<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html> <head> <!-- Generated by HsColour, http://www.cs.york.ac.uk/fp/darcs/hscolour/ --> <title>src/Data/MIME/Types.hs</title> <link type='text/css' rel='stylesheet' href='hscolour.css' /> </head> <body> <pre><a name="line-1"></a><span class='hs-comment'>{- arch-tag: MIME Types main file <a name="line-2"></a>Copyright (C) 2004-2005 John Goerzen <jgoerzen@complete.org> <a name="line-3"></a> <a name="line-4"></a>This program is free software; you can redistribute it and/or modify <a name="line-5"></a>it under the terms of the GNU General Public License as published by <a name="line-6"></a>the Free Software Foundation; either version 2 of the License, or <a name="line-7"></a>(at your option) any later version. <a name="line-8"></a> <a name="line-9"></a>This program is distributed in the hope that it will be useful, <a name="line-10"></a>but WITHOUT ANY WARRANTY; without even the implied warranty of <a name="line-11"></a>MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the <a name="line-12"></a>GNU General Public License for more details. <a name="line-13"></a> <a name="line-14"></a>You should have received a copy of the GNU General Public License <a name="line-15"></a>along with this program; if not, write to the Free Software <a name="line-16"></a>Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA <a name="line-17"></a>-}</span> <a name="line-18"></a> <a name="line-19"></a><span class='hs-comment'>{- | <a name="line-20"></a> Module : Data.MIME.Types <a name="line-21"></a> Copyright : Copyright (C) 2004-2005 John Goerzen <a name="line-22"></a> License : GNU GPL, version 2 or above <a name="line-23"></a> <a name="line-24"></a> Maintainer : John Goerzen <jgoerzen@complete.org> <a name="line-25"></a> Stability : provisional <a name="line-26"></a> Portability: portable <a name="line-27"></a> <a name="line-28"></a>Utilities for guessing MIME types of files. <a name="line-29"></a> <a name="line-30"></a>Written by John Goerzen, jgoerzen\@complete.org <a name="line-31"></a>-}</span> <a name="line-32"></a> <a name="line-33"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>MIME</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span> <span class='hs-layout'>(</span><span class='hs-comment'>-- * Creating Lookup Objects</span> <a name="line-34"></a> <span class='hs-varid'>defaultmtd</span><span class='hs-layout'>,</span> <a name="line-35"></a> <span class='hs-varid'>readMIMETypes</span><span class='hs-layout'>,</span> <a name="line-36"></a> <span class='hs-varid'>hReadMIMETypes</span><span class='hs-layout'>,</span> <a name="line-37"></a> <span class='hs-varid'>readSystemMIMETypes</span><span class='hs-layout'>,</span> <a name="line-38"></a> <span class='hs-comment'>-- * Basic Access</span> <a name="line-39"></a> <span class='hs-conid'>MIMEResults</span><span class='hs-layout'>,</span> <a name="line-40"></a> <span class='hs-conid'>MIMETypeData</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-41"></a> <span class='hs-varid'>guessType</span><span class='hs-layout'>,</span> <a name="line-42"></a> <span class='hs-varid'>guessExtension</span><span class='hs-layout'>,</span> <a name="line-43"></a> <span class='hs-varid'>guessAllExtensions</span> <a name="line-44"></a> <span class='hs-layout'>)</span> <a name="line-45"></a><span class='hs-keyword'>where</span> <a name="line-46"></a> <a name="line-47"></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'>Map</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Map</span> <a name="line-48"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Monad</span> <a name="line-49"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span> <a name="line-50"></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-varop'>.</span><span class='hs-conid'>Error</span> <a name="line-51"></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-varop'>.</span><span class='hs-conid'>Utils</span> <a name="line-52"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Path</span> <a name="line-53"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span> <a name="line-54"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Char</span> <a name="line-55"></a> <a name="line-56"></a><span class='hs-comment'>----------------------------------------------------------------------</span> <a name="line-57"></a><span class='hs-comment'>-- Basic type declarations</span> <a name="line-58"></a><span class='hs-comment'>----------------------------------------------------------------------</span> <a name="line-59"></a> <a name="line-60"></a><a name="MIMETypeData"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>MIMETypeData</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>MIMETypeData</span> <a name="line-61"></a> <span class='hs-layout'>{</span> <a name="line-62"></a> <span class='hs-comment'>-- | A mapping used to expand common suffixes into equivolent,</span> <a name="line-63"></a> <span class='hs-comment'>-- better-parsed versions. For instance, ".tgz" would expand</span> <a name="line-64"></a> <span class='hs-comment'>-- into ".tar.gz".