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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE BangPatterns #-}</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='hs-comment'>-- |</span>
<a name="line-4"></a><span class='hs-comment'>-- Module : Data.ByteString.Base64</span>
<a name="line-5"></a><span class='hs-comment'>-- Copyright : (c) 2010 Bryan O'Sullivan</span>
<a name="line-6"></a><span class='hs-comment'>--</span>
<a name="line-7"></a><span class='hs-comment'>-- License : BSD-style</span>
<a name="line-8"></a><span class='hs-comment'>-- Maintainer : bos@serpentine.com</span>
<a name="line-9"></a><span class='hs-comment'>-- Stability : experimental</span>
<a name="line-10"></a><span class='hs-comment'>-- Portability : GHC</span>
<a name="line-11"></a><span class='hs-comment'>--</span>
<a name="line-12"></a><span class='hs-comment'>-- Fast and efficient encoding and decoding of base64-encoded strings.</span>
<a name="line-13"></a>
<a name="line-14"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Base64</span>
<a name="line-15"></a> <span class='hs-layout'>(</span>
<a name="line-16"></a> <span class='hs-varid'>encode</span>
<a name="line-17"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>decode</span>
<a name="line-18"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>decodeLenient</span>
<a name="line-19"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>joinWith</span>
<a name="line-20"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-21"></a>
<a name="line-22"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Bits</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>.|.</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'>.&.</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>shiftL</span><span class='hs-layout'>,</span> <span class='hs-varid'>shiftR</span><span class='hs-layout'>)</span>
<a name="line-23"></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'>ByteString</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>B</span>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span> <span class='hs-layout'>(</span><span class='hs-conid'>ByteString</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>mallocByteString</span><span class='hs-layout'>,</span> <span class='hs-varid'>memcpy</span><span class='hs-layout'>,</span>
<a name="line-25"></a> <span class='hs-varid'>unsafeCreate</span><span class='hs-layout'>)</span>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Unsafe</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafeIndex</span><span class='hs-layout'>)</span>
<a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Word</span> <span class='hs-layout'>(</span><span class='hs-conid'>Word8</span><span class='hs-layout'>,</span> <span class='hs-conid'>Word16</span><span class='hs-layout'>,</span> <span class='hs-conid'>Word32</span><span class='hs-layout'>)</span>
<a name="line-28"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>ForeignPtr</span> <span class='hs-layout'>(</span><span class='hs-conid'>ForeignPtr</span><span class='hs-layout'>,</span> <span class='hs-varid'>mallocForeignPtrArray</span><span class='hs-layout'>,</span> <span class='hs-varid'>withForeignPtr</span><span class='hs-layout'>)</span>
<a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Ptr</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span><span class='hs-layout'>,</span> <span class='hs-varid'>castPtr</span><span class='hs-layout'>,</span> <span class='hs-varid'>minusPtr</span><span class='hs-layout'>,</span> <span class='hs-varid'>plusPtr</span><span class='hs-layout'>)</span>
<a name="line-30"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Storable</span> <span class='hs-layout'>(</span><span class='hs-varid'>peek</span><span class='hs-layout'>,</span> <span class='hs-varid'>peekElemOff</span><span class='hs-layout'>,</span> <span class='hs-varid'>poke</span><span class='hs-layout'>,</span> <span class='hs-varid'>pokeElemOff</span><span class='hs-layout'>)</span>
<a name="line-31"></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'>Unsafe</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafePerformIO</span><span class='hs-layout'>)</span>
<a name="line-32"></a>
<a name="line-33"></a><a name="peek8"></a><span class='hs-definition'>peek8</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Word8</span>
<a name="line-34"></a><span class='hs-definition'>peek8</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>peek</span>
<a name="line-35"></a>
<a name="line-36"></a><a name="poke8"></a><span class='hs-definition'>poke8</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-37"></a><span class='hs-definition'>poke8</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>poke</span>
<a name="line-38"></a>
<a name="line-39"></a><a name="peek8_32"></a><span class='hs-definition'>peek8_32</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Word32</span>
<a name="line-40"></a><span class='hs-definition'>peek8_32</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fmap</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>.</span> <span class='hs-varid'>peek8</span>
<a name="line-41"></a>
<a name="line-42"></a><a name="encode"></a><span class='hs-comment'>-- | Encode a string into base64 form. The result will always be a</span>
<a name="line-43"></a><span class='hs-comment'>-- multiple of 4 bytes in length.</span>
<a name="line-44"></a><span class='hs-definition'>encode</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteString</span>
<a name="line-45"></a><span class='hs-definition'>encode</span> <span class='hs-layout'>(</span><span class='hs-conid'>PS</span> <span class='hs-varid'>sfp</span> <span class='hs-varid'>soff</span> <span class='hs-varid'>slen</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafePerformIO</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-46"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>dlen</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>slen</span> <span class='hs-varop'>+</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span> <span class='hs-varop'>`div`</span> <span class='hs-num'>3</span><span class='hs-layout'>)</span> <span class='hs-varop'>*</span> <span class='hs-num'>4</span>
