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<title>Module: Net::SSH::Util::WriterBufferImpl</title>
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<table width="100%" border='0' cellpadding='0' cellspacing='0' class='banner'><tr>
<td class="file-title"><span class="file-title-prefix">Module</span><br />Net::SSH::Util::WriterBufferImpl</td>
<td align="right">
<table cellspacing=0 cellpadding=2>
<tr valign="top">
<td>In:</td>
<td>
<a href="../../../../files/lib/net/ssh/util/buffer_rb.html">lib/net/ssh/util/buffer.rb</a>
</td>
</tr>
</table>
</td>
</tr>
</table>
<!-- banner header -->
<div id="bodyContent">
<div id="content">
<div class="description"><p>
A convenience module for writing a string of encoded data. It provides an
interface for easily writing and encoding data.
</p>
</div>
<div class="sectiontitle">Methods</div>
<ul>
<li><a href="#M000096">write</a></li>
<li><a href="#M000103">write_bignum</a></li>
<li><a href="#M000102">write_bool</a></li>
<li><a href="#M000100">write_byte</a></li>
<li><a href="#M000097">write_int64</a></li>
<li><a href="#M000104">write_key</a></li>
<li><a href="#M000098">write_long</a></li>
<li><a href="#M000099">write_short</a></li>
<li><a href="#M000101">write_string</a></li>
</ul>
<div class="sectiontitle">Public Instance methods</div>
<div class="method">
<div class="title">
<a name="M000096"></a><b>write</b>( *data )
</div>
<div class="description">
<p>
Writes the given data literally into the string.
</p>
</div>
<div class="sourcecode">
<p class="source-link">[ <a href="javascript:toggleSource('M000096_source')" id="l_M000096_source">show source</a> ]</p>
<div id="M000096_source" class="dyn-source">
<pre>
<span class="ruby-comment cmt"># File lib/net/ssh/util/buffer.rb, line 159</span>
159: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">write</span>( <span class="ruby-operator">*</span><span class="ruby-identifier">data</span> )
160: <span class="ruby-ivar">@content</span> <span class="ruby-operator"><<</span> <span class="ruby-identifier">data</span>.<span class="ruby-identifier">join</span>
161: <span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div class="method">
<div class="title">
<a name="M000103"></a><b>write_bignum</b>( *n )
</div>
<div class="description">
<p>
Writes each argument to the buffer as a bignum (SSH2-style). No checking is
done to ensure that the arguments are, in fact, bignums.
</p>
</div>
<div class="sourcecode">
<p class="source-link">[ <a href="javascript:toggleSource('M000103_source')" id="l_M000103_source">show source</a> ]</p>
<div id="M000103_source" class="dyn-source">
<pre>
<span class="ruby-comment cmt"># File lib/net/ssh/util/buffer.rb, line 207</span>
207: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">write_bignum</span>( <span class="ruby-operator">*</span><span class="ruby-identifier">n</span> )
208: <span class="ruby-ivar">@content</span> <span class="ruby-operator"><<</span> <span class="ruby-identifier">n</span>.<span class="ruby-identifier">map</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">b</span><span class="ruby-operator">|</span> <span class="ruby-identifier">b</span>.<span class="ruby-identifier">to_ssh</span> }.<span class="ruby-identifier">join</span>
209: <span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div class="method">
<div class="title">
<a name="M000102"></a><b>write_bool</b>( *b )
</div>
<div class="description">
<p>
Writes each argument to the buffer as a (C-style) boolean, with 1 meaning
true, and 0 meaning false.
</p>
</div>
<div class="sourcecode">
<p class="source-link">[ <a href="javascript:toggleSource('M000102_source')" id="l_M000102_source">show source</a> ]</p>
<div id="M000102_source" class="dyn-source">
<pre>
<span class="ruby-comment cmt"># File lib/net/ssh/util/buffer.rb, line 201</span>
201: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">write_bool</span>( <span class="ruby-operator">*</span><span class="ruby-identifier">b</span> )
202: <span class="ruby-ivar">@content</span> <span class="ruby-operator"><<</span> <span class="ruby-identifier">b</span>.<span class="ruby-identifier">map</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">v</span><span class="ruby-operator">|</span> ( <span class="ruby-identifier">v</span> <span class="ruby-value">? </span><span class="ruby-value">1</span> <span class="ruby-operator">:</span> <span class="ruby-value">0</span> ).<span class="ruby-identifier">chr</span> }.<span class="ruby-identifier">join</span>
203: <span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div class="method">
<div class="title">
<a name="M000100"></a><b>write_byte</b>( *n )
</div>
<div class="description">
<p>
Writes each argument to the buffer as a byte.
