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<h2>Examples</h2>
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    <h2>sipscan.lua</h2>
<pre>
<span class="comment">-- another SIP example, shows how an awkward log file format
</span><span class="comment">-- can be parsed. It also prints out the actual Lua string
</span><span class="comment">-- pattern generated:
</span><span class="comment">-- SYNC%s*%[([+%-%d]%d*)%]%s*([+%-%d]%d*)%s*([+%-%d]%d*)
</span>
<span class="keyword">local</span> sip = <span class="global">require</span> <span class="string">'pl.sip'</span>
<span class="keyword">local</span> stringx = <span class="global">require</span> <span class="string">'pl.stringx'</span>

<span class="keyword">local</span> s = <span class="string">[[
SYNC [1] 0 547 (14679 sec)
SYNC [2] 0 555 (14679 sec)
SYNC [3] 0 563 (14679 sec)
SYNC [4] 0 571 (14679 sec)
SYNC [5] -1 580 (14679 sec)
SYNC [6] 0 587 (14679 sec)
]]</span>


<span class="keyword">local</span> first = <span class="keyword">true</span>
<span class="keyword">local</span> expected
<span class="keyword">local</span> res = {}
<span class="keyword">local</span> pat = <span class="string">'SYNC [$i{seq}] $i{diff} $i{val}'</span>
<span class="global">print</span>(sip.<span class="function-name">create_pattern</span>(pat))
<span class="keyword">local</span> match = sip.<span class="function-name">compile</span>(pat)
<span class="keyword">for</span> line <span class="keyword">in</span> stringx.<span class="function-name">lines</span>(s) <span class="keyword">do</span>
  <span class="keyword">if</span> <span class="function-name">match</span>(line,res) <span class="keyword">then</span>
    <span class="keyword">if</span> first <span class="keyword">then</span>
      expected = res.val
      first = <span class="keyword">false</span>
    <span class="keyword">end</span>
    <span class="global">print</span>(res.val,expected - res.val)
    expected = expected + <span class="number">8</span>
  <span class="keyword">end</span>
<span class="keyword">end</span></pre>


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