5329834376
Fix CreateFullPath to have its intended previous behavior (whatever that was), and deprecate it in favor of the new CreateDirs function. Unlike CreateDir, CreateDirs is marked as [[nodiscard]] to avoid new code ignoring its result value.
797 lines
22 KiB
C++
797 lines
22 KiB
C++
// Copyright 2013 Dolphin Emulator Project / 2014 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <array>
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#include <filesystem>
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#include <limits>
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#include <memory>
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#include <sstream>
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#include <unordered_map>
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#include "common/assert.h"
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#include "common/common_funcs.h"
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#include "common/common_paths.h"
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#include "common/file_util.h"
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#include "common/logging/log.h"
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#ifdef _WIN32
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#include <windows.h>
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// windows.h needs to be included before other windows headers
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#include <direct.h> // getcwd
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#include <io.h>
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#include <shellapi.h>
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#include <shlobj.h> // for SHGetFolderPath
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#include <tchar.h>
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#include "common/string_util.h"
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#ifdef _MSC_VER
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// 64 bit offsets for MSVC
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#define fseeko _fseeki64
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#define ftello _ftelli64
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#define fileno _fileno
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#endif
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// 64 bit offsets for MSVC and MinGW. MinGW also needs this for using _wstat64
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#define stat _stat64
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#define fstat _fstat64
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#else
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#ifdef __APPLE__
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#include <sys/param.h>
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#endif
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#include <cctype>
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#include <cerrno>
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#include <cstdlib>
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#include <cstring>
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#include <dirent.h>
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#include <pwd.h>
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#include <unistd.h>
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#endif
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#if defined(__APPLE__)
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// CFURL contains __attribute__ directives that gcc does not know how to parse, so we need to just
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// ignore them if we're not using clang. The macro is only used to prevent linking against
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// functions that don't exist on older versions of macOS, and the worst case scenario is a linker
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// error, so this is perfectly safe, just inconvenient.
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#ifndef __clang__
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#define availability(...)
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#endif
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#include <CoreFoundation/CFBundle.h>
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#include <CoreFoundation/CFString.h>
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#include <CoreFoundation/CFURL.h>
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#ifdef availability
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#undef availability
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#endif
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#endif
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#include <algorithm>
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#include <sys/stat.h>
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namespace Common::FS {
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namespace fs = std::filesystem;
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bool Exists(const fs::path& path) {
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std::error_code ec;
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return fs::exists(path, ec);
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}
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bool IsDirectory(const fs::path& path) {
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std::error_code ec;
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return fs::is_directory(path, ec);
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}
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bool Delete(const fs::path& path) {
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LOG_TRACE(Common_Filesystem, "file {}", path.string());
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// Return true because we care about the file no
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// being there, not the actual delete.
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if (!Exists(path)) {
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LOG_DEBUG(Common_Filesystem, "{} does not exist", path.string());
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return true;
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}
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std::error_code ec;
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return fs::remove(path, ec);
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}
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bool CreateDir(const fs::path& path) {
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LOG_TRACE(Common_Filesystem, "directory {}", path.string());
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if (Exists(path)) {
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LOG_DEBUG(Common_Filesystem, "path exists {}", path.string());
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return true;
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}
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std::error_code ec;
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const bool success = fs::create_directory(path, ec);
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if (!success) {
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LOG_ERROR(Common_Filesystem, "Unable to create directory: {}", ec.message());
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return false;
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}
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return true;
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}
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bool CreateDirs(const fs::path& path) {
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LOG_TRACE(Common_Filesystem, "path {}", path.string());
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if (Exists(path)) {
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LOG_DEBUG(Common_Filesystem, "path exists {}", path.string());
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return true;
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}
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std::error_code ec;
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const bool success = fs::create_directories(path, ec);
