function filter_tex_get_cmd($pathname, $texexp)
{
$texexp = filter_tex_sanitize_formula($texexp);
$texexp = escapeshellarg($texexp);
$executable = filter_tex_get_executable(false);
if (PHP_OS == "WINNT" || PHP_OS == "WIN32" || PHP_OS == "Windows") {
$executable = str_replace(' ', '^ ', $executable);
return "{$executable} ++ -e \"{$pathname}\" -- {$texexp}";
} else {
return "\"{$executable}\" -e \"{$pathname}\" -- {$texexp}";
}
}
/**
* Turn the bit of TeX into a valid latex document
* @param string $forumula the TeX formula
* @param int $fontsize the font size
* @return string the latex document
*/
function construct_latex_document($formula, $fontsize = 12)
{
global $CFG;
$formula = filter_tex_sanitize_formula($formula);
// $fontsize don't affects to formula's size. $density can change size
$doc = "\\documentclass[{$fontsize}pt]{article}\n";
$doc .= $CFG->filter_tex_latexpreamble;
$doc .= "\\pagestyle{empty}\n";
$doc .= "\\begin{document}\n";
//dlnsk $doc .= "$ {$formula} $\n";
if (preg_match("/^[[:space:]]*\\\\begin\\{(gather|align|alignat|multline).?\\}/i", $formula)) {
$doc .= "{$formula}\n";
} else {
$doc .= "\$ {$formula} \$\n";
}
$doc .= "\\end{document}\n";
return $doc;
}
