public function __construct()
{
parent::__construct("https://i-share.carli.illinois.edu/newbooks/newbooks.cgi?library=WHEdb&list=all&day=7&op=and&text=&lang=English&submit=RSS");
$nitems = count($this->xml->channel->item);
for ($i = 0; $i < $nitems; ++$i) {
$tidy_desc = \str_replace(array('<B>', '</B>', '<description>', '</description>'), '', $this->xml->channel->item[$i]->description->asXML());
$matches = array();
if (\preg_match('@<img border="0" src="(.*)" vspace="3" border="0" align="right"/>@', $tidy_desc, $matches)) {
if (\util\Utility::isValidImage($matches[1])) {
$imgurl = $matches[1];
} else {
$imgurl = "";
}
$tidy_desc = str_replace($matches[0], '', $tidy_desc);
} else {
$imgurl = "";
}
$fieldstr = \explode('<BR/>', $tidy_desc);
$this->xml->channel->item[$i]->description = \implode("\n", $fieldstr);
$fields = array();
foreach ($fieldstr as $f) {
//separate field name and field value
$matches = array();
if (\preg_match("/^([-a-zA-Z_ ]*[a-zA-Z]{4}): /", $f, $matches)) {
$fname = \strtolower(str_replace(' ', '_', \trim($matches[1])));
$fvalue = \trim(str_replace($matches[0], '', $f));
$fields[$fname] = $fvalue;
$this->xml->channel->item[$i]->addChild($fname, $fvalue);
}
}
$cn_data = \cn\processor\Factory::make($fields)->data();
foreach ($cn_data as $name => $value) {
$name = \htmlspecialchars($name);
$value = \htmlspecialchars($value);
$this->xml->channel->item[$i]->addChild($name, $value);
}
unset($this->xml->channel->item[$i]->description[0]);
if (!\util\Utility::isValidImage($imgurl)) {
$imgurl = "";
}
$this->xml->channel->item[$i]->addChild('cover', $imgurl);
}
}
private static function normalize($cn)
{
$cn_orig = $cn;
$regex_alpha = "([A-Z]{1,3})";
$regex_num = "([0-9]{0,4})";
$regex_extra = "([ ]?\\.[A-Z0-9][0-9]*)";
$regex = "/^{$regex_alpha}{$regex_num}?{$regex_extra}?/";
$matches = array();
if (preg_match($regex, $cn, $matches)) {
//normalize alpha
$alpha = $matches[1];
//.\util\Utility::ntimes('*',3-strlen($matches[1]));
//normalize num
if (array_key_exists(2, $matches)) {
$num = $matches[2] . \util\Utility::ntimes('*', 4 - strlen($matches[2]));
} else {
$num = "****";
}
//normalize extra
if (array_key_exists(3, $matches)) {
$extra_match = array();
if (preg_match("/([A-Z])/", $matches[3], $extra_match)) {
$ch = $extra_match[0];
$i = 2;
} else {
$ch = '*';
$i = 1;
}
$extra = $ch . substr($matches[3], $i);
} else {
$extra = "";
}
return str_split($alpha . $num . $extra);
}
error_log("failed to normalize: {$cn_orig}");
return;
}
public function matches($range)
{
foreach (\util\Utility::parseRange($range) as $r) {
if (count($r) === 1) {
if ($this->equals($r[0])) {
return true;
}
} else {
if ($this->greaterThan($r[0]) && $this->lessThan($r[1])) {
return true;
}
}
}
return false;
}
