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<title>src/Network/Socket/SendFile/Portable.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE CPP #-}</span>
<a name="line-2"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Network</span><span class='hs-varop'>.</span><span class='hs-conid'>Socket</span><span class='hs-varop'>.</span><span class='hs-conid'>SendFile</span><span class='hs-varop'>.</span><span class='hs-conid'>Portable</span>
<a name="line-3"></a> <span class='hs-layout'>(</span> <span class='hs-varid'>sendFile</span>
<a name="line-4"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sendFileIterWith</span>
<a name="line-5"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sendFile'</span>
<a name="line-6"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sendFileIterWith'</span>
<a name="line-7"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sendFile''</span>
<a name="line-8"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sendFileIterWith''</span>
<a name="line-9"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>unsafeSendFile</span>
<a name="line-10"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>unsafeSendFileIterWith</span>
<a name="line-11"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>unsafeSendFile'</span>
<a name="line-12"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>unsafeSendFile''</span>
<a name="line-13"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>unsafeSendFileIterWith'</span>
<a name="line-14"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>unsafeSendFileIterWith''</span>
<a name="line-15"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sendFileMode</span>
<a name="line-16"></a> <span class='hs-layout'>)</span>
<a name="line-17"></a> <span class='hs-keyword'>where</span>
<a name="line-18"></a>
<a name="line-19"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Char8</span> <span class='hs-layout'>(</span><span class='hs-varid'>hGet</span><span class='hs-layout'>,</span> <span class='hs-varid'>hPut</span><span class='hs-layout'>,</span> <span class='hs-varid'>length</span><span class='hs-layout'>,</span> <span class='hs-conid'>ByteString</span><span class='hs-layout'>)</span>
<a name="line-20"></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'>Char8</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>C</span>
<a name="line-21"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Network</span><span class='hs-varop'>.</span><span class='hs-conid'>Socket</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-layout'>(</span><span class='hs-varid'>send</span><span class='hs-layout'>)</span>
<a name="line-22"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Network</span><span class='hs-varop'>.</span><span class='hs-conid'>Socket</span> <span class='hs-layout'>(</span><span class='hs-conid'>Socket</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'>fdSocket</span><span class='hs-layout'>)</span>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Network</span><span class='hs-varop'>.</span><span class='hs-conid'>Socket</span><span class='hs-varop'>.</span><span class='hs-conid'>SendFile</span><span class='hs-varop'>.</span><span class='hs-conid'>Iter</span> <span class='hs-layout'>(</span><span class='hs-conid'>Iter</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'>runIter</span><span class='hs-layout'>)</span>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Network</span><span class='hs-varop'>.</span><span class='hs-conid'>Socket</span><span class='hs-varop'>.</span><span class='hs-conid'>SendFile</span><span class='hs-varop'>.</span><span class='hs-conid'>Util</span> <span class='hs-layout'>(</span><span class='hs-varid'>wrapSendFile'</span><span class='hs-layout'>)</span>
<a name="line-25"></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'>length</span><span class='hs-layout'>)</span>
<a name="line-26"></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-layout'>(</span><span class='hs-conid'>Handle</span><span class='hs-layout'>,</span> <span class='hs-conid'>IOMode</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>SeekMode</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'>hFileSize</span><span class='hs-layout'>,</span> <span class='hs-varid'>hFlush</span><span class='hs-layout'>,</span> <span class='hs-varid'>hIsEOF</span><span class='hs-layout'>,</span> <span class='hs-varid'>hSeek</span><span class='hs-layout'>,</span> <span class='hs-varid'>withBinaryFile</span><span class='hs-layout'>)</span>
<a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Posix</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span> <span class='hs-layout'>(</span><span class='hs-conid'>Fd</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-28"></a><span class='hs-cpp'>#ifdef __GLASGOW_HASKELL__</span>
<a name="line-29"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ >= 611</span>
<a name="line-30"></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'>Error</span>
<a name="line-31"></a><span class='hs-cpp'>#endif</span>
<a name="line-32"></a><span class='hs-cpp'>#endif </span>
<a name="line-33"></a>
<a name="line-34"></a>
<a name="line-35"></a><a name="sendFileMode"></a><span class='hs-definition'>sendFileMode</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span>
<a name="line-36"></a><span class='hs-definition'>sendFileMode</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"PORTABLE_SENDFILE"</span>