</span> <a name="line-65"></a> <span class='hs-varid'>suffixMap</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-conid'>String</span> <span class='hs-conid'>String</span><span class='hs-layout'>,</span> <a name="line-66"></a> <span class='hs-comment'>-- | A mapping used to determine the encoding of a file.</span> <a name="line-67"></a> <span class='hs-comment'>-- This is used, for instance, to map ".gz" to "gzip".</span> <a name="line-68"></a> <span class='hs-varid'>encodingsMap</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-conid'>String</span> <span class='hs-conid'>String</span><span class='hs-layout'>,</span> <a name="line-69"></a> <span class='hs-comment'>-- | A mapping used to map extensions to MIME types.</span> <a name="line-70"></a> <span class='hs-varid'>typesMap</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-conid'>String</span> <span class='hs-conid'>String</span><span class='hs-layout'>,</span> <a name="line-71"></a> <span class='hs-comment'>-- | A mapping used to augment the 'typesMap' when non-strict</span> <a name="line-72"></a> <span class='hs-comment'>-- lookups are used.</span> <a name="line-73"></a> <span class='hs-varid'>commonTypesMap</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-conid'>String</span> <span class='hs-conid'>String</span> <a name="line-74"></a> <span class='hs-layout'>}</span> <a name="line-75"></a> <a name="line-76"></a><a name="MIMEResults"></a><span class='hs-comment'>{- | Return value from guessing a file's type. <a name="line-77"></a> <a name="line-78"></a>The first element of the tuple gives the MIME type. It is Nothing if no <a name="line-79"></a>suitable type could be found. <a name="line-80"></a> <a name="line-81"></a>The second element gives the encoding. It is Nothing if there was no particular <a name="line-82"></a>encoding for the file, or if no encoding could be found. <a name="line-83"></a>-}</span> <a name="line-84"></a><a name="MIMEResults"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>MIMEResults</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>String</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- The MIME type</span> <a name="line-85"></a> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- Encoding</span> <a name="line-86"></a> <span class='hs-layout'>)</span> <a name="line-87"></a> <a name="line-88"></a><a name="readMIMETypes"></a><span class='hs-comment'>{- | Read the given mime.types file and add it to an existing object. <a name="line-89"></a>Returns new object. -}</span> <a name="line-90"></a><span class='hs-definition'>readMIMETypes</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MIMETypeData</span> <span class='hs-comment'>-- ^ Data to work with</span> <a name="line-91"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span> <span class='hs-comment'>-- ^ Whether to work on strict data</span> <a name="line-92"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span> <span class='hs-comment'>-- ^ File to read</span> <a name="line-93"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>MIMETypeData</span> <span class='hs-comment'>-- ^ New object</span> <a name="line-94"></a><span class='hs-definition'>readMIMETypes</span> <span class='hs-varid'>mtd</span> <span class='hs-varid'>strict</span> <span class='hs-varid'>fn</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <a name="line-95"></a> <span class='hs-varid'>h</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>openFile</span> <span class='hs-varid'>fn</span> <span class='hs-conid'>ReadMode</span> <a name="line-96"></a> <span class='hs-varid'>hReadMIMETypes</span> <span class='hs-varid'>mtd</span> <span class='hs-varid'>strict</span> <span class='hs-varid'>h</span> <a name="line-97"></a> <a name="line-98"></a><a name="hReadMIMETypes"></a><span class='hs-comment'>{- | Load a mime.types file from an already-open handle. -}</span> <a name="line-99"></a><span class='hs-definition'>hReadMIMETypes</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MIMETypeData</span> <span class='hs-comment'>-- ^ Data to work with</span> <a name="line-100"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span> <span class='hs-comment'>-- ^ Whether to work on strict data</span> <a name="line-101"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Handle</span> <span class='hs-comment'>-- ^ Handle to read from</span> <a name="line-102"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>MIMETypeData</span> <span class='hs-comment'>-- ^ New object</span> <a name="line-103"></a><span class='hs-definition'>hReadMIMETypes</span> <span class='hs-varid'>mtd</span> <span class='hs-varid'>strict</span> <span class='hs-varid'>h</span> <span class='hs-keyglyph'>=</span> <a name="line-104"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>parseline</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MIMETypeData</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>MIMETypeData</span> <a name="line-105"></a> <span class='hs-varid'>parseline</span> <span class='hs-varid'>obj</span> <span class='hs-varid'>line</span> <span class='hs-keyglyph'>=</span> <a