Added stripPrefix option

resolves Leonidas-from-XIV#97

README.md

@@ -220,6 +220,8 @@ value})``. Possible options are:
   * `strict` (default `true`): Set sax-js to strict or non-strict parsing mode.
     Defaults to `true` which is *highly* recommended, since parsing HTML which
     is not well-formed XML might yield just about anything. Added in 0.2.7.
+  * `stripPrefix` (default `false`): Strip namespace prefixes from element and 
+    attribute names. Added in 0.4.1.
 
 Options for the `Builder` class
 -------------------------------

src/xml2js.coffee

@@ -36,6 +36,7 @@ exports.defaults =
     # callbacks are async? not in 0.1 mode
     async: false
     strict: true
+    stripPrefix: false
 
   "0.2":
     explicitCharkey: false
@@ -56,6 +57,7 @@ exports.defaults =
     # not async in 0.2 mode either
     async: false
     strict: true
+    stripPrefix: false
     # xml building options
     rootName: 'root'
     xmldec: {'version': '1.0', 'encoding': 'UTF-8', 'standalone': true}
@@ -181,22 +183,26 @@ class exports.Parser extends events.EventEmitter
     # aliases, so we don't have to type so much
     attrkey = @options.attrkey
     charkey = @options.charkey
+    stripPrefix = @options.stripPrefix
+    prefixMatch = new RegExp /(?!xmlns)^.*:/
 
     @saxParser.onopentag = (node) =>
       obj = {}
       obj[charkey] = ""
       unless @options.ignoreAttrs
         for own key of node.attributes
+          objkey = if @options.stripPrefix then key.replace(prefixMatch, '') else key
           if attrkey not of obj and not @options.mergeAttrs
             obj[attrkey] = {}
           newValue = node.attributes[key]
           if @options.mergeAttrs
-            @assignOrPush obj, key, newValue
+            @assignOrPush obj, objkey, newValue
           else
-            obj[attrkey][key] = newValue
+            obj[attrkey][objkey] = newValue
 
       # need a place to store the node name
-      obj["#name"] = if @options.normalizeTags then node.name.toLowerCase() else node.name
+      nodeName = if @options.normalizeTags then node.name.toLowerCase() else node.name
+      obj["#name"] = if @options.stripPrefix then nodeName.replace(prefixMatch, '') else nodeName
       if (@options.xmlns)
         obj[@options.xmlnskey] = {uri: node.uri, local: node.local}
       stack.push obj

test/parser.test.coffee

@@ -299,6 +299,12 @@ module.exports =
     equ r.sample["pfx:top"][0].middle[0].$ns.local, 'middle'
     equ r.sample["pfx:top"][0].middle[0].$ns.uri, 'http://bar.com')
 
+  'test stripPrefix': skeleton(stripPrefix: true, (r) ->
+    console.log 'Result object: ' + util.inspect r, false, 10
+    equ r.sample["top"][0].$["attr"], 'baz'
+    equ r.sample["top"][0].$["xmlns:pfx"], 'http://foo.com'
+  )
+
   'test callback should be called once': (test) ->
     xml = '<?xml version="1.0" encoding="utf-8"?><test>test</test>'
     i = 0