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<pre><a name="line-1"></a><span class='hs-comment'>{-# LINE 1 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-2"></a><span class='hs-comment'>{-# LANGUAGE ForeignFunctionInterface #-}</span>
<a name="line-3"></a><span class='hs-comment'>{-# LINE 2 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-4"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-5"></a><span class='hs-comment'>-- |</span>
<a name="line-6"></a><span class='hs-comment'>-- Copyright : (c) 2006-2008 Duncan Coutts</span>
<a name="line-7"></a><span class='hs-comment'>-- License : BSD-style</span>
<a name="line-8"></a><span class='hs-comment'>--</span>
<a name="line-9"></a><span class='hs-comment'>-- Maintainer : duncan@haskell.org</span>
<a name="line-10"></a><span class='hs-comment'>-- Stability : provisional</span>
<a name="line-11"></a><span class='hs-comment'>-- Portability : portable (H98 + FFI)</span>
<a name="line-12"></a><span class='hs-comment'>--</span>
<a name="line-13"></a><span class='hs-comment'>-- Zlib wrapper layer</span>
<a name="line-14"></a><span class='hs-comment'>--</span>
<a name="line-15"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-16"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Codec</span><span class='hs-varop'>.</span><span class='hs-conid'>Compression</span><span class='hs-varop'>.</span><span class='hs-conid'>Zlib</span><span class='hs-varop'>.</span><span class='hs-conid'>Stream</span> <span class='hs-layout'>(</span>
<a name="line-17"></a>
<a name="line-18"></a> <span class='hs-comment'>-- * The Zlib state monad</span>
<a name="line-19"></a> <span class='hs-conid'>Stream</span><span class='hs-layout'>,</span>
<a name="line-20"></a> <span class='hs-varid'>run</span><span class='hs-layout'>,</span>
<a name="line-21"></a> <span class='hs-varid'>unsafeInterleave</span><span class='hs-layout'>,</span>
<a name="line-22"></a> <span class='hs-varid'>unsafeLiftIO</span><span class='hs-layout'>,</span>
<a name="line-23"></a> <span class='hs-varid'>finalise</span><span class='hs-layout'>,</span>
<a name="line-24"></a>
<a name="line-25"></a> <span class='hs-comment'>-- * Initialisation</span>
<a name="line-26"></a> <span class='hs-varid'>deflateInit</span><span class='hs-layout'>,</span>
<a name="line-27"></a> <span class='hs-varid'>inflateInit</span><span class='hs-layout'>,</span>
<a name="line-28"></a>
<a name="line-29"></a> <span class='hs-comment'>-- ** Initialisation parameters</span>
<a name="line-30"></a> <span class='hs-conid'>Format</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-31"></a> <span class='hs-varid'>gzipFormat</span><span class='hs-layout'>,</span>
<a name="line-32"></a> <span class='hs-varid'>zlibFormat</span><span class='hs-layout'>,</span>
<a name="line-33"></a> <span class='hs-varid'>rawFormat</span><span class='hs-layout'>,</span>
<a name="line-34"></a> <span class='hs-varid'>gzipOrZlibFormat</span><span class='hs-layout'>,</span>
<a name="line-35"></a> <span class='hs-conid'>CompressionLevel</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-36"></a> <span class='hs-varid'>defaultCompression</span><span class='hs-layout'>,</span>
<a name="line-37"></a> <span class='hs-varid'>noCompression</span><span class='hs-layout'>,</span>
<a name="line-38"></a> <span class='hs-varid'>bestSpeed</span><span class='hs-layout'>,</span>
<a name="line-39"></a> <span class='hs-varid'>bestCompression</span><span class='hs-layout'>,</span>
<a name="line-40"></a> <span class='hs-varid'>compressionLevel</span><span class='hs-layout'>,</span>
<a name="line-41"></a> <span class='hs-conid'>Method</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-42"></a> <span class='hs-varid'>deflateMethod</span><span class='hs-layout'>,</span>
<a name="line-43"></a> <span class='hs-conid'>WindowBits</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-44"></a> <span class='hs-varid'>defaultWindowBits</span><span class='hs-layout'>,</span>
<a name="line-45"></a> <span class='hs-varid'>windowBits</span><span class='hs-layout'>,</span>
<a name="line-46"></a> <span class='hs-conid'>MemoryLevel</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-47"></a> <span class='hs-varid'>defaultMemoryLevel</span><span class='hs-layout'>,</span>
<a name="line-48"></a> <span class='hs-varid'>minMemoryLevel</span><span class='hs-layout'>,</span>
<a name="line-49"></a> <span class='hs-varid'>maxMemoryLevel</span><span class='hs-layout'>,</span>
<a name="line-50"></a> <span class='hs-varid'>memoryLevel</span><span class='hs-layout'>,</span>
<a name="line-51"></a> <span class='hs-conid'>CompressionStrategy</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-52"></a> <span class='hs-varid'>defaultStrategy</span><span class='hs-layout'>,</span>
<a name="line-53"></a> <span class='hs-varid'>filteredStrategy</span><span class='hs-layout'>,</span>
<a name="line-54"></a> <span class='hs-varid'>huffmanOnlyStrategy</span><span class='hs-layout'>,</span>
<a name="line-55"></a>
<a name="line-56"></a> <span class='hs-comment'>-- * The buisness</span>
<a name="line-57"></a> <span class='hs-varid'>deflate</span><span class='hs-layout'>,</span>
<a name="line-58"></a> <span class='hs-varid'>inflate</span><span class='hs-layout'>,</span>
<a name="line-59"></a> <span class='hs-conid'>Status</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-60"></a> <span class='hs-conid'>Flush</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-61"></a> <span class='hs-conid'>ErrorCode</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-62"></a>
<a name="line-63"></a> <span class='hs-comment'>-- * Buffer management</span>
<a name="line-64"></a> <span class='hs-comment'>-- ** Input buffer</span>
<a name="line-65"></a> <span class='hs-varid'>pushInputBuffer</span><span class='hs-layout'>,</span>
<a name="line-66"></a> <span class='hs-varid'>inputBufferEmpty</span><span class='hs-layout'>,</span>
<a name="line-67"></a>
<a name="line-68"></a> <span class='hs-comment'>-- ** Output buffer</span>
<a name="line-69"></a> <span class='hs-varid'>pushOutputBuffer</span><span class='hs-layout'>,</span>
<a name="line-70"></a> <span class='hs-varid'>popOutputBuffer</span><span class='hs-layout'>,</span>
<a name="line-71"></a> <span class='hs-varid'>outputBufferBytesAvailable</span><span class='hs-layout'>,</span>
<a name="line-72"></a> <span class='hs-varid'>outputBufferSpaceRemaining</span><span class='hs-layout'>,</span>
<a name="line-73"></a> <span class='hs-varid'>outputBufferFull</span><span class='hs-layout'>,</span>
<a name="line-74"></a>
<a name="line-75"></a>
<a name="line-76"></a><span class='hs-comment'>{-# LINE 79 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-77"></a>
<a name="line-78"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-79"></a>
<a name="line-80"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span>
<a name="line-81"></a> <span class='hs-layout'>(</span> <span class='hs-conid'>Word8</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ptr</span><span class='hs-layout'>,</span> <span class='hs-varid'>nullPtr</span><span class='hs-layout'>,</span> <span class='hs-varid'>plusPtr</span><span class='hs-layout'>,</span> <span class='hs-varid'>peekByteOff</span><span class='hs-layout'>,</span> <span class='hs-varid'>pokeByteOff</span><span class='hs-layout'>,</span> <span class='hs-varid'>mallocBytes</span>
<a name="line-82"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>ForeignPtr</span><span class='hs-layout'>,</span> <span class='hs-conid'>FinalizerPtr</span><span class='hs-layout'>,</span> <span class='hs-varid'>newForeignPtr_</span><span class='hs-layout'>,</span> <span class='hs-varid'>addForeignPtrFinalizer</span>
<a name="line-83"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>withForeignPtr</span><span class='hs-layout'>,</span> <span class='hs-varid'>touchForeignPtr</span>
<a name="line-84"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>unsafeForeignPtrToPtr</span><span class='hs-layout'>,</span> <span class='hs-varid'>unsafePerformIO</span> <span class='hs-layout'>)</span>
<a name="line-85"></a>
<a name="line-86"></a><span class='hs-comment'>{-# LINE 88 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-87"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span>
<a name="line-88"></a> <span class='hs-layout'>(</span> <span class='hs-varid'>finalizeForeignPtr</span> <span class='hs-layout'>)</span>
<a name="line-89"></a>
<a name="line-90"></a><span class='hs-comment'>{-# LINE 91 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-91"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>C</span>
<a name="line-92"></a> <span class='hs-layout'>(</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>,</span> <span class='hs-conid'>CUInt</span><span class='hs-layout'>,</span> <span class='hs-conid'>CChar</span><span class='hs-layout'>,</span> <span class='hs-conid'>CString</span><span class='hs-layout'>,</span> <span class='hs-varid'>withCAString</span><span class='hs-layout'>,</span> <span class='hs-varid'>peekCAString</span> <span class='hs-layout'>)</span>
<a name="line-93"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span> <span class='hs-layout'>(</span><span class='hs-varid'>nullForeignPtr</span><span class='hs-layout'>)</span>
<a name="line-94"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Unsafe</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafeInterleaveIO</span><span class='hs-layout'>)</span>
<a name="line-95"></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-96"></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-97"></a>
<a name="line-98"></a><span class='hs-comment'>{-# LINE 100 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-99"></a>
<a name="line-100"></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-101"></a>
<a name="line-102"></a>
<a name="line-103"></a><span class='hs-comment'>{-# LINE 104 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-104"></a>
<a name="line-105"></a>
<a name="line-106"></a><a name="pushInputBuffer"></a><span class='hs-definition'>pushInputBuffer</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ForeignPtr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>()</span>
<a name="line-107"></a><span class='hs-definition'>pushInputBuffer</span> <span class='hs-varid'>inBuf'</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>length</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-108"></a>
<a name="line-109"></a> <span class='hs-comment'>-- must not push a new input buffer if the last one is not used up</span>
<a name="line-110"></a> <span class='hs-varid'>inAvail</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getInAvail</span>
<a name="line-111"></a> <span class='hs-varid'>assert</span> <span class='hs-layout'>(</span><span class='hs-varid'>inAvail</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-112"></a>
<a name="line-113"></a> <span class='hs-comment'>-- Now that we're setting a new input buffer, we can be sure that zlib no</span>
<a name="line-114"></a> <span class='hs-comment'>-- longer has a reference to the old one. Therefore this is the last point</span>
<a name="line-115"></a> <span class='hs-comment'>-- at which the old buffer had to be retained. It's safe to release now.</span>
<a name="line-116"></a> <span class='hs-varid'>inBuf</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getInBuf</span>
<a name="line-117"></a> <span class='hs-varid'>unsafeLiftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>touchForeignPtr</span> <span class='hs-varid'>inBuf</span>
<a name="line-118"></a>
<a name="line-119"></a> <span class='hs-comment'>-- now set the available input buffer ptr and length</span>
<a name="line-120"></a> <span class='hs-varid'>setInBuf</span> <span class='hs-varid'>inBuf'</span>
<a name="line-121"></a> <span class='hs-varid'>setInAvail</span> <span class='hs-varid'>length</span>
<a name="line-122"></a> <span class='hs-varid'>setInNext</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafeForeignPtrToPtr</span> <span class='hs-varid'>inBuf'</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>offset</span><span class='hs-layout'>)</span>
<a name="line-123"></a> <span class='hs-comment'>-- Note the 'unsafe'. We are passing the raw ptr inside inBuf' to zlib.</span>
<a name="line-124"></a> <span class='hs-comment'>-- To make this safe we need to hold on to the ForeignPtr for at least as</span>
<a name="line-125"></a> <span class='hs-comment'>-- long as zlib is using the underlying raw ptr.</span>
<a name="line-126"></a>
<a name="line-127"></a>
<a name="line-128"></a><a name="inputBufferEmpty"></a><span class='hs-definition'>inputBufferEmpty</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Bool</span>
<a name="line-129"></a><span class='hs-definition'>inputBufferEmpty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getInAvail</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>return</span> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-num'>0</span><span class='hs-layout'>)</span>
<a name="line-130"></a>
<a name="line-131"></a>
<a name="line-132"></a><a name="pushOutputBuffer"></a><span class='hs-definition'>pushOutputBuffer</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ForeignPtr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>()</span>
<a name="line-133"></a><span class='hs-definition'>pushOutputBuffer</span> <span class='hs-varid'>outBuf'</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>length</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-134"></a>
<a name="line-135"></a> <span class='hs-comment'>--must not push a new buffer if there is still data in the old one</span>
<a name="line-136"></a> <span class='hs-varid'>outAvail</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getOutAvail</span>
<a name="line-137"></a> <span class='hs-varid'>assert</span> <span class='hs-layout'>(</span><span class='hs-varid'>outAvail</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-138"></a> <span class='hs-comment'>-- Note that there may still be free space in the output buffer, that's ok,</span>
<a name="line-139"></a> <span class='hs-comment'>-- you might not want to bother completely filling the output buffer say if</span>
<a name="line-140"></a> <span class='hs-comment'>-- there's only a few free bytes left.</span>
<a name="line-141"></a>
