File:
[LON-CAPA] /
loncom /
xml /
style.pm
Revision
1.22:
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Mon Nov 24 18:55:01 2008 UTC (15 years, 8 months ago) by
jms
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MAIN
CVS tags:
version_2_9_X,
version_2_9_99_0,
version_2_9_1,
version_2_9_0,
version_2_8_99_1,
version_2_8_99_0,
version_2_12_X,
version_2_11_X,
version_2_11_5_msu,
version_2_11_5,
version_2_11_4_uiuc,
version_2_11_4_msu,
version_2_11_4,
version_2_11_3_uiuc,
version_2_11_3_msu,
version_2_11_3,
version_2_11_2_uiuc,
version_2_11_2_msu,
version_2_11_2_educog,
version_2_11_2,
version_2_11_1,
version_2_11_0_RC3,
version_2_11_0_RC2,
version_2_11_0_RC1,
version_2_11_0,
version_2_10_X,
version_2_10_1,
version_2_10_0_RC2,
version_2_10_0_RC1,
version_2_10_0,
loncapaMITrelate_1,
language_hyphenation_merge,
language_hyphenation,
bz6209-base,
bz6209,
bz5969,
bz2851,
PRINT_INCOMPLETE_base,
PRINT_INCOMPLETE,
HEAD,
GCI_3,
GCI_2,
BZ5971-printing-apage,
BZ5434-fox,
BZ4492-merge,
BZ4492-feature_horizontal_radioresponse
Added/modified POD comments
# 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
#
package Apache::style;
use strict;
use HTML::TokeParser;
sub styleparser {
my ($target,$content_style_string)=@_;
my @keys = ();
my @values = ();
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];
}
}
}
}
my %style_for_target;
for (my $i=0; $i<=$#keys; $i++) {
if ($values[$i] !~ /^\s*$/) {
$style_for_target{$keys[$i]}=$values[$i];
}
}
return %style_for_target;
}
sub testkey {
my ($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 = $i;
last;
}
}
} elsif ($zeroth eq 'E') {
for (my $i=$#keys; $i>=0; $i=$i-1) {
if ('/'.$first eq lc($keys[$i])) {
$number = $i;
last;
}
}
}
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__
=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
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