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/*
This file is part of GNU Taler
(C) 2021 Taler Systems S.A.
GNU Taler is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
GNU Taler 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 General Public License for more details.
You should have received a copy of the GNU General Public License along with
GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* Imports.
*/
import path from "path";
import fs from "fs";
/**
* Resolve an asset name into an absolute filename.
*
* The asset file should be placed in the "assets" directory
* at the top level of the package (i.e. next to package.json).
*/
export function resolveAsset(name: string): string | null {
const n = __filename;
const d = __dirname;
let assetPath: string;
// Currently both asset paths are the same.
// This might change if the file that contains "resolveAsset"
// ever moves. Thus, we're keeping the case distinction.
if (n.endsWith("assets.js")) {
// We're not bundled. Path is relative to the current file.
assetPath = path.resolve(path.join(d, "..", "assets", name));
} else if (n.endsWith("taler-wallet-cli.js")) {
// We're bundled. Currently, this path is the same
// FIXME: Take into account some ASSETS environment variable?
assetPath = path.resolve(path.join(d, "..", "assets", name));
} else {
throw Error("Can't resolve asset (unknown )");
}
if (!fs.existsSync(assetPath)) {
throw Error(`Asset '${name} not found'`);
}
return assetPath;
}
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