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cc24766fa6
For example, instead of doing
#include "nix/store-config.hh"
#include "nix/derived-path.hh"
Now do
#include "nix/store/config.hh"
#include "nix/store/derived-path.hh"
This was originally planned in the issue, and also recent requested by
Eelco.
Most of the change is purely mechanical. There is just one small
additional issue. See how, in the example above, we took this
opportunity to also turn `<comp>-config.hh` into `<comp>/config.hh`.
Well, there was already a `nix/util/config.{cc,hh}`. Even though there
is not a public configuration header for libutil (which also would be
called `nix/util/config.{cc,hh}`) that's still confusing, To avoid any
such confusion, we renamed that to `nix/util/configuration.{cc,hh}`.
Finally, note that the libflake headers already did this, so we didn't
need to do anything to them. We wouldn't want to mistakenly get
`nix/flake/flake/flake.hh`!
Progress on #7876
49 lines
1.2 KiB
C++
49 lines
1.2 KiB
C++
#include "nix/util/environment-variables.hh"
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#ifdef _WIN32
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# include "processenv.h"
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namespace nix {
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std::optional<OsString> getEnvOs(const OsString & key)
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{
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// Determine the required buffer size for the environment variable value
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DWORD bufferSize = GetEnvironmentVariableW(key.c_str(), nullptr, 0);
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if (bufferSize == 0) {
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return std::nullopt;
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}
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/* Allocate a buffer to hold the environment variable value.
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WARNING: Do not even think about using uniform initialization here,
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we DONT want to call the initializer list ctor accidentally. */
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std::wstring value(bufferSize, L'\0');
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// Retrieve the environment variable value
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DWORD resultSize = GetEnvironmentVariableW(key.c_str(), &value[0], bufferSize);
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if (resultSize == 0) {
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return std::nullopt;
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}
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// Resize the string to remove the extra null characters
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value.resize(resultSize);
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return value;
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}
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int unsetenv(const char * name)
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{
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return -SetEnvironmentVariableA(name, nullptr);
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}
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int setEnv(const char * name, const char * value)
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{
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return -SetEnvironmentVariableA(name, value);
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}
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int setEnvOs(const OsString & name, const OsString & value)
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{
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return -SetEnvironmentVariableW(name.c_str(), value.c_str());
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}
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}
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#endif
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