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import * as os from "os";
import * as path from "path";
import * as fs from "fs";
import { memoize } from './util';
import { Config } from "./config";
export function isOdinInstalled(config: Config): boolean {
if (config.odinCommand) {
return true
}
return getPathForExecutable("odin") !== "";
}
export const getPathForExecutable = memoize(
// We apply caching to decrease file-system interactions
(executableName: "odin"): string => {
{
const envVar = process.env[executableName.toUpperCase()];
if (envVar) {
return envVar;
}
}
const path = lookupInPath(executableName);
if (path != undefined) {
return path;
}
return "";
}
);
function lookupInPath(exec: string): string | undefined {
const paths = process.env.PATH ?? "";
const candidates = paths.split(path.delimiter).flatMap(dirInPath => {
const candidate = path.join(dirInPath, exec);
return os.type() === "Windows_NT"
? [candidate, `${candidate}.exe`]
: [candidate];
});
for (let i = 0; i < candidates.length; i += 1) {
try {
const pathToOdin = fs.realpathSync(candidates[i]);
if (!!pathToOdin) {
return pathToOdin;
}
} catch (realpathError) {
console.debug("couldn't find odin at", candidates[i], "on account of", realpathError)
}
}
return undefined;
}
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