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<title>src/Darcs/Commands/Remove.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>
<a name="line-19"></a>
<a name="line-20"></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'>Remove</span> <span class='hs-layout'>(</span> <span class='hs-varid'>remove</span><span class='hs-layout'>,</span> <span class='hs-varid'>rm</span><span class='hs-layout'>,</span> <span class='hs-varid'>unadd</span> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-21"></a>
<a name="line-22"></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'>foldM</span> <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'>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-24"></a> <span class='hs-varid'>commandAlias</span><span class='hs-layout'>,</span> <span class='hs-varid'>commandStub</span><span class='hs-layout'>,</span>
<a name="line-25"></a> <span class='hs-varid'>putWarning</span>
<a name="line-26"></a> <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'>Arguments</span> <span class='hs-layout'>(</span> <span class='hs-conid'>DarcsFlag</span> <span class='hs-layout'>(</span><span class='hs-conid'>Recursive</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>fixSubPaths</span><span class='hs-layout'>,</span>
<a name="line-28"></a> <span class='hs-varid'>listRegisteredFiles</span><span class='hs-layout'>,</span>
<a name="line-29"></a> <span class='hs-varid'>workingRepoDir</span><span class='hs-layout'>,</span> <span class='hs-varid'>umaskOption</span><span class='hs-layout'>,</span>
<a name="line-30"></a> <span class='hs-varid'>recursive</span>
<a name="line-31"></a> <span class='hs-layout'>)</span>
<a name="line-32"></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'>sp2fn</span> <span class='hs-layout'>)</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-layout'>(</span> <span class='hs-conid'>Repository</span><span class='hs-layout'>,</span> <span class='hs-varid'>withRepoLock</span><span class='hs-layout'>,</span> <span class='hs-conid'>RepoJob</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'>amInHashedRepository</span><span class='hs-layout'>,</span>
<a name="line-34"></a> <span class='hs-varid'>addToPending</span><span class='hs-layout'>,</span> <span class='hs-varid'>readRecordedAndPending</span><span class='hs-layout'>,</span> <span class='hs-varid'>readUnrecorded</span> <span class='hs-layout'>)</span>
<a name="line-35"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Diff</span><span class='hs-layout'>(</span> <span class='hs-varid'>treeDiff</span> <span class='hs-layout'>)</span>
<a name="line-36"></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> <span class='hs-conid'>PrimOf</span><span class='hs-layout'>,</span> <span class='hs-conid'>PrimPatch</span><span class='hs-layout'>,</span> <span class='hs-varid'>adddir</span><span class='hs-layout'>,</span> <span class='hs-varid'>rmdir</span><span class='hs-layout'>,</span> <span class='hs-varid'>addfile</span><span class='hs-layout'>,</span> <span class='hs-varid'>rmfile</span> <span class='hs-layout'>)</span>
<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'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>FileName</span><span class='hs-layout'>(</span> <span class='hs-varid'>fn2fp</span> <span class='hs-layout'>)</span>
<a name="line-38"></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-39"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Witnesses</span><span class='hs-varop'>.</span><span class='hs-conid'>Ordered</span> <span class='hs-layout'>(</span> <span class='hs-conid'>FL</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'>+>+</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<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'>Witnesses</span><span class='hs-varop'>.</span><span class='hs-conid'>Sealed</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Sealed</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'>Gap</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'>FreeLeft</span><span class='hs-layout'>,</span> <span class='hs-varid'>unFreeLeft</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'>Repository</span><span class='hs-varop'>.</span><span class='hs-conid'>Prefs</span> <span class='hs-layout'>(</span> <span class='hs-varid'>filetypeFunction</span><span class='hs-layout'>,</span> <span class='hs-conid'>FileType</span> <span class='hs-layout'>)</span>
<a name="line-42"></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> <span class='hs-conid'>TreeItem</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'>find</span><span class='hs-layout'>,</span> <span class='hs-varid'>modifyTree</span><span class='hs-layout'>,</span> <span class='hs-varid'>expand</span><span class='hs-layout'>,</span> <span class='hs-varid'>list</span> <span class='hs-layout'>)</span>
<a name="line-43"></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-varid'>anchorPath</span><span class='hs-layout'>,</span> <span class='hs-conid'>AnchoredPath</span> <span class='hs-layout'>)</span>
<a name="line-44"></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>
<a name="line-45"></a>
