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How to parse Chinese Characters using XML-Simple?

by Anonymous Monk
on Sep 18, 2006 at 10:04 UTC ( #573518=perlquestion: print w/replies, xml ) Need Help??
Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

This question was transcribed from CPAN Forum by grantm

I am a beginner for Perl. I want to write and read some Chinese characters in an XML configuration file, but I failed. Who can tell me how to do it? Thanks!

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Re: How to parse Chinese Characters using XML-Simple?
by grantm (Parson) on Sep 18, 2006 at 10:06 UTC

    You haven't given us much to work with, so hopefully the following examples are enough to get you started:

    Here's a sample XML file which I've called 'greetings.xml' (my 'Chinese' characters came via babelfish so they probably don't make sense):

    <?xml version='1.0' encoding='utf-8'?>
      <para lang="en">Hello World</para>
      <para lang="zh">你好世界</para>

    Here's a short CGI script which reads the file using XML::Simple and outputs some of the data in an HTML page:

    #!/usr/bin/perl use strict; use warnings; use XML::Simple qw(:strict); my $filename = 'greetings.xml'; # full path probably required my $xs = XML::Simple->new( ForceArray => [ 'para' ], KeyAttr => { para => 'lang' }, ); my $doc = $xs->xml_in($filename); binmode STDOUT, ':utf8'; print <<"EOF"; Content-type: text/html; charset=utf-8 <html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8" / +> <title>Test Page</title> </head> <body> <h1>$doc->{para}->{zh}->{content}</h1> </body> </html> EOF

    Of course your script does not need to be a CGI script and does not need to generate HTML. I chose to do it this way so that the output could be viewed in a web browser. If you just run the script from the command-line, you may not be able to read all the characters in your terminal window - it depends if your terminal is set up to handle UTF-8 data.

    The call to binmode(STDOUT, ':utf8') sets the output filehandle to UTF-8. This will suppress warnings about "Wide character in print". You might want to select an alternative output encoding.

    Here's an example of writing XML:

    #!/usr/bin/perl use strict; use warnings; use XML::Simple qw(:strict); use Data::Dumper; my $filename = 'greeting.xml'; my $xs = XML::Simple->new( ForceArray => [ 'para' ], KeyAttr => { para => 'lang' }, RootName => 'doc', ); my $data = { 'para' => { 'en' => { content => 'Hello World' }, 'zh' => { content => "\x{4f60}\x{597d}\x{4e16}\x{754c}" }, }, }; binmode STDOUT, ':utf8'; my $decl = "<?xml version='1.0' encoding='utf-8' standalone='yes'?>"; print $xs->xml_out($data, XMLDecl => $decl);

    In this example, I used the \x{abcd} format to specify Unicode characters. You could type the Chinese characters in directly if your editor supports UTF-8 and you include use utf8; at the top of your script.

    use utf8;
    my $data = {
        'para' => {
            'en' => { content => 'Hello World' },
            'zh' => { content => "你好世界" },

      Where was this question and reply 1 week ago when I had to figure out how to process huge XML files in 7 languages (including chinese and japanese)?!?

      But, yeah, it was all about the binmode ':utf8' line. Once that was set, everything else started behaving properly and I looked like I knew what I was doing.

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