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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE CPP #-}</span>
<a name="line-2"></a><span class='hs-comment'>{-
<a name="line-3"></a>Copyright (C) 2013-2015 John MacFarlane <jgm@berkeley.edu>
<a name="line-4"></a>
<a name="line-5"></a>This program is free software; you can redistribute it and/or modify
<a name="line-6"></a>it under the terms of the GNU General Public License as published by
<a name="line-7"></a>the Free Software Foundation; either version 2 of the License, or
<a name="line-8"></a>(at your option) any later version.
<a name="line-9"></a>
<a name="line-10"></a>This program is distributed in the hope that it will be useful,
<a name="line-11"></a>but WITHOUT ANY WARRANTY; without even the implied warranty of
<a name="line-12"></a>MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
<a name="line-13"></a>GNU General Public License for more details.
<a name="line-14"></a>
<a name="line-15"></a>You should have received a copy of the GNU General Public License
<a name="line-16"></a>along with this program; if not, write to the Free Software
<a name="line-17"></a>Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
<a name="line-18"></a>-}</span>
<a name="line-19"></a>
<a name="line-20"></a><span class='hs-comment'>{- |
<a name="line-21"></a> Module : Text.Pandoc.Writers.OPML
<a name="line-22"></a> Copyright : Copyright (C) 2013-2015 John MacFarlane
<a name="line-23"></a> License : GNU GPL, version 2 or above
<a name="line-24"></a>
<a name="line-25"></a> Maintainer : John MacFarlane <jgm@berkeley.edu>
<a name="line-26"></a> Stability : alpha
<a name="line-27"></a> Portability : portable
<a name="line-28"></a>
<a name="line-29"></a>Conversion of 'Pandoc' documents to OPML XML.
<a name="line-30"></a>-}</span>
<a name="line-31"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Pandoc</span><span class='hs-varop'>.</span><span class='hs-conid'>Writers</span><span class='hs-varop'>.</span><span class='hs-conid'>OPML</span> <span class='hs-layout'>(</span> <span class='hs-varid'>writeOPML</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-32"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Pandoc</span><span class='hs-varop'>.</span><span class='hs-conid'>Definition</span>
<a name="line-33"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Pandoc</span><span class='hs-varop'>.</span><span class='hs-conid'>XML</span>
<a name="line-34"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Pandoc</span><span class='hs-varop'>.</span><span class='hs-conid'>Writers</span><span class='hs-varop'>.</span><span class='hs-conid'>Shared</span>
<a name="line-35"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Pandoc</span><span class='hs-varop'>.</span><span class='hs-conid'>Shared</span>
<a name="line-36"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Pandoc</span><span class='hs-varop'>.</span><span class='hs-conid'>Options</span>
<a name="line-37"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Pandoc</span><span class='hs-varop'>.</span><span class='hs-conid'>Templates</span> <span class='hs-layout'>(</span><span class='hs-varid'>renderTemplate'</span><span class='hs-layout'>)</span>
<a name="line-38"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Pandoc</span><span class='hs-varop'>.</span><span class='hs-conid'>Writers</span><span class='hs-varop'>.</span><span class='hs-conid'>HTML</span> <span class='hs-layout'>(</span><span class='hs-varid'>writeHtmlString</span><span class='hs-layout'>)</span>
<a name="line-39"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Pandoc</span><span class='hs-varop'>.</span><span class='hs-conid'>Writers</span><span class='hs-varop'>.</span><span class='hs-conid'>Markdown</span> <span class='hs-layout'>(</span><span class='hs-varid'>writeMarkdown</span><span class='hs-layout'>)</span>
<a name="line-40"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Pandoc</span><span class='hs-varop'>.</span><span class='hs-conid'>Pretty</span>
<a name="line-41"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Pandoc</span><span class='hs-varop'>.</span><span class='hs-conid'>Compat</span><span class='hs-varop'>.</span><span class='hs-conid'>Time</span>
<a name="line-42"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Pandoc</span><span class='hs-varop'>.</span><span class='hs-conid'>Builder</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>B</span>
<a name="line-43"></a>
<a name="line-44"></a><a name="writeOPML"></a><span class='hs-comment'>-- | Convert Pandoc document to string in OPML format.</span>
