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<title>src/Database/HaskellDB/DBDirect.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 : Database.HaskellDB.DBDirect</span>
<a name="line-4"></a><span class='hs-comment'>-- Copyright : Daan Leijen (c) 1999, daan@cs.uu.nl</span>
<a name="line-5"></a><span class='hs-comment'>-- HWT Group (c) 2003,</span>
<a name="line-6"></a><span class='hs-comment'>-- Bjorn Bringert (c) 2005-2006, bjorn@bringert.net</span>
<a name="line-7"></a><span class='hs-comment'>-- License : BSD-style</span>
<a name="line-8"></a><span class='hs-comment'>--</span>
<a name="line-9"></a><span class='hs-comment'>-- Maintainer : haskelldb-users@lists.sourceforge.net</span>
<a name="line-10"></a><span class='hs-comment'>-- Stability : experimental</span>
<a name="line-11"></a><span class='hs-comment'>-- Portability : portable</span>
<a name="line-12"></a><span class='hs-comment'>--</span>
<a name="line-13"></a><span class='hs-comment'>-- DBDirect generates a Haskell module from a database.</span>
<a name="line-14"></a><span class='hs-comment'>-- It first reads the system catalog of the database into</span>
<a name="line-15"></a><span class='hs-comment'>-- a 'Catalog' data type. After that it pretty prints that</span>
<a name="line-16"></a><span class='hs-comment'>-- data structure in an appropiate Haskell module which</span>
<a name="line-17"></a><span class='hs-comment'>-- can be used to perform queries on the database.</span>
<a name="line-18"></a><span class='hs-comment'>--</span>
<a name="line-19"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-20"></a>
<a name="line-21"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Database</span><span class='hs-varop'>.</span><span class='hs-conid'>HaskellDB</span><span class='hs-varop'>.</span><span class='hs-conid'>DBDirect</span> <span class='hs-layout'>(</span><span class='hs-varid'>dbdirect</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-22"></a>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Database</span><span class='hs-varop'>.</span><span class='hs-conid'>HaskellDB</span> <span class='hs-layout'>(</span><span class='hs-conid'>Database</span><span class='hs-layout'>,</span> <span class='hs-layout'>)</span>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Database</span><span class='hs-varop'>.</span><span class='hs-conid'>HaskellDB</span><span class='hs-varop'>.</span><span class='hs-conid'>DriverAPI</span> <span class='hs-layout'>(</span><span class='hs-conid'>DriverInterface</span><span class='hs-layout'>,</span> <span class='hs-varid'>connect</span><span class='hs-layout'>,</span> <span class='hs-varid'>requiredOptions</span><span class='hs-layout'>,</span> <span class='hs-layout'>)</span>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Database</span><span class='hs-varop'>.</span><span class='hs-conid'>HaskellDB</span><span class='hs-varop'>.</span><span class='hs-conid'>DBSpec</span> <span class='hs-layout'>(</span><span class='hs-varid'>dbToDBSpec</span><span class='hs-layout'>,</span> <span class='hs-varid'>dbname</span><span class='hs-layout'>)</span>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Database</span><span class='hs-varop'>.</span><span class='hs-conid'>HaskellDB</span><span class='hs-varop'>.</span><span class='hs-conid'>DBSpec</span><span class='hs-varop'>.</span><span class='hs-conid'>DBSpecToDBDirect</span> <span class='hs-layout'>(</span><span class='hs-varid'>dbInfoToModuleFiles</span><span class='hs-layout'>,</span> <span class='hs-layout'>)</span>
<a name="line-27"></a>
<a name="line-28"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Database</span><span class='hs-varop'>.</span><span class='hs-conid'>HaskellDB</span><span class='hs-varop'>.</span><span class='hs-conid'>DBSpec</span><span class='hs-varop'>.</span><span class='hs-conid'>PPHelpers</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>PP</span>
<a name="line-29"></a>
<a name="line-30"></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> <span class='hs-layout'>(</span><span class='hs-varid'>getOpt</span><span class='hs-layout'>,</span> <span class='hs-conid'>ArgOrder</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'>OptDescr</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'>ArgDescr</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'>usageInfo</span><span class='hs-layout'>,</span> <span class='hs-layout'>)</span>
<a name="line-31"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Environment</span> <span class='hs-layout'>(</span><span class='hs-varid'>getArgs</span><span class='hs-layout'>,</span> <span class='hs-varid'>getProgName</span><span class='hs-layout'>,</span> <span class='hs-layout'>)</span>
<a name="line-32"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Exit</span> <span class='hs-layout'>(</span><span class='hs-varid'>exitFailure</span><span class='hs-layout'>,</span> <span class='hs-layout'>)</span>
