hxt-8.3.0: doc/hdoc/src/Text-XML-HXT-DOM-MimeTypes.html
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<pre><a name="line-1"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='comment'>{- |
<a name="line-4"></a> Module : Text.XML.HXT.DOM.MimeTypes
<a name="line-5"></a> Copyright : Copyright (C) 2008 Uwe Schmidt
<a name="line-6"></a> License : MIT
<a name="line-7"></a>
<a name="line-8"></a> Maintainer : Uwe Schmidt (uwe@fh-wedel.de)
<a name="line-9"></a> Stability : experimental
<a name="line-10"></a> Portability: portable
<a name="line-11"></a>
<a name="line-12"></a> mime type related data and functions
<a name="line-13"></a>
<a name="line-14"></a>-}</span>
<a name="line-15"></a>
<a name="line-16"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-17"></a>
<a name="line-18"></a><span class='keyword'>module</span> <span class='conid'>Text</span><span class='varop'>.</span><span class='conid'>XML</span><span class='varop'>.</span><span class='conid'>HXT</span><span class='varop'>.</span><span class='conid'>DOM</span><span class='varop'>.</span><span class='conid'>MimeTypes</span>
<a name="line-19"></a><span class='keyword'>where</span>
<a name="line-20"></a>
<a name="line-21"></a><span class='keyword'>import</span> <span class='conid'>Control</span><span class='varop'>.</span><span class='conid'>Monad</span> <span class='layout'>(</span> <span class='varid'>mplus</span> <span class='layout'>)</span>
<a name="line-22"></a>
<a name="line-23"></a><span class='keyword'>import</span> <span class='keyword'>qualified</span> <span class='conid'>Data</span><span class='varop'>.</span><span class='conid'>ByteString</span> <span class='keyword'>as</span> <span class='conid'>B</span>
<a name="line-24"></a><span class='keyword'>import</span> <span class='keyword'>qualified</span> <span class='conid'>Data</span><span class='varop'>.</span><span class='conid'>ByteString</span><span class='varop'>.</span><span class='conid'>Char8</span> <span class='keyword'>as</span> <span class='conid'>C</span>
<a name="line-25"></a>
<a name="line-26"></a><span class='keyword'>import</span> <span class='conid'>Data</span><span class='varop'>.</span><span class='conid'>Char</span>
<a name="line-27"></a><span class='keyword'>import</span> <span class='conid'>Data</span><span class='varop'>.</span><span class='conid'>List</span>
<a name="line-28"></a><span class='keyword'>import</span> <span class='keyword'>qualified</span> <span class='conid'>Data</span><span class='varop'>.</span><span class='conid'>Map</span> <span class='keyword'>as</span> <span class='conid'>M</span>
<a name="line-29"></a><span class='keyword'>import</span> <span class='conid'>Data</span><span class='varop'>.</span><span class='conid'>Maybe</span>
<a name="line-30"></a>
<a name="line-31"></a><span class='keyword'>import</span> <span class='conid'>System</span><span class='varop'>.</span><span class='conid'>IO</span>
<a name="line-32"></a>
<a name="line-33"></a><span class='keyword'>import</span> <span class='conid'>Text</span><span class='varop'>.</span><span class='conid'>XML</span><span class='varop'>.</span><span class='conid'>HXT</span><span class='varop'>.</span><span class='conid'>DOM</span><span class='varop'>.</span><span class='conid'>MimeTypeDefaults</span>
<a name="line-34"></a>
<a name="line-35"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-36"></a>
<a name="line-37"></a><a name="MimeTypeTable"></a><span class='keyword'>type</span> <span class='conid'>MimeTypeTable</span> <span class='keyglyph'>=</span> <span class='conid'>M</span><span class='varop'>.</span><span class='conid'>Map</span> <span class='conid'>String</span> <span class='conid'>String</span>
<a name="line-38"></a>
<a name="line-39"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-40"></a>
<a name="line-41"></a><span class='comment'>-- mime types</span>
<a name="line-42"></a><span class='comment'>--</span>
<a name="line-43"></a><span class='comment'>-- see RFC \"http:\/\/www.rfc-editor.org\/rfc\/rfc3023.txt\"</span>
<a name="line-44"></a>
<a name="line-45"></a><a name="application_xhtml"></a><span class='definition'>application_xhtml</span><span class='layout'>,</span>
<a name="line-46"></a> <span class='varid'>application_xml</span><span class='layout'>,</span>
<a name="line-47"></a> <span class='varid'>application_xml_external_parsed_entity</span><span class='layout'>,</span>
<a name="line-48"></a> <span class='varid'>application_xml_dtd</span><span class='layout'>,</span>
<a name="line-49"></a> <span class='varid'>text_html</span><span class='layout'>,</span>
<a name="line-50"></a> <span class='varid'>text_xml</span><span class='layout'>,</span>
<a name="line-51"></a> <span class='varid'>text_xml_external_parsed_entity</span> <span class='keyglyph'>::</span> <span class='conid'>String</span>
