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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE FlexibleContexts #-}</span>
<a name="line-2"></a><span class='hs-comment'>{-# LANGUAGE CPP #-}</span>
<a name="line-3"></a><span class='hs-comment'>-- | Functions for interacting with bytes.</span>
<a name="line-4"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Conduit</span><span class='hs-varop'>.</span><span class='hs-conid'>Binary</span>
<a name="line-5"></a> <span class='hs-layout'>(</span> <span class='hs-varid'>sourceFile</span>
<a name="line-6"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sourceHandle</span>
<a name="line-7"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sourceIOHandle</span>
<a name="line-8"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sourceFileRange</span>
<a name="line-9"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sinkFile</span>
<a name="line-10"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sinkHandle</span>
<a name="line-11"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sinkIOHandle</span>
<a name="line-12"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>conduitFile</span>
<a name="line-13"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>isolate</span>
<a name="line-14"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>openFile</span>
<a name="line-15"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>head</span>
<a name="line-16"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>takeWhile</span>
<a name="line-17"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>dropWhile</span>
<a name="line-18"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>take</span>
<a name="line-19"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Conduit</span><span class='hs-varop'>.</span><span class='hs-conid'>Binary</span><span class='hs-varop'>.</span><span class='hs-varid'>lines</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'>Prelude</span> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span><span class='hs-varid'>head</span><span class='hs-layout'>,</span> <span class='hs-varid'>take</span><span class='hs-layout'>,</span> <span class='hs-varid'>takeWhile</span><span class='hs-layout'>,</span> <span class='hs-varid'>dropWhile</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'>S</span>
<a name="line-24"></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-varop'>.</span><span class='hs-conid'>Lazy</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>L</span>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Conduit</span>
<a name="line-26"></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'>Conduit</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>CL</span>
<a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Exception</span> <span class='hs-layout'>(</span><span class='hs-varid'>assert</span><span class='hs-layout'>)</span>
<a name="line-28"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span> <span class='hs-layout'>(</span><span class='hs-varid'>liftM</span><span class='hs-layout'>)</span>
<a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Class</span> <span class='hs-layout'>(</span><span class='hs-varid'>liftIO</span><span class='hs-layout'>)</span>
<a name="line-30"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>IO</span>
<a name="line-31"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-varop'>.</span><span class='hs-conid'>Trans</span><span class='hs-varop'>.</span><span class='hs-conid'>Resource</span> <span class='hs-layout'>(</span><span class='hs-varid'>withIO</span><span class='hs-layout'>,</span> <span class='hs-varid'>release</span><span class='hs-layout'>)</span>
<a name="line-32"></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>
<a name="line-33"></a><span class='hs-cpp'>#if CABAL_OS_WINDOWS</span>
<a name="line-34"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Win32File</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>F</span>
<a name="line-35"></a><span class='hs-cpp'>#elif NO_HANDLES</span>
<a name="line-36"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>PosixFile</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>F</span>
<a name="line-37"></a><span class='hs-cpp'>#endif</span>
<a name="line-38"></a>
<a name="line-39"></a><a name="openFile"></a><span class='hs-comment'>-- | Open a file 'IO.Handle' safely by automatically registering a release</span>
<a name="line-40"></a><span class='hs-comment'>-- action.</span>
<a name="line-41"></a><span class='hs-comment'>--</span>
<a name="line-42"></a><span class='hs-comment'>-- While you are not required to call @hClose@ on the resulting handle, you</span>
<a name="line-43"></a><span class='hs-comment'>-- should do so as early as possible to free scarce resources.</span>
<a name="line-44"></a><span class='hs-comment'>--</span>
<a name="line-45"></a><span class='hs-comment'>-- Since 0.2.0</span>
<a name="line-46"></a><span class='hs-definition'>openFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ResourceIO</span> <span class='hs-varid'>m</span>
