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Diffstat (limited to '')
| -rw-r--r-- | src/common/file_util.cpp | 1032 |
1 files changed, 0 insertions, 1032 deletions
diff --git a/src/common/file_util.cpp b/src/common/file_util.cpp deleted file mode 100644 index 18fbfa25b..000000000 --- a/src/common/file_util.cpp +++ /dev/null @@ -1,1032 +0,0 @@ -// Copyright 2013 Dolphin Emulator Project / 2014 Citra Emulator Project -// Licensed under GPLv2 or any later version -// Refer to the license.txt file included. - -#include <array> -#include <limits> -#include <memory> -#include <sstream> -#include <unordered_map> -#include "common/assert.h" -#include "common/common_funcs.h" -#include "common/common_paths.h" -#include "common/file_util.h" -#include "common/logging/log.h" - -#ifdef _WIN32 -#include <windows.h> -// windows.h needs to be included before other windows headers -#include <direct.h> // getcwd -#include <io.h> -#include <shellapi.h> -#include <shlobj.h> // for SHGetFolderPath -#include <tchar.h> -#include "common/string_util.h" - -#ifdef _MSC_VER -// 64 bit offsets for MSVC -#define fseeko _fseeki64 -#define ftello _ftelli64 -#define fileno _fileno -#endif - -// 64 bit offsets for MSVC and MinGW. MinGW also needs this for using _wstat64 -#define stat _stat64 -#define fstat _fstat64 - -#else -#ifdef __APPLE__ -#include <sys/param.h> -#endif -#include <cctype> -#include <cerrno> -#include <cstdlib> -#include <cstring> -#include <dirent.h> -#include <pwd.h> -#include <unistd.h> -#endif - -#if defined(__APPLE__) -// CFURL contains __attribute__ directives that gcc does not know how to parse, so we need to just -// ignore them if we're not using clang. The macro is only used to prevent linking against -// functions that don't exist on older versions of macOS, and the worst case scenario is a linker -// error, so this is perfectly safe, just inconvenient. -#ifndef __clang__ -#define availability(...) -#endif -#include <CoreFoundation/CFBundle.h> -#include <CoreFoundation/CFString.h> -#include <CoreFoundation/CFURL.h> -#ifdef availability -#undef availability -#endif - -#endif - -#include <algorithm> -#include <sys/stat.h> - -#ifndef S_ISDIR -#define S_ISDIR(m) (((m)&S_IFMT) == S_IFDIR) -#endif - -// This namespace has various generic functions related to files and paths. -// The code still needs a ton of cleanup. -// REMEMBER: strdup considered harmful! -namespace Common::FS { - -// Remove any ending forward slashes from directory paths -// Modifies argument. -static void StripTailDirSlashes(std::string& fname) { - if (fname.length() <= 1) { - return; - } - - std::size_t i = fname.length(); - while (i > 0 && fname[i - 1] == DIR_SEP_CHR) { - --i; - } - fname.resize(i); -} - -bool Exists(const std::string& filename) { - struct stat file_info; - - std::string copy(filename); - StripTailDirSlashes(copy); - -#ifdef _WIN32 - // Windows needs a slash to identify a driver root - if (copy.size() != 0 && copy.back() == ':') - copy += DIR_SEP_CHR; - - int result = _wstat64(Common::UTF8ToUTF16W(copy).c_str(), &file_info); -#else - int result = stat(copy.c_str(), &file_info); -#endif - - return (result == 0); -} - -bool IsDirectory(const std::string& filename) { - struct stat file_info; - - std::string copy(filename); - StripTailDirSlashes(copy); - -#ifdef _WIN32 - // Windows needs a slash to identify a driver root - if (copy.size() != 0 && copy.back() == ':') - copy += DIR_SEP_CHR; - - int result = _wstat64(Common::UTF8ToUTF16W(copy).c_str(), &file_info); -#else - int result = stat(copy.c_str(), &file_info); -#endif - - if (result < 0) { - LOG_DEBUG(Common_Filesystem, "stat failed on {}: {}", filename, GetLastErrorMsg()); - return false; - } - - return S_ISDIR(file_info.st_mode); -} - -bool Delete(const std::string& filename) { - LOG_TRACE(Common_Filesystem, "file {}", filename); - - // Return true because we care about the file no - // being there, not the actual delete. - if (!Exists(filename)) { - LOG_DEBUG(Common_Filesystem, "{} does not exist", filename); - return true; - } - - // We can't delete a directory - if (IsDirectory(filename)) { - LOG_ERROR(Common_Filesystem, "Failed: {} is a directory", filename); - return false; - } - -#ifdef _WIN32 - if (!DeleteFileW(Common::UTF8ToUTF16W(filename).c_str())) { - LOG_ERROR(Common_Filesystem, "DeleteFile failed on {}: {}", filename, GetLastErrorMsg()); - return false; - } -#else - if (unlink(filename.c_str()) == -1) { - LOG_ERROR(Common_Filesystem, "unlink failed on {}: {}", filename, GetLastErrorMsg()); - return false; - } -#endif - - return true; -} - -bool CreateDir(const std::string& path) { - LOG_TRACE(Common_Filesystem, "directory {}", path); -#ifdef _WIN32 - if (::CreateDirectoryW(Common::UTF8ToUTF16W(path).c_str(), nullptr)) - return true; - DWORD error = GetLastError(); - if (error == ERROR_ALREADY_EXISTS) { - LOG_DEBUG(Common_Filesystem, "CreateDirectory failed on {}: already exists", path); - return true; - } - LOG_ERROR(Common_Filesystem, "CreateDirectory failed on {}: {}", path, error); - return false; -#else - if (mkdir(path.c_str(), 0755) == 0) - return true; - - int err = errno; - - if (err == EEXIST) { - LOG_DEBUG(Common_Filesystem, "mkdir failed on {}: already exists", path); - return true; - } - - LOG_ERROR(Common_Filesystem, "mkdir failed on {}: {}", path, strerror(err)); - return false; -#endif -} - -bool CreateFullPath(const std::string& fullPath) { - int panicCounter = 100; - LOG_TRACE(Common_Filesystem, "path {}", fullPath); - - if (Exists(fullPath)) { - LOG_DEBUG(Common_Filesystem, "path exists {}", fullPath); - return true; - } - - std::size_t position = 0; - while (true) { - // Find next sub path - position = fullPath.find(DIR_SEP_CHR, position); - - // we're done, yay! - if (position == fullPath.npos) - return true; - - // Include the '/' so the first call is CreateDir("/") rather than CreateDir("") - std::string const subPath(fullPath.substr(0, position + 1)); - if (!IsDirectory(subPath) && !CreateDir(subPath)) { - LOG_ERROR(Common, "CreateFullPath: directory creation failed"); - return false; - } - - // A safety check - panicCounter--; - if (panicCounter <= 0) { - LOG_ERROR(Common, "CreateFullPath: directory structure is too deep"); - return false; - } - position++; - } -} - -bool DeleteDir(const std::string& filename) { - LOG_TRACE(Common_Filesystem, "directory {}", filename); - - // check if a directory - if (!IsDirectory(filename)) { - LOG_ERROR(Common_Filesystem, "Not a directory {}", filename); - return false; - } - -#ifdef _WIN32 - if (::RemoveDirectoryW(Common::UTF8ToUTF16W(filename).c_str())) - return true; -#else - if (rmdir(filename.c_str()) == 0) - return true; -#endif - LOG_ERROR(Common_Filesystem, "failed {}: {}", filename, GetLastErrorMsg()); - - return false; -} - -bool Rename(const std::string& srcFilename, const std::string& destFilename) { - LOG_TRACE(Common_Filesystem, "{} --> {}", srcFilename, destFilename); -#ifdef _WIN32 - if (_wrename(Common::UTF8ToUTF16W(srcFilename).c_str(), - Common::UTF8ToUTF16W(destFilename).c_str()) == 