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Re: [netrexx-pipelines] New proposed filter stage: REGEX
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From: Jeff H. <Je...@Je...> - 2020-06-28 21:54:34
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<p>This is purely match/select. I had not thought of a change, but
it could be done, like CHANGE stage. On first thought, I think it
would be good to have it a separate stage, there is a need for
each.</p>
<p>Here is the test file demonstrating it:</p>
<p>
<blockquote type="cite"><tt>/** regex<br>
<br>
>>--REGEX--+--------------------------+--regex_string-(1)---><<br>
+-(--| options_string |--)-+<br>
<br>
options_string:<br>
|--+---------+--|<br>
+-NUMBERS-+ (2)<br>
<br>
<br>
Records matching the RegEx are put out on primary output<br>
Records not matching are put out on secondary, if connected,
or discarded.<br>
<br>
(1) string is a Java RegEx expresion. null string passes all
records.<br>
(2) lines are prefaced with line number, 10 characters, right
justified<br>
<br>
[Possible future options: BEFORE and AFTER, etc., to give
context, ala GREP.]<br>
<br>
*/<br>
<br>
/*<br>
20/ 6/28 Jeff Hennick<br>
*/<br>
<br>
pipe (regex_tests01)<br>
<br>
o: faninany |<br>
sort singleok |<br>
specs 2-* 1 |<br>
cons ?<br>
<br>
-- regex ?<br>
literal a1a a2b a3c d4d e5e f6f g7g|<br>
split |<br>
regex c$ |<br>
c1: compare any ~2# 1 regex ~ equal ~*OK*~ notequal
~**FAIL** at rec \\c col \\b.~ less
/Less:\nActual:\n\\p\nExpected:\n\\s\n/ more
/More:\nActual:\n\\p\nExpected:\n\\s\n/ |<br>
o: ?<br>
literal a3c |<br>
split ; |<br>
c1: ?<br>
<br>
-- numbers regex ?<br>
literal a1a a2b a3c d4d e5e f6f g7g|<br>
split |<br>
regex (numbers) c$ |<br>
c2: compare any ~2# 2 numbers regex ~ equal ~*OK*~ notequal
~**FAIL** at rec \\c col \\b.~ less
/Less:\nActual:\n\\p\nExpected:\n\\s\n/ more
/More:\nActual:\n\\p\nExpected:\n\\s\n/ |<br>
o: ?<br>
literal 3a3c |<br>
split ; |<br>
c2: ?<br>
<br>
-- numbers (secondary) ?<br>
literal a1a a2b a3c d4d e5e f6f g7g|<br>
split |<br>
t3: regex (numbers) c$ |<br>
hole ?<br>
t3: |<br>
c3: compare any ~2# 3 numbers (secondary) ~ equal ~*OK*~
notequal ~**FAIL** at rec \\c col \\b.~ less
/Less:\nActual:\n\\p\nExpected:\n\\s\n/ more
/More:\nActual:\n\\p\nExpected:\n\\s\n/ |<br>
o: ?<br>
literal 1a1a; 2a2b; 4d4d;
5e5e; 6f6f; 7g7g |<br>
split ; |<br>
c3: ?<br>
</tt></blockquote>
Jeff<br>
</p>
<div class="moz-cite-prefix">On 6/28/2020 4:35 PM, Colin wrote:<br>
</div>
<blockquote type="cite"
cite="mid:00a...@im...">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<font face="Century Gothic">I like the idea! <br>
<br>
So initially it looks like this is purely for pattern matching.
Will a future enhancement allow modifying via a regex as well?<br>
<br>
Cheers<br>
Colin K</font>
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