101 lines
2.4 KiB
JavaScript
101 lines
2.4 KiB
JavaScript
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module.exports = version;
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module.exports.pin = pin;
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var fs = require('fs');
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var path = require('path');
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var exec = require('child_process').exec;
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var root = null;
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function pin() {
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return version().then(function (v) {
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version.pinned = v;
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});
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}
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function version(callback) {
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// first find the package.json as this will be our root
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var promise = findPackage(path.dirname(module.parent.filename))
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.then(function (dir) {
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// now try to load the package
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var v = require(path.resolve(dir, 'package.json')).version;
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if (v && v !== '0.0.0-development') {
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return v;
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}
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root = dir;
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// else we're in development, give the commit out
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// get the last commit and whether the working dir is dirty
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var promises = [
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branch().catch(function () { return 'master'; }),
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commit().catch(function () { return '<none>'; }),
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dirty().catch(function () { return 0; }),
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];
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// use the cached result as the export
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return Promise.all(promises).then(function (res) {
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var branch = res[0];
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var commit = res[1];
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var dirtyCount = parseInt(res[2], 10);
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var curr = branch + ': ' + commit;
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if (dirtyCount !== 0) {
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curr += ' (' + dirtyCount + ' dirty files)';
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}
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return curr;
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});
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}).catch(function (error) {
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console.log(error.stack);
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throw error;
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});
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if (callback) {
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promise.then(function (res) {
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callback(null, res);
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}, callback);
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}
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return promise;
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}
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function findPackage(dir) {
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if (dir === '/') {
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return Promise.reject(new Error('package not found'));
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}
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return new Promise(function (resolve) {
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fs.stat(path.resolve(dir, 'package.json'), function (error, exists) {
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if (error || !exists) {
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return resolve(findPackage(path.resolve(dir, '..')));
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}
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resolve(dir);
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});
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});
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}
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function command(cmd) {
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return new Promise(function (resolve, reject) {
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exec(cmd, { cwd: root }, function (err, stdout, stderr) {
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var error = stderr.trim();
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if (error) {
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return reject(new Error(error));
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}
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resolve(stdout.split('\n').join(''));
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});
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});
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}
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function commit() {
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return command('git rev-parse HEAD');
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}
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function branch() {
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return command('git rev-parse --abbrev-ref HEAD');
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}
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function dirty() {
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return command('expr $(git status --porcelain 2>/dev/null| ' +
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'egrep "^(M| M)" | wc -l)');
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}
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