Class: Exctl::CLI

Inherits:
Object show all
Defined in:
lib/exctl/cli.rb

Instance Method Summary collapse

Constructor Details

#initialize(argv) ⇒ CLI

Returns a new instance of CLI.



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# File 'lib/exctl/cli.rb', line 3

def initialize(argv)
  @args = argv.clone
  @cmd = (@args.shift || 'help').strip.downcase
  @cmd = 'help'    if [nil,'-h','--help','h'].include?(@cmd)
  @cmd = 'version' if [nil,'-v','--version','v'].include?(@cmd)
  @cmd = ('cmd_' + @cmd.gsub(/^-+/,'').gsub('-','_')).to_sym
  @opts = {}
end

Instance Method Details

#avail_cmds ⇒ Object 



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# File 'lib/exctl/cli.rb', line 21

def avail_cmds; @avail_cmds ||= (self.methods-Object.methods).map(&:to_s).select{|m|m[0..3]=='cmd_'}.map{|m|m[4..-1]} end

#cmd_help ⇒ Object 



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# File 'lib/exctl/cli.rb', line 25

def cmd_help
  puts "exctl - Execution control; project command-line generator."
  puts "        v#{Exctl.version}\n\n"
  puts "USAGE: exctl (#{avail_cmds.join('|')}) [OPTIONS]\n\n"
  puts avail_cmds.map{|c| hc='doc_'+c; respond_to?(hc) ? '   ' + c.ljust(10) + ':  ' + send(hc) : nil}.compact.join("\n") + "\n\n"
end

#cmd_init ⇒ Object 



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# File 'lib/exctl/cli.rb', line 33

def cmd_init
  require 'erb'
  binname = @args.shift
  dir     = @args.shift || '.'
  if binname.nil?
    $stderr.puts "ERROR: project/binary name not specified."
    $stderr.puts "USAGE: exctl init BIN-NAME [DIR=.]"
    exit 3
  end

  b = binding

  libdest = Path["./.exctl"]
  $stderr.puts "  create dir:  #{libdest}/"
  libdest.dir!

  LIB_DIR['**/**',false].each do |f|
    relative = f.short(LIB_DIR)
    unless relative.to_s[0..0]=='.' || relative.to_s == 'exctl/cli.rb'
      dest = libdest ** relative
      if f.dir?
        $stderr.puts "  create dir:  #{dest}/"
        dest.dir!
      else
        $stderr.puts "  create file: #{dest}"
        system "cp", f, dest
      end
    end
  end

  $stderr.puts "  create file: #{binname}"
  dispatch_wrapper = ERB.new(File.read(TEMPLATE_DIR ** 'dispatch-wrapper.erb')).result(b)
  File.write(binname, dispatch_wrapper)
  $stderr.puts "  chmod  file: #{binname}"
  File.chmod(0774, binname)
end

#cmd_version ⇒ Object 



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# File 'lib/exctl/cli.rb', line 22

def cmd_version; puts Exctl.version end

#doc_help ⇒ Object 



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# File 'lib/exctl/cli.rb', line 24

def doc_help; 'Output this help.' end

#doc_init ⇒ Object 



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# File 'lib/exctl/cli.rb', line 32

def doc_init; 'BIN-NAME [DIR=.] - Creates/updates main ctl script and support files in the given DIR.' end

#run! ⇒ Object 



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# File 'lib/exctl/cli.rb', line 12

def run!()
  if self.respond_to?(@cmd) then self.send @cmd
  else
    $stderr.puts "ERROR: Command '#{@cmd}' not implemented."
    $stderr.puts "USAGE: exctl (#{avail_cmds.join('|')}) [OPTIONS]"
    exit 1
  end
end