version 1.86, 2008/01/29 11:18:06
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version 1.95, 2009/01/12 04:46:48
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Line 47 use Apache::lonlocal;
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Line 47 use Apache::lonlocal;
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use Apache::lonnet; |
use Apache::lonnet; |
use lib '/home/httpd/lib/perl/'; |
use lib '/home/httpd/lib/perl/'; |
use LONCAPA; |
use LONCAPA; |
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use URI::Escape; |
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use IO::Socket::INET; |
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use IO::Socket::SSL; |
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# ====================================================================== Header |
# ====================================================================== Header |
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Line 79 sub init_tth {
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Line 81 sub init_tth {
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$Apache::lontexconvert::messedup=0; |
$Apache::lontexconvert::messedup=0; |
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# we need this routine because &converted can get called from inside |
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# of the safespace (through &xmlparse('<m>stuff</m>') which doesn't |
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# allow the opcode for alarm, so we need to compile this before we get |
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# into the safe space since opcode checks only occur at compile time |
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sub convert_real { |
sub convert_real { |
my ($texstring)=@_; |
my ($texstring)=@_; |
my ($xmlstring,$errorstring); |
my ($xmlstring,$errorstring); |
Line 113 sub convert_real {
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Line 112 sub convert_real {
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# reasonably well to ⇔. If we get many more of these, |
# reasonably well to ⇔. If we get many more of these, |
# we're going to need to have a translation sub. |
# we're going to need to have a translation sub. |
# |
# |
$xmlstring=~s/\\rightleftharpoons/\&\#8660;/g; |
my $lrharpoon = pack("U", 0x21cc); |
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$xmlstring=~s/\\rightleftharpoons/$lrharpoon/g; |
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&Apache::lonxml::end_alarm(); |
&Apache::lonxml::end_alarm(); |
return ($xmlstring,$errorstring); |
return ($xmlstring,$errorstring); |
Line 218 sub jsMath_converted {
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Line 218 sub jsMath_converted {
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sub tex_engine { |
sub tex_engine { |
if (exists($env{'form.texengine'})) { |
if (exists($env{'form.texengine'})) { |
return $env{'form.texengine'}; |
if ($env{'form.texengine'} ne '') { |
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return $env{'form.texengine'}; |
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} |
} |
} |
if ($env{'request.course.id'} |
if ($env{'request.course.id'} |
&& exists($env{'course.'.$env{'request.course.id'}.'.texengine'})) { |
&& exists($env{'course.'.$env{'request.course.id'}.'.texengine'})) { |
Line 241 sub init_math_support {
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Line 243 sub init_math_support {
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return; |
return; |
} |
} |
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sub mimetex_valign { |
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my ($esc_texstring)=@_; |
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my $valign = 0; |
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my $lonhost = $Apache::lonnet::perlvar{'lonHostID'}; |
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my $hostname = &Apache::lonnet::hostname($lonhost); |
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my $protocol = $Apache::lonnet::protocol{$lonhost}; |
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my $path = '/cgi-bin/mimetex.cgi?'.$esc_texstring; |
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my $socket; |
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&Apache::lonxml::start_alarm(); |
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if ($protocol eq 'https') { |
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$socket = IO::Socket::SSL->new(PeerAddr => $hostname, |
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PeerPort => 'https(443)', |
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Proto => 'tcp'); |
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} else { |
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$socket = IO::Socket::INET->new(PeerAddr => $hostname, |
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PeerPort => 'http(80)', |
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Proto => 'tcp'); |
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} |
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if ($socket) { |
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my $headreq = "HEAD $path HTTP/1.0\r\nUser-Agent: Mozilla/5.0\r\n\r\n"; |
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print $socket $headreq; |
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while (<$socket>) { |
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if (/Vertical\-Align\:\s*?([\-\d]+)/) { |
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$valign = $1; |
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} |
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} |
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if ($protocol eq 'https') { |
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$socket->close(SSL_no_shutdown => 1, |
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SSL_ctx_free => 1); |
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} else { |
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$socket->close(); |
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} |
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} |
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&Apache::lonxml::end_alarm(); |
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return $valign; |
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} |
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sub mimetex_converted { |
sub mimetex_converted { |
my $texstring=shift; |
my $texstring=shift; |
my $displaystyle=&displaystyle($texstring); |
my $displaystyle=&displaystyle($texstring); |
Line 250 sub mimetex_converted {
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Line 289 sub mimetex_converted {
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if ($displaystyle) { |
if ($displaystyle) { |
$$texstring='\\displaystyle \\Large '.$$texstring; |
$$texstring='\\displaystyle \\Large '.$$texstring; |
} |
} |
my $result='<img src="/cgi-bin/mimetex.cgi?'.&escape($$texstring).'" />'; |
my $esc_texstring = &uri_escape($$texstring); |
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my $valign = &mimetex_valign($esc_texstring); |
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my $result='<img src="/cgi-bin/mimetex.cgi?'.$esc_texstring.'" style="vertical-align:'.$valign.'px" alt="$'.$$texstring.'$" />'; |
if ($displaystyle) { |
if ($displaystyle) { |
$result='<center>'.$result.'</center>'; |
$result='<center>'.$result.'</center>'; |
} |
} |
Line 350 sub msgtexconverted {
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Line 391 sub msgtexconverted {
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sub algebra { |
sub algebra { |
use AlgParser; |
use AlgParser; |
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my ($string,$target,$style)=@_; |
my ($string,$target,$style,$parstack,$safeeval)=@_; |
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 367 sub algebra {
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Line 408 sub algebra {
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$latex='\\ensuremath{'.$latex.'}'; |
$latex='\\ensuremath{'.$latex.'}'; |
} |
} |
if ($target eq 'web' || $target eq 'analyze') { |
if ($target eq 'web' || $target eq 'analyze') { |
$result = &converted(\$latex); |
my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval); |
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$result = &converted(\$latex,$display); |
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# $result = &converted(\$latex); |
} else { |
} else { |
$result = $latex; |
$result = $latex; |
} |
} |
Line 414 sub postprocess_algebra {
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Line 457 sub postprocess_algebra {
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__END__ |
__END__ |
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=pod |
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=head1 NAME |
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Apache::lontexconvert; |
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=head1 SYNOPSIS |
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Access to tth/ttm |
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This is part of the LearningOnline Network with CAPA project |
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described at http://www.lon-capa.org. |
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=head1 SUBROUTINES |
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=over |
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=item init_tth() |
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Header |
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=item convert_real() |
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we need this routine because &converted can get called from inside |
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of the safespace (through &xmlparse('<m>stuff</m>') which doesn't |
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allow the opcode for alarm, so we need to compile this before we get |
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into the safe space since opcode checks only occur at compile time |
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=item tth_converted() |
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=item clean_out_math_mode() |
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=item displaystyle() |
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=item jsMath_converted() |
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=item tex_engine() |
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=item init_math_support() |
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=item mimetex_converted() |
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=item converted() |
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=item to_convert() |
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message display |
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=item smiley() |
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??? |
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=item msgtexconverted() |
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=item algebra() |
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=item prepare_algebra() |
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=item postprocess_algebra() |
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=back |
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=cut |
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