break classes into their own files

git-svn-id: svn+ssh://rubyforge.org/var/svn/mongrel/trunk@766 19e92222-5c0b-0410-8929-a290d50e31e9

1 files changed, 28 insertions, 0 deletions

diff --git a/lib/mongrel/header_out.rb b/lib/mongrel/header_out.rb
new file mode 100644
index 0000000..b34e95e
--- /dev/null
+++ b/lib/mongrel/header_out.rb
@@ -0,0 +1,28 @@
+module Mongrel
+  # This class implements a simple way of constructing the HTTP headers dynamically
+  # via a Hash syntax.  Think of it as a write-only Hash.  Refer to HttpResponse for
+  # information on how this is used.
+  #
+  # One consequence of this write-only nature is that you can write multiple headers
+  # by just doing them twice (which is sometimes needed in HTTP), but that the normal
+  # semantics for Hash (where doing an insert replaces) is not there.
+  class HeaderOut
+    attr_reader :out
+    attr_accessor :allowed_duplicates
+
+    def initialize(out)
+      @sent = {}
+      @allowed_duplicates = {"Set-Cookie" => true, "Set-Cookie2" => true,
+        "Warning" => true, "WWW-Authenticate" => true}
+      @out = out
+    end
+
+    # Simply writes "#{key}: #{value}" to an output buffer.
+    def[]=(key,value)
+      if not @sent.has_key?(key) or @allowed_duplicates.has_key?(key)
+        @sent[key] = true
+        @out.write(Const::HEADER_FORMAT % [key, value])
+      end
+    end
+  end
+end
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