<a name="line-142"></a> <span class='hs-varid'>outBuf</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getOutBuf</span>
<a name="line-143"></a> <span class='hs-varid'>unsafeLiftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>touchForeignPtr</span> <span class='hs-varid'>outBuf</span>
<a name="line-144"></a>
<a name="line-145"></a> <span class='hs-comment'>-- now set the available input buffer ptr and length</span>
<a name="line-146"></a> <span class='hs-varid'>setOutBuf</span> <span class='hs-varid'>outBuf'</span>
<a name="line-147"></a> <span class='hs-varid'>setOutFree</span> <span class='hs-varid'>length</span>
<a name="line-148"></a> <span class='hs-varid'>setOutNext</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafeForeignPtrToPtr</span> <span class='hs-varid'>outBuf'</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>offset</span><span class='hs-layout'>)</span>
<a name="line-149"></a>
<a name="line-150"></a> <span class='hs-varid'>setOutOffset</span> <span class='hs-varid'>offset</span>
<a name="line-151"></a> <span class='hs-varid'>setOutAvail</span> <span class='hs-num'>0</span>
<a name="line-152"></a>
<a name="line-153"></a>
<a name="line-154"></a><a name="popOutputBuffer"></a><span class='hs-comment'>-- get that part of the output buffer that is currently full</span>
<a name="line-155"></a><span class='hs-comment'>-- (might be 0, use outputBufferBytesAvailable to check)</span>
<a name="line-156"></a><span class='hs-comment'>-- this may leave some space remaining in the buffer, use</span>
<a name="line-157"></a><span class='hs-comment'>-- outputBufferSpaceRemaining to check.</span>
<a name="line-158"></a><span class='hs-definition'>popOutputBuffer</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-layout'>(</span><span class='hs-conid'>ForeignPtr</span> <span class='hs-conid'>Word8</span><span class='hs-layout'>,</span> <span class='hs-conid'>Int</span><span class='hs-layout'>,</span> <span class='hs-conid'>Int</span><span class='hs-layout'>)</span>
<a name="line-159"></a><span class='hs-definition'>popOutputBuffer</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-160"></a>
<a name="line-161"></a> <span class='hs-varid'>outBuf</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getOutBuf</span>
<a name="line-162"></a> <span class='hs-varid'>outOffset</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getOutOffset</span>
<a name="line-163"></a> <span class='hs-varid'>outAvail</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getOutAvail</span>
<a name="line-164"></a>
<a name="line-165"></a> <span class='hs-comment'>-- there really should be something to pop, otherwise it's silly</span>
<a name="line-166"></a> <span class='hs-varid'>assert</span> <span class='hs-layout'>(</span><span class='hs-varid'>outAvail</span> <span class='hs-varop'>></span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-167"></a>
<a name="line-168"></a> <span class='hs-varid'>setOutOffset</span> <span class='hs-layout'>(</span><span class='hs-varid'>outOffset</span> <span class='hs-varop'>+</span> <span class='hs-varid'>outAvail</span><span class='hs-layout'>)</span>
<a name="line-169"></a> <span class='hs-varid'>setOutAvail</span> <span class='hs-num'>0</span>
<a name="line-170"></a>
<a name="line-171"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>outBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outOffset</span><span class='hs-layout'>,</span> <span class='hs-varid'>outAvail</span><span class='hs-layout'>)</span>
<a name="line-172"></a>
<a name="line-173"></a>
<a name="line-174"></a><a name="outputBufferBytesAvailable"></a><span class='hs-comment'>-- this is the number of bytes available in the output buffer</span>
<a name="line-175"></a><span class='hs-definition'>outputBufferBytesAvailable</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Int</span>
<a name="line-176"></a><span class='hs-definition'>outputBufferBytesAvailable</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getOutAvail</span>
<a name="line-177"></a>
<a name="line-178"></a>
<a name="line-179"></a><a name="outputBufferSpaceRemaining"></a><span class='hs-comment'>-- you needen't get all the output immediately, you can continue until</span>
<a name="line-180"></a><span class='hs-comment'>-- there is no more output space available, this tells you that amount</span>
<a name="line-181"></a><span class='hs-definition'>outputBufferSpaceRemaining</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Int</span>
<a name="line-182"></a><span class='hs-definition'>outputBufferSpaceRemaining</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getOutFree</span>
<a name="line-183"></a>
<a name="line-184"></a>
<a name="line-185"></a><a name="outputBufferFull"></a><span class='hs-comment'>-- you only need to supply a new buffer when there is no more output buffer</span>
<a name="line-186"></a><span class='hs-comment'>-- space remaining</span>
<a name="line-187"></a><span class='hs-definition'>outputBufferFull</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Bool</span>
<a name="line-188"></a><span class='hs-definition'>outputBufferFull</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>liftM</span> <span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-varid'>outputBufferSpaceRemaining</span>
<a name="line-189"></a>
<a name="line-190"></a>
<a name="line-191"></a><a name="deflate"></a><span class='hs-comment'>-- you can only run this when the output buffer is not empty</span>
<a name="line-192"></a><span class='hs-comment'>-- you can run it when the input buffer is empty but it doesn't do anything</span>
<a name="line-193"></a><span class='hs-comment'>-- after running deflate either the output buffer will be full</span>
<a name="line-194"></a><span class='hs-comment'>-- or the input buffer will be empty (or both)</span>
<a name="line-195"></a><span class='hs-definition'>deflate</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Flush</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Status</span>
<a name="line-196"></a><span class='hs-definition'>deflate</span> <span class='hs-varid'>flush</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-197"></a>
<a name="line-198"></a> <span class='hs-varid'>outFree</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getOutFree</span>
<a name="line-199"></a>
<a name="line-200"></a> <span class='hs-comment'>-- deflate needs free space in the output buffer</span>
<a name="line-201"></a> <span class='hs-varid'>assert</span> <span class='hs-layout'>(</span><span class='hs-varid'>outFree</span> <span class='hs-varop'>></span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-202"></a>
<a name="line-203"></a> <span class='hs-varid'>result</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>deflate_</span> <span class='hs-varid'>flush</span>
<a name="line-204"></a> <span class='hs-varid'>outFree'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getOutFree</span>
<a name="line-205"></a>
<a name="line-206"></a> <span class='hs-comment'>-- number of bytes of extra output there is available as a result of</span>
<a name="line-207"></a> <span class='hs-comment'>-- the call to deflate:</span>
<a name="line-208"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>outExtra</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>outFree</span> <span class='hs-comment'>-</span> <span class='hs-varid'>outFree'</span>
<a name="line-209"></a>
<a name="line-210"></a> <span class='hs-varid'>outAvail</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getOutAvail</span>
<a name="line-211"></a> <span class='hs-varid'>setOutAvail</span> <span class='hs-layout'>(</span><span class='hs-varid'>outAvail</span> <span class='hs-varop'>+</span> <span class='hs-varid'>outExtra</span><span class='hs-layout'>)</span>
<a name="line-212"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>result</span>
<a name="line-213"></a>
<a name="line-214"></a>
<a name="line-215"></a><a name="inflate"></a><span class='hs-definition'>inflate</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Flush</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Status</span>
<a name="line-216"></a><span class='hs-definition'>inflate</span> <span class='hs-varid'>flush</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-217"></a>
<a name="line-218"></a> <span class='hs-varid'>outFree</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getOutFree</span>
<a name="line-219"></a>
<a name="line-220"></a> <span class='hs-comment'>-- inflate needs free space in the output buffer</span>
<a name="line-221"></a> <span class='hs-varid'>assert</span> <span class='hs-layout'>(</span><span class='hs-varid'>outFree</span> <span class='hs-varop'>></span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-222"></a>
<a name="line-223"></a> <span class='hs-varid'>result</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>inflate_</span> <span class='hs-varid'>flush</span>
<a name="line-224"></a> <span class='hs-varid'>outFree'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getOutFree</span>
<a name="line-225"></a>
<a name="line-226"></a> <span class='hs-comment'>-- number of bytes of extra output there is available as a result of</span>
<a name="line-227"></a> <span class='hs-comment'>-- the call to inflate:</span>
<a name="line-228"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>outExtra</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>outFree</span> <span class='hs-comment'>-</span> <span class='hs-varid'>outFree'</span>
<a name="line-229"></a>
<a name="line-230"></a> <span class='hs-varid'>outAvail</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getOutAvail</span>
<a name="line-231"></a> <span class='hs-varid'>setOutAvail</span> <span class='hs-layout'>(</span><span class='hs-varid'>outAvail</span> <span class='hs-varop'>+</span> <span class='hs-varid'>outExtra</span><span class='hs-layout'>)</span>
<a name="line-232"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>result</span>
<a name="line-233"></a>
<a name="line-234"></a>
<a name="line-235"></a><span class='hs-comment'>----------------------------</span>
<a name="line-236"></a><span class='hs-comment'>-- Stream monad</span>
<a name="line-237"></a><span class='hs-comment'>--</span>
<a name="line-238"></a>
<a name="line-239"></a><a name="Stream"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>Stream</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Z</span> <span class='hs-layout'>{</span>
<a name="line-240"></a> <span class='hs-varid'>unZ</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ForeignPtr</span> <span class='hs-conid'>StreamState</span>
<a name="line-241"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ForeignPtr</span> <span class='hs-conid'>Word8</span>
<a name="line-242"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ForeignPtr</span> <span class='hs-conid'>Word8</span>
<a name="line-243"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span>
<a name="line-244"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>ForeignPtr</span> <span class='hs-conid'>Word8</span>
<a name="line-245"></a> <span class='hs-layout'>,</span><span class='hs-conid'>ForeignPtr</span> <span class='hs-conid'>Word8</span>
<a name="line-246"></a> <span class='hs-layout'>,</span><span class='hs-conid'>Int</span><span class='hs-layout'>,</span> <span class='hs-conid'>Int</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-247"></a> <span class='hs-layout'>}</span>
<a name="line-248"></a>
<a name="line-249"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Monad</span> <span class='hs-conid'>Stream</span> <span class='hs-keyword'>where</span>
<a name="line-250"></a> <span class='hs-layout'>(</span><span class='hs-varop'>>>=</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>thenZ</span>
<a name="line-251"></a><span class='hs-comment'>-- m >>= f = (m `thenZ` \a -> consistencyCheck `thenZ_` returnZ a) `thenZ` f</span>
<a name="line-252"></a> <span class='hs-layout'>(</span><span class='hs-varop'>>></span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>thenZ_</span>
<a name="line-253"></a> <span class='hs-varid'>return</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>returnZ</span>
<a name="line-254"></a> <span class='hs-varid'>fail</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>finalise</span> <span class='hs-varop'>>></span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>failZ</span>
<a name="line-255"></a>
<a name="line-256"></a><a name="returnZ"></a><span class='hs-definition'>returnZ</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-varid'>a</span>
<a name="line-257"></a><span class='hs-definition'>returnZ</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Z</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-varid'>inBuf</span> <span class='hs-varid'>outBuf</span> <span class='hs-varid'>outOffset</span> <span class='hs-varid'>outLength</span> <span class='hs-keyglyph'>-></span>
<a name="line-258"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>inBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outOffset</span><span class='hs-layout'>,</span> <span class='hs-varid'>outLength</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-259"></a><span class='hs-comment'>{-# INLINE returnZ #-}</span>
<a name="line-260"></a>
<a name="line-261"></a><a name="thenZ"></a><span class='hs-definition'>thenZ</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-varid'>b</span>
<a name="line-262"></a><span class='hs-definition'>thenZ</span> <span class='hs-layout'>(</span><span class='hs-conid'>Z</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span>
<a name="line-263"></a> <span class='hs-conid'>Z</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>stream</span> <span class='hs-varid'>inBuf</span> <span class='hs-varid'>outBuf</span> <span class='hs-varid'>outOffset</span> <span class='hs-varid'>outLength</span> <span class='hs-keyglyph'>-></span>
<a name="line-264"></a> <span class='hs-varid'>m</span> <span class='hs-varid'>stream</span> <span class='hs-varid'>inBuf</span> <span class='hs-varid'>outBuf</span> <span class='hs-varid'>outOffset</span> <span class='hs-varid'>outLength</span> <span class='hs-varop'>>>=</span>
