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<html>
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<title>buffer</title>
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<h1>
<a name="XMLSEC-BUFFER"></a>buffer</h1>
<div class="REFNAMEDIV">
<a name="AEN3652"></a><h2>Name</h2>buffer -- Binary buffer implementation.</div>
<div class="REFSYNOPSISDIV">
<a name="XMLSEC-BUFFER.SYNOPSIS"></a><h2>Synopsis</h2>
<pre class="SYNOPSIS">enum <a href="xmlsec-buffer.html#XMLSECALLOCMODE">xmlSecAllocMode</a>;
struct <a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBuffer</a>;
<font>void</font> <a href="xmlsec-buffer.html#XMLSECBUFFERSETDEFAULTALLOCMODE">xmlSecBufferSetDefaultAllocMode</a> (<a href="xmlsec-buffer.html#XMLSECALLOCMODE">xmlSecAllocMode</a> defAllocMode,
<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> defInitialSize);
<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> <a href="xmlsec-buffer.html#XMLSECBUFFERCREATE">xmlSecBufferCreate</a> (<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> size);
<font>void</font> <a href="xmlsec-buffer.html#XMLSECBUFFERDESTROY">xmlSecBufferDestroy</a> (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf);
<font>int</font> <a href="xmlsec-buffer.html#XMLSECBUFFERINITIALIZE">xmlSecBufferInitialize</a> (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> size);
<font>void</font> <a href="xmlsec-buffer.html#XMLSECBUFFERFINALIZE">xmlSecBufferFinalize</a> (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf);
<a href="xmlsec-xmlsec.html#XMLSECBYTE">xmlSecByte</a>* <a href="xmlsec-buffer.html#XMLSECBUFFERGETDATA">xmlSecBufferGetData</a> (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf);
<font>int</font> <a href="xmlsec-buffer.html#XMLSECBUFFERSETDATA">xmlSecBufferSetData</a> (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
const <a href="xmlsec-xmlsec.html#XMLSECBYTE">xmlSecByte</a> *data,
<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> size);
<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> <a href="xmlsec-buffer.html#XMLSECBUFFERGETSIZE">xmlSecBufferGetSize</a> (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf);
<font>int</font> <a href="xmlsec-buffer.html#XMLSECBUFFERSETSIZE">xmlSecBufferSetSize</a> (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> size);
<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> <a href="xmlsec-buffer.html#XMLSECBUFFERGETMAXSIZE">xmlSecBufferGetMaxSize</a> (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf);
<font>int</font> <a href="xmlsec-buffer.html#XMLSECBUFFERSETMAXSIZE">xmlSecBufferSetMaxSize</a> (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> size);
<font>void</font> <a href="xmlsec-buffer.html#XMLSECBUFFEREMPTY">xmlSecBufferEmpty</a> (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf);
<font>int</font> <a href="xmlsec-buffer.html#XMLSECBUFFERAPPEND">xmlSecBufferAppend</a> (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
const <a href="xmlsec-xmlsec.html#XMLSECBYTE">xmlSecByte</a> *data,
<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> size);
<font>int</font> <a href="xmlsec-buffer.html#XMLSECBUFFERPREPEND">xmlSecBufferPrepend</a> (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
const <a href="xmlsec-xmlsec.html#XMLSECBYTE">xmlSecByte</a> *data,
<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> size);
<font>int</font> <a href="xmlsec-buffer.html#XMLSECBUFFERREMOVEHEAD">xmlSecBufferRemoveHead</a> (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> size);
<font>int</font> <a href="xmlsec-buffer.html#XMLSECBUFFERREMOVETAIL">xmlSecBufferRemoveTail</a> (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> size);
<font>int</font> <a href="xmlsec-buffer.html#XMLSECBUFFERREADFILE">xmlSecBufferReadFile</a> (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
const <font>char</font> *filename);
<font>int</font> <a href="xmlsec-buffer.html#XMLSECBUFFERBASE64NODECONTENTREAD">xmlSecBufferBase64NodeContentRead</a> (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
<font>xmlNodePtr</font> node);
<font>int</font> <a href="xmlsec-buffer.html#XMLSECBUFFERBASE64NODECONTENTWRITE">xmlSecBufferBase64NodeContentWrite</a> (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
<font>xmlNodePtr</font> node,
<font>int</font> columns);
<font>xmlOutputBufferPtr</font> <a href="xmlsec-buffer.html#XMLSECBUFFERCREATEOUTPUTBUFFER">xmlSecBufferCreateOutputBuffer</a> (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf);</pre>
</div>
<div class="REFSECT1">
<a name="XMLSEC-BUFFER.DESCRIPTION"></a><h2>Description</h2>
<p>Binary buffer implementation.</p>
</div>
<div class="REFSECT1">
<a name="XMLSEC-BUFFER.DETAILS"></a><h2>Details</h2>
<div class="REFSECT2">
<a name="XMLSECALLOCMODE"></a><h3>enum xmlSecAllocMode</h3>
<pre class="PROGRAMLISTING">typedef enum {
xmlSecAllocModeExact = 0,
xmlSecAllocModeDouble
} xmlSecAllocMode;</pre>
<p>The memory allocation mode (used by <code class="PARAMETER">xmlSecBuffer</code> and <code class="PARAMETER">xmlSecList</code>).</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="XMLSECALLOCMODEEXACT"><span style="white-space: nowrap"><tt class="LITERAL">xmlSecAllocModeExact</tt></span></a></td>
<td align="LEFT" valign="TOP"><p> the memory allocation mode that minimizes total
allocated memory size.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="XMLSECALLOCMODEDOUBLE"><span style="white-space: nowrap"><tt class="LITERAL">xmlSecAllocModeDouble</tt></span></a></td>
<td align="LEFT" valign="TOP"><p> the memory allocation mode that tries to minimize
the number of malloc calls.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFER"></a><h3>struct xmlSecBuffer</h3>
<pre class="PROGRAMLISTING">struct xmlSecBuffer {
xmlSecByte* data;
xmlSecSize size;
xmlSecSize maxSize;
xmlSecAllocMode allocMode;
};</pre>
<p>Binary data buffer.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3769"><span style="white-space: nowrap"><a href="xmlsec-xmlsec.html#XMLSECBYTE">xmlSecByte</a> *<code class="STRUCTFIELD">data</code>;</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to buffer data.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3775"><span style="white-space: nowrap"><a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> <code class="STRUCTFIELD">size</code>;</span></a></td>
