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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE BangPatterns #-}</span>
<a name="line-2"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Encoding</span><span class='hs-varop'>.</span><span class='hs-conid'>CodePage</span><span class='hs-layout'>(</span>
<a name="line-3"></a><span class='hs-cpp'>#if !defined(mingw32_HOST_OS)</span>
<a name="line-4"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-5"></a><span class='hs-cpp'>#else</span>
<a name="line-6"></a> <span class='hs-varid'>codePageEncoding</span><span class='hs-layout'>,</span>
<a name="line-7"></a> <span class='hs-varid'>localeEncoding</span>
<a name="line-8"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-9"></a>
<a name="line-10"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Base</span>
<a name="line-11"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Show</span>
<a name="line-12"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Num</span>
<a name="line-13"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Enum</span>
<a name="line-14"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Word</span>
<a name="line-15"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafePerformIO</span><span class='hs-layout'>)</span>
<a name="line-16"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Encoding</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span>
<a name="line-17"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Buffer</span>
<a name="line-18"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Exception</span>
<a name="line-19"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Bits</span>
<a name="line-20"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span>
<a name="line-21"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span> <span class='hs-layout'>(</span><span class='hs-varid'>lookup</span><span class='hs-layout'>)</span>
<a name="line-22"></a>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Encoding</span><span class='hs-varop'>.</span><span class='hs-conid'>CodePage</span><span class='hs-varop'>.</span><span class='hs-conid'>Table</span>
<a name="line-24"></a>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Encoding</span><span class='hs-varop'>.</span><span class='hs-conid'>Latin1</span> <span class='hs-layout'>(</span><span class='hs-varid'>latin1</span><span class='hs-layout'>)</span>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Encoding</span><span class='hs-varop'>.</span><span class='hs-conid'>UTF8</span> <span class='hs-layout'>(</span><span class='hs-varid'>utf8</span><span class='hs-layout'>)</span>
<a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Encoding</span><span class='hs-varop'>.</span><span class='hs-conid'>UTF16</span> <span class='hs-layout'>(</span><span class='hs-varid'>utf16le</span><span class='hs-layout'>,</span> <span class='hs-varid'>utf16be</span><span class='hs-layout'>)</span>
<a name="line-28"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Encoding</span><span class='hs-varop'>.</span><span class='hs-conid'>UTF32</span> <span class='hs-layout'>(</span><span class='hs-varid'>utf32le</span><span class='hs-layout'>,</span> <span class='hs-varid'>utf32be</span><span class='hs-layout'>)</span>
<a name="line-29"></a>
<a name="line-30"></a><a name="getCurrentCodePage"></a><span class='hs-comment'>-- note CodePage = UInt which might not work on Win64. But the Win32 package</span>
<a name="line-31"></a><span class='hs-comment'>-- also has this issue.</span>
<a name="line-32"></a><span class='hs-definition'>getCurrentCodePage</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Word32</span>
<a name="line-33"></a><span class='hs-definition'>getCurrentCodePage</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-34"></a> <span class='hs-varid'>conCP</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getConsoleCP</span>
<a name="line-35"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>conCP</span> <span class='hs-varop'>></span> <span class='hs-num'>0</span>
<a name="line-36"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-varid'>conCP</span>
<a name="line-37"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>getACP</span>
<a name="line-38"></a>
<a name="line-39"></a><span class='hs-comment'>-- Since the Win32 package depends on base, we have to import these ourselves:</span>
<a name="line-40"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-varid'>stdcall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"windows.h GetConsoleCP"</span>
<a name="line-41"></a> <span class='hs-varid'>getConsoleCP</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Word32</span>
<a name="line-42"></a>