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if (!success) {
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LOG_ERROR(Common_Filesystem, "Unable to create directories: {}", ec.message());
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return false;
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}
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return true;
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}
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bool CreateFullPath(const fs::path& path) {
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LOG_TRACE(Common_Filesystem, "path {}", path);
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// Removes trailing slashes and turns any '\' into '/'
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const auto new_path = SanitizePath(path.string(), DirectorySeparator::ForwardSlash);
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if (new_path.rfind('.') == std::string::npos) {
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// The path is a directory
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return CreateDirs(new_path);
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} else {
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// The path is a file
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// Creates directory preceding the last '/'
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return CreateDirs(new_path.substr(0, new_path.rfind('/')));
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}
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}
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bool Rename(const fs::path& src, const fs::path& dst) {
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LOG_TRACE(Common_Filesystem, "{} --> {}", src.string(), dst.string());
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std::error_code ec;
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fs::rename(src, dst, ec);
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if (ec) {
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LOG_ERROR(Common_Filesystem, "Unable to rename file from {} to {}: {}", src.string(),
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dst.string(), ec.message());
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return false;
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}
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return true;
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}
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bool Copy(const fs::path& src, const fs::path& dst) {
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LOG_TRACE(Common_Filesystem, "{} --> {}", src.string(), dst.string());
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std::error_code ec;
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const bool success = fs::copy_file(src, dst, fs::copy_options::overwrite_existing, ec);
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if (!success) {
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LOG_ERROR(Common_Filesystem, "Unable to copy file {} to {}: {}", src.string(), dst.string(),
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ec.message());
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return false;
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}
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return true;
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}
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u64 GetSize(const fs::path& path) {
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std::error_code ec;
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const auto size = fs::file_size(path, ec);
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if (ec) {
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LOG_ERROR(Common_Filesystem, "Unable to retrieve file size ({}): {}", path.string(),
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ec.message());
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return 0;
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}
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return size;
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}
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u64 GetSize(FILE* f) {
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// can't use off_t here because it can be 32-bit
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u64 pos = ftello(f);
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if (fseeko(f, 0, SEEK_END) != 0) {
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LOG_ERROR(Common_Filesystem, "GetSize: seek failed {}: {}", fmt::ptr(f), GetLastErrorMsg());
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return 0;
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}
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u64 size = ftello(f);
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if ((size != pos) && (fseeko(f, pos, SEEK_SET) != 0)) {
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LOG_ERROR(Common_Filesystem, "GetSize: seek failed {}: {}", fmt::ptr(f), GetLastErrorMsg());
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return 0;
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}
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return size;
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}
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bool CreateEmptyFile(const std::string& filename) {
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LOG_TRACE(Common_Filesystem, "{}", filename);
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if (!IOFile(filename, "wb").IsOpen()) {
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LOG_ERROR(Common_Filesystem, "failed {}: {}", filename, GetLastErrorMsg());
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return false;
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}
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return true;
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}
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bool ForeachDirectoryEntry(u64* num_entries_out, const std::string& directory,
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DirectoryEntryCallable callback) {
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LOG_TRACE(Common_Filesystem, "directory {}", directory);
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// How many files + directories we found
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u64 found_entries = 0;
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// Save the status of callback function
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bool callback_error = false;
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#ifdef _WIN32
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// Find the first file in the directory.
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WIN32_FIND_DATAW ffd;
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HANDLE handle_find = FindFirstFileW(Common::UTF8ToUTF16W(directory + "\\*").c_str(), &ffd);
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if (handle_find == INVALID_HANDLE_VALUE) {
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FindClose(handle_find);
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return false;
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}
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// windows loop
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do {
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const std::string virtual_name(Common::UTF16ToUTF8(ffd.cFileName));
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#else
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DIR* dirp = opendir(directory.c_str());
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if (!dirp)
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return false;
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// non windows loop
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while (struct dirent* result = readdir(dirp)) {
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const std::string virtual_name(result->d_name);
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#endif
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if (virtual_name == "." || virtual_name == "..")
