--- loncom/xml/style.pm 2000/06/26 15:21:28 1.1
+++ loncom/xml/style.pm 2003/06/09 21:46:11 1.17
@@ -1,149 +1,171 @@
# The LearningOnline Network with CAPA
-# Style Parser Module
+# Style Parser Module (new version)
+#
+# $Id: style.pm,v 1.17 2003/06/09 21:46:11 albertel Exp $
+#
+# Copyright Michigan State University Board of Trustees
+#
+# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
+#
+# LON-CAPA 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 2 of the License, or
+# (at your option) any later version.
+#
+# LON-CAPA 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 LON-CAPA; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+#
+# /home/httpd/html/adm/gpl.txt
+#
+# http://www.lon-capa.org/
+#
+# Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
+# TtHfunc and TtMfunc (the "Code") may be compiled and linked into
+# binary executable programs or libraries distributed by the
+# Michigan State University (the "Licensee"), but any binaries so
+# distributed are hereby licensed only for use in the context
+# of a program or computational system for which the Licensee is the
+# primary author or distributor, and which performs substantial
+# additional tasks beyond the translation of (La)TeX into HTML.
+# The C source of the Code may not be distributed by the Licensee
+# to any other parties under any circumstances.
+#
+# written 01/08/01 by Alexander Sakharuk
#
-# last modified 06/23/00 by Alexander Sakharuk
-package Apache::lonstyleparser;
+package Apache::style;
use strict;
use HTML::TokeParser;
-#============================================================= style subroutine
-
sub styleparser {
- my ($target,$content_style_string) = @_;
+ my ($target,$content_style_string) = @_;
+ my $current_key = '';
+ my $current_value = '';
+ my @keys = ();
+ my @values = ();
+ my @style_array = ();
+ my $stoken;
+
+ my $b_pos;
+ my $e_pos;
+ my $entry;
+
+ $b_pos = index($content_style_string,'<definetag',0);
+ while ($b_pos != -1) {
+ $e_pos = index($content_style_string,'</definetag',$b_pos);
+ $entry = substr($content_style_string,$b_pos,$e_pos-$b_pos+12);
+ $_ = $entry;
+ m/<definetag\s+name\s*=\s*\"([^\"]*)\"/;
+ $current_key = $1;
+ push @keys,$current_key;
+# &Apache::lonxml::debug("$current_key\n");
+ my $b_position = index($entry,'<'.$target.'>',0);
+ my $e_position = index($entry,'</'.$target.'>',$b_position);
+ my $target_length = length($target) + 2;
+ if ($b_position > -1) {
+ my $entry_target = substr($entry,$b_position+$target_length,$e_position-$b_position-$target_length);
+ my $pstyle = HTML::TokeParser->new(\$entry_target);
+ while ($stoken = $pstyle->get_token) {
+ if ($stoken->[0] eq 'T') {
+ $current_value .= $stoken->[1];
+ } elsif ($stoken->[0] eq 'S') {
+ my $number=-1;
+ if ($stoken->[1] ne "$current_key") {
+ $number = &testkey($stoken->[0],$stoken->[1],@keys);
+ }
+ if ($number != -1) {
+ $current_value .= &testvalue($number,$stoken->[0],$stoken->[2],@values);
+ } else {
+ $current_value .= $stoken->[4];
+ }
+ } else {
+ my $number=-1;
+ if (('/'.$stoken->[1]) ne "$current_key") {
+ $number = &testkey($stoken->[0],$stoken->[1],@keys);
+ }
+ if ($number != -1) {
+ $current_value .= &testvalue($number,$stoken->[0],$stoken->[2],@values);
+ } else {
+ $current_value .= $stoken->[2];
+ }
+ }
+ }
+ }
+ $current_value =~ s/\n//g;
+###########
+# $current_value =~ s/^\s*//g;
+# $current_value =~ s/\s*$//g;
+# $current_value =~ s/\( (\w)/($1/g;
+###########
+ if ($current_value) {
+ push(@values,$current_value);
+ #&Apache::lonxml::debug("a:$current_value: $#values \n");
+ } else {
+ pop(@keys);
+ }
+ $current_key = '';
+ $current_value ='';
+ $b_pos = index($content_style_string,'<definetag',$b_pos+1);
+ }
+
+ for (my $i=0; $i<=$#keys; $i++) {
+ push @style_array,$keys[$i],$values[$i];
+ }
+ my %style_for_target = @style_array;
+# check printing
+# foreach $current_key (sort keys %style_for_target) {
+# &Apache::lonxml::debug("$current_key => $style_for_target{$current_key}\n");
+# }
+# return result
+ return %style_for_target;
-#------------------------------------------- target redefinition (if necessary)
