version 1.42, 2005/02/09 15:45:19
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version 1.46, 2005/02/24 05:26:00
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Line 36
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Line 36
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# The C source of the Code may not be distributed by the Licensee |
# The C source of the Code may not be distributed by the Licensee |
# to any other parties under any circumstances. |
# to any other parties under any circumstances. |
# |
# |
# 05/29/00,05/30,10/11,10/20 Gerd Kortemeyer |
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# 5/4 Gerd Kortemeyer |
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package Apache::lontexconvert; |
package Apache::lontexconvert; |
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Line 112 sub convert_real {
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Line 110 sub convert_real {
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$errorstring.=&tth::ttherror(); |
$errorstring.=&tth::ttherror(); |
$xmlstring=~s-</font(\s*)>-</font>-g; |
$xmlstring=~s-</font(\s*)>-</font>-g; |
} |
} |
$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); |
alarm(0); |
Line 214 sub msgtexconverted {
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Line 212 sub msgtexconverted {
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} |
} |
} |
} |
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sub algebra { |
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my ($string,$target)=@_; |
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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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$latex=&postprocess_algebra($string); |
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$latex='$'.$latex.'$'; |
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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 ($string)=@_; |
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#protect the confusable greek symbols |
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$string =~ s/delta/zdelta/g; |
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$string =~ s/beta/bita/g; |
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$string =~ s/theta/thita/g; |
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$string =~ s/zeta/zita/g; |
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$string =~ s/eta/xeta/g; |
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$string =~ s/epsilon/zepslon/g; |
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$string =~ s/upsilon/zupslon/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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# replace some special symbols with the LaTeX equivalents |
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$string =~ s/infty/\\infty/g; |
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$string =~ s/infinity/\\infty/g; |
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$string =~ s/alpha/\\alpha/g; |
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$string =~ s/gamma/\\gamma/g; |
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$string =~ s/iota/\\iota/g; |
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$string =~ s/kappa/\\kappa/g; |
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$string =~ s/lambda/\\lambda/g; |
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$string =~ s/mu/\\mu/g; |
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$string =~ s/nu/\\nu/g; |
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$string =~ s/xi/\\xi/g; |
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$string =~ s/rho/\\rho/g; |
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$string =~ s/sigma/\\sigma/g; |
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$string =~ s/tau/\\tau/g; |
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$string =~ s/phi/\\phi/g; |
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$string =~ s/chi/\\chi/g; |
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$string =~ s/psi/\\psi/g; |
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$string =~ s/omega/\\omega/g; |
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$string =~ s/zdelta/\\delta/g; |
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$string =~ s/bita/\\beta/g; |
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$string =~ s/thita/\\theta/g; |
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$string =~ s/zita/\\zeta/g; |
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$string =~ s/xeta/\\eta/g; |
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$string =~ s/zepslon/\\epsilon/g; |
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$string =~ s/zupslon/\\upsilon/g; |
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return $string; |
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} |
1; |
1; |
__END__ |
__END__ |
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