<?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://code.haskell.org/~malcolm/hscolour/ --> <title>Data/RFC5051.hs</title> <link type='text/css' rel='stylesheet' href='hscolour.css' /> </head> <body> <pre><a name="line-1"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>RFC5051</span> <span class='hs-layout'>(</span><span class='hs-varid'>compareUnicode</span><span class='hs-layout'>)</span> <a name="line-2"></a><span class='hs-keyword'>where</span> <a name="line-3"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>RFC5051</span><span class='hs-varop'>.</span><span class='hs-conid'>UnicodeData</span> <span class='hs-layout'>(</span><span class='hs-varid'>decompositionMap</span><span class='hs-layout'>)</span> <a name="line-4"></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'>M</span> <a name="line-5"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Char</span> <span class='hs-layout'>(</span><span class='hs-varid'>ord</span><span class='hs-layout'>,</span> <span class='hs-varid'>toTitle</span><span class='hs-layout'>)</span> <a name="line-6"></a> <a name="line-7"></a><a name="compareUnicode"></a><span class='hs-comment'>-- | Compare two strings using @i;unicode-casemap@,</span> <a name="line-8"></a><span class='hs-comment'>-- the simple unicode collation algorithm described in RFC 5051.</span> <a name="line-9"></a><span class='hs-definition'>compareUnicode</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'>Ordering</span> <a name="line-10"></a><span class='hs-definition'>compareUnicode</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>compare</span> <span class='hs-varid'>x'</span> <span class='hs-varid'>y'</span> <span class='hs-keyword'>of</span> <a name="line-11"></a> <span class='hs-conid'>EQ</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>compare</span> <span class='hs-layout'>(</span><span class='hs-varid'>x'</span><span class='hs-layout'>,</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y'</span><span class='hs-layout'>,</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <a name="line-12"></a> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>v</span> <a name="line-13"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>x'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>canonicalize</span> <span class='hs-varid'>x</span> <a name="line-14"></a> <span class='hs-varid'>y'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>canonicalize</span> <span class='hs-varid'>y</span> <a name="line-15"></a> <a name="line-16"></a><a name="canonicalize"></a><span class='hs-definition'>canonicalize</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'>Int</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span> <a name="line-17"></a><span class='hs-definition'>canonicalize</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>decompose</span> <span class='hs-varop'>.</span> <span class='hs-varid'>ord</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toTitle</span><span class='hs-layout'>)</span> <a name="line-18"></a> <a name="line-19"></a><a name="decompose"></a><span class='hs-definition'>decompose</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Int</span><span class='hs-keyglyph'>]</span> <a name="line-20"></a><span class='hs-definition'>decompose</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <a name="line-21"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>decompose'</span> <span class='hs-varid'>c</span> <span class='hs-keyword'>of</span> <a name="line-22"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>c</span><span class='hs-keyglyph'>]</span> <a name="line-23"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>concatMap</span> <span class='hs-varid'>decompose</span> <span class='hs-varid'>xs</span> <a name="line-24"></a> <a name="line-25"></a><a name="decompose'"></a><span class='hs-definition'>decompose'</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Int</span><span class='hs-keyglyph'>]</span> <a name="line-26"></a><span class='hs-definition'>decompose'</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>c</span> <span class='hs-varid'>decompositionMap</span> </pre></body> </html>
