transmission/libtransmission/file.cc

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// This file Copyright © 2013-2023 Mnemosyne LLC.
// It may be used under GPLv2 (SPDX: GPL-2.0-only), GPLv3 (SPDX: GPL-3.0-only),
// or any future license endorsed by Mnemosyne LLC.
// License text can be found in the licenses/ folder.
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#include <algorithm>
#include <string>
#include <string_view>
#include <vector>
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#include "libtransmission/transmission.h"
#include "libtransmission/error.h"
#include "libtransmission/file.h"
#include "libtransmission/tr-assert.h"
#include "libtransmission/tr-strbuf.h"
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using namespace std::literals;
#ifdef _WIN32
static auto constexpr NativeEol = "\r\n"sv;
#else
static auto constexpr NativeEol = "\n"sv;
#endif
bool tr_sys_file_write_line(tr_sys_file_t handle, std::string_view buffer, tr_error** error)
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{
TR_ASSERT(handle != TR_BAD_SYS_FILE);
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bool ret = tr_sys_file_write(handle, std::data(buffer), std::size(buffer), nullptr, error);
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if (ret)
{
ret = tr_sys_file_write(handle, std::data(NativeEol), std::size(NativeEol), nullptr, error);
}
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return ret;
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}
std::vector<std::string> tr_sys_dir_get_files(
std::string_view folder,
std::function<bool(std::string_view)> const& test,
tr_error** error)
{
if (auto const info = tr_sys_path_get_info(folder); !info || !info->isFolder())
{
return {};
}
auto const odir = tr_sys_dir_open(folder, error);
if (odir == TR_BAD_SYS_DIR)
{
return {};
}
auto filenames = std::vector<std::string>{};
for (;;)
{
char const* const name = tr_sys_dir_read_name(odir, error);
if (name == nullptr)
{
tr_sys_dir_close(odir, error);
return filenames;
}
if (test(name))
{
filenames.emplace_back(name);
}
}
}