version 1.55, 2005/02/24 09:54:01
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version 1.62, 2005/02/28 19:08:11
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Line 117 sub convert_real {
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Line 117 sub convert_real {
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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 140 ENDCONV
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Line 142 ENDCONV
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return $xmlstring; |
return $xmlstring; |
} |
} |
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sub clean_out_math_mode { |
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my ($texstring)=@_; |
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$$texstring=~s/(?!\\)\$//g; |
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$$texstring=~s/\\[\)\(\]\[]//g; |
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$$texstring=~s/\\ensuremath//g; |
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return ''; |
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} |
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sub displaystyle { |
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my ($texstring)=@_; |
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#has a $$ or \[ or \displaystyle in it, guessinng it's display mode |
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if ($$texstring=~/[^\\]\$\$/ || |
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$$texstring=~/\\\[/ || |
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$$texstring=~/\\displaystyle/) { return 1; } |
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return 0; |
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} |
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sub jsMath_converted { |
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my $texstring=shift; |
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my $tag='span'; |
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if (&displaystyle($texstring)) { $tag='div'; } |
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&clean_out_math_mode($texstring); |
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return '<'.$tag.' class="math">'.$$texstring.'</'.$tag.'>'; |
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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?'.&Apache::lonnet::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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if ($ENV{'environment.texengine'} eq 'tth') { |
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return &tth_converted; |
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} elsif ($ENV{'environment.texengine'} eq 'jsMath') { |
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return &jsMath_converted; |
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} elsif ($ENV{'environment.texengine'} eq 'mimetex') { |
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return &mimetex_converted; |
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} |
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return &tth_converted; |
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} |
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# ====================================================================== Footer |
# ====================================================================== Footer |
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sub footer { |
sub footer { |
Line 215 sub msgtexconverted {
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Line 269 sub msgtexconverted {
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sub algebra { |
sub algebra { |
use AlgParser; |
use AlgParser; |
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my ($string,$target)=@_; |
my ($string,$target,$style)=@_; |
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 225 sub algebra {
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Line 279 sub algebra {
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$parser->normalize(); |
$parser->normalize(); |
my $latex=$parser->tolatex(); |
my $latex=$parser->tolatex(); |
$latex=&postprocess_algebra($latex); |
$latex=&postprocess_algebra($latex); |
$latex='$'.$latex.'$'; |
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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} |
if ($target eq 'web' || $target eq 'analyze') { |
if ($target eq 'web' || $target eq 'analyze') { |
$result = &converted(\$latex); |
$result = &converted(\$latex); |
} else { |
} else { |
Line 240 sub prepare_algebra {
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Line 299 sub prepare_algebra {
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my ($string)=@_; |
my ($string)=@_; |
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# makes the decision about what is a minus sign easier supposedly |
# makes the decision about what is a minus sign easier supposedly |
$string =~ s/([\=\>\<\%\!\#] *)-/$1 zeroplace -/g; |
$string =~ s/(\<\>|\<\=|\>\=[\=\>\<] *)-/$1 zeroplace -/g; |
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return $string; |
return $string; |
} |
} |
Line 273 sub postprocess_algebra {
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Line 332 sub postprocess_algebra {
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# int( ... dx) -> ... |
# int( ... dx) -> ... |
$string =~s/\\int\\left\((.+?)d[a-z]\\right\)/$1/gs; |
$string =~s/\\int\\left\((.+?)d[a-z]\\right\)/$1/gs; |
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&Apache::lonnet::logthis($string); |
# |
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$string =~s/\\lim\\left\((.+?),(.+?),(.+?)\\right\)/\\lim_{$2\\to $3}$1/gs; |
return $string; |
return $string; |
} |
} |
1; |
1; |