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Merge pull request #5173 from lioncash/common-fs
common/file_util: Make use of std::filesystem
This commit is contained in:
Rodrigo Locatti
GitHub
commit
ce5fcb6bb2
2 changed files with 123 additions and 407 deletions
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@ -3,6 +3,7 @@
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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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@ -67,290 +68,102 @@
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#include <algorithm>
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#include <sys/stat.h>
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#ifndef S_ISDIR
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#define S_ISDIR(m) (((m)&S_IFMT) == S_IFDIR)
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#endif
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// This namespace has various generic functions related to files and paths.
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// The code still needs a ton of cleanup.
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// REMEMBER: strdup considered harmful!
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namespace Common::FS {
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namespace fs = std::filesystem;
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// Remove any ending forward slashes from directory paths
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// Modifies argument.
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static void StripTailDirSlashes(std::string& fname) {
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if (fname.length() <= 1) {
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return;
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}
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std::size_t i = fname.length();
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while (i > 0 && fname[i - 1] == DIR_SEP_CHR) {
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--i;
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}
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fname.resize(i);
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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 Exists(const std::string& filename) {
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struct stat file_info;
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std::string copy(filename);
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StripTailDirSlashes(copy);
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#ifdef _WIN32
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// Windows needs a slash to identify a driver root
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if (copy.size() != 0 && copy.back() == ':')
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copy += DIR_SEP_CHR;
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int result = _wstat64(Common::UTF8ToUTF16W(copy).c_str(), &file_info);
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#else
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int result = stat(copy.c_str(), &file_info);
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#endif
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return (result == 0);
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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 IsDirectory(const std::string& filename) {
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struct stat file_info;
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std::string copy(filename);
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StripTailDirSlashes(copy);
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#ifdef _WIN32
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// Windows needs a slash to identify a driver root
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if (copy.size() != 0 && copy.back() == ':')
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copy += DIR_SEP_CHR;
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int result = _wstat64(Common::UTF8ToUTF16W(copy).c_str(), &file_info);
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#else
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int result = stat(copy.c_str(), &file_info);
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#endif
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if (result < 0) {
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LOG_DEBUG(Common_Filesystem, "stat failed on {}: {}", filename, GetLastErrorMsg());
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return false;
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}
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return S_ISDIR(file_info.st_mode);
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}
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bool Delete(const std::string& filename) {
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LOG_TRACE(Common_Filesystem, "file {}", filename);
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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(filename)) {
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LOG_DEBUG(Common_Filesystem, "{} does not exist", filename);
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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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// We can't delete a directory
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if (IsDirectory(filename)) {
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LOG_ERROR(Common_Filesystem, "Failed: {} is a directory", filename);
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return false;
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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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#ifdef _WIN32
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if (!DeleteFileW(Common::UTF8ToUTF16W(filename).c_str())) {
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LOG_ERROR(Common_Filesystem, "DeleteFile failed on {}: {}", filename, GetLastErrorMsg());
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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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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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#else
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if (unlink(filename.c_str()) == -1) {
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LOG_ERROR(Common_Filesystem, "unlink failed on {}: {}", filename, GetLastErrorMsg());
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return false;
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}
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#endif
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return true;
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}
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bool CreateDir(const std::string& path) {
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LOG_TRACE(Common_Filesystem, "directory {}", path);
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#ifdef _WIN32
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if (::CreateDirectoryW(Common::UTF8ToUTF16W(path).c_str(), nullptr))
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return true;
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DWORD error = GetLastError();
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if (error == ERROR_ALREADY_EXISTS) {
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LOG_DEBUG(Common_Filesystem, "CreateDirectory failed on {}: already exists", path);
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return true;
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}
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LOG_ERROR(Common_Filesystem, "CreateDirectory failed on {}: {}", path, error);
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return false;
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#else
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if (mkdir(path.c_str(), 0755) == 0)
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return true;
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bool CreateFullPath(const fs::path& path) {
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LOG_TRACE(Common_Filesystem, "path {}", path.string());
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int err = errno;
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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 (err == EEXIST) {
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LOG_DEBUG(Common_Filesystem, "mkdir failed on {}: already exists", path);
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return true;
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}
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LOG_ERROR(Common_Filesystem, "mkdir failed on {}: {}", path, strerror(err));
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return false;
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#endif
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}
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bool CreateFullPath(const std::string& fullPath) {
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int panicCounter = 100;
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LOG_TRACE(Common_Filesystem, "path {}", fullPath);
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if (Exists(fullPath)) {
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LOG_DEBUG(Common_Filesystem, "path exists {}", fullPath);
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return true;
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}
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std::size_t position = 0;
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while (true) {
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// Find next sub path
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position = fullPath.find(DIR_SEP_CHR, position);
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// we're done, yay!