<a name="line-47"></a> <span class='hs-varid'>dfp</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mallocByteString</span> <span class='hs-varid'>dlen</span>
<a name="line-48"></a> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>alfaFP</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>aptr</span> <span class='hs-keyglyph'>-></span>
<a name="line-49"></a> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>encodeTable</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>ep</span> <span class='hs-keyglyph'>-></span>
<a name="line-50"></a> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>sfp</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>sptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-51"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>aidx</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>peek8</span> <span class='hs-layout'>(</span><span class='hs-varid'>aptr</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span>
<a name="line-52"></a> <span class='hs-varid'>sEnd</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sptr</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-layout'>(</span><span class='hs-varid'>slen</span> <span class='hs-varop'>+</span> <span class='hs-varid'>soff</span><span class='hs-layout'>)</span>
<a name="line-53"></a> <span class='hs-varid'>fill</span> <span class='hs-varop'>!</span><span class='hs-varid'>dp</span> <span class='hs-varop'>!</span><span class='hs-varid'>sp</span>
<a name="line-54"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>sp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>2</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>sEnd</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>complete</span> <span class='hs-layout'>(</span><span class='hs-varid'>castPtr</span> <span class='hs-varid'>dp</span><span class='hs-layout'>)</span> <span class='hs-varid'>sp</span>
<a name="line-55"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>{-# SCC "encode/fill" #-}</span> <span class='hs-keyword'>do</span>
<a name="line-56"></a> <span class='hs-varid'>i</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peek8_32</span> <span class='hs-varid'>sp</span>
<a name="line-57"></a> <span class='hs-varid'>j</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peek8_32</span> <span class='hs-layout'>(</span><span class='hs-varid'>sp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span>
<a name="line-58"></a> <span class='hs-varid'>k</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peek8_32</span> <span class='hs-layout'>(</span><span class='hs-varid'>sp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span>
<a name="line-59"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span> <span class='hs-varop'>`shiftL`</span> <span class='hs-num'>16</span><span class='hs-layout'>)</span> <span class='hs-varop'>.|.</span> <span class='hs-layout'>(</span><span class='hs-varid'>j</span> <span class='hs-varop'>`shiftL`</span> <span class='hs-num'>8</span><span class='hs-layout'>)</span> <span class='hs-varop'>.|.</span> <span class='hs-varid'>k</span>
<a name="line-60"></a> <span class='hs-varid'>enc</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>peekElemOff</span> <span class='hs-varid'>ep</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fromIntegral</span>
<a name="line-61"></a> <span class='hs-varid'>poke</span> <span class='hs-varid'>dp</span> <span class='hs-varop'>=<<</span> <span class='hs-varid'>enc</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>12</span><span class='hs-layout'>)</span>
<a name="line-62"></a> <span class='hs-varid'>poke</span> <span class='hs-layout'>(</span><span class='hs-varid'>dp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span> <span class='hs-varop'>=<<</span> <span class='hs-varid'>enc</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varop'>.&.</span> <span class='hs-num'>0xfff</span><span class='hs-layout'>)</span>
<a name="line-63"></a> <span class='hs-varid'>fill</span> <span class='hs-layout'>(</span><span class='hs-varid'>dp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>4</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>sp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>3</span><span class='hs-layout'>)</span>
<a name="line-64"></a> <span class='hs-varid'>complete</span> <span class='hs-varid'>dp</span> <span class='hs-varid'>sp</span>
<a name="line-65"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>sp</span> <span class='hs-varop'>==</span> <span class='hs-varid'>sEnd</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-66"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>{-# SCC "encode/complete" #-}</span> <span class='hs-keyword'>do</span>
<a name="line-67"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>peekSP</span> <span class='hs-varid'>n</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fromIntegral</span><span class='hs-layout'>)</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>peek8</span> <span class='hs-layout'>(</span><span class='hs-varid'>sp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span>
<a name="line-68"></a> <span class='hs-varid'>twoMore</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>2</span> <span class='hs-varop'>==</span> <span class='hs-varid'>sEnd</span>
<a name="line-69"></a> <span class='hs-varid'>equals</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0x3d</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word8</span>
<a name="line-70"></a> <span class='hs-comment'>{-# INLINE equals #-}</span>
