version 1.2, 2000/06/27 19:35:32
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version 1.17, 2003/06/09 21:46:11
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# The LearningOnline Network with CAPA |
# The LearningOnline Network with CAPA |
# Style Parser Module |
# Style Parser Module (new version) |
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# |
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# $Id$ |
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# |
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# Copyright Michigan State University Board of Trustees |
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# |
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# This file is part of the LearningOnline Network with CAPA (LON-CAPA). |
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# |
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# LON-CAPA is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# LON-CAPA is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with LON-CAPA; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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# |
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# /home/httpd/html/adm/gpl.txt |
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# |
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# http://www.lon-capa.org/ |
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# |
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# Copyright for TtHfunc and TtMfunc by Ian Hutchinson. |
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# TtHfunc and TtMfunc (the "Code") may be compiled and linked into |
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# binary executable programs or libraries distributed by the |
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# Michigan State University (the "Licensee"), but any binaries so |
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# distributed are hereby licensed only for use in the context |
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# of a program or computational system for which the Licensee is the |
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# primary author or distributor, and which performs substantial |
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# additional tasks beyond the translation of (La)TeX into HTML. |
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# The C source of the Code may not be distributed by the Licensee |
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# to any other parties under any circumstances. |
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# |
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# written 01/08/01 by Alexander Sakharuk |
# |
# |
# last modified 06/23/00 by Alexander Sakharuk |
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package Apache::style; |
package Apache::style; |
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use strict; |
use strict; |
use HTML::TokeParser; |
use HTML::TokeParser; |
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#============================================================= style subroutine |
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sub styleparser { |
sub styleparser { |
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my ($target,$content_style_string) = @_; |
my ($target,$content_style_string) = @_; |
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my $current_key = ''; |
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my $current_value = ''; |
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my @keys = (); |
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my @values = (); |
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my @style_array = (); |
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my $stoken; |
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my $b_pos; |
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my $e_pos; |
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my $entry; |
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$b_pos = index($content_style_string,'<definetag',0); |
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while ($b_pos != -1) { |
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$e_pos = index($content_style_string,'</definetag',$b_pos); |
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$entry = substr($content_style_string,$b_pos,$e_pos-$b_pos+12); |
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$_ = $entry; |
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m/<definetag\s+name\s*=\s*\"([^\"]*)\"/; |
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$current_key = $1; |
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push @keys,$current_key; |
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# &Apache::lonxml::debug("$current_key\n"); |
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my $b_position = index($entry,'<'.$target.'>',0); |
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my $e_position = index($entry,'</'.$target.'>',$b_position); |
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my $target_length = length($target) + 2; |
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if ($b_position > -1) { |
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my $entry_target = substr($entry,$b_position+$target_length,$e_position-$b_position-$target_length); |
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my $pstyle = HTML::TokeParser->new(\$entry_target); |
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while ($stoken = $pstyle->get_token) { |
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if ($stoken->[0] eq 'T') { |
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$current_value .= $stoken->[1]; |
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} elsif ($stoken->[0] eq 'S') { |
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my $number=-1; |
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if ($stoken->[1] ne "$current_key") { |
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$number = &testkey($stoken->[0],$stoken->[1],@keys); |
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} |
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if ($number != -1) { |
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$current_value .= &testvalue($number,$stoken->[0],$stoken->[2],@values); |
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} else { |
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$current_value .= $stoken->[4]; |
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} |
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} else { |
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my $number=-1; |
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if (('/'.$stoken->[1]) ne "$current_key") { |
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$number = &testkey($stoken->[0],$stoken->[1],@keys); |
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} |
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if ($number != -1) { |
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$current_value .= &testvalue($number,$stoken->[0],$stoken->[2],@values); |
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} else { |
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$current_value .= $stoken->[2]; |
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} |
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} |
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} |
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} |
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$current_value =~ s/\n//g; |
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########### |
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# $current_value =~ s/^\s*//g; |
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# $current_value =~ s/\s*$//g; |
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# $current_value =~ s/\( (\w)/($1/g; |
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########### |
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if ($current_value) { |
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push(@values,$current_value); |
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#&Apache::lonxml::debug("a:$current_value: $#values \n"); |
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} else { |
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pop(@keys); |
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} |
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$current_key = ''; |
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$current_value =''; |
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$b_pos = index($content_style_string,'<definetag',$b_pos+1); |
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} |
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for (my $i=0; $i<=$#keys; $i++) { |
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push @style_array,$keys[$i],$values[$i]; |
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} |
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my %style_for_target = @style_array; |
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# check printing |
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# foreach $current_key (sort keys %style_for_target) { |
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# &Apache::lonxml::debug("$current_key => $style_for_target{$current_key}\n"); |
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# } |
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# return result |
