version 1.62, 2005/02/28 19:08:11
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version 1.93, 2008/12/04 19:53:53
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Line 42 package Apache::lontexconvert;
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Line 42 package Apache::lontexconvert;
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use strict; |
use strict; |
use tth(); |
use tth(); |
use vars qw($errorstring); |
use vars qw($errorstring); |
use Apache(); |
#use Apache::lonxml(); |
use Apache::lonmsg(); |
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use Apache::lonxml(); |
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use Apache::lonmenu(); |
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use Apache::lonlocal; |
use Apache::lonlocal; |
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use Apache::lonnet; |
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use lib '/home/httpd/lib/perl/'; |
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use LONCAPA; |
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use LWP::UserAgent; |
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# ====================================================================== Header |
# ====================================================================== Header |
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sub init_tth { |
sub init_tth { |
my $options=$ENV{'course.'.$ENV{'request.course.id'}.'.tthoptions'}; |
my $options=$env{'course.'.$env{'request.course.id'}.'.tthoptions'}; |
if ($ENV{'browser.mathml'}) { |
if ($options =~ /\S/) { |
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$options = ' '.$options; |
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} else { |
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undef($options); |
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} |
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if ($env{'browser.mathml'}) { |
&tth::ttminit(); |
&tth::ttminit(); |
if ($ENV{'browser.unicode'}) { |
if ($env{'browser.unicode'}) { |
&tth::ttmoptions('-L -u1 '.$options); |
&tth::ttmoptions('-L -u1'.$options); |
} else { |
} else { |
&tth::ttmoptions('-L -u0 '.$options); |
&tth::ttmoptions('-L -u0'.$options); |
} |
} |
} else { |
} else { |
&tth::tthinit(); |
&tth::tthinit(); |
if ($ENV{'browser.unicode'}) { |
if ($env{'browser.unicode'}) { |
&tth::tthoptions('-L -u1 '.$options); |
&tth::tthoptions('-L -u1'.$options); |
} else { |
} else { |
&tth::tthoptions('-L -u0 '.$options); |
&tth::tthoptions('-L -u0'.$options); |
} |
} |
} |
} |
} |
} |
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sub header { |
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$errorstring=''; |
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my $time=time; |
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&init_tth(); |
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return &Apache::lonxml::xmlbegin(). |
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"\n<head>\n". |
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&Apache::lonxml::fontsettings(). |
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&Apache::lonmenu::registerurl(undef,'tex'). |
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"\n</head>\n"; |
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} |
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# ================================================================== Conversion |
# ================================================================== Conversion |
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$Apache::lontexconvert::messedup=0; |
$Apache::lontexconvert::messedup=0; |
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# we need this routine because &converted can get called from inside |
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# of the safespace (through &xmlparse('<m>stuff</m>') which doesn't |
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# allow the opcode for alarm, so we need to compile this before we get |
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# into the safe space since opcode checks only occur at compile time |
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sub convert_real { |
sub convert_real { |
my ($texstring)=@_; |
my ($texstring)=@_; |
my ($xmlstring,$errorstring); |
my ($xmlstring,$errorstring); |
Line 98 sub convert_real {
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Line 91 sub convert_real {
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$Apache::lontexconvert::messedup=1; |
$Apache::lontexconvert::messedup=1; |
die &mt("TeX unconverted due to errors"); |
die &mt("TeX unconverted due to errors"); |
}; |
}; |
alarm($Apache::lonnet::perlvar{'lonScriptTimeout'}); |
&Apache::lonxml::start_alarm(); |
if ($ENV{'browser.mathml'}) { |
if ($env{'browser.mathml'}) { |
$xmlstring=&tth::ttm($$texstring); |
$xmlstring=&tth::ttm($$texstring); |
$xmlstring=~s/\<math\>/\<math xmlns=\"\&mathns\;\"\>/g; |
$xmlstring=~s/\<math\>/\<math xmlns=\"\&mathns\;\"\>/g; |
$xmlstring=~s/\<br\>/\<br\/\>/g; |
$xmlstring=~s/\<br\>/\<br\/\>/g; |
Line 113 sub convert_real {
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Line 106 sub convert_real {
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$xmlstring=~s/^\s*\<br clear\=\"all\"/\<br/s; |
$xmlstring=~s/^\s*\<br clear\=\"all\"/\<br/s; |
$xmlstring=~s/^\s*//; |
$xmlstring=~s/^\s*//; |
$xmlstring=~s/\s*$//; |
$xmlstring=~s/\s*$//; |
alarm(0); |
# |
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# \rightleftharpoons is not converted by tth but maps |
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# reasonably well to ⇔. If we get many more of these, |
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# we're going to need to have a translation sub. |
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# |
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my $lrharpoon = pack("U", 0x21cc); |
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$xmlstring=~s/\\rightleftharpoons/$lrharpoon/g; |
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&Apache::lonxml::end_alarm(); |
return ($xmlstring,$errorstring); |
return ($xmlstring,$errorstring); |
} |
} |
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Line 136 ENDCONV
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Line 137 ENDCONV
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$errorstring) { |
$errorstring) { |
&Apache::lonnet::logthis("Trying to kill myself"); |
&Apache::lonnet::logthis("Trying to kill myself"); |
$Apache::lontexconvert::messedup=1; |
$Apache::lontexconvert::messedup=1; |