<a name="line-52"></a>
<a name="line-53"></a><span class='definition'>application_xhtml</span> <span class='keyglyph'>=</span> <span class='str'>"application/xhtml+xml"</span>
<a name="line-54"></a><a name="application_xml"></a><span class='definition'>application_xml</span> <span class='keyglyph'>=</span> <span class='str'>"application/xml"</span>
<a name="line-55"></a><a name="application_xml_external_parsed_entity"></a><span class='definition'>application_xml_external_parsed_entity</span> <span class='keyglyph'>=</span> <span class='str'>"application/xml-external-parsed-entity"</span>
<a name="line-56"></a><a name="application_xml_dtd"></a><span class='definition'>application_xml_dtd</span> <span class='keyglyph'>=</span> <span class='str'>"application/xml-dtd"</span>
<a name="line-57"></a>
<a name="line-58"></a><a name="text_html"></a><span class='definition'>text_html</span> <span class='keyglyph'>=</span> <span class='str'>"text/html"</span>
<a name="line-59"></a><a name="text_xml"></a><span class='definition'>text_xml</span> <span class='keyglyph'>=</span> <span class='str'>"text/xml"</span>
<a name="line-60"></a><a name="text_xml_external_parsed_entity"></a><span class='definition'>text_xml_external_parsed_entity</span> <span class='keyglyph'>=</span> <span class='str'>"text/xml-external-parsed-entity"</span>
<a name="line-61"></a>
<a name="line-62"></a><a name="isHtmlMimeType"></a><span class='definition'>isHtmlMimeType</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>Bool</span>
<a name="line-63"></a><span class='definition'>isHtmlMimeType</span> <span class='varid'>t</span>
<a name="line-64"></a> <span class='keyglyph'>=</span> <span class='varid'>t</span> <span class='varop'>==</span> <span class='varid'>text_html</span>
<a name="line-65"></a>
<a name="line-66"></a><a name="isXmlMimeType"></a><span class='definition'>isXmlMimeType</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>Bool</span>
<a name="line-67"></a><span class='definition'>isXmlMimeType</span> <span class='varid'>t</span>
<a name="line-68"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span> <span class='varid'>t</span> <span class='varop'>`elem`</span> <span class='keyglyph'>[</span> <span class='varid'>application_xhtml</span>
<a name="line-69"></a> <span class='layout'>,</span> <span class='varid'>application_xml</span>
<a name="line-70"></a> <span class='layout'>,</span> <span class='varid'>application_xml_external_parsed_entity</span>
<a name="line-71"></a> <span class='layout'>,</span> <span class='varid'>application_xml_dtd</span>
<a name="line-72"></a> <span class='layout'>,</span> <span class='varid'>text_xml</span>
<a name="line-73"></a> <span class='layout'>,</span> <span class='varid'>text_xml_external_parsed_entity</span>
<a name="line-74"></a> <span class='keyglyph'>]</span>
<a name="line-75"></a> <span class='varop'>||</span>
<a name="line-76"></a> <span class='str'>"+xml"</span> <span class='varop'>`isSuffixOf`</span> <span class='varid'>t</span> <span class='comment'>-- application/mathml+xml</span>
<a name="line-77"></a> <span class='layout'>)</span> <span class='comment'>-- or image/svg+xml</span>
<a name="line-78"></a>
<a name="line-79"></a><a name="defaultMimeTypeTable"></a><span class='definition'>defaultMimeTypeTable</span> <span class='keyglyph'>::</span> <span class='conid'>MimeTypeTable</span>
<a name="line-80"></a><span class='definition'>defaultMimeTypeTable</span>
<a name="line-81"></a> <span class='keyglyph'>=</span> <span class='conid'>M</span><span class='varop'>.</span><span class='varid'>fromList</span> <span class='varid'>mimeTypeDefaults</span>
<a name="line-82"></a>
<a name="line-83"></a><a name="extensionToMimeType"></a><span class='definition'>extensionToMimeType</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>MimeTypeTable</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-84"></a><span class='definition'>extensionToMimeType</span> <span class='varid'>e</span>
<a name="line-85"></a> <span class='keyglyph'>=</span> <span class='varid'>fromMaybe</span> <span class='str'>""</span> <span class='varop'>.</span> <span class='varid'>lookupMime</span>
<a name="line-86"></a> <span class='keyword'>where</span>
<a name="line-87"></a> <span class='varid'>lookupMime</span> <span class='varid'>t</span>
<a name="line-88"></a> <span class='keyglyph'>=</span> <span class='conid'>M</span><span class='varop'>.</span><span class='varid'>lookup</span> <span class='varid'>e</span> <span class='varid'>t</span> <span class='comment'>-- try exact match</span>
<a name="line-89"></a> <span class='varop'>`mplus`</span>
