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XML::Writer::Simple

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XML::Writer::Simple

  1. 1. XML::Writer::Simple Alberto Sim˜es o ambs@cpan.org Portuguese Perl Workshop 2008 Alberto Sim˜es ambs@cpan.org o XML::Writer::Simple
  2. 2. Why? XML wasn’t designed to be written manually; So, we normally generate XML; But then, we need to write it (in programs) And we do not want to do that! Alberto Sim˜es ambs@cpan.org o XML::Writer::Simple
  3. 3. Typical Java Code System.out.println(quot; <agenda>quot;); while(contact.next()) { System.out.println(quot;<contact>quot;); System.out.println(quot; <name>quot;+contact.name()+quot;</name>quot;); System.out.println(quot; <email>quot;+contact.mail()+quot;</email>quot;); System.out.println(quot; <tel>quot;+contact.tel()+quot;</tel>quot;); System.out.println(quot;</contact>quot;); } System.out.println(quot; </agenda>quot;); Alberto Sim˜es ambs@cpan.org o XML::Writer::Simple
  4. 4. Possible Perl code print quot; <agenda>nquot;; for $contact (@contacts) { print quot;<contact>nquot;; print quot; <name>$contact->{name}</name>nquot;; print quot; <email>$contact->{mail}</email>nquot;; print quot; <tel>$contact->{tel}</tel>nquot;; print quot;</contact>nquot;; } print quot; </agenda>nquot;; Alberto Sim˜es ambs@cpan.org o XML::Writer::Simple
  5. 5. Using XML::Writer::Simple print agenda( map { contact( name($_->{name}), email($_->{mail}), tel($_->{tel})) } @contacts ) Yeah, stolen from CGI! Alberto Sim˜es ambs@cpan.org o XML::Writer::Simple
  6. 6. What tags to use? we want a function for each tag: easy for HTML! and for XML? what are the valid tags? who tell us? Alberto Sim˜es ambs@cpan.org o XML::Writer::Simple
  7. 7. Full XML::Writer::Simple example use XML::Writer::Simple tags => [qw/agenda contact name email tel/]; print agenda( map { contact( name($_->{name}), email($_->{mail}), tel($_->{tel})) } @contacts ) Alberto Sim˜es ambs@cpan.org o XML::Writer::Simple
  8. 8. Full XML::Writer::Simple example using a DTD use XML::Writer::Simple dtd => quot;agenda.dtdquot;; print agenda( map { contact( name($_->{name}), email($_->{mail}), tel($_->{tel})) } @contacts ) Alberto Sim˜es ambs@cpan.org o XML::Writer::Simple
  9. 9. Full XML::Writer::Simple example using a sample file use XML::Writer::Simple xml => [qw/mycontacts.xml morecontacts.xml/]; print agenda( map { contact( name($_->{name}), email($_->{mail}), tel($_->{tel})) } @contacts ) Alberto Sim˜es ambs@cpan.org o XML::Writer::Simple
  10. 10. And about attributes? they do not need to be declared! just use them as you would under CGI. that is, use as first parameter an hash reference. use XML::Writer::Simple xml => [qw/mycontacts.xml morecontacts.xml/]; print agenda( map { contact( { owner => quot;ambs@di.uminho.ptquot; }, name($_->{name}), email($_->{mail}), tel($_->{tel})) } @contacts ) Alberto Sim˜es ambs@cpan.org o XML::Writer::Simple
  11. 11. And more! PowerTags PowerTags: apply more than one XML tag; follow the Perl data structure; PowerTag by example: ul_li(quot;aquot;,quot;bquot;,quot;cquot;) <ul><li>a</li><li>b</li><li>c</li></ul> ul_li({attr=>quot;valquot;},quot;aquot;,quot;bquot;) <ul attr=quot;valquot;><li>a</li><li>b</li></ul> or yet... table_tr_td( [quot;aquot;,quot;bquot;,quot;cquot;],[quot;dquot;,quot;equot;,quot;fquot;] ); Alberto Sim˜es ambs@cpan.org o XML::Writer::Simple
  12. 12. PowerTags — How to define them? n levels; Can be declared... use XML::Writer::Simple powertags=>[qw/ul_li ol_li/]; Can be created in runtime... powertag(quot;tablequot;,quot;trquot;,quot;tdquot;); Alberto Sim˜es ambs@cpan.org o XML::Writer::Simple
  13. 13. Five Minutes Yet? Alberto Sim˜es ambs@cpan.org o XML::Writer::Simple

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