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This is a replacement for absl::StrCat and allows us to remove absl/str_cat.h from the absl allowlist. In several cases, it's easier just to use StringPrintf instead. Also, this groups type traits into a shared file for ease of re-use. Bug: 158433927 Change-Id: Ib77ecbd9b29f6701819e3618e86de4ea34bc6cdc Reviewed-on: https://chromium-review.googlesource.com/c/openscreen/+/5794373 Commit-Queue: Mark Foltz <mfoltz@chromium.org> Reviewed-by: Jordan Bayles <jophba@chromium.org>
33 lines
1.0 KiB
C++
33 lines
1.0 KiB
C++
// Copyright 2024 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef UTIL_STRING_PARSE_H_
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#define UTIL_STRING_PARSE_H_
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#include <charconv>
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#include <optional>
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#include <string_view>
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#include <system_error>
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#include "platform/base/type_util.h"
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namespace openscreen::string_parse {
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// Parses `number` into the numeric type `result` and returns true if
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// successful. `number` must be an ASCII representation of an integer or
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// floating point value, and `result` must be compatible with the resulting
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// value. If `number` cannot be parsed, then returns false.
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template <typename T, typename = internal::EnableIfArithmetic<T>>
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bool ParseAsciiNumber(std::string_view number, T& result) {
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if (number.empty())
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return false;
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auto [unused_ptr, error_code] =
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std::from_chars(number.data(), &number.back() + 1, result);
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return error_code == std::errc();
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}
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} // namespace openscreen::string_parse
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#endif // UTIL_STRING_PARSE_H_
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