<td align="LEFT" valign="TOP"><p> the current data size.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3781"><span style="white-space: nowrap"><a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> <code class="STRUCTFIELD">maxSize</code>;</span></a></td>
<td align="LEFT" valign="TOP"><p> the max data size (allocated buffer size).</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3787"><span style="white-space: nowrap"><a href="xmlsec-buffer.html#XMLSECALLOCMODE">xmlSecAllocMode</a> <code class="STRUCTFIELD">allocMode</code>;</span></a></td>
<td align="LEFT" valign="TOP"><p> the buffer memory allocation mode.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFERSETDEFAULTALLOCMODE"></a><h3>xmlSecBufferSetDefaultAllocMode ()</h3>
<pre class="PROGRAMLISTING"><font>void</font> xmlSecBufferSetDefaultAllocMode (<a href="xmlsec-buffer.html#XMLSECALLOCMODE">xmlSecAllocMode</a> defAllocMode,
<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> defInitialSize);</pre>
<p>Sets new global default allocation mode and minimal intial size.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3804"><span style="white-space: nowrap"><code class="PARAMETER">defAllocMode</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the new default buffer allocation mode.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3809"><span style="white-space: nowrap"><code class="PARAMETER">defInitialSize</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the new default buffer minimal intial size.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFERCREATE"></a><h3>xmlSecBufferCreate ()</h3>
<pre class="PROGRAMLISTING"><a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> xmlSecBufferCreate (<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> size);</pre>
<p>Allocates and initalizes new memory buffer with given size.
Caller is responsible for calling <a href="xmlsec-buffer.html#XMLSECBUFFERDESTROY"><span class="TYPE">xmlSecBufferDestroy</span></a> function
to free the buffer.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3826"><span style="white-space: nowrap"><code class="PARAMETER">size</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the intial size.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3831"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> pointer to newly allocated buffer or NULL if an error occurs.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFERDESTROY"></a><h3>xmlSecBufferDestroy ()</h3>
<pre class="PROGRAMLISTING"><font>void</font> xmlSecBufferDestroy (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf);</pre>
<p>Desrtoys buffer object created with <a href="xmlsec-buffer.html#XMLSECBUFFERCREATE"><span class="TYPE">xmlSecBufferCreate</span></a> function.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody><tr>
<td align="LEFT" valign="TOP"><a name="AEN3848"><span style="white-space: nowrap"><code class="PARAMETER">buf</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to buffer object.</p></td>
</tr></tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFERINITIALIZE"></a><h3>xmlSecBufferInitialize ()</h3>
<pre class="PROGRAMLISTING"><font>int</font> xmlSecBufferInitialize (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> size);</pre>
<p>Initializes buffer object <code class="PARAMETER">buf</code>. Caller is responsible for calling
<a href="xmlsec-buffer.html#XMLSECBUFFERFINALIZE"><span class="TYPE">xmlSecBufferFinalize</span></a> function to free allocated resources.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3867"><span style="white-space: nowrap"><code class="PARAMETER">buf</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to buffer object.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3872"><span style="white-space: nowrap"><code class="PARAMETER">size</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the initial buffer size.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3877"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 0 on success or a negative value if an error occurs.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFERFINALIZE"></a><h3>xmlSecBufferFinalize ()</h3>
<pre class="PROGRAMLISTING"><font>void</font> xmlSecBufferFinalize (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf);</pre>
<p>Frees allocated resource for a buffer intialized with <a href="xmlsec-buffer.html#XMLSECBUFFERINITIALIZE"><span class="TYPE">xmlSecBufferInitialize</span></a>
function.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody><tr>
<td align="LEFT" valign="TOP"><a name="AEN3894"><span style="white-space: nowrap"><code class="PARAMETER">buf</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to buffer object.</p></td>
</tr></tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFERGETDATA"></a><h3>xmlSecBufferGetData ()</h3>
<pre class="PROGRAMLISTING"><a href="xmlsec-xmlsec.html#XMLSECBYTE">xmlSecByte</a>* xmlSecBufferGetData (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf);</pre>
<p>Gets pointer to buffer's data.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3909"><span style="white-space: nowrap"><code class="PARAMETER">buf</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to buffer object.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3914"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> pointer to buffer's data.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFERSETDATA"></a><h3>xmlSecBufferSetData ()</h3>
<pre class="PROGRAMLISTING"><font>int</font> xmlSecBufferSetData (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
const <a href="xmlsec-xmlsec.html#XMLSECBYTE">xmlSecByte</a> *data,
<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> size);</pre>