<a name="line-43"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-varid'>stdcall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"windows.h GetACP"</span>
<a name="line-44"></a> <span class='hs-varid'>getACP</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Word32</span>
<a name="line-45"></a>
<a name="line-46"></a><a name="localeEncoding"></a><span class='hs-comment'>{-# NOINLINE localeEncoding #-}</span>
<a name="line-47"></a><span class='hs-definition'>localeEncoding</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>TextEncoding</span>
<a name="line-48"></a><span class='hs-definition'>localeEncoding</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafePerformIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fmap</span> <span class='hs-varid'>codePageEncoding</span> <span class='hs-varid'>getCurrentCodePage</span>
<a name="line-49"></a>
<a name="line-50"></a>
<a name="line-51"></a><a name="codePageEncoding"></a><span class='hs-definition'>codePageEncoding</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word32</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TextEncoding</span>
<a name="line-52"></a><span class='hs-definition'>codePageEncoding</span> <span class='hs-num'>65001</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>utf8</span>
<a name="line-53"></a><span class='hs-definition'>codePageEncoding</span> <span class='hs-num'>1200</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>utf16le</span>
<a name="line-54"></a><span class='hs-definition'>codePageEncoding</span> <span class='hs-num'>1201</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>utf16be</span>
<a name="line-55"></a><span class='hs-definition'>codePageEncoding</span> <span class='hs-num'>12000</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>utf32le</span>
<a name="line-56"></a><span class='hs-definition'>codePageEncoding</span> <span class='hs-num'>12001</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>utf32be</span>
<a name="line-57"></a><span class='hs-definition'>codePageEncoding</span> <span class='hs-varid'>cp</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maybe</span> <span class='hs-varid'>latin1</span> <span class='hs-layout'>(</span><span class='hs-varid'>buildEncoding</span> <span class='hs-varid'>cp</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>cp</span> <span class='hs-varid'>codePageMap</span><span class='hs-layout'>)</span>
<a name="line-58"></a>
<a name="line-59"></a><a name="buildEncoding"></a><span class='hs-definition'>buildEncoding</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word32</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CodePageArrays</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TextEncoding</span>
<a name="line-60"></a><span class='hs-definition'>buildEncoding</span> <span class='hs-varid'>cp</span> <span class='hs-conid'>SingleByteCP</span> <span class='hs-layout'>{</span><span class='hs-varid'>decoderArray</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>dec</span><span class='hs-layout'>,</span> <span class='hs-varid'>encoderArray</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>enc</span><span class='hs-layout'>}</span>
<a name="line-61"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>TextEncoding</span> <span class='hs-layout'>{</span>
<a name="line-62"></a> <span class='hs-varid'>textEncodingName</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"CP"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>cp</span><span class='hs-layout'>,</span>
<a name="line-63"></a> <span class='hs-varid'>mkTextDecoder</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>simpleCodec</span>
<a name="line-64"></a> <span class='hs-varop'>$</span> <span class='hs-varid'>decodeFromSingleByte</span> <span class='hs-varid'>dec</span>
<a name="line-65"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mkTextEncoder</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>simpleCodec</span> <span class='hs-varop'>$</span> <span class='hs-varid'>encodeToSingleByte</span> <span class='hs-varid'>enc</span>
<a name="line-66"></a> <span class='hs-layout'>}</span>
<a name="line-67"></a>
<a name="line-68"></a><a name="simpleCodec"></a><span class='hs-definition'>simpleCodec</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Buffer</span> <span class='hs-varid'>from</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Buffer</span> <span class='hs-varid'>to</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Buffer</span> <span class='hs-varid'>from</span><span class='hs-layout'>,</span> <span class='hs-conid'>Buffer</span> <span class='hs-varid'>to</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-69"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BufferCodec</span> <span class='hs-varid'>from</span> <span class='hs-varid'>to</span> <span class='hs-conid'>()</span>
