Annotation of loncom/xml/style.pm, revision 1.15
1.1 sakharuk 1: # The LearningOnline Network with CAPA
1.7 sakharuk 2: # Style Parser Module (new version)
3: #
1.15 ! albertel 4: # $Id: style.pm,v 1.14 2002/10/16 20:37:46 albertel 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:
1.7 sakharuk 49: my ($target,$content_style_string) = @_;
50: my $current_key = '';
51: my $current_value = '';
52: my @keys = ();
53: my @values = ();
54: my @style_array = ();
55: my $stoken;
56:
57: my $b_pos;
58: my $e_pos;
59: my $entry;
60:
61: $b_pos = index($content_style_string,'<definetag',0);
62: while ($b_pos != -1) {
63: $e_pos = index($content_style_string,'</definetag',$b_pos);
64: $entry = substr($content_style_string,$b_pos,$e_pos-$b_pos+12);
65: $_ = $entry;
66: m/<definetag\s+name\s*=\s*\"([^\"]*)\"/;
67: $current_key = $1;
68: push @keys,$current_key;
1.8 albertel 69: # &Apache::lonxml::debug("$current_key\n");
1.7 sakharuk 70: my $b_position = index($entry,'<'.$target.'>',0);
71: my $e_position = index($entry,'</'.$target.'>',$b_position);
72: my $target_length = length($target) + 2;
73: if ($b_position > -1) {
74: my $entry_target = substr($entry,$b_position+$target_length,$e_position-$b_position-$target_length);
75: my $pstyle = HTML::TokeParser->new(\$entry_target);
76: while ($stoken = $pstyle->get_token) {
77: if ($stoken->[0] eq 'T') {
78: $current_value .= $stoken->[1];
79: } elsif ($stoken->[0] eq 'S') {
1.14 albertel 80: my $number=-1;
81: if ($stoken->[1] ne "$current_key") {
82: $number = &testkey($stoken->[0],$stoken->[1],@keys);
83: }
1.7 sakharuk 84: if ($number != -1) {
85: $current_value .= &testvalue($number,$stoken->[0],$stoken->[2],@values);
86: } else {
87: $current_value .= $stoken->[4];
1.14 albertel 88: }
1.7 sakharuk 89: } else {
1.14 albertel 90: my $number=-1;
91: if (('/'.$stoken->[1]) ne "$current_key") {
92: $number = &testkey($stoken->[0],$stoken->[1],@keys);
93: }
1.7 sakharuk 94: if ($number != -1) {
95: $current_value .= &testvalue($number,$stoken->[0],$stoken->[2],@values);
1.4 sakharuk 96: } else {
1.7 sakharuk 97: $current_value .= $stoken->[2];
1.14 albertel 98: }
1.7 sakharuk 99: }
1.14 albertel 100: }
1.4 sakharuk 101: }
1.9 sakharuk 102: $current_value =~ s/\n//g;
1.12 sakharuk 103: ###########
104: # $current_value =~ s/^\s*//g;
105: # $current_value =~ s/\s*$//g;
106: # $current_value =~ s/\( (\w)/($1/g;
107: ###########
1.15 ! albertel 108: if ($current_value) {
! 109: push(@values,$current_value);
! 110: &Apache::lonxml::debug("a:$current_value: $#values \n");
! 111: } else {
! 112: pop(@keys);
! 113: }
1.7 sakharuk 114: $current_key = '';
115: $current_value ='';
116: $b_pos = index($content_style_string,'<definetag',$b_pos+1);
117: }
118:
119: for (my $i=0; $i<=$#keys; $i++) {
1.11 sakharuk 120: push @style_array,$keys[$i],$values[$i];
1.7 sakharuk 121: }
1.9 sakharuk 122: my %style_for_target = @style_array;
1.1 sakharuk 123:
1.4 sakharuk 124: # check printing
1.11 sakharuk 125: # foreach $current_key (sort keys %style_for_target) {
126: # &Apache::lonxml::debug("$current_key => $style_for_target{$current_key}\n");
127: # }
1.4 sakharuk 128: # return result
1.1 sakharuk 129: return %style_for_target;
1.7 sakharuk 130:
1.4 sakharuk 131: }
132:
1.7 sakharuk 133: sub testkey {
1.4 sakharuk 134:
1.7 sakharuk 135: my ($zeroth,$first,@keys) = @_;
136: my $number = -1;
137: if ($zeroth eq 'S') {
138: for (my $i=$#keys; $i>=0; $i=$i-1) {
139: if ($first eq lc($keys[$i])) {
140: $number = $i;
141: last;
1.4 sakharuk 142: }
1.7 sakharuk 143: }
144: } elsif ($zeroth eq 'E') {
145: for (my $i=$#keys; $i>=0; $i=$i-1) {
146: if ('/'.$first eq lc($keys[$i])) {
147: $number = $i;
148: last;
1.4 sakharuk 149: }
1.7 sakharuk 150: }
151: }
152: return $number;
153: }
154:
155: sub testvalue {
156:
157: my ($number,$zeroth,$second,@values) = @_;
158: my $current_content = $values[$number];
159: if ($zeroth eq 'S') {
1.14 albertel 160: my %tempo_hash = %$second;
161: while ((my $current_k,my $current_v) = each %tempo_hash) {
162: $current_content =~ s/\$$current_k/$current_v/g;
163: }
1.7 sakharuk 164: } elsif ($zeroth eq 'E') {
1.14 albertel 165: $current_content = $values[$number];
1.7 sakharuk 166: }
167: return $current_content;
1.1 sakharuk 168: }
169:
170: 1;
1.7 sakharuk 171:
1.1 sakharuk 172: __END__
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