--- loncom/xml/style.pm 2001/01/09 14:10:14 1.7
+++ loncom/xml/style.pm 2008/11/24 18:55:01 1.22
@@ -1,6 +1,41 @@
# The LearningOnline Network with CAPA
# Style Parser Module (new version)
#
+# $Id: style.pm,v 1.22 2008/11/24 18:55:01 jms 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
#
@@ -11,77 +46,83 @@ use HTML::TokeParser;
sub styleparser {
- my ($target,$content_style_string) = @_;
- my $current_key = '';
- my $current_value = '';
+ my ($target,$content_style_string)=@_;
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;
-# print "$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 $number = &testkey($stoken->[0],$stoken->[1],@keys);
- if ($number != -1) {
- $current_value .= &testvalue($number,$stoken->[0],$stoken->[2],@values);
- } else {
- $current_value .= $stoken->[4];
- }
- } else {
- my $number = &testkey($stoken->[0],$stoken->[1],@keys);
- if ($number != -1) {
- $current_value .= &testvalue($number,$stoken->[0],$stoken->[2],@values);
- } else {
- $current_value .= $stoken->[2];
- }
- }
-
-
-
- }
+ my $current_value;
+ my $allow=0;
+ my $pstyle = HTML::TokeParser->new(\$content_style_string);
+ $pstyle->xml_mode('1');
+ while (my $stoken = $pstyle->get_token) {
+ if (($stoken->[0] eq 'S') && ($stoken->[1] eq 'definetag')) {
+ push @keys,$stoken->[2]->{'name'};
+ $current_value='';
+ $allow=0;
+ } elsif (($stoken->[0] eq 'E') && ($stoken->[1] eq 'definetag')) {
+ $current_value =~ s/(\s)+/$1/g;
+ $current_value =~ s/\n//g;
+ push(@values,$current_value);
+ } elsif (($target eq 'meta') && ($stoken->[0] eq 'S') && ($stoken->[1] eq 'meta')) {
+ $allow=1;
+ } elsif (($target eq 'meta') && ($stoken->[0] eq 'E') && ($stoken->[1] eq 'meta')) {
+ $allow=0;
+ } elsif (($target ne 'meta') && ($stoken->[0] eq 'S') && ($stoken->[1] eq 'render')) {
+ $allow=1;
+ } elsif (($target ne 'meta') && ($stoken->[0] eq 'E') && ($stoken->[1] eq 'render')) {
+ $allow=0;
+ } elsif (($target ne 'meta') && ($target ne 'web') && ($stoken->[0] eq 'S') && ($stoken->[1] eq 'web')) {
+ $allow=0;
+ } elsif (($target ne 'meta') && ($target ne 'web') && ($stoken->[0] eq 'E') && ($stoken->[1] eq 'web')) {
+ $allow=1;
+ } elsif (($target ne 'meta') && ($target ne 'tex') && ($stoken->[0] eq 'S') && ($stoken->[1] eq 'tex')) {
+ $allow=0;
+ } elsif (($target ne 'meta') && ($target ne 'tex') && ($stoken->[0] eq 'E') && ($stoken->[1] eq 'tex')) {
+ $allow=1;
+ } elsif (($stoken->[0] eq 'S') && ($stoken->[1] eq 'target') && (not $stoken->[2]->{'name'}=~/(^\s*$target\s*,|,\s*$target\s*,|,\s*$target\s*$|^\s*$target\s*$)/)) {
+ $allow=0;
+ } elsif (($stoken->[0] eq 'E') && ($stoken->[1] eq 'target')) {
+ $allow=1;
+ } elsif (($target ne 'meta') && ($stoken->[0] eq 'S') && ($stoken->[1] eq $target)) {
+ $allow=1;
+ } elsif (($target ne 'meta') && ($stoken->[0] eq 'E') && ($stoken->[1] eq $target)) {
+ } elsif (($stoken->[0] eq 'S') && ($stoken->[1] eq 'target') && ($stoken->[2]->{'name'}=~/(^\s*$target\s*,|,\s*$target\s*,|,\s*$target\s*$|^\s*$target\s*$)/)) {
+ $allow=1;
+ } elsif ($allow) {
+ if ($stoken->[0] eq 'T') {
+ $current_value .= $stoken->[1];
+ } elsif ($stoken->[0] eq 'S') {
+ my $number=-1;
+ if ($stoken->[1] ne $keys[-1]) {
+ $number = &testkey($stoken->[0],$stoken->[1],@keys);
+ }
+ if ($number != -1) {
+ $current_value .= &testvalue($number,$stoken->[0],$stoken->[2],@values);
+ } else {
+ $current_value .= $stoken->[4];
+ }
+ } elsif ($stoken->[0] eq 'E') {
+ my $number=-1;
+ if (('/'.$stoken->[1]) ne $keys[-1]) {
+ $number = &testkey($stoken->[0],$stoken->[1],@keys);
+ }
+ if ($number != -1) {
+ $current_value .= &testvalue($number,$stoken->[0],$stoken->[2],@values);
+ } else {
+ $current_value .= $stoken->[2];
+ }
+ }
}
- push @values,$current_value;
-# print "a:$current_value $#values \n";
- $current_key = '';
- $current_value ='';
- $b_pos = index($content_style_string,'<definetag',$b_pos+1);
}
-
+ my %style_for_target;
for (my $i=0; $i<=$#keys; $i++) {
- push @style_array,$keys[$i],$values[$i];
+ if ($values[$i] !~ /^\s*$/) {
+ $style_for_target{$keys[$i]}=$values[$i];
+ }
}
- my %style_for_target = @style_array;
-
-# check printing
- while (($current_key,$current_value) = each %style_for_target) {
- print "$current_key => $current_value\n";
- }
-# return result
- return %style_for_target;
-
+ return %style_for_target;
}
+
sub testkey {
my ($zeroth,$first,@keys) = @_;
@@ -109,12 +150,12 @@ sub testvalue {
my ($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/$current_v/g;
- }
+ my %tempo_hash = %$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];
+ $current_content = $values[$number];
}
return $current_content;
}
@@ -122,3 +163,32 @@ sub testvalue {
1;
__END__
+
+=pod
+
+=head1 NAME
+
+Apache::style.pm
+
+=head1 SYNOPSIS
+
+Style parsing module
+
+This is part of the LearningOnline Network with CAPA project
+described at http://www.lon-capa.org.
+
+
+=head1 SUBROUTINES
+
+=over
+
+=item styleparser()
+
+=item testkey()
+
+=item testvalue()
+
+=back
+
+=cut
+