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<?php
// $Id$
// TODO: still used by themes, yet doesn't return anything at the moment
function node_index() {
}
function node_get_comments($nid) {
$comment = db_fetch_object(db_query("SELECT COUNT(c.lid) AS number FROM node n LEFT JOIN comments c ON n.nid = c.lid WHERE n.nid = '$nid' GROUP BY n.nid"));
return $comment->number ? $comment->number : 0;
}
function node_teaser($body) {
$size = 400;
/*
** If we have a short body, return the entire body:
*/
if (strlen($body) < $size) {
return $body;
}
/*
** If we have a long body, try not to split paragraphs:
*/
if ($length = strpos($body, "\n", $size)) {
return substr($body, 0, $length + 1);
}
/*
** If we have a long body, try not to split sentences:
*/
return substr($body, 0, strpos($body, ". ", $size) + 1);
}
function node_invoke($node, $name, $arg = 0) {
if (is_array($node)) {
$function = $node[type] ."_$name";
}
else if (is_object($node)) {
$function = $node->type ."_$name";
}
else if (is_string($node)) {
$function = $node ."_$name";
}
if (function_exists($function)) {
return ($arg ? $function($node, $arg) : $function($node));
}
}
function node_object($node) {
if (is_array($node)) {
foreach ($node as $key => $value) {
$object->$key = $value;
}
}
else {
$object = $node;
}
return $object;
}
function node_array($node) {
if (is_object($node)) {
foreach ($node as $key => $value) {
$array[$key] = $value;
}
}
else {
$array = $node;
}
return $array;
}
function node_load($conditions) {
/*
** Turn the conditions into a query:
*/
foreach ($conditions as $key => $value) {
$cond[] = "n.". check_query($key) ." = '". check_query($value) ."'";
}
/*
** Retrieve the node:
*/
$node = db_fetch_object(db_query("SELECT n.*, u.uid, u.name FROM node n LEFT JOIN users u ON u.uid = n.uid WHERE ". implode(" AND ", $cond)));
/*
** Unserialize the revisions field:
*/
if ($node->revisions) {
$node->revisions = unserialize($node->revisions);
}
/*
** Call the node specific callback (if any) and piggy-back to
** results to the node:
*/
if ($extra = module_invoke($node->type, "load", $node)) {
foreach ($extra as $key => $value) {
$node->$key = $value;
}
}
return $node;
}
function node_save($node, $filter) {
$fields = array("nid", "uid", "type", "title", "teaser", "body", "revisions", "score", "status", "comment", "promote", "moderate", "created", "changed", "users", "votes");
foreach ($filter as $key => $value) {
/*
** Only save those fields specified by the filter. If the filter
** does not specify a default value, use the value of the $node's
** corresponding field instead.
*/
if (is_numeric($key)) {
if (isset($node->$value)) {
// The above check is mandatory.
$edit->$value = $node->$value;
}
}
else {
if (isset($value)) {
// The above check is mandatory.
$edit->$key = $value;
}
}
}
$node = $edit;
/*
** Serialize the revisions field:
*/
if ($node->revisions) {
$node->revisions = serialize($node->revisions);
}
if (empty($node->nid)) {
/*
** Insert a new node:
*/
// set some required fields:
$node->created = time();
$node->nid = db_result(db_query("SELECT MAX(nid) + 1 FROM node"));
// prepare the query:
foreach ($node as $key => $value) {
if (in_array($key, $fields)) {
$k[] = check_query($key);
$v[] = "'". check_query($value) ."'";
}
}
// insert the node into the database:
db_query("INSERT INTO node (". implode(", ", $k) .") VALUES (". implode(", ", $v) .")");
// call the node specific callback (if any):
module_invoke($node->type, "insert", $node);
}
else {
/*
** Update an existing node:
*/
// set some required fields:
$node->changed = time();
// prepare the query:
foreach ($node as $key => $value) {
if (in_array($key, $fields)) {
$q[] = check_query($key) ." = '". check_query($value) ."'";
}
}
// update the node in the database:
db_query("UPDATE node SET ". implode(", ", $q) ." WHERE nid = '$node->nid'");
// call the node specific callback (if any):
module_invoke($node->type, "update", $node);
}
/*
** Return the node ID:
*/
return $node->nid;
}
function node_view($node, $main = 0) {
global $theme;
if (is_array($node)) {
$node = node_object($node);
}
/*
** The "view" hook can be implemented to overwrite the default function
** to display nodes.
*/
if (module_hook($node->type, "view")) {
node_invoke($node, "view", $main);
}
else {
/*
** Default behavior:
*/
$theme->node($node, $main);
}
}
?>
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