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Diff for /loncom/xml/run.pm between versions 1.25 and 1.31

version 1.25, 2002/04/10 14:46:30 version 1.31, 2002/06/24 21:23:26
Line 25  package Apache::run; Line 25  package Apache::run;
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  #
   
   use HTML::Entities;
   
 $Apache::run::EVALUATE_STRING=<<'ENDEVALUATE';    $Apache::run::EVALUATE_STRING=<<'ENDEVALUATE';  
   my %_LONCAPA_INTERNAL_oldexpressions=();    my %_LONCAPA_INTERNAL_oldexpressions=();
   my $i=0;  
   while (!$_LONCAPA_INTERNAL_oldexpressions{$_}) {    while (!$_LONCAPA_INTERNAL_oldexpressions{$_}) {
     $_LONCAPA_INTERNAL_oldexpressions{$_}=1;      $_LONCAPA_INTERNAL_oldexpressions{$_}=1;
     $_ =~s/((?:\$|\&)(?:[\#|\$]*[A-Za-z][\w]*|\{[A-Za-z][\w]*\}))([\[\{][^\$\&\]\}]+[\]\}])*?(\([^\$\&\)]+\))*?(?=[^\[\{\(]|$)/eval(defined(eval($1.$2))?eval('$1.$2.$3'):'$1.$2.$3')/seg;      $_ =~s/((?:\$|\&)(?:[\#|\$]*[A-Za-z][\w]*|\{[A-Za-z][\w]*\}))([\[\{][^\$\&\]\}]+[\]\}])*?(\([^\$\&\)]+\))*?(?=[^\[\{\(]|$)/eval(defined(eval($1.$2))?eval('$1.$2.$3'):'$1.$2.$3')/seg;
     if ($i++ > 10 ) { last; }      if (scalar(values(%_LONCAPA_INTERNAL_oldexpressions))>10) {last;}
   }    }
 ENDEVALUATE  ENDEVALUATE
   
 sub evaluate {  sub evaluate {
   my ($expression,$safeeval,$decls) = @_;    my ($expression,$safeeval,$decls) = @_;
   unless (defined($expression)) { return ''; }    unless (defined($expression)) { return ''; }
   if (!$Apache::lonxml::evaluate) { return $expression; }    if ($Apache::lonxml::evaluate < 1) { return $expression; }
   my $result = '';    my $result = '';
   $@='';    $@='';
     if ($Apache::lonxml::request) {
       $Apache::lonxml::request->hard_timeout("Apache::run::run, evaluation $code");
     }
   $safeeval->reval('{'.$decls.';$_=<<\'EXPRESSION\';'."\n".$expression.    $safeeval->reval('{'.$decls.';$_=<<\'EXPRESSION\';'."\n".$expression.
    "\n".'EXPRESSION'."\n".$EVALUATE_STRING.'}');     "\n".'EXPRESSION'."\n".$EVALUATE_STRING.'}');
     if ($Apache::lonxml::request) { $Apache::lonxml::request->kill_timeout; }
 #  $safeeval->reval('{'.$decls.';<< &evaluate(q|'.$expression.'|);}');  #  $safeeval->reval('{'.$decls.';<< &evaluate(q|'.$expression.'|);}');
     my $error=$@;
   if ($@ eq '') {    if ($@ eq '') {
     $result = $safeeval->reval('return $_;');      $result = $safeeval->reval('return $_;');
     chomp $result;      chomp $result;
   } else {    } else {
     &Apache::lonxml::error("substitution on:$expression:with:$decls:caused $@");      &Apache::lonxml::error('substitution on <pre>'.$expression.
      '</pre> with <pre>'.$decls.
      '</pre> caused <pre>'.$error);
   }      }  
   return $result    return $result
 }  }
Line 57  sub run { Line 65  sub run {
   my ($code,$safeeval,$hideerrors) = @_;    my ($code,$safeeval,$hideerrors) = @_;
 #  print "inside run\n";  #  print "inside run\n";
   $@='';    $@='';
     if ($Apache::lonxml::request) {
       $Apache::lonxml::request->hard_timeout("Apache::run::run, evaluation $code");
     }
   my (@result)=$safeeval->reval($code);    my (@result)=$safeeval->reval($code);
   if ($@ ne '' && !$hideerrors) {    if ($Apache::lonxml::request) { $Apache::lonxml::request->kill_timeout; }
     # Put in newline to make display of code easier to read.    my $error=$@;
     &Apache::lonxml::error(":$@: occured while running :\n$code");    if ($error ne '' && !$hideerrors) {
       &Apache::lonxml::error('<pre>'.&HTML::Entities::encode($error).
      '</pre> occured while running <pre>'.
      &HTML::Entities::encode($code).'</pre>');
   }    }
   if ( $#result < '1') {    if ( $#result < '1') {
     return $result[0];      return $result[0];
Line 75  sub dump { Line 89  sub dump {
   my $dump='';    my $dump='';
   foreach my $symname (sort keys %{$safeeval->varglob('main::')}) {    foreach my $symname (sort keys %{$safeeval->varglob('main::')}) {
     if (($symname!~/^\_/) && ($symname!~/\:$/)) {      if (($symname!~/^\_/) && ($symname!~/\:$/)) {
         my $line;
       if ($safeeval->reval('defined($'.$symname.')')) {        if ($safeeval->reval('defined($'.$symname.')')) {
  $dump.='$'.$symname.'='.$safeeval->reval('$'.$symname)."\n";   $line='$'.$symname.'='.$safeeval->reval('$'.$symname);
       }        }
       if ($safeeval->reval('defined(@'.$symname.')')) {        if ($safeeval->reval('defined(@'.$symname.')')) {
  $dump.='@'.$symname.'=('.   $line='@'.$symname.'=('.
   $safeeval->reval('join(",",@'.$symname.')').")\n";    $safeeval->reval('join(",",@'.$symname.')').")";
       }        }
       if ($safeeval->reval('defined(%'.$symname.')')) {        if ($safeeval->reval('defined(%'.$symname.')')) {
  $dump.='%'.$symname.'=(';   $line='%'.$symname.'=(';
  $dump.=$safeeval->reval('join(",",map { $_."=>".$'.   $line.=$safeeval->reval('join(",",map { $_."=>".$'.
  $symname.'{$_} } sort keys %'.   $symname.'{$_} } sort keys %'.
  $symname.')').")\n";   $symname.')').")"
       }        }
         if ($line ne '') { $dump.=&HTML::Entities::encode($line)."<br />\n"; }
     }      }
   }    }
   $dump.='';    $dump.='';
Removed from v.1.25  
changed lines
  Added in v.1.31

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