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require 'English'
require 'rubygems/command'
require 'rubygems/version_option'
require 'rubygems/util'
class Gem::Commands::OpenCommand < Gem::Command
include Gem::VersionOption
def initialize
super 'open', 'Open gem sources in editor'
add_option('-e', '--editor EDITOR', String,
"Opens gem sources in EDITOR") do |editor, options|
options[:editor] = editor || get_env_editor
end
end
def arguments # :nodoc:
"GEMNAME name of gem to open in editor"
end
def defaults_str # :nodoc:
"-e #{get_env_editor}"
end
def description # :nodoc:
<<-EOF
The open command opens gem in editor and changes current path
to gem's source directory. Editor can be specified with -e option,
otherwise rubygems will look for editor in $EDITOR, $VISUAL and
$GEM_EDITOR variables.
EOF
end
def usage # :nodoc:
"#{program_name} GEMNAME [-e EDITOR]"
end
def get_env_editor
ENV['GEM_EDITOR'] ||
ENV['VISUAL'] ||
ENV['EDITOR'] ||
'vi'
end
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
def open_gem name
spec = spec_for name
return false unless spec
open_editor(spec.full_gem_path)
end
def open_editor path
system(*@editor.split(/\s+/) + [path])
end
def spec_for name
spec = Gem::Specification.find_all_by_name(name, @version).last
return spec if spec
say "Unable to find gem '#{name}'"
end
end