<a name="line-70"></a><span class='hs-definition'>simpleCodec</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BufferCodec</span> <span class='hs-layout'>{</span><span class='hs-varid'>encode</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span><span class='hs-layout'>,</span> <span class='hs-varid'>close</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span><span class='hs-layout'>,</span> <span class='hs-varid'>getState</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span><span class='hs-layout'>,</span>
<a name="line-71"></a> <span class='hs-varid'>setState</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-layout'>}</span>
<a name="line-72"></a>
<a name="line-73"></a><a name="decodeFromSingleByte"></a><span class='hs-definition'>decodeFromSingleByte</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ConvArray</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>DecodeBuffer</span>
<a name="line-74"></a><span class='hs-definition'>decodeFromSingleByte</span> <span class='hs-varid'>convArr</span>
<a name="line-75"></a> <span class='hs-varid'>input</span><span class='hs-keyglyph'>@</span><span class='hs-conid'>Buffer</span> <span class='hs-layout'>{</span> <span class='hs-varid'>bufRaw</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>iraw</span><span class='hs-layout'>,</span> <span class='hs-varid'>bufL</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>ir0</span><span class='hs-layout'>,</span> <span class='hs-varid'>bufR</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>iw</span><span class='hs-layout'>,</span> <span class='hs-varid'>bufSize</span><span class='hs-keyglyph'>=</span><span class='hs-keyword'>_</span> <span class='hs-layout'>}</span>
<a name="line-76"></a> <span class='hs-varid'>output</span><span class='hs-keyglyph'>@</span><span class='hs-conid'>Buffer</span> <span class='hs-layout'>{</span> <span class='hs-varid'>bufRaw</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>oraw</span><span class='hs-layout'>,</span> <span class='hs-varid'>bufL</span><span class='hs-keyglyph'>=</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-varid'>bufR</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>ow0</span><span class='hs-layout'>,</span> <span class='hs-varid'>bufSize</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>os</span> <span class='hs-layout'>}</span>
<a name="line-77"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span>
<a name="line-78"></a> <span class='hs-varid'>done</span> <span class='hs-varop'>!</span><span class='hs-varid'>ir</span> <span class='hs-varop'>!</span><span class='hs-varid'>ow</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-keyword'>if</span> <span class='hs-varid'>ir</span><span class='hs-varop'>==</span><span class='hs-varid'>iw</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>input</span><span class='hs-layout'>{</span> <span class='hs-varid'>bufL</span><span class='hs-keyglyph'>=</span><span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-varid'>bufR</span><span class='hs-keyglyph'>=</span><span class='hs-num'>0</span><span class='hs-layout'>}</span>
<a name="line-79"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>input</span><span class='hs-layout'>{</span> <span class='hs-varid'>bufL</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>ir</span><span class='hs-layout'>}</span><span class='hs-layout'>,</span>
<a name="line-80"></a> <span class='hs-varid'>output</span> <span class='hs-layout'>{</span><span class='hs-varid'>bufR</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>ow</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-81"></a> <span class='hs-varid'>loop</span> <span class='hs-varop'>!</span><span class='hs-varid'>ir</span> <span class='hs-varop'>!</span><span class='hs-varid'>ow</span>
<a name="line-82"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>ow</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>os</span> <span class='hs-varop'>||</span> <span class='hs-varid'>ir</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>iw</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>done</span> <span class='hs-varid'>ir</span> <span class='hs-varid'>ow</span>
<a name="line-83"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-84"></a> <span class='hs-varid'>b</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readWord8Buf</span> <span class='hs-varid'>iraw</span> <span class='hs-varid'>ir</span>
<a name="line-85"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>lookupConv</span> <span class='hs-varid'>convArr</span> <span class='hs-varid'>b</span>
