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<pre><a name="line-1"></a><span class='hs-comment'>-- | You don't need to import this module to enable bash completion.</span>
<a name="line-2"></a><span class='hs-comment'>--</span>
<a name="line-3"></a><span class='hs-comment'>-- See</span>
<a name="line-4"></a><span class='hs-comment'>-- <<a href="http://github.com/pcapriotti/optparse-applicative/wiki/Bash-Completion">http://github.com/pcapriotti/optparse-applicative/wiki/Bash-Completion</a> the wiki></span>
<a name="line-5"></a><span class='hs-comment'>-- for more information on bash completion.</span>
<a name="line-6"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Options</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span><span class='hs-varop'>.</span><span class='hs-conid'>BashCompletion</span>
<a name="line-7"></a> <span class='hs-layout'>(</span> <span class='hs-varid'>bashCompletionParser</span>
<a name="line-8"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-9"></a>
<a name="line-10"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'><$></span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'><*></span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>many</span><span class='hs-layout'>)</span>
<a name="line-11"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Foldable</span> <span class='hs-layout'>(</span><span class='hs-varid'>asum</span><span class='hs-layout'>)</span>
<a name="line-12"></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'>isPrefixOf</span><span class='hs-layout'>)</span>
<a name="line-13"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromMaybe</span><span class='hs-layout'>,</span> <span class='hs-varid'>listToMaybe</span><span class='hs-layout'>)</span>
<a name="line-14"></a>
<a name="line-15"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Options</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span><span class='hs-varop'>.</span><span class='hs-conid'>Builder</span>
<a name="line-16"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Options</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span><span class='hs-varop'>.</span><span class='hs-conid'>Common</span>
<a name="line-17"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Options</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span>
<a name="line-18"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Options</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span>
<a name="line-19"></a>
<a name="line-20"></a><a name="bashCompletionParser"></a><span class='hs-definition'>bashCompletionParser</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ParserInfo</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ParserPrefs</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>CompletionResult</span>
<a name="line-21"></a><span class='hs-definition'>bashCompletionParser</span> <span class='hs-varid'>pinfo</span> <span class='hs-varid'>pprefs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>complParser</span>
<a name="line-22"></a> <span class='hs-keyword'>where</span>
<a name="line-23"></a> <span class='hs-varid'>failure</span> <span class='hs-varid'>opts</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>CompletionResult</span>
<a name="line-24"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>execCompletion</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>progn</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unlines</span> <span class='hs-varop'><$></span> <span class='hs-varid'>opts</span> <span class='hs-varid'>progn</span> <span class='hs-layout'>}</span>
<a name="line-25"></a>
<a name="line-26"></a> <span class='hs-varid'>complParser</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>asum</span>
<a name="line-27"></a> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>failure</span> <span class='hs-varop'><$></span>
<a name="line-28"></a> <span class='hs-layout'>(</span> <span class='hs-varid'>bashCompletionQuery</span> <span class='hs-varid'>pinfo</span> <span class='hs-varid'>pprefs</span>
<a name="line-29"></a> <span class='hs-varop'><$></span> <span class='hs-layout'>(</span><span class='hs-varid'>many</span> <span class='hs-varop'>.</span> <span class='hs-varid'>strOption</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>long</span> <span class='hs-str'>"bash-completion-word"</span>
<a name="line-30"></a> <span class='hs-varop'>`mappend`</span> <span class='hs-varid'>internal</span><span class='hs-layout'>)</span>
<a name="line-31"></a> <span class='hs-varop'><*></span> <span class='hs-varid'>option</span> <span class='hs-varid'>auto</span> <span class='hs-layout'>(</span><span class='hs-varid'>long</span> <span class='hs-str'>"bash-completion-index"</span> <span class='hs-varop'>`mappend`</span> <span class='hs-varid'>internal</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-32"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>failure</span> <span class='hs-varop'><$></span>
