Class: CLI

Inherits:
Object
  • Object
show all
Defined in:
lib/qt-rebuild/cli.rb

Overview

Synopsis

The Command Line Interface

Class Method Summary collapse

Class Method Details

.execute(stdout, arguments = []) ⇒ Object

Synopsis

Here’s the main execution loop



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# File 'lib/qt-rebuild/cli.rb', line 9

def self.execute(stdout, arguments=[])
  exit_code = ExitCode::OK

  begin
    # parse the command line
    options = setup_parser()
    od = options.parse(arguments)
    
    skip_execution = false
    %w(--help --version).each {|flag| skip_execution = true if od[flag] }
    unless skip_execution
      # create and execute class instance here
      app = QtRebuild.new()
      app.scan
      if od["--set"]
        puts app.to_set.join("\n")
      elsif !od["--quiet"]
        puts app.to_s
      end
      app.emerge(od["--pretend"], od['--nocolor'])
    end
  rescue ArgumentError => argErr
    STDERR.puts argErr.to_s
    STDERR.puts options.to_s
    STDERR.puts argErr.backtrace.join("\n")
    exit_code = ExitCode::CRITICAL
  rescue Exception => eMsg
    STDERR.puts eMsg.to_s
    STDERR.puts options.to_s
    STDERR.puts eMsg.backtrace.join("\n")
    exit_code = ExitCode::CRITICAL
  end
  exit_code
end

.setup_parser ⇒ Object

Synopsis

Setup the command line option parser

Returns

OptionParser instances



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# File 'lib/qt-rebuild/cli.rb', line 47

def self.setup_parser()
  options = CommandLine::OptionParser.new()

  # flag options
  [
    {
      :names           => %w(--version -v),
      :opt_found       => lambda {puts QtRebuild.version; true },
      :opt_description => "This version of qt-rebuild"
    },
    {
      :names           => %w(--help -h),
      :opt_found       => lambda {puts options.to_s; true},
      :opt_description => "Print usage."
    },
    {
      :names           => %w(--quiet -q),
      :opt_description => 'Display error messages only.'
    },
    {
      :names           => %w(--debug -d),
      :opt_description => 'Display debug messages.'
    },
    {
      :names           => %w(--set -s),
      :opt_description => "Output in portage's set format."
    },
    {
      :names           => %w(--nocolor -C),
      :opt_description => "Turn off colored output. (This option is also passed to portage.)"
    },
    {
      :names           => %w(--pretend -p),
      :opt_description => "Do a dry-run."
    },
  ].each { |opt| options << CommandLine::Option.new(:flag, opt) }

  options
end