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return %style_for_target; |
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#------------------------------------------- target redefinition (if necessary) |
} |
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my @target_string = ''; |
sub testkey { |
my $element; |
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my ($zeroth,$first,@keys) = @_; |
($element,@target_string) = split ('&&',$target); |
my $number = -1; |
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if ($zeroth eq 'S') { |
map {$content_style_string =~ s/\<(.*)$_\>/\<$1$element\>/g; } @target_string; |
for (my $i=$#keys; $i>=0; $i=$i-1) { |
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if ($first eq lc($keys[$i])) { |
$target = $element; |
$number = $i; |
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#-------------------------------------------- create a table for defined target |
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#----------------------------------------- from the information from Style File |
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my @value_style = (); |
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my $current_key = ''; |
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my $current_value = ''; |
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my $stoken; |
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my $flag; |
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my $iele; |
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my $pstyle = HTML::TokeParser->new(\$content_style_string); |
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while ($stoken = $pstyle->get_token) { |
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#----------------------------------------------------- start for tag definition |
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if ($stoken->[0] eq 'S' and $stoken->[1] eq 'definetag') { |
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#-------------------------------------------------------------- new key in hash |
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$current_key = $stoken->[2]{name}; |
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$flag = 0; |
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#-------------------------------------------------------------- metadata output |
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if ($target eq 'meta') { |
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while ($stoken = $pstyle->get_token and $stoken->[1] ne 'definetag') { |
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if ($stoken->[0] eq 'S' and $stoken->[1] eq 'meta') { |
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while ($stoken = $pstyle->get_token and $stoken->[1] ne 'meta') { |
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$current_value .= $stoken->[1]; |
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} |
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} |
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} |
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} else { |
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#--------------------------------------------------------------- outtext output |
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while ($stoken = $pstyle->get_token and $stoken->[1] ne 'outtext') { |
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if ($stoken->[1] eq 'definetag') { |
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$flag = 1; |
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last; |
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} |
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} |
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if ($flag == 0) { |
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while ($stoken = $pstyle->get_token and $stoken->[0] ne 'S') { |
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$current_value .= $stoken->[1]; |
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} |
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while ($stoken->[1] ne 'definetag') { |
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if ($stoken->[0] eq 'S' and $stoken->[1] eq $target) { |
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while ($stoken = $pstyle->get_token) { |
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if ($stoken->[1] ne $target) { |
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if ($stoken->[0] eq 'S') { |
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my $flagelem = 0; |
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for (my $i=$#value_style-1;$i>0;$i=$i-2) { |
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if ($stoken->[1] eq $value_style[$i]) { |
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$flagelem = 1; |
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$iele = $i+1; |
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last; |
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} |
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} |
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if ($flagelem == 0) { |
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$current_value .= $stoken->[4]; |
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} else { |
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$current_value .= $value_style[$iele]; |
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} |
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} |
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if ($stoken->[0] eq 'E') { |
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my $flagelem = 0; |
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for (my $i=$#value_style-1;$i>0;$i=$i-2) { |
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if ('/'.$stoken->[1] eq $value_style[$i]) { |
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$flagelem = 1; |
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$iele = $i+1; |
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last; |
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} |
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} |
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if ($flagelem == 0) { |
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$current_value .= $stoken->[2]; |
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} else { |
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$current_value .= $value_style[$iele]; |
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} |
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} |
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if ($stoken->[0] eq 'T') { |
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$current_value .= $stoken->[1]; |
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} |
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} else { |
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last; |
last; |
} |
} |
} |
} |
} elsif ($stoken->[0] eq 'S' and $stoken->[1] ne $target) { |
} elsif ($zeroth eq 'E') { |
my $tempotempo = $stoken->[1]; |
for (my $i=$#keys; $i>=0; $i=$i-1) { |
while ($stoken = $pstyle->get_token and $stoken->[1] ne $tempotempo) { |
if ('/'.$first eq lc($keys[$i])) { |
} |
$number = $i; |
} |
last; |
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} |
while ($stoken = $pstyle->get_token) { |
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if ($stoken->[0] eq 'T') { |
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$current_value .= $stoken->[1]; |
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} |
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if ($stoken->[0] eq 'E') { |
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last; |
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} |
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if ($stoken->[0] eq 'S') { |
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last; |
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} |
} |
} |
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} |
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} |
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} |
} |
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return $number; |
} |
} |
$current_value =~ s/(\s)+/$1/g; |
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if ($current_value ne ' ' and $current_value ne '' ) { |
sub testvalue { |
push (@value_style,lc $current_key,$current_value); |
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} |
my ($number,$zeroth,$second,@values) = @_; |
$current_key = ''; |
my $current_content = $values[$number]; |
$current_value = ''; |
if ($zeroth eq 'S') { |
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my %tempo_hash = %$second; |
} |
while ((my $current_k,my $current_v) = each %tempo_hash) { |
my %style_for_target = @value_style; |
$current_content =~ s/\$$current_k/$current_v/g; |
#--------------------------------------------------------------- check printing |
} |
# while (($current_key,$current_value) = each %style_for_target) { |
} elsif ($zeroth eq 'E') { |
# print "$current_key => $current_value\n"; |
$current_content = $values[$number]; |
# } |
} |
#---------------------------------------------------------------- return result |
return $current_content; |
return %style_for_target; |
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} |
} |
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1; |
1; |
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__END__ |
__END__ |