Re: How can I find nested delimiters?

[ignatz]

Using Text::Balanced:

#!/usr/bin/perl -w
use strict;
use Text::Balanced "extract_delimited";

my @queries = (

    qq(QUERY = "SOME QUERY WITH "" (DOUBLE QUOTES)" YEEHA),
    qq(Johnson looked up and said "Pie is tasty!" People in Clarkstown
+ liked ""Pie"".),
    qq("You sir are an ""A\$\@hole""!" The chipmunks were naturally sh
+ocked.),
    qq("""No Way!""" """Way!""")

);

for (@queries) {
    my ($extracted, $remainder, $prefix) = extract_delimited(
        undef,      # defaults to $_
        '"',        # Our chosen delimiter
        '[^"]*',    # Allow for text before the delimiter
        '"');       # Escape delimiter when doubled
    
    # Strip the delimiter since Text::Balanced leaves it in
    $extracted =~ s/^\"(.*)\"$/$1/;
    
    print;
    print "\n\$prefix    = '$prefix'\n";
    print "\$extracted = '$extracted'\n";
    print "\$remainder = '$remainder'\n\n";
    
}

RETURNS:

QUERY = "SOME QUERY WITH "" (DOUBLE QUOTES)" YEEHA
$prefix    = 'QUERY = '
$extracted = 'SOME QUERY WITH "" (DOUBLE QUOTES)'
$remainder = ' YEEHA'

Johnson looked up and said "Pie is tasty!" People in Clarkstown liked 
+""Pie"".
$prefix    = 'Johnson looked up and said '
$extracted = 'Pie is tasty!'
$remainder = ' People in Clarkstown liked ""Pie"".'

"You sir are an ""A$@hole""!" The chipmunks were naturally shocked.
$prefix    = ''
$extracted = 'You sir are an ""A$@hole""!'
$remainder = ' The chipmunks were naturally shocked.'

"""No Way!""" """Way!"""
$prefix    = ''
$extracted = '""No Way!""'
$remainder = ' """Way!"""'

mixing double delimiters