version 1.109, 2011/12/06 16:10:53
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version 1.110, 2012/02/28 10:38:14
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Line 50 use LONCAPA;
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Line 50 use LONCAPA;
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use URI::Escape; |
use URI::Escape; |
use IO::Socket::INET; |
use IO::Socket::INET; |
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# |
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# Table of substitutions to unicode characters. |
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# |
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my %unicode_translations = ( |
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'\rightleftharpoons' => 0x21cc, |
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'' => 0x23a1, |
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'' => 0x23a2, |
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'' => 0x23a3, |
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'' => 0x23a4, |
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'' => 0x23a5, |
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'' => 0x23a6 |
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); |
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## |
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# Utility to convert elements of a string to unicode: |
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# |
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# @param input - Input string |
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# @param pattern - Pattern to convert |
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# @param unicode - Unicode to substitute for pattern. |
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# |
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# @return string - resulting string. |
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# |
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sub unicode_subst { |
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my ($input, $pattern, $unicode) = @_; |
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my $char = pack('U', $unicode); |
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$input =~ s/$pattern/$char/g; |
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return $input; |
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} |
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# ====================================================================== Header |
# ====================================================================== Header |
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sub init_tth { |
sub init_tth { |
Line 93 sub convert_real {
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Line 126 sub convert_real {
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}; |
}; |
&Apache::lonxml::start_alarm(); |
&Apache::lonxml::start_alarm(); |
if ($env{'browser.mathml'}) { |
if ($env{'browser.mathml'}) { |
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&Apache::lonnet::logthis("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; |
$xmlstring=~s/\<p\>/\<p\>\<\/p\>/g; |
$xmlstring=~s/\<p\>/\<p\>\<\/p\>/g; |
$errorstring.=&tth::ttmerror(); |
$errorstring.=&tth::ttmerror(); |
} else { |
} else { |
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&Apache::lonnet::logthis("tth"); |
$xmlstring=&tth::tth($$texstring); |
$xmlstring=&tth::tth($$texstring); |
$errorstring.=&tth::ttherror(); |
$errorstring.=&tth::ttherror(); |
$xmlstring=~s-</font(\s*)>-</font>-g; |
$xmlstring=~s-</font(\s*)>-</font>-g; |
Line 106 sub convert_real {
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Line 141 sub convert_real {
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$xmlstring=~s/^\s*\<br clear\=\"all\"/\<br/s; |
$xmlstring=~s/^\s*\<br clear\=\"all\"/\<br/s; |
$xmlstring=~s/^\s*//; |
$xmlstring=~s/^\s*//; |
$xmlstring=~s/\s*$//; |
$xmlstring=~s/\s*$//; |
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&Apache::lonxml::end_alarm(); |
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# |
# |
# \rightleftharpoons is not converted by tth but maps |
# Several strings produced by tth require |
# reasonably well to ⇔. If we get many more of these, |
# transliteration -> unicode equivalents to render reliably |
# we're going to need to have a translation sub. |
# in browsers. %unicode_translations is a table of |
# |
# string->substitution which we now apply: |
my $lrharpoon = pack("U", 0x21cc); |
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$xmlstring=~s/\\rightleftharpoons/$lrharpoon/g; |
foreach my $pattern (keys(%unicode_translations)) { |
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my $unicode = $unicode_translations{$pattern}; |
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$xmlstring = &unicode_subst($xmlstring, $pattern, $unicode); |
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} |
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&Apache::lonxml::end_alarm(); |
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return ($xmlstring,$errorstring); |
return ($xmlstring,$errorstring); |
} |
} |
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