<a name="line-86"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>c</span><span class='hs-varop'>==</span><span class='hs-chr'>'\0'</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>b</span> <span class='hs-varop'>/=</span> <span class='hs-num'>0</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>invalid</span> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-87"></a> <span class='hs-varid'>ow'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>writeCharBuf</span> <span class='hs-varid'>oraw</span> <span class='hs-varid'>ow</span> <span class='hs-varid'>c</span>
<a name="line-88"></a> <span class='hs-varid'>loop</span> <span class='hs-layout'>(</span><span class='hs-varid'>ir</span><span class='hs-varop'>+</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-varid'>ow'</span>
<a name="line-89"></a> <span class='hs-keyword'>where</span>
<a name="line-90"></a> <span class='hs-varid'>invalid</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>ir</span> <span class='hs-varop'>></span> <span class='hs-varid'>ir0</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>done</span> <span class='hs-varid'>ir</span> <span class='hs-varid'>ow</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>ioe_decodingError</span>
<a name="line-91"></a> <span class='hs-keyword'>in</span> <span class='hs-varid'>loop</span> <span class='hs-varid'>ir0</span> <span class='hs-varid'>ow0</span>
<a name="line-92"></a>
<a name="line-93"></a><a name="encodeToSingleByte"></a><span class='hs-definition'>encodeToSingleByte</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CompactArray</span> <span class='hs-conid'>Char</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>EncodeBuffer</span>
<a name="line-94"></a><span class='hs-definition'>encodeToSingleByte</span> <span class='hs-conid'>CompactArray</span> <span class='hs-layout'>{</span> <span class='hs-varid'>encoderMax</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maxChar</span><span class='hs-layout'>,</span>
<a name="line-95"></a> <span class='hs-varid'>encoderIndices</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>indices</span><span class='hs-layout'>,</span>
<a name="line-96"></a> <span class='hs-varid'>encoderValues</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>values</span> <span class='hs-layout'>}</span>
<a name="line-97"></a> <span class='hs-varid'>input</span><span class='hs-keyglyph'>@</span><span class='hs-conid'>Buffer</span><span class='hs-layout'>{</span> <span class='hs-varid'>bufRaw</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>iraw</span><span class='hs-layout'>,</span> <span class='hs-varid'>bufL</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>ir0</span><span class='hs-layout'>,</span> <span class='hs-varid'>bufR</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>iw</span><span class='hs-layout'>,</span> <span class='hs-varid'>bufSize</span><span class='hs-keyglyph'>=</span><span class='hs-keyword'>_</span> <span class='hs-layout'>}</span>
<a name="line-98"></a> <span class='hs-varid'>output</span><span class='hs-keyglyph'>@</span><span class='hs-conid'>Buffer</span><span class='hs-layout'>{</span> <span class='hs-varid'>bufRaw</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>oraw</span><span class='hs-layout'>,</span> <span class='hs-varid'>bufL</span><span class='hs-keyglyph'>=</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-varid'>bufR</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>ow0</span><span class='hs-layout'>,</span> <span class='hs-varid'>bufSize</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>os</span> <span class='hs-layout'>}</span>
<a name="line-99"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span>
<a name="line-100"></a> <span class='hs-varid'>done</span> <span class='hs-varop'>!</span><span class='hs-varid'>ir</span> <span class='hs-varop'>!</span><span class='hs-varid'>ow</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-keyword'>if</span> <span class='hs-varid'>ir</span><span class='hs-varop'>==</span><span class='hs-varid'>iw</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>input</span> <span class='hs-layout'>{</span> <span class='hs-varid'>bufL</span><span class='hs-keyglyph'>=</span><span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-varid'>bufR</span><span class='hs-keyglyph'>=</span><span class='hs-num'>0</span> <span class='hs-layout'>}</span>
<a name="line-101"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>input</span> <span class='hs-layout'>{</span> <span class='hs-varid'>bufL</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>ir</span> <span class='hs-layout'>}</span><span class='hs-layout'>,</span>
<a name="line-102"></a> <span class='hs-varid'>output</span> <span class='hs-layout'>{</span><span class='hs-varid'>bufR</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>ow</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-103"></a> <span class='hs-varid'>loop</span> <span class='hs-varop'>!</span><span class='hs-varid'>ir</span> <span class='hs-varop'>!</span><span class='hs-varid'>ow</span>
