110 lines
2.2 KiB
C++
110 lines
2.2 KiB
C++
#pragma once
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#include <cstdlib>
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#include <cstdio>
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#include <string>
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#define TF_OS_LINUX 0
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#define TF_OS_DRAGONFLY 0
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#define TF_OS_FREEBSD 0
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#define TF_OS_NETBSD 0
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#define TF_OS_OPENBSD 0
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#define TF_OS_DARWIN 0
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#define TF_OS_WINDOWS 0
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#define TF_OS_CNK 0
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#define TF_OS_HURD 0
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#define TF_OS_SOLARIS 0
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#define TF_OS_UNIX 0 /* disjunction of TF_OS_LINUX, TF_OS_DARWIN etc. */
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#ifdef _WIN32
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#undef TF_OS_WINDOWS
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#define TF_OS_WINDOWS 1
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#endif
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#if (defined __APPLE__ && defined __MACH__)
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#undef TF_OS_DARWIN
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#define TF_OS_DARWIN 1
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#endif
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// in some ppc64 linux installations, only the second condition is met
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#if (defined __linux)
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#undef TF_OS_LINUX
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#define TF_OS_LINUX 1
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#elif (defined __linux__)
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#undef TF_OS_LINUX
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#define TF_OS_LINUX 1
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#else
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#endif
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#if (defined __DragonFly__)
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#undef TF_OS_DRAGONFLY
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#define TF_OS_DRAGONFLY 1
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#endif
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#if (defined __FreeBSD__)
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#undef TF_OS_FREEBSD
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#define TF_OS_FREEBSD 1
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#endif
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#if (defined __NetBSD__)
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#undef TF_OS_NETBSD
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#define TF_OS_NETBSD 1
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#endif
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#if (defined __OpenBSD__)
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#undef TF_OS_OPENBSD
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#define TF_OS_OPENBSD 1
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#endif
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#if (defined __bgq__)
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#undef TF_OS_CNK
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#define TF_OS_CNK 1
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#endif
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#if (defined __GNU__)
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#undef TF_OS_HURD
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#define TF_OS_HURD 1
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#endif
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#if (defined __sun)
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#undef TF_OS_SOLARIS
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#define TF_OS_SOLARIS 1
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#endif
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#if (1 != \
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TF_OS_LINUX + TF_OS_DRAGONFLY + TF_OS_FREEBSD + TF_OS_NETBSD + \
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TF_OS_OPENBSD + TF_OS_DARWIN + TF_OS_WINDOWS + TF_OS_HURD + \
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TF_OS_SOLARIS)
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#error Unknown OS
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#endif
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#if TF_OS_LINUX || TF_OS_DRAGONFLY || TF_OS_FREEBSD || TF_OS_NETBSD || \
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TF_OS_OPENBSD || TF_OS_DARWIN || TF_OS_HURD || TF_OS_SOLARIS
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#undef TF_OS_UNIX
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#define TF_OS_UNIX 1
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#endif
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namespace tf {
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// Function: get_env
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inline std::string get_env(const std::string& str) {
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#ifdef _MSC_VER
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char *ptr = nullptr;
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size_t len = 0;
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if(_dupenv_s(&ptr, &len, str.c_str()) == 0 && ptr != nullptr) {
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std::string res(ptr, len);
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free(ptr);
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return res;
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}
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return "";
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#else
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auto ptr = std::getenv(str.c_str());
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return ptr ? ptr : "";
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#endif
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}
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} // end of namespace tf -----------------------------------------------------
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