-
- my @target_string = '';
- my $element;
-
- ($element,@target_string) = split ('&&',$target);
-
- map {$content_style_string =~ s/\<(.*)$_\>/\<$1$element\>/g; } @target_string;
-
- $target = $element;
-
-#-------------------------------------------- create a table for defined target
-#----------------------------------------- from the information from Style File
-
- my @value_style = ();
- my $current_key = '';
- my $current_value = '';
- my $stoken;
- my $flag;
- my $iele;
-
- my $pstyle = HTML::TokeParser->new(\$content_style_string);
-
- while ($stoken = $pstyle->get_token) {
-#----------------------------------------------------- start for tag definition
- if ($stoken->[0] eq 'S' and $stoken->[1] eq 'definetag') {
-#-------------------------------------------------------------- new key in hash
- $current_key = $stoken->[2]{name};
- $flag = 0;
-#-------------------------------------------------------------- metadata output
- if ($target eq 'meta') {
- while ($stoken = $pstyle->get_token and $stoken->[1] ne 'definetag') {
- if ($stoken->[0] eq 'S' and $stoken->[1] eq 'meta') {
- while ($stoken = $pstyle->get_token and $stoken->[1] ne 'meta') {
- $current_value .= $stoken->[1];
- }
- }
- }
- } else {
-#--------------------------------------------------------------- outtext output
- while ($stoken = $pstyle->get_token and $stoken->[1] ne 'outtext') {
- if ($stoken->[1] eq 'definetag') {
- $flag = 1;
- last;
- }
- }
- if ($flag == 0) {
- while ($stoken = $pstyle->get_token and $stoken->[0] ne 'S') {
- $current_value .= $stoken->[1];
- }
- while ($stoken->[1] ne 'definetag') {
- if ($stoken->[0] eq 'S' and $stoken->[1] eq $target) {
- while ($stoken = $pstyle->get_token) {
- if ($stoken->[1] ne $target) {
- if ($stoken->[0] eq 'S') {
- my $flagelem = 0;
- for (my $i=$#value_style-1;$i>0;$i=$i-2) {
- if ($stoken->[1] eq $value_style[$i]) {
- $flagelem = 1;
- $iele = $i+1;
- last;
- }
- }
- if ($flagelem == 0) {
- $current_value .= $stoken->[4];
- } else {
- $current_value .= $value_style[$iele];
- }
- }
- if ($stoken->[0] eq 'E') {
- my $flagelem = 0;
- for (my $i=$#value_style-1;$i>0;$i=$i-2) {
- if ('/'.$stoken->[1] eq $value_style[$i]) {
- $flagelem = 1;
- $iele = $i+1;
- last;
- }
- }
- if ($flagelem == 0) {
- $current_value .= $stoken->[2];
- } else {
- $current_value .= $value_style[$iele];
- }
- }
- if ($stoken->[0] eq 'T') {
- $current_value .= $stoken->[1];
- }
- } else {
+}
+
+sub testkey {
+
+ my ($zeroth,$first,@keys) = @_;
+ my $number = -1;
+ if ($zeroth eq 'S') {
+ for (my $i=$#keys; $i>=0; $i=$i-1) {
+ if ($first eq lc($keys[$i])) {
+ $number = $i;
last;
- }
- }
- } elsif ($stoken->[0] eq 'S' and $stoken->[1] ne $target) {
- my $tempotempo = $stoken->[1];
- while ($stoken = $pstyle->get_token and $stoken->[1] ne $tempotempo) {
- }
- }
-
- while ($stoken = $pstyle->get_token) {
- if ($stoken->[0] eq 'T') {
- $current_value .= $stoken->[1];
- }
- if ($stoken->[0] eq 'E') {
- last;
- }
- if ($stoken->[0] eq 'S') {
- last;
+ }
+ }
+ } elsif ($zeroth eq 'E') {
+ for (my $i=$#keys; $i>=0; $i=$i-1) {
+ if ('/'.$first eq lc($keys[$i])) {
+ $number = $i;
+ last;
+ }
}
- }
-
- }
- }
}
-
- }
- $current_value =~ s/(\s)+/$1/g;
- if ($current_value ne ' ' and $current_value ne '' ) {
- push (@value_style,lc $current_key,$current_value);
- }
- $current_key = '';
- $current_value = '';
-
- }
- my %style_for_target = @value_style;
-#--------------------------------------------------------------- check printing
-# while (($current_key,$current_value) = each %style_for_target) {
-# print "$current_key => $current_value\n";
-# }
-#---------------------------------------------------------------- return result
- return %style_for_target;
+ return $number;
+}
+
+sub testvalue {
+
+ my ($number,$zeroth,$second,@values) = @_;
+ my $current_content = $values[$number];
+ if ($zeroth eq 'S') {
+ my %tempo_hash = %$second;
+ while ((my $current_k,my $current_v) = each %tempo_hash) {
+ $current_content =~ s/\$$current_k/$current_v/g;
+ }
+ } elsif ($zeroth eq 'E') {
+ $current_content = $values[$number];
+ }
+ return $current_content;
}
1;
+
__END__