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/*
* (C) 2015,2017 Jack Lloyd
* (C) 2015 Simon Warta (Kullo GmbH)
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include <botan/exceptn.h>
#include <botan/internal/filesystem.h>
#include <algorithm>
#if defined(BOTAN_TARGET_OS_HAS_STL_FILESYSTEM_MSVC) && defined(BOTAN_BUILD_COMPILER_IS_MSVC)
#include <filesystem>
#elif defined(BOTAN_HAS_BOOST_FILESYSTEM)
#include <boost/filesystem.hpp>
#elif defined(BOTAN_TARGET_OS_HAS_POSIX1)
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <deque>
#include <memory>
#include <functional>
#elif defined(BOTAN_TARGET_OS_HAS_WIN32)
#define NOMINMAX 1
#define _WINSOCKAPI_ // stop windows.h including winsock.h
#include <windows.h>
#include <deque>
#include <memory>
#endif
namespace Botan {
namespace {
#if defined(BOTAN_TARGET_OS_HAS_STL_FILESYSTEM_MSVC) && defined(BOTAN_BUILD_COMPILER_IS_MSVC)
std::vector<std::string> impl_stl_filesystem(const std::string& dir)
{
#if (_MSVC_LANG >= 201703L)
using namespace std::filesystem;
#else
using namespace std::tr2::sys;
#endif
std::vector<std::string> out;
path p(dir);
if(is_directory(p))
{
for(recursive_directory_iterator itr(p), end; itr != end; ++itr)
{
if(is_regular_file(itr->path()))
{
out.push_back(itr->path().string());
}
}
}
return out;
}
#elif defined(BOTAN_HAS_BOOST_FILESYSTEM)
std::vector<std::string> impl_boost_filesystem(const std::string& dir_path)
{
namespace fs = boost::filesystem;
std::vector<std::string> out;
for(fs::recursive_directory_iterator dir(dir_path), end; dir != end; ++dir)
{
if(fs::is_regular_file(dir->path()))
{
out.push_back(dir->path().string());
}
}
return out;
}
#elif defined(BOTAN_TARGET_OS_HAS_POSIX1)
std::vector<std::string> impl_readdir(const std::string& dir_path)
{
std::vector<std::string> out;
std::deque<std::string> dir_list;
dir_list.push_back(dir_path);
while(!dir_list.empty())
{
const std::string cur_path = dir_list[0];
dir_list.pop_front();
std::unique_ptr<DIR, std::function<int (DIR*)>> dir(::opendir(cur_path.c_str()), ::closedir);
if(dir)
{
while(struct dirent* dirent = ::readdir(dir.get()))
{
const std::string filename = dirent->d_name;
if(filename == "." || filename == "..")
continue;
const std::string full_path = cur_path + "/" + filename;
struct stat stat_buf;
if(::stat(full_path.c_str(), &stat_buf) == -1)
continue;
if(S_ISDIR(stat_buf.st_mode))
dir_list.push_back(full_path);
else if(S_ISREG(stat_buf.st_mode))
out.push_back(full_path);
}
}
}
return out;
}
#elif defined(BOTAN_TARGET_OS_HAS_WIN32)
std::vector<std::string> impl_win32(const std::string& dir_path)
{
std::vector<std::string> out;
std::deque<std::string> dir_list;
dir_list.push_back(dir_path);
while(!dir_list.empty())
{
const std::string cur_path = dir_list[0];
dir_list.pop_front();
WIN32_FIND_DATA find_data;
HANDLE dir = ::FindFirstFile((cur_path + "/*").c_str(), &find_data);
if(dir != INVALID_HANDLE_VALUE)
{
do
{
const std::string filename = find_data.cFileName;
if(filename == "." || filename == "..")
continue;
const std::string full_path = cur_path + "/" + filename;
if(find_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
{
dir_list.push_back(full_path);
}
else
{
out.push_back(full_path);
}
}
while(::FindNextFile(dir, &find_data));
}
::FindClose(dir);
}
return out;
}
#endif
}
bool has_filesystem_impl()
{
#if defined(BOTAN_TARGET_OS_HAS_STL_FILESYSTEM_MSVC) && defined(BOTAN_BUILD_COMPILER_IS_MSVC)
return true;
#elif defined(BOTAN_HAS_BOOST_FILESYSTEM)
return true;
#elif defined(BOTAN_TARGET_OS_HAS_POSIX1)
return true;
#elif defined(BOTAN_TARGET_OS_HAS_WIN32)
return true;
#else
return false;
#endif
}
std::vector<std::string> get_files_recursive(const std::string& dir)
{
std::vector<std::string> files;
#if defined(BOTAN_TARGET_OS_HAS_STL_FILESYSTEM_MSVC) && defined(BOTAN_BUILD_COMPILER_IS_MSVC)
files = impl_stl_filesystem(dir);
#elif defined(BOTAN_HAS_BOOST_FILESYSTEM)
files = impl_boost_filesystem(dir);
#elif defined(BOTAN_TARGET_OS_HAS_POSIX1)
files = impl_readdir(dir);
#elif defined(BOTAN_TARGET_OS_HAS_WIN32)
files = impl_win32(dir);
#else
BOTAN_UNUSED(dir);
throw No_Filesystem_Access();
#endif
std::sort(files.begin(), files.end());
return files;
}
}
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