113 lines
3.1 KiB
PHP
113 lines
3.1 KiB
PHP
<?php
|
|
|
|
class ComicPressStoryline {
|
|
var $_structure;
|
|
|
|
/**
|
|
* Create a searchable structure from a node list.
|
|
* @param array $structure The structure to process.
|
|
* @return boolean True if the structure was valid.
|
|
*/
|
|
function create_structure($structure) {
|
|
$new_structure = array();
|
|
$parent = null;
|
|
$all_leaves = array();
|
|
|
|
$adjacents_by_parent = array();
|
|
|
|
if (is_array($structure)) {
|
|
$is_valid = true;
|
|
foreach ($structure as $branch) {
|
|
if (is_string($branch)) {
|
|
$parts = explode('/', $branch);
|
|
$valid = false;
|
|
if (count($parts) > 1) {
|
|
if ($parts[0] == '0') { $valid = true; }
|
|
}
|
|
if (!$valid) {
|
|
$is_valid = false; break;
|
|
} else {
|
|
$data = array();
|
|
$leaf = end($parts);
|
|
$all_leaves[] = $leaf;
|
|
|
|
if (count($parts) > 2) {
|
|
$parent = $parts[count($parts) - 2];
|
|
|
|
if (!isset($adjacents_by_parent[$parent])) {
|
|
$adjacents_by_parent[$parent] = array();
|
|
}
|
|
$adjacents_by_parent[$parent][] = $leaf;
|
|
|
|
$data['parent'] = $parent;
|
|
}
|
|
|
|
$new_structure[$leaf] = $data;
|
|
}
|
|
} else {
|
|
$is_valid = false; break;
|
|
}
|
|
}
|
|
if ($is_valid) {
|
|
foreach ($adjacents_by_parent as $parent => $adjacents) {
|
|
for ($i = 0; $i < count($adjacents); ++$i) {
|
|
foreach (array('previous' => -1, 'next' => 1) as $type => $dir) {
|
|
if (isset($adjacents[$i + $dir])) {
|
|
$new_structure[$adjacents[$i]][$type] = $adjacents[$i + $dir];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
for ($i = 0; $i < count($all_leaves); ++$i) {
|
|
foreach (array('prior' => -1, 'upcoming' => 1) as $type => $dir) {
|
|
if (isset($all_leaves[$i + $dir])) {
|
|
$new_structure[$all_leaves[$i]][$type] = $all_leaves[$i + $dir];
|
|
}
|
|
}
|
|
}
|
|
|
|
$this->_structure = $new_structure;
|
|
}
|
|
}
|
|
return is_array($this->_structure);
|
|
}
|
|
|
|
function _get_field($field, $id) {
|
|
if (isset($this->_structure)) {
|
|
if (isset($this->_structure[$id])) {
|
|
if (isset($this->_structure[$id][$field])) {
|
|
return $this->_structure[$id][$field];
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function parent($id) { return $this->_get_field('parent', $id); }
|
|
function previous($id) { return $this->_get_field('previous', $id); }
|
|
function next($id) { return $this->_get_field('next', $id); }
|
|
function upcoming($id) { return $this->_get_field('upcoming', $id); }
|
|
function prior($id) { return $this->_get_field('prior', $id); }
|
|
function valid($id) {
|
|
if (isset($this->_structure[$id])) {
|
|
return array_keys($this->_structure[$id]);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function get_valid_storyline_nav($post_id) {
|
|
$data = false;
|
|
|
|
foreach (wp_get_post_categories($post_id) as $category) {
|
|
if ($result = $this->valid($category)) {
|
|
if ($data) { return false; }
|
|
|
|
$data = $result;
|
|
}
|
|
}
|
|
return $data;
|
|
}
|
|
}
|
|
|
|
?>
|