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Full Discussion: range patterns in awk
Top Forums Shell Programming and Scripting range patterns in awk Post 302481916 by ghoda2_10 on Monday 20th of December 2010 07:25:34 AM
Old 12-20-2010
range patterns in awk
Hi All,

I am new to awk command and I had a question in using it.

I want to filter a code file and print specific functions (that contain menu word in the function name).

for example, if the file has:

Code:
function menu1()
{
}
 
function f2()
{
}
 
function menu3()
{
}

so I want the command to print the first and third functions only.
I wrote the below command using range patterns:

Code:
awk '
/.*function.*menu\(\)/,/^ *\} *$/
'

but there is a problem, the above one prints the function until the first "}" even if it is not the ending of the function , is there a way to fix this??
Last edited by radoulov; 12-20-2010 at 08:31 AM.. Reason: Code tags, please!
 

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LEARN ABOUT DEBIAN

tree::simple::visitor::postordertraversal

Tree::Simple::Visitor::PostOrderTraversal(3pm)		User Contributed Perl Documentation	    Tree::Simple::Visitor::PostOrderTraversal(3pm)

NAME

       Tree::Simple::Visitor::PostOrderTraversal - A Visitor for post-order traversal a Tree::Simple hierarchy

SYNOPSIS

	 use Tree::Simple::Visitor::PostOrderTraversal;

	 # create an visitor
	 my $visitor = Tree::Simple::Visitor::PostOrderTraversal->new();

	 # pass our visitor to the tree
	 $tree->accept($visitor);

	 # print our results
	 print join ", " => $visitor->getResults();

	 # this will print this:
	 #   1.1.1 1.1 1.2 1 2.1 2 3.1 3
	 # assuming your tree is like this:
	 #   1
	 #     1.1
	 #	 1.1.1
	 #     1.2
	 #   2
	 #     2.1
	 #   3
	 #     3.1

DESCRIPTION

       Post-order traversal is a variation of the depth-first traversal in which the sub-tree's are processed before the parent. It is another
       alternative to Tree::Simple's "traverse" method which implements a depth-first, pre-order traversal.

METHODS

       new There are no arguments to the constructor the object will be in its default state. You can use the "setNodeFilter" method to customize
	   its behavior.

       includeTrunk ($boolean)
	   Based upon the value of $boolean, this will tell the visitor to include the trunk of the tree in the traversal as well.

       setNodeFilter ($filter_function)
	   This method accepts a CODE reference as its $filter_function argument and throws an exception if it is not a code reference. This code
	   reference is used to filter the tree nodes as they are collected. This can be used to customize output, or to gather specific
	   information from a more complex tree node. The filter function should accept a single argument, which is the current Tree::Simple
	   object.

       visit ($tree)
	   This is the method that is used by Tree::Simple's "accept" method. It can also be used on its own, it requires the $tree argument to be
	   a Tree::Simple object (or derived from a Tree::Simple object), and will throw and exception otherwise.

       getResults
	   This method returns the accumulated results of the application of the node filter to the tree.

BUGS

       None that I am aware of. Of course, if you find a bug, let me know, and I will be sure to fix it.

CODE COVERAGE

       See the CODE COVERAGE section in Tree::Simple::VisitorFactory for more inforamtion.

SEE ALSO

       These Visitor classes are all subclasses of Tree::Simple::Visitor, which can be found in the Tree::Simple module, you should refer to that
       module for more information.

AUTHOR

       stevan little, <stevan@iinteractive.com>

COPYRIGHT AND LICENSE

       Copyright 2004, 2005 by Infinity Interactive, Inc.

       <http://www.iinteractive.com>

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

perl v5.10.1							    2005-07-14			    Tree::Simple::Visitor::PostOrderTraversal(3pm)
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