version 1.6, 2000/06/29 13:58:23
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version 1.14, 2000/08/02 16:47:53
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Line 8 package Apache::lonxml;
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Line 8 package Apache::lonxml;
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use strict; |
use strict; |
use HTML::TokeParser; |
use HTML::TokeParser; |
use Safe; |
use Safe; |
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use Opcode; |
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sub register { |
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my $space; |
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my @taglist; |
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my $temptag; |
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($space,@taglist) = @_; |
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foreach $temptag (@taglist) { |
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$Apache::lonxml::alltags{$temptag}=$space; |
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} |
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} |
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use Apache::style; |
use Apache::style; |
use Apache::lontexconvert; |
use Apache::lontexconvert; |
use Apache::londefdef; |
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use Apache::run; |
use Apache::run; |
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use Apache::londefdef; |
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use Apache::scripttag; |
#================================================== Main subroutine: xmlparse |
#================================================== Main subroutine: xmlparse |
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sub xmlparse { |
sub xmlparse { |
Line 21 sub xmlparse {
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Line 34 sub xmlparse {
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my $currentstring = ''; |
my $currentstring = ''; |
my $finaloutput = ''; |
my $finaloutput = ''; |
my $newarg = ''; |
my $newarg = ''; |
my $tempostring = ''; |
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my $tempocont = ''; |
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my $safeeval = new Safe; |
my $safeeval = new Safe; |
$safeeval->permit("entereval"); |
$safeeval->permit("entereval"); |
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$safeeval->permit(":base_math"); |
#-------------------- Redefinition of the target in the case of compound target |
#-------------------- Redefinition of the target in the case of compound target |
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($target, my @tenta) = split('&&',$target); |
($target, my @tenta) = split('&&',$target); |
Line 40 sub xmlparse {
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Line 52 sub xmlparse {
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while ($token = $pars->get_token) { |
while ($token = $pars->get_token) { |
if ($token->[0] eq 'T') { |
if ($token->[0] eq 'T') { |
$finaloutput .= $token->[1]; |
$finaloutput .= &Apache::run::evaluate($token->[1],$safeeval,''); |
$tempocont .= $token->[1]; |
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} elsif ($token->[0] eq 'S') { |
} elsif ($token->[0] eq 'S') { |
#------------------------------------------------------------- add tag to stack |
# add tag to stack |
push (@stack,$token->[1]); |
push (@stack,$token->[1]); |
#----------------------------------------- add parameters list to another stack |
# add parameters list to another stack |
map {$tempostring .= "$_=$token->[2]->{$_},"} @{$token->[3]}; |
push (@parstack,&parstring($token)); |
push (@parstack,$tempostring); |
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$tempostring = ''; |
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if (exists $style_for_target{$token->[1]}) { |
if (exists $style_for_target{$token->[1]}) { |
# print "Style for $token->[1] is " .$style_for_target{$token->[1]}."\n"; |
#basically recurse, but we never got more than one level down so just |
#---------------------------------------------------- use style file definition |
#create the new context here |
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my @innerstack = (); |
$newarg = $style_for_target{$token->[1]}; |
my @innerparstack = (); |
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# use style file definition |
if (index($newarg,'script') != -1 ) { |
$newarg = $style_for_target{$token->[1]}; |
my $pat = HTML::TokeParser->new(\$newarg); |
my $pat = HTML::TokeParser->new(\$newarg); |
my $tokenpat = ''; |
my $tokenpat = ''; |
my $partstring = ''; |
my $partstring = ''; |
my $oustring = ''; |
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my $outputstring; |
while ($tokenpat = $pat->get_token) { |
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if ($tokenpat->[0] eq 'T') { |
while ($tokenpat = $pat->get_token) { |
$partstring = $tokenpat->[1]; |
if ($tokenpat->[0] eq 'T') { |
} elsif ($tokenpat->[0] eq 'S') { |
# print "evaluating $tokenpat->[4]\n"; |
push (@innerstack,$tokenpat->[1]); |
$oustring .= &Apache::run::evaluate($tokenpat->[1],$safeeval); |
push (@innerparstack,&parstring($tokenpat)); |
} elsif ($tokenpat->[0] eq 'S') { |
$partstring = &callsub("start_$tokenpat->[1]", |
if ($tokenpat->[1] eq 'script') { |
$target, $tokenpat, \@innerparstack, |
while ($tokenpat = $pat->get_token and $tokenpat->[1] ne 'script') { |
$pat, $safeeval, \%style_for_target); |
if ($tokenpat->[0] eq 'S') { |
} elsif ($tokenpat->[0] eq 'E') { |
$partstring .= $tokenpat->[4]; |
#clear out any tags that didn't end |
} elsif ($tokenpat->[0] eq 'T') { |
while ($tokenpat->[1] ne $innerstack[$#innerstack] |
$partstring .= $tokenpat->[1]; |
&& ($#innerstack > 0)) {pop @innerstack;pop @innerparstack;} |
} elsif ($tokenpat->[0] eq 'E') { |
$partstring = &callsub("end_$tokenpat->[1]", |
$partstring .= $tokenpat->[2]; |
$target, $tokenpat, \@innerparstack, |
} |
$pat, $safeeval, \%style_for_target); |
} |
} |
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#pass both the variable to the style tag, and the tag we |
map {$partstring =~ s/\$$_/$token->[2]->{$_}/g; } @{$token->[3]}; |
#are processing inside the <definedtag> |
# print "want to use run\n"; |
if ($partstring ne "" ) { |
&Apache::run::run($partstring,$safeeval); |
$finaloutput .= &Apache::run::evaluate($partstring,$safeeval, |
