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<pre><a name="line-1"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ConfigFile</span><span class='hs-varop'>.</span><span class='hs-conid'>Monadic</span> <span class='hs-layout'>(</span>
<a name="line-2"></a> <span class='hs-comment'>-- * Overview</span>
<a name="line-3"></a> <span class='hs-comment'>-- $overview</span>
<a name="line-4"></a>
<a name="line-5"></a> <span class='hs-keyword'>module</span> <span class='hs-conid'>Reexporting</span><span class='hs-layout'>,</span>
<a name="line-6"></a> <span class='hs-varid'>simpleAccess</span><span class='hs-layout'>,</span>
<a name="line-7"></a> <span class='hs-varid'>interpolatingAccess</span><span class='hs-layout'>,</span>
<a name="line-8"></a> <span class='hs-varid'>readfile</span><span class='hs-layout'>,</span> <span class='hs-varid'>readhandle</span><span class='hs-layout'>,</span> <span class='hs-varid'>readstring</span><span class='hs-layout'>,</span>
<a name="line-9"></a> <span class='hs-varid'>has_section</span><span class='hs-layout'>,</span> <span class='hs-varid'>options</span><span class='hs-layout'>,</span> <span class='hs-varid'>has_option</span><span class='hs-layout'>,</span> <span class='hs-varid'>items</span><span class='hs-layout'>,</span>
<a name="line-10"></a> <span class='hs-varid'>set</span><span class='hs-layout'>,</span> <span class='hs-varid'>setshow</span><span class='hs-layout'>,</span> <span class='hs-varid'>remove_option</span><span class='hs-layout'>,</span> <span class='hs-varid'>add_section</span><span class='hs-layout'>,</span> <span class='hs-varid'>remove_section</span>
<a name="line-11"></a><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-12"></a>
<a name="line-13"></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>
<a name="line-14"></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-conid'>Handle</span><span class='hs-layout'>)</span>
<a name="line-15"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ConfigFile</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Reexporting</span> <span class='hs-layout'>(</span><span class='hs-conid'>SectionSpec</span><span class='hs-layout'>,</span> <span class='hs-conid'>OptionSpec</span><span class='hs-layout'>,</span> <span class='hs-conid'>ConfigParser</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-16"></a> <span class='hs-conid'>CPErrorData</span><span class='hs-layout'>,</span> <span class='hs-conid'>CPError</span><span class='hs-layout'>,</span> <span class='hs-varid'>emptyCP</span><span class='hs-layout'>,</span> <span class='hs-conid'>Get_C</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'>sections</span><span class='hs-layout'>,</span> <span class='hs-varid'>merge</span><span class='hs-layout'>,</span> <span class='hs-varid'>to_string</span><span class='hs-layout'>)</span>
<a name="line-17"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ConfigFile</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>C</span>
<a name="line-18"></a>
<a name="line-19"></a><span class='hs-comment'>{- $overview
<a name="line-20"></a>This module reexports a slightly different version of the standard API which makes it more convenient for chaining monadically. Everywhere a 'ConfigParser' was the first argument in a function in the standard API, it is now the last. This lets you rewrite
<a name="line-21"></a>
<a name="line-22"></a>> do let cp = emptyCP
<a name="line-23"></a>> cp <- add_section cp "sect1"
<a name="line-24"></a>> cp <- set cp "sect1" "opt1" "foo"
<a name="line-25"></a>> cp <- set cp "sect1" "opt2" "bar"
<a name="line-26"></a>> options cp "sect1"
<a name="line-27"></a>
<a name="line-28"></a>as
<a name="line-29"></a>
<a name="line-30"></a>> return emptyCP >>=
<a name="line-31"></a>> add_section "sect1" >>=
<a name="line-32"></a>> set "sect1" "opt1" "foo" >>=
<a name="line-33"></a>> set "sect1" "opt2" "bar" >>=
<a name="line-34"></a>> options "sect1"
<a name="line-35"></a>
<a name="line-36"></a>which may be more elegant in some cases. A future development might be to chain the 'ConfigParser' implicitly with a state monad, which would be yet more elegant.
