globals now implemented and documented

app/models/global_setting.rb

@@ -36,22 +36,62 @@ class GlobalSetting
   )
 
   class BaseProvider
-    def lookup(name, val)
-      t = ENV["D_" << name.to_s.upcase]
-      if t.present?
-        t
-      else
-        val.present? ? val : nil
+    def self.coerce(setting)
+      return setting == "true" if setting == "true" || setting == "false"
+      return $1.to_i if setting.to_s.strip =~ /^([0-9]+)$/
+      setting
+    end
+
+
+    def resolve(current, default)
+      BaseProvider.coerce(
+        if current.present?
+          current
+        else
+          default.present? ? default : nil
+        end
+      )
+    end
+  end
+
+  class FileProvider < BaseProvider
+    def self.from(file)
+      if File.exists?(file)
+        parse(file)
       end
     end
-  end
 
-  class FileProvider
-    def self.from(location)
+    def initialize(file)
+      @file = file
+      @data = {}
+    end
+
+    def read
+      File.read(@file).split("\n").each do |line|
+        if line =~ /([a-z_]+)\s*=\s*(\"([^\"]*)\"|\'([^\']*)\'|[^#]*)/
+          @data[$1.strip.to_sym] = ($4 || $3 || $2).strip
+        end
+      end
+    end
+
+
+    def lookup(key,default)
+      resolve(@data[key], default)
+    end
+
+
+    private
+    def self.parse(file)
+      provider = self.new(file)
+      provider.read
+      provider
     end
   end
 
-  class EnvProvider
+  class EnvProvider < BaseProvider
+    def lookup(key, default)
+      resolve(ENV["DISCOURSE_" << key.to_s.upcase], default)
+    end
   end
 
 
@@ -60,6 +100,6 @@ class GlobalSetting
   end
 
   @provider =
-    FileProvider.from(Rails.root + '/config/discourse.conf') ||
+    FileProvider.from(File.expand_path('../../../config/discourse.conf', __FILE__)) ||
     EnvProvider.new
 end

config/application.rb

@@ -5,6 +5,9 @@ require 'redis-store' # HACK
 # Plugin related stuff
 require_relative '../lib/discourse_plugin_registry'
 
+# Global config
+require_relative '../app/models/global_setting'
+
 if defined?(Bundler)
   # If you precompile assets before deploying to production, use this line
   Bundler.require(*Rails.groups(assets: %w(development test profile)))

config/discourse_defaults.conf

@@ -0,0 +1,76 @@
+#
+# DO NOT EDIT THIS FILE
+# If you need to make changes create a file called discourse.conf in this directory with your changes
+
+# Discourse supports multiple mechanisms for production config.
+#
+# 1. You can do nothing and get these defaults (not recommended, you should at least set hostname)
+# 2. You can copy this file to config/discourse.conf and amend with your settings
+# 3. You can pass in config from your environment, all the settings below are available.
+    Append DISCOURSE_ and upper case the setting in ENV. For example:
+    to pass in db_timeout of 200 you would use DISCOURSE_DB_TIMEOUT=200
+
+# All settings apply to production only
+
+# connection pool size
+db_pool = 5
+
+# database timeout in milliseconds
+db_timeout = 5000
+
+# socket file used to access db
+db_socket
+
+# host address for db server
+db_host = localhost
+
+# port running db server
+db_port, 5432],
+
+# database name running discourse
+db_name = discourse
+
+# username accessing database
+db_username = discourse
+
+# password used to access the db
+db_password =
+
+# hostname running the forum
+hostname = "www.example.com"
+
+# address of smtp server used to send emails
+smtp_address =
+
+# port of smtp server used to send emails
+smtp_port = 25
+
+# domain passed to smtp server
+smtp_domain =
+
+# username for smtp server
+smtp_user_name =
+
+# password for smtp server
+smtp_password =
+
+# enable TLS encryption for smtp connections
+smtp_enable_start_tls = true
+
+# enable MiniProfiler for administrators
+enable_mini_profiler = true
+
+# recommended, cdn used to access assets
+cdn_url =
+
+# comma delimited list of emails that have devloper level access
+developer_emails =
+
+# redis server address
+redis_host = localhost
+
+# redis server port
+redis_port = 6379
+
+# redis password
+redis_password =

spec/models/global_setting_spec.rb

@@ -0,0 +1,22 @@
+require 'spec_helper'
+require 'tempfile'
+
+describe GlobalSetting::FileProvider do
+  it "can parse a simple file" do
+    f = Tempfile.new('foo')
+    f.write("  # this is a comment\n")
+    f.write("\n")
+    f.write("a = 1000  # this is a comment\n")
+    f.write("b = \"10 # = 00\"  # this is a # comment\n")
+    f.write("c = \'10 # = 00\' # this is a # comment\n")
+    f.close
+
+    provider = GlobalSetting::FileProvider.from(f.path)
+
+    provider.lookup(:a,"").should == 1000
+    provider.lookup(:b,"").should == "10 # = 00"
+    provider.lookup(:c,"").should == "10 # = 00"
+
+    f.unlink
+  end
+end