<a name="line-71"></a> <span class='hs-varid'>a</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peekSP</span> <span class='hs-num'>0</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>`shiftR`</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-varop'>.&.</span> <span class='hs-num'>0xfc</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-72"></a> <span class='hs-varid'>b</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peekSP</span> <span class='hs-num'>0</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>`shiftL`</span> <span class='hs-num'>4</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-varop'>.&.</span> <span class='hs-num'>0x03</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-73"></a> <span class='hs-varop'>!</span><span class='hs-varid'>b'</span> <span class='hs-keyglyph'><-</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>twoMore</span>
<a name="line-74"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>peekSP</span> <span class='hs-num'>1</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>.|.</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-varop'>`shiftR`</span> <span class='hs-num'>4</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-varop'>.&.</span> <span class='hs-num'>0xf0</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-75"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-varid'>b</span>
<a name="line-76"></a> <span class='hs-varid'>poke8</span> <span class='hs-varid'>dp</span> <span class='hs-varop'>=<<</span> <span class='hs-varid'>aidx</span> <span class='hs-varid'>a</span>
<a name="line-77"></a> <span class='hs-varid'>poke8</span> <span class='hs-layout'>(</span><span class='hs-varid'>dp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-varop'>=<<</span> <span class='hs-varid'>aidx</span> <span class='hs-varid'>b'</span>
<a name="line-78"></a> <span class='hs-varid'>c</span> <span class='hs-keyglyph'><-</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>twoMore</span>
<a name="line-79"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>aidx</span> <span class='hs-varop'>=<<</span> <span class='hs-varid'>peekSP</span> <span class='hs-num'>1</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>`shiftL`</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-varop'>.&.</span> <span class='hs-num'>0x0f</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-80"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-varid'>equals</span>
<a name="line-81"></a> <span class='hs-varid'>poke8</span> <span class='hs-layout'>(</span><span class='hs-varid'>dp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span> <span class='hs-varid'>c</span>
<a name="line-82"></a> <span class='hs-varid'>poke8</span> <span class='hs-layout'>(</span><span class='hs-varid'>dp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>3</span><span class='hs-layout'>)</span> <span class='hs-varid'>equals</span>
<a name="line-83"></a> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>dfp</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>dptr</span> <span class='hs-keyglyph'>-></span>
<a name="line-84"></a> <span class='hs-varid'>fill</span> <span class='hs-layout'>(</span><span class='hs-varid'>castPtr</span> <span class='hs-varid'>dptr</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>sptr</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>soff</span><span class='hs-layout'>)</span>
<a name="line-85"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$!</span> <span class='hs-conid'>PS</span> <span class='hs-varid'>dfp</span> <span class='hs-num'>0</span> <span class='hs-varid'>dlen</span>
<a name="line-86"></a>
<a name="line-87"></a><a name="joinWith"></a><span class='hs-comment'>-- | Efficiently intersperse a terminator string into another at</span>
<a name="line-88"></a><span class='hs-comment'>-- regular intervals, and terminate the input with it.</span>
<a name="line-89"></a><span class='hs-comment'>--</span>
<a name="line-90"></a><span class='hs-comment'>-- Examples:</span>
<a name="line-91"></a><span class='hs-comment'>--</span>
<a name="line-92"></a><span class='hs-comment'>-- > joinWith "|" 2 "----" = "--|--|"</span>
<a name="line-93"></a><span class='hs-comment'>--</span>
<a name="line-94"></a><span class='hs-comment'>-- > joinWith "\r\n" 3 "foobarbaz" = "foo\r\nbar\r\nbaz\r\n"</span>
<a name="line-95"></a><span class='hs-definition'>joinWith</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ByteString</span> <span class='hs-comment'>-- ^ String to intersperse and end with</span>
<a name="line-96"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ Interval at which to intersperse, in bytes</span>
<a name="line-97"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteString</span> <span class='hs-comment'>-- ^ String to transform</span>
<a name="line-98"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteString</span>
<a name="line-99"></a><span class='hs-definition'>joinWith</span> <span class='hs-varid'>brk</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>PS</span> <span class='hs-varid'>bfp</span> <span class='hs-varid'>boff</span> <span class='hs-varid'>blen</span><span class='hs-layout'>)</span> <span class='hs-varid'>every</span> <span class='hs-varid'>bs</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>PS</span> <span class='hs-varid'>sfp</span> <span class='hs-varid'>soff</span> <span class='hs-varid'>slen</span><span class='hs-layout'>)</span>
<a name="line-100"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>every</span> <span class='hs-varop'><=</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"invalid interval"</span>
<a name="line-101"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>blen</span> <span class='hs-varop'><=</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>bs</span>
<a name="line-102"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>brk</span>
<a name="line-103"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span>
<a name="line-104"></a> <span class='hs-varid'>unsafeCreate</span> <span class='hs-varid'>dlen</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>dptr</span> <span class='hs-keyglyph'>-></span>
