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Full Discussion: How to extract a string from a file ignoring new line
Top Forums Shell Programming and Scripting How to extract a string from a file ignoring new line Post 302340592 by suresh_kb211 on Tuesday 4th of August 2009 03:43:51 AM
Old 08-04-2009
How to extract a string from a file ignoring new line
Hi,
sumdays before i had posted a query with same subject.
i got sum great help from great ppl which solved my problem then.
But now there is a small problem with the code that i need the experts help upon.

for parsing a text
Quote:
{:1:abcd :2: me myself
im}{ alone
shell}
$
{scripting: hi
how are you}{hope
ur fine}
$
{im: great}
like this
Quote:
{:1:abcd :2: me myself im}{ aloneshell}
{scripting: hihow are you}{hopeur fine}
{im: great}
where $ had been the delimiter between messages.

i have used the following piece of code
Code:
 
tr "\n" " " < file | tr "$" "\n" > output

Now there is a problem that this $ delimiter also occurs as a part of text like this
Quote:
{:1:abcd :2: me $myself
im}{ alone
shell}
$
{scripting: hi
ho$w are you}{hope
ur fine}
$
{im: great}
as a result i am getting the output like this
Quote:
{:1:abcd :2: me
myself im}{ aloneshell}
{scripting: hiho
w are you}{hopeur fine}
{im: great}
i want the parsed message to be in the format mentioned above, i.e, i want the $ sign to be considered only if it is between messages (like this
} $ { ) and to be left with the text untouched if it is inside the message text.
Will be very grateful if sum1 can provide a solution.

wanted output :
Quote:
{:1:abcd :2: me $myself im}{ aloneshell}
{scripting: hiho$w are you}{hopeur fine}
{im: great}
 

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LEARN ABOUT CENTOS

ppi::token::quotelike

PPI::Token::QuoteLike(3)				User Contributed Perl Documentation				  PPI::Token::QuoteLike(3)

NAME

       PPI::Token::QuoteLike - Quote-like operator abstract base class

INHERITANCE

	 PPI::Token::QuoteLike
	 isa PPI::Token
	     isa PPI::Element

DESCRIPTION

       The "PPI::Token::QuoteLike" class is never instantiated, and simply provides a common abstract base class for the five quote-like operator
       classes. In PPI, a "quote-like" is the set of quote-like things that exclude the string quotes and regular expressions.

       The subclasses of "PPI::Token::QuoteLike" are:

       qw{} - PPI::Token::QuoteLike::Words
       `` - PPI::Token::QuoteLike::Backtick
       qx{} - PPI::Token::QuoteLike::Command
       qr// - PPI::Token::QuoteLike::Regexp
       <FOO> - PPI::Token::QuoteLike::Readline

       The names are hopefully obvious enough not to have to explain what each class is. See their pages for more details.

       You may note that the backtick and command quote-like are treated separately, even though they do the same thing. This is intentional, as
       the inherit from and are processed by two different parts of the PPI's quote engine.

SUPPORT

       See the support section in the main module.

AUTHOR

       Adam Kennedy <adamk@cpan.org>

COPYRIGHT

       Copyright 2001 - 2011 Adam Kennedy.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

       The full text of the license can be found in the LICENSE file included with this module.

perl v5.16.3							    2011-02-26						  PPI::Token::QuoteLike(3)
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