#!/usr/bin/env ruby

# (C) John Mair (banisterfiend)
# MIT license

$0 = 'pry'

begin
  require 'pry'
rescue LoadError
  require 'rubygems'
  require 'pry'
end

opts = Slop.parse(:help => true, :multiple_switches => false) do
  banner %{Usage: pry [OPTIONS]
Start a Pry session.
See: `https://github.com/pry` for more information.
Copyright (c) 2011 John Mair (banisterfiend)
--
}

  on :e, :exec, "A line of code to execute in context before the session starts", true

  on "no-pager", "Disable pager for long output" do
    Pry.config.pager = false
  end

  on "no-history", "Disable history loading" do
    Pry.config.history.should_load = false
  end

  on "no-color", "Disable syntax highlighting for session" do
    Pry.color = false
  end

  on :f, "Suppress loading of ~/.pryrc" do
    # load ~/.pryrc, if not suppressed with -f option
    Pry.config.should_load_rc = false
  end

  on "no-plugins", "Suppress loading of plugins." do
    # suppress plugins if given --no-plugins optino
    Pry.config.plugins.enabled = false
  end

  on "installed-plugins", "List installed plugins." do
    puts "Installed Plugins:"
    puts "--"
    Pry.locate_plugins.each do |plugin|
      puts "#{plugin.name}".ljust(18) + plugin.spec.summary
    end
    exit
  end

  on "simple-prompt", "Enable simple prompt mode" do
    Pry.prompt = Pry::SIMPLE_PROMPT
  end

  on :r, :require, "`require` a Ruby script at startup", true do |file|
    Pry.config.requires << file
  end

  on :I, "Add a path to the $LOAD_PATH", true do |path|
    $LOAD_PATH << path
  end

  on :v, :version, "Display the Pry version" do
    puts "Pry version #{Pry::VERSION} on Ruby #{RUBY_VERSION}"
    exit
  end

  on(:c, :context,
    "Start the session in the specified context. Equivalent to `context.pry` in a session.",
    true,
    :default => "TOPLEVEL_BINDING"
    )
end

# invoked via cli
Pry.cli = true

# create the actual context
context = Pry.binding_for(eval(opts[:context]))

if opts[:exec]
  exec_string = opts[:exec] + "\n"
else
  exec_string = ""
end

# Start the session (running any code passed with -e, if there is any)
Pry.start(context, :input => StringIO.new(exec_string), :input_stack => [Readline])