2022-07-13 04:09:24 -07:00

81 lines
2.6 KiB
TypeScript

/**
* Copyright 2017 Google Inc. All rights reserved.
* Modifications copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import fs from 'fs';
let didFailToReadOSRelease = false;
let osRelease: {
id: string,
version: string,
} | undefined;
export async function getLinuxDistributionInfo(): Promise<{ id: string, version: string } | undefined> {
if (process.platform !== 'linux')
return undefined;
if (!osRelease && !didFailToReadOSRelease) {
try {
// List of /etc/os-release values for different distributions could be
// found here: https://gist.github.com/aslushnikov/8ceddb8288e4cf9db3039c02e0f4fb75
const osReleaseText = await fs.promises.readFile('/etc/os-release', 'utf8');
const fields = parseOSReleaseText(osReleaseText);
osRelease = {
id: fields.get('id') ?? '',
version: fields.get('version_id') ?? '',
};
} catch (e) {
didFailToReadOSRelease = true;
}
}
return osRelease;
}
export function getLinuxDistributionInfoSync(): { id: string, version: string } | undefined {
if (process.platform !== 'linux')
return undefined;
if (!osRelease && !didFailToReadOSRelease) {
try {
// List of /etc/os-release values for different distributions could be
// found here: https://gist.github.com/aslushnikov/8ceddb8288e4cf9db3039c02e0f4fb75
const osReleaseText = fs.readFileSync('/etc/os-release', 'utf8');
const fields = parseOSReleaseText(osReleaseText);
osRelease = {
id: fields.get('id') ?? '',
version: fields.get('version_id') ?? '',
};
} catch (e) {
didFailToReadOSRelease = true;
}
}
return osRelease;
}
function parseOSReleaseText(osReleaseText: string): Map<string, string> {
const fields = new Map();
for (const line of osReleaseText.split('\n')) {
const tokens = line.split('=');
const name = tokens.shift();
let value = tokens.join('=').trim();
if (value.startsWith('"') && value.endsWith('"'))
value = value.substring(1, value.length - 1);
if (!name)
continue;
fields.set(name.toLowerCase(), value);
}
return fields;
}