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package SL::Template::LaTeX;
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use parent qw(SL::Template::Simple);
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use strict;
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use Carp;
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use Cwd;
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use English qw(-no_match_vars);
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use File::Basename;
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use File::Path;
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use File::Spec;
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use File::Temp;
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use HTML::Entities ();
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use List::MoreUtils qw(any);
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use Scalar::Util qw(blessed);
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use Unicode::Normalize qw();
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use SL::DB::Default;
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use SL::System::Process;
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my %text_markup_replace = (
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b => 'textbf',
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i => 'textit',
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u => 'underline',
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);
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sub _format_text {
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my ($self, $content, %params) = @_;
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$content = $::locale->quote_special_chars('Template/LaTeX', $content);
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# Allow some HTML markup to be converted into the output format's
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# corresponding markup code, e.g. bold or italic.
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foreach my $key (keys(%text_markup_replace)) {
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my $new = $text_markup_replace{$key};
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$content =~ s/\$\<\$${key}\$\>\$(.*?)\$<\$\/${key}\$>\$/\\${new}\{$1\}/gi;
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}
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$content =~ s/[\x00-\x1f]//g;
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return $content;
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}
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my %html_replace = (
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'</p>' => "\\par\n",
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'<ul>' => "\\begin{itemize} ",
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'</ul>' => "\\end{itemize} ",
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'<ol>' => "\\begin{enumerate} ",
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'</ol>' => "\\end{enumerate} ",
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'<li>' => "\\item ",
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'</li>' => " ",
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'<b>' => "\\textbf{",
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'</b>' => "}",
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'<strong>' => "\\textbf{",
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'</strong>' => "}",
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'<i>' => "\\textit{",
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'</i>' => "}",
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'<em>' => "\\textit{",
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'</em>' => "}",
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'<u>' => "\\underline{",
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'</u>' => "}",
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'<s>' => "\\sout{",
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'</s>' => "}",
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'<sub>' => "\\textsubscript{",
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'</sub>' => "}",
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'<sup>' => "\\textsuperscript{",
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'</sup>' => "}",
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'<br/>' => "\\newline ",
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'<br>' => "\\newline ",
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);
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sub _lb_to_space {
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my ($to_replace) = @_;
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my $vspace = '\vspace*{0.5cm}';
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return $vspace x (length($to_replace) / length($html_replace{'<br>'}));
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}
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sub _format_html {
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my ($self, $content, %params) = @_;
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$content =~ s{ \r+ }{}gx;
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$content =~ s{ \n+ }{ }gx;
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$content =~ s{ (?:\ |\s)+ }{ }gx;
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$content =~ s{ (?:\ |\s)+$ }{}gx;
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$content =~ s{ (?: <br/?> )+$ }{}gx;
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$content =~ s{ <ul>\s*</ul> | <ol>\s*</ol> }{}igx;
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$content =~ s{ (?: <p>\s*</p>\s* )+ \Z }{}imgx;
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my @parts = grep { $_ } map {
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if (substr($_, 0, 1) eq '<') {
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s{ +}{}g;
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$html_replace{$_} || '';
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} else {
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$::locale->quote_special_chars('Template/LaTeX', HTML::Entities::decode_entities($_));
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}
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} split(m{(<.*?>)}x, $content);
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$content = join '', @parts;
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$content =~ s{ (?: [\n\s] | \\newline )+ $ }{}gx; # remove line breaks at the end of the text
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$content =~ s{ ^ \s+ }{}gx; # remove white space at the start of the text
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$content =~ s{ ^ ( \\newline \ )+ }{ _lb_to_space($1) }gxe; # convert line breaks at the start of the text to vertical space
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$content =~ s{ ( \n\n+ ) ( \\newline \ )+ }{ $1 . _lb_to_space($2) }gxe; # convert line breaks at the start of a paragraph to vertical space
