Refactor0.4

Large refactor to Formula, mostly improving reliability and error handling but
also layout and readability.

General improvements so testing can be more complete.

Patches are automatically downloaded and applied for Formula that return a
list of urls from Formula::patches.

Split out the brew command logic to facilitate testing.

Facility from Adam Vandenberg to allow selective cleaning of files, added
because Python doesn't work when stripped.

1 files changed, 20 insertions, 1 deletions

diff --git a/Library/Homebrew/utils.rb b/Library/Homebrew/utils.rb
index 112c6b6b6..bb64c3851 100644
--- a/Library/Homebrew/utils.rb
+++ b/Library/Homebrew/utils.rb
@@ -22,5 +22,24 @@ end
 
 # shows a warning in delicious pink
 def opoo warning
-  puts "WARNING \033[1;35m#{warning}\033[0;0m"
+  puts "\033[1;35m==>\033[0;0;1m Warning\033[0;0m: #{warning}"
+end
+
+def onoe error
+  puts "\033[1;31m==>\033[0;0;1m Error\033[0;0m: #{error}"
+end
+
+def pretty_duration s
+  return "#{(s*1000).to_i} milliseconds" if s < 3
+  return "#{s.to_i} seconds" if s < 10*60
+  return "#{(s/60).to_i} minutes"
+end
+
+def interactive_shell
+  pid=fork
+  if pid.nil?
+    exec ENV['SHELL']
+  else
+    Process.wait pid
+  end
 end