Class: Zillabyte::Command::Repl

Inherits:
Base
  • Object
show all
Defined in:
lib/zillabyte/cli/repl.rb

Overview

REPL console for zillabyte commands

Constant Summary

Constants inherited from Base

Base::META_COLUMNS

Instance Attribute Summary

Attributes inherited from Base

#args, #options

Instance Method Summary collapse

Methods inherited from Base

#api, #initialize, namespace

Methods included from Helpers

#app, #ask, #command, #create_git_remote, #display, #error, #extract_app_from_git_config, #extract_app_in_dir, #format_with_bang, #friendly_dir, #get_flow_ui_link, #get_info, #get_rich_info, #git, #handle_downloading_manifest, #has_git?, #longest, #read_multiline, #truncate_message, #version_okay?, #with_tty

Constructor Details

This class inherits a constructor from Zillabyte::Command::Base

Instance Method Details

#index ⇒ Object

repl

Start a console session for zillabyte.

–quiet # HIDDEN –history HISTORY # HIDDEN hack to allow history for readline



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# File 'lib/zillabyte/cli/repl.rb', line 13

def index
  require("readline")
  require("shellwords")
  if !options[:quiet]
    Zillabyte::Command.load("version")
    Zillabyte::Command.run("version")
    display "Type q,exit or Ctrl+D to quit\n\n"
  end
  server = `echo $ZILLABYTE_API_HOST` || ""
  prompt = ""
  if server && server.chomp.length > 0
    prompt = "#{server.chomp} " 
  end
  prompt += "zillabyte $ "
  if options[:history]
    #p options[:history]
    history = JSON.parse(options[:history])
    history.last(50).each do |his|
      # TODO: Handle single quotes ??
      Readline::HISTORY << his
    end
  end
  # TODO: Add tab completion for basic commands, app/dataset names etc.
  buf = ""
  while cmd = Readline.readline(prompt, true)
    if cmd && cmd.length > 0
      if cmd.downcase == "exit" || cmd.downcase == "q"
        display "" # TODO Make Ctrl+D print a newline too
        return
      else
        buf << cmd
        begin
          args = Shellwords.split(buf)
          raise if args.empty?()
          command = args.shift
          buf = ""
          begin
            pid = fork() do
              Zillabyte::Command.load(command)
              Zillabyte::Command.run(command, args)
            end
          ensure
            Process.waitpid(pid)
          end
        rescue => e
        end
      end
    end
  end
end