<a name="line-104"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>ow</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>os</span> <span class='hs-varop'>||</span> <span class='hs-varid'>ir</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>iw</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>done</span> <span class='hs-varid'>ir</span> <span class='hs-varid'>ow</span>
<a name="line-105"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-106"></a> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span><span class='hs-varid'>ir'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readCharBuf</span> <span class='hs-varid'>iraw</span> <span class='hs-varid'>ir</span>
<a name="line-107"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>lookupCompact</span> <span class='hs-varid'>maxChar</span> <span class='hs-varid'>indices</span> <span class='hs-varid'>values</span> <span class='hs-varid'>c</span> <span class='hs-keyword'>of</span>
<a name="line-108"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>invalid</span>
<a name="line-109"></a> <span class='hs-conid'>Just</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>c</span> <span class='hs-varop'>/=</span> <span class='hs-chr'>'\0'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>invalid</span>
<a name="line-110"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-111"></a> <span class='hs-varid'>writeWord8Buf</span> <span class='hs-varid'>oraw</span> <span class='hs-varid'>ow</span> <span class='hs-varid'>b</span>
<a name="line-112"></a> <span class='hs-varid'>loop</span> <span class='hs-varid'>ir'</span> <span class='hs-layout'>(</span><span class='hs-varid'>ow</span><span class='hs-varop'>+</span><span class='hs-num'>1</span><span class='hs-layout'>)</span>
<a name="line-113"></a> <span class='hs-keyword'>where</span>
<a name="line-114"></a> <span class='hs-varid'>invalid</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>ir</span> <span class='hs-varop'>></span> <span class='hs-varid'>ir0</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>done</span> <span class='hs-varid'>ir</span> <span class='hs-varid'>ow</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>ioe_encodingError</span>
<a name="line-115"></a> <span class='hs-keyword'>in</span>
<a name="line-116"></a> <span class='hs-varid'>loop</span> <span class='hs-varid'>ir0</span> <span class='hs-varid'>ow0</span>
<a name="line-117"></a>
<a name="line-118"></a><a name="ioe_decodingError"></a><span class='hs-definition'>ioe_decodingError</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span>
<a name="line-119"></a><span class='hs-definition'>ioe_decodingError</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ioException</span>
<a name="line-120"></a> <span class='hs-layout'>(</span><span class='hs-conid'>IOError</span> <span class='hs-conid'>Nothing</span> <span class='hs-conid'>InvalidArgument</span> <span class='hs-str'>"codePageEncoding"</span>
<a name="line-121"></a> <span class='hs-str'>"invalid code page byte sequence"</span> <span class='hs-conid'>Nothing</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span>
<a name="line-122"></a>
<a name="line-123"></a><a name="ioe_encodingError"></a><span class='hs-definition'>ioe_encodingError</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span>
<a name="line-124"></a><span class='hs-definition'>ioe_encodingError</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ioException</span>
<a name="line-125"></a> <span class='hs-layout'>(</span><span class='hs-conid'>IOError</span> <span class='hs-conid'>Nothing</span> <span class='hs-conid'>InvalidArgument</span> <span class='hs-str'>"codePageEncoding"</span>
<a name="line-126"></a> <span class='hs-str'>"character is not in the code page"</span> <span class='hs-conid'>Nothing</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span>
<a name="line-127"></a>
<a name="line-128"></a>
<a name="line-129"></a><span class='hs-comment'>--------------------------------------------</span>
<a name="line-130"></a><span class='hs-comment'>-- Array access functions</span>
<a name="line-131"></a>
<a name="line-132"></a><a name="lookupConv"></a><span class='hs-comment'>-- {-# INLINE lookupConv #-}</span>
<a name="line-133"></a><span class='hs-definition'>lookupConv</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ConvArray</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Char</span>
<a name="line-134"></a><span class='hs-definition'>lookupConv</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>indexChar</span> <span class='hs-varid'>a</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fromEnum</span>