<a name="line-37"></a>
<a name="line-38"></a>-}</span>
<a name="line-39"></a>
<a name="line-40"></a><a name="simpleAccess"></a><span class='hs-definition'>simpleAccess</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MonadError</span> <span class='hs-conid'>CPError</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span>
<a name="line-41"></a> <span class='hs-conid'>SectionSpec</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>OptionSpec</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ConfigParser</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>String</span>
<a name="line-42"></a><span class='hs-definition'>simpleAccess</span> <span class='hs-varid'>s</span> <span class='hs-varid'>o</span> <span class='hs-varid'>cp</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>simpleAccess</span> <span class='hs-varid'>cp</span> <span class='hs-varid'>s</span> <span class='hs-varid'>o</span>
<a name="line-43"></a>
<a name="line-44"></a><a name="interpolatingAccess"></a><span class='hs-definition'>interpolatingAccess</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MonadError</span> <span class='hs-conid'>CPError</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span>
<a name="line-45"></a> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span>
<a name="line-46"></a> <span class='hs-conid'>SectionSpec</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>OptionSpec</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ConfigParser</span>
<a name="line-47"></a> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>String</span>
<a name="line-48"></a><span class='hs-definition'>interpolatingAccess</span> <span class='hs-varid'>maxdepth</span> <span class='hs-varid'>s</span> <span class='hs-varid'>o</span> <span class='hs-varid'>cp</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>interpolatingAccess</span> <span class='hs-varid'>maxdepth</span> <span class='hs-varid'>cp</span> <span class='hs-varid'>s</span> <span class='hs-varid'>o</span>
<a name="line-49"></a>
<a name="line-50"></a><a name="readfile"></a><span class='hs-definition'>readfile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MonadError</span> <span class='hs-conid'>CPError</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ConfigParser</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-varid'>m</span> <span class='hs-conid'>ConfigParser</span><span class='hs-layout'>)</span>
<a name="line-51"></a><span class='hs-definition'>readfile</span> <span class='hs-varid'>fp</span> <span class='hs-varid'>cp</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>readfile</span> <span class='hs-varid'>cp</span> <span class='hs-varid'>fp</span>
<a name="line-52"></a>
<a name="line-53"></a><a name="readhandle"></a><span class='hs-definition'>readhandle</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MonadError</span> <span class='hs-conid'>CPError</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Handle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ConfigParser</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-varid'>m</span> <span class='hs-conid'>ConfigParser</span><span class='hs-layout'>)</span>
<a name="line-54"></a><span class='hs-definition'>readhandle</span> <span class='hs-varid'>h</span> <span class='hs-varid'>cp</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>readhandle</span> <span class='hs-varid'>cp</span> <span class='hs-varid'>h</span>
<a name="line-55"></a>
<a name="line-56"></a><a name="readstring"></a><span class='hs-definition'>readstring</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MonadError</span> <span class='hs-conid'>CPError</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span>
<a name="line-57"></a> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ConfigParser</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>ConfigParser</span>
<a name="line-58"></a><span class='hs-definition'>readstring</span> <span class='hs-varid'>cp</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>readstring</span> <span class='hs-varid'>s</span> <span class='hs-varid'>cp</span>
<a name="line-59"></a>
<a name="line-60"></a><a name="has_section"></a><span class='hs-definition'>has_section</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SectionSpec</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ConfigParser</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-61"></a><span class='hs-definition'>has_section</span> <span class='hs-varid'>x</span> <span class='hs-varid'>cp</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>has_section</span> <span class='hs-varid'>cp</span> <span class='hs-varid'>x</span>
<a name="line-62"></a>
<a name="line-63"></a><a name="add_section"></a><span class='hs-definition'>add_section</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MonadError</span> <span class='hs-conid'>CPError</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span>
<a name="line-64"></a> <span class='hs-conid'>SectionSpec</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ConfigParser</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>ConfigParser</span>
<a name="line-65"></a><span class='hs-definition'>add_section</span> <span class='hs-varid'>s</span> <span class='hs-varid'>cp</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>add_section</span> <span class='hs-varid'>cp</span> <span class='hs-varid'>s</span>
<a name="line-66"></a>
<a name="line-67"></a><a name="options"></a><span class='hs-definition'>options</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MonadError</span> <span class='hs-conid'>CPError</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span>
