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Contents
module GLI
class CommandFinder
attr_accessor :options
DEFAULT_OPTIONS = {
:default_command => nil,
:autocomplete => true
}
def initialize(commands, options = {})
self.options = DEFAULT_OPTIONS.merge(options)
self.commands_with_aliases = expand_with_aliases(commands)
end
def find_command(name)
name = String(name || options[:default_command]).strip
raise UnknownCommand.new("No command name given nor default available") if name == ''
command_found = commands_with_aliases.fetch(name) do |command_to_match|
if options[:autocomplete]
found_match = find_command_by_partial_name(commands_with_aliases, command_to_match)
if found_match.kind_of? GLI::Command
if ENV["GLI_DEBUG"] == 'true'
$stderr.puts "Using '#{name}' as it's is short for #{found_match.name}."
$stderr.puts "Set autocomplete false for any command you don't want matched like this"
end
elsif found_match.kind_of?(Array) && !found_match.empty?
raise AmbiguousCommand.new("Ambiguous command '#{name}'. It matches #{found_match.sort.join(',')}")
end
found_match
end
end
raise UnknownCommand.new("Unknown command '#{name}'") if Array(command_found).empty?
command_found
end
private
attr_accessor :commands_with_aliases
def expand_with_aliases(commands)
expanded = {}
commands.each do |command_name, command|
expanded[command_name.to_s] = command
Array(command.aliases).each do |command_alias|
expanded[command_alias.to_s] = command
end
end
expanded
end
def find_command_by_partial_name(commands_with_aliases, command_to_match)
partial_matches = commands_with_aliases.keys.select { |command_name| command_name =~ /^#{command_to_match}/ }
return commands_with_aliases[partial_matches[0]] if partial_matches.size == 1
partial_matches
end
end
end
Version data entries
28 entries across 28 versions & 1 rubygems