version 1.54, 2001/02/19 20:40:55
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version 1.56, 2001/03/13 22:44:24
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Line 4
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Line 4
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# last modified 06/26/00 by Alexander Sakharuk |
# last modified 06/26/00 by Alexander Sakharuk |
# 11/6 Gerd Kortemeyer |
# 11/6 Gerd Kortemeyer |
# 6/1/1 Gerd Kortemeyer |
# 6/1/1 Gerd Kortemeyer |
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# 2/21,3/13 Guy |
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package Apache::lonxml; |
package Apache::lonxml; |
use vars |
use vars |
qw(@pwd $outputstack $redirection $textredirection $on_offimport @extlinks); |
qw(@pwd @outputstack $redirection $textredirection $import @extlinks); |
use strict; |
use strict; |
use HTML::TokeParser; |
use HTML::TokeParser; |
use Safe; |
use Safe; |
Line 38 use Apache::londefdef;
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Line 39 use Apache::londefdef;
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use Apache::scripttag; |
use Apache::scripttag; |
#================================================== Main subroutine: xmlparse |
#================================================== Main subroutine: xmlparse |
@pwd=(); |
@pwd=(); |
$outputstack = ''; |
@outputstack = (); |
$redirection = 1; |
$redirection = 0; |
$textredirection = 1; |
$import = 1; |
$on_offimport = 0; |
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@extlinks=(); |
@extlinks=(); |
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sub xmlparse { |
sub xmlparse { |
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my ($target,$content_file_string,$safeinit,%style_for_target) = @_; |
my ($target,$content_file_string,$safeinit,%style_for_target) = @_; |
if ($target eq 'meta') { |
if ($target eq 'meta') { |
$Apache::lonxml::textredirection = 0; |
&startredirection; |
$Apache::lonxml::on_offimport = 1; |
$Apache::lonxml::import = 0; |
} elsif ($target eq 'grade') { |
} elsif ($target eq 'grade') { |
$Apache::lonxml::textredirection = 0; |
&startredirection; |
$Apache::lonxml::on_offimport = 0; |
$Apache::lonxml::import = 1; |
} else { |
} else { |
$Apache::lonxml::textredirection = 1; |
$Apache::lonxml::redirection = 0; |
$Apache::lonxml::on_offimport = 0; |
$Apache::lonxml::import = 1; |
} |
} |
#&printalltags(); |
#&printalltags(); |
my @pars = (); |
my @pars = (); |
Line 90 sub xmlparse {
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Line 90 sub xmlparse {
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while ( $#pars > -1 ) { |
while ( $#pars > -1 ) { |
while ($token = $pars[$#pars]->get_token) { |
while ($token = $pars[$#pars]->get_token) { |
if ($token->[0] eq 'T') { |
if ($token->[0] eq 'T') { |
if ($Apache::lonxml::textredirection == 1) {$result=$token->[1];} |
$result=$token->[1]; |
# $finaloutput .= &Apache::run::evaluate($token->[1],$safeeval,''); |
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} elsif ($token->[0] eq 'S') { |
} elsif ($token->[0] eq 'S') { |
# if ($target eq 'meta' and $token->[2]->{metaout} eq 'ON') {$Apache::lonxml::textredirection = 1;} |
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# add tag to stack |
# add tag to stack |
push (@stack,$token->[1]); |
push (@stack,$token->[1]); |
# add parameters list to another stack |
# add parameters list to another stack |
push (@parstack,&parstring($token)); |
push (@parstack,&parstring($token)); |
&increasedepth($token); |
&increasedepth($token); |
if (exists $style_for_target{$token->[1]}) { |
if (exists $style_for_target{$token->[1]}) { |
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if ($Apache::lonxml::redirection) { |
if ($Apache::lonxml::redirection == 1) { |
$Apache::lonxml::outputstack['-1'] .= |
$finaloutput .= &recurse($style_for_target{$token->[1]}, |
&recurse($style_for_target{$token->[1]},$target,$safeeval, |
$target,$safeeval,\%style_for_target, |
\%style_for_target,@parstack); |
@parstack); |
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} else { |
} else { |
$Apache::lonxml::outputstack .= &recurse($style_for_target{$token->[1]}, |
$finaloutput .= &recurse($style_for_target{$token->[1]},$target, |
$target,$safeeval,\%style_for_target, |
$safeeval,\%style_for_target,@parstack); |
@parstack); |
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} |
} |
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} else { |
} else { |
$result = &callsub("start_$token->[1]", $target, $token,\@parstack, |
$result = &callsub("start_$token->[1]", $target, $token,\@parstack, |
\@pars, $safeeval, \%style_for_target); |
\@pars, $safeeval, \%style_for_target); |
} |
} |
} elsif ($token->[0] eq 'E') { |
} elsif ($token->[0] eq 'E') { |
#if ($target eq 'meta') {$Apache::lonxml::textredirection = 0;} |
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#clear out any tags that didn't end |
#clear out any tags that didn't end |
while ($token->[1] ne $stack[$#stack] |
while ($token->[1] ne $stack[$#stack] && ($#stack > -1)) { |
&& ($#stack > -1)) { |
&Apache::lonxml::warning("Unbalanced tags in resource $stack['-1']"); |
&Apache::lonxml::warning("Unbalanced tags in resource $stack['-1']"); |
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pop @stack;pop @parstack;&decreasedepth($token); |
pop @stack;pop @parstack;&decreasedepth($token); |
} |
} |
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if (exists $style_for_target{'/'."$token->[1]"}) { |
if (exists $style_for_target{'/'."$token->[1]"}) { |
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if ($Apache::lonxml::redirection) { |
if ($Apache::lonxml::redirection == 1) { |
$Apache::lonxml::outputstack['-1'] .= |
$finaloutput .= &recurse($style_for_target{'/'."$token->[1]"}, |
