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// file : bpkg/system-package-manager.hxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#ifndef BPKG_SYSTEM_PACKAGE_MANAGER_HXX
#define BPKG_SYSTEM_PACKAGE_MANAGER_HXX
#include <libbpkg/manifest.hxx> // version
#include <libbpkg/package-name.hxx>
#include <bpkg/types.hxx>
#include <bpkg/utility.hxx>
#include <bpkg/package.hxx>
#include <bpkg/host-os-release.hxx>
namespace bpkg
{
// The system package manager interface. Used by both pkg-build (to query
// and install system packages) and by pkg-bindist (to build them).
//
class system_package_manager
{
public:
struct package_status
{
bpkg::version version;
// The system package can be either "available already installed"
// or "available not yet installed".
//
// If the package is partially installed (for example, libfoo but not
// libfoo-dev is installed), then installed should be false (and perhaps
// only a single available version should be returned).
//
bool installed;
string system_name;
string system_version;
};
// @@ We actually need to fetch is some are not installed to get their
// versions. We can do it as part of the call, no?
public:
virtual
~system_package_manager ();
explicit
system_package_manager (os_release&& osr)
: os_release_ (osr) {}
protected:
// Given the available packages (as returned by find_available_all())
// return the list of system package names.
//
// The name_id, version_id, and like_id are the values from the os_release
// struct (refer there for background). If version_id is empty, then it's
// treated as "0".
//
// First consider <distribution>-name values corresponding to name_id.
// Assume <distribution> has the <name>[_<version>] form, where <version>
// is a semver-like version (e.g, 10, 10.15, or 10.15.1) and return all
// the values that are equal of less than the specified version_id
// (include the value with the absent <version>). In a sense, absent
// <version> can be treated as 0 semver-like versions.
//
// If no value is found and like_id is not empty, then repeat the above
// process for like_id instead of name_id and version_id equal 0.
//
// If still no value is found, then return empty list (in which case the
// caller may choose to fallback to the downstream package name or do
// something more elaborate, like translate version_id to the like_id's
// version and try that).
//
static strings
system_package_names (const available_packages&,
const string& name_id,
const string& version_id,
const string& like_id);
protected:
os_release os_release_;
};
// Create a package manager instance corresponding to the specified host
// target and optional manager name. If name is empty, return NULL if there
// is no support for this platform.
//
// @@ TODO: need to assign names. Ideas:
//
// dpkg-apt, rpm-dnf
// deb, rpm
// debian, fedora (i.e., follow /etc/os-release ID_LIKE lead)
//
unique_ptr<system_package_manager>
make_system_package_manager (const target_triplet&,
const string& name);
}
#endif // BPKG_SYSTEM_PACKAGE_MANAGER_HXX
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