<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html> <head> <!-- Generated by HsColour, http://www.cs.york.ac.uk/fp/darcs/hscolour/ --> <title>Codec/Compression/Zlib/Raw.hs</title> <link type='text/css' rel='stylesheet' href='hscolour.css' /> </head> <body> <pre><a name="line-1"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span> <a name="line-2"></a><span class='hs-comment'>-- |</span> <a name="line-3"></a><span class='hs-comment'>-- Copyright : (c) 2006-2008 Duncan Coutts</span> <a name="line-4"></a><span class='hs-comment'>-- License : BSD-style</span> <a name="line-5"></a><span class='hs-comment'>--</span> <a name="line-6"></a><span class='hs-comment'>-- Maintainer : duncan@haskell.org</span> <a name="line-7"></a><span class='hs-comment'>-- Stability : provisional</span> <a name="line-8"></a><span class='hs-comment'>-- Portability : portable (H98 + FFI)</span> <a name="line-9"></a><span class='hs-comment'>--</span> <a name="line-10"></a><span class='hs-comment'>-- Compression and decompression of data streams in the raw deflate format.</span> <a name="line-11"></a><span class='hs-comment'>--</span> <a name="line-12"></a><span class='hs-comment'>-- The format is described in detail in RFC #1951:</span> <a name="line-13"></a><span class='hs-comment'>-- <<a href="http://www.ietf.org/rfc/rfc1951.txt">http://www.ietf.org/rfc/rfc1951.txt</a>></span> <a name="line-14"></a><span class='hs-comment'>--</span> <a name="line-15"></a><span class='hs-comment'>-- See also the zlib home page: <<a href="http://zlib.net/">http://zlib.net/</a>></span> <a name="line-16"></a><span class='hs-comment'>--</span> <a name="line-17"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span> <a name="line-18"></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'>Raw</span> <span class='hs-layout'>(</span> <a name="line-19"></a> <a name="line-20"></a> <span class='hs-comment'>-- * Simple compression and decompression</span> <a name="line-21"></a> <span class='hs-varid'>compress</span><span class='hs-layout'>,</span> <a name="line-22"></a> <span class='hs-varid'>decompress</span><span class='hs-layout'>,</span> <a name="line-23"></a> <a name="line-24"></a> <span class='hs-comment'>-- * Extended api with control over compression parameters</span> <a name="line-25"></a> <span class='hs-varid'>compressWith</span><span class='hs-layout'>,</span> <a name="line-26"></a> <span class='hs-varid'>decompressWith</span><span class='hs-layout'>,</span> <a name="line-27"></a> <a name="line-28"></a> <span class='hs-conid'>CompressParams</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>defaultCompressParams</span><span class='hs-layout'>,</span> <a name="line-29"></a> <span class='hs-conid'>DecompressParams</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>defaultDecompressParams</span><span class='hs-layout'>,</span> <a name="line-30"></a> <a name="line-31"></a> <span class='hs-comment'>-- ** The compression parameter types</span> <a name="line-32"></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-33"></a> <span class='hs-varid'>defaultCompression</span><span class='hs-layout'>,</span> <a name="line-34"></a> <span class='hs-varid'>noCompression</span><span class='hs-layout'>,</span> <a name="line-35"></a> <span class='hs-varid'>bestSpeed</span><span class='hs-layout'>,</span> <a name="line-36"></a> <span class='hs-varid'>bestCompression</span><span class='hs-layout'>,</span> <a name="line-37"></a> <span class='hs-varid'>compressionLevel</span><span class='hs-layout'>,</span> <a name="line-38"></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-39"></a> <span class='hs-varid'>deflateMethod</span><span class='hs-layout'>,</span> <a name="line-40"></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-41"></a> <span class='hs-varid'>defaultWindowBits</span><span class='hs-layout'>,</span> <a name="line-42"></a> <span class='hs-varid'>windowBits</span><span class='hs-layout'>,</span> <a name="line-43"></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-44"></a> <span class='hs-varid'>defaultMemoryLevel</span><span class='hs-layout'>,</span> <a name="line-45"></a> <span class='hs-varid'>minMemoryLevel</span><span class='hs-layout'>,</span> <a name="line-46"></a> <span class='hs-varid'>maxMemoryLevel</span><span class='hs-layout'>,</span> <a name="line-47"></a> <span class='hs-varid'>memoryLevel</span><span class='hs-layout'>,</span> <a name="line-48"></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-49"></a> <span class='hs-varid'>defaultStrategy</span><span class='hs-layout'>,</span> <a name="line-50"></a> <span class='hs-varid'>filteredStrategy</span><span class='hs-layout'>,</span> <a name="line-51"></a> <span class='hs-varid'>huffmanOnlyStrategy</span><span class='hs-layout'>,</span> <a name="line-52"></a> <a name="line-53"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span> <a name="line-54"></a> <a name="line-55"></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'>Lazy</span> <span class='hs-layout'>(</span><span class='hs-conid'>ByteString</span><span class='hs-layout'>)</span> <a name="line-56"></a> <a name="line-57"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</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'>Internal</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Internal</span> <a name="line-58"></a><span class='hs-keyword'>import</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'>Internal</span> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span><span class='hs-varid'>compress</span><span class='hs-layout'>,</span> <span class='hs-varid'>decompress</span><span class='hs-layout'>)</span> <a name="line-59"></a> <a name="line-60"></a><a name="decompress"></a><span class='hs-definition'>decompress</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteString</span> <a name="line-61"></a><span class='hs-definition'>decompress</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>decompressWith</span> <span class='hs-varid'>defaultDecompressParams</span> <a name="line-62"></a> <a name="line-63"></a><a name="decompressWith"></a><span class='hs-definition'>decompressWith</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DecompressParams</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteString</span> <a name="line-64"></a><span class='hs-definition'>decompressWith</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-varid'>decompress</span> <span class='hs-varid'>rawFormat</span> <a name="line-65"></a> <a name="line-66"></a><a name="compress"></a><span class='hs-definition'>compress</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteString</span> <a name="line-67"></a><span class='hs-definition'>compress</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>compressWith</span> <span class='hs-varid'>defaultCompressParams</span> <a name="line-68"></a> <a name="line-69"></a><a name="compressWith"></a><span class='hs-definition'>compressWith</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CompressParams</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteString</span> <a name="line-70"></a><span class='hs-definition'>compressWith</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-varid'>compress</span> <span class='hs-varid'>rawFormat</span> </pre></body> </html>
