lean2/src/util/realpath.cpp

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/*
Copyright (c) 2013 Microsoft Corporation. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Author: Leonardo de Moura
*/
#if defined(LEAN_CYGWIN)
#if defined(__STRICT_ANSI__)
// hack for using realpath on cygwin
#undef __STRICT_ANSI__
#endif
#endif
#include <string>
#include <cstdlib>
#include "util/realpath.h"
#if defined(LEAN_WINDOWS) && !defined(LEAN_CYGWIN)
#include <windows.h>
#endif
namespace lean {
std::string lrealpath(char const * fname) {
#if defined(LEAN_WINDOWS) && !defined(LEAN_CYGWIN)
constexpr unsigned BufferSize = 8192;
char buffer[BufferSize];
DWORD retval = GetFullPathName(fname, BufferSize, buffer, nullptr);
if (retval == 0 || retval > BufferSize) {
return std::string(fname);
} else {
return std::string(buffer);
}
#else
char * tmp = realpath(fname, nullptr);
std::string r(tmp);
free(tmp);
return r;
#endif
}
}