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$content =~ s{ ( \\end\{ [^\}]+ \} \h* ) ( \\newline \ )+ }{ $1 . _lb_to_space($2) }gxe; # convert line breaks after LaTeX environments like lists to vertical space
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$content =~ s{ ^ \h+ \\newline }{\\newline}gmx;
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$content =~ s{ \n\n \h* \\newline \h* }{\n\n}gmx;
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return $content;
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}
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my %formatters = (
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html => \&_format_html,
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text => \&_format_text,
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);
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sub new {
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my $type = shift;
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my $self = $type->SUPER::new(@_);
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return $self;
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}
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sub format_string {
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my ($self, $content, $variable) = @_;
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my $formatter =
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$formatters{ $self->{variable_content_types}->{$variable} }
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// $formatters{ $self->{default_content_type} }
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// $formatters{ text };
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$content =~ s{[^\p{Print}\n]|\p{Cf}}{}g;
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$variable =~ s{[^\p{Print}\n]|\p{Cf}}{}g;
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return $formatter->($self, $content, variable => $variable);
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}
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sub parse_foreach {
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my ($self, $var, $text, $start_tag, $end_tag, @indices) = @_;
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my ($form, $new_contents) = ($self->{"form"}, "");
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my $ary = $self->_get_loop_variable($var, 1, @indices);
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my $sum = 0;
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my $current_page = 1;
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my ($current_line, $corrent_row) = (0, 1);
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my $description_array = $self->_get_loop_variable("description", 1);
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my $longdescription_array = $self->_get_loop_variable("longdescription", 1);
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my $linetotal_array = $self->_get_loop_variable("linetotal", 1);
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$form->{TEMPLATE_ARRAYS}->{cumulatelinetotal} = [];
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# forech block hasn't given us an array. ignore
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return $new_contents unless ref $ary eq 'ARRAY';
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for (my $i = 0; $i < scalar(@{$ary}); $i++) {
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# do magic markers
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$form->{"__first__"} = $i == 0;
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$form->{"__last__"} = ($i + 1) == scalar(@{$ary});
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$form->{"__odd__"} = (($i + 1) % 2) == 1;
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$form->{"__counter__"} = $i + 1;
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#everything from here to the next marker should be removed after the release of 2.7.0
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if ( ref $description_array eq 'ARRAY'
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&& scalar @{$description_array} == scalar @{$ary}
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&& $self->{"chars_per_line"} != 0)
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{
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my $lines = int(length($description_array->[$i]) / $self->{"chars_per_line"});
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my $lpp;
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$description_array->[$i] =~ s/(\\newline\s?)*$//;
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$lines++ while ($description_array->[$i] =~ m/\\newline/g);
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$lines++;
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if ($current_page == 1) {
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$lpp = $self->{"lines_on_first_page"};
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} else {
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$lpp = $self->{"lines_on_second_page"};
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}
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# Yes we need a manual page break -- or the user has forced one
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if ( (($current_line + $lines) > $lpp)
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|| ($description_array->[$i] =~ /<pagebreak>/)
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|| ( ref $longdescription_array eq 'ARRAY'
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&& $longdescription_array->[$i] =~ /<pagebreak>/)) {
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my $pb = $self->{"pagebreak_block"};
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# replace the special variables <%sumcarriedforward%>
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# and <%lastpage%>
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my $psum = $form->format_amount($self->{"myconfig"}, $sum, 2);
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$pb =~ s/$self->{tag_start_qm}sumcarriedforward$self->{tag_end_qm}/$psum/g;
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$pb =~ s/$self->{tag_start_qm}lastpage$self->{tag_end_qm}/$current_page/g;
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my $new_text = $self->parse_block($pb, (@indices, $i));
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return undef unless (defined($new_text));
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$new_contents .= $new_text;
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$current_page++;
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$current_line = 0;
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}
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$current_line += $lines;
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}
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#stop removing code here.