name="line-106"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>l1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>words</span> <span class='hs-varid'>line</span> <a name="line-107"></a> <span class='hs-varid'>procwords</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span> <a name="line-108"></a> <span class='hs-varid'>procwords</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-chr'>'#'</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span> <a name="line-109"></a> <span class='hs-varid'>procwords</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:</span> <span class='hs-varid'>procwords</span> <span class='hs-varid'>xs</span> <a name="line-110"></a> <span class='hs-varid'>l2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>procwords</span> <span class='hs-varid'>l1</span> <a name="line-111"></a> <span class='hs-keyword'>in</span> <a name="line-112"></a> <span class='hs-keyword'>if</span> <span class='hs-layout'>(</span><span class='hs-varid'>length</span> <span class='hs-varid'>l2</span><span class='hs-layout'>)</span> <span class='hs-varop'>>=</span> <span class='hs-num'>2</span> <span class='hs-keyword'>then</span> <a name="line-113"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>thetype</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>head</span> <span class='hs-varid'>l2</span> <a name="line-114"></a> <span class='hs-varid'>suffixlist</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>tail</span> <span class='hs-varid'>l2</span> <a name="line-115"></a> <span class='hs-keyword'>in</span> <a name="line-116"></a> <span class='hs-varid'>foldl</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>o</span> <span class='hs-varid'>suff</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>addType</span> <span class='hs-varid'>o</span> <span class='hs-varid'>strict</span> <span class='hs-varid'>thetype</span> <span class='hs-layout'>(</span><span class='hs-chr'>'.'</span> <span class='hs-conop'>:</span> <span class='hs-varid'>suff</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>obj</span> <span class='hs-varid'>suffixlist</span> <a name="line-117"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>obj</span> <a name="line-118"></a> <span class='hs-keyword'>in</span> <a name="line-119"></a> <span class='hs-keyword'>do</span> <a name="line-120"></a> <span class='hs-varid'>lines</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>hGetLines</span> <span class='hs-varid'>h</span> <a name="line-121"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>foldl</span> <span class='hs-varid'>parseline</span> <span class='hs-varid'>mtd</span> <span class='hs-varid'>lines</span><span class='hs-layout'>)</span> <a name="line-122"></a> <a name="line-123"></a><a name="guessType"></a><span class='hs-comment'>{- | Guess the type of a file given a filename or URL. The file <a name="line-124"></a> is not opened; only the name is considered. -}</span> <a name="line-125"></a><span class='hs-definition'>guessType</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MIMETypeData</span> <span class='hs-comment'>-- ^ Source data for guessing</span> <a name="line-126"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span> <span class='hs-comment'>-- ^ Whether to limit to strict data</span> <a name="line-127"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ File or URL name to consider</span> <a name="line-128"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>MIMEResults</span> <span class='hs-comment'>-- ^ Result of guessing (see 'MIMEResults' for details on interpreting it)</span> <a name="line-129"></a><span class='hs-definition'>guessType</span> <span class='hs-varid'>mtd</span> <span class='hs-varid'>strict</span> <span class='hs-varid'>fn</span> <span class='hs-keyglyph'>=</span> <a name="line-130"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>mapext</span> <span class='hs-layout'>(</span><span class='hs-varid'>base</span><span class='hs-layout'>,</span> <span class='hs-varid'>ex</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <a name="line-131"></a> <span class='hs-keyword'>case</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>ex</span> <span class='hs-layout'>(</span><span class='hs-varid'>suffixMap</span> <span class='hs-varid'>mtd</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span> <a name="line-132"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>base</span><span class='hs-layout'>,</span> <span class='hs-varid'>ex</span><span class='hs-layout'>)</span> <a name="line-133"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>mapext</span> <span class='hs-layout'>(</span><span class='hs-varid'>splitExt</span> <span class='hs-layout'>(</span><span class='hs-varid'>base</span> <span class='hs-varop'>++</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <a name="line-134"></a> <span class='hs-varid'>checkencodings</span> <span class='hs-layout'>(</span><span class='hs-varid'>base</span><span class='hs-layout'>,</span> <span class='hs-varid'>ex</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <a name="line-135"></a> <span