@jjeem/detect-shell
Version:
detect shells available on the system
110 lines • 4.23 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.detectAvailableShells = exports.getWindowsBuildNumber = void 0;
const os_1 = __importDefault(require("os"));
const pfs_1 = require("./pfs");
const path_1 = require("path");
const powershell_1 = require("./powershell");
const platform = {
isWindows: process.platform === 'win32',
isMacintosh: process.platform === 'darwin',
isLinux: process.platform === 'linux'
};
function getWindowsBuildNumber() {
const osVersion = /(\d+)\.(\d+)\.(\d+)/g.exec(os_1.default.release());
let buildNumber = 0;
if (osVersion && osVersion.length === 4) {
buildNumber = parseInt(osVersion[3]);
}
return buildNumber;
}
exports.getWindowsBuildNumber = getWindowsBuildNumber;
function detectAvailableShells() {
return platform.isWindows ? detectAvailableWindowsShells() : detectAvailableUnixShells();
}
exports.detectAvailableShells = detectAvailableShells;
async function detectAvailableWindowsShells() {
const is32ProcessOn64Windows = process.env.hasOwnProperty('PROCESSOR_ARCHITEW6432');
const system32Path = `${process.env['windir']}\\${is32ProcessOn64Windows ? 'Sysnative' : 'System32'}`;
let useWSLexe = false;
if (getWindowsBuildNumber() >= 16299) {
useWSLexe = true;
}
const expectedLocations = {
'Command Prompt': [`${system32Path}\\cmd.exe`],
'WSL Bash': [`${system32Path}\\${useWSLexe ? 'wsl.exe' : 'bash.exe'}`],
'Git Bash': [
`${process.env['ProgramW6432']}\\Git\\bin\\bash.exe`,
`${process.env['ProgramW6432']}\\Git\\usr\\bin\\bash.exe`,
`${process.env['ProgramFiles']}\\Git\\bin\\bash.exe`,
`${process.env['ProgramFiles']}\\Git\\usr\\bin\\bash.exe`,
`${process.env['LocalAppData']}\\Programs\\Git\\bin\\bash.exe`
],
Cygwin: [
`${process.env['HOMEDRIVE']}\\cygwin64\\bin\\bash.exe`,
`${process.env['HOMEDRIVE']}\\cygwin\\bin\\bash.exe`
],
Nushell: [`${process.env['ProgramFiles']}\\nu\\bin\\nu.exe`]
};
// console.table(expectedLocations);
// Add all of the different kinds of PowerShells
for await (const pwshExe of (0, powershell_1.enumeratePowerShellInstallations)()) {
expectedLocations[pwshExe.displayName] = [pwshExe.exePath];
}
const promises = [];
Object.keys(expectedLocations).forEach((key) => promises.push(validateShellPaths(key, expectedLocations[key])));
const shells = await Promise.all(promises);
return shells.filter((e) => !!e);
}
async function detectAvailableUnixShells() {
const contents = await (0, pfs_1.readFile)('/etc/shells', 'utf8');
const shells = contents
.split('\n')
.filter((e) => e.trim().indexOf('#') !== 0 && e.trim().length > 0);
return shells.map((e) => {
return {
label: (0, path_1.basename)(e),
path: e
};
});
}
async function validateShellPaths(label, potentialPaths) {
if (potentialPaths.length === 0) {
return Promise.resolve(undefined);
}
const current = potentialPaths.shift();
if (current === '') {
return validateShellPaths(label, potentialPaths);
}
try {
const result = await (0, pfs_1.stat)((0, path_1.normalize)(current));
if (result.isFile() || result.isSymbolicLink()) {
return {
label,
path: current
};
}
}
catch (e) {
// Also try using lstat as some symbolic links on Windows
// throw 'permission denied' using 'stat' but don't throw
// using 'lstat'
try {
const result = await (0, pfs_1.lstat)((0, path_1.normalize)(current));
if (result.isFile() || result.isSymbolicLink()) {
return {
label,
path: current
};
}
}
catch (e) {
// noop
}
}
return validateShellPaths(label, potentialPaths);
}
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