Module: Yarsh

Included in:
Shell
Defined in:
lib/yarsh.rb,
lib/yarsh.rb,
lib/yarsh/shell.rb,
lib/yarsh/config.rb,
lib/yarsh/prompt.rb,
lib/yarsh/version.rb,
lib/yarsh/multiline.rb,
lib/yarsh/instance_methods.rb,
lib/yarsh/ansi_color_formatter.rb,
sig/yarsh.rbs

Defined Under Namespace

Modules: InstanceMethods, Multiline, Prompt Classes: AnsiColorFormatter, Config, Error, ExecOutput, InvalidPromptError, Shell

Constant Summary collapse

YARSH_DIR = 
'~/.yarsh'
HISTORY_FILE = 
File.join Yarsh::YARSH_DIR, 'history'
CONFIG_FILE = 
File.join Yarsh::YARSH_DIR, 'config'
VERSION =

Returns:

  • (String) 
'0.2.0'

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.console ⇒ Object 



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# File 'lib/yarsh.rb', line 86

def self.console
  require 'irb'
  IRB.start(__FILE__)
end

.current_shell ⇒ Object 



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# File 'lib/yarsh.rb', line 39

def self.current_shell
  @current_shell
end

.current_shell=(shell) ⇒ Object 



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# File 'lib/yarsh.rb', line 43

def self.current_shell=(shell)
  @current_shell = shell
end

.execute_system_command(command) ⇒ Object 



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# File 'lib/yarsh.rb', line 68

def self.execute_system_command(command)
  Open3.popen3(command) do |input, output, error, wait_thread|
    output_printer = Thread.new do
      output.read.tap { |data| print data }
    end
    error_printer = Thread.new do
      error.read.tap { |data| $stderr.print data }
    end
    Thread.new do
      input.write($stdin.read)
    end
    output_printer.join
    error_printer.join

    wait_thread.value
  end
end

.expand_aliases(input, aliases) ⇒ Object

in a Shell input, find all command matching the keys of aliases and replace them with the values. Leading and trailing whitespace around the match is preserved.



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# File 'lib/yarsh.rb', line 49

def self.expand_aliases(input, aliases)
  return input if aliases.empty?

  terms = aliases.keys.map { |k| Regexp.escape(k.to_s) }.join('|')
  regex = Regexp.new(/(^| +)(#{terms})(?![A-Za-z0-9_])/)
  input.gsub(regex) do |match|
    rep = aliases[match.strip]
    next match unless rep

    match[/\A( +)/, 1].to_s + rep
  end
end

Instance Method Details

#shell_path?(input) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/yarsh.rb', line 62

def shell_path?(input)
  input.match?(%r{\A\.\.?/}) ||
    input.match?(%r{\A/}) ||
    input.match?(/\A~/)
end