<a name="line-135"></a>
<a name="line-136"></a><a name="lookupCompact"></a><span class='hs-comment'>{-# INLINE lookupCompact #-}</span>
<a name="line-137"></a><span class='hs-definition'>lookupCompact</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ConvArray</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ConvArray</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Word8</span>
<a name="line-138"></a><span class='hs-definition'>lookupCompact</span> <span class='hs-varid'>maxVal</span> <span class='hs-varid'>indexes</span> <span class='hs-varid'>values</span> <span class='hs-varid'>x</span>
<a name="line-139"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>x</span> <span class='hs-varop'>></span> <span class='hs-varid'>maxVal</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-140"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>indexWord8</span> <span class='hs-varid'>values</span> <span class='hs-varop'>$</span> <span class='hs-varid'>j</span> <span class='hs-varop'>+</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span> <span class='hs-varop'>.&.</span> <span class='hs-varid'>mask</span><span class='hs-layout'>)</span>
<a name="line-141"></a> <span class='hs-keyword'>where</span>
<a name="line-142"></a> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromEnum</span> <span class='hs-varid'>x</span>
<a name="line-143"></a> <span class='hs-varid'>mask</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-num'>1</span> <span class='hs-varop'>`shiftL`</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span> <span class='hs-comment'>-</span> <span class='hs-num'>1</span>
<a name="line-144"></a> <span class='hs-varid'>k</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>i</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-varid'>n</span>
<a name="line-145"></a> <span class='hs-varid'>j</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>indexInt</span> <span class='hs-varid'>indexes</span> <span class='hs-varid'>k</span>
<a name="line-146"></a> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>blockBitSize</span>
<a name="line-147"></a>
<a name="line-148"></a><a name="indexInt"></a><span class='hs-comment'>{-# INLINE indexInt #-}</span>
<a name="line-149"></a><span class='hs-definition'>indexInt</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ConvArray</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span>
<a name="line-150"></a><span class='hs-definition'>indexInt</span> <span class='hs-layout'>(</span><span class='hs-conid'>ConvArray</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>I</span><span class='hs-cpp'>#</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>I</span><span class='hs-cpp'>#</span> <span class='hs-layout'>(</span><span class='hs-varid'>indexInt16OffAddr</span><span class='hs-cpp'>#</span> <span class='hs-varid'>p</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-151"></a>
<a name="line-152"></a><a name="indexWord8"></a><span class='hs-comment'>{-# INLINE indexWord8 #-}</span>
<a name="line-153"></a><span class='hs-definition'>indexWord8</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ConvArray</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span>
<a name="line-154"></a><span class='hs-definition'>indexWord8</span> <span class='hs-layout'>(</span><span class='hs-conid'>ConvArray</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>I</span><span class='hs-cpp'>#</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>W8</span><span class='hs-cpp'>#</span> <span class='hs-layout'>(</span><span class='hs-varid'>indexWord8OffAddr</span><span class='hs-cpp'>#</span> <span class='hs-varid'>p</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-155"></a>
<a name="line-156"></a><a name="indexChar"></a><span class='hs-comment'>{-# INLINE indexChar #-}</span>
<a name="line-157"></a><span class='hs-definition'>indexChar</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ConvArray</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Char</span>
<a name="line-158"></a><span class='hs-definition'>indexChar</span> <span class='hs-layout'>(</span><span class='hs-conid'>ConvArray</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>I</span><span class='hs-cpp'>#</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>C</span><span class='hs-cpp'>#</span> <span class='hs-layout'>(</span><span class='hs-varid'>chr</span><span class='hs-cpp'>#</span> <span class='hs-layout'>(</span><span class='hs-varid'>indexInt16OffAddr</span><span class='hs-cpp'>#</span> <span class='hs-varid'>p</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-159"></a>
<a name="line-160"></a><span class='hs-cpp'>#endif</span>
</pre></body>
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