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if (position == fullPath.npos)
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return true;
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// Include the '/' so the first call is CreateDir("/") rather than CreateDir("")
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std::string const subPath(fullPath.substr(0, position + 1));
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if (!IsDirectory(subPath) && !CreateDir(subPath)) {
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LOG_ERROR(Common, "CreateFullPath: directory creation failed");
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return false;
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}
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// A safety check
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panicCounter--;
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if (panicCounter <= 0) {
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LOG_ERROR(Common, "CreateFullPath: directory structure is too deep");
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return false;
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}
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position++;
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}
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}
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bool DeleteDir(const std::string& filename) {
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LOG_TRACE(Common_Filesystem, "directory {}", filename);
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// check if a directory
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if (!IsDirectory(filename)) {
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LOG_ERROR(Common_Filesystem, "Not a directory {}", filename);
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if (!success) {
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LOG_ERROR(Common_Filesystem, "Unable to create full path: {}", ec.message());
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return false;
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}
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#ifdef _WIN32
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if (::RemoveDirectoryW(Common::UTF8ToUTF16W(filename).c_str()))
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return true;
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#else
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if (rmdir(filename.c_str()) == 0)
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return true;
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#endif
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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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bool Rename(const std::string& srcFilename, const std::string& destFilename) {
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LOG_TRACE(Common_Filesystem, "{} --> {}", srcFilename, destFilename);
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#ifdef _WIN32
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if (_wrename(Common::UTF8ToUTF16W(srcFilename).c_str(),
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Common::UTF8ToUTF16W(destFilename).c_str()) == 0)
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return true;
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#else
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if (rename(srcFilename.c_str(), destFilename.c_str()) == 0)
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return true;
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#endif
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LOG_ERROR(Common_Filesystem, "failed {} --> {}: {}", srcFilename, destFilename,
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GetLastErrorMsg());
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return false;
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}
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bool Copy(const std::string& srcFilename, const std::string& destFilename) {
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LOG_TRACE(Common_Filesystem, "{} --> {}", srcFilename, destFilename);
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#ifdef _WIN32
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if (CopyFileW(Common::UTF8ToUTF16W(srcFilename).c_str(),
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Common::UTF8ToUTF16W(destFilename).c_str(), FALSE))
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return true;
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LOG_ERROR(Common_Filesystem, "failed {} --> {}: {}", srcFilename, destFilename,
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GetLastErrorMsg());
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return false;
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#else
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using CFilePointer = std::unique_ptr<FILE, decltype(&std::fclose)>;
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// Open input file
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CFilePointer input{fopen(srcFilename.c_str(), "rb"), std::fclose};
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if (!input) {
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LOG_ERROR(Common_Filesystem, "opening input failed {} --> {}: {}", srcFilename,
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destFilename, GetLastErrorMsg());
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return false;
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}
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// open output file
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CFilePointer output{fopen(destFilename.c_str(), "wb"), std::fclose};
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if (!output) {
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LOG_ERROR(Common_Filesystem, "opening output failed {} --> {}: {}", srcFilename,
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destFilename, GetLastErrorMsg());
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return false;
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}
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// copy loop
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std::array<char, 1024> buffer;
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while (!feof(input.get())) {
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// read input
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std::size_t rnum = fread(buffer.data(), sizeof(char), buffer.size(), input.get());
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if (rnum != buffer.size()) {
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if (ferror(input.get()) != 0) {
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LOG_ERROR(Common_Filesystem, "failed reading from source, {} --> {}: {}",
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srcFilename, destFilename, GetLastErrorMsg());
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return false;
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}
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}
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// write output
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std::size_t wnum = fwrite(buffer.data(), sizeof(char), rnum, output.get());
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if (wnum != rnum) {
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LOG_ERROR(Common_Filesystem, "failed writing to output, {} --> {}: {}", srcFilename,
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destFilename, GetLastErrorMsg());
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return false;
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}
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}
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return true;
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#endif
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}
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u64 GetSize(const std::string& filename) {
