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import * as vscode from "vscode";
import * as os from "os";
import * as path from "path";
import * as fs from "fs";
import { execute, log, memoize } from './util';
export function isOdinInstalled(): boolean {
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 (var i = 0; i < candidates.length; i += 1) {
if (isFile(candidates[i])) {
return candidates[i];
}
}
return undefined;
}
function isFile(suspectPath: string): boolean {
// It is not mentionned in docs, but `statSync()` throws an error when
// the path doesn't exist
try {
return fs.statSync(suspectPath).isFile();
} catch {
return false;
}
}
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