<a name="line-47"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>FilePath</span>
<a name="line-48"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>IOMode</span>
<a name="line-49"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ResourceT</span> <span class='hs-varid'>m</span> <span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Handle</span>
<a name="line-50"></a><span class='hs-definition'>openFile</span> <span class='hs-varid'>fp</span> <span class='hs-varid'>mode</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fmap</span> <span class='hs-varid'>snd</span> <span class='hs-varop'>$</span> <span class='hs-varid'>withIO</span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-varid'>openBinaryFile</span> <span class='hs-varid'>fp</span> <span class='hs-varid'>mode</span><span class='hs-layout'>)</span> <span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-varid'>hClose</span>
<a name="line-51"></a>
<a name="line-52"></a><a name="sourceFile"></a><span class='hs-comment'>-- | Stream the contents of a file as binary data.</span>
<a name="line-53"></a><span class='hs-comment'>--</span>
<a name="line-54"></a><span class='hs-comment'>-- Since 0.2.0</span>
<a name="line-55"></a><span class='hs-definition'>sourceFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ResourceIO</span> <span class='hs-varid'>m</span>
<a name="line-56"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>FilePath</span>
<a name="line-57"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Source</span> <span class='hs-varid'>m</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
<a name="line-58"></a><span class='hs-definition'>sourceFile</span> <span class='hs-varid'>fp</span> <span class='hs-keyglyph'>=</span>
<a name="line-59"></a><span class='hs-cpp'>#if CABAL_OS_WINDOWS || NO_HANDLES</span>
<a name="line-60"></a> <span class='hs-varid'>sourceIO</span> <span class='hs-layout'>(</span><span class='hs-conid'>F</span><span class='hs-varop'>.</span><span class='hs-varid'>openRead</span> <span class='hs-varid'>fp</span><span class='hs-layout'>)</span>
<a name="line-61"></a> <span class='hs-conid'>F</span><span class='hs-varop'>.</span><span class='hs-varid'>close</span>
<a name="line-62"></a> <span class='hs-layout'>(</span><span class='hs-varid'>liftIO</span> <span class='hs-varop'>.</span> <span class='hs-conid'>F</span><span class='hs-varop'>.</span><span class='hs-varid'>read</span><span class='hs-layout'>)</span>
<a name="line-63"></a><span class='hs-cpp'>#else</span>
<a name="line-64"></a> <span class='hs-varid'>sourceIOHandle</span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-varid'>openBinaryFile</span> <span class='hs-varid'>fp</span> <span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>ReadMode</span><span class='hs-layout'>)</span>
<a name="line-65"></a><span class='hs-cpp'>#endif</span>
<a name="line-66"></a>
<a name="line-67"></a><a name="sourceHandle"></a><span class='hs-comment'>-- | Stream the contents of a 'IO.Handle' as binary data. Note that this</span>
<a name="line-68"></a><span class='hs-comment'>-- function will /not/ automatically close the @Handle@ when processing</span>
<a name="line-69"></a><span class='hs-comment'>-- completes, since it did not acquire the @Handle@ in the first place.</span>
<a name="line-70"></a><span class='hs-comment'>--</span>
<a name="line-71"></a><span class='hs-comment'>-- Since 0.2.0</span>
<a name="line-72"></a><span class='hs-definition'>sourceHandle</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ResourceIO</span> <span class='hs-varid'>m</span>
<a name="line-73"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Handle</span>
<a name="line-74"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Source</span> <span class='hs-varid'>m</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
<a name="line-75"></a><span class='hs-definition'>sourceHandle</span> <span class='hs-varid'>h</span> <span class='hs-keyglyph'>=</span>
<a name="line-76"></a> <span class='hs-varid'>src</span>
<a name="line-77"></a> <span class='hs-keyword'>where</span>
<a name="line-78"></a> <span class='hs-varid'>src</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Source</span> <span class='hs-varid'>pull</span> <span class='hs-varid'>close</span>
<a name="line-79"></a>
<a name="line-80"></a> <span class='hs-varid'>pull</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-81"></a> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-layout'>(</span><span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>hGetSome</span> <span class='hs-varid'>h</span> <span class='hs-num'>4096</span><span class='hs-layout'>)</span>
<a name="line-82"></a> <span class='hs-keyword'>if</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>bs</span>
<a name="line-83"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-conid'>Closed</span>
<a name="line-84"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Open</span> <span class='hs-varid'>src</span> <span class='hs-varid'>bs</span>
<a name="line-85"></a>