<a name="line-46"></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-varop'>.</span><span class='hs-conid'>Add</span><span class='hs-layout'>(</span> <span class='hs-varid'>expandDirs</span> <span class='hs-layout'>)</span>
<a name="line-47"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Printer</span> <span class='hs-layout'>(</span> <span class='hs-varid'>text</span> <span class='hs-layout'>)</span>
<a name="line-48"></a>
<a name="line-49"></a><span class='hs-cpp'>#include "gadts.h"</span>
<a name="line-50"></a>
<a name="line-51"></a><a name="removeDescription"></a><span class='hs-definition'>removeDescription</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span>
<a name="line-52"></a><span class='hs-definition'>removeDescription</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"Remove files from version control."</span>
<a name="line-53"></a>
<a name="line-54"></a><a name="removeHelp"></a><span class='hs-definition'>removeHelp</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span>
<a name="line-55"></a><span class='hs-definition'>removeHelp</span> <span class='hs-keyglyph'>=</span>
<a name="line-56"></a> <span class='hs-str'>"The `darcs remove' command exists primarily for symmetry with `darcs\n"</span> <span class='hs-varop'>++</span>
<a name="line-57"></a> <span class='hs-str'>"add', as the normal way to remove a file from version control is\n"</span> <span class='hs-varop'>++</span>
<a name="line-58"></a> <span class='hs-str'>"simply to delete it from the working tree. This command is only\n"</span> <span class='hs-varop'>++</span>
<a name="line-59"></a> <span class='hs-str'>"useful in the unusual case where one wants to record a removal patch\n"</span> <span class='hs-varop'>++</span>
<a name="line-60"></a> <span class='hs-str'>"WITHOUT deleting the copy in the working tree (which can be re-added).\n"</span> <span class='hs-varop'>++</span>
<a name="line-61"></a> <span class='hs-str'>"\n"</span> <span class='hs-varop'>++</span>
<a name="line-62"></a> <span class='hs-str'>"Note that applying a removal patch to a repository (e.g. by pulling\n"</span> <span class='hs-varop'>++</span>
<a name="line-63"></a> <span class='hs-str'>"the patch) will ALWAYS affect the working tree of that repository.\n"</span>
<a name="line-64"></a>
<a name="line-65"></a><a name="remove"></a><span class='hs-definition'>remove</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DarcsCommand</span>
<a name="line-66"></a><span class='hs-definition'>remove</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DarcsCommand</span> <span class='hs-layout'>{</span><span class='hs-varid'>commandProgramName</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"darcs"</span><span class='hs-layout'>,</span>
<a name="line-67"></a> <span class='hs-varid'>commandName</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"remove"</span><span class='hs-layout'>,</span>
<a name="line-68"></a> <span class='hs-varid'>commandHelp</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>removeHelp</span><span class='hs-layout'>,</span>
<a name="line-69"></a> <span class='hs-varid'>commandDescription</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>removeDescription</span><span class='hs-layout'>,</span>
<a name="line-70"></a> <span class='hs-varid'>commandExtraArgs</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>,</span>
<a name="line-71"></a> <span class='hs-varid'>commandExtraArgHelp</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"<FILE or DIRECTORY> ..."</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-72"></a> <span class='hs-varid'>commandCommand</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>removeCmd</span><span class='hs-layout'>,</span>
<a name="line-73"></a> <span class='hs-varid'>commandPrereq</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>amInHashedRepository</span><span class='hs-layout'>,</span>
<a name="line-74"></a> <span class='hs-varid'>commandGetArgPossibilities</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>listRegisteredFiles</span><span class='hs-layout'>,</span>
<a name="line-75"></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-76"></a> <span class='hs-varid'>commandAdvancedOptions</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>umaskOption</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-77"></a> <span class='hs-varid'>commandBasicOptions</span> <span class='hs-keyglyph'>=</span>
<a name="line-78"></a> <span class='hs-keyglyph'>[</span><span class='hs-varid'>workingRepoDir</span><span class='hs-layout'>,</span> <span class='hs-varid'>recursive</span> <span class='hs-str'>"recurse into subdirectories"</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>}</span>
<a name="line-79"></a>
<a name="line-80"></a><a name="removeCmd"></a><span class='hs-definition'>removeCmd</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-81"></a><span class='hs-definition'>removeCmd</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>relargs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-82"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>null</span> <span class='hs-varid'>relargs</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-83"></a> <span class='hs-varid'>fail</span> <span class='hs-str'>"Nothing specified, nothing removed."</span>
