Ported absolute and isFile to Objective-c.

This took fileFinder loading from .8 seconds to .35 seconds.

Atom/Classes/AtomController.m

@@ -155,6 +155,25 @@
   });
 }
 
+- (BOOL)isFile:(NSString *)path {
+  BOOL isDir;
+  BOOL exists;
+  exists = [[NSFileManager defaultManager] fileExistsAtPath:path isDirectory:&isDir];
+  return exists && !isDir;
+}
+
+- (NSString *)absolute:(NSString *)path {
+  path = [path stringByStandardizingPath];
+  if ([path characterAtIndex:0] == '/') {
+    return path;
+  }
+    
+  NSString *resolvedPath = [[NSFileManager defaultManager] currentDirectoryPath];
+  resolvedPath = [[resolvedPath stringByAppendingPathComponent:path] stringByStandardizingPath];
+  
+  return resolvedPath;
+}
+
 #pragma mark NSWindowDelegate
 - (BOOL)windowShouldClose:(id)sender {
   [self close];

src/stdlib/fs.coffee

@@ -9,13 +9,7 @@ module.exports =
   # Make the given path absolute by resolving it against the
   # current working directory.
   absolute: (path) ->
-    path = OSX.NSString.stringWithString(path).stringByStandardizingPath
-    return path if path.toString()[0] == "/"
-
-    resolvedString = OSX.NSString.stringWithString(@workingDirectory())
-    resolvedString = resolvedString.stringByAppendingPathComponent(path).stringByStandardizingPath
-
-    resolvedString.toString()
+    $atomController.absolute(path).toString()
 
   # Return the basename of the given path. That is the path with
   # any leading directory components removed. If specified, also
@@ -48,11 +42,7 @@ module.exports =
   # Returns true if the file specified by path exists and is a
   # regular file.
   isFile: (path) ->
-    path = @absolute path
-    isDir = new jscocoa.outArgument
-    exists = OSX.NSFileManager.defaultManager.
-      fileExistsAtPath_isDirectory path, isDir
-    exists and not isDir.valueOf()
+    $atomController.isFile path
 
   # Returns an array with all the names of files contained
   # in the directory path.