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if (!Exists(filename)) {
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LOG_ERROR(Common_Filesystem, "failed {}: No such file", filename);
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return 0;
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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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if (IsDirectory(filename)) {
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LOG_ERROR(Common_Filesystem, "failed {}: is a directory", filename);
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return 0;
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}
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struct stat buf;
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#ifdef _WIN32
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if (_wstat64(Common::UTF8ToUTF16W(filename).c_str(), &buf) == 0)
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#else
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if (stat(filename.c_str(), &buf) == 0)
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#endif
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{
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LOG_TRACE(Common_Filesystem, "{}: {}", filename, buf.st_size);
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return buf.st_size;
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}
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LOG_ERROR(Common_Filesystem, "Stat failed {}: {}", filename, GetLastErrorMsg());
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return 0;
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return true;
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}
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u64 GetSize(const int fd) {
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struct stat buf;
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if (fstat(fd, &buf) != 0) {
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LOG_ERROR(Common_Filesystem, "GetSize: stat failed {}: {}", fd, GetLastErrorMsg());
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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 buf.st_size;
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return size;
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}
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u64 GetSize(FILE* f) {
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@ -438,132 +251,58 @@ bool ForeachDirectoryEntry(u64* num_entries_out, const std::string& directory,
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return true;
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}
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u64 ScanDirectoryTree(const std::string& directory, FSTEntry& parent_entry,
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unsigned int recursion) {
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const auto callback = [recursion, &parent_entry](u64* num_entries_out,
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const std::string& directory,
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const std::string& virtual_name) -> bool {
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FSTEntry entry;
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entry.virtualName = virtual_name;
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entry.physicalName = directory + DIR_SEP + virtual_name;
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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 (IsDirectory(entry.physicalName)) {
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entry.isDirectory = true;
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// is a directory, lets go inside if we didn't recurse to often
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if (recursion > 0) {
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entry.size = ScanDirectoryTree(entry.physicalName, entry, recursion - 1);
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*num_entries_out += entry.size;
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} else {
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entry.size = 0;
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}
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} else { // is a file
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entry.isDirectory = false;
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entry.size = GetSize(entry.physicalName);
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}
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(*num_entries_out)++;
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// Push into the tree
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parent_entry.children.push_back(std::move(entry));
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return true;
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};
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u64 num_entries;
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return ForeachDirectoryEntry(&num_entries, directory, callback) ? num_entries : 0;
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}
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bool DeleteDirRecursively(const std::string& directory, unsigned int recursion) {
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const auto callback = [recursion](u64*, const std::string& directory,
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const std::string& virtual_name) {
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const std::string new_path = directory + DIR_SEP_CHR + virtual_name;
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if (IsDirectory(new_path)) {
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if (recursion == 0) {
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return false;
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}
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return DeleteDirRecursively(new_path, recursion - 1);
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}
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return Delete(new_path);
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};
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if (!ForeachDirectoryEntry(nullptr, directory, callback))
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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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// Delete the outermost directory
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DeleteDir(directory);
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return true;
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}
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void CopyDir([[maybe_unused]] const std::string& source_path,
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[[maybe_unused]] const std::string& dest_path) {
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#ifndef _WIN32
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if (source_path == dest_path) {
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return;
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}
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if (!Exists(source_path)) {
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return;
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}
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if (!Exists(dest_path)) {
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CreateFullPath(dest_path);
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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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DIR* dirp = opendir(source_path.c_str());
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if (!dirp) {
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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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while (struct dirent* result = readdir(dirp)) {
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const std::string virtualName(result->d_name);
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// check for "." and ".."