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continue;
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u64 ret_entries = 0;
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if (!callback(&ret_entries, directory, virtual_name)) {
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callback_error = true;
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break;
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}
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found_entries += ret_entries;
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#ifdef _WIN32
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} while (FindNextFileW(handle_find, &ffd) != 0);
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FindClose(handle_find);
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#else
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}
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closedir(dirp);
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#endif
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if (callback_error)
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return false;
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// num_entries_out is allowed to be specified nullptr, in which case we shouldn't try to set it
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if (num_entries_out != nullptr)
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*num_entries_out = found_entries;
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return true;
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}
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bool DeleteDirRecursively(const fs::path& path) {
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std::error_code ec;
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fs::remove_all(path, ec);
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if (ec) {
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LOG_ERROR(Common_Filesystem, "Unable to completely delete directory {}: {}", path.string(),
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ec.message());
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return false;
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}
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return true;
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}
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void CopyDir(const fs::path& src, const fs::path& dst) {
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constexpr auto copy_flags = fs::copy_options::skip_existing | fs::copy_options::recursive;
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std::error_code ec;
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fs::copy(src, dst, copy_flags, ec);
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if (ec) {
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LOG_ERROR(Common_Filesystem, "Error copying directory {} to {}: {}", src.string(),
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dst.string(), ec.message());
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return;
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}
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LOG_TRACE(Common_Filesystem, "Successfully copied directory.");
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}
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std::optional<fs::path> GetCurrentDir() {
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std::error_code ec;
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auto path = fs::current_path(ec);
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if (ec) {
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LOG_ERROR(Common_Filesystem, "Unable to retrieve current working directory: {}",
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ec.message());
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return std::nullopt;
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}
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return {std::move(path)};
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}
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bool SetCurrentDir(const fs::path& path) {
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std::error_code ec;
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fs::current_path(path, ec);
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if (ec) {
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LOG_ERROR(Common_Filesystem, "Unable to set {} as working directory: {}", path.string(),
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ec.message());
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return false;
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}
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return true;
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}
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#if defined(__APPLE__)
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std::string GetBundleDirectory() {
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CFURLRef BundleRef;
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char AppBundlePath[MAXPATHLEN];
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// Get the main bundle for the app
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BundleRef = CFBundleCopyBundleURL(CFBundleGetMainBundle());
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CFStringRef BundlePath = CFURLCopyFileSystemPath(BundleRef, kCFURLPOSIXPathStyle);
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CFStringGetFileSystemRepresentation(BundlePath, AppBundlePath, sizeof(AppBundlePath));
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CFRelease(BundleRef);
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CFRelease(BundlePath);
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return AppBundlePath;
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}
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#endif
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#ifdef _WIN32
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const std::string& GetExeDirectory() {
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static std::string exe_path;
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if (exe_path.empty()) {
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wchar_t wchar_exe_path[2048];
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GetModuleFileNameW(nullptr, wchar_exe_path, 2048);
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exe_path = Common::UTF16ToUTF8(wchar_exe_path);
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exe_path = exe_path.substr(0, exe_path.find_last_of('\\'));
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}
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return exe_path;
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}