&recurse($style_for_target{'/'."$token->[1]"}, |
$target,$safeeval,\%style_for_target, |
$target,$safeeval,\%style_for_target,@parstack); |
@parstack); |
} else { |
} else { |
$finaloutput .= &recurse($style_for_target{'/'."$token->[1]"}, |
$Apache::lonxml::outputstack .= &recurse($style_for_target{'/'."$token->[1]"}, |
$target,$safeeval,\%style_for_target, |
$target,$safeeval,\%style_for_target, |
@parstack); |
@parstack); |
} |
} |
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} else { |
} else { |
$result = &callsub("end_$token->[1]", $target, $token, \@parstack, |
$result = &callsub("end_$token->[1]", $target, $token, \@parstack, |
\@pars,$safeeval, \%style_for_target); |
\@pars,$safeeval, \%style_for_target); |
} |
} |
} |
} |
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#evaluate variable refs in result |
if ($result ne "") { |
if ($result ne "") { |
if ( $#parstack > -1 ) { |
if ( $#parstack > -1 ) { |
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if ($Apache::lonxml::redirection) { |
if ($Apache::lonxml::redirection == 1) { |
$Apache::lonxml::outputstack['-1'] .= |
$finaloutput .= &Apache::run::evaluate($result,$safeeval, |
&Apache::run::evaluate($result,$safeeval,$parstack[$#parstack]); |
$parstack[$#parstack]); |
} else { |
} else { |
$finaloutput .= &Apache::run::evaluate($result,$safeeval, |
$Apache::lonxml::outputstack .= &Apache::run::evaluate($result,$safeeval, |
$parstack[$#parstack]); |
$parstack[$#parstack]); |
} |
} |
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} else { |
} else { |
$finaloutput .= &Apache::run::evaluate($result,$safeeval,''); |
$finaloutput .= &Apache::run::evaluate($result,$safeeval,''); |
} |
} |
$result = ''; |
$result = ''; |
} else { |
} |
$finaloutput .= $result; |
if ($token->[0] eq 'E') { |
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pop @stack;pop @parstack;&decreasedepth($token); |
} |
} |
if ($token->[0] eq 'E') { pop @stack;pop @parstack;&decreasedepth($token);} |
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} |
} |
pop @pars; |
pop @pars; |
pop @Apache::lonxml::pwd; |
pop @Apache::lonxml::pwd; |
Line 182 sub recurse {
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Line 173 sub recurse {
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while ( $#pat > -1 ) { |
while ( $#pat > -1 ) { |
while ($tokenpat = $pat[$#pat]->get_token) { |
while ($tokenpat = $pat[$#pat]->get_token) { |
if ($tokenpat->[0] eq 'T') { |
if ($tokenpat->[0] eq 'T') { |
if ($Apache::lonxml::textredirection == 1) {$partstring = $tokenpat->[1];} |
$partstring = $tokenpat->[1]; |
} elsif ($tokenpat->[0] eq 'S') { |
} elsif ($tokenpat->[0] eq 'S') { |
push (@innerstack,$tokenpat->[1]); |
push (@innerstack,$tokenpat->[1]); |
push (@innerparstack,&parstring($tokenpat)); |
push (@innerparstack,&parstring($tokenpat)); |
Line 254 sub callsub {
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Line 245 sub callsub {
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return $currentstring; |
return $currentstring; |
} |
} |
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sub startredirection { |
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$Apache::lonxml::redirection++; |
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push (@Apache::lonxml::outputstack, ''); |
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} |
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sub endredirection { |
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if (!$Apache::lonxml::redirection) { |
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&Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuggin information:".join ":",caller); |
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return ''; |
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} |
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$Apache::lonxml::redirection--; |
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pop @Apache::lonxml::outputstack; |
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} |
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sub initdepth { |
sub initdepth { |
@Apache::lonxml::depthcounter=(); |
@Apache::lonxml::depthcounter=(); |
$Apache::lonxml::depth=-1; |
$Apache::lonxml::depth=-1; |
Line 318 sub get_all_text {
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Line 323 sub get_all_text {
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sub newparser { |
sub newparser { |
my ($parser,$contentref,$dir) = @_; |
my ($parser,$contentref,$dir) = @_; |
push (@$parser,HTML::TokeParser->new($contentref)); |
push (@$parser,HTML::TokeParser->new($contentref)); |
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$$parser['-1']->xml_mode('1'); |
if ( $dir eq '' ) { |
if ( $dir eq '' ) { |
push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]); |
push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]); |
} else { |
} else { |
Line 407 sub debug {
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Line 413 sub debug {
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sub error { |
sub error { |
if ($Apache::lonxml::debug eq 1) { |
if ($Apache::lonxml::debug eq 1) { |
print "ERROR:".$_[0]."<br />\n"; |
print "<b>ERROR:</b>".$_[0]."<br />\n"; |
} else { |
} else { |
print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />"; |
print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />"; |
#notify author |
#notify author |
Line 429 sub error {
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Line 435 sub error {
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sub warning { |
sub warning { |
if ($Apache::lonxml::debug eq 1) { |
if ($Apache::lonxml::debug eq 1) { |
print "WARNING:".$_[0]."<br />\n"; |
print "<b>W</b>ARNING<b>:</b>".$_[0]."<br />\n"; |
} |
} |
} |
} |
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