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# without modification, are permitted provided that the following
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#      copyright notice, this list of conditions and the following
#      disclaimer.
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#      copyright notice, this list of conditions and the following
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def camelCase(s):
    return s[0].lower() + s[1:]


class Fault(Exception):
    def __init__(self, message='', details='', name=''):
        Exception.__init__(self, message, details, name)
        self.message = message
        self.details = details
        self.name = name or camelCase(self.__class__.__name__)

class NotModified(Fault):
    code = 304

class BadRequest(Fault):
    code = 400

class Unauthorized(Fault):
    code = 401

class Forbidden(Fault):
    code = 403

class ItemNotFound(Fault):
    code = 404

class Conflict(Fault):
    code = 409

class LengthRequired(Fault):
    code = 411

class PreconditionFailed(Fault):
    code = 412

class RequestEntityTooLarge(Fault):
    code = 413

class RangeNotSatisfiable(Fault):
    code = 416

class UnprocessableEntity(Fault):
    code = 422

class InternalServerError(Fault):
    code = 500

class NotImplemented(Fault):
    code = 501