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std::string AppDataRoamingDirectory() {
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PWSTR pw_local_path = nullptr;
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// Only supported by Windows Vista or later
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SHGetKnownFolderPath(FOLDERID_RoamingAppData, 0, nullptr, &pw_local_path);
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std::string local_path = Common::UTF16ToUTF8(pw_local_path);
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CoTaskMemFree(pw_local_path);
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return local_path;
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}
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#else
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/**
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* @return The user’s home directory on POSIX systems
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*/
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static const std::string& GetHomeDirectory() {
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static std::string home_path;
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if (home_path.empty()) {
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const char* envvar = getenv("HOME");
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if (envvar) {
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home_path = envvar;
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} else {
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auto pw = getpwuid(getuid());
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ASSERT_MSG(pw,
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"$HOME isn’t defined, and the current user can’t be found in /etc/passwd.");
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home_path = pw->pw_dir;
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}
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}
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return home_path;
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}
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/**
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* Follows the XDG Base Directory Specification to get a directory path
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* @param envvar The XDG environment variable to get the value from
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* @return The directory path
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* @sa http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
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*/
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static const std::string GetUserDirectory(const std::string& envvar) {
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const char* directory = getenv(envvar.c_str());
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std::string user_dir;
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if (directory) {
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user_dir = directory;
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} else {
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std::string subdirectory;
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if (envvar == "XDG_DATA_HOME")
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subdirectory = DIR_SEP ".local" DIR_SEP "share";
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else if (envvar == "XDG_CONFIG_HOME")
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subdirectory = DIR_SEP ".config";
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else if (envvar == "XDG_CACHE_HOME")
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subdirectory = DIR_SEP ".cache";
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else
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ASSERT_MSG(false, "Unknown XDG variable {}.", envvar);
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user_dir = GetHomeDirectory() + subdirectory;
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}
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ASSERT_MSG(!user_dir.empty(), "User directory {} mustn’t be empty.", envvar);
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ASSERT_MSG(user_dir[0] == '/', "User directory {} must be absolute.", envvar);
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return user_dir;
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}
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#endif
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std::string GetSysDirectory() {
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std::string sysDir;
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#if defined(__APPLE__)
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sysDir = GetBundleDirectory();
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sysDir += DIR_SEP;
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sysDir += SYSDATA_DIR;
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#else
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sysDir = SYSDATA_DIR;
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#endif
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sysDir += DIR_SEP;
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LOG_DEBUG(Common_Filesystem, "Setting to {}:", sysDir);
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return sysDir;
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}
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const std::string& GetUserPath(UserPath path, const std::string& new_path) {
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static std::unordered_map<UserPath, std::string> paths;
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auto& user_path = paths[UserPath::UserDir];
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// Set up all paths and files on the first run
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if (user_path.empty()) {
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#ifdef _WIN32
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user_path = GetExeDirectory() + DIR_SEP USERDATA_DIR DIR_SEP;
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if (!IsDirectory(user_path)) {
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user_path = AppDataRoamingDirectory() + DIR_SEP EMU_DATA_DIR DIR_SEP;
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} else {
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LOG_INFO(Common_Filesystem, "Using the local user directory");
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}
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paths.emplace(UserPath::ConfigDir, user_path + CONFIG_DIR DIR_SEP);
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paths.emplace(UserPath::CacheDir, user_path + CACHE_DIR DIR_SEP);
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#else
