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31 #ifndef SQLiteFileSystem_h
32 #define SQLiteFileSystem_h
34 #include "PlatformString.h"
35 #include <wtf/Threading.h>
43 // A class that abstracts the file system related operations required
44 // by the WebKit database code.
45 class SQLiteFileSystem {
47 // Registers a user-defined SQLite VFS.
48 static void registerSQLiteVFS();
50 // Opens a database file.
52 // fileName - The name of the database file.
53 // database - The SQLite structure that represents the database stored
55 // forWebSQLDatabase - True, if and only if we're opening a Web SQL Database file.
56 // Used by Chromium to determine if the DB file needs to be opened
57 // using a custom VFS.
58 static int openDatabase(const String& fileName, sqlite3** database, bool forWebSQLDatabase);
60 // Returns the file name for a database.
62 // dbDir - The directory where all databases are stored.
63 // dbName - The name of the database.
64 // originIdentifier - The origin that wants to use this database.
65 // db - A database with a number generator used to create unique file names.
66 static String getFileNameForNewDatabase(const String& dbDir, const String& dbName,
67 const String& originIdentifier, SQLiteDatabase* db);
69 // Creates an absolute file path given a directory and a file name.
71 // path - The directory.
72 // fileName - The file name.
73 static String appendDatabaseFileNameToPath(const String& path, const String& fileName);
75 // Makes sure the given directory exists, by creating all missing directories
78 // path - The directory.
79 static bool ensureDatabaseDirectoryExists(const String& path);
81 // If 'checkPathOnly' is false, then this method only checks if the given file exists.
82 // If 'checkPathOnly' is true, then this method makes sure all directories on the
83 // given path exist by creating the missing ones, and does not check if the file
86 // Sometimes we expect a DB file to exist; other times, we're OK with creating a new
87 // DB file, but we want to make sure that the directory in which we want to put the
88 // new DB file exists. This method covers both cases.
90 // fileName - The file name.
91 // checkPathOnly - If true, we only make sure that the given directory exists.
92 // If false, we only check if the file exists.
93 static bool ensureDatabaseFileExists(const String& fileName, bool checkPathOnly);
95 // Deletes an empty database directory.
97 // path - The directory.
98 static bool deleteEmptyDatabaseDirectory(const String& path);
100 // Deletes a database file.
102 // fileName - The file name.
103 static bool deleteDatabaseFile(const String& fileName);
105 // Returns the size of the database file.
107 // fileName - The file name.
108 static long long getDatabaseFileSize(const String& fileName);
111 // do not instantiate this class
113 }; // class SQLiteFileSystem
115 } // namespace WebCore