<a name="line-105"></a> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>bfp</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>bptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-106"></a> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>sfp</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>sptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-107"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>bp</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>bptr</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>boff</span>
<a name="line-108"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>dEnd</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>dptr</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>dlen</span>
<a name="line-109"></a> <span class='hs-varid'>loop</span> <span class='hs-varop'>!</span><span class='hs-varid'>dp</span> <span class='hs-varop'>!</span><span class='hs-varid'>sp</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>dp</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>dEnd</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-110"></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-111"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>min</span> <span class='hs-varid'>every</span> <span class='hs-layout'>(</span><span class='hs-varid'>dEnd</span> <span class='hs-varop'>`minusPtr`</span> <span class='hs-varid'>dp</span><span class='hs-layout'>)</span>
<a name="line-112"></a> <span class='hs-varid'>memcpy</span> <span class='hs-varid'>dp</span> <span class='hs-varid'>sp</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span>
<a name="line-113"></a> <span class='hs-varid'>memcpy</span> <span class='hs-layout'>(</span><span class='hs-varid'>dp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span> <span class='hs-varid'>bp</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>blen</span><span class='hs-layout'>)</span>
<a name="line-114"></a> <span class='hs-varid'>loop</span> <span class='hs-layout'>(</span><span class='hs-varid'>dp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span> <span class='hs-varop'>+</span> <span class='hs-varid'>blen</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>sp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>every</span><span class='hs-layout'>)</span>
<a name="line-115"></a> <span class='hs-varid'>loop</span> <span class='hs-varid'>dptr</span> <span class='hs-layout'>(</span><span class='hs-varid'>sptr</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>soff</span><span class='hs-layout'>)</span>
<a name="line-116"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>dlen</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>slen</span> <span class='hs-varop'>+</span> <span class='hs-varid'>blen</span> <span class='hs-varop'>*</span> <span class='hs-varid'>numBreaks</span>
<a name="line-117"></a> <span class='hs-varid'>numBreaks</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>slen</span> <span class='hs-varop'>`div`</span> <span class='hs-varid'>every</span>
<a name="line-118"></a>
<a name="line-119"></a><a name="decode"></a><span class='hs-comment'>-- | Decode a base64-encoded string. This function strictly follows</span>
<a name="line-120"></a><span class='hs-comment'>-- the specification in RFC 4648,</span>
<a name="line-121"></a><span class='hs-comment'>-- <<a href="http://www.apps.ietf.org/rfc/rfc4648.html">http://www.apps.ietf.org/rfc/rfc4648.html</a>>.</span>
<a name="line-122"></a><span class='hs-definition'>decode</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Either</span> <span class='hs-conid'>String</span> <span class='hs-conid'>ByteString</span>
<a name="line-123"></a><span class='hs-definition'>decode</span> <span class='hs-layout'>(</span><span class='hs-conid'>PS</span> <span class='hs-varid'>sfp</span> <span class='hs-varid'>soff</span> <span class='hs-varid'>slen</span><span class='hs-layout'>)</span>
<a name="line-124"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>drem</span> <span class='hs-varop'>/=</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Left</span> <span class='hs-str'>"invalid padding"</span>
<a name="line-125"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>dlen</span> <span class='hs-varop'><=</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Right</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span>
<a name="line-126"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafePerformIO</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-127"></a> <span class='hs-varid'>dfp</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mallocByteString</span> <span class='hs-varid'>dlen</span>
<a name="line-128"></a> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>decodeFP</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>decptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-129"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>finish</span> <span class='hs-varid'>dbytes</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Right</span> <span class='hs-varop'>$!</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>dbytes</span> <span class='hs-varop'>></span> <span class='hs-num'>0</span>
<a name="line-130"></a> <span class='hs-keyword'>then</span> <span class='hs-conid'>PS</span> <span class='hs-varid'>dfp</span> <span class='hs-num'>0</span> <span class='hs-varid'>dbytes</span>
<a name="line-131"></a> <span class='hs-keyword'>else</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span>
<a name="line-132"></a> <span class='hs-varid'>bail</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Left</span>
<a name="line-133"></a> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>sfp</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>sptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-134"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>sEnd</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sptr</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-layout'>(</span><span class='hs-varid'>slen</span> <span class='hs-varop'>+</span> <span class='hs-varid'>soff</span><span class='hs-layout'>)</span>