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if (Exists(ROOT_DIR DIR_SEP USERDATA_DIR)) {
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user_path = ROOT_DIR DIR_SEP USERDATA_DIR DIR_SEP;
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paths.emplace(UserPath::ConfigDir, user_path + CONFIG_DIR DIR_SEP);
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paths.emplace(UserPath::CacheDir, user_path + CACHE_DIR DIR_SEP);
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} else {
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std::string data_dir = GetUserDirectory("XDG_DATA_HOME");
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std::string config_dir = GetUserDirectory("XDG_CONFIG_HOME");
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std::string cache_dir = GetUserDirectory("XDG_CACHE_HOME");
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user_path = data_dir + DIR_SEP EMU_DATA_DIR DIR_SEP;
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paths.emplace(UserPath::ConfigDir, config_dir + DIR_SEP EMU_DATA_DIR DIR_SEP);
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paths.emplace(UserPath::CacheDir, cache_dir + DIR_SEP EMU_DATA_DIR DIR_SEP);
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}
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#endif
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paths.emplace(UserPath::SDMCDir, user_path + SDMC_DIR DIR_SEP);
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paths.emplace(UserPath::NANDDir, user_path + NAND_DIR DIR_SEP);
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paths.emplace(UserPath::LoadDir, user_path + LOAD_DIR DIR_SEP);
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paths.emplace(UserPath::DumpDir, user_path + DUMP_DIR DIR_SEP);
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paths.emplace(UserPath::ScreenshotsDir, user_path + SCREENSHOTS_DIR DIR_SEP);
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paths.emplace(UserPath::ShaderDir, user_path + SHADER_DIR DIR_SEP);
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paths.emplace(UserPath::SysDataDir, user_path + SYSDATA_DIR DIR_SEP);
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paths.emplace(UserPath::KeysDir, user_path + KEYS_DIR DIR_SEP);
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// TODO: Put the logs in a better location for each OS
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paths.emplace(UserPath::LogDir, user_path + LOG_DIR DIR_SEP);
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}
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if (!new_path.empty()) {
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if (!IsDirectory(new_path)) {
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LOG_ERROR(Common_Filesystem, "Invalid path specified {}", new_path);
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return paths[path];
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} else {
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paths[path] = new_path;
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}
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switch (path) {
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case UserPath::RootDir:
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user_path = paths[UserPath::RootDir] + DIR_SEP;
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break;
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case UserPath::UserDir:
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user_path = paths[UserPath::RootDir] + DIR_SEP;
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paths[UserPath::ConfigDir] = user_path + CONFIG_DIR DIR_SEP;
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paths[UserPath::CacheDir] = user_path + CACHE_DIR DIR_SEP;
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paths[UserPath::SDMCDir] = user_path + SDMC_DIR DIR_SEP;
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paths[UserPath::NANDDir] = user_path + NAND_DIR DIR_SEP;
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break;
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default:
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break;
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}
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}
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return paths[path];
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}
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std::string GetHactoolConfigurationPath() {
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#ifdef _WIN32
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PWSTR pw_local_path = nullptr;
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if (SHGetKnownFolderPath(FOLDERID_Profile, 0, nullptr, &pw_local_path) != S_OK)
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return "";
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std::string local_path = Common::UTF16ToUTF8(pw_local_path);
|
||
CoTaskMemFree(pw_local_path);
|
||
return local_path + "\\.switch";
|
||
#else
|
||
return GetHomeDirectory() + "/.switch";
|
||
#endif
|
||
}
|
||
|
||
std::string GetNANDRegistrationDir(bool system) {
|
||
if (system)
|
||
return GetUserPath(UserPath::NANDDir) + "system/Contents/registered/";
|
||
return GetUserPath(UserPath::NANDDir) + "user/Contents/registered/";
|
||
}
|
||
|
||
std::size_t WriteStringToFile(bool text_file, const std::string& filename, std::string_view str) {
|
||
return IOFile(filename, text_file ? "w" : "wb").WriteString(str);
|
||
}
|
||
|
||
std::size_t ReadFileToString(bool text_file, const std::string& filename, std::string& str) {
|
||
IOFile file(filename, text_file ? "r" : "rb");
|
||
|
||
if (!file.IsOpen())
|
||
return 0;
|
||
|
||
str.resize(static_cast<u32>(file.GetSize()));
|
||
return file.ReadArray(&str[0], str.size());
|
||
}
|
||
|
||
void SplitFilename83(const std::string& filename, std::array<char, 9>& short_name,
|
||
std::array<char, 4>& extension) {
|
||
static constexpr std::string_view forbidden_characters = ".\"/\\[]:;=, ";
|
||
|
||
// On a FAT32 partition, 8.3 names are stored as a 11 bytes array, filled with spaces.
|
||
short_name = {{' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', '\0'}};
|
||
extension = {{' ', ' ', ' ', '\0'}};
|
||
|
||
auto point = filename.rfind('.');
|
||
if (point == filename.size() - 1) {
|
||
point = filename.rfind('.', point);
|
||
}
|
||
|
||
// Get short name.
|
||
int j = 0;
|
||
for (char letter : filename.substr(0, point)) {
|
||
if (forbidden_characters.find(letter, 0) != std::string::npos) {
|
||
continue;
|
||
}
|
||
if (j == 8) {
|
||
// TODO(Link Mauve): also do that for filenames containing a space.
|
||
// TODO(Link Mauve): handle multiple files having the same short name.
|
||
short_name[6] = '~';
|
||
short_name[7] = '1';
|
||
break;
|
||
}
|
||
short_name[j++] = static_cast<char>(std::toupper(letter));
|
||
}
|
||
|
||
// Get extension.