my $request=Apache->request(); |
if (ref($Apache::lonxml::request)) { |
$request->child_terminate(); |
$Apache::lonxml::request->child_terminate(); |
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} else { |
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my $request; |
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eval { $request=Apache->request; }; |
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if (!$request) { |
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eval { $request=Apache2::RequestUtil->request; }; |
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} |
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if ($request) { |
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$request->child_terminate(); |
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} else { |
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&Apache::lonnet::logthis("Unable to find a request to do child_terminate on"); |
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} |
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} |
} |
} |
return $xmlstring; |
return $xmlstring; |
} |
} |
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sub clean_out_math_mode { |
sub clean_out_math_mode { |
my ($texstring)=@_; |
my ($texstring)=@_; |
$$texstring=~s/(?!\\)\$//g; |
$$texstring=~s/(?<!\\)\$//g; |
$$texstring=~s/\\[\)\(\]\[]//g; |
$$texstring=~s/\\[\)\(\]\[]//g; |
$$texstring=~s/\\ensuremath//g; |
$$texstring=~s/\\ensuremath//g; |
return ''; |
return ''; |
Line 164 sub jsMath_converted {
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Line 177 sub jsMath_converted {
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my $tag='span'; |
my $tag='span'; |
if (&displaystyle($texstring)) { $tag='div'; } |
if (&displaystyle($texstring)) { $tag='div'; } |
&clean_out_math_mode($texstring); |
&clean_out_math_mode($texstring); |
return '<'.$tag.' class="math">'.$$texstring.'</'.$tag.'>'; |
return &jsMath_header(). |
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'<'.$tag.' class="math">'.$$texstring.'</'.$tag.'>'; |
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} |
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{ |
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my @jsMath_sent_header; |
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sub jsMath_reset { |
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undef(@jsMath_sent_header); |
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} |
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sub jsMath_push { |
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push(@jsMath_sent_header,0); |
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} |
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sub jsMath_header { |
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if (!@jsMath_sent_header) { |
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&Apache::lonnet::logthis("mismatched calls of jsMath_header and jsMath_process"); |
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return ''; |
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} |
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return '' if $jsMath_sent_header[-1]; |
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$jsMath_sent_header[-1]=1; |
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return |
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'<script type="text/javascript"> |
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function NoFontMessage () {} |
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jsMath = {Parser: {prototype: {environments: {\'eqnarray*\' :[\'Array\',null,null,\'rcl\',[5/18,5/18],3,\'D\']}}}}; |
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</script>'."\n". |
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'<script type="text/javascript" src="/adm/jsMath/jsMath.js"></script>'."\n"; |
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} |
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sub jsMath_process { |
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my $state = pop(@jsMath_sent_header); |
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return '' if !$state; |
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return "\n". |
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'<script type="text/javascript">jsMath.Process()</script>'."\n"; |
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} |
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sub jsMath_state { |
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my ($level) = @_; |
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return $jsMath_sent_header[$level]; |
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} |
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} |
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sub tex_engine { |
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if (exists($env{'form.texengine'})) { |
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if ($env{'form.texengine'} ne '') { |
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return $env{'form.texengine'}; |
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} |
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} |
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if ($env{'request.course.id'} |
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&& exists($env{'course.'.$env{'request.course.id'}.'.texengine'})) { |
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return $env{'course.'.$env{'request.course.id'}.'.texengine'}; |
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} |
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if (exists($env{'environment.texengine'})) { |
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return $env{'environment.texengine'}; |
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} |
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return 'tth'; |
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} |
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sub init_math_support { |
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my ($inherit_jsmath) = @_; |
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&init_tth(); |
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&Apache::lontexconvert::jsMath_push(); |
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if (lc(&tex_engine()) eq 'jsmath' || |
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($inherit_jsmath && &jsMath_state(-2))) { |
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return &Apache::lontexconvert::jsMath_header(); |