<a name="line-84"></a> <span class='hs-varid'>origfiles</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fixSubPaths</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>relargs</span>
<a name="line-85"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>null</span> <span class='hs-varid'>origfiles</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-86"></a> <span class='hs-varid'>fail</span> <span class='hs-str'>"No valid arguments were given."</span>
<a name="line-87"></a> <span class='hs-varid'>withRepoLock</span> <span class='hs-varid'>opts</span> <span class='hs-varop'>$</span> <span class='hs-conid'>RepoJob</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>repository</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-88"></a> <span class='hs-varid'>args</span> <span class='hs-keyglyph'><-</span> <span class='hs-keyword'>if</span> <span class='hs-conid'>Recursive</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>opts</span>
<a name="line-89"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>reverse</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>expandDirs</span> <span class='hs-varid'>origfiles</span>
<a name="line-90"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-varid'>origfiles</span>
<a name="line-91"></a> <span class='hs-conid'>Sealed</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>makeRemovePatch</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>repository</span> <span class='hs-varid'>args</span>
<a name="line-92"></a> <span class='hs-varid'>addToPending</span> <span class='hs-varid'>repository</span> <span class='hs-varid'>p</span>
<a name="line-93"></a>
<a name="line-94"></a><a name="makeRemovePatch"></a><span class='hs-comment'>-- | makeRemovePatch builds a list of patches to remove the given filepaths.</span>
<a name="line-95"></a><span class='hs-comment'>-- This function does not recursively process directories. The 'Recursive'</span>
<a name="line-96"></a><span class='hs-comment'>-- flag should be handled by the caller by adding all offspring of a directory</span>
<a name="line-97"></a><span class='hs-comment'>-- to the files list.</span>
<a name="line-98"></a><span class='hs-definition'>makeRemovePatch</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-99"></a> <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>
<a name="line-100"></a> <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-layout'>(</span><span class='hs-conid'>Sealed</span> <span class='hs-layout'>(</span><span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PrimOf</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>u</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-101"></a><span class='hs-definition'>makeRemovePatch</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>repository</span> <span class='hs-varid'>files</span> <span class='hs-keyglyph'>=</span>
<a name="line-102"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>recorded</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>expand</span> <span class='hs-varop'>=<<</span> <span class='hs-varid'>readRecordedAndPending</span> <span class='hs-varid'>repository</span>
<a name="line-103"></a> <span class='hs-varid'>unrecorded</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readUnrecorded</span> <span class='hs-varid'>repository</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>files</span>
<a name="line-104"></a> <span class='hs-varid'>ftf</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>filetypeFunction</span>
<a name="line-105"></a> <span class='hs-varid'>result</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>foldM</span> <span class='hs-varid'>removeOnePath</span> <span class='hs-layout'>(</span><span class='hs-varid'>ftf</span><span class='hs-layout'>,</span><span class='hs-varid'>recorded</span><span class='hs-layout'>,</span><span class='hs-varid'>unrecorded</span><span class='hs-layout'>,</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>floatPath</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varop'>.</span> <span class='hs-varid'>sp2fn</span><span class='hs-layout'>)</span> <span class='hs-varid'>files</span>
<a name="line-106"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>result</span> <span class='hs-keyword'>of</span>
<a name="line-107"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-varid'>patches</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span>
<a name="line-108"></a> <span class='hs-varid'>unFreeLeft</span> <span class='hs-varop'>$</span> <span class='hs-varid'>foldr</span> <span class='hs-layout'>(</span><span class='hs-varid'>joinGap</span> <span class='hs-layout'>(</span><span class='hs-varop'>+>+</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>emptyGap</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>reverse</span> <span class='hs-varid'>patches</span>
