Beefy Boxes and Bandwidth Generously Provided by pair Networks
Your skill will accomplish
what the force of many cannot
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
Fellow Monks,

I just ran into the problem of renaming a C++ class throughout many files. The class-name was in camel case (say TheClass) whereas the filenames were lower case (theclass.cc). The bundle came with a Makefile and naturally I wanted to replace the names in there, too.

The renaming of the files was done using mmv.

And for the contents of the files I wanted to use that favorite perl-one-liner:

perl -pi.bak -e 's/theclass/thenewclass/'
And, yes, I could have done this for every possible case, but I wondered whether all that could be done in one line. After reading man perlre and surfing the Monastery I finally found one solution at Re: Regex: Case insensitive search but case sensitive replace.

But, honestly, this can't be it, can it?

I'd appreciate a "I" modifier (or something like that) for regexeps that means "preserve case" very much like the (X)Emacs variable case-replace does it. It would match case insensitive but perform some magic to the replacement in that it would preserve the case of the matched pattern there.

I am well aware that this would be quite hard for replacements that have a different length from the search pattern. Still, even then the cases at some prominent positions (like the first or the last character or characters after a grouping construct, etc) could be figured out.

Is that possible or already existing, or already planned? Am I missing something here?

In expectation of deeper enlightenment and with many thanks...

Regards... Stefan
you begin bashing the string with a +42 regexp of confusion


In reply to Preserve Case in Regexp by stefan k

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!
  • 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, 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, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • Outside of code tags, you may need to use entities for some characters:
            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.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others having an uproarious good time at the Monastery: (7)
    As of 2014-07-28 23:33 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      My favorite superfluous repetitious redundant duplicative phrase is:









      Results (210 votes), past polls