<a name="line-37"></a>
<a name="line-38"></a><a name="sendFileIterWith''"></a><span class='hs-definition'>sendFileIterWith''</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-conid'>Iter</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Handle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span>
<a name="line-39"></a><span class='hs-definition'>sendFileIterWith''</span> <span class='hs-varid'>stepper</span> <span class='hs-keyglyph'>=</span>
<a name="line-40"></a> <span class='hs-varid'>wrapSendFile'</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>outs</span> <span class='hs-varid'>inp</span> <span class='hs-varid'>blockSize</span> <span class='hs-varid'>off</span> <span class='hs-varid'>count</span> <span class='hs-keyglyph'>-></span>
<a name="line-41"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>hSeek</span> <span class='hs-varid'>inp</span> <span class='hs-conid'>AbsoluteSeek</span> <span class='hs-varid'>off</span>
<a name="line-42"></a> <span class='hs-varid'>stepper</span> <span class='hs-layout'>(</span><span class='hs-varid'>sendFileIterS</span> <span class='hs-varid'>outs</span> <span class='hs-varid'>inp</span> <span class='hs-varid'>blockSize</span> <span class='hs-comment'>{- off -}</span> <span class='hs-varid'>count</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span>
<a name="line-43"></a>
<a name="line-44"></a><a name="sendFile''"></a><span class='hs-definition'>sendFile''</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Handle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-45"></a><span class='hs-definition'>sendFile''</span> <span class='hs-varid'>outs</span> <span class='hs-varid'>inh</span> <span class='hs-varid'>off</span> <span class='hs-varid'>count</span> <span class='hs-keyglyph'>=</span>
<a name="line-46"></a> <span class='hs-keyword'>do</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>sendFileIterWith''</span> <span class='hs-varid'>runIter</span> <span class='hs-varid'>outs</span> <span class='hs-varid'>inh</span> <span class='hs-varid'>count</span> <span class='hs-varid'>off</span> <span class='hs-varid'>count</span>
<a name="line-47"></a> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-48"></a>
<a name="line-49"></a><a name="unsafeSendFileIterWith''"></a><span class='hs-definition'>unsafeSendFileIterWith''</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-conid'>Iter</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Handle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Handle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span>
<a name="line-50"></a><span class='hs-definition'>unsafeSendFileIterWith''</span> <span class='hs-varid'>stepper</span> <span class='hs-keyglyph'>=</span>
<a name="line-51"></a> <span class='hs-varid'>wrapSendFile'</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>outp</span> <span class='hs-varid'>inp</span> <span class='hs-varid'>blockSize</span> <span class='hs-varid'>off</span> <span class='hs-varid'>count</span> <span class='hs-keyglyph'>-></span>
<a name="line-52"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>hSeek</span> <span class='hs-varid'>inp</span> <span class='hs-conid'>AbsoluteSeek</span> <span class='hs-varid'>off</span>
<a name="line-53"></a> <span class='hs-varid'>a</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>stepper</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafeSendFileIter</span> <span class='hs-varid'>outp</span> <span class='hs-varid'>inp</span> <span class='hs-varid'>blockSize</span> <span class='hs-varid'>count</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span>
<a name="line-54"></a> <span class='hs-varid'>hFlush</span> <span class='hs-varid'>outp</span>
<a name="line-55"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>a</span>
<a name="line-56"></a>
<a name="line-57"></a><a name="unsafeSendFile''"></a><span class='hs-definition'>unsafeSendFile''</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Handle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Handle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-58"></a><span class='hs-definition'>unsafeSendFile''</span> <span class='hs-varid'>outh</span> <span class='hs-varid'>inh</span> <span class='hs-varid'>off</span> <span class='hs-varid'>count</span> <span class='hs-keyglyph'>=</span>
<a name="line-59"></a> <span class='hs-keyword'>do</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>unsafeSendFileIterWith''</span> <span class='hs-varid'>runIter</span> <span class='hs-varid'>outh</span> <span class='hs-varid'>inh</span> <span class='hs-varid'>count</span> <span class='hs-varid'>off</span> <span class='hs-varid'>count</span>
<a name="line-60"></a> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-61"></a>
<a name="line-62"></a><a name="sendFileIterS"></a><span class='hs-definition'>sendFileIterS</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-comment'>-- ^ output network socket</span>
<a name="line-63"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Handle</span> <span class='hs-comment'>-- ^ input handle</span>
<a name="line-64"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-comment'>-- ^ maximum number of bytes to send at once</span>
<a name="line-65"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-comment'>-- ^ total number of bytes to send</span>
