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// file : bpkg/host-os-release.hxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#ifndef BPKG_HOST_OS_RELEASE_HXX
#define BPKG_HOST_OS_RELEASE_HXX
#include <bpkg/types.hxx>
#include <bpkg/utility.hxx>
namespace bpkg
{
// Information extracted from /etc/os-release on Linux. See os-release(5)
// for background. For other platforms we derive the equivalent information
// from other sources. Some examples:
//
// {"debian", {}, "10", "",
// "Debian GNU/Linux", "buster", ""}
//
// {"fedora", {}, "35", "workstation",
// "Fedora Linux", "", "Workstation Edition"}
//
// {"ubuntu", {"debian"}, "20.04", "",
// "Ubuntu", "focal", ""}
//
// {"windows", {}, "10", "",
// "Windows", "", ""}
//
// Note that version_id may be empty, for example, on Debian testing:
//
// {"debian", {}, "", "",
// "Debian GNU/Linux", "", ""}
//
// Note also that we don't extract PRETTY_NAME because its content is
// unpredictable. For example, it may include variant, as in "Fedora Linux
// 35 (Workstation Edition)". Instead, construct it from the individual
// components as appropriate, normally "$name $version ($version_codename)".
//
struct os_release
{
string name_id; // ID
vector<string> like_ids; // ID_LIKE
string version_id; // VERSION_ID
string variant_id; // VARIANT_ID
string name; // NAME
string version_codename; // VERSION_CODENAME
string variant; // VARIANT
};
// Return the release information for the specified host or nullopt if
// the specific host is unknown/unsupported.
//
optional<os_release>
host_os_release (const target_triplet& host);
}
#endif // BPKG_HOST_OS_RELEASE_HXX
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