Module utils

Some tools for implementing VFS

Modules

x_methods_shim

Some x methods simulated using JS

Macros

bail

Return error code if expr is true.

check_option

Unpack Option.

check_result

Unpack Ok.

unused

Mark unused parameter

Structs

FragileComfirmed

A FragileComfirmed<T> wraps a non sendable T to be safely send to other threads.

MemLinearFile

Linear storage in memory, used for temporary DB

SQLiteVfsFile

The actual pFile type in Vfs.

VfsAppData

Wrapper for pAppData

VfsError

Used to log and retrieve Vfs errors

Enums

ImportDbError

RegisterVfsError

Possible errors when registering Vfs

Constants

SQLITE3_HEADER

The header of the SQLite file is used to determine whether the imported file is legal.

Traits

SQLiteIoMethods

Abstraction of SQLite vfs’s io methods

SQLiteVfs

Abstraction of SQLite vfs

VfsFile

Some basic capabilities of file

VfsStore

Make changes to files

Functions

check_db_and_page_size

Check db and page size, page size must be a power of two between 512 and 65536 inclusive, db size must be a multiple of page size.

check_import_db

Simple verification when importing db, and return page size;

copy_to_slice

Copy Uint8Array to slice

copy_to_uint8_array

Copy slice and return new Uint8Array

copy_to_uint8_array_subarray

Copy slice to Unit8Array

copy_to_vec

Copy Uint8Array and return new Vec<u8>

get_random_name

get random name if zFileName is null and other cases

page_read

Generic function for reading by page (block)

register_vfs

Register vfs general method

Type Aliases

VfsResult

Wrapper for Result