physicaldocumentmanager.inc

PHP 知识管理系统（基于树结构的知识管理系统）, 英文原版的PHP源码。

            }
        } else {
        	$default->log->error("PhysicalDocumentManager::delete error looking up document versions, id=" . $oDocument->getID());
        }



		// now move the current version
		if (PhysicalDocumentManager::move($sCurrentPath, $sDeletedPrefix)) {
			return true;
		} else {
			$default->log->error("PhysicalDocumentManager::delete couldn't move $sCurrentPath to $sDeletedPath, documentID=" . $oDocument->getID());
			return false;
		}
	}

	/**
	 * Completely remove a document from the Deleted/ folder
	 *
	 * return boolean true on successful move, false otherwhise
	 */
	function expunge($oDocument) {
		global $default;
		// deleted document path
		$sDeletedPrefix = $default->documentRoot . "/Deleted/" . $oDocument->getID() . "-" . $oDocument->getFileName();

		// find all the previous versions of this document and delete them
		// ie. interrogate transaction history for all CHECKIN transactions and retrieve the versions
		// FIXME: refactor
		$sql = $default->db;
        $sQuery = "SELECT DISTINCT version FROM $default->document_transactions_table WHERE document_id = ? AND transaction_id = ?";/*ok*/
        $aParams = array($oDocument->getID(), CHECKOUT);
		$result = $sql->query(array($sQuery, $aParams));
        if ($result) {
            while ($sql->next_record()) {
            	$sVersion = $sql->f("version");
            	if ($sVersion <> $oDocument->getVersion()) {
					$sExpungePath = $sDeletedPrefix . "-" . $sVersion;
					// zap it
					$default->log->info("PhysicalDocumentManager::expunge rm'ing $sExpungePath");
					if (file_exists($sExpungePath)) {
						if (!@unlink($sExpungePath)) {
							$default->log->error("PhysicalDocumentManager::expunge error deleting $sExpungePath; documentID=" . $oDocument->getID());
							// FIXME: can't bail now since we don't have transactions- so we doggedly continue deleting and logging errors
						}
					} else {
						$default->log->error("PhysicalDocumentManager::expunge can't rm $sExpungePath because it doesn't exist");
					}
            	}
            }
        } else {
        	$default->log->error("PhysicalDocumentManager::expunge error looking up document versions, id=" . $oDocument->getID());
        }

		if (file_exists($sDeletedPrefix)) {
			// now delete the current version
			if (@unlink($sDeletedPrefix)) {
				$default->log->info("PhysicalDocumentManager::expunge  unlinkied $sDeletedPrefix");
				return true;
			} else {
				$default->log->info("PhysicalDocumentManager::expunge couldn't unlink $sDeletedPrefix");
				if (file_exists($sDeletedPrefix)) {
					return false;
				} else {
					return true;
				}
			}
		} else {
			$default->log->info("PhysicalDocumentManager::expunge can't rm $sDeletedPrefix because it doesn't exist");
			return true;
		}
	}

    /**
    * Delete a single version of a document
    *
    * return boolean true on successful delete, false otherwise
    */
    function deleteVersion($oVersion) {
        global $default;
        $iContentId = $oVersion->getContentVersionId();
        $oContentVersion = KTDocumentContentVersion::get($iContentId);

	    $sFullPath = $default->documentRoot.'/'.$oContentVersion->getStoragePath();

	    if (file_exists($sFullPath)) {
            if(@unlink($sFullPath)){
                $default->log->info("PhysicalDocumentManager::deleteVersion  unlinked $sFullPath");
                return true;
            }else{
				$default->log->info("PhysicalDocumentManager::deleteVersion couldn't unlink $sFullPath");
				if (file_exists($sFullPath)) {
					return false;
				} else {
					return true;
				}
            }
	    }else{
			$default->log->info("PhysicalDocumentManager::deleteVersion can't rm $sFullPath because it doesn't exist");
			return true;
	    }
    }

	/**
	 * Restore a document from the Deleted/ folder to the specified folder
	 *
	 * return boolean true on successful move, false otherwhise
	 */
	function restore($oDocument) {
		global $default;