<a name="line-33"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-varid'>hPutStrLn</span><span class='hs-layout'>,</span> <span class='hs-varid'>stderr</span><span class='hs-layout'>,</span> <span class='hs-layout'>)</span>
<a name="line-34"></a>
<a name="line-35"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-varop'>.</span><span class='hs-conid'>Error</span> <span class='hs-conid'>()</span> <span class='hs-comment'>-- Monad instance for Either</span>
<a name="line-36"></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-layout'>)</span>
<a name="line-37"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span> <span class='hs-layout'>(</span><span class='hs-varid'>intersperse</span><span class='hs-layout'>,</span> <span class='hs-layout'>)</span>
<a name="line-38"></a>
<a name="line-39"></a>
<a name="line-40"></a><a name="createModules"></a><span class='hs-definition'>createModules</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PP</span><span class='hs-varop'>.</span><span class='hs-conid'>MakeIdentifiers</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Database</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-41"></a><span class='hs-definition'>createModules</span> <span class='hs-varid'>m</span> <span class='hs-varid'>dbName</span> <span class='hs-varid'>useBStrT</span> <span class='hs-varid'>mkIdent</span> <span class='hs-varid'>db</span> <span class='hs-keyglyph'>=</span>
<a name="line-42"></a> <span class='hs-keyword'>do</span>
<a name="line-43"></a> <span class='hs-varid'>putStrLn</span> <span class='hs-str'>"Getting database info..."</span>
<a name="line-44"></a> <span class='hs-varid'>spec</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>dbToDBSpec</span> <span class='hs-varid'>useBStrT</span> <span class='hs-varid'>mkIdent</span> <span class='hs-varid'>m</span> <span class='hs-varid'>db</span>
<a name="line-45"></a> <span class='hs-varid'>putStrLn</span> <span class='hs-str'>"Writing modules..."</span>
<a name="line-46"></a> <span class='hs-varid'>dbInfoToModuleFiles</span> <span class='hs-str'>"."</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>spec</span> <span class='hs-layout'>{</span><span class='hs-varid'>dbname</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>dbName</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-47"></a>
<a name="line-48"></a>
<a name="line-49"></a><a name="Flags"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Flags</span> <span class='hs-keyglyph'>=</span>
<a name="line-50"></a> <span class='hs-conid'>Flags</span> <span class='hs-layout'>{</span>
<a name="line-51"></a> <span class='hs-varid'>optHelp</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>,</span>
<a name="line-52"></a> <span class='hs-varid'>optBoundedStrings</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>,</span>
<a name="line-53"></a> <span class='hs-varid'>optIdentifierStyle</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PP</span><span class='hs-varop'>.</span><span class='hs-conid'>MakeIdentifiers</span>
<a name="line-54"></a> <span class='hs-layout'>}</span>
<a name="line-55"></a>
<a name="line-56"></a><a name="options"></a><span class='hs-definition'>options</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>OptDescr</span> <span class='hs-layout'>(</span><span class='hs-conid'>Flags</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Either</span> <span class='hs-conid'>String</span> <span class='hs-conid'>Flags</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-57"></a><span class='hs-definition'>options</span> <span class='hs-keyglyph'>=</span>
<a name="line-58"></a> <span class='hs-conid'>Option</span> <span class='hs-keyglyph'>[</span><span class='hs-chr'>'h'</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"help"</span><span class='hs-keyglyph'>]</span>
<a name="line-59"></a> <span class='hs-layout'>(</span><span class='hs-conid'>NoArg</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>flags</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Right</span> <span class='hs-varop'>$</span> <span class='hs-varid'>flags</span><span class='hs-layout'>{</span><span class='hs-varid'>optHelp</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-60"></a> <span class='hs-str'>"show options"</span> <span class='hs-conop'>:</span>
<a name="line-61"></a> <span class='hs-conid'>Option</span> <span class='hs-keyglyph'>[</span><span class='hs-chr'>'b'</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"bounded-strings"</span><span class='hs-keyglyph'>]</span>
<a name="line-62"></a> <span class='hs-layout'>(</span><span class='hs-conid'>NoArg</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>flags</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Right</span> <span class='hs-varop'>$</span> <span class='hs-varid'>flags</span><span class='hs-layout'>{</span><span class='hs-varid'>optBoundedStrings</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-63"></a> <span class='hs-str'>"use bounded string types"</span> <span class='hs-conop'>:</span>