<a name="line-45"></a><span class='hs-definition'>writeOPML</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>WriterOptions</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Pandoc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-46"></a><span class='hs-definition'>writeOPML</span> <span class='hs-varid'>opts</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pandoc</span> <span class='hs-varid'>meta</span> <span class='hs-varid'>blocks</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-47"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>elements</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>hierarchicalize</span> <span class='hs-varid'>blocks</span>
<a name="line-48"></a> <span class='hs-varid'>colwidth</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>writerWrapText</span> <span class='hs-varid'>opts</span> <span class='hs-varop'>==</span> <span class='hs-conid'>WrapAuto</span>
<a name="line-49"></a> <span class='hs-keyword'>then</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>writerColumns</span> <span class='hs-varid'>opts</span>
<a name="line-50"></a> <span class='hs-keyword'>else</span> <span class='hs-conid'>Nothing</span>
<a name="line-51"></a> <span class='hs-varid'>meta'</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>setMeta</span> <span class='hs-str'>"date"</span> <span class='hs-layout'>(</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>str</span> <span class='hs-varop'>$</span> <span class='hs-varid'>convertDate</span> <span class='hs-varop'>$</span> <span class='hs-varid'>docDate</span> <span class='hs-varid'>meta</span><span class='hs-layout'>)</span> <span class='hs-varid'>meta</span>
<a name="line-52"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>metadata</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>metaToJSON</span> <span class='hs-varid'>opts</span>
<a name="line-53"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varop'>.</span> <span class='hs-varid'>writeMarkdown</span> <span class='hs-varid'>def</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Pandoc</span> <span class='hs-varid'>nullMeta</span><span class='hs-layout'>)</span>
<a name="line-54"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varop'>.</span> <span class='hs-varid'>trimr</span> <span class='hs-varop'>.</span> <span class='hs-varid'>writeMarkdown</span> <span class='hs-varid'>def</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Pandoc</span> <span class='hs-varid'>nullMeta</span> <span class='hs-varop'>.</span>
<a name="line-55"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>ils</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Plain</span> <span class='hs-varid'>ils</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-56"></a> <span class='hs-varid'>meta'</span>
<a name="line-57"></a> <span class='hs-varid'>main</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>render</span> <span class='hs-varid'>colwidth</span> <span class='hs-varop'>$</span> <span class='hs-varid'>vcat</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>elementToOPML</span> <span class='hs-varid'>opts</span><span class='hs-layout'>)</span> <span class='hs-varid'>elements</span><span class='hs-layout'>)</span>
<a name="line-58"></a> <span class='hs-varid'>context</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defField</span> <span class='hs-str'>"body"</span> <span class='hs-varid'>main</span> <span class='hs-varid'>metadata</span>
<a name="line-59"></a> <span class='hs-keyword'>in</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>writerStandalone</span> <span class='hs-varid'>opts</span>
<a name="line-60"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>renderTemplate'</span> <span class='hs-layout'>(</span><span class='hs-varid'>writerTemplate</span> <span class='hs-varid'>opts</span><span class='hs-layout'>)</span> <span class='hs-varid'>context</span>
<a name="line-61"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>main</span>
<a name="line-62"></a>
<a name="line-63"></a><a name="writeHtmlInlines"></a><span class='hs-definition'>writeHtmlInlines</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Inline</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-64"></a><span class='hs-definition'>writeHtmlInlines</span> <span class='hs-varid'>ils</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>trim</span> <span class='hs-varop'>$</span> <span class='hs-varid'>writeHtmlString</span> <span class='hs-varid'>def</span>
<a name="line-65"></a> <span class='hs-varop'>$</span> <span class='hs-conid'>Pandoc</span> <span class='hs-varid'>nullMeta</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Plain</span> <span class='hs-varid'>ils</span><span class='hs-keyglyph'>]</span>
<a name="line-66"></a>
<a name="line-67"></a><a name="showDateTimeRFC822"></a><span class='hs-comment'>-- date format: RFC 822: Thu, 14 Jul 2005 23:41:05 GMT</span>
