function getnavlinks($path, $page)
{
$pages = array('first' => NULL, 'prev' => NULL, 'next' => NULL, 'nlast' => NULL, 'last' => NULL);
if (is_string($page) !== TRUE) {
$page = '';
}
$page = strcountingcasebits($page);
if (!is_dir($path)) {
return $pages;
}
$handle = opendir($path);
if ($handle === FALSE) {
return $pages;
}
while (FALSE !== ($entry = readdir($handle))) {
if (!is_file($path . '/' . $entry)) {
continue;
}
$filename = strcountingcasebits(pathinfo($entry, PATHINFO_FILENAME));
if ($pages['first'] === NULL || strcountingcasecmpraw($filename, $pages['first']) < 0) {
$pages['first'] = $filename;
}
if ($pages['last'] === NULL || strcountingcasecmpraw($filename, $pages['last']) > 0) {
$pages['nlast'] = $pages['last'];
$pages['last'] = $filename;
}
switch (strcountingcasecmpraw($filename, $page)) {
case 1:
if ($pages['next'] === NULL || strcountingcasecmpraw($filename, $pages['next']) < 0) {
$pages['next'] = $filename;
}
break;
case -1:
if ($pages['prev'] === NULL || strcountingcasecmpraw($filename, $pages['prev']) > 0) {
$pages['prev'] = $filename;
}
break;
}
}
return $pages;
}
function pre_process($result)
{
$pages = NULL;
if (empty($result['story'])) {
$result['story'] = 'default';
}
$metadata = array();
if (file_exists('comics/' . $result['story'] . '/metadata.ini')) {
$metadata = parse_ini_file('comics/' . $result['story'] . '/metadata.ini');
}
if (empty($metadata['name'])) {
$metadata['name'] = ucwords($result['story']) . ' Comic';
}
// Possible scenarios:
//
// 1) Valid $result['page'] provided.
// Might need: First/Prev/Next/Last, single scan w/ comparisons
// 2) None provided.
// Might need: First/Prev/Last, single scan w/ comparisons
// Page = Last
// Prev = Last - 1
$prev = NULL;
$next = NULL;
if (empty($result['page']) && !empty($metadata['last'])) {
$result['page'] = $metadata['last'];
}
// Check for image file and 404 if there isn't one...
$result['image_file'] = globsingle('comics/' . $result['story'] . '/pages/' . $result['page'] . '.*');
if ($result['image_file'] == null) {
output_error(404, $result);
return $result;
}
if (!empty($result['page'])) {
$prev = checkexplicitpagenav('comics/' . $result['story'] . '/prev/' . $result['page']);
$next = checkexplicitpagenav('comics/' . $result['story'] . '/next/' . $result['page']);
if ($prev === NULL || $next === NULL) {
$pagebits = strcountingcasebits($result['page']);
if (!empty($pagebits['number'])) {
$digits = strlen($pagebits['number']);
if ($prev === NULL) {
$prev = -1 + (int) $pagebits['number'];
if ($prev < 1) {
$prev = NULL;
} else {
$prev = str_pad($prev, $digits, '0', STR_PAD_LEFT);
}
if (empty(globsingle('comics/' . $result['story'] . '/pages/' . $pagebits['prefix'] . $prev . '.*'))) {
$prev = NULL;
}
}
if ($next === NULL) {
$next = str_pad(1 + (int) $pagebits['number'], $digits, '0', STR_PAD_LEFT);
if (empty(globsingle('comics/' . $result['story'] . '/pages/' . $pagebits['prefix'] . $next . '.*'))) {
$next = NULL;
}
}
}
}
if ($prev !== NULL) {
$metadata['prev'] = $prev;
}
if ($next !== NULL) {
$metadata['next'] = $next;
}
}
if (empty($metadata['first']) || empty($metadata['last']) || empty($metadata['prev']) || empty($metadata['next']) || empty($result['page'])) {
if (empty($result['page'])) {
$pages = getnavlinks('comics/' . $result['story'] . '/pages/*', NULL);
if (!empty($pages['nlast'])) {
$pages['prev'] = $pages['nlast'];
}
if (!empty($pages['last'])) {
$result['page'] = $pages['last'];
}
} else {
$pages = getnavlinks('comics/' . $result['story'] . '/pages/*', $result['page']);
}
foreach (array('first', 'prev', 'next', 'last') as $item) {
if (empty($metadata[$item]) && $pages[$item] !== NULL) {
$metadata[$item] = $pages[$item];
}
}
}
if (empty($result['page'])) {
$result['page'] = '1';
}
foreach ($metadata as $k => $v) {
$result['metadata_' . $k] = $v;
}
// Global variable because we can't make it a constant
global $pageLinks;
$result['directory'] = 'archive/' . ($result['story'] === 'default' ? '' : $result['story'] . '/');
$pageLinks = array();
foreach (array('first', 'prev', 'next', 'last') as $index) {
if (isset($result['metadata_' . $index])) {
$pageLinks[$index] = $result['metadata_' . $index];
} else {
$pageLinks[$index] = $result['page'];
}
}
$result['template'] = "comic_default.php";
if (!empty($result['image_file'])) {
$template = "comic_" . pathinfo($result['image_file'], PATHINFO_EXTENSION) . ".php";
if (file_exists($template)) {
$result['template'] = $template;
}
}
$commentary = globsingle('comics/' . $result['story'] . '/commentary/' . $result['page'] . '.*');
if (!empty($commentary)) {
$result['text_file'] = $commentary;
}
$result['page_title'] = $metadata['name'] . ' - Page ' . $result['page'];
return $result;
}