<a name="line-265"></a> <span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>inBuf'</span><span class='hs-layout'>,</span> <span class='hs-varid'>outBuf'</span><span class='hs-layout'>,</span> <span class='hs-varid'>outOffset'</span><span class='hs-layout'>,</span> <span class='hs-varid'>outLength'</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-266"></a> <span class='hs-varid'>unZ</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-varid'>stream</span> <span class='hs-varid'>inBuf'</span> <span class='hs-varid'>outBuf'</span> <span class='hs-varid'>outOffset'</span> <span class='hs-varid'>outLength'</span>
<a name="line-267"></a><span class='hs-comment'>{-# INLINE thenZ #-}</span>
<a name="line-268"></a>
<a name="line-269"></a><a name="thenZ_"></a><span class='hs-definition'>thenZ_</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-varid'>b</span>
<a name="line-270"></a><span class='hs-definition'>thenZ_</span> <span class='hs-layout'>(</span><span class='hs-conid'>Z</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span>
<a name="line-271"></a> <span class='hs-conid'>Z</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>stream</span> <span class='hs-varid'>inBuf</span> <span class='hs-varid'>outBuf</span> <span class='hs-varid'>outOffset</span> <span class='hs-varid'>outLength</span> <span class='hs-keyglyph'>-></span>
<a name="line-272"></a> <span class='hs-varid'>m</span> <span class='hs-varid'>stream</span> <span class='hs-varid'>inBuf</span> <span class='hs-varid'>outBuf</span> <span class='hs-varid'>outOffset</span> <span class='hs-varid'>outLength</span> <span class='hs-varop'>>>=</span>
<a name="line-273"></a> <span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>inBuf'</span><span class='hs-layout'>,</span> <span class='hs-varid'>outBuf'</span><span class='hs-layout'>,</span> <span class='hs-varid'>outOffset'</span><span class='hs-layout'>,</span> <span class='hs-varid'>outLength'</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-274"></a> <span class='hs-varid'>unZ</span> <span class='hs-varid'>f</span> <span class='hs-varid'>stream</span> <span class='hs-varid'>inBuf'</span> <span class='hs-varid'>outBuf'</span> <span class='hs-varid'>outOffset'</span> <span class='hs-varid'>outLength'</span>
<a name="line-275"></a><span class='hs-comment'>{-# INLINE thenZ_ #-}</span>
<a name="line-276"></a>
<a name="line-277"></a><a name="failZ"></a><span class='hs-definition'>failZ</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-varid'>a</span>
<a name="line-278"></a><span class='hs-definition'>failZ</span> <span class='hs-varid'>msg</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Z</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>fail</span> <span class='hs-layout'>(</span><span class='hs-str'>"Codec.Compression.Zlib: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>msg</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-279"></a>
<a name="line-280"></a><a name="run"></a><span class='hs-comment'>{-# NOINLINE run #-}</span>
<a name="line-281"></a><span class='hs-definition'>run</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span>
<a name="line-282"></a><span class='hs-definition'>run</span> <span class='hs-layout'>(</span><span class='hs-conid'>Z</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafePerformIO</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-283"></a> <span class='hs-varid'>ptr</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mallocBytes</span> <span class='hs-layout'>(</span><span class='hs-num'>56</span><span class='hs-layout'>)</span>
<a name="line-284"></a><span class='hs-comment'>{-# LINE 284 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-285"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pokeByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>24</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptr</span> <span class='hs-varid'>nullPtr</span>
<a name="line-286"></a><span class='hs-comment'>{-# LINE 285 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-287"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pokeByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>32</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptr</span> <span class='hs-varid'>nullPtr</span>
<a name="line-288"></a><span class='hs-comment'>{-# LINE 286 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-289"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pokeByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>36</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptr</span> <span class='hs-varid'>nullPtr</span>
<a name="line-290"></a><span class='hs-comment'>{-# LINE 287 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-291"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pokeByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>40</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptr</span> <span class='hs-varid'>nullPtr</span>
<a name="line-292"></a><span class='hs-comment'>{-# LINE 288 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-293"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pokeByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptr</span> <span class='hs-varid'>nullPtr</span>
<a name="line-294"></a><span class='hs-comment'>{-# LINE 289 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-295"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pokeByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>12</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptr</span> <span class='hs-varid'>nullPtr</span>
<a name="line-296"></a><span class='hs-comment'>{-# LINE 290 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-297"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pokeByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>4</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptr</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CUInt</span><span class='hs-layout'>)</span>
<a name="line-298"></a><span class='hs-comment'>{-# LINE 291 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-299"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pokeByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>16</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptr</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CUInt</span><span class='hs-layout'>)</span>
<a name="line-300"></a><span class='hs-comment'>{-# LINE 292 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-301"></a> <span class='hs-varid'>stream</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newForeignPtr_</span> <span class='hs-varid'>ptr</span>
<a name="line-302"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>m</span> <span class='hs-varid'>stream</span> <span class='hs-varid'>nullForeignPtr</span> <span class='hs-varid'>nullForeignPtr</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span>
<a name="line-303"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>a</span>
<a name="line-304"></a>
<a name="line-305"></a><a name="unsafeLiftIO"></a><span class='hs-comment'>-- This is marked as unsafe because run uses unsafePerformIO so anything</span>
<a name="line-306"></a><span class='hs-comment'>-- lifted here will end up being unsafePerformIO'd.</span>
<a name="line-307"></a><span class='hs-definition'>unsafeLiftIO</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-varid'>a</span>
<a name="line-308"></a><span class='hs-definition'>unsafeLiftIO</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Z</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-sel'>_stream</span> <span class='hs-varid'>inBuf</span> <span class='hs-varid'>outBuf</span> <span class='hs-varid'>outOffset</span> <span class='hs-varid'>outLength</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-309"></a> <span class='hs-varid'>a</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>m</span>
<a name="line-310"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>inBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outOffset</span><span class='hs-layout'>,</span> <span class='hs-varid'>outLength</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-311"></a>
<a name="line-312"></a><a name="unsafeInterleave"></a><span class='hs-comment'>-- It's unsafe because we discard the values here, so if you mutate anything</span>
<a name="line-313"></a><span class='hs-comment'>-- between running this and forcing the result then you'll get an inconsistent</span>
<a name="line-314"></a><span class='hs-comment'>-- stream state.</span>
<a name="line-315"></a><span class='hs-definition'>unsafeInterleave</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-varid'>a</span>
<a name="line-316"></a><span class='hs-definition'>unsafeInterleave</span> <span class='hs-layout'>(</span><span class='hs-conid'>Z</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Z</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>stream</span> <span class='hs-varid'>inBuf</span> <span class='hs-varid'>outBuf</span> <span class='hs-varid'>outOffset</span> <span class='hs-varid'>outLength</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-317"></a> <span class='hs-varid'>res</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>unsafeInterleaveIO</span> <span class='hs-layout'>(</span><span class='hs-varid'>m</span> <span class='hs-varid'>stream</span> <span class='hs-varid'>inBuf</span> <span class='hs-varid'>outBuf</span> <span class='hs-varid'>outOffset</span> <span class='hs-varid'>outLength</span><span class='hs-layout'>)</span>
<a name="line-318"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>select</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-319"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>inBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outOffset</span><span class='hs-layout'>,</span> <span class='hs-varid'>outLength</span><span class='hs-layout'>,</span> <span class='hs-varid'>select</span> <span class='hs-varid'>res</span><span class='hs-layout'>)</span>
<a name="line-320"></a>
<a name="line-321"></a><a name="getStreamState"></a><span class='hs-definition'>getStreamState</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-layout'>(</span><span class='hs-conid'>ForeignPtr</span> <span class='hs-conid'>StreamState</span><span class='hs-layout'>)</span>
<a name="line-322"></a><span class='hs-definition'>getStreamState</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Z</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>stream</span> <span class='hs-varid'>inBuf</span> <span class='hs-varid'>outBuf</span> <span class='hs-varid'>outOffset</span> <span class='hs-varid'>outLength</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-323"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>inBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outOffset</span><span class='hs-layout'>,</span> <span class='hs-varid'>outLength</span><span class='hs-layout'>,</span> <span class='hs-varid'>stream</span><span class='hs-layout'>)</span>
<a name="line-324"></a>
<a name="line-325"></a><a name="getInBuf"></a><span class='hs-definition'>getInBuf</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-layout'>(</span><span class='hs-conid'>ForeignPtr</span> <span class='hs-conid'>Word8</span><span class='hs-layout'>)</span>
<a name="line-326"></a><span class='hs-definition'>getInBuf</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Z</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-sel'>_stream</span> <span class='hs-varid'>inBuf</span> <span class='hs-varid'>outBuf</span> <span class='hs-varid'>outOffset</span> <span class='hs-varid'>outLength</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-327"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>inBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outOffset</span><span class='hs-layout'>,</span> <span class='hs-varid'>outLength</span><span class='hs-layout'>,</span> <span class='hs-varid'>inBuf</span><span class='hs-layout'>)</span>
<a name="line-328"></a>
<a name="line-329"></a><a name="getOutBuf"></a><span class='hs-definition'>getOutBuf</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-layout'>(</span><span class='hs-conid'>ForeignPtr</span> <span class='hs-conid'>Word8</span><span class='hs-layout'>)</span>
<a name="line-330"></a><span class='hs-definition'>getOutBuf</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Z</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-sel'>_stream</span> <span class='hs-varid'>inBuf</span> <span class='hs-varid'>outBuf</span> <span class='hs-varid'>outOffset</span> <span class='hs-varid'>outLength</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-331"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>inBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outOffset</span><span class='hs-layout'>,</span> <span class='hs-varid'>outLength</span><span class='hs-layout'>,</span> <span class='hs-varid'>outBuf</span><span class='hs-layout'>)</span>
<a name="line-332"></a>
<a name="line-333"></a><a name="getOutOffset"></a><span class='hs-definition'>getOutOffset</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Int</span>
<a name="line-334"></a><span class='hs-definition'>getOutOffset</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Z</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-sel'>_stream</span> <span class='hs-varid'>inBuf</span> <span class='hs-varid'>outBuf</span> <span class='hs-varid'>outOffset</span> <span class='hs-varid'>outLength</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-335"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>inBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outOffset</span><span class='hs-layout'>,</span> <span class='hs-varid'>outLength</span><span class='hs-layout'>,</span> <span class='hs-varid'>outOffset</span><span class='hs-layout'>)</span>
<a name="line-336"></a>
<a name="line-337"></a><a name="getOutAvail"></a><span class='hs-definition'>getOutAvail</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Int</span>
<a name="line-338"></a><span class='hs-definition'>getOutAvail</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Z</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-sel'>_stream</span> <span class='hs-varid'>inBuf</span> <span class='hs-varid'>outBuf</span> <span class='hs-varid'>outOffset</span> <span class='hs-varid'>outLength</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-339"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>inBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outOffset</span><span class='hs-layout'>,</span> <span class='hs-varid'>outLength</span><span class='hs-layout'>,</span> <span class='hs-varid'>outLength</span><span class='hs-layout'>)</span>
