version 1.34, 2000/11/06 17:03:29
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version 1.45, 2001/01/06 15:31:27
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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 |
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# 6/1/1 Gerd Kortemeyer |
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package Apache::lonxml; |
package Apache::lonxml; |
use vars |
use vars |
Line 10 qw(@pwd $outputstack $redirection $textr
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Line 11 qw(@pwd $outputstack $redirection $textr
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use strict; |
use strict; |
use HTML::TokeParser; |
use HTML::TokeParser; |
use Safe; |
use Safe; |
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use Safe::Hole; |
use Opcode; |
use Opcode; |
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use Apache::Constants(:common); |
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sub register { |
sub register { |
my $space; |
my $space; |
Line 38 $on_offimport = 0;
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Line 41 $on_offimport = 0;
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sub xmlparse { |
sub xmlparse { |
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my ($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; |
$Apache::lonxml::textredirection = 0; |
$Apache::lonxml::on_offimport = 1; |
$Apache::lonxml::on_offimport = 1; |
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} else { |
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$Apache::lonxml::textredirection = 1; |
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$Apache::lonxml::on_offimport = 0; |
} |
} |
my @pars = (); |
my @pars = (); |
@Apache::lonxml::pwd=(); |
@Apache::lonxml::pwd=(); |
Line 53 sub xmlparse {
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Line 59 sub xmlparse {
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my $result; |
my $result; |
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my $safeeval = new Safe; |
my $safeeval = new Safe; |
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my $safehole = new Safe::Hole; |
$safeeval->permit("entereval"); |
$safeeval->permit("entereval"); |
$safeeval->permit(":base_math"); |
$safeeval->permit(":base_math"); |
$safeeval->deny(":base_io"); |
$safeeval->deny(":base_io"); |
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$safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT'); |
#need to inspect this class of ops |
#need to inspect this class of ops |
# $safeeval->deny(":base_orig"); |
# $safeeval->deny(":base_orig"); |
$safeinit .= ';$external::target='.$target.';'; |
$safeinit .= ';$external::target='.$target.';'; |
Line 72 sub xmlparse {
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Line 80 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=$token->[1];} |
if ($Apache::lonxml::textredirection == 1) {$result=$token->[1];} |
# $finaloutput .= &Apache::run::evaluate($token->[1],$safeeval,''); |
# $finaloutput .= &Apache::run::evaluate($token->[1],$safeeval,''); |
} elsif ($token->[0] eq 'S') { |
} elsif ($token->[0] eq 'S') { |
# if ($target eq 'meta' and $token->[2]->{metaout} eq 'ON') {$Apache::lonxml::textredirection = 1;} |
# if ($target eq 'meta' and $token->[2]->{metaout} eq 'ON') {$Apache::lonxml::textredirection = 1;} |
# 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 ($Apache::lonxml::redirection == 1) { |
if ($Apache::lonxml::redirection == 1) { |
$finaloutput .= &recurse($style_for_target{$token->[1]}, |
$finaloutput .= &recurse($style_for_target{$token->[1]}, |
$target,$safeeval,\%style_for_target, |
$target,$safeeval,\%style_for_target, |
@parstack); |
@parstack); |
} else { |
} else { |
$Apache::lonxml::outputstack .= &recurse($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 { |
$result = &callsub("start_$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') {$Apache::lonxml::textredirection = 0;} |
#if ($target eq 'meta') {$Apache::lonxml::textredirection = 0;} |
#clear out any tags that didn't end |
#clear out any tags that didn't end |
while ($token->[1] ne $stack[$#stack] |
while ($token->[1] ne $stack[$#stack] |
&& ($#stack > -1)) {pop @stack;pop @parstack;&decreasedepth($token);} |
&& ($#stack > -1)) { |
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&Apache::lonxml::error("Unbalanced tags in resource $stack['-1']"); |
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pop @stack;pop @parstack;&decreasedepth($token); |
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} |
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if (exists $style_for_target{'/'."$token->[1]"}) { |
if (exists $style_for_target{'/'."$token->[1]"}) { |
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Line 172 sub recurse {
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Line 183 sub recurse {
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} elsif ($tokenpat->[0] eq 'E') { |
} elsif ($tokenpat->[0] eq 'E') { |
#clear out any tags that didn't end |
#clear out any tags that didn't end |
while ($tokenpat->[1] ne $innerstack[$#innerstack] |
while ($tokenpat->[1] ne $innerstack[$#innerstack] |
&& ($#innerstack > -1)) {pop @innerstack;pop @innerparstack; |
&& ($#innerstack > -1)) { |
&decreasedepth($tokenpat);} |
&Apache::lonxml::error("Unbalanced tags in resource $innerstack['-1']"); |
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pop @innerstack;pop @innerparstack;&decreasedepth($tokenpat); |
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} |
$partstring = &callsub("end_$tokenpat->[1]", |
$partstring = &callsub("end_$tokenpat->[1]", |
$target, $tokenpat, \@innerparstack, |
$target, $tokenpat, \@innerparstack, |
\@pat, $safeeval, $style_for_target); |
\@pat, $safeeval, $style_for_target); |
Line 239 sub initdepth {
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Line 252 sub initdepth {
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sub increasedepth { |
sub increasedepth { |
my ($token) = @_; |
