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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE PatternGuards #-}</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>CmdLine</span><span class='hs-layout'>(</span><span class='hs-conid'>Cmd</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'>getCmd</span><span class='hs-layout'>,</span> <span class='hs-varid'>exitWithHelp</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-4"></a>
<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>
<a name="line-6"></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-7"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span>
<a name="line-8"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Console</span><span class='hs-varop'>.</span><span class='hs-conid'>GetOpt</span>
<a name="line-9"></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-10"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Exit</span>
<a name="line-11"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>FilePath</span>
<a name="line-12"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Language</span><span class='hs-varop'>.</span><span class='hs-conid'>Preprocessor</span><span class='hs-varop'>.</span><span class='hs-conid'>Cpphs</span>
<a name="line-13"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Language</span><span class='hs-varop'>.</span><span class='hs-conid'>Haskell</span><span class='hs-varop'>.</span><span class='hs-conid'>Exts</span><span class='hs-varop'>.</span><span class='hs-conid'>Extension</span>
<a name="line-14"></a>
<a name="line-15"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Util</span>
<a name="line-16"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Paths_hlint</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'>Version</span>
<a name="line-18"></a>
<a name="line-19"></a>
<a name="line-20"></a><a name="Cmd"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Cmd</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Cmd</span>
<a name="line-21"></a> <span class='hs-layout'>{</span><span class='hs-varid'>cmdTest</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span> <span class='hs-comment'>-- ^ run in test mode?</span>
<a name="line-22"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdFiles</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>FilePath</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ which files to run it on</span>
<a name="line-23"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdHintFiles</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>FilePath</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ which settingsfiles to use</span>
<a name="line-24"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdReports</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>FilePath</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ where to generate reports</span>
<a name="line-25"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdIgnore</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-comment'>-- ^ the hints to ignore</span>
<a name="line-26"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdShowAll</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span> <span class='hs-comment'>-- ^ display all skipped items</span>
<a name="line-27"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdColor</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span> <span class='hs-comment'>-- ^ color the result</span>
<a name="line-28"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdCpphs</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>CpphsOptions</span> <span class='hs-comment'>-- ^ options for cpphs</span>
<a name="line-29"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdDataDir</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FilePath</span> <span class='hs-comment'>-- ^ the data directory</span>
<a name="line-30"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdEncoding</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ the text encoding</span>
<a name="line-31"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdFindHints</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>FilePath</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ source files to look for hints in</span>
<a name="line-32"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdLanguage</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Extension</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ the extensions (may be prefixed by "No")</span>
<a name="line-33"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdQuiet</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span> <span class='hs-comment'>-- ^ supress all console output</span>
<a name="line-34"></a> <span class='hs-layout'>}</span>
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<a name="line-37"></a><a name="Opts"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Opts</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Help</span>
<a name="line-38"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Ver</span>
<a name="line-39"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Test</span>
<a name="line-40"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Hints</span> <span class='hs-conid'>FilePath</span>
<a name="line-41"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Report</span> <span class='hs-conid'>FilePath</span>
