package LatexIndent::Command; # 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::Tokens qw/%tokens/; use LatexIndent::TrailingComments qw/$trailingCommentRegExp/; use LatexIndent::Switches qw/$is_t_switch_active $is_tt_switch_active/; use LatexIndent::GetYamlSettings qw/%mainSettings/; use LatexIndent::LogFile qw/$logger/; use Data::Dumper; use Exporter qw/import/; our @ISA = "LatexIndent::Document"; # class inheritance, Programming Perl, pg 321 our @EXPORT_OK = qw/construct_command_regexp $commandRegExp $commandRegExpTrailingComment $optAndMandAndRoundBracketsRegExpLineBreaks/; our $commandCounter; our $commandRegExp; our $commandRegExpTrailingComment; our $optAndMandAndRoundBracketsRegExp; our $optAndMandAndRoundBracketsRegExpLineBreaks; # store the regular expresssion for matching and replacing sub construct_command_regexp{ my $self = shift; $optAndMandAndRoundBracketsRegExp = $self->get_arguments_regexp( roundBrackets=>${$mainSettings{commandCodeBlocks}}{roundParenthesesAllowed}, stringBetweenArguments=>1); $optAndMandAndRoundBracketsRegExpLineBreaks = $self->get_arguments_regexp( roundBrackets=>${$mainSettings{commandCodeBlocks}}{roundParenthesesAllowed}, mode=>"lineBreaksAtEnd", stringBetweenArguments=>1); # put together a list of the special command names (this was mostly motivated by the \@ifnextchar[ issue) my $commandNameSpecialRegExp = q(); if(ref(${$mainSettings{commandCodeBlocks}}{commandNameSpecial}) eq "ARRAY"){ my @commandNameSpecial = @{${$mainSettings{commandCodeBlocks}}{commandNameSpecial}}; $logger->trace("*Looping through array for commandCodeBlocks->commandNameSpecial") if $is_t_switch_active ; # note that the zero'th element in this array contains the amalgamate switch, which we don't want! foreach (@commandNameSpecial[1 .. $#commandNameSpecial]) { $logger->trace("$_") if $is_t_switch_active ; $commandNameSpecialRegExp .= ($commandNameSpecialRegExp eq ""?q():"|").$_; } # turn the above into a regexp $commandNameSpecialRegExp = qr/$commandNameSpecialRegExp/; } # details to log file $logger->trace("*The special command names regexp is: $commandNameSpecialRegExp (see commandNameSpecial)") if $is_t_switch_active; # read from fine tuning my $commandNameRegExp = qr/${${$mainSettings{fineTuning}}{commands}}{name}/; # construct the command regexp $commandRegExp = qr/ (\\|\\@|@) ( $commandNameRegExp|$commandNameSpecialRegExp # lowercase|uppercase letters, @, *, numbers ) (\h*) (\R*)? ($optAndMandAndRoundBracketsRegExp) (\R)? /sx; # command regexp with trailing comment $commandRegExpTrailingComment = qr/$commandRegExp(\h*)((?:$trailingCommentRegExp\h*)*)/; } sub tasks_particular_to_each_object{ my $self = shift; # check for adding/removing linebreaks before = $self->check_linebreaks_before_equals; # search for arguments $self->find_opt_mand_arguments; # situation: ${${$self}{linebreaksAtEnd}}{end} == 1, and the argument container object # still contains a linebreak at the end; in this case, we need to remove the linebreak from # the container object if(${${$self}{linebreaksAtEnd}}{end} == 1 and ${${${$self}{children}}[0]}{body} =~ m/\R$/s and !${$self}{endImmediatelyFollowedByComment}){ $logger->trace("Removing linebreak from argument container of ${$self}{name}") if $is_t_switch_active; ${${${$self}{children}}[0]}{body} =~ s/\R$//s; ${${${${$self}{children}}[0]}{linebreaksAtEnd}}{body} = 0; } # situation: ${${$self}{linebreaksAtEnd}}{end} == 1 and the last argument specifies # EndFinishesWithLineBreaks = 0 (see test-cases/commands/just-one-command-mod10.tex) if(${${$self}{linebreaksAtEnd}}{end} == 1 and defined ${${${${$self}{children}}[0]}{children}[-1]}{EndFinishesWithLineBreak} and ${${${${$self}{children}}[0]}{children}[-1]}{EndFinishesWithLineBreak} == -1 ){ $logger->trace("Switching linebreaksAtEnd{end} to be 0 in command ${$self}{name} as last argument specifies EndFinishesWithLineBreak == 0") if $is_t_switch_active; ${${$self}{linebreaksAtEnd}}{end} = 0; ${$self}{EndFinishesWithLineBreak} = -1; } # if the last argument finishes with a linebreak, it won't get interpreted at # the right time (see test-cases/commands/commands-one-line-nested-simple-mod1.tex for example) # so this little bit fixes it if(${${${${${$self}{children}}[0]}{children}[-1]}{linebreaksAtEnd}}{end} and ${${$self}{linebreaksAtEnd}}{end} == 0 and defined ${${${${$self}{children}}[0]}{children}[-1]}{EndFinishesWithLineBreak} and ${${${${$self}{children}}[0]}{children}[-1]}{EndFinishesWithLineBreak} >= 1 and !