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| author | Lexi Winter <lexi@le-fay.org> | 2025-06-30 07:51:23 +0100 |
|---|---|---|
| committer | Lexi Winter <lexi@le-fay.org> | 2025-06-30 07:51:23 +0100 |
| commit | 034cd404a129103a8dd7747e6bd00ffd5550da93 (patch) | |
| tree | d27946517d4d9333abd26ac50bbd4a436093e2ce /nihil.posix/getenv.cc | |
| parent | 3e7902f7d790a486d3d9cb978df193f07f3a6ad9 (diff) | |
| download | nihil-034cd404a129103a8dd7747e6bd00ffd5550da93.tar.gz nihil-034cd404a129103a8dd7747e6bd00ffd5550da93.tar.bz2 | |
refactoring
Diffstat (limited to 'nihil.posix/getenv.cc')
| -rw-r--r-- | nihil.posix/getenv.cc | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/nihil.posix/getenv.cc b/nihil.posix/getenv.cc deleted file mode 100644 index c596902..0000000 --- a/nihil.posix/getenv.cc +++ /dev/null @@ -1,60 +0,0 @@ -/* - * This source code is released into the public domain. - */ - -module; - -#include <cstdint> -#include <expected> -#include <string> -#include <system_error> -#include <vector> - -#include <unistd.h> - -#include "nihil.hh" - -module nihil.posix; - -import nihil.error; - -namespace nihil { - -auto getenv(std::string_view varname) -> std::expected<std::string, error> -{ - auto cvarname = std::string(varname); - -#ifdef NIHIL_HAVE_GETENV_R - // Start with a buffer of this size, and double it every iteration. - constexpr auto bufinc = std::size_t{1024}; - - auto buf = std::vector<char>(bufinc); - for (;;) { - auto const ret = ::getenv_r(cvarname.c_str(), - buf.data(), buf.size()); - - if (ret == 0) - return {std::string(buf.data())}; - - if (ret == -1 && errno == ERANGE) { - buf.resize(buf.size() * 2); - continue; - } - - return std::unexpected(error(std::errc(errno))); - } -#else // NIHIL_HAVE_GETENV_R - errno = 0; - auto *v = ::getenv(cvarname.c_str()); - - if (v != nullptr) - return {std::string(v)}; - - if (errno != 0) - return std::unexpected(error(std::errc(errno))); - - return std::unexpected(error(std::errc::no_such_file_or_directory)); -#endif // NIHIL_HAVE_GETENV_R -} - -} // namespace nihil |