<a name="line-340"></a>
<a name="line-341"></a><a name="setInBuf"></a><span class='hs-definition'>setInBuf</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ForeignPtr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>()</span>
<a name="line-342"></a><span class='hs-definition'>setInBuf</span> <span class='hs-varid'>inBuf</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Z</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-sel'>_stream</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>outBuf</span> <span class='hs-varid'>outOffset</span> <span class='hs-varid'>outLength</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-343"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>inBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outOffset</span><span class='hs-layout'>,</span> <span class='hs-varid'>outLength</span><span class='hs-layout'>,</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span>
<a name="line-344"></a>
<a name="line-345"></a><a name="setOutBuf"></a><span class='hs-definition'>setOutBuf</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ForeignPtr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>()</span>
<a name="line-346"></a><span class='hs-definition'>setOutBuf</span> <span class='hs-varid'>outBuf</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Z</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-sel'>_stream</span> <span class='hs-varid'>inBuf</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>outOffset</span> <span class='hs-varid'>outLength</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-347"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>inBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outOffset</span><span class='hs-layout'>,</span> <span class='hs-varid'>outLength</span><span class='hs-layout'>,</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span>
<a name="line-348"></a>
<a name="line-349"></a><a name="setOutOffset"></a><span class='hs-definition'>setOutOffset</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>()</span>
<a name="line-350"></a><span class='hs-definition'>setOutOffset</span> <span class='hs-varid'>outOffset</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Z</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-sel'>_stream</span> <span class='hs-varid'>inBuf</span> <span class='hs-varid'>outBuf</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>outLength</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-351"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>inBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outOffset</span><span class='hs-layout'>,</span> <span class='hs-varid'>outLength</span><span class='hs-layout'>,</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span>
<a name="line-352"></a>
<a name="line-353"></a><a name="setOutAvail"></a><span class='hs-definition'>setOutAvail</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>()</span>
<a name="line-354"></a><span class='hs-definition'>setOutAvail</span> <span class='hs-varid'>outLength</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Z</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-sel'>_stream</span> <span class='hs-varid'>inBuf</span> <span class='hs-varid'>outBuf</span> <span class='hs-varid'>outOffset</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-355"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>inBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outBuf</span><span class='hs-layout'>,</span> <span class='hs-varid'>outOffset</span><span class='hs-layout'>,</span> <span class='hs-varid'>outLength</span><span class='hs-layout'>,</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span>
<a name="line-356"></a>
<a name="line-357"></a><span class='hs-comment'>----------------------------</span>
<a name="line-358"></a><span class='hs-comment'>-- Debug stuff</span>
<a name="line-359"></a><span class='hs-comment'>--</span>
<a name="line-360"></a>
<a name="line-361"></a>
<a name="line-362"></a><span class='hs-comment'>{-# LINE 391 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-363"></a>
<a name="line-364"></a>
<a name="line-365"></a><span class='hs-comment'>----------------------------</span>
<a name="line-366"></a><span class='hs-comment'>-- zlib wrapper layer</span>
<a name="line-367"></a><span class='hs-comment'>--</span>
<a name="line-368"></a>
<a name="line-369"></a><a name="Status"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Status</span> <span class='hs-keyglyph'>=</span>
<a name="line-370"></a> <span class='hs-conid'>Ok</span>
<a name="line-371"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>StreamEnd</span>
<a name="line-372"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Error</span> <span class='hs-conid'>ErrorCode</span> <span class='hs-conid'>String</span>
<a name="line-373"></a>
<a name="line-374"></a><a name="ErrorCode"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>ErrorCode</span> <span class='hs-keyglyph'>=</span>
<a name="line-375"></a> <span class='hs-conid'>NeedDict</span>
<a name="line-376"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>FileError</span>
<a name="line-377"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>StreamError</span>
<a name="line-378"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>DataError</span>
<a name="line-379"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>MemoryError</span>
<a name="line-380"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BufferError</span> <span class='hs-comment'>-- ^ No progress was possible or there was not enough room in</span>
<a name="line-381"></a> <span class='hs-comment'>-- the output buffer when 'Finish' is used. Note that</span>
<a name="line-382"></a> <span class='hs-comment'>-- 'BuferError' is not fatal, and 'inflate' can be called</span>
<a name="line-383"></a> <span class='hs-comment'>-- again with more input and more output space to continue.</span>
<a name="line-384"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>VersionError</span>
<a name="line-385"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Unexpected</span>
<a name="line-386"></a>
<a name="line-387"></a><a name="toStatus"></a><span class='hs-definition'>toStatus</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Status</span>
<a name="line-388"></a><span class='hs-definition'>toStatus</span> <span class='hs-varid'>errno</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>errno</span> <span class='hs-keyword'>of</span>
<a name="line-389"></a> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>Ok</span>
<a name="line-390"></a><span class='hs-comment'>{-# LINE 418 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-391"></a> <span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>StreamEnd</span>
<a name="line-392"></a><span class='hs-comment'>{-# LINE 419 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-393"></a> <span class='hs-layout'>(</span><span class='hs-num'>2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>err</span> <span class='hs-conid'>NeedDict</span> <span class='hs-str'>"custom dictionary needed"</span>
<a name="line-394"></a><span class='hs-comment'>{-# LINE 420 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-395"></a> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>5</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>err</span> <span class='hs-conid'>BufferError</span> <span class='hs-str'>"buffer error"</span>
<a name="line-396"></a><span class='hs-comment'>{-# LINE 421 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-397"></a> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>err</span> <span class='hs-conid'>FileError</span> <span class='hs-str'>"file error"</span>
<a name="line-398"></a><span class='hs-comment'>{-# LINE 422 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-399"></a> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>err</span> <span class='hs-conid'>StreamError</span> <span class='hs-str'>"stream error"</span>
<a name="line-400"></a><span class='hs-comment'>{-# LINE 423 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-401"></a> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>3</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>err</span> <span class='hs-conid'>DataError</span> <span class='hs-str'>"data error"</span>
<a name="line-402"></a><span class='hs-comment'>{-# LINE 424 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-403"></a> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>4</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>err</span> <span class='hs-conid'>MemoryError</span> <span class='hs-str'>"insufficient memory"</span>
<a name="line-404"></a><span class='hs-comment'>{-# LINE 425 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-405"></a> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>6</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>err</span> <span class='hs-conid'>VersionError</span> <span class='hs-str'>"incompatible zlib version"</span>
<a name="line-406"></a><span class='hs-comment'>{-# LINE 426 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-407"></a> <span class='hs-varid'>other</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Error</span> <span class='hs-conid'>Unexpected</span>
<a name="line-408"></a> <span class='hs-layout'>(</span><span class='hs-str'>"unexpected zlib status: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>other</span><span class='hs-layout'>)</span>
<a name="line-409"></a> <span class='hs-keyword'>where</span>
<a name="line-410"></a> <span class='hs-varid'>err</span> <span class='hs-varid'>errCode</span> <span class='hs-varid'>altMsg</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>liftM</span> <span class='hs-layout'>(</span><span class='hs-conid'>Error</span> <span class='hs-varid'>errCode</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-411"></a> <span class='hs-varid'>msgPtr</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>withStreamPtr</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>24</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-412"></a><span class='hs-comment'>{-# LINE 431 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-413"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>msgPtr</span> <span class='hs-varop'>/=</span> <span class='hs-varid'>nullPtr</span>
<a name="line-414"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>unsafeLiftIO</span> <span class='hs-layout'>(</span><span class='hs-varid'>peekCAString</span> <span class='hs-varid'>msgPtr</span><span class='hs-layout'>)</span>
<a name="line-415"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-varid'>altMsg</span>
<a name="line-416"></a>
<a name="line-417"></a><a name="failIfError"></a><span class='hs-definition'>failIfError</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>()</span>
<a name="line-418"></a><span class='hs-definition'>failIfError</span> <span class='hs-varid'>errno</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toStatus</span> <span class='hs-varid'>errno</span> <span class='hs-varop'>>>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>status</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>status</span> <span class='hs-keyword'>of</span>
<a name="line-419"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Error</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>msg</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>fail</span> <span class='hs-varid'>msg</span>
<a name="line-420"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-421"></a>
<a name="line-422"></a>
<a name="line-423"></a><a name="Flush"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Flush</span> <span class='hs-keyglyph'>=</span>
<a name="line-424"></a> <span class='hs-conid'>NoFlush</span>
<a name="line-425"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>SyncFlush</span>
<a name="line-426"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>FullFlush</span>
<a name="line-427"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Finish</span>
<a name="line-428"></a><span class='hs-comment'>-- | Block -- only available in zlib 1.2 and later, uncomment if you need it.</span>
<a name="line-429"></a>
<a name="line-430"></a><a name="fromFlush"></a><span class='hs-definition'>fromFlush</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Flush</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span>
<a name="line-431"></a><span class='hs-definition'>fromFlush</span> <span class='hs-conid'>NoFlush</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-432"></a><span class='hs-comment'>{-# LINE 450 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-433"></a><span class='hs-definition'>fromFlush</span> <span class='hs-conid'>SyncFlush</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>2</span>
<a name="line-434"></a><span class='hs-comment'>{-# LINE 451 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-435"></a><span class='hs-definition'>fromFlush</span> <span class='hs-conid'>FullFlush</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>3</span>
<a name="line-436"></a><span class='hs-comment'>{-# LINE 452 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-437"></a><span class='hs-definition'>fromFlush</span> <span class='hs-conid'>Finish</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>4</span>
<a name="line-438"></a><span class='hs-comment'>{-# LINE 453 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-439"></a><span class='hs-comment'>-- fromFlush Block = #{const Z_BLOCK}</span>
<a name="line-440"></a>
<a name="line-441"></a>
<a name="line-442"></a><a name="Format"></a><span class='hs-comment'>-- | The format used for compression or decompression. There are three</span>
<a name="line-443"></a><a name="Format"></a><span class='hs-comment'>-- variations.</span>
<a name="line-444"></a><a name="Format"></a><span class='hs-comment'>--</span>
<a name="line-445"></a><a name="Format"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Format</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>GZip</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Zlib</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Raw</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>GZipOrZlib</span>