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if ( ref $linetotal_array eq 'ARRAY'
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&& $i < scalar(@{$linetotal_array})) {
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$sum += $form->parse_amount($self->{"myconfig"}, $linetotal_array->[$i]);
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}
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$form->{TEMPLATE_ARRAYS}->{cumulatelinetotal}->[$i] = $form->format_amount($self->{"myconfig"}, $sum, 2);
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my $new_text = $self->parse_block($text, (@indices, $i));
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return undef unless (defined($new_text));
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$new_contents .= $start_tag . $new_text . $end_tag;
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}
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map({ delete($form->{"__${_}__"}); } qw(first last odd counter));
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return $new_contents;
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}
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sub find_end {
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my ($self, $text, $pos, $var, $not) = @_;
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my $tag_start_len = length $self->{tag_start};
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my $depth = 1;
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$pos = 0 unless ($pos);
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while ($pos < length($text)) {
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$pos++;
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next if (substr($text, $pos - 1, length($self->{tag_start})) ne $self->{tag_start});
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my $keyword_pos = $pos - 1 + $tag_start_len;
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if ((substr($text, $keyword_pos, 2) eq 'if') || (substr($text, $keyword_pos, 7) eq 'foreach')) {
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$depth++;
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} elsif ((substr($text, $keyword_pos, 4) eq 'else') && (1 == $depth)) {
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if (!$var) {
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$self->{"error"} =
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"$self->{tag_start}else$self->{tag_end} outside of "
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. "$self->{tag_start}if$self->{tag_end} / "
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. "$self->{tag_start}ifnot$self->{tag_end}.";
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return undef;
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}
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my $block = substr($text, 0, $pos - 1);
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substr($text, 0, $pos - 1) = "";
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$text =~ s!^$self->{tag_start_qm}.+?$self->{tag_end_qm}!!;
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$text = $self->{tag_start} . 'if' . ($not ? " " : "not ") . $var . $self->{tag_end} . $text;
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return ($block, $text);
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} elsif (substr($text, $keyword_pos, 3) eq 'end') {
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$depth--;
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if ($depth == 0) {
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my $block = substr($text, 0, $pos - 1);
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substr($text, 0, $pos - 1) = "";
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$text =~ s!^$self->{tag_start_qm}.+?$self->{tag_end_qm}!!;
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return ($block, $text);
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}
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}
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}
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return undef;
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}
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sub parse_block {
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$main::lxdebug->enter_sub();
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my ($self, $contents, @indices) = @_;
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my $new_contents = "";
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while ($contents ne "") {
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my $pos_if = index($contents, $self->{tag_start} . 'if');
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my $pos_foreach = index($contents, $self->{tag_start} . 'foreach');
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if ((-1 == $pos_if) && (-1 == $pos_foreach)) {
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$new_contents .= $self->substitute_vars($contents, @indices);
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last;
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}
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if ((-1 == $pos_if) || ((-1 != $pos_foreach) && ($pos_if > $pos_foreach))) {
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$new_contents .= $self->substitute_vars(substr($contents, 0, $pos_foreach), @indices);
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substr($contents, 0, $pos_foreach) = "";
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if ($contents !~ m|^($self->{tag_start_qm}foreach (.+?)$self->{tag_end_qm})|) {
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$self->{"error"} = "Malformed $self->{tag_start}foreach$self->{tag_end}.";
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$main::lxdebug->leave_sub();
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return undef;
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}
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my $var = $2;
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substr($contents, 0, length($1)) = "";
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my $block;
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($block, $contents) = $self->find_end($contents);
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if (!$block) {
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$self->{"error"} = "Unclosed $self->{tag_start}foreach$self->{tag_end}." unless ($self->{"error"});
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$main::lxdebug->leave_sub();
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return undef;
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}
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my $new_text = $self->parse_foreach($var, $block, "", "", @indices);
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if (!defined($new_text)) {
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$main::lxdebug->leave_sub();
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return undef;
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}
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$new_contents .= $new_text;
