Module: GemTools

Extended by:
GemTools
Included in:
GemTools
Defined in:
lib/gem_tools/gem_tools.rb

Instance Method Summary collapse

Instance Method Details

#check_gem(command, name, version = '') ⇒ Object 



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# File 'lib/gem_tools/gem_tools.rb', line 82

def check_gem(command, name, version='')
  spec = YAML.load(`#{command} spec #{name} 2> /dev/null`)
  loaded = false
  begin
    loaded = require_gem name, version
    version = spec.version.version
  rescue Exception
  end
  [spec, loaded, version]
end

#commands ⇒ Object 



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# File 'lib/gem_tools/gem_tools.rb', line 47

def commands
  config = load_config
  gems = config['gems']
  commands = []

  unless gems.nil?
    docs = ''
    unless OPTIONS.has_key?(:docs)
      docs << '--no-rdoc ' unless (`rdoc -v`).nil?
      docs << '--no-ri ' unless (`ri -v`).nil?
    end

    gem_command = config['gem_command'] || 'gem'
    gem_dash_y = "1.0" > Gem::RubyGemsVersion ? '-y' : ''

    gems.each do |gem|
      spec, loaded, version = check_gem(gem_command, gem['name'], gem['version'])
      # if forced
      # or the spec version doesn't match the required version
      # or require_gem returns false
      #    (return false also happens if the gem has already been loaded)
      if OPTIONS.has_key?(:force) || !spec || (! loaded && version != gem['version'])
        gem_config = gem['config'] ? " -- #{gem['config']}" : ''
        source = gem['source'] || config['source'] || nil
        source = "--source #{source}" if source
        cmd = "#{gem_command} install #{gem['path'] || gem['name']} -v '#{gem['version']}' #{gem_dash_y} #{source} #{docs} #{gem_config}"
        commands << cmd
      else
        puts "#{gem['name']} #{gem['version']} already installed"
      end
    end
  end
  commands
end

#dryrun ⇒ Object 



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# File 'lib/gem_tools/gem_tools.rb', line 43

def dryrun
  puts "\n#{commands.join("\n")}\n\n"
end

#find_config ⇒ Object 



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# File 'lib/gem_tools/gem_tools.rb', line 120

def find_config
  dirs = []
  if Object.const_defined?('RAILS_ROOT')
    dirs << RAILS_ROOT
    dirs << File.join(RAILS_ROOT, 'config')
  end
  dirs << %w{. config}
  dirs.flatten!
  
  dirs.each do |dir|
    config_file = File.join(dir, 'gems.yml')
    return config_file if File.exist?(config_file)
  end
  nil
end

#help ⇒ Object 



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# File 'lib/gem_tools/gem_tools.rb', line 24

def help
  puts OPTIONS
end

#install ⇒ Object 



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# File 'lib/gem_tools/gem_tools.rb', line 28

def install
  require 'rubygems'
  if RUBY_PLATFORM =~ /MSWIN/
    puts "gemtools install doesn't currently work in windows. The commands you need to install the gems will be printed out for you.\n"
    dryrun
    return
  else
    commands.each do |command|
      ret = system command
      # something bad happened, pass on the message
      p $? unless ret
    end
  end
end

#load_config ⇒ Object 



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# File 'lib/gem_tools/gem_tools.rb', line 111

def load_config
  config_file = find_config
  unless config_file
    puts 'Could not find a gems.yml, checked . and ./config'
    exit 1
  end
  Yamler.load(config_file)
end

#load_gems ⇒ Object 



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# File 'lib/gem_tools/gem_tools.rb', line 93

def load_gems
  config = load_config
  unless config['gems'].nil?
    gems = config['gems'].reject {|gem_info| ! gem_info['load'] }
    gems.each do |gem_info|
      if defined?(gem)
        gem gem_info['name'], gem_info['version']
      else
        require_gem gem_info['name'], gem_info['version']
      end
      reqs = [(gem_info['require_name'] || gem_info['name'])].flatten
      reqs.each do |req|
        require req
      end
    end
  end
end

#run(cmd) ⇒ Object 



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# File 'lib/gem_tools/gem_tools.rb', line 8

def run(cmd)
  send(cmd.to_sym)# rescue help
end

#setup ⇒ Object 



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# File 'lib/gem_tools/gem_tools.rb', line 12

def setup
  require 'fileutils'
  dest_file = File.join(ARGV[1], '/config/gems.yml')
  if File.exist?(dest_file) && ! OPTIONS.has_key?(:force)
    puts "#{dest_file} already exists.\n\ngemtools install #{ARGV[1]} --force\n\nto overwrite"
    exit 1
  else
    FileUtils.copy(File.join(File.dirname(__FILE__), '../config/gems.template.yml'), dest_file)
    puts "#{dest_file} created"
  end
end