<a name="line-135"></a> <span class='hs-varid'>look</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-136"></a> <span class='hs-varid'>ix</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>peek8</span> <span class='hs-varid'>p</span>
<a name="line-137"></a> <span class='hs-varid'>v</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peek8</span> <span class='hs-layout'>(</span><span class='hs-varid'>decptr</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>ix</span><span class='hs-layout'>)</span>
<a name="line-138"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$!</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Word32</span>
<a name="line-139"></a> <span class='hs-varid'>fill</span> <span class='hs-varop'>!</span><span class='hs-varid'>dp</span> <span class='hs-varop'>!</span><span class='hs-varid'>sp</span> <span class='hs-varop'>!</span><span class='hs-varid'>n</span>
<a name="line-140"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>sp</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>sEnd</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>finish</span> <span class='hs-varid'>n</span>
<a name="line-141"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>{-# SCC "decode/fill" #-}</span> <span class='hs-keyword'>do</span>
<a name="line-142"></a> <span class='hs-varid'>a</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>look</span> <span class='hs-varid'>sp</span>
<a name="line-143"></a> <span class='hs-varid'>b</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>look</span> <span class='hs-layout'>(</span><span class='hs-varid'>sp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span>
<a name="line-144"></a> <span class='hs-varid'>c</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>look</span> <span class='hs-layout'>(</span><span class='hs-varid'>sp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span>
<a name="line-145"></a> <span class='hs-varid'>d</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>look</span> <span class='hs-layout'>(</span><span class='hs-varid'>sp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>3</span><span class='hs-layout'>)</span>
<a name="line-146"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-varop'>`shiftL`</span> <span class='hs-num'>18</span><span class='hs-layout'>)</span> <span class='hs-varop'>.|.</span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span> <span class='hs-varop'>`shiftL`</span> <span class='hs-num'>12</span><span class='hs-layout'>)</span> <span class='hs-varop'>.|.</span>
<a name="line-147"></a> <span class='hs-layout'>(</span><span class='hs-varid'>c</span> <span class='hs-varop'>`shiftL`</span> <span class='hs-num'>6</span><span class='hs-layout'>)</span> <span class='hs-varop'>.|.</span> <span class='hs-varid'>d</span>
<a name="line-148"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>a</span> <span class='hs-varop'>==</span> <span class='hs-varid'>done</span> <span class='hs-varop'>||</span> <span class='hs-varid'>b</span> <span class='hs-varop'>==</span> <span class='hs-varid'>done</span>
<a name="line-149"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>bail</span> <span class='hs-varop'>$</span> <span class='hs-str'>"invalid padding near offset "</span> <span class='hs-varop'>++</span>
<a name="line-150"></a> <span class='hs-varid'>show</span> <span class='hs-layout'>(</span><span class='hs-varid'>sp</span> <span class='hs-varop'>`minusPtr`</span> <span class='hs-varid'>sptr</span><span class='hs-layout'>)</span>
<a name="line-151"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>a</span> <span class='hs-varop'>.|.</span> <span class='hs-varid'>b</span> <span class='hs-varop'>.|.</span> <span class='hs-varid'>c</span> <span class='hs-varop'>.|.</span> <span class='hs-varid'>d</span> <span class='hs-varop'>==</span> <span class='hs-varid'>x</span>
<a name="line-152"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>bail</span> <span class='hs-varop'>$</span> <span class='hs-str'>"invalid base64 encoding near offset "</span> <span class='hs-varop'>++</span>
<a name="line-153"></a> <span class='hs-varid'>show</span> <span class='hs-layout'>(</span><span class='hs-varid'>sp</span> <span class='hs-varop'>`minusPtr`</span> <span class='hs-varid'>sptr</span><span class='hs-layout'>)</span>
<a name="line-154"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-155"></a> <span class='hs-varid'>poke8</span> <span class='hs-varid'>dp</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>16</span><span class='hs-layout'>)</span>
<a name="line-156"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>c</span> <span class='hs-varop'>==</span> <span class='hs-varid'>done</span>
<a name="line-157"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>finish</span> <span class='hs-varop'>$</span> <span class='hs-varid'>n</span> <span class='hs-varop'>+</span> <span class='hs-num'>1</span>
<a name="line-158"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-159"></a> <span class='hs-varid'>poke8</span> <span class='hs-layout'>(</span><span class='hs-varid'>dp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>8</span><span class='hs-layout'>)</span>
<a name="line-160"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>d</span> <span class='hs-varop'>==</span> <span class='hs-varid'>done</span>
<a name="line-161"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>finish</span> <span class='hs-varop'>$!</span> <span class='hs-varid'>n</span> <span class='hs-varop'>+</span> <span class='hs-num'>2</span>
<a name="line-162"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-163"></a> <span class='hs-varid'>poke8</span> <span class='hs-layout'>(</span><span class='hs-varid'>dp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>w</span>
<a name="line-164"></a> <span class='hs-varid'>fill</span> <span class='hs-layout'>(</span><span class='hs-varid'>dp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>3</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>sp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>4</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span><span class='hs-varop'>+</span><span class='hs-num'>3</span><span class='hs-layout'>)</span>