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$parstack[$#parstack].$innerparstack[$#innerparstack]); |
$partstring = ''; |
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} else { |
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# print "evaluating $tokenpat->[4]\n"; |
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$oustring .= &Apache::run::evaluate($tokenpat->[4],$safeeval); |
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} |
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} elsif ($tokenpat->[0] eq 'E' and $tokenpat->[1] ne 'evaluate') { |
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# print "hereish\n"; |
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$oustring .= $tokenpat->[1]; |
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} |
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} |
} |
$newarg = $oustring; |
if ($tokenpat->[0] eq 'E') { pop @innerstack;pop @innerparstack; } |
} else { |
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map {$newarg =~ s/\$$_/$token->[2]->{$_}/g; } @{$token->[3]}; |
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} |
} |
$finaloutput .= $newarg; |
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} else { |
} else { |
# use default definition of tag |
my $result = &callsub("start_$token->[1]", $target, $token,\@parstack, |
my $sub="start_$token->[1]"; |
$pars, $safeeval, \%style_for_target); |
{ |
if ($result ne "" ) { |
no strict 'refs'; |
$finaloutput .= &Apache::run::evaluate($result,$safeeval, |
if (defined (&$sub)) { |
$parstack[$#parstack]); |
$currentstring = &$sub($target,$token,\@parstack); |
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$finaloutput .= $currentstring; |
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$currentstring = ''; |
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} else { |
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$finaloutput .= $token->[4]; |
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} |
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use strict 'refs'; |
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} |
} |
} |
} |
} elsif ($token->[0] eq 'E') { |
} elsif ($token->[0] eq 'E') { |
# Put here check for correct final tag (to avoid existence of |
#clear out any tags that didn't end |
# starting tag only) |
while ($token->[1] ne $stack[$#stack] |
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&& ($#stack > 0)) {pop @stack;pop @parstack;} |
pop @stack; |
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unless (exists $style_for_target{$token->[1]}) { |
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my $sub="end_$token->[1]"; |
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{ |
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no strict 'refs'; |
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if (defined(&$sub)) { |
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$currentstring = &$sub($target,$token,\@parstack); |
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$finaloutput .= $currentstring; |
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$currentstring = ''; |
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} else { |
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$finaloutput .= $token->[4]; |
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} |
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use strict 'refs'; |
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} |
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} |
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#---- end tag from the style file |
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if (exists $style_for_target{'/'."$token->[1]"}) { |
if (exists $style_for_target{'/'."$token->[1]"}) { |
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my @innerstack = (); |
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my @innerparstack = (); |
$newarg = $style_for_target{'/'."$token->[1]"}; |
$newarg = $style_for_target{'/'."$token->[1]"}; |
if (index($newarg,'script') != -1 ) { |
my $pat = HTML::TokeParser->new(\$newarg); |
my $pat = HTML::TokeParser->new(\$newarg); |
my $tokenpat; |
my $tokenpat; |
my $partstring = ''; |
my $partstring = ''; |
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my $oustring = ''; |
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my $outputstring; |
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while ($tokenpat = $pat->get_token) { |
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if ($tokenpat->[0] eq 'T') { |
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$oustring .= $tokenpat->[1]; |
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} elsif ($tokenpat->[0] eq 'S') { |
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if ($tokenpat->[1] eq 'script') { |
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while ($tokenpat = $pat->get_token and $tokenpat->[1] ne 'script') { |
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if ($tokenpat->[0] eq 'S') { |
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$partstring .= $tokenpat->[4]; |
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} elsif ($tokenpat->[0] eq 'T') { |
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$partstring .= $tokenpat->[1]; |
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} elsif ($tokenpat->[0] eq 'E') { |
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$partstring .= $tokenpat->[2]; |
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} |
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} |
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my @tempor_list = split(',',$parstack[$#parstack]); |
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my @te_kl = (); |
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my %tempor_hash = (); |
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map {(my $onete,my $twote) = split('=',$_); push (@te_kl,$onete); |
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$tempor_hash{$onete} = $twote} @tempor_list; |
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map {$partstring =~ s/\$$_/$tempor_hash{$_}/g; } @te_kl; |
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print "want to use run\n"; |
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&Apache::run::run($partstring,$safeeval); |
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$partstring = ''; |
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} elsif ($tokenpat->[1] eq 'evaluate') { |