<a name="line-86"></a> <span class='hs-varid'>close</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-87"></a>
<a name="line-88"></a><a name="sourceIOHandle"></a><span class='hs-comment'>-- | An alternative to 'sourceHandle'.</span>
<a name="line-89"></a><span class='hs-comment'>-- Instead of taking a pre-opened 'IO.Handle', it takes an action that opens</span>
<a name="line-90"></a><span class='hs-comment'>-- a 'IO.Handle' (in read mode), so that it can open it only when needed</span>
<a name="line-91"></a><span class='hs-comment'>-- and close it as soon as possible.</span>
<a name="line-92"></a><span class='hs-comment'>--</span>
<a name="line-93"></a><span class='hs-comment'>-- Since 0.2.0</span>
<a name="line-94"></a><span class='hs-definition'>sourceIOHandle</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ResourceIO</span> <span class='hs-varid'>m</span>
<a name="line-95"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Handle</span>
<a name="line-96"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Source</span> <span class='hs-varid'>m</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
<a name="line-97"></a><span class='hs-definition'>sourceIOHandle</span> <span class='hs-varid'>alloc</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sourceIO</span> <span class='hs-varid'>alloc</span> <span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-varid'>hClose</span>
<a name="line-98"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>handle</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-99"></a> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-layout'>(</span><span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>hGetSome</span> <span class='hs-varid'>handle</span> <span class='hs-num'>4096</span><span class='hs-layout'>)</span>
<a name="line-100"></a> <span class='hs-keyword'>if</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>bs</span>
<a name="line-101"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-conid'>IOClosed</span>
<a name="line-102"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>IOOpen</span> <span class='hs-varid'>bs</span><span class='hs-layout'>)</span>
<a name="line-103"></a>
<a name="line-104"></a><a name="sinkHandle"></a><span class='hs-comment'>-- | Stream all incoming data to the given 'IO.Handle'. Note that this function</span>
<a name="line-105"></a><span class='hs-comment'>-- will /not/ automatically close the @Handle@ when processing completes.</span>
<a name="line-106"></a><span class='hs-comment'>--</span>
<a name="line-107"></a><span class='hs-comment'>-- Since 0.2.0</span>
<a name="line-108"></a><span class='hs-definition'>sinkHandle</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ResourceIO</span> <span class='hs-varid'>m</span>
<a name="line-109"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Handle</span>
<a name="line-110"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Sink</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span>
<a name="line-111"></a><span class='hs-definition'>sinkHandle</span> <span class='hs-varid'>h</span> <span class='hs-keyglyph'>=</span>
<a name="line-112"></a> <span class='hs-conid'>SinkData</span> <span class='hs-varid'>push</span> <span class='hs-varid'>close</span>
<a name="line-113"></a> <span class='hs-keyword'>where</span>
<a name="line-114"></a> <span class='hs-varid'>push</span> <span class='hs-varid'>input</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>liftIO</span> <span class='hs-layout'>(</span><span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>hPut</span> <span class='hs-varid'>h</span> <span class='hs-varid'>input</span><span class='hs-layout'>)</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Processing</span> <span class='hs-varid'>push</span> <span class='hs-varid'>close</span><span class='hs-layout'>)</span>
<a name="line-115"></a> <span class='hs-varid'>close</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-116"></a>
<a name="line-117"></a><a name="sinkIOHandle"></a><span class='hs-comment'>-- | An alternative to 'sinkHandle'.</span>
<a name="line-118"></a><span class='hs-comment'>-- Instead of taking a pre-opened 'IO.Handle', it takes an action that opens</span>
<a name="line-119"></a><span class='hs-comment'>-- a 'IO.Handle' (in write mode), so that it can open it only when needed</span>
<a name="line-120"></a><span class='hs-comment'>-- and close it as soon as possible.</span>
<a name="line-121"></a><span class='hs-comment'>--</span>
<a name="line-122"></a><span class='hs-comment'>-- Since 0.2.0</span>
<a name="line-123"></a><span class='hs-definition'>sinkIOHandle</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ResourceIO</span> <span class='hs-varid'>m</span>
<a name="line-124"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Handle</span>
<a name="line-125"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Sink</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span>
