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authorLexi Winter <lexi@le-fay.org>2025-06-30 07:51:23 +0100
committerLexi Winter <lexi@le-fay.org>2025-06-30 07:51:23 +0100
commit034cd404a129103a8dd7747e6bd00ffd5550da93 (patch)
treed27946517d4d9333abd26ac50bbd4a436093e2ce /nihil.posix/getenv.cc
parent3e7902f7d790a486d3d9cb978df193f07f3a6ad9 (diff)
downloadnihil-034cd404a129103a8dd7747e6bd00ffd5550da93.tar.gz
nihil-034cd404a129103a8dd7747e6bd00ffd5550da93.tar.bz2
refactoring
Diffstat (limited to 'nihil.posix/getenv.cc')
-rw-r--r--nihil.posix/getenv.cc60
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