<a name="line-68"></a> <span class='hs-conid'>SectionSpec</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ConfigParser</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>OptionSpec</span><span class='hs-keyglyph'>]</span>
<a name="line-69"></a><span class='hs-definition'>options</span> <span class='hs-varid'>x</span> <span class='hs-varid'>cp</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>options</span> <span class='hs-varid'>cp</span> <span class='hs-varid'>x</span>
<a name="line-70"></a>
<a name="line-71"></a><a name="has_option"></a><span class='hs-definition'>has_option</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SectionSpec</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>OptionSpec</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ConfigParser</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-72"></a><span class='hs-definition'>has_option</span> <span class='hs-varid'>s</span> <span class='hs-varid'>o</span> <span class='hs-varid'>cp</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>has_option</span> <span class='hs-varid'>cp</span> <span class='hs-varid'>s</span> <span class='hs-varid'>o</span>
<a name="line-73"></a>
<a name="line-74"></a><a name="items"></a><span class='hs-definition'>items</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MonadError</span> <span class='hs-conid'>CPError</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span>
<a name="line-75"></a> <span class='hs-conid'>SectionSpec</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ConfigParser</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>OptionSpec</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-76"></a><span class='hs-definition'>items</span> <span class='hs-varid'>s</span> <span class='hs-varid'>cp</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>items</span> <span class='hs-varid'>cp</span> <span class='hs-varid'>s</span>
<a name="line-77"></a>
<a name="line-78"></a><a name="set"></a><span class='hs-definition'>set</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MonadError</span> <span class='hs-conid'>CPError</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span>
<a name="line-79"></a> <span class='hs-conid'>SectionSpec</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>OptionSpec</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ConfigParser</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>ConfigParser</span>
<a name="line-80"></a><span class='hs-definition'>set</span> <span class='hs-varid'>s</span> <span class='hs-varid'>passedo</span> <span class='hs-varid'>val</span> <span class='hs-varid'>cp</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>set</span> <span class='hs-varid'>cp</span> <span class='hs-varid'>s</span> <span class='hs-varid'>passedo</span> <span class='hs-varid'>val</span>
<a name="line-81"></a>
<a name="line-82"></a><a name="setshow"></a><span class='hs-definition'>setshow</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>MonadError</span> <span class='hs-conid'>CPError</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span>
<a name="line-83"></a> <span class='hs-conid'>SectionSpec</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>OptionSpec</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ConfigParser</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>ConfigParser</span>
<a name="line-84"></a><span class='hs-definition'>setshow</span> <span class='hs-varid'>s</span> <span class='hs-varid'>o</span> <span class='hs-varid'>val</span> <span class='hs-varid'>cp</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>setshow</span> <span class='hs-varid'>cp</span> <span class='hs-varid'>s</span> <span class='hs-varid'>o</span> <span class='hs-varid'>val</span>
<a name="line-85"></a>
<a name="line-86"></a><a name="remove_option"></a><span class='hs-definition'>remove_option</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MonadError</span> <span class='hs-conid'>CPError</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span>
<a name="line-87"></a> <span class='hs-conid'>SectionSpec</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>OptionSpec</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ConfigParser</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>ConfigParser</span>
<a name="line-88"></a><span class='hs-definition'>remove_option</span> <span class='hs-varid'>s</span> <span class='hs-varid'>passedo</span> <span class='hs-varid'>cp</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>remove_option</span> <span class='hs-varid'>cp</span> <span class='hs-varid'>s</span> <span class='hs-varid'>passedo</span>
<a name="line-89"></a>
<a name="line-90"></a>
<a name="line-91"></a><a name="remove_section"></a><span class='hs-definition'>remove_section</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MonadError</span> <span class='hs-conid'>CPError</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span>
<a name="line-92"></a> <span class='hs-conid'>SectionSpec</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ConfigParser</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>ConfigParser</span>
<a name="line-93"></a><span class='hs-definition'>remove_section</span> <span class='hs-varid'>s</span> <span class='hs-varid'>cp</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>remove_section</span> <span class='hs-varid'>cp</span> <span class='hs-varid'>s</span>
<a name="line-94"></a>
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