93 lines
2.6 KiB
C++
93 lines
2.6 KiB
C++
///
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/// \file enoent.cc
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/// \author kyle
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/// \created 2023-10-11
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/// \brief basic file system checks
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///
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/// \section COPYRIGHT
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/// Copyright 2023 K. Isom <kyle@imap.cc>
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///
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/// Permission to use, copy, modify, and/or distribute this software for
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/// any purpose with or without fee is hereby granted, provided that the
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/// above copyright notice and this permission notice appear in all copies.
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///
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/// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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/// WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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/// WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR
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/// BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
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/// OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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/// WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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/// ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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/// SOFTWARE.
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///
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#include <algorithm>
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#include <iostream>
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#include <iterator>
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#include <fstream>
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#include <filesystem>
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#include <vector>
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using namespace std;
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int
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main()
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{
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namespace fs = std::filesystem;
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std::string input = "ohai\n";
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std::vector<uint8_t> buffer(input.begin(), input.end());
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auto f = fs::path("ENOENT2");
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if (fs::exists(f)) {
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std::cout << "[+] the file exists\n";
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std::cout << "\tfile size: " << fs::file_size(f) << "\n";
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} else {
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std::cout << "the file does not exist\n";
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}
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cout << "[+] attempting to open the file.\n";
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ofstream handle(f, std::ios::in | std::ios::out | std::ios::trunc);
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if (!handle.good()) {
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cerr << "[!] file operation failed\n";
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cerr << "\tfile fail: " << handle.fail() << "\n";
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cerr << "\t file eof: " << handle.eof() << "\n";
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cerr << "\t file bad: " << handle.bad() << "\n";
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return 1;
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}
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if (fs::exists(f)) {
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std::cout << "[+] the file exists\n";
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std::cout << "\tfile size: " << fs::file_size(f) << "\n";
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} else {
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std::cout << "the file does not exist\n";
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}
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handle.flush();
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if (fs::exists(f)) {
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std::cout << "[+] the file exists\n";
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std::cout << "\tfile size: " << fs::file_size(f) << "\n";
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} else {
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std::cout << "the file does not exist\n";
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}
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cout << "[+] file open successfully. attempting to write.\n";
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handle << "Hello, world.\r\n";
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if (fs::exists(f)) {
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std::cout << "\tfile size: " << fs::file_size(f) << "\n";
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}
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cout << "[+] attempting to write the vector to file.\n";
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std::copy(buffer.begin(), buffer.end(), std::ostream_iterator<uint8_t>(handle, ""));
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cout << "[+] closing the file.\n";
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handle.close();
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if (fs::exists(f)) {
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std::cout << "\tfile size: " << fs::file_size(f) << "\n";
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}
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return 0;
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} |