// mcpp.pm.compat.legacy - legacy dependency-key compatibility.

//

// COMPAT: This module exists only to keep pre-namespace dependency syntax

// working during migration. It is slated for removal in mcpp 1.0.0.

// TODO(mcpp 1.0.0): remove this module and the legacy dotted-key parser.

//

// Deprecated:

//

// [dependencies]

// "mcpplibs.cmdline" = "0.0.2"

//

// Canonical:

//

// [dependencies.mcpplibs]

// cmdline = "0.0.2"

export module mcpp.pm.compat.legacy;

import std;

import mcpp.pm.dep_spec;

export namespace mcpp::pm::compat {

struct LegacyDependencyKey {

std::string namespace_;

std::string shortName;

bool legacyDottedKey = false;

};

inline LegacyDependencyKey split_legacy_dependency_key(std::string_view key)

{

auto dot = key.find('.');

if (dot == std::string_view::npos) {

return LegacyDependencyKey {

.namespace_ = std::string(mcpp::pm::kDefaultNamespace),

.shortName = std::string(key),

.legacyDottedKey = false,

};

}

return LegacyDependencyKey {

.namespace_ = std::string(key.substr(0, dot)),

.shortName = std::string(key.substr(dot + 1)),

.legacyDottedKey = true,

};

}

// Normalize legacy nested names after the first-dot split:

// ns="mcpplibs", shortName="capi.lua" -> ns="mcpplibs.capi", shortName="lua".

//

// This preserves the fully qualified name while making dependency de-dup use

// the same structured key as canonical [dependencies.mcpplibs] capi.lua.

inline void normalize_nested_namespace(std::string& ns,

std::string& shortName,

bool legacyDottedKey)

{

if (!legacyDottedKey) return;

if (ns.empty()) return;

auto dot = shortName.rfind('.');

if (dot == std::string::npos || dot + 1 >= shortName.size()) return;

ns += ".";

ns += shortName.substr(0, dot);

shortName = shortName.substr(dot + 1);

}

} // namespace mcpp::pm::compat