repo-v

This is a simple script that retrieves basic version information from the Git repository state using a synchronous call. This can be used to print version numbers for staging (non-live) purposes.

Keep in mind that synchronous calls will block the thread, meaning this should only be used in build systems and the likes.

There's a Python version of this script.

Installing

This package is available on npm:

npm install --save-dev repo-v

The --save-dev is used to save the package to your own packages.json file.

The source is available on Github.

Usage

Import the module and run getVersion() to get started:

var repoV = require('repo-v');
var version = repoV.getVersion();
console.log(version); // e.g. master-27-7072898

In this example, we're on the master branch, the 27th commit, identified by the short hash 7072898.

You can pass a template to getVersion() to get customized output. Use a string as argument containing the variables you want in between % signs. The default template is %branch-any%-%count%-%hash%. Any variable that is for some reason unavailable will be replaced with (unknown):

repoV.getVersion('%branch%');      // master
repoV.getVersion('%branch-any%');  // (depends on situation, see below)
repoV.getVersion('%branch-all%');  // HEAD, origin/master, master
repoV.getVersion('%count%');       // 27
repoV.getVersion('%count-hex%');   // 1b
repoV.getVersion('%hash%');        // 7072898
repoV.getVersion('%hash-full%');   // 7072898a6a04f867c7d7b8a8aa4249a8d408bc0a
repoV.getVersion('%foobar%');      // (unknown)

The %branch-any% variable is the most versatile. The following is returned depending on the situation:

• local branch: master
• remote tracking branch (in sync): master
• remote tracking branch (not in sync): remotes/origin/feature-foo
• tag: v1.2.3
• general detached head: v1.0.6-5-g2393761

If the git command itself is unusable for some reason, all variables will become (unknown).

Advanced

To change the Git command:

repoV.parser.gitCmd = '../../some/path/git';

To change the fallback string used for variables that couldn't be computed:

repoV.parser.unknownSegment = '(N/A)'; // default: '(unknown)'

You can also add your own Git commands to run using repoV.parser.mergeGitArgs(). See the included defaults.js file for an example of how to do this.

License

MIT licensed.