<a name="line-33"></a> <span class='hs-layout'>(</span><span class='hs-varid'>bashCompletionScript</span> <span class='hs-varop'><$></span>
<a name="line-34"></a> <span class='hs-varid'>strOption</span> <span class='hs-layout'>(</span><span class='hs-varid'>long</span> <span class='hs-str'>"bash-completion-script"</span> <span class='hs-varop'>`mappend`</span> <span class='hs-varid'>internal</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>]</span>
<a name="line-35"></a>
<a name="line-36"></a><a name="bashCompletionQuery"></a><span class='hs-definition'>bashCompletionQuery</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ParserInfo</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ParserPrefs</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'>Int</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-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span>
<a name="line-37"></a><span class='hs-definition'>bashCompletionQuery</span> <span class='hs-varid'>pinfo</span> <span class='hs-varid'>pprefs</span> <span class='hs-varid'>ws</span> <span class='hs-varid'>i</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>runCompletion</span> <span class='hs-varid'>compl</span> <span class='hs-varid'>pprefs</span> <span class='hs-keyword'>of</span>
<a name="line-38"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>Left</span> <span class='hs-layout'>(</span><span class='hs-conid'>SomeParser</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>list_options</span> <span class='hs-varid'>p</span>
<a name="line-39"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>Right</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>run_completer</span> <span class='hs-varid'>c</span>
<a name="line-40"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>[]</span>
<a name="line-41"></a> <span class='hs-keyword'>where</span>
<a name="line-42"></a> <span class='hs-varid'>list_options</span> <span class='hs-keyglyph'>=</span>
<a name="line-43"></a> <span class='hs-varid'>fmap</span> <span class='hs-varid'>concat</span>
<a name="line-44"></a> <span class='hs-varop'>.</span> <span class='hs-varid'>sequence</span>
<a name="line-45"></a> <span class='hs-varop'>.</span> <span class='hs-varid'>mapParser</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-varid'>opt_completions</span><span class='hs-layout'>)</span>
<a name="line-46"></a>
<a name="line-47"></a> <span class='hs-varid'>opt_completions</span> <span class='hs-varid'>opt</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>optMain</span> <span class='hs-varid'>opt</span> <span class='hs-keyword'>of</span>
<a name="line-48"></a> <span class='hs-conid'>OptReader</span> <span class='hs-varid'>ns</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>show_names</span> <span class='hs-varid'>ns</span>
<a name="line-49"></a> <span class='hs-conid'>FlagReader</span> <span class='hs-varid'>ns</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>show_names</span> <span class='hs-varid'>ns</span>
<a name="line-50"></a> <span class='hs-conid'>ArgReader</span> <span class='hs-varid'>rdr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>run_completer</span> <span class='hs-layout'>(</span><span class='hs-varid'>crCompleter</span> <span class='hs-varid'>rdr</span><span class='hs-layout'>)</span>
<a name="line-51"></a> <span class='hs-conid'>CmdReader</span> <span class='hs-varid'>ns</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>filter_names</span> <span class='hs-varid'>ns</span>
<a name="line-52"></a>
<a name="line-53"></a> <span class='hs-varid'>show_name</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>OptName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-54"></a> <span class='hs-varid'>show_name</span> <span class='hs-layout'>(</span><span class='hs-conid'>OptShort</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-chr'>'-'</span><span class='hs-conop'>:</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>c</span><span class='hs-keyglyph'>]</span>
<a name="line-55"></a> <span class='hs-varid'>show_name</span> <span class='hs-layout'>(</span><span class='hs-conid'>OptLong</span> <span class='hs-varid'>name</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"--"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>name</span>
<a name="line-56"></a>
<a name="line-57"></a> <span class='hs-varid'>show_names</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>OptName</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span>
