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| author | Lexi Winter <lexi@le-fay.org> | 2025-06-29 19:19:23 +0100 |
|---|---|---|
| committer | Lexi Winter <lexi@le-fay.org> | 2025-06-29 19:19:23 +0100 |
| commit | a8b0ea58e60bb0326b7f7c8f3c736d89ce9ef1df (patch) | |
| tree | 6dafcf2674780649dcdc2649855722357837a68e /nihil.posix/posix.getenv.cc | |
| parent | 4fa6821e0645ff61a9380cd090abff472205c630 (diff) | |
| download | nihil-a8b0ea58e60bb0326b7f7c8f3c736d89ce9ef1df.tar.gz nihil-a8b0ea58e60bb0326b7f7c8f3c736d89ce9ef1df.tar.bz2 | |
wip macOS port
Diffstat (limited to 'nihil.posix/posix.getenv.cc')
| -rw-r--r-- | nihil.posix/posix.getenv.cc | 45 |
1 files changed, 0 insertions, 45 deletions
diff --git a/nihil.posix/posix.getenv.cc b/nihil.posix/posix.getenv.cc deleted file mode 100644 index 36df950..0000000 --- a/nihil.posix/posix.getenv.cc +++ /dev/null @@ -1,45 +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> - -module nihil.posix; - -import nihil.error; - -namespace nihil { - -auto getenv(std::string_view varname) -> std::expected<std::string, error> -{ - // Start with a buffer of this size, and double it every iteration. - constexpr auto bufinc = std::size_t{1024}; - - auto cvarname = std::string(varname); - 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))); - } -} - -} // namespace nihil |