<a name="line-42"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Skip</span> <span class='hs-conid'>String</span>
<a name="line-43"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>ShowAll</span>
<a name="line-44"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Color</span>
<a name="line-45"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Define</span> <span class='hs-conid'>String</span>
<a name="line-46"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Include</span> <span class='hs-conid'>String</span>
<a name="line-47"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Ext</span> <span class='hs-conid'>String</span>
<a name="line-48"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>DataDir</span> <span class='hs-conid'>String</span>
<a name="line-49"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Encoding</span> <span class='hs-conid'>String</span>
<a name="line-50"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>FindHints</span> <span class='hs-conid'>FilePath</span>
<a name="line-51"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Language</span> <span class='hs-conid'>String</span>
<a name="line-52"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Quiet</span>
<a name="line-53"></a> <span class='hs-keyword'>deriving</span> <span class='hs-conid'>Eq</span>
<a name="line-54"></a>
<a name="line-55"></a>
<a name="line-56"></a><a name="opts"></a><span class='hs-definition'>opts</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Option</span> <span class='hs-str'>"?"</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"help"</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>NoArg</span> <span class='hs-conid'>Help</span><span class='hs-layout'>)</span> <span class='hs-str'>"Display help message"</span>
<a name="line-57"></a> <span class='hs-layout'>,</span><span class='hs-conid'>Option</span> <span class='hs-str'>"v"</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"version"</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>NoArg</span> <span class='hs-conid'>Ver</span><span class='hs-layout'>)</span> <span class='hs-str'>"Display version information"</span>
<a name="line-58"></a> <span class='hs-layout'>,</span><span class='hs-conid'>Option</span> <span class='hs-str'>"r"</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"report"</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>OptArg</span> <span class='hs-layout'>(</span><span class='hs-conid'>Report</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fromMaybe</span> <span class='hs-str'>"report.html"</span><span class='hs-layout'>)</span> <span class='hs-str'>"file"</span><span class='hs-layout'>)</span> <span class='hs-str'>"Generate a report in HTML"</span>
<a name="line-59"></a> <span class='hs-layout'>,</span><span class='hs-conid'>Option</span> <span class='hs-str'>"h"</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"hint"</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>ReqArg</span> <span class='hs-conid'>Hints</span> <span class='hs-str'>"file"</span><span class='hs-layout'>)</span> <span class='hs-str'>"Hint/ignore file to use"</span>
<a name="line-60"></a> <span class='hs-layout'>,</span><span class='hs-conid'>Option</span> <span class='hs-str'>"c"</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"color"</span><span class='hs-layout'>,</span><span class='hs-str'>"colour"</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>NoArg</span> <span class='hs-conid'>Color</span><span class='hs-layout'>)</span> <span class='hs-str'>"Color output (requires ANSI terminal)"</span>
<a name="line-61"></a> <span class='hs-layout'>,</span><span class='hs-conid'>Option</span> <span class='hs-str'>"i"</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"ignore"</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>ReqArg</span> <span class='hs-conid'>Skip</span> <span class='hs-str'>"hint"</span><span class='hs-layout'>)</span> <span class='hs-str'>"Ignore a particular hint"</span>
<a name="line-62"></a> <span class='hs-layout'>,</span><span class='hs-conid'>Option</span> <span class='hs-str'>"s"</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"show"</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>NoArg</span> <span class='hs-conid'>ShowAll</span><span class='hs-layout'>)</span> <span class='hs-str'>"Show all ignored ideas"</span>
<a name="line-63"></a> <span class='hs-layout'>,</span><span class='hs-conid'>Option</span> <span class='hs-str'>"e"</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"extension"</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>ReqArg</span> <span class='hs-conid'>Ext</span> <span class='hs-str'>"ext"</span><span class='hs-layout'>)</span> <span class='hs-str'>"File extensions to search (defaults to hs and lhs)"</span>
<a name="line-64"></a> <span class='hs-layout'>,</span><span class='hs-conid'>Option</span> <span class='hs-str'>"X"</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"language"</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>ReqArg</span> <span class='hs-conid'>Language</span> <span class='hs-str'>"lang"</span><span class='hs-layout'>)</span> <span class='hs-str'>"Language extensions (Arrows, NoCPP)"</span>