<a name="line-126"></a><span class='hs-definition'>sinkIOHandle</span> <span class='hs-varid'>alloc</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sinkIO</span> <span class='hs-varid'>alloc</span> <span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-varid'>hClose</span>
<a name="line-127"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>handle</span> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>liftIO</span> <span class='hs-layout'>(</span><span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>hPut</span> <span class='hs-varid'>handle</span> <span class='hs-varid'>bs</span><span class='hs-layout'>)</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>IOProcessing</span><span class='hs-layout'>)</span>
<a name="line-128"></a> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-varop'>$</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span>
<a name="line-129"></a>
<a name="line-130"></a><a name="sourceFileRange"></a><span class='hs-comment'>-- | Stream the contents of a file as binary data, starting from a certain</span>
<a name="line-131"></a><span class='hs-comment'>-- offset and only consuming up to a certain number of bytes.</span>
<a name="line-132"></a><span class='hs-comment'>--</span>
<a name="line-133"></a><span class='hs-comment'>-- Since 0.2.0</span>
<a name="line-134"></a><span class='hs-definition'>sourceFileRange</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ResourceIO</span> <span class='hs-varid'>m</span>
<a name="line-135"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>FilePath</span>
<a name="line-136"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Integer</span> <span class='hs-comment'>-- ^ Offset</span>
<a name="line-137"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Integer</span> <span class='hs-comment'>-- ^ Maximum count</span>
<a name="line-138"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Source</span> <span class='hs-varid'>m</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
<a name="line-139"></a><span class='hs-definition'>sourceFileRange</span> <span class='hs-varid'>fp</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>count</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Source</span>
<a name="line-140"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>sourcePull</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-141"></a> <span class='hs-layout'>(</span><span class='hs-varid'>key</span><span class='hs-layout'>,</span> <span class='hs-varid'>handle</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>withIO</span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-varid'>openBinaryFile</span> <span class='hs-varid'>fp</span> <span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>ReadMode</span><span class='hs-layout'>)</span> <span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-varid'>hClose</span>
<a name="line-142"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>offset</span> <span class='hs-keyword'>of</span>
<a name="line-143"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-144"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>off</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-varid'>hSeek</span> <span class='hs-varid'>handle</span> <span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>AbsoluteSeek</span> <span class='hs-varid'>off</span>
<a name="line-145"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>count</span> <span class='hs-keyword'>of</span>
<a name="line-146"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pullUnlimited</span> <span class='hs-varid'>handle</span> <span class='hs-varid'>key</span>
<a name="line-147"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pullLimited</span> <span class='hs-varid'>c</span> <span class='hs-varid'>handle</span> <span class='hs-varid'>key</span>
<a name="line-148"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sourceClose</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-149"></a> <span class='hs-layout'>}</span>
<a name="line-150"></a> <span class='hs-keyword'>where</span>
<a name="line-151"></a> <span class='hs-varid'>pullUnlimited</span> <span class='hs-varid'>handle</span> <span class='hs-varid'>key</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-152"></a> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>hGetSome</span> <span class='hs-varid'>handle</span> <span class='hs-num'>4096</span>
<a name="line-153"></a> <span class='hs-keyword'>if</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>bs</span>
<a name="line-154"></a> <span class='hs-keyword'>then</span> <span class='hs-keyword'>do</span>
<a name="line-155"></a> <span class='hs-varid'>release</span> <span class='hs-varid'>key</span>
<a name="line-156"></a> <span class='hs-varid'>return</span> <span class='hs-conid'>Closed</span>
<a name="line-157"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-158"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>src</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Source</span>