<a name="line-446"></a> <span class='hs-keyword'>deriving</span> <span class='hs-conid'>Eq</span>
<a name="line-447"></a>
<a name="line-448"></a><span class='hs-comment'>{-# DEPRECATED GZip "Use gzipFormat. Format constructors will be hidden in version 0.7" #-}</span>
<a name="line-449"></a><span class='hs-comment'>{-# DEPRECATED Zlib "Use zlibFormat. Format constructors will be hidden in version 0.7" #-}</span>
<a name="line-450"></a><span class='hs-comment'>{-# DEPRECATED Raw "Use rawFormat. Format constructors will be hidden in version 0.7" #-}</span>
<a name="line-451"></a><span class='hs-comment'>{-# DEPRECATED GZipOrZlib "Use gzipOrZlibFormat. Format constructors will be hidden in version 0.7" #-}</span>
<a name="line-452"></a>
<a name="line-453"></a><a name="gzipFormat"></a><span class='hs-comment'>-- | The gzip format uses a header with a checksum and some optional meta-data</span>
<a name="line-454"></a><span class='hs-comment'>-- about the compressed file. It is intended primarily for compressing</span>
<a name="line-455"></a><span class='hs-comment'>-- individual files but is also sometimes used for network protocols such as</span>
<a name="line-456"></a><span class='hs-comment'>-- HTTP. The format is described in detail in RFC #1952</span>
<a name="line-457"></a><span class='hs-comment'>-- <<a href="http://www.ietf.org/rfc/rfc1952.txt">http://www.ietf.org/rfc/rfc1952.txt</a>></span>
<a name="line-458"></a><span class='hs-comment'>--</span>
<a name="line-459"></a><span class='hs-definition'>gzipFormat</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Format</span>
<a name="line-460"></a><span class='hs-definition'>gzipFormat</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>GZip</span>
<a name="line-461"></a>
<a name="line-462"></a><a name="zlibFormat"></a><span class='hs-comment'>-- | The zlib format uses a minimal header with a checksum but no other</span>
<a name="line-463"></a><span class='hs-comment'>-- meta-data. It is especially designed for use in network protocols. The</span>
<a name="line-464"></a><span class='hs-comment'>-- format is described in detail in RFC #1950</span>
<a name="line-465"></a><span class='hs-comment'>-- <<a href="http://www.ietf.org/rfc/rfc1950.txt">http://www.ietf.org/rfc/rfc1950.txt</a>></span>
<a name="line-466"></a><span class='hs-comment'>--</span>
<a name="line-467"></a><span class='hs-definition'>zlibFormat</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Format</span>
<a name="line-468"></a><span class='hs-definition'>zlibFormat</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Zlib</span>
<a name="line-469"></a>
<a name="line-470"></a><a name="rawFormat"></a><span class='hs-comment'>-- | The \'raw\' format is just the compressed data stream without any</span>
<a name="line-471"></a><span class='hs-comment'>-- additional header, meta-data or data-integrity checksum. The format is</span>
<a name="line-472"></a><span class='hs-comment'>-- described in detail in RFC #1951 <<a href="http://www.ietf.org/rfc/rfc1951.txt">http://www.ietf.org/rfc/rfc1951.txt</a>></span>
<a name="line-473"></a><span class='hs-comment'>--</span>
<a name="line-474"></a><span class='hs-definition'>rawFormat</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Format</span>
<a name="line-475"></a><span class='hs-definition'>rawFormat</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Raw</span>
<a name="line-476"></a>
<a name="line-477"></a><a name="gzipOrZlibFormat"></a><span class='hs-comment'>-- | This is not a format as such. It enabled zlib or gzip decoding with</span>
<a name="line-478"></a><span class='hs-comment'>-- automatic header detection. This only makes sense for decompression.</span>
<a name="line-479"></a><span class='hs-comment'>--</span>
<a name="line-480"></a><span class='hs-definition'>gzipOrZlibFormat</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Format</span>
<a name="line-481"></a><span class='hs-definition'>gzipOrZlibFormat</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>GZipOrZlib</span>
<a name="line-482"></a>
<a name="line-483"></a>
<a name="line-484"></a><a name="Method"></a><span class='hs-comment'>-- | The compression method</span>
<a name="line-485"></a><a name="Method"></a><span class='hs-comment'>--</span>
<a name="line-486"></a><a name="Method"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Method</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Deflated</span>
<a name="line-487"></a>
<a name="line-488"></a><span class='hs-comment'>{-# DEPRECATED Deflated "Use deflateMethod. Method constructors will be hidden in version 0.7" #-}</span>
<a name="line-489"></a>
<a name="line-490"></a><a name="deflateMethod"></a><span class='hs-comment'>-- | \'Deflate\' is the only method supported in this version of zlib.</span>
<a name="line-491"></a><span class='hs-comment'>-- Indeed it is likely to be the only method that ever will be supported.</span>
<a name="line-492"></a><span class='hs-comment'>--</span>
<a name="line-493"></a><span class='hs-definition'>deflateMethod</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Method</span>
<a name="line-494"></a><span class='hs-definition'>deflateMethod</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Deflated</span>
<a name="line-495"></a>
<a name="line-496"></a><a name="fromMethod"></a><span class='hs-definition'>fromMethod</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Method</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span>
<a name="line-497"></a><span class='hs-definition'>fromMethod</span> <span class='hs-conid'>Deflated</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>8</span>
<a name="line-498"></a><span class='hs-comment'>{-# LINE 512 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-499"></a>
<a name="line-500"></a>
<a name="line-501"></a><a name="CompressionLevel"></a><span class='hs-comment'>-- | The compression level parameter controls the amount of compression. This</span>
<a name="line-502"></a><a name="CompressionLevel"></a><span class='hs-comment'>-- is a trade-off between the amount of compression and the time required to do</span>
<a name="line-503"></a><a name="CompressionLevel"></a><span class='hs-comment'>-- the compression.</span>
<a name="line-504"></a><a name="CompressionLevel"></a><span class='hs-comment'>--</span>
<a name="line-505"></a><a name="CompressionLevel"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>CompressionLevel</span> <span class='hs-keyglyph'>=</span>
<a name="line-506"></a> <span class='hs-conid'>DefaultCompression</span>
<a name="line-507"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>NoCompression</span>
<a name="line-508"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BestSpeed</span>
<a name="line-509"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BestCompression</span>
<a name="line-510"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>CompressionLevel</span> <span class='hs-conid'>Int</span>
<a name="line-511"></a>
<a name="line-512"></a><span class='hs-comment'>{-# DEPRECATED DefaultCompression "Use defaultCompression. CompressionLevel constructors will be hidden in version 0.7" #-}</span>
<a name="line-513"></a><span class='hs-comment'>{-# DEPRECATED NoCompression "Use noCompression. CompressionLevel constructors will be hidden in version 0.7" #-}</span>
<a name="line-514"></a><span class='hs-comment'>{-# DEPRECATED BestSpeed "Use bestSpeed. CompressionLevel constructors will be hidden in version 0.7" #-}</span>
<a name="line-515"></a><span class='hs-comment'>{-# DEPRECATED BestCompression "Use bestCompression. CompressionLevel constructors will be hidden in version 0.7" #-}</span>
<a name="line-516"></a><span class='hs-comment'>--FIXME: cannot deprecate constructor named the same as the type</span>
<a name="line-517"></a><span class='hs-comment'>{- DEPRECATED CompressionLevel "Use compressionLevel. CompressionLevel constructors will be hidden in version 0.7" -}</span>
<a name="line-518"></a>
<a name="line-519"></a><a name="defaultCompression"></a><span class='hs-comment'>-- | The default compression level is 6 (that is, biased towards higher</span>
<a name="line-520"></a><span class='hs-comment'>-- compression at expense of speed).</span>
<a name="line-521"></a><span class='hs-definition'>defaultCompression</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CompressionLevel</span>
<a name="line-522"></a><span class='hs-definition'>defaultCompression</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DefaultCompression</span>
<a name="line-523"></a>
<a name="line-524"></a><a name="noCompression"></a><span class='hs-comment'>-- | No compression, just a block copy.</span>
<a name="line-525"></a><span class='hs-definition'>noCompression</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CompressionLevel</span>
<a name="line-526"></a><span class='hs-definition'>noCompression</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>CompressionLevel</span> <span class='hs-num'>0</span>
<a name="line-527"></a>
<a name="line-528"></a><a name="bestSpeed"></a><span class='hs-comment'>-- | The fastest compression method (less compression)</span>
<a name="line-529"></a><span class='hs-definition'>bestSpeed</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CompressionLevel</span>
<a name="line-530"></a><span class='hs-definition'>bestSpeed</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>CompressionLevel</span> <span class='hs-num'>1</span>
<a name="line-531"></a>
<a name="line-532"></a><a name="bestCompression"></a><span class='hs-comment'>-- | The slowest compression method (best compression).</span>
<a name="line-533"></a><span class='hs-definition'>bestCompression</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CompressionLevel</span>
<a name="line-534"></a><span class='hs-definition'>bestCompression</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>CompressionLevel</span> <span class='hs-num'>9</span>
<a name="line-535"></a>
<a name="line-536"></a><a name="compressionLevel"></a><span class='hs-comment'>-- | A specific compression level between 0 and 9.</span>
<a name="line-537"></a><span class='hs-definition'>compressionLevel</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CompressionLevel</span>
<a name="line-538"></a><span class='hs-definition'>compressionLevel</span> <span class='hs-varid'>n</span>
<a name="line-539"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>n</span> <span class='hs-varop'>>=</span> <span class='hs-num'>0</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>n</span> <span class='hs-varop'><=</span> <span class='hs-num'>9</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>CompressionLevel</span> <span class='hs-varid'>n</span>
<a name="line-540"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"CompressionLevel must be in the range 0..9"</span>
<a name="line-541"></a>
<a name="line-542"></a><a name="fromCompressionLevel"></a><span class='hs-definition'>fromCompressionLevel</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CompressionLevel</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span>
<a name="line-543"></a><span class='hs-definition'>fromCompressionLevel</span> <span class='hs-conid'>DefaultCompression</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>-</span><span class='hs-num'>1</span>
<a name="line-544"></a><span class='hs-definition'>fromCompressionLevel</span> <span class='hs-conid'>NoCompression</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-545"></a><span class='hs-definition'>fromCompressionLevel</span> <span class='hs-conid'>BestSpeed</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>1</span>
<a name="line-546"></a><span class='hs-definition'>fromCompressionLevel</span> <span class='hs-conid'>BestCompression</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>9</span>
<a name="line-547"></a><span class='hs-definition'>fromCompressionLevel</span> <span class='hs-layout'>(</span><span class='hs-conid'>CompressionLevel</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span>
<a name="line-548"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>n</span> <span class='hs-varop'>>=</span> <span class='hs-num'>0</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>n</span> <span class='hs-varop'><=</span> <span class='hs-num'>9</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n</span>
<a name="line-549"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"CompressLevel must be in the range 1..9"</span>
<a name="line-550"></a>
<a name="line-551"></a>
<a name="line-552"></a><a name="WindowBits"></a><span class='hs-comment'>-- | This specifies the size of the compression window. Larger values of this</span>
<a name="line-553"></a><a name="WindowBits"></a><span class='hs-comment'>-- parameter result in better compression at the expense of higher memory</span>
<a name="line-554"></a><a name="WindowBits"></a><span class='hs-comment'>-- usage.</span>
<a name="line-555"></a><a name="WindowBits"></a><span class='hs-comment'>--</span>
<a name="line-556"></a><a name="WindowBits"></a><span class='hs-comment'>-- The compression window size is the value of the the window bits raised to</span>
<a name="line-557"></a><a name="WindowBits"></a><span class='hs-comment'>-- the power 2. The window bits must be in the range @8..15@ which corresponds</span>
<a name="line-558"></a><a name="WindowBits"></a><span class='hs-comment'>-- to compression window sizes of 256b to 32Kb. The default is 15 which is also</span>
<a name="line-559"></a><a name="WindowBits"></a><span class='hs-comment'>-- the maximum size.</span>
<a name="line-560"></a><a name="WindowBits"></a><span class='hs-comment'>--</span>
<a name="line-561"></a><a name="WindowBits"></a><span class='hs-comment'>-- The total amount of memory used depends on the window bits and the</span>
<a name="line-562"></a><a name="WindowBits"></a><span class='hs-comment'>-- 'MemoryLevel'. See the 'MemoryLevel' for the details.</span>
<a name="line-563"></a><a name="WindowBits"></a><span class='hs-comment'>--</span>
<a name="line-564"></a><a name="WindowBits"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>WindowBits</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>WindowBits</span> <span class='hs-conid'>Int</span>
<a name="line-565"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>DefaultWindowBits</span> <span class='hs-comment'>-- This constructor must be last to make</span>
