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Niels Lohmann
fa9741f0ce
- Drop the unused reversed-order operator!= overload from utils::istreambuf_sentinel (only iterator != sentinel is ever evaluated) and name the remaining friend's sentinel parameter, fixing hicpp-named-parameter/readability-named-parameter. - Mark the istreambuf_iterator first/last helper variable const in the five binary-format sentinel tests, fixing misc-const-correctness. Signed-off-by: Niels Lohmann <mail@nlohmann.me>
47 lines
1.5 KiB
C++
47 lines
1.5 KiB
C++
// __ _____ _____ _____
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// __| | __| | | | JSON for Modern C++ (supporting code)
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// | | |__ | | | | | | version 3.12.0
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// |_____|_____|_____|_|___| https://github.com/nlohmann/json
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//
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// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
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// SPDX-License-Identifier: MIT
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#pragma once
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#include <cstdint> // uint8_t
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#include <fstream> // ifstream, istreambuf_iterator, ios
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#include <vector> // vector
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namespace utils
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{
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inline std::vector<std::uint8_t> read_binary_file(const std::string& filename)
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{
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std::ifstream file(filename, std::ios::binary);
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file.unsetf(std::ios::skipws);
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file.seekg(0, std::ios::end);
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const auto size = file.tellg();
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file.seekg(0, std::ios::beg);
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std::vector<std::uint8_t> byte_vector;
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byte_vector.reserve(static_cast<std::size_t>(size));
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byte_vector.insert(byte_vector.begin(), std::istream_iterator<std::uint8_t>(file), std::istream_iterator<std::uint8_t>());
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return byte_vector;
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}
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// sentinel for istreambuf_iterator; compares != true until EOF is reached
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// lets tests read a file directly via the new iterator+sentinel overloads
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// instead of buffering the whole file into a vector first.
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// Only the iterator-first direction (it != sentinel) is ever evaluated by
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// the library's parse loop, so no reversed-order overload is needed.
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struct istreambuf_sentinel
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{
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friend bool operator!=(const std::istreambuf_iterator<char>& it, const istreambuf_sentinel& /*unused*/) noexcept
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{
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return it != std::istreambuf_iterator<char>();
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}
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};
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} // namespace utils
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