mirror of
https://github.com/openharmony/ark_runtime_core.git
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wanyanglan
14c9021696
Signed-off-by: wanyanglan <wanyanglan1@huawei.com> Change-Id: I2564094cef9c6c41263e37faf9ffbbec14223dc7
113 lines
3.1 KiB
C++
113 lines
3.1 KiB
C++
/*
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* Copyright (c) 2021 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef PANDA_LIBPANDABASE_UTILS_STRING_HELPERS_H_
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#define PANDA_LIBPANDABASE_UTILS_STRING_HELPERS_H_
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#include <securec.h>
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#include <cstdarg>
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#include <algorithm>
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#include <array>
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#include <string>
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#include <cerrno>
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#include <cstdlib>
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#include <limits>
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#include <type_traits>
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namespace panda::helpers::string {
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inline std::string Vformat(const char *fmt, va_list args)
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{
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static constexpr size_t SIZE = 1024;
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std::string result;
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result.resize(SIZE);
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bool is_truncated = true;
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while (is_truncated) {
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va_list copy_args;
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va_copy(copy_args, args);
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int r = vsnprintf_truncated_s(result.data(), result.size() + 1, fmt, copy_args);
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va_end(copy_args);
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if (r < 0) {
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return "";
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}
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is_truncated = static_cast<size_t>(r) == result.size();
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result.resize(result.size() * 2U);
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}
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result.erase(std::find(result.begin(), result.end(), '\0'), result.end());
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return result;
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}
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// NOLINTNEXTLINE(cert-dcl50-cpp)
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inline std::string Format(const char *fmt, ...)
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{
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va_list args;
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va_start(args, fmt); // NOLINT(cppcoreguidelines-pro-type-vararg)
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std::string result = Vformat(fmt, args);
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va_end(args);
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return result;
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}
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template <typename T>
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bool ParseInt(const char *str, T *num, T min = std::numeric_limits<T>::min(), T max = std::numeric_limits<T>::max())
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{
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static_assert(std::is_signed<T>::value, "it can't parse unsigned types");
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while (isspace(*str)) {
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// NOLINTNEXTLINE(cppcoreguidelines-pro-bounds-pointer-arithmetic)
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str++;
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}
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constexpr size_t BASE16 = 16;
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constexpr size_t BASE10 = 10;
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// NOLINTNEXTLINE(cppcoreguidelines-pro-bounds-pointer-arithmetic)
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int base = (str[0] == '0' && (str[1] == 'x' || str[1] == 'X')) ? BASE16 : BASE10;
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errno = 0;
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char *end = nullptr;
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// NOLINTNEXTLINE(google-runtime-int)
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long long int result = strtoll(str, &end, base);
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if (str == end || *end != '\0') {
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errno = EINVAL;
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return false;
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}
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if (result < min || result > max) {
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errno = ERANGE;
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return false;
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}
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if (num != nullptr) {
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*num = static_cast<T>(result);
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}
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return true;
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}
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template <typename T>
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bool ParseInt(const std::string &str, T *num, T min = std::numeric_limits<T>::min(),
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T max = std::numeric_limits<T>::max())
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{
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return ParseInt(str.c_str(), num, min, max);
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}
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} // namespace panda::helpers::string
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#endif // PANDA_LIBPANDABASE_UTILS_STRING_HELPERS_H_
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