<a name="line-65"></a> <span class='hs-layout'>,</span><span class='hs-conid'>Option</span> <span class='hs-str'>"u"</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"utf8"</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>NoArg</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Encoding</span> <span class='hs-str'>"UTF-8"</span><span class='hs-layout'>)</span> <span class='hs-str'>"Use UTF-8 text encoding"</span>
<a name="line-66"></a> <span class='hs-layout'>,</span><span class='hs-conid'>Option</span> <span class='hs-str'>""</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"encoding"</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>ReqArg</span> <span class='hs-conid'>Encoding</span> <span class='hs-str'>"encoding"</span><span class='hs-layout'>)</span> <span class='hs-str'>"Choose the text encoding"</span>
<a name="line-67"></a> <span class='hs-layout'>,</span><span class='hs-conid'>Option</span> <span class='hs-str'>"f"</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"find"</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>ReqArg</span> <span class='hs-conid'>FindHints</span> <span class='hs-str'>"file"</span><span class='hs-layout'>)</span> <span class='hs-str'>"Find hints in a Haskell file"</span>
<a name="line-68"></a> <span class='hs-layout'>,</span><span class='hs-conid'>Option</span> <span class='hs-str'>"t"</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"test"</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>NoArg</span> <span class='hs-conid'>Test</span><span class='hs-layout'>)</span> <span class='hs-str'>"Run in test mode"</span>
<a name="line-69"></a> <span class='hs-layout'>,</span><span class='hs-conid'>Option</span> <span class='hs-str'>"d"</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"datadir"</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>ReqArg</span> <span class='hs-conid'>DataDir</span> <span class='hs-str'>"dir"</span><span class='hs-layout'>)</span> <span class='hs-str'>"Override the data directory"</span>
<a name="line-70"></a> <span class='hs-layout'>,</span><span class='hs-conid'>Option</span> <span class='hs-str'>"q"</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"quiet"</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>NoArg</span> <span class='hs-conid'>Quiet</span><span class='hs-layout'>)</span> <span class='hs-str'>"Supress most console output"</span>
<a name="line-71"></a> <span class='hs-layout'>,</span><span class='hs-conid'>Option</span> <span class='hs-str'>""</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"cpp-define"</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>ReqArg</span> <span class='hs-conid'>Define</span> <span class='hs-str'>"name[=value]"</span><span class='hs-layout'>)</span> <span class='hs-str'>"CPP #define"</span>
<a name="line-72"></a> <span class='hs-layout'>,</span><span class='hs-conid'>Option</span> <span class='hs-str'>""</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"cpp-include"</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>ReqArg</span> <span class='hs-conid'>Include</span> <span class='hs-str'>"dir"</span><span class='hs-layout'>)</span> <span class='hs-str'>"CPP include path"</span>
<a name="line-73"></a> <span class='hs-keyglyph'>]</span>
<a name="line-74"></a>
<a name="line-75"></a>
<a name="line-76"></a><a name="getCmd"></a><span class='hs-comment'>-- | Exit out if you need to display help info</span>
<a name="line-77"></a><span class='hs-definition'>getCmd</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'>Cmd</span>
<a name="line-78"></a><span class='hs-definition'>getCmd</span> <span class='hs-varid'>args</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-79"></a> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>opt</span><span class='hs-layout'>,</span><span class='hs-varid'>files</span><span class='hs-layout'>,</span><span class='hs-varid'>err</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getOpt</span> <span class='hs-conid'>Permute</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>args</span>
<a name="line-80"></a> <span class='hs-varid'>unless</span> <span class='hs-layout'>(</span><span class='hs-varid'>null</span> <span class='hs-varid'>err</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-81"></a> <span class='hs-varid'>error</span> <span class='hs-varop'>$</span> <span class='hs-varid'>unlines</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Unrecognised arguments:"</span> <span class='hs-conop'>:</span> <span class='hs-varid'>err</span>
<a name="line-82"></a>
<a name="line-83"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ver</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>opt</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-84"></a> <span class='hs-varid'>putStr</span> <span class='hs-varid'>versionText</span>
<a name="line-85"></a> <span class='hs-varid'>exitWith</span> <span class='hs-conid'>ExitSuccess</span>
<a name="line-86"></a>
<a name="line-87"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-conid'>Help</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>opt</span><span class='hs-layout'>)</span> <span class='hs-varid'>exitWithHelp</span>
<a name="line-88"></a>
<a name="line-89"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>test</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Test</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>opt</span>
<a name="line-90"></a>