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} |
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return; |
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} |
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sub mimetex_valign { |
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my ($texstring)=@_; |
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my $ua = LWP::UserAgent->new; #from the perldoc of LWP::UserAgent |
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$ua->timeout(10); |
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$ua->env_proxy; |
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#header without imagedata saved to response: |
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my $response = $ua->head('http://localhost.localdomain/cgi-bin/mimetex.cgi?'.$texstring); |
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if ($response->is_success) { |
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#get the valign-value: |
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return($response->headers->{'vertical-align'});} |
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else { |
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return(0); #if (error) than continue without valign |
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} |
} |
} |
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sub mimetex_converted { |
sub mimetex_converted { |
Line 176 sub mimetex_converted {
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Line 266 sub mimetex_converted {
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if ($displaystyle) { |
if ($displaystyle) { |
$$texstring='\\displaystyle \\Large '.$$texstring; |
$$texstring='\\displaystyle \\Large '.$$texstring; |
} |
} |
my $result='<img src="/cgi-bin/mimetex.cgi?'.&Apache::lonnet::escape($$texstring).'" />'; |
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my $result='<img src="/cgi-bin/mimetex.cgi?'.&escape($$texstring).'" style="vertical-align:'.&mimetex_valign($$texstring).'px" alt="$'.$$texstring.'$" />'; |
if ($displaystyle) { |
if ($displaystyle) { |
$result='<center>'.$result.'</center>'; |
$result='<center>'.$result.'</center>'; |
} |
} |
Line 184 sub mimetex_converted {
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Line 275 sub mimetex_converted {
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} |
} |
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sub converted { |
sub converted { |
if ($ENV{'environment.texengine'} eq 'tth') { |
my ($string,$mode)=@_; |
return &tth_converted; |
if ($mode eq '') { $mode = &tex_engine(); } |
} elsif ($ENV{'environment.texengine'} eq 'jsMath') { |
if ($mode =~ /tth/i) { |
return &jsMath_converted; |
return &tth_converted($string); |
} elsif ($ENV{'environment.texengine'} eq 'mimetex') { |
} elsif ($mode =~ /jsmath/i) { |
return &mimetex_converted; |
return &jsMath_converted($string); |
} |
} elsif ($mode =~ /mimetex/i) { |
return &tth_converted; |
return &mimetex_converted($string); |
} |
} |
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return &tth_converted($string); |
# ====================================================================== Footer |
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sub footer { |
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my $xmlstring=''; |
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if ($ENV{'request.state'} eq 'construct') { |
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$xmlstring.='<address>'.$errorstring.'</address>'; |
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} else { |
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&Apache::lonmsg::author_res_msg($ENV{'request.filename'},$errorstring); |
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} |
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# -------------------------------------------------------------------- End Body |
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$xmlstring.=&Apache::lonxml::xmlend(); |
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return $xmlstring; |
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} |
} |
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# ------------------------------------------------------------ Message display |
# ------------------------------------------------------------ Message display |
Line 220 sub to_convert {
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Line 299 sub to_convert {
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sub smiley { |
sub smiley { |
my $expression=shift; |
my $expression=shift; |
if ($ENV{'browser.imagesuppress'} eq 'on') { return $expression; } |
if ($env{'browser.imagesuppress'} eq 'on') { return $expression; } |
my %smileys=('\:\-\)' => 'smiley', |
my %smileys=('\:\-\)' => 'smiley', |
'8\-\)' => 'coolsmile', |
'8\-\)' => 'coolsmile', |
'8\-(I|\|)' => 'coolindiff', |
'8\-(I|\|)' => 'coolindiff', |
Line 236 sub smiley {
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Line 315 sub smiley {
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'\:\-(X|\#)' => 'lipsrsealed', |
'\:\-(X|\#)' => 'lipsrsealed', |
'\:\-S' => 'huh'); |
'\:\-S' => 'huh'); |
my $iconpath=$Apache::lonnet::perlvar{'lonIconsURL'}; |
my $iconpath=$Apache::lonnet::perlvar{'lonIconsURL'}; |
foreach (keys %smileys) { |
foreach my $smiley (keys(%smileys)) { |
$expression=~s/$_/\<img src="$iconpath\/$smileys{$_}.gif" \/\>/gs; |
$expression=~s/$smiley/\<img src="$iconpath\/$smileys{$smiley}.gif" \/\>/gs; |
} |
} |
return $expression; |
return $expression; |
} |
} |
Line 248 sub msgtexconverted {
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Line 327 sub msgtexconverted {
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&init_tth(); |
&init_tth(); |
my $outmessage=''; |
my $outmessage=''; |
my $tex=0; |
my $tex=0; |
foreach (split(/(?:\<\;|\<)\/*m\s*(?:\>\;|\>)/i,$message)) { |
foreach my $fragment (split(/(?:\<\;|\<)\/*m\s*(?:\>\;|\>)/i,$message)) { |
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if ($tex) { |
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if ($email) { |
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$outmessage.='</pre><tt>'.&to_convert($fragment).'</tt><pre>'; |
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$tex=0; |
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} else { |
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$outmessage.=&to_convert($fragment); |
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$tex=0; |
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} |
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} else { |