<a name="line-159"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>sourcePull</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pullUnlimited</span> <span class='hs-varid'>handle</span> <span class='hs-varid'>key</span>
<a name="line-160"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sourceClose</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>release</span> <span class='hs-varid'>key</span>
<a name="line-161"></a> <span class='hs-layout'>}</span>
<a name="line-162"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Open</span> <span class='hs-varid'>src</span> <span class='hs-varid'>bs</span>
<a name="line-163"></a>
<a name="line-164"></a> <span class='hs-varid'>pullLimited</span> <span class='hs-varid'>c0</span> <span class='hs-varid'>handle</span> <span class='hs-varid'>key</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-165"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromInteger</span> <span class='hs-varid'>c0</span>
<a name="line-166"></a> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>hGetSome</span> <span class='hs-varid'>handle</span> <span class='hs-layout'>(</span><span class='hs-varid'>min</span> <span class='hs-varid'>c</span> <span class='hs-num'>4096</span><span class='hs-layout'>)</span>
<a name="line-167"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>c'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>c</span> <span class='hs-comment'>-</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>bs</span>
<a name="line-168"></a> <span class='hs-varid'>assert</span> <span class='hs-layout'>(</span><span class='hs-varid'>c'</span> <span class='hs-varop'>>=</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-169"></a> <span class='hs-keyword'>if</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>bs</span>
<a name="line-170"></a> <span class='hs-keyword'>then</span> <span class='hs-keyword'>do</span>
<a name="line-171"></a> <span class='hs-varid'>release</span> <span class='hs-varid'>key</span>
<a name="line-172"></a> <span class='hs-varid'>return</span> <span class='hs-conid'>Closed</span>
<a name="line-173"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-174"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>src</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Source</span>
<a name="line-175"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>sourcePull</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pullLimited</span> <span class='hs-layout'>(</span><span class='hs-varid'>toInteger</span> <span class='hs-varid'>c'</span><span class='hs-layout'>)</span> <span class='hs-varid'>handle</span> <span class='hs-varid'>key</span>
<a name="line-176"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sourceClose</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>release</span> <span class='hs-varid'>key</span>
<a name="line-177"></a> <span class='hs-layout'>}</span>
<a name="line-178"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Open</span> <span class='hs-varid'>src</span> <span class='hs-varid'>bs</span>
<a name="line-179"></a>
<a name="line-180"></a><a name="sinkFile"></a><span class='hs-comment'>-- | Stream all incoming data to the given file.</span>
<a name="line-181"></a><span class='hs-comment'>--</span>
<a name="line-182"></a><span class='hs-comment'>-- Since 0.2.0</span>
<a name="line-183"></a><span class='hs-definition'>sinkFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ResourceIO</span> <span class='hs-varid'>m</span>
<a name="line-184"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>FilePath</span>
<a name="line-185"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Sink</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span>
<a name="line-186"></a><span class='hs-definition'>sinkFile</span> <span class='hs-varid'>fp</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sinkIOHandle</span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-varid'>openBinaryFile</span> <span class='hs-varid'>fp</span> <span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>WriteMode</span><span class='hs-layout'>)</span>
<a name="line-187"></a>
<a name="line-188"></a><a name="conduitFile"></a><span class='hs-comment'>-- | Stream the contents of the input to a file, and also send it along the</span>
<a name="line-189"></a><span class='hs-comment'>-- pipeline. Similar in concept to the Unix command @tee@.</span>
<a name="line-190"></a><span class='hs-comment'>--</span>
<a name="line-191"></a><span class='hs-comment'>-- Since 0.2.0</span>
<a name="line-192"></a><span class='hs-definition'>conduitFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ResourceIO</span> <span class='hs-varid'>m</span>
<a name="line-193"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>FilePath</span>
<a name="line-194"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Conduit</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-varid'>m</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
<a name="line-195"></a><span class='hs-definition'>conduitFile</span> <span class='hs-varid'>fp</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>conduitIO</span>
