Structured search/replace problem

gistfile1.cs

// going from this:
[DataMember]
public string SomeProperty { get; set; )

// ...should lead to this (adding Name property of attribute, using property name, but camel cased):
[DataMember(Name = "someProperty")]
public string SomeProperty { get; set; }

// This should not affect other attributes, so this:
[DataMember]
[Whatever]
public string SomeProperty { get; set; )

// ... should become this:
[DataMember(Name = "someProperty")]
[Whatever]
public string SomeProperty { get; set; }