public function test_intersect()
{
$master = new mlang_component('moodle', 'en', mlang_version::by_branch('MOODLE_18_STABLE'));
$master->add_string(new mlang_string('one', 'One'));
$master->add_string(new mlang_string('two', 'Two'));
$master->add_string(new mlang_string('three', 'Three'));
$slave = new mlang_component('moodle', 'cs', mlang_version::by_branch('MOODLE_18_STABLE'));
$slave->add_string(new mlang_string('one', 'Jedna'));
$slave->add_string(new mlang_string('two', 'Dva'));
$slave->add_string(new mlang_string('seven', 'Sedm'));
$slave->add_string(new mlang_string('eight', 'Osm'));
$slave->intersect($master);
$this->assertEqual(2, count($slave->get_string_keys()));
$this->assertTrue($slave->has_string('one'));
$this->assertTrue($slave->has_string('two'));
}
/**
* Prunes the strings, keeping just those defined in given $mask as well
*
* This may be used to get rid of strings that are not defined in another component.
* Typically can be used to clean the translation from strings that are not defined in
* the master English pack.
* Beware - if the string is defined in $mask as deleted, it will be kept in this regardless
* its state.
*
* @param mlang_component $mask master component to compare strings with
* @return int number of removed strings
*/
public function intersect(mlang_component $mask)
{
$removed = 0;
$masked = array_flip($mask->get_string_keys());
foreach (array_keys($this->strings) as $key) {
if (!isset($masked[$key])) {
$this->unlink_string($key);
$removed++;
}
}
return $removed;
}