0) - return true; -#else - if (rename(srcFilename.c_str(), destFilename.c_str()) == 0) - return true; -#endif - LOG_ERROR(Common_Filesystem, "failed {} --> {}: {}", srcFilename, destFilename, - GetLastErrorMsg()); - return false; -} - -bool Copy(const std::string& srcFilename, const std::string& destFilename) { - LOG_TRACE(Common_Filesystem, "{} --> {}", srcFilename, destFilename); -#ifdef _WIN32 - if (CopyFileW(Common::UTF8ToUTF16W(srcFilename).c_str(), - Common::UTF8ToUTF16W(destFilename).c_str(), FALSE)) - return true; - - LOG_ERROR(Common_Filesystem, "failed {} --> {}: {}", srcFilename, destFilename, - GetLastErrorMsg()); - return false; -#else - using CFilePointer = std::unique_ptr<FILE, decltype(&std::fclose)>; - - // Open input file - CFilePointer input{fopen(srcFilename.c_str(), "rb"), std::fclose}; - if (!input) { - LOG_ERROR(Common_Filesystem, "opening input failed {} --> {}: {}", srcFilename, - destFilename, GetLastErrorMsg()); - return false; - } - - // open output file - CFilePointer output{fopen(destFilename.c_str(), "wb"), std::fclose}; - if (!output) { - LOG_ERROR(Common_Filesystem, "opening output failed {} --> {}: {}", srcFilename, - destFilename, GetLastErrorMsg()); - return false; - } - - // copy loop - std::array<char, 1024> buffer; - while (!feof(input.get())) { - // read input - std::size_t rnum = fread(buffer.data(), sizeof(char), buffer.size(), input.get()); - if (rnum != buffer.size()) { - if (ferror(input.get()) != 0) { - LOG_ERROR(Common_Filesystem, "failed reading from source, {} --> {}: {}", - srcFilename, destFilename, GetLastErrorMsg()); - return false; - } - } - - // write output - std::size_t wnum = fwrite(buffer.data(), sizeof(char), rnum, output.get()); - if (wnum != rnum) { - LOG_ERROR(Common_Filesystem, "failed writing to output, {} --> {}: {}", srcFilename, - destFilename, GetLastErrorMsg()); - return false; - } - } - - return true; -#endif -} - -u64 GetSize(const std::string& filename) { - if (!Exists(filename)) { - LOG_ERROR(Common_Filesystem, "failed {}: No such file", filename); - return 0; - } - - if (IsDirectory(filename)) { - LOG_ERROR(Common_Filesystem, "failed {}: is a directory", filename); - return 0; - } - - struct stat buf; -#ifdef _WIN32 - if (_wstat64(Common::UTF8ToUTF16W(filename).c_str(), &buf) == 0) -#else - if (stat(filename.c_str(), &buf) == 0) -#endif - { - LOG_TRACE(Common_Filesystem, "{}: {}", filename, buf.st_size); - return buf.st_size; - } - - LOG_ERROR(Common_Filesystem, "Stat failed {}: {}", filename, GetLastErrorMsg()); - return 0; -} - -u64 GetSize(const int fd) { - struct stat buf; - if (fstat(fd, &buf) != 0) { - LOG_ERROR(Common_Filesystem, "GetSize: stat failed {}: {}", fd, GetLastErrorMsg()); - return 0; - } - return buf.st_size; -} - -u64 GetSize(FILE* f) { - // can't use off_t here because it can be 32-bit - u64 pos = ftello(f); - if (fseeko(f, 0, SEEK_END) != 0) { - LOG_ERROR(Common_Filesystem, "GetSize: seek failed {}: {}", fmt::ptr(f), GetLastErrorMsg()); - return 0; - } - u64 size = ftello(f); - if ((size != pos) && (fseeko(f, pos, SEEK_SET) != 0)) { - LOG_ERROR(Common_Filesystem, "GetSize: seek failed {}: {}", fmt::ptr(f), GetLastErrorMsg()); - return 0; - } - return size; -} - -bool CreateEmptyFile(const std::string& filename) { - LOG_TRACE(Common_Filesystem, "{}", filename); - - if (!IOFile(filename, "wb").IsOpen()) { - LOG_ERROR(Common_Filesystem, "failed {}: {}", filename, GetLastErrorMsg()); - return false; - } - - return true; -} - -bool ForeachDirectoryEntry(u64* num_entries_out, const