		// deleted document path (includes previous versions)
		$sDeletedPath = $default->documentRoot . "/Deleted/" . $oDocument->getID() . "-" . $oDocument->getFileName();

		// NEW FOLDER REALLY NEEDS TO BE /
		if (is_null($oDocument->getFolderID())) {
		    $oDocument->setFolderID(1);
		}
		//var_dump($oDocument->getFolderID());
		$sRestorePath = Folder::getFolderPath($oDocument->getFolderID()) . "/" . $oDocument->getFileName();

		// find all the previous versions of this document and move them
		// ie. interrogate transaction history for all CHECKIN transactions and retrieve the versions
		// FIXME: refactor
		$sql = $default->db;
        $sQuery = "SELECT DISTINCT version FROM $default->document_transactions_table WHERE document_id = ? AND transaction_id = ?";/*ok*/
        $aParams = array($oDocument->getID(), CHECKOUT);
		$result = $sql->query(array($sQuery, $aParams));
        if ($result) {
            while ($sql->next_record()) {
            	$sVersion = $sql->f("version");
            	if ($sVersion <> $oDocument->getVersion()) {
					$sVersionedDeletedPath = $sDeletedPath . "-" . $sVersion;
					$sVersionedRestorePath = $sRestorePath . "-" . $sVersion;
					// move it to the new folder
					$default->log->info("PhysicalDocumentManager::restore moving $sVersionedDeletedPath to $sVersionedRestorePath");
					if (!PhysicalDocumentManager::move($sVersionedDeletedPath, $sVersionedRestorePath)) {
						$default->log->error("PhysicalDocumentManager::restore error moving $sVersionedDeletedPath to $sVersionedRestorePath; documentID=" . $oDocument->getID());
						// FIXME: can't bail now since we don't have transactions- so we doggedly continue restoring and logging errors
					}
            	}
            }
        } else {
        	$default->log->error("PhysicalDocumentManager::expunge error looking up document versions, id=" . $oDocument->getID());
        }

		// now move the current version
		if (PhysicalDocumentManager::move($sDeletedPath, $sRestorePath)) {
			return true;
		} else {
			$default->log->error("PhysicalDocumentManager::restore couldn't move $sDeletedPath to $sRestorePath, documentID=" . $oDocument->getID());
			return false;
		}
	}


	/**
	* View a document using an inline viewer
	*
	* @param 	Primary key of document to view
	*
	* @return int number of bytes read from file on success or false otherwise;
	*
	* @todo investigate possible problem in MSIE 5.5 concerning Content-Disposition header
	*/
	function inlineViewPhysicalDocument($iDocumentID) {
            //get the document
            $oDocument = & Document::get($iDocumentID);
            //get the path to the document on the server
            $sDocumentFileSystemPath = $oDocument->getPath();
            if (file_exists($sDocumentFileSystemPath)) {
                header("Content-Type: application/octet-stream");
                header("Content-Length: ". $oDocument->getFileSize());
                // prefix the filename presented to the browser to preserve the document extension
                header('Content-Disposition: inline; filename="' . $oDocument->getFileName() . '"');
                header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
                header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
                header("Cache-Control: must-revalidate");
                header("Content-Location: ".$oDocument->getFileName());
                return readfile($sDocumentFileSystemPath);
            } else {
                return false;
            }
	}

	/**
	* Get the uploaded file information and place it into a document object
	*
	* @param	Array containing uploaded file information (use $aFileArray)
	* par		Primary key of folder into which document will be placed
	*
	* @return Document Document object containing uploaded file information
	*/
	function & createDocumentFromUploadedFile($aFileArray, $iFolderID) {
		//get the uploaded document information and put it into a document object
		$oDocument = new Document($aFileArray['name'], $aFileArray['name'], $aFileArray['size'], $_SESSION["userID"], KTMime::getMimeTypeID($aFileArray['type'], $aFileArray['name']), $iFolderID);
		return $oDocument;
	}
}

?>