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/*
* Copyright (C) 2009 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SQLiteFileSystem_h
#define SQLiteFileSystem_h
#include <wtf/WallTime.h>
#include <wtf/text/WTFString.h>
struct sqlite3;
namespace WebCore {
class SQLiteDatabase;
// A class that abstracts the file system related operations required
// by the WebKit database code.
class SQLiteFileSystem {
public:
// Creates an absolute file path given a directory and a file name.
//
// path - The directory.
// fileName - The file name.
WEBCORE_EXPORT static String appendDatabaseFileNameToPath(StringView path, StringView fileName);
// Makes sure the given directory exists, by creating all missing directories
// on the given path.
//
// path - The directory.
WEBCORE_EXPORT static bool ensureDatabaseDirectoryExists(const String& path);
// If 'checkPathOnly' is false, then this method only checks if the given file exists.
// If 'checkPathOnly' is true, then this method makes sure all directories on the
// given path exist by creating the missing ones, and does not check if the file
// itself exists.
//
// Sometimes we expect a DB file to exist; other times, we're OK with creating a new
// DB file, but we want to make sure that the directory in which we want to put the
// new DB file exists. This method covers both cases.
//
// fileName - The file name.
// checkPathOnly - If true, we only make sure that the given directory exists.
// If false, we only check if the file exists.
static bool ensureDatabaseFileExists(const String& fileName, bool checkPathOnly);
// Deletes an empty database directory.
//
// path - The directory.
static bool deleteEmptyDatabaseDirectory(const String& path);
// Deletes a database file.
//
// fileName - The file name.
WEBCORE_EXPORT static bool deleteDatabaseFile(const String& filePath);
#if PLATFORM(COCOA)
static void setCanSuspendLockedFileAttribute(const String& filePath);
#endif
// Moves a database file to a new place.
WEBCORE_EXPORT static bool moveDatabaseFile(const String& oldFilePath, const String& newFilePath);
WEBCORE_EXPORT static String computeHashForFileName(StringView filePath);
#if PLATFORM(IOS_FAMILY)
// Truncates a database file. Used when MobileSafariSettings deletes a database file,
// since deleting the file nukes the POSIX file locks which would potentially cause Safari
// to corrupt the new db if it's running in the background.
static bool truncateDatabaseFile(sqlite3* database);
#endif
WEBCORE_EXPORT static uint64_t databaseFileSize(const String& fileName);
WEBCORE_EXPORT static std::optional<WallTime> databaseCreationTime(const String& fileName);
WEBCORE_EXPORT static std::optional<WallTime> databaseModificationTime(const String& fileName);
private:
// do not instantiate this class
SQLiteFileSystem();
}; // class SQLiteFileSystem
} // namespace WebCore
#endif
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