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  <h1>Source code for jsonrpc.jsonutil</h1><div class="highlight"><pre>
<span class="c"># $Id: jsonutil.py,v 1.2 2011/05/26 19:34:19 edwlan Exp $</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd">This module is primarily a wrapper around simplejson in order to make</span>
<span class="sd">it behave like demjson</span>

<span class="sd">- If an object being encoded has a &#39;json_equivalent&#39; attribute, that will be called to get a (more)</span>
<span class="sd">	serializable object</span>

<span class="sd">- if it has an &#39;items&#39; method, it will be called</span>
<span class="sd">	- if it defines both items and iteritems, the second will be used)</span>

<span class="sd">- if it is iterable, it will be made into a list</span>

<span class="sd">- otherwise &#39;str&#39; will be called on the object, and that result will be used</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="n">__all__</span> <span class="o">=</span> <span class="p">[</span><span class="s">&#39;encode&#39;</span><span class="p">,</span> <span class="s">&#39;decode&#39;</span><span class="p">]</span>

<span class="kn">import</span> <span class="nn">functools</span>

<span class="k">try</span><span class="p">:</span>
	<span class="kn">import</span> <span class="nn">json</span>
<span class="k">except</span> <span class="ne">ImportError</span><span class="p">:</span>
	<span class="kn">import</span> <span class="nn">simplejson</span> <span class="kn">as</span> <span class="nn">json</span>


<span class="k">def</span> <span class="nf">dict_encode</span><span class="p">(</span><span class="n">obj</span><span class="p">):</span>
	<span class="n">items</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span> <span class="s">&#39;iteritems&#39;</span><span class="p">,</span> <span class="n">obj</span><span class="o">.</span><span class="n">items</span><span class="p">)</span>
	<span class="k">return</span> <span class="nb">dict</span><span class="p">(</span> <span class="p">(</span><span class="n">encode_</span><span class="p">(</span><span class="n">k</span><span class="p">),</span><span class="n">encode_</span><span class="p">(</span><span class="n">v</span><span class="p">))</span> <span class="k">for</span> <span class="n">k</span><span class="p">,</span><span class="n">v</span> <span class="ow">in</span> <span class="n">items</span><span class="p">()</span> <span class="p">)</span>

<span class="k">def</span> <span class="nf">list_encode</span><span class="p">(</span><span class="n">obj</span><span class="p">):</span>
	<span class="k">return</span> <span class="nb">list</span><span class="p">(</span><span class="n">encode_</span><span class="p">(</span><span class="n">i</span><span class="p">)</span> <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="n">obj</span><span class="p">)</span>

<span class="k">def</span> <span class="nf">safe_encode</span><span class="p">(</span><span class="n">obj</span><span class="p">):</span>
	<span class="sd">&#39;&#39;&#39;Always return something, even if it is useless for serialization&#39;&#39;&#39;</span>
	<span class="k">try</span><span class="p">:</span> <span class="n">json</span><span class="o">.</span><span class="n">dumps</span><span class="p">(</span><span class="n">obj</span><span class="p">)</span>
	<span class="k">except</span> <span class="ne">TypeError</span><span class="p">:</span> <span class="n">obj</span> <span class="o">=</span> <span class="nb">str</span><span class="p">(</span><span class="n">obj</span><span class="p">)</span>
	<span class="k">return</span> <span class="n">obj</span>

<span class="k">def</span> <span class="nf">encode_</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span> <span class="o">**</span><span class="n">kw</span><span class="p">):</span>
	<span class="n">obj</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span> <span class="s">&#39;json_equivalent&#39;</span><span class="p">,</span> <span class="k">lambda</span><span class="p">:</span> <span class="n">obj</span><span class="p">)()</span>
	<span class="n">func</span> <span class="o">=</span> <span class="k">lambda</span> <span class="n">x</span><span class="p">:</span> <span class="n">x</span>
	<span class="k">if</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span> <span class="s">&#39;items&#39;</span><span class="p">):</span>
		<span class="n">func</span> <span class="o">=</span> <span class="n">dict_encode</span>
	<span class="k">elif</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span> <span class="s">&#39;__iter__&#39;</span><span class="p">):</span>
		<span class="n">func</span> <span class="o">=</span> <span class="n">list_encode</span>
	<span class="k">else</span><span class="p">:</span>
		<span class="n">func</span> <span class="o">=</span> <span class="n">safe_encode</span>
	<span class="k">return</span> <span class="n">func</span><span class="p">(</span><span class="n">obj</span><span class="p">)</span>


<span class="n">encode</span> <span class="o">=</span> <span class="n">functools</span><span class="o">.</span><span class="n">partial</span><span class="p">(</span><span class="n">json</span><span class="o">.</span><span class="n">dumps</span><span class="p">,</span> <span class="n">default</span><span class="o">=</span><span class="n">encode_</span><span class="p">)</span>
<span class="n">decode</span> <span class="o">=</span> <span class="n">json</span><span class="o">.</span><span class="n">loads</span>

<span class="n">__version__</span> <span class="o">=</span> <span class="s">&quot;$Revision: 1.2 $&quot;</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s">&quot;:&quot;</span><span class="p">)[</span><span class="mi">1</span><span class="p">][:</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span>
</pre></div>

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