|
||
if (point != std::string::npos) {
|
||
j = 0;
|
||
for (char letter : filename.substr(point + 1, 3)) {
|
||
extension[j++] = static_cast<char>(std::toupper(letter));
|
||
}
|
||
}
|
||
}
|
||
|
||
std::vector<std::string> SplitPathComponents(std::string_view filename) {
|
||
std::string copy(filename);
|
||
std::replace(copy.begin(), copy.end(), '\\', '/');
|
||
std::vector<std::string> out;
|
||
|
||
std::stringstream stream(copy);
|
||
std::string item;
|
||
while (std::getline(stream, item, '/')) {
|
||
out.push_back(std::move(item));
|
||
}
|
||
|
||
return out;
|
||
}
|
||
|
||
std::string_view GetParentPath(std::string_view path) {
|
||
const auto name_bck_index = path.rfind('\\');
|
||
const auto name_fwd_index = path.rfind('/');
|
||
std::size_t name_index;
|
||
|
||
if (name_bck_index == std::string_view::npos || name_fwd_index == std::string_view::npos) {
|
||
name_index = std::min(name_bck_index, name_fwd_index);
|
||
} else {
|
||
name_index = std::max(name_bck_index, name_fwd_index);
|
||
}
|
||
|
||
return path.substr(0, name_index);
|
||
}
|
||
|
||
std::string_view GetPathWithoutTop(std::string_view path) {
|
||
if (path.empty()) {
|
||
return path;
|
||
}
|
||
|
||
while (path[0] == '\\' || path[0] == '/') {
|
||
path.remove_prefix(1);
|
||
if (path.empty()) {
|
||
return path;
|
||
}
|
||
}
|
||
|
||
const auto name_bck_index = path.find('\\');
|
||
const auto name_fwd_index = path.find('/');
|
||
return path.substr(std::min(name_bck_index, name_fwd_index) + 1);
|
||
}
|
||
|
||
std::string_view GetFilename(std::string_view path) {
|
||
const auto name_index = path.find_last_of("\\/");
|
||
|
||
if (name_index == std::string_view::npos) {
|
||
return {};
|
||
}
|
||
|
||
return path.substr(name_index + 1);
|
||
}
|
||
|
||
std::string_view GetExtensionFromFilename(std::string_view name) {
|
||
const std::size_t index = name.rfind('.');
|
||
|
||
if (index == std::string_view::npos) {
|
||
return {};
|
||
}
|
||
|
||
return name.substr(index + 1);
|
||
}
|
||
|
||
std::string_view RemoveTrailingSlash(std::string_view path) {
|
||
if (path.empty()) {
|
||
return path;
|
||
}
|
||
|
||
if (path.back() == '\\' || path.back() == '/') {
|
||
path.remove_suffix(1);
|
||
return path;
|
||
}
|
||
|
||
return path;
|
||
}
|
||
|
||
std::string SanitizePath(std::string_view path_, DirectorySeparator directory_separator) {
|
||
std::string path(path_);
|
||
char type1 = directory_separator == DirectorySeparator::BackwardSlash ? '/' : '\\';
|
||
char type2 = directory_separator == DirectorySeparator::BackwardSlash ? '\\' : '/';
|
||
|
||
if (directory_separator == DirectorySeparator::PlatformDefault) {
|
||
#ifdef _WIN32
|
||
type1 = '/';
|
||
type2 = '\\';
|
||
#endif
|
||
}
|
||
|
||
std::replace(path.begin(), path.end(), type1, type2);
|
||
|
||
auto start = path.begin();
|
||
#ifdef _WIN32
|
||
// allow network paths which start with a double backslash (e.g. \\server\share)
|
||
if (start != path.end())
|
||
++start;
|
||
#endif
|
||
