Your syntax and data structure looks very much like an
s-expression (or Lisp list) with some minor differences:
like braces instead of parentheses.
The following is a partial solution to your question
after massaging the input a little bit. First, braces
are replaced by parentheses. Then, all underscores
have been replaced by hyphens (this is due to a current
limitation of the module used below).
And the input file looks like this:
(chart ((1 ((title title-1) (xlable X-lab) (ylable Y-lab) (description
+ desc1) (type line) (series ((1 ((x-data (1 2 3 4 5)) (y-data (20 90
+60 50 30))))))))))
There is in CPAN a quite recent module named
Data::SExpression (and there is some problem
with the current version 0.33 and so I recommend
installing the former — for example, say
install NELHAGE/Data-SExpression-0.32.tar.gz
in the CPAN shell
instead of just install Data::SExpression).
This module is able to parse the input above.
But that does not mean it would turn into
a handy data structure. Instead it is all composed
of array refs that made things quite difficult
to access.
[
"chart",
[
[
1,
[
["title", "title-1"],
["xlable", "X-lab"],
["ylable", "Y-lab"],
["description", "desc1"],
["type", "line"],
[
"series",
[
[
1,
[["x-data", [1, 2, 3, 4, 5]], ["y-data", [20, 90, 60, 50
+, 30]]],
],
],
],
],
],
],
]
Making some assumptions on your data, I wrote some code to
turn that into a nice hash of hashes. Like this:
{
chart => {
description => "desc1",
series => { "x-data" => [1, 2, 3, 4, 5],
"y-data" => [20, 90, 60, 50, 30] },
title => "title-1",
type => "line",
xlable => "X-lab",
ylable => "Y-lab",
},
}
and then your request
Now i want to get the value of x_data (1 2 3 4 5) and y_data (20 90 60 50 30)
turned into a trivial thing:
use Data::Dump qw(dump);
print "x_data: ", dump($keyed_list->{chart}->{series}->{"x-data"}), "\
+n";
print "y_data: ", dump($keyed_list->{chart}->{series}->{"y-data"}), "\
+n";
# which outputs
#x_data: [1, 2, 3, 4, 5]
#y_data: [20, 90, 60, 50, 30]
The entire code which I experimented against your data is:
| 