Hi, I have a doubt about this. Lets take this scenario. The Input data is as follows: header { subheader1 { field1 : value field2 : value field3: value } subheader2 { subheader3 { field4 : value field5 : value field6: value } subheader4 { field7 : value field8 : value field9: value } } } header { subheader1 { field1 : value1 field2 : value1 field3: value1 } subheader2 { subheader3 { field4 : value1 field5 : value1 field6: value1 } subheader4 { field7 : value1 field8 : value1 field9: value1 } } } The output will be : field1,field2,field3,field4,field5,field6,field7,field8,field9 value,value,value,value,value,value,value,value,value value1,value1,value1,value1,value1,value1,value1,value1,value1 Here main problem is that: The value os field2 or field3 may be missing then the output may be: field1,field2,field3,field4,field5,field6,field7,field8,field9 value,value,value,,value,value,value,value,value value1,value1,value1,value1,value1,value1,,value1,value1 In the above output The first line field4 is missing and in the second line field7 is missing How Can I get the output can you please help me.

In reply to Re: String matching and Regular Expressions by kallol.chakra
in thread String matching and Regular Expressions by root

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.