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#include "vcpkg_Dependencies.h"
#include <vector>
#include "vcpkg_Graphs.h"
#include "vcpkg_paths.h"
#include "package_spec.h"
#include "StatusParagraphs.h"
#include <unordered_set>
#include "vcpkg_Maps.h"
#include "vcpkg_Files.h"
#include "vcpkg.h"
namespace vcpkg::Dependencies
{
std::vector<package_spec_with_install_plan> create_install_plan(const vcpkg_paths& paths, const std::vector<package_spec>& specs, const StatusParagraphs& status_db)
{
std::unordered_map<package_spec, install_plan_action> was_examined; // Examine = we have checked its immediate (non-recursive) dependencies
Graphs::Graph<package_spec> graph;
graph.add_vertices(specs);
std::vector<package_spec> examine_stack(specs);
while (!examine_stack.empty())
{
const package_spec spec = examine_stack.back();
examine_stack.pop_back();
if (was_examined.find(spec) != was_examined.end())
{
continue;
}
auto process_dependencies = [&](const std::vector<std::string>& dependencies_as_string)
{
for (const std::string& dep_as_string : dependencies_as_string)
{
const package_spec current_dep = package_spec::from_name_and_triplet(dep_as_string, spec.target_triplet()).get_or_throw();
graph.add_edge(spec, current_dep);
if (was_examined.find(current_dep) == was_examined.end())
{
examine_stack.push_back(std::move(current_dep));
}
}
};
auto it = status_db.find(spec);
if (it != status_db.end() && (*it)->want == want_t::install)
{
was_examined.emplace(spec, install_plan_action{install_plan_type::ALREADY_INSTALLED, nullptr, nullptr});
continue;
}
expected<BinaryParagraph> maybe_bpgh = try_load_cached_package(paths, spec);
if (BinaryParagraph* bpgh = maybe_bpgh.get())
{
process_dependencies(bpgh->depends);
was_examined.emplace(spec, install_plan_action{install_plan_type::INSTALL, std::make_unique<BinaryParagraph>(std::move(*bpgh)), nullptr});
continue;
}
expected<SourceParagraph> maybe_spgh = try_load_port(paths, spec.name());
SourceParagraph* spgh = maybe_spgh.get();
Checks::check_exit(spgh != nullptr, "Cannot find package %s", spec.name());
process_dependencies(filter_dependencies(spgh->depends, spec.target_triplet()));
was_examined.emplace(spec, install_plan_action{install_plan_type::BUILD_AND_INSTALL, nullptr, std::make_unique<SourceParagraph>(std::move(*spgh))});
}
std::vector<package_spec_with_install_plan> ret;
const std::vector<package_spec> pkgs = graph.find_topological_sort();
for (const package_spec& pkg : pkgs)
{
ret.push_back({ pkg, std::move(was_examined[pkg]) });
}
return ret;
}
}
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