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<title>XMonad/Prompt/DirExec.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-2"></a><span class='hs-comment'>-- |</span>
<a name="line-3"></a><span class='hs-comment'>-- Module : XMonad.Prompt.DirExec</span>
<a name="line-4"></a><span class='hs-comment'>-- Copyright : (C) 2008 Juraj Hercek</span>
<a name="line-5"></a><span class='hs-comment'>-- License : BSD3</span>
<a name="line-6"></a><span class='hs-comment'>--</span>
<a name="line-7"></a><span class='hs-comment'>-- Maintainer : juhe_xmonad@hck.sk</span>
<a name="line-8"></a><span class='hs-comment'>-- Stability : unstable</span>
<a name="line-9"></a><span class='hs-comment'>-- Portability : unportable</span>
<a name="line-10"></a><span class='hs-comment'>--</span>
<a name="line-11"></a><span class='hs-comment'>-- A directory file executables prompt for XMonad. This might be useful if you</span>
<a name="line-12"></a><span class='hs-comment'>-- don't want to have scripts in your PATH environment variable (same</span>
<a name="line-13"></a><span class='hs-comment'>-- executable names, different behavior) - otherwise you might want to use</span>
<a name="line-14"></a><span class='hs-comment'>-- "XMonad.Prompt.Shell" instead - but you want to have easy access to these</span>
<a name="line-15"></a><span class='hs-comment'>-- executables through the xmonad's prompt.</span>
<a name="line-16"></a><span class='hs-comment'>--</span>
<a name="line-17"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-18"></a>
<a name="line-19"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>Prompt</span><span class='hs-varop'>.</span><span class='hs-conid'>DirExec</span>
<a name="line-20"></a> <span class='hs-layout'>(</span> <span class='hs-comment'>-- * Usage</span>
<a name="line-21"></a> <span class='hs-comment'>-- $usage</span>
<a name="line-22"></a> <span class='hs-varid'>dirExecPrompt</span>
<a name="line-23"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>dirExecPromptNamed</span>
<a name="line-24"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-25"></a>
<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'>Directory</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'>Monad</span>
<a name="line-28"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span>
<a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span>
<a name="line-30"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>Prompt</span>
<a name="line-31"></a>
<a name="line-32"></a><span class='hs-comment'>-- $usage</span>
<a name="line-33"></a><span class='hs-comment'>-- 1. In your @~\/.xmonad\/xmonad.hs@:</span>
<a name="line-34"></a><span class='hs-comment'>--</span>
<a name="line-35"></a><span class='hs-comment'>-- > import XMonad.Prompt.DirExec</span>
<a name="line-36"></a><span class='hs-comment'>--</span>
<a name="line-37"></a><span class='hs-comment'>-- 2. In your keybindings add something like:</span>
<a name="line-38"></a><span class='hs-comment'>--</span>
<a name="line-39"></a><span class='hs-comment'>-- > , ("M-C-x", dirExecPrompt defaultXPConfig spawn "/home/joe/.scipts")</span>
<a name="line-40"></a><span class='hs-comment'>--</span>
<a name="line-41"></a><span class='hs-comment'>-- or</span>
<a name="line-42"></a><span class='hs-comment'>--</span>
<a name="line-43"></a><span class='hs-comment'>-- > , ("M-C-x", dirExecPromptNamed defaultXPConfig spawn</span>
<a name="line-44"></a><span class='hs-comment'>-- > "/home/joe/.scripts" "My Scripts: ")</span>
<a name="line-45"></a><span class='hs-comment'>--</span>
<a name="line-46"></a><span class='hs-comment'>-- or add this after your default bindings:</span>
<a name="line-47"></a><span class='hs-comment'>--</span>
<a name="line-48"></a><span class='hs-comment'>-- > ++</span>
<a name="line-49"></a><span class='hs-comment'>-- > [ ("M-x " ++ key, dirExecPrompt defaultXPConfig fn "/home/joe/.scripts")</span>
<a name="line-50"></a><span class='hs-comment'>-- > | (key, fn) <- [ ("x", spawn), ("M-x", runInTerm "-hold") ]</span>
<a name="line-51"></a><span class='hs-comment'>-- > ]</span>
<a name="line-52"></a><span class='hs-comment'>-- > ++</span>
<a name="line-53"></a><span class='hs-comment'>--</span>
<a name="line-54"></a><span class='hs-comment'>-- The first alternative uses the last element of the directory path for</span>
<a name="line-55"></a><span class='hs-comment'>-- a name of prompt. The second alternative uses the provided string</span>
<a name="line-56"></a><span class='hs-comment'>-- for the name of the prompt. The third alternative defines 2 key bindings,</span>
<a name="line-57"></a><span class='hs-comment'>-- first one spawns the program by shell, second one runs the program in</span>
<a name="line-58"></a><span class='hs-comment'>-- terminal</span>
<a name="line-59"></a><span class='hs-comment'>--</span>
<a name="line-60"></a><span class='hs-comment'>-- For detailed instruction on editing the key binding see</span>
<a name="line-61"></a><span class='hs-comment'>-- "XMonad.Doc.Extending#Editing_key_bindings".</span>
<a name="line-62"></a>
<a name="line-63"></a><a name="DirExec"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>DirExec</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DirExec</span> <span class='hs-conid'>String</span>
<a name="line-64"></a>
<a name="line-65"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>XPrompt</span> <span class='hs-conid'>DirExec</span> <span class='hs-keyword'>where</span>
<a name="line-66"></a> <span class='hs-varid'>showXPrompt</span> <span class='hs-layout'>(</span><span class='hs-conid'>DirExec</span> <span class='hs-varid'>name</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>name</span>
<a name="line-67"></a>
<a name="line-68"></a><a name="dirExecPrompt"></a><span class='hs-comment'>-- | Function 'dirExecPrompt' starts the prompt with list of all executable</span>
