Makes encoding an optional parameter

Author: badave

lib/connection-parameters.js

@@ -38,6 +38,7 @@ var ConnectionParameters = function(config) {
   this.password = val('password', config);
   this.binary = val('binary', config);
   this.ssl = config.ssl || defaults.ssl;
+  this.client_encoding = config.encoding || defaults.encoding;
   //a domain socket begins with '/'
   this.isDomainSocket = (!(this.host||'').indexOf('/'));
 };
@@ -61,7 +62,9 @@ ConnectionParameters.prototype.getLibpqConnectionString = function(cb) {
     params.push("host=" + this.host);
     return cb(null, params.join(' '));
   }
-  params.push("client_encoding='utf-8'");
+  if(this.client_encoding) {
+    params.push(this.client_encoding);
+  }
   dns.lookup(this.host, function(err, address) {
     if(err) return cb(err, null);
     params.push("hostaddr=" + address);

lib/defaults.js

@@ -31,5 +31,7 @@ module.exports = {
   reapIntervalMillis: 1000,
 
   //pool log function / boolean
-  poolLog: false
+  poolLog: false,
+
+  encoding: ""
 };