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Full Discussion: How to substitute brackets in the beginning of string in perl?
Top Forums Shell Programming and Scripting How to substitute brackets in the beginning of string in perl? Post 302345737 by vanitham on Thursday 20th of August 2009 05:42:58 AM
Old 08-20-2009
How to substitute brackets in the beginning of string in perl?
Hi,

I have a string like this user can specify different query sets that is why "or" is mentioned:

Code:
$string="[[:<:]](";

or

$string="[[:<:]]((";

or

$string="[[:<:]](((";

or

$string="[[:>:]](((((";


What i have to do is substitute these brackets in the beginning.

I tried like this:

Code:
if($string=~/\[\[:<:\]\]\(/)
{
  $string=~s/\[\[:<:\]\]\(/\(\[\[:<:\]\]/g;
}
elsif($string=~/[[:<:]]\(\(/)
{
   #same here
}
elsif($string=~/[[:<:]]\(\(\(/)
{
  #same here
}
elsif($string=~/[[:<:]]\(\(\(\(/)
{
  #same here
}
elsif($string=~/[[:<:]]\(\(\(\(\(/)
{
  #same here
}

If statement i can use but i will be not be sure how many brackets will be there to substitute in the beginning?

I have to avoid this if loop!!

The output should be like this.

Code:
$string="\([[:<:]]";

or

$string="\(\([[:<:]]";

or

$string="\(\(\([[:<:]]";

etc like this all these different string examples are based on the users query sets that is why i just mentioned or such that user can give either like first string ( [[:<:]]\( ) or like second string ( [[:<:]]\(\( ).

How can i put or substitute brackets in the beginning of the sting?

Any ideas???

Regards
Vanitha
 

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LEARN ABOUT SUNOS

wsreg_query_get_version

wsreg_query_set_version(3WSREG) 		    Product Install Registry Library Functions			   wsreg_query_set_version(3WSREG)

NAME

       wsreg_query_set_version, wsreg_query_get_version - set or get the version of a query

SYNOPSIS

       cc [flag ...]  file ... -lwsreg [library ...]
       #include <wsreg.h>

       int wsreg_query_set_version(Wsreg_query *query, const char *version);

       char *wsreg_query_get_version(const Wsreg_query *query);

DESCRIPTION

       The  wsreg_query_set_version()  function  sets  the version specified by version in the query specified by query.  If a version has already
       been set in the specified query, the resources associated with the previously set version are released.

       The wsreg_query_get_version() function gets the version string from the query specified by query.  The resulting string is not a  copy  and
       must not be released by the caller.

RETURN VALUES

       The wsreg_query_set_version() function returns a non-zero value if the version was set correctly; otherwise 0 is returned.

       The  wsreg_query_get_version()  function returns the version from the specified query.  If no version has been set, NULLt is returned.  The
       resulting version string is not a copy and must not be released by the caller.

USAGE

       The query identifies fields used to search for a specific component in the product install registry.  By specifying the version, the compo-
       nent search is narrowed to all components in the product install registry that have the specified version.

       Other fields can be specified in the same query to further narrow the search.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       wsreg_get(3WSREG), wsreg_initialize(3WSREG), wsreg_query_create(3WSREG), attributes(5)

SunOS 5.10							    22 Sep 2000 				   wsreg_query_set_version(3WSREG)
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