+function init_logging()
+ -- Initialize logging
+ require "core.loggingmanager"
+end
+
+function check_dependencies()
+ -- Check runtime dependencies
+ if not require "util.dependencies".check_dependencies() then
+ os.exit(1);
+ end
+end
+
+function sandbox_require()
+ -- Replace require() with one that doesn't pollute _G, required
+ -- for neat sandboxing of modules
+ local _realG = _G;
+ local _real_require = require;
+ function require(...)
+ local curr_env = getfenv(2);
+ local curr_env_mt = getmetatable(getfenv(2));
+ local _realG_mt = getmetatable(_realG);
+ if curr_env_mt and curr_env_mt.__index and not curr_env_mt.__newindex and _realG_mt then
+ local old_newindex
+ old_newindex, _realG_mt.__newindex = _realG_mt.__newindex, curr_env;
+ local ret = _real_require(...);
+ _realG_mt.__newindex = old_newindex;
+ return ret;
+ end
+ return _real_require(...);
+ end
+end
+