<a name="line-64"></a> <span class='hs-conid'>Option</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"identifier-style"</span><span class='hs-keyglyph'>]</span>
<a name="line-65"></a> <span class='hs-layout'>(</span><span class='hs-conid'>ReqArg</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>str</span> <span class='hs-varid'>flags</span> <span class='hs-keyglyph'>-></span>
<a name="line-66"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>str</span> <span class='hs-keyword'>of</span>
<a name="line-67"></a> <span class='hs-str'>"preserve"</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Right</span> <span class='hs-varop'>$</span> <span class='hs-varid'>flags</span><span class='hs-layout'>{</span><span class='hs-varid'>optIdentifierStyle</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PP</span><span class='hs-varop'>.</span><span class='hs-varid'>mkIdentPreserving</span><span class='hs-layout'>}</span>
<a name="line-68"></a> <span class='hs-str'>"camel-case"</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Right</span> <span class='hs-varop'>$</span> <span class='hs-varid'>flags</span><span class='hs-layout'>{</span><span class='hs-varid'>optIdentifierStyle</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PP</span><span class='hs-varop'>.</span><span class='hs-varid'>mkIdentCamelCase</span><span class='hs-layout'>}</span>
<a name="line-69"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Left</span> <span class='hs-varop'>$</span> <span class='hs-str'>"unknown identifier style: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>str</span><span class='hs-layout'>)</span>
<a name="line-70"></a> <span class='hs-str'>"type"</span><span class='hs-layout'>)</span>
<a name="line-71"></a> <span class='hs-str'>"<type> is one of [preserve, camel-case]"</span> <span class='hs-conop'>:</span>
<a name="line-72"></a> <span class='hs-conid'>[]</span>
<a name="line-73"></a>
<a name="line-74"></a><a name="parseOptions"></a><span class='hs-definition'>parseOptions</span> <span class='hs-keyglyph'>::</span>
<a name="line-75"></a> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Flags</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Either</span> <span class='hs-conid'>String</span> <span class='hs-conid'>Flags</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Either</span> <span class='hs-conid'>String</span> <span class='hs-conid'>Flags</span>
<a name="line-76"></a><span class='hs-definition'>parseOptions</span> <span class='hs-keyglyph'>=</span>
<a name="line-77"></a> <span class='hs-varid'>foldr</span> <span class='hs-layout'>(</span><span class='hs-varop'>=<<</span><span class='hs-layout'>)</span>
<a name="line-78"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Right</span> <span class='hs-varop'>$</span>
<a name="line-79"></a> <span class='hs-conid'>Flags</span> <span class='hs-layout'>{</span><span class='hs-varid'>optHelp</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span><span class='hs-layout'>,</span>
<a name="line-80"></a> <span class='hs-varid'>optBoundedStrings</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span><span class='hs-layout'>,</span>
<a name="line-81"></a> <span class='hs-varid'>optIdentifierStyle</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PP</span><span class='hs-varop'>.</span><span class='hs-varid'>mkIdentPreserving</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-82"></a>
<a name="line-83"></a><a name="exitWithError"></a><span class='hs-definition'>exitWithError</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span>
<a name="line-84"></a><span class='hs-definition'>exitWithError</span> <span class='hs-varid'>msg</span> <span class='hs-keyglyph'>=</span>
<a name="line-85"></a> <span class='hs-varid'>hPutStrLn</span> <span class='hs-varid'>stderr</span> <span class='hs-varid'>msg</span> <span class='hs-varop'>>></span>
<a name="line-86"></a> <span class='hs-varid'>hPutStrLn</span> <span class='hs-varid'>stderr</span> <span class='hs-str'>"Try --help option to get detailed info."</span> <span class='hs-varop'>>></span>
<a name="line-87"></a> <span class='hs-varid'>exitFailure</span>
<a name="line-88"></a>
<a name="line-89"></a><a name="dbdirect"></a><span class='hs-definition'>dbdirect</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DriverInterface</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-90"></a><span class='hs-definition'>dbdirect</span> <span class='hs-varid'>driver</span> <span class='hs-keyglyph'>=</span>
<a name="line-91"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>putStrLn</span> <span class='hs-str'>"DB/Direct: Daan Leijen (c) 1999, HWT (c) 2003-2004,"</span>
