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package LatexIndent::HorizontalWhiteSpace;
# 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.
#
# See http://www.gnu.org/licenses/.
#
# Chris Hughes, 2017
#
# For all communication, please visit: https://github.com/cmhughes/latexindent.pl
use strict;
use warnings;
use LatexIndent::GetYamlSettings qw/%mainSettings/;
use LatexIndent::Switches qw/$is_t_switch_active $is_tt_switch_active/;
use LatexIndent::LogFile qw/$logger/;
use Exporter qw/import/;
our @EXPORT_OK = qw/remove_trailing_whitespace remove_leading_space/;
sub remove_trailing_whitespace {
my $self = shift;
my %input = @_;
$logger->trace("*Horizontal space removal routine") if $is_t_switch_active;
# removeTrailingWhitespace can be either a hash or a scalar, but if
# it's a scalar, we need to fix it
if ( ref( $mainSettings{removeTrailingWhitespace} ) ne 'HASH' ) {
$logger->trace("removeTrailingWhitespace specified as scalar, will update it to be a hash")
if $is_t_switch_active;
# grab the value
my $removeTWS = $mainSettings{removeTrailingWhitespace};
# delete the scalar
delete $mainSettings{removeTrailingWhitespace};
# redefine it as a hash
${ $mainSettings{removeTrailingWhitespace} }{beforeProcessing} = $removeTWS;
${ $mainSettings{removeTrailingWhitespace} }{afterProcessing} = $removeTWS;
$logger->trace("removeTrailingWhitespace: beforeProcessing is now $removeTWS") if $is_t_switch_active;
$logger->trace("removeTrailingWhitespace: afterProcessing is now $removeTWS") if $is_t_switch_active;
}
# this method can be called before the indendation, and after, depending upon the input
if ( $input{when} eq "before" ) {
return unless ( ${ $mainSettings{removeTrailingWhitespace} }{beforeProcessing} );
$logger->trace(
"Removing trailing white space *before* the document is processed (see removeTrailingWhitespace: beforeProcessing)"
) if $is_t_switch_active;
}
elsif ( $input{when} eq "after" ) {
return unless ( ${ $mainSettings{removeTrailingWhitespace} }{afterProcessing} );
$logger->trace(
"Removing trailing white space *after* the document is processed (see removeTrailingWhitespace: afterProcessing)"
) if $is_t_switch_active;
}
else {
return;
}
${$self}{body} =~ s/
\h+ # followed by possible horizontal space
$ # up to the end of a line
//xsmg;
}
sub remove_leading_space {
my $self = shift;
$logger->trace("*Removing leading space from ${$self}{name} (verbatim/noindentblock already accounted for)")
if $is_t_switch_active;
${$self}{body} =~ s/
(
^ # beginning of the line
\h* # with 0 or more horizontal spaces
)? # possibly
//mxg;
return;
}
1;
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