<a name="line-109"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>removeOnePath</span> <span class='hs-layout'>(</span><span class='hs-varid'>ftf</span><span class='hs-layout'>,</span> <span class='hs-varid'>recorded</span><span class='hs-layout'>,</span> <span class='hs-varid'>unrecorded</span><span class='hs-layout'>,</span> <span class='hs-varid'>patches</span><span class='hs-layout'>)</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-110"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>recorded'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>modifyTree</span> <span class='hs-varid'>recorded</span> <span class='hs-varid'>f</span> <span class='hs-conid'>Nothing</span>
<a name="line-111"></a> <span class='hs-varid'>unrecorded'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>modifyTree</span> <span class='hs-varid'>unrecorded</span> <span class='hs-varid'>f</span> <span class='hs-conid'>Nothing</span>
<a name="line-112"></a> <span class='hs-varid'>local</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>makeRemoveGap</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>ftf</span> <span class='hs-varid'>recorded</span> <span class='hs-varid'>unrecorded</span> <span class='hs-varid'>unrecorded'</span> <span class='hs-varid'>f</span>
<a name="line-113"></a> <span class='hs-comment'>-- we can tell if the remove succeeded by looking if local is</span>
<a name="line-114"></a> <span class='hs-comment'>-- empty. If the remove succeeded, we should pass on updated</span>
<a name="line-115"></a> <span class='hs-comment'>-- recorded and unrecorded that reflect the removal</span>
<a name="line-116"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>local</span> <span class='hs-keyword'>of</span>
<a name="line-117"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>gap</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>ftf</span><span class='hs-layout'>,</span> <span class='hs-varid'>recorded'</span><span class='hs-layout'>,</span> <span class='hs-varid'>unrecorded'</span><span class='hs-layout'>,</span> <span class='hs-varid'>gap</span> <span class='hs-conop'>:</span> <span class='hs-varid'>patches</span><span class='hs-layout'>)</span>
<a name="line-118"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>ftf</span><span class='hs-layout'>,</span> <span class='hs-varid'>recorded</span><span class='hs-layout'>,</span> <span class='hs-varid'>unrecorded</span><span class='hs-layout'>,</span> <span class='hs-varid'>patches</span><span class='hs-layout'>)</span>
<a name="line-119"></a>
<a name="line-120"></a><a name="makeRemoveGap"></a><span class='hs-comment'>-- | Takes a file path and returns the FL of patches to remove that, wrapped in</span>
<a name="line-121"></a><span class='hs-comment'>-- a 'Gap'.</span>
<a name="line-122"></a><span class='hs-comment'>-- Returns 'Nothing' in case the path cannot be removed (if it is not tracked,</span>
<a name="line-123"></a><span class='hs-comment'>-- or if it's a directory and it's not tracked).</span>
<a name="line-124"></a><span class='hs-comment'>-- The three 'Tree' arguments are the recorded state, the unrecorded state</span>
<a name="line-125"></a><span class='hs-comment'>-- excluding the removal of this file, and the unrecorded state including the</span>
<a name="line-126"></a><span class='hs-comment'>-- removal of this file.</span>
<a name="line-127"></a><span class='hs-definition'>makeRemoveGap</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</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-layout'>(</span><span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FileType</span><span class='hs-layout'>)</span>
<a name="line-128"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Tree</span> <span class='hs-conid'>IO</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Tree</span> <span class='hs-conid'>IO</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Tree</span> <span class='hs-conid'>IO</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>AnchoredPath</span>
<a name="line-129"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>FreeLeft</span> <span class='hs-layout'>(</span><span class='hs-conid'>FL</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-130"></a><span class='hs-definition'>makeRemoveGap</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>ftf</span> <span class='hs-varid'>recorded</span> <span class='hs-varid'>unrecorded</span> <span class='hs-varid'>unrecorded'</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span>
<a name="line-131"></a> <span class='hs-keyword'>case</span> <span class='hs-layout'>(</span><span class='hs-varid'>find</span> <span class='hs-varid'>recorded</span> <span class='hs-varid'>f</span><span class='hs-layout'>,</span> <span class='hs-varid'>find</span> <span class='hs-varid'>unrecorded</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-132"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>SubTree</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>SubTree</span> <span class='hs-varid'>unrecordedChildren</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-133"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>not</span> <span class='hs-varop'>$</span> <span class='hs-varid'>null</span> <span class='hs-layout'>(</span><span class='hs-varid'>list</span> <span class='hs-varid'>unrecordedChildren</span><span class='hs-layout'>)</span>