class='hs-keyword'>case</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>ex</span> <span class='hs-layout'>(</span><span class='hs-varid'>encodingsMap</span> <span class='hs-varid'>mtd</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span> <a name="line-136"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>base</span><span class='hs-layout'>,</span> <span class='hs-varid'>ex</span><span class='hs-layout'>,</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <a name="line-137"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>fst</span> <span class='hs-layout'>(</span><span class='hs-varid'>splitExt</span> <span class='hs-varid'>base</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-138"></a> <span class='hs-varid'>snd</span> <span class='hs-layout'>(</span><span class='hs-varid'>splitExt</span> <span class='hs-varid'>base</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-139"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <a name="line-140"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-varid'>ext</span><span class='hs-layout'>,</span> <span class='hs-varid'>enc</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>checkencodings</span> <span class='hs-varop'>.</span> <span class='hs-varid'>mapext</span> <span class='hs-varop'>$</span> <span class='hs-varid'>splitExt</span> <span class='hs-varid'>fn</span> <a name="line-141"></a> <span class='hs-varid'>typemap</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getStrict</span> <span class='hs-varid'>mtd</span> <span class='hs-varid'>strict</span> <a name="line-142"></a> <span class='hs-keyword'>in</span> <a name="line-143"></a> <span class='hs-keyword'>case</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>ext</span> <span class='hs-varid'>typemap</span> <span class='hs-keyword'>of</span> <a name="line-144"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>lookup</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>toLower</span> <span class='hs-varid'>ext</span><span class='hs-layout'>)</span> <span class='hs-varid'>typemap</span><span class='hs-layout'>,</span> <span class='hs-varid'>enc</span><span class='hs-layout'>)</span> <a name="line-145"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>enc</span><span class='hs-layout'>)</span> <a name="line-146"></a> <a name="line-147"></a><a name="guessExtension"></a><span class='hs-comment'>{- | Guess the extension of a file based on its MIME type. <a name="line-148"></a> The return value includes the leading dot. <a name="line-149"></a> <a name="line-150"></a> Returns Nothing if no extension could be found. <a name="line-151"></a> <a name="line-152"></a> In the event that multiple possible extensions are available, <a name="line-153"></a> one of them will be picked and returned. The logic to select one <a name="line-154"></a> of these should be considered undefined. -}</span> <a name="line-155"></a><span class='hs-definition'>guessExtension</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MIMETypeData</span> <span class='hs-comment'>-- ^ Source data for guessing</span> <a name="line-156"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span> <span class='hs-comment'>-- ^ Whether to limit to strict data</span> <a name="line-157"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ MIME type to consider</span> <a name="line-158"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ Result of guessing, or Nothing if no match possible</span> <a name="line-159"></a><span class='hs-definition'>guessExtension</span> <span class='hs-varid'>mtd</span> <span class='hs-varid'>strict</span> <span class='hs-varid'>fn</span> <span class='hs-keyglyph'>=</span> <a name="line-160"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>guessAllExtensions</span> <span class='hs-varid'>mtd</span> <span class='hs-varid'>strict</span> <span class='hs-varid'>fn</span> <span class='hs-keyword'>of</span> <a name="line-161"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span> <a name="line-162"></a> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-varid'>x</span> <a name="line-163"></a> <a name="line-164"></a><a name="guessAllExtensions"></a><span class='hs-comment'>{- | Similar to 'guessExtension', but returns a list of all possible matching <a name="line-165"></a>extensions, or the empty list if there are no matches. -}</span> <a name="line-166"></a><span class='hs-definition'>guessAllExtensions</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MIMETypeData</span> <span class='hs-comment'>-- ^ Source data for guessing</span> <a name="line-167"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span> <span class='hs-comment'>-- ^ Whether to limit to strict data</span> <a name="line-168"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ MIME type to consider</span> <a name="line-169"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ Result of guessing</span> <a name="line-170"></a><span class='hs-definition'>guessAllExtensions</span> <span class='hs-varid'>mtd</span> <span class='hs-varid'>strict</span> <span class='hs-varid'>fn</span> <span