<a name="line-90"></a> <span class='conid'>M</span><span class='varop'>.</span><span class='varid'>lookup</span> <span class='layout'>(</span><span class='varid'>map</span> <span class='varid'>toLower</span> <span class='varid'>e</span><span class='layout'>)</span> <span class='varid'>t</span> <span class='comment'>-- else try lowercase match</span>
<a name="line-91"></a> <span class='varop'>`mplus`</span>
<a name="line-92"></a> <span class='conid'>M</span><span class='varop'>.</span><span class='varid'>lookup</span> <span class='layout'>(</span><span class='varid'>map</span> <span class='varid'>toUpper</span> <span class='varid'>e</span><span class='layout'>)</span> <span class='varid'>t</span> <span class='comment'>-- else try uppercase match</span>
<a name="line-93"></a>
<a name="line-94"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-95"></a>
<a name="line-96"></a><a name="readMimeTypeTable"></a><span class='definition'>readMimeTypeTable</span> <span class='keyglyph'>::</span> <span class='conid'>FilePath</span> <span class='keyglyph'>-></span> <span class='conid'>IO</span> <span class='conid'>MimeTypeTable</span>
<a name="line-97"></a><span class='definition'>readMimeTypeTable</span> <span class='varid'>inp</span>
<a name="line-98"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-99"></a> <span class='varid'>cb</span> <span class='keyglyph'><-</span> <span class='conid'>B</span><span class='varop'>.</span><span class='varid'>readFile</span> <span class='varid'>inp</span>
<a name="line-100"></a> <span class='varid'>return</span> <span class='varop'>.</span> <span class='conid'>M</span><span class='varop'>.</span><span class='varid'>fromList</span> <span class='varop'>.</span> <span class='varid'>parseMimeTypeTable</span> <span class='varop'>.</span> <span class='conid'>C</span><span class='varop'>.</span><span class='varid'>unpack</span> <span class='varop'>$</span> <span class='varid'>cb</span>
<a name="line-101"></a>
<a name="line-102"></a><a name="parseMimeTypeTable"></a><span class='definition'>parseMimeTypeTable</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='keyglyph'>[</span><span class='layout'>(</span><span class='conid'>String</span><span class='layout'>,</span> <span class='conid'>String</span><span class='layout'>)</span><span class='keyglyph'>]</span>
<a name="line-103"></a><span class='definition'>parseMimeTypeTable</span>
<a name="line-104"></a> <span class='keyglyph'>=</span> <span class='varid'>concat</span>
<a name="line-105"></a> <span class='varop'>.</span> <span class='varid'>map</span> <span class='varid'>buildPairs</span>
<a name="line-106"></a> <span class='varop'>.</span> <span class='varid'>map</span> <span class='varid'>words</span>
<a name="line-107"></a> <span class='varop'>.</span> <span class='varid'>filter</span> <span class='layout'>(</span><span class='varid'>not</span> <span class='varop'>.</span> <span class='layout'>(</span><span class='str'>"#"</span> <span class='varop'>`isPrefixOf`</span><span class='layout'>)</span><span class='layout'>)</span>
<a name="line-108"></a> <span class='varop'>.</span> <span class='varid'>filter</span> <span class='layout'>(</span><span class='varid'>not</span> <span class='varop'>.</span> <span class='varid'>all</span> <span class='layout'>(</span><span class='varid'>isSpace</span><span class='layout'>)</span><span class='layout'>)</span>
<a name="line-109"></a> <span class='varop'>.</span> <span class='varid'>lines</span>
<a name="line-110"></a> <span class='keyword'>where</span>
<a name="line-111"></a> <span class='varid'>buildPairs</span> <span class='keyglyph'>::</span> <span class='keyglyph'>[</span><span class='conid'>String</span><span class='keyglyph'>]</span> <span class='keyglyph'>-></span> <span class='keyglyph'>[</span><span class='layout'>(</span><span class='conid'>String</span><span class='layout'>,</span> <span class='conid'>String</span><span class='layout'>)</span><span class='keyglyph'>]</span>
<a name="line-112"></a> <span class='varid'>buildPairs</span> <span class='conid'>[]</span> <span class='keyglyph'>=</span> <span class='conid'>[]</span>
<a name="line-113"></a> <span class='varid'>buildPairs</span> <span class='layout'>(</span><span class='varid'>mt</span><span class='conop'>:</span><span class='varid'>exts</span><span class='layout'>)</span> <span class='keyglyph'>=</span> <span class='varid'>map</span> <span class='layout'>(</span><span class='keyglyph'>\</span> <span class='varid'>x</span> <span class='keyglyph'>-></span> <span class='layout'>(</span><span class='varid'>x</span><span class='layout'>,</span> <span class='varid'>mt</span><span class='layout'>)</span><span class='layout'>)</span> <span class='varop'>$</span> <span class='varid'>exts</span>
<a name="line-114"></a>
<a name="line-115"></a><span class='comment'>-- ------------------------------------------------------------</span>
</pre></body>
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