Class: Gem::Commands::OpenCommand

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain: self, `::Gem::Command`
Instance Chain: self, `::Gem::VersionOption`, `::Gem::Command`, `::Gem::UserInteraction`, `::Gem::DefaultUserInteraction`, `::Gem::Text`
Inherits:	Gem::Command Object Gem::Command Gem::Commands::OpenCommand
Defined in:	lib/rubygems/commands/open_command.rb

Constant Summary

`::Gem::Command` - Inherited

HELP

Class Attribute Summary

`::Gem::Command` - Inherited

.build_args	Arguments used when building gems.
.build_args=, .extra_args, .extra_args=

Class Method Summary

.new ⇒ OpenCommand constructor

`::Gem::Command` - Inherited

.add_common_option,
.add_specific_extra_args	Add a list of extra arguments for the given command.
.common_options,
.new	Initializes a generic gem command named `command`.
.specific_extra_args	Return an array of extra arguments for the command.
.specific_extra_args_hash	Accessor for the specific extra args hash (self initializing).

Instance Attribute Summary

`::Gem::Command` - Inherited

#command	The name of the command.
#defaults	The default options for the command.
#options	The options for the command.
#program_name	The name of the command for command-line invocation.
#summary	A short description of the command.

`::Gem::DefaultUserInteraction` - Included

#ui	See DefaultUserInteraction.ui
#ui=	See DefaultUserInteraction.ui=

Instance Method Summary

#execute
#get_env_editor
#open_editor(path)
#open_gem(name)
#spec_for(name)
#arguments Internal use only
#defaults_str Internal use only
#description Internal use only
#usage Internal use only

`::Gem::VersionOption` - Included

#add_platform_option	Add the –platform option to the option parser.
#add_prerelease_option	Add the –prerelease option to the option parser.
#add_version_option	Add the –version option to the option parser.

`::Gem::Command` - Inherited

#add_extra_args	Adds extra args from ~/.gemrc.
#add_option	Add a command-line option and handler to the command.
#arguments	Override to provide details of the arguments a command takes.
#begins?	True if `long` begins with the characters from `short`.
#check_deprecated_options,
#defaults_str	Override to display the default values of the command options.
#deprecate_option	Mark a command-line option as deprecated, and optionally specify a deprecation horizon.
#description	Override to display a longer description of what this command does.
#execute	Override to provide command handling.
#get_all_gem_names	Get all gem names from the command line.
#get_all_gem_names_and_versions	Get all [gem, version] from the command line.
#get_one_gem_name	Get a single gem name from the command line.
#get_one_optional_argument	Get a single optional argument from the command line.
#handle_options	Handle the given list of arguments by parsing them and recording the results.
#handles?	True if the command handles the given argument list.
#invoke	Invoke the command with the given list of arguments.
#invoke_with_build_args	Invoke the command with the given list of normal arguments and additional build arguments.
#merge_options	Merge a set of command options with the set of default options (without modifying the default option hash).
#remove_option	Remove previously defined command-line argument `name`.
#show_help	Display the help message for the command.
#show_lookup_failure	Display to the user that a gem couldn’t be found and reasons why –.
#usage	Override to display the usage for an individual gem command.
#when_invoked	Call the given block when invoked.
#add_parser_run_info	Adds a section with `title` and `content` to the parser help view.
#configure_options,
#create_option_parser	Creates an option parser and fills it in with the help info for the command.
#option_is_deprecated?,
#parser	Create on demand parser.
#wrap	Wraps `text` to `width`
#add_parser_description, #add_parser_options, #add_parser_summary

`::Gem::UserInteraction` - Included

#alert	Displays an alert `statement`.
#alert_error	Displays an error `statement` to the error output location.
#alert_warning	Displays a warning `statement` to the warning output location.
#ask	Asks a `question` and returns the answer.
#ask_for_password	Asks for a password with a `prompt`
#ask_yes_no	Asks a yes or no `question`.
#choose_from_list	Asks the user to answer `question` with an answer from the given `list`.
#say	Displays the given `statement` on the standard output (or equivalent).
#terminate_interaction	Terminates the RubyGems process with the given `exit_code`
#verbose	Calls `say` with `msg` or the results of the block if really_verbose is true.

