bool FileSystemAbstraction::DirExists(const std::string& dir)
{
bool dirExists = false;
#ifdef _WIN32
struct _stat info;
std::string myDir = dir;
// for the root dir on a drive (for example C:\)
// we need the trailing slash
if ((myDir.length() == 3) && (myDir[1] == ':') && ((myDir[2] != '\\') || (myDir[2] != '/'))) {
// do nothing
} else if ((myDir.length() == 2) && (myDir[1] == ':')) {
myDir += "\\";
} else {
// for any other dir (for example C:\WINDOWS\),
// we need to get rid of it.
myDir = StripTrailingSlashes(myDir);
}
const int ret = _stat(myDir.c_str(), &info);
dirExists = ((ret == 0) && (info.st_mode & _S_IFDIR));
#else
struct stat info;
const int ret = stat(dir.c_str(), &info);
dirExists = ((ret == 0) && S_ISDIR(info.st_mode));
#endif
return dirExists;
}
bool FileSystemAbstraction::IsReadableFile(const std::string& file)
{
#ifdef WIN32
return (_access(StripTrailingSlashes(file).c_str(), 4) == 0);
#else
return (access(file.c_str(), R_OK | F_OK) == 0);
#endif
}
void FileSystemAbstraction::ChDir(const std::string& dir)
{
#ifndef _WIN32
const int err = chdir(dir.c_str());
#else
const int err = _chdir(StripTrailingSlashes(dir).c_str());
#endif
if (err) {
throw content_error("Could not chdir into " + dir);
}
}
void FileSystemHandler::Chdir(const std::string& dir)
{
#ifndef _WIN32
const int err = chdir(dir.c_str());
#else
const int err = _chdir(StripTrailingSlashes(dir).c_str());
#endif
if (err) {
throw content_error("Could not chdir into SPRING_DATADIR");
}
}
bool FileSystemAbstraction::IsReadableFile(const std::string& file)
{
// Exclude directories!
if (!FileExists(file)) {
return false;
}
#ifdef WIN32
return (_access(StripTrailingSlashes(file).c_str(), 4) == 0);
#else
return (access(file.c_str(), R_OK | F_OK) == 0);
#endif
}
bool FileSystemAbstraction::FileExists(const std::string& file)
{
bool fileExists = false;
#ifdef _WIN32
struct _stat info;
const int ret = _stat(StripTrailingSlashes(file).c_str(), &info);
fileExists = ((ret == 0 && (info.st_mode & _S_IFREG)));
#else
struct stat info;
const int ret = stat(file.c_str(), &info);
fileExists = ((ret == 0 && !S_ISDIR(info.st_mode)));
#endif
return fileExists;
}
/**
* @brief creates a rwxr-xr-x dir in the writedir
*
* Returns true if the postcondition of this function is that dir exists in
* the write directory.
*
* Note that this function does not check access to the dir, ie. if you've
* created it manually with 0000 permissions then this function may return
* true, subsequent operation on files inside the directory may still fail.
*
* As a rule of thumb, set identical permissions on identical items in the
* data directory, ie. all subdirectories the same perms, all files the same
* perms.
*/
bool FileSystemAbstraction::MkDir(const std::string& dir)
{
// First check if directory exists. We'll return success if it does.
if (DirExists(dir)) {
return true;
}
bool dirCreated = false;
// If it doesn't exist we try to mkdir it and return success if that succeeds.
#ifndef _WIN32
dirCreated = (::mkdir(dir.c_str(), S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) == 0);
#else
dirCreated = (::_mkdir(StripTrailingSlashes(dir).c_str()) == 0);
#endif
if (!dirCreated) {
LOG_L(L_WARNING, "Could not create directory %s: %s", dir.c_str(), strerror(errno));
}
return dirCreated;
}
bool FileSystemAbstraction::DirExists(const std::string& dir)
{
bool dirExists = false;
#ifdef _WIN32
struct _stat info;
std::string myDir = dir;
// only for the root dir on a drive (for example C:\)
// we need the trailing slash
if (!IsFSRoot(myDir)) {
myDir = StripTrailingSlashes(myDir);
} else if ((myDir.length() == 2) && (myDir[1] == ':')) {
myDir += "\\";
}
const int ret = _stat(myDir.c_str(), &info);
dirExists = ((ret == 0) && (info.st_mode & _S_IFDIR));
#else
struct stat info;
const int ret = stat(dir.c_str(), &info);
dirExists = ((ret == 0) && S_ISDIR(info.st_mode));
#endif
return dirExists;
}
