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</script></head><body><div id="package-header"><ul class="links" id="page-menu"><li><a href="index.html">Contents</a></li><li><a href="doc-index.html">Index</a></li></ul><p class="caption">base-4.5.1.0: Basic libraries</p></div><div id="content"><div id="module-header"><table class="info"><tr><th>Portability</th><td>non-portable (GHC Extensions)</td></tr><tr><th>Stability</th><td>internal</td></tr><tr><th>Maintainer</th><td>cvs-ghc@haskell.org</td></tr><tr><th>Safe Haskell</th><td>Trustworthy</td></tr></table><p class="caption">GHC.IO.Buffer</p></div><div id="table-of-contents"><p class="caption">Contents</p><ul><li><a href="#g:1">Buffers of any element
</a><ul><li><a href="#g:2">Creation
</a></li><li><a href="#g:3">Insertion/removal
</a></li><li><a href="#g:4">Inspecting
</a></li><li><a href="#g:5">Operating on the raw buffer as a Ptr
</a></li><li><a href="#g:6">Assertions
</a></li></ul></li><li><a href="#g:7">Raw buffers
</a></li></ul></div><div id="description"><p class="caption">Description</p><div class="doc"><p>Buffers used in the IO system
</p></div></div><div id="synopsis"><p id="control.syn" class="caption expander" onclick="toggleSection('syn')">Synopsis</p><ul id="section.syn" class="hide" onclick="toggleSection('syn')"><li class="src short"><span class="keyword">data</span> <a href="#t:Buffer">Buffer</a> e = <a href="#v:Buffer">Buffer</a> {<ul class="subs"><li><a href="#v:bufRaw">bufRaw</a> :: !(<a href="GHC-IO-Buffer.html#t:RawBuffer">RawBuffer</a> e)</li><li><a href="#v:bufState">bufState</a> :: <a href="GHC-IO-Buffer.html#t:BufferState">BufferState</a></li><li><a href="#v:bufSize">bufSize</a> :: !<a href="Data-Int.html#t:Int">Int</a></li><li><a href="#v:bufL">bufL</a> :: !<a href="Data-Int.html#t:Int">Int</a></li><li><a href="#v:bufR">bufR</a> :: !<a href="Data-Int.html#t:Int">Int</a></li></ul>}</li><li class="src short"><span class="keyword">data</span> <a href="#t:BufferState">BufferState</a> <ul class="subs"><li>= <a href="#v:ReadBuffer">ReadBuffer</a> </li><li>| <a href="#v:WriteBuffer">WriteBuffer</a> </li></ul></li><li class="src short"><span class="keyword">type</span> <a href="#t:CharBuffer">CharBuffer</a> = <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> <a href="Data-Char.html#t:Char">Char</a></li><li class="src short"><span class="keyword">type</span> <a href="#t:CharBufElem">CharBufElem</a> = <a href="Data-Char.html#t:Char">Char</a></li><li class="src short"><a href="#v:newByteBuffer">newByteBuffer</a> :: <a href="Data-Int.html#t:Int">Int</a> -> <a href="GHC-IO-Buffer.html#t:BufferState">BufferState</a> -> <a href="System-IO.html#t:IO">IO</a> (<a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> <a href="Data-Word.html#t:Word8">Word8</a>)</li><li class="src short"><a href="#v:newCharBuffer">newCharBuffer</a> :: <a href="Data-Int.html#t:Int">Int</a> -> <a href="GHC-IO-Buffer.html#t:BufferState">BufferState</a> -> <a href="System-IO.html#t:IO">IO</a> <a href="GHC-IO-Buffer.html#t:CharBuffer">CharBuffer</a></li><li class="src short"><a href="#v:newBuffer">newBuffer</a> :: <a href="Data-Int.html#t:Int">Int</a> -> <a href="Data-Int.html#t:Int">Int</a> -> <a href="GHC-IO-Buffer.html#t:BufferState">BufferState</a> -> <a href="System-IO.html#t:IO">IO</a> (<a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e)</li><li class="src short"><a href="#v:emptyBuffer">emptyBuffer</a> :: <a href="GHC-IO-Buffer.html#t:RawBuffer">RawBuffer</a> e -> <a href="Data-Int.html#t:Int">Int</a> -> <a