<a name="line-69"></a><span class='hs-comment'>-- files in directory specified by 'FilePath'. The name of the prompt is taken</span>
<a name="line-70"></a><span class='hs-comment'>-- from the last element of the path. If you specify root directory - @\/@ - as</span>
<a name="line-71"></a><span class='hs-comment'>-- the path, name @Root:@ will be used as the name of the prompt instead. The</span>
<a name="line-72"></a><span class='hs-comment'>-- 'XPConfig' parameter can be used to customize visuals of the prompt.</span>
<a name="line-73"></a><span class='hs-comment'>-- The runner parameter specifies the function used to run the program - see</span>
<a name="line-74"></a><span class='hs-comment'>-- usage for more information</span>
<a name="line-75"></a><span class='hs-definition'>dirExecPrompt</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>XPConfig</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-76"></a><span class='hs-definition'>dirExecPrompt</span> <span class='hs-varid'>cfg</span> <span class='hs-varid'>runner</span> <span class='hs-varid'>path</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-77"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varop'>++</span> <span class='hs-str'>": "</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>last</span>
<a name="line-78"></a> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-str'>"Root"</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- handling of "/" path parameter</span>
<a name="line-79"></a> <span class='hs-varop'>.</span> <span class='hs-varid'>words</span>
<a name="line-80"></a> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>if</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-chr'>'/'</span> <span class='hs-keyword'>then</span> <span class='hs-chr'>' '</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-81"></a> <span class='hs-varop'>$</span> <span class='hs-varid'>path</span>
<a name="line-82"></a> <span class='hs-varid'>dirExecPromptNamed</span> <span class='hs-varid'>cfg</span> <span class='hs-varid'>runner</span> <span class='hs-varid'>path</span> <span class='hs-varid'>name</span>
<a name="line-83"></a>
<a name="line-84"></a><a name="dirExecPromptNamed"></a><span class='hs-comment'>-- | Function 'dirExecPromptNamed' does the same as 'dirExecPrompt' except</span>
<a name="line-85"></a><span class='hs-comment'>-- the name of the prompt is specified by 'String' parameter.</span>
<a name="line-86"></a><span class='hs-definition'>dirExecPromptNamed</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>XPConfig</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-87"></a><span class='hs-definition'>dirExecPromptNamed</span> <span class='hs-varid'>cfg</span> <span class='hs-varid'>runner</span> <span class='hs-varid'>path</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-88"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>path'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>path</span> <span class='hs-varop'>++</span> <span class='hs-str'>"/"</span>
<a name="line-89"></a> <span class='hs-varid'>cmds</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>getDirectoryExecutables</span> <span class='hs-varid'>path'</span>
<a name="line-90"></a> <span class='hs-varid'>mkXPrompt</span> <span class='hs-layout'>(</span><span class='hs-conid'>DirExec</span> <span class='hs-varid'>name</span><span class='hs-layout'>)</span> <span class='hs-varid'>cfg</span> <span class='hs-layout'>(</span><span class='hs-varid'>compList</span> <span class='hs-varid'>cmds</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>runner</span> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-varid'>path'</span> <span class='hs-varop'>++</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-91"></a> <span class='hs-keyword'>where</span>
<a name="line-92"></a> <span class='hs-varid'>compList</span> <span class='hs-varid'>cmds</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varop'>.</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-varid'>isInfixOf</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>cmds</span>
<a name="line-93"></a>
<a name="line-94"></a><a name="getDirectoryExecutables"></a><span class='hs-definition'>getDirectoryExecutables</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span>
<a name="line-95"></a><span class='hs-definition'>getDirectoryExecutables</span> <span class='hs-varid'>path</span> <span class='hs-keyglyph'>=</span>
<a name="line-96"></a> <span class='hs-layout'>(</span><span class='hs-varid'>getDirectoryContents</span> <span class='hs-varid'>path</span> <span class='hs-varop'>>>=</span>
<a name="line-97"></a> <span class='hs-varid'>filterM</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>let</span> <span class='hs-varid'>x'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>path</span> <span class='hs-varop'>++</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>in</span>
<a name="line-98"></a> <span class='hs-varid'>liftM2</span> <span class='hs-layout'>(</span><span class='hs-varop'>&&</span><span class='hs-layout'>)</span>
<a name="line-99"></a> <span class='hs-layout'>(</span><span class='hs-varid'>doesFileExist</span> <span class='hs-varid'>x'</span><span class='hs-layout'>)</span>
<a name="line-100"></a> <span class='hs-layout'>(</span><span class='hs-varid'>liftM</span> <span class='hs-varid'>executable</span> <span class='hs-layout'>(</span><span class='hs-varid'>getPermissions</span> <span class='hs-varid'>x'</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-101"></a> <span class='hs-varop'>`catch`</span> <span class='hs-layout'>(</span><span class='hs-varid'>return</span> <span class='hs-varop'>.</span> <span class='hs-varid'>return</span> <span class='hs-varop'>.</span> <span class='hs-varid'>show</span><span class='hs-layout'>)</span>
<a name="line-102"></a>
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