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$outmessage.=&smiley($fragment); |
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$tex=1; |
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} |
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} |
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$message=$outmessage; $outmessage=''; $tex=0; |
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foreach my $fragment (split(/(?:\<\;|\<)\/*algebra\s*(?:\>\;|\>)/i, |
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$message)) { |
if ($tex) { |
if ($tex) { |
if ($email) { |
if ($email) { |
$outmessage.='</pre><tt>'.&to_convert($_).'</tt><pre>'; $tex=0; |
$outmessage.='</pre><tt>'.&algebra($fragment,'web').'</tt><pre>'; |
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$tex=0; |
} else { |
} else { |
$outmessage.=&to_convert($_); $tex=0; |
$outmessage.=&algebra($fragment,'web'); |
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$tex=0; |
} |
} |
} else { |
} else { |
$outmessage.=&smiley($_); $tex=1; |
$outmessage.=$fragment; |
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$tex=1; |
} |
} |
} |
} |
if (wantarray) { |
if (wantarray) { |
Line 269 sub msgtexconverted {
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Line 367 sub msgtexconverted {
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sub algebra { |
sub algebra { |
use AlgParser; |
use AlgParser; |
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my ($string,$target,$style)=@_; |
my ($string,$target,$style,$parstack,$safeeval)=@_; |
my $parser = new AlgParserWithImplicitExpand; |
my $parser = new AlgParserWithImplicitExpand; |
$string=&prepare_algebra($string); |
$string=&prepare_algebra($string); |
my $ret = $parser->parse($string); |
my $ret = $parser->parse($string); |
Line 286 sub algebra {
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Line 384 sub algebra {
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$latex='\\ensuremath{'.$latex.'}'; |
$latex='\\ensuremath{'.$latex.'}'; |
} |
} |
if ($target eq 'web' || $target eq 'analyze') { |
if ($target eq 'web' || $target eq 'analyze') { |
$result = &converted(\$latex); |
my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval); |
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$result = &converted(\$latex,$display); |
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# $result = &converted(\$latex); |
} else { |
} else { |
$result = $latex; |
$result = $latex; |
} |
} |
Line 310 sub postprocess_algebra {
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Line 410 sub postprocess_algebra {
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# moodle had these and I don't know why, ignoring them for now |
# moodle had these and I don't know why, ignoring them for now |
# $string =~s/\\fun/ /g; |
# $string =~s/\\fun/ /g; |
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# sqrt(3,4) -> \sqrt\let{3,4\right}, which is annoying |
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$string =~s/\\left\{/\{/g; |
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$string =~s/\\right\}/\}/g; |
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# remove the extra () in the denominator of a \frac |
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$string =~s/\\frac{(.+?)}{\\left\((.+?)\\right\)}/\\frac{$1}{$2}/gs; |
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# sqrt(3,4) means the 4 root of 3 |
# sqrt(3,4) means the 4 root of 3 |
$string =~s/\\sqrt{([^,]+),([^\}]+)}/\\sqrt[$2]{$1}/gs; |
$string =~s/\\sqrt{([^,]+),([^\}]+)}/\\sqrt[$2]{$1}/gs; |
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Line 340 sub postprocess_algebra {
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Line 433 sub postprocess_algebra {
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__END__ |
__END__ |
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=pod |
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=head1 NAME |
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Apache::lontexconvert; |
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=head1 SYNOPSIS |
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Access to tth/ttm |
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This is part of the LearningOnline Network with CAPA project |
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described at http://www.lon-capa.org. |
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=head1 SUBROUTINES |
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=over |
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=item init_tth() |
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Header |
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=item convert_real() |
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we need this routine because &converted can get called from inside |
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of the safespace (through &xmlparse('<m>stuff</m>') which doesn't |
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allow the opcode for alarm, so we need to compile this before we get |
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into the safe space since opcode checks only occur at compile time |
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=item tth_converted() |
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=item clean_out_math_mode() |
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=item displaystyle() |
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=item jsMath_converted() |
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=item tex_engine() |
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=item init_math_support() |
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=item mimetex_converted() |
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=item converted() |
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=item to_convert() |
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message display |
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=item smiley() |
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??? |
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=item msgtexconverted() |
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=item algebra() |
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=item prepare_algebra() |
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=item postprocess_algebra() |
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=back |
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=cut |
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