git-rev-label

Gives information about Git repository revision in format like 'master-c73-gabc6bec'. Can fill template string or file with environment variables and information from Git. Useful to provide information about version of the program: branch, tag, commit hash, commits count, dirty status, date and time. One of the most useful things is count of commits, not taking into account merged branches - only first parent.

Usage

$ git rev-label
master-c73-gbbb6bec

Part 2 – Walk over git commits and show how rev-label detects branch, tag, detached and dirty states

Part 3 – List available variables and fill template file

$ git rev-label --help
Gives information about Git repository revision in format like 'master-c73-gbbb6bec'.
Can fill template string or file with environment variables and information from Git. 
Useful to provide information about version of the program: branch, tag, commit hash, 
commits count, dirty status, date and time. One of the most useful things is count of 
commits, not taking into account merged branches - only first parent.

USAGE:
   git rev-label
   git rev-label [--help|-h|-?]
   git rev-label [--version|-V]
   git rev-label '$refname-c\$count-g\$short\$_dirty'
   git rev-label --format="`cat build_info.template.h`"
   git rev-label --format-file=build_info.template.h
   git rev-label --variables [--export]
   eval $( git rev-label --variables [--export] )

COMPLEX USE CASE:
 * Fill `build_info.template.h` with branch, tag, commit hash, commits count, dirty status. 
   Than include result header to access build information from code. 
   See https://gitlab.com/kyb/git-rev-label/blob/master/build_info.template.h and
   https://gitlab.com/kyb/git-rev-label/blob/master/create-build-info.sh

INSTALLATION:
   ./git-rev-label --install|--install-link [--install-dir=/usr/local/bin]

UPDATE:
   git rev-label --update

More info at https://gitlab.com/kyb/git-rev-label

Run witout install

• npx git-rev-label

• docker run -it ikyb/git-rev-label

  If wanna run always in container

  alias git-rev-label='docker run -it --rm -v"$PWD":"$PWD" -w"$PWD" ikyb/git-rev-label git-rev-label '

  or create executable file git-rev-label in PATH with the same contents.

Install

Raw without package manager

curl -fsSL 'https://gitlab.com/kyb/git-rev-label/raw/artifacts/master/git-rev-label' | sudo bash -s -- --install

Warning: sudo under hood.

Manual to $HOME/bin without sudo:

curl -fsSL 'https://gitlab.com/kyb/git-rev-label/raw/artifacts/master/git-rev-label' | bash -s -- --install=$HOME/bin

Then make sure $HOME/bin is in $PATH:

• bash

  [[ ":$PATH:" != *":$HOME/bin:"* ]] && PATH="$HOME/bin:$PATH"

• fish

  set --export --universal fish_user_paths ~/bin $fish_user_paths

with NPM

npm install --global git-rev-label

with Homebrew OUTDATED

brew tap ivakyb/git-rev-label
brew install git-rev-label

Examples

Take a look into build_info-header. It shows how git-rev-label is used to generate C header file build_info.h with information about version extracted from Git.

build-info-header (legacy)

This was the begining.

bash script extracts information from Git and creates C header files with defined symbols to information about current build.

Use cases

This is super useful when you want store some information about current build in compiled binary.

Shell script creates build_info.h C header file with information about repository: branch, tags, timestamps, etc. Include this header to access build information from code.

ToDo

• move to dedicated project group gitlab.com/git-rev-label
• move artifacts/* branches family to dedicated repo gitlab.com/git-rev-label/releases
• use also releases page of main development repo, keep it in sync with releases-repo