path.erase(std::unique(start, path.end(),
|
||
[type2](char c1, char c2) { return c1 == type2 && c2 == type2; }),
|
||
path.end());
|
||
return std::string(RemoveTrailingSlash(path));
|
||
}
|
||
|
||
IOFile::IOFile() = default;
|
||
|
||
IOFile::IOFile(const std::string& filename, const char openmode[], int flags) {
|
||
void(Open(filename, openmode, flags));
|
||
}
|
||
|
||
IOFile::~IOFile() {
|
||
Close();
|
||
}
|
||
|
||
IOFile::IOFile(IOFile&& other) noexcept {
|
||
Swap(other);
|
||
}
|
||
|
||
IOFile& IOFile::operator=(IOFile&& other) noexcept {
|
||
Swap(other);
|
||
return *this;
|
||
}
|
||
|
||
void IOFile::Swap(IOFile& other) noexcept {
|
||
std::swap(m_file, other.m_file);
|
||
}
|
||
|
||
bool IOFile::Open(const std::string& filename, const char openmode[], int flags) {
|
||
Close();
|
||
bool m_good;
|
||
#ifdef _WIN32
|
||
if (flags != 0) {
|
||
m_file = _wfsopen(Common::UTF8ToUTF16W(filename).c_str(),
|
||
Common::UTF8ToUTF16W(openmode).c_str(), flags);
|
||
m_good = m_file != nullptr;
|
||
} else {
|
||
m_good = _wfopen_s(&m_file, Common::UTF8ToUTF16W(filename).c_str(),
|
||
Common::UTF8ToUTF16W(openmode).c_str()) == 0;
|
||
}
|
||
#else
|
||
m_file = std::fopen(filename.c_str(), openmode);
|
||
m_good = m_file != nullptr;
|
||
#endif
|
||
|
||
return m_good;
|
||
}
|
||
|
||
bool IOFile::Close() {
|
||
if (!IsOpen() || 0 != std::fclose(m_file)) {
|
||
return false;
|
||
}
|
||
|
||
m_file = nullptr;
|
||
return true;
|
||
}
|
||
|
||
u64 IOFile::GetSize() const {
|
||
if (IsOpen()) {
|
||
return FS::GetSize(m_file);
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
bool IOFile::Seek(s64 off, int origin) const {
|
||
return IsOpen() && 0 == fseeko(m_file, off, origin);
|
||
}
|
||
|
||
u64 IOFile::Tell() const {
|
||
if (IsOpen()) {
|
||
return ftello(m_file);
|
||
}
|
||
return std::numeric_limits<u64>::max();
|
||
}
|
||
|
||
bool IOFile::Flush() {
|
||
return IsOpen() && 0 == std::fflush(m_file);
|
||
}
|
||
|
||
std::size_t IOFile::ReadImpl(void* data, std::size_t length, std::size_t data_size) const {
|
||
if (!IsOpen()) {
|
||
return std::numeric_limits<std::size_t>::max();
|
||
}
|
||
|
||
if (length == 0) {
|
||
return 0;
|
||
}
|
||
|
||
DEBUG_ASSERT(data != nullptr);
|
||
|
||
return std::fread(data, data_size, length, m_file);
|
||
}
|
||
|
||
std::size_t IOFile::WriteImpl(const void* data, std::size_t length, std::size_t data_size) {
|
||
if (!IsOpen()) {
|
||
return std::numeric_limits<std::size_t>::max();
|
||
}
|
||
|
||
if (length == 0) {
|
||
return 0;
|
||
}
|
||
|
||
DEBUG_ASSERT(data != nullptr);
|
||
|
||
return std::fwrite(data, data_size, length, m_file);
|
||
}
|
||
|
||
bool IOFile::Resize(u64 size) {
|
||
return IsOpen() && 0 ==
|
||
#ifdef _WIN32
|
||
// ector: _chsize sucks, not 64-bit safe
|
||
// F|RES: changed to _chsize_s. i think it is 64-bit safe
|
||
_chsize_s(_fileno(m_file), size)
|
||
#else
|
||
// TODO: handle 64bit and growing
|
||
ftruncate(fileno(m_file), size)
|
||
#endif
|
||
;
|
||
}
|
||
|
||
} // namespace Common::FS
|