<a name="line-92"></a> <span class='hs-varid'>putStrLn</span> <span class='hs-str'>" Bjorn Bringert (c) 2005-2007, Henning Thielemann (c) 2008"</span>
<a name="line-93"></a> <span class='hs-varid'>putStrLn</span> <span class='hs-str'>""</span>
<a name="line-94"></a>
<a name="line-95"></a> <span class='hs-varid'>argv</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getArgs</span>
<a name="line-96"></a> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>opts</span><span class='hs-layout'>,</span> <span class='hs-varid'>modAndDrvOpts</span><span class='hs-layout'>,</span> <span class='hs-varid'>errors</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getOpt</span> <span class='hs-conid'>RequireOrder</span> <span class='hs-varid'>options</span> <span class='hs-varid'>argv</span>
<a name="line-97"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-varid'>null</span> <span class='hs-varid'>errors</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-98"></a> <span class='hs-layout'>(</span><span class='hs-varid'>ioError</span> <span class='hs-varop'>.</span> <span class='hs-varid'>userError</span> <span class='hs-varop'>.</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>errors</span><span class='hs-layout'>)</span>
<a name="line-99"></a>
<a name="line-100"></a> <span class='hs-varid'>flags</span> <span class='hs-keyglyph'><-</span>
<a name="line-101"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>parseOptions</span> <span class='hs-varid'>opts</span> <span class='hs-keyword'>of</span>
<a name="line-102"></a> <span class='hs-conid'>Left</span> <span class='hs-varid'>errMsg</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>exitWithError</span> <span class='hs-varid'>errMsg</span>
<a name="line-103"></a> <span class='hs-conid'>Right</span> <span class='hs-varid'>flags</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>flags</span>
<a name="line-104"></a>
<a name="line-105"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>optHelp</span> <span class='hs-varid'>flags</span><span class='hs-layout'>)</span>
<a name="line-106"></a> <span class='hs-layout'>(</span><span class='hs-varid'>showHelp</span> <span class='hs-varid'>driver</span> <span class='hs-varop'>>></span> <span class='hs-varid'>exitFailure</span><span class='hs-layout'>)</span>
<a name="line-107"></a>
<a name="line-108"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>modAndDrvOpts</span> <span class='hs-keyword'>of</span>
<a name="line-109"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>exitWithError</span> <span class='hs-str'>"Missing module and driver options"</span>
<a name="line-110"></a> <span class='hs-keyglyph'>[</span><span class='hs-keyword'>_</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>exitWithError</span> <span class='hs-str'>"Missing driver options"</span>
<a name="line-111"></a> <span class='hs-keyglyph'>[</span><span class='hs-varid'>moduleName</span><span class='hs-layout'>,</span><span class='hs-varid'>dbname</span><span class='hs-layout'>,</span><span class='hs-varid'>drvOpts</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span>
<a name="line-112"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>putStrLn</span> <span class='hs-str'>"Connecting to database..."</span>
<a name="line-113"></a> <span class='hs-varid'>connect</span> <span class='hs-varid'>driver</span>
<a name="line-114"></a> <span class='hs-layout'>(</span><span class='hs-varid'>splitOptions</span> <span class='hs-varid'>drvOpts</span><span class='hs-layout'>)</span>
<a name="line-115"></a> <span class='hs-layout'>(</span><span class='hs-varid'>createModules</span> <span class='hs-varid'>moduleName</span> <span class='hs-varid'>dbname</span>
<a name="line-116"></a> <span class='hs-layout'>(</span><span class='hs-varid'>optBoundedStrings</span> <span class='hs-varid'>flags</span><span class='hs-layout'>)</span>
<a name="line-117"></a> <span class='hs-layout'>(</span><span class='hs-varid'>optIdentifierStyle</span> <span class='hs-varid'>flags</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-118"></a> <span class='hs-varid'>putStrLn</span> <span class='hs-str'>"Done!"</span>
<a name="line-119"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-conop'>:</span><span class='hs-varid'>restArgs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-120"></a> <span class='hs-varid'>exitWithError</span> <span class='hs-layout'>(</span><span class='hs-str'>"Unnecessary arguments: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>restArgs</span><span class='hs-layout'>)</span>
<a name="line-121"></a>
<a name="line-122"></a>
<a name="line-123"></a>
<a name="line-124"></a><a name="splitOptions"></a><span class='hs-definition'>splitOptions</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-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span><span class='hs-conid'>String</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-125"></a><span class='hs-definition'>splitOptions</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>split2</span> <span class='hs-chr'>'='</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>split</span> <span class='hs-chr'>','</span>