<a name="line-91"></a> <span class='hs-varid'>dataDir</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>last</span> <span class='hs-varop'>$</span> <span class='hs-varid'>getDataDir</span> <span class='hs-conop'>:</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>return</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>DataDir</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>opt</span><span class='hs-keyglyph'>]</span>
<a name="line-92"></a>
<a name="line-93"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>exts</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Ext</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>opt</span><span class='hs-keyglyph'>]</span>
<a name="line-94"></a> <span class='hs-varid'>exts2</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>null</span> <span class='hs-varid'>exts</span> <span class='hs-keyword'>then</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"hs"</span><span class='hs-layout'>,</span><span class='hs-str'>"lhs"</span><span class='hs-keyglyph'>]</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>exts</span>
<a name="line-95"></a> <span class='hs-varid'>files</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>concatMapM</span> <span class='hs-layout'>(</span><span class='hs-varid'>getFile</span> <span class='hs-varid'>exts2</span><span class='hs-layout'>)</span> <span class='hs-varid'>files</span>
<a name="line-96"></a> <span class='hs-varid'>findHints</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>concatMapM</span> <span class='hs-layout'>(</span><span class='hs-varid'>getFile</span> <span class='hs-varid'>exts2</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-conid'>FindHints</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>opt</span><span class='hs-keyglyph'>]</span>
<a name="line-97"></a>
<a name="line-98"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>hintFiles</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Hints</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>opt</span><span class='hs-keyglyph'>]</span>
<a name="line-99"></a> <span class='hs-varid'>hints</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-varid'>getHintFile</span> <span class='hs-varid'>dataDir</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>hintFiles</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"HLint"</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>null</span> <span class='hs-varid'>hintFiles</span><span class='hs-keyglyph'>]</span>
<a name="line-100"></a>
<a name="line-101"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>cpphs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultCpphsOptions</span>
<a name="line-102"></a> <span class='hs-layout'>{</span><span class='hs-varid'>boolopts</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>defaultBoolOptions</span><span class='hs-layout'>{</span><span class='hs-varid'>hashline</span><span class='hs-keyglyph'>=</span><span class='hs-conid'>False</span><span class='hs-layout'>}</span>
<a name="line-103"></a> <span class='hs-layout'>,</span><span class='hs-varid'>includes</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Include</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>opt</span><span class='hs-keyglyph'>]</span>
<a name="line-104"></a> <span class='hs-layout'>,</span><span class='hs-varid'>defines</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>drop</span> <span class='hs-num'>1</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Define</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>opt</span><span class='hs-layout'>,</span> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>break</span> <span class='hs-layout'>(</span><span class='hs-varop'>==</span> <span class='hs-chr'>'='</span><span class='hs-layout'>)</span> <span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span>
<a name="line-105"></a> <span class='hs-layout'>}</span>
<a name="line-106"></a>
<a name="line-107"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>encoding</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>last</span> <span class='hs-varop'>$</span> <span class='hs-str'>""</span> <span class='hs-conop'>:</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Encoding</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>opt</span><span class='hs-keyglyph'>]</span>
<a name="line-108"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>encoding</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'>warnEncoding</span> <span class='hs-varid'>encoding</span>
<a name="line-109"></a>
<a name="line-110"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>languages</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getExtensions</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Language</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>opt</span><span class='hs-keyglyph'>]</span>
<a name="line-111"></a>
<a name="line-112"></a> <span class='hs-varid'>return</span> <span class='hs-conid'>Cmd</span>
<a name="line-113"></a> <span class='hs-layout'>{</span><span class='hs-varid'>cmdTest</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>test</span>
<a name="line-114"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdFiles</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>files</span>
<a name="line-115"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdHintFiles</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>hints</span>
