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61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
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/*
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* Copyright (C) Nemirtingas
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* This file is part of System.
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*
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* System is free software; you can redistribute it
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* and/or modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or (at your option) any later version.
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*
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* System is distributed in the hope that it will be
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with System; if not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#include "System_internals.h"
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#if defined(SYSTEM_OS_WINDOWS)
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#define WIN32_LEAN_AND_MEAN
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#define VC_EXTRALEAN
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#define NOMINMAX
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#include <Windows.h>
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namespace System {
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}
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#elif defined(SYSTEM_OS_LINUX)
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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namespace System {
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SYSTEM_HIDE_API(std::string, SYSTEM_CALL_DEFAULT) ExpandSymlink(std::string file_path)
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{
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struct stat file_stat;
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std::string link_target;
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ssize_t name_len = 128;
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while(lstat(file_path.c_str(), &file_stat) >= 0 && S_ISLNK(file_stat.st_mode) == 1)
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{
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do
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{
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name_len *= 2;
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link_target.resize(name_len);
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name_len = readlink(file_path.c_str(), &link_target[0], link_target.length());
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} while (name_len == link_target.length());
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link_target.resize(name_len);
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file_path = std::move(link_target);
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}
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return file_path;
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}
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}
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#endif
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