href="GHC-IO-Buffer.html#t:BufferState">BufferState</a> -> <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e</li><li class="src short"><a href="#v:bufferRemove">bufferRemove</a> :: <a href="Data-Int.html#t:Int">Int</a> -> <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e -> <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e</li><li class="src short"><a href="#v:bufferAdd">bufferAdd</a> :: <a href="Data-Int.html#t:Int">Int</a> -> <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e -> <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e</li><li class="src short"><a href="#v:slideContents">slideContents</a> :: <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> <a href="Data-Word.html#t:Word8">Word8</a> -> <a href="System-IO.html#t:IO">IO</a> (<a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> <a href="Data-Word.html#t:Word8">Word8</a>)</li><li class="src short"><a href="#v:bufferAdjustL">bufferAdjustL</a> :: <a href="Data-Int.html#t:Int">Int</a> -> <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e -> <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e</li><li class="src short"><a href="#v:isEmptyBuffer">isEmptyBuffer</a> :: <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e -> <a href="Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:isFullBuffer">isFullBuffer</a> :: <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e -> <a href="Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:isFullCharBuffer">isFullCharBuffer</a> :: <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e -> <a href="Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:isWriteBuffer">isWriteBuffer</a> :: <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e -> <a href="Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:bufferElems">bufferElems</a> :: <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e -> <a href="Data-Int.html#t:Int">Int</a></li><li class="src short"><a href="#v:bufferAvailable">bufferAvailable</a> :: <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e -> <a href="Data-Int.html#t:Int">Int</a></li><li class="src short"><a href="#v:summaryBuffer">summaryBuffer</a> :: <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> a -> <a href="Data-String.html#t:String">String</a></li><li class="src short"><a href="#v:withBuffer">withBuffer</a> :: <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e -> (<a href="Foreign-Ptr.html#t:Ptr">Ptr</a> e -> <a href="System-IO.html#t:IO">IO</a> a) -> <a href="System-IO.html#t:IO">IO</a> a</li><li class="src short"><a href="#v:withRawBuffer">withRawBuffer</a> :: <a href="GHC-IO-Buffer.html#t:RawBuffer">RawBuffer</a> e -> (<a href="Foreign-Ptr.html#t:Ptr">Ptr</a> e -> <a href="System-IO.html#t:IO">IO</a> a) -> <a href="System-IO.html#t:IO">IO</a> a</li><li class="src short"><a href="#v:checkBuffer">checkBuffer</a> :: <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> a -> <a href="System-IO.html#t:IO">IO</a> <a href="../ghc-prim-0.2.0.0/GHC-Tuple.html#t:-40--41-">()</a></li><li class="src short"><span class="keyword">type</span> <a href="#t:RawBuffer">RawBuffer</a> e = <a href="Foreign-ForeignPtr-Safe.html#t:ForeignPtr">ForeignPtr</a> e</li><li class="src short"><a href="#v:readWord8Buf">readWord8Buf</a> :: <a href="GHC-IO-Buffer.html#t:RawBuffer">RawBuffer</a> <a href="Data-Word.html#t:Word8">Word8</a> -> <a href="Data-Int.html#t:Int">Int</a> -> <a href="System-IO.html#t:IO">IO</a> <a href="Data-Word.html#t:Word8">Word8</a></li><li class="src short"><a