<a name="line-165"></a> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>dfp</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>dptr</span> <span class='hs-keyglyph'>-></span>
<a name="line-166"></a> <span class='hs-varid'>fill</span> <span class='hs-varid'>dptr</span> <span class='hs-layout'>(</span><span class='hs-varid'>sptr</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>soff</span><span class='hs-layout'>)</span> <span class='hs-num'>0</span>
<a name="line-167"></a> <span class='hs-keyword'>where</span> <span class='hs-layout'>(</span><span class='hs-varid'>di</span><span class='hs-layout'>,</span><span class='hs-varid'>drem</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>slen</span> <span class='hs-varop'>`divMod`</span> <span class='hs-num'>4</span>
<a name="line-168"></a> <span class='hs-varid'>dlen</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>di</span> <span class='hs-varop'>*</span> <span class='hs-num'>3</span>
<a name="line-169"></a>
<a name="line-170"></a><a name="D"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>D</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>D</span> <span class='hs-layout'>{</span> <span class='hs-varid'>dNext</span> <span class='hs-keyglyph'>::</span> <span class='hs-comment'>{-# UNPACK #-}</span> <span class='hs-varop'>!</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span><span class='hs-layout'>)</span>
<a name="line-171"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>dValue</span> <span class='hs-keyglyph'>::</span> <span class='hs-comment'>{-# UNPACK #-}</span> <span class='hs-varop'>!</span><span class='hs-conid'>Word32</span> <span class='hs-layout'>}</span>
<a name="line-172"></a>
<a name="line-173"></a><a name="decodeLenient"></a><span class='hs-comment'>-- | Decode a base64-encoded string. This function is lenient in</span>
<a name="line-174"></a><span class='hs-comment'>-- following the specification from RFC 4648,</span>
<a name="line-175"></a><span class='hs-comment'>-- <<a href="http://www.apps.ietf.org/rfc/rfc4648.html">http://www.apps.ietf.org/rfc/rfc4648.html</a>>, and will not generate</span>
<a name="line-176"></a><span class='hs-comment'>-- parse errors no matter how poor its input.</span>
<a name="line-177"></a><span class='hs-definition'>decodeLenient</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteString</span>
<a name="line-178"></a><span class='hs-definition'>decodeLenient</span> <span class='hs-layout'>(</span><span class='hs-conid'>PS</span> <span class='hs-varid'>sfp</span> <span class='hs-varid'>soff</span> <span class='hs-varid'>slen</span><span class='hs-layout'>)</span>
<a name="line-179"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>dlen</span> <span class='hs-varop'><=</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span>
<a name="line-180"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafePerformIO</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-181"></a> <span class='hs-varid'>dfp</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mallocByteString</span> <span class='hs-varid'>dlen</span>
<a name="line-182"></a> <span class='hs-varid'>dbytes</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>decodeFP</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>decptr</span> <span class='hs-keyglyph'>-></span>
<a name="line-183"></a> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>sfp</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>sptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-184"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>sEnd</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sptr</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-layout'>(</span><span class='hs-varid'>slen</span> <span class='hs-varop'>+</span> <span class='hs-varid'>soff</span><span class='hs-layout'>)</span>
<a name="line-185"></a> <span class='hs-varid'>fill</span> <span class='hs-varop'>!</span><span class='hs-varid'>dp</span> <span class='hs-varop'>!</span><span class='hs-varid'>sp</span> <span class='hs-varop'>!</span><span class='hs-varid'>n</span>
<a name="line-186"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>sp</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>sEnd</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varid'>n</span>
<a name="line-187"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>{-# SCC "decodeLenient/fill" #-}</span> <span class='hs-keyword'>do</span>
<a name="line-188"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>look</span> <span class='hs-varid'>skipPad</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>go</span>
<a name="line-189"></a> <span class='hs-keyword'>where</span>
<a name="line-190"></a> <span class='hs-varid'>go</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>p</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>sEnd</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$!</span> <span class='hs-conid'>D</span> <span class='hs-layout'>(</span><span class='hs-varid'>sEnd</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>done</span>
<a name="line-191"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>{-# SCC "decodeLenient/look" #-}</span> <span class='hs-keyword'>do</span>
<a name="line-192"></a> <span class='hs-varid'>ix</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>peek8</span> <span class='hs-varid'>p</span>
<a name="line-193"></a> <span class='hs-varid'>v</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peek8</span> <span class='hs-layout'>(</span><span class='hs-varid'>decptr</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>ix</span><span class='hs-layout'>)</span>
