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    copied!<p>This is the sort of job Perl was made for.</p> <pre><code>#! /opt/perl/bin/perl use strict; use warnings; use 5.10.1; { package My::Full; use Moose; use MooseX::Method::Signatures; has 'chapters' =&gt; ( 'is' =&gt; 'rw', 'isa' =&gt; 'ArrayRef[My::Chapter]', 'default' =&gt; sub{[]} ); method add_chapter( Str $name ){ my $chapter = My::Chapter-&gt;new( name =&gt; "$name" ); push @{$self-&gt;chapters}, $chapter; return $chapter; } method latest(){ return $self-&gt;add_chapter('') unless @{$self-&gt;chapters}; return $self-&gt;chapters-&gt;[-1]; } method add_section( Str $name ){ my $latest_chapter = $self-&gt;latest; $latest_chapter-&gt;add_section("$name"); } method add_line( Str $line ){ $self-&gt;latest-&gt;add_line( "$line" ); } method xml(){ my $out = ''; for my $chapter ( @{ $self-&gt;chapters } ){ $out .= $chapter-&gt;xml; } return $out; } } { package My::Chapter; use Moose; use MooseX::Method::Signatures; has 'name' =&gt; ( 'is' =&gt; 'rw', 'isa' =&gt; 'Str', 'required' =&gt; 1 ); has 'sections' =&gt; ( 'is' =&gt; 'rw', 'isa' =&gt; 'ArrayRef[My::Section]', 'default' =&gt; sub{[]} ); method latest(){ return $self-&gt;add_section('') unless @{$self-&gt;sections}; return $self-&gt;sections-&gt;[-1]; } method add_section( Str $name ){ my $section = My::Section-&gt;new(name =&gt; "$name"); push @{$self-&gt;sections}, $section; return $section; } method add_line( Str $line ){ $self-&gt;latest-&gt;add_line( "$line" ); } method xml(){ my $name = $self-&gt;name; $name = '???' unless length $name; my $out = qq'&lt;div role="CHAPTER" title="$name"&gt;\n'; for my $section ( @{ $self-&gt;sections } ){ $out .= $section-&gt;xml; } return $out."&lt;/div&gt;\n"; } } { package My::Section; use Moose; use MooseX::MultiMethods; has 'name' =&gt; ( 'is' =&gt; 'rw', 'isa' =&gt; 'Str', 'required' =&gt; 1 ); has 'lines' =&gt; ( 'is' =&gt; 'rw', 'isa' =&gt; 'ArrayRef[Str]', 'default' =&gt; sub{[]} ); method add_line( Str $line ){ push @{$self-&gt;lines}, "$line" } method xml(){ my $name = $self-&gt;name; $name = '???' unless length $name; my $out = qq' &lt;div role="SECTION" title="$name"&gt;\n'; for my $line ( @{ $self-&gt;lines } ){ $out .= " &lt;p&gt;$line&lt;/p&gt;\n"; } return $out." &lt;/div&gt;\n"; } } </code></pre> <h3>The main loop:</h3> <pre><code>my $full = My::Full-&gt;new; while( my $line = &lt;&gt; ){ chomp $line; given( $line ){ when( /^chap(?:ter)?\s++(.+)/i ){ $full-&gt;add_chapter($1); } when( /^sec(?:tion)?\s++(.+)/i ){ $full-&gt;add_section($1); } default{ $full-&gt;add_line($line); } } } say $full-&gt;xml </code></pre> <p>&nbsp;</p> <pre><code>&lt;div role="CHAPTER" title="check"&gt; &lt;div role="SECTION" title="check"&gt; &lt;p&gt;this is something&lt;/p&gt; &lt;p&gt;this is another&lt;/p&gt; &lt;/div&gt; &lt;div role="SECTION" title="check"&gt; &lt;p&gt;take some xxx&lt;/p&gt; &lt;p&gt;do yyy&lt;/p&gt; &lt;p&gt;and some...&lt;/p&gt; &lt;/div&gt; &lt;/div&gt; &lt;div role="CHAPTER" title="check"&gt; &lt;div role="SECTION" title="???"&gt; &lt;p&gt;we created...&lt;/p&gt; &lt;/div&gt; &lt;/div&gt; </code></pre>
 

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