Class: Gem::Commands::WhichCommand
Relationships & Source Files | |
Super Chains via Extension / Inclusion / Inheritance | |
Class Chain:
self,
::Gem::Command
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Instance Chain:
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Inherits: |
Gem::Command
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Defined in: | lib/rubygems/commands/which_command.rb |
Class Attribute Summary
::Gem::Command - Inherited
.build_args | Arguments used when building gems. |
.build_args=, .extra_args, .extra_args= |
Class Method Summary
- .new ⇒ WhichCommand 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 |
.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
#defaults | The default options for the command. |
#program_name | The name of the command for command-line invocation. |
#summary | A short description of the command. |
#command | The name of the command. |
#options | The options for the command. |
::Gem::DefaultUserInteraction - Included
Instance Method Summary
::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 |
#defaults_str | Override to display the default values of the command options. |
#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 |
#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 |
#configure_options, | |
#create_option_parser | Creates an option parser and fills it in with the help info for the command. |
#parser | Create on demand parser. |
#wrap | Wraps |
::Gem::UserInteraction - Included
#alert | Displays an alert |
#alert_error | Displays an error |
#alert_warning | Displays a warning |
#ask | Asks a |
#ask_for_password | Asks for a password with a |
#ask_yes_no | Asks a yes or no |
#choose_from_list | Asks the user to answer |
#say | Displays the given |
#terminate_interaction | Terminates the RubyGems process with the given |
#verbose | Calls |
::Gem::DefaultUserInteraction - Included
Constructor Details
.new ⇒ WhichCommand
# File 'lib/rubygems/commands/which_command.rb', line 5
def initialize super 'which', 'Find the location of a library file you can require', :search_gems_first => false, :show_all => false add_option '-a', '--[no-]all', 'show all matching files' do |show_all, | [:show_all] = show_all end add_option '-g', '--[no-]gems-first', 'search gems before non-gems' do |gems_first, | [:search_gems_first] = gems_first end end
Instance Method Details
#execute
[ GitHub ]# File 'lib/rubygems/commands/which_command.rb', line 38
def execute found = true [:args].each do |arg| arg = arg.sub(/#{Regexp.union(*Gem.suffixes)}$/, '') dirs = $LOAD_PATH spec = Gem::Specification.find_by_path arg if spec then if [:search_gems_first] then dirs = spec.full_require_paths + $LOAD_PATH else dirs = $LOAD_PATH + spec.full_require_paths end end # TODO: this is totally redundant and stupid paths = find_paths arg, dirs if paths.empty? then alert_error "Can't find ruby library file or shared library #{arg}" found &&= false else say paths end end terminate_interaction 1 unless found end
#find_paths(package_name, dirs)
[ GitHub ]# File 'lib/rubygems/commands/which_command.rb', line 70
def find_paths(package_name, dirs) result = [] dirs.each do |dir| Gem.suffixes.each do |ext| full_path = File.join dir, "#{package_name}#{ext}" if File.exist? full_path and not File.directory? full_path then result << full_path return result unless [:show_all] end end end result end