<a name="line-134"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>skipAndWarn</span> <span class='hs-str'>"it is not empty"</span>
<a name="line-135"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>freeGap</span> <span class='hs-layout'>(</span><span class='hs-varid'>rmdir</span> <span class='hs-varid'>f_fp</span> <span class='hs-conop'>:>:</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span>
<a name="line-136"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>File</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>File</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-137"></a> <span class='hs-conid'>Just</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>treeDiff</span> <span class='hs-varid'>ftf</span> <span class='hs-varid'>unrecorded</span> <span class='hs-varid'>unrecorded'</span>
<a name="line-138"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>File</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-139"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>freeGap</span> <span class='hs-layout'>(</span><span class='hs-varid'>addfile</span> <span class='hs-varid'>f_fp</span> <span class='hs-conop'>:>:</span> <span class='hs-varid'>rmfile</span> <span class='hs-varid'>f_fp</span> <span class='hs-conop'>:>:</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span>
<a name="line-140"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>SubTree</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-141"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>freeGap</span> <span class='hs-layout'>(</span><span class='hs-varid'>adddir</span> <span class='hs-varid'>f_fp</span> <span class='hs-conop'>:>:</span> <span class='hs-varid'>rmdir</span> <span class='hs-varid'>f_fp</span> <span class='hs-conop'>:>:</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span>
<a name="line-142"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>skipAndWarn</span> <span class='hs-str'>"it is not tracked by darcs"</span>
<a name="line-143"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>f_fp</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>anchorPath</span> <span class='hs-str'>""</span> <span class='hs-varid'>f</span>
<a name="line-144"></a> <span class='hs-varid'>skipAndWarn</span> <span class='hs-varid'>reason</span> <span class='hs-keyglyph'>=</span>
<a name="line-145"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>putWarning</span> <span class='hs-varid'>opts</span> <span class='hs-varop'>.</span> <span class='hs-varid'>text</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Can't remove "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>f_fp</span>
<a name="line-146"></a> <span class='hs-varop'>++</span> <span class='hs-str'>" ("</span> <span class='hs-varop'>++</span> <span class='hs-varid'>reason</span> <span class='hs-varop'>++</span> <span class='hs-str'>")"</span>
<a name="line-147"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Nothing</span>
<a name="line-148"></a>
<a name="line-149"></a>
<a name="line-150"></a><a name="rmDescription"></a><span class='hs-definition'>rmDescription</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span>
<a name="line-151"></a><span class='hs-definition'>rmDescription</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"Help newbies find `darcs remove'."</span>
<a name="line-152"></a>
<a name="line-153"></a><a name="rmHelp"></a><span class='hs-definition'>rmHelp</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span>
<a name="line-154"></a><span class='hs-definition'>rmHelp</span> <span class='hs-keyglyph'>=</span>
<a name="line-155"></a> <span class='hs-str'>"The `darcs rm' command does nothing.\n"</span> <span class='hs-varop'>++</span>
<a name="line-156"></a> <span class='hs-str'>"\n"</span> <span class='hs-varop'>++</span>
<a name="line-157"></a> <span class='hs-str'>"The normal way to remove a file from version control is simply to\n"</span> <span class='hs-varop'>++</span>
<a name="line-158"></a> <span class='hs-str'>"delete it from the working tree. To remove a file from version\n"</span> <span class='hs-varop'>++</span>
<a name="line-159"></a> <span class='hs-str'>"control WITHOUT affecting the working tree, see `darcs remove'.\n"</span>
<a name="line-160"></a>
<a name="line-161"></a><a name="rm"></a><span class='hs-definition'>rm</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DarcsCommand</span>
<a name="line-162"></a><span class='hs-definition'>rm</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>commandStub</span> <span class='hs-str'>"rm"</span> <span class='hs-varid'>rmHelp</span> <span class='hs-varid'>rmDescription</span> <span class='hs-varid'>remove</span>
<a name="line-163"></a>
<a name="line-164"></a><a name="unadd"></a><span class='hs-definition'>unadd</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DarcsCommand</span>
<a name="line-165"></a><span class='hs-definition'>unadd</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>commandAlias</span> <span class='hs-str'>"unadd"</span> <span class='hs-conid'>Nothing</span> <span class='hs-varid'>remove</span>
<a name="line-166"></a>
</pre></body>
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