<p>Sets the value of the buffer to <code class="PARAMETER">data</code>.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3932"><span style="white-space: nowrap"><code class="PARAMETER">buf</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to buffer object.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3937"><span style="white-space: nowrap"><code class="PARAMETER">data</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the data.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3942"><span style="white-space: nowrap"><code class="PARAMETER">size</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the data size.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3947"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 0 on success or a negative value if an error occurs.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFERGETSIZE"></a><h3>xmlSecBufferGetSize ()</h3>
<pre class="PROGRAMLISTING"><a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> xmlSecBufferGetSize (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf);</pre>
<p>Gets the current buffer data size.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3962"><span style="white-space: nowrap"><code class="PARAMETER">buf</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to buffer object.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3967"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the current data size.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFERSETSIZE"></a><h3>xmlSecBufferSetSize ()</h3>
<pre class="PROGRAMLISTING"><font>int</font> xmlSecBufferSetSize (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> size);</pre>
<p>Sets new buffer data size. If necessary, buffer grows to
have at least <code class="PARAMETER">size</code> bytes.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3984"><span style="white-space: nowrap"><code class="PARAMETER">buf</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to buffer object.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3989"><span style="white-space: nowrap"><code class="PARAMETER">size</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the new data size.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3994"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 0 on success or a negative value if an error occurs.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFERGETMAXSIZE"></a><h3>xmlSecBufferGetMaxSize ()</h3>
<pre class="PROGRAMLISTING"><a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> xmlSecBufferGetMaxSize (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf);</pre>
<p>Gets the maximum (allocated) buffer size.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4009"><span style="white-space: nowrap"><code class="PARAMETER">buf</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to buffer object.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4014"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the maximum (allocated) buffer size.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFERSETMAXSIZE"></a><h3>xmlSecBufferSetMaxSize ()</h3>
<pre class="PROGRAMLISTING"><font>int</font> xmlSecBufferSetMaxSize (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> size);</pre>
<p>Sets new buffer maximum size. If necessary, buffer grows to
have at least <code class="PARAMETER">size</code> bytes.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4031"><span style="white-space: nowrap"><code class="PARAMETER">buf</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to buffer object.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4036"><span style="white-space: nowrap"><code class="PARAMETER">size</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the new maximum size.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4041"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 0 on success or a negative value if an error occurs.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFEREMPTY"></a><h3>xmlSecBufferEmpty ()</h3>
<pre class="PROGRAMLISTING"><font>void</font> xmlSecBufferEmpty (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf);</pre>
<p>Empties the buffer.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody><tr>
<td align="LEFT" valign="TOP"><a name="AEN4056"><span style="white-space: nowrap"><code class="PARAMETER">buf</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to buffer object.</p></td>
</tr></tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFERAPPEND"></a><h3>xmlSecBufferAppend ()</h3>
<pre class="PROGRAMLISTING"><font>int</font> xmlSecBufferAppend (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
const <a href="xmlsec-xmlsec.html#XMLSECBYTE">xmlSecByte</a> *data,
<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> size);</pre>
<p>Appends the <code class="PARAMETER">data</code> after the current data stored in the buffer.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4074"><span style="white-space: nowrap"><code class="PARAMETER">buf</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to buffer object.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4079"><span style="white-space: nowrap"><code class="PARAMETER">data</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the data.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4084"><span style="white-space: nowrap"><code class="PARAMETER">size</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the data size.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4089"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 0 on success or a negative value if an error occurs.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFERPREPEND"></a><h3>xmlSecBufferPrepend ()</h3>
<pre class="PROGRAMLISTING"><font>int</font> xmlSecBufferPrepend (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
const <a href="xmlsec-xmlsec.html#XMLSECBYTE">xmlSecByte</a> *data,
<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> size);</pre>
<p>Prepends the <code class="PARAMETER">data</code> before the current data stored in the buffer.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4107"><span style="white-space: nowrap"><code class="PARAMETER">buf</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to buffer object.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4112"><span style="white-space: nowrap"><code class="PARAMETER">data</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the data.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4117"><span style="white-space: nowrap"><code class="PARAMETER">size</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the data size.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4122"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 0 on success or a negative value if an error occurs.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFERREMOVEHEAD"></a><h3>xmlSecBufferRemoveHead ()</h3>