<a name="line-66"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>ByteString</span>
<a name="line-67"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Iter</span>
<a name="line-68"></a><span class='hs-definition'>sendFileIterS</span> <span class='hs-sel'>_socket</span> <span class='hs-sel'>_inh</span> <span class='hs-sel'>_blockSize</span> <span class='hs-comment'>{- _off -}</span> <span class='hs-num'>0</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Done</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span>
<a name="line-69"></a><span class='hs-definition'>sendFileIterS</span> <span class='hs-varid'>socket</span> <span class='hs-varid'>inh</span> <span class='hs-varid'>blockSize</span> <span class='hs-comment'>{- off -}</span> <span class='hs-varid'>remaining</span> <span class='hs-varid'>mBuf</span> <span class='hs-keyglyph'>=</span>
<a name="line-70"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>buf</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>nextBlock</span>
<a name="line-71"></a> <span class='hs-varid'>nsent</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>send</span> <span class='hs-varid'>socket</span> <span class='hs-varid'>buf</span>
<a name="line-72"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>leftOver</span> <span class='hs-keyglyph'>=</span>
<a name="line-73"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>nsent</span> <span class='hs-varop'><</span> <span class='hs-layout'>(</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>buf</span><span class='hs-layout'>)</span>
<a name="line-74"></a> <span class='hs-keyword'>then</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>drop</span> <span class='hs-varid'>nsent</span> <span class='hs-varid'>buf</span><span class='hs-layout'>)</span>
<a name="line-75"></a> <span class='hs-keyword'>else</span> <span class='hs-conid'>Nothing</span>
<a name="line-76"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>cont</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sendFileIterS</span> <span class='hs-varid'>socket</span> <span class='hs-varid'>inh</span> <span class='hs-varid'>blockSize</span> <span class='hs-comment'>{- (off + (fromIntegral nsent)) -}</span> <span class='hs-layout'>(</span><span class='hs-varid'>remaining</span> <span class='hs-varop'>`safeMinus`</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>nsent</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>leftOver</span>
<a name="line-77"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>nsent</span> <span class='hs-varop'><</span> <span class='hs-layout'>(</span><span class='hs-varid'>length</span> <span class='hs-varid'>buf</span><span class='hs-layout'>)</span>
<a name="line-78"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>WouldBlock</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>nsent</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Fd</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fdSocket</span> <span class='hs-varid'>socket</span><span class='hs-layout'>)</span> <span class='hs-varid'>cont</span><span class='hs-layout'>)</span>
<a name="line-79"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Sent</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>nsent</span><span class='hs-layout'>)</span> <span class='hs-varid'>cont</span><span class='hs-layout'>)</span>
<a name="line-80"></a> <span class='hs-keyword'>where</span>
<a name="line-81"></a> <span class='hs-varid'>nextBlock</span> <span class='hs-keyglyph'>=</span>
<a name="line-82"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>mBuf</span> <span class='hs-keyword'>of</span>
<a name="line-83"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>b</span>
<a name="line-84"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span>
<a name="line-85"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>eof</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>hIsEOF</span> <span class='hs-varid'>inh</span>
<a name="line-86"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>eof</span>
<a name="line-87"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>ioError</span> <span class='hs-layout'>(</span><span class='hs-varid'>mkIOError</span> <span class='hs-varid'>eofErrorType</span> <span class='hs-layout'>(</span><span class='hs-str'>"Reached EOF but was hoping to read "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>remaining</span> <span class='hs-varop'>++</span> <span class='hs-str'>" more byte(s)."</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>inh</span><span class='hs-layout'>)</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span>
<a name="line-88"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>bytes</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>min</span> <span class='hs-num'>32768</span> <span class='hs-layout'>(</span><span class='hs-varid'>min</span> <span class='hs-varid'>blockSize</span> <span class='hs-varid'>remaining</span><span class='hs-layout'>)</span>
<a name="line-89"></a> <span class='hs-varid'>hGet</span> <span class='hs-varid'>inh</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>bytes</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- we could check that we got fewer bytes than requested here, but we will send what we got and catch the EOF next time around</span>
<a name="line-90"></a>