href="#v:writeWord8Buf">writeWord8Buf</a> :: <a href="GHC-IO-Buffer.html#t:RawBuffer">RawBuffer</a> <a href="Data-Word.html#t:Word8">Word8</a> -> <a href="Data-Int.html#t:Int">Int</a> -> <a href="Data-Word.html#t:Word8">Word8</a> -> <a href="System-IO.html#t:IO">IO</a> <a href="../ghc-prim-0.2.0.0/GHC-Tuple.html#t:-40--41-">()</a></li><li class="src short"><span class="keyword">type</span> <a href="#t:RawCharBuffer">RawCharBuffer</a> = <a href="GHC-IO-Buffer.html#t:RawBuffer">RawBuffer</a> <a href="GHC-IO-Buffer.html#t:CharBufElem">CharBufElem</a></li><li class="src short"><a href="#v:peekCharBuf">peekCharBuf</a> :: <a href="GHC-IO-Buffer.html#t:RawCharBuffer">RawCharBuffer</a> -> <a href="Data-Int.html#t:Int">Int</a> -> <a href="System-IO.html#t:IO">IO</a> <a href="Data-Char.html#t:Char">Char</a></li><li class="src short"><a href="#v:readCharBuf">readCharBuf</a> :: <a href="GHC-IO-Buffer.html#t:RawCharBuffer">RawCharBuffer</a> -> <a href="Data-Int.html#t:Int">Int</a> -> <a href="System-IO.html#t:IO">IO</a> (<a href="Data-Char.html#t:Char">Char</a>, <a href="Data-Int.html#t:Int">Int</a>)</li><li class="src short"><a href="#v:writeCharBuf">writeCharBuf</a> :: <a href="GHC-IO-Buffer.html#t:RawCharBuffer">RawCharBuffer</a> -> <a href="Data-Int.html#t:Int">Int</a> -> <a href="Data-Char.html#t:Char">Char</a> -> <a href="System-IO.html#t:IO">IO</a> <a href="Data-Int.html#t:Int">Int</a></li><li class="src short"><a href="#v:readCharBufPtr">readCharBufPtr</a> :: <a href="Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="GHC-IO-Buffer.html#t:CharBufElem">CharBufElem</a> -> <a href="Data-Int.html#t:Int">Int</a> -> <a href="System-IO.html#t:IO">IO</a> (<a href="Data-Char.html#t:Char">Char</a>, <a href="Data-Int.html#t:Int">Int</a>)</li><li class="src short"><a href="#v:writeCharBufPtr">writeCharBufPtr</a> :: <a href="Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="GHC-IO-Buffer.html#t:CharBufElem">CharBufElem</a> -> <a href="Data-Int.html#t:Int">Int</a> -> <a href="Data-Char.html#t:Char">Char</a> -> <a href="System-IO.html#t:IO">IO</a> <a href="Data-Int.html#t:Int">Int</a></li><li class="src short"><a href="#v:charSize">charSize</a> :: <a href="Data-Int.html#t:Int">Int</a></li></ul></div><div id="interface"><h1 id="g:1">Buffers of any element
</h1><div class="top"><p class="src"><span class="keyword">data</span> <a name="t:Buffer" class="def">Buffer</a> e </p><div class="doc"><p>A mutable array of bytes that can be passed to foreign functions.
</p><p>The buffer is represented by a record, where the record contains
the raw buffer and the start/end points of the filled portion. The
buffer contents itself is mutable, but the rest of the record is
immutable. This is a slightly odd mix, but it turns out to be
quite practical: by making all the buffer metadata immutable, we
can have operations on buffer metadata outside of the IO monad.
</p><p>The <a href="live.html">live</a> elements of the buffer are those between the <code><a href="GHC-IO-Buffer.html#v:bufL">bufL</a></code> and
<code><a href="GHC-IO-Buffer.html#v:bufR">bufR</a></code> offsets. In an empty buffer, <code><a href="GHC-IO-Buffer.html#v:bufL">bufL</a></code> is equal to <code><a href="GHC-IO-Buffer.html#v:bufR">bufR</a></code>, but
they might not be zero: for exmaple, the buffer might correspond to
a memory-mapped file and in which case <code><a href="GHC-IO-Buffer.html#v:bufL">bufL</a></code> will point to the
next location to be written, which is not necessarily the beginning
of the file.