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} else {
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if (!$self->_parse_block_if(\$contents, \$new_contents, $pos_if, @indices)) {
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$main::lxdebug->leave_sub();
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return undef;
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}
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}
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}
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$main::lxdebug->leave_sub();
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return $new_contents;
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}
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sub parse_first_line {
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my $self = shift;
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my $line = shift || "";
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if ($line =~ m/([^\s]+)set-tag-style([^\s]+)/) {
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if ($1 eq $2) {
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$self->{error} = "The tag start and end markers must not be equal.";
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return 0;
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}
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$self->set_tag_style($1, $2);
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}
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return 1;
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}
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sub _parse_config_option {
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my $self = shift;
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my $line = shift;
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$line =~ s/^\s*//;
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$line =~ s/\s*$//;
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my ($key, $value) = split m/\s*=\s*/, $line, 2;
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if ($key eq 'tag-style') {
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$self->set_tag_style(split(m/\s+/, $value, 2));
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}
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if ($key eq 'use-template-toolkit') {
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$self->set_use_template_toolkit($value);
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}
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}
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sub _parse_config_lines {
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my $self = shift;
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my $lines = shift;
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my ($comment_start, $comment_end) = ("", "");
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if (ref $self eq 'SL::Template::LaTeX') {
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$comment_start = '\s*%';
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} elsif (ref $self eq 'SL::Template::HTML') {
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$comment_start = '\s*<!--';
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$comment_end = '(?:--)?>\s*';
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} else {
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$comment_start = '\s*\#';
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}
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my $num_lines = scalar @{ $lines };
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my $i = 0;
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while ($i < $num_lines) {
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my $line = $lines->[$i];
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if ($line !~ m/^${comment_start}\s*config\s*:(.*?)${comment_end}$/i) {
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$i++;
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next;
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}
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$self->_parse_config_option($1);
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splice @{ $lines }, $i, 1;
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$num_lines--;
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}
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}
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sub _embed_file_directive {
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my ($self, $file) = @_;
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# { source => $xmlfile,
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# name => 'factur-x.xml',
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# description => $::locale->text('Factur-X/ZUGFeRD invoice'), }
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my $file_name = blessed($file->{source}) && $file->{source}->can('filename') ? $file->{source}->filename : "" . $file->{source}->filename;
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my $embed_name = $file->{name} // $file_name;
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$embed_name =~ s{.*/}{};
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my $embed_name_ascii = $::locale->quote_special_chars('filenames', $embed_name);
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$embed_name_ascii =~ s{[^a-z0-9!@#$%^&*(){}[\],.+'"=_-]+}{}gi;
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my @options;
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my $add_opt = sub {
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my ($name, $value) = @_;
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return if ($value // '') eq '';
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push @options, sprintf('%s={%s}', $name, $value); # TODO: escaping
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};
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$add_opt->('filespec', $embed_name_ascii);
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$add_opt->('ucfilespec', $embed_name);
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$add_opt->('desc', $file->{description});
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$add_opt->('afrelationship', $file->{relationship});
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$add_opt->('mimetype', $file->{mime_type});
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return sprintf('\embedfile[%s]{%s}', join(',', @options), $file_name);
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}
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sub _force_mandatory_packages {
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my ($self, @lines) = @_;
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my @new_lines;
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my %used_packages;
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my @required_packages = qw(textcomp ulem);
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push @required_packages, 'embedfile' if $self->{pdf_a};
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foreach my $line (@lines) {
