init

1 files changed, 65 insertions, 0 deletions

diff --git a/Library/Homebrew/cask/lib/hbc/source/path_base.rb b/Library/Homebrew/cask/lib/hbc/source/path_base.rb
new file mode 100644
index 000000000..bbb413fd3
--- /dev/null
+++ b/Library/Homebrew/cask/lib/hbc/source/path_base.rb
@@ -0,0 +1,65 @@
+require "rubygems"
+
+class Hbc::Source::PathBase
+  # derived classes must define method self.me?
+
+  def self.path_for_query(query)
+    query_string = query.to_s
+    Pathname.new(query_string.end_with?(".rb") ? query_string : query_string + ".rb")
+  end
+
+  attr_reader :path
+
+  def initialize(path)
+    @path = Pathname(path).expand_path
+  end
+
+  def load
+    raise Hbc::CaskError, "File '#{path}' does not exist"      unless path.exist?
+    raise Hbc::CaskError, "File '#{path}' is not readable"     unless path.readable?
+    raise Hbc::CaskError, "File '#{path}' is not a plain file" unless path.file?
+    load_cask
+  end
+
+  def to_s
+    # stringify to fully-resolved location
+    path.to_s
+  end
+
+  private
+
+  def load_cask
+    instance_eval(cask_contents, __FILE__, __LINE__)
+  rescue Hbc::CaskError, StandardError, ScriptError => e
+    # bug: e.message.concat doesn't work with Hbc::CaskError exceptions
+    raise e, e.message.concat(" while loading '#{path}'")
+  end
+
+  def cask_contents
+    File.open(path, "rb") do |handle|
+      contents = handle.read
+      if defined?(Encoding)
+        contents.force_encoding("UTF-8")
+      else
+        contents
+      end
+    end
+  end
+
+  def cask(header_token, &block)
+    build_cask(Hbc::Cask, header_token, &block)
+  end
+
+  def test_cask(header_token, &block)
+    build_cask(Hbc::TestCask, header_token, &block)
+  end
+
+  def build_cask(cask_class, header_token, &block)
+    raise Hbc::CaskTokenDoesNotMatchError.new(cask_token, header_token) unless cask_token == header_token
+    cask_class.new(cask_token, sourcefile_path: path, &block)
+  end
+
+  def cask_token
+    path.basename.to_s.sub(%r{\.rb}, "")
+  end
+end