</p></div><div class="subs constructors"><p class="caption">Constructors</p><table><tr><td class="src"><a name="v:Buffer" class="def">Buffer</a></td><td class="doc empty"> </td></tr><tr><td colspan="2"><div class="subs fields"><p class="caption">Fields</p><dl><dt class="src"><a name="v:bufRaw" class="def">bufRaw</a> :: !(<a href="GHC-IO-Buffer.html#t:RawBuffer">RawBuffer</a> e)</dt><dd class="doc empty"> </dd><dt class="src"><a name="v:bufState" class="def">bufState</a> :: <a href="GHC-IO-Buffer.html#t:BufferState">BufferState</a></dt><dd class="doc empty"> </dd><dt class="src"><a name="v:bufSize" class="def">bufSize</a> :: !<a href="Data-Int.html#t:Int">Int</a></dt><dd class="doc empty"> </dd><dt class="src"><a name="v:bufL" class="def">bufL</a> :: !<a href="Data-Int.html#t:Int">Int</a></dt><dd class="doc empty"> </dd><dt class="src"><a name="v:bufR" class="def">bufR</a> :: !<a href="Data-Int.html#t:Int">Int</a></dt><dd class="doc empty"> </dd></dl><div class="clear"></div></div></td></tr></table></div></div><div class="top"><p class="src"><span class="keyword">data</span> <a name="t:BufferState" class="def">BufferState</a> </p><div class="subs constructors"><p class="caption">Constructors</p><table><tr><td class="src"><a name="v:ReadBuffer" class="def">ReadBuffer</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a name="v:WriteBuffer" class="def">WriteBuffer</a></td><td class="doc empty"> </td></tr></table></div><div class="subs instances"><p id="control.i:BufferState" class="caption collapser" onclick="toggleSection('i:BufferState')">Instances</p><div id="section.i:BufferState" class="show"><table><tr><td class="src"><a href="Data-Eq.html#t:Eq">Eq</a> <a href="GHC-IO-Buffer.html#t:BufferState">BufferState</a></td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><span class="keyword">type</span> <a name="t:CharBuffer" class="def">CharBuffer</a> = <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> <a href="Data-Char.html#t:Char">Char</a></p></div><div class="top"><p class="src"><span class="keyword">type</span> <a name="t:CharBufElem" class="def">CharBufElem</a> = <a href="Data-Char.html#t:Char">Char</a></p></div><h2 id="g:2">Creation
</h2><div class="top"><p class="src"><a name="v:newByteBuffer" class="def">newByteBuffer</a> :: <a href="Data-Int.html#t:Int">Int</a> -> <a href="GHC-IO-Buffer.html#t:BufferState">BufferState</a> -> <a href="System-IO.html#t:IO">IO</a> (<a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> <a href="Data-Word.html#t:Word8">Word8</a>)</p></div><div class="top"><p class="src"><a name="v:newCharBuffer" class="def">newCharBuffer</a> :: <a href="Data-Int.html#t:Int">Int</a> -> <a href="GHC-IO-Buffer.html#t:BufferState">BufferState</a> -> <a href="System-IO.html#t:IO">IO</a> <a href="GHC-IO-Buffer.html#t:CharBuffer">CharBuffer</a></p></div><div class="top"><p class="src"><a name="v:newBuffer" class="def">newBuffer</a> :: <a href="Data-Int.html#t:Int">Int</a> -> <a href="Data-Int.html#t:Int">Int</a> -> <a href="GHC-IO-Buffer.html#t:BufferState">BufferState</a> -> <a href="System-IO.html#t:IO">IO</a> (<a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e)</p></div><div class="top"><p class="src"><a name="v:emptyBuffer" class="def">emptyBuffer</a> :: <a href="GHC-IO-Buffer.html#t:RawBuffer">RawBuffer</a> e -> <a href="Data-Int.html#t:Int">Int</a> -> <a href="GHC-IO-Buffer.html#t:BufferState">BufferState</a> -> <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e</p></div><h2 id="g:3">Insertion/removal
