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Add sqlite3.oo1.DB.clearKvvfsStorage(). Add controls to kvvfs1.js demo to reset and query the db without requiring the dev console.

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FossilOrigin-Name: d845c6c22bd5d3fffc66e0566df346d690dd8bd1fc1688e312161b1a1edcfd79
This commit is contained in:
stephan
2022-09-12 17:59:04 +00:00
parent 5360f5fcff
commit a002cc174f
9 changed files with 132 additions and 77 deletions
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35
ext/wasm/api/sqlite3-api-oo1.js
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@ -1581,17 +1581,30 @@ self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
}/*oo1 object*/;
if( self.window===self && 0!==capi.sqlite3_vfs_find('kvvfs') ){
/* In the main window thread, add a couple of convenience proxies
for localStorage and sessionStorage DBs... */
let klass = sqlite3.oo1.LocalStorageDb = function(){
dbCtorHelper.call(this, 'local', 'c', 'kvvfs');
/* Features specific to kvvfs... */
/**
Clears all storage used by the kvvfs DB backend, deleting any
DB(s) stored there. Its argument must be either 'session',
'local', or ''. In the first two cases, only sessionStorage
resp. localStorage is cleared. If it's an empty string (the
default) then both are cleared. Only storage keys which match
the pattern used by kvvfs are cleared: any other client-side
data are retained.
*/
DB.clearKvvfsStorage = function(which=''){
const prefix = 'kvvfs-'+which;
const stores = [];
if('session'===which || ''===which) stores.push(sessionStorage);
if('local'===which || ''===which) stores.push(localStorage);
stores.forEach(function(s){
const toRm = [];
let i = 0, k;
for( i = 0; (k = s.key(i)); ++i ){
if(k.startsWith(prefix)) toRm.push(k);
}
toRm.forEach((kk)=>s.removeItem(kk));
});
};
klass.prototype = DB.prototype;
klass = sqlite3.oo1.SessionStorageDb = function(){
dbCtorHelper.call(this, 'session', 'c', 'kvvfs');
};
klass.prototype = DB.prototype;
}
}/* main-window-only bits */
});