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Class: Gem::Commands::OpenCommand

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
Instance Chain:
Inherits: Gem::Command
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

::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.

#deprecated?,
#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

Instance Method Summary

::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.

#get_platform_from_requirements

Extract platform given on the command line.

::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

::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

.newOpenCommand

[ GitHub ]

  
# File 'lib/rubygems/commands/open_command.rb', line 8

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 21

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 25

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 29

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 49

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 42

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 71

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 58

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 77

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 38

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