--- loncom/xml/style.pm 2000/06/26 15:21:28 1.1
+++ loncom/xml/style.pm 2000/10/26 14:01:40 1.6
@@ -1,149 +1,171 @@
# The LearningOnline Network with CAPA
# Style Parser Module
#
-# last modified 06/23/00 by Alexander Sakharuk
+# last modified 06/29/00 by Alexander Sakharuk
-package Apache::lonstyleparser;
+package Apache::style;
use strict;
use HTML::TokeParser;
-#============================================================= style subroutine
-
sub styleparser {
my ($target,$content_style_string) = @_;
-
-#------------------------------------------- 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 @target_list = ('target','web','tex','edit','modified','rat','answer','metadis');
my @value_style = ();
my $current_key = '';
my $current_value = '';
my $stoken;
my $flag;
my $iele;
+ my $flag_target;
my $pstyle = HTML::TokeParser->new(\$content_style_string);
while ($stoken = $pstyle->get_token) {
-#----------------------------------------------------- start for tag definition
+# start for tag definition
if ($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;
+# 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 $stoken->[1] ne 'meta') {
+ if ($stoken->[0] eq 'T') {
+ $current_value .= $stoken->[1];
+ } elsif ($stoken->[0] eq 'S') {
+ $current_value .= $stoken->[4];
+ } else {
+ $current_value .= $stoken->[2];
}
- }
- if ($flagelem == 0) {
- $current_value .= $stoken->[2];
- } else {
- $current_value .= $value_style[$iele];
- }
- }
- if ($stoken->[0] eq 'T') {
- $current_value .= $stoken->[1];
- }
- } else {
- last;
- }
- }
- } elsif ($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 ($stoken->[0] eq 'S') {
- last;
+ } else {
+# render output
+ while ($stoken = $pstyle->get_token and $stoken->[1] ne 'render') {
+ if ($stoken->[1] eq 'definetag') {
+ $flag = 1;
+ last;
+ }
+ }
+ if ($flag == 0) {
+ while ($stoken = $pstyle->get_token and $stoken->[1] ne 'definetag'
+ and $stoken->[1] ne 'render') {
+# if token not equal to target $flag_target=0
+ $flag_target = 0;
+ for (my $i=0; $i<$#target_list; $i++) {
+ if ($stoken->[1] eq $target_list[$i]) {
+ $flag_target = 1;
+ }
+ }
+ if ($flag_target == 0) {
+# target not found
+ my $tempo_out = &test($stoken->[0],$stoken->[1],$stoken->[2],$stoken->[4],@value_style);
+ $current_value .= $tempo_out;
+ } else {
+# target found
+ if ($stoken->[0] eq 'S' and $stoken->[1] eq 'target') {
+# target defined via <target> tag
+ if (defined $stoken->[2]{dest}) {
+ if (index($stoken->[2]{dest},$target) == -1) {
+ while ($stoken = $pstyle->get_token and $stoken->[1] ne 'target') {
+ }
+ } elsif (index($stoken->[2]{dest},$target) != -1) {
+ while ($stoken = $pstyle->get_token and $stoken->[1] ne 'target') {
+ my $tempo_out = &test($stoken->[0],$stoken->[1],$stoken->[2],$stoken->[4],@value_style);
+ $current_value .= $tempo_out;
+ }
+ }
+ } else {
+ if (index($stoken->[2]{excl},$target) != -1) {
+ while ($stoken = $pstyle->get_token and $stoken->[1] ne 'target') {
+ }
+ } elsif (index($stoken->[2]{excl},$target) == -1) {
+ while ($stoken = $pstyle->get_token and $stoken->[1] ne 'target') {
+ my $tempo_out = &test($stoken->[0],$stoken->[1],$stoken->[2],$stoken->[4],@value_style);
+ $current_value .= $tempo_out;
+ }
+ }
+
+
+ }
+ } elsif ($stoken->[1] ne $target) {
+#target defined via short-form tag
+ my $tempo_token = $stoken->[1];
+ while ($stoken = $pstyle->get_token and $stoken->[1] ne $tempo_token) {
+ }
+ } else {
+ my $tempo_token = $stoken->[1];
+ while ($stoken = $pstyle->get_token and $stoken->[1] ne $tempo_token) {
+ my $tempo_out = &test($stoken->[0],$stoken->[1],$stoken->[2],$stoken->[4],@value_style);
+ $current_value .= $tempo_out;
+ }
+ }
+ }
}
- }
-
+
}
- }
- }
-
+ }
}
$current_value =~ s/(\s)+/$1/g;
- if ($current_value ne ' ' and $current_value ne '' ) {
+ if ($current_value ne '' ) {
push (@value_style,lc $current_key,$current_value);
- }
- $current_key = '';
- $current_value = '';
-
+ }
+ $current_key = '';
+ $current_value = '';
}
my %style_for_target = @value_style;
-#--------------------------------------------------------------- check printing
+# check printing
# while (($current_key,$current_value) = each %style_for_target) {
-# print "$current_key => $current_value\n";
+# print "$current_key => $current_value\n";
# }
-#---------------------------------------------------------------- return result
+# return result
return %style_for_target;
}
+sub test {
+
+ my ($zeroth,$first,$second,$fourth,@value_style) = @_;
+ my $current_value = '';
+ my $num;
+ my $flag;
+
+ if ($zeroth eq 'T') {
+ $current_value .= $first;
+ } elsif ($zeroth eq 'S') {
+ $flag = 0;
+ for (my $i=$#value_style-1;$i>=0;$i=$i-2) {
+ if ($first eq $value_style[$i]) {
+ $flag = 1;
+ $num = $i + 1;
+ last;
+ }
+ }
+ if ($flag == 0) {
+ $current_value .= $fourth;
+ } else {
+ $current_value .= $value_style[$num];
+ }
+ } elsif ($zeroth eq 'E') {
+ $flag = 0;
+ for (my $i=$#value_style-1;$i>=0;$i=$i-2) {
+ if ($first eq $value_style[$i]) {
+ $flag = 1;
+ $num = $i + 1;
+ last;
+ }
+ }
+ if ($flag == 0) {
+ $current_value .= $second;
+ } else {
+ $current_value .= $value_style[$num];
+ }
+ }
+ return $current_value;
+}
+
1;
__END__