/**
* Is this point far enough from the end to insert?
*
* Blocks insertion if the current insertion point is less than the minimum
* distance from the end of the content defined in the "from_end" option,
* as measured in the usual units of distance (paragraphs/words/characters).
*
* If an integer is passed, it's treated as a unit of "paragraphs".
*
*/
public static function meets_minimum_distance_from_end($can_insert, $context, $args, $already_inserted)
{
if (!isset($args['from_end'])) {
return $can_insert;
}
if (is_array($args['from_end'])) {
$from_end = array_slice($context['parts'], $context['index'] + 1);
foreach (array('paragraphs', 'words', 'characters') as $unit) {
if (isset($args['from_end'][$unit]) && Comparison::content_less_than($unit, $args['from_end'][$unit], $from_end)) {
$can_insert = false;
}
}
}
if (is_int($args['from_end'])) {
if ($args['from_end'] >= $context['total_paragraphs'] - $context['index']) {
$can_insert = false;
}
}
return $can_insert;
}
/**
* Is this speed bump far enough away from others to insert here?
*
* Blocks a speed bump from being inserted if it doesn't mean the
* distance defined in the speed bump's 'from_speedbump' registration
* arguments.
*/
public static function meets_minimum_distance_from_other_inserts($can_insert, $context, $args, $already_inserted)
{
// Support passing an integer here, which will be treated as a unit of "paragraphs"
if (is_int($args['from_speedbump'])) {
$args['from_speedbump'] = array('paragraphs' => $args['from_speedbump']);
}
if (!is_array($args['from_speedbump'])) {
return $can_insert;
}
if (is_int($args['from_speedbump'])) {
$base_distance_constraints = array('paragraphs' => $args['from_speedbump']);
$from_speed_bump = array();
} else {
$defaults = array('paragraphs' => 1, 'words' => null, 'characters' => null);
$base_distance_constraints = array_intersect_key((array) $args['from_speedbump'], $defaults);
$from_speedbump = array_diff_key($args['from_speedbump'], $defaults);
}
$this_paragraph_index = $context['index'];
if (count($already_inserted)) {
foreach ($already_inserted as $speed_bump) {
$distance_constraints = $base_distance_constraints;
if (isset($from_speedbump[$speed_bump['speed_bump_id']]) && is_array($from_speedbump[$speed_bump['speed_bump_id']])) {
foreach (array('paragraphs', 'words', 'characters') as $unit) {
if (isset($from_speedbump[$speed_bump['speed_bump_id']][$unit])) {
$distance_constraints[$unit] = $from_speedbump[$speed_bump['speed_bump_id']][$unit];
}
}
}
$distance = Text::content_between_points($context['parts'], $speed_bump['index'], $context['index']);
foreach ($distance_constraints as $unit => $measurement) {
if (isset($args['from_speedbump'][$speed_bump['speed_bump_id']]) && isset($args['from_speedbump'][$speed_bump['speed_bump_id']][$unit])) {
$measurement = $args['from_speedbump'][$speed_bump['speed_bump_id']][$unit];
}
if ($measurement && Comparison::content_less_than($unit, $measurement, $distance)) {
$can_insert = false;
}
}
}
}
return $can_insert;
}