std::string& directory, - DirectoryEntryCallable callback) { - LOG_TRACE(Common_Filesystem, "directory {}", directory); - - // How many files + directories we found - u64 found_entries = 0; - - // Save the status of callback function - bool callback_error = false; - -#ifdef _WIN32 - // Find the first file in the directory. - WIN32_FIND_DATAW ffd; - - HANDLE handle_find = FindFirstFileW(Common::UTF8ToUTF16W(directory + "\\*").c_str(), &ffd); - if (handle_find == INVALID_HANDLE_VALUE) { - FindClose(handle_find); - return false; - } - // windows loop - do { - const std::string virtual_name(Common::UTF16ToUTF8(ffd.cFileName)); -#else - DIR* dirp = opendir(directory.c_str()); - if (!dirp) - return false; - - // non windows loop - while (struct dirent* result = readdir(dirp)) { - const std::string virtual_name(result->d_name); -#endif - - if (virtual_name == "." || virtual_name == "..") - continue; - - u64 ret_entries = 0; - if (!callback(&ret_entries, directory, virtual_name)) { - callback_error = true; - break; - } - found_entries += ret_entries; - -#ifdef _WIN32 - } while (FindNextFileW(handle_find, &ffd) != 0); - FindClose(handle_find); -#else - } - closedir(dirp); -#endif - - if (callback_error) - return false; - - // num_entries_out is allowed to be specified nullptr, in which case we shouldn't try to set it - if (num_entries_out != nullptr) - *num_entries_out = found_entries; - return true; -} - -u64 ScanDirectoryTree(const std::string& directory, FSTEntry& parent_entry, - unsigned int recursion) { - const auto callback = [recursion, &parent_entry](u64* num_entries_out, - const std::string& directory, - const std::string& virtual_name) -> bool { - FSTEntry entry; - entry.virtualName = virtual_name; - entry.physicalName = directory + DIR_SEP + virtual_name; - - if (IsDirectory(entry.physicalName)) { - entry.isDirectory = true; - // is a directory, lets go inside if we didn't recurse to often - if (recursion > 0) { - entry.size = ScanDirectoryTree(entry.physicalName, entry, recursion - 1); - *num_entries_out += entry.size; - } else { - entry.size = 0; - } - } else { // is a file - entry.isDirectory = false; - entry.size = GetSize(entry.physicalName); - } - (*num_entries_out)++; - - // Push into the tree - parent_entry.children.push_back(std::move(entry)); - return true; - }; - - u64 num_entries; - return ForeachDirectoryEntry(&num_entries, directory, callback) ? num_entries : 0; -} - -bool DeleteDirRecursively(const std::string& directory, unsigned int recursion) { - const auto callback = [recursion](u64*, const std::string& directory, - const std::string& virtual_name) { - const std::string new_path = directory + DIR_SEP_CHR + virtual_name; - - if (IsDirectory(new_path)) { - if (recursion == 0) { - return false; - } - return DeleteDirRecursively(new_path, recursion - 1); - } - return Delete(new_path); - }; - - if (!ForeachDirectoryEntry(nullptr, directory, callback)) - return false; - - // Delete the outermost directory - DeleteDir(directory); - return true; -} - -void CopyDir([[maybe_unused]] const std::string& source_path, - [[maybe_unused]] const std::string& dest_path) { -#ifndef _WIN32 - if (source_path == dest_path) { - return; - } - if (!Exists(source_path)) { - return; - } - if (!Exists(dest_path)) { - CreateFullPath(dest_path); - } - - DIR* dirp = opendir(source_path.c_str()); - if (!dirp) { - return; - } - - while (struct dirent* result = readdir(dirp)) { - const std::string virtualName(result->d_name); - // check for "." and ".." - if (((virtualName[0] == '.') && (virtualName[1] == '\0')) || - ((virtualName[0] == '.') && (virtualName[1] == '.') && (virtualName[2] == '\0'))) { - continue; - } - - std::string source, dest; - source = source_path + virtualName; - dest = dest_path + virtualName; - if (IsDirectory(source)) { - source += '/'; - dest += '/'; - if (!Exists(dest)) { - CreateFullPath(dest); - } - CopyDir(source, dest); - } else if (!Exists(dest)) { - Copy(source, dest); - } - } - closedir(dirp); -#endif -} - -std::optional<std::string> GetCurrentDir() { -// Get the current working directory (getcwd uses malloc) -#ifdef _WIN32 - wchar_t* dir = _wgetcwd(nullptr, 0); - if (!dir) { -#else - char* dir = getcwd(nullptr, 0); - if (!dir) { -#endif - LOG_ERROR(Common_Filesystem, "GetCurrentDirectory failed: {}", GetLastErrorMsg()); - return std::nullopt; - } -#ifdef _WIN32 - std::string strDir = Common::UTF16ToUTF8(dir); -#else - std::string strDir = dir; -#endif - free(dir); - return strDir; -} - -bool SetCurrentDir(const std::string& directory) { -#ifdef _WIN32 - return _wchdir(Common::UTF8ToUTF16W(directory).c_str()) == 0; -#else - return chdir(directory.c_str()) == 0; -#endif -} - -#if defined(__APPLE__) -std::string GetBundleDirectory() { - CFURLRef BundleRef; - char AppBundlePath[MAXPATHLEN]; - // Get the main bundle for the app - BundleRef = CFBundleCopyBundleURL(CFBundleGetMainBundle()); - CFStringRef BundlePath = CFURLCopyFileSystemPath(BundleRef, kCFURLPOSIXPathStyle); - CFStringGetFileSystemRepresentation(BundlePath, AppBundlePath, sizeof(AppBundlePath)); - CFRelease(BundleRef); - CFRelease(BundlePath); - - return AppBundlePath; -} -#endif - -#ifdef _WIN32 -const std::string& GetExeDirectory() { - static std::string exe_path; - if (exe_path.empty()) { - wchar_t wchar_exe_path[2048]; - GetModuleFileNameW(nullptr, wchar_exe_path, 2048); - exe_path = Common::UTF16ToUTF8(wchar_exe_path); - exe_path = exe_path.substr(0, exe_path.find_last_of('\\')); - } - return exe_path; -} - -std::string AppDataRoamingDirectory() { - PWSTR pw_local_path = nullptr; - // Only supported by Windows Vista or later - SHGetKnownFolderPath(FOLDERID_RoamingAppData, 0, nullptr, &pw_local_path); - std::string local_path = Common::UTF16ToUTF8(pw_local_path); - CoTaskMemFree(pw_local_path); - return local_path; -} -#else -/** - * @return The user’s home directory on POSIX systems - */ -static const std::string& GetHomeDirectory() { - static std::string home_path; - if (home_path.empty()) { - const char* envvar = getenv("HOME"); - if (envvar) { - home_path = envvar; - } else { - auto pw = getpwuid(getuid()); - ASSERT_MSG(pw, - "$HOME isn’t defined, and the current user can’t be found in /etc/passwd."); - home_path = pw->pw_dir; - } - } - return home_path; -} - -/** - * Follows the XDG Base Directory Specification to get a directory path - * @param envvar The XDG environment variable to get the value from - * @return The directory path - * @sa http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html - */ -static const std::string GetUserDirectory(const std::string& envvar) { - const char* directory = getenv(envvar.c_str()); - - std::string user_dir; - if (directory) { - user_dir = directory; - } else { - std::string subdirectory; - if (envvar == "XDG_DATA_HOME") - subdirectory = DIR_SEP ".local" DIR_SEP "share"; - else if (envvar == "XDG_CONFIG_HOME") - subdirectory = DIR_SEP ".config"; - else if (envvar == "XDG_CACHE_HOME") - subdirectory = DIR_SEP ".cache"; - else - ASSERT_MSG(false, "Unknown