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traverse folders in php to search in shared files

This commit is contained in:
Jörn Friedrich Dreyer 2014-07-30 13:46:02 +02:00
parent 54d5d03271
commit a7b4cd77b1
1 changed files with 26 additions and 59 deletions
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85
apps/files_sharing/lib/cache.php
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@ -275,12 +275,34 @@ class Shared_Cache extends Cache {
*/
public function search($pattern) {
$where = '`name` LIKE ? AND ';
$pattern = trim($pattern,'%');
// normalize pattern
$value = $this->normalize($pattern);
$normalizedPattern = $this->normalize($pattern);
return $this->searchWithWhere($where, $value);
$result = array();
$exploreDirs = array('');
while (count($exploreDirs) > 0) {
$dir = array_pop($exploreDirs);
$files = $this->getFolderContents($dir);
// no results?
if (!$files) {
// maybe it's a single shared file
$file = $this->get('');
if ($normalizedPattern === '' || stristr($file['name'], $normalizedPattern) !== false) {
$result[] = $file;
}
continue;
}
foreach ($files as $file) {
if ($normalizedPattern === '' || stristr($file['name'], $normalizedPattern) !== false) {
$result[] = $file;
}
if ($file['mimetype'] === 'httpd/unix-directory') {
$exploreDirs[] = ltrim($dir . '/' . $file['name'], '/');
}
}
}
return $result;
}
@ -297,10 +319,6 @@ class Shared_Cache extends Cache {
$mimetype = null;
}
// note: searchWithWhere is currently broken as it doesn't
// recurse into subdirs nor returns the correct
// file paths, so using getFolderContents() for now
$result = array();
$exploreDirs = array('');
while (count($exploreDirs) > 0) {
@ -326,57 +344,6 @@ class Shared_Cache extends Cache {
return $result;
}
/**
* The maximum number of placeholders that can be used in an SQL query.
* Value MUST be <= 1000 for oracle:
* see ORA-01795 maximum number of expressions in a list is 1000
* FIXME we should get this from doctrine as other DBs allow a lot more placeholders
*/
const MAX_SQL_CHUNK_SIZE = 1000;
/**
* search for files with a custom where clause and value
* the $wherevalue will be array_merge()d with the file id chunks
*
* @param string $sqlwhere
* @param string $wherevalue
* @return array
*/
private function searchWithWhere($sqlwhere, $wherevalue, $chunksize = self::MAX_SQL_CHUNK_SIZE) {
$ids = $this->getAll();
$files = array();
// divide into chunks
$chunks = array_chunk($ids, $chunksize);
foreach ($chunks as $chunk) {
$placeholders = join(',', array_fill(0, count($chunk), '?'));
$sql = 'SELECT `fileid`, `storage`, `path`, `parent`, `name`, `mimetype`, `mimepart`, `size`, `mtime`,
`encrypted`, `unencrypted_size`, `etag`
FROM `*PREFIX*filecache` WHERE ' . $sqlwhere . ' `fileid` IN (' . $placeholders . ')';
$stmt = \OC_DB::prepare($sql);
$result = $stmt->execute(array_merge(array($wherevalue), $chunk));
while ($row = $result->fetchRow()) {
if (substr($row['path'], 0, 6) === 'files/') {
$row['path'] = substr($row['path'], 6); // remove 'files/' from path as it's relative to '/Shared'
}
$row['mimetype'] = $this->getMimetype($row['mimetype']);
$row['mimepart'] = $this->getMimetype($row['mimepart']);
if ($row['encrypted'] or ($row['unencrypted_size'] > 0 and $row['mimetype'] === 'httpd/unix-directory')) {
$row['encrypted_size'] = $row['size'];
$row['size'] = $row['unencrypted_size'];
}
$files[] = $row;
}
}
return $files;
}
/**
* get the size of a folder and set it in the cache
*