GitWrapper.prototype.exec = function()

in Extensions/ExternalTfs/Src/Tasks/DownloadArtifactsTfsGit/gitwrapper.js [53:113]
57 lines of code
14 McCabe index (conditional complexity)

    GitWrapper.prototype.exec = function (args, options) {
        var _this = this;
        options = options || {};
        var defer = Q.defer();
        var gitPath = shell.which('git', false);
        var rootDirectory = path.dirname(path.dirname(path.dirname(path.dirname(path.dirname(require.main.filename)))));
        var agentGit = path.join(rootDirectory, "externals", "git", "cmd", "git.exe");
        if(fs.existsSync(agentGit)){
            gitPath = agentGit;
        }
        if (!gitPath) {
            throw (new Error('git not found.  ensure installed and in the path'));
        }
        var git = new tl.ToolRunner(gitPath);
        git.silent = true;
        var creds = this.username + ':' + this.password;
        var escapedCreds = encodeURIComponent(this.username) + ':' + encodeURIComponent(this.password);
        git.on('debug', function (message) {
            if (options.debugOutput) {
                var repl = message.replace(creds, '...');
                repl = repl.replace(escapedCreds, '...');
                _this.emit('stdout', '[debug]' + repl);
            }
        });
        git.on('stdout', function (data) {
            _this.emit('stdout', data);
        });
        git.on('stderr', function (data) {
            _this.emit('stderr', data);
        });
        // TODO: if HTTP_PROXY is set (debugging) we can also supply http.proxy config
        // TODO: handle and test with spaces in the path
        if (false // not using credhelper for now, user/pass in url
            && options.creds) {
            // protect against private repo where no creds are supplied (external) - we don't want a prompt
            process.env[exports.envGitUsername] = this.username || 'none';
            process.env[exports.envGitPassword] = this.password || '';
            var credHelper = path.join(__dirname, 'credhelper.js');
            git.arg('-c');
            // TODO: test quoting and spaces
            git.arg('credential.helper=' + credHelper, true); // raw arg
        }
        args.map(function (arg) {
            git.arg(arg, true); // raw arg
        });
        options = options || {};
        var ops = {
            cwd: options.cwd || process.cwd(),
            env: options.env || process.env,
            silent: true,
            outStream: options.outStream || process.stdout,
            errStream: options.errStream || process.stderr,
            failOnStdErr: false,
            ignoreReturnCode: false
        };
        return git.exec(ops)
            .fin(function () {
            process.env[exports.envGitUsername] = null;
            process.env[exports.envGitPassword] = null;
        });
    };