Fix traceback parsing under Safari.

Safari (possibly just Safari 6) ends up in the Firefox traceback parser. This actually works with two minor fixes: - Function arguments are not supplied so don't attempt to parse them out. - Tracebacks appear to end in a '[native code]' entry. Deal with this.

Author: jeamland

src/raven.js

@@ -160,7 +160,7 @@
  if (e.stack.indexOf('@') == -1) {
  traceback = this.chromeTraceback(e);
  } else {
- traceback = this.firefoxTraceback(e);
+ traceback = this.firefoxOrSafariTraceback(e);
  }
  } else {
  traceback = [{"filename": fileurl, "lineno": lineno}];
@@ -234,7 +234,7 @@
  return traceback;
  };
 
- Raven.firefoxTraceback = function(e) {
+ Raven.firefoxOrSafariTraceback = function(e) {
  /*
  * Each line is a function with args and a filename, separated by an ampersand.
  * unsubstantiatedClaim("I am Batman")@http://raven-js.com/test/exception.js:7
@@ -252,7 +252,7 @@
  if (chunks[0]) {
  fn = chunks[0].split('(');
 
- if (fn[1] != ')') {
+ if (fn.length > 1 && fn[1] != ')') {
  args = fn[1].slice(0, -1).split(',');
  } else {
  args = undefined;
@@ -267,9 +267,16 @@
  fn = '(unknown)';
  }
 
- filename = chunks[1].split(':');
- lineno = filename.slice(-1)[0];
- filename = filename.slice(0, -1).join(':');
+ if (chunks.length > 1) {
+ filename = chunks[1].split(':');
+ lineno = filename.slice(-1)[0];
+ filename = filename.slice(0, -1).join(':');
+ } else if (chunks[0] == '[native code]') {
+ fn = '(unknown)';
+ filename = '[native code]';
+ lineno = 0;
+ args = undefined;
+ }
 
  traceback.push({
  'function': fn,