<a name="line-116"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdReports</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Report</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>opt</span><span class='hs-keyglyph'>]</span>
<a name="line-117"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdIgnore</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Skip</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>opt</span><span class='hs-keyglyph'>]</span>
<a name="line-118"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdShowAll</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ShowAll</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>opt</span>
<a name="line-119"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdColor</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Color</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>opt</span>
<a name="line-120"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdCpphs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-conid'>CPP</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>languages</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>cpphs</span> <span class='hs-keyword'>else</span> <span class='hs-conid'>Nothing</span>
<a name="line-121"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdDataDir</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>dataDir</span>
<a name="line-122"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdEncoding</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>encoding</span>
<a name="line-123"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdFindHints</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>findHints</span>
<a name="line-124"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdLanguage</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>languages</span>
<a name="line-125"></a> <span class='hs-layout'>,</span><span class='hs-varid'>cmdQuiet</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Quiet</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>opt</span>
<a name="line-126"></a> <span class='hs-layout'>}</span>
<a name="line-127"></a>
<a name="line-128"></a>
<a name="line-129"></a><a name="exitWithHelp"></a><span class='hs-definition'>exitWithHelp</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span>
<a name="line-130"></a><span class='hs-definition'>exitWithHelp</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-131"></a> <span class='hs-varid'>putStr</span> <span class='hs-varid'>helpText</span>
<a name="line-132"></a> <span class='hs-varid'>exitWith</span> <span class='hs-conid'>ExitSuccess</span>
<a name="line-133"></a>
<a name="line-134"></a>
<a name="line-135"></a><a name="versionText"></a><span class='hs-definition'>versionText</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span>
<a name="line-136"></a><span class='hs-definition'>versionText</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"HLint v"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>showVersion</span> <span class='hs-varid'>version</span> <span class='hs-varop'>++</span> <span class='hs-str'>", (C) Neil Mitchell 2006-2010\n"</span>
<a name="line-137"></a>
<a name="line-138"></a>
<a name="line-139"></a><a name="helpText"></a><span class='hs-definition'>helpText</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span>
<a name="line-140"></a><span class='hs-definition'>helpText</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unlines</span>
<a name="line-141"></a> <span class='hs-keyglyph'>[</span><span class='hs-varid'>versionText</span>
<a name="line-142"></a> <span class='hs-layout'>,</span><span class='hs-str'>" hlint [files/directories] [options]"</span>
<a name="line-143"></a> <span class='hs-layout'>,</span><span class='hs-varid'>usageInfo</span> <span class='hs-str'>""</span> <span class='hs-varid'>opts</span>
<a name="line-144"></a> <span class='hs-layout'>,</span><span class='hs-str'>"HLint gives hints on how to improve Haskell code."</span>
<a name="line-145"></a> <span class='hs-layout'>,</span><span class='hs-str'>""</span>
<a name="line-146"></a> <span class='hs-layout'>,</span><span class='hs-str'>"To check all Haskell files in 'src' and generate a report type:"</span>
<a name="line-147"></a> <span class='hs-layout'>,</span><span class='hs-str'>" hlint src --report"</span>
<a name="line-148"></a> <span class='hs-keyglyph'>]</span>
<a name="line-149"></a>
<a name="line-150"></a>
<a name="line-151"></a><a name="getFile"></a><span class='hs-definition'>getFile</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'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>FilePath</span><span class='hs-keyglyph'>]</span>
<a name="line-152"></a><span class='hs-definition'>getFile</span> <span class='hs-varid'>exts</span> <span class='hs-varid'>file</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-153"></a> <span class='hs-varid'>b</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>doesDirectoryExist</span> <span class='hs-varid'>file</span>
<a name="line-154"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>b</span> <span class='hs-keyword'>then</span> <span class='hs-keyword'>do</span>
<a name="line-155"></a> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getDirectoryContentsRecursive</span> <span class='hs-varid'>file</span>
<a name="line-156"></a> <span class='hs-varid'>return</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>xs</span><span class='hs-layout'>,</span> <span class='hs-varid'>drop</span> <span class='hs-num'>1</span> <span class='hs-layout'>(</span><span class='hs-varid'>takeExtension</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>exts</span><span class='hs-keyglyph'>]</span>
