span>
<a name="line-38"></a> <span class='hs-varid'>unwords</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>show</span> <span class='hs-varid'>files</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span> <span class='hs-str'>":\n"</span>
<a name="line-39"></a>
<a name="line-40"></a><a name="filterExistingFiles"></a><span class='hs-definition'>filterExistingFiles</span> <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-conid'>ApplyState</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>~</span> <span class='hs-conid'>Tree</span><span class='hs-layout'>)</span>
<a name="line-41"></a> <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-keyglyph'>[</span><span class='hs-conid'>SubPath</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SubPath</span><span class='hs-keyglyph'>]</span>
<a name="line-42"></a><span class='hs-definition'>filterExistingFiles</span> <span class='hs-varid'>repo</span> <span class='hs-varid'>files</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-43"></a> <span class='hs-varid'>pristine</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readRecorded</span> <span class='hs-varid'>repo</span>
<a name="line-44"></a> <span class='hs-comment'>-- TODO this is slightly inefficient, since we should really somehow</span>
<a name="line-45"></a> <span class='hs-comment'>-- extract the unrecorded state as a side-effect of unrecordedChanges</span>
<a name="line-46"></a> <span class='hs-varid'>index</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readUnrecorded</span> <span class='hs-varid'>repo</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>files</span>
<a name="line-47"></a> <span class='hs-varid'>nonboring</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>restrictBoring</span> <span class='hs-varid'>index</span>
<a name="line-48"></a> <span class='hs-varid'>working</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>applyTreeFilter</span> <span class='hs-varid'>nonboring</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>readPlainTree</span> <span class='hs-str'>"."</span>
<a name="line-49"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>paths</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>toFilePath</span> <span class='hs-varid'>files</span>
<a name="line-50"></a> <span class='hs-varid'>check</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>virtualTreeIO</span> <span class='hs-layout'>(</span><span class='hs-varid'>mapM</span> <span class='hs-varid'>exists</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>floatPath</span> <span class='hs-varid'>paths</span><span class='hs-layout'>)</span>
<a name="line-51"></a> <span class='hs-layout'>(</span><span class='hs-varid'>in_working</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>check</span> <span class='hs-varid'>working</span>
<a name="line-52"></a> <span class='hs-layout'>(</span><span class='hs-varid'>in_pristine</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>check</span> <span class='hs-varid'>pristine</span>
<a name="line-53"></a> <span class='hs-varid'>mapM_</span> <span class='hs-varid'>maybe_warn</span> <span class='hs-varop'>$</span> <span class='hs-varid'>zip3</span> <span class='hs-varid'>paths</span> <span class='hs-varid'>in_working</span> <span class='hs-varid'>in_pristine</span>
<a name="line-54"></a> <span class='hs-varid'>return</span> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>path</span> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>path</span><span class='hs-layout'>,</span> <span class='hs-conid'>True</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>zip</span> <span class='hs-varid'>files</span> <span class='hs-layout'>(</span><span class='hs-varid'>zipWith</span> <span class='hs-layout'>(</span><span class='hs-varop'>||</span><span class='hs-layout'>)</span> <span class='hs-varid'>in_working</span> <span class='hs-varid'>in_pristine</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>]</span>
<a name="line-55"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>maybe_warn</span> <span class='hs-layout'>(</span><span class='hs-varid'>file</span><span class='hs-layout'>,</span> <span class='hs-conid'>False</span><span class='hs-layout'>,</span> <span class='hs-conid'>False</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-56"></a> <span class='hs-varid'>putStrLn</span> <span class='hs-varop'>$</span> <span class='hs-str'>"WARNING: File '"</span><span class='hs-varop'>++</span><span class='hs-varid'>file</span><span class='hs-varop'>++</span><span class='hs-str'>"' does not exist!"</span>
<a name="line-57"></a> <span class='hs-varid'>maybe_warn</span> <span class='hs-layout'>(</span><span class='hs-varid'>file</span><span class='hs-layout'>,</span> <span class='hs-conid'>True</span><span class='hs-layout'>,</span> <span class='hs-conid'>False</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>LookForAdds</span> <span class='hs-varop'>`notElem`</span> <span class='hs-varid'>extractOptions</span> <span class='hs-varid'>repo</span> <span class='hs-keyglyph'>=</span>
<a name="line-58"></a> <span class='hs-varid'>putStrLn</span> <span class='hs-varop'>$</span> <span class='hs-str'>"WARNING: File '"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>file</span> <span class='hs-varop'>++</span> <span class='hs-str'>"' not in repository!"</span>
<a name="line-59"></a> <span class='hs-varid'>maybe_warn</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
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</pre></body>
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