class='hs-keyglyph'>=</span> <a name="line-171"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>mimetype</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>toLower</span> <span class='hs-varid'>fn</span> <a name="line-172"></a> <span class='hs-varid'>themap</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getStrict</span> <span class='hs-varid'>mtd</span> <span class='hs-varid'>strict</span> <a name="line-173"></a> <span class='hs-keyword'>in</span> <a name="line-174"></a> <span class='hs-varid'>flippedLookupM</span> <span class='hs-varid'>mimetype</span> <span class='hs-varid'>themap</span> <a name="line-175"></a> <a name="line-176"></a><a name="addType"></a><span class='hs-comment'>{- | Adds a new type to the data structures, replacing whatever data <a name="line-177"></a> may exist about it already. That is, it overrides existing information <a name="line-178"></a> about the given extension, but the same type may occur more than once. -}</span> <a name="line-179"></a><span class='hs-definition'>addType</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MIMETypeData</span> <span class='hs-comment'>-- ^ Source data</span> <a name="line-180"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span> <span class='hs-comment'>-- ^ Whether to add to strict data set</span> <a name="line-181"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ MIME type to add</span> <a name="line-182"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ Extension to add</span> <a name="line-183"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>MIMETypeData</span> <span class='hs-comment'>-- ^ Result of addition</span> <a name="line-184"></a><span class='hs-definition'>addType</span> <span class='hs-varid'>mtd</span> <span class='hs-varid'>strict</span> <span class='hs-varid'>thetype</span> <span class='hs-varid'>theext</span> <span class='hs-keyglyph'>=</span> <a name="line-185"></a> <span class='hs-varid'>setStrict</span> <span class='hs-varid'>mtd</span> <span class='hs-varid'>strict</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>m</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>insert</span> <span class='hs-varid'>theext</span> <span class='hs-varid'>thetype</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <a name="line-186"></a> <a name="line-187"></a><a name="defaultmtd"></a><span class='hs-comment'>{- | Default MIME type data to use -}</span> <a name="line-188"></a><span class='hs-definition'>defaultmtd</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MIMETypeData</span> <a name="line-189"></a><span class='hs-definition'>defaultmtd</span> <span class='hs-keyglyph'>=</span> <a name="line-190"></a> <span class='hs-conid'>MIMETypeData</span> <span class='hs-layout'>{</span><span class='hs-varid'>suffixMap</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>default_suffix_map</span><span class='hs-layout'>,</span> <a name="line-191"></a> <span class='hs-varid'>encodingsMap</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>default_encodings_map</span><span class='hs-layout'>,</span> <a name="line-192"></a> <span class='hs-varid'>typesMap</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>default_types_map</span><span class='hs-layout'>,</span> <a name="line-193"></a> <span class='hs-varid'>commonTypesMap</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>default_common_types</span><span class='hs-layout'>}</span> <a name="line-194"></a> <a name="line-195"></a><a name="readSystemMIMETypes"></a><span class='hs-comment'>{- | Read the system's default mime.types files, and add the data contained <a name="line-196"></a>therein to the passed object, then return the new one. -}</span> <a name="line-197"></a><span class='hs-definition'>readSystemMIMETypes</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MIMETypeData</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>MIMETypeData</span> <a name="line-198"></a><span class='hs-definition'>readSystemMIMETypes</span> <span class='hs-varid'>mtd</span> <span class='hs-keyglyph'>=</span> <a name="line-199"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>tryread</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MIMETypeData</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-conid'>MIMETypeData</span> <a name="line-200"></a> <span class='hs-varid'>tryread</span> <span class='hs-varid'>inputobj</span> <span class='hs-varid'>filename</span> <span class='hs-keyglyph'>=</span> <a name="line-201"></a> <span class='hs-keyword'>do</span> <a name="line-202"></a> <span class='hs-varid'>fn</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>try</span> <span class='hs-layout'>(</span><span class='hs-varid'>openFile</span> <span class='hs-varid'>filename</span> <span class='hs-conid'>ReadMode</span><span class='hs-layout'>)</span> <a name="line-203"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>fn</span> <span class='hs-keyword'>of</span> <a name="line-204"></a> <span class='hs-conid'>Left</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>inputobj</span> <a name="line-205"></a> <span class='hs-conid'>Right</span> <span