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Variable will not stay shared

orange
User

Oct 7, 2013, 1:16 AM

Post #1 of 3 (2548 views)

Variable will not stay shared	Can't Post

I have a problem with html parsing:

Code

sub parseHTML 
{ 
... 
 
 
my $string=""; 
 
 
my $p = HTML::Parser->new( 
                start_h => [\&start, "tag, attr"], 
                text_h => [\&text_rtn, 'dtext'], 
                ); 
 open(my $fh, "<:utf8", $file) || die; 
 $p->unbroken_text( 1 ); 
 $p->parse_file($fh); 
 
sub text_rtn { 
    foreach (@_) { 
	if( $_ =~ /^(\s*)$/ || $_ =~ /^\W\W\W/  ){next;}	 
	$_ =~ tr/\r\n/ /s;  # tr/\000-\040/ /s; 
	   $string = $string . $_ . "\n" if $_; 
	   } 
}	    
 
 
... 
} 
Code  
 
 
error is "Variable $string will not stay shared" 
 
I have tried using 'anonymous sub' but it didn't work.  
can someone please help? 
thanks.

BillKSmith
Veteran

Oct 7, 2013, 5:39 AM

Post #2 of 3 (2543 views)

Re: [orange] Variable will not stay shared [In reply to]	Can't Post

I assume that you intend $string to be a lexical variable shared between only these two subroutines. Nesting the subroutine definitions does not do this. Instead, make a new block which contains both subroutines and their shared variables.

Code

{ 
    my $string = ''; 
    sub parseHTML { 
        #... 
        my $p = HTML::Parser->new( 
            start_h => [ \&start,    "tag, attr" ], 
            text_h  => [ \&text_rtn, 'dtext' ], 
        ); 
        open( my $fh, "<:utf8", $file ) || die; 
        $p->unbroken_text(1); 
        $p->parse_file($fh); 
     
     
        #... 
    } 
    sub text_rtn { 
        foreach (@_) { 
            if ( $_ =~ /^(\s*)$/ || $_ =~ /^\W\W\W/ ) { next; } 
            $_ =~ tr/\r\n/ /s;    # tr/\000-\040/ /s; 
            $string = $string . $_ . "\n" if $_; 
        } 
    } 
}

Good Luck,
Bill

orange
User

Oct 7, 2013, 6:09 AM

Post #3 of 3 (2541 views)

Re: [BillKSmith] Variable will not stay shared [In reply to]	Can't Post

yes.
that works. thanks.

(This post was edited by orange on Oct 7, 2013, 6:10 AM)

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