</p>
</div>
<div class="sourcecode">
<p class="source-link">[ <a href="javascript:toggleSource('M000100_source')" id="l_M000100_source">show source</a> ]</p>
<div id="M000100_source" class="dyn-source">
<pre>
<span class="ruby-comment cmt"># File lib/net/ssh/util/buffer.rb, line 186</span>
186: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">write_byte</span>( <span class="ruby-operator">*</span><span class="ruby-identifier">n</span> )
187: <span class="ruby-ivar">@content</span> <span class="ruby-operator"><<</span> <span class="ruby-identifier">n</span>.<span class="ruby-identifier">map</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">c</span><span class="ruby-operator">|</span> <span class="ruby-identifier">c</span>.<span class="ruby-identifier">chr</span> }.<span class="ruby-identifier">join</span>
188: <span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div class="method">
<div class="title">
<a name="M000097"></a><b>write_int64</b>( *n )
</div>
<div class="description">
<p>
Writes each argument to the buffer as a network-byte-order-encoded 64-bit
integer (8 bytes).
</p>
</div>
<div class="sourcecode">
<p class="source-link">[ <a href="javascript:toggleSource('M000097_source')" id="l_M000097_source">show source</a> ]</p>
<div id="M000097_source" class="dyn-source">
<pre>
<span class="ruby-comment cmt"># File lib/net/ssh/util/buffer.rb, line 165</span>
165: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">write_int64</span>( <span class="ruby-operator">*</span><span class="ruby-identifier">n</span> )
166: <span class="ruby-identifier">n</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">i</span><span class="ruby-operator">|</span>
167: <span class="ruby-identifier">hi</span> = ( <span class="ruby-identifier">i</span> <span class="ruby-operator">>></span> <span class="ruby-value">32</span> ) <span class="ruby-operator">&</span> <span class="ruby-value">0x</span><span class="ruby-constant">FFFFFFFF</span>
168: <span class="ruby-identifier">lo</span> = <span class="ruby-identifier">i</span> <span class="ruby-operator">&</span> <span class="ruby-value">0x</span><span class="ruby-constant">FFFFFFFF</span>
169: <span class="ruby-ivar">@content</span> <span class="ruby-operator"><<</span> [ <span class="ruby-identifier">hi</span>, <span class="ruby-identifier">lo</span> ].<span class="ruby-identifier">pack</span>( <span class="ruby-value str">"N2"</span> )
170: <span class="ruby-keyword kw">end</span>
171: <span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div class="method">
<div class="title">
<a name="M000104"></a><b>write_key</b>( *key )
</div>
<div class="description">
<p>
Writes the given arguments to the buffer as SSH2-encoded keys.
