From 080a7ee3dc0eafb5221ecda185caff1c63748d0f Mon Sep 17 00:00:00 2001
From: Adam Vandenberg <flangy@gmail.com>
Date: Fri, 19 Feb 2010 21:55:17 -0800
Subject: [PATCH] brew --cache [formula]

This developer-oriented command lets you ask Homebrew what the cached
filename will be for a brew's tarball.
---
 Library/Homebrew/download_strategy.rb | 2 ++
 Library/Homebrew/formula.rb           | 4 ++++
 bin/brew                              | 9 ++++++++-
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/Library/Homebrew/download_strategy.rb b/Library/Homebrew/download_strategy.rb
index e60b879b69..b49cf4d6ec 100644
--- a/Library/Homebrew/download_strategy.rb
+++ b/Library/Homebrew/download_strategy.rb
@@ -53,6 +53,8 @@ class AbstractDownloadStrategy
 end
 
 class CurlDownloadStrategy <AbstractDownloadStrategy
+  attr_reader :tarball_path
+  
   def initialize url, name, version, specs
     super
     if @unique_token
diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index 0af5651e3b..34cd5ef24b 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -133,6 +133,10 @@ class Formula
     self.class.path name
   end
 
+  def cached_download
+    @downloader.tarball_path
+  end
+
   attr_reader :url, :version, :homepage, :name, :specs
 
   def bin; prefix+'bin' end
diff --git a/bin/brew b/bin/brew
index dfbc4e3dd9..f1e445b1b5 100755
--- a/bin/brew
+++ b/bin/brew
@@ -14,7 +14,14 @@ require 'global'
 
 case ARGV.first
 when '--cache'
-  puts HOMEBREW_CACHE
+  if ARGV.named.empty?
+    puts HOMEBREW_CACHE
+  else
+    require 'formula'
+    ARGV.named.each do |name|
+      puts Formula.factory(name).cached_download rescue '(built from source control)'
+    end
+  end
   exit 0
 when '-h', '--help', '--usage', '-?', 'help', nil
   puts ARGV.usage