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package XML::Writer::Simpler; |
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use 5.006; |
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use strict; |
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use warnings FATAL => 'all'; |
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=head1 NAME |
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XML::Writer::Simpler - Perl extension for writing XML data |
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=head1 SYNOPSIS |
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=head1 DESCRIPTION |
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This is a convenience module for writing XML. It's a subclass of |
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C, with a single convenience method so you usually won't have |
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to deal with remembering to call C, C, and |
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C. |
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This module is lies somewhere in between L and |
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L. It nests calls like XML::Generator, but allows for |
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arbitrary subroutine calls as well. It requires fewer braces in general than |
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XML::Writer::Nest. |
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This module is a subclass of XML::Writer, so if you can't do what you want to |
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with the C method, you can fall back to the methods native to XML::Writer. |
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=cut |
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use base qw/Exporter XML::Writer/; |
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use vars qw/@EXPORT_OK $VERSION/; |
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use Carp; |
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$VERSION = '0.11'; |
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# package vars for ref to output file |
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my $out; |
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=head1 METHODS |
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=over 4 |
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=item * C |
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XML::Writer::Simpler->new(%params); |
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Creates the object. Acceptable hash keys for %params are the same as those |
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for L. This module assumes everything is UTF-8, so you can |
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omit that if you like; it will be provided for you. |
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=cut |
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sub new { |
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my ($class, %params) = @_; |
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$params{ENCODING} ||= 'utf-8'; |
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my $self = $class->SUPER::new(%params); |
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$out = &{$self->{GETOUTPUT}}; |
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$self->xmlDecl('UTF-8') if $params{ENCODING} eq 'utf-8'; |
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bless $self, $class; |
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return $self; |
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} |
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=item * tag |
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$xml->tag($tagName, [ \@attributes ], $content); |
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If C<$content> is a plain scalar value, will output the tag with that content. |
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If no content is provided, will output an empty tag: |
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$xml->tag('example', 'foo'); # foo |
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$xml->tag('example'); # |
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You may also pass an array ref of key/value pairs that wind up as attributes: |
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# foo |
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$xml->tag('example', [bar => 'baz'], 'foo'); |
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# |
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$xml->tag('example', [bar => 'baz']); |
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If C<$content> is a code ref, this will start the tag, execute the code ref, |
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then close the tag. This allows arbitrarily deep/complex tag structures. |
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# Text 1Text 2 |
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$xml->tag('example1', sub { |
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$xml->tag('exA', 'Text 1'); |
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$xml->tag('exB', 'Text 2'); |
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}); |
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# 100101102 |
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$xml->('example2', sub { |
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for (my $tag = 'a', my $num = 100; $num < 103; $tag++, $num++) { |
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$xml->($tag, $num); |
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} |
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}); |
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These different styles of calling can be combined in a number of ways to |
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output basically whatever you like. |
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# text z |
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$xml->tag('example3', [id => 'ex3'], 'text z'); |
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# more text |
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$xml->tag('example4', [id => 'ex4'], sub { |
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$xml->tag('exZ', 'more text'); |
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}); |
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=cut |
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sub tag { |
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my $self = shift; |
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my $tagName = shift; # name of tag, required |
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my $content = pop; # might be text or a coderef |
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my $aref = shift; # attribute arrayref |
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croak unless $tagName; |
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my @attrs; |
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# if we just have a tag name and an array ref, then the thing we popped |
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# off of @_ might actually be the attribute array ref |
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if (ref $content eq 'ARRAY') { |
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$aref = $content; |
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undef($content); |
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} |
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@attrs = @$aref if ref $aref eq 'ARRAY'; |
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if (ref $content eq 'CODE') { |
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$self->startTag($tagName, @attrs); |
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$content->(); |
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$self->endTag($tagName); |
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} else { |
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if ($content) { |
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$self->dataElement($tagName, $content, @attrs); |
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} else { |
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$self->emptyTag($tagName, @attrs); |
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} |
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} |
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return; |
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} |
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1; |
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__END__ |