57 lines
1.2 KiB
JavaScript
57 lines
1.2 KiB
JavaScript
/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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var path = require('path');
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var fs = require('fs');
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exports.getVersion = function (repo) {
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var git = path.join(repo, '.git');
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var headPath = path.join(git, 'HEAD');
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var head;
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try {
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head = fs.readFileSync(headPath, 'utf8').trim();
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} catch (e) {
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return void 0;
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}
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if (/^[0-9a-f]{40}$/i.test(head)) {
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return head;
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}
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var refMatch = /^ref: (.*)$/.exec(head);
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if (!refMatch) {
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return void 0;
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}
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var ref = refMatch[1];
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var refPath = path.join(git, ref);
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try {
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return fs.readFileSync(refPath, 'utf8').trim();
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} catch (e) {
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// noop
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}
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var packedRefsPath = path.join(git, 'packed-refs');
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var refsRaw;
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try {
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refsRaw = fs.readFileSync(packedRefsPath, 'utf8').trim();
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} catch (e) {
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return void 0;
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}
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var refsRegex = /^([0-9a-f]{40})\s+(.+)$/gm;
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var refsMatch;
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var refs = {};
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while (refsMatch = refsRegex.exec(refsRaw)) {
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refs[refsMatch[2]] = refsMatch[1];
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}
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return refs[ref];
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}; |