version 1.43, 2005/02/11 16:46:38
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version 1.50, 2005/02/24 09:06:14
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Line 212 sub msgtexconverted {
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Line 212 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)=@_; |
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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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$latex='$'.$latex.'$'; |
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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 ($string)=@_; |
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# makes the decision about what is a minus sign easier supposedly |
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$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 =~/\\left\{/\{/g; |
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# $string =~/\\right\}/\}/g; |
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# $string =~/\\fun/ /g; |
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return $string; |
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} |
1; |
1; |
__END__ |
__END__ |
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