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/*
* Copyright (C) 2003-2014 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_FILESYSTEM_HXX
#define MPD_FS_FILESYSTEM_HXX
#include "check.h"
#include "Traits.hxx"
#include "system/fd_util.h"
#include "Path.hxx"
#include <sys/stat.h>
#include <unistd.h>
#include <stdio.h>
class AllocatedPath;
namespace FOpenMode {
/**
* Open mode for reading text files.
*/
constexpr PathTraitsFS::const_pointer ReadText = "r";
/**
* Open mode for reading binary files.
*/
constexpr PathTraitsFS::const_pointer ReadBinary = "rb";
/**
* Open mode for writing text files.
*/
constexpr PathTraitsFS::const_pointer WriteText = "w";
/**
* Open mode for writing binary files.
*/
constexpr PathTraitsFS::const_pointer WriteBinary = "wb";
/**
* Open mode for appending text files.
*/
constexpr PathTraitsFS::const_pointer AppendText = "a";
/**
* Open mode for appending binary files.
*/
constexpr PathTraitsFS::const_pointer AppendBinary = "ab";
}
/**
* Wrapper for fopen() that uses #Path names.
*/
static inline FILE *
FOpen(Path file, PathTraitsFS::const_pointer mode)
{
return fopen(file.c_str(), mode);
}
/**
* Wrapper for open_cloexec() that uses #Path names.
*/
static inline int
OpenFile(Path file, int flags, int mode)
{
return open_cloexec(file.c_str(), flags, mode);
}
/**
* Wrapper for rename() that uses #Path names.
*/
static inline bool
RenameFile(Path oldpath, Path newpath)
{
return rename(oldpath.c_str(), newpath.c_str()) == 0;
}
/**
* Wrapper for stat() that uses #Path names.
*/
static inline bool
StatFile(Path file, struct stat &buf, bool follow_symlinks = true)
{
#ifdef WIN32
(void)follow_symlinks;
return stat(file.c_str(), &buf) == 0;
#else
int ret = follow_symlinks
? stat(file.c_str(), &buf)
: lstat(file.c_str(), &buf);
return ret == 0;
#endif
}
/**
* Wrapper for unlink() that uses #Path names.
*/
static inline bool
RemoveFile(Path file)
{
return unlink(file.c_str()) == 0;
}
/**
* Wrapper for readlink() that uses #Path names.
*/
AllocatedPath
ReadLink(Path path);
#ifndef WIN32
static inline bool
MakeFifo(Path path, mode_t mode)
{
return mkfifo(path.c_str(), mode) == 0;
}
/**
* Wrapper for access() that uses #Path names.
*/
static inline bool
CheckAccess(Path path, int mode)
{
return access(path.c_str(), mode) == 0;
}
#endif
/**
* Checks is specified path exists and accessible.
*/
static inline bool
CheckAccess(Path path)
{
#ifdef WIN32
struct stat buf;
return StatFile(path, buf);
#else
return CheckAccess(path, F_OK);
#endif
}
/**
* Checks if #Path exists and is a regular file.
*/
static inline bool
FileExists(Path path, bool follow_symlinks = true)
{
struct stat buf;
return StatFile(path, buf, follow_symlinks) && S_ISREG(buf.st_mode);
}
/**
* Checks if #Path exists and is a directory.
*/
static inline bool
DirectoryExists(Path path, bool follow_symlinks = true)
{
struct stat buf;
return StatFile(path, buf, follow_symlinks) && S_ISDIR(buf.st_mode);
}
/**
* Checks if #Path exists.
*/
static inline bool
PathExists(Path path, bool follow_symlinks = true)
{
struct stat buf;
return StatFile(path, buf, follow_symlinks);
}
#endif
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