Add support for unsigned int64 in string_number_conversions

base/strings/string_number_conversions.cc

 // Copyright (c) 2012 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.
 
 #include "base/strings/string_number_conversions.h"
 
 #include <ctype.h>
 #include <errno.h>
 #include <stdlib.h>
 #include <wctype.h>
@@ skipping 284 matching lines @@
 template<typename ITERATOR>
 class BaseHexIteratorRangeToIntTraits
     : public BaseIteratorRangeToNumberTraits<ITERATOR, int, 16> {
 };
 
 template<typename ITERATOR>
 class BaseHexIteratorRangeToInt64Traits
     : public BaseIteratorRangeToNumberTraits<ITERATOR, int64, 16> {
 };
 
+template<typename ITERATOR>
+class BaseHexIteratorRangeToUInt64Traits
+    : public BaseIteratorRangeToNumberTraits<ITERATOR, uint64, 16> {
+};
+
 typedef BaseHexIteratorRangeToIntTraits<StringPiece::const_iterator>
     HexIteratorRangeToIntTraits;
 
 typedef BaseHexIteratorRangeToInt64Traits<StringPiece::const_iterator>
     HexIteratorRangeToInt64Traits;
 
+typedef BaseHexIteratorRangeToUInt64Traits<StringPiece::const_iterator>
+    HexIteratorRangeToUInt64Traits;
+
 template<typename STR>
 bool HexStringToBytesT(const STR& input, std::vector<uint8>* output) {
   DCHECK_EQ(output->size(), 0u);
   size_t count = input.size();
   if (count == 0 || (count % 2) != 0)
     return false;
   for (uintptr_t i = 0; i < count / 2; ++i) {
     uint8 msb = 0;  // most significant 4 bits
     uint8 lsb = 0;  // least significant 4 bits
     if (!CharToDigit<16>(input[i * 2], &msb) ||
@@ skipping 163 matching lines @@
 bool HexStringToInt(const StringPiece& input, int* output) {
   return IteratorRangeToNumber<HexIteratorRangeToIntTraits>::Invoke(
     input.begin(), input.end(), output);
 }
 
 bool HexStringToInt64(const StringPiece& input, int64* output) {
   return IteratorRangeToNumber<HexIteratorRangeToInt64Traits>::Invoke(
     input.begin(), input.end(), output);
 }
 
+bool HexStringToUInt64(const StringPiece& input, uint64* output) {
+  return IteratorRangeToNumber<HexIteratorRangeToUInt64Traits>::Invoke(
+      input.begin(), input.end(), output);
+}
+
 bool HexStringToBytes(const std::string& input, std::vector<uint8>* output) {
   return HexStringToBytesT(input, output);
 }
 
 }  // namespace base