README

Что бы заставить zsp работать нужно добавить папку с ним в PATH (например так export PATH="/Users/koss/Projects/zsp/bin:$PATH") и сделать его исполняемым. Также надо создать папку ~/.zsp в которой будут лежать файлы проектов (пример ниже ↓).

Еще неплохо бы прописать такую строчку в .zshrc:

source "$HOME/.zsp/loader.zsh"

_zsp

#compdef zsp

_get_profiles() {
  profiles=(`zsp list --no-noise`)
}

local -a _1st_arguments
_1st_arguments=(
  'use:use profile'
  'list:show list of profiles'
)

local expl
local -a profiles

_arguments \
  '(-v --version)'{-v,--version}'[version information]' \
  '(-h --help)'{-h,--help}'[help]' \
  '*:: :->subcmds' && return 0

if (( CURRENT == 1 )); then
  _describe -t commands "gem subcommand" _1st_arguments
  return
fi

case "$words[1]" in
  use)
    _get_profiles
    _wanted profiles expl 'all profiles' compadd -a profiles ;;
esac

sample_project

@ruby   = 'ruby-head'
@gemset = 'rails3beta3'
@cd     = '~/Projects/sparta/'

zsp

#!/usr/bin/env ruby

ZSP_HOME      = '~/.zsp'
ZSP_HOME_PATH = File.expand_path('~/.zsp')

# Puts message
def say_it message, error = false
  message_color = error ? 31 : 36

  to_say = "\033[#{message_color}m>>#{error ? '' : "\033[0m"}"

  to_say << ' ' << "B000000M!" if error
  to_say << ' ' << message

  puts to_say
end

# Wrap profile name to gren color and quotes
def wrap_profile_name profile_name
  "\033[32m'#{profile_name}'\033[0m"
end

# Get profiles list
def profiles_list
  begin
    dir = Dir.new ZSP_HOME_PATH
  rescue Errno::ENOENT
    say_it "'#{ZSP_HOME}' folder is not exist. You should create it first", true
    exit
  end

  profiles = []

  dir.each do |file|
    profiles << file unless %w[. .. loader.zsh .DS_Store].include? file
  end

  profiles
end

if ARGV.size == 0 or ['-h', '--help'].include? ARGV[0] or (ARGV[0] == 'use' and ARGV.size != 2)
puts <<EOF
#####################################################################
#                                                                   #
#   ====  == ===                                                    #
#     =  =   =  =                                                   #
#    =     = ===                                                    #
#   ==== ==  =    — zsh profile manager                             #
#                                                                   #
# Usage:                                                            #
#                                                                   #
#   zsp [Options] Action                                            #
#                                                                   #
# Actions:                                                          #
#                                                                   #
#   list               - show profiles list                         #
#   use profile_name   - use zsh profile with name profile_name     #
#                       you also can type 'zsp profile_name'        #
#                                                                   #
# Options:                                                          #
#                                                                   #
#   -v|--version - zsp version                                      #
#   -h|--help    - show this crap                                   #
#                                                                   #
#                             by Aleksandr Koss (http://nocorp.me)  #
#                                                                   #
#####################################################################
EOF
elsif ['-v', '--version'].include? ARGV[0]
  say_it 0.1.to_s
elsif ARGV[0] == 'list'
  if ARGV.include? '--no-noise'
    profiles_list.each { |profile| puts profile }
  else
    profiles_list.each { |profile| say_it profile }
  end
else
  profile_name = ARGV[0] == 'use' ? ARGV[1] : ARGV[0]

  say_it "Activating profile #{wrap_profile_name profile_name}"

  if profiles_list.include? profile_name
    begin
      load File.expand_path("~/.zsp/#{profile_name}"), false
    rescue LoadError
      say_it 'Error while load profile', true
      exit
    end

    unless [@ruby, @cd].include? nil
      loader = File.open File.expand_path('~/.zsp/loader.zsh'), 'w'

      rvm_options = [@ruby]
      rvm_options << @gemset unless @gemset.nil?

      `rvm --default #{rvm_options.join '@'} > /dev/null`

      loader.puts "export ZSP_PROFILE=#{profile_name}"
      loader.puts "cd #{File.expand_path(@cd)}"
      loader.close

      say_it ''
      say_it "w000t! Profile #{wrap_profile_name profile_name} is activated!"
      say_it 'Now you should reload all terminals. Bye!'
    else
      say_it 'Your profile sucks! But you can create new...', true
    end
  else
    say_it "Profile '#{profile_name}' does not exist!", true
  end
end

105 > [...] is not exist [...]
should be
[...] does not exist [...]
In passive voice it should be said like: 'is not existed', but it's not applicable for the verb 'to exist'.