</h2><div class="top"><p class="src"><a name="v:bufferRemove" class="def">bufferRemove</a> :: <a href="Data-Int.html#t:Int">Int</a> -> <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e -> <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e</p></div><div class="top"><p class="src"><a name="v:bufferAdd" class="def">bufferAdd</a> :: <a href="Data-Int.html#t:Int">Int</a> -> <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e -> <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e</p></div><div class="top"><p class="src"><a name="v:slideContents" class="def">slideContents</a> :: <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> <a href="Data-Word.html#t:Word8">Word8</a> -> <a href="System-IO.html#t:IO">IO</a> (<a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> <a href="Data-Word.html#t:Word8">Word8</a>)</p><div class="doc"><p>slides the contents of the buffer to the beginning
</p></div></div><div class="top"><p class="src"><a name="v:bufferAdjustL" class="def">bufferAdjustL</a> :: <a href="Data-Int.html#t:Int">Int</a> -> <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e -> <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e</p></div><h2 id="g:4">Inspecting
</h2><div class="top"><p class="src"><a name="v:isEmptyBuffer" class="def">isEmptyBuffer</a> :: <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e -> <a href="Data-Bool.html#t:Bool">Bool</a></p></div><div class="top"><p class="src"><a name="v:isFullBuffer" class="def">isFullBuffer</a> :: <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e -> <a href="Data-Bool.html#t:Bool">Bool</a></p></div><div class="top"><p class="src"><a name="v:isFullCharBuffer" class="def">isFullCharBuffer</a> :: <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e -> <a href="Data-Bool.html#t:Bool">Bool</a></p></div><div class="top"><p class="src"><a name="v:isWriteBuffer" class="def">isWriteBuffer</a> :: <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e -> <a href="Data-Bool.html#t:Bool">Bool</a></p></div><div class="top"><p class="src"><a name="v:bufferElems" class="def">bufferElems</a> :: <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e -> <a href="Data-Int.html#t:Int">Int</a></p></div><div class="top"><p class="src"><a name="v:bufferAvailable" class="def">bufferAvailable</a> :: <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e -> <a href="Data-Int.html#t:Int">Int</a></p></div><div class="top"><p class="src"><a name="v:summaryBuffer" class="def">summaryBuffer</a> :: <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> a -> <a href="Data-String.html#t:String">String</a></p></div><h2 id="g:5">Operating on the raw buffer as a Ptr
</h2><div class="top"><p class="src"><a name="v:withBuffer" class="def">withBuffer</a> :: <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> e -> (<a href="Foreign-Ptr.html#t:Ptr">Ptr</a> e -> <a href="System-IO.html#t:IO">IO</a> a) -> <a href="System-IO.html#t:IO">IO</a> a</p></div><div class="top"><p class="src"><a name="v:withRawBuffer" class="def">withRawBuffer</a> :: <a href="GHC-IO-Buffer.html#t:RawBuffer">RawBuffer</a> e -> (<a href="Foreign-Ptr.html#t:Ptr">Ptr</a> e -> <a href="System-IO.html#t:IO">IO</a> a) -> <a href="System-IO.html#t:IO">IO</a> a</p></div><h2 id="g:6">Assertions
