Good day,monks.
It's not the first time I ask about this..
The folloing is the example of files with commands.
Start context
duplex
Half
Pass level = 2
negotiation
Pass level = 2
back-pressure
Pass level = 2
* Exit context *
There are many different contexts in this file.But they all end with the line "* Exit context *". What I need is to be able to to parse the lines between the closest "START Context" and "* END context *" at the time.
If I use the following code:
open DATA,"c://xxx.txt"; while(<DATA>) { if (/START context/ .. /* End Context */ ) { print unless /(START context |* End context *)/; } }
It prints all the lines (except what is in unless of course) between the first "Start context" and the last "* End context *". I tried to use non-greedy regular expression (.*?) ,but still didn't get the desired result. Can someone please help?
Thanks a lot in advance.

Edit by castaway, added code tags


In reply to I still can't get only the necessary lines from the file. by sashac88

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.