<a name="line-68"></a><span class='hs-definition'>showDateTimeRFC822</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>UTCTime</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-69"></a><span class='hs-definition'>showDateTimeRFC822</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>formatTime</span> <span class='hs-varid'>defaultTimeLocale</span> <span class='hs-str'>"%a, %d %b %Y %X %Z"</span>
<a name="line-70"></a>
<a name="line-71"></a><a name="convertDate"></a><span class='hs-definition'>convertDate</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Inline</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-72"></a><span class='hs-definition'>convertDate</span> <span class='hs-varid'>ils</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maybe</span> <span class='hs-str'>""</span> <span class='hs-varid'>showDateTimeRFC822</span> <span class='hs-varop'>$</span>
<a name="line-73"></a><span class='hs-cpp'>#if MIN_VERSION_time(1,5,0)</span>
<a name="line-74"></a> <span class='hs-varid'>parseTimeM</span> <span class='hs-conid'>True</span>
<a name="line-75"></a><span class='hs-cpp'>#else</span>
<a name="line-76"></a> <span class='hs-varid'>parseTime</span>
<a name="line-77"></a><span class='hs-cpp'>#endif</span>
<a name="line-78"></a> <span class='hs-varid'>defaultTimeLocale</span> <span class='hs-str'>"%F"</span> <span class='hs-varop'>=<<</span> <span class='hs-layout'>(</span><span class='hs-varid'>normalizeDate</span> <span class='hs-varop'>$</span> <span class='hs-varid'>stringify</span> <span class='hs-varid'>ils</span><span class='hs-layout'>)</span>
<a name="line-79"></a>
<a name="line-80"></a><a name="elementToOPML"></a><span class='hs-comment'>-- | Convert an Element to OPML.</span>
<a name="line-81"></a><span class='hs-definition'>elementToOPML</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>WriterOptions</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Element</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-82"></a><span class='hs-definition'>elementToOPML</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>Blk</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>empty</span>
<a name="line-83"></a><span class='hs-definition'>elementToOPML</span> <span class='hs-varid'>opts</span> <span class='hs-layout'>(</span><span class='hs-conid'>Sec</span> <span class='hs-keyword'>_</span> <span class='hs-sel'>_num</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>title</span> <span class='hs-varid'>elements</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-84"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>isBlk</span> <span class='hs-layout'>(</span><span class='hs-conid'>Blk</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-85"></a> <span class='hs-varid'>isBlk</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-86"></a> <span class='hs-varid'>fromBlk</span> <span class='hs-layout'>(</span><span class='hs-conid'>Blk</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-87"></a> <span class='hs-varid'>fromBlk</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"fromBlk called on non-block"</span>
<a name="line-88"></a> <span class='hs-layout'>(</span><span class='hs-varid'>blocks</span><span class='hs-layout'>,</span> <span class='hs-varid'>rest</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>span</span> <span class='hs-varid'>isBlk</span> <span class='hs-varid'>elements</span>
<a name="line-89"></a> <span class='hs-varid'>attrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-str'>"text"</span><span class='hs-layout'>,</span> <span class='hs-varid'>writeHtmlInlines</span> <span class='hs-varid'>title</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span>
<a name="line-90"></a> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-str'>"_note"</span><span class='hs-layout'>,</span> <span class='hs-varid'>writeMarkdown</span> <span class='hs-varid'>def</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pandoc</span> <span class='hs-varid'>nullMeta</span>
<a name="line-91"></a> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>fromBlk</span> <span class='hs-varid'>blocks</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-92"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-varid'>null</span> <span class='hs-varid'>blocks</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-93"></a> <span class='hs-keyword'>in</span> <span class='hs-varid'>inTags</span> <span class='hs-conid'>True</span> <span class='hs-str'>"outline"</span> <span class='hs-varid'>attrs</span> <span class='hs-varop'>$</span>
<a name="line-94"></a> <span class='hs-varid'>vcat</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>elementToOPML</span> <span class='hs-varid'>opts</span><span class='hs-layout'>)</span> <span class='hs-varid'>rest</span><span class='hs-layout'>)</span>
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