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