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if ($line =~ m/\\usepackage[^\{]*{(.*?)}/) {
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$used_packages{$1} = 1;
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} elsif ($line =~ m/\\begin\{document\}/) {
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if ($self->{pdf_a} && $self->{pdf_a}->{xmp}) {
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my $version = $self->{pdf_a}->{version} // '3a';
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my $xmp_file_name = $self->{userspath} . "/pdfa.xmp";
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my $out = IO::File->new($xmp_file_name, ">:encoding(utf-8)") || croak "Error creating ${xmp_file_name}: $!";
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$out->print(Encode::encode('utf-8', $self->{pdf_a}->{xmp}));
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$out->close;
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push @new_lines, (
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"\\usepackage[a-${version},mathxmp]{pdfx}[2018/12/22]\n",
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"\\hypersetup{pdfstartview=}\n",
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);
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}
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push @new_lines, map { "\\usepackage{$_}\n" } grep { !$used_packages{$_} } @required_packages;
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push @new_lines, $line;
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push @new_lines, map { $self->_embed_file_directive($_) } @{ $self->{pdf_attachments} // [] };
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next;
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} elsif ($line =~ m/^ *\\documentclass/) {
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if ($self->{pdf_a} && $self->{pdf_a}->{xmp}) {
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push @new_lines, (
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"\\RequirePackage{pdfmanagement-testphase}\n",
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"\\DocumentMetadata{pdfstandard=A-3b}\n",
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);
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}
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}
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push @new_lines, $line;
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}
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return @new_lines;
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}
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sub parse {
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my $self = $_[0];
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local *OUT = $_[1];
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my $form = $self->{"form"};
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if (!open(IN, "$form->{templates}/$form->{IN}")) {
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$self->{"error"} = "$form->{templates}/$form->{IN}: $!";
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return 0;
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}
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binmode IN, ":utf8";
|
|
my @lines = <IN>;
|
|
close(IN);
|
|
|
|
$self->_parse_config_lines(\@lines);
|
|
@lines = $self->_force_mandatory_packages(@lines) if (ref $self eq 'SL::Template::LaTeX');
|
|
|
|
my $contents = join("", @lines);
|
|
|
|
# detect pagebreak block and its parameters
|
|
if ($contents =~ /^(.*)($self->{tag_start_qm}pagebreak\s+(\d+)\s+(\d+)\s+(\d+)\s*$self->{tag_end_qm}(.*?)$self->{tag_start_qm}end(\s*pagebreak)?$self->{tag_end_qm})/s) {
|
|
$self->{"chars_per_line"} = $3;
|
|
$self->{"lines_on_first_page"} = $4;
|
|
$self->{"lines_on_second_page"} = $5;
|
|
$self->{"pagebreak_block"} = $6;
|
|
|
|
substr($contents, length($1), length($2)) = "";
|
|
}
|
|
|
|
$self->{"forced_pagebreaks"} = [];
|
|
|
|
my $new_contents;
|
|
if ($self->{use_template_toolkit}) {
|
|
if ($self->{custom_tag_style}) {
|
|
$contents = "[% TAGS $self->{tag_start} $self->{tag_end} %]\n" . $contents;
|
|
}
|
|
|
|
my $globals = global_vars();
|
|
|
|
$::form->template->process(\$contents, { %$form, %$globals }, \$new_contents) || die $::form->template->error;
|
|
} else {
|
|
$new_contents = $self->parse_block($contents);
|
|
}
|
|
if (!defined($new_contents)) {
|
|
$main::lxdebug->leave_sub();
|
|
return 0;
|
|
}
|
|
|
|
binmode OUT, ":utf8";
|
|
print OUT Unicode::Normalize::normalize('C', $new_contents);
|
|
|
|
if ($form->{"format"} =~ /postscript/i) {
|
|
return $self->convert_to_postscript();
|
|
} elsif ($form->{"format"} =~ /pdf/i) {
|
|
return $self->convert_to_pdf();
|
|
} else {
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
sub _texinputs_path {
|
|
my ($self, $templates_path) = @_;
|
|
|
|
my $exe_dir = SL::System::Process::exe_dir();
|
|
$templates_path = $exe_dir . '/' . $templates_path unless $templates_path =~ m{^/};
|
|
|
|
return join(':', grep({ $_ } ('.', $exe_dir . '/texmf', $exe_dir . '/users', $templates_path, $ENV{TEXINPUTS})), '');
|
|
}
|
|
|
|
sub _setup_env {
|
|
my ($self) = @_;
|
|
|
|
my $userspath = $::lx_office_conf{paths}->{userspath};
|
|
$ENV{openin_any} = "r";
|
|
$ENV{TEXINPUTS} = $self->_texinputs_path($self->{form}->{templates});
|
|
$ENV{TEXMFHOME} = File::Spec->rel2abs($userspath . "/texmf", SL::System::Process::exe_dir());
|
|
$ENV{TEXMFVAR} = $ENV{TEXMFHOME} . "/var";
|
|
|
|
File::Path::make_path($ENV{TEXMFVAR});
|
|
}
|
|
|
|
sub convert_to_postscript {
|
|
my ($self) = @_;
|
|
my ($form, $userspath) = ($self->{"form"}, $self->{"userspath"});
|
|
|
|
# Convert the tex file to postscript
|
|
local ($ENV{TEXINPUTS}, $ENV{TEXMFHOME}, $ENV{TEXMFVAR}, $ENV{openin_any});
|
|
$self->_setup_env;
|
|
|
|
if (!chdir("$userspath")) {
|
|
$self->{"error"} = "chdir : $!";
|
|
$self->cleanup();
|
|
return 0;
|
|
}
|
|
|
|
$form->{tmpfile} =~ s/\Q$userspath\E\///g;
|
|
|
|
my $latex = $self->_get_latex_path();
|
|
|
|
if (system("${latex} --interaction=nonstopmode $form->{tmpfile} " .
|
|
"> $form->{tmpfile}.err") == -1) {
|
|
die "system call to $latex failed: $!";
|
|
}
|
|
if ($?) {
|
|
$self->{"error"} = $form->cleanup($latex);
|
|
return 0;
|
|
}
|
|
|
|
$form->{tmpfile} =~ s/tex$/dvi/;
|
|
|
|
if (system("dvips $form->{tmpfile} -o -q > /dev/null") == -1) {
|
|
die "system call to dvips failed: $!";
|
|
}
|
|
|
|
if ($?) {
|
|
$self->{"error"} = "dvips : $?";
|
|
$self->cleanup('dvips');
|
|
return 0;
|
|
}
|
|
$form->{tmpfile} =~ s/dvi$/ps/;
|
|
|
|
$self->cleanup();
|
|
|
|
return 1;
|
|
}
|
|
|
|
sub convert_to_pdf {
|
|
my ($self) = @_;
|
|
my ($form, $userspath) = ($self->{"form"}, $self->{"userspath"});
|
|
|
|
# Convert the tex file to PDF
|
|
local ($ENV{TEXINPUTS}, $ENV{TEXMFHOME}, $ENV{TEXMFVAR}, $ENV{openin_any});
|
|
$self->_setup_env;
|
|
|
|
if (!chdir("$userspath")) {
|
|
$self->{"error"} = "chdir : $!";
|
|
$self->cleanup();
|
|
return 0;
|
|
}
|
|
|
|
$form->{tmpfile} =~ s/\Q$userspath\E\///g;
|
|
|
|
my $latex = $self->_get_latex_path();
|
|
|
|
if (system("${latex} --interaction=nonstopmode $form->{tmpfile} " .
