Class: Hem::Cli

Inherits:
Object
  • Object
show all
Includes:
Logging
Defined in:
lib/hem/cli.rb

Overview

Main application class

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Logging

#logger, logger

Constructor Details

#initialize(opts = {}) ⇒ Cli

:help and :host_check are only used by tests. :slop is used to ensure low-level args parsed in bin/hem are propagated to the application

Parameters:

  • Initialization (Hash) —

    accepts several options in a hash:

    • :slop - Slop instance

    • :help - Help formatter instance

    • :host_check - Host check invocation class



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

def initialize opts = {}
  @opts = opts
  @slop = opts[:slop] || Slop.new
  @help_formatter = opts[:help] || Hem::HelpFormatter.new(@slop)
  @help_opts = {}
  @host_check = opts[:host_check] || Hem::Lib::HostCheck
  @pre_task_namespaces = ['shell-init', 'plugin']
end

Instance Attribute Details

#help_formatter ⇒ Object

Returns the value of attribute help_formatter.



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# File 'lib/hem/cli.rb', line 15

def help_formatter
  @help_formatter
end

#slop ⇒ Object

Returns the value of attribute slop.



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# File 'lib/hem/cli.rb', line 15

def slop
  @slop
end

Instance Method Details

#show_help(opts = {}) ⇒ Object

Display help and exit Options are mostly used for filtering

Parameters:

  • Options (Hash) —

    to apss to help formatter.



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# File 'lib/hem/cli.rb', line 76

def show_help(opts = {})
  Hem.ui.info @help_formatter.help(@help_opts.merge(opts))
  halt
end

#start(args = ARGV) ⇒ Object

entry point for application

Parameters:

  • Arguments (Array) —

    from ARGV. Defaults to ARGV



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# File 'lib/hem/cli.rb', line 35

def start args = ARGV
  load_user_config
  load_builtin_tasks
  load_hemfiles
  load_project_config

  define_global_opts @slop

  begin
    # Parse out global args first
    @slop.parse! args
    opts = @slop.to_hash

    @help_opts[:all] = opts[:all]

    # Necessary to make command level help work
    args.push "--help" if @slop.help? || args.empty?

    include_pre_tasks
    remaining = @slop.parse! args.dup
    remaining.push "--help" if @slop.help?

    if remaining == args
      include_post_tasks opts

      remaining = @slop.parse! remaining
    end

    raise Hem::InvalidCommandOrOpt.new remaining.join(" ") if remaining.size > 0

    show_help if @slop.help?
  rescue Halt
    # NOP
  end

  return 0
end