Move base to DEPS

base/i18n/streaming_utf8_validator.h

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// A streaming validator for UTF-8. Validation is based on the definition in
-// RFC-3629. In particular, it does not reject the invalid characters rejected
-// by base::IsStringUTF8().
-//
-// The implementation detects errors on the first possible byte.
-
-#ifndef BASE_I18N_STREAMING_UTF8_VALIDATOR_H_
-#define BASE_I18N_STREAMING_UTF8_VALIDATOR_H_
-
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/i18n/base_i18n_export.h"
-
-namespace base {
-
-class BASE_I18N_EXPORT StreamingUtf8Validator {
- public:
-  // The validator exposes 3 states. It starts in state VALID_ENDPOINT. As it
-  // processes characters it alternates between VALID_ENDPOINT and
-  // VALID_MIDPOINT. If it encounters an invalid byte or UTF-8 sequence the
-  // state changes permanently to INVALID.
-  enum State {
-    VALID_ENDPOINT,
-    VALID_MIDPOINT,
-    INVALID
-  };
-
-  StreamingUtf8Validator() : state_(0u) {}
-  // Trivial destructor intentionally omitted.
-
-  // Validate |size| bytes starting at |data|. If the concatenation of all calls
-  // to AddBytes() since this object was constructed or reset is a valid UTF-8
-  // string, returns VALID_ENDPOINT. If it could be the prefix of a valid UTF-8
-  // string, returns VALID_MIDPOINT. If an invalid byte or UTF-8 sequence was
-  // present, returns INVALID.
-  State AddBytes(const char* data, size_t size);
-
-  // Return the object to a freshly-constructed state so that it can be re-used.
-  void Reset();
-
-  // Validate a complete string using the same criteria. Returns true if the
-  // string only contains complete, valid UTF-8 codepoints.
-  static bool Validate(const std::string& string);
-
- private:
-  // The current state of the validator. Value 0 is the initial/valid state.
-  // The state is stored as an offset into |kUtf8ValidatorTables|. The special
-  // state |kUtf8InvalidState| is invalid.
-  uint8 state_;
-
-  // This type could be made copyable but there is currently no use-case for
-  // it.
-  DISALLOW_COPY_AND_ASSIGN(StreamingUtf8Validator);
-};
-
-}  // namespace base
-
-#endif  // BASE_I18N_STREAMING_UTF8_VALIDATOR_H_