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package HTML::FormatText; # ABSTRACT: Format HTML as plaintext use 5.006_001; use strict; use warnings; # We now use Smart::Comments in place of the old DEBUG framework. # this should be commented out in release versions.... ##use Smart::Comments; use base 'HTML::Formatter'; our $VERSION = '2.16'; # VERSION our $AUTHORITY = 'cpan:NIGELM'; # AUTHORITY # ------------------------------------------------------------------------ sub default_values { ( shift->SUPER::default_values(), lm => 3, # left margin rm => 72, # right margin (actually, maximum text width) ); } # ------------------------------------------------------------------------ sub configure { my ( $self, $hash ) = @_; my $lm = $self->{lm}; my $rm = $self->{rm}; $lm = delete $hash->{lm} if exists $hash->{lm}; $lm = delete $hash->{leftmargin} if exists $hash->{leftmargin}; $rm = delete $hash->{rm} if exists $hash->{rm}; $rm = delete $hash->{rightmargin} if exists $hash->{rightmargin}; my $width = $rm - $lm; if ( $width < 1 ) { warn "Bad margins, ignored" if $^W; return; } if ( $width < 20 ) { warn "Page probably too narrow" if $^W; } for ( keys %$hash ) { warn "Unknown configure option '$_'" if $^W; } $self->{lm} = $lm; $self->{rm} = $rm; $self; } # ------------------------------------------------------------------------ sub begin { my $self = shift; $self->SUPER::begin; $self->{curpos} = 0; # current output position. $self->{maxpos} = 0; # highest value of $pos (used by header underliner) $self->{hspace} = 0; # horizontal space pending flag } # ------------------------------------------------------------------------ sub end { shift->collect("\n"); } # ------------------------------------------------------------------------ sub header_start { my ( $self, $level ) = @_; $self->vspace( 1 + ( 6 - $level ) * 0.4 ); $self->{maxpos} = 0; 1; } # ------------------------------------------------------------------------ sub header_end { my ( $self, $level ) = @_; if ( $level <= 2 ) { my $line; $line = '=' if $level == 1; $line = '-' if $level == 2; $self->vspace(0); $self->out( $line x ( $self->{maxpos} - $self->{lm} ) ); } $self->vspace(1); 1; } # ------------------------------------------------------------------------ sub bullet { my $self = shift; $self->SUPER::bullet( $_[0] . ' ' ); } # ------------------------------------------------------------------------ sub hr_start { my $self = shift; $self->vspace(1); $self->out( '-' x ( $self->{rm} - $self->{lm} ) ); $self->vspace(1); } # ------------------------------------------------------------------------ sub pre_out { my $self = shift; # should really handle bold/italic etc. if ( defined $self->{vspace} ) { if ( $self->{out} ) { $self->nl() while $self->{vspace}-- >= 0; $self->{vspace} = undef; } } my $indent = ' ' x $self->{lm}; my $pre = shift; $pre =~ s/^/$indent/mg; $self->collect($pre); $self->{out}++; } # ------------------------------------------------------------------------ sub out { my $self = shift; my $text = shift; if ( $text =~ /^\s*$/ ) { $self->{hspace} = 1; return; } if ( defined $self->{vspace} ) { if ( $self->{out} ) { $self->nl while $self->{vspace}-- >= 0; } $self->goto_lm; $self->{vspace} = undef; $self->{hspace} = 0; } if ( $self->{hspace} ) { if ( $self->{curpos} + length($text) > $self->{rm} ) { # word will not fit on line; do a line break $self->nl; $self->goto_lm; } else { # word fits on line; use a space $self->collect(' '); ++$self->{curpos}; } $self->{hspace} = 0; } $self->collect($text); my $pos = $self->{curpos} += length $text; $self->{maxpos} = $pos if $self->{maxpos} < $pos; $self->{'out'}++; } # ------------------------------------------------------------------------ sub goto_lm { my $self = shift; my $pos = $self->{curpos}; my $lm = $self->{lm}; if ( $pos < $lm ) { $self->{curpos} = $lm; $self->collect( " " x ( $lm - $pos ) ); } } # ------------------------------------------------------------------------ sub nl { my $self = shift; $self->{'out'}++; $self->{curpos} = 0; $self->collect("\n"); } # ------------------------------------------------------------------------ sub adjust_lm { my $self = shift; $self->{lm} += $_[0]; $self->goto_lm; } # ------------------------------------------------------------------------ sub adjust_rm { shift->{rm} += $_[0]; } 1; __END__ =pod =encoding UTF-8 =head1 NAME HTML::FormatText - Format HTML as plaintext =head1 VERSION version 2.16 =for test_synopsis 1; __END__ =for stopwords latin1 leftmargin lm plaintext rightmargin rm CPAN homepage =head1 SYNOPSIS use HTML::TreeBuilder; $tree = HTML::TreeBuilder->new->parse_file("test.html"); use HTML::FormatText; $formatter = HTML::FormatText->new(leftmargin => 0, rightmargin => 50); print $formatter->format($tree); or, more simply: use HTML::FormatText; my $string = HTML::FormatText->format_file( 'test.html', leftmargin => 0, rightmargin => 50 ); =head1 DESCRIPTION HTML::FormatText is a formatter that outputs plain text. All character attributes (bold/italic/underline) are ignored. Formatting of HTML tables and forms is not implemented. HTML::FormatText is built on L<HTML::Formatter> and documentation for that module applies to this - especially L<HTML::Formatter/new>, L<HTML::Formatter/format_file> and L<HTML::Formatter/format_string>. You might specify the following parameters when constructing the formatter: =over 4 =item I<leftmargin> (alias I<lm>) The column of the left margin. The default is 3. =item I<rightmargin> (alias I<rm>) The column of the right margin. The default is 72. =back =head1 SEE ALSO L<HTML::Formatter> =head1 AUTHORS =over 4 =item * Nigel Metheringham <nigelm@cpan.org> =item * Sean M Burke <sburke@cpan.org> =item * Gisle Aas <gisle@ActiveState.com> =back =head1 COPYRIGHT AND LICENSE This software is copyright (c) 2016 by Nigel Metheringham, 2002-2005 Sean M Burke, 1999-2002 Gisle Aas. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. =cut