<a name="line-194"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>v</span> <span class='hs-varop'>==</span> <span class='hs-varid'>x</span> <span class='hs-varop'>||</span> <span class='hs-layout'>(</span><span class='hs-varid'>v</span> <span class='hs-varop'>==</span> <span class='hs-varid'>done</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>skipPad</span><span class='hs-layout'>)</span>
<a name="line-195"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>go</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span>
<a name="line-196"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$!</span> <span class='hs-conid'>D</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>v</span><span class='hs-layout'>)</span>
<a name="line-197"></a> <span class='hs-varop'>!</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>look</span> <span class='hs-conid'>True</span> <span class='hs-varid'>sp</span>
<a name="line-198"></a> <span class='hs-varop'>!</span><span class='hs-varid'>b</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>look</span> <span class='hs-conid'>True</span> <span class='hs-layout'>(</span><span class='hs-varid'>dNext</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-199"></a> <span class='hs-varop'>!</span><span class='hs-varid'>c</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>look</span> <span class='hs-conid'>False</span> <span class='hs-layout'>(</span><span class='hs-varid'>dNext</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span>
<a name="line-200"></a> <span class='hs-varop'>!</span><span class='hs-varid'>d</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>look</span> <span class='hs-conid'>False</span> <span class='hs-layout'>(</span><span class='hs-varid'>dNext</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span>
<a name="line-201"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>dValue</span> <span class='hs-varid'>a</span> <span class='hs-varop'>`shiftL`</span> <span class='hs-num'>18</span><span class='hs-layout'>)</span> <span class='hs-varop'>.|.</span> <span class='hs-layout'>(</span><span class='hs-varid'>dValue</span> <span class='hs-varid'>b</span> <span class='hs-varop'>`shiftL`</span> <span class='hs-num'>12</span><span class='hs-layout'>)</span> <span class='hs-varop'>.|.</span>
<a name="line-202"></a> <span class='hs-layout'>(</span><span class='hs-varid'>dValue</span> <span class='hs-varid'>c</span> <span class='hs-varop'>`shiftL`</span> <span class='hs-num'>6</span><span class='hs-layout'>)</span> <span class='hs-varop'>.|.</span> <span class='hs-varid'>dValue</span> <span class='hs-varid'>d</span>
<a name="line-203"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>dValue</span> <span class='hs-varid'>a</span> <span class='hs-varop'>==</span> <span class='hs-varid'>done</span> <span class='hs-varop'>||</span> <span class='hs-varid'>dValue</span> <span class='hs-varid'>b</span> <span class='hs-varop'>==</span> <span class='hs-varid'>done</span>
<a name="line-204"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-varid'>n</span>
<a name="line-205"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-206"></a> <span class='hs-varid'>poke8</span> <span class='hs-varid'>dp</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>16</span><span class='hs-layout'>)</span>
<a name="line-207"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>dValue</span> <span class='hs-varid'>c</span> <span class='hs-varop'>==</span> <span class='hs-varid'>done</span>
<a name="line-208"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$!</span> <span class='hs-varid'>n</span> <span class='hs-varop'>+</span> <span class='hs-num'>1</span>
<a name="line-209"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-210"></a> <span class='hs-varid'>poke8</span> <span class='hs-layout'>(</span><span class='hs-varid'>dp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>8</span><span class='hs-layout'>)</span>
<a name="line-211"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>dValue</span> <span class='hs-varid'>d</span> <span class='hs-varop'>==</span> <span class='hs-varid'>done</span>
<a name="line-212"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$!</span> <span class='hs-varid'>n</span> <span class='hs-varop'>+</span> <span class='hs-num'>2</span>
<a name="line-213"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-214"></a> <span class='hs-varid'>poke8</span> <span class='hs-layout'>(</span><span class='hs-varid'>dp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>w</span>
<a name="line-215"></a> <span class='hs-varid'>fill</span> <span class='hs-layout'>(</span><span class='hs-varid'>dp</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>3</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>dNext</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span><span class='hs-varop'>+</span><span class='hs-num'>3</span><span class='hs-layout'>)</span>
<a name="line-216"></a> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>dfp</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>dptr</span> <span class='hs-keyglyph'>-></span>
<a name="line-217"></a> <span class='hs-varid'>fill</span> <span class='hs-varid'>dptr</span> <span class='hs-layout'>(</span><span class='hs-varid'>sptr</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>soff</span><span class='hs-layout'>)</span> <span class='hs-num'>0</span>
<a name="line-218"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$!</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>dbytes</span> <span class='hs-varop'>></span> <span class='hs-num'>0</span>
<a name="line-219"></a> <span class='hs-keyword'>then</span> <span class='hs-conid'>PS</span> <span class='hs-varid'>dfp</span> <span class='hs-num'>0</span> <span class='hs-varid'>dbytes</span>
<a name="line-220"></a> <span class='hs-keyword'>else</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span>
<a name="line-221"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>dlen</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>slen</span> <span class='hs-varop'>+</span> <span class='hs-num'>3</span><span class='hs-layout'>)</span> <span class='hs-varop'>`div`</span> <span class='hs-num'>4</span><span class='hs-layout'>)</span> <span class='hs-varop'>*</span> <span class='hs-num'>3</span>