<a name="line-91"></a><a name="safeMinus"></a><span class='hs-definition'>safeMinus</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ord</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Num</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span>
<a name="line-92"></a><span class='hs-definition'>safeMinus</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span>
<a name="line-93"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>y</span> <span class='hs-varop'>></span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-varop'>$</span> <span class='hs-str'>"y > x "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-layout'>,</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-94"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span> <span class='hs-comment'>-</span> <span class='hs-varid'>y</span>
<a name="line-95"></a>
<a name="line-96"></a><a name="unsafeSendFileIter"></a><span class='hs-definition'>unsafeSendFileIter</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Handle</span> <span class='hs-comment'>-- ^ output handle</span>
<a name="line-97"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Handle</span> <span class='hs-comment'>-- ^ input handle</span>
<a name="line-98"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-comment'>-- ^ maximum number of bytes to send at once</span>
<a name="line-99"></a><span class='hs-comment'>-- -> Integer -- ^ offset into file</span>
<a name="line-100"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-comment'>-- ^ total number of bytes to send</span>
<a name="line-101"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>ByteString</span>
<a name="line-102"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Iter</span>
<a name="line-103"></a><span class='hs-definition'>unsafeSendFileIter</span> <span class='hs-sel'>_outh</span> <span class='hs-sel'>_inh</span> <span class='hs-sel'>_blockSize</span> <span class='hs-num'>0</span> <span class='hs-sel'>_mBuf</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Done</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span>
<a name="line-104"></a><span class='hs-definition'>unsafeSendFileIter</span> <span class='hs-varid'>outh</span> <span class='hs-varid'>inh</span> <span class='hs-varid'>blockSize</span> <span class='hs-varid'>remaining</span> <span class='hs-varid'>mBuf</span> <span class='hs-keyglyph'>=</span>
<a name="line-105"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>buf</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>nextBlock</span>
<a name="line-106"></a> <span class='hs-varid'>hPut</span> <span class='hs-varid'>outh</span> <span class='hs-varid'>buf</span> <span class='hs-comment'>-- eventually this should use a non-blocking version of hPut</span>
<a name="line-107"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>nsent</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>length</span> <span class='hs-varid'>buf</span>
<a name="line-108"></a><span class='hs-comment'>{-
<a name="line-109"></a> leftOver =
<a name="line-110"></a> if nsent < (C.length buf)
<a name="line-111"></a> then Just (C.drop nsent buf)
<a name="line-112"></a> else Nothing
<a name="line-113"></a>-}</span>
<a name="line-114"></a> <span class='hs-varid'>cont</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafeSendFileIter</span> <span class='hs-varid'>outh</span> <span class='hs-varid'>inh</span> <span class='hs-varid'>blockSize</span> <span class='hs-comment'>{- (off + (fromIntegral nsent)) -}</span> <span class='hs-layout'>(</span><span class='hs-varid'>remaining</span> <span class='hs-comment'>-</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>nsent</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-conid'>Nothing</span>
<a name="line-115"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>nsent</span> <span class='hs-varop'><</span> <span class='hs-layout'>(</span><span class='hs-varid'>length</span> <span class='hs-varid'>buf</span><span class='hs-layout'>)</span>
<a name="line-116"></a> <span class='hs-keyword'>then</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>error</span> <span class='hs-str'>"unsafeSendFileIter: internal error"</span> <span class='hs-comment'>-- return (WouldBlock (fromIntegral nsent) (Fd $ fdSocket socket) cont)</span>
<a name="line-117"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Sent</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>nsent</span><span class='hs-layout'>)</span> <span class='hs-varid'>cont</span><span class='hs-layout'>)</span>
<a name="line-118"></a> <span class='hs-keyword'>where</span>
<a name="line-119"></a> <span class='hs-varid'>nextBlock</span> <span class='hs-keyglyph'>=</span>
<a name="line-120"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>mBuf</span> <span class='hs-keyword'>of</span>
<a name="line-121"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>b</span>
<a name="line-122"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span>
<a name="line-123"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>eof</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>hIsEOF</span> <span class='hs-varid'>inh</span>
<a name="line-124"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>eof</span>
