Annotation of loncom/xml/style.pm, revision 1.22
1.1 sakharuk 1: # The LearningOnline Network with CAPA
1.7 sakharuk 2: # Style Parser Module (new version)
3: #
1.22 ! jms 4: # $Id: style.pm,v 1.21 2004/01/21 13:03:29 sakharuk Exp $
1.13 www 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
1.7 sakharuk 39: # written 01/08/01 by Alexander Sakharuk
1.1 sakharuk 40: #
41:
1.7 sakharuk 42: package Apache::style;
1.1 sakharuk 43:
44: use strict;
45: use HTML::TokeParser;
46:
47: sub styleparser {
48:
1.18 sakharuk 49: my ($target,$content_style_string)=@_;
1.7 sakharuk 50: my @keys = ();
51: my @values = ();
1.18 sakharuk 52: my $current_value;
53: my $allow=0;
54: my $pstyle = HTML::TokeParser->new(\$content_style_string);
1.21 sakharuk 55: $pstyle->xml_mode('1');
1.18 sakharuk 56: while (my $stoken = $pstyle->get_token) {
57: if (($stoken->[0] eq 'S') && ($stoken->[1] eq 'definetag')) {
58: push @keys,$stoken->[2]->{'name'};
59: $current_value='';
60: $allow=0;
61: } elsif (($stoken->[0] eq 'E') && ($stoken->[1] eq 'definetag')) {
62: $current_value =~ s/(\s)+/$1/g;
63: $current_value =~ s/\n//g;
64: push(@values,$current_value);
65: } elsif (($target eq 'meta') && ($stoken->[0] eq 'S') && ($stoken->[1] eq 'meta')) {
66: $allow=1;
67: } elsif (($target eq 'meta') && ($stoken->[0] eq 'E') && ($stoken->[1] eq 'meta')) {
68: $allow=0;
69: } elsif (($target ne 'meta') && ($stoken->[0] eq 'S') && ($stoken->[1] eq 'render')) {
70: $allow=1;
71: } elsif (($target ne 'meta') && ($stoken->[0] eq 'E') && ($stoken->[1] eq 'render')) {
72: $allow=0;
73: } elsif (($target ne 'meta') && ($target ne 'web') && ($stoken->[0] eq 'S') && ($stoken->[1] eq 'web')) {
74: $allow=0;
75: } elsif (($target ne 'meta') && ($target ne 'web') && ($stoken->[0] eq 'E') && ($stoken->[1] eq 'web')) {
76: $allow=1;
77: } elsif (($target ne 'meta') && ($target ne 'tex') && ($stoken->[0] eq 'S') && ($stoken->[1] eq 'tex')) {
78: $allow=0;
79: } elsif (($target ne 'meta') && ($target ne 'tex') && ($stoken->[0] eq 'E') && ($stoken->[1] eq 'tex')) {
80: $allow=1;
1.19 sakharuk 81: } elsif (($stoken->[0] eq 'S') && ($stoken->[1] eq 'target') && (not $stoken->[2]->{'name'}=~/(^\s*$target\s*,|,\s*$target\s*,|,\s*$target\s*$|^\s*$target\s*$)/)) {
1.18 sakharuk 82: $allow=0;
83: } elsif (($stoken->[0] eq 'E') && ($stoken->[1] eq 'target')) {
84: $allow=1;
85: } elsif (($target ne 'meta') && ($stoken->[0] eq 'S') && ($stoken->[1] eq $target)) {
86: $allow=1;
87: } elsif (($target ne 'meta') && ($stoken->[0] eq 'E') && ($stoken->[1] eq $target)) {
1.19 sakharuk 88: } elsif (($stoken->[0] eq 'S') && ($stoken->[1] eq 'target') && ($stoken->[2]->{'name'}=~/(^\s*$target\s*,|,\s*$target\s*,|,\s*$target\s*$|^\s*$target\s*$)/)) {
1.18 sakharuk 89: $allow=1;
90: } elsif ($allow) {
91: if ($stoken->[0] eq 'T') {
92: $current_value .= $stoken->[1];
93: } elsif ($stoken->[0] eq 'S') {
94: my $number=-1;
95: if ($stoken->[1] ne $keys[-1]) {
96: $number = &testkey($stoken->[0],$stoken->[1],@keys);
97: }
98: if ($number != -1) {
99: $current_value .= &testvalue($number,$stoken->[0],$stoken->[2],@values);
100: } else {
101: $current_value .= $stoken->[4];
102: }
103: } elsif ($stoken->[0] eq 'E') {
104: my $number=-1;
105: if (('/'.$stoken->[1]) ne $keys[-1]) {
106: $number = &testkey($stoken->[0],$stoken->[1],@keys);
107: }
108: if ($number != -1) {
109: $current_value .= &testvalue($number,$stoken->[0],$stoken->[2],@values);
110: } else {
111: $current_value .= $stoken->[2];
112: }
1.14 albertel 113: }
1.4 sakharuk 114: }
1.7 sakharuk 115: }
1.20 albertel 116: my %style_for_target;
1.7 sakharuk 117: for (my $i=0; $i<=$#keys; $i++) {
1.20 albertel 118: if ($values[$i] !~ /^\s*$/) {
119: $style_for_target{$keys[$i]}=$values[$i];
120: }
1.7 sakharuk 121: }
1.18 sakharuk 122: return %style_for_target;
123: }
1.7 sakharuk 124:
1.4 sakharuk 125:
1.7 sakharuk 126: sub testkey {
1.4 sakharuk 127:
1.7 sakharuk 128: my ($zeroth,$first,@keys) = @_;
129: my $number = -1;
130: if ($zeroth eq 'S') {
131: for (my $i=$#keys; $i>=0; $i=$i-1) {
132: if ($first eq lc($keys[$i])) {
133: $number = $i;
134: last;
1.4 sakharuk 135: }
1.7 sakharuk 136: }
137: } elsif ($zeroth eq 'E') {
138: for (my $i=$#keys; $i>=0; $i=$i-1) {
139: if ('/'.$first eq lc($keys[$i])) {
140: $number = $i;
141: last;
1.4 sakharuk 142: }
1.7 sakharuk 143: }
144: }
145: return $number;
146: }
147:
148: sub testvalue {
149:
150: my ($number,$zeroth,$second,@values) = @_;
151: my $current_content = $values[$number];
152: if ($zeroth eq 'S') {
1.14 albertel 153: my %tempo_hash = %$second;
154: while ((my $current_k,my $current_v) = each %tempo_hash) {
155: $current_content =~ s/\$$current_k/$current_v/g;
156: }
1.7 sakharuk 157: } elsif ($zeroth eq 'E') {
1.14 albertel 158: $current_content = $values[$number];
1.7 sakharuk 159: }
160: return $current_content;
1.1 sakharuk 161: }
162:
163: 1;
1.7 sakharuk 164:
1.1 sakharuk 165: __END__
1.22 ! jms 166:
! 167: =pod
! 168:
! 169: =head1 NAME
! 170:
! 171: Apache::style.pm
! 172:
! 173: =head1 SYNOPSIS
! 174:
! 175: Style parsing module
! 176:
! 177: This is part of the LearningOnline Network with CAPA project
! 178: described at http://www.lon-capa.org.
! 179:
! 180:
! 181: =head1 SUBROUTINES
! 182:
! 183: =over
! 184:
! 185: =item styleparser()
! 186:
! 187: =item testkey()
! 188:
! 189: =item testvalue()
! 190:
! 191: =back
! 192:
! 193: =cut
! 194:
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