</h2><div class="top"><p class="src"><a name="v:checkBuffer" class="def">checkBuffer</a> :: <a href="GHC-IO-Buffer.html#t:Buffer">Buffer</a> a -> <a href="System-IO.html#t:IO">IO</a> <a href="../ghc-prim-0.2.0.0/GHC-Tuple.html#t:-40--41-">()</a></p></div><h1 id="g:7">Raw buffers
</h1><div class="top"><p class="src"><span class="keyword">type</span> <a name="t:RawBuffer" class="def">RawBuffer</a> e = <a href="Foreign-ForeignPtr-Safe.html#t:ForeignPtr">ForeignPtr</a> e</p></div><div class="top"><p class="src"><a name="v:readWord8Buf" class="def">readWord8Buf</a> :: <a href="GHC-IO-Buffer.html#t:RawBuffer">RawBuffer</a> <a href="Data-Word.html#t:Word8">Word8</a> -> <a href="Data-Int.html#t:Int">Int</a> -> <a href="System-IO.html#t:IO">IO</a> <a href="Data-Word.html#t:Word8">Word8</a></p></div><div class="top"><p class="src"><a name="v:writeWord8Buf" class="def">writeWord8Buf</a> :: <a href="GHC-IO-Buffer.html#t:RawBuffer">RawBuffer</a> <a href="Data-Word.html#t:Word8">Word8</a> -> <a href="Data-Int.html#t:Int">Int</a> -> <a href="Data-Word.html#t:Word8">Word8</a> -> <a href="System-IO.html#t:IO">IO</a> <a href="../ghc-prim-0.2.0.0/GHC-Tuple.html#t:-40--41-">()</a></p></div><div class="top"><p class="src"><span class="keyword">type</span> <a name="t:RawCharBuffer" class="def">RawCharBuffer</a> = <a href="GHC-IO-Buffer.html#t:RawBuffer">RawBuffer</a> <a href="GHC-IO-Buffer.html#t:CharBufElem">CharBufElem</a></p></div><div class="top"><p class="src"><a name="v:peekCharBuf" class="def">peekCharBuf</a> :: <a href="GHC-IO-Buffer.html#t:RawCharBuffer">RawCharBuffer</a> -> <a href="Data-Int.html#t:Int">Int</a> -> <a href="System-IO.html#t:IO">IO</a> <a href="Data-Char.html#t:Char">Char</a></p></div><div class="top"><p class="src"><a name="v:readCharBuf" class="def">readCharBuf</a> :: <a href="GHC-IO-Buffer.html#t:RawCharBuffer">RawCharBuffer</a> -> <a href="Data-Int.html#t:Int">Int</a> -> <a href="System-IO.html#t:IO">IO</a> (<a href="Data-Char.html#t:Char">Char</a>, <a href="Data-Int.html#t:Int">Int</a>)</p></div><div class="top"><p class="src"><a name="v:writeCharBuf" class="def">writeCharBuf</a> :: <a href="GHC-IO-Buffer.html#t:RawCharBuffer">RawCharBuffer</a> -> <a href="Data-Int.html#t:Int">Int</a> -> <a href="Data-Char.html#t:Char">Char</a> -> <a href="System-IO.html#t:IO">IO</a> <a href="Data-Int.html#t:Int">Int</a></p></div><div class="top"><p class="src"><a name="v:readCharBufPtr" class="def">readCharBufPtr</a> :: <a href="Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="GHC-IO-Buffer.html#t:CharBufElem">CharBufElem</a> -> <a href="Data-Int.html#t:Int">Int</a> -> <a href="System-IO.html#t:IO">IO</a> (<a href="Data-Char.html#t:Char">Char</a>, <a href="Data-Int.html#t:Int">Int</a>)</p></div><div class="top"><p class="src"><a name="v:writeCharBufPtr" class="def">writeCharBufPtr</a> :: <a href="Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="GHC-IO-Buffer.html#t:CharBufElem">CharBufElem</a> -> <a href="Data-Int.html#t:Int">Int</a> -> <a href="Data-Char.html#t:Char">Char</a> -> <a href="System-IO.html#t:IO">IO</a> <a href="Data-Int.html#t:Int">Int</a></p></div><div class="top"><p class="src"><a name="v:charSize" class="def">charSize</a> :: <a href="Data-Int.html#t:Int">Int</a></p></div></div></div><div id="footer"><p>Produced by <a href="http://www.haskell.org/haddock/">Haddock</a> version 2.11.0</p></div></body></html>
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