`::Gem::DefaultUserInteraction` - Included

#use_ui

See DefaultUserInteraction.use_ui

`::Gem::Text` - Included

#clean_text	Remove any non-printable characters and make the text suitable for printing.
#format_text	Wraps `text` to `wrap` characters and optionally indents by `indent` characters.
#levenshtein_distance	This code is based directly on the `::Gem::Text` gem implementation Returns a value representing the “cost” of transforming str1 into str2.
#truncate_text, #min3

Constructor Details

.new ⇒ `OpenCommand`

[ GitHub ]

# File 'lib/rubygems/commands/open_command.rb', line 11


def initialize
  super 'open', 'Open gem sources in editor'

  add_option('-e', '--editor COMMAND', String,
             "Prepends COMMAND to gem path. Could be used to specify editor.") do |command, options|
    options[:editor] = command || get_env_editor
  end
  add_option('-v', '--version VERSION', String,
             "Opens specific gem version") do |version|
    options[:version] = version
  end
end

Instance Method Details

#arguments

This method is for internal use only.

[ GitHub ]

# File 'lib/rubygems/commands/open_command.rb', line 24


def arguments # :nodoc:
  "GEMNAME     name of gem to open in editor"
end

#defaults_str

This method is for internal use only.

[ GitHub ]

# File 'lib/rubygems/commands/open_command.rb', line 28


def defaults_str # :nodoc:
  "-e #{get_env_editor}"
end

#description

This method is for internal use only.

[ GitHub ]

# File 'lib/rubygems/commands/open_command.rb', line 32


def description # :nodoc:
  <<-EOF
      The open command opens gem in editor and changes current path
      to gem's source directory.
      Editor command can be specified with -e option, otherwise rubygems
      will look for editor in $EDITOR, $VISUAL and $GEM_EDITOR variables.
  EOF
end

#execute

[ GitHub ]

# File 'lib/rubygems/commands/open_command.rb', line 52


def execute
  @version = options[:version] || Gem::Requirement.default
  @editor  = options[:editor] || get_env_editor

  found = open_gem(get_one_gem_name)

  terminate_interaction 1 unless found
end

#get_env_editor

[ GitHub ]

# File 'lib/rubygems/commands/open_command.rb', line 45


def get_env_editor
  ENV['GEM_EDITOR'] ||
    ENV['VISUAL'] ||
    ENV['EDITOR'] ||
    'vi'
end

#open_editor(path)

[ GitHub ]

# File 'lib/rubygems/commands/open_command.rb', line 74


def open_editor(path)
  Dir.chdir(path) do
    system(*@editor.split(/\s+/) + [path])
  end
end

#open_gem(name)

[ GitHub ]

# File 'lib/rubygems/commands/open_command.rb', line 61


def open_gem(name)
  spec = spec_for name

  return false unless spec

  if spec.default_gem?
    say "'#{name}' is a default gem and can't be opened."
    return false
  end

  open_editor(spec.full_gem_path)
end

#spec_for(name)

[ GitHub ]

# File 'lib/rubygems/commands/open_command.rb', line 80


def spec_for(name)
  spec = Gem::Specification.find_all_by_name(name, @version).first

  return spec if spec

  say "Unable to find gem '#{name}'"
end

#usage

This method is for internal use only.

[ GitHub ]

# File 'lib/rubygems/commands/open_command.rb', line 41


def usage # :nodoc:
  "#{program_name} GEMNAME [-e COMMAND]"
end

Class: Gem::Commands::OpenCommand

Constant Summary

::Gem::Command - Inherited

Class Attribute Summary

::Gem::Command - Inherited

Class Method Summary

::Gem::Command - Inherited

Instance Attribute Summary

::Gem::Command - Inherited

::Gem::DefaultUserInteraction - Included

Instance Method Summary

::Gem::VersionOption - Included

::Gem::Command - Inherited

::Gem::UserInteraction - Included

::Gem::DefaultUserInteraction - Included

::Gem::Text - Included

Constructor Details

.new ⇒ OpenCommand

Instance Method Details

#arguments

#defaults_str

#description

#execute

#get_env_editor

#open_editor(path)

#open_gem(name)

#spec_for(name)

#usage

`::Gem::Command` - Inherited

`::Gem::Command` - Inherited

`::Gem::Command` - Inherited

`::Gem::Command` - Inherited

`::Gem::DefaultUserInteraction` - Included

`::Gem::VersionOption` - Included

`::Gem::Command` - Inherited

`::Gem::UserInteraction` - Included

`::Gem::DefaultUserInteraction` - Included

`::Gem::Text` - Included

.new ⇒ `OpenCommand`