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<h1>Penlight</h1>
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<li><a href="../index.html">Index</a></li>
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<h2>Examples</h2>
<ul class="$(kind=='Topics' and '' or 'nowrap'">
<li><a href="../examples/seesubst.lua.html">seesubst.lua</a></li>
<li><strong>sipscan.lua</strong></li>
<li><a href="../examples/symbols.lua.html">symbols.lua</a></li>
<li><a href="../examples/test-cmp.lua.html">test-cmp.lua</a></li>
<li><a href="../examples/test-data.lua.html">test-data.lua</a></li>
<li><a href="../examples/test-listcallbacks.lua.html">test-listcallbacks.lua</a></li>
<li><a href="../examples/test-pretty.lua.html">test-pretty.lua</a></li>
<li><a href="../examples/test-symbols.lua.html">test-symbols.lua</a></li>
<li><a href="../examples/testapp.lua.html">testapp.lua</a></li>
<li><a href="../examples/testclone.lua.html">testclone.lua</a></li>
<li><a href="../examples/testconfig.lua.html">testconfig.lua</a></li>
<li><a href="../examples/testglobal.lua.html">testglobal.lua</a></li>
<li><a href="../examples/testinputfields.lua.html">testinputfields.lua</a></li>
<li><a href="../examples/testinputfields2.lua.html">testinputfields2.lua</a></li>
<li><a href="../examples/testxml.lua.html">testxml.lua</a></li>
<li><a href="../examples/which.lua.html">which.lua</a></li>
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<h2>Libraries</h2>
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<li><a href="../libraries/pl.html">pl</a></li>
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<li><a href="../libraries/pl.permute.html">pl.permute</a></li>
<li><a href="../libraries/pl.pretty.html">pl.pretty</a></li>
<li><a href="../libraries/pl.seq.html">pl.seq</a></li>
<li><a href="../libraries/pl.sip.html">pl.sip</a></li>
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<h2>Manual</h2>
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<li><a href="../manual/01-introduction.md.html">Introduction</a></li>
<li><a href="../manual/02-arrays.md.html">Tables and Arrays</a></li>
<li><a href="../manual/03-strings.md.html">Strings. Higher-level operations on strings.</a></li>
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<li><a href="../manual/07-functional.md.html">Functional Programming</a></li>
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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="global">require</span> <span class="string">'pl'</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> start
<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.create_pattern(pat))
<span class="keyword">local</span> match = sip.compile(pat)
<span class="keyword">for</span> line <span class="keyword">in</span> stringx.lines(s) <span class="keyword">do</span>
<span class="keyword">if</span> match(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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