<a name="line-196"></a> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-varid'>openBinaryFile</span> <span class='hs-varid'>fp</span> <span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>WriteMode</span><span class='hs-layout'>)</span>
<a name="line-197"></a> <span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-varid'>hClose</span>
<a name="line-198"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>handle</span> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-199"></a> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>hPut</span> <span class='hs-varid'>handle</span> <span class='hs-varid'>bs</span>
<a name="line-200"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>IOProducing</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>bs</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-201"></a> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-varop'>$</span> <span class='hs-varid'>return</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span>
<a name="line-202"></a>
<a name="line-203"></a><a name="isolate"></a><span class='hs-comment'>-- | Ensure that only up to the given number of bytes are consume by the inner</span>
<a name="line-204"></a><span class='hs-comment'>-- sink. Note that this does /not/ ensure that all of those bytes are in fact</span>
<a name="line-205"></a><span class='hs-comment'>-- consumed.</span>
<a name="line-206"></a><span class='hs-comment'>--</span>
<a name="line-207"></a><span class='hs-comment'>-- Since 0.2.0</span>
<a name="line-208"></a><span class='hs-definition'>isolate</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Resource</span> <span class='hs-varid'>m</span>
<a name="line-209"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Int</span>
<a name="line-210"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Conduit</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-varid'>m</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
<a name="line-211"></a><span class='hs-definition'>isolate</span> <span class='hs-varid'>count0</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>conduitState</span>
<a name="line-212"></a> <span class='hs-varid'>count0</span>
<a name="line-213"></a> <span class='hs-varid'>push</span>
<a name="line-214"></a> <span class='hs-varid'>close</span>
<a name="line-215"></a> <span class='hs-keyword'>where</span>
<a name="line-216"></a> <span class='hs-varid'>push</span> <span class='hs-num'>0</span> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>StateFinished</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>bs</span><span class='hs-layout'>)</span> <span class='hs-conid'>[]</span>
<a name="line-217"></a> <span class='hs-varid'>push</span> <span class='hs-varid'>count</span> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-218"></a> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>splitAt</span> <span class='hs-varid'>count</span> <span class='hs-varid'>bs</span>
<a name="line-219"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>count'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>count</span> <span class='hs-comment'>-</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>a</span>
<a name="line-220"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span>
<a name="line-221"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>count'</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span>
<a name="line-222"></a> <span class='hs-keyword'>then</span> <span class='hs-conid'>StateFinished</span> <span class='hs-layout'>(</span><span class='hs-keyword'>if</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>b</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>Nothing</span> <span class='hs-keyword'>else</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-keyword'>if</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>[]</span> <span class='hs-keyword'>else</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-223"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>assert</span> <span class='hs-layout'>(</span><span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-conid'>StateProducing</span> <span class='hs-varid'>count'</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-224"></a> <span class='hs-varid'>close</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>[]</span>
<a name="line-225"></a>
<a name="line-226"></a><a name="head"></a><span class='hs-comment'>-- | Return the next byte from the stream, if available.</span>
<a name="line-227"></a><span class='hs-comment'>--</span>
<a name="line-228"></a><span class='hs-comment'>-- Since 0.2.0</span>
<a name="line-229"></a><span class='hs-definition'>head</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Resource</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Sink</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>Word8</span><span class='hs-layout'>)</span>
<a name="line-230"></a><span class='hs-definition'>head</span> <span class='hs-keyglyph'>=</span>
<a name="line-231"></a> <span class='hs-conid'>SinkData</span> <span class='hs-varid'>push</span> <span class='hs-varid'>close</span>
