Quick-and-dirty utility to: 1) initialize a new git repo in the current directory (git init) 2) add all existing files, and: (git add .) 3) make an initial commit with message 'Initial commit' (git commit -m 'Initial commit') It won't run the commands if a git repo already exists. It checks the current directory only (does not accept a dir as an…

git-start.rb

#! /usr/bin/env ruby
#
# git-start.rb
#
# Quick-and-dirty utility to initialize a new git repo in the current
# directory, add all existing files and make an initial commit with message
# 'Initial commit'.
#
# Saves a few seconds here and there.
#
# Does not check for nested git repos/submodules.

require 'open3'

def git_init
  cmd = "git init"
  stdin, stdout, stderr = Open3.popen3(cmd)

  this_dir = Dir.pwd
  git_dir  = this_dir + '/.git/'
  git_init_msg = 'Initialized empty Git repository in ' + git_dir +
    "\n"

  out = stdout.readlines
  err = stderr.readlines
  unless out == [git_init_msg] &&
     err.size == 0
    raise "Error initializing git dir."
  end
end

def git_check_clean
  cmd = "git status"
  stdin, stdout, stderr = Open3.popen3(cmd)

  no_git_repo_msg =
  %{fatal: Not a git repository (or any of the parent directories): .git\n}

  unless stdout.readlines.size == 0 &&
    stderr.readlines == [no_git_repo_msg]
    raise "A git repo already exists."
  end
end

def git_add_all
  cmd = "git add ."
  stdin, stdout, stderr = Open3.popen3(cmd)
  out = stdout.readlines
  err = stderr.readlines
  unless out.size == 0 && err.size == 0
    raise "Error adding files to git index."
  end
end

def git_initial_commit
  cmd = "git commit -m 'Initial commit'"
  stdin, stdout, stderr = Open3.popen3(cmd)
  out = stdout.readlines
  err = stderr.readlines
  unless out.size != 0 && err.size == 0
    raise "Error with git commit."
  end
end

begin
  git_check_clean()
  git_init()
  git_add_all()
  git_initial_commit()
rescue Exception => ex
  $stderr.puts ex.message
end