${$self}{endImmediatelyFollowedByComment}){ # update the Command object $logger->trace("Adjusting linebreaksAtEnd in command ${$self}{name}") if $is_t_switch_active; ${${$self}{linebreaksAtEnd}}{end} = ${${${${${$self}{children}}[0]}{children}[-1]}{linebreaksAtEnd}}{end}; ${$self}{replacementText} .= "\n"; # if the last argument has EndFinishesWithLineBreak == 3 if (${${${${$self}{children}}[0]}{children}[-1]}{EndFinishesWithLineBreak} == 3 ){ my $EndStringLogFile = ${${${${$self}{children}}[0]}{children}[-1]}{aliases}{EndFinishesWithLineBreak}||"EndFinishesWithLineBreak"; $logger->trace("Adding another blank line to replacement text for ${$self}{name} as last argument has $EndStringLogFile == 3 ") if $is_t_switch_active; ${$self}{replacementText} .= (${$mainSettings{modifyLineBreaks}}{preserveBlankLines}?$tokens{blanklines}:"\n")."\n"; } # update the argument object $logger->trace("Adjusting argument object in command, ${$self}{name}") if $is_t_switch_active; ${${${${$self}{children}}[0]}{linebreaksAtEnd}}{body} = 0; ${${${$self}{children}}[0]}{body} =~ s/\R$//s; # update the last mandatory/optional argument $logger->trace("Adjusting last argument in command, ${$self}{name}") if $is_t_switch_active; ${${${${${$self}{children}}[0]}{children}[-1]}{linebreaksAtEnd}}{end} = 0; ${${${${$self}{children}}[0]}{children}[-1]}{EndFinishesWithLineBreak} = -1; ${${${${$self}{children}}[0]}{children}[-1]}{replacementText} =~ s/\R$//s; # output to log file $logger->trace(Dumper(${${${$self}{children}}[0]}{children}[-1])) if $is_tt_switch_active; } # situation: ${${$self}{linebreaksAtEnd}}{end} == 1 and the last argument has added # a line break, which can result in a bogus blank line (see test-cases/commands/just-one-command.tex with mand-args-mod1.yaml) if(${${$self}{linebreaksAtEnd}}{end} == 1 and defined ${${${${$self}{children}}[0]}{children}[-1]}{EndFinishesWithLineBreak} and ${${${${$self}{children}}[0]}{children}[-1]}{EndFinishesWithLineBreak} >= 1 and ${${${${$self}{children}}[0]}{children}[-1]}{replacementText}=~m/\R$/s and !${$self}{endImmediatelyFollowedByComment}){ # last argument adjustment $logger->trace("Adjusting last argument in command, ${$self}{name} to avoid double line break") if $is_t_switch_active; ${${${${$self}{children}}[0]}{children}[-1]}{replacementText}=~s/\R$//s; ${${${${${$self}{children}}[0]}{children}[-1]}{linebreaksAtEnd}}{end} = 0; # argument object adjustment $logger->trace("Adjusting argument object in command, ${$self}{name} to avoid double line break") if $is_t_switch_active; ${${${${$self}{children}}[0]}{linebreaksAtEnd}}{body} = 0; ${${${$self}{children}}[0]}{body}=~s/\R$//s; } # the arguments body might finish with horizontal space, in which case, we need to transfer this # to the parent object replacement text. # # see ../test-cases/texexchange/5461.tex which was the first example to demonstrate the need for this if(!${${${$self}{children}}[0]}{endImmediatelyFollowedByComment} and ${${${$self}{children}}[0]}{body} =~ m/\h*$/ and ${$self}{replacementText} !~ m/\R$/){ $logger->trace("${$self}{name}: trailling horizontal space found in arguments -- removing it from arguments, adding to replacement text") if $is_t_switch_active; ${${${$self}{children}}[0]}{body} =~ s/(\h*)$//s; ${$self}{replacementText} .= "$1"; } # search for ifElseFi blocks $self->find_ifelsefi; # search for special begin/end $self->find_special; } sub check_linebreaks_before_equals{ # empty routine, which allows the above routine to function (this routine kicks in for KeyEqualsValuesBraces) return; } sub create_unique_id{ my $self = shift; $commandCounter++; ${$self}{id} = "$tokens{commands}$commandCounter"; return; } sub align_at_ampersand{ # need an empty routine here for commands; see # test-cases/matrix1.tex for example return; } sub double_back_slash_else{ # need an empty routine here for commands; see # test-cases/alignment/command-align.tex for example return; } 1;