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Asked: 2026-06-01T12:27:35+00:00

I’m opening a file and finding the line I need, but then I have

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I’m opening a file and finding the line I need, but then I have trouble creating a variable from the found string

70c 08:04:04.014    rexx    TRACE   2203 8=4.4|9=892|35=J|49=ICE_SM_S|56=SM|34=280|70=0241608914160889|71=0|626=2|793=16|72=|466=1164266784|857=0|73=1|11=|37=1156426784|526=1156426674|38=1|198=1310883PTM|54=1|6=117.2100000000|336=R|625=P|55=B|461=FXXXXX|200=20120901|207=IFEU|53=1|30=ICE|453=2|448=SLM|447=C|452=7|448=FFC|447=C|452=12|75=20120210|60=20120310-09:04:04|77=O|58=CYU795|232=14|233=GL_TRADEJOBOUT|234=N|233=GL_ORDERJOBOUT|234=N|233=GL_TAKEN|234=0|233=GL_TRADETYPE|234=E|

This is the string and I want to assign it to a variable of tag198, so it would be

tag198 = '1310883PTMS'

Anything after | is not needed.

tag198 = line.match(/198=(.*)/)[1]
puts tag198

but that keeps all after 198; I need just the string prior to the |.

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1 Answer

  1. Editorial Team

    Your regular expression’s * is greedy, and will consume all characters it can without stopping the rest of the expression from matching. There is nothing in the expression that tells ruby when to stop collecting characters.

    Look at regular-expressions.info. A partial fix for your problem would be to put a ‘|’ after your capture:

    tag198=line.match(/198=(.*)\|/)[1] puts tag198

    The ‘|’ is escaped as it has special meaning in regexes otherwise. This doesn’t yet work though, because the * can still consume ‘|’ characters, so long as it leaves one behind to match the ‘|’ in our expression. To fix completely, prevent the * from capturing any pipes:

    tag198 = line.match(/198=([^|]*)\|/)[1] puts tag198

    See results of this change here.

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