<a name="line-566"></a> <span class='hs-comment'>-- the Ord instance work. The Ord instance</span>
<a name="line-567"></a> <span class='hs-comment'>-- is defined with and used by the tests.</span>
<a name="line-568"></a> <span class='hs-comment'>-- It makse sense because the default value</span>
<a name="line-569"></a> <span class='hs-comment'>-- is is also the max value at 15.</span>
<a name="line-570"></a>
<a name="line-571"></a><span class='hs-comment'>{-# DEPRECATED DefaultWindowBits "Use defaultWindowBits. WindowBits constructors will be hidden in version 0.7" #-}</span>
<a name="line-572"></a><span class='hs-comment'>--FIXME: cannot deprecate constructor named the same as the type</span>
<a name="line-573"></a><span class='hs-comment'>{- DEPRECATED WindowBits "Use windowBits. WindowBits constructors will be hidden in version 0.7" -}</span>
<a name="line-574"></a>
<a name="line-575"></a><a name="defaultWindowBits"></a><span class='hs-comment'>-- | The default 'WindowBits' is 15 which is also the maximum size.</span>
<a name="line-576"></a><span class='hs-comment'>--</span>
<a name="line-577"></a><span class='hs-definition'>defaultWindowBits</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>WindowBits</span>
<a name="line-578"></a><span class='hs-definition'>defaultWindowBits</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>WindowBits</span> <span class='hs-num'>15</span>
<a name="line-579"></a>
<a name="line-580"></a><a name="windowBits"></a><span class='hs-comment'>-- | A specific compression window size, specified in bits in the range @8..15@</span>
<a name="line-581"></a><span class='hs-comment'>--</span>
<a name="line-582"></a><span class='hs-definition'>windowBits</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>WindowBits</span>
<a name="line-583"></a><span class='hs-definition'>windowBits</span> <span class='hs-varid'>n</span>
<a name="line-584"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>n</span> <span class='hs-varop'>>=</span> <span class='hs-num'>8</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>n</span> <span class='hs-varop'><=</span> <span class='hs-num'>15</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>WindowBits</span> <span class='hs-varid'>n</span>
<a name="line-585"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"WindowBits must be in the range 8..15"</span>
<a name="line-586"></a>
<a name="line-587"></a><a name="fromWindowBits"></a><span class='hs-definition'>fromWindowBits</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Format</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>WindowBits</span><span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span>
<a name="line-588"></a><span class='hs-definition'>fromWindowBits</span> <span class='hs-varid'>format</span> <span class='hs-varid'>bits</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>formatModifier</span> <span class='hs-varid'>format</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>checkWindowBits</span> <span class='hs-varid'>bits</span><span class='hs-layout'>)</span>
<a name="line-589"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>checkWindowBits</span> <span class='hs-conid'>DefaultWindowBits</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>15</span>
<a name="line-590"></a> <span class='hs-varid'>checkWindowBits</span> <span class='hs-layout'>(</span><span class='hs-conid'>WindowBits</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span>
<a name="line-591"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>n</span> <span class='hs-varop'>>=</span> <span class='hs-num'>8</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>n</span> <span class='hs-varop'><=</span> <span class='hs-num'>15</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n</span>
<a name="line-592"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"WindowBits must be in the range 8..15"</span>
<a name="line-593"></a> <span class='hs-varid'>formatModifier</span> <span class='hs-conid'>Zlib</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>id</span>
<a name="line-594"></a> <span class='hs-varid'>formatModifier</span> <span class='hs-conid'>GZip</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varop'>+</span><span class='hs-num'>16</span><span class='hs-layout'>)</span>
<a name="line-595"></a> <span class='hs-varid'>formatModifier</span> <span class='hs-conid'>GZipOrZlib</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varop'>+</span><span class='hs-num'>32</span><span class='hs-layout'>)</span>
<a name="line-596"></a> <span class='hs-varid'>formatModifier</span> <span class='hs-conid'>Raw</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>negate</span>
<a name="line-597"></a>
<a name="line-598"></a>
<a name="line-599"></a><a name="MemoryLevel"></a><span class='hs-comment'>-- | The 'MemoryLevel' parameter specifies how much memory should be allocated</span>
<a name="line-600"></a><a name="MemoryLevel"></a><span class='hs-comment'>-- for the internal compression state. It is a tradoff between memory usage,</span>
<a name="line-601"></a><a name="MemoryLevel"></a><span class='hs-comment'>-- compression ratio and compression speed. Using more memory allows faster</span>
<a name="line-602"></a><a name="MemoryLevel"></a><span class='hs-comment'>-- compression and a better compression ratio.</span>
<a name="line-603"></a><a name="MemoryLevel"></a><span class='hs-comment'>--</span>
<a name="line-604"></a><a name="MemoryLevel"></a><span class='hs-comment'>-- The total amount of memory used for compression depends on the 'WindowBits'</span>
<a name="line-605"></a><a name="MemoryLevel"></a><span class='hs-comment'>-- and the 'MemoryLevel'. For decompression it depends only on the</span>
<a name="line-606"></a><a name="MemoryLevel"></a><span class='hs-comment'>-- 'WindowBits'. The totals are given by the functions:</span>
<a name="line-607"></a><a name="MemoryLevel"></a><span class='hs-comment'>--</span>
<a name="line-608"></a><a name="MemoryLevel"></a><span class='hs-comment'>-- > compressTotal windowBits memLevel = 4 * 2^windowBits + 512 * 2^memLevel</span>
<a name="line-609"></a><a name="MemoryLevel"></a><span class='hs-comment'>-- > decompressTotal windowBits = 2^windowBits</span>
<a name="line-610"></a><a name="MemoryLevel"></a><span class='hs-comment'>--</span>
<a name="line-611"></a><a name="MemoryLevel"></a><span class='hs-comment'>-- For example, for compression with the default @windowBits = 15@ and</span>
<a name="line-612"></a><a name="MemoryLevel"></a><span class='hs-comment'>-- @memLevel = 8@ uses @256Kb@. So for example a network server with 100</span>
<a name="line-613"></a><a name="MemoryLevel"></a><span class='hs-comment'>-- concurrent compressed streams would use @25Mb@. The memory per stream can be</span>
<a name="line-614"></a><a name="MemoryLevel"></a><span class='hs-comment'>-- halved (at the cost of somewhat degraded and slower compressionby) by</span>
<a name="line-615"></a><a name="MemoryLevel"></a><span class='hs-comment'>-- reducing the @windowBits@ and @memLevel@ by one.</span>
<a name="line-616"></a><a name="MemoryLevel"></a><span class='hs-comment'>--</span>
<a name="line-617"></a><a name="MemoryLevel"></a><span class='hs-comment'>-- Decompression takes less memory, the default @windowBits = 15@ corresponds</span>
<a name="line-618"></a><a name="MemoryLevel"></a><span class='hs-comment'>-- to just @32Kb@.</span>
<a name="line-619"></a><a name="MemoryLevel"></a><span class='hs-comment'>--</span>
<a name="line-620"></a><a name="MemoryLevel"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>MemoryLevel</span> <span class='hs-keyglyph'>=</span>
<a name="line-621"></a> <span class='hs-conid'>DefaultMemoryLevel</span>
<a name="line-622"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>MinMemoryLevel</span>
<a name="line-623"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>MaxMemoryLevel</span>
<a name="line-624"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>MemoryLevel</span> <span class='hs-conid'>Int</span>
<a name="line-625"></a>
<a name="line-626"></a><span class='hs-comment'>{-# DEPRECATED DefaultMemoryLevel "Use defaultMemoryLevel. MemoryLevel constructors will be hidden in version 0.7" #-}</span>
<a name="line-627"></a><span class='hs-comment'>{-# DEPRECATED MinMemoryLevel "Use minMemoryLevel. MemoryLevel constructors will be hidden in version 0.7" #-}</span>
<a name="line-628"></a><span class='hs-comment'>{-# DEPRECATED MaxMemoryLevel "Use maxMemoryLevel. MemoryLevel constructors will be hidden in version 0.7" #-}</span>
<a name="line-629"></a><span class='hs-comment'>--FIXME: cannot deprecate constructor named the same as the type</span>
<a name="line-630"></a><span class='hs-comment'>{- DEPRECATED MemoryLevel "Use memoryLevel. MemoryLevel constructors will be hidden in version 0.7" -}</span>
<a name="line-631"></a>
<a name="line-632"></a><a name="defaultMemoryLevel"></a><span class='hs-comment'>-- | The default memory level. (Equivalent to @'memoryLevel' 8@)</span>
<a name="line-633"></a><span class='hs-comment'>--</span>
<a name="line-634"></a><span class='hs-definition'>defaultMemoryLevel</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MemoryLevel</span>
<a name="line-635"></a><span class='hs-definition'>defaultMemoryLevel</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>MemoryLevel</span> <span class='hs-num'>8</span>
<a name="line-636"></a>
<a name="line-637"></a><a name="minMemoryLevel"></a><span class='hs-comment'>-- | Use minimum memory. This is slow and reduces the compression ratio.</span>
<a name="line-638"></a><span class='hs-comment'>-- (Equivalent to @'memoryLevel' 1@)</span>
<a name="line-639"></a><span class='hs-comment'>--</span>
<a name="line-640"></a><span class='hs-definition'>minMemoryLevel</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MemoryLevel</span>
<a name="line-641"></a><span class='hs-definition'>minMemoryLevel</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>MemoryLevel</span> <span class='hs-num'>1</span>
<a name="line-642"></a>
<a name="line-643"></a><a name="maxMemoryLevel"></a><span class='hs-comment'>-- | Use maximum memory for optimal compression speed.</span>
<a name="line-644"></a><span class='hs-comment'>-- (Equivalent to @'memoryLevel' 9@)</span>
<a name="line-645"></a><span class='hs-comment'>--</span>
<a name="line-646"></a><span class='hs-definition'>maxMemoryLevel</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MemoryLevel</span>
<a name="line-647"></a><span class='hs-definition'>maxMemoryLevel</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>MemoryLevel</span> <span class='hs-num'>9</span>
<a name="line-648"></a>
<a name="line-649"></a><a name="memoryLevel"></a><span class='hs-comment'>-- | A specific level in the range @1..9@</span>
<a name="line-650"></a><span class='hs-comment'>--</span>
<a name="line-651"></a><span class='hs-definition'>memoryLevel</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>MemoryLevel</span>
<a name="line-652"></a><span class='hs-definition'>memoryLevel</span> <span class='hs-varid'>n</span>
<a name="line-653"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>n</span> <span class='hs-varop'>>=</span> <span class='hs-num'>1</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>n</span> <span class='hs-varop'><=</span> <span class='hs-num'>9</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>MemoryLevel</span> <span class='hs-varid'>n</span>
<a name="line-654"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"MemoryLevel must be in the range 1..9"</span>
<a name="line-655"></a>
<a name="line-656"></a><a name="fromMemoryLevel"></a><span class='hs-definition'>fromMemoryLevel</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MemoryLevel</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span>
<a name="line-657"></a><span class='hs-definition'>fromMemoryLevel</span> <span class='hs-conid'>DefaultMemoryLevel</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>8</span>
<a name="line-658"></a><span class='hs-definition'>fromMemoryLevel</span> <span class='hs-conid'>MinMemoryLevel</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>1</span>
<a name="line-659"></a><span class='hs-definition'>fromMemoryLevel</span> <span class='hs-conid'>MaxMemoryLevel</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>9</span>
<a name="line-660"></a><span class='hs-definition'>fromMemoryLevel</span> <span class='hs-layout'>(</span><span class='hs-conid'>MemoryLevel</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span>
<a name="line-661"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>n</span> <span class='hs-varop'>>=</span> <span class='hs-num'>1</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>n</span> <span class='hs-varop'><=</span> <span class='hs-num'>9</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n</span>
<a name="line-662"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"MemoryLevel must be in the range 1..9"</span>
<a name="line-663"></a>
<a name="line-664"></a>
<a name="line-665"></a><a name="CompressionStrategy"></a><span class='hs-comment'>-- | The strategy parameter is used to tune the compression algorithm.</span>
<a name="line-666"></a><a name="CompressionStrategy"></a><span class='hs-comment'>--</span>
<a name="line-667"></a><a name="CompressionStrategy"></a><span class='hs-comment'>-- The strategy parameter only affects the compression ratio but not the</span>
<a name="line-668"></a><a name="CompressionStrategy"></a><span class='hs-comment'>-- correctness of the compressed output even if it is not set appropriately.</span>
<a name="line-669"></a><a name="CompressionStrategy"></a><span class='hs-comment'>--</span>
<a name="line-670"></a><a name="CompressionStrategy"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>CompressionStrategy</span> <span class='hs-keyglyph'>=</span>
<a name="line-671"></a> <span class='hs-conid'>DefaultStrategy</span>
<a name="line-672"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Filtered</span>
<a name="line-673"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>HuffmanOnly</span>
<a name="line-674"></a>
<a name="line-675"></a><span class='hs-comment'>{-
<a name="line-676"></a>-- -- only available in zlib 1.2 and later, uncomment if you need it.