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if (((virtualName[0] == '.') && (virtualName[1] == '\0')) ||
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((virtualName[0] == '.') && (virtualName[1] == '.') && (virtualName[2] == '\0'))) {
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continue;
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}
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std::string source, dest;
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source = source_path + virtualName;
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dest = dest_path + virtualName;
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if (IsDirectory(source)) {
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source += '/';
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dest += '/';
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if (!Exists(dest)) {
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CreateFullPath(dest);
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}
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CopyDir(source, dest);
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} else if (!Exists(dest)) {
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Copy(source, dest);
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}
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}
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closedir(dirp);
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#endif
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LOG_TRACE(Common_Filesystem, "Successfully copied directory.");
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}
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std::optional<std::string> GetCurrentDir() {
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// Get the current working directory (getcwd uses malloc)
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||||
#ifdef _WIN32
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wchar_t* dir = _wgetcwd(nullptr, 0);
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if (!dir) {
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#else
|
||||
char* dir = getcwd(nullptr, 0);
|
||||
if (!dir) {
|
||||
#endif
|
||||
LOG_ERROR(Common_Filesystem, "GetCurrentDirectory failed: {}", GetLastErrorMsg());
|
||||
std::optional<fs::path> GetCurrentDir() {
|
||||
std::error_code ec;
|
||||
auto path = fs::current_path(ec);
|
||||
|
||||
if (ec) {
|
||||
LOG_ERROR(Common_Filesystem, "Unable to retrieve current working directory: {}",
|
||||
ec.message());
|
||||
return std::nullopt;
|
||||
}
|
||||
#ifdef _WIN32
|
||||
std::string strDir = Common::UTF16ToUTF8(dir);
|
||||
#else
|
||||
std::string strDir = dir;
|
||||
#endif
|
||||
free(dir);
|
||||
return strDir;
|
||||
|
||||
return {std::move(path)};
|
||||
}
|
||||
|
||||
bool SetCurrentDir(const std::string& directory) {
|
||||
#ifdef _WIN32
|
||||
return _wchdir(Common::UTF8ToUTF16W(directory).c_str()) == 0;
|
||||
#else
|
||||
return chdir(directory.c_str()) == 0;
|
||||
#endif
|
||||
bool SetCurrentDir(const fs::path& path) {
|
||||
std::error_code ec;
|
||||
fs::current_path(path, ec);
|
||||
|
||||
if (ec) {
|
||||
LOG_ERROR(Common_Filesystem, "Unable to set {} as working directory: {}", path.string(),
|
||||
ec.message());
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
#if defined(__APPLE__)
|
||||
|
|
|
|||
|
|
@ -6,6 +6,7 @@
|
|||
|
||||
#include <array>
|
||||
#include <cstdio>
|
||||
#include <filesystem>
|
||||
#include <fstream>
|
||||
#include <functional>
|
||||
#include <limits>
|
||||
|
|
@ -38,48 +39,34 @@ enum class UserPath {
|
|||
UserDir,
|
||||
};
|
||||
|
||||
// FileSystem tree node/
|
||||
struct FSTEntry {
|
||||
bool isDirectory;
|
||||
u64 size; // file length or number of entries from children
|
||||
std::string physicalName; // name on disk
|
||||
std::string virtualName; // name in FST names table
|
||||
std::vector<FSTEntry> children;
|
||||
};
|
||||
// Returns true if the path exists
|
||||
[[nodiscard]] bool Exists(const std::filesystem::path& path);
|
||||
|
||||
// Returns true if file filename exists
|
||||
[[nodiscard]] bool Exists(const std::string& filename);
|
||||
|
||||
// Returns true if filename is a directory
|
||||
[[nodiscard]] bool IsDirectory(const std::string& filename);
|
||||
// Returns true if path is a directory
|
||||
[[nodiscard]] bool IsDirectory(const std::filesystem::path& path);
|
||||
|
||||
// Returns the size of filename (64bit)
|
||||
[[nodiscard]] u64 GetSize(const std::string& filename);
|
||||
|
||||
// Overloaded GetSize, accepts file descriptor
|
||||
[[nodiscard]] u64 GetSize(int fd);
|
||||
[[nodiscard]] u64 GetSize(const std::filesystem::path& path);
|
||||
|
||||
// Overloaded GetSize, accepts FILE*
|
||||
[[nodiscard]] u64 GetSize(FILE* f);
|
||||
|
||||
// Returns true if successful, or path already exists.
