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/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
'use strict';
Object.defineProperty(exports, "__esModule", { value: true });
exports.getVersion = void 0;
const path = require("path");
const fs = require("fs");
/**
* Returns the sha1 commit version of a repository or undefined in case of failure.
*/
function getVersion(repo) {
const git = path.join(repo, '.git');
const headPath = path.join(git, 'HEAD');
let head;
try {
head = fs.readFileSync(headPath, 'utf8').trim();
}
catch (e) {
return undefined;
}
if (/^[0-9a-f]{40}$/i.test(head)) {
return head;
}
const refMatch = /^ref: (.*)$/.exec(head);
if (!refMatch) {
return undefined;
}
const ref = refMatch[1];
const refPath = path.join(git, ref);
try {
return fs.readFileSync(refPath, 'utf8').trim();
}
catch (e) {
// noop
}
const packedRefsPath = path.join(git, 'packed-refs');
let refsRaw;
try {
refsRaw = fs.readFileSync(packedRefsPath, 'utf8').trim();
}
catch (e) {
return undefined;
}
const refsRegex = /^([0-9a-f]{40})\s+(.+)$/gm;
let refsMatch;
let refs = {};
while (refsMatch = refsRegex.exec(refsRaw)) {
refs[refsMatch[2]] = refsMatch[1];
}
return refs[ref];
}
exports.getVersion = getVersion;
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