XDG variable {}.", envvar); - user_dir = GetHomeDirectory() + subdirectory; - } - - ASSERT_MSG(!user_dir.empty(), "User directory {} mustn’t be empty.", envvar); - ASSERT_MSG(user_dir[0] == '/', "User directory {} must be absolute.", envvar); - - return user_dir; -} -#endif - -std::string GetSysDirectory() { - std::string sysDir; - -#if defined(__APPLE__) - sysDir = GetBundleDirectory(); - sysDir += DIR_SEP; - sysDir += SYSDATA_DIR; -#else - sysDir = SYSDATA_DIR; -#endif - sysDir += DIR_SEP; - - LOG_DEBUG(Common_Filesystem, "Setting to {}:", sysDir); - return sysDir; -} - -const std::string& GetUserPath(UserPath path, const std::string& new_path) { - static std::unordered_map<UserPath, std::string> paths; - auto& user_path = paths[UserPath::UserDir]; - - // Set up all paths and files on the first run - if (user_path.empty()) { -#ifdef _WIN32 - user_path = GetExeDirectory() + DIR_SEP USERDATA_DIR DIR_SEP; - if (!IsDirectory(user_path)) { - user_path = AppDataRoamingDirectory() + DIR_SEP EMU_DATA_DIR DIR_SEP; - } else { - LOG_INFO(Common_Filesystem, "Using the local user directory"); - } - - paths.emplace(UserPath::ConfigDir, user_path + CONFIG_DIR DIR_SEP); - paths.emplace(UserPath::CacheDir, user_path + CACHE_DIR DIR_SEP); -#else - if (Exists(ROOT_DIR DIR_SEP USERDATA_DIR)) { - user_path = ROOT_DIR DIR_SEP USERDATA_DIR DIR_SEP; - paths.emplace(UserPath::ConfigDir, user_path + CONFIG_DIR DIR_SEP); - paths.emplace(UserPath::CacheDir, user_path + CACHE_DIR DIR_SEP); - } else { - std::string data_dir = GetUserDirectory("XDG_DATA_HOME"); - std::string config_dir = GetUserDirectory("XDG_CONFIG_HOME"); - std::string cache_dir = GetUserDirectory("XDG_CACHE_HOME"); - - user_path = data_dir + DIR_SEP EMU_DATA_DIR DIR_SEP; - paths.emplace(UserPath::ConfigDir, config_dir + DIR_SEP EMU_DATA_DIR DIR_SEP); - paths.emplace(UserPath::CacheDir, cache_dir + DIR_SEP EMU_DATA_DIR DIR_SEP); - } -#endif - paths.emplace(UserPath::SDMCDir, user_path + SDMC_DIR DIR_SEP); - paths.emplace(UserPath::NANDDir, user_path + NAND_DIR DIR_SEP); - paths.emplace(UserPath::LoadDir, user_path + LOAD_DIR DIR_SEP); - paths.emplace(UserPath::DumpDir, user_path + DUMP_DIR DIR_SEP); - paths.emplace(UserPath::ScreenshotsDir, user_path + SCREENSHOTS_DIR DIR_SEP); - paths.emplace(UserPath::ShaderDir, user_path + SHADER_DIR DIR_SEP); - paths.emplace(UserPath::SysDataDir, user_path + SYSDATA_DIR DIR_SEP); - paths.emplace(UserPath::KeysDir, user_path + KEYS_DIR DIR_SEP); - // TODO: Put the logs in a better location for each OS - paths.emplace(UserPath::LogDir, user_path + LOG_DIR DIR_SEP); - } - - if (!new_path.empty()) { - if (!IsDirectory(new_path)) { - LOG_ERROR(Common_Filesystem, "Invalid path specified {}", new_path); - return paths[path]; - } else { - paths[path] = new_path; - } - - switch (path) { - case UserPath::RootDir: - user_path = paths[UserPath::RootDir] + DIR_SEP; - break; - case UserPath::UserDir: - user_path = paths[UserPath::RootDir] + DIR_SEP; - paths[UserPath::ConfigDir] = user_path + CONFIG_DIR DIR_SEP; - paths[UserPath::CacheDir] = user_path + CACHE_DIR DIR_SEP; - paths[UserPath::SDMCDir] = user_path + SDMC_DIR DIR_SEP; - paths[UserPath::NANDDir] = user_path + NAND_DIR DIR_SEP; - break; - default: - break; - } - } - - return paths[path]; -} - -std::string GetHactoolConfigurationPath() { -#ifdef _WIN32 - PWSTR pw_local_path = nullptr; - if (SHGetKnownFolderPath(FOLDERID_Profile, 0, nullptr, &pw_local_path) != S_OK) - return ""; - 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 |