I am trying to parse an XML file, with Perl regex (I know about the XML::Parse and ::Twig modules, but using regex is a requirement).

My XML document looks like this: 

<?xml version="1.0"?>
<t_volume>
        <info>
            <info_name>FZGA34177.b1</info_name>
            <center_project>4085729</center_project>
            <base_file>SETARIA_ITALICA/JGI/fasta/FZGA34177.b1.fasta</b
+ase_file>
            <it_size>35000</it_size>
            <it_stdev>3500</it_stdev>
            <plate_id>357</plate_id>
            <program_id>KB 1.3.0</program_id>
            <seq_lib_id>FZGA</seq_lib_id>
            <project_id>32913</project_id>
            <info_archive>
                <ti>2167749207</ti>
                <taxid>4555</taxid>
        <basecall_length>899</basecall_length>
                <state>active</state>
            </info_archive>
        </info>
<info>
            <info_name>FZGA34177.b1</info_name>
            <center_project>4085729</center_project>
            <base_file>SETARIA_ITALICA/JGI/fasta/FZGA34177.b1.fasta</b
+ase_file>
            <it_size>35000</it_size>
            <it_stdev>3500</it_stdev>
            <plate_id>357</plate_id>
            <program_id>KB 1.3.0</program_id>
            <seq_lib_id>FZGA</seq_lib_id>
            <project_id>32913</project_id>
            <info_archive>
                <ti>2167749207</ti>
                <taxid>4555</taxid>
        <basecall_length>899</basecall_length>
                <state>active</state>
            </info_archive>
        </info>
<info>
            <info_name>FZGA34177.b1</info_name>
            <center_project>4085729</center_project>
            <base_file>SETARIA_ITALICA/JGI/fasta/FZGA34177.b1.fasta</b
+ase_file>
            <it_size>35000</it_size>
            <it_stdev>3500</it_stdev>
            <plate_id>357</plate_id>
            <program_id>KB 1.3.0</program_id>
            <seq_lib_id>FZGA</seq_lib_id>
            <project_id>32913</project_id>
            <info_archive>
                <ti>2167749207</ti>
                <taxid>4555</taxid>
        <basecall_length>899</basecall_length>
                <state>active</state>
            </info_archive>
        </info>
<t_volume>

[download]

I have written the following code so far: 

#!/usr/bin/perl
my @files = glob('/abc*/info.xml')

foreach my $xmlname(@xml)
{

    open XML, $xmlname or die "Cannot open $xmlname for reading: $!\n"
+;
    
    while($line=<XML>){
    
    if($line=~ /\<info_name\>/i){
        $info_name = $line =~ /\<info_name\>(\S+)\<\/info_name\>/i;
    }
    if($line=~ /\<it_size\>/i){
        $it_size = $line =~ /\<it_size\>(\S+)\<\/it_size\>/i;
    }
    
    }
    print "$info_name : $it_size\n";
}

[download]

I want to get these values as a hash, with the data in <info_name> as key and that in <it_size> as value??

How to go about creating a hash for this??

Thanks in advance!

In reply to Parse XML with Perl regex by ad23

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