Class: MetaCon::Command

Inherits:
Object
  • Object
show all
Includes:
CLIHelpers
Defined in:
lib/metacon/command.rb

Constant Summary collapse

CMD_ALIASES = 
{
  :init =>       :init,
  :initialize => :init,

  :st =>         :stat,
  :stat =>       :stat,
  :status =>     :stat,
  :statistics => :stat,

  :c =>          :curr,
  :curr =>       :curr,
  :current =>    :curr,

  :role =>       :role,

  :rtc =>        :rtc,
  :rctx =>       :rtc,
  :runtime =>    :rtc,
  :runtimecontext => :rtc,

  :os =>         :os,
  :operatingsystem => :os,

  :host =>       :host,
  :machine =>    :host,
  :computer =>   :host,
  :server =>     :host,

  :conf =>       :conf,
  :config =>     :conf,
  :configuration=> :conf,

  :prompt =>     :ps1,
  :ps1 =>        :ps1
}
COMMANDS = 
[[:init, {:args => ['[DIRECTORY]'],
 :desc => 'Init metacon project dir, default ./, create if necessary',
 :handler => MetaCon::Init}],
                [:stat, {:args => ['[STAT-NAME]'],
 :desc => 'Status of / information about the current context',
 :handler => MetaCon::Stat}],
                [:curr, {:args => ['[KIND]'],
 :desc => 'Display current metacontext (or specified part)',
 :handler => MetaCon::Stat}],
                [:role, {:args => ['[SWITCH-TO]'],
 :desc => 'Show current role in list, or switch to new.',
 :handler => MetaCon::Switch}],
                [:rtc,  {:args => ['[SWITCH-TO]'],
 :desc => 'Show current runtime-context in list, or switch to new.',
 :handler => MetaCon::Switch}],
                [:os,   {:args => ['[SWITCH-TO]'],
 :desc => 'Show current OS in list, or try to switch to new.',
 :handler => MetaCon::Switch}],
                [:host, {:args => ['[SWITCH-TO]'],
:desc => 'Show current host/machine in list, or try to switch to new.',
:handler => MetaCon::Switch}],
                [:conf, {:args => ['[FAMILY]'],
:desc => 'Output the currently applicable configuration',
:handler => MetaCon::Command}],
                [:ps1,  {:args => [],
:desc => 'Emit value appropriate for ps1 prompt',
:handler => MetaCon::Command}] ]

Constants included from CLIHelpers

MetaCon::CLIHelpers::ANSI, MetaCon::CLIHelpers::CONTEXT_OS, MetaCon::CLIHelpers::ESCS

Class Method Summary collapse

Methods included from CLIHelpers

#best_profile_file, #cfail, #chd, #check_tool, #color_puts, #command_exists?, #cstr2, #cwarn, #darwin?, #fj, #included, #linux?, #mac?, #result, #shellescape, #status

Class Method Details

.handle(cmd, clo, opts) ⇒ Object 



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# File 'lib/metacon/command.rb', line 134

def self.handle(cmd,clo,opts)
  if cmd == :conf
    conf = $proj.conf
    conf = Hash[opts.map{|fam| [fam, conf[fam]]}] if opts.size > 0
    puts conf.to_yaml
  elsif cmd == :ps1
    puts ps1
  end
end

.ps1(color = true) ⇒ Object 



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# File 'lib/metacon/command.rb', line 144

def self.ps1(color=true)
  return `echo "$ORIG_PS1"` unless $proj.valid
  fc = $proj.full_context

  #---- project-name
  parts = [fc[:name]]

  #---- git-branch
  style = []
  style << 'underline' if fc[:git_branch] == 'master'
  style << ({:diverged => 'fg_blue',
                :behind   => 'fg_yellow',
                :ahead    => 'fg_green'}[fc[:git_upstream]] || 'fg_default')
  gitbr =  "<|reset|#{style.join('|')}>#{fc[:git_branch]}<|reset|>"
  # yes, these are actually orthoganal, but this precedence makes more
  # sense for the UI.
  if fc[:git_has_unstaged]   then gitbr << '<|bright>*<|reset>'
  elsif fc[:git_has_staged]  then gitbr << '<|bright>+<|reset>'
  elsif fc[:git_has_stashed] then gitbr << '<|bright>$<|reset>' end
  parts << gitbr

  #---- runtime-context
  r = fc[:runtime_context]
  style = []
  style << 'fg_red' if r[/^prod|hot/i]
  style << 'bright' if r[/^prod|hot/i]
  style << 'fg_green' if r[/^dev/i]
  style << 'fg_yellow' if r[/test/i]
  style << 'fg_cyan' if r[/staging|deploy/i]
  parts << "<|reset|#{style.join('|')}>#{r}<|reset|>"

  #---- the rest
  parts << (fc[:role] == 'main' ? '~' : "<|reset>#{fc[:role]}")
  parts << (fc[:os] == $proj.this_os ?  '~' : "<|reset>#{fc[:os]}")
  parts << (fc[:machine] == $proj.this_host ?  '~' : "<|reset>#{fc[:machine]}")


  line = "<|reset|bright|fg_black>(<|reset|underline>#{parts.join('<|reset|bright|fg_black>/')}<|bright|fg_black>)<|reset>/#{fc[:pwd_from_root]}<|bright|fg_black>-><|reset> "

  return MetaCon::CLIHelpers.cstr2(line)
end

.run ⇒ Object 



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# File 'lib/metacon/command.rb', line 76

def self.run
  banner = "metacon\n"+
           "MetaController version #{MetaCon::VERSION}\n" +
           "Usage: metacon [COMMAND] [OPTIONS]"
  options = {}
  opts = OptionParser.new do |o|
    o.version = MetaCon.version
    o.banner = banner
    o.separator ''
    o.on('-q', '--[no-]quiet', 'Run command quietly'){|v| options[:verbose]= !v}

    o.on('-h','--help', 'Show this message'){puts o; exit 0}
    o.on('--version', 'Show version and exit'){puts MetaCon::VERSION; exit 0}

    o.on('-s', '--[no-]shell-output', 'Outputs commands for evaluating in the current shell') do |v|
      options[:shell]=v
    end

    o.separator ''
    o.separator 'commands          '
    o.separator '------------------'
    cmds = COMMANDS.map do |c,p|
      args = p[:args].join(' ')
      "#{(c.to_s + ' ' + args).ljust(36)} #{p[:desc]}"
    end
    o.separator cmds
  end
  rest = opts.parse(ARGV)
  options[:shell] = false if options[:shell].nil?
  options[:verbose] = true if options[:verbose].nil?

  if rest.size == 0
    puts(opts)
    exit
  end

  command_key = rest.shift.strip.downcase
  command = CMD_ALIASES[command_key.to_sym]
  if command.nil?
    cfail "Command #{command_key} not found. Use -h to see the list of commands."
    exit 2
  end

  $cli = HighLine.new
  $cli.extend(MetaCon::CLIHelpers)
  $proj = nil
  unless [:init].include?(command)
    $proj = MetaCon::Project.new('./', options[:verbose])
    unless $proj.valid || (command == :ps1)
      $cli.cfail 'Not a metacon project. Use `metacon init`'
      exit 5
    end
  end

  command_info = COMMANDS.select{|k,v| k == command}[0][1]
  command_info[:handler].send :handle, command, options, rest
end