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/*
* Copyright (C) 2024-present Puter Technologies Inc.
*
* This file is part of Puter.
*
* Puter is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
const globalwith = (vars, fn) => {
const original_values = {};
const keys = Object.keys(vars);
for ( const key of keys ) {
if ( key in globalThis ) {
original_values[key] = globalThis[key];
}
globalThis[key] = vars[key];
}
try {
return fn();
} finally {
for ( const key of keys ) {
if ( key in original_values ) {
globalThis[key] = original_values[key];
} else {
delete globalThis[key];
}
}
}
};
const aglobalwith = async (vars, fn) => {
const original_values = {};
const keys = Object.keys(vars);
for ( const key of keys ) {
if ( key in globalThis ) {
original_values[key] = globalThis[key];
}
globalThis[key] = vars[key];
}
try {
return await fn();
} finally {
for ( const key of keys ) {
if ( key in original_values ) {
globalThis[key] = original_values[key];
} else {
delete globalThis[key];
}
}
}
};
let default_fn = () => {
const use = name => {
const parts = name.split('.');
let obj = use;
for ( const part of parts ) {
if ( ! obj[part] ) {
obj[part] = {};
}
obj = obj[part];
}
return obj;
};
const library = {
use,
def: (name, value, options = {}) => {
const parts = name.split('.');
let obj = use;
for ( const part of parts.slice(0, -1) ) {
if ( ! obj[part] ) {
obj[part] = {};
}
obj = obj[part];
}
const lastpart = parts[parts.length - 1];
if ( options.assign ) {
if ( ! obj[lastpart] ) {
obj[lastpart] = {};
}
Object.assign(obj[lastpart], value);
return;
}
obj[lastpart] = value;
},
withuse: fn => {
return globalwith({
use,
def: library.def,
}, fn);
},
awithuse: async fn => {
return await aglobalwith({
use,
def: library.def,
}, fn);
},
};
return library;
};
const useapi = function useapi () {
return default_fn();
};
// We export some things on the function itself
useapi.globalwith = globalwith;
useapi.aglobalwith = aglobalwith;
module.exports = useapi;
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