<a name="line-125"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>ioError</span> <span class='hs-layout'>(</span><span class='hs-varid'>mkIOError</span> <span class='hs-varid'>eofErrorType</span> <span class='hs-layout'>(</span><span class='hs-str'>"Reached EOF but was hoping to read "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>remaining</span> <span class='hs-varop'>++</span> <span class='hs-str'>" more byte(s)."</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>inh</span><span class='hs-layout'>)</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span>
<a name="line-126"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>bytes</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>min</span> <span class='hs-num'>32768</span> <span class='hs-layout'>(</span><span class='hs-varid'>min</span> <span class='hs-varid'>blockSize</span> <span class='hs-varid'>remaining</span><span class='hs-layout'>)</span>
<a name="line-127"></a> <span class='hs-varid'>hGet</span> <span class='hs-varid'>inh</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>bytes</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- we could check that we got fewer bytes than requested here, but we will send what we got and catch the EOF next time around</span>
<a name="line-128"></a>
<a name="line-129"></a><span class='hs-comment'>-- copied from Internal.hs -- not sure how to avoid having two copies of this code yet</span>
<a name="line-130"></a>
<a name="line-131"></a><a name="sendFile"></a><span class='hs-definition'>sendFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-132"></a><span class='hs-definition'>sendFile</span> <span class='hs-varid'>outs</span> <span class='hs-varid'>infp</span> <span class='hs-keyglyph'>=</span>
<a name="line-133"></a> <span class='hs-varid'>withBinaryFile</span> <span class='hs-varid'>infp</span> <span class='hs-conid'>ReadMode</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>inp</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-134"></a> <span class='hs-varid'>count</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>hFileSize</span> <span class='hs-varid'>inp</span>
<a name="line-135"></a> <span class='hs-varid'>sendFile''</span> <span class='hs-varid'>outs</span> <span class='hs-varid'>inp</span> <span class='hs-num'>0</span> <span class='hs-varid'>count</span>
<a name="line-136"></a>
<a name="line-137"></a><a name="sendFileIterWith"></a><span class='hs-definition'>sendFileIterWith</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-conid'>Iter</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span>
<a name="line-138"></a><span class='hs-definition'>sendFileIterWith</span> <span class='hs-varid'>stepper</span> <span class='hs-varid'>outs</span> <span class='hs-varid'>infp</span> <span class='hs-varid'>blockSize</span> <span class='hs-keyglyph'>=</span>
<a name="line-139"></a> <span class='hs-varid'>withBinaryFile</span> <span class='hs-varid'>infp</span> <span class='hs-conid'>ReadMode</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>inp</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-140"></a> <span class='hs-varid'>count</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>hFileSize</span> <span class='hs-varid'>inp</span>
<a name="line-141"></a> <span class='hs-varid'>sendFileIterWith''</span> <span class='hs-varid'>stepper</span> <span class='hs-varid'>outs</span> <span class='hs-varid'>inp</span> <span class='hs-varid'>blockSize</span> <span class='hs-num'>0</span> <span class='hs-varid'>count</span>
<a name="line-142"></a>
<a name="line-143"></a><a name="sendFile'"></a><span class='hs-definition'>sendFile'</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-144"></a><span class='hs-definition'>sendFile'</span> <span class='hs-varid'>outs</span> <span class='hs-varid'>infp</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>count</span> <span class='hs-keyglyph'>=</span>
<a name="line-145"></a> <span class='hs-varid'>withBinaryFile</span> <span class='hs-varid'>infp</span> <span class='hs-conid'>ReadMode</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>inp</span> <span class='hs-keyglyph'>-></span>
<a name="line-146"></a> <span class='hs-varid'>sendFile''</span> <span class='hs-varid'>outs</span> <span class='hs-varid'>inp</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>count</span>
<a name="line-147"></a>
<a name="line-148"></a><a name="sendFileIterWith'"></a><span class='hs-definition'>sendFileIterWith'</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-conid'>Iter</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span>
<a name="line-149"></a><span class='hs-definition'>sendFileIterWith'</span> <span class='hs-varid'>stepper</span> <span class='hs-varid'>outs</span> <span class='hs-varid'>infp</span> <span class='hs-varid'>blockSize</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>count</span> <span class='hs-keyglyph'>=</span>
<a name="line-150"></a> <span class='hs-varid'>withBinaryFile</span> <span class='hs-varid'>infp</span> <span class='hs-conid'>ReadMode</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>inp</span> <span class='hs-keyglyph'>-></span>
<a name="line-151"></a> <span class='hs-varid'>sendFileIterWith''</span> <span class='hs-varid'>stepper</span> <span class='hs-varid'>outs</span> <span class='hs-varid'>inp</span> <span class='hs-varid'>blockSize</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>count</span>
<a name="line-152"></a>
