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//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of NVIDIA CORPORATION nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Copyright (c) 2018 NVIDIA Corporation. All rights reserved.
#ifndef DIR_ENTRY_H
#define DIR_ENTRY_H
#include "foundation/PxPreprocessor.h"
#if defined PX_LINUX || defined PX_ANDROID
# include <dirent.h>
# include <sys/types.h>
# include <sys/stat.h>
# include <string>
# include <sstream>
#else
# error Unsupported platform
#endif
namespace physx
{
class DirEntry
{
public:
DirEntry()
{
mDir = NULL;
mEntry = NULL;
mIdx = 0;
mCount = 0;
}
~DirEntry()
{
if (!isDone())
{
while (next());
}
// The Find.cpp loop behaves badly and doesn't cleanup the DIR pointer
if (mDir)
{
closedir(mDir);
mDir = NULL;
}
}
// Get successive element of directory.
// Returns true on success, error otherwise.
bool next()
{
if (mIdx < mCount)
{
mEntry = readdir(mDir);
++mIdx;
}
else
{
bool ret = (0 == closedir(mDir));
mDir = NULL;
mEntry = NULL;
return ret;
}
return true;
}
// No more entries in directory?
bool isDone() const
{
return mIdx >= mCount;
}
// Is this entry a directory?
bool isDirectory() const
{
if (mEntry)
{
if(DT_UNKNOWN == mEntry->d_type)
{
// on some fs d_type is DT_UNKNOWN, so we need to use stat instead
std::ostringstream path;
path << mDirPath << "/" << mEntry->d_name;
struct stat s;
if(stat(path.str().c_str(), &s) == 0)
{
return S_ISDIR(s.st_mode);
}
else
{
return false;
}
}
else
{
return DT_DIR == mEntry->d_type;
}
}
else
{
return false;
}
}
// Get name of this entry.
const char* getName() const
{
if (mEntry)
{
return mEntry->d_name;
}
else
{
return NULL;
}
}
// Get first entry in directory.
static bool GetFirstEntry(const char* path, DirEntry& dentry)
{
dentry.mDir = opendir(path);
dentry.mDirPath.assign(path, strlen(path));
if (!dentry.mDir)
{
return false;
}
dentry.mIdx = 0;
// count files
dentry.mCount = 0;
if (dentry.mDir != NULL)
{
while (readdir(dentry.mDir))
{
dentry.mCount++;
}
}
closedir(dentry.mDir);
dentry.mDir = opendir(path);
dentry.mEntry = readdir(dentry.mDir);
return true;
}
private:
DIR* mDir;
std::string mDirPath;
struct dirent* mEntry;
long mIdx, mCount;
};
}
#endif
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