hxt-8.2.0: doc/hdoc/src/Text-XML-HXT-DOM-UTF8Decoding.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.UTF8Decoding
<a name="line-5"></a> Copyright : Copyright (C) 2005 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 : stable
<a name="line-10"></a> Portability: portable
<a name="line-11"></a>
<a name="line-12"></a> Interface for Data.Char.UTF8 funtions
<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'>UTF8Decoding</span> <span class='layout'>(</span>
<a name="line-19"></a> <span class='varid'>decodeUtf8</span><span class='layout'>,</span>
<a name="line-20"></a> <span class='varid'>decodeUtf8EmbedErrors</span><span class='layout'>,</span>
<a name="line-21"></a> <span class='varid'>decodeUtf8IgnoreErrors</span><span class='layout'>,</span>
<a name="line-22"></a> <span class='layout'>)</span>
<a name="line-23"></a><span class='keyword'>where</span>
<a name="line-24"></a>
<a name="line-25"></a><span class='keyword'>import</span> <span class='keyword'>qualified</span> <span class='conid'>Data</span><span class='varop'>.</span><span class='conid'>Char</span><span class='varop'>.</span><span class='conid'>UTF8</span> <span class='keyword'>as</span> <span class='conid'>UTF8</span>
<a name="line-26"></a><span class='keyword'>import</span> <span class='conid'>Data</span><span class='varop'>.</span><span class='conid'>Word</span> <span class='layout'>(</span><span class='conid'>Word8</span><span class='layout'>)</span>
<a name="line-27"></a>
<a name="line-28"></a><span class='comment'>-- | calls 'Data.Char.UTF8.decode' for parsing and decoding UTF-8</span>
<a name="line-29"></a>
<a name="line-30"></a><a name="decodeUtf8"></a><span class='definition'>decodeUtf8</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='layout'>(</span><span class='conid'>String</span><span class='layout'>,</span> <span class='keyglyph'>[</span><span class='conid'>String</span><span class='keyglyph'>]</span><span class='layout'>)</span>
<a name="line-31"></a><span class='definition'>decodeUtf8</span> <span class='varid'>str</span>
<a name="line-32"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span><span class='varid'>res</span><span class='layout'>,</span> <span class='varid'>map</span> <span class='layout'>(</span><span class='varid'>uncurry</span> <span class='varid'>toErrStr</span><span class='layout'>)</span> <span class='varid'>errs</span><span class='layout'>)</span>
<a name="line-33"></a> <span class='keyword'>where</span>
<a name="line-34"></a> <span class='layout'>(</span><span class='varid'>res</span><span class='layout'>,</span> <span class='varid'>errs</span><span class='layout'>)</span> <span class='keyglyph'>=</span> <span class='conid'>UTF8</span><span class='varop'>.</span><span class='varid'>decode</span> <span class='varop'>.</span> <span class='varid'>stringToByteString</span> <span class='varop'>$</span> <span class='varid'>str</span>
<a name="line-35"></a>
<a name="line-36"></a><a name="decodeUtf8IgnoreErrors"></a><span class='definition'>decodeUtf8IgnoreErrors</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-37"></a><span class='definition'>decodeUtf8IgnoreErrors</span>
<a name="line-38"></a> <span class='keyglyph'>=</span> <span class='varid'>fst</span> <span class='varop'>.</span> <span class='varid'>decodeUtf8</span>
<a name="line-39"></a>
<a name="line-40"></a><a name="decodeUtf8EmbedErrors"></a><span class='definition'>decodeUtf8EmbedErrors</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='keyglyph'>[</span><span class='conid'>Either</span> <span class='conid'>String</span> <span class='conid'>Char</span><span class='keyglyph'>]</span>
<a name="line-41"></a><span class='definition'>decodeUtf8EmbedErrors</span> <span class='varid'>str</span>
<a name="line-42"></a> <span class='keyglyph'>=</span> <span class='varid'>map</span> <span class='layout'>(</span><span class='varid'>either</span> <span class='layout'>(</span><span class='conid'>Left</span> <span class='varop'>.</span> <span class='varid'>uncurry</span> <span class='varid'>toErrStr</span><span class='layout'>)</span> <span class='conid'>Right</span><span class='layout'>)</span> <span class='varop'>$</span>
<a name="line-43"></a> <span class='conid'>UTF8</span><span class='varop'>.</span><span class='varid'>decodeEmbedErrors</span> <span class='varop'>$</span> <span class='varid'>stringToByteString</span> <span class='varop'>$</span> <span class='varid'>str</span>
<a name="line-44"></a>
<a name="line-45"></a><a name="stringToByteString"></a><span class='definition'>stringToByteString</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='keyglyph'>[</span><span class='conid'>Word8</span><span class='keyglyph'>]</span>
<a name="line-46"></a><span class='definition'>stringToByteString</span> <span class='keyglyph'>=</span> <span class='varid'>map</span> <span class='layout'>(</span><span class='varid'>toEnum</span> <span class='varop'>.</span> <span class='varid'>fromEnum</span><span class='layout'>)</span>
<a name="line-47"></a>
<a name="line-48"></a><a name="toErrStr"></a><span class='definition'>toErrStr</span> <span class='keyglyph'>::</span> <span class='conid'>UTF8</span><span class='varop'>.</span><span class='conid'>Error</span> <span class='keyglyph'>-></span> <span class='conid'>Int</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-49"></a><span class='definition'>toErrStr</span> <span class='varid'>err</span> <span class='varid'>pos</span>
<a name="line-50"></a> <span class='keyglyph'>=</span> <span class='str'>" at input position "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>pos</span> <span class='varop'>++</span> <span class='str'>": "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>err</span>
<a name="line-51"></a>
<a name="line-52"></a><span class='comment'>-- ------------------------------------------------------------</span>
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