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file_util: Migrate Exists() and IsDirectory() over to std::filesystem

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Greatly simplifies our file-handling code for these functions.
This commit is contained in:
Lioncash 2020-12-08 18:36:49 -05:00
parent 026a2e35c2
commit df7cf1df19
2 changed files with 13 additions and 57 deletions
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61
src/common/file_util.cpp
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@ -3,6 +3,7 @@
// Refer to the license.txt file included.
#include <array>
#include <filesystem>
#include <limits>
#include <memory>
#include <sstream>
@ -75,62 +76,16 @@
// The code still needs a ton of cleanup.
// REMEMBER: strdup considered harmful!
namespace Common::FS {
namespace fs = std::filesystem;
// 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 fs::path& path) {
std::error_code ec;
return fs::exists(path, ec);
}
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 IsDirectory(const fs::path& path) {
std::error_code ec;
return fs::is_directory(path, ec);
}
bool Delete(const std::string& filename) {