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encode.py
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<div class="blob-wrapper data type-python">
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<tr>
<td id="L1" class="blob-num js-line-number" data-line-number="1"></td>
<td id="LC1" class="blob-code js-file-line"><span class="c">#!/usr/bin/python </span></td>
</tr>
<tr>
<td id="L2" class="blob-num js-line-number" data-line-number="2"></td>
<td id="LC2" class="blob-code js-file-line">
</td>
</tr>
<tr>
<td id="L3" class="blob-num js-line-number" data-line-number="3"></td>
<td id="LC3" class="blob-code js-file-line"><span class="kn">import</span> <span class="nn">sys</span></td>
</tr>
<tr>
<td id="L4" class="blob-num js-line-number" data-line-number="4"></td>
<td id="LC4" class="blob-code js-file-line">
</td>
</tr>
<tr>
<td id="L5" class="blob-num js-line-number" data-line-number="5"></td>
<td id="LC5" class="blob-code js-file-line">
</td>
</tr>
<tr>
<td id="L6" class="blob-num js-line-number" data-line-number="6"></td>
<td id="LC6" class="blob-code js-file-line"><span class="k">def</span> <span class="nf">encode</span> <span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">outfile</span><span class="p">):</span></td>
</tr>
<tr>
<td id="L7" class="blob-num js-line-number" data-line-number="7"></td>
<td id="LC7" class="blob-code js-file-line"> <span class="c"># print "a=",a</span></td>
</tr>
<tr>
<td id="L8" class="blob-num js-line-number" data-line-number="8"></td>
<td id="LC8" class="blob-code js-file-line"> <span class="n">b</span><span class="o">=</span><span class="nb">ord</span><span class="p">(</span><span class="n">a</span><span class="p">)</span></td>
</tr>
<tr>
<td id="L9" class="blob-num js-line-number" data-line-number="9"></td>
<td id="LC9" class="blob-code js-file-line"> <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="mi">8</span><span class="p">)</span> <span class="p">:</span></td>
</tr>
<tr>
<td id="L10" class="blob-num js-line-number" data-line-number="10"></td>
<td id="LC10" class="blob-code js-file-line"> <span class="k">if</span> <span class="n">b</span> <span class="o">&</span> <span class="mi">1</span> <span class="p">:</span></td>
</tr>
<tr>
<td id="L11" class="blob-num js-line-number" data-line-number="11"></td>
<td id="LC11" class="blob-code js-file-line"> <span class="n">outfile</span><span class="o">.</span><span class="n">write</span> <span class="p">(</span><span class="nb">chr</span><span class="p">(</span><span class="mh">0x55</span><span class="p">))</span></td>
</tr>
<tr>
<td id="L12" class="blob-num js-line-number" data-line-number="12"></td>
<td id="LC12" class="blob-code js-file-line"> <span class="k">else</span> <span class="p">:</span></td>
</tr>
<tr>
<td id="L13" class="blob-num js-line-number" data-line-number="13"></td>
<td id="LC13" class="blob-code js-file-line"> <span class="n">outfile</span><span class="o">.</span><span class="n">write</span> <span class="p">(</span><span class="nb">chr</span><span class="p">(</span><span class="mh">0xAA</span><span class="p">))</span></td>
</tr>
<tr>
<td id="L14" class="blob-num js-line-number" data-line-number="14"></td>
<td id="LC14" class="blob-code js-file-line"> <span class="n">b</span> <span class="o">>>=</span><span class="mi">1</span></td>
</tr>
<tr>
<td id="L15" class="blob-num js-line-number" data-line-number="15"></td>
<td id="LC15" class="blob-code js-file-line">
</td>
</tr>
<tr>
<td id="L16" class="blob-num js-line-number" data-line-number="16"></td>
<td id="LC16" class="blob-code js-file-line"><span class="k">def</span> <span class="nf">main</span><span class="p">():</span></td>
</tr>
<tr>
<td id="L17" class="blob-num js-line-number" data-line-number="17"></td>
<td id="LC17" class="blob-code js-file-line"> <span class="k">print</span> <span class="s">"number of arguments ="</span> <span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="n">sys</span><span class="o">.</span><span class="n">argv</span><span class="p">)</span></td>
</tr>
<tr>
<td id="L18" class="blob-num js-line-number" data-line-number="18"></td>
<td id="LC18" class="blob-code js-file-line"> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">sys</span><span class="o">.</span><span class="n">argv</span><span class="p">)</span> <span class="o"><</span> <span class="mi">3</span> <span class="p">:</span></td>
</tr>
<tr>
<td id="L19" class="blob-num js-line-number" data-line-number="19"></td>
<td id="LC19" class="blob-code js-file-line"> <span class="k">print</span> <span class="s">"usage: encode in_file out_file"</span></td>
</tr>
<tr>
<td id="L20" class="blob-num js-line-number" data-line-number="20"></td>
<td id="LC20" class="blob-code js-file-line"> <span class="k">else</span> <span class="p">:</span></td>
</tr>
<tr>
<td id="L21" class="blob-num js-line-number" data-line-number="21"></td>
<td id="LC21" class="blob-code js-file-line"> <span class="n">infile</span> <span class="o">=</span> <span class="nb">open</span> <span class="p">(</span><span class="n">sys</span><span class="o">.</span><span class="n">argv</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span><span class="s">"rb"</span><span class="p">)</span></td>
</tr>
<tr>
<td id="L22" class="blob-num js-line-number" data-line-number="22"></td>
<td id="LC22" class="blob-code js-file-line"> <span class="n">outfile</span> <span class="o">=</span> <span class="nb">open</span> <span class="p">(</span><span class="n">sys</span><span class="o">.</span><span class="n">argv</span><span class="p">[</span><span class="mi">2</span><span class="p">],</span><span class="s">"wb"</span><span class="p">)</span></td>
</tr>
<tr>
<td id="L23" class="blob-num js-line-number" data-line-number="23"></td>
<td id="LC23" class="blob-code js-file-line"> <span class="n">a</span><span class="o">=</span><span class="n">infile</span><span class="o">.</span><span class="n">read</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span></td>
</tr>
<tr>
<td id="L24" class="blob-num js-line-number" data-line-number="24"></td>
<td id="LC24" class="blob-code js-file-line"> <span class="k">while</span> <span class="n">a</span> <span class="p">:</span></td>
</tr>
<tr>
<td id="L25" class="blob-num js-line-number" data-line-number="25"></td>
<td id="LC25" class="blob-code js-file-line"> <span class="n">encode</span><span class="p">(</span><span class="n">a</span><span class="p">,</span><span class="n">outfile</span><span class="p">)</span></td>
</tr>
<tr>
<td id="L26" class="blob-num js-line-number" data-line-number="26"></td>
<td id="LC26" class="blob-code js-file-line"> <span class="n">a</span><span class="o">=</span><span class="n">infile</span><span class="o">.</span><span class="n">read</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span></td>
</tr>
<tr>
<td id="L27" class="blob-num js-line-number" data-line-number="27"></td>
<td id="LC27" class="blob-code js-file-line">
</td>
</tr>
<tr>
<td id="L28" class="blob-num js-line-number" data-line-number="28"></td>
<td id="LC28" class="blob-code js-file-line"><span class="n">main</span><span class="p">()</span></td>
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