use strict;
my $str = '---
---
85.039 42.52 42.519 42.52 re
W--
---
---
127.559 42.52 42.519 42.52 re
W--
---
---
170.078 42.52 42.52 42.52 re
W--
---
---
BT
---
Text
---
ET
---
---
170.078 42.52 42.52 42.52 re
W--
---
---
127.559 42.52 42.519 42.52 re
W--
---
---
BT
---
Text
---
ET
---
---
170.078 42.52 42.52 42.52 re
W--
---
---
BT
---
Text
---
ET';
my $regex = qr/# Clipping Rectangle
(?<x>\b[-0-9\.]+\b)(\s)
(?<y>\b[-0-9\.]+\b)(\s)
(?<width>\b[-0-9\.]+\b)(\s)
(?<height>\b[-0-9\.]+\b)(\s)
(re\nW)
(.*?)
# Text
(BT)
(?<text>.*?)
(ET)/xsp;
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