<pre class="PROGRAMLISTING"><font>int</font> xmlSecBufferRemoveHead (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> size);</pre>
<p>Removes <code class="PARAMETER">size</code> bytes from the beginning of the current buffer.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4139"><span style="white-space: nowrap"><code class="PARAMETER">buf</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to buffer object.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4144"><span style="white-space: nowrap"><code class="PARAMETER">size</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the number of bytes to be removed.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4149"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 0 on success or a negative value if an error occurs.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFERREMOVETAIL"></a><h3>xmlSecBufferRemoveTail ()</h3>
<pre class="PROGRAMLISTING"><font>int</font> xmlSecBufferRemoveTail (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
<a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> size);</pre>
<p>Removes <code class="PARAMETER">size</code> bytes from the end of current buffer.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4166"><span style="white-space: nowrap"><code class="PARAMETER">buf</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to buffer object.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4171"><span style="white-space: nowrap"><code class="PARAMETER">size</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the number of bytes to be removed.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4176"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 0 on success or a negative value if an error occurs.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFERREADFILE"></a><h3>xmlSecBufferReadFile ()</h3>
<pre class="PROGRAMLISTING"><font>int</font> xmlSecBufferReadFile (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
const <font>char</font> *filename);</pre>
<p>Reads the content of the file <code class="PARAMETER">filename</code> in the buffer.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4193"><span style="white-space: nowrap"><code class="PARAMETER">buf</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to buffer object.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4198"><span style="white-space: nowrap"><code class="PARAMETER">filename</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the filename.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4203"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 0 on success or a negative value if an error occurs.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFERBASE64NODECONTENTREAD"></a><h3>xmlSecBufferBase64NodeContentRead ()</h3>
<pre class="PROGRAMLISTING"><font>int</font> xmlSecBufferBase64NodeContentRead (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
<font>xmlNodePtr</font> node);</pre>
<p>Reads the content of the <code class="PARAMETER">node</code>, base64 decodes it and stores the
result in the buffer.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4220"><span style="white-space: nowrap"><code class="PARAMETER">buf</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to buffer object.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4225"><span style="white-space: nowrap"><code class="PARAMETER">node</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to node.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4230"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 0 on success or a negative value if an error occurs.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFERBASE64NODECONTENTWRITE"></a><h3>xmlSecBufferBase64NodeContentWrite ()</h3>
<pre class="PROGRAMLISTING"><font>int</font> xmlSecBufferBase64NodeContentWrite (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf,
<font>xmlNodePtr</font> node,
<font>int</font> columns);</pre>
<p>Sets the content of the <code class="PARAMETER">node</code> to the base64 encoded buffer data.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4248"><span style="white-space: nowrap"><code class="PARAMETER">buf</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to buffer object.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4253"><span style="white-space: nowrap"><code class="PARAMETER">node</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to a node.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4258"><span style="white-space: nowrap"><code class="PARAMETER">columns</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the max line size fro base64 encoded data.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4263"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 0 on success or a negative value if an error occurs.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBUFFERCREATEOUTPUTBUFFER"></a><h3>xmlSecBufferCreateOutputBuffer ()</h3>
<pre class="PROGRAMLISTING"><font>xmlOutputBufferPtr</font> xmlSecBufferCreateOutputBuffer (<a href="xmlsec-buffer.html#XMLSECBUFFER">xmlSecBufferPtr</a> buf);</pre>
<p>Creates new LibXML output buffer to store data in the <code class="PARAMETER">buf</code>. Caller is
responsible for destroying <code class="PARAMETER">buf</code> when processing is done.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4280"><span style="white-space: nowrap"><code class="PARAMETER">buf</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the pointer to buffer.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN4285"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> pointer to newly allocated output buffer or NULL if an error
occurs.</p></td>
</tr>
</tbody></table>
</div>
</div>
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