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tables-long.pl
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tables-long.pl
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# Copyright (C) 2004–2015 Alex Schroeder <alex@gnu.org>
# Copyright (C) 2015 Matt Adams <opensource@radicaldynamic.com>
#
# This program is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# this program. If not, see <http://www.gnu.org/licenses/>.
use strict;
use v5.10;
AddModuleDescription('tables-long.pl', 'Long Table Markup Extension');
our ($bol, @Flags, $Fragment, @Blocks, $FS, @MyRules, $PortraitSupportColorDiv);
push(@MyRules, \&TablesLongRule);
my $TablesLongLabels = '';
sub TablesLongRule {
# start table by declaring the abbreviations used:
# <table foo,bar,baz>
# end with a horizontal line:
# ----
# use label: or label= to start a cell
# label: bla
# bla bla bla
# a new row is started when a cell is repeated
# if cells are missing, column spans are created (the first row
# could use row spans...)
if ($bol && m|\G\s*\n*\<table(/[A-Za-z\x{0080}-\x{fffd}/]+)? +([A-Za-z\x{0080}-\x{fffd},;\/ ]+)\> *\n|cg) {
my $class = join(' ', split(m|/|, $1)); # leading / in $1 will make sure we have leading space
Clean(CloseHtmlEnvironments() . "<table class=\"user long$class\">");
# labels and their default class
my %default_class = ();
my @labels = map { my ($label, @classes) = split m|/|;
$default_class{$label} = join(' ', @classes);
$label;
} split(/ *[,;] */, $2);
my $regexp = join('|', @labels);
# read complete table
my @lines = ();
while (m/\G(.*)\n?/cg) { # last line may miss newline
my $line = $1;
last if substr($line,0,4) eq ('----'); # the rest of this line is ignored!
push(@lines, $line);
}
# parse lines and print table rows
my $lastpos = pos;
my @rows = ();
my %row = ();
my %class = %default_class;
my %rowspan = ();
my $label = '';
my $rowspan = '';
my $rownum = 1;
for my $line (@lines) {
if ($line =~ m|^($regexp)/?([0-9]+)?/?([A-Za-z\x{0080}-\x{fffd}/]+)?[:=] *(.*)|) { # regexp changes for other tables
$label = $1;
$rowspan = $2;
$class = join(' ', split(m|/|, $3)); # no leading / therefore no leading space
$line = $4;
if ($row{$label}) { # repetition of label, we must start a new row
TablesLongRow(\@labels, \%row, \%class, \%rowspan, $rownum++);
%row = ();
%class = %default_class;
foreach my $key (keys %rowspan) {
delete $rowspan{$key} if $rowspan{$key} == 1;
$rowspan{$key}--; # 0 will turn into negative numbers
}
}
$class{$label} = $class if $class;
$rowspan{$label} = $rowspan if $rowspan;
}
$row{$label} .= $line . "\n";
}
TablesLongRow(\@labels, \%row, \%class, \%rowspan, $rownum); # don't forget the last row
Clean('</table>' . AddHtmlEnvironment('p'));
pos = $lastpos;
return '';
}
return;
}
sub TablesLongRow {
my @labels = @{$_[0]};
my %row = %{$_[1]};
my %class = %{$_[2]};
my %rowspan = %{$_[3]};
my $rownum = $_[4];
if ($rownum == 1) {
Clean('<tr class="first odd">');
} elsif ($rownum % 2 == 0) {
Clean('<tr class="even">');
} else {
Clean('<tr class="odd">');
}
# first print the old row
for my $i (0 .. $#labels) {
next if not $row{$labels[$i]}; # should only happen after previous cellspans
my $colspan = 1;
while ($i + $colspan < $#labels + 1
and not $row{$labels[$i+$colspan]}
and not $rowspan{$labels[$i+$colspan]}) {
$colspan++;
}
my $rowspan = $rowspan{$labels[$i]};
my $class = $class{$labels[$i]};
my $html = '<';
$html .= $rownum == 1 ? 'th' : 'td';
$html .= " colspan=\"$colspan\"" if $colspan != 1;
$html .= " rowspan=\"$rowspan\"" if defined $rowspan and $rowspan >= 0; # ignore negatives
$html .= " class=\"$class\"" if $class;
$html .= '>';
Clean($html);
# WATCH OUT: here comes the evil magic messing with the internals! first, clean everything up like at the end of
# ApplyRules. The reason we are doing this is because we don't want to treat the entire long table as a single dirty
# block. We want to cache as much as possible.
if ($Fragment ne '') {
$Fragment =~ s|<p>\s*</p>||g; # clean up extra paragraphs (see end Dirty())
print $Fragment;
push(@Blocks, $Fragment);
push(@Flags, 0);
$Fragment = '';
}
# call ApplyRules, and *inline* the results; ignoring $PortraitSupportColorDiv
local $PortraitSupportColorDiv;
my ($blocks, $flags) = ApplyRules($row{$labels[$i]}, 1, 1); # local links, anchors
# split using a negative limit so that trailing empty fields are not stripped
push(@Blocks, split(/$FS/, $blocks, -1));
push(@Flags, split(/$FS/, $flags, -1));
# end of evil magic
Clean(CloseHtmlEnvironments() . '</' . ($rownum == 1 ? 'th' : 'td') . '>');
}
Clean('</tr>');
}