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$outputstring = &Apache::run::evaluate($tokenpat->[2]{expression},$safeeval); |
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$oustring .= $outputstring; |
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} else { |
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$oustring .= $tokenpat->[4]; |
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} |
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} elsif ($tokenpat->[0] eq 'E' and $tokenpat->[1] ne 'evaluate') { |
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$oustring .= $tokenpat->[1]; |
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} |
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} |
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$newarg = $oustring; |
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} else { |
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my @very_temp = split(',',$parstack[$#parstack]); |
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map {my @ret= split('=',$_); $newarg =~ s/\$$ret[0]/$ret[1]/g; } @very_temp; |
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} |
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$finaloutput .= $newarg; |
while ($tokenpat = $pat->get_token) { |
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if ($tokenpat->[0] eq 'T') { |
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$partstring = $tokenpat->[1]; |
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} elsif ($tokenpat->[0] eq 'S') { |
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push (@innerstack,$tokenpat->[1]); |
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push (@innerparstack,&parstring($tokenpat)); |
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$partstring = &callsub("start_$tokenpat->[1]", |
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$target, $tokenpat, \@innerparstack, |
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$pat, $safeeval, \%style_for_target); |
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} elsif ($tokenpat->[0] eq 'E') { |
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#clear out any tags that didn't end |
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while ($tokenpat->[1] ne $innerstack[$#innerstack] |
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&& ($#innerstack > 0)) {pop @innerstack;pop @innerparstack;} |
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$partstring = &callsub("end_$tokenpat->[1]", |
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$target, $tokenpat, \@innerparstack, |
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$pat, $safeeval, \%style_for_target); |
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} |
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#pass both the variable to the style tag, and the tag we |
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#are processing inside the <definedtag> |
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if ( $partstring ne "" ) { |
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$finaloutput .= &Apache::run::evaluate($partstring,$safeeval, |
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$parstack[$#parstack].$innerparstack[$#innerparstack]); |
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} |
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if ($tokenpat->[0] eq 'E') { pop @innerstack;pop @innerparstack; } |
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} |
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} else { |
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my $result = &callsub("end_$token->[1]", $target, $token, \@parstack, |
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$pars,$safeeval, \%style_for_target); |
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if ($result ne "") { |
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$finaloutput .= &Apache::run::evaluate($result,$safeeval, |
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$parstack[$#parstack]); |
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} |
} |
} |
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pop @stack; |
pop @parstack; |
pop @parstack; |
} |
} |
} |
} |
return $finaloutput; |
return $finaloutput; |
} |
} |
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sub callsub { |
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my ($sub,$target,$token,$parstack,$parser,$safeeval,$style)=@_; |
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my $currentstring=''; |
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{ |
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no strict 'refs'; |
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if (my $space=$Apache::lonxml::alltags{$token->[1]}) { |
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#print "Calling sub $sub in $space \n"; |
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$sub="$space\:\:$sub"; |
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$currentstring = &$sub($target,$token,\@$parstack,$parser,$safeeval,$style); |
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} else { |
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#print "NOT Calling sub $sub\n"; |
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if (defined($token->[4])) { |
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$currentstring = $token->[4]; |
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} else { |
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$currentstring = $token->[2]; |
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} |
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} |
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use strict 'refs'; |
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} |
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return $currentstring; |
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} |
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sub parstring { |
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my ($token) = @_; |
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my $temp=''; |
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map {$temp .= "my \$$_=\"$token->[2]->{$_}\";"} @{$token->[3]}; |
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return $temp; |
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} |
1; |
1; |
__END__ |
__END__ |
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