Class: Cinatra
- Inherits:
-
Object
- Object
- Cinatra
- Includes:
- Singleton
- Defined in:
- lib/cinatra.rb,
lib/cinatra/command.rb
Defined Under Namespace
Classes: Command
Instance Attribute Summary collapse
-
#exiting ⇒ Object
Returns the value of attribute exiting.
Instance Method Summary collapse
- #add_command(name, desc = '', &block) ⇒ Object
- #call(line) ⇒ Object
- #command_names ⇒ Object
- #commands ⇒ Object
- #completion(text) ⇒ Object
- #delete_command(name) ⇒ Object
- #exit ⇒ Object
- #get_command(name) ⇒ Object
- #handle_error(e) ⇒ Object
-
#initialize ⇒ Cinatra
constructor
A new instance of Cinatra.
- #is_command_match_to_line?(command, line) ⇒ Boolean
- #normalize_as_command_name(name) ⇒ Object
- #resolve_command_name_and_arg(line) ⇒ Object
- #start ⇒ Object
Constructor Details
#initialize ⇒ Cinatra
Returns a new instance of Cinatra.
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# File 'lib/cinatra.rb', line 10 def initialize Readline.basic_word_break_characters= "\t\n\"\\'`><=;|&{(" Readline.completion_proc = lambda {|text| completion(text) } trap("INT") { exit } end |
Instance Attribute Details
#exiting ⇒ Object
Returns the value of attribute exiting.
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# File 'lib/cinatra.rb', line 8 def exiting @exiting end |
Instance Method Details
#add_command(name, desc = '', &block) ⇒ Object
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# File 'lib/cinatra.rb', line 16 def add_command(name, desc = '', &block) name = normalize_as_command_name(name) if commands.key?(name) puts "Warning: The command '#{name}' will be overridden." end commands[name] = Command.new(name, desc, &block) rescue Exception => e handle_error(e) end |
#call(line) ⇒ Object
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# File 'lib/cinatra.rb', line 42 def call(line) line = line.strip return if line.empty? command_name, command_arg = resolve_command_name_and_arg(line) unless command_name puts "Error: Command not found: #{line}" else get_command(command_name).call(command_arg) end rescue Exception => e handle_error(e) end |
#command_names ⇒ Object
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# File 'lib/cinatra.rb', line 38 def command_names commands.keys.map {|i| i.to_s } end |
#commands ⇒ Object
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# File 'lib/cinatra.rb', line 34 def commands @commands ||= {} end |
#completion(text) ⇒ Object
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# File 'lib/cinatra.rb', line 55 def completion(text) commands.keys.map {|i| i.to_s }.grep(/^#{Regexp.quote(text)}/) end |
#delete_command(name) ⇒ Object
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# File 'lib/cinatra.rb', line 26 def delete_command(name) commands.delete(normalize_as_command_name(name)) end |
#exit ⇒ Object
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# File 'lib/cinatra.rb', line 65 def exit self.exiting = true end |
#get_command(name) ⇒ Object
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# File 'lib/cinatra.rb', line 30 def get_command(name) commands[name.to_sym] end |
#handle_error(e) ⇒ Object
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# File 'lib/cinatra.rb', line 69 def handle_error(e) puts "Error: #{e.}\n #{e.backtrace.join("\n ")}" end |
#is_command_match_to_line?(command, line) ⇒ Boolean
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# File 'lib/cinatra.rb', line 90 def is_command_match_to_line?(command, line) line.split(' ')[0...command.size] == command end |
#normalize_as_command_name(name) ⇒ Object
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# File 'lib/cinatra.rb', line 84 def normalize_as_command_name(name) name = name.to_s raise ArgumentError, "`#{name}` is invalid for command name." if /^\s*$/ =~ name name.strip.gsub(/\s+/, ' ').to_sym end |
#resolve_command_name_and_arg(line) ⇒ Object
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# File 'lib/cinatra.rb', line 73 def resolve_command_name_and_arg(line) command_names.map {|i| i.split(' ')}.sort_by{|i| i.size}.reverse_each do |command| if is_command_match_to_line?(command, line) name = command.join(' ').to_sym arg = line.split(' ', command.size + 1)[command.size] return name, arg end end return nil, nil end |
#start ⇒ Object
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# File 'lib/cinatra.rb', line 59 def start while !exiting && buf = Readline.readline('> ', true) call(buf) end end |