class='hs-varid'>h</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <a name="line-206"></a> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>hReadMIMETypes</span> <span class='hs-varid'>inputobj</span> <span class='hs-conid'>True</span> <span class='hs-varid'>h</span> <a name="line-207"></a> <span class='hs-varid'>hClose</span> <span class='hs-varid'>h</span> <a name="line-208"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>x</span> <a name="line-209"></a> <span class='hs-keyword'>in</span> <a name="line-210"></a> <span class='hs-keyword'>do</span> <a name="line-211"></a> <span class='hs-varid'>foldM</span> <span class='hs-varid'>tryread</span> <span class='hs-varid'>mtd</span> <span class='hs-varid'>defaultfilelocations</span> <a name="line-212"></a> <a name="line-213"></a><a name="getStrict"></a><span class='hs-comment'>----------------------------------------------------------------------</span> <a name="line-214"></a><span class='hs-comment'>-- Internal utilities</span> <a name="line-215"></a><span class='hs-comment'>----------------------------------------------------------------------</span> <a name="line-216"></a><span class='hs-definition'>getStrict</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MIMETypeData</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-conid'>String</span> <span class='hs-conid'>String</span> <a name="line-217"></a><span class='hs-definition'>getStrict</span> <span class='hs-varid'>mtd</span> <span class='hs-conid'>True</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>typesMap</span> <span class='hs-varid'>mtd</span> <a name="line-218"></a><span class='hs-definition'>getStrict</span> <span class='hs-varid'>mtd</span> <span class='hs-conid'>False</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>union</span> <span class='hs-layout'>(</span><span class='hs-varid'>typesMap</span> <span class='hs-varid'>mtd</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>commonTypesMap</span> <span class='hs-varid'>mtd</span><span class='hs-layout'>)</span> <a name="line-219"></a> <a name="line-220"></a><a name="setStrict"></a><span class='hs-definition'>setStrict</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MIMETypeData</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-conid'>String</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-conid'>String</span> <span class='hs-conid'>String</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>MIMETypeData</span> <a name="line-221"></a><span class='hs-definition'>setStrict</span> <span class='hs-varid'>mtd</span> <span class='hs-conid'>True</span> <span class='hs-varid'>func</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mtd</span><span class='hs-layout'>{</span><span class='hs-varid'>typesMap</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>func</span> <span class='hs-layout'>(</span><span class='hs-varid'>typesMap</span> <span class='hs-varid'>mtd</span><span class='hs-layout'>)</span><span class='hs-layout'>}</span> <a name="line-222"></a><span class='hs-definition'>setStrict</span> <span class='hs-varid'>mtd</span> <span class='hs-conid'>False</span> <span class='hs-varid'>func</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mtd</span><span class='hs-layout'>{</span><span class='hs-varid'>commonTypesMap</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>func</span> <span class='hs-layout'>(</span><span class='hs-varid'>commonTypesMap</span> <span class='hs-varid'>mtd</span><span class='hs-layout'>)</span><span class='hs-layout'>}</span> <a name="line-223"></a> <a name="line-224"></a><a name="defaultfilelocations"></a><span class='hs-comment'>----------------------------------------------------------------------</span> <a name="line-225"></a><span class='hs-comment'>-- Default data structures</span> <a name="line-226"></a><span class='hs-comment'>----------------------------------------------------------------------</span> <a name="line-227"></a><span class='hs-definition'>defaultfilelocations</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-228"></a><span class='hs-definition'>defaultfilelocations</span> <span class='hs-keyglyph'>=</span> <a name="line-229"></a> <span class='hs-keyglyph'>[</span> <a name="line-230"></a> <span class='hs-str'>"/etc/mime.types"</span><span class='hs-layout'>,</span> <a name="line-231"></a> <span class='hs-str'>"/usr/local/etc/httpd/conf/mime.types"</span><span class='hs-layout'>,</span> <a name="line-232"></a> <span class='hs-str'>"/usr/local/lib/netscape/mime.types"</span><span class='hs-layout'>,</span> <a name="line-233"></a> <span class='hs-str'>"/usr/local/etc/httpd/conf/mime.types"</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- Apache 1.2</span> <a name="line-234"></a> <span class='hs-str'>"/usr/local/etc/mime.types"</span> <span class='hs-comment'>-- Apache 1.3</span> <a name="line-235"></a> <span class='hs-keyglyph'>]</span> <a name="line-236"></a> <a name="line-237"></a><a name="default_encodings_map"></a><span class='hs-definition'>default_encodings_map</span><span class='hs-layout'>,</span> <span