<a name="line-126"></a>
<a name="line-127"></a><a name="split"></a><span class='hs-definition'>split</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span>
<a name="line-128"></a><span class='hs-definition'>split</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-129"></a><span class='hs-definition'>split</span> <span class='hs-varid'>g</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>y</span> <span class='hs-conop'>:</span> <span class='hs-varid'>split</span> <span class='hs-varid'>g</span> <span class='hs-varid'>ys</span>
<a name="line-130"></a> <span class='hs-keyword'>where</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-layout'>,</span><span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>split2</span> <span class='hs-varid'>g</span> <span class='hs-varid'>xs</span>
<a name="line-131"></a>
<a name="line-132"></a><a name="split2"></a><span class='hs-definition'>split2</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span><span class='hs-conid'>String</span><span class='hs-layout'>)</span>
<a name="line-133"></a><span class='hs-definition'>split2</span> <span class='hs-varid'>g</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>ys</span><span class='hs-layout'>,</span> <span class='hs-varid'>drop</span> <span class='hs-num'>1</span> <span class='hs-varid'>zs</span><span class='hs-layout'>)</span>
<a name="line-134"></a> <span class='hs-keyword'>where</span> <span class='hs-layout'>(</span><span class='hs-varid'>ys</span><span class='hs-layout'>,</span><span class='hs-varid'>zs</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-varid'>g</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span>
<a name="line-135"></a>
<a name="line-136"></a><a name="showHelp"></a><span class='hs-comment'>-- | Shows usage information</span>
<a name="line-137"></a><span class='hs-definition'>showHelp</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DriverInterface</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-138"></a><span class='hs-definition'>showHelp</span> <span class='hs-varid'>driver</span> <span class='hs-keyglyph'>=</span>
<a name="line-139"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getProgName</span>
<a name="line-140"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>header</span> <span class='hs-keyglyph'>=</span>
<a name="line-141"></a> <span class='hs-str'>"Usage: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>p</span> <span class='hs-varop'>++</span> <span class='hs-str'>" [dbdirect-options] <module> <db-name> <driver-options>\n"</span>
<a name="line-142"></a> <span class='hs-varid'>footer</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unlines</span> <span class='hs-varop'>$</span>
<a name="line-143"></a> <span class='hs-str'>""</span> <span class='hs-conop'>:</span>
<a name="line-144"></a> <span class='hs-str'>"NOTE: You will probably have to specify the db name in both <driver-options> and <db-name>. This is because the driver options are specific to each database."</span> <span class='hs-conop'>:</span>
<a name="line-145"></a> <span class='hs-str'>""</span> <span class='hs-conop'>:</span>
<a name="line-146"></a> <span class='hs-str'>"module: Module name without an extension"</span> <span class='hs-conop'>:</span>
<a name="line-147"></a> <span class='hs-layout'>(</span><span class='hs-str'>"driver-options: "</span> <span class='hs-varop'>++</span>
<a name="line-148"></a> <span class='hs-layout'>(</span><span class='hs-varid'>concat</span> <span class='hs-varop'>.</span> <span class='hs-varid'>intersperse</span> <span class='hs-str'>","</span> <span class='hs-varop'>.</span>
<a name="line-149"></a> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>name</span><span class='hs-layout'>,</span><span class='hs-varid'>descr</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>name</span><span class='hs-varop'>++</span><span class='hs-str'>"=<"</span><span class='hs-varop'>++</span><span class='hs-varid'>descr</span><span class='hs-varop'>++</span><span class='hs-str'>">"</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span>
<a name="line-150"></a> <span class='hs-varid'>requiredOptions</span><span class='hs-layout'>)</span> <span class='hs-varid'>driver</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span>
<a name="line-151"></a> <span class='hs-conid'>[]</span>
<a name="line-152"></a> <span class='hs-varid'>hPutStrLn</span> <span class='hs-varid'>stderr</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-varid'>usageInfo</span> <span class='hs-varid'>header</span> <span class='hs-varid'>options</span> <span class='hs-varop'>++</span> <span class='hs-varid'>footer</span><span class='hs-layout'>)</span>
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