<a name="line-232"></a> <span class='hs-keyword'>where</span>
<a name="line-233"></a> <span class='hs-varid'>push</span> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'>=</span>
<a name="line-234"></a> <span class='hs-keyword'>case</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>uncons</span> <span class='hs-varid'>bs</span> <span class='hs-keyword'>of</span>
<a name="line-235"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Processing</span> <span class='hs-varid'>push</span> <span class='hs-varid'>close</span>
<a name="line-236"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-layout'>,</span> <span class='hs-varid'>bs'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-237"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>lo</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>bs'</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>Nothing</span> <span class='hs-keyword'>else</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>bs'</span>
<a name="line-238"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Done</span> <span class='hs-varid'>lo</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span>
<a name="line-239"></a> <span class='hs-varid'>close</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span>
<a name="line-240"></a>
<a name="line-241"></a><a name="takeWhile"></a><span class='hs-comment'>-- | Return all bytes while the predicate returns @True@.</span>
<a name="line-242"></a><span class='hs-comment'>--</span>
<a name="line-243"></a><span class='hs-comment'>-- Since 0.2.0</span>
<a name="line-244"></a><span class='hs-definition'>takeWhile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Resource</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-layout'>(</span><span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Conduit</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-varid'>m</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
<a name="line-245"></a><span class='hs-definition'>takeWhile</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span>
<a name="line-246"></a> <span class='hs-varid'>conduit</span>
<a name="line-247"></a> <span class='hs-keyword'>where</span>
<a name="line-248"></a> <span class='hs-varid'>conduit</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Conduit</span> <span class='hs-varid'>push</span> <span class='hs-varid'>close</span>
<a name="line-249"></a> <span class='hs-varid'>push</span> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-250"></a> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>span</span> <span class='hs-varid'>p</span> <span class='hs-varid'>bs</span>
<a name="line-251"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span>
<a name="line-252"></a> <span class='hs-keyword'>if</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>y</span>
<a name="line-253"></a> <span class='hs-keyword'>then</span> <span class='hs-conid'>Producing</span> <span class='hs-varid'>conduit</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span>
<a name="line-254"></a> <span class='hs-keyword'>else</span> <span class='hs-conid'>Finished</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-keyword'>if</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>[]</span> <span class='hs-keyword'>else</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-255"></a> <span class='hs-varid'>close</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>[]</span>
<a name="line-256"></a>
<a name="line-257"></a><a name="dropWhile"></a><span class='hs-comment'>-- | Ignore all bytes while the predicate returns @True@.</span>
<a name="line-258"></a><span class='hs-comment'>--</span>
<a name="line-259"></a><span class='hs-comment'>-- Since 0.2.0</span>
<a name="line-260"></a><span class='hs-definition'>dropWhile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Resource</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-layout'>(</span><span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Sink</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span>
<a name="line-261"></a><span class='hs-definition'>dropWhile</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span>
<a name="line-262"></a> <span class='hs-conid'>SinkData</span> <span class='hs-varid'>push</span> <span class='hs-varid'>close</span>
<a name="line-263"></a> <span class='hs-keyword'>where</span>
<a name="line-264"></a> <span class='hs-varid'>push</span> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-265"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>bs'</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>dropWhile</span> <span class='hs-varid'>p</span> <span class='hs-varid'>bs</span>
<a name="line-266"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span>
<a name="line-267"></a> <span class='hs-keyword'>if</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>bs'</span>
<a name="line-268"></a> <span class='hs-keyword'>then</span> <span class='hs-conid'>Processing</span> <span class='hs-varid'>push</span> <span class='hs-varid'>close</span>
