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// This file is part of libigl, a simple c++ geometry processing library.
//
// Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
//
// This Source Code Form is subject to the terms of the Mozilla Public License
// v. 2.0. If a copy of the MPL was not distributed with this file, You can
// obtain one at http://mozilla.org/MPL/2.0/.
#include "is_writable.h"
#ifdef _WIN32
#include <sys/stat.h>
#ifndef S_IWUSR
# define S_IWUSR S_IWRITE
#endif
IGL_INLINE bool is_writable(const char* filename)
{
// Check if file already exists
struct stat status;
if(stat(filename,&status)!=0)
{
return false;
}
return S_IWUSR & status.st_mode;
}
#else
#include <sys/stat.h>
#include <unistd.h>
IGL_INLINE bool igl::is_writable(const char* filename)
{
// Check if file already exists
struct stat status;
if(stat(filename,&status)!=0)
{
return false;
}
// Get current users uid and gid
uid_t this_uid = getuid();
gid_t this_gid = getgid();
// Dealing with owner
if( this_uid == status.st_uid )
{
return S_IWUSR & status.st_mode;
}
// Dealing with group member
if( this_gid == status.st_gid )
{
return S_IWGRP & status.st_mode;
}
// Dealing with other
return S_IWOTH & status.st_mode;
}
#endif
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