irb: add pry support.

Make `brew irb` optionally support `pry`. While doing so, also make it a `dev-cmd`.

1 files changed, 54 insertions, 0 deletions

diff --git a/Library/Homebrew/dev-cmd/irb.rb b/Library/Homebrew/dev-cmd/irb.rb
new file mode 100644
index 000000000..700cbe009
--- /dev/null
+++ b/Library/Homebrew/dev-cmd/irb.rb
@@ -0,0 +1,54 @@
+#:  * `irb` [`--examples`] [`--pry`]:
+#:    Enter the interactive Homebrew Ruby shell.
+#:
+#:    If `--examples` is passed, several examples will be shown.
+#:    If `--pry` is passed or HOMEBREW_PRY is set, pry will be
+#:    used instead of irb.
+
+class Symbol
+  def f(*args)
+    Formulary.factory(to_s, *args)
+  end
+end
+
+class String
+  def f(*args)
+    Formulary.factory(self, *args)
+  end
+end
+
+module Homebrew
+  module_function
+
+  def irb
+    if ARGV.include? "--examples"
+      puts "'v8'.f # => instance of the v8 formula"
+      puts ":hub.f.installed?"
+      puts ":lua.f.methods - 1.methods"
+      puts ":mpd.f.recursive_dependencies.reject(&:installed?)"
+      return
+    end
+
+    if ARGV.pry?
+      Homebrew.install_gem_setup_path! "pry"
+      require "pry"
+      Pry.config.prompt_name = "brew"
+    else
+      require "irb"
+    end
+
+    require "formula"
+    require "keg"
+
+    $LOAD_PATH.unshift("#{HOMEBREW_LIBRARY_PATH}/cask/lib")
+    require "hbc"
+
+    ohai "Interactive Homebrew Shell"
+    puts "Example commands available with: brew irb --examples"
+    if ARGV.pry?
+      Pry.start
+    else
+      IRB.start
+    end
+  end
+end