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78 lines
2.0 KiB
78 lines
2.0 KiB
#pragma once |
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#include <cstdint> |
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#if defined(_WIN64) || defined(_WIN32) |
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// Suppress definitions of `min` and `max` macros by <windows.h>: |
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#define NOMINMAX 1 |
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#include <windows.h> |
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#endif |
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#if _POSIX_C_SOURCE >= 200112L || defined(_BSD_SOURCE) || defined(__APPLE__) |
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#include <unistd.h> |
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#else |
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#include <cstdio> |
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#endif |
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namespace dvl { |
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inline bool FileExists(const char *path) |
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{ |
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#if _POSIX_C_SOURCE >= 200112L || defined(_BSD_SOURCE) || defined(__APPLE__) |
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return ::access(path, F_OK) == 0; |
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#else |
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auto *file = std::fopen(path, "rb"); |
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if (file == nullptr) return false; |
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std::fclose(file); |
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return true; |
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#endif |
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} |
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inline bool ResizeFile(const char *path, std::uint32_t size) |
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{ |
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#if defined(_WIN64) || defined(_WIN32) |
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LARGE_INTEGER lisize; |
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lisize.QuadPart = static_cast<LONGLONG>(size); |
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if (lisize.QuadPart < 0) { |
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return false; |
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} |
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int path_utf16_size = MultiByteToWideChar(CP_UTF8, 0, path, -1, nullptr, 0); |
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auto path_utf16 = new wchar_t[path_utf16_size]; |
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if (MultiByteToWideChar(CP_UTF8, 0, path, -1, path_utf16, path_utf16_size) != path_utf16_size) { |
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delete[] path_utf16; |
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return false; |
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} |
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HANDLE file = ::CreateFileW(path_utf16, GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL); |
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delete[] path_utf16; |
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if (file == INVALID_HANDLE_VALUE) { |
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return false; |
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} else if (::SetFilePointerEx(file, lisize, NULL, FILE_BEGIN) == 0 || ::SetEndOfFile(file) == 0) { |
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::CloseHandle(file); |
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return false; |
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} |
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::CloseHandle(file); |
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return true; |
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#elif _POSIX_C_SOURCE >= 200112L || defined(_BSD_SOURCE) || defined(__APPLE__) |
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return ::truncate(path, static_cast<off_t>(size)) == 0; |
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#else |
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static_assert(false, "truncate not implemented for the current platform"); |
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#endif |
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} |
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inline void RemoveFile(char *lpFileName) |
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{ |
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char name[DVL_MAX_PATH]; |
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TranslateFileName(name, sizeof(name), lpFileName); |
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FILE *f = fopen(name, "r+"); |
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if (f) { |
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fclose(f); |
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remove(name); |
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f = NULL; |
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SDL_Log("Removed file: %s", name); |
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} else { |
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SDL_Log("Failed to remove file: %s", name); |
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} |
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} |
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} // namespace dvl
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