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Git SemVer Compute

A simple script to use in your projects to calculcate a SemVer compliant verion identifier based on Git Tags and Commits.

Dependencies

  • git
  • bash
  • perl

How it Works

Rewinds the commits in the git tree to find one with a tag that is a valid Semantic Version. If none is found, the version 0.0.0 is used. If the tag is not found on the current commit then metadata will be added to the version indicating how many additional commits have been added since the tag along with a short commit hash. Additionally, if there are any uncommited changes in tracked files, the diff will be hashed and added to the metadata.

Tags which begin with a 'v' will have it removed when evaluating the tag as a version.

Usage

Add it to your project as a submodule:

git submodule add https://gitlab.com/CRThaze/git-semver-compute.git .version

Makefile

Easily make the current version available in your Makefile like so:

# Use the ?= to allow the version to be overriden easily by passing it in as
# an environment or build variable.
VERSION ?= $(shell ./.version/calculate-version.sh)

$(EXECUTABLE):
  go build -ldflags="-X main.Version=$(VERSION)" -o $(EXECUTABLE) .

Github Actions

on: [push]
jobs:
  build:
    steps:
      - name: Compute SemVer from Tags and Commits
        id: version
        run: echo "VERSION=$(${PWD}/.version/calculate-version.sh)" >> $GITHUB_OUTPUT
      - name: Create Archive
        run: tar -czf mycode-${{ steps.version.outputs.VERSION }}.tar.gz .