my ($token) = @_; |
if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) { |
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$#Apache::lonxml::depthcounter--; |
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$Apache::lonxml::olddepth=$Apache::lonxml::depth; |
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} |
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$Apache::lonxml::depth++; |
$Apache::lonxml::depth++; |
# print "<br>s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1]<br>\n"; |
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$Apache::lonxml::depthcounter[$Apache::lonxml::depth]++; |
$Apache::lonxml::depthcounter[$Apache::lonxml::depth]++; |
if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) { |
if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) { |
$Apache::lonxml::olddepth=$Apache::lonxml::depth; |
$Apache::lonxml::olddepth=$Apache::lonxml::depth; |
} |
} |
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my $curdepth=join('_',@Apache::lonxml::depthcounter); |
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&Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n"); |
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#print "<br>s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n"; |
} |
} |
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sub decreasedepth { |
sub decreasedepth { |
my ($token) = @_; |
my ($token) = @_; |
$Apache::lonxml::depth--; |
$Apache::lonxml::depth--; |
# print "<br>e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1]<br>\n"; |
if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) { |
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$#Apache::lonxml::depthcounter--; |
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$Apache::lonxml::olddepth=$Apache::lonxml::depth+1; |
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} |
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if ( $Apache::lonxml::depth < -1) { |
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&Apache::lonxml::error("Unbalanced tags in resource"); |
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$Apache::lonxml::depth='-1'; |
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} |
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my $curdepth=join('_',@Apache::lonxml::depthcounter); |
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&Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n"); |
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#print "<br>e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n"; |
} |
} |
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sub get_all_text { |
sub get_all_text { |
Line 274 sub get_all_text {
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Line 295 sub get_all_text {
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} elsif ($token->[0] eq 'E') { |
} elsif ($token->[0] eq 'E') { |
if ( $token->[1] eq $tag) { $depth--; } |
if ( $token->[1] eq $tag) { $depth--; } |
#skip sending back the last end tag |
#skip sending back the last end tag |
if ($depth > -1) { $result.=$token->[2]; } |
if ($depth > -1) { $result.=$token->[2]; } else { |
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$pars->unget_token($token); |
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} |
} |
} |
} |
} |
return $result |
return $result |
Line 296 sub parstring {
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Line 319 sub parstring {
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my ($token) = @_; |
my ($token) = @_; |
my $temp=''; |
my $temp=''; |
map { |
map { |
if ($_=~/\w+/) { |
unless ($_=~/\W/) { |
$temp .= "my \$$_=\"$token->[2]->{$_}\";" |
my $val=$token->[2]->{$_}; |
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if ($val =~ m/^[\%\@]/) { $val="\\".$val; } |
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$temp .= "my \$$_=\"$val\";" |
} |
} |
} @{$token->[3]}; |
} @{$token->[3]}; |
return $temp; |
return $temp; |
Line 316 sub writeallows {
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Line 341 sub writeallows {
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sub handler { |
sub handler { |
my $request=shift; |
my $request=shift; |
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my $target='web'; |
my $target='web'; |
$Apache::lonxml::debug=1; |
# $Apache::lonxml::debug=1; |
if ($ENV{'browser.mathml'}) { |
if ($ENV{'browser.mathml'}) { |
$request->content_type('text/xml'); |
$request->content_type('text/xml'); |
} else { |
} else { |
Line 335 sub handler {
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Line 360 sub handler {
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# &Apache::lonhomework::send_header($request); |
# &Apache::lonhomework::send_header($request); |
$request->send_http_header; |
$request->send_http_header; |
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return 'OK' if $request->header_only; |
return OK if $request->header_only; |
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$request->print(&Apache::lontexconvert::header()); |
$request->print(&Apache::lontexconvert::header()); |
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Line 350 sub handler {
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Line 375 sub handler {
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$request->print('</body>'); |
$request->print('</body>'); |
$request->print(&Apache::lontexconvert::footer()); |
$request->print(&Apache::lontexconvert::footer()); |
writeallows($request->uri); |
writeallows($request->uri); |
return 'OK'; |
return OK; |
} |
} |
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$Apache::lonxml::debug=0; |
$Apache::lonxml::debug=0; |
Line 360 sub debug {
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Line 385 sub debug {
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} |
} |
} |
} |
sub error { |
sub error { |
print "ERROR:".$_[0]."<br>\n"; |
# print "ERROR:".$_[0]."<br>\n"; |
} |
} |
sub warning { |
sub warning { |
if ($Apache::lonxml::debug eq 1) { |
if ($Apache::lonxml::debug eq 1) { |