+typedef enum
+{
+ src_client, ///< came in over a net connection as a clc_stringcmd
+ ///< host_client will be valid during this state.
+ src_command ///< from the command buffer
+} cmd_source_t;
+
+typedef struct cmdalias_s
+{
+ struct cmdalias_s *next;
+ char name[MAX_ALIAS_NAME];
+ char *value;
+ qboolean initstate; // indicates this command existed at init
+ char *initialvalue; // backup copy of value at init
+} cmdalias_t;
+
+typedef struct cmd_function_s
+{
+ struct cmd_function_s *next;
+ const char *name;
+ const char *description;
+ xcommand_t function;
+ qboolean csqcfunc;
+ qboolean initstate; // indicates this command existed at init
+} cmd_function_t;
+
+typedef struct cmddeferred_s
+{
+ struct cmddeferred_s *next;
+ char *value;
+ double delay;
+} cmddeferred_t;
+
+/// container for user-defined QC functions and aliases, shared between different command interpreters
+typedef struct cmd_userdefined_s
+{
+ // csqc functions - this is a mess
+ cmd_function_t *csqc_functions;
+
+ // aliases
+ cmdalias_t *alias;
+}
+cmd_userdefined_t;
+
+/// command interpreter state - the tokenizing and execution of commands, as well as pointers to which cvars and aliases they can access
+typedef struct cmd_state_s
+{
+ qboolean wait;
+
+ mempool_t *mempool;
+
+ char tokenizebuffer[CMD_TOKENIZELENGTH];
+ int tokenizebufferpos;
+
+ cmddeferred_t *deferred_list;
+ double deferred_oldrealtime;
+
+ sizebuf_t text;
+ unsigned char text_buf[CMDBUFSIZE];
+ Thread_SpinLock text_lock;
+
+ int argc;
+ const char *argv[MAX_ARGS];
+ const char *null_string;
+ const char *args;
+ cmd_source_t source;
+
+ cmd_userdefined_t *userdefined; // possible csqc functions and aliases to execute
+
+ cmd_function_t *engine_functions;
+
+ cvar_state_t *cvars; // which cvar system is this cmd state able to access? (&cvars_all or &cvars_null)
+ int cvars_flagsmask; // which CVAR_* flags should be visible to this interpreter? (CVAR_CLIENT | CVAR_SERVER, or just CVAR_SERVER)
+}
+cmd_state_t;
+
+extern cmd_userdefined_t cmd_userdefined_all; // aliases and csqc functions
+extern cmd_userdefined_t cmd_userdefined_null; // intentionally empty
+
+// command interpreter for client commands injected by CSQC, MQC or client engine code
+// uses cmddefs_all
+extern cmd_state_t cmd_client;
+// command interpreter for server commands injected by MQC, SVQC, menu engine code or server engine code
+// uses cmddefs_all
+extern cmd_state_t cmd_server;
+// command interpreter for server commands received over network from clients
+// uses cmddefs_null
+extern cmd_state_t cmd_serverfromclient;
+
+extern qboolean host_stuffcmdsrun;
+
+void Cbuf_Lock(cmd_state_t *cmd);
+void Cbuf_Unlock(cmd_state_t *cmd);
+
+void Cmd_Init_Commands(qboolean dedicated_server);
+
+/*! as new commands are generated from the console or keybindings,
+ * the text is added to the end of the command buffer.
+ */
+void Cbuf_AddText (cmd_state_t *cmd, const char *text);
+
+/*! when a command wants to issue other commands immediately, the text is
+ * inserted at the beginning of the buffer, before any remaining unexecuted
+ * commands.
+ */
+void Cbuf_InsertText (cmd_state_t *cmd, const char *text);
+
+/*! Pulls off terminated lines of text from the command buffer and sends
+ * them through Cmd_ExecuteString. Stops when the buffer is empty.
+ * Normally called once per frame, but may be explicitly invoked.
+ * \note Do not call inside a command function!
+ */
+void Cbuf_Execute (cmd_state_t *cmd);
+/*! Performs deferred commands and runs Cbuf_Execute, called by Host_Main */
+void Cbuf_Frame (cmd_state_t *cmd);