version 1.43, 2005/02/11 16:46:38
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version 1.79, 2006/10/23 18:49:47
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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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# ====================================================================== 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; |
$Apache::lontexconvert::messedup=0; |
Line 98 sub convert_real {
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Line 93 sub convert_real {
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$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; |
$xmlstring=~s/\<br\>/\<br\/\>/g; |
Line 113 sub convert_real {
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Line 108 sub convert_real {
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$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); |
&Apache::lonxml::end_alarm(); |
return ($xmlstring,$errorstring); |
return ($xmlstring,$errorstring); |
} |
} |
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sub converted { |
sub tth_converted { |
my $texstring=shift; |
my $texstring=shift; |
my $xmlstring='['.&mt('UNDISPLAYABLE').']'; |
my $xmlstring='['.&mt('UNDISPLAYABLE').']'; |
if ($Apache::lontexconvert::messedup) { |
if ($Apache::lontexconvert::messedup) { |
return '['.&mt('TeX unconverted due to previous errors').']'; |
return '['.&mt('TeX unconverted due to previous errors').']'; |
} |
} |
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$$texstring ='\\documentstyle{article}'.$$texstring; |
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eval(<<'ENDCONV'); |
eval(<<'ENDCONV'); |
($xmlstring,$errorstring)=&convert_real($texstring) |
($xmlstring,$errorstring)=&convert_real($texstring) |
ENDCONV |
ENDCONV |
Line 134 ENDCONV
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Line 131 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 $xmlstring; |
} |
} |
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# ====================================================================== Footer |
sub clean_out_math_mode { |
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my ($texstring)=@_; |
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$$texstring=~s/(?!\\)\$//g; |
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$$texstring=~s/\\[\)\(\]\[]//g; |
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$$texstring=~s/\\ensuremath//g; |
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return ''; |
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} |
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sub footer { |
sub displaystyle { |
my $xmlstring=''; |
my ($texstring)=@_; |
if ($ENV{'request.state'} eq 'construct') { |
#has a $$ or \[ or \displaystyle in it, guessinng it's display mode |
$xmlstring.='<address>'.$errorstring.'</address>'; |
if ($$texstring=~/[^\\]\$\$/ || |
} else { |
$$texstring=~/\\\[/ || |
&Apache::lonmsg::author_res_msg($ENV{'request.filename'},$errorstring); |
$$texstring=~/\\displaystyle/) { return 1; } |
} |
return 0; |
# -------------------------------------------------------------------- End Body |
} |
$xmlstring.=&Apache::lonxml::xmlend(); |
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return $xmlstring; |
sub jsMath_converted { |
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my $texstring=shift; |
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my $tag='span'; |
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if (&displaystyle($texstring)) { $tag='div'; } |
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&clean_out_math_mode($texstring); |
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return &jsMath_header(). |
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'<'.$tag.' class="math">'.$$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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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 '<script type="text/javascript">jsMath.Process()</script>'; |
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} |
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} |
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sub init_math_support { |
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&init_tth(); |
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&Apache::lontexconvert::jsMath_push(); |
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if ($env{'environment.texengine'} eq 'jsMath' || |
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$env{'form.texengine'} eq 'jsMath' ) { |
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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_converted { |
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my $texstring=shift; |
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my $displaystyle=&displaystyle($texstring); |
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&clean_out_math_mode($texstring); |
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if ($displaystyle) { |
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$$texstring='\\displaystyle \\Large '.$$texstring; |
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} |
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my $result='<img src="/cgi-bin/mimetex.cgi?'.&escape($$texstring).'" />'; |
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if ($displaystyle) { |
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$result='<center>'.$result.'</center>'; |
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} |
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return $result; |
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} |
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sub converted { |
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my ($string,$mode)=@_; |
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if ($mode eq '') { $mode=$env{'environment.texengine'}; } |
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if ($mode =~ /tth/i) { |
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return &tth_converted($string); |
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} elsif ($mode =~ /jsmath/i) { |
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return &jsMath_converted($string); |
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} elsif ($mode =~ /mimetex/i) { |
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return &mimetex_converted($string); |
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} |
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return &tth_converted($string); |
} |
} |
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# ------------------------------------------------------------ Message display |
# ------------------------------------------------------------ Message display |
Line 166 sub to_convert {
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Line 251 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 182 sub smiley {
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Line 267 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 194 sub msgtexconverted {
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Line 279 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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$tex=1; |
} |
} |
} |
} |
if (wantarray) { |
if (wantarray) { |
Line 212 sub msgtexconverted {
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Line 316 sub msgtexconverted {
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} |
} |
} |
} |
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sub algebra { |
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use AlgParser; |
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my ($string,$target,$style)=@_; |
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my $parser = new AlgParserWithImplicitExpand; |
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$string=&prepare_algebra($string); |
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my $ret = $parser->parse($string); |
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my $result='['.&mt('Algebra unconverted due to previous errors').']'; |
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if ( ref($ret) ) { |
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#$parser->tostring(); |
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$parser->normalize(); |
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my $latex=$parser->tolatex(); |
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$latex=&postprocess_algebra($latex); |
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if ($style eq 'display') { |
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$latex='$$'.$latex.'$$x'; |
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} else { |
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# style is 'inline' |
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$latex='\\ensuremath{'.$latex.'}'; |
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} |
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if ($target eq 'web' || $target eq 'analyze') { |
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$result = &converted(\$latex); |
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} else { |
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$result = $latex; |
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} |
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} else { |
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&Apache::lonxml::error($parser->{'htmlerror'}); |
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} |
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} |
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sub prepare_algebra { |
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my ($string)=@_; |
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# makes the decision about what is a minus sign easier supposedly |
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$string =~ s/(\<\>|\<\=|\>\=[\=\>\<] *)-/$1 zeroplace -/g; |
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return $string; |
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} |
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sub postprocess_algebra { |
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my ($string)=@_; |
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# moodle had these and I don't know why, ignoring them for now |
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# $string =~s/\\fun/ /g; |
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# sqrt(3,4) means the 4 root of 3 |
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$string =~s/\\sqrt{([^,]+),([^\}]+)}/\\sqrt[$2]{$1}/gs; |
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# log(3,4) means the log base 4 of 3 |
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$string =~s/\\log\\left\((.+?),(.+?)\\right\)/\\log_{$2}\\left($1\\right)/gs; |
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# log(3,4) means the log base 4 of 3 |
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$string =~s/\\((?:sin|cos|tan|sec|csc|cot)(?:h)?)\\left\((.+?),(.+?)\\right\)/\\$1^{$3}\\left($2\\right)/gs; |
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# int(3,a,b) integral from a to b of 3 |
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$string =~s/\\int\\left\((.+?),(.+?),(.+?)\\right\)/\\int_{$2}^{$3}\\left($1\\right)/gs; |
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# int( ... dx) -> ... |
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$string =~s/\\int\\left\((.+?)d[a-z]\\right\)/$1/gs; |
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# |
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$string =~s/\\lim\\left\((.+?),(.+?),(.+?)\\right\)/\\lim_{$2\\to $3}$1/gs; |
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return $string; |
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} |
1; |
1; |
__END__ |
__END__ |
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