unable chec whether the word is intermediate or last word in a sentence

suniln has asked for the wisdom of the Perl Monks concerning the following question:

Hi All, I I have following piece of code to fetch intermediate and last node of a string. some of input lines are as follows.

 
C:\abc\dfg
C:\abc\dfg\#@$#@$@

     $key="C:\abc\dfg";
      if( $line =~ /$key\\\S+\\/){ # if this is not end node 
           ($pat)=$line=~/$key\\(\S+)\\/;
      }else{                        # if end node 
           ($last_node)=$line=~/$key\\(.*)/;
      }
[download]

What is wrong in this reg exp... Thanks, Sunil

Comment on unable chec whether the word is intermediate or last word in a sentence Download Code

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Re: unable chec whether the word is intermediate or last word in a sentence by ikegami (Patriarch) on Sep 08, 2010 at 02:11 UTC
You're complicating things. `use Path::Class qw( file dir ); my $base = dir('c:\\abc\\def'); my $node = file('c:\\abc\\def\\ghi\\jkl'); # or dir() print $node->relative($base), "\n";` [download] Path::Class	[reply] [d/l]
Re: unable chec whether the word is intermediate or last word in a sentence by kennethk (Abbot) on Sep 07, 2010 at 22:34 UTC
As I pointed out in Re: need help in building dynamic regular expression, wrap code in `<code>` tags. Read Writeup Formatting Tips and How (Not) To Ask A Question. Update: With your legible post, I can now point out a bug. Your path contains the character sequence `\d`. This is a regular expression metacharacter that means "match any digit". Since you do not intend it in this capacity, you need to escape it before passing it into the regular expression engine. This is usually done with the pair `\Q...\E`. So your code might look like `if( $line =~ /\Q$key\E\\\S+\\/){ # if this is not end node`. This is discussed in Quote and Quote like Operators and in Regexp Quote Like Operators in the document perlop.	[reply] [d/l] [select]
Re: unable chec whether the word is intermediate or last word in a sentence by dasgar (Priest) on Sep 07, 2010 at 22:38 UTC
Have you tried any of the suggestions in the responses to the last time that you posted this question? (unable to differentiate last word and intermediate word in a sentence)	[reply]
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Re: unable chec whether the word is intermediate or last word in a sentence by roboticus (Chancellor) on Sep 07, 2010 at 22:40 UTC
sunlin: What is wrong in this reg exp... It might just be me, but I think it's missing code tags, like so: <c> Your code goes here! </c> Please review Writeup Formatting Tips. ...roboticus	[reply]