|
|
"> $form->{tmpfile}.err") == -1) {
|
|
die "system call to $latex failed: $!";
|
|
}
|
|
|
|
if ($?) {
|
|
$self->{error} = $form->cleanup($latex);
|
|
return 0;
|
|
}
|
|
|
|
$form->{tmpfile} =~ s/tex$/pdf/;
|
|
|
|
$self->cleanup();
|
|
|
|
return 1;
|
|
}
|
|
|
|
sub _get_latex_path {
|
|
return $::lx_office_conf{applications}->{latex} || 'latexmk --pdflatex';
|
|
}
|
|
|
|
sub get_mime_type() {
|
|
my ($self) = @_;
|
|
|
|
if ($self->{"form"}->{"format"} =~ /postscript/i) {
|
|
return "application/postscript";
|
|
} else {
|
|
return "application/pdf";
|
|
}
|
|
}
|
|
|
|
sub uses_temp_file {
|
|
return 1;
|
|
}
|
|
|
|
sub parse_and_create_pdf {
|
|
my ($class, $template_file_name, %params) = @_;
|
|
|
|
my $userspath = delete($params{userspath}) || $::lx_office_conf{paths}->{userspath};
|
|
my $keep_temp = $::lx_office_conf{debug} && $::lx_office_conf{debug}->{keep_temp_files};
|
|
my ($tex_fh, $tex_file_name) = File::Temp::tempfile(
|
|
'kivitendo-printXXXXXX',
|
|
SUFFIX => '.tex',
|
|
DIR => $userspath,
|
|
UNLINK => $keep_temp ? 0 : 1,,
|
|
);
|
|
|
|
my $old_wd = getcwd();
|
|
|
|
my $local_form = Form->new('');
|
|
$local_form->{cwd} = $old_wd;
|
|
$local_form->{IN} = $template_file_name;
|
|
$local_form->{tmpdir} = $userspath;
|
|
$local_form->{tmpfile} = $tex_file_name;
|
|
$local_form->{templates} = SL::DB::Default->get->templates;
|
|
|
|
foreach (keys %params) {
|
|
croak "The parameter '$_' must not be used." if exists $local_form->{$_};
|
|
$local_form->{$_} = $params{$_};
|
|
}
|
|
|
|
my $error;
|
|
eval {
|
|
my $template = SL::Template::LaTeX->new(file_name => $template_file_name, form => $local_form, userspath => $userspath);
|
|
my $result = $template->parse($tex_fh) && $template->convert_to_pdf;
|
|
|
|
die $template->{error} unless $result;
|
|
|
|
1;
|
|
} or do { $error = $EVAL_ERROR; };
|
|
|
|
chdir $old_wd;
|
|
close $tex_fh;
|
|
|
|
if ($keep_temp) {
|
|
chmod(((stat $tex_file_name)[2] & 07777) | 0660, $tex_file_name);
|
|
} else {
|
|
my $tmpfile = $tex_file_name;
|
|
$tmpfile =~ s/\.\w+$//;
|
|
unlink(grep { !m/\.pdf$/ } <$tmpfile.*>);
|
|
}
|
|
|
|
return (error => $error) if $error;
|
|
return (file_name => do { $tex_file_name =~ s/tex$/pdf/; $tex_file_name });
|
|
}
|
|
|
|
sub global_vars {
|
|
{
|
|
AUTH => $::auth,
|
|
INSTANCE_CONF => $::instance_conf,
|
|
LOCALE => $::locale,
|
|
LXCONFIG => $::lx_office_conf,
|
|
LXDEBUG => $::lxdebug,
|
|
MYCONFIG => \%::myconfig,
|
|
};
|
|
}
|
|
|
|
1;
|