snipt

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C

Dump hexadecimal representation to a stdio stream.

static void
fhexdump(FILE *stream, unsigned char *buf, int buflen)
{
    for (int i = 0; i < buflen; i += 16) {
        fprintf(stream, "%06x: ", i);
        for (int j = 0; j < 16; ++j) {
            if (i+j < buflen)
              fprintf(stream, "%02x ", buf[i+j]);
            else
              fprintf(stream, "   ");
        }
        fprintf(stream, " ");
        for (int j = 0; j < 16; ++j) {
            if (i+j < buflen)
                fprintf(stream, "%c", isprint(buf[i+j]) ? buf[i+j] : '.');
        }
        fprintf(stream, "\n");
    }
}

Description

Dump hexadecimal representation to a stream. Based on a response from http://stackoverflow.com/questions/29242
https://snipt.net/embed/385c9e6c0906ea333a3b60e5b747a06c/
/raw/385c9e6c0906ea333a3b60e5b747a06c/
385c9e6c0906ea333a3b60e5b747a06c
c
C
20
2019-08-24T15:53:28
True
False
False
Apr 04, 2013 at 12:22 AM
/api/public/snipt/58771/
dump-hexadecimal-representation-to-a-stdio-stream
<table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><a href="#L-1"> 1</a> <a href="#L-2"> 2</a> <a href="#L-3"> 3</a> <a href="#L-4"> 4</a> <a href="#L-5"> 5</a> <a href="#L-6"> 6</a> <a href="#L-7"> 7</a> <a href="#L-8"> 8</a> <a href="#L-9"> 9</a> <a href="#L-10">10</a> <a href="#L-11">11</a> <a href="#L-12">12</a> <a href="#L-13">13</a> <a href="#L-14">14</a> <a href="#L-15">15</a> <a href="#L-16">16</a> <a href="#L-17">17</a> <a href="#L-18">18</a> <a href="#L-19">19</a></pre></div></td><td class="code"><div class="highlight"><pre><span></span><span id="L-1"><a name="L-1"></a><span class="k">static</span> <span class="kt">void</span> </span><span id="L-2"><a name="L-2"></a><span class="nf">fhexdump</span><span class="p">(</span><span class="kt">FILE</span> <span class="o">*</span><span class="n">stream</span><span class="p">,</span> <span class="kt">unsigned</span> <span class="kt">char</span> <span class="o">*</span><span class="n">buf</span><span class="p">,</span> <span class="kt">int</span> <span class="n">buflen</span><span class="p">)</span> </span><span id="L-3"><a name="L-3"></a><span class="p">{</span> </span><span id="L-4"><a name="L-4"></a> <span class="k">for</span> <span class="p">(</span><span class="kt">int</span> <span class="n">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="n">i</span> <span class="o">&lt;</span> <span class="n">buflen</span><span class="p">;</span> <span class="n">i</span> <span class="o">+=</span> <span class="mi">16</span><span class="p">)</span> <span class="p">{</span> </span><span id="L-5"><a name="L-5"></a> <span class="n">fprintf</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="s">&quot;%06x: &quot;</span><span class="p">,</span> <span class="n">i</span><span class="p">);</span> </span><span id="L-6"><a name="L-6"></a> <span class="k">for</span> <span class="p">(</span><span class="kt">int</span> <span class="n">j</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="n">j</span> <span class="o">&lt;</span> <span class="mi">16</span><span class="p">;</span> <span class="o">++</span><span class="n">j</span><span class="p">)</span> <span class="p">{</span> </span><span id="L-7"><a name="L-7"></a> <span class="k">if</span> <span class="p">(</span><span class="n">i</span><span class="o">+</span><span class="n">j</span> <span class="o">&lt;</span> <span class="n">buflen</span><span class="p">)</span> </span><span id="L-8"><a name="L-8"></a> <span class="n">fprintf</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="s">&quot;%02x &quot;</span><span class="p">,</span> <span class="n">buf</span><span class="p">[</span><span class="n">i</span><span class="o">+</span><span class="n">j</span><span class="p">]);</span> </span><span id="L-9"><a name="L-9"></a> <span class="k">else</span> </span><span id="L-10"><a name="L-10"></a> <span class="n">fprintf</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="s">&quot; &quot;</span><span class="p">);</span> </span><span id="L-11"><a name="L-11"></a> <span class="p">}</span> </span><span id="L-12"><a name="L-12"></a> <span class="n">fprintf</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="s">&quot; &quot;</span><span class="p">);</span> </span><span id="L-13"><a name="L-13"></a> <span class="k">for</span> <span class="p">(</span><span class="kt">int</span> <span class="n">j</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="n">j</span> <span class="o">&lt;</span> <span class="mi">16</span><span class="p">;</span> <span class="o">++</span><span class="n">j</span><span class="p">)</span> <span class="p">{</span> </span><span id="L-14"><a name="L-14"></a> <span class="k">if</span> <span class="p">(</span><span class="n">i</span><span class="o">+</span><span class="n">j</span> <span class="o">&lt;</span> <span class="n">buflen</span><span class="p">)</span> </span><span id="L-15"><a name="L-15"></a> <span class="n">fprintf</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="s">&quot;%c&quot;</span><span class="p">,</span> <span class="n">isprint</span><span class="p">(</span><span class="n">buf</span><span class="p">[</span><span class="n">i</span><span class="o">+</span><span class="n">j</span><span class="p">])</span> <span class="o">?</span> <span class="n">buf</span><span class="p">[</span><span class="n">i</span><span class="o">+</span><span class="n">j</span><span class="p">]</span> <span class="o">:</span> <span class="sc">&#39;.&#39;</span><span class="p">);</span> </span><span id="L-16"><a name="L-16"></a> <span class="p">}</span> </span><span id="L-17"><a name="L-17"></a> <span class="n">fprintf</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="s">&quot;</span><span class="se">\n</span><span class="s">&quot;</span><span class="p">);</span> </span><span id="L-18"><a name="L-18"></a> <span class="p">}</span> </span><span id="L-19"><a name="L-19"></a><span class="p">}</span> </span></pre></div> </td></tr></table>
c, debug, hex