webrtc/rtc_base/string_to_number.cc
Danil Chapovalov 0a1d189e50 Replace rtc::Optional with absl::optional in rtc_base
This is a no-op change because rtc::Optional is an alias to absl::optional

This CL generated by running script with parameter 'rtc_base'
Then manually fix where Optional was used without rtc prefix (patchset#3)

find $@ -type f \( -name \*.h -o -name \*.cc \) \
-exec sed -i 's|rtc::Optional|absl::optional|g' {} \+ \
-exec sed -i 's|rtc::nullopt|absl::nullopt|g' {} \+ \
-exec sed -i 's|#include "api/optional.h"|#include "absl/types/optional.h"|' {} \+

find $@ -type f -name BUILD.gn \
-exec sed -r -i 's|"[\./api]*:optional"|"//third_party/abseil-cpp/absl/types:optional"|' {} \+;

git cl format

Bug: webrtc:9078
Change-Id: I825f80cc8089747876ba6316d9e7c30e05716974
Reviewed-on: https://webrtc-review.googlesource.com/84585
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23700}
2018-06-21 11:23:40 +00:00

52 lines
1.6 KiB
C++

/*
* Copyright 2017 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "rtc_base/string_to_number.h"
#include <cerrno>
#include <cstdlib>
#include "rtc_base/checks.h"
namespace rtc {
namespace string_to_number_internal {
absl::optional<signed_type> ParseSigned(const char* str, int base) {
RTC_DCHECK(str);
if (isdigit(str[0]) || str[0] == '-') {
char* end = nullptr;
errno = 0;
const signed_type value = std::strtoll(str, &end, base);
if (end && *end == '\0' && errno == 0) {
return value;
}
}
return absl::nullopt;
}
absl::optional<unsigned_type> ParseUnsigned(const char* str, int base) {
RTC_DCHECK(str);
if (isdigit(str[0]) || str[0] == '-') {
// Explicitly discard negative values. std::strtoull parsing causes unsigned
// wraparound. We cannot just reject values that start with -, though, since
// -0 is perfectly fine, as is -0000000000000000000000000000000.
const bool is_negative = str[0] == '-';
char* end = nullptr;
errno = 0;
const unsigned_type value = std::strtoull(str, &end, base);
if (end && *end == '\0' && errno == 0 && (value == 0 || !is_negative)) {
return value;
}
}
return absl::nullopt;
}
} // namespace string_to_number_internal
} // namespace rtc