<a name="line-153"></a><a name="unsafeSendFile"></a><span class='hs-definition'>unsafeSendFile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Handle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-154"></a><span class='hs-definition'>unsafeSendFile</span> <span class='hs-varid'>outp</span> <span class='hs-varid'>infp</span> <span class='hs-keyglyph'>=</span>
<a name="line-155"></a> <span class='hs-varid'>withBinaryFile</span> <span class='hs-varid'>infp</span> <span class='hs-conid'>ReadMode</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>inp</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-156"></a> <span class='hs-varid'>count</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>hFileSize</span> <span class='hs-varid'>inp</span>
<a name="line-157"></a> <span class='hs-varid'>unsafeSendFile''</span> <span class='hs-varid'>outp</span> <span class='hs-varid'>inp</span> <span class='hs-num'>0</span> <span class='hs-varid'>count</span>
<a name="line-158"></a>
<a name="line-159"></a><a name="unsafeSendFileIterWith"></a><span class='hs-definition'>unsafeSendFileIterWith</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-conid'>Iter</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Handle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span>
<a name="line-160"></a><span class='hs-definition'>unsafeSendFileIterWith</span> <span class='hs-varid'>stepper</span> <span class='hs-varid'>outp</span> <span class='hs-varid'>infp</span> <span class='hs-varid'>blockSize</span> <span class='hs-keyglyph'>=</span>
<a name="line-161"></a> <span class='hs-varid'>withBinaryFile</span> <span class='hs-varid'>infp</span> <span class='hs-conid'>ReadMode</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>inp</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-162"></a> <span class='hs-varid'>count</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>hFileSize</span> <span class='hs-varid'>inp</span>
<a name="line-163"></a> <span class='hs-varid'>unsafeSendFileIterWith''</span> <span class='hs-varid'>stepper</span> <span class='hs-varid'>outp</span> <span class='hs-varid'>inp</span> <span class='hs-varid'>blockSize</span> <span class='hs-num'>0</span> <span class='hs-varid'>count</span>
<a name="line-164"></a>
<a name="line-165"></a>
<a name="line-166"></a><a name="unsafeSendFile'"></a><span class='hs-definition'>unsafeSendFile'</span>
<a name="line-167"></a> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Handle</span> <span class='hs-comment'>-- ^ The output handle</span>
<a name="line-168"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span> <span class='hs-comment'>-- ^ The input filepath</span>
<a name="line-169"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-comment'>-- ^ The offset to start at</span>
<a name="line-170"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-comment'>-- ^ The number of bytes to send</span>
<a name="line-171"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-172"></a><span class='hs-definition'>unsafeSendFile'</span> <span class='hs-varid'>outp</span> <span class='hs-varid'>infp</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>count</span> <span class='hs-keyglyph'>=</span>
<a name="line-173"></a> <span class='hs-varid'>withBinaryFile</span> <span class='hs-varid'>infp</span> <span class='hs-conid'>ReadMode</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>inp</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-174"></a> <span class='hs-varid'>unsafeSendFile''</span> <span class='hs-varid'>outp</span> <span class='hs-varid'>inp</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>count</span>
<a name="line-175"></a>
<a name="line-176"></a><a name="unsafeSendFileIterWith'"></a><span class='hs-definition'>unsafeSendFileIterWith'</span>
<a name="line-177"></a> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-conid'>Iter</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-178"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Handle</span> <span class='hs-comment'>-- ^ The output handle</span>
<a name="line-179"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span> <span class='hs-comment'>-- ^ The input filepath</span>
<a name="line-180"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-comment'>-- ^ maximum block size</span>
<a name="line-181"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-comment'>-- ^ The offset to start at</span>
<a name="line-182"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span> <span class='hs-comment'>-- ^ The number of bytes to send</span>
<a name="line-183"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span>
<a name="line-184"></a><span class='hs-definition'>unsafeSendFileIterWith'</span> <span class='hs-varid'>stepper</span> <span class='hs-varid'>outp</span> <span class='hs-varid'>infp</span> <span class='hs-varid'>blockSize</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>count</span> <span class='hs-keyglyph'>=</span>
<a name="line-185"></a> <span class='hs-varid'>withBinaryFile</span> <span class='hs-varid'>infp</span> <span class='hs-conid'>ReadMode</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>inp</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-186"></a> <span class='hs-varid'>unsafeSendFileIterWith''</span> <span class='hs-varid'>stepper</span> <span class='hs-varid'>outp</span> <span class='hs-varid'>inp</span> <span class='hs-varid'>blockSize</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>count</span>
</pre></body>
</html>
