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#include <iostream>
#include <unordered_map>
#include "lua_state.hh"
#include "vars.hh"
static lua_State *L = nullptr;
static bool config_loaded = false;
std::unordered_map<std::string, std::string> cached_install_directories;
std::unordered_map<std::string, std::string> cached_repos;
std::unordered_map<std::string, int> cached_build_systems;
void init_lua_state() {
if (L != nullptr) return;
L = luaL_newstate();
luaL_openlibs(L);
if (luaL_loadfile(L, config_file.c_str()) || lua_pcall(L, 0, 0, 0)) {
std::cout << print_error << "cannot run configuration script: " << lua_tostring(L, -1) << "\n";
return;
}
if (luaL_loadfile(L, repo_file.c_str()) || lua_pcall(L, 0, 0, 0)) {
std::cout << print_error << "cannot run repository script: " << lua_tostring(L, -1) << "\n";
return;
}
config_loaded = true;
}
void free_lua_state() {
if (L != nullptr) {
lua_close(L);
L = nullptr;
}
config_loaded = false;
}
lua_State* get_lua_state() {
return L;
}
void cache_install_directories() {
if (!config_loaded || !lua_istable(L, -1)) {
lua_getglobal(L, "install_directories");
}
if (!lua_istable(L, -1)) {
std::cout << print_error << "lua variable 'install_directories' is not a table.\n";
return;
}
lua_pushnil(L);
while (lua_next(L, -2) != 0) {
const char *key = lua_tostring(L, -2);
const char *value = lua_tostring(L, -1);
cached_install_directories[key] = value;
lua_pop(L, 1);
}
lua_pop(L, 1);
}
void cache_repos() {
if (!config_loaded) {
lua_getglobal(L, "repos");
} else if (!lua_istable(L, -1)) {
lua_getglobal(L, "repos");
}
if (!lua_istable(L, -1)) {
std::cout << print_error << "lua variable 'repos' is not a table.\n";
return;
}
lua_pushnil(L);
while (lua_next(L, -2) != 0) {
const char *key = lua_tostring(L, -2);
const char *value = lua_tostring(L, -1);
cached_repos[key] = value;
lua_pop(L, 1);
}
lua_pop(L, 1);
}
void cache_build_systems() {
if (!config_loaded) {
lua_getglobal(L, "build_systems");
} else if (!lua_istable(L, -1)) {
lua_getglobal(L, "build_systems");
}
if (!lua_istable(L, -1)) {
std::cout << print_error << "lua variable 'build_systems' is not a table.\n";
return;
}
lua_pushnil(L);
while (lua_next(L, -2) != 0) {
const char *key = lua_tostring(L, -2);
if (lua_isfunction(L, -1) == 0) {
std::cout << print_error << "build value is not a function\n";
lua_pop(L, 1);
continue;
}
cached_build_systems[key] = lua_gettop(L);
lua_pop(L, 1);
}
lua_pop(L, 1);
}
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