* moved classes and modules into PostgresPR module

* moved main part from postgres.rb into postgres-pr/postgres-compat.rb.
  postgres.rb now only contains the LoadError dispatch.
* new version 0.2.2

README

@@ -21,5 +21,5 @@ Then in the interactive Ruby interpreter type (replace DBNAME and DBUSER
 accordingly):
 
   require 'postgres-pr/connection'
-  c = Connection.new('DBNAME', 'DBUSER')
+  c = PostgresPR::Connection.new('DBNAME', 'DBUSER')
   c.query('SELECT 1+2').rows              # => [["3"]]

examples/test_connection.rb

@@ -1,8 +1,9 @@
 $LOAD_PATH.unshift '../lib'
 require 'postgres-pr/connection'
 
-conn = Connection.new('mneumann', 'mneumann')
-p conn.query("DROP TABLE test; CREATE TABLE test (a VARCHAR(100))")
+conn = PostgresPR::Connection.new('mneumann', 'mneumann')
+p conn.query("DROP TABLE test") rescue nil
+p conn.query("CREATE TABLE test (a VARCHAR(100))")
 p conn.query("INSERT INTO test VALUES ('hallo')") 
 p conn.query("INSERT INTO test VALUES ('leute')") 
 conn.query("COMMIT")

lib/postgres-pr/connection.rb

@@ -8,6 +8,8 @@
 require 'socket'
 require 'thread'
 
+module PostgresPR
+
 PROTO_VERSION = 3 << 16   #196608
 
 class Connection
@@ -140,3 +142,5 @@ def establish_connection(uri)
     end
   end
 end
+
+end # module PostgresPR

lib/postgres-pr/message.rb

@@ -6,6 +6,8 @@
 require 'buffer'
 require 'readbytes'
 
+module PostgresPR
+
 class ParseError < RuntimeError; end
 class DumpError < RuntimeError; end
 
@@ -520,3 +522,5 @@ class Sync < Message
 class Terminate < Message
   register_message_type ?X
 end
+
+end # module PostgresPR

lib/postgres-pr/postgres-compat.rb

@@ -0,0 +1,52 @@
+# This is a compatibility layer for using the pure Ruby postgres-pr instead of
+# the C interface of postgres.
+
+require 'postgres-pr/connection'
+
+class PGconn
+  class << self
+    alias connect new
+  end
+
+  def initialize(host, port, options, tty, database, user, auth)
+    uri =
+    if host.nil?
+      nil
+    elsif host[0] != ?/
+      "tcp://#{ host }:#{ port }"
+    else
+      "unix:#{ host }/.s.PGSQL.#{ port }"
+    end
+
+    @db = database
+    @conn = PostgresPR::Connection.new(database, user, auth, uri)
+  end
+
+  attr_reader :db
+
+  def query(sql)
+    PGresult.new(@conn.query(sql))
+  end
+
+  alias exec query
+end
+
+class PGresult
+  attr_reader :fields, :result
+
+  def initialize(res)
+    @res = res
+    @fields = @res.fields.map {|f| f.name}
+    @result = @res.rows
+  end
+
+  include Enumerable
+
+  def each(&block)
+    @result.each(&block)
+  end
+
+  def [](index)
+    @result[index]
+  end
+end

lib/postgres.rb

@@ -4,52 +4,5 @@
 begin
   require 'postgres.so'
 rescue LoadError
-  require 'postgres-pr/connection'
-  class PGconn
-    class << self
-      alias connect new
-    end
-
-    def initialize(host, port, options, tty, database, user, auth)
-      uri =
-      if host.nil?
-        nil
-      elsif host[0] != ?/
-        "tcp://#{ host }:#{ port }"
-      else
-        "unix:#{ host }/.s.PGSQL.#{ port }"
-      end
-
-      @db = database
-      @conn = Connection.new(database, user, auth, uri)
-    end
-
-    attr_reader :db
-
-    def query(sql)
-      PGresult.new(@conn.query(sql))
-    end
-
-    alias exec query
-  end
-
-  class PGresult
-    attr_reader :fields, :result
-
-    def initialize(res)
-      @res = res
-      @fields = @res.fields.map {|f| f.name}
-      @result = @res.rows
-    end
-
-    include Enumerable
-
-    def each(&block)
-      @result.each(&block)
-    end
-
-    def [](index)
-      @result[index]
-    end
-  end
+  require 'postgres-pr/postgres-compat'
 end

postgres-pr.gemspec

@@ -2,7 +2,7 @@ require 'rubygems'
 
 spec = Gem::Specification.new do |s|
   s.name = 'postgres-pr'
-  s.version = '0.2.1'
+  s.version = '0.2.2'
   s.summary = 'A pure Ruby interface to the PostgreSQL database'
 
   s.files = (Dir['lib/**/*'] + Dir['test/**/*'] + 

test/TC_message.rb

@@ -24,6 +24,8 @@ def #{a}=(v) @#{a}=v end
 
 $LOAD_PATH.unshift '../lib'
 require 'postgres-pr/message'
+include PostgresPR
+
 class Buffer
   alias old_content content
   def content