<a name="line-222"></a>
<a name="line-223"></a><a name="alphabet"></a><span class='hs-definition'>alphabet</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ByteString</span>
<a name="line-224"></a><a name="alfaFP"></a><span class='hs-definition'>alfaFP</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ForeignPtr</span> <span class='hs-conid'>Word8</span>
<a name="line-225"></a><span class='hs-definition'>alphabet</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>PS</span> <span class='hs-varid'>alfaFP</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>65</span><span class='hs-keyglyph'>..</span><span class='hs-num'>90</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>97</span><span class='hs-keyglyph'>..</span><span class='hs-num'>122</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>48</span><span class='hs-keyglyph'>..</span><span class='hs-num'>57</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>43</span><span class='hs-layout'>,</span><span class='hs-num'>47</span><span class='hs-keyglyph'>]</span>
<a name="line-226"></a><span class='hs-comment'>{-# NOINLINE alphabet #-}</span>
<a name="line-227"></a>
<a name="line-228"></a><a name="encodeTable"></a><span class='hs-definition'>encodeTable</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ForeignPtr</span> <span class='hs-conid'>Word16</span>
<a name="line-229"></a><span class='hs-definition'>encodeTable</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafePerformIO</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-230"></a> <span class='hs-varid'>fp</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mallocForeignPtrArray</span> <span class='hs-num'>4096</span>
<a name="line-231"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>ix</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unsafeIndex</span> <span class='hs-varid'>alphabet</span>
<a name="line-232"></a> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>fp</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span>
<a name="line-233"></a> <span class='hs-varid'>sequence_</span> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>pokeElemOff</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-varid'>j</span><span class='hs-varop'>*</span><span class='hs-num'>64</span><span class='hs-varop'>+</span><span class='hs-varid'>k</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>ix</span> <span class='hs-varid'>k</span> <span class='hs-varop'>`shiftL`</span> <span class='hs-num'>8</span><span class='hs-layout'>)</span> <span class='hs-varop'>.|.</span> <span class='hs-varid'>ix</span> <span class='hs-varid'>j</span><span class='hs-layout'>)</span>
<a name="line-234"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>j</span> <span class='hs-keyglyph'><-</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>0</span><span class='hs-keyglyph'>..</span><span class='hs-num'>64</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-varid'>k</span> <span class='hs-keyglyph'><-</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>0</span><span class='hs-keyglyph'>..</span><span class='hs-num'>64</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>]</span>
<a name="line-235"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>fp</span>
<a name="line-236"></a><span class='hs-comment'>{-# NOINLINE encodeTable #-}</span>
<a name="line-237"></a>
<a name="line-238"></a><a name="decodeFP"></a><span class='hs-definition'>decodeFP</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ForeignPtr</span> <span class='hs-conid'>Word8</span>
<a name="line-239"></a><span class='hs-conid'>PS</span> <span class='hs-varid'>decodeFP</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-varop'>$</span> <span class='hs-varid'>replicate</span> <span class='hs-num'>43</span> <span class='hs-varid'>x</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>62</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-varid'>x</span><span class='hs-layout'>,</span><span class='hs-num'>63</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>52</span><span class='hs-keyglyph'>..</span><span class='hs-num'>61</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span>
<a name="line-240"></a> <span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-varid'>done</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-varid'>x</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>0</span><span class='hs-keyglyph'>..</span><span class='hs-num'>25</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</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-varid'>x</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-varid'>x</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>26</span><span class='hs-keyglyph'>..</span><span class='hs-num'>51</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span> <span class='hs-varid'>replicate</span> <span class='hs-num'>133</span> <span class='hs-varid'>x</span>
<a name="line-241"></a><span class='hs-comment'>{-# NOINLINE decodeFP #-}</span>
<a name="line-242"></a>
<a name="line-243"></a><a name="x"></a><span class='hs-definition'>x</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Integral</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>a</span>
<a name="line-244"></a><span class='hs-definition'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>255</span>
<a name="line-245"></a><span class='hs-comment'>{-# INLINE x #-}</span>
<a name="line-246"></a>
<a name="line-247"></a><a name="done"></a><span class='hs-definition'>done</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Integral</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>a</span>
<a name="line-248"></a><span class='hs-definition'>done</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>99</span>
<a name="line-249"></a><span class='hs-comment'>{-# INLINE done #-}</span>
</pre></body>
</html>
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