class='hs-varid'>default_suffix_map</span><span class='hs-layout'>,</span> <span class='hs-varid'>default_types_map</span><span class='hs-layout'>,</span> <span class='hs-varid'>default_common_types</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-conid'>String</span> <span class='hs-conid'>String</span> <a name="line-238"></a><span class='hs-definition'>default_encodings_map</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>fromList</span> <span class='hs-keyglyph'>[</span> <a name="line-239"></a> <span class='hs-layout'>(</span><span class='hs-str'>".Z"</span><span class='hs-layout'>,</span> <span class='hs-str'>"compress"</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-240"></a> <span class='hs-layout'>(</span><span class='hs-str'>".gz"</span><span class='hs-layout'>,</span> <span class='hs-str'>"gzip"</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-241"></a> <span class='hs-layout'>(</span><span class='hs-str'>".bz2"</span><span class='hs-layout'>,</span> <span class='hs-str'>"bzip2"</span><span class='hs-layout'>)</span> <a name="line-242"></a> <span class='hs-keyglyph'>]</span> <a name="line-243"></a> <a name="line-244"></a><a name="default_suffix_map"></a><span class='hs-definition'>default_suffix_map</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>fromList</span> <span class='hs-keyglyph'>[</span> <a name="line-245"></a> <span class='hs-layout'>(</span><span class='hs-str'>".tgz"</span><span class='hs-layout'>,</span> <span class='hs-str'>".tar.gz"</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-246"></a> <span class='hs-layout'>(</span><span class='hs-str'>".tz"</span><span class='hs-layout'>,</span> <span class='hs-str'>".tar.gz"</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-247"></a> <span class='hs-layout'>(</span><span class='hs-str'>".taz"</span><span class='hs-layout'>,</span> <span class='hs-str'>".tar.gz"</span><span class='hs-layout'>)</span> <a name="line-248"></a> <span class='hs-keyglyph'>]</span> <a name="line-249"></a> <a name="line-250"></a><a name="default_types_map"></a><span class='hs-definition'>default_types_map</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>fromList</span> <span class='hs-keyglyph'>[</span> <a name="line-251"></a> <span class='hs-layout'>(</span><span class='hs-str'>".a"</span><span class='hs-layout'>,</span> <span class='hs-str'>"application/octet-stream"</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-252"></a> <span class='hs-layout'>(</span><span class='hs-str'>".ai"</span><span class='hs-layout'>,</span> <span class='hs-str'>"application/postscript"</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-253"></a> <span class='hs-layout'>(</span><span class='hs-str'>".aif"</span><span class='hs-layout'>,</span> <span class='hs-str'>"audio/x-aiff"</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-254"></a> <span class='hs-layout'>(</span><span class='hs-str'>".aifc"</span><span class='hs-layout'>,</span> <span class='hs-str'>"audio/x-aiff"</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-255"></a> <span class='hs-layout'>(</span><span class='hs-str'>".aiff"</span><span class='hs-layout'>,</span> <span class='hs-str'>"audio/x-aiff"</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-256"></a> <span class='hs-layout'>(</span><span class='hs-str'>".au"</span><span class='hs-layout'>,</span> <span class='hs-str'>"audio/basic"</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-257"></a> <span class='hs-layout'>(</span><span class='hs-str'>".avi"</span><span class='hs-layout'>,</span> <span class='hs-str'>"video/x-msvideo"</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-258"></a> <span class='hs-layout'>(</span><span class='hs-str'>".bat"</span><span class='hs-layout'>,</span> <span class='hs-str'>"text/plain"</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-259"></a> <span class='hs-layout'>(</span><span class='hs-str'>".bcpio"</span><span class='hs-layout'>,</span> <span class='hs-str'>"application/x-bcpio"</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-260"></a> <span class='hs-layout'>(</span><span class='hs-str'>".bin"</span><span class='hs-layout'>,</span> <span class='hs-str'>"application/octet-stream"</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-261"></a> <span class='hs-layout'>(</span><span class='hs-str'>".bmp"</span><span class='hs-layout'>,</span> <span class='hs-str'>"image/x-ms-bmp"</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-262"></a> <span class='hs-layout'>(</span><span class='hs-str'>".c"</span><span class='hs-layout'>,</span> <span class='hs-str'>"text/plain"</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-263"></a> <span class='hs-layout'>(</span><span class='hs-str'>".cdf"</span><span class='hs-layout'>,</span> <span class='hs-str'>"application/x-netcdf"</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-264"></a> <span class='hs-layout'>(</span><span class='hs-str'>".cpio"</span><span class='hs-layout'>,</span> <span class='hs-str'>"application/x-cpio"</span><span 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