<a name="line-58"></a> <span class='hs-varid'>show_names</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>filter_names</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-varid'>show_name</span>
<a name="line-59"></a>
<a name="line-60"></a> <span class='hs-varid'>filter_names</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'>String</span><span class='hs-keyglyph'>]</span>
<a name="line-61"></a> <span class='hs-varid'>filter_names</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>filter</span> <span class='hs-varid'>is_completion</span>
<a name="line-62"></a>
<a name="line-63"></a> <span class='hs-varid'>run_completer</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Completer</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-64"></a> <span class='hs-varid'>run_completer</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runCompleter</span> <span class='hs-varid'>c</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromMaybe</span> <span class='hs-str'>""</span> <span class='hs-layout'>(</span><span class='hs-varid'>listToMaybe</span> <span class='hs-varid'>ws''</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-65"></a>
<a name="line-66"></a> <span class='hs-layout'>(</span><span class='hs-varid'>ws'</span><span class='hs-layout'>,</span> <span class='hs-varid'>ws''</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>splitAt</span> <span class='hs-varid'>i</span> <span class='hs-varid'>ws</span>
<a name="line-67"></a>
<a name="line-68"></a> <span class='hs-varid'>is_completion</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-69"></a> <span class='hs-varid'>is_completion</span> <span class='hs-keyglyph'>=</span>
<a name="line-70"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>ws''</span> <span class='hs-keyword'>of</span>
<a name="line-71"></a> <span class='hs-varid'>w</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>isPrefixOf</span> <span class='hs-varid'>w</span>
<a name="line-72"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>const</span> <span class='hs-conid'>True</span>
<a name="line-73"></a>
<a name="line-74"></a> <span class='hs-varid'>compl</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runParserInfo</span> <span class='hs-varid'>pinfo</span> <span class='hs-layout'>(</span><span class='hs-varid'>drop</span> <span class='hs-num'>1</span> <span class='hs-varid'>ws'</span><span class='hs-layout'>)</span>
<a name="line-75"></a>
<a name="line-76"></a><a name="bashCompletionScript"></a><span class='hs-definition'>bashCompletionScript</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'>IO</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span>
<a name="line-77"></a><span class='hs-definition'>bashCompletionScript</span> <span class='hs-varid'>prog</span> <span class='hs-varid'>progn</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span>
<a name="line-78"></a> <span class='hs-keyglyph'>[</span> <span class='hs-str'>"_"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>progn</span> <span class='hs-varop'>++</span> <span class='hs-str'>"()"</span>
<a name="line-79"></a> <span class='hs-layout'>,</span> <span class='hs-str'>"{"</span>
<a name="line-80"></a> <span class='hs-layout'>,</span> <span class='hs-str'>" local cmdline"</span>
<a name="line-81"></a> <span class='hs-layout'>,</span> <span class='hs-str'>" CMDLINE=(--bash-completion-index $COMP_CWORD)"</span>
<a name="line-82"></a> <span class='hs-layout'>,</span> <span class='hs-str'>""</span>
<a name="line-83"></a> <span class='hs-layout'>,</span> <span class='hs-str'>" for arg in ${COMP_WORDS[@]}; do"</span>
<a name="line-84"></a> <span class='hs-layout'>,</span> <span class='hs-str'>" CMDLINE=(${CMDLINE[@]} --bash-completion-word $arg)"</span>
<a name="line-85"></a> <span class='hs-layout'>,</span> <span class='hs-str'>" done"</span>
<a name="line-86"></a> <span class='hs-layout'>,</span> <span class='hs-str'>""</span>
<a name="line-87"></a> <span class='hs-layout'>,</span> <span class='hs-str'>" COMPREPLY=( $("</span> <span class='hs-varop'>++</span> <span class='hs-varid'>prog</span> <span class='hs-varop'>++</span> <span class='hs-str'>" \"${CMDLINE[@]}\") )"</span>
<a name="line-88"></a> <span class='hs-layout'>,</span> <span class='hs-str'>"}"</span>
<a name="line-89"></a> <span class='hs-layout'>,</span> <span class='hs-str'>""</span>
<a name="line-90"></a> <span class='hs-layout'>,</span> <span class='hs-str'>"complete -o filenames -F _"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>progn</span> <span class='hs-varop'>++</span> <span class='hs-str'>" "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>progn</span> <span class='hs-keyglyph'>]</span>
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