</p>
</div>
<div class="sourcecode">
<p class="source-link">[ <a href="javascript:toggleSource('M000104_source')" id="l_M000104_source">show source</a> ]</p>
<div id="M000104_source" class="dyn-source">
<pre>
<span class="ruby-comment cmt"># File lib/net/ssh/util/buffer.rb, line 212</span>
212: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">write_key</span>( <span class="ruby-operator">*</span><span class="ruby-identifier">key</span> )
213: <span class="ruby-identifier">key</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">k</span><span class="ruby-operator">|</span>
214: <span class="ruby-identifier">write_string</span>( <span class="ruby-identifier">k</span>.<span class="ruby-identifier">ssh_type</span> )
215:
216: <span class="ruby-keyword kw">case</span> <span class="ruby-identifier">k</span>.<span class="ruby-identifier">ssh_type</span>
217: <span class="ruby-keyword kw">when</span> <span class="ruby-value str">"ssh-dss"</span>
218: <span class="ruby-identifier">write_bignum</span>( <span class="ruby-identifier">k</span>.<span class="ruby-identifier">p</span> )
219: <span class="ruby-identifier">write_bignum</span>( <span class="ruby-identifier">k</span>.<span class="ruby-identifier">q</span> )
220: <span class="ruby-identifier">write_bignum</span>( <span class="ruby-identifier">k</span>.<span class="ruby-identifier">g</span> )
221: <span class="ruby-identifier">write_bignum</span>( <span class="ruby-identifier">k</span>.<span class="ruby-identifier">pub_key</span> )
222:
223: <span class="ruby-keyword kw">when</span> <span class="ruby-value str">"ssh-rsa"</span>
224: <span class="ruby-identifier">write_bignum</span>( <span class="ruby-identifier">k</span>.<span class="ruby-identifier">e</span> )
225: <span class="ruby-identifier">write_bignum</span>( <span class="ruby-identifier">k</span>.<span class="ruby-identifier">n</span> )
226:
227: <span class="ruby-keyword kw">else</span>
228: <span class="ruby-identifier">raise</span> <span class="ruby-constant">NotImplementedError</span>,
229: <span class="ruby-node">"unsupported key type '#{k.ssh_type}'"</span>
230: <span class="ruby-keyword kw">end</span>
231: <span class="ruby-keyword kw">end</span>
232: <span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div class="method">
<div class="title">
<a name="M000098"></a><b>write_long</b>( *n )
</div>
<div class="description">
<p>
Writes each argument to the buffer as a network-byte-order-encoded long
(4-byte) integer.
</p>
</div>
<div class="sourcecode">
<p class="source-link">[ <a href="javascript:toggleSource('M000098_source')" id="l_M000098_source">show source</a> ]</p>
<div id="M000098_source" class="dyn-source">
<pre>
<span class="ruby-comment cmt"># File lib/net/ssh/util/buffer.rb, line 175</span>
175: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">write_long</span>( <span class="ruby-operator">*</span><span class="ruby-identifier">n</span> )
176: <span class="ruby-ivar">@content</span> <span class="ruby-operator"><<</span> <span class="ruby-identifier">n</span>.<span class="ruby-identifier">pack</span>( <span class="ruby-value str">"N*"</span> )
177: <span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div class="method">
<div class="title">
<a name="M000099"></a><b>write_short</b>( *n )
</div>
<div class="description">
<p>
Writes each argument to the buffer as a network-byte-order-encoded short
(2-byte) integer.
</p>
</div>
<div class="sourcecode">
<p class="source-link">[ <a href="javascript:toggleSource('M000099_source')" id="l_M000099_source">show source</a> ]</p>
<div id="M000099_source" class="dyn-source">
<pre>
<span class="ruby-comment cmt"># File lib/net/ssh/util/buffer.rb, line 181</span>
181: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">write_short</span>( <span class="ruby-operator">*</span><span class="ruby-identifier">n</span> )
182: <span class="ruby-ivar">@content</span> <span class="ruby-operator"><<</span> <span class="ruby-identifier">n</span>.<span class="ruby-identifier">pack</span>( <span class="ruby-value str">"n*"</span> )
183: <span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div class="method">
<div class="title">
<a name="M000101"></a><b>write_string</b>( *text )
</div>
<div class="description">
<p>
Writes each argument to the buffer as an SSH2-encoded string. Each string
is prefixed by its length, encoded as a 4-byte long integer.
</p>
</div>
<div class="sourcecode">
<p class="source-link">[ <a href="javascript:toggleSource('M000101_source')" id="l_M000101_source">show source</a> ]</p>
<div id="M000101_source" class="dyn-source">
<pre>
<span class="ruby-comment cmt"># File lib/net/ssh/util/buffer.rb, line 192</span>
192: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">write_string</span>( <span class="ruby-operator">*</span><span class="ruby-identifier">text</span> )
193: <span class="ruby-identifier">text</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">string</span><span class="ruby-operator">|</span>
194: <span class="ruby-identifier">write_long</span>( <span class="ruby-identifier">string</span>.<span class="ruby-identifier">length</span> )
195: <span class="ruby-identifier">write</span>( <span class="ruby-identifier">string</span> )
196: <span class="ruby-keyword kw">end</span>
197: <span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
</div>
</div>
</body>
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