<a name="line-157"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-158"></a> <span class='hs-varid'>b</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>doesFileExist</span> <span class='hs-varid'>file</span>
<a name="line-159"></a> <span class='hs-varid'>unless</span> <span class='hs-varid'>b</span> <span class='hs-varop'>$</span> <span class='hs-varid'>error</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Couldn't find file: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>file</span>
<a name="line-160"></a> <span class='hs-varid'>return</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>file</span><span class='hs-keyglyph'>]</span>
<a name="line-161"></a>
<a name="line-162"></a>
<a name="line-163"></a><a name="getHintFile"></a><span class='hs-definition'>getHintFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>FilePath</span>
<a name="line-164"></a><span class='hs-definition'>getHintFile</span> <span class='hs-varid'>dataDir</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-165"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>poss</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nub</span> <span class='hs-varop'>$</span> <span class='hs-varid'>concat</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span> <span class='hs-conop'>:</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span> <span class='hs-varop'><.></span> <span class='hs-str'>"hs"</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>takeExtension</span> <span class='hs-varid'>x</span> <span class='hs-varop'>/=</span> <span class='hs-str'>".hs"</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-varid'>dataDir</span> <span class='hs-varop'></></span> <span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span>
<a name="line-166"></a> <span class='hs-varid'>f</span> <span class='hs-varid'>poss</span> <span class='hs-varid'>poss</span>
<a name="line-167"></a> <span class='hs-keyword'>where</span>
<a name="line-168"></a> <span class='hs-varid'>f</span> <span class='hs-varid'>o</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-varop'>$</span> <span class='hs-varid'>unlines</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>[</span>
<a name="line-169"></a> <span class='hs-str'>"Couldn't find file: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>x</span><span class='hs-layout'>,</span>
<a name="line-170"></a> <span class='hs-str'>"Tried with:"</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-str'>" "</span><span class='hs-varop'>++</span><span class='hs-layout'>)</span> <span class='hs-varid'>o</span>
<a name="line-171"></a> <span class='hs-varid'>f</span> <span class='hs-varid'>o</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-keyword'>do</span>
<a name="line-172"></a> <span class='hs-varid'>b</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>doesFileExist</span> <span class='hs-varid'>x</span>
<a name="line-173"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>b</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>f</span> <span class='hs-varid'>o</span> <span class='hs-varid'>xs</span>
<a name="line-174"></a>
<a name="line-175"></a>
<a name="line-176"></a><a name="getExtensions"></a><span class='hs-definition'>getExtensions</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-keyglyph'>[</span><span class='hs-conid'>Extension</span><span class='hs-keyglyph'>]</span>
<a name="line-177"></a><span class='hs-definition'>getExtensions</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldl</span> <span class='hs-varid'>f</span> <span class='hs-varid'>defaultExtensions</span>
<a name="line-178"></a> <span class='hs-keyword'>where</span>
<a name="line-179"></a> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-str'>"Haskell98"</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-180"></a> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-chr'>'N'</span><span class='hs-conop'>:</span><span class='hs-chr'>'o'</span><span class='hs-conop'>:</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readExtension</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>delete</span> <span class='hs-varid'>x</span> <span class='hs-varid'>a</span>
<a name="line-181"></a> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readExtension</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:</span> <span class='hs-varid'>delete</span> <span class='hs-varid'>x</span> <span class='hs-varid'>a</span>
<a name="line-182"></a> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Unknown extension: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>x</span>
<a name="line-183"></a>
<a name="line-184"></a>
<a name="line-185"></a><a name="readExtension"></a><span class='hs-definition'>readExtension</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Extension</span>
<a name="line-186"></a><span class='hs-definition'>readExtension</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>classifyExtension</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>of</span>
<a name="line-187"></a> <span class='hs-conid'>UnknownExtension</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-188"></a> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-varid'>x</span>
</pre></body>
</html>
