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/*
* Copyright 2003-2017 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPD_FS_FILE_INFO_HXX
#define MPD_FS_FILE_INFO_HXX
#include "check.h"
#include "Path.hxx"
#include "system/Error.hxx"
#include <stdint.h>
#ifdef WIN32
#include <fileapi.h>
#else
#include <sys/stat.h>
#endif
#ifdef WIN32
static inline constexpr uint64_t
ConstructUint64(DWORD lo, DWORD hi)
{
return uint64_t(lo) | (uint64_t(hi) << 32);
}
static constexpr time_t
FileTimeToTimeT(FILETIME ft)
{
return (ConstructUint64(ft.dwLowDateTime, ft.dwHighDateTime)
- 116444736000000000) / 10000000;
}
#endif
class FileInfo {
friend bool GetFileInfo(Path path, FileInfo &info,
bool follow_symlinks);
friend class FileReader;
#ifdef WIN32
WIN32_FILE_ATTRIBUTE_DATA data;
#else
struct stat st;
#endif
public:
FileInfo() = default;
FileInfo(Path path, bool follow_symlinks=true) {
if (!GetFileInfo(path, *this, follow_symlinks)) {
#ifdef WIN32
throw FormatLastError("Failed to access %s",
path.ToUTF8().c_str());
#else
throw FormatErrno("Failed to access %s",
path.ToUTF8().c_str());
#endif
}
}
bool IsRegular() const {
#ifdef WIN32
return (data.dwFileAttributes &
(FILE_ATTRIBUTE_DIRECTORY|FILE_ATTRIBUTE_DEVICE)) == 0;
#else
return S_ISREG(st.st_mode);
#endif
}
bool IsDirectory() const {
#ifdef WIN32
return data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;
#else
return S_ISDIR(st.st_mode);
#endif
}
uint64_t GetSize() const {
#ifdef WIN32
return ConstructUint64(data.nFileSizeLow, data.nFileSizeHigh);
#else
return st.st_size;
#endif
}
time_t GetModificationTime() const {
#ifdef WIN32
return FileTimeToTimeT(data.ftLastWriteTime);
#else
return st.st_mtime;
#endif
}
#ifndef WIN32
uid_t GetUid() const {
return st.st_uid;
}
mode_t GetMode() const {
return st.st_mode;
}
dev_t GetDevice() const {
return st.st_dev;
}
ino_t GetInode() const {
return st.st_ino;
}
#endif
};
inline bool
GetFileInfo(Path path, FileInfo &info, bool follow_symlinks=true)
{
#ifdef WIN32
(void)follow_symlinks;
return GetFileAttributesEx(path.c_str(), GetFileExInfoStandard,
&info.data);
#else
int ret = follow_symlinks
? stat(path.c_str(), &info.st)
: lstat(path.c_str(), &info.st);
return ret == 0;
#endif
}
#endif