|
||||
bool CreateDir(const std::string& filename);
|
||||
bool CreateDir(const std::filesystem::path& path);
|
||||
|
||||
// Creates the full path of fullPath returns true on success
|
||||
bool CreateFullPath(const std::string& fullPath);
|
||||
// Creates the full path of path. Returns true on success
|
||||
bool CreateFullPath(const std::filesystem::path& path);
|
||||
|
||||
// Deletes a given filename, return true on success
|
||||
// Doesn't supports deleting a directory
|
||||
bool Delete(const std::string& filename);
|
||||
// Deletes a given file at the path.
|
||||
// This will also delete empty directories.
|
||||
// Return true on success
|
||||
bool Delete(const std::filesystem::path& path);
|
||||
|
||||
// Deletes a directory filename, returns true on success
|
||||
bool DeleteDir(const std::string& filename);
|
||||
// Renames file src to dst, returns true on success
|
||||
bool Rename(const std::filesystem::path& src, const std::filesystem::path& dst);
|
||||
|
||||
// renames file srcFilename to destFilename, returns true on success
|
||||
bool Rename(const std::string& srcFilename, const std::string& destFilename);
|
||||
|
||||
// copies file srcFilename to destFilename, returns true on success
|
||||
bool Copy(const std::string& srcFilename, const std::string& destFilename);
|
||||
// copies file src to dst, returns true on success
|
||||
bool Copy(const std::filesystem::path& src, const std::filesystem::path& dst);
|
||||
|
||||
// creates an empty file filename, returns true on success
|
||||
bool CreateEmptyFile(const std::string& filename);
|
||||
|
|
@ -106,27 +93,17 @@ using DirectoryEntryCallable = std::function<bool(
|
|||
bool ForeachDirectoryEntry(u64* num_entries_out, const std::string& directory,
|
||||
DirectoryEntryCallable callback);
|
||||
|
||||
/**
|
||||
* Scans the directory tree, storing the results.
|
||||
* @param directory the parent directory to start scanning from
|
||||
* @param parent_entry FSTEntry where the filesystem tree results will be stored.
|
||||
* @param recursion Number of children directories to read before giving up.
|
||||
* @return the total number of files/directories found
|
||||
*/
|
||||
u64 ScanDirectoryTree(const std::string& directory, FSTEntry& parent_entry,
|
||||
unsigned int recursion = 0);
|
||||
|
||||
// deletes the given directory and anything under it. Returns true on success.
|
||||
bool DeleteDirRecursively(const std::string& directory, unsigned int recursion = 256);
|
||||
// Deletes the given path and anything under it. Returns true on success.
|
||||
bool DeleteDirRecursively(const std::filesystem::path& path);
|
||||
|
||||
// Returns the current directory
|
||||
[[nodiscard]] std::optional<std::string> GetCurrentDir();
|
||||
[[nodiscard]] std::optional<std::filesystem::path> GetCurrentDir();
|
||||
|
||||
// Create directory and copy contents (does not overwrite existing files)
|
||||
void CopyDir(const std::string& source_path, const std::string& dest_path);
|
||||
void CopyDir(const std::filesystem::path& src, const std::filesystem::path& dst);
|
||||
|
||||
// Set the current directory to given directory
|
||||
bool SetCurrentDir(const std::string& directory);
|
||||
// Set the current directory to given path
|
||||
bool SetCurrentDir(const std::filesystem::path& path);
|
||||
|
||||
// Returns a pointer to a string with a yuzu data dir in the user's home
|
||||
// directory. To be used in "multi-user" mode (that is, installed).
|
||||
|
|
|
|||
Loading…
Reference in a new issue