bb547203bf
In order to eliminate the WebRTC Subtree mirror in Chromium, WebRTC is moving the content of the src/webrtc directory up to the src/ directory. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true TBR=tommi@webrtc.org Bug: chromium:611808 Change-Id: Iac59c5b51b950f174119565bac87955a7994bc38 Reviewed-on: https://webrtc-review.googlesource.com/1560 Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Henrik Kjellander <kjellander@webrtc.org> Cr-Commit-Position: refs/heads/master@{#19845}
51 lines
1.6 KiB
C++
51 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 <cerrno>
|
|
#include <cstdlib>
|
|
|
|
#include "webrtc/rtc_base/string_to_number.h"
|
|
|
|
namespace rtc {
|
|
namespace string_to_number_internal {
|
|
|
|
rtc::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 rtc::Optional<signed_type>(value);
|
|
}
|
|
}
|
|
return rtc::Optional<signed_type>();
|
|
}
|
|
|
|
rtc::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 rtc::Optional<unsigned_type>(value);
|
|
}
|
|
}
|
|
return rtc::Optional<unsigned_type>();
|
|
}
|
|
|
|
} // namespace string_to_number_internal
|
|
} // namespace rtc
|