<a name="line-269"></a> <span class='hs-keyword'>else</span> <span class='hs-conid'>Done</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>bs'</span><span class='hs-layout'>)</span> <span class='hs-conid'>()</span>
<a name="line-270"></a> <span class='hs-varid'>close</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-271"></a>
<a name="line-272"></a><a name="take"></a><span class='hs-comment'>-- | Take the given number of bytes, if available.</span>
<a name="line-273"></a><span class='hs-comment'>--</span>
<a name="line-274"></a><span class='hs-comment'>-- Since 0.2.0</span>
<a name="line-275"></a><span class='hs-definition'>take</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Resource</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Sink</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-varid'>m</span> <span class='hs-conid'>L</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
<a name="line-276"></a><span class='hs-definition'>take</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>L</span><span class='hs-varop'>.</span><span class='hs-varid'>fromChunks</span> <span class='hs-varop'>`liftM`</span> <span class='hs-layout'>(</span><span class='hs-varid'>isolate</span> <span class='hs-varid'>n</span> <span class='hs-varop'>=$</span> <span class='hs-conid'>CL</span><span class='hs-varop'>.</span><span class='hs-varid'>consume</span><span class='hs-layout'>)</span>
<a name="line-277"></a>
<a name="line-278"></a><a name="lines"></a><span class='hs-comment'>-- | Split the input bytes into lines. In other words, split on the LF byte</span>
<a name="line-279"></a><span class='hs-comment'>-- (10), and strip it from the output.</span>
<a name="line-280"></a><span class='hs-comment'>--</span>
<a name="line-281"></a><span class='hs-comment'>-- Since 0.2.0</span>
<a name="line-282"></a><span class='hs-definition'>lines</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Resource</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Conduit</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-varid'>m</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
<a name="line-283"></a><span class='hs-definition'>lines</span> <span class='hs-keyglyph'>=</span>
<a name="line-284"></a> <span class='hs-varid'>conduitState</span> <span class='hs-varid'>id</span> <span class='hs-varid'>push</span> <span class='hs-varid'>close</span>
<a name="line-285"></a> <span class='hs-keyword'>where</span>
<a name="line-286"></a> <span class='hs-varid'>push</span> <span class='hs-varid'>front</span> <span class='hs-varid'>bs'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>StateProducing</span> <span class='hs-varid'>leftover</span> <span class='hs-varid'>ls</span>
<a name="line-287"></a> <span class='hs-keyword'>where</span>
<a name="line-288"></a> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>front</span> <span class='hs-varid'>bs'</span>
<a name="line-289"></a> <span class='hs-layout'>(</span><span class='hs-varid'>leftover</span><span class='hs-layout'>,</span> <span class='hs-varid'>ls</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getLines</span> <span class='hs-varid'>id</span> <span class='hs-varid'>bs</span>
<a name="line-290"></a>
<a name="line-291"></a> <span class='hs-varid'>getLines</span> <span class='hs-varid'>front</span> <span class='hs-varid'>bs</span>
<a name="line-292"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>S</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-layout'>(</span><span class='hs-varid'>id</span><span class='hs-layout'>,</span> <span class='hs-varid'>front</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span>
<a name="line-293"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>append</span> <span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>front</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span>
<a name="line-294"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getLines</span> <span class='hs-layout'>(</span><span class='hs-varid'>front</span> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>drop</span> <span class='hs-num'>1</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-295"></a> <span class='hs-keyword'>where</span>
<a name="line-296"></a> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>breakByte</span> <span class='hs-num'>10</span> <span class='hs-varid'>bs</span>
<a name="line-297"></a>
<a name="line-298"></a> <span class='hs-varid'>close</span> <span class='hs-varid'>front</span>
<a name="line-299"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>S</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'>return</span> <span class='hs-conid'>[]</span>
<a name="line-300"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>bs</span><span class='hs-keyglyph'>]</span>
<a name="line-301"></a> <span class='hs-keyword'>where</span>
<a name="line-302"></a> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>front</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span>
</pre></body>
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