mirror of
https://github.com/CLIUtils/CLI11.git
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133 lines
4.1 KiB
C++
133 lines
4.1 KiB
C++
// Copyright (c) 2017-2025, University of Cincinnati, developed by Henry Schreiner
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// under NSF AWARD 1414736 and by the respective contributors.
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// All rights reserved.
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//
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// SPDX-License-Identifier: BSD-3-Clause
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#pragma once
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#ifdef CLI11_SINGLE_FILE
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#include "CLI11.hpp"
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#else
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#include "CLI/CLI.hpp"
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#endif
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#include "catch.hpp"
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#include <array>
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#include <fstream>
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#include <iomanip>
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#include <iostream>
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#include <string>
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#include <utility>
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#include <vector>
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using input_t = std::vector<std::string>;
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class TApp {
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public:
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CLI::App app{"My Test Program"};
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input_t args{};
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virtual ~TApp() = default;
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void run() {
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// It is okay to re-parse - clear is called automatically before a parse.
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input_t newargs = args;
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std::reverse(std::begin(newargs), std::end(newargs));
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app.parse(newargs);
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}
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};
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CLI11_INLINE int fileClear(const std::string &name) { return std::remove(name.c_str()); }
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class TempFile {
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std::string _name{};
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public:
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explicit TempFile(std::string name) : _name(std::move(name)) {
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if(!CLI::NonexistentPath(_name).empty())
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throw std::runtime_error(_name);
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}
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~TempFile() {
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std::remove(_name.c_str()); // Doesn't matter if returns 0 or not
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}
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operator const std::string &() const { return _name; } // NOLINT(google-explicit-constructor)
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CLI11_NODISCARD const char *c_str() const { return _name.c_str(); }
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};
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inline void put_env(std::string name, std::string value) {
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#ifdef _WIN32
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_putenv_s(name.c_str(), value.c_str());
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#else
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setenv(name.c_str(), value.c_str(), 1);
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#endif
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}
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inline void unset_env(std::string name) {
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#ifdef _WIN32
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_putenv_s(name.c_str(), "");
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#else
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unsetenv(name.c_str());
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#endif
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}
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/// these are provided for compatibility with the char8_t for C++20 that breaks stuff
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CLI11_INLINE std::string from_u8string(const std::string &s) { return s; }
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CLI11_INLINE std::string from_u8string(std::string &&s) { return std::move(s); }
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#if defined(__cpp_lib_char8_t)
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CLI11_INLINE std::string from_u8string(const std::u8string &s) { return std::string(s.begin(), s.end()); }
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#elif defined(__cpp_char8_t)
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CLI11_INLINE std::string from_u8string(const char8_t *s) { return std::string(reinterpret_cast<const char *>(s)); }
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#endif
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CLI11_INLINE void check_identical_files(const char *path1, const char *path2) {
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std::string err1 = CLI::ExistingFile(path1);
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if(!err1.empty()) {
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FAIL("Could not open " << path1 << ": " << err1);
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}
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std::string err2 = CLI::ExistingFile(path2);
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if(!err2.empty()) {
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FAIL("Could not open " << path2 << ": " << err2);
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}
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// open files at the end to compare size first
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std::ifstream file1(path1, std::ifstream::ate | std::ifstream::binary);
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std::ifstream file2(path2, std::ifstream::ate | std::ifstream::binary);
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if(!file1.good()) {
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FAIL("File " << path1 << " is corrupted");
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}
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if(!file2.good()) {
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FAIL("File " << path2 << " is corrupted");
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}
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if(file1.tellg() != file2.tellg()) {
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FAIL("Different file sizes:\n " << file1.tellg() << " bytes in " << path1 << "\n " << file2.tellg()
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<< " bytes in " << path2);
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}
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// rewind files
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file1.seekg(0);
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file2.seekg(0);
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std::array<uint8_t, 10240> buffer1;
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std::array<uint8_t, 10240> buffer2;
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for(size_t ibuffer = 0; file1.good(); ++ibuffer) {
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// Flawfinder: ignore
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file1.read(reinterpret_cast<char *>(buffer1.data()), static_cast<std::streamsize>(buffer1.size()));
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// Flawfinder: ignore
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file2.read(reinterpret_cast<char *>(buffer2.data()), static_cast<std::streamsize>(buffer2.size()));
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for(size_t i = 0; i < static_cast<size_t>(file1.gcount()); ++i) {
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if(buffer1[i] != buffer2[i]) {
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FAIL(std::hex << std::setfill('0') << "Different bytes at position " << (ibuffer * 10240 + i) << ":\n "
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<< "0x" << std::setw(2) << static_cast<int>(buffer1[i]) << " in " << path1 << "\n "
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<< "0x" << std::setw(2) << static_cast<int>(buffer2[i]) << " in " << path2);
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}
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}
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}
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}
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