Move base to DEPS

base/i18n/streaming_utf8_validator.cc

-// 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.
-
-// This implementation doesn't use ICU. The ICU macros are oriented towards
-// character-at-a-time processing, whereas byte-at-a-time processing is easier
-// with streaming input.
-
-#include "base/i18n/streaming_utf8_validator.h"
-
-#include "base/i18n/utf8_validator_tables.h"
-#include "base/logging.h"
-
-namespace base {
-namespace {
-
-uint8 StateTableLookup(uint8 offset) {
-  DCHECK_LT(offset, internal::kUtf8ValidatorTablesSize);
-  return internal::kUtf8ValidatorTables[offset];
-}
-
-}  // namespace
-
-StreamingUtf8Validator::State StreamingUtf8Validator::AddBytes(const char* data,
-                                                               size_t size) {
-  // Copy |state_| into a local variable so that the compiler doesn't have to be
-  // careful of aliasing.
-  uint8 state = state_;
-  for (const char* p = data; p != data + size; ++p) {
-    if ((*p & 0x80) == 0) {
-      if (state == 0)
-        continue;
-      state = internal::I18N_UTF8_VALIDATOR_INVALID_INDEX;
-      break;
-    }
-    const uint8 shift_amount = StateTableLookup(state);
-    const uint8 shifted_char = (*p & 0x7F) >> shift_amount;
-    state = StateTableLookup(state + shifted_char + 1);
-    // State may be INVALID here, but this code is optimised for the case of
-    // valid UTF-8 and it is more efficient (by about 2%) to not attempt an
-    // early loop exit unless we hit an ASCII character.
-  }
-  state_ = state;
-  return state == 0 ? VALID_ENDPOINT
-      : state == internal::I18N_UTF8_VALIDATOR_INVALID_INDEX
-      ? INVALID
-      : VALID_MIDPOINT;
-}
-
-void StreamingUtf8Validator::Reset() {
-  state_ = 0u;
-}
-
-bool StreamingUtf8Validator::Validate(const std::string& string) {
-  return StreamingUtf8Validator().AddBytes(string.data(), string.size()) ==
-         VALID_ENDPOINT;
-}
-
-}  // namespace base