<a name="line-677"></a> | RLE -- ^ Use 'RLE' to limit match distances to one (run-length
<a name="line-678"></a> -- encoding). 'RLE' is designed to be almost as fast as
<a name="line-679"></a> -- 'HuffmanOnly', but give better compression for PNG
<a name="line-680"></a> -- image data.
<a name="line-681"></a> | Fixed -- ^ 'Fixed' prevents the use of dynamic Huffman codes,
<a name="line-682"></a> -- allowing for a simpler decoder for special applications.
<a name="line-683"></a>-}</span>
<a name="line-684"></a>
<a name="line-685"></a><span class='hs-comment'>{-# DEPRECATED DefaultStrategy "Use defaultStrategy. CompressionStrategy constructors will be hidden in version 0.7" #-}</span>
<a name="line-686"></a><span class='hs-comment'>{-# DEPRECATED Filtered "Use filteredStrategy. CompressionStrategy constructors will be hidden in version 0.7" #-}</span>
<a name="line-687"></a><span class='hs-comment'>{-# DEPRECATED HuffmanOnly "Use huffmanOnlyStrategy. CompressionStrategy constructors will be hidden in version 0.7" #-}</span>
<a name="line-688"></a>
<a name="line-689"></a><a name="defaultStrategy"></a><span class='hs-comment'>-- | Use this default compression strategy for normal data.</span>
<a name="line-690"></a><span class='hs-comment'>--</span>
<a name="line-691"></a><span class='hs-definition'>defaultStrategy</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CompressionStrategy</span>
<a name="line-692"></a><span class='hs-definition'>defaultStrategy</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DefaultStrategy</span>
<a name="line-693"></a>
<a name="line-694"></a><a name="filteredStrategy"></a><span class='hs-comment'>-- | Use the filtered compression strategy for data produced by a filter (or</span>
<a name="line-695"></a><span class='hs-comment'>-- predictor). Filtered data consists mostly of small values with a somewhat</span>
<a name="line-696"></a><span class='hs-comment'>-- random distribution. In this case, the compression algorithm is tuned to</span>
<a name="line-697"></a><span class='hs-comment'>-- compress them better. The effect of this strategy is to force more Huffman</span>
<a name="line-698"></a><span class='hs-comment'>-- coding and less string matching; it is somewhat intermediate between</span>
<a name="line-699"></a><span class='hs-comment'>-- 'defaultCompressionStrategy' and 'huffmanOnlyCompressionStrategy'.</span>
<a name="line-700"></a><span class='hs-comment'>--</span>
<a name="line-701"></a><span class='hs-definition'>filteredStrategy</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CompressionStrategy</span>
<a name="line-702"></a><span class='hs-definition'>filteredStrategy</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Filtered</span>
<a name="line-703"></a>
<a name="line-704"></a><a name="huffmanOnlyStrategy"></a><span class='hs-comment'>-- | Use the Huffman-only compression strategy to force Huffman encoding only</span>
<a name="line-705"></a><span class='hs-comment'>-- (no string match).</span>
<a name="line-706"></a><span class='hs-comment'>--</span>
<a name="line-707"></a><span class='hs-definition'>huffmanOnlyStrategy</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CompressionStrategy</span>
<a name="line-708"></a><span class='hs-definition'>huffmanOnlyStrategy</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>HuffmanOnly</span>
<a name="line-709"></a>
<a name="line-710"></a>
<a name="line-711"></a><a name="fromCompressionStrategy"></a><span class='hs-definition'>fromCompressionStrategy</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CompressionStrategy</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span>
<a name="line-712"></a><span class='hs-definition'>fromCompressionStrategy</span> <span class='hs-conid'>DefaultStrategy</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-713"></a><span class='hs-comment'>{-# LINE 726 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-714"></a><span class='hs-definition'>fromCompressionStrategy</span> <span class='hs-conid'>Filtered</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>1</span>
<a name="line-715"></a><span class='hs-comment'>{-# LINE 727 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-716"></a><span class='hs-definition'>fromCompressionStrategy</span> <span class='hs-conid'>HuffmanOnly</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>2</span>
<a name="line-717"></a><span class='hs-comment'>{-# LINE 728 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-718"></a><span class='hs-comment'>--fromCompressionStrategy RLE = #{const Z_RLE}</span>
<a name="line-719"></a><span class='hs-comment'>--fromCompressionStrategy Fixed = #{const Z_FIXED}</span>
<a name="line-720"></a>
<a name="line-721"></a>
<a name="line-722"></a><a name="withStreamPtr"></a><span class='hs-definition'>withStreamPtr</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>StreamState</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'>Stream</span> <span class='hs-varid'>a</span>
<a name="line-723"></a><span class='hs-definition'>withStreamPtr</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-724"></a> <span class='hs-varid'>stream</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getStreamState</span>
<a name="line-725"></a> <span class='hs-varid'>unsafeLiftIO</span> <span class='hs-layout'>(</span><span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>stream</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-726"></a>
<a name="line-727"></a><a name="withStreamState"></a><span class='hs-definition'>withStreamState</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>StreamState</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'>Stream</span> <span class='hs-varid'>a</span>
<a name="line-728"></a><span class='hs-definition'>withStreamState</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-729"></a> <span class='hs-varid'>stream</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getStreamState</span>
<a name="line-730"></a> <span class='hs-varid'>unsafeLiftIO</span> <span class='hs-layout'>(</span><span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>stream</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-conid'>StreamState</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-731"></a>
<a name="line-732"></a><a name="setInAvail"></a><span class='hs-definition'>setInAvail</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>()</span>
<a name="line-733"></a><span class='hs-definition'>setInAvail</span> <span class='hs-varid'>val</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withStreamPtr</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>ptr</span> <span class='hs-keyglyph'>-></span>
<a name="line-734"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pokeByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>4</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptr</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>val</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CUInt</span><span class='hs-layout'>)</span>
<a name="line-735"></a><span class='hs-comment'>{-# LINE 745 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-736"></a>
<a name="line-737"></a><a name="getInAvail"></a><span class='hs-definition'>getInAvail</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Int</span>
<a name="line-738"></a><span class='hs-definition'>getInAvail</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>liftM</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CUInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-739"></a> <span class='hs-varid'>withStreamPtr</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>4</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-740"></a><span class='hs-comment'>{-# LINE 749 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-741"></a>
<a name="line-742"></a><a name="setInNext"></a><span class='hs-definition'>setInNext</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>()</span>
<a name="line-743"></a><span class='hs-definition'>setInNext</span> <span class='hs-varid'>val</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withStreamPtr</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pokeByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptr</span> <span class='hs-varid'>val</span><span class='hs-layout'>)</span>
<a name="line-744"></a><span class='hs-comment'>{-# LINE 752 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-745"></a>
<a name="line-746"></a>
<a name="line-747"></a><span class='hs-comment'>{-# LINE 757 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-748"></a>
<a name="line-749"></a><a name="setOutFree"></a><span class='hs-definition'>setOutFree</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>()</span>
<a name="line-750"></a><span class='hs-definition'>setOutFree</span> <span class='hs-varid'>val</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withStreamPtr</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>ptr</span> <span class='hs-keyglyph'>-></span>
<a name="line-751"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pokeByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>16</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptr</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>val</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CUInt</span><span class='hs-layout'>)</span>
<a name="line-752"></a><span class='hs-comment'>{-# LINE 761 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-753"></a>
<a name="line-754"></a><a name="getOutFree"></a><span class='hs-definition'>getOutFree</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Int</span>
<a name="line-755"></a><span class='hs-definition'>getOutFree</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>liftM</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CUInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-756"></a> <span class='hs-varid'>withStreamPtr</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>16</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-757"></a><span class='hs-comment'>{-# LINE 765 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-758"></a>
<a name="line-759"></a><a name="setOutNext"></a><span class='hs-definition'>setOutNext</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>()</span>
<a name="line-760"></a><span class='hs-definition'>setOutNext</span> <span class='hs-varid'>val</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withStreamPtr</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pokeByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>12</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptr</span> <span class='hs-varid'>val</span><span class='hs-layout'>)</span>
<a name="line-761"></a><span class='hs-comment'>{-# LINE 768 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-762"></a>
<a name="line-763"></a>
<a name="line-764"></a><span class='hs-comment'>{-# LINE 773 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-765"></a>
<a name="line-766"></a><a name="inflateInit"></a><span class='hs-definition'>inflateInit</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Format</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>WindowBits</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>()</span>
<a name="line-767"></a><span class='hs-definition'>inflateInit</span> <span class='hs-varid'>format</span> <span class='hs-varid'>bits</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-768"></a> <span class='hs-varid'>checkFormatSupported</span> <span class='hs-varid'>format</span>
<a name="line-769"></a> <span class='hs-varid'>err</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>withStreamState</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>zstream</span> <span class='hs-keyglyph'>-></span>
<a name="line-770"></a> <span class='hs-varid'>c_inflateInit2</span> <span class='hs-varid'>zstream</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromWindowBits</span> <span class='hs-varid'>format</span> <span class='hs-varid'>bits</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-771"></a> <span class='hs-varid'>failIfError</span> <span class='hs-varid'>err</span>
<a name="line-772"></a> <span class='hs-varid'>getStreamState</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>unsafeLiftIO</span> <span class='hs-varop'>.</span> <span class='hs-varid'>addForeignPtrFinalizer</span> <span class='hs-varid'>c_inflateEnd</span>
<a name="line-773"></a>
<a name="line-774"></a><a name="deflateInit"></a><span class='hs-definition'>deflateInit</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Format</span>
<a name="line-775"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CompressionLevel</span>
<a name="line-776"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Method</span>
<a name="line-777"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>WindowBits</span>
<a name="line-778"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>MemoryLevel</span>
<a name="line-779"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CompressionStrategy</span>
<a name="line-780"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>()</span>
<a name="line-781"></a><span class='hs-definition'>deflateInit</span> <span class='hs-varid'>format</span> <span class='hs-varid'>compLevel</span> <span class='hs-varid'>method</span> <span class='hs-varid'>bits</span> <span class='hs-varid'>memLevel</span> <span class='hs-varid'>strategy</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-782"></a> <span class='hs-varid'>checkFormatSupported</span> <span class='hs-varid'>format</span>
