public function get_maxima_available()
{
if ('unix' != stack_connection_helper::get_platform()) {
return stack_string('healthunabletolistavail');
}
$this->command = 'maxima --list-avail';
$rawresult = $this->call_maxima('');
return $rawresult;
}
public function compute($command)
{
$context = "Platform: " . stack_connection_helper::get_platform() . "\n";
$context .= "Maxima shell command: " . $this->command . "\n";
$context .= "Maxima initial command: " . $this->initcommand . "\n";
$context .= "Maxima timeout: " . $this->timeout;
$this->debug->log('Context used', $context);
$this->debug->log('Maxima command', $command);
$rawresult = $this->call_maxima($command);
$this->debug->log('CAS result', $rawresult);
$unpackedresult = $this->unpack_raw_result($rawresult);
$this->debug->log('Unpacked result as', print_r($unpackedresult, true));
if (!stack_connection_helper::check_stackmaxima_version($unpackedresult)) {
stack_connection_helper::warn_about_version_mismatch($this->debug);
}
return $unpackedresult;
}
protected function guess_maxima_command($path)
{
global $CFG;
if (stack_connection_helper::get_platform() == 'unix-optimised') {
// We are trying to use a Lisp snapshot of Maxima with all the
// STACK libraries loaded.
$lispimage = $CFG->dataroot . '/stack/maxima-optimised';
if (is_readable($lispimage)) {
return $lispimage;
}
}
if (is_readable('/Applications/Maxima.app/Contents/Resources/maxima.sh')) {
// This is the path on Macs, if Maxima has been installed following
// the instructions on Sourceforge.
return '/Applications/Maxima.app/Contents/Resources/maxima.sh';
}
// Default guess on Linux.
return 'maxima';
}
