1 files changed, 100 insertions, 0 deletions
diff --git a/Library/Homebrew/pathname+yeast.rb b/Library/Homebrew/pathname+yeast.rb
new file mode 100644
index 000000000..75eb98bba
--- /dev/null
+++ b/Library/Homebrew/pathname+yeast.rb
@@ -0,0 +1,100 @@
+#  Copyright 2009 Max Howell <max@methylblue.com>
+#
+#  This file is part of Homebrew.
+#
+#  Homebrew is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+#
+#  Homebrew is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with Homebrew.  If not, see <http://www.gnu.org/licenses/>.
+
+require 'pathname'
+
+# we enhance pathname to make our code more readable
+class Pathname
+  def mv dst    
+    FileUtils.mv to_s, dst
+  end
+  
+  def rename dst
+    dst=Pathname.new dst
+    dst.unlink if dst.exist?
+    mv dst
+  end
+
+  def install src
+    if src.is_a? Array
+      src.each {|src| install src }
+    elsif File.exist? src
+      mkpath
+      if File.symlink? src
+        # we use the BSD mv command because FileUtils copies the target and
+        # not the link! I'm beginning to wish I'd used Python quite honestly!
+        `mv #{src} #{to_s}`
+      else
+        # we mv when possible as it is faster and you should only be using
+        # this function when installing from the temporary build directory
+        FileUtils.mv src, to_s
+      end
+    end
+  end
+
+  def cp dst
+    if file?
+      FileUtils.cp to_s, dst
+    else
+      FileUtils.cp_r to_s, dst
+    end
+  end
+
+  # extended to support the double extensions .tar.gz and .tar.bz2
+  def extname
+    /(\.tar\.(gz|bz2))$/.match to_s
+    return $1 if $1
+    return File.extname(to_s)
+  end
+
+  # for filetypes we support, basename without extension
+  def stem
+    return File.basename(to_s, extname)
+  end
+
+  def version
+    # eg. boost_1_39_0
+    /((\d+_)+\d+)$/.match stem
+    return $1.gsub('_', '.') if $1
+
+    # eg. foobar-4.5.1-1
+    /-((\d+\.)*\d+-\d+)$/.match stem
+    return $1 if $1
+
+    # eg. foobar-4.5.1
+    /-((\d+\.)*\d+)$/.match stem
+    return $1 if $1
+
+    # eg. foobar-4.5.1b
+    /-((\d+\.)*\d+([abc]|rc\d))$/.match stem
+    return $1 if $1
+
+    # eg foobar-4.5.0-beta1
+    /-((\d+\.)*\d+-beta\d+)$/.match stem
+    return $1 if $1
+
+    # eg. foobar4.5.1
+    /((\d+\.)*\d+)$/.match stem
+    return $1 if $1
+
+    # eg. otp_src_R13B (this is erlang's style)
+    # eg. astyle_1.23_macosx.tar.gz
+    stem.scan /_([^_]+)/ do |match|
+      return match.first if /\d/.match $1
+    end
+  end
+end