use strict;
my $str = '<?
/* This is a comment */
cout << "Hello World"; // prints Hello World
/*
* C++ comments can also
*/
cout << "Hello World";
/* Comment out printing of Hello World:
cout << "Hello World"; // prints Hello World
*/
echo "//This line was not a Comment, but ... ";
echo "http://stackoverflow.com";
echo \'http://stackoverflow.com/you can not match this line\';
array = [\'//\', \'no, you can not match this line!!\']
';
my $regex = qr/(\/\*([^*]|[\r\n]|(\*+([^*\/]|[\r\n])))*\*+\/)|(\/\/.*)/p;
if ( $str =~ /$regex/g ) {
print "Whole match is ${^MATCH} and its start/end positions can be obtained via \$-[0] and \$+[0]\n";
# print "Capture Group 1 is $1 and its start/end positions can be obtained via \$-[1] and \$+[1]\n";
# print "Capture Group 2 is $2 ... and so on\n";
}
# ${^POSTMATCH} and ${^PREMATCH} are also available with the use of '/p'
# Named capture groups can be called via $+{name}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Perl, please visit: http://perldoc.perl.org/perlre.html