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Rework sqlite3_wasm_vfs_unlink(), add sqlite3_wasm_db_vfs(), update some docs.

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FossilOrigin-Name: cdd46858f0e63bc7bfce8e339b3db9efdec43b6443ee76563a847f53d0176831
This commit is contained in:
stephan
2022-10-20 05:14:37 +00:00
parent d89a66ec36
commit 842c5ee849
9 changed files with 58 additions and 55 deletions
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36
ext/wasm/api/sqlite3-wasm.c
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@@ -809,28 +809,38 @@ const char * sqlite3_wasm_enum_json(void){
** This function is NOT part of the sqlite3 public API. It is strictly
** for use by the sqlite project's own JS/WASM bindings.
**
** Do not use this function, even for internal use: it was
** ill-conceived and will be removed once the JS code which still
** calls it has been weeded out.
**
** This function invokes the xDelete method of the default VFS,
** passing on the given filename. If zName is NULL, no default VFS is
** found, or it has no xDelete method, SQLITE_MISUSE is returned, else
** the result of the xDelete() call is returned.
** This function invokes the xDelete method of the given VFS (or the
** default VFS if pVfs is NULL), passing on the given filename. If
** zName is NULL, no default VFS is found, or it has no xDelete
** method, SQLITE_MISUSE is returned, else the result of the xDelete()
** call is returned.
*/
SQLITE_WASM_KEEP
int sqlite3_wasm_vfs_unlink(const char * zName){
int sqlite3_wasm_vfs_unlink(sqlite3_vfs *pVfs, const char * zName){
int rc = SQLITE_MISUSE /* ??? */;
sqlite3_vfs * const pVfs = sqlite3_vfs_find(0);
#if defined(__EMSCRIPTEN__)
emscripten_console_warn("sqlite3_wasm_vfs_unlink() will be removed.");
#endif
if( 0==pVfs && 0!=zName ) pVfs = sqlite3_vfs_find(0);
if( zName && pVfs && pVfs->xDelete ){
rc = pVfs->xDelete(pVfs, zName, 1);
}
return rc;
}
/*
** This function is NOT part of the sqlite3 public API. It is strictly
** for use by the sqlite project's own JS/WASM bindings.
**
** Returns a pointer to the given DB's VFS for the given DB name,
** defaulting to "main" if zDbName is 0. Returns 0 if no db with the
** given name is open.
*/
SQLITE_WASM_KEEP
sqlite3_vfs * sqlite3_wasm_db_vfs(sqlite3 *pDb, const char *zDbName){
sqlite3_vfs * pVfs = 0;
sqlite3_file_control(pDb, zDbName ? zDbName : "main",
SQLITE_FCNTL_VFS_POINTER, &pVfs);
return pVfs;
}
/*
** This function is NOT part of the sqlite3 public API. It is strictly
** for use by the sqlite project's own JS/WASM bindings.