<a name="line-783"></a> <span class='hs-varid'>err</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>withStreamState</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>zstream</span> <span class='hs-keyglyph'>-></span>
<a name="line-784"></a> <span class='hs-varid'>c_deflateInit2</span> <span class='hs-varid'>zstream</span>
<a name="line-785"></a> <span class='hs-layout'>(</span><span class='hs-varid'>fromCompressionLevel</span> <span class='hs-varid'>compLevel</span><span class='hs-layout'>)</span>
<a name="line-786"></a> <span class='hs-layout'>(</span><span class='hs-varid'>fromMethod</span> <span class='hs-varid'>method</span><span class='hs-layout'>)</span>
<a name="line-787"></a> <span class='hs-layout'>(</span><span class='hs-varid'>fromWindowBits</span> <span class='hs-varid'>format</span> <span class='hs-varid'>bits</span><span class='hs-layout'>)</span>
<a name="line-788"></a> <span class='hs-layout'>(</span><span class='hs-varid'>fromMemoryLevel</span> <span class='hs-varid'>memLevel</span><span class='hs-layout'>)</span>
<a name="line-789"></a> <span class='hs-layout'>(</span><span class='hs-varid'>fromCompressionStrategy</span> <span class='hs-varid'>strategy</span><span class='hs-layout'>)</span>
<a name="line-790"></a> <span class='hs-varid'>failIfError</span> <span class='hs-varid'>err</span>
<a name="line-791"></a> <span class='hs-varid'>getStreamState</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>unsafeLiftIO</span> <span class='hs-varop'>.</span> <span class='hs-varid'>addForeignPtrFinalizer</span> <span class='hs-varid'>c_deflateEnd</span>
<a name="line-792"></a>
<a name="line-793"></a><a name="inflate_"></a><span class='hs-definition'>inflate_</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Flush</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Status</span>
<a name="line-794"></a><span class='hs-definition'>inflate_</span> <span class='hs-varid'>flush</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-795"></a> <span class='hs-varid'>err</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>withStreamState</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>zstream</span> <span class='hs-keyglyph'>-></span>
<a name="line-796"></a> <span class='hs-varid'>c_inflate</span> <span class='hs-varid'>zstream</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromFlush</span> <span class='hs-varid'>flush</span><span class='hs-layout'>)</span>
<a name="line-797"></a> <span class='hs-varid'>toStatus</span> <span class='hs-varid'>err</span>
<a name="line-798"></a>
<a name="line-799"></a><a name="deflate_"></a><span class='hs-definition'>deflate_</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Flush</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Status</span>
<a name="line-800"></a><span class='hs-definition'>deflate_</span> <span class='hs-varid'>flush</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-801"></a> <span class='hs-varid'>err</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>withStreamState</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>zstream</span> <span class='hs-keyglyph'>-></span>
<a name="line-802"></a> <span class='hs-varid'>c_deflate</span> <span class='hs-varid'>zstream</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromFlush</span> <span class='hs-varid'>flush</span><span class='hs-layout'>)</span>
<a name="line-803"></a> <span class='hs-varid'>toStatus</span> <span class='hs-varid'>err</span>
<a name="line-804"></a>
<a name="line-805"></a><a name="finalise"></a><span class='hs-comment'>-- | This never needs to be used as the stream's resources will be released</span>
<a name="line-806"></a><span class='hs-comment'>-- automatically when no longer needed, however this can be used to release</span>
<a name="line-807"></a><span class='hs-comment'>-- them early. Only use this when you can guarantee that the stream will no</span>
<a name="line-808"></a><span class='hs-comment'>-- longer be needed, for example if an error occurs or if the stream ends.</span>
<a name="line-809"></a><span class='hs-comment'>--</span>
<a name="line-810"></a><span class='hs-definition'>finalise</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>()</span>
<a name="line-811"></a>
<a name="line-812"></a><span class='hs-comment'>{-# LINE 820 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-813"></a><span class='hs-comment'>--TODO: finalizeForeignPtr is ghc-only</span>
<a name="line-814"></a><span class='hs-definition'>finalise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getStreamState</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>unsafeLiftIO</span> <span class='hs-varop'>.</span> <span class='hs-varid'>finalizeForeignPtr</span>
<a name="line-815"></a>
<a name="line-816"></a><span class='hs-comment'>{-# LINE 825 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-817"></a>
<a name="line-818"></a><a name="checkFormatSupported"></a><span class='hs-definition'>checkFormatSupported</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Format</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>()</span>
<a name="line-819"></a><span class='hs-definition'>checkFormatSupported</span> <span class='hs-varid'>format</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-820"></a> <span class='hs-varid'>version</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>unsafeLiftIO</span> <span class='hs-layout'>(</span><span class='hs-varid'>peekCAString</span> <span class='hs-varop'>=<<</span> <span class='hs-varid'>c_zlibVersion</span><span class='hs-layout'>)</span>
<a name="line-821"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>version</span> <span class='hs-keyword'>of</span>
<a name="line-822"></a> <span class='hs-layout'>(</span><span class='hs-chr'>'1'</span><span class='hs-conop'>:</span><span class='hs-chr'>'.'</span><span class='hs-conop'>:</span><span class='hs-chr'>'1'</span><span class='hs-conop'>:</span><span class='hs-chr'>'.'</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span>
<a name="line-823"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>format</span> <span class='hs-varop'>==</span> <span class='hs-conid'>GZip</span>
<a name="line-824"></a> <span class='hs-varop'>||</span> <span class='hs-varid'>format</span> <span class='hs-varop'>==</span> <span class='hs-conid'>GZipOrZlib</span>
<a name="line-825"></a> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>fail</span> <span class='hs-varop'>$</span> <span class='hs-str'>"version 1.1.x of the zlib C library does not support the"</span>
<a name="line-826"></a> <span class='hs-varop'>++</span> <span class='hs-str'>" 'gzip' format via the in-memory api, only the 'raw' and "</span>
<a name="line-827"></a> <span class='hs-varop'>++</span> <span class='hs-str'>" 'zlib' formats."</span>
<a name="line-828"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-829"></a>
<a name="line-830"></a><span class='hs-comment'>----------------------</span>
<a name="line-831"></a><span class='hs-comment'>-- The foreign imports</span>
<a name="line-832"></a>
<a name="line-833"></a><a name="StreamState"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>StreamState</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>StreamState</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>StreamState</span><span class='hs-layout'>)</span>
<a name="line-834"></a>
<a name="line-835"></a><span class='hs-comment'>-- inflateInit2 and deflateInit2 are actually defined as macros in zlib.h</span>
<a name="line-836"></a><span class='hs-comment'>-- They are defined in terms of inflateInit2_ and deflateInit2_ passing two</span>
<a name="line-837"></a><span class='hs-comment'>-- additional arguments used to detect compatability problems. They pass the</span>
<a name="line-838"></a><span class='hs-comment'>-- version of zlib as a char * and the size of the z_stream struct.</span>
<a name="line-839"></a><span class='hs-comment'>-- If we compile via C then we can avoid this hassle however thats not really</span>
<a name="line-840"></a><span class='hs-comment'>-- kosher since the Haskell FFI is defined at the C ABI level, not the C</span>
<a name="line-841"></a><span class='hs-comment'>-- language level. There is no requirement to compile via C and pick up C</span>
<a name="line-842"></a><span class='hs-comment'>-- headers. So it's much better if we can make it work properly and that'd</span>
<a name="line-843"></a><span class='hs-comment'>-- also allow compiling via ghc's ncg which is a good thing since the C</span>
<a name="line-844"></a><span class='hs-comment'>-- backend is not going to be around forever.</span>
<a name="line-845"></a><span class='hs-comment'>--</span>
<a name="line-846"></a><span class='hs-comment'>-- So we define c_inflateInit2 and c_deflateInit2 here as wrappers around</span>
<a name="line-847"></a><span class='hs-comment'>-- their _ counterparts and pass the extra args.</span>
<a name="line-848"></a>
<a name="line-849"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"zlib.h inflateInit2_"</span>
<a name="line-850"></a> <span class='hs-varid'>c_inflateInit2_</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>StreamState</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>CChar</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-851"></a>
<a name="line-852"></a><a name="c_inflateInit2"></a><span class='hs-definition'>c_inflateInit2</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>StreamState</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-853"></a><span class='hs-definition'>c_inflateInit2</span> <span class='hs-varid'>z</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span>
<a name="line-854"></a> <span class='hs-varid'>withCAString</span> <span class='hs-str'>"1.2.5"</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>versionStr</span> <span class='hs-keyglyph'>-></span>
<a name="line-855"></a><span class='hs-comment'>{-# LINE 863 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-856"></a> <span class='hs-varid'>c_inflateInit2_</span> <span class='hs-varid'>z</span> <span class='hs-varid'>n</span> <span class='hs-varid'>versionStr</span> <span class='hs-layout'>(</span><span class='hs-num'>56</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span>
<a name="line-857"></a><span class='hs-comment'>{-# LINE 864 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-858"></a>
<a name="line-859"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"zlib.h inflate"</span>
<a name="line-860"></a> <span class='hs-varid'>c_inflate</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>StreamState</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-861"></a>
<a name="line-862"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"zlib.h &inflateEnd"</span>
<a name="line-863"></a> <span class='hs-varid'>c_inflateEnd</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FinalizerPtr</span> <span class='hs-conid'>StreamState</span>
<a name="line-864"></a>
<a name="line-865"></a>
<a name="line-866"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"zlib.h deflateInit2_"</span>
<a name="line-867"></a> <span class='hs-varid'>c_deflateInit2_</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>StreamState</span>
<a name="line-868"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span>
<a name="line-869"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>CChar</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span>
<a name="line-870"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-871"></a>
<a name="line-872"></a><a name="c_deflateInit2"></a><span class='hs-definition'>c_deflateInit2</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>StreamState</span>
<a name="line-873"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-874"></a><span class='hs-definition'>c_deflateInit2</span> <span class='hs-varid'>z</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-varid'>c</span> <span class='hs-varid'>d</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>=</span>
<a name="line-875"></a> <span class='hs-varid'>withCAString</span> <span class='hs-str'>"1.2.5"</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>versionStr</span> <span class='hs-keyglyph'>-></span>
<a name="line-876"></a><span class='hs-comment'>{-# LINE 882 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-877"></a> <span class='hs-varid'>c_deflateInit2_</span> <span class='hs-varid'>z</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-varid'>c</span> <span class='hs-varid'>d</span> <span class='hs-varid'>e</span> <span class='hs-varid'>versionStr</span> <span class='hs-layout'>(</span><span class='hs-num'>56</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span>
<a name="line-878"></a><span class='hs-comment'>{-# LINE 883 "Codec/Compression/Zlib/Stream.hsc" #-}</span>
<a name="line-879"></a>
<a name="line-880"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"zlib.h deflate"</span>
<a name="line-881"></a> <span class='hs-varid'>c_deflate</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>StreamState</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-882"></a>
<a name="line-883"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"zlib.h &deflateEnd"</span>
<a name="line-884"></a> <span class='hs-varid'>c_deflateEnd</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FinalizerPtr</span> <span class='hs-conid'>StreamState</span>
<a name="line-885"></a>
<a name="line-